Surgical cutting block
AssigneeZimmer, Inc.
InventorJames S. Collins
Life of this patent
Estimating the term…
Abstract
Tools or other instruments can be used by a surgeon to complete an orthopedic procedure. One tool can include a reference block and a cutting block coupled to the reference block via an adjuster. The reference block can include a body portion and a depth arm having at least one longitudinal groove extending along a side surface. The adjuster can be coupled to the cutting block and configured to move the cutting block along the depth arm. The adjuster can include a roller having an elongate body, the roller including at least one circular guide member and a turn knob positioned along the elongate body, and a resilient member having a base and at least one leg extending from the base, where the adjuster is configured to couple the cutting block to the depth arm.
Claims20
A system, comprising:
- a reference block including a body portion and a depth arm, the depth arm extending from the body portion and having at least one longitudinal groove extending along a side surface;
- a cutting block having a bore configured to receive the depth arm;
- and
- an adjuster coupled to the cutting block and configured to move the cutting block along the depth arm, the adjuster, comprising:
- a roller having an elongate body, the roller including at least one circular guide member and a turn knob positioned along the elongate body;
- and
- a resilient member having a base and at least one leg extending from the base, wherein the adjuster is configured to couple the cutting block to the depth arm.
The system of claim 6, wherein the thickness of the spacer portion is sufficient to provide a gap between a side wall of the cutting block and the extender portion.
A system, comprising:
- a reference block;
- and
- a cutting block, coupled to the reference block, having a slot, configured for guiding a cutting tool, and an adjuster, configured for moving the cutting block with respect to the reference block, the adjuster comprising:
- a roller having an elongate body, the roller including:
- at least one circular guide member;
- and
- a turn knob, the at least one circular guide member and the turn knob positioned along the elongate body;
- and
- a resilient member configured to apply a force to the roller, the resilient member including:
- a base;
- and
- at least one leg extending from the base;
- and
- a fastener configured to couple the resilient member to the cutting block.
The system of claim 18, wherein the at least one circular guide member has a first hardness and the depth arm has a second hardness, the first hardness different from the second hardness.
The system of claim 18, wherein the at least one circular guide member includes a first surface and a second surface opposite the first surface, the first surface substantially perpendicular to a longitudinal axis of the roller and the second surface forming an oblique angle relative to the longitudinal axis of the roller.
A method, comprising:
- sliding a system including a reference block, having a depth arm including a longitudinal groove, and a cutting block having an adjuster, the adjuster including an elongate body having a turn knob and a circular guide member positioned along the elongate body, over an intramedullary rod;
- and
- applying a rotational force to the turn knob to adjust a cutting depth of the cutting block, wherein the circular guide member rotates within the longitudinal groove in response to the rotational force.
The method of claim 27, further including:
- adjusting the reference block with respect to the intramedullary rod to adjust a varus/valgus angle of the cutting block;
- coupling the reference block to the intramedullary rod;
- coupling the cutting block to a bone at a particular depth and a particular varus/valgus angle;
- and
- removing the reference block from the cutting block.
Dependencies are inferred from the claim text.