Rotational atherectomy systems and methods with shock absorbing element

A technology of shock absorption element and extension element, which is used in surgical cutting instruments, medical science, surgery, etc., and can solve problems such as patient or device damage
CN106102604AInactive Publication Date: 2016-11-09CARDIOVASCULAR SYST INC
11 Cites 2 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CARDIOVASCULAR SYST INC
Publication Date
2016-11-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

A rotational atherectomy system may include a drive shaft, a motor, and a clutch with a threshold torque where the clutch may include a motor plate rotationally connected to the motor, a drive shaft plate rotationally connected to the drive shaft, and a biasing clutch configured to rotationally engage the motor plate and the drive shaft plate, wherein torques less than the threshold torque are transmitted completely between the motor plate and the drive shaft plate, which remain rotationally coupled by static friction, and wherein torques greater than the threshold torque cause the motor plate and the drive shaft plate to rotate relative to one another and cause a residual torque to be transmitted between the motor and the drive shaft, the residual torque being less than the threshold torque and being determined by a kinetic coefficient of friction.
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Description

[0001] inventor

[0002] Joseph Higgins, US citizen, living in Minnetonka, MN

[0003] Jeffrey Allen McBroom, US citizen, living in Champlin, MN

[0004] Cross References to Related Applications

[0005] This application is a continuation of U.S. Patent Application 14 / 208,478, filed March 13, 2014, which claims application filed on January 28, 2014, entitled "Apparatus, system, and method for a shock-absorbing drive system for a medical device (device , systemsts and methods for a shock absorbing drive system for medical devices)" U.S. Provisional Patent Application 61 / 932409, and filed March 15, 2013 entitled "Rotational atherectomy device with biasing clutch clutch)”, the contents of which are hereby incorporated by reference in their entirety.

[0006] Statement Regarding Government Sponsored Research or Development

[0007] Not applicable technical field

[0008] The present invention relates to devices and methods for removing tissue from bodily passages, such as ath...

Claims

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