Variable stiffness electrically conductive composite, resistive heating catheter shaft
June 30, 2020. 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 3928519 Hollow conductive medical tubing Catheter for guide-wire tracking Reinforced multilumen catheter for axially varying stiffness Guide wire Method and apparatus for treating vessel wall with UV radiation following angioplasty Kink-resistant braided catheter with distal side holes Sheath for a flexible fiber optic lightguide, and the lightguide Neuro-microcatheter Guidewire with a variable stiffness distal portion InventorsApplicationNo. 608497 filed on 06/30/2000US Classes:604/523, Flexible catheter or means (e.g., coupling) used therewith606/7AngioplastyExaminersPrimary: Walberg, TeresaAssistant: Fastovsky, Leonid Attorney, Agent or FirmForeign Patent References
International ClassA61M 025/00AbstractThe variable stiffness electrically conductive catheter shaft includes one or more electrically conductive members, and at least one coaxial layer of heat shrink polymer disposed over the one or more electrically conductive members of a length shorter than the one or more electrically conductive members, to provide variations in stiffness along the length of the shaft. The variable stiffness electrically conductive catheter shaft preferably includes a plurality of coaxial layers of heat shrink polymer encapsulating the one or more electrically conductive members, extending from the proximal end of the one or more electrically conductive members toward the distal end, the plurality of coaxial layers having different lengths to provide the electrically conductive catheter shaft with varying stiffness over the length of the electrically conductive catheter shaft. | |
