US 4,786,063 A · Bone vise

Abstract

A bone vise for holding a bone or bone fragment immobile during surgery to enable a surgeon to perform desired sculpting or other operations thereon. The vise includes a planar base member with an integral threaded post upstanding from its central portion and a platform threadedly received on the post. A plurality of elongated gripper members are pivotally mounted intermediate their ends on the platform about axes which are tangent to a circle whose center lies within a bone receiving and engaging region. Each gripper member has a toothed surface at one end adjacent the bone receiving and engaging region and a cam surface at the opposite end weight biased into engagement with the base member. Rotation of the platform in one direction causes movement thereof away from the base member and enlargement of the bone receiving and holding region for insertion or removal of the bone. Rotation of the platform in the opposite direction causes movement thereof toward the base member and reduction of the bone receiving and holding region for gripping of the bone by the toothed surfaces of the gripping members. The base member may include a bearing surface with a low coefficient of friction for engagement by the cam surfaces. At least one handle member integral with the base member may be provided for lifting the base member and for maintaining the base member in a desired position.

Claims15

Dependent claims

A bone vise for releasably holding a bone to be operated upon comprising:

a base member having a substantially planar bearing surface;
platform means being a unitary member adapted to supportively receive a bone thereon to be operated upon mounted for selective movement toward and away from said bearing surface;
and
jaw means pivotally mounted on said platform means and freely engageable with said bearing surface, said jaw means movable between a first position for freely receiving the bone to be operated upon when said platform means is distant from said base member and a second position for firmly gripping the bone and preventing relative movement between the bone and said base member when said platform means is proximate to said base member.

1 more element

A bone vise comprising:

a base member having a substantially planar bearing surface;
a threaded post upstanding from said base member:
multiple jaw means for releasably receiving and gripping a bone intended to be operated upon, said jaw means including cooperating gripper members defining a centrally located bone receiving and holding region, said gripper members being movable between a first position for freely receiving the bone and a second bone gripping position;
and
including a platform member being a unitary member adapted to supportively receive a bone thereon to be operated upon threadedly engaged with said post whereby rotation of said platform member in one direction causes movement of said platform member away from said bearing surface and movement of said gripper members toward said first position and whereby rotation in the opposite direction causes movement of said platform member toward said bearing surface and movement of said gripper members toward said second position at which relative movement between the bone and said platform member is prevented.

2 more elements

Dependencies are inferred from the claim text.

Bone vise

Life of this patent

Bone vise

Life of this patent

Abstract

Claims15