Force-sensing catheter with bonded center strut

Details Force-sensing catheter with bonded center strut Force-sensing catheter with bonded center strut

A - Human Necessities

61

M

A61M 25/092 (2006.01) G01L 1/22 (2006.01) A61B 5/04 (2006.01) A61B 18/12 (2006.01)

Patent

CA 2678216

A force-sensing catheter for diagnosing or treating the vessels found within a body or body space includes a center strut that is bonded, preferably thermally, along its longitudinal axis with the thermoplastic tubular member within which it is housed. The tubular member preferably has three layers: an inner layer, a braided layer and an outer layer. . One or more semiconductor or metallic foil strain gages are affixed to the center strut in order to provide a measure of the bending and torsional forces on the distal tip of the catheter. Temperature compensation is achieved by having a temperature sensor near the strain gages and calibrating the catheter over a range of temperatures.

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