US5255690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for proximal support of a guide wire during catheter exchange
Assignee: Boston Scientific Scimed Inc
•
Filing: 1992-07-16
•
Granted: 1993-10-26
•
Expires: 2012-07-16
Abstract
Abstract A method and apparatus are provided for withdrawing a catheter proximally from a guide catheter lumen while supporting a guide wire in a longitudinal and lateral direction proximal to the guide catheter lumen. The guide catheter lumen has a guide catheter lumen, a proximal end and a distal end. A catheter extends through the guide catheter lumen and has a guide wire lumen at a distal portion thereof having a proximal end and a distal end. A length of the guide wire lumen is shorter than a length of the catheter. A guide wire extends through the guide wire lumen and the guide catheter lumen. A sleeve is provided over a segment of the guide wire extending proximally from the guide catheter lumen. The sleeve maintains that segment of the guide wire in close lateral proximity to the catheter as the catheter is withdrawn proximally from the guide catheter lumen and the guide wire is restrained from such proximal movement.
Inventors
- 👤 Peter T. Keith
- 👤 Thomas V. Ressemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:02
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/0169; A61M2025/0183; A61M25/09; A61M25/10; A61M25/104
Claims Analysis
Total Claims: 55
Claim 1
Independent Claim
233 words
In a catheter system having a guide catheter, a catheter and a guide wire, wherein the catheter includes a guide wire lumen in a distal portion of the catheter with a length of the guide wire lumen being shorter than a length of the catheter, and wherein the guide wire extends through the guide wire lumen and extends with the catheter through a lumen in the guide catheter, a method for withdrawing the catheter from the guide catheter lumen while leaving the guide wire in position through the guide catheter lumen, the method comprising: providing constraining means positioned proximal to the guide catheter lumen and substantially encompassing the guide wire for preventing the guide wire from bowing and significantly moving laterally away from the catheter; holding the guide wire proximally adjacent the constraining means to prevent the guide wire from moving longitudinally relative to the guide catheter lumen; withdrawing the catheter from the guide catheter lumen in a proximal, axial direction until a distal end of the guide wire lumen is proximal of the guide catheter lumen; holding the guide wire at a point distal of the guide wire lumen to prevent the guide wire from moving longitudinally relative to the guide catheter lumen; releasing the guide wire proximally adjacent the constraining means; and withdrawing the catheter in the proximal, axial direction until the guide wire lumen is free from the guide wire.
Claim 2
Dependent Claim
233 words
In a catheter system having a guide catheter, a catheter and a guide wire, wherein the catheter includes a guide wire lumen in a distal portion of the catheter with a length of the guide wire lumen being shorter than a length of the catheter, and wherein the guide wire extends through the guide wire lumen and extends with the catheter through a lumen in the guide catheter, a method for withdrawing the catheter from the guide catheter lumen while leaving the guide wire in position through the guide catheter lumen, the method comprising: providing constraining means positioned proximal to the guide catheter lumen and substantially encompassing the guide wire for preventing the guide wire from bowing and significantly moving laterally away from the catheter; holding the guide wire proximally adjacent the constraining means to prevent the guide wire from moving longitudinally relative to the guide catheter lumen; withdrawing the catheter from the guide catheter lumen in a proximal, axial direction until a distal end of the guide wire lumen is proximal of the guide catheter lumen; holding the guide wire at a point distal of the guide wire lumen to prevent the guide wire from moving longitudinally relative to the guide catheter lumen; releasing the guide wire proximally adjacent the constraining means; and withdrawing the catheter in the proximal, axial direction until the guide wire lumen is free from the guide wire.
Claim 3
Dependent Claim
22 words
The method of claim 1 wherein the step of providing constraining means further comprises: providing an elongated sleeve as the constraining means.
Claim 4
Dependent Claim
36 words
The method of claim 2 wherein the step of providing a sleeve further comprises: providing an elongate slit in the sleeve extending from a proximal end of the sleeve to a distal end of the sleeve.
Claim 5
Dependent Claim
28 words
The method of claim 3 wherein the step of providing a sleeve comprises: providing the sleeve with an inner diameter sized to encompass only the guide wire therein.
Claim 6
Dependent Claim
41 words
The method of claim 4 wherein the step of providing a sleeve further comprises: loading the sleeve over a proximal end of the guide wire and therealong until the sleeve is positioned adjacent the proximal end of the guide catheter lumen.
Claim 7
Dependent Claim
35 words
The method of claim 5 wherein the first withdrawing step comprises: forcing the guide wire to be pulled through the slit of the sleeve allowing the sleeve to be peeled off of the guide wire.
Claim 8
Dependent Claim
22 words
The method of claim 4 wherein the step of providing the sleeve further comprises: inserting the guide wire longitudinally into the sleeve.
Claim 9
Dependent Claim
35 words
The method of claim 7 wherein the first withdrawing step comprises: forcing the guide wire to be pulled through the slit of the sleeve allowing the sleeve to be pulled off of the guide wire.
Claim 10
Dependent Claim
34 words
The method of claim 2 wherein the step of providing a sleeve comprises: providing the sleeve with an inner lumen with a diameter large enough to encompass both the guide wire and the catheter.
Claim 11
Dependent Claim
33 words
The method of claim 9 wherein the step of providing a sleeve further comprises: inserting the guide wire and the catheter laterally into the sleeve through a longitudinal slit formed in the sleeve.
Claim 12
Dependent Claim
43 words
The method of claim 9 wherein the step of providing the sleeve further comprises: loading the sleeve over a proximal end of the guide wire and catheter and therealong until the sleeve is positioned adjacent the proximal end of the guide catheter lumen.
Claim 13
Dependent Claim
29 words
The method of claim 2 wherein the step of providing a sleeve comprises: forming the sleeve having a length slightly greater than a length of the guide wire lumen.
Claim 14
Dependent Claim
29 words
The method of claim 2 wherein the step of providing a sleeve comprises: forming the sleeve having a length slightly shorter than a length of the guide wire lumen.
Claim 15
Dependent Claim
17 words
The method of claim 2 wherein the second withdrawing step comprises: removing the sleeve with the catheter.
Claim 16
Dependent Claim
21 words
The method of claim 1 wherein the step of providing constraining means comprises: forming the constraining means from an elongate coil.
Claim 17
Dependent Claim
78 words
The method of claim 15 wherein the step of providing constrainment means comprises: moving the coil from a compressed state in which the coil is in a close-wound configuration encompassing a proximal end of the catheter to an expanded state in which the coil is elongated to a length slightly greater than the length of the guide wire lumen and positioned adjacent the proximal end of the guide catheter lumen encompassing both the catheter and the guide wire.
Claim 18
Dependent Claim
93 words
The method of claim 16 wherein the first withdrawing step comprises: restraining a proximal end of the coil and the guide wire from longitudinal movement relative to the guide catheter lumen; grasping a distal end of the expanded coil and the catheter proximal to the guide catheter lumen; and moving the distal end of the coil and the catheter proximally toward the proximal end of the coil and recompressing the coil until the distal end of the guide wire lumen exits the guide catheter lumen and the coil returns to a compressed state.
Claim 19
Dependent Claim
84 words
The method of claim 16 wherein the first withdrawing step comprises: forming the elongated coil so that it selectively maintains itself in an expanded state; holding a proximal end of the expanded coil so that a distal end of the expanded coil is positioned proximally adjacent the proximal end of the guide catheter lumen; and moving the catheter through the expanded coil toward the proximal end of the expanded coil until the distal end of the guide wire lumen exits the guide catheter lumen.
Claim 20
Dependent Claim
71 words
The method of claim 1 wherein the catheter system further comprises: a proximal fitting having a proximal end and a distal end with a lumen extending therebetween, the distal end being rotatably mounted to a proximal end of the guide catheter, the proximal lumen being in fluid communication with the guide catheter lumen so that the guide wire and catheter extend through both the guide catheter lumen and proximal fitting lumen.
Claim 21
Dependent Claim
29 words
The method of claim 19 wherein the step of providing a sleeve comprises: removably attaching a distal end of the sleeve to a proximal end of the guide catheter.
Claim 22
Dependent Claim
23 words
The method of claim 19 wherein the step of providing constraining means comprises: positioning the constraining means proximal to the proximal fitting lumen.
Claim 23
Dependent Claim
42 words
The method of claim 21 wherein the first withdrawing step further comprises: withdrawing the catheter from both the guide catheter lumen and the proximal fitting lumen until the distal end of the guide wire lumen is proximal to the proximal fitting lumen
Claim 24
Dependent Claim
47 words
The method of claim 19 wherein the proximal fitting has means for closing the proximal fitting lumen, and wherein the second holding step comprises: actuating the closing means to limit longitudinal movement of the guide wire extending through the proximal fitting lumen relative to the guide catheter.
Claim 25
Dependent Claim
13 words
The method of claim 1 wherein the catheter is a dilatation balloon catheter.
Claim 26
Independent Claim
23 words
The method of claim i wherein the guide wire lumen extends through a dilatation balloon located at a distal end of the catheter.
Claim 27
Dependent Claim
139 words
A catheter system comprising: a guide catheter having a guide catheter lumen, a proximal end, and a distal end; a catheter extending through the guide catheter lumen, the catheter having a guide wire lumen at a distal portion of the catheter with a proximal end and a distal end, wherein a length of the guide wire lumen is shorter than a length of the catheter; a guide wire extending through the guide wire lumen and the guide catheter lumen; and supporting means over a segment of the guide wire extending proximally from the guide catheter lumen for preventing bowing of the guide wire by maintaining that segment of the guide wire in close lateral proximity to the catheter as the catheter is withdrawn proximally from the guide catheter lumen and the guide wire is restrained from such proximal movement.
Claim 28
Dependent Claim
139 words
A catheter system comprising: a guide catheter having a guide catheter lumen, a proximal end, and a distal end; a catheter extending through the guide catheter lumen, the catheter having a guide wire lumen at a distal portion of the catheter with a proximal end and a distal end, wherein a length of the guide wire lumen is shorter than a length of the catheter; a guide wire extending through the guide wire lumen and the guide catheter lumen; and supporting means over a segment of the guide wire extending proximally from the guide catheter lumen for preventing bowing of the guide wire by maintaining that segment of the guide wire in close lateral proximity to the catheter as the catheter is withdrawn proximally from the guide catheter lumen and the guide wire is restrained from such proximal movement.
Claim 29
Dependent Claim
31 words
The apparatus of claim 26 wherein the supporting means comprises a sleeve with a longitudinal slit extending from a proximal end of the sleeve to a distal end of the sleeve.
Claim 30
Dependent Claim
35 words
The apparatus of claim 26 wherein the supporting means comprises a sleeve with an inner lumen with a diameter large enough to encompass both the guide wire and the guide wire lumen of the catheter.
Claim 31
Dependent Claim
27 words
The apparatus of claim 26 wherein the supporting means comprises a sleeve with an inner lumen with a diameter sized to encompass only the guide wire therein.
Claim 32
Dependent Claim
13 words
The apparatus of claim 26 wherein the supporting means comprises a elongate coil.
Claim 33
Dependent Claim
81 words
The apparatus of claim 30 wherein the coil has a first compressed state wherein the coil is in a close-wound configuration and is positioned about the dilatation catheter adjacent a proximal end of the dilatation catheter and has a second expanded state wherein the coil is elongated to a length slightly greater than the length of the guide wire lumen and is positioned adjacent the proximal end of the guide catheter lumen about both the dilatation catheter and the guide wire.
Claim 34
Dependent Claim
16 words
The apparatus of claim 31 wherein the coil is selectively maintainable in its second expanded state.
Claim 35
Dependent Claim
15 words
The apparatus of claim 31 wherein the coil is biased towards its first compressed state.
Claim 36
Dependent Claim
70 words
The apparatus of claim 26 wherein the catheter system further comprises: a proximal fitting having a proximal end and a distal end with a lumen extending therebetween, the distal end being connected to a proximal end of the guide catheter, the proximal fitting being in fluid communication with the guide catheter lumen so that the guide wire and catheter extend through both the guide catheter lumen and proximal fitting lumen.
Claim 37
Dependent Claim
25 words
The apparatus of claim 34 wherein the supporting means is positioned over a segment of the guide wire extending proximally from the proximal fitting lumen.
Claim 38
Dependent Claim
25 words
The apparatus of claim 34 wherein the proximal fitting has means for securing the guide wire from longitudinal movement relative to the proximal fitting lumen.
Claim 39
Dependent Claim
51 words
The apparatus of claim 34 wherein the supporting means comprises means for connecting the supporting means to the proximal end of the proximal fitting lumen, the connecting means having means for permitting clasping of the guide wire distal to the supporting means once the catheter has exited the proximal fitting lumen.
Claim 40
Dependent Claim
22 words
The apparatus of claim 26 wherein the supporting means has a length slightly greater than a length of the guide wire lumen.
Claim 41
Dependent Claim
13 words
The apparatus of claim 26 wherein the catheter is a dilatation balloon catheter.
Claim 42
Dependent Claim
23 words
The apparatus of claim 26 wherein the guide wire lumen extends through a dilation balloon located at a distal end of the catheter.
Claim 43
Independent Claim
125 words
An apparatus for use with an intralumenal catheter system which has a guide wire and a catheter that has a guide wire lumen therein for slidably receiving the guide wire, both of which extend longitudinally through a guide lumen extending through both a guide catheter wherein the apparatus is adapted to maintain the guide wire in a desired position relative to the guide lumen during withdrawal of the catheter from the guide lumen, the apparatus comprising: an elongated sleeve positioned generally adjacent a proximal end of the guide catheter and surrounding a segment of the guide wire, with the sleeve having an inner lumen which is suitable for providing lateral support to the guide wire during proximal withdrawal of the catheter from the guide lumen.
Claim 44
Independent Claim
125 words
An apparatus for use with an intralumenal catheter system which has a guide wire and a catheter that has a guide wire lumen therein for slidably receiving the guide wire, both of which extend longitudinally through a guide lumen extending through both a guide catheter wherein the apparatus is adapted to maintain the guide wire in a desired position relative to the guide lumen during withdrawal of the catheter from the guide lumen, the apparatus comprising: an elongated sleeve positioned generally adjacent a proximal end of the guide catheter and surrounding a segment of the guide wire, with the sleeve having an inner lumen which is suitable for providing lateral support to the guide wire during proximal withdrawal of the catheter from the guide lumen.
Claim 45
Dependent Claim
26 words
The apparatus of claim 41 wherein the sleeve includes a longitudinal slit from a proximal end of the sleeve to a distal end of the sleeve.
Claim 46
Dependent Claim
24 words
The apparatus of claim 41 wherein the inner lumen of the sleeve is large enough to encompass both the guide wire and the catheter.
Claim 47
Dependent Claim
20 words
The apparatus of claim 41 wherein the inner lumen of the sleeve is sized to encompass only the guide wire.
Claim 48
Dependent Claim
12 words
The apparatus of claim 41 wherein the sleeve comprises an exchange coil.
Claim 49
Dependent Claim
79 words
The apparatus of claim 45 wherein the exchange coil has a first compressed state wherein the coil is in a close-wound configuration and is positioned about a proximal end of the catheter about the dilatation catheter and has a second expanded state wherein the coil is elongated to a length slightly greater than the length of the guide wire lumen and is positioned adjacent the proximal end of the guide catheter about both the catheter and the guide wire.
Claim 50
Dependent Claim
17 words
The apparatus of claim 46 wherein the exchange coil is selectively maintainable in its second expanded state.
Claim 51
Dependent Claim
16 words
The apparatus of claim 46 wherein the exchange coil is biased towards its first compressed state.
Claim 52
Dependent Claim
21 words
The apparatus of claim 41 wherein the sleeve has a length slightly greater than a length of the guide wire lumen.
Claim 53
Dependent Claim
21 words
The apparatus of claim 41 wherein the sleeve has a length slightly shorter than a length of the guide wire lumen.
Claim 54
Dependent Claim
13 words
The apparatus of claim 41 wherein the catheter is a dilatation balloon catheter.
Claim 55
Dependent Claim
23 words
The apparatus of claim 41 wherein the guide wire lumen extends through a dilatation balloon located at a distal end of the catheter.
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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) | 1996-10-25 | 1997-04-26 | 1997-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-10-25 | 2001-04-26 | 2001-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-10-25 | 2005-04-26 | 2005-10-26 | $7700.00 | Window Closed / Lapsed |