US6682536B2 Expired / Lapsed US ⏱️ 0.0 years remaining

Guidewire introducer sheath

Assignee: Boston Scientific Scimed Inc

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Filing: 2001-03-22

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Granted: 2004-01-27

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Expires: 2021-03-22

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Abstract

Abstract Systems and methods for positioning a first guidewire ( 25 ) in a primary vessel (M) and a second guidewire ( 27 ) in a branch vessel (B). One embodiment comprises an introducer ( 10 ) having first ( 12 ) and second lumens ( 14 ) adapted to slidably receive the first guidewire within the first lumen and the second guidewire within the second lumen. One method embodiment includes inserting the first guidewire into the main vessel, introducing the introducer over the first guidewire, and inserting the second guidewire within the second lumen such that the second guidewire extends into the branch vessel. The introducer is withdrawn while maintaining the first and second guidewires in the respective vessels.

Inventors

👤 Gil M. Vardi
👤 Eric Williams
👤 Elsa Chavez
👤 Henry Bourang
👤 Niyazi U. Beyhan

Bibliographic Details

Application Number —

Jurisdiction US

Data Source google_patents

Last Synchronized 2026-10-23 16:12

CPC Classifications

A; A61; A61M; A61M25/00; A61M25/01; A61F; A61F2/00; A61F2/95; A61F2/954; A61F2/958; A61M25/09; A61M25/09041; A61B; A61B17/00; A61B2017/0046; A61B2017/00469; A61F2/82; A61F2/856; A61F2250/00; A61F2250/0058; A61F2250/006; A61M2025/018

Claims Analysis

Total Claims: 24

Claim 1

Independent Claim 134 words

A system for introducing a guidewire into a branch vessel, said system comprising: a guidewire introducer having a first lumen, and a second lumen adjacent said first lumen, each of said first and second lumens having a distal opening, wherein said second lumen comprises a deflector located proximate said second lumen distal opening, said deflector configured to deflect a guidewire end through said second lumen distal opening; a first marker having a first radiopacity, said first marker disposed on a first side of said introducer adjacent said second distal opening; and a second marker having a second radiopacity, said second marker disposed on a second side of said introducer adjacent said second distal opening, wherein said first side is opposite said second side, and wherein said first radiopacity is different from said second radiopacity.

Claim 2

Independent Claim 134 words

Claim 3

Dependent Claim 29 words

The system as in claim 1 wherein said second lumen comprises a longitudinal axis, and wherein said deflector is positioned at a non-parallel angle relative to said longitudinal axis.

Claim 4

Dependent Claim 16 words

The system as in claim 2 wherein said non-parallel angle is about forty five (45) degrees.

Claim 5

Dependent Claim 53 words

The system as in claim 1 further comprising: a first guidewire adapted to receive said first lumen thereover; and a first catheter having a balloon disposed proximate a first catheter distal end, said first catheter adapted to be inserted over said first guidewire into a main vessel after removal of said guidewire introducer.

Claim 6

Dependent Claim 55 words

The system as in claim 1 further comprising: a second guidewire adapted to be slidably received by said second lumen; and a second catheter having a balloon disposed proximate a second catheter distal end, said second catheter adapted to be inserted over said second guidewire into a main vessel after removal of said guidewire introducer.

Claim 7

Dependent Claim 35 words

The system as in claim 1 wherein the distal opening of the first lumen is disposed at a more distal location along the guidewire introducer with respect to the distal opening of the second lumen.

Claim 8

Dependent Claim 23 words

The system as in claim 2 wherein said second lumen distal opening is positioned at a non-parallel angle relative to said longitudinal axis.

Claim 9

Dependent Claim 29 words

The system as in claim 1 , wherein the difference in said first and second radiopacities is due to differences in thickness of said first and second radiopaque markers.

Claim 10

Dependent Claim 29 words

The system as in claim 1 , wherein the difference in said first and second radiopacities is due to differences in size of said first and second radiopaque markers.

Claim 11

Dependent Claim 29 words

The system as in claim 1 , wherein the difference in said first and second radiopacities is due to differences in material of said first and second radiopaque markers.

Claim 12

Dependent Claim 55 words

Claim 13

Independent Claim 112 words

A method of introducing a branch vessel guidewire, said method comprising: inserting a first guidewire into a main vessel; advancing a guidewire introducer through said main vessel over said first guidewire, said guidewire introducer having a first lumen that slidably engages said first guidewire; positioning the guidewire introducer such that a distal end of the first lumen is disposed past a bifurcation of the main and branch vessels, and a radiopaque marker on the guidewire introducer is proximate said bifurcation; and thereafter advancing a second guidewire through a second guidewire introducer lumen adjacent said first lumen, said second guidewire introducer lumen having an opening proximate a distal end of said second lumen.

Claim 14

Independent Claim 112 words

Claim 15

Dependent Claim 39 words

The method of claim 12 , further comprising: removing the guidewire introducer from the main vessel; inserting a first catheter into said main vessel; and expanding a first balloon on said catheter when said balloon is proximate said bifurcation.

Claim 16

Dependent Claim 25 words

The method of claim 13 , further comprising: inserting a second catheter into a branch vessel; and expanding a second balloon on said second catheter.

Claim 17

Dependent Claim 34 words

The method of claim 14 wherein said expanding a balloon on said second catheter comprises expanding said second catheter balloon when said second catheter balloon is at least partially disposed in said branch vessel.

Claim 18

Dependent Claim 19 words

The method as in claim 14 wherein said expanding said first and second balloons comprises a kissing balloon technique.

Claim 19

Dependent Claim 32 words

The method as in claim 14 wherein said expanding said first and second balloons comprises expanding said first balloon in said main vessel and expanding said second balloon in said branch vessel.

Claim 20

Dependent Claim 41 words

The method of claim 12 , wherein said second lumen has a deflector and wherein said advancing the second guidewire comprises deflecting said second guidewire with said deflector so that an end of said second guidewire advances into said branch vessel.

Claim 21

Independent Claim 75 words

A system for introducing a guidewire into a branch vessel, said system comprising: a guidewire introducer having first and second lumens, each of said first and second lumens having a distal opening, a first marker having a first radiopacity, said first marker disposed adjacent said first distal opening; and a second marker having a second radiopacity, said second marker disposed adjacent said second distal opening, wherein said first radiopacity is different from said second radiopacity.

Claim 22

Independent Claim 75 words

Claim 23

Dependent Claim 53 words

Claim 24

Dependent Claim 35 words

The system as in claim 19 wherein the distal opening of the first lumen is disposed at a more distal location along the guidewire introducer with respect to the distal opening of the second lumen.

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USPTO Annuity & Maintenance Windows

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	2007-01-26	2007-07-28	2008-01-27	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2011-01-26	2011-07-28	2012-01-27	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2015-01-26	2015-07-28	2016-01-27	$7700.00	Window Closed / Lapsed

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