Indwelling urethral catheter system and method
Patent 4946449 Issued on August 7, 1990. Estimated Expiration Date: 
August 7, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 7, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorApplicationNo. 943014 filed on 12/18/1986US Classes:604/256, Having flow closing or opening means (e.g., plug, cap, seal, etc.)604/34, Deformable occluding tube valve604/101.05, Axially spaced balloons604/919Multiple balloon catheters [A61M 25/10D]ExaminersPrimary: Pellegrino, Stephen C.Assistant: DeFranco, Denise W. Attorney, Agent or FirmInternational ClassA61B 019/00AbstractAn indwelling urethral catheter system and method of its use involve a drainage shaft (16) mounted in a urinary tract (24) having an externally-operated, normally-closed, fluid valve (38) mounted therein near the meatus (22) of the urinary tract. A removable insertion conduit assembly (12), separate from the catheter drainage shaft, is for extending from outside the body, through the meatus of the urinary tract to plug into the proximal end of the catheter drainage shaft and impinge on the valve for holding it open to allow free drainage through the valve. Once the insertion conduit is removed from the urinary tract it no longer impinges on the valve for holding it open and the valve is thereafter normally closed unless opened by application of force from outside the body.Field of SearchHaving flow closing or opening means (e.g., plug, cap, seal, etc.)Having fluid responsive means (e.g., check valve, etc.) Conduit deforming clamp Nozzle insertable into body orifice Material introduced into and removed from body through passage in body inserted means Flow control Deformable occluding tube valve | |
