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EP0732087A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Protective intraluminal sheath

Assignee: Boston Scientific Scimed Inc
•
Filing: 1996-03-14
•
Granted: —
•
Expires: 2016-03-14
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Abstract

Abstract A sheath holds a device against a balloon catheter for delivery in the lumen of a patient. The device can be a stent and graft combination. The stent is kept properly centered over the balloon catheter by the sheath as the graft is placed in a blood vessel. The smooth outer surface of the sheath protects the vessel wall from the rough surface of the stent. A notch is formed in the end of the sheath where the free end of a strand of thread protrudes from the sheath. The sheath is removed from the graft by pulling on the free end of the strand otherwise located distally from the outer surface of the sheath. The strand cuts through and splits open the sheath as a result of the force applied on the free end of the strand. The other end of the strand is attached to a reinforced collar at the other end of the sheath. The strand does not cut through the collar. After reaching the collar, the proximal force applied on the strand now pulls the split sheath from the stent-and-graft combination without disturbing the placement of the stent over the balloon delivery catheter.

Inventors

  • 👤 James M. Cannon
  • 👤 Scott C. Anderson

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-23 13:20
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/95; A61F2/962; A61F2/97; A61F2/958; A61F2002/9583; A61M; A61M25/00; A61M25/10; A61M2025/1043; A61M2025/1081

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 117 words
A sheath (10) for holding a device against a delivery catheter (60), said sheath comprising: a sheath body having a first surface, a first sheath end and a second sheath end; a collar (20) located at said second sheath end; and a strand (30) having a first strand end located away from said first surface of said sheath body from said collar to said first sheath end, and a free strand end (34) extending from said first sheath end, wherein applying a proximal force on said free strand end causes said first strand end to cut through said sheath body and form a split, and said collar is resistant to being cut by said first strand end.
Claim 2
Dependent Claim 21 words
The sheath of claim 1, wherein said first sheath end includes a notch (15) adjacent to said free strand end (34).
Claim 3
Dependent Claim 19 words
The sheath of claim 1, wherein said sheath body includes a perforation to encourage the propagation of the split.
Claim 4
Dependent Claim 23 words
The sheath of claim 1, wherein said collar (20) includes two layers of said sheath body doubled back at said second sheath end.
Claim 5
Dependent Claim 17 words
The sheath of claim 1, wherein said free strand end (34) is disposed alongside of the catheter.
Claim 6
Dependent Claim 16 words
The sheath of claim 1, wherein said first strand end is embedded in said sheath body.
Claim 7
Dependent Claim 17 words
The sheath of claim 1, wherein said collar (20) includes a coaxial tube (22) surrounding the catheter.
Claim 8
Dependent Claim 13 words
The sheath of claim 7, wherein said coaxial tube includes a cleft (24).
Claim 9
Dependent Claim 14 words
The sheath of claim 1, wherein the implant device is a stent-and-graft combination (56,52).
Claim 10
Dependent Claim 19 words
The sheath of claim 7, wherein said first sheath end covers the stent-and-graft (56,52) combination and the delivery catheter.
Claim 11
Dependent Claim 21 words
The sheath of claim 1, wherein the implant device is an intraluminal stent, and said first sheath end covers the stent.
Claim 12
Dependent Claim 64 words
The sheath of claim 1, further comprising a second strand (130) having a second strand end located from said collar to said first sheath end, and a second free strand end extending from said first sheath end, wherein applying a proximal force on said second free strand end causes said second strand end to cut through said sheath body to form a second split.

References Cited (Backward Citations)

WO1993017636A1 Cited
EP0611556A1 Cited

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