Reciprocating surgical instruments

摘要

A surgical instrument system functional in multiple orthopedic applications, including but not limited to shoulder, knee, hip, wrist, ankle, spinal, or other joint procedures. The system comprises a cutting head which includes jaw members which may be urged between open and closed positions to providing a biting or chewing action for removal of targeted tissues. The instrument system is configured to be driven by an attached hub that translates a rotational movement into a reciprocating motion to open and close the jaw members. Suction for removal of bone fragments or other tissues is provided through a suction opening.

主权项

1. A tissue removal device for being driven by a powered rotary handpiece, the tissue removal device comprising:
a longitudinal axis; a motion conversion mechanism having a rotating member; a tissue removal member having a shaft and a cutting head, the shaft coupled in sliding contact with the rotating member, the cutting head including a first jaw member coupled to a second jaw member, the cutting head actuable between an open position in which a first edge on the first jaw member is spaced apart from a second edge on the second jaw member and a closed position in which the first edge abuts the second edge in order to sever tissue between the first and second edges; wherein when the rotating member is rotated about a rotation axis, the motion conversion mechanism is configured to urge a translational motion of the shaft along the rotation axis, wherein the translational motion consists of a reciprocating translation between a first retracted position and a second extended position; and, wherein the motion conversion mechanism comprises a first cam member having a first cam surface, a second cam member having a second cam surface, wherein the second cam surface is configured to rotate relative to the first cam surface about the longitudinal axis.