Motor-driven medical instrument with flexible shaft
First Claim
1. A universal connector for medical instrument, comprising:
- a housing having at least two housing parts rotatable relative to one another, said housing having a proximal end adapted to receive a motor shaft, which is rotated about an axis and selected from the group consisting of a plurality of motor shafts having various axial dimensions, and a distal end adapted to receive an instrument shaft; and
a torque transmission mechanism in said housing for transmitting a torque generated by said motor shaft to the instrument shaft, said torque transmitting mechanism comprising;
a first seat mounted to the proximal end of the housing and adapted to be detachably connected to the motor shaft to rotate therewith;
a connecting element rotatably mounted between the proximal and distal ends, a flexible shaft rotatably coupled to the connecting element at one end and adapted to couple to the instrument shaft at another end, and a first helical spring braced against and rotatably coupling the first seat and the connecting element, said first seat being axially displaceable in the housing against a force generated by the first helical spring to allow for variable axial dimensions of the motor shaft.
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Accused Products
Abstract
Disclosed is a medical instrument having at least one surgical element, such as a knife or the like disposed at the distal end thereof, a motor disposed at the proximal end thereof, and a shaft which connects the shaft of the motor to the shaft of the surgical instrument in such a manner that the surgical element is rotated.
According to the invention either the motor is detachably connected to said shaft of the said surgical element in an as such known manner so that a bend can be inserted between the motor shaft and said shaft disposed in the instrument or that a flexible bend is inserted between the motor and the shaft in such a manner that the motor shaft and the shaft disposed in the instrument includes an adjustable angle.
67 Citations
7 Claims
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1. A universal connector for medical instrument, comprising:
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a housing having at least two housing parts rotatable relative to one another, said housing having a proximal end adapted to receive a motor shaft, which is rotated about an axis and selected from the group consisting of a plurality of motor shafts having various axial dimensions, and a distal end adapted to receive an instrument shaft; and
a torque transmission mechanism in said housing for transmitting a torque generated by said motor shaft to the instrument shaft, said torque transmitting mechanism comprising;
a first seat mounted to the proximal end of the housing and adapted to be detachably connected to the motor shaft to rotate therewith;
a connecting element rotatably mounted between the proximal and distal ends, a flexible shaft rotatably coupled to the connecting element at one end and adapted to couple to the instrument shaft at another end, and a first helical spring braced against and rotatably coupling the first seat and the connecting element, said first seat being axially displaceable in the housing against a force generated by the first helical spring to allow for variable axial dimensions of the motor shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification