Introducer for introduction of a prosthesis into a lumen of a patient

Patent metadata

Field	Value
Publication number	US-2018360491-A1
Application number	US-201715626295-A
Country	US
Kind code	A1
Filing date	Jun 19, 2017
Priority date	Jun 19, 2017
Publication date	Dec 20, 2018
Grant date	—

Abstract

An introducer and a delivery assembly for introduction of a prosthesis into a bodily lumen is disclosed. The introducer comprises: a sheath; a housing mounted to a distal end of the sheath, the housing having a passage there-through adapted to receive a delivery assembly; a port for introducing flushing fluid, the port communicating with the passage; and a liquid absorbing seal for sealably receiving the delivery assembly, the liquid absorbing seal disposed within the housing distally of the port. The delivery assembly comprises: a guide wire catheter; a tip mounted to a proximal end of the guide wire catheter; a distal delivery member mounted around the guide wire catheter and located distal of the tip; and a prosthesis receiving portion between the tip and the distal delivery member. The delivery assembly is slidably mounted through the introducer. Absorption of fluid swells the liquid absorbing seal.

First claim

1 . An introducer for introduction of a prosthesis into a lumen of a patient, the introducer comprising:
a sheath having a proximal end and a distal end; a housing mounted to the distal end of the sheath, the housing having a passage there-through adapted to receive a delivery assembly; a port for introducing flushing fluid, the port communicating with the passage; and a liquid absorbing seal for sealably receiving the delivery assembly, the liquid absorbing seal disposed within the housing distally of the port, whereby introduction of a flushing fluid through the port into the passage results in absorption of a portion of the flushing fluid into the liquid absorbing seal.

2 . The introducer of claim 1 wherein the liquid absorbing seal comprises hydrogel.

3 . The introducer of claim 2 wherein the hydrogel comprises a lubricious polymer.

4 . The introducer of claim 2 wherein the hydrogel is a hydrophilic thermoplastic polyurethane elastomer.

5 . The introducer of claim 1 wherein the housing includes a cap, the cap retaining the liquid absorbing seal.

6 . The introducer of claim 1 comprising a compression assembly, the compression assembly operable to compress the liquid absorbing seal.

7 . The introducer of claim 6 wherein the compression assembly comprises an actuator and a compression segment.

8 . The introducer of claim 7 wherein the actuator comprises a rotatable body, the rotatable body threadably connected to the housing, wherein the rotation of the rotatable body pushes the compression segment against the liquid absorbing seal thereby compressing the liquid absorbing seal.

9 . The introducer of claim 8 wherein the compression segment is a separate component to the rotatable body and wherein the compression segment and the rotatable body are mutually arranged and constructed to allow relative rotation.

10 . The introducer of claim 1 comprising a delivery assembly, the delivery assembly comprising:
a guide wire catheter;
a tip mounted to a proximal end of the guide wire catheter;
a distal delivery member mounted around the guide wire catheter and located distal of the tip; and
a prosthesis receiving portion between the tip and the distal delivery,
wherein the delivery assembly is slidably mounted through the introducer.

11 . The introducer of claim 10 wherein in a first condition the liquid absorbing seal engages an external surface of the distal delivery member, wherein in a second condition the liquid absorbing seal engages an external surface of a guide wire,
whereby in at least the second condition, absorption of fluid swells the liquid absorbing seal.

12 . The introducer of claim 11 wherein the liquid absorbing seal comprises hydrogel.

13 . The introducer of claim 12 wherein the hydrogel comprises a lubricious polymer.

14 . The introducer of claim 12 wherein the hydrogel is a hydrophilic thermoplastic polyurethane elastomer.

15 . The introducer of claim 10 wherein the housing includes a cap, the cap retaining the liquid absorbing seal.

16 . The introducer of claim 10 comprising a compression assembly, the compression assembly operable to compress the liquid absorbing seal.

17 . The introducer of claim 16 wherein the compression assembly comprises an actuator and a compression segment.

18 . The introducer of claim 17 wherein the actuator comprises a rotatable body, the rotatable body threadably connected to the housing, wherein the rotation of the rotatable body pushes the compression segment against the liquid absorbing seal thereby compressing the liquid absorbing seal.

19 . The introducer of claim 17 wherein the compression segment is a separate component to the rotatable body and wherein the compression segment and the rotatable body are mutually arranged and constructed to allow relative rotation.

20 . An introducer and a delivery assembly for introduction of a prosthesis into a lumen of a patient, the introducer comprising:
a sheath having a proximal end and a distal end; a housing mounted to the distal end of the sheath, the housing having a passage there-through adapted to receive a delivery assembly; a port for introducing flushing fluid, the port communicating with the passage; and a liquid absorbing seal for sealably receiving the delivery assembly, the liquid absorbing seal comprising a hydrophilic thermoplastic polyurethane elastomer, the liquid absorbing seal disposed within the housing distally of the port, and the delivery assembly comprising:
a guide wire catheter;
a tip mounted to a proximal end of the guide wire catheter;
a distal delivery member mounted around the guide wire catheter and located distal of the tip; and
a prosthesis receiving portion between the tip and the distal delivery member
wherein the delivery assembly is slidably mounted through the introducer, and
wherein in a first condition the liquid absorbing seal engages an external surface of the distal delivery member, and
wherein in a second condition the liquid absorbing seal engages an external surface of a guide wire,
whereby in at least the second condition, absorption of fluid swells the liquid absorbing seal.

Assignees

• Cook Medical Technologies Llc

Inventors

• Collins James

Classifications

• A61B2017/3464

  with means acting on inner surface of valve or seal for expanding or protecting, e.g. inner pivoting fingers · CPC title

• A61M2025/0062

  having features to improve the sliding of one part within another by using lubricants or surfaces with low friction · CPC title

• A61M25/0102

  Insertion or introduction using an inner stiffening member, e.g. stylet or push-rod · CPC title

• A61B17/3468 Primary

  for implanting or removing devices, e.g. prostheses, implants, seeds, wires (devices for implanting seeds A61M37/0069) · CPC title

• A61B17/3462

  with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals (expandable cannulas A61B17/3417) · CPC title