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Patent US20080004707A1 successfully refreshed from Google Patents.
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US4715378A Expired / Lapsed US ⏱️ 0.0 years remaining

Balloon catheter

Assignee: Boston Scientific Corp
•
Filing: 1986-07-28
•
Granted: 1987-12-29
•
Expires: 2006-07-28
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Abstract

Abstract A balloon catheter having a distal balloon, and a catheter extending from the proximal end of the balloon, out of the body, forming a conduit for balloon inflation fluid, is sized and adapted, with the balloon deflated to a relatively small size, for introduction of the balloon into the body, and the balloon is adapted to be inflated to a relatively larger size by introduction of inflation fluid into the balloon for outside the body via the conduit. The balloon catheter includes a vent disposed at the distal end of the balloon for selectively venting gas above a predetermined pressure from the interior of the balloon while restricting passage of inflation fluid from the balloon at operating pressure. The vent consists of a multi-winding coil extending distally from within the balloon, interstitial spaces generally between the windings of the coil being of a predetermined size selected to permit passage therethrough of gaseous molecules above a predetermined pressure, while restricting throughpassage of larger molecules of inflation fluid.

Inventors

  • 👤 J. Lee Pope, Jr.
  • 👤 Ronald E. Resden

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-22 22:02
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61M2025/1043; A61M2025/1077; A61M2025/1093; A61M25/1002

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 176 words
A balloon catheter, comprising: a distal balloon, and a catheter extending from the proximal end of the balloon, out of the body, forming a conduit for balloon inflation liquid, said balloon catheter sized and adapted, with said balloon deflated to a relatively small size, for introduction of said distal balloon into the body, and said balloon adapted to be inflated to a relatively larger size by introduction of inflation liquid into said balloon from outside the body, via the conduit formed by said catheter, and said balloon catheter further comprising vent means disposed at the distal end of said balloon for selectively venting gas above a predetermined pressure from the interior of said balloon and restricting passage of inflation liquid from said balloon, said vent means comprising a multi-winding coil extending distally from within said balloon, interstitial spaces generally between the windings of said coil being of a predetermined small size selected to permit passage therethrough of gaseous molecules above a predetermined pressure and to restrict throughpassage of larger molecules of inflation liquid at operating pressure.
Claim 2
Dependent Claim 176 words
A balloon catheter, comprising: a distal balloon, and a catheter extending from the proximal end of the balloon, out of the body, forming a conduit for balloon inflation liquid, said balloon catheter sized and adapted, with said balloon deflated to a relatively small size, for introduction of said distal balloon into the body, and said balloon adapted to be inflated to a relatively larger size by introduction of inflation liquid into said balloon from outside the body, via the conduit formed by said catheter, and said balloon catheter further comprising vent means disposed at the distal end of said balloon for selectively venting gas above a predetermined pressure from the interior of said balloon and restricting passage of inflation liquid from said balloon, said vent means comprising a multi-winding coil extending distally from within said balloon, interstitial spaces generally between the windings of said coil being of a predetermined small size selected to permit passage therethrough of gaseous molecules above a predetermined pressure and to restrict throughpassage of larger molecules of inflation liquid at operating pressure.
Claim 3
Dependent Claim 22 words
The balloon catheter of claim 1 further comprising a guidewire extending within said catheter, said guidewire terminating distally within the said coil.
Claim 4
Dependent Claim 20 words
The balloon catheter of claim 1 of a form suitable for use in the procedure of percutaneous transluminal coronary angioplasty.
Claim 5
Dependent Claim 67 words
The balloon catheter of claim 1 wherein said interstitial spaces are of a configuration to allow the passage of air at pressure of the order of about 50 psi, and to provide sufficient restriction to flow of inflation liquid to enable said balloon to retain dilation pressures of the order of about 8 to 10 atm for periods of the order of up to about 1 minute.

References Cited (Backward Citations)

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US3854484A Cited
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US4323071B1 Cited
US4307722A Cited
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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) 1990-12-28 1991-06-29 1991-12-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-12-28 1995-06-29 1995-12-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-12-28 1999-06-29 1999-12-29 $7700.00 Window Closed / Lapsed

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