EP0855171A2
Expired / Lapsed
EP
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Stent delivery device
Assignee: Terumo Corp
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Filing: 1998-01-23
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Granted: —
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Expires: 2018-01-23
Abstract
Abstract The stent delivery device (1) comprises a tubular shaft body (2), a foldable and inflatable balloon (3) attached to the distal end portion of the shaft body, and a stent (4) fitted over the folded balloon (3). The shaft body has a lumen (16) for inflating the balloon which communicates with the inside of the balloon (3). The balloon (3) has an inflatable portion (31) which is inflated into the shape of an approximately uniform-diameter cylinder by a fluid injected through the lumen (16). The stent delivery device (1) further has a distal side stopper (5) which is secured close to the distal end of the inflatable portion (31) of the balloon (3) and prevents the shaft of the stent (4) towards the distal side, and a proximal side stopper (6) which is secured close to the proximal end of the inflatable portion (31) of the balloon (3) and prevents the shift of the stent (4) towards the proximal side.
Inventors
- 👤 Kinya Harada
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 19:57
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/95; A61F2/958; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61M; A61M25/00; A61M25/10
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
175 words
A stent delivery device comprising, a tubular shaft body, a foldable and inflatable balloon attached to the distal end portion of the
shaft body, and a stent fitted over the folded balloon and expanded by the inflation of
the balloon, said shaft body having a lumen for inflating said balloon, said balloon having an inflatable portion which is inflated into the shape
of an approximately uniform-diameter cylinder by the fluid injected
through said lumen, a distal side stopper for preventing the shift of said stent toward the
distal side being secured to said shaft body close to the distal end of said
inflatable portion of said balloon , a proximal side stopper for preventing the shift of said stent toward the
proximal side being secured to said shaft body close to the proximal end of
said inflatable portion of said balloon; and a reinforcement secured to the outside surface of said shaft body with the
distal end aligned with or near the distal end of said inflatable portion of
said balloon inside said inflatable portion.
Claim 2
Dependent Claim
40 words
A stent delivery device of claim 1, wherein said balloon has a
distal side bonding portion for attaching the balloon to said shaft body, and
said distal side stopper is disposed so as to cover the distal side bonding
portion.
Claim 3
Dependent Claim
42 words
A stent delivery device of claim 1 or 2, wherein said balloon has a
proximal side bonding portion for attaching the balloon to said shaft body,
and said proximal side stopper is disposed so as to cover the proximal side
bonding portion.
Claim 4
Dependent Claim
35 words
A stent delivery device of any one of claims 1 to 3, wherein said
balloon practically does not have taper inflatable portions on the distal and
proximal sides of said inflatable portion of said balloon.
Claim 5
Dependent Claim
35 words
A stent delivery device of any one of claims 1 to 4, wherein said
distal side stopper is tapered so as to become gradually smaller in diameter
toward the distal end of the shaft body.
Claim 6
Dependent Claim
35 words
A stent delivery device of any one of claims 1 to 5, wherein said
proximal side stopper is tapered so as to become gradually smaller in
diameter toward the proximal end of the shaft body.
Claim 7
Dependent Claim
53 words
A stent delivery device of any one of claims 1 to 6, wherein said
distal side stopper and said proximal side stopper are formed in the shape
of a ring and have exterior diameters approximately equal to or a little
larger than the exterior diameter of said stent fitted over said folded
balloon.
Claim 8
Dependent Claim
47 words
A stent delivery device of any one of claims 1 to 7, wherein a
reinforcement is secured to the outside surface of said shaft body with the
proximal end aligned with or near the proximal end of said inflatable
portion of said balloon inside said inflatable portion.
Claim 9
Dependent Claim
35 words
A stent delivery device of any one of claims 1 to 8, wherein said
shaft body has a lumen for passing a guide wire through, being open at the
distal end of said shaft body.
Claim 10
Dependent Claim
52 words
A stent delivery device of any one of claims 1 to 9, wherein said
shaft body has a lumen for passing a guide wire through with one end being
open at the distal end of said shaft body and the other end being open in the
middle part of the shaft body.
Claim 11
Dependent Claim
52 words
A stent delivery device of any one of claims 1 to 10, wherein said
shaft body has a lumen for passing a guide wire through with one end being
open at the distal end of said shaft body and the other end being open at the
proximal end of the shaft body.
Claim 12
Dependent Claim
48 words
A stent delivery device of any one of claims 1 to 11, wherein said
shaft body has a resilient core which extends from the proximal end to the
distal end inside said shaft body, and a guiding portion which extends
beyond the distal end of said shaft body.
Claim 13
Dependent Claim
40 words
A stent delivery device of any one of claims 1 to 12, wherein said
reinforcement secured to said shaft body so as to close or contacting with
the distal end said inflatable portion of said balloon inside said inflatable
portion.
Claim 14
Dependent Claim
30 words
A stent delivery device of any one of claims 1 to 12, wherein a
proximal end portion of said reinforcement was covered by a distal bonding
portion of the balloon.
References Cited (Backward Citations)
No citation records indexed.
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