ХИРУРГИЧЕСКОЕ УСТРОЙСТВО ДЛЯ ВЗЯТИЯ КЛЕТОК ТКАНИ ИЗ БИОЛОГИЧЕСКОЙ СТРУКТУРЫ

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СПОСОБ ХИРУРГИЧЕСКОГО МАЛОИНВАЗИВНОГО ЛЕЧЕНИЯ НЕФРОЛИТИАЗА У ВЗРОСЛЫХ

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УПРОЩЕННОЕ УСТРОЙСТВО ДЛЯ ОЧИСТКИ И ЗАПОЛНЕНИЯ КАМЕРЫ, СОДЕРЖАЩЕЕ ПОРШЕНЬ

Изобретение относится к способу и устройству для осуществления заполнения, очистки, ликвидации закупоривания в закрытой или квазизакрытой камере и может быть использовано, в частности, при строительных работах, в установках химического или пищевого производства, в медицине и др. Устройство содержит камеру с поршнем, имеющим возможность перемещаться при помощи двигателя, которая связана с закрытой камерой при помощи канала, при этом камера имеет участки специфической геометрической формы, позволяющие обеспечить контакт с наружным воздухом в том случае, когда поршень занимает определенное положение внутри камеры для того, чтобы реализовать резкое скачкообразное повышение давления, а устройство содержит выходной клапан, остающийся закрытым в том случае, когда поршень увеличивает объем камеры, чтобы вызвать понижение давления внутри этой и закрытой камер. Способ состоит в том, что он включает повторение следующих этапов: с помощью двигателя толкают поршень в направлении уменьшения объема камеры ...

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Изобретение относится к медицинской технике, а именно к катетерам, используемым для удаления нежелательной ткани из тела, а также для удаления материала из кровеносного сосуда для открытия кровеносного сосуда и улучшения кровотока по нему. Атерэктомический катетер содержит корпус с отверстием; поворотный вал, соединенный с корпусом; нож, соединенный с поворотным валом для поворота вокруг оси поворота; камеру для сбора ткани, соединенную с корпусом и расположенную дистально относительно ножа; и выступ, проходящий по направлению наружу от чашеобразной поверхности ножа. Нож имеет чашеобразную поверхность и режущую кромку. Чашеобразная поверхность выполнена с возможностью перенаправления ткани, срезанной режущей кромкой, в дистальном направлении при перемещении чашеобразной поверхности в дистальном направлении. Выступ проходит по направлению наружу от чашеобразной поверхности ножа и имеет первую стенку, проходящую от чашеобразной поверхности, дистальную стенку и изогнутую режущую кромку, образованную ...

ЛЕГКО ОЧИЩАЕМЫЕ АТЕРЭКТОМИЧЕСКИЕ КАТЕТЕРЫ И СПОСОБЫ ИХ ИСПОЛЬЗОВАНИЯ

Изобретение относится к медицинской технике, а именно к катетерам, используемым для удаления материала из области в полости тела. Атерэктомический катетер содержит корпус с отверстием, поворотный вал, собирающую камеру для сбора ткани и нож. Поворотный вал соединен с корпусом и выполнен с возможностью поворота вокруг продольной оси вала. Собирающая камера для сбора ткани соединена с корпусом и расположена дистально относительно ножа. Нож соединен с поворотным валом и имеет чашеобразную поверхность и режущую кромку. Чашеобразная поверхность выполнена с возможностью перенаправления ткани, срезаемой режущей кромкой, в дистальном направлении при перемещении чашеобразной поверхности в указанном дистальном направлении. Собирающая камера для сбора ткани имеет первое закрытое положение, обеспечивающее возможность удержания в ней срезаемой ткани, и второе открытое положение, обеспечивающее возможность удаления из нее срезаемой ткани. Собирающая камера содержит наконечник, расположенный в дистальной ...

УСТРОЙСТВО ДЛЯ СЪЕМА МАТЕРИАЛА С УЛУЧШЕННОЙ ЭФФЕКТИВНОСТЬЮ ЗАХВАТА И СПОСОБЫ ПРИМЕНЕНИЯ

Изобретение относится к медицине и может быть использовано для сбора в накопительной камере срезаемого материала. Атерэктомический катетер содержит направляющие средства для отделяемых частиц. Частицы отделяют режущим элементом в полости кровеносного сосуда. После отделения частицы попадают в накопительную камеру. 16 з.п. ф-лы, 10 ил.

СПОСОБЫ И УСТРОЙСТВО ДЛЯ ВОССТАНОВЛЕНИЯ ПОТОКА

Группа изобретений относится к медицине, восстановлению кровотока в закупоренных кровеносных сосудах с применением устройства, содержащего саморасширяемый дистальный элемент (СДЭ) с трубчатой структурой (ТС), имеющей ячейки. ТС может принимать конфигурацию с увеличенным объемом в месте расположения тромба в сосуде и переходить в конфигурацию с уменьшенным объемом для подачи через микрокатетер. Конфигурация с уменьшенным объемом имеет размер поперечного сечения меньше, чем конфигурация с увеличенным объемом. ТС имеет возможность расширения из конфигурации с уменьшенным объемом в конфигурацию с увеличенным объемом при проксимальном извлечении микрокатетера. Дистальный конец ТС взаимодействует и оказывает радиальное силовое воздействие по меньшей мере на часть тромба для его соединения с ТС. Устройство дополнительно содержит проксимальный удлиненный элемент (ПУЭ), прикрепленный к СДЭ таким образом, что ПУЭ в целом проходит параллельно центральной продольной оси ТС со смещением относительно ...

ГИБКИЙ И ЖЕСТКИЙ БАЛЛОНЧИК РЕЗЕКТОРА С КАТЕТЕРОМ

Настоящее изобретение относится к гибким и жестким баллончикам резектора и может быть использовано при лечении внутрипросветных эндобронхиальных опухолевых поражений и эндоваскулярных окклюзий, которые встречаются в кровеносных сосудах и других пустотелых трубчатых органах, таких как трахея, дыхательное горло, пищевод, мочевыводящие пути, желчные протоки. Баллончик резектора содержит резекционный кончик, резекционную часть, упрочненную поверхность, секцию катетера и концевую секцию инжектора. Резекционная часть разбухает или надувается в трубчатых органах и обеспечивает резекцию опухоли при смещении или перемещении. Упрочненная поверхность предусмотрена на наружной поверхности указанной резекционной части для соскабливания и разрушения указанных тканей опухоли. Секция катетера обеспечивает доступ к внутрипросветному участку. Концевая секция 6 инжектора может надувать указанную резекционную часть путем впрыскивания воздуха или жидкости. В результате можно легко устранить любую окклюзию в ...

Способ лечения мочекаменной болезни путем перекутанной нефролитотрипсии

Изобретение относится к медицине, хирургии. При выполнении перекутанной нефролитотрипсии вводят в полостную систему почки кожух. В почку перед разрушением камня заводят и размещают в перешейки чашек почки либо в лоханочно-мочеточниковый сегмент конусы из полипропиленовой сетки. Конусы оснащены тракционными нитями. После дробления сетку извлекают подтягиванием за нити. Способ обеспечивает предотвращение миграции фрагментов во время дробления путем чрескожной нефролитотрипсии, повышение эффективности лечения мочекаменной болезни за счет более полного удаления камня, без оставления остаточных фрагментов конкрементов, предотвращает возникновение рецидивов. 1 пр., 2 ил.

Наконечник эндоскопического зонда для контактной лазерной литотрипсии

Полезная модель относится к оборудованию для защиты тканей организма человека от давления гидроудара при дроблении конкрементов методом контактной лазерной литотрипсии в мочевых, желчных протоках и в протоке поджелудочной железы.Техническим результатом является снижение степени травмирования стенки протока давлением гидроудара и фрагментами конкремента при лазерной литотрипсии.Сущность полезной модели: по сравнению с известным наконечником эндоскопического зонда для контактной лазерной литотрипсии, содержащим цилиндрический трубчатый элемент, который одним концом жестко закреплен на дистальном конце зонда, новым является то, что трубчатый элемент выполнен комбинированным из двух патрубков, один из которых прочный, а другой эластичный, установленных так, что эластичный патрубок надет с натягом на прочный и выступает от его свободного торца на длину, равную 0,2-0,3d, где d - диаметр прочного патрубка наконечника. 4 ил.

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Полезная модель относится к медицине, в частности к абдоминальной хирургии, и может быть использована для детальной ревизии и извлечения фиксированных к стенке холедоха крупных конкрементов, конкрементов неправильной формы с целью отделения конкремента от стенки холедоха или создания тоннеля между конкрементом и стенкой холедоха для заведения за камень любого инструмента для его извлечения. Диссектор изготовлен из нержавеющей стали шириной 6 мм, длиной 260 мм, толщиной 1 мм. На дистальном конце изделия имеется желобоватый наконечник длиной 10 мм, диаметром 8 мм, выполненный на 1/2 окружности, края дистальной части которого и торцевая кромка закруглены. Средняя часть с возможностью изгиба под необходимым углом. Рукоятка загнута в виде незамкнутого полуовала. Диссектор для отделения и удаления фиксированных крупных конкрементов неправильной формы из холедоха простой и удобный, инструмент может использоваться как самостоятельно, так и одновременно с холедохоскопом. Благодаря гибкой конструкции ...

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Изобретение относится к медицине и может быть использовано в проктологии и гинекологии для извлечения инородных тел. Инструмент содержит два кольца, каждое из которых с лицевой стороны имеет два отверстия и два зубца. Зубцы и отверстия выполнены с возможностью фиксации друг в друга в виде единой конструкции, имеют конусообразную форму и расположены в шахматном порядке в противоположных закругленных углах прямоугольных площадок. Кольца выполнены для надевания на верхние фаланги пальцев. Техническим результатом изобретения является снижение травматичности вмешательства за счет более удобного и безопасного извлечения инородного тела. 3 ил.

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Способ эндоваскулярной тромбоэктомии в сочетании с открытой нефректомией у пациентов с опухолевой инвазией в почечную и нижнюю полую вену

Изобретение относится к медицине, а именно к эндоваскулярной хирургии и урологии. Через флеботомический разрез вводят ангиографический проводник в правую подключичную вену и продвигают его в нижнюю полую вену (НПВ), устанавливая его выше верхушки опухолевого тромба. Устанавливают закрытый тромбоэкстрактор с дополнительной внутренней петлей с крючками в грудном отделе нижней полой вены выше краниального конца флотирующего опухолевого тромба и раскрывают капюшон тромбоэкстрактора. Одевают тромбоэкстрактор на тромб, затягивают дополнительную внутреннюю петлю с крючками и закрывают капюшон, срезая флотирующий тромб. В таком положении тромбэкстрактор удаляют через флеботомическое отверстие. Выполняют открытую нефрэктомию, краевое отжатие опухолевых венозных масс в просвет почечной вены с ее дальнейшим удалением. Способ позволяет уменьшить время оперативного лечения, уменьшить кровопотерю в ходе оперативного лечения, уменьшить количество интра- и постоперационных осложнений, повышает выживаемость ...

Способ эндоваскулярного лечения тромботической окклюзии аутовенозных аортокоронарных шунтов у пациентов с острым инфарктом миокарда с подъемом сегмента ST

Изобретение относится к разделу медицины, а именно к рентгенэндоваскулярным диагностике и лечению, кардиологии. У пациентов с острым инфарктом миокарда с подъемом сегмента ST. Способ включает установку проводникового катетера в устье шунта. Проводят коронарный проводник 0,014 дюйма до дистальных отделов шунтированной коронарной артерии и оценивают исходный кровоток. При отсутствии контрастирования шунта или при обнаружении массивного тромбоза шунта проводят интубацию проводникового катетера на 20 мм в просвет шунта и выполняют троекратную аспирацию из проводникового катетера шприцем объемом 20 мл. Затем циклы продвижения проводникового катетера на 20 мм и троекратную аспирацию продолжают до достижения проводниковым катетером дистального отдела шунта. После этого проводниковый катетер извлекают, выполняют контрольную аспирацию из катетера, контрастируют шунт и стентируют область остаточного стеноза. Способ позволяет снизить риск развития геморрагических осложнений, упростить способ эндоваскулярного ...

СПОСОБ САНАЦИОННОЙ ВИДЕОАССИСТИРОВАННОЙ РЕТРОПЕРИТОНЕОСКОПИИ В ЛЕЧЕНИИ НЕКРОТИЧЕСКОГО ПАНКРЕАТИТА, УСТРОЙСТВО ДЛЯ ОТДЕЛЕНИЯ И ФРАГМЕНТАЦИИ СЕКВЕСТРОВ

Группа изобретений относится к медицине, а именно к способу санационной видеоассистированной ретроперитонеоскопии в лечении некротического панкреатита и устройству для отделения и фрагментации секвестров. Способ включает пункцию под ультразвуковым контролем иглой с расположенным в ней мандреном, введение металлического проводника после попадания иглы в полость и удаления мандрена с последующим введением расширителя и катетера. Проводник служит направляющей устройства для отделения секвестров от стенок гнойной полости и их фрагментации. После того, как дистальный конец устройства достигает гнойной полости при его введении, проводник извлекают и через полую ось со шнековым элементом проводят трубку оптическую прямую. После визуализации секвестров подводят устройство до уровня отверстий в гильзе и посредством регулировочной ручки с внутренней резьбой и торсионной пружины осуществляют смещение рычажных прижимных планок-щипцов кнаружи. Осуществляют вращение и возвратно-поступательные движения ...

ИНСТРУМЕНТ ДЛЯ ОТДЕЛЕНИЯ МАГНИТНЫХ МИШЕНЕЙ И ЕГО ПРИМЕНЕНИЕ

Группа изобретений относится к инструменту для отделения магнитных мишеней и его применению. Наночастицы содержат ядро наночастицы, изготовленное из магнитных веществ, и оболочку наночастицы, образованную посредством присоединения мономерного модификатора поверхности к ядру наночастицы с использованием инициатора и/или сшивающего агента. Полученные наночастицы могут обволакивать камни в мочеточнике, а затем мелкие камни, оставшиеся в организме, могут быть быстро удалены без повреждения организма под действием инструмента для отделения магнитных мишеней. Камни можно вытягивать и двигать без повреждения стенки мочеточника, и наночастицы размещаются удобным образом без минимального сдвига. 2 н. и 13 з.п. ф-лы, 29 ил., 20 пр.

СПОСОБ САНАЦИОННОЙ ВИДЕОАБСЦЕССОСКОПИИ В КОМПЛЕКСНОМ ЛЕЧЕНИИ ВНУТРИБРЮШНЫХ АБСЦЕССОВ И УСТРОЙСТВО ДЛЯ САНАЦИОННОЙ ВИДЕОАБСЦЕССОСКОПИИ

Изобретение относится к медицине, а именно к хирургии, и может быть использовано в комплексе миниинвазивных способов лечения внутрибрюшных абсцессов (ВБА) различной локализации. Устройство для санационной видеоабсцессоскопии включает гильзу диаметром 15 мм, полую ось, расположенную в гильзе и выполненную с возможностью введения в нее трубки оптической прямой, дисковую рукоятку, дисковый упор, рычажную планку, жестко соединенную с дисковым упором, рычажно-шарнирное соединение, бранши зажима и пружину. Дисковый упор выполнен с возможностью сближения с дисковой рукояткой для расправления рычажно-шарнирного соединения, за счет натяжения рычажной планки, приводящего к выдвижению вперед с одновременным смыканием браншей зажима, а также с возможностью смещения вместе с гильзой в дистальном направлении вдоль рычажной планки, за счет пружины, для складывания рычажно-шарнирного соединения, приводящего к раскрытию браншей зажима. Способ санационной видеоабсцессоскопии в комплексном лечении внутрибрюшных ...

СПОСОБ ГИБРИДНОЙ АРТЕРИАЛИЗАЦИИ ГЛУБОКИХ ВЕН СТОПЫ ПРИ ХРОНИЧЕСКОЙ ИШЕМИИ, УГРОЖАЮЩЕЙ ПОТЕРЕЙ КОНЕЧНОСТИ, И ВАЛЬВУЛОТОМ ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ

Группа изобретений относится к медицине, в частности к сердечно-сосудистой и рентгенэндоваскулярной. Осуществляют доступ к подколенной артерии или поверхностной бедренной артерии и формируют проксимальный анастомоз подколенной или поверхностной бедренной артерии с большой подкожной или малой подкожной веной. При этом выполняют пункционный бедренный антеградный доступ, вальвулотом надевают на проводник и проводят его до зоны шунта. Эндоваскулярным способом осуществляют разрушение венозных клапанов посредством зубцов на конце вальвулотома, который продвигают в антеградном направлении до голеностопного сустава подкожной вены. Выполняют разрушение клапанов медиальной краевой вены и коммуниканта с глубокой венозной плантарной дугой стопы баллонным катетером. Осуществляют эмболизацию боковых ветвей подкожной вены и медиальной краевой вены спиралями. Способ осуществляется посредством валвулотома состоящего из трубки с двумя и более зубцами на конце ее для разрушения венозных клапанов и просветом ...

СПОСОБ ЛЕЧЕНИЯ БОЛЕЗНИ ПЕЙРОНИ

СИММЕТРИЧНЫЕ И ПРЕДПОЧТИТЕЛЬНО ОТКЛОНЯЕМЫЕ СЛУЧАЙНЫЕ РЕШЕТКИ ДЛЯ УЛЬТРАЗВУКОВОЙ ТЕРАПИИ

... 1. Фазированная ультразвуковая решетка для устройства генерации ультразвука, причем решетка содержит совокупность ультразвуковых элементов, в которой ультразвуковые элементы решетки располагаются симметрично относительно точки или разделительной линии в решетке в отношении размеров, форм элементов и положений элементов, причем, по меньшей мере, один элемент из совокупности элементов имеет размер и/или форму, который(ая) отличается от остальных из совокупности элементов и/или, по меньшей мере, одно расстояние между элементами отличается от остальных расстояний. ! 2. Фазированная ультразвуковая решетка по п.1, в которой размеры и/или формы ультразвуковых элементов выбраны случайно. ! 3. Фазированная ультразвуковая решетка по п.1, в которой положения ультразвуковых элементов выбраны случайно. ! 4. Фазированная ультразвуковая решетка по п.1, в которой совокупность дистанций между положениями центров масс соседних ультразвуковых элементов является апериодической. ! 5. Устройство для генерации ...

СПОСОБЫ И УСТРОЙСТВА ДЛЯ СРЕЗАНИЯ И ОЧИЩЕНИЯ ТКАНИ

... 1. Атерэктомический катетер, содержащий:корпус с отверстием;поворотный вал, соединенный с корпусом;камеру для сбора ткани, соединенную с корпусом и расположенную дистально относительно ножа; инож, соединенный с поворотным валом для его поворота вокруг продольной оси и имеющий чашеобразную поверхность и режущую кромку,причем чашеобразная поверхность выполнена с возможностью перенаправления ткани, срезаемой режущей кромкой, в дистальном направлении при перемещении чашеобразной поверхности в указанном дистальном направлении, а нож имеет по меньшей мере одну абразивную поверхность.2. Катетер по п.1, в котором режущая кромка представляет собой радиальную внешнюю кромку ножа.3. Катетер по п.1, в котором катетер содержит выступ, проходящий по направлению наружу от чашеобразной поверхности ножа.4. Катетер по п.3, в котором:режущая кромка представляет собой радиальную внешнюю кромку ножа, ивыступ проксимально углублен от режущей кромки вдоль продольной оси.5. Катетер по п.1, в котором нож выполнен ...

СИСТЕМА ВСТАВНОГО МЕДИЦИНСКОГО УСТРОЙСТВА С СЕКЦИЕЙ ЛЕЧЕНИЯ БЛЯШЕК И СПОСОБЫ ПРИМЕНЕНИЯ

ЛЕЧЕНИЕ ОПУХОЛИ С ИСПОЛЬЗОВАНИЕМ УЛЬТРАЗВУКОВОЙ КАВИТАЦИИ

... 1. Устройство для осуществления управления ростом ткани тела, содержащее:кавитационный генератор (120), содержащий датчик сфокусированного ультразвукового излучения высокой интенсивности для подачи импульса в фокальную точку в упомянутом месте роста во время процедуры подачи импульсов, причем упомянутый импульс предназначен для индуцирования, с помощью механических, нетепловых эффектов кавитации (214) в текучей среде внутри упомянутого места роста, временного изменения физиологической структуры в упомянутом месте роста, при этом временное изменение физиологической структуры содержит сосудистый спазм, который, по меньшей мере, задерживает, останавливает и осуществляет обратное развитие упомянутого роста; исредство (150) введения вещества для введения вещества в реальном времени в упомянутое место роста, причем упомянутое вещество предназначено для подачи пузырьков для использования при облегчении упомянутой кавитации посредством упомянутого импульса, поданного датчиком сфокусированного ультразвукового ...

Способ эвакуации конкрементов при микроперкутанной нефролитотрипсии

Изобретение относится к медицине, а именно к области урологии. В полость чашечно-лоханочной системы почки устанавливают мочеточниковый кожух с наружным диаметром 2,6 миллиметра и внутренним диаметром 1,9 миллиметра, под рентгенологическим и видеоконтролем формируют нефростомический ход в чашечно-лоханочную систему. При этом к мочеточниковому кожуху присоединяют предварительно сжатый эластичный хирургический контейнер «гармошку» с металлической пружиной внутри него. Причем по рабочему каналу микронефроскопа осуществляют лазерную дезинтеграцию камня на фоне непрерывной ирригации с эвакуацией резидуальных фрагментов по мочеточниковому кожуху. При этом под действием силы тяжести сжатый контейнер «гармошка» и металлическая пружина расправляются, поддерживая постоянный уровень разрежения и увлекая за собой по градиенту резидуальные фрагменты в область низкого давления. Способ эффективен и безопасен при лечении нефролитиаза, позволяет снизить количество резидуальных конкрементов во время проведения ...

Способ лечения острой окклюзии экстра- и интракраниального отделов внутренней сонной артерии в острейшем периоде ишемического инсульта

Изобретение относится к медицине, а именно к сердечно-сосудистой хирургии. Выполняют открытый хирургический доступ к общей сонной артерии (ОСА) в дистальной трети и, дополнительно, к наружной и внутренней сонной артерии (НСА) в проксимальной трети. Затем проводят мобилизацию ОСА и НСА, фиксацию их при помощи силиконовой ленты. Далее ОСА пережимают в дистальной трети, а НСА в проксимальной трети при помощи зажимов. Выполняют продольную артериотомию ОСА с переходом на внутреннюю сонную артерию (ВСА) на протяжении 2-3 см, затем эвакуируют тромботические массы из бифуркации сонной артерии и ВСА на доступном участке, с последующей каротидной эндартерэктомией. После чего осуществляют снятие зажима не более чем на 1 секунду с ОСА для определения восстановления кровотока. Затем выполняют ее повторное пережатие, после чего устанавливают интродьюсер 6Fr во ВСА и выполняют прямую ангиографию прецеребральных и церебральных артерий для выявления места локализации тромботических масс, затем через интродьюсер ...

GERÄT ZUR ULTRASCHALLBEHANDLUNG VON KNOCHEN

Medizinisches Aspirationssystem

Die Erfindung betrifft ein medizinisches Aspirationssystem mit einem Katheter (1) mit wenigstens zwei Lumen, wobei ein erstes Lumen ein Aspirationslumen (2) bildet, das mit einer Aspirationseinheit zum Absaugen von Stoffen aus einem Blutgefäß verbunden ist, und ein zweites Lumen ein Infusionslumen (3) bildet, durch das ein Stoff dem Blutgefäß zuführbar ist, wobei eine Austrittsöffnung (4) des Infusionslumens (3) in einem Bereich zwischen einer Eintrittsöffnung (5) des Aspirationslumens (2) und einer Position proximal zur Eintrittsöffnung des Aspirationslumens (2) angeordnet ist. Sie zeichnet sich dadurch aus, dass das Infusionslumen (3) mit einer Kühleinheit verbunden ist, die eine gekühlte Flüssigkeit zur Verabreichung durch das Infusionslumen (3) bereitstellt.

GERAET FUER DIE "ANGIOPLASTY".

Werkzeug für laparaskopische Chirurgie

OCCLUSIONSINSTRUMENT UND VERFAHREN ZU DESSEN HERSTELLUNG

A rotational atherectomy device with fluid inflatable support elements

A rotational atherectomy device, for abrading a stenotic lesion from a vessel of a patient, comprises a flexible drive shaft 1, a distal fluid inflatable support element 3 located at a distal end 4 of the drive shaft, and an abrasive element 5 mounted to the drive shaft 1 proximal to and spaced away from the distal fluid inflatable support element 3. Both the abrasive element 5 and the distal fluid inflatable support element 3 are rotatable together with the drive shaft 1 which comprises a torque transmitting coil 2 defining a long lumen 6. The support element 3 is formed from a fluid impermeable membrane 9 that crosses the longitudinal axis X-X of the drive shaft 1 at its distal end 4, thereby preventing pressurized fluid flowing along the lumen 6 and entering the vessel. The fluid then has to pass through the support element 3, causing it to inflate, and exit the device through outflow openings 66.

Rotational atherectomy device with offset abrasive and counterweight

A rotational device for removing an occlusion from inside a tubular structure, the device comprising a drive shaft 10 for insertion over a guidewire 5 into a tubular structure and an abrasive element 20 on the drive shaft 10 having its centre of mass offset from a longitudinal axis of the drive shaft. A solid counterweight 30 is disposed on the drive shaft 10 spaced from the abrasive element 20 and having its centre of mass offset from the longitudinal axis of the drive shaft 10 so that the abrasive element 20 moves in an orbital path around said axis to abrade an occlusion from inside the tubular structure when the drive shaft 10 rotates around the guidewire 5.

Aspiration catheter

An aspiration catheter 10 has an aspiration tube 14 with a coaxial wire guide support 20. The distal end of the wire guide support 20 has a tip 18 for poking into thrombi. In use, the aspiration catheter 10 is navigated over a wire guide 40 until it is positioned adjacent to a thrombus before the tip 18 is moved back and forth in the distal-proximal direction to dislodge the thrombus and an aspiration force is applied via the aspiration tube 14 to suck the dislodged thrombus from the body.

Rotational atherectomy device with fluid inflatable support elements and distal protection capability

Devices for clearing blockages in artificial and natural lumens

DEVICE FOR THE PRODUCTION OF PROXIMAL STASIS

EMBOLISIERUNGSSCHUTZSYSTEM FOR VASCULAR TREATMENTS

BLUTGERINNSELFANGSPIRALE

HIGH-FREQUENCY TREATMENT TOOL FOR THE MUKOSEMEMBRAN DEMOLITION

FLUORESZENTES CHLOROTOXINKONJUGAT AND PROCEDURES FOR INTRAOPERATIVEN THE SICHTBARMACHUNG OF CANCER

DEVICE FOR REMOVING FROM OKKLUSIONEN IN BIOLOGICAL PASSAGES

DEVICES FOR THE PERCUTANEOUS TREATMENT OF AORTENKLAPPENSTENOSEN

FLUIDS AND DEVICES FOR THE REDUCTION OF THE MINERAL CONTENT OF CALCIFIED VASCULAR LESIONS

EMBOLEKTOMIE CATHETER

SYSTEMS AND PROCEDURES FOR PUTTING FORWARD AND ROTATION OF MEDICINE PRODUCTS

SYSTEMS TO THE AUFLOSEN OF GERINSELN

GEF�SSFILTERSYSTEM

BALLOON FOLD DEVICE

MORE DILATATIONSKATHETER.

VASKULARER CATHETER WITH AN EXHIBITING DISTAL ONE END A LOW PROFILE

Catheter for removal of thrombi and application of medicaments

Thromben werden mittels sogenannter Aspirationskatheter entfernt. Dabei besteht die Gefahr, dass sich gelöstes thrombotisches Material von der Stelle des Eingriffs entfernt und an anderer Stelle anlagert und dort eventuell ein anderes Gefäß verstopft. Ausgehend davon besteht die Aufgabe der Erfindung darin, einen Katheter bereitzustellen, der einen schnellen und komplikationslosen Abtransport von thrombotischem Material gewährleistet. Ein erfindungsgemäßes System (1) zur Entfernung von thrombotischem Material (D) aus einem Blutgefäß (B) umfasst einen Aspirationskatheter (2), der ein Führungselement (3) zum Einführen des Aspirationskatheters (2) in das Blutgefäß (B), und ein Infusionselement (4) zum Zuführen eines Medikaments (M) in das Blutgefäß (B), wobei das Infusionselement (4) Öffnungen (41) und/oder wenigstens einen (semi)permeablen Wandbereich aufweist, durch den bzw. die das Medikament (M) durchtreten kann. Nach der Applikation eines Thromben lösendes Medikaments werden die gelösten ...

DEVICE FOR REMOVING FROM MATERIALS FROM THE BODY

DIAGNOSIS AND TREATMENT OF SUPRAVALVULAR AORTIC STENOSIS

SURGICAL INSTRUMENT TO ARTERIENINNENHAUTENTFERNUNG

FABRIC-PENETRATING CATHETERS WITH TRANSDUCER TO THE PICTURE GIVING AND ASSOCIATED ONE APPLICATION METHODS

DEVICE FOR TREATING BLUTGEFÄSSOKKLUSIONEN

GUIDANCE WIRE DEVICE TO THE COMPLETE OKKLUSION

ENTRANCE DEVICE AND DEVICE TO KATHETERISIERUNG THE BLADDER BY A NATURAL OR ARTIFICIAL CHANNEL

SHUNT FOR MAINTAINING DISTAL FLOW OF BLOOD DURING AN ARTERIOTOMIE OPERATION

ASPIRATION CATHETER ARRANGEMENT

PROCEDURE AND DEVICES FOR THE PRODUCTION OF KOLLATERALEN CHANNELS IN THE LUNGS

SURGICAL INSTRUMENTS TO ARTERIENINNENHAUTENTFERNUNG

EXCHANGEABLE HANDSTÜCK FOR A MEDICAL DEVICE

A mini-invasive device for the endourologic treatment

A mini-invasive device (2) for the endourologic treatment, characterized in that it comprises a tubular conduit (4), longitudinally flexible, intended to be inserted through and cross the operating channel (8) of an endoscope (10), and in that said tubular conduit (4): - internally defines a substantially non-deformable lumen, - has a portion (14), that in operation is the proximal one, comprising a connector (30) for the connection to suction means, - has a portion (12), that in operation is the distal one, intended to project from the distal tip of said endoscope (10), - internally delimits a suction conduit (5) within which at least one tool (33, 41) used in the endourologic treatment can be removably inserted.

Thrombectomy device and methods of use

The device disclosed herein is used to the remove a thrombus from the vasculature. It includes an aspiration catheter and a thrombus retrieval device that extends through the lumen of the aspiration catheter. An expandable braided assembly extends over a distal region of the retrieval device, and an activation wire extends through the lumen of the retrieval device to attach to and control the expansion of the braided assembly. Applying tension to the activation wire causes the braided assembly to expand to a diameter of the practitioner's choosing. For example, the practitioner may apply a first level of tension to the activation wire to deploy the braided assembly to a first diameter and then later change the diameter by applying a different level of tension. The expanded braided assembly contacts the thrombus and is pulled proximally toward the aspiration catheter to assist in thrombus removal.

Blockage clearing devices, systems, and methods

A system for clearing a blockage from an esophagus of a patient can include a sheath assembly that includes a sheath configured for insertion into the esophagus and an imaging device coupled to a distal end of the sheath. The sheath can have a sufficient length to be advanced sufficiently far through the esophagus to permit the imaging device to detect the blockage. The sheath assembly can further include a positioning element that is capable of transitioning from an undeployed state to a deployed state to contact the esophagus to space the lumen from the esophagus. The system can further include a catheter assembly that includes a catheter sized to pass through the lumen of the sheath and a cutting tip for cutting a morsel from the blockage as suction is applied to the blockage via the lumen of the catheter.

Apparatus and method for reducing laser beam attentuation in a liquid medium

A method of optimizing the irradiation of a target with laser radiation includes selecting and mounting on a laser radiation delivery device either a waveguide or optical fiber type to be used; also, selecting at least the following parameters: selecting the total energy of the at least one train of pulses to be delivered to the target, and selecting the distance from the distal delivery end to the target; then, initiating irradiation of the target for the at least one train of pulses by generating a first laser pulse with sufficient energy (E ...

REMOTE FIBER OPTIC MEDICAL PROCEDURE AND DEVICE

Methods and device for percutaneous remote endarterectomy

Surgical instrument guide device

A method and apparatus for increasing blood flow through an obstructed blood vessel

A method for increasing blood flow through an obstructed blood vessel includes providing an expandable member (100) made of a mesh having a plurality of interstices. The expandable member is substantially closed at the distal end and is inserted into the vessel and positioned within the vessel with the member body located radially adjacent at least a portion of an obstruction. The expandable member is expanded into contact with the obstruction. An outward radial force is exerted on the obstruction to dislodge a fragment. The fragment is passed through at least one interstice of the member body in the radial direction, the fragment being selectively retained. An apparatus for increasing blood flow through an obstructed blood vessel is also provided.

MEDICAL VIEWING SYSTEM AND METHOD FOR DETECTING BOUNDARY STRUCTURES

Apparatus

Abstract This invention relates to apparatus and methods for removing emboli during vascular interventions. More particularly, the apparatus and methods of the present invention provide a catheter having an occlusion balloon of uniform thickness that facilitates retrograde flow and removes emboli from a treatment vessel via a funnel shaped taper of the occlusion balloon. 22813391 (GHMatters) 19/05/10 ...

Therapeutic agent delivery system, device and method for localized application of therapeutic substances to a biological conduit

The invention provides a system, device and method for localized application of therapeutic substances within a biological conduit. In various embodiments, a dissolvable bag or bolus of at least one therapeutic agent is introduced and pressed and/or sealed against the wall of conduit. In other embodiments, dissolvable barbs formed from at least one therapeutic agent are ejected from a catheter by fluid pressure, embedding in the wall of conduit.

Material removal device

A catheter having a tubular body and a rotatable shaft disposed within a lumen of the tubular body. A cutting element is coupled to the rotatable shaft, the cutting element having a cutting edge, the cutting element and rotatable shaft being longitudinally moveable within the tubular body between a stored position in which the cutting element is positioned distal of a side opening and a cutting position in which the cutting element is contained within the lumen of the tubular body and longitudinally aligned with the side opening. The cutting element is configured to extend through the side opening and to cut material from the wall of a vessel at a treatment site as the catheter is pulled proximally through the treatment site. The catheter may optionally have a rotating distal tip with an abrasive surface. The catheter includes a collection chamber positioned proximally of the cutting window.

Systems for removal of atherosclerotic plaque or thrombus at a treatment site

A system for removing plaque or thrombus from the vasculature and/or deployed medical devices is described. An embodiment can include a plaque reduction brush comprising at least one support adapted to allow the brush to be endoluminally deliverable via a delivery device to a treatment site; and a plurality of bristles extending from the at least one support and being arranged in a predetermined pattern along the at least one support, each of the plurality of bristles having a length, wherein one or more of the plurality of bristles has a bending portion along the length that is more easily bent than another portion of the length thereof, said bending portion facilitating bending of the one or more of the plurality of bristles between a compressed delivery configuration and an expanded use configuration.

Rotational atherectomy device with fluid inflatable support elements and distal protection capability

Methods and devices for cutting and abrading tissue

The present invention provides an atherectomy catheter which has a cutting element that is able to cut both soft tissue and hard tissue, and methods of cutting material from a blood vessel lumen using a rotating cutting element. The cutting element has a sharp cutting edge that surrounds a cup-shaped surface and at least one surface of abrasive material. The cup-shaped surface directs the cut material into a tissue chamber. The cutting edge and the cup-shaped surface together are well suited to cut and remove relatively soft tissue from the blood vessel. The abrasive material surface in combination with the cutting element is well suited to abrade and remove hard material from the blood vessel.

Arterial device, system and method

An arterial device, system and method are provided for use with a patient undergoing a cardiac procedure. The system is configured for enabling one or more arterial devices to be accommodated in the aorta of the patient in use of the system, and a perfusion lumen arrangement provides therethrough a target perfusion flow into the aorta having a target perfusion flow rate that is significantly greater than a nominal perfusion flow rate, by an excess perfusion flow rate. A suction lumen arrangement provides therethrough a suction flow out of the aorta at a suction flow rate. The target perfusion flow rate and the suction flow rate may be concurrently and selectively controlled to cause embolic debris that may be present in the aorta to be diverted to the suction inlet, while providing the nominal flow rate to the body circulation of the patient.

Magnetomotive stator system and methods for wireless control of magnetic rotors

The present invention relates to a system for the physical manipulation of free magnetic rotors in a circulatory system using a remotely placed magnetic field-generating stator. In one aspect, the invention relates to the control of magnetic particles in a fluid medium using permanent magnet-based or electromagnetic field-generating stator sources. Such a system can be useful for increasing the diffusion of therapeutic agents in a fluid medium, such as a human circulatory system, which can result in substantial clearance of fluid obstructions, such as vascular occlusions, in a circulatory system resulting in increased blood flow. Examples of vascular occlusions targeted by the system include, but are not limited to, atherosclerotic plaques, including fibrous caps, fatty buildup, coronary occlusions, arterial stenosis, restenosis, vein thrombi, arterial thrombi, cerebral thrombi, embolisms, hemorrhages, other blood clots, and very small vessels.

Magnetically guided atherectomy

Systems and methods for delivering beneficial agents into targeted tissue of a living being

Apparatus and method for removing occlusive material within blood vessels

SUCTION CATHETER

Clot removal device with steerable element

A clot removal device and method for removing a clot from a blood vessel are provided, where the clot removal device includes a shaft and an elongate clot engagement element having one end connected to the shaft and a distal end remote from the end connected to the shaft, and where the shaft and elongate clot engagement element having a principal longitudinal axis. Further, the distal end can include an end formation forming a curved contact surface at the distal end, and the end formation can be displaced to one side of the principal longitudinal axis.

Rapid aspiration thrombectomy system and method

An intravascular access system for facilitation of intraluminal medical procedures within the neurovasculature through an access sheath. The system includes an aspiration or support catheter (1320) having a flexible, distal luminal portion (1322) having an inner diameter defining a lumen (1323) extending between a proximal opening at a proximal end of the luminal portion and a distal opening at a distal end of the luminal portion. The catheter has a rigid spine (1330) coupled to at least the proximal end of the luminal portion and extending proximally therefrom. The system includes a dilator (1340) having a flexible, distal dilator portion (1360) sized to be received within the lumen (1323) of the luminal portion (1322). Associated systems, devices, and methods of use are also described.

Single access flow-reversal catheter devices and methods

Embodiments herein include devices and methods directed toward creating reverse flow within a vessel and thereby providing protection against embolic debris. Embodiments comprise a catheter and a plurality of occluders that are expandable and adjustable within a lumen to create low-pressure areas that reroute blood flow and embolic debris therein.

Shockwave catheter system with energy control

A system that breaks calcium in a liquid includes a catheter including first and second electrodes arranged to receive there-across a high electrical voltage at an initial low current. The high electrical voltage causes an electrical arc to form across the electrodes creating a gas bubble within the liquid, a high current to flow through the electrodes, and a mechanical shock wave. A power source provides the electrodes with the high electrical voltage at the initial current and terminates the high electrical voltage in response to the high current flow through the electrodes.

Apparatus and methods for clot disruption and evacuation

APPARATUS AND METHODS FOR CLOT DISRUPTION AND The apparatus includes a catheter (50) having a combined infusion/aspiration lumen (70), a three lumen proximal portion (82) and a two lumen distal portion (84). An infusion/aspiration valve (132) located at the distal end of the catheter (50) facilitates performing infusion and aspiration through the same lumen (70), which in turn reduces the number of lumens, and enables the combined infusion/aspiration lumen (70) to be made larger without the need to increase the diameter of the catheter (50). Differing material properties in the proximal and distal portions (82, 84) of the catheter (50) enable the proximal portion (82) to be made stiffer for pushability, while the distal portion (84) is more flexible to navigate tortuous vasculature and enable a greater amplitude agitator (80) to be received within the catheter (50).

Methods and apparatus for flow restoration

Methods for restoring blood flow in occluded blood vessels using an apparatus having a self expandable distal segment that is pre-formed to assume a superimposed structure in an unconstrained condition but can be made to take on a volume-reduced form making it possible to introduce it with a microcatheter and a push wire arranged at the proximal end, with the distal segment in its superimposed structure assuming the form of a longitudinally open tube and having a mesh structure of interconnected strings or filaments or struts. In a preferred embodiment, the distal segment has a tapering structure at its proximal end where the strings or filaments or struts converge at a connection point.

Apparatus and methods for treating stroke and controlling cerebral flow characteristics

Devices and methods facilitating sleeve gastrectomy procedures

DEVICES AND METHODS FACILITATING SLEEVE GASTRECTOMY A gastrectomy device (10) includes an elongated member (12) defining a centerline that extends through proximal and distal ends thereof A shape modification member (16) coupled to the elongated member (12) is movable relative to the centerline of the elongated member (12). The shape modification member (16) is movable between a first state, adjacent to the elongated member (12), and a second state, spaced from the elongated member (12). The shape modification member (16) conforms to a portion of a patient's stomach ("S") in the second state. C%4z IMPm ...

Suction catheter system

Flexible catheter

A flexible, elongated catheter tube having distal and proximal ends and a laser cut section there between. The laser cut section makes up a majority of the catheter length and is cut in a continuous helical pattern forming interlocking teeth which can be sinusoidal, triangular, square or likes shapes, preferably sinusoidal. The interior of the catheter tube has a polymeric bi-layer of a nylon or like polymer at the interface of the tube interior and a Teflon or like polymer forms the interior lumen of the catheter. The exterior of the tube has a thin polymer coating of nylon or the like. A short portion of the distal end is uncut and is followed by a narrower terminal section which can be tapered for better blockage penetration. The interlocking teeth disengage and reengage in a fish scale manner without undergoing plastic deformation and without substantial polymer separation.

CATHETER

Locator method and apparatus

Systems and methods for delivering drugs to selected locations within the body

METHODS AND APPARATUS FOR RELIEVING ARTERIAL CONSTRICTIONS

Method and apparatus for increasing blood flow through an obstructed blood vessel

A method of increasing blood flow through an obstructed blood vessel includes providing an expandable member substantially made of a mesh having a plurality of interstices. The expandable member is inserted into the blood vessel, positioned within the blood vessel with the proximal member end upstream of the distal member end and the member body located radially adjacent at least a portion of an obstruction, and expanded to bring at least a portion of the member body into contact with the obstruction. An outward radial force is exerted on the obstruction to dislodge at least one fragment from the obstruction and to enhance blood flow through the blood vessel past the obstruction. The at least one fragment is passed through at least one interstice of the member body in the radial direction, and is selectively retained within the expandable member.

Methods and Devices for Conduit Occlusion

The present invention comprises systems, methods and devices for the delivery of compositions for occluding or of elements for opening conduits. The implantable occlusive material may be delivered pre-formed or in situ cured and, may be a resorbable or degradable material that supports tissue ingrowth or wound healing or a similar response that replaces the cured occlusive material leaving little or no original occlusive material in place. The delivery system is positioned to allow for placement of the occlusive material into the body conduit. Use of delivery systems, methods and devices for re-opening an occluded body conduit are also included.

Medical snare device

An apparatus having a longitudinal shaft. A guide feature is associated with the longitudinal shaft. The guide feature is disposed adjacent to a distal end of the longitudinal shaft. At least one ensnarement feature is associated with the longitudinal shaft. The at least one ensnarement feature is disposed at least partially proximally relative to the guide feature.

Method and apparatus for treatment of intracranial hemorrhages

An ultrasound catheter with a lumen for fluid delivery and fluid evacuation, and an ultrasound source is used for the treatment of intracerebral or intraventricular hemorrhages. After the catheter is inserted into a blood clot, a lytic drug can be delivered to the blood clot via the lumen while applying ultrasonic energy to the treatment site. As the blood clot is dissolved, the liquefied blood clot can be removed by evacuation through the lumen.

Device and method for removing material from a hollow anatomical structure

A medical device for removing a material from a hollow anatomical structure is provided. The device includes a radially expandable capture member. The device includes a treatment segment that is positioned distally of the capture member in use and having at least one exit port adapted for delivering a fluid agent to the material. The device includes an embolic capture device that is positioned distally of the treatment segment in use and including a radially expandable filter for capturing a part of the material which travels downstream of the treatment segment. Additionally, a method is provided herein for infusing, injecting, distributing, or releasing an intended fluid into a hollow anatomical structure.

Expandable tip assembly for thrombus management

Systems, methods, and devices for the treatment of acute ischemic stroke that provide immediate blood flow restoration to a vessel occluded by a clot and, after reestablishing blood flow, address the clot itself. Immediate blood flow restoration advantageously can facilitate natural lysis of the clot and also can reduce or obviate the concern for distal embolization due to fragmentation of the clot. Several embodiments of the invention provide for progressive, or modular, treatment based upon the nature of the clot. For example, the progressive treatment can include immediate restoration of blood flow, in-situ clot management, and/or clot removal depending on the particular circumstances of the treatment. The in-situ clot management can include, for example, lysis, maceration, and/or removal.

Change-Out Handle System and Medical Instrument

A change-out handle system is provided for releasably coupling two elongated, axially relatively displaceable functional parts to a medical instrument unit. The change-out handle system includes a first and a second handle part disposed axially relatively displaceably, a first coupler for releasably axially rigidly immovably coupling a first of the two functional parts to the first handle part and a second coupler for releasably, axially rigidly immovably coupling the second of the two functional parts to the second handle part. The second handle part has a pass-through opening for passing at least the first of the two functional parts. The change-out handle system can be used, for example, for medical solids trapping instruments.

Ultrasound transducer and cooling thereof

An ultrasonic transducer device for producing ultrasonic beams comprises a body vibratable at ultrasonic frequencies and an extensive surface for beam emanation, the device configured to produce an unfocused, or alternatively a focused, power beam for tissue ablation, the power beam being produced by vibration over the body of the transducer and emanating from the extent of the surface, whereby the extensive surface becomes subject to convective cooling when immersed in a fluid by a chimney effect set up by said unfocused beam.

Ultrasound catheter for providing a therapeutic effect to a vessel of a body

The invention relates to a catheter system. The system comprises a catheter body having a chamber containing a low acoustic impedance medium. The catheter body includes an elongated body with an external surface and an ultrasound transducer having an external side between a first end and a second end. The ultrasound transducer is positioned over the external surface of the elongated body such that the first end is adjacent to the chamber.

Apparatus utilizing a guide wire to maneuver heating element and probe for treating damaged spinal discs

The advantages of this invention are provided by a surgical tool for repairing a damaged spinal disc of a patient comprising: a catheter having a proximal end and a distal end; a guide wire contained within the catheter so that when the guide wire is pulled, the catheter will flex into a non linear shape allowing it to be steered once inserted in the patient; a heating element carried by the catheter, probe or heating member, and connected to an power source 45 (external or not) so that the heating element can be activated and provide heat to treat a disk; a probe that extends from the catheter so that the probe can be extended out of the catheter; and, a grasping member that can from the distal end of the catheter.

Catheter guidance of external energy for renal denervation

An in vivo apparatus includes a flexible shaft having a proximal end, a distal end, and a length sufficient to access a patient's renal artery relative to a percutaneous access location. An energy guide apparatus is provided at the distal end of the shaft and dimensioned for deployment within the renal artery. An ex vivo apparatus includes an arrangement configured to localize the energy guide apparatus within the renal artery, and an energy source configured to direct ablative energy to target tissue located a predetermined distance from the localized energy guide apparatus. The target tissue includes perivascular renal nerve tissue adjacent the renal artery.

Devices for creating passages and sensing blood vessels

Devices and methods are disclosed for creating passages in tissue and detecting blood vessels in and around the passages. The devices may be used to create channels for altering gaseous flow within a lung to improve the expiration cycle of an individual, particularly individuals having Chronic Obstructive Pulmonary Disease (COPD). In addition, the devices may be used to sample tissue during biopsy or other medical procedures where perforating a blood vessel could result in injury to a patient.

Balloon catheter system

A balloon catheter system enables only a target site to be efficiently ablated, ensuring a balloon to be able to be brought into close contact with the target site in conformity to a shape of the target site. The balloon includes a contact portion that contacts the target site and a noncontact portion that does not contact the target site. A membrane thickness of the contact portion is thinner than that of the noncontact portion The target site that is in contact with the thin contact portion is selectively ablated, while the thick noncontact portion is less likely to exhibit a temperature increase. Hence, only the target portion is efficiently ablated.

Systems and methods for navigating a surgical device

Systems and methods are disclosed for navigating a surgical device toward a target organ in the body of a patient. An example method includes providing a surgical needle and a guide wire, the surgical needle configured for insertion into a vein or a beating heart. The method also includes holding the guide wire within the surgical needle while the surgical needle is inserted into the vein or the beating heart. The method also includes generating output in two modes, the output based on at least one medical positioning system (MPS) sensor on the guide wire, the output corresponding to a position of the surgical needle and the guide wire for navigating the surgical needle and the guide wire toward a target in the vein or the heart. The methods can be carried out directly by a physician or via a computer processor-based surgical system.

Devices and Methods for Removing Clots

A device for capturing a clot is provided. The device can include an inflatable body, a network of veins incorporated thereinto, and a wall defining the inflatable body. The inflatable body can include a pathway substantially axial therethrough upon inflation. The network of veins, upon introduction of a fluid thereinto, can inflate the inflatable body to a predetermined shape. The wall can extend between adjacent veins to define the pathway through the inflatable body and to direct the clot therethrough.

Spring Action Medical Device

A spring action medical device includes a spring that may propel a hammer component in a distal direction when the spring is released from a loaded state. When propelled forward by the spring, the hammer component makes contact with a distal tip of the medical device. The distal tip may then transfer a force to an external object, such as an occlusion in a body lumen.

Device and method for clot capture

A clot removal device and method for removing a clot from a blood vessel may employ a tubular clot capture element. The clot capture element may be configured for deployment in a blood vessel for surrounding a clot. The clot capture element may have an opening therein configured to receive and guide a clot engaging element and may be configured to radially contract upon retraction, such that when the clot capture element surrounds a clot and is retracted in a longitudinal direction of the blood vessel, the clot capture element is configured to exert a radially inward compression force on the clot.

Snare with Retractable Engaging Members

A snare for retrieving foreign objects within the body of a patient including a hollow elongate tubular member comprising an inner surface and an outer surface and a lumen defined by the inner surface, a proximal end and a distal end, the hollow elongate tubular member forms a loop at the distal end, the loop having an open position and a closed position, the loop comprising at least one opening and a wire slidably disposed in the lumen of the elongate tubular member, the wire comprising at least one engaging member for engaging tissue, the at least one engaging member extends through the at least one opening in the hollow elongate tubular member when the wire is in a first position and the at least one engaging member retracts into the lumen of the elongate tubular member when the wire moved to a in a second position.

Devices and methods for accessing a cerebral vessel

The present invention is directed to methods and devices for accessing a cerebral vessel. The system includes a support catheter having a balloon, which can be advanced into small and tortuous vessels. By advancing the support catheter nearer to the obstruction then can be achieved with conventional guide catheters, the support catheter reduces the likelihood vessel compression and collapse when manipulating a working catheter. The balloon may be used to temporarily stop blood flow.

Tissue Removal Apparatus and Method of Manufacturing Same

An apparatus is disclosed for removing tissue from a patient's body. The apparatus comprises an elongate member defining a lumen and a tissue removal member disposed within the lumen. The tissue removal member comprises a flexible shaft formed from a plurality of strands, and a coil that is helically disposed around the shaft. The coil is substantially in contact with the shaft along a length of the shaft. The coil forms a plurality of outwardly extending projections and each pair of the plurality of outwardly extending projections defines a spacing therebetween. Upon rotation of the tissue removal member within the elongate member, material is conveyed through the lumen of the elongate member. A related method of manufacturing a tissue removal member is also disclosed.

Method of Accessing the Left Common Carotid Artery

Single filter and multi-filter endolumenal methods and systems for filtering fluids within the body. In some embodiments a blood filtering system captures and removes particulates dislodged or generated during a surgical procedure and circulating in a patient's vasculature. In some embodiments a filter system protects the cerebral vasculature during a cardiac valve repair or replacement procedure.

Surgical retrieval device radially deployable from a collapsed position to a snare or cauterization loop

A surgical instrument featuring a combination cauterizing and surgical capture component. The instrument is deployable from a distal end of a lumen to a first position partially exposing a cauterizing loop and having restrained radially deployable members wherein a plurality of cauterizations may be performed with said cauterizing loop in an unobstructed view of a camera or lens. The instrument is deployable to a second position fully translated from the lumen whereafter the plurality of radially positionable members may be released by activation of a release member allowing the biased members to deploy radially around an axis running through the loop.

Apparatus and methods for treating obstructions within body lumens

Apparatus and methods are provided for delivering fluid into a body lumen during a medical procedure. A distal end of an apparatus may be introduced into a body lumen, and a valve on the distal end may be opened to deliver fluid through a first lumen into the body lumen, e.g., contrast and/or other diagnostic or therapeutic agents. The valve may be closed, and a procedure may be performed within the body lumen, e.g., using a treatment element carried on the distal end. For example, the treatment element may include a balloon that may be inflated when fluid is delivered through the first lumen with the valve closed. Optionally, a prosthesis, energy source, drug platform, and the like may be carried by the balloon for treating the body lumen. In various embodiments, the valve may be located proximal or distal to the treatment element.

Pressure pulse/shock wave apparatus for generating waves having plane, nearly plane, convergent off target or divergent characteristics

An apparatus for generating pressure pulse/shock waves (PP/SWs) is disclosed which comprises a pressure pulse/shock wave (PP/SW) source, a housing enclosing said PP/SW source, and an exit window from which wave fronts of waves generated by said PP/SW source emanate. The wave fronts have plane, nearly plane, convergent off target or divergent characteristics. In one embodiment, an extracorporeal shock wave system provides a planar wave for the treatment of tissue. A parabolic reflector is provided in order to propagate the planar wave through a membrane and to the tissue of a human subject. A piezoelectric, electrohydraulic or electromagnetic source may be used to develop the wave.

Catheter system and method for boring through blocked vascular passages

A rotating cutting head catheter for passage through chronic total occlusions or other refractory atherosclerotic plaque from diseased arteries is disclosed. The catheter's rotating cutting head is designed to reside safely within an outer protective sheath when not in use. The outer protective sheath contains one or more helical grooves or slots, and the cutting head contains protruding blades or projections that fit into these helical grooves or slots. Application of torque to an inner catheter or wire attached to the cutting head applies spin to the cutting head, and the force of the sheath's helical grooves or slots against the cutting head's protruding blades or projections advances the cutting head outward from the protective sheath. Once extended, the cutting head may now rotate freely. The device may use a guidewire to direct the cutting head to the desired position.

Method and apparatus for treatment of erectile dysfunction with extracorporeal shockwaves

A method and device producing extracorporeal shockwaves for the treatment of erectile dysfunction.

Cutting balloon assembly and method of manufacturing thereof

A method for fabrication of a cutting balloon assembly is described. The method includes providing a predetermined number of filaments having predetermined properties, diameter and length and fabricating a scoring mesh on a weaving jig having a plurality of pins disposed circumferentially about the jig's surface. The fabrication of the scoring mesh includes placing the filaments between the pins and interlacing the filaments to form a scoring mesh by interweaving and intertwining at least a part of filament to form one or more permanent links with neighboring filaments. The fabrication of the scoring mesh also includes forming distal and proximal filament loops that protrude from the mesh distal and proximal ends, respectfully. The scoring mesh is mounted on an expandable balloon mounted on a distal end of a delivery catheter.

Integrated medical apparatus for non-traumatic grasping, manipulating and closure of tissue

The integrated medical apparatus includes an operator handle end and a multi-prong grasping member positioned within and movable relative to a grasper lumen that extends from the handle end, wherein the grasping prongs are moved between an open and closed position by relative axial movement between the prongs of the grasping member and the grasper lumen. The medical apparatus includes a contractible snare and a plurality of axially moveable snare pushing arms. At least two of the snare pushing arms include a snare holding and release mechanism, wherein the snare pushing arms are configured to advance the snare in an open, encircling position to a final deployed position where the snare can be released through the activation of the holding and release mechanism of the pushing arms, and finally tightened in a conventional fashion, such as pulling on an end of the snare at the handle end.

Aspiration catheters for thrombus removal

Systems for less invasive medical procedures comprise a filter device mounted on an integrated guiding structure and an aspiration catheter. These components can be used together or separately, and the system can be used with other medical devices that are designed for less invasive procedures, such as procedures in a patient's vasculature. The catheter can have a radiopaque band that is held in place under metal wire embedded within the polymer forming the tube of the catheter. In some embodiments, the aspiration catheter has a small diameter distal portion that can access into small diameter vessels in which the distal portion has a smaller average diameter than the remaining tube of the catheter.

Inverted balloon neck on catheter

A method for thermal bonding of an inverted balloon neck on a catheter, including placing an inverted balloon neck ( 84 ) on a shaft ( 86 ) of a catheter, and characterized by applying heat at an internal hollow ( 85 ) of the shaft ( 86 ) where the inverted balloon neck ( 84 ) is placed, while applying internal pressure to attach an external surface of the shaft ( 86 ) to the inverted balloon neck ( 84 ).

Apparatus and Method for Ablating Tissue

A control system alters one or more characteristics of an ablating element to ablate tissue. In one aspect, the control system delivers energy nearer to the surface of the tissue by changing the frequency or power. In another aspect, the ablating element delivers focused ultrasound which is focused in at least one dimension. The ablating device may also have a number of ablating elements with different characteristics such as focal length.

Balloon Resection Method

A balloon resection method is disclosed generally comprising inserting a catheter with at least one balloon having an outer wall with a resecting, non-slip surface for resecting unwanted biological material, such as tissues or tumors, and supplying fluid thereto in pulsed fashion to repeatedly deflate and inflate the balloon. In certain embodiments, a pump controls the pulsed supply of fluid based on an established frequency or change in volume. In some embodiments, the a keyed connector is used to identify the balloon type, and in some cases, intra-lumen diameters and densities are calculated. In some embodiments, the balloon portion of the catheter includes multiple balloon segments, which in some cases, are inflatable separately from one another.

Apparatus and method for guided chronic total occlusion penetration

An apparatus and method for guided penetration of a chronic total occlusion in a blood vessel are disclosed. The invention is directed to an apparatus that facilitates accurate placement of a drilling tip within a body lumen using ultrasound-based detection to determine the position of the intravascular catheter relative to the vessel occlusion and vessel walls.

Apparatus and methods for clot dissolution

Clot disruption and dissolution are achieved using a catheter having the ability to infuse a thrombolytic agent, aspirate clot and fluid, and allow passage of a guidewire. Optionally, the catheter may also include a mechanical agitator for further disrupt clot in the presence of the thrombolytic agent. A flow resistor in the catheter provides for infusion and/or aspiration to be concentrated primarily at a clot treatment area in a blood vessel while also providing optional infusion and/or aspiration distal to the treatment area. In some embodiments, infusion, aspiration and guidewire passage occur through a common lumen. The thrombolytic agent, such as tPA, streptokinase, or urokinase, is directly released into the clot at the point where the agitator is engaging the clot. In this way, the thrombolytic activity of the agent is enhanced and the dissolution of the clot is improved.

Methods and devices for diagnosing, monitoring, or treating medical conditions through an opening through an airway wall

Methods and devices for diagnosing, monitoring, and/or treating tissue through an opening or port through an airway wall are provided herein.

Methods and systems for performing thrombectomy procedures

The present invention relates to methods and systems for performing intralumenal procedures including revascularization and removal of foreign objects from a body lumen. More particularly the present invention relates to systems utilizing thrombectomy devices and methods of performing medical procedures to remove thrombus, emboli, foreign objects and or re-establish the intravascular flow of blood.

Low-profile ultrasound transducer

The present invention relates to a low-profile ultrasound transducer. The low-profile ultrasound transducer includes a piezoelectric component operative to receive a driving signal from an energy generating module and to emit the driving signal as ultrasonic energy. The piezoelectric component has a front surface and a back surface, and the energy generating module includes a plurality of electronic components. The low-profile ultrasound transducer also includes a lens component directly or indirectly deposited on the front surface of the piezoelectric component. The lens component includes a lens portion and a support portion. The lens portion of the lens component is configured to control the direction and wave pattern of the ultrasonic energy emitted from the piezoelectric component. The support portion of the lens component is configured to hold the piezoelectric component in place and to provide a chamber for housing at least one electronic component of the energy generating module. Methods of use and related devices are also disclosed.

Obstruction removal assembly

A clot removal device ( 10 ) includes a conical retrieval member ( 14 ) affixed to a wire ( 12 ) The conical retrieval member ( 14 ) has an apex ( 16 ) at its distal end, and a base that forms an opening ( 18 ) into a cavity The conical retrieval member ( 14 ) is formed from a thin sheet of Nitinol film, and expands into its conical configuration at body temperature The clot removal device ( 10 ) can be used physically to withdraw a blood clot ( 40 ) from a blood vessel ( 42 ) without requiring aspiration The member ( 14 ) can be pulled by a cord ( 90 ) to cause it to rewrap onto itself, in so doing to capture an obstruction such as a thrombus.

Sparker Array Source

A sparker array includes a plurality of sparker sources of sound and light emissions, the plurality of sparker sources arranged in a geometric pattern with respect to a region, the array configured to deliver a maximal acoustic output to the region. Sparker sources may include reflectors. A single electrical source to drive a sparker array may be employed. A sparker system may include two or more sparker arrays. A time delay may be employed to trigger electrical circuits of the sparker arrays. Sparker arrays may be used to deliver shock waves with increased operational life, consistency and efficacy for specific applications.

Methods and systems for treatment of acute ischemic stroke

Described are methods and systems for transcervical access of the cerebral arterial vasculature and treatment of cerebral occlusions, including ischemic stroke. The methods and devices may include methods and devices which may provide aspiration and passive flow reversal, those which protect the cerebral penumbra during the procedure to minimize injury to brain, as well as distal catheters and devices to remove an occlusion. The methods and devices that provide passive flow reversal may also offer to the user a degree of flow control. Devices and methods which provide a way to securely close the access site in the carotid artery to avoid the potentially devastating consequences of a transcervical hematoma are also described.

Apparatuses and systems for generating high-frequency shockwaves, and methods of use

Apparatuses and methods for generating therapeutic shock waves. Some embodiments comprise: an acoustic-wave generator configured to emit acoustic waves having at least one frequency between 1 MHz and 1000 MHz; a shock wave housing coupled to the acoustic-wave generator; and a shock wave medium disposed in the shock wave housing; where the apparatus is configured such that if the acoustic-wave generator emits acoustic waves then at least some portion of the acoustic waves will travel through the shock wave medium and form one or more shock waves.

Magnetic based device for retrieving a misplaced article

A device for locating and retrieving a misplaced foreign body that has metallic characteristics includes a shaft connected to a handle and a retrieval tool that is coupled to the shaft and moves between a deployed position and collapsed position. The tool has a magnetic element that generates a magnetic field, wherein the magnetic field extends over a greater area in the deployed position and is of sufficient strength to attract the foreign body such that it is held in contact with the tool. The device can be part of an automated robotic system and can also include a metal detector to assist in locating the misplaced foreign body.

Medical Retrieval Devices

A medical retrieval device may include an elongated member having first and second end portions and a middle portion. The elongated member may be configured such that the first and second end portions are proximal one another and extend substantially parallel to one another along a longitudinal axis. The middle portion may have an unconstrained basket configuration. A first sheath may be configured to receive at least a portion of the first end portion, and a second sheath may be configured to receive at least a portion of the second end portion. At least one of the first and second sheaths may be movable relative to the middle portion so as to constrain the middle portion in an elongated configuration.

Steerable stone basket

A medical device includes a sheath defining a lumen, a first elongate member, and a second elongate member. The first and second elongate members are movably disposed within the lumen. The medical device further includes a basket comprising a plurality of legs and a mesh portion. A proximal end of each leg of the plurality of legs is connected to the first elongate member, and a proximal end of the mesh portion is connected to the second elongate member.

ULTRASOUND CATHETER FOR DISRUPTING BLOOD VESSEL OBSTRUCTIONS

Ultrasound catheter devices and methods provide enhanced disruption of blood vessel obstructions. Generally, an ultrasound catheter includes an elongate flexible catheter body with one or more lumens. An ultrasound transmission member or wire extends longitudinally through the catheter body lumen and, in many embodiments, a guide wire tube also extends through the same lumen. A distal head is fixed to or otherwise mechanically coupled with the distal end of the ultrasound transmission member or wire and is positioned adjacent the distal end of the catheter body. Although the distal end of the catheter body overlaps the distal head, the distal head is not directly affixed to the distal end of the catheter body. Thus, the distal tip may move freely, relative to the distal end of the catheter body when ultrasonic energy is applied through the ultrasound transmission member. Such a freely floating distal head enhances the efficiency of an ultrasound catheter, enabling the catheter to ablate calcific occlusions and increasing the useful life of the ultrasound transmission member and catheter. 1. A catheter comprising:an elongate body forming a lumen and having a proximal end and a distal end;a first side aperture disposed in the body;a second side aperture disposed in the body;an ultrasound transmission member extending through the lumen of the body;a head being coupled to the ultrasound transmission member; anda guide wire tube extending from the first side aperture to the head, the guide wire tube being coupled to the body at a location between the distal end and the second side aperture.2. The catheter of claim 1 , wherein the location is between the distal end and the first side aperture.3. The catheter of claim 1 , wherein the first side aperture is on a distal side of the second side aperture.4. The catheter of claim 1 , wherein the guide wire tube is coupled to the body at a second location.5. The catheter of claim 4 , wherein the second location is between the ...

METHODS AND APPARATUS FOR FLOW RESTORATION

Methods for restoring blood flow in occluded blood vessels using an apparatus having a self expandable distal segment that is pre-formed to assume a superimposed structure in an unconstrained condition but can be made to take on a volume-reduced form making it possible to introduce it with a microcatheter and a push wire arranged at the proximal end, with the distal segment in its superimposed structure assuming the form of a longitudinally open tube and having a mesh structure of interconnected strings or filaments or struts. In a preferred embodiment, the distal segment has a tapering structure at its proximal end where the strings or filaments or struts converge at a connection point. 1. A method for restoring localized blood flow in a cerebral blood vessel occluded with a thrombus , comprising:delivering a thrombus-removal apparatus through a microcatheter to a site of the thrombus in the cerebral blood vessel, the apparatus comprising a self-expandable tubular structure having a plurality of cells, the structure being configured to assume an expanded configuration at the site, and to be modified into a compressed configuration for delivery through the microcatheter, the compressed configuration having a smaller cross-sectional dimension than the expanded configuration, the structure being configured to expand into the thrombus when transitioning from the compressed configuration to the expanded configuration; andexpanding the structure at the site, by proximally withdrawing the microcatheter from over the structure, such that at least an outer portion of the structure engages and applies an outward radial force on the thrombus, whereby the structure interlocks with at least a portion of the thrombus; andremoving at least a portion of the thrombus by retracting the apparatus.2. The method of claim 1 , wherein a distal end of the structure has a greater diameter than a proximal end of the structure.3. The method of claim 1 , wherein expanding the apparatus ...

DEVICE AND METHOD FOR FRAGMENTING AND REMVOING CONCRETIONS FROM BODY DUCTS AND CAVITIES

A medical device and method for breaking a concretion in a body into smaller pieces and removing the pieces from the body are described. The device comprises a dilator sheath, a lithotripsy probe, a tubular member, and a retrieval basket. The dilator sheath adapted to penetrate into a passage of the body to reach the location where the concretion is located. The lithotripsy probe is configured for shattering the concretion into smaller pieces. The tubular member is mounted within the dilator sheath adapted to permit the lithotripsy probe to be inserted into the tubular member. The retrieval basket is coupled to the tubular member, and configured for entrapping the concretion and the smaller pieces for their extraction from the body. The retrieval basket comprises a structure constituted by a plurality of filaments extending from a basket proximal end towards a basket distal end, and then returning to the proximal end after forming a plurality of filament loops in the basket distal portion, and a plurality of filament strands at the basket proximal portion. 1. A medical device for breaking a concretion in a body it into smaller pieces and removing the pieces from the body , comprising:a dilator sheath adapted to penetrate into a passage of the body to reach the location where the concretion to be shattered into smaller pieces is located;a lithotripsy probe configured for shattering the concretion into smaller pieces;a tubular member located within the dilator sheath and being separate from the lithotripsy probe, the tubular member having a tubular member proximal end, a tubular member distal end and an axially extending inner lumen provided within the tubular member to permit the entire lithotripsy probe to be inserted into the tubular member from the proximal end; anda retrieval basket coupled to said tubular member at the tubular member distal end, and configured for entrapping and retaining the concretion and the smaller pieces for their extraction from the body, ...

ATHERECTOMY DEVICES AND METHODS

The devices and methods generally relate to treatment of occluded body lumens. In particular, the present devices and method relate to removal of the occluding material from the blood vessels as well as other body lumens. 170-. (canceled)71. A device for removing material from a body lumen , the device comprising:a catheter comprising a slotted tube and having a proximal end, a distal end, a distal portion having a first slot pattern, a proximal portion having a second slot pattern, and a catheter lumen extending therethrough;a cutter assembly located at the distal end of the catheter;a torque shaft extending through the catheter lumen and attached to the cutter assembly for rotating a cutter of the cutter assembly; anda sweep sheath slidable relative to the catheter, the sweep sheath comprising a curved distal portion,wherein the curved distal portion is stiffer than the distal portion of the catheter and is less stiff than the proximal portion of the catheter, and wherein the sweep sheath is advanceable from a first position in which the proximal portion of the catheter straightens the curved distal portion of the sweep sheath to a second position in which the curved distal portion of the sweep sheath deflects the distal portion of the catheter.72. The device of further comprising a lumen extending through the torque shaft and the cutter accommodating passage of a guide wire.73. The device of wherein the cutter comprises a plurality of cutting flutes.74. The device of where an edge of each of the cutting flutes is helical.75. The device of wherein the torque shaft has at least one helical conveyor member wound about an exterior such that rotation of the torque shaft conveys material across a length of the torque shaft.76. The device of further comprising a guide wire.77. The device of further comprising a burr rotatably located on a tip of the cutter assembly. This application claims the benefit of U.S. Provisional Patent Application Ser. No. 61/043,998, filed Apr ...

Device and methods for renal nerve modulation

Systems for nerve modulation are disclosed. An example system may include a first elongate element having a distal end and a proximal end and having at least one transducer disposed adjacent the distal end. The transducer may be an ultrasound transducer. Activation of the transducer may radiate acoustic energy from in two directions simultaneously.

METHOD AND DEVICE FO EXTRACTING OBJECTS FROM THE BODY

A device for extracting (or inserting) objects from the body, such as urinary stones, using a low pressure inflatable toroidal balloon that serves to engulf the object during extraction (or insertion) while dilating and protecting the passageway. The balloon loads onto an ureteroscope prior to insertion, rather than through the ureteroscope as do existing balloons. The toroidal balloon is a simple and unique device that may be applied external to the extracting telescope and does not interfere with existing methods for stone manipulation such as laser lithotripsy, irrigation and basket extraction in the case of urinary stone manipulation. 1. An apparatus used to remove a unwanted object comprising:a guide; an internal balloon surface of said toroidal balloon contacting a unwanted object;', 'an external balloon surface of said toroidal balloon configured for contacting a biological wall;, "an expandable toroidal balloon pre-rolled and only attached to a distal end of said guide's external surface and is not attached to any other point of said guide, said toroidal balloon unrolled over a length of said guide such that said toroidal balloon's surface is displaced along longitudinal length and an external surface of said guide and such that said toroidal balloon is disposed external to said guide, said expandable toroidal balloon comprising:"}said expandable toroidal balloon draws a unwanted object via an inversion of said internal balloon surface and external balloon surface, with said inversion safely guiding removal of said unwanted object without sliding of said external balloon surface against any contacted biological wall, but by allowing low friction extraction by sliding of said internal balloon surface of said toroidal balloon.2. An expandable toroidal balloon as per claim 1 , wherein said toroidal balloon is externally attached to a scope.3. An expandable toroidal balloon as per claim 1 , wherein said toroidal balloon is externally attached to a medical ...

Embolic protection devices and related systems and methods

According to one aspect of the disclosure, an embolic protection device is provided comprising an elongate element having a deflector at its distal end. The embolic protection device is generally configured to redirect and/or funnel embolic debris and permit at least a portion of the blood, no longer containing the redirected and/or funneled embolic debris, to perfuse the surrounding vasculature and/or tissue.

ROTARY CATHETER FOR REMOVING OBSTRUCTIONS FROM BODILY VESSELS

A motorized rotary catheter, for breaking down and aspirating an obstruction from within a bodily vessel comprising a flexible tube containing a motor-driven, flexible, hollow shaft that is rotatable and slidable over a guidewire; a distal portion of the shaft is made of a closely wound spiraled wire and a distal portion of that spiraled wire is extendable out of a distal end of the tube; a bit affixed to a distal end of the spiraled wire forms therewith a tip that has first and second opposing sides for impacting and breaking down the obstruction as the shaft rotates; the tip also has a base and an opposing crown that is offset away from a longitudinal axis of the shaft further than the base is, enlarging the area that the tip sweeps as it rotates; a distance between the sides being smaller than a distance between the crown and the base, enhancing the ability of the tip to pass through tight spots along the vessel; as the tip rotates and the crown atraumatically slides against a wall of the vessel it displaces the distal end of the tip away from the wall to prevent the distal end of the tip from starting to tunnel through the obstruction too close to the wall. 1. A rotary catheter for breaking down and for aspirating particles of an obstruction from a bodily vessel , comprising in combination;a flexible tube containing a motor-driven, flexible, hollow shaft which is rotatable and slideable over a guidewire, at least a distal portion of said shaft being made of a spiraled wire,a bit affixed to a distal end of said spiraled wire and forming therewith a tip which extends out of said tube distally, said tip having a first side and an opposing second side, said first side adapted to impact said obstruction when said shaft and tip rotate in a first direction,said tip having a base and an opposing crown, said crown being offset away from a longitudinal axis of said shaft further than said base is offset from said longitudinal axis,a distance between said sides being ...

Valvulotome guided by a guide wire/catheter

The invention relates to a valvulotome ( 1 ) guided by guidewire/catheter comprising a guidewire ( 2 ), a first inner tube ( 3 ) accommodating the guidewire ( 2 ), an expandable basket ( 5 ) with cutting elements ( 7 ), with said basket ( 5 ) being the distal end of a second tube ( 4 ) through which the first inner tube ( 3 ) extends, a catheter tube ( 8 ) through which the second inner tube ( 4 ) extends, said catheter tube being suited to accommodate and guide the expandable basket ( 5 ) in non-expanded state, a sleeve ( 6 ) that forms the distal end of the first tube ( 3 ) and functions as limiting element for the distal end of the basket ( 5 ) and through which the guidewire ( 2 ) has been passed.

Flexible Vacuum Grabber for Holding Lesions

A grabbing device includes a transparent flexible cup that can be placed adjacent to a selected region of an inner surface of a body cavity. The flexible cup is visually put in place by the surgeon, and a vacuum is applied to draw a selected amount of tissue into the flexible cup, so that it may, e.g., be excised. The device may also retrieve the tissue excised from the body cavity. 122-. (canceled)23. A vacuum grabber device for insertion into a body via an insertion device , comprising:a hollow elongated rod extending from a proximal end accessible to a user to a distal end having a flexible cup attached thereto, the flexible cup being movable between a first folded configuration in which an outer profile of the flexible cup is smaller than a working channel extending through the insertion device and a second deployed configuration in which an outer profile of the flexible cup is greater than the working channel, the flexible cup configured to move from the first configuration to the second configuration upon deployment from an opening in the working channel, wherein the flexible cup moves from the first configuration to the second configuration due to a resilience of at least one of the flexible cup and a plurality of ribs associated with the cup.24. The vacuum grabber device of claim 23 , wherein the flexible cup is formed of a resilient elastic material biased to a funnel shape.25. The vacuum grabber device of claim 23 , wherein the flexible cup is biased to the second deployed configuration.26. The vacuum grabber device of claim 23 , wherein the plurality of resilient ribs are distributed over the flexible cup and force the flexible cup from the first configuration to the second configuration.27. The vacuum grabber device of claim 26 , wherein the ribs are one of embedded within claim 26 , positioned within and positioned outside of the flexible cup.28. The vacuum grabber device of claim 26 , wherein the ribs are one of planar and spiral.29. The vacuum grabber ...

Apparatus for Using Hydrodynamic Cavitation in Medical Treatment

An apparatus for using hydrodynamic cavitation in medical treatment such as destroying kidney stones or killing infected cancer cells. This apparatus comprises a tank used as a container for a fluid, a compressor connected to the tank to maintain the input pressure of the fluid, a tubing wherein the fluid flows, a probe in which the cavitation occurs, a valve positioned inside the tubing, allowing the fluid to flow into the probe, a filter positioned inside the tubing, preventing the predetermined size particles flowing into the probe, a fitting connecting the probe to the tubing, a flowmeter measuring the volume flow rate of the fluid through the probe, an image capturing unit capturing the sequential images of bubbles growing and bubbles collapsing after the bubbles exit from the probe, a positioning assembly which adjusts the distance between the probe and the target surface, and a control and data acquisition unit. 1. An apparatus for using hydrodynamic cavitation in medical treatment comprising;a tank used as a container for a fluid,a compressor which is connected to the tank in order to maintain an input pressure of the fluid,a tubing in which the fluid flows,a probe in which the cavitation occurs,a valve, which is positioned inside the tubing, allowing the fluid to flow into the probe,a filter, which is positioned inside the tubing, preventing a predetermined size particles flow into the probe,a fitting connecting the probe to the tubing,a flowmeter measuring a volume flow rate of the fluid through the probe,an image capturing unit capturing a plurality of sequential images of bubbles growing and collapsing of the bubbles after the bubbles exit from the probe,a positioning assembly which adjusts a distance between the probe and a target surface and,a control and data acquisition unit.2. An apparatus according to wherein the probe comprising a channel extends between two ends of the probe comprising of;an inlet region where the fluid enters into the channel ...

TARGETING MICROBUBBLES

This invention related to manufactured microbubbles, as well as methods of using manufactured microbubbles, for example, in medicinal applications. The invention pertains to the physical structure and materials of the microbubbles, as well as to methods for manufacturing microbubbles, methods for targeting microbubbles for specific medicinal applications, and methods for delivering microbubbles in medical treatment. 1. A targeting microbubble comprising:(a) a core containing a fluid having a normal boiling point less than about 30° C.;(b) an anchoring moiety comprising a bio-lipid, protein, surfactant, or synthetic polymer; and (i) a chemical group having an affinity for a metal-containing material; or', '(ii) a cell specific ligand., '(c) a targeting moiety comprising2. The targeting microbubble of claim 1 , wherein the anchoring moiety and the targeting moiety are linked via a covalent claim 1 , ionic claim 1 , or hydrogen-bonding linkage.3. The targeting microbubbles of claim 2 , wherein the anchoring moiety covalently attached to the targeting moiety.4. The targeting microbubble of claim 1 , further comprising a polymeric linker that covalently attaches the anchoring moiety to the targeting moiety.5. The targeting microbubble of claim 1 , wherein the fluid is air claim 1 , CO claim 1 , a fluorinated or perfluorinated Chydrocarbon claim 1 , or a combination thereof.6. The targeting microbubble of claim 5 , wherein the fluorinated hydrocarbon is perfluoropropane or perfluoropentane.7. The targeting microbubble of claim 5 , wherein the targeting moiety comprises a chemical group having an affinity for a metal-containing material.8. The targeting microbubble of claim 1 , wherein the chemical group comprises a chelant having at least two amino claim 1 , carboxy claim 1 , hydroxyl claim 1 , phosphoryl claim 1 , or thiol groups claim 1 , or a combination thereof claim 1 , said chelant having an affinity for the metal-containing material.9. The targeting microbubble of ...

SINGLE HAND SEMI-AUTOMATIC TISSUE MORCELLATOR

A morcellator is described which may be operated with one hand, thus providing semi-automatic functionality, for the reduction of solid tissue into smaller pieces, which may then transported and emptied into a specimen bag. The morcellator eliminates the need for stand-alone grasping forceps that are currently used to grasp and pull the tissue against a sharp rotating tubular conduit. The grasping, cutting and transporting of the tissue may be accomplished via the handheld morcellator which provides triggers and control buttons, thus eliminating conventional handheld graspers and foot switches. The surgeon can now hold the scope and visualize the morcellation arena, thus eliminating the need for a second surgeon presently used for this purpose. Moreover, the ability to perform morcellation single handedly, while holding the scope, improves control and avoids wasted time compared to the procedure when it is done by two surgeons. 1. A morcellator system for morcellating tissue , comprising:a conduit member including an end portion having a cutting surface formed thereon, wherein the conduit member includes an area defining a through bore extending therethrough;a jaw assembly including a pair of pivotable jaw members, wherein at least a portion of the jaw assembly is positioned proximate to the end portion of the conduit member; andan auger assembly at least partially received in the through bore of the conduit member, wherein at least a portion of the auger assembly is positioned proximate to the end portion of the conduit member.2. The morcellator system according to claim 1 , further comprising a first actuation system selectively operable to cause the jaw assembly to extend distally away from the end portion of the conduit member.3. The morcellator system according to claim 2 , further comprising a second actuation system selectively operable to cause the jaw members to pivot to an open position.4. The morcellator system according to claim 3 , further comprising a ...

Percutaneous Vein Removal Device

A surgical tool for the obliteration of spider veins. 1a stationary body adapted to be held and manipulated by a hand;a first lever arm adapted to be actuated by a finger; 'said first and second lever arms are opposed on the sides of said body;', 'a second lever arm adapted to be actuated by a finger;'}an axle passing though said first and second lever arms forming a pivot for each lever arm and anchoring the lever arms in said body;a first gear sector coupled to said first lever arm;a second gear sector coupled to said second lever arm;a pinion gear meshed with each gear sector to translate motion of the lever arms into a rotational motion of a pinion shaft;a tip assembly coupled to said shaft; 'whereby lever arm motion about the pivot rotates the tip assembly obliterating the vein by mechanical trauma.', 'said tip assembly having a hook with blunt surfaces adapted to capture a vein;'}. A surgical tool for obliterating a vein comprising: The present filing is a continuation in part of U.S. Utility Patent Application 12/766,165 entitled “Vein Removal Device” and further claims the benefit of U.S. Provisional Application 61/483,875 entitled “Macro-Phlebectomy Device”The present invention relates generally to vein obliteration technology and more particularly to a surgical instrument operated by a physician for locating, intercepting and obliterating spider veins.The heart pumps blood to supply oxygen and nutrients to all parts of the body. Arteries carry blood from the heart towards the body parts, while veins carry blood from the body parts back to the heart. Veins contain one-way valves to prevent the blood from flowing backwards. If the one-way valve becomes weak, some of the blood can leak backwards through the valve, collect in the vein upstream of the valve, and then become congested as the pressure builds. This congestion will cause the vein to abnormally enlarge. These enlarged veins can be seen on the surface of the skin as either varicose veins or spider ...

TISSUE AND STONE REMOVAL DEVICE AND RELATED METHODS OF USE

Embodiments of a medical device and related methods of use are provided for extracting tissue. The device may include an elongate member having a proximal end and a distal end. Two or more channels may extend through the elongate member from the proximal end to the distal end, and a morcellating device may be included in one of the channels. In addition, one of the channels may be configured as a return channel for extracting the morcellated tissue. 1. A medical device for extracting tissue , the device comprising:an elongate member having a proximal end and a distal end;two or more channels extending through the elongate member from the proximal end to the distal end; anda morcellating device configured to morcellate tissue, carried in one of the channels;wherein one of the channels is configured as a return channel, configured for extracting morcellated tissue.2. The device of claim 1 , wherein the elongate member is flexible.3. The device of claim 1 , wherein the elongate member is rigid.4. The device of claim 1 , wherein the morcellating device is a laser fiber secured in the return channel.5. The device of claim 4 , wherein the return channel further includes a metallic tip secured to a distal end of the return channel.6. The device of claim 1 , wherein the distal end of the elongate member includes a metallic tip.7. The device of claim 6 , wherein the tip includes a lumen having an inner diameter smaller than that of an inner diameter of the return channel.8. The device of claim 5 , wherein the laser fiber is secured to an inner surface of the metallic tip with a resin that occupies a portion of an inner diameter of the tip.9. The device of claim 1 , wherein the return channel is operably coupled to a suction device.10. The device of claim 1 , wherein the return channel is tapered at the distal end.11. The device of claim 1 , further including a visualization device in one of the channels.12. The device of claim 1 , further including a light source carried in ...

TWO-STAGE SNARE-BASKET MEDICAL DEVICE

The present invention relates to a medical device which can be used to resect and remove polyps, stones or foreign bodies. It accomplishes this goal by using a variable configuration basket which may act as a snare and a maneuverable basket. The various wires of the variable configuration basket are controllable by the operator. 1. A medical instrument for trapping tissue , polyps , stones and other foreign bodies for retrieval from a body comprising:a control unit;an elongated tubular element having an inner channel, wherein the inner channel extends from the control unit to a distal end of the tubular element;a first set of wires forming a snare configuration, extending from the control unit through the inner channel of the tubular element, and juxtaposed and held in a single loop at the distal end of the inner channel, wherein the single loop can be at least partially retracted into and extended beyond the distal end of the inner channel via the control unit;at least one wire having a proximal end and a distal end, and forming a basket configuration by converting the snare configuration via the control unit,wherein the basket as defined by the presence of the first set of wires and the at least one wire comprises some or all of the distal ends of the first set of wires and the at least one basket wire, all of which may be connected, contiguous, attached, juxtaposed, or nearly juxtaposed to each other at a common pivot point.2. The medical instrument of claim 1 , wherein the first set of wires and the at least one basket wire are initially equidistant claim 1 , or nearly equidistant claim 1 , or some other configuration of distances from each other such that they can secure a stone or other material acquired from a body cavity when the first set of wires and the at least one basket wire form a basket around said stone or other material.3. The medical instrument of claim 1 , wherein the at least one basket wire can be manipulated by the control unit in order to ...

Rapid exchange fluid jet catheter and method

Catheters including guidewire tubes having a limited length and methods of using the catheters are described. The catheters may be delivered over guidewires in procedures that are commonly referred to as rapid-exchange delivery. In some embodiments, the catheters may be miniature flexible thrombectomy catheters that may be used to remove thrombus or other unwanted material from a body blood vessel or other small regions of body cavities in which the distal portion of the catheter has smaller external dimensions than the larger proximal portion

METHOD AND APPARATUS FOR INCREASING BLOOD FLOW THROUGH AN OBSTRUCTED BLOOD VESSEL

A method of increasing blood flow through an obstructed blood vessel includes providing an expandable member substantially made of a mesh having a plurality of interstices. The expandable member is inserted into the blood vessel, positioned within the blood vessel with the proximal member end upstream of the distal member end and the member body located radially adjacent at least a portion of an obstruction, and expanded to bring at least a portion of the member body into contact with the obstruction. An outward radial force is exerted on the obstruction to dislodge at least one fragment from the obstruction and to enhance blood flow through the blood vessel past the obstruction. The at least one fragment is passed through at least one interstice of the member body in the radial direction, and is selectively retained within the expandable member. 1. A method of treating an obstructed vessel , the method comprising the steps of:positioning an expandable member having a tubular member body substantially made of a mesh having a plurality of interstices within an obstructed vessel radially adjacent to at least a portion of an obstruction in the obstructed vessel, with a proximal end of the tubular member body upstream of a distal end of the tubular member body and the tubular member body;dislodging at least one fragment from the obstruction by exerting an outward radial force on the obstruction by expanding the expandable member; andpassing the at least one fragment radially inwardly through at least one interstice of the tubular member body.2. The method of claim 1 , wherein at least one of the plurality of interstices is defined by a plurality of strands claim 1 , and the step of dislodging said at least one fragment from the obstruction comprises the steps of:forcing the plurality of strands into penetrating contact with the obstruction; andseparating said at least one fragment from a remaining portion of the obstruction through radial penetration of the strands into ...

Substaintially rigid and stable endoluminal surgical suite for treating a gastrointestinal lesion

Exemplary embodiments of devices and method for affecting at least one anatomical tissue can be provided. A configuration can be provided that includes a structure which is expandable (i) having and/or (ii) forming at least one opening or a working space through which the anatomical tissue(s) is placed in the structure. For example, the structure, prior to being expanding, can have at least one partially rigid portion. In addition, or as an alternative, upon a partial or complete expansion thereof, the structure can be controllable to have a plurality of shapes. Further, the structure can be controllable to provide the working space with multiple shapes and/or multiple sizes.

Method and apparatus for biliary access and stone retrieval

Endoscopes, endoscopic instruments, and methods for making and using the same. An illustrative endoscopic instrument includes a catheter that can extend through the working channel of an endoscope. The catheter may include an end effector passing region.

Embolic protection device and method of use

A method of embolic protection during a medical procedure in a patient's body vessel includes inserting a medical device having an outer tubular member and an inner tubular member into the body vessel. A flexible filter portion has one end attached to the distal end of the inner tubular member and the other end attached to the distal end of the outer tubular member. The filter portion is deployed within the body vessel so that the filter portion extends distally from the outer tubular member and expands radially outward to engage the filter body with an enclosing body vessel wall. A medical instrument is inserted through the inner tubular member to perform the medical procedure. The filter portion allows the passage of blood cells to surrounding vessels and prevents emboli from entering surrounding vessels. After removing medical instrument, the medical device is also removed from the body vessel.

Devices, Systems, and Methods for Visualizing an Occluded Vessel

Embodiments of the present disclosure are configured to visualize severe blockages in a vessel and, in particular, chronic total occlusions in blood vessels. In some particular embodiments, the devices, systems, and methods of the present disclosure are configured to visualize the blockage to facilitate safe crossing of the blockage. 1. A method of crossing a severe occlusion of a vessel of a patient , the method comprising:introducing a flexible, elongate imaging device into the vessel of the patient,advancing the imaging device to a position immediately adjacent the severe occlusion of the vessel such that a tapered distal tip of the imaging device is in contact with the occlusion and such that at least one imaging element of the imaging device is spaced from the occlusion by a distance less than 5 mm; andobtaining images of the vessel, including the occlusion, with the imaging device positioned immediately adjacent the severe occlusion.2. The method of claim 1 , wherein the imaging device is an ultrasound device and wherein the at least one imaging element is an ultrasound transducer.3. The method of claim 1 , wherein the imaging device is an optical coherence tomography device and wherein the at least one imaging element is an optical fiber or a reflector.4. The method of claim 1 , wherein the flexible claim 1 , elongate imaging device is a catheter.5. The method of claim 4 , wherein the catheter is a rapid-exchange catheter.6. The method of claim 4 , wherein the catheter is an over-the-wire catheter.7. The method of claim 4 , further comprising penetrating the severe occlusion based on the images obtained by the imaging device.8. The method of claim 7 , wherein penetrating the severe occlusion includes advancing an occlusion crossing device through a central lumen of the catheter to the occlusion.9. The method of claim 8 , wherein the occlusion crossing device is an ablation device.10. The method of claim 9 , wherein the occlusion crossing device is a puncture ...

Immobilizing objects in the body

Stabilizing an object in the body of a patient involves the injection of a lower critical solution temperature (LCST) material or other flowable material into the body of the patient so that the material contacts the object. The LCST material or other flowable material then forms a gel in the body such that the object is contained at least partially within the gel and thereby stabilized by the gel such that the object can then be easily fragmented within the body and/or retrieved from the body.

Mechanical wave generator and method thereof

A wave generator has a wave emitter including an elongated dispersive waveguide and a source operatively connected to a first end of the waveguide. The source covers at least partially a surface area thereof. A signal generator is in operative connection with the transducer to create electrical signals. A computer is in operative connection with the signal generator to cause it to generate the electrical signals. A mechanical input wave is created by the source at the first end of the waveguide. The mechanical input wave is constructed independently of data related to a mechanical wave received from a source in the medium and taking into account the different predetermined propagation velocities of at least two component waves of the mechanical input wave so that they combine with each other at a second end of the waveguide to form the desired mechanical output wave in the medium.

Ultrasonic irradiation device

An ultrasonic irradiation device includes a sound source, a holding member, a first support member and a second support member. The sound source is configured to be placed in a space at least a part of which is covered with a wall surface and emit an ultrasonic wave toward a target area. The holding member is configured to hold the sound source. The first support member is configured to push a first area of the wall surface so that a distance between the sound source and the target area is kept at a predetermined value, the first supporting member being disposed on the holding member. The second support member is configured to push a second area of the wall surface including an area other than the first area so that the sound source is fixed to the wall surface together with the first support member.

METHOD AND APPARATUS FOR INCREASING BLOOD FLOW THROUGH AN OBSTRUCTED BLOOD VESSEL

A method of increasing blood flow through an obstructed blood vessel includes providing an expandable member substantially made of a mesh having a plurality of interstices. The expandable member is inserted into the blood vessel, positioned within the blood vessel with the proximal member end upstream of the distal member end and the member body located radially adjacent at least a portion of an obstruction, and expanded to bring at least a portion of the member body into contact with the obstruction. An outward radial force is exerted on the obstruction to dislodge at least one fragment from the obstruction and to enhance blood flow through the blood vessel past the obstruction. The at least one fragment is passed through at least one interstice of the member body in the radial direction, and is selectively retained within the expandable member. 1. An expandable member and a delivery system for removing an obstruction from a blood vessel , comprising:a delivery system; andan expandable member comprising:a proximal member end permanently attached to the delivery system;a distal member end;a member body extending between the proximal and distal member ends and, the member body expandable from a first diameter to a second diameter, the second diameter being larger than the first diameter, such that when the member body is expanded to the second diameter, the member body contacts at least a portion of the obstruction within a blood vessel to enhance blood flow through the blood; andsaid member body further comprising at least a portion of the member body made of a first mesh having a plurality of first interstices, at least one of the first interstices being adapted to allow passage of at least one dislodged portion of the obstruction therethrough in a radial direction into the member body.2. The expandable member and the delivery system of claim 1 , wherein the obstruction is dislodged by fracturing a portion of the obstruction.3. The expandable member and the ...

APPARATUS, SYSTEMS, AND METHODS FOR REMOVING OBSTRUCTIONS IN THE URINARY TRACT

Systems and methods are provided for removing an obstruction from a ureter using a catheter including a distal end sized for introduction into a ureter, an infusion lumen, and an aspiration lumen. An infusion tip is provided on the distal end that includes infusion ports communicating with the infusion lumen, and one or more aspiration ports communicating with the aspiration lumen. One or more sources of fluid and/or vacuum are connectable to the tubular member such that fluid is delivered into the infusion lumen and suction is delivered into the aspiration lumen. A controller is coupled to the source(s) to control delivery of fluid to generate a radially outward pressure against a wall of a ureter adjacent the infusion tip and to control suction through the aspiration port(s) to apply a suction force against a kidney stone located adjacent the infusion tip. 1. A method for facilitating movement of an obstruction through a ureter communicating with a bladder of a body , the method comprising:introducing fluid into a portion of the ureter between the obstruction and the bladder to dilate a wall of the ureter to reduce a frictional force exerted by the ureter wall on the obstruction; andapplying suction to at least one of the introduced fluid or the obstruction such that the obstruction moves towards the bladder.2. The method of claim 1 , wherein the introduced fluid exerts an amount of force on the ureter wall such that removal forces applied to the obstruction are greater than the frictional force exerted by the ureter wall on the obstruction claim 1 , wherein the removal forces comprise at least one of suction claim 1 , gravity claim 1 , pulling force applied by a basket or other pulling member on a removal device claim 1 , or hydrodynamic force generated by the introduced fluid.3. The method of claim 2 , wherein the removal forces include peristaltic force.4. The method of claim 3 , wherein the fluid is introduced into the ureter in such a way as to induce ...

INTRAVASCULAR DEVICE

An intravascular device can comprise a carrier and an expansion apparatus. The device can be used for intravascular treatment of atherosclerotic plaque. The carrier can be reversibly expandable and collapsible within a vessel and can have ribbon strips extending between opposite ends in a longitudinal direction of the carrier. The ribbon strips can each be formed with a plurality of elongated protrusions thereon. The expansion apparatus can be used to actuate the ribbon strips each with the plurality elongated protrusions to pierce a luminal surface of the plaque with lines or patterns of microperforations which act as serrations for forming cleavage lines or planes in the plaque. 1. A method for treating atherosclerotic plaque intravascularly comprising:perforating and serrating the plaque by forming microperforations with lines or patterns of small sharp spikes actuated by expansion to pierce a luminal surface of the plaque, wherein the microperforations act as serrations for forming cleavage lines or planes in the plaque that facilitate expansion of the artery at a plaque site.2. The method of claim 1 , further comprising performing a balloon angioplasty to compress the plaque and enlarge the lumen at the plaque site.3. The method of claim 1 , wherein expansion to pierce a luminal surface of the plaque further comprises actuating an expansion apparatus at low expansion pressure to compress the plaque a given amount and enlarge the lumen at the plaque site.4. The method of claim 3 , further comprising applying one or more annular tacks to secure the plaque at the plaque site.5. The method of claim 1 , wherein the spikes are actuated by low expansion pressures of 4 atmospheres or less to create microperforations and cause serration of the plaque.6. The method of claim 2 , wherein the subsequent balloon angioplasty is performed at low expansion pressure of 4 atmospheres or less.7. The method of claim 2 , further comprising transporting medication into the plaque ...

Confinement of Kidney Stone Fragments During Lithotripsy

The present invention improves significantly the success rate of lithotripsy and reduces the risk of tissue damage, by injecting a temporary plug in front, and optionally behind a concretion (for extracorporeal lithotripsy) or behind a concretion (for intracorporeal lithotripsy). One aspect of the present invention relates to injecting an inverse thermosensitive polymer solution into a lumen, thereby preventing the migration of a concretion, or its fragments, upon extracorporeal or intracorporeal lithotripsy. 1. A method of mitigating risk of damage to surrounding body tissue during lithotripsy on a concretion located in a lumen of the body , the method comprising:introducing a solution comprising an inverse thermosensitive polymer at a location distal the concretion in the lumen;forming a temporary plug in the lumen by gellation of the solution;deploying an energy source proximate to the concretion on the opposite side of the concretion relative to the location of the temporary plug in the lumen; andapplying energy to the concretion with the energy source sufficient to fragment the concretion and propel one or more fragments of the concretion into the temporary plug; wherein the temporary plug is configured such that it is capable of withstanding impact with fragments of the concretion and prevent further migration of the fragments down the lumen beyond the location of the temporary plug, wherein the inverse thermosensitive polymer is a purified poloxamer or poloxamine.211071307338407. The method of claim 1 , wherein said inverse thermosensitive polymer is selected from purified poloxamine claim 1 , purified poloxamine claim 1 , purified poloxamer and purified poloxamer .3. The method of claim 2 , wherein said composition comprising an inverse thermosensitive polymer further comprises a contrast-enhancing agent.4. The method of claim 3 , wherein said contrast-enhancing agent is selected from the group consisting of radiopaque materials claim 3 , paramagnetic ...

Non-Lithotripsic Kidney-Stone Therapy

One aspect of the present invention relates to a method of using peristalsis to force a polymer plug through a mammalian lumen, thereby removing any calculi and/or calculi fragments present in the lumen. In one embodiment, the method is used as an alternative to conventional lithotripsy. In another embodiment, the method is used in conjunction with lithotripsy, thereby removing the small calculi fragments that result from such procedures. 1. A method of treating lithiasis , comprising the steps of:injecting into a lumen of a mammal at a first distance upstream from a calculi a first composition comprising between 12 and 25 weight percent of an inverse thermosensitive polymer selected from a block copolymer, random copolymer, graft polymer, or branched copolymer, wherein said first composition does not initially contact said calculi; thereby forming a polymer plug; and removing the calculi from the lumen by movement of the polymer plug by peristalsis to traverse said lumen, thereby forcing said calculi from said lumen.2. The method of claim 1 , further comprising injecting into said lumen a second composition at a second distance upstream from said calculi wherein said second composition does not contact said calculi.3. The method of claim 1 , wherein said first distance is between about 1 cm and about 5 cm upstream of said calculi.4. The method of claim 2 , wherein the distance between said first distance and said second distance is less than about 3 mm.5. The method of claim 1 , wherein said first composition is injected into said lumen through a percutaneous access device.6. The method of claim 1 , wherein said lumen is or is a portion of a kidney claim 1 , gall bladder claim 1 , ureter claim 1 , urinary bladder claim 1 , pancreas claim 1 , salivary gland claim 1 , small intestine claim 1 , or large intestine.7. The method of claim 1 , wherein said lumen is or is a portion of a ureter or kidney.8. The method of claim 1 , wherein said calculi is a kidney stone ...

Reusable Surgical Retrieval Apparatus with Disposable Cartridge Assembly

A surgical retrieval apparatus includes a tube assembly, a cartridge assembly, and a plunger assembly. The cartridge assembly is releasably engagable with the tube assembly and includes an end effector assembly disposed therein. The end effector assembly includes a specimen retrieval bag releasably coupled thereto at a distal end thereof and a first engagement member disposed at a proximal end thereof. The plunger assembly is configured for insertion through the tube assembly and into the cartridge assembly. The plunger assembly includes a second engagement member configured for releasably engaging the first engagement member. When the first and second engagement members are engaged with one another, the plunger assembly is movable between a more proximal position, wherein the end effector assembly and specimen retrieval bag are retracted within the cartridge assembly, and a more distal position, wherein the end effector assembly and specimen retrieval bag are deployed from the cartridge assembly. 1. A surgical retrieval apparatus , comprising:a tube assembly having a lumen extending longitudinally therethrough;a cartridge assembly including an end effector assembly operably coupled thereto, the cartridge assembly releasably engagable with the tube assembly, the end effector assembly including a specimen retrieval bag releasably coupled thereto at a distal end thereof and a first engagement member disposed at a proximal end thereof; anda plunger assembly configured for insertion at least partially through the lumen of the tube assembly and into the cartridge assembly, the plunger assembly including a second engagement member configured to releasably engage the first engagement member of the end effector assembly, wherein, when the first and second engagement members are engaged with one another, the plunger assembly is movable relative to the tube assembly and the cartridge assembly between a more proximal position, wherein the end effector assembly and specimen ...

ROTATIONAL THROMBECTOMY WIRE WITH BLOCKING DEVICE

A thrombectomy apparatus for breaking up thrombus or other obstructive material in a lumen of a vascular graft or vessel. The apparatus includes a wire having a first configuration and a second deployed configuration, the wire having a straighter configuration in the first configuration. The wire is operatively connected to a motor for rotation of the wire to contact and break up the thrombus or other obstructive material. A blocking device at a distal portion of the apparatus is movable between a collapsed configuration and an expanded configuration, and is configured in the expanded configuration to block thrombus dislodged by rotation of the wire. 122-. (canceled)23. A thrombectomy apparatus for breaking up thrombus or other obstructive material in a lumen of a vascular graft or vessel , the apparatus comprising a rotatable thrombectomy wire , the wire being operatively connected to a motor for rotation of the wire to contact and break up the thrombus or other obstructive material , and a blocking device at a distal portion of the apparatus , the blocking device configured to block thrombus dislodged by rotation of the wire , wherein the wire spins independent of the blocking device such that the blocking device remains substantially stationary as the wire rotates to break up thrombus or other obstructive material.24. The thrombectomy apparatus of claim 23 , wherein the wire is sinuous in configuration and assumes its sinuous configuration when in a deployed configuration claim 23 , and is insertable in a collapsed configuration.25. The thrombectomy apparatus of claim 24 , wherein the blocking device is movable between a collapsed configuration and an expanded configuration.26. The thrombectomy apparatus of claim 23 , wherein the blocking device includes a tubular portion connected to a distal end of the wire claim 23 , the wire rotatable independent of the tubular portion.27. The thrombectomy apparatus of claim 23 , wherein the blocking device includes a ...

MULTIPLE MEDICAL DEVICE GUIDANCE

A system and method for providing image guidance for placement of one or more medical devices at a target location. The system receives emplacement information of medical devices within a predetermined area. The system calculates a viewing angle in a virtual 3D space of a plurality of virtual medical devices corresponding to the plurality of medical devices. The system also causes a display device to display the plurality of virtual medical devices based at least on the calculated viewing angle. 1. A method , comprisingreceiving emplacement information of a plurality of needles;receiving emplacement information of a medical imaging device;receiving at least one image from the medical imaging device;calculating a first viewing angle in a virtual 3D space of the at least one image based at least on the emplacement information of the medical imaging device with respect to a perspective view;calculating a second viewing angle in the virtual 3D space of a virtual medical imaging device corresponding to the medical imaging device based at least on the emplacement information of the medical imaging device with respect to the perspective view;calculating a plurality of viewing angles in the virtual 3D space of a plurality of virtual needles corresponding to the plurality of needles based at least on the emplacement information of the plurality of needles with respect to the perspective view;causing the display device to display the at least one image based at least on the first calculated viewing angle in the virtual 3D space;causing the display device to display the virtual medical imaging device based at least on the second calculated viewing angle in the virtual 3D space; andcausing a display device to display the plurality of virtual needles based at least on the plurality of calculated viewing angles in the virtual 3D space.2. A method , comprisingreceiving emplacement information of a plurality of medical devices within a predetermined area;calculating a viewing angle ...

Surgical Disc Removal Tool

The disclosure provides a tissue removal device including customizable tips. The tissue removal device may include an outer shaft and a threaded shaft. One aspect of disclosure may include a shaft cutting tool that emerges from the end of the outer shaft. Another aspect of the disclosure may include a flexible cutting blade extending from the threaded shaft. Threaded shaft may be driven by a driving mechanism in order to provide an auger-like suction mechanism to facilitate the transfer of removed tissue to a collection chamber that is coupled to the outer shaft and the threaded shaft.

Clot engagement and removal system

A clot retrieval apparatus 1 comprises a clot engaging device 2 and a capture basket 3. The clot engaging device 2 has a collapsed delivery configuration and an expanded deployment configuration. The clot engaging device has a proximal end and a distal end and an elongate body between the proximal end and the distal end. The capture basket 3 has a collapsed delivery configuration and an expanded deployment configuration. The capture basket 3 has a proximal mouth which is open when the capture basket 3 is in the deployment configuration. The clot engaging device 2 is axially movable relative to the capture basket for capture of a clot.

Selective accumulation of energy with or without knowledge of tissue topography

Medical devices and methods for making and using medical devices are disclosed. An example method may include a method for heating a body tissue region adjacent to a body lumen. The method may include positioning an energy delivery portion of a catheter within the lumen and engaging the body lumen with the energy delivery portion. Engaging the body lumen may complete a plurality of circuits. The method may also include determining a pulse characteristic in response to a thermal property of a first tissue type and applying controlled pulsed electrical energy with the pulse characteristic from the energy delivery portion through the plurality of circuits.

Ultrasound transceiver and cooling thereof

An ultrasonic transceiver device for producing ultrasonic beams comprises a body vibratable at ultrasonic frequencies and an extensive surface for beam emanation, the device configured to produce an unfocused, or alternatively a focused, power beam for thermal tissue damage, the power beam being produced by vibration over the body of the transceiver and emanating from the extent of the surface, whereby the extensive surface becomes subject to convective cooling when immersed in a fluid by a chimney effect set up by said unfocused beam.

SYSTEMS FOR REMOVAL OF ATHEROSCLEROTIC PLAQUE OR THROMBUS AT A TREATMENT SITE

A system for removing plaque or thrombus from the vasculature and/or deployed medical devices is described. An embodiment can include a plaque reduction brush comprising at least one support adapted to allow the brush to be endoluminally deliverable via a delivery device to a treatment site; and a plurality of bristles extending from the at least one support and being arranged in a predetermined pattern along the at least one support, each of the plurality of bristles having a length, wherein one or more of the plurality of bristles has a bending portion along the length that is more easily bent than another portion of the length thereof, said bending portion facilitating bending of the one or more of the plurality of bristles between a compressed delivery configuration and an expanded use configuration. 1. A medical device including a plaque reduction brush said brush comprising:at least one support adapted to allow said brush to be endoluminally deliverable via a delivery device to a treatment site; anda plurality of bristles extending from the at least one support and being arranged in a predetermined pattern along the at least one support, each of the plurality of bristles having a length, wherein one or more of the plurality of bristles has a bending portion along the length that is more easily bent than another portion of the length thereof, said bending portion facilitating bending of the one or more of the plurality of bristles between a compressed delivery configuration and an expanded use configuration.2. The medical device of claim 1 , wherein the delivery device is a guidewire.3. The medical device of claim 1 , further comprising a secondary structure.4. The medical device of claim 3 , wherein the secondary structure is a bag.5. The medical device of claim 4 , wherein said bag substantially covers one or more of the plurality of bristles.6. The medical device of claim 5 , wherein said bristles at least partially protrude from the bag.7. The medical ...

Rotational Atherectomy Device with Fluid Inflatable Support Elements and Distal Protection Capability

A rotational atherectomy device for abrading a stenotic lesion from a vessel of a patient comprises a flexible drive shaft which extends towards a distal end of the device, a distal fluid inflatable support element located at a distal end of the drive shaft and an abrasive element mounted to the drive shaft proximal to and spaced away from the distal fluid inflatable support element. Both the abrasive element and the distal fluid inflatable support element are rotatable together with the drive shaft. 1. A method of using a rotational atherectomy device to remove a stenotic lesion from within a blood vessel , comprising:advancing a distal fluid inflatable counterweight located at a distal tip of a rotational atherectomy device to a position distal of a stenotic lesion in a blood vessel while an abrasive element of the rotational atherectomy device is positioned proximal of the stenotic lesion in the blood vessel and a proximal fluid inflatable counterweight is located proximal of the abrasive element, wherein the rotational atherectomy device comprises a rotatable, flexible drive shaft defining a fluid transport to the distal and proximal fluid inflatable counterweight, and wherein a distal end of the fluid transport lumen of the drive shaft is continuously closed by a fluid impermeable wall that crosses a longitudinal axis of the drive shaft such that fluid is prevented from exiting the fluid transport lumen in a longitudinal direction when fluid is moved through the fluid transport lumen;inflating the distal and proximal fluid inflatable counterweights of the rotational atherectomy device to a larger size after the distal fluid inflatable counterweight is advanced to the position distal of the stenotic lesion in the blood vessel;rotating the drive shaft of the rotational atherectomy device such that the abrasive element, the distal fluid inflatable counterweight, and the proximal counterweight rotate together with the drive shaft; andat least partially removing the ...

TOTAL OCCLUSION GUIDEWIRE DEVICE

A guidewire comprising a spreader or at least one centering device which may be used to open occluded vessels or other biological passages, especially chronic total occlusions. The guidewire may be used to either open the lumen or to center a boring device within the lumen, so that the chronic total occlusion can be crossed, and an interventional procedure can then be performed. 130-. (canceled)31. A guidewire for insertion into a lumen , said guidewire comprising:a flexible wire having an outer diameter, an inner diameter, a proximal end and a distal end;a generally solid, rotatable core wire having an outer diameter, a proximal end and a distal end, with said distal end of said rotatable core wire slidably inserted into said proximal end of said flexible wire;a guide tip attached to said distal end of said rotatable core wire, wherein said guide tip comprises a boring surface;a sheath, having an outer diameter and an inner diameter, a proximal end and a distal end, with said distal end of said sheath slidably insertable over said proximal end of said flexible wire, anda sheath, having an outer diameter and an inner diameter, a proximal end and a distal end, with said distal end of said sheath slidably insertable over said proximal end of said flexible wire;at least one centering device attached to said distal end of said flexible wire, said at least one centering device having a proximal end and a distal end, a smaller first diameter for insertion into said lumen, and a second larger diameter for centering said flexible wire in said lumen, said at least one centering device having said smaller first diameter when said sheath is slidably inserted over said flexible wire and said centering device, until said distal end of said sheath is substantially in contact with said guide tip, and said at least one centering device having said larger second diameter when said sheath is slidably retracted from said guide tip until said distal end of said sheath is no longer in ...

TOTAL OCCLUSION GUIDEWIRE DEVICE

A guidewire comprising a spreader or at least one centering device which may be used to open occluded vessels or other biological passages, especially chronic total occlusions. The guidewire may be used to either open the lumen or to center a boring device within the lumen, so that the chronic total occlusion can be crossed, and an interventional procedure can then be performed. 1. A guidewire for insertion into a lumen , said guidewire comprising:a flexible wire having an outer diameter, an inner diameter, a proximal end and a distal end;a generally solid core wire having an outer diameter, a proximal end and a distal end, said distal end of said core wire slidably insertable into said proximal end of said flexible wire; anda spreader attached to said distal end of said flexible wire, said spreader having a proximal end and a distal end, a smaller first diameter for insertion into said lumen, and a second larger diameter for expanding said lumen, said spreader maintaining said smaller first diameter when said core wire is slidably inserted through said flexible wire and said spreader, until said distal end of said core wire is substantially in contact with said distal end of said spreader, and said spreader having said larger second diameter when said spreader and said flexible wire are slidably advanced over said core wire until said distal end of said core wire is substantially in contact with said proximal end of said spreader.2. The guidewire according to claim 1 , wherein said flexible wire is made from super-elastic Nickel-Titanium alloy.3. The guidewire according to claim 1 , wherein said flexible wire incorporates segments made from polymeric material.4. The guidewire according to claim 1 , wherein said core wire has an outer diameter and an inner diameter.5. The guidewire according to claim 1 , wherein said spreader is made from super-elastic Nickel Titanium alloy.6. The guidewire according to claim 1 , wherein said flexible wire and said spreader are both ...

Specimen retrieval apparatus

A specimen retrieval apparatus includes an elongated tubular member defining a lumen therethrough and having an end effector disposed at a distal end thereof. The end effector includes a shaft defining a longitudinal axis, the shaft including a lumen extending therethrough. The lumen of the shaft communicates with the lumen of the elongated tubular member. A suction member is disposed at a distal end of the shaft in communication with the lumen of the shaft. The suction member is configured to retain a tissue specimen thereon. A sleeve is disposed about the shaft and is movable with respect to the shaft from a proximal to a distal position. A specimen retrieval bag is coupled to the sleeve. The bag is deployable from an undeployed position wherein the bag is disposed about the sleeve to an extended position wherein the bag is deployed over the tissue specimen.

INVERSIBLE TUBULAR MEMBER AND A GRIPPING DEVICE INCLUDING SUCH A MEMBER

This invention relates to a gripping device (), e.g. a surgical retrieval device. The device includes an inversible tubular member (), which is composed of interengaged stitches of resiliently flexible filamentary material and which is progressively transformable between an everted condition and an inverted condition. The device includes also actuation means () carrying the inversible tubular member and operable for effecting progressive inversion and eversion of the inversible tubular member. Through progressive inversion of the inversible tubular member, an object can be gripped thereby. 1. A gripping device comprising:an inversible tubular member which is substantially round in cross-section and progressively transformable between an everted condition and an inverted condition, with a transformation end being defined intermediate an everted length and an inverted length of the inversible tubular member during such transformation and with the inverted length and the everted length defining opposite to the transformation end respectively an inverted end and an everted end of the inversible tubular member,wherein inversible tubular member is composed of interengaged knitted stitches of resiliently flexible filamentary material; andactuation means carrying the inversible tubular member and operable for effecting progressive inversion and eversion of the inversible tubular member at the transformation end, with such inversion providing for gripping an object in the inversible tubular member.2. A gripping device as claimed in claim 1 , wherein the stitches are plaited stitches and are knitted to form circumferential rows arranged in a helix pattern.345-. (canceled)46. A gripping device as claimed in claim 1 , further comprising a membrane over at least a part of a surface of the inversible tubular member which is an outer surface in the everted condition.47. A gripping device as claimed in claim 1 , further comprising a membrane over at least a part of a surface of the ...

Floating, multi-lumen-catheter retractor system for a minimally-invasive, operative gastrointestinal treatment

Improved methods and devices for performing an endoscopic surgery are provided. Systems are taught for operatively treating gastrointestinal disorders endoscopically in a stable, yet dynamic operative environment, and in a minimally-invasive manner. Such systems include, for example, an endoscopic surgical suite. The surgical suite can have a reversibly-expandable retractor that expands to provide a stable, operative environment within a subject. The expansion can be asymmetric around a stabilizer subsystem to maximize space for a tool and an endoscope to each be maneuvered independently to visualize a target tissue and treat the target tissue from outside the patient in a minimally invasive manner.

Tissue Separating Catheter Assembly and Method

A tissue-separating catheter assembly comprises a rotatable shaft, having a distal shaft portion, and a tissue separator device extending along the shaft. The tissue separator device has a distal separator part at the distal shaft portion movable between a retracted state, towards the distal shaft portion, and an outwardly extending, operational state, away from the distal shaft portion. A pivot joint may be used to pivotally connect the distal separator end to the distal shaft portion. The distal shaft portion may comprise a distally-facing transition surface at a proximal end of the distal shaft portion. First and second energizable tissue separator elements may be used at the transition surface and the tip of the device, respectively. 119-. (canceled)20. A medical device comprising:a housing;a member extending from the housing and insertable into a tissue mass; andan assembly deployable relative to the member and capable of retaining a tissue sample severed from the tissue mass, the assembly having a retracted configuration and a deployed configuration, and the assembly comprising a dual-wall portion.21. The medical device of wherein the dual-wall portion comprises an outer wall portion and an inner wall portion.22. The medical device of wherein the dual-wall portion comprises an outer wall portion comprising a web.23. The medical device of wherein the dual-wall portion comprises an outer wall portion comprising silicone.24. The medical device of wherein the dual-wall portion comprises a braided element.25. The medical device of wherein the dual-wall portion comprises a braided element at least partially covered with a web.26. The medical device of wherein the assembly expands upon being deployed.27. The medical device of wherein the assembly expands as much as 300 percent.28. A medical device comprising:a housing;a member extending from the housing and insertable into a tissue mass; and a braided component; and', 'a coating covering at least a portion of the ...

IMMOBILIZING OBJECTS IN THE BODY

Stabilizing an object in the body of a patient involves the injection of a lower critical solution temperature (LCST) material or other flowable material into the body of the patient so that the material contacts the object. The LCST material or other flowable material then forms a gel in the body such that the object is contained at least partially within the gel and thereby stabilized by the gel such that the object can then be easily fragmented within the body and/or retrieved from the body. 120-. (canceled)21. A system for filling a cavity or space of a body comprising:a flowable material comprising a block copolymer having reverse thermal gelation properties, which remains in a liquid form below about a temperature inside the body of the patient and which forms a gel or solid about at and above the temperature inside the body of a patient; andan injection device for transferring the flowable material into the patient's body, whereby the flowable material is transferred in a liquid form from the injection device into a cavity or space within the patient's body and the flowable material changes into a gel or solid form in the cavity or space of the body.22. The system of claim 21 , wherein the injection device comprises an automated or human-operated syringe.23. The system of claim 21 , wherein the flowable material comprises a polyoxyethylene-polyoxypropylene block copolymer.24. The system of claim 21 , wherein the flowable material comprises a polyoxyethylene-polyoxypropylene block copolymer claim 21 , wherein the molecular weight of the block copolymer is between 5 claim 21 ,000 and 25 claim 21 ,000 or between 7 claim 21 ,000 and 15 claim 21 ,000.25. The system of claim 21 , wherein the flowable material comprises a biodegradable polyoxyethylene-polyoxypropylene block copolymer.26. The system of claim 21 , wherein the flowable material comprises copolymers of polyethylene oxide and polypropylene oxide.27. The system of claim 21 , wherein the flowable material ...

URETERAL CALCULUS SUCTION INSTRUMENT HAVING A SHAFT

A ureteral calculus suction instrument having a shaft through which a suction channel that can be connected to a suction device passes, wherein a collecting container having a distal opening and a proximal opening is arranged distally from the shaft, of which openings the proximal opening is connected to the distal end of the suction channel 1. A ureteral calculus suction instrument comprising:a shaft, through which a suction channel runs, said suction channel being connectable to a suction device; anda collecting container with a distal and proximal opening arranged distally from the shaft, of which the proximal opening is connected to the distal end of the suction channel.2. The ureteral calculus suction instrument according to claim 1 , wherein the shaft is formed as a hose.3. The ureteral calculus suction instrument according to claim 1 , wherein the collecting container is formed so as to be flexible.4. The ureteral calculus suction instrument according to claim 1 , wherein the distal opening of the collecting container is held by means of a support device.5. The ureteral calculus suction instrument according to claim 4 , wherein the support device is designed so as to be flexible.6. The ureteral calculus suction instrument according to claim 1 , wherein the collecting container is arranged such as to be closable in the region of its distal opening.7. The ureteral calculus suction instrument according to claim 1 , further comprising a filter arranged in the region of the proximal opening of the collecting container so as to block the access to the suction channel.8. The ureteral calculus suction instrument according to claim 1 , wherein one or more of the collecting container and the shaft are formed as one-off disposable articles.9. The ureteral calculus suction instrument according to claim 1 , wherein the ureteral calculus suction instrument is formed as a ureteroscope and the suction channel is arranged in the working channel of the ureteroscope. The ...

System and methods for locating and ablating arrhythomogenic tissues

The disclosure relates to a variety of systems and methods for sensing electrical events about a selected annulus region of the heart and for treating tissue in the selected annulus region. Wherein the system includes a first catheter that has an expandable member, an ablation element, and a lumen configured to allow a second catheter therethrough. The second catheter includes a distal section in a ring shape and a plurality of electrodes coupled around the ring. Optionally a second lumen can be included through the first catheter that allows for contrast media to be delivered to the distal end of the system. 120-. (canceled)21. A system for sensing electrical events about a selected intrabody annulus region and for treating tissue in the selected annulus region , comprising:a first catheter and a second catheter; a first handle assembly;', 'a first shaft having a first proximal end coupled to the first handle assembly, and a first distal end, the first shaft extending along a first axis;', 'a first lumen extending entirely through the first distal end of the first shaft along the first axis;', 'a second lumen extending entirely through the first distal end of the first shaft along the first axis;', 'an ablation element provided adjacent the first distal end of the first shaft;', 'an expandable member adjacent the first distal end; and', 'wherein the first lumen is adapted to receive the second catheter therethrough;, 'the first catheter comprising a second handle assembly;', 'a second shaft having a second proximal end coupled to the second handle assembly, and a second distal end, the second shaft of the second catheter extending along a second axis; and', 'a distal ring provided at the second distal end of the second shaft of the second catheter and oriented substantially perpendicular to the second axis of the second shaft of the second catheter, the distal ring having a plurality of discrete electrodes positioned about the distal ring of the second catheter., ' ...

Suction Lithotripsy Apparatus, Method and Kit

Medical devices, methods and kits useful in the disruption and removal of unwanted materials, such as calculi and other formations, from within body lumens are described. The disclosure describes particular embodiments and methods useful in the lithotriptic removal of stones from the salivary glands. 1. A method of removing an impediment in a body vessel comprising:introducing a medical device having a proximal end and a distal end into said body vessel such that the distal end of the medical device is disposed within said body vessel, the medical device defining a first lumen extending along a first axis and a second lumen in fluid communication with the first lumen and extending along a second axis disposed at an angle to the first axis, the first lumen having a proximal opening disposed at the proximal end of the medical device and a distal opening disposed at the distal end of the medical device;applying a suction force to the second lumen such that air from the environment external to said body vessel is pulled into the first lumen and through the second lumen;introducing a cannula having a proximal end and a distal end through the proximal opening of the first lumen such that the distal end of the cannula is disposed distal to the second lumen;introducing a wash fluid through the cannula such that the wash fluid exits the distal end of the cannula into said body vessel;continuing the step of introducing the wash fluid through the cannula until the wash fluid rises within the first lumen to a level sufficient for the suction force to pull the wash fluid into the second lumen; andafter the wash fluid achieves a level within the first lumen sufficient for the suction force to pull the wash fluid into the second lumen, continuing the step of applying a suction force to the second lumen such that the wash fluid is drawn through the second lumen.2. The method of claim 1 , wherein the medical device comprises:a pass-through fitting defining a main body and a side arm ...

Control Handles for Medical Devices

Various medical devices and methods are described herein. For example, various detachable control handle configurations for inclusion with a medical device are described. In another example, various probe configurations are described herein. Furthermore, various methods of treatment using a control handle are described. 1. A method of removing a stone disposed within a salivary duct having a salivary duct opening , the method comprising the steps of:positioning a control handle on a medical device having a proximal end and a distal end;releasably attaching the control handle to the medical device;inserting the distal end of the medical device through said salivary duct opening such that the distal end of the medical device is disposed distal to said salivary duct opening and in said salivary duct;navigating the distal end of the medical device through said salivary duct and towards a point of treatment;contacting the distal end of the medical device with said stone disposed in said salivary duct;performing treatment using the medical device; andwithdrawing the medical device from said salivary duct.2. The method of claim 1 , further comprising the step of inserting the distal end of the medical device into a lumen defined by a scope having a proximal end and a distal end such that the distal end of the medical device is disposed distal to the distal end of the scope claim 1 , the lumen of the scope extending between an opening at the proximal end of the scope and an opening at the distal end of the scope;wherein the step of inserting the distal end of the medical device through said salivary duct opening such that the distal end of the medical device is disposed distal to said salivary duct opening and in said salivary duct comprises inserting the distal end of the medical device and the distal end of the scope through said salivary duct opening such that the distal end of the medical device and the distal end of the scope are disposed past the said salivary duct ...

LUMEN RE-ENTRY SYSTEM AND METHOD

A lumen re-entry system includes a helically wound coil having an open proximal end and an open distal end and defining a longitudinal movement axis. The helically wound coil includes a relaxed distal segment that is relaxed relative to a proximal segment of the coil. A tip deflection wire is attached to the relaxed distal segment and coaxially disposed relative to the helically wound coil. Movement of the tip deflection wire in a proximal direction moves the lumen re-entry system from an advancement configuration in which the open distal end of the helically wound coil is substantially aligned with the longitudinal movement axis to a deflected configuration in which the open distal end of the helically wound coil is deflected relative to the longitudinal movement axis. The lumen re-entry system also includes a puncture wire slidably received within the helically wound coil and having a distal puncture tip. 1. A lumen re-entry system , comprising:a helically wound coil having an open proximal end and an open distal end and defining a longitudinal movement axis, wherein the helically wound coil includes a relaxed distal segment that is relaxed relative to a proximal segment of the helically wound coil;a tip deflection wire attached to the relaxed distal segment and coaxially disposed relative to the helically wound coil, wherein movement of the tip deflection wire in a proximal direction moves the lumen re-entry system from an advancement configuration in which the open distal end of the helically wound coil is substantially aligned with the longitudinal movement axis to a deflected configuration in which the open distal end of the helically wound coil is deflected relative to the longitudinal movement axis; anda puncture wire slidably received within the helically wound coil and having a distal puncture tip.2. The lumen re-entry system of claim 1 , further including a lubricious polymer coating surrounding the helically wound coil.3. The lumen re-entry system of ...

POLYP ENCAPSULATION SYSTEM AND METHOD

An endoscopic electrosurgical instrument is presented for encapsulating and resecting biologic tissue, such as a polyp, from an anatomical structure, such as a lumen. The instrument includes an encapsulation assembly which includes a snare coupled to an electrically non-conductive, shrinkable pouch in a drawstring-like configuration. The encapsulation assembly may be folded within the elongated cylindrical housing of the endoscopic instrument, positioned within the patient at the surgical site, and deployed for use. Once positioned over the polyp, the snare is tightened around the peduncle thereof, and the pouch is activated, thereby shrinking and encapsulating the polyp. The polyp may then be resected using conventional or electrosurgical techniques. The disclosed instrument may include surgical tools and/or electrosurgical electrodes for performing surgical procedures. The disclosed system may reduce the occurrence of undesirable arcing and may aid retrieval of resected tissue. 1. A method for encapsulating and resecting tissue from a patient , comprising the steps of:providing a polyp encapsulation device, including a wire loop snare having a shrinkable pouch including a closed end and an open end, wherein the open end includes a rolled edge defining a channel therein;positioning the polyp encapsulation device over the tissue to be encapsulated such that the shrinkable pouch envelops the tissue;tightening the wire loop snare around the tissue to be encapsulated;causing the open end and the closed end of the shrinkable pouch to shrink to encapsulate the tissue; andresecting the tissue.2. The method according to claim 1 , wherein the resecting step is performed by providing an electrosurgical signal to the wire loop snare.3. The method according to claim 1 , wherein the polyp encapsulation device further includes a surgical instrument having a retracted inactive position and an extended active position.4. The method according to claim 3 , wherein the resecting step ...

Device for Removing Tissue

A device for removing tissue by means of laparoscopy or thoracoscopy with an operating part and an optionally partially open hollow tube with a guide for operating a removing part. The removing part has the form of a zeppelin with one or more ribs. The removing part is provided on the upper side with longitudinal connecting elements. 115-. (canceled)16. A device for removing tissue by means of laparoscopy or thoracoscopy , the device comprising a hollow tube , an operating part with a handle retained by the hollow tube , and a removing part retained adjacent to an end of the hollow tube , wherein the hollow tube has a guide for operating the removing part and wherein the removing part has the form of a zeppelin with one or more ribs.17. The device of wherein the removing part can be closed in an airtight and watertight manner.18. The device of wherein the removing part has longitudinal connecting elements on the upper side thereof.19. The device of wherein the connecting elements are of plastic or metal.20. The device of wherein a first connecting element has thickened portions and a second connecting element has corresponding recesses.21. The device of wherein one or more ribs run in a substantially oval shape in a longitudinal direction of the removing part.22. The device of wherein the removing part further comprises a curved support.23. The device of wherein the removing part further comprises a venting reservoir.24. The device of wherein the handle of the operating part is connected to one or more of the ribs and wherein the one or more of the ribs pass into the hollow tube.25. The device of wherein the handle is connected to a closing mechanism of the connecting elements.26. The device of wherein the hollow tube is partially open on the underside thereof adjacent to the removing part.27. The device of wherein the hollow tube has an opening adjacent to the removing part for receiving the connecting elements of the removing part.28. The device of further ...

LAPAROSCOPIC SURGERY

The present invention relates to a method of laparoscopic surgery, and a kit which could be used in laparoscopic and robotic surgery. 1. A method of carrying out laparoscopic surgery to remove a specimen from the body of a patient , the method comprising the steps of:(i) providing a laparoscopic port which comprises tubular housing, an inflatable cuff around the distal end of the housing, an insufflation nozzle which is in fluid communication with the inflatable cuff, and a locking ring which can be passed over the proximal end of the housing and secured relative to the housing at different points along the length of the housing, and positioning the laparoscopic port through the skin of the patient so that the distal end of the laparoscopic port is in a body cavity and the proximal end of the laparoscopic port is outside the patient;(ii) providing a laparoscopic bag which has a top portion and a body portion, and only one opening which is in the top portion, and passing the laparoscopic bag through the laparoscopic port into the body cavity;(iii) placing the specimen into the body portion of laparoscopic bag;(iv) passing the top portion of the laparoscopic bag out through the skin of the patient, before or after removing the tubular housing of the laparoscopic port from the patient's body;(v) inserting the tubular housing of the laparoscopic port back inside the top portion of the laparoscopic bag so that the distal end of the housing is in the body cavity;(vi) inflating the inflatable cuff of the tubular housing using the insufflation nozzle, passing the locking ring over the proximal end of the housing, and locking the locking ring against the housing so that the top portion of the bag and the skin of the patient are gripped between the inflatable cuff and the locking ring;(vii) attaching the top portion of the laparoscopic bag to a sheath, which comprises a tube of medical-grade waterproof material;(viii) placing a mechanical morcellator through the sheath into ...

SYSTEMS, METHODS AND DEVICES FOR REMOVING OBSTRUCTIONS FROM A BLOOD VESSEL

Devices and methods for removing an obstruction from a blood vessel are described. The devices are deployed in a collapsed condition and are then expanded within the body. The devices are then manipulated to engage and remove the obstruction. 131-. (canceled)32. An obstruction removing device , comprising:an obstruction removing element which is movable from a collapsed position to an expanded position, the obstruction removing element having a wire which has a distal end coupled to an insertion element, the wire also having a proximal end which is slidable on the insertion element.33. The device of claim 32 , wherein:the insertion element has a stop, the stop preventing distal advancement of the proximal end of the wire.34. The device of claim 32 , wherein:the obstruction removing element has a proximal end which is slidable on the insertion element and a distal end which is pivotable on the insertion element.35. A method of removing an obstruction from a blood vessel claim 32 , comprising the steps of:providing an obstruction removing element which is movable from a collapsed position to an expanded position;positioning the obstruction removing element in a catheter with the obstruction removing element in the collapsed position;advancing the catheter through the obstruction;moving a distal end of the obstruction engaging element out of the catheter after the advancing step so that the obstruction removing element expands distal to the obstruction, wherein at least part of the obstruction engaging element proximal to the distal end expands within the obstruction; andremoving the obstruction by moving the obstruction engaging element after the advancing step.36. The method of claim 35 , wherein:the moving step is carried out with a proximal end of the obstruction engaging element expanding on a side of the obstruction opposite the distal end so that the obstruction is trapped between the expanded proximal and distal ends.37. The method of claim 35 , wherein:the ...

APPARATUS FOR ENTRAPPING AND EXTRACTING OBJECTS FROM BODY CAVITIES

A retrieval apparatus for entrapping and retaining an object located in a body for its extraction therefrom is described. The retrieval apparatus includes a snare and a snare control assembly. The snare has a proximal section and a distal section, and comprises a plurality of filaments extending from a proximal end of the proximal section towards the distal section, and then returning to the proximal end to form a plurality of loops. In the deployed state, the loops are interlaced to each other within the proximal section and are free and not interleaved within the distal section. Segments of the filaments of the distal section are bent with respect to segments of the filaments of the proximal section such that the retrieval snare in the contracted, state forms a hollow cavity extending from die distal section towards the proximal section. 1. A retrieval apparatus for entrapping and retaining an object located in a body for its extraction therefrom , the apparatus comprising a retrieval snare being changeable between its contracted state and a deployed state and formed by a plurality of filaments defining proximal and distal sections interconnected to each other;wherein the filaments extend from a proximal end of the proximal section towards the distal section, and then return to the proximal end to form a plurality of loops,wherein the loops are interlaced with each other only within the proximal section, while being free within the distal section in the deployed state,wherein the filaments forming sides of at least a part of the filament loops are bent at least one time to define a sequence of straight wire segments angled with respect to each other within the proximal and distal sections, and arcuate into arcs at a distal end of the distal section.2. The retrieval apparatus of claim 1 , wherein distal ends of the loops approach each other when the snare is in the contracted state claim 1 , thereby providing a hollow cavity at the distal section.3. The retrieval ...