LOADING TOOL FOR CAPTURING STENT POINTS

• US 20140277336A1
• Filed: 03/14/2013
• Published: 09/18/2014
• Est. Priority Date: 03/14/2013
• Status: Active Grant

• Current Assignee: Cook Medical Incorporated (Cook Group Incorporated)
• Original Assignee: Cook Medical Incorporated (Cook Group Incorporated)
• Inventors: Vad, Siddharth, Hadley, Rick
• Granted Patent: US 9,351,860 B2
• Time in Patent Office: Days
• US Class Current: 623/1.11
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/9522 Means for mounting a stent or stent-graft onto or into a placement instrument
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• CPC Class Codes: A61F 2002/9665 with additional retaining means

Abstract

The present embodiments provide systems and methods for loading a stent or stent graft onto an introducer for intraluminal deployment. In one example, a system includes an endoluminal prosthesis introducer comprising a stent retaining member engageable with a stent end. The system may also include a loading tool for engaging the stent end on the stent retaining member. The loading tool may include a loading body having a passage extending from a first end to a second end and a slot that extends through the tubular loading body from the passage to an outer surface of the tubular loading body, and the slot may further extend from the second end toward the first end. The stent retaining member may be disposed at least partially within the passage of the loading body, and the slot of the loading body may be rotatable around the stent retaining member.

Claims

1. A system comprising:

an endoluminal prosthesis introducer comprising a stent retaining member engageable with a stent end in a compressed configuration; and

a loading tool to facilitate engaging the stent end on the stent retaining member comprising a loading body having a passage extending from a first end to a second end and a slot that extends through the loading body from the passage to an outer surface of the tubular loading body, the slot extending from the second end toward the first end,

wherein the stent retaining member is disposed at least partially within the passage of the loading body, and the slot of the loading body is rotatable around the stent retaining member.

2. The system of claim 1, wherein the loading tool comprises a hub rotatably attached to the first end of the loading body.

3. The system of claim 2, wherein the hub comprises a coupling mechanism that is engageable with the introducer to fix the hub in place relative to the introducer.

4. The system of claim 3, wherein the hub comprises a hub passage extending from a first end to a second end of the hub, and the coupling mechanism comprises a screw that is extendable through the hub from an outer surface of the hub and into the hub passage to engage the introducer.

5. The system of claim 1, wherein the introducer comprises a proximal tip positioned proximal of the engaging member, and the proximal tip is disposed at least partially within the passage of the loading body.

6. The system of claim 5, wherein the stent retaining member is longitudinally movable relative to the proximal tip within the loading body between a releasing configuration and a retaining configuration.

7. The system of claim 6, wherein the introducer comprises an inner cannula, the proximal tip is attached to a proximal end of the inner cannula, and the stent retaining member is disposed circumferentially around the inner cannula.

8. The system of claim 1, wherein the stent retaining member comprises a plurality of stent engaging members disposed circumferentially about a longitudinal axis of the introducer.

9. The system of claim 8, wherein the loading body is sequentially rotatable so that the slot is movable into radial alignment with each of the stent engaging members.

10. The system of claim 9, wherein, when the slot is radially aligned with one of the plurality of stent engaging members, an apex of the stent end is movable radially inward through the slot and engageable with the engaging member.

11. The system of claim 8, wherein the stent engaging members comprise fins extending outward away from the axis of the introducer.

12. The system of claim 11, wherein the stent end comprises a plurality of apices having an aperture engageable with the fins.

13. The system of claim 8, wherein the plurality of stent engaging members comprises at least eight stent engaging members, and each is engageable with an apex of the stent end.

14. A method of loading a stent end onto an endoluminal prosthesis introducer, the method comprising:

providing an endoluminal prosthesis introducer comprising a stent retaining member engageable with a stent end in a compressed configuration;

positioning a loading tool comprising a loading body having a passage extending from a first end to a second end such that the engaging member is disposed at least partially within the passage of the loading body, the loading body comprising a slot that extends through the tubular loading body from the passage to an outer surface of the tubular loading body, and the slot extending from the second end toward the first end; and

rotating the slot of the loading body around the stent retaining member.

15. The method of claim 14, further comprising removably fixing a hub to the introducer, wherein the hub is rotatably attached to the first end of the loading body.

16. The method of claim 14, wherein the stent retaining member comprises a plurality of stent engaging members disposed circumferentially about a longitudinal axis of the introducer.

17. The method of claim 14, wherein the stent end comprises a plurality of apices, and the method further comprises engaging a first apex of the plurality of apices with a first engaging member of the plurality of stent engaging members when the slot is radially aligned with the first engaging member.

18. The method of claim 17, further comprise rotating the slot to misalign the slot with the first engaging member to retain the first apex between the loading body and the first engaging member.

19. The method of claim 18, further comprises engaging a second apex of the plurality of apices with a second engaging member of the plurality of stent engaging members when the slot is radially aligned with the second engaging member.

20. A loading tool to facilitate engaging a stent end on a stent retaining member comprising:

a loading body having a passage extending from a first end to a second end and a slot that extends through the loading body from the passage to an outer surface of the tubular loading body, the slot extending from the second end toward the first end,

wherein a stent retaining member is positionable at least partially within the passage of the loading body, and the slot of the loading body is rotatable around the stent retaining member.