Medical implant delivery system and related methods

Patent metadata

Field	Value
Publication number	US-10898228-B2
Application number	US-201615147106-A
Country	US
Kind code	B2
Filing date	May 5, 2016
Priority date	May 6, 2015
Publication date	Jan 26, 2021
Grant date	Jan 26, 2021

Abstract

An implant delivery device for introducing and positioning implants within patients may include a sheath member having a distal end, a proximal end, and a central longitudinal axis, the sheath member defining a lumen along the central longitudinal axis. The implant delivery device may additionally include an implant delivery shaft having a distal end and a proximal end, the implant delivery shaft disposed at least partially within the sheath member and an implant spreader assembly disposed at the distal end of the implant delivery shaft. In some embodiments, the implant delivery device may further include a cap disposed at the distal end of the sheath member, the cap obstructing at least a portion of an opening into the lumen of the sheath member.

First claim

What is claimed:

1. An implant delivery system comprising:
a sheath member having a distal end, a proximal end, and a central longitudinal axis, the sheath member defining a lumen along the central longitudinal axis;
an implant delivery shaft having a distal end and a proximal end, the implant delivery shaft disposed at least partially within the sheath member such that the implant delivery shaft is longitudinally moveable relative to the sheath member;
an implant spreader assembly secured at the distal end of the implant delivery shaft, wherein the implant delivery shaft is longitudinally moveable relative to the sheath member to advance the implant spreader assembly out of the lumen of the sheath member; and
a cap disposed at the distal end of the sheath member, the cap obstructing at least a portion of an opening into the lumen of the sheath member, wherein the cap comprises a plurality of petals; wherein each petal of the plurality of petals includes a recessed portion on an outer surface thereof;
wherein the cap is radially expandable from a first configuration to a second expanded configuration, wherein the cap is biased toward the first configuration when not subjected to an applied force.

2. The implant delivery system of claim 1 , wherein the cap comprises an even number of petals.

3. The implant delivery system of claim 1 , wherein each of the plurality of petals is disposed opposite another of the plurality of petals.

4. The implant delivery system of claim 1 , wherein the petals are configured to collapse together when inserted into tissue.

5. The implant delivery system of claim 4 , wherein, when collapsed together, the petals form a plug and prevent tissue from entering the lumen of the sheath member as the implant delivery system is advanced into the tissue.

6. The implant delivery system of claim 1 , wherein the petals curve inward toward the central longitudinal axis.

7. The implant delivery system of claim 1 , wherein at least a portion of the opening into the lumen is unobstructed by the cap.

8. The implant delivery system of claim 1 , further comprising a sealing member disposed on at least a portion of the implant delivery shaft that is disposed within the sheath member.

9. The implant delivery assembly of claim 1 , wherein the cap includes an opening at a distal end thereof when the cap is in the first configuration.

10. The implant delivery assembly of claim 1 , wherein the plurality of petals are biased toward the central longitudinal axis in the first configuration and are deflected radially outward in the second configuration.

11. An implant delivery system for delivering an implant to a target site, the system comprising:
a sheath member having a distal end, a proximal end, and a central longitudinal axis, the sheath member defining a lumen along the central longitudinal axis;
an implant delivery shaft having a distal end and a proximal end, the implant delivery shaft disposed at least partially within the sheath member such that the implant delivery shaft is longitudinally moveable relative to the sheath member, wherein the implant delivery shaft comprises a first section with a first diameter, a second section with a second diameter, and a third section with a third diameter, the second section located longitudinally between the first section and the third section, wherein the second diameter is less than both the first diameter and the third diameter; and
an implant spreader assembly secured at the distal end of the implant delivery shaft, wherein the implant delivery shaft is longitudinally moveable relative to the sheath member to advance the implant spreader assembly out of the lumen of the sheath member, the implant spreader assembly including four separate arms, wherein the implant spreader is expandable from a compact configuration when disposed within the lumen of the sheath member to an expanded configuration when advanced out of the lumen of the sheath member, wherein the implant spreader is elastically deformed to the compact configuration from the expanded configuration; wherein the implant spreader assembly includes a first post and a second post each extending longitudinally from the distal end of the implant delivery shaft, the first and second posts are spaced apart, defining a slot therebetween, wherein the four arms extend outward from the first and second posts.

12. The implant delivery system of claim 11 , further comprising a proximal movement lock engaged with the sheath member and disposed around the implant delivery shaft proximal of the third section of the implant delivery shaft, the proximal movement lock preventing the third section of the implant delivery shaft from being advanced proximal of the proximal movement lock.

13. The implant delivery system of claim 11 , further comprising a distal movement lock, the distal movement lock having a closed position and an open position, wherein in the closed position the distal movement lock is engaged with the implant delivery shaft and prevents the implant delivery shaft from being advanced distally, and wherein in the open position, the distal movement lock is disengaged from the implant delivery shaft and allows the implant delivery shaft to be advanced distally.

14. The implant delivery system of claim 13 , wherein when distal movement lock is engaged with the implant delivery shaft, the distal movement lock is engaged along the second section of the implant delivery shaft.

15. The implant delivery system of claim 11 , wherein the sheath member includes a plurality of deflectable petals located at the distal end of the sheath member.

16. The implant delivery system of claim 15 , wherein the plurality of petals are deflected radially outward away from the central longitudinal axis by the implant spreader as the implant spreader is advanced out of the lumen of the sheath member.

17. The implant delivery system of claim 11 , wherein first and second arms of the four arms extend in opposite sides of the first and second posts at a first location, and third and fourth arms of the four arms are attached to opposite sides of the second post at a second location, wherein the second location is spaced apart longitudinally from the first location.

18. The implant delivery system of claim 11 , wherein when in the compact configuration, the four arms curve around the first post and when in the expanded configuration, the four arms extend outwardly from the first post.

19. An implant delivery system for delivering an implant to a target site, the system comprising:
a sheath member having a distal end, a proximal end, and a central longitudinal axis, the sheath member defining a lumen along the central longitudinal axis;
an implant delivery shaft having a distal end and a proximal end, the implant delivery shaft disposed at least partially within the sheath member such that the implant delivery shaft is longitudinally moveable relative to the sheath member, wherein the implant delivery shaft comprises a first section with a first diameter, a second section with a second diameter, and a third section with a third diameter, the second section located longitudinally between the first section and the third section, wherein the second diameter is less than both the first diameter and the third diameter;
an implant spreader assembly secured at the distal end of the implant delivery shaft, wherein the implant delivery shaft is longitudinally moveable relative to the sheath member to advance the implant spreader assembly out of the lumen of the sheath member, wh

Assignees

• Rotation Medical Inc

Inventors

• Zenz-Olson Nathaniel
• Tran Nathaniel

Classifications

• A61B17/3468 Primary

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

• A61F2/0805

  Implements for inserting tendons or ligaments · CPC title

• A61B2017/3454

  Details of tips · CPC title

• A61B17/0218

  for minimally invasive surgery (A61B17/0281, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence) · CPC title

• A61F2/0063

  Implantable repair or support meshes, e.g. hernia meshes · CPC title