US4614188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balloon catheter
Assignee: Uresil Corp
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Filing: 1985-06-18
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Granted: 1986-09-30
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Expires: 2005-06-18
Abstract
Abstract The disclosed balloon catheter includes a proximal catheter segment, a distal catheter segment, and an inflatable balloon member secured to and disposed between the proximal and distal catheter segments. A tension member is secured to the distal catheter segment and passes through the lumen of a coil spring included in the proximal catheter segment, such that the tension member is free to slide within the coil spring. A stop member is secured to the proximal end of the tension member to limit the sliding movement of the tension member inside the proximal catheter segment. The disclosed structure permits the balloon member to stretch both axially and circumferentially as it inflates, thereby improving the concentricity of the resulting balloon. In addition, in the preferred embodiment the stop member is positioned on the tension member such that the tension member is free to slide further in the coil spring after the balloon member has been inflated to its normal inflated state, thereby providing protection against overpressures in the balloon member.
Inventors
- 👤 Seymour Bazell
- 👤 Edward M. Goldberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:33
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/1018; A61M25/10181; A61B; A61B17/00; A61B17/22; A61B17/22031; A61B17/22032; A61M25/0043; A61M25/005; A61M25/10183; A61M2025/0098; A61M2025/1043; A61M2025/1075
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
310 words
In an elongated, single lumen, balloon catheter for insertion in a body passage, the catheter including an elongated flexible support structure having distal and proximal ends that includes an elongated, flexible, coil spring means whose interior surface bounds a single, elongated, lumen of the catheter, and through which lumen a pressurizing fluid is to be selectively supplied, and with external resilient sheath means surrounding, and supported on, the exterior of the elongated coil spring means, and with an annular, inflatable, resilient balloon means also provided as part of the resilient covering of the coil spring support structure and being in fluid communication only with the catheter's lumen; the improvement comprising, in combination: the annular inflatable balloon means being located adjacent the distal end of the catheter and being sized, when deflated, to be selectively insertable with its supporting catheter structure into a selected body passage of a subject; an inflation means for said inflatable balloon being connected to the support structure adjacent the proximal end thereof that is intended to be positioned outside the body of the subject, said inflation means including a fluid containing chamber that is in communication, through said single lumen of the catheter, with the inflatable balloon located in a subject's selected body passage; said fluid containing chamber having at least one thin and flexible, deformable wall adapted to be manipulated by digital pressure supplied by the user of the catheter said chamber including means to provide direct control of the inflation pressure in the catheter's single lumen and in the balloon by manual pressure applied to said flexible wall, said thin and flexible deformable wall being also operative to provide means for tactile sensing of fluid pressure variation within the fluid containing chamber that is responsive to variations in pressure developed in the distal inflated balloon that is positioned in the body of the subject.
Claim 2
Dependent Claim
310 words
In an elongated, single lumen, balloon catheter for insertion in a body passage, the catheter including an elongated flexible support structure having distal and proximal ends that includes an elongated, flexible, coil spring means whose interior surface bounds a single, elongated, lumen of the catheter, and through which lumen a pressurizing fluid is to be selectively supplied, and with external resilient sheath means surrounding, and supported on, the exterior of the elongated coil spring means, and with an annular, inflatable, resilient balloon means also provided as part of the resilient covering of the coil spring support structure and being in fluid communication only with the catheter's lumen; the improvement comprising, in combination: the annular inflatable balloon means being located adjacent the distal end of the catheter and being sized, when deflated, to be selectively insertable with its supporting catheter structure into a selected body passage of a subject; an inflation means for said inflatable balloon being connected to the support structure adjacent the proximal end thereof that is intended to be positioned outside the body of the subject, said inflation means including a fluid containing chamber that is in communication, through said single lumen of the catheter, with the inflatable balloon located in a subject's selected body passage; said fluid containing chamber having at least one thin and flexible, deformable wall adapted to be manipulated by digital pressure supplied by the user of the catheter said chamber including means to provide direct control of the inflation pressure in the catheter's single lumen and in the balloon by manual pressure applied to said flexible wall, said thin and flexible deformable wall being also operative to provide means for tactile sensing of fluid pressure variation within the fluid containing chamber that is responsive to variations in pressure developed in the distal inflated balloon that is positioned in the body of the subject.
Claim 3
Dependent Claim
28 words
The balloon catheter of claim 1 wherein the wall of the chamber is formed of an elastomeric material and is substantially inextensible by digital pressure of a user.
Claim 4
Dependent Claim
28 words
The balloon catheter of claim 1 wherein the chamber is shaped as a flattened disc sized to fit between the thumb and an opposing finger of the user.
Claim 5
Dependent Claim
49 words
The balloon catheter of claim 1 wherein said chamber comprises; an upper surface; a lower surface; a pleated side wall secured at one end to the upper surface and at the other end to the lower surface; and said upper surface defining the at least one flexible deformable wall.
Claim 6
Dependent Claim
24 words
The balloon catheter of claim 1 wherein the thickness of the at least one flexible deformable wall is no greater than about 0.015 inch.
Claim 7
Dependent Claim
31 words
The invention of claim 4 wherein the chamber further comprises; a coil spring positioned surrounded by the side wall and arranged to bias the upper surface away from the lower surface.
References Cited (Backward Citations)
US3044468A
Cited
US3467101A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-09-29 | 1990-03-31 | 1990-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-29 | 1994-03-31 | 1994-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-29 | 1998-03-31 | 1998-09-30 | $7700.00 | Window Closed / Lapsed |