Remotely removable covering and support

• US 6,315,792 B1
• Filed: 11/09/1999
• Issued: 11/13/2001
• Est. Priority Date: 06/15/1998
• Status: Expired due to Term

• Current Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Original Assignee: Gore Enterprise Holdings Incorporated
• Inventors: Vonesh, Michael, Armstrong, Joseph Robert
• Primary Examiner(s): Milano, Michael J.
• Assistant Examiner(s): Koh, Choon P.
• Application Number:
  US09/436,511
• Time in Patent Office: 735 Days
• Field of Search: 623/1.23, 623/1.13, 623/1.15, 623/1.12, 606/108, 66/81, 383/201, 383/202-206, 383/209
• US Class Current: 623/1.23
• CPC Class Codes: A61F 2/82 Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00
• CPC Class Codes: A61F 2/856 Single tubular stent with a side portal passage
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/954 for placing stents or stent-grafts in a bifurcation
• CPC Class Codes: A61F 2002/9505 having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument
• CPC Class Codes: A61F 2002/9511 the retaining means being filaments or wires
• CPC Class Codes: D04B 21/20 specially adapted for knitting articles of particular configuration
• CPC Class Codes: D04B 25/02 Tubular machines

Abstract

The invention creates a thin tubular multiple filament (film or fiber) structure that can hold high internal pressures. When desired, an extension of the filaments can be pulled in any direction to unfurl the structure. This device is useful for self expanding stent or stent graft delivery systems, balloon dilatation catheters, removable guide wire lumens for catheters, drug infusion or suction catheters, guide wire bundling casings, removable filters, removable wire insulation, removable packaging and other applications.

Claims

1. A removable cover mounted over a medical device comprising

a plurality of filaments;

the filaments being attached together to form a multi-filament interlocking structure covering the device;

a rip cord comprising ends of each of the filaments;

wherein the interlocking structure separates from the device with two of the plurality of filaments disconnecting from each other in an essentially straight line when tension is applied to the rip cord.

2. The cover of claim 1 wherein the rip cord comprises a multiple-filament interwoven rip cord.

3. The cover of claim 1 wherein the filaments are interwoven as a warp knit.

4. The cover of claim 1 wherein the rip cord removes all of the filaments from the device in an essentially straight line.

15. The cover of claim 1 wherein the cover comprises a variable density knit.

5. A removable cover mounted over a medical device comprising

a plurality of filaments;

the filaments being attached together to form a multi-filament interlocking structure covering the device;

a rip cord comprising ends of each of the filaments;

wherein the interlocking structure separates from the device with the rip cord removing all of the filaments from the device in an essentially straight line when tension is applied to the rip cord.

6. The cover of claim 5 wherein the rip cord comprises a multiple-filament interwoven rip cord.

7. The cover of claim 5 wherein the filaments are interwoven as a warp knit.

8. The cover of claim 5 wherein two of the plurality of filaments disconnect from each other in an essentially straight line when tension is applied to the rip cord.

14. The cover of claim 5 wherein the cover comprises a variable density knit.

9. A removable cover mounted over a medical device comprising

a plurality of filaments;

the filaments being attached together to form a multi-filaments interlocking structure covering the device;

ends of each of the filaments interwoven together to form a multi-filament rip cord;

wherein the interlocking structure separates from the device when tension is applied to the rip cord.

10. The removable cover of claim 9 wherein the interlocking structure separates from the device with the rip cord removing all of the filaments from the device in an essentially straight line when tension is applied to the rip cord.

11. The cover of claim 9 wherein the filaments are interwoven as a warp knit.

12. The cover of claim 9 wherein two of the plurality of filaments disconnect from each other in an essentially straight line when tension is applied to the rip cord.

13. The cover of claim 9 wherein the cover comprises a variable density knit.