Patent US3736939A successfully refreshed from Google Patents.
US3736939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balloon catheter with soluble tip
Assignee: Kendall Co
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Filing: 1972-01-07
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Granted: 1973-06-05
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Expires: 1992-01-07
Abstract
Abstract A flexible retention catheter of the balloon inflation type is provided with an auxiliary drainage opening in the wall of the catheter, situated below the inflation balloon, and with an imperforate tip composed of a material which is soluble in body fluids. During insertion, drainage is initiated only through the auxiliary opening. Upon dissolution of the tip, the whole diameter of the lumen of the catheter becomes available for drainage.
Inventors
- 👤 G Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:24
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0067; A61M25/0068; A61M25/0069; A61M25/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
189 words
A flexible retention catheter of the balloon inflation type which comprises a flexible tubular body portion with an inflatable balloon sealed to said body near its distal end, said body portion having an open end beyond said balloon, and an imperforate distal tip portion terminating short of said balloon and composed wholly of a substance which is soluble in body fluids covering said open end, saId tubular body portion being provided with an unobstructed auxiliary drainage opening in the main wall of said body portion, said auxiliary drainage opening being directly connected to the drainage lumen of said catheter and being located near but below the point of attachment of the inflatable balloon to said body portion, whereby the open end of the tubular body portion is covered during insertion of the catheter, the unobstructed auxiliary drainage opening will permit drainage of liquid as a signal to the operator of the catheter that the balloon and distal end are properly located before the balloon is inflated, and after the balloon is inflated to secure the catheter in proper position, the imperforate tip portion is dissolved to permit normal drainage.
Claim 2
Dependent Claim
189 words
A flexible retention catheter of the balloon inflation type which comprises a flexible tubular body portion with an inflatable balloon sealed to said body near its distal end, said body portion having an open end beyond said balloon, and an imperforate distal tip portion terminating short of said balloon and composed wholly of a substance which is soluble in body fluids covering said open end, saId tubular body portion being provided with an unobstructed auxiliary drainage opening in the main wall of said body portion, said auxiliary drainage opening being directly connected to the drainage lumen of said catheter and being located near but below the point of attachment of the inflatable balloon to said body portion, whereby the open end of the tubular body portion is covered during insertion of the catheter, the unobstructed auxiliary drainage opening will permit drainage of liquid as a signal to the operator of the catheter that the balloon and distal end are properly located before the balloon is inflated, and after the balloon is inflated to secure the catheter in proper position, the imperforate tip portion is dissolved to permit normal drainage.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |