US5047028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for inducing thrombosis in blood vessels
Assignee: Individual
•
Filing: 1990-05-03
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Granted: 1991-09-10
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Expires: 2010-05-03
Abstract
Abstract Method of employing a balloon tube for creating a thrombosis of vessels located directly under the surface of a body cavity which is difficult to reach, through the initiation of an electric current between the balloon which is deflated as introduced into the body cavity and which is inflated by introducing a fluid on the spot and an outside electrode. The fluid which is used to inflate the balloon is electrically conductive and the balloon wall is semi-permeable for the fluid.
Inventors
- 👤 Quinghua Qian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:26
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1492; A61M16/00; A61M16/04; A61M16/0475; A61M16/0477; A61M16/0481; G; G02; G02B; G02B5/00; G02B5/12; A61B17/00; A61B17/00234; A61B2017/00292; A61B2018/00053; A61B2018/00059; A61B2018/00065; A61B2018/00184; A61B2018/00196; A61B2018/00214; A61B2018/0022; A61B2018/00315; A61B2018/00482; A61B2018/00488; A61B2018/00494
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
99 words
Method for creating a thrombosis in a blood vessel located directly under the surface of a body cavity which is difficult to reach comprising inserting a deflated balloon containing a cylindrical tube into the body cavity, the tube having openings to the balloon, inflating the balloon by introducing an electrically conductive fluid into the tube, the balloon having an exterior wall semi-permeable to the fluid, contacting a conductive wire to the conductive fluid to provide a connection to an electrode outside the body and initiating an electric current between the balloon and the electrode located outside the body cavity.
Claim 2
Dependent Claim
99 words
Method for creating a thrombosis in a blood vessel located directly under the surface of a body cavity which is difficult to reach comprising inserting a deflated balloon containing a cylindrical tube into the body cavity, the tube having openings to the balloon, inflating the balloon by introducing an electrically conductive fluid into the tube, the balloon having an exterior wall semi-permeable to the fluid, contacting a conductive wire to the conductive fluid to provide a connection to an electrode outside the body and initiating an electric current between the balloon and the electrode located outside the body cavity.
Claim 3
Dependent Claim
26 words
The method according to claim 1 wherein a wire is inserted through the cylindrical tube and is connected to the electrode located outside the body cavity.
Claim 4
Dependent Claim
14 words
The method according to claim 2 wherein the wire inserted is made of platinum.
Claim 5
Dependent Claim
14 words
The method according to claim 3 wherein the fluid introduced is normal saline solution.
Claim 6
Dependent Claim
14 words
The method according to claim 2 wherein the fluid introduced is normal saline solution.
Claim 7
Dependent Claim
14 words
The method according to claim 1 wherein the fluid introduced is normal saline solution.
Claim 8
Dependent Claim
19 words
The method according to claim 6, the method further comprising a step of adding a medicament to the fluid.
Claim 9
Dependent Claim
19 words
The method according to claim 1, the method further comprising a step of adding a medicament to the fluid.
Claim 10
Independent Claim
73 words
An apparatus for inducing thrombosis in hard to reach blood vessels within a living body comprising a cylindrical tube having multiple lateral passageways, an electrically conductive fluid located within the tube, a balloon having a membrane wall semipermeable to the fluid surrounding a portion of the cylindrical tube containing the passageways, a counter electrode adapted to be located outside the body and an electrically conductive wire electrically connecting the fluid and the electrode.
Claim 11
Independent Claim
73 words
An apparatus for inducing thrombosis in hard to reach blood vessels within a living body comprising a cylindrical tube having multiple lateral passageways, an electrically conductive fluid located within the tube, a balloon having a membrane wall semipermeable to the fluid surrounding a portion of the cylindrical tube containing the passageways, a counter electrode adapted to be located outside the body and an electrically conductive wire electrically connecting the fluid and the electrode.
Claim 12
Dependent Claim
13 words
An apparatus according to claim 9 wherein the fluid is normal saline solution.
Claim 13
Dependent Claim
20 words
An apparatus according to claim 9 wherein the wire is made of platinum and the fluid is normal saline solution.
Claim 14
Dependent Claim
14 words
An apparatus according to claim 11 wherein a medicament is present in the fluid.
Claim 15
Dependent Claim
14 words
An apparatus according to claim 9 wherein a medicament is present in the fluid.
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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) | 1994-09-09 | 1995-03-11 | 1995-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-09 | 1999-03-11 | 1999-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-09 | 2003-03-11 | 2003-09-10 | $7700.00 | Window Closed / Lapsed |