US5492529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tissue necrosing apparatus and method for using same including treatment of benign prostrate hypertrophy
Assignee: Gynelab Products
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Filing: 1991-12-18
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Granted: 1996-02-20
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Expires: 2011-12-18
Abstract
Abstract A method and apparatus for necrosing tissue are disclosed. Also disclosed are a method and apparatus for treatment of urinary neck blockage and benign prostate hypertrophy. A catheter provided with a heating means and an inflatable balloon is inserted into the urethra so that the heating means is in proximity to the prostate gland and the inflatable bladder attached to the end of the catheter protrudes into the urinary bladder. The bladder is inflated in the urinary bladder to facilitate positioning of the heating means. The heating means is positioned and is then heated for a period of time sufficient to cause necrosis of the tissue lining of the prostate.
Inventors
- 👤 Robert S. Neuwirth
- 👤 Lee R. Bolduc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:51
CPC Classifications
A; A61; A61B; A61B18/00; A61B17/00; A61B17/00234; A61B2017/00238; A61B2017/00274; A61B2018/00315; A61B2018/00547; A61M; A61M2210/00; A61M2210/16; A61M2210/166
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
217 words
A method for reducing bladder neck blockage caused by a hypertrophied prostate comprising the steps of: a) providing a device for removing bladder neck blockage comprising: a tube having a proximal end and a distal end; a wire coiled around said tube attached to said distal end of said tube for heating the prostate to a temperature sufficient to effect tissue necrosis; a distendable bladder means attached to said distal end of said tube, said distendable bladder means distal to said heating means and adapted for insertion into the urinary bladder; inflating means connected to said proximal end of said tube for introducing an inflation medium into said distendable bladder means; and control means connected to said proximal end of said tube for regulating the temperature of said wire; b) inserting said distendable bladder means into the urinary bladder; c) inflating said inserted distendable bladder means with an inflation medium to an appropriate volume sufficient to increase the diameter of said distendable bladder to a diameter larger than the diameter of the urethra; d) positioning said wire so that said wire is in proximity to the prostate; and e) heating said wire to a temperature of about 150° to about 300° fahrenheit for a period of about 2 to 10 minutes to effect necrosis of the tissue.
Claim 2
Independent Claim
217 words
A method for reducing bladder neck blockage caused by a hypertrophied prostate comprising the steps of: a) providing a device for removing bladder neck blockage comprising: a tube having a proximal end and a distal end; a wire coiled around said tube attached to said distal end of said tube for heating the prostate to a temperature sufficient to effect tissue necrosis; a distendable bladder means attached to said distal end of said tube, said distendable bladder means distal to said heating means and adapted for insertion into the urinary bladder; inflating means connected to said proximal end of said tube for introducing an inflation medium into said distendable bladder means; and control means connected to said proximal end of said tube for regulating the temperature of said wire; b) inserting said distendable bladder means into the urinary bladder; c) inflating said inserted distendable bladder means with an inflation medium to an appropriate volume sufficient to increase the diameter of said distendable bladder to a diameter larger than the diameter of the urethra; d) positioning said wire so that said wire is in proximity to the prostate; and e) heating said wire to a temperature of about 150° to about 300° fahrenheit for a period of about 2 to 10 minutes to effect necrosis of the tissue.
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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) | 1999-02-19 | 1999-08-21 | 2000-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-02-19 | 2003-08-21 | 2004-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-02-19 | 2007-08-21 | 2008-02-20 | $7700.00 | Window Closed / Lapsed |