Retrieval mechanisms for implantable medical devices

• US 9,358,143 B2
• Filed: 07/22/2010
• Issued: 06/07/2016
• Est. Priority Date: 07/22/2009
• Status: Expired due to Fees

• Current Assignee: Apollo Endosurgery, Inc. (Boston Scientific Corporation)
• Original Assignee: Reshape Medical, Inc. (ReShape LifeSciences, Inc.)
• Inventors: Bouasaysy, Outhit, Ashby, Mark
• Primary Examiner(s): Woo, Julian W
• Assistant Examiner(s): David, Shaun L
• Application Number:
  US13/386,647
• Publication Number:
  US 20120271338A1
• Time in Patent Office: 2,147 Days
• US Class Current: 1/1
• CPC Class Codes: A61F 2250/0003 having an inflatable pocket filled with fluid, e.g. liquid or gas
• CPC Class Codes: A61F 5/003 inflatable
• CPC Class Codes: A61F 5/0036 Intragastrical devices

Abstract

Improved devices and components for securing and retrieving an implantable medical device including at least one of a flanged tip disposed at a distal end of the implantable medical device; a halo retrieval tip disposed at a distal end of the implantable medical device; an external leash disposed at least one of a proximal end, a midportion, and a distal end of the implantable medical device; and an internal leash disposed within an inflatable balloon of the implantable medical device. A method of retrieving an implantable medical device, comprising: securing a retrieval device to at least one of the components described herein; and removing the implantable medical device from a patient.

Claims

1. An implantable gastric device, comprising:

a shaft having a distal end and a proximal end;

a balloon coupled to the shaft;

a flanged tip disposed at one of the distal end or the proximal end of the shaft and positioned at an outer surface of the balloon, the flanged tip comprising a body connected to the shaft and a head attached to the body and spaced apart from the shaft, wherein—

the head includes a plurality of flanges extending radially outward from the body,

the flanges define a plurality of interruptions around at least a portion of a perimeter of the head, and

the flanges form an interrupted and atraumatic surface facing away from the balloon at an end of the flanged tip.

2. The implantable gastric device of claim 1,

wherein the shaft further comprises a lumen extending axially within the shaft from the proximal end to the distal end and fluidly connected to an interior of the balloon;

and

wherein the flanged tip further comprises a plug configured to seal the lumen at the distal end when the flanged tip is coupled to the shaft.

3. The implantable gastric device of claim 1,

wherein the shaft further comprises a guidewire channel extending axially within the shaft from the proximal end to the distal end;

and

wherein the flanged tip further comprises a guidewire hole configured to be aligned with the guidewire channel of the shaft when the flanged tip is coupled to the shaft.

4. The implantable gastric device of claim 1, wherein a recess is defined between the flanges, the body, and the balloon, wherein the recess provides a location for securing a retrieval device.

5. The implantable gastric device of claim 1, wherein provides a substantially smooth, convex surface.

6. The implantable gastric device of claim 5, wherein the convex surface is shaped such that imaginary extensions of the convex surface extending from the flanges as viewed in profile are aligned to tangentially graze the surface of the balloon while in an inflated state.

7. The implantable gastric device of claim 5, wherein the convex surface has a profile of a spherical cap formed by a sphere cut off by a plane other than at the center of the sphere.

8. The implantable gastric device of claim 7, wherein the body is substantially cylindrical.

9. The implantable gastric device of claim 8, wherein the radius of the spherical cap is larger than the radius of the body.