Patent ID: 11937842
Assignee: GYRUS ACMI, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 10:
11. A medical device for surgically removing tissue, comprising:
a hand piece; and
a blade assembly removably attachable to the hand piece, the blade assembly including:
a rotatable resection member configured to rotate and surgically remove tissue from a target tissue site;
a coupling assembly including a blade assembly locking member configured to:
detachably couple the blade assembly to the hand piece;
operatively enable or disable a rotation of the blade assembly relative to the hand piece, the rotation of the blade assembly causing a change in rotating angle of the blade assembly relative to the hand piece; and
secure the rotating angle of the blade assembly;

an outer tube; and
an inner tube housed within the outer tube and rotatable relative thereto, the inner tube having a resection window to expose the rotatable resection member, wherein the resection window and the rotatable resection member cooperate to shear tissue extending into the resection window;

wherein the blade assembly locking member comprises:
a body;
at least one graspable tab attached to the body; and
an end portion extending from the body, the end portion configured (1) to be operatively received in one of a plurality of locking recesses circumferentially located on a tubular housing portion of the hand piece to disable a rotation of the blade assembly relative to the hand piece and to secure the blade assembly at a specific rotating angle relative to the hand piece, and (2) to be operatively disengaged from the one of the plurality of locking recesses to enable the rotation of the blade assembly and to change the rotating angle of the blade assembly relative to the hand piece;
wherein the coupling assembly includes a first rotatable hub configured to be manually activated to cause the change in rotating angle of the blade assembly relative to the hand piece, the first rotatable hub configured to be coupled to the outer tube of the blade assembly, wherein a rotation of the first rotatable hub causes a rotation of the outer tube to cause the change in rotating angle of the blade assembly relative to the hand piece; and
wherein the coupling assembly further includes a second rotatable hub coupled to the inner tube of the blade assembly, wherein a rotation of the second rotatable hub causes a rotation of the inner tube and a change in an orientation of the resection window with respect to the target tissue site.