Remotely steered catheterization device
Patent 5415633 Issued on May 16, 1995. Estimated Expiration Date: 
July 28, 2013. 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.
July 28, 2013. 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 ReferencesMedical tube to be inserted in body cavity Steerable catheter Steerable angioplasty device Device for guiding medical catheters and scopes Variable shape guide apparatus Flexible guide having two-way shape memory alloy 5238005 Catheter for ice mapping and ablation Patent #: 5281213 InventorsApplicationNo. 098205 filed on 07/28/1993US Classes:604/95.05, Having remote control for applying light, electricity, or heat to alter conduit shape (e.g., shape memory alloy, etc.)600/434, Catheter guide means600/585Flexible catheter guideExaminersPrimary: Rosenbaum, C. FredAssistant: Tsosie, Bryan L. Attorney, Agent or FirmInternational ClassA61M 037/00AbstractA remotely steerable guidewire, catheter or insertable active implement is disclosed. A steerable guidewire or a catheter for coronary and peripheral catheterizations is illustrated, using smart materials such as piezoelectrics for controlling its motions inside the body via control inputs applied from outside the body. A steerable portion of the device, which may be either an active flexible tip or an active region along the length of the implement, controls the shaft position or modifies its stiffness. In one embodiment, manipulation of electrical control inputs permits deflection of the steerable region through a range of motion about the axis of the implement in a single plane. In further embodiments, the tip may deflect in multiple planes about its longitudinal axis, or the catheter may be selectively stiffened to assume an arc shape or to firmly lodge the tip in position in a vessel.Other References
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