Curved tip hemodialysis catheter

A hemodialysis catheter for use within a vein of a patient includes a catheter body having a proximal end when positioned within and relative to the vein. The catheter body defines an arterial lumen and a venous lumen. The catheter body is shaped with a curved tip which has a distal end. The venous lumen is truncated at a location between the proximal end of the catheter body and the distal end of the curved tip. The truncated location of the venous lumen defines an out-flow opening. The distal end of the curved tip defines an in-flow opening which corresponds to the arterial lumen. The vein has a blood flow direction and the in-flow opening faces the blood flow direction.

Multi-split-tipped catheter

A multilumen catheter with an inflow or an outflow lumen having at least two tube extensions extending from the distal end of the catheter that open into the inflow or outflow lumen. The catheter is useful in the extracorporeal treatment of blood, such as hemodialysis, hemofiltration or apheresis. A device to selectively test each of the two tube extensions for occlusion.

HEMODIALYSIS CATHETER WITH THROMBUS BLOCKER

A hemodialysis catheter with a plurality of umbrella-like wire members covered with a film which works as a thrombus blocker and can easily and effectively remove the thrombus is disclosed. The hemodialysis catheter has a proximal lumen, the arterial lumen, and a distal lumen, the venous lumen. An elongate member is longitudinally put in either the proximal lumen or the distal lumen, or two elongate members in both lumens. A plurality of umbrella-like wire members are connected to the end of the elongate member. When the hemodialysis catheter is put in the vessel but not in use, the end of the lumen is capped off by the plurality of umbrella-like wire members covered with a film. When it is ready to use, the doctor can pull the elongate member which connects to the plurality of umbrella-like wire members out off the lumen inverting the plurality of umbrella-like wire members and clearing away any thrombus that has formed. 1. A hemodialysis catheter with thrombus blocker comprising:a first lumen having a distal end;a second lumen having a distal end and disposed adjacent to said first lumen;at least one elongate member longitudinally and removably disposed in one of said first or second lumens; anda plurality of umbrella-like wire members connected to the distal end of said elongate member, said umbrella-like wire members configured to inhibit or remove thrombus formation.2. A hemodialysis catheter with thrombus blocker as claim 1 , wherein the elongate member is longitudinally placed in said first lumen.3. A hemodialysis catheter with thrombus blocker as claim 1 , wherein the elongate member is longitudinally placed in said second lumen.4. A hemodialysis catheter with thrombus blocker as claim 2 , wherein said a plurality of umbrella-like wire members cover the distal end of said first lumen while said elongate member is locked into place.5. A hemodialysis catheter with thrombus blocker as claim 3 , wherein said a plurality of umbrella-like wire members cover the ...

DELIVERY OF AN EMBOLIZATION COIL WITH AN ATTACHER

An occluding device apparatus includes an embolization coil with a distal end and a proximal end with an opening and an attacher that is threaded through the opening at the proximal end of the embolization coil. The apparatus further comprises a delivery kit for delivery of the embolization coil in a body cavity. The kit comprises a guide catheter for percutaneous introduction of the embolization coil and an inner catheter slidably disposed within the guide catheter during insertion. The inner catheter comprises a proximal end and a distal end. The inner catheter further includes a hub disposed adjacent the proximal end. The kit further comprises a guide wire slidably disposed within the inner catheter. The guide wire is configured to provide a path during insertion thereof within a body cavity. The kit further comprises a pushwire to advance the embolization coil through the inner catheter. 1. An occluding device apparatus comprising:an embolization coil with a distal end and a proximal end, the proximal end having an opening; and an inner catheter slidably disposed within the guide catheter during insertion, the inner catheter comprising a proximal end and a distal end, the inner catheter including a hub disposed adjacent the proximal end;', 'a guide wire slidably disposed within the inner catheter, the guide wire configured to provide a path during insertion thereof within a body cavity; and', 'a pushwire to advance the embolization coil through the inner catheter., 'a guide catheter for percutaneous introduction of the embolization coil;'}, 'a delivery kit for delivery of the embolization coil in a body cavity, the kit comprising, 'an attacher threaded through the opening at the proximal end of the embolization coil.'}2. The occluding device of wherein the attacher is a monofilament.3. The occluding device of further comprising a cap attached to the proximal end of the embolization coil claim 1 , the opening extending through the cap laterally relative a ...

MULTI-SPLIT-TIPPED CATHETER

A multilumen catheter with an inflow or an outflow lumen having at least two tube extensions extending from the distal end of the catheter that open into the inflow or outflow lumen. A device to selectively test each of the two tube extensions for occlusion. 1. A multilumen catheter , comprising:an elongated flexible tubular member having a proximal end portion and a distal end portion, the elongated flexible tubular member also having at least one septum forming at least one aspiration lumen and at least one infusion lumen extending between the proximal and distal end portions;a first distal end tube and a second distal end tube attached to the distal end portion of the elongated flexible tubular member, the first and second distal end tubes having open proximal and distal ends and in fluid communication with said aspiration lumen;a third distal end tube attached to the distal end portion of the elongated flexible tubular member, the third distal end tube having open proximal and distal ends and in fluid communication with said infusion lumen;and wherein the distal ends of said first, second, and third distal end tubes are not attached to each other and the distal ends are thereby capable of independent movement.2. The multilumen catheter of claim 1 , where the first distal end tube has a first longitudinal length between its proximal and distal ends claim 1 , the second distal end tube has a second longitudinal length between its proximal and distal ends claim 1 , and the third distal end tube has a third longitudinal length between its proximal and distal ends claim 1 , and where both the first and the second longitudinal lengths are less than the third longitudinal length.3. The multilumen catheter of claim 2 , where the first longitudinal length is less than the second longitudinal length.4. The multilumen catheter of claim 2 , where the second longitudinal length is less than the first longitudinal length.5. The multilumen catheter of claim 2 , where said at ...

BULGED CATHETER TIP

Among other things, a catheter assembly including a main catheter portion and a deformable tip portion is disclosed. Embodiments of the catheter have a lumen extending between distal and proximal ends. The deformable portion is configured to transform from a compact shape to an expanded shape when it is inserted into a patient. The cross-sectional sizes and shapes of the deformable portion and catheter are similar or about the same; therefore, the compact shape mimics a traditional distal tip of a catheter during insertion into a patient. The physician can use a standard catheter insertion technique. As the deformable portion warms to the patient's body temperature, the deformable portion bulges to the expanded shape. The expanded shape helps attain laminar flow and increases the flow rate through the catheter. To activate the deformable portion to return to the compact shape, cold liquid is passed through the deformable portion. 1. A catheter assembly , comprising:a catheter having a distal end opposite a proximal end and a lumen extending between the distal end and the proximal end; anda deformable portion having a proximal end, a distal end, a mid-section between them and a lumen, said proximal end of said deformable portion attached to the distal end of the catheter so that said lumen of said catheter and said lumen of said deformable portion communicate with each other at a common diameter, said distal end of said deformable portion having an opening to said lumen, the deformable portion having a compact shape at a first temperature and an expanded shape at a second temperature, wherein the second temperature is greater than the first temperature,and wherein in said expanded shape said mid-section has a diameter larger than said distal end of said deformable portion and said proximal end of said deformable portion, so that when said deformable portion is within a body, said expanded mid-section has a convex external surface that maintains at least part of said ...

CATHETER TIP CUTTING TOOL

A cutting tool is provided for cutting the end of a catheter to provide custom length catheters. The cutting tool has a cutting member that moves within the cutting passageway in the housing. The catheter is positioned within a catheter passageway in the housing. The cutting passageway transacts the catheter passageway so that a blade on the cutting member crosses the catheter passageway and cuts through the width of the catheter to form a cut end on the catheter. 1. A cutting tool for cutting a tip of a catheter , comprising:a housing comprising a first passageway sized to accept a catheter body and a second passageway sized to accept a cutting member;said second passageway transecting said first passageway, and said cutting member comprising an arc-shaped blade, said blade being at least as wide as said catheter body;wherein said catheter body is extendable through said first passageway to a position where a desired distal end of said catheter body is aligned with said second passageway, said cutting member being pushable through said second passageway until said blade crosses said first passageway, said blade thereby cutting through said catheter body to form an arc-shaped distal end on said catheter body.2. The cutting tool according to claim 1 , wherein said blade is convex-shaped claim 1 , said distal end of said catheter body formed by said blade thereby being convex-shaped.3. The cutting tool according to claim 2 , further comprising a guide attached to said cutting member claim 2 , said guide restraining said cutting member from rotating within said second passageway.4. The cutting tool according to claim 3 , wherein said second passageway and said cutting member comprise a round cross-section.5. The cutting tool according to claim 4 , wherein said cutting member comprises a hollow cylindrical body.6. The cutting tool according to claim 5 , wherein a first side of said hollow cylindrical body is disposed in the direction of a proximal end of said catheter ...

METHOD OF INTRODUCING A CATHETER

A system and method for vessel catheterization is provided, having an introducer sheath and a catheter. The introducer sheath can include a handle and a sheath body extending from the handle. An access lumen is provided in the introducer sheath, and can include a tapered portion that is sized to receive a tapered outer surface of the catheter. The catheter may be a central venous catheter, such as a peripherally inserted central catheter, including a hub, a catheter body with at least one lumen extending distally from the hub, and at least one tube extending proximally from the hub. The introducer sheath is preferably a splittable sheath. The catheter can be inserted into the access lumen, and translated until confronting surfaces of the tapered outer surface of the catheter body and the tapered portion of the introducer sheath contact one another. This arrangement can inhibit buckling and/or kinking of the catheter during insertion, and improve initial catheter tip positioning. 1. A method of vessel catherization comprising:providing a catheter assembly comprising a catheter body and a hub assembly, said catheter body having one or more lumens extending longitudinally therethrough and extending distally from said hub assembly, said catheter body comprising a tapered outer surface adjacent said hub assembly;providing an introducer sheath comprising a handle and a sheath body extending from said handle, said introducer sheath having an access lumen extending through said sheath body and said handle, wherein said access lumen has a tapered portion sized to receive said tapered outer surface of said catheter body;creating an entry opening through a vessel with a needle;introducing said introducer sheath through said vessel entry opening to access said vessel;introducing said catheter body of said catheter assembly into said vessel through said access lumen of said introducer sheath; andtranslating said catheter body through said vessel until confronting surfaces of ...

CURVED TIP HEMODIALYSIS CATHETER

A hemodialysis catheter for use within a vein of a patient includes a catheter body having a proximal end when positioned within and relative to the vein. The catheter body defines an arterial lumen and a venous lumen. The catheter body is shaped with a curved tip which has a distal end. The venous lumen is truncated at a location between the proximal end of the catheter body and the distal end of the curved tip. The truncated location of the venous lumen defines an out-flow opening. The distal end of the curved tip defines an in-flow opening which corresponds to the arterial lumen. The vein has a blood flow direction and the in-flow opening faces the blood flow direction. 2. The hemodialysis catheter of wherein said curved tip has a curvature of approximately 180 degrees.3. The hemodialysis catheter of wherein said venous lumen is constructed and arranged for the out-flow of blood in a venous flow direction claim 1 , said venous flow direction being substantially the same as said blood flow direction.4. The hemodialysis catheter of wherein said curved tip includes an upstream section claim 1 , a downstream section and a curved section therebetween.5. The hemodialysis catheter of wherein said curved tip defines an open space which is between two (2) sections of said curved tip such that a lateral width of said curved tip includes the lateral width of each section and some portion of said open space.6. The hemodialysis catheter of wherein said distal end is free of any sideports claim 1 , adjacent said in-flow opening.7. The hemodialysis catheter of wherein said in-flow opening is constructed and arranged to suck in blood in a first flow direction and said out-flow opening is constructed and arranged to reintroduce blood back into the vein in a second flow direction wherein said first flow direction and said second flow direction are substantially the same.8. A hemodialysis catheter system comprising the hemodialysis catheter of in combination with connection tubing ...

Locating device

Method For Anchoring Occlusion Plug

A method for occluding a body vessel in a patient to block or reduce blood flow therethrough includes puncturing a blood vessel wall at a proximal vessel entry site with a hollow needle and extending the needle through the proximal entry site into the vessel lumen. The needle is extended through the vessel lumen and extended through the vessel wall at a distal vessel exit site into the extravascular space surrounding the distal vessel exit site. An expandable biocompatible material, such as expandable extracellular matrix (ECM) material, is then ejected though the distal end of the needle into the extravascular space. Then, while continuing to eject the expandable biocompatible plug material, the distal end of the needle is retracted back through the distal vessel exit site into the vessel lumen, such that the plug material continuously extends between the extravascular space surrounding the distal vessel exit site into the vessel lumen. When the plug material is delivered into the lumen of the vessel, the plug material expands, anchoring the plug material to the vessel wall, whereby the plug material forms an occluding plug in the vessel lumen blocking or reducing blood flow therethrough.

Endobronchial blocking device having a replaceable snare

Shaping device

An elongate element, in particular a catheter, has a curved shape imparted to its end by a device comprising razor blades which are mounted on a pivotal linkage mechanism. Upon pressing actuator members against the restoring force of spring elements, the razor blades are constrained by the pivotal linkage mechanism to follow a desired curved path.

Hemodialysis catheter with thrombus blocker

A hemodialysis catheter with a plurality of umbrella-like wire members covered with a film which works as a thrombus blocker and can easily and effectively remove the thrombus is disclosed. The hemodialysis catheter has a proximal lumen, the arterial lumen, and a distal lumen, the venous lumen. An elongate member is longitudinally put in either the proximal lumen or the distal lumen, or two elongate members in both lumens. A plurality of umbrella-like wire members are connected to the end of the elongate member. When the hemodialysis catheter is put in the vessel but not in use, the end of the lumen is capped off by the plurality of umbrella-like wire members covered with a film. When it is ready to use, the doctor can pull the elongate member which connects to the plurality of umbrella-like wire members out off the lumen inverting the plurality of umbrella-like wire members and clearing away any thrombus that has formed.