Deployment handle for a pre-loaded iliac prosthesis delivery device

Patent metadata

Field	Value
Publication number	US-2018360633-A1
Application number	US-201816109157-A
Country	US
Kind code	A1
Filing date	Aug 22, 2018
Priority date	May 20, 2015
Publication date	Dec 20, 2018
Grant date	—

Abstract

A delivery system for delivering an endovascular prosthesis is disclosed. A handle assembly is disposed at the distal end of the delivery system. The handle assembly includes a main handle and a second handle disposed at least partially on the main handle and rotationally moveable relative to the main handle. A trigger wire release mechanism is operatively coupled to the second handle. A sheath is operatively coupled to the second handle, such that rotation of the second handle relative to the main handle retracts the sheath in a distal direction. Rotation of the handle also moves the trigger wire release mechanism from a first position to a second position to retract one or more trigger wires.

First claim

1 . A handle assembly for a prosthesis delivery device comprising:
a stationary main handle that is fixed relative to the delivery device comprising a proximal end and a distal end; a second handle disposed over a portion of the main handle and rotationally moveable relative to the stationary main handle; a sheath operatively connected to the second handle, the sheath extending proximally of the main handle, a trigger wire release mechanism operatively coupled to the second handle and comprising at least one trigger wire attached thereto and extending from the trigger wire release mechanism to engage an end of a prosthesis; wherein rotation of the second handle relative to the stationary main handle both retracts the sheath distally and causes the trigger wire release mechanism to move distally to pull and release the at least one trigger wire from the end the prosthesis.

2 . The handle assembly of claim 1 , wherein a first rotation of the second handle retracts the sheath, and a second subsequent rotation of the second handle causes the trigger wire release mechanism to move distally to pull and release the at least one trigger wire from the end of the prosthesis.

3 . The handle assembly of claim 1 , wherein the rotation of the second handle causes simultaneous retraction of the sheath and release of the at least one trigger wire from an end of the prosthesis.

4 . The handle assembly of claim 1 , wherein the at least one trigger wire comprises first and second trigger wires coupled to the trigger wire release mechanism, wherein the first trigger wire is coupled to a proximal end of the prosthesis and the second trigger wire is coupled to a distal end of the prosthesis.

5 . The handle assembly of claim 1 , further comprising a sheath connector operatively coupled to the sheath and the second handle.

6 . The handle assembly of claim 5 , wherein rotation of the second handle causes the sheath connector to move distally to retract the sheath.

7 . The handle assembly of claim 1 , wherein the stationary main handle comprises a gripping portion and a threaded surface.

8 . The handle assembly of claim 7 , wherein the second handle is disposed over and is operatively engaged with the threaded surface of the stationary main handle.

9 . The handle assembly of claim 1 wherein retraction of the sheath in a distal direction exposes at least a proximal end of the prosthesis.

10 . The handle assembly of claim 9 wherein the at least one trigger wire cannot be released from the prosthesis until the sheath has been retracted to expose at least the proximal end of the prosthesis.

11 . The handle assembly of claim 1 , wherein the trigger wire release mechanism comprises a ring that is longitudinally slideable relative to the main handle and wherein a distal end of the at least one trigger wire is attached to the ring.

12 . The handle assembly of claim 4 , wherein the trigger wire release mechanism comprises a ring that is longitudinally slideable relative to the main handle and wherein a distal end of the first and second trigger wires are attached to the ring.

13 . The handle assembly of claim 1 , wherein an inner surface of the second handle comprises internal threads that are engageable with the threaded surface of the main handle.

14 . A delivery system for delivering a prosthesis, the delivery system comprising:
a proximal end and a distal end; a prosthesis retention region at the proximal end of the delivery system; a prosthesis having a proximal end and a distal end, wherein the prosthesis is releasably coupled to the prosthesis retention region of the delivery system; a handle assembly disposed at the distal end of the delivery system, wherein the handle assembly comprises:
a stationary main handle comprising a proximal end and a distal end and sidewall extending there between to define a main handle housing interior;
a second handle disposed at least partially over the main handle and rotationally moveable relative to the stationary main handle;
a trigger wire release mechanism operatively coupled to the second handle and comprising at least one trigger wire attached thereto and extending from the trigger wire release mechanism to engage an end of the prosthesis, wherein rotation of the second handle relative to the stationary main handle causes the trigger wire release mechanism to move distally and pull the at least one trigger wire from engagement with the end of the prosthesis;
a sheath operatively connected to the second handle and extending proximally of the stationary main handle, the sheath having a first position wherein the prosthesis is covered by the sheath and a second position, and wherein rotation of the second handle relative to the stationary main handle retracts the sheath in a distal direction from the first position to the second position; and wherein distal movement of the trigger wire release mechanism is prevented when the sheath is in the first position.

15 . The delivery system of claim 14 , wherein a first rotation of the second handle retracts the sheath, and a second subsequent rotation of the second handle causes the trigger wire release mechanism to move distally to pull and release the at least one trigger wire from the end of the prosthesis.

16 . The delivery system of claim 14 , wherein the rotation of the second handle causes simultaneous retraction of the sheath and release of the at least one trigger wire from an end of the prosthesis.

17 . The handle assembly of claim 1 , wherein the at least one trigger wire comprises first and second trigger wires coupled to the trigger wire release mechanism, wherein the first trigger wire is coupled to the proximal end of the prosthesis and the second trigger wire is coupled to the distal end of the prosthesis.

18 . The delivery system of claim 1 , wherein the stationary main handle comprises a gripping portion and a threaded surface.

19 . The delivery system of claim 18 , wherein the second handle is disposed over and is operatively engaged with the threaded surface of the stationary main handle.

20 . The delivery system of claim 19 , wherein the trigger wire release mechanism comprises a ring that is longitudinally slideable relative to the main handle and wherein a distal end of the at least one trigger wire is attached to the ring.

21 . The handle assembly of claim 1 , wherein rotation of the handle is unidirectional.

22 . The delivery system of claim 14 , wherein rotation of the handle is unidirectional.

Assignees

• Cook Medical Technologies Llc

Inventors

• Vad Siddharth
• Teague James A

Classifications

• A61F2002/9511

  the retaining means being filaments or wires · CPC title

• A61F2/95

  Instruments specially adapted for placement or removal of stents or stent-grafts · CPC title

• A61F2002/9505

  having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument · CPC title

• A61F2/954 Primary

  for placing stents or stent-grafts in a bifurcation · CPC title

• A61F2/9517

  handle assemblies therefor · CPC title