Straightening device for flexible tubular structures
Patent 4928669 Issued on May 29, 1990. Estimated Expiration Date: 
June 26, 2009. 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.
June 26, 2009. 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 References 3547103 3847140 3854473 Medical instrument attached to an endoscope Variable stiffness guide wire Remote controlled guide for a catheter Patent #: 4732163 InventorApplicationNo. 371311 filed on 06/26/1989US Classes:600/144, With adjustable rigidity600/585Flexible catheter guideExaminersPrimary: Grieb, William H.International ClassA61B 001/00AbstractA straightening device for endoscopic instruments or the like, the device having an elongated cable provided with a shoulder adjacent its distal end, an elongated, normally flexible non-compressible, coiled wire sheath surrounding the cable in sliding contact therewith, the coils of the sheath normally contacting each other, the distal end of the sheath being in abutment with the distal shoulder of the cable, a bearing block having a bore non-rotatably, slidably receiving a proximal end portion of the cable, stop on the bearing block in abutment with the proximal end of the sheath, and a power generating element adapted to forcibly engage the bearing block and the proximal end portion of the cable to place the cable in tension and apply straightening force to the sheath. | |
