US3583404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonblocking catheter
Assignee: Kendall Co
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Filing: 1969-06-23
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Granted: 1971-06-08
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Expires: 1989-06-23
Abstract
Abstract An irrigation catheter with drainage and irrigation lumens having means to prevent excessive fluid pressure buildup within a body cavity is provided. In order to avoid excessive fluid pressure in a body cavity due to blocking of the drainage lumen in an irrigation catheter, a multiplicity of fluid bypass connections is provided through the wall which separates the irrigation lumen from the drainage lumen.
Inventors
- 👤 Daniel M Mcwhorter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:46
CPC Classifications
A; A61; A61M; A61M27/00; A61M27/002; A61M27/008; A61M25/00; A61M25/0067; A61M25/0074; A61M25/0075; A61M25/10; A61M2210/00; A61M2210/10; A61M2210/1078; A61M2210/1085; A61M25/0021; A61M25/0023
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
140 words
An irrigation catheter comprising a flexible elongated tube for insertion within a body cavity having distal and proximal ends thereon and being provided with both a drainage and an irrigation lumen extending throughout the length of the tube, said drainage and irrigation lumens being provided with inlet and outlet openings sealed off from one another at the proximal and distal ends of said tube, said lumens adjoining one another and being separated from one another intermediate the said ends thereof by an intervening wall, and means providing lateral fluid communication between said lumens intermediate the ends thereof, said means comprising a multiplicity of fluid bypass connections in said intervening wall between the lumens whereby excessive fluid pressure within a body cavity due to blockage in the catheter can be avoided by diverting fluid through the bypass connections around the blockage.
Claim 2
Dependent Claim
140 words
An irrigation catheter comprising a flexible elongated tube for insertion within a body cavity having distal and proximal ends thereon and being provided with both a drainage and an irrigation lumen extending throughout the length of the tube, said drainage and irrigation lumens being provided with inlet and outlet openings sealed off from one another at the proximal and distal ends of said tube, said lumens adjoining one another and being separated from one another intermediate the said ends thereof by an intervening wall, and means providing lateral fluid communication between said lumens intermediate the ends thereof, said means comprising a multiplicity of fluid bypass connections in said intervening wall between the lumens whereby excessive fluid pressure within a body cavity due to blockage in the catheter can be avoided by diverting fluid through the bypass connections around the blockage.
Claim 3
Dependent Claim
28 words
The catheter according to claim 1 in which the bypass connections are a multiplicity of porelike openings in the wall separating the irrigation lumen from the drainage lumen.
Claim 4
Dependent Claim
42 words
The catheter according to claim 1 in which the bypass connections are a multiplicity of valvelike slits in the wall separating the irrigation lumen from the drainage lumen, said slits being normally closed but being designed to open under excess fluid pressure.
Claim 5
Dependent Claim
40 words
The catheter according to claim 1 in which the fluid bypass connections between the drainage lumen and the irrigation lumen are less resistant to fluid flow in the distal portion of the catheter than they are in the proximal portion.
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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |