US5728064A
Expired / Lapsed
US
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Balloon catheter with improved pressure source
Assignee: Boston Scientific Scimed Inc
•
Filing: 1996-05-21
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Granted: 1998-03-17
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Expires: 2016-05-21
Abstract
Abstract A balloon catheter having a long shaft with an inflatable balloon connected to its distal end with a pressure source connected to the shaft at an invivo point which operates to inflate and deflate the balloon. The balloon catheter may be a fixed-wire type, an over-the-wire type, or an single-operator-exchange type catheter. The pressure source may include a piston and a chamber with an actuation member attached to the piston. The actuation member may be a solid rod or a hollow robe. In the case where the actuation member is a hollow tube, the tube may be used to introduce inflation fluid into the pressure source and the inflation lumen. A receptacle such as a reel or tubular hoop may be used to contain the actuation member when pulled proximally. A pressure sensor/gauge and a balloon sizing scale may be incorporated into the catheter assembly to assist the treating physician in monitoring the procedure. A longitudinally oscillating drive, such as a solenoid, may be operatively connected to the pressure source.
Inventors
- 👤 Matthew M. Burns
- 👤 Daniel M. Lafontaine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:29
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/1018; A61M25/10184; A61M25/10187; A61M25/0043; A61M2025/0063; A61M2025/0098; A61M2025/102; A61M2025/1043; A61M2025/1077
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
84 words
A balloon catheter insertable into a living body, comprising: (a) an elongate shaft having a proximal end and a distal end; (b) an inflatable balloon having a proximal end and a distal end, the proximal end of the balloon connected to the distal end of the shaft; and (c) a pressure source connected to the shaft, the pressure source including means for limiting balloon over-expansion when the balloon is inflated to dilate a restriction and the restriction yields at a relatively high inflation pressure.
Claim 2
Dependent Claim
84 words
A balloon catheter insertable into a living body, comprising: (a) an elongate shaft having a proximal end and a distal end; (b) an inflatable balloon having a proximal end and a distal end, the proximal end of the balloon connected to the distal end of the shaft; and (c) a pressure source connected to the shaft, the pressure source including means for limiting balloon over-expansion when the balloon is inflated to dilate a restriction and the restriction yields at a relatively high inflation pressure.
Claim 3
Dependent Claim
21 words
A balloon catheter as in claim 1, further comprising: (d) a spring tip connected to the distal end of the balloon.
Claim 4
Dependent Claim
24 words
A balloon catheter as in claim 1, further comprising: (d) a guide wire lumen extending through at least a portion of the elongate shaft.
Claim 5
Dependent Claim
25 words
A balloon catheter as in claim 3, further comprising: (e) a guide wire lumen access port distal of the proximal end of the elongate shaft.
Claim 6
Dependent Claim
17 words
A balloon catheter as in claim 1, further comprising: (d) a piston disposed in the pressure source.
Claim 7
Dependent Claim
32 words
A balloon catheter as in claim 5, further comprising: (e) an actuation member having a proximal end and a distal end, the distal end of the actuation member connected to the piston.
Claim 8
Dependent Claim
15 words
A balloon catheter as in claim 6, wherein the actuation member is a solid rod.
Claim 9
Dependent Claim
14 words
A balloon catheter as in claim 6, wherein the actuation member is a tube.
Claim 10
Dependent Claim
21 words
A balloon catheter as in claim 8, further comprising: (f) a valve connected to the proximal end of the actuation member.
Claim 11
Dependent Claim
23 words
A balloon catheter as in claim 6, further comprising: (f) an actuation member receptacle connected to the proximal end of the actuation member.
Claim 12
Dependent Claim
23 words
A balloon catheter as in claim 6, further comprising: (f) a balloon size indicator disposed on either the actuation member or the shaft.
Claim 13
Dependent Claim
33 words
A balloon catheter as in claim 6, further comprising: (f) a pushing member having a proximal end and a distal end, the distal end of the pushing member connected to the pressure source.
Claim 14
Dependent Claim
29 words
A balloon catheter as in claim 12, wherein the pushing member is selected from the group consisting of a solid rod, a tube, a braided mesh, and a coil.
Claim 15
Dependent Claim
19 words
A balloon catheter as in claim 1, further comprising: (d) a pressure gauge operatively connected to the pressure source.
Claim 16
Dependent Claim
13 words
A balloon catheter as in claim 14, wherein the pressure gauge is fluidic.
Claim 17
Dependent Claim
13 words
A balloon catheter as in claim 14, wherein the pressure gauge is electronic.
Claim 18
Dependent Claim
15 words
A balloon catheter as in claim 14, wherein the pressure gauge is a spring gauge.
Claim 19
Dependent Claim
31 words
A balloon catheter as in claim 1, further comprising: (d) an inflation fluid disposed inside the pressure source, the inflation fluid being disposed inside the pressure source prior to final packaging.
Claim 20
Dependent Claim
32 words
A balloon catheter as in claim 1, further comprising: (d) an inflation fluid disposed inside the pressure source, the inflation fluid being disposed inside the pressure source just prior to use invivo.
Claim 21
Dependent Claim
18 words
A balloon catheter as in claim 5, further comprising: (e) an oscillating drive operatively connected to the piston.
Claim 22
Dependent Claim
16 words
A balloon catheter as in claim 20, wherein the drive is located near the pressure source.
Claim 23
Dependent Claim
19 words
A balloon catheter as in claim 20, wherein the drive is located near the proximal end of the shaft.
Claim 24
Dependent Claim
12 words
A balloon catheter as in claim 20, wherein the drive is magnetic.
Claim 25
Dependent Claim
13 words
A balloon catheter as in claim 23, wherein the drive is a solenoid.
Claim 26
Dependent Claim
19 words
A balloon catheter as in claim 6, further comprising: (f) an oscillating drive operatively connected to the actuation member.
Claim 27
Dependent Claim
19 words
A balloon catheter as in claim 25, wherein the drive is located near the proximal end of the shaft.
Claim 28
Dependent Claim
12 words
A balloon catheter as in claim 26, wherein the drive is magnetic.
Claim 29
Dependent Claim
15 words
A balloon catheter as in claim 25, wherein the drive operates at a subsonic frequency.
Claim 30
Dependent Claim
15 words
A balloon catheter as in claim 25, wherein the drive operates at a sonic frequency.
Claim 31
Independent Claim
146 words
A method of using a balloon catheter wherein the catheter includes an elongate shaft having a proximal end and a distal end; an inflatable balloon having a proximal end and a distal end, the proximal end of the balloon connected to the distal end of the shaft; and a pressure source connected to the shaft, the method comprising the steps of: (i) inserting the balloon catheter into a vascular system of a patient; (ii) positioning the balloon adjacent a treatment site inside the vascular system; (iii) actuating the pressure source to inflate the balloon to dilate a restriction such that the restriction yields at a relatively high inflation pressure but the balloon does not over-expand thereby reducing the potential for dissection or crack propagation; (iv) actuating the pressure source to at least partially deflate the balloon; and (v) withdrawing the balloon catheter from the vascular system.
Claim 32
Independent Claim
146 words
A method of using a balloon catheter wherein the catheter includes an elongate shaft having a proximal end and a distal end; an inflatable balloon having a proximal end and a distal end, the proximal end of the balloon connected to the distal end of the shaft; and a pressure source connected to the shaft, the method comprising the steps of: (i) inserting the balloon catheter into a vascular system of a patient; (ii) positioning the balloon adjacent a treatment site inside the vascular system; (iii) actuating the pressure source to inflate the balloon to dilate a restriction such that the restriction yields at a relatively high inflation pressure but the balloon does not over-expand thereby reducing the potential for dissection or crack propagation; (iv) actuating the pressure source to at least partially deflate the balloon; and (v) withdrawing the balloon catheter from the vascular system.
Claim 33
Dependent Claim
20 words
A method of using a balloon catheter as in claim 30 wherein the actuation steps are repeated in rapid succession.
Claim 34
Dependent Claim
25 words
A method of using a balloon catheter as in claim 31 wherein the actuation steps are repeated at a frequency substantially within the sonic range.
Claim 35
Dependent Claim
36 words
A method of using a balloon catheter as in claim 31 wherein the actuation steps are repeated at various frequencies to find and maintain the natural resonance frequency of the treatment site to facilitate atraumatic dilation.
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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) | 2001-03-16 | 2001-09-15 | 2002-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-16 | 2005-09-15 | 2006-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-16 | 2009-09-15 | 2010-03-17 | $7700.00 | Window Closed / Lapsed |