US3598127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter having antibacterial substance therein provided with means permitting slow release of said substance
Assignee: JAMES G WEPSIC
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Filing: 1968-06-06
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Granted: 1971-08-10
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Expires: 1988-06-06
Abstract
Abstract A catheter has an inner tube of nonpermeable rubber formed with V-shaped grooves extending along its length on the outside carrying antibacterial agents permeable through polysiloxane rubber that surrounds the V-shaped grooves. The antibacterial agents are permeable through the polysiloxane rubber. Upon diffusion through the polysiloxane layer the antibacterial agents help prevent infection caused by bacteria moving up the tube toward the bladder or other organ into which the catheter tube leads.
Inventors
- 👤 James G Wepsic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:19
CPC Classifications
A; A61; A61M; A61M25/00; A61L; A61L29/00; A61L29/14; A61L29/16; A61L2300/00; A61L2300/40; A61L2300/404; A61M25/0043; A61M2025/0056
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
82 words
A catheter containing an antibacterial substance for insertion into the body comprising an elongate outer hollow tube permeable to an antibacterial substance for slowly dispensing said antibacterial substance therethrough after insertion into the body, an elongate inner tube coextensive wiTh and concentric within said outer tube immediately adjacent thereto and made of material substantially nonpermeable to said antibacterial substance, and means containing said antibacterial substance positioned on the outside of said inner tube immediately adjacent to the inside of said outer tube.
Claim 2
Dependent Claim
82 words
A catheter containing an antibacterial substance for insertion into the body comprising an elongate outer hollow tube permeable to an antibacterial substance for slowly dispensing said antibacterial substance therethrough after insertion into the body, an elongate inner tube coextensive wiTh and concentric within said outer tube immediately adjacent thereto and made of material substantially nonpermeable to said antibacterial substance, and means containing said antibacterial substance positioned on the outside of said inner tube immediately adjacent to the inside of said outer tube.
Claim 3
Dependent Claim
17 words
A catheter tube in accordance with claim 1 wherein said outer tube is made of polysiloxane rubber.
Claim 4
Dependent Claim
27 words
A catheter tube in accordance with claim 2 wherein said antibacterial substance comprises a substance in the group comprising neomycin, bacitracin, sulfa, mandelamine, zepheran, hexachloraphine, and furadantoin.
Claim 5
Dependent Claim
30 words
A catheter tube in accordance with claim 1 wherein said outer tube is made of polysiloxane rubber and said inner tube is made of rubber nonpermeable to said antibacterial substance.
Claim 6
Dependent Claim
42 words
A catheter tube in accordance with claim 1 wherein said means containing said antibacterial substance comprises at least one longitudinal groove formed in said inner tube immediately adjacent to said outer tube, said antibacterial substance residing in said at least one groove.
Claim 7
Dependent Claim
27 words
A catheter tube in accordance with claim 4 wherein said antibacterial substance comprises a substance from the group comprising neomycin, bacitracin, sulfa, mandelamine, zepheran, hexachloraphine, and furadantoin.
References Cited (Backward Citations)
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Cited
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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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |