Patent US5649909A successfully refreshed from Google Patents.
US5649909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable stiffness multi-lumen catheter
Assignee: Boston Scientific Scimed Inc
•
Filing: 1996-08-05
•
Granted: 1997-07-22
•
Expires: 2016-08-05
Abstract
Abstract A dilation catheter having a shaft divided into a proximal portion and a distal portion. A dilation balloon is attached to the distal portion of the shaft. The proximal portion of the catheter may have a coating or a sleeve applied thereto to stiffen the proximal portion of the shaft. Alternatively, a dual lumen tube forms the proximal portion of the shaft while two separate tubes form the distal portion of the shaft thus making the distal portion more flexible then the proximal portion of the shaft.
Inventors
- 👤 Richard George Cornelius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:08
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61M25/0043; A61M25/0045; A61M25/0021; A61M25/0023; A61M25/0026; A61M2025/0034; A61M2025/0063; A61M2025/1043; A61M2025/1061; A61M25/0032; A61M25/0054
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
126 words
An apparatus comprising: a. a dilatation catheter shaft including a first tubular member having a longitudinal axis with a proximal end and a distal end adapted to receive a removable guide wire and including a second tubular member having a longitudinal axis with a proximal end and a distal end, wherein said second tubular member extends adjacent and exterior to said first tubular member over a portion of the length thereof, wherein said longitudinal axis of said first tubular member extends generally parallel to said longitudinal axis of said second tubular member; and b. a dilatation balloon in fluid communication with said distal end of said second tubular member wherein said dilatation catheter shaft is relatively more flexible at said distal end than said proximal end.
Claim 2
Independent Claim
126 words
An apparatus comprising: a. a dilatation catheter shaft including a first tubular member having a longitudinal axis with a proximal end and a distal end adapted to receive a removable guide wire and including a second tubular member having a longitudinal axis with a proximal end and a distal end, wherein said second tubular member extends adjacent and exterior to said first tubular member over a portion of the length thereof, wherein said longitudinal axis of said first tubular member extends generally parallel to said longitudinal axis of said second tubular member; and b. a dilatation balloon in fluid communication with said distal end of said second tubular member wherein said dilatation catheter shaft is relatively more flexible at said distal end than said proximal end.
Claim 3
Dependent Claim
161 words
An over-the-wire dilatation catheter comprising: a shaft including a length of a single tubular member formed by a single extrusion, the shaft having a distal portion and a proximal portion and having an inflation lumen and a guide wire lumen, said inflation lumen and said guide wire lumen separated by a common wall; a dilatation balloon connected to the distal portion of said shaft wherein said guide wire lumen extends through the dilatation balloon and said inflation lumen communicates with the interior of the dilatation balloon; and the shaft having varying flexibility along at least a portion of its length proximal of the balloon wherein the varying flexibility is provided by a coating applied to the proximal portion of the tubular member and wherein the thickness of said coating decreases gradually from the proximal end to the distal end of the coating segment of the tubular member so as to create a gradual transition in the flexibility of the tubular member.
Claim 4
Dependent Claim
161 words
An over-the-wire dilatation catheter comprising: a shaft including a length of a single tubular member formed by a single extrusion, the shaft having a distal portion and a proximal portion and having an inflation lumen and a guide wire lumen, said inflation lumen and said guide wire lumen separated by a common wall; a dilatation balloon connected to the distal portion of said shaft wherein said guide wire lumen extends through the dilatation balloon and said inflation lumen communicates with the interior of the dilatation balloon; and the shaft having varying flexibility along at least a portion of its length proximal of the balloon wherein the varying flexibility is provided by a coating applied to the proximal portion of the tubular member and wherein the thickness of said coating decreases gradually from the proximal end to the distal end of the coating segment of the tubular member so as to create a gradual transition in the flexibility of the tubular member.
Claim 5
Dependent Claim
152 words
An over-the-wire dilatation catheter comprising: a shaft having a proximal portion and a distal portion, said proximal portion having a first and a second lumen, said first and second lumens separated by a common wall, said distal portion having a third and a fourth lumen, said third and fourth lumens defined by a first tubular member, having a longitudinal axis, and a second tubular member having a longitudinal axis, respectively; said first tubular member being separate from said second tubular member and co-extending exterior of said second tubular member, wherein said longitudinal axis of said first tubular member extends generally parallel to said longitudinal axis of said second tubular member; and a dilatation balloon connected to the distal portion of the shaft wherein the third lumen continues the first lumen through the interior of the dilatation balloon and the fourth lumen connects the interior of the dilatation balloon with the second lumen.
Claim 6
Dependent Claim
152 words
An over-the-wire dilatation catheter comprising: a shaft having a proximal portion and a distal portion, said proximal portion having a first and a second lumen, said first and second lumens separated by a common wall, said distal portion having a third and a fourth lumen, said third and fourth lumens defined by a first tubular member, having a longitudinal axis, and a second tubular member having a longitudinal axis, respectively; said first tubular member being separate from said second tubular member and co-extending exterior of said second tubular member, wherein said longitudinal axis of said first tubular member extends generally parallel to said longitudinal axis of said second tubular member; and a dilatation balloon connected to the distal portion of the shaft wherein the third lumen continues the first lumen through the interior of the dilatation balloon and the fourth lumen connects the interior of the dilatation balloon with the second lumen.
Claim 7
Dependent Claim
29 words
A catheter according to claim 3 wherein said first tubular member and said second tubular member are joined together at various points along the distal portion of the catheter.
Claim 8
Dependent Claim
35 words
A catheter according to claim 3 wherein said proximal portion of said shaft is constructed from a different material than either of said first and second tubular members in said distal portion of said shaft.
Claim 9
Dependent Claim
28 words
The over-the-wire dilatation catheter of claim 3, wherein said longitudinal axis of said first tubular member is laterally displaced from said longitudinal axis of said second tubular member.
Claim 10
Dependent Claim
155 words
An over-the-wire catheter comprising: a shaft having a proximal portion, a distal portion, an inflation lumen and a guide wire lumen, said inflation lumen and said guide wire lumen separated by a common wall in at least the proximal portion of the shaft; said distal portion of the shaft being formed by a first tubular member having a longitudinal axis and a first lumen therethrough and a second tubular member having a longitudinal axis and a second lumen therethrough, said first tubular member extending coextensively along the exterior of said second tubular member, wherein said longitudinal axis of said first tubular member extends generally parallel to said longitudinal axis of said second tubular member, said first lumen continuing said guide wire lumen through said balloon and said second lumen continuing said inflation lumen; and a balloon connected to the distal portion of said shaft wherein said second lumen communicates with the interior of the balloon.
Claim 11
Dependent Claim
155 words
An over-the-wire catheter comprising: a shaft having a proximal portion, a distal portion, an inflation lumen and a guide wire lumen, said inflation lumen and said guide wire lumen separated by a common wall in at least the proximal portion of the shaft; said distal portion of the shaft being formed by a first tubular member having a longitudinal axis and a first lumen therethrough and a second tubular member having a longitudinal axis and a second lumen therethrough, said first tubular member extending coextensively along the exterior of said second tubular member, wherein said longitudinal axis of said first tubular member extends generally parallel to said longitudinal axis of said second tubular member, said first lumen continuing said guide wire lumen through said balloon and said second lumen continuing said inflation lumen; and a balloon connected to the distal portion of said shaft wherein said second lumen communicates with the interior of the balloon.
Claim 12
Dependent Claim
22 words
A catheter according to claim 7 wherein said first tubular member is formed of a different material than said second tubular member.
Claim 13
Dependent Claim
26 words
A catheter according to claim 7 wherein said first and second tubular members are joined together at various points along the distal portion of the catheter.
Claim 14
Dependent Claim
28 words
The over-the-wire dilatation catheter of claim 7, wherein said longitudinal axis of said first tubular member is laterally displaced from said longitudinal axis of said second tubular member.
References Cited (Backward Citations)
US883583A
Cited
US2481488A
Cited
US3087493A
Cited
US3528869A
Cited
US3618614A
Cited
US3634924A
Cited
US3865666A
Cited
US4210478A
Cited
US3985601A
Cited
US4072146A
Cited
US4195637A
Cited
US4177815A
Cited
US4207900A
Cited
US4251305A
Cited
US4342316A
Cited
US4406653A
Cited
US4405313A
Cited
US4498473A
Cited
US4751924A
Cited
US4597755A
Cited
US4762129B1
Cited
US4762129A
Cited
US4661095A
Cited
US4739768B2
Cited
US4739768B1
Cited
US4739768A
Cited
US4775371A
Cited
US4790315A
Cited
US4782834A
Cited
US4771777A
Cited
EP0347458A1
Cited
US4958634A
Cited
US4863442A
Cited
US4820349A
Cited
US4850969A
Cited
US4906241A
Cited
US4963313A
Cited
US4994032A
Cited
US4892519A
Cited
US4943278A
Cited
US4944745A
Cited
US4998917A
Cited
US4877031A
Cited
US4981478A
Cited
US4913701A
Cited
US5015230A
Cited
US5040548A
Cited
US4976690A
Cited
US5217440A
Cited
US5002559A
Cited
US5209729A
Cited
US5087247A
Cited
US5085649A
Cited
US5496275A
Cited
US5306247A
Cited
US5261879A
Cited
US5364347A
Cited
US5370615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-07-21 | 2001-01-20 | 2001-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-07-21 | 2005-01-20 | 2005-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-07-21 | 2009-01-20 | 2009-07-22 | $7700.00 | Window Closed / Lapsed |