Removable essentially cylindrical implants

• US 7,252,680 B2
• Filed: 04/05/2002
• Issued: 08/07/2007
• Est. Priority Date: 04/18/2001
• Status: Expired due to Term

• Current Assignee: Merit Medical Systems, Inc.
• Original Assignee: Alveolus, Inc. (Merit Medical Systems, Inc.)
• Inventors: Freitag, Lutz
• Primary Examiner(s): Isabella; David J
• Application Number:
  US10/475,232
• Publication Number:
  US 20040116996A1
• Time in Patent Office: 1,950 Days
• Field of Search: 623/1.1, 623/1.11, 623/1.12, 623/1.22, 623/1.3, 623 149- 154, 623/11.11, 623 1313- 1315, 623 2364- 2369, 606/191, 606/194, 606/195, 606/198, 606/108
• US Class Current: 623/1.12
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 2017/2215 having an open distal end
• CPC Class Codes: A61F 2/88 the wire-like elements formed as helical or spiral coils forming a net-like or mesh-like structure A61F2/90
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2002/9511 the retaining means being filaments or wires
• CPC Class Codes: A61F 2002/9528 for retrieval of stents
• CPC Class Codes: A61F 2220/0025 Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2220/0058 soldered or brazed or welded

Abstract

The invention relates to removable, essentially cylindrical implants which are characterized in that they can be reduced in diameter and are wrapped once or several times at one or more levels by one or more elastic, thin wire-shaped structure(s) (2a, 2b) which include(s) a catch device (3a, 3b) at least on one end thereof.

Claims

1. A removable implant, comprising an implant body;

at least one flexible, thin wire-shaped structure having a portion slidably wrapped at least once about the implant body; and

a catch device provided on an end of the structure, said slidable portion of the structure configured to shorten as the catch device is pulled in the longitudinal direction;

wherein the implant body is reducible in diameter, at least partially by pulling the catch device in a longitudinal direction and shortening the slidable portion of the structure wrapped about the implant body.

2. The implant of claim 1, wherein the slidable portion of the structure is wrapped more than once about the implant body.

3. The implant of claim 1, wherein the slidable portion of the structure is wrapped several times about the implant body at one level only.

4. The implant of claim 1, wherein the slidable portion of the structure is wrapped several times about the implant body at several levels.

5. The implant of claim 1, wherein the implant body is made of a lattice or mesh of metal or plastic.

6. The implant of claim 1, wherein the implant body includes an open groove.

7. The implant of claim 1, wherein the structure is made of metal or plastic.

8. The implant of claim 1, wherein the structure has at least one end secured on or in the implant.

9. The implant of claim 1, wherein the catch device is configured as one member selected from the group consisting of thickened end, eyelet and loop.

10. The implant of claim 1, wherein the slidable portion of the structure is wrapped about the implant body at a single level only.

11. The implant of claim 1, wherein the slidable portion of the structure is wrapped about the implant body in a helical manner.

12. The implant of claim 1, wherein the structure extends between the implant body and an outer jacket.

13. The implant of claim 1, wherein the structure extends over an entire length of the implant body.

14. The implant of claim 1, wherein the structure extends only at an upper end of the implant body.

15. The implant of claim 1, wherein the implant can be captured through use of X-ray control without direct visualization.

16. The implant of claim 1, wherein the structure is secured to the implant body by a process selected from the group consisting of welding, entwining and knotting.