Clamp assembly for surgical retractor support

Claim 2

A clamp assembly comprising, in combination: a base formed to rotate on a first axis about a first rod; an elongate fitting slidably disposed in said base along a second axis normal to said first axis and formed to rotate with said base about the first rod; first and second disks slidably disposed on said fitting and independently rotatable about said second axis, one side of said first disk having a channel adjacent to said fitting defining with said base opposed surfaces for clamping a second rod therebetween, and said second disk having a channel adjacent to said fitting defining with the other side of said first disk opposed surfaces for clamping a third rod therebetween; and tightening means along said second axis operatively connected to said fitting and said disks for simultaneously fixing the rods relative to each other.

Claim 3

A clamp according to claim 1 wherein: said base includes an opening along said first axis for slidably receiving the first rod.

Claim 4

A clamp assembly according to claim 2 wherein: the depth of said channels is less than the thickness of said second and third rods.

Claim 5

A clamp assembly according to claim 2 wherein: said base includes a recess along the length of said opening; and said fitting includes a hole at one end alignable with said opening for receiving the first rod.

Claim 6

A clamp assembly according to claim 4 wherein: said tightening means includes a shank threadingly engaging the other end of said fitting.

Claim 7

A clamp assembly according to claim 1 further comprising: indexing means operatively connected to said disks for selecting one of a plurality of angular displacements therebetween, said indexing means includes a plurality of holes in one of said disks disposed to correspond with the angular displacements, and a pin fixed to and extending from the other of said disks for insertion in a selected one of said holes.

Claim 8

An improved clamp assembly for a split wishbone surgical retractor apparatus, the apparatus including a pair of retractor support rods having opposed flat sides and an operating table extension having a cylindrical cross section, the improvement comprising: a base defining a first passage formed to receive the extension for rotating about said extension on a first axis, and a second passage communicating with said first passage on a second axis normal to said first axis; an elongate fitting slidably disposed in said second passage having a third passage at one end alignable along the second axis and formed to receive the extension for rotating with said base on said first axis; a first disk disposed on said fitting and independently rotatable about said second axis, one side of said first disk having a channel adjacent to said fitting forming with said base a fourth passage for receiving one of the rods; a second disk disposed on said fitting and independently rotatable about said second axis, said second disk having a channel adjacent to said fitting forming with the other side of said first disk a fifth passage for receiving the other of the rods; and tightening means operatively connected to the other end of said fitting and said second disk for simultaneously fixing relative to each other the extension and the rods received in said assembly.

Claim 9

An improved clamp assembly for a split wishbone surgical retractor apparatus, the apparatus including a pair of retractor support rods having opposed flat sides and an operating table extension having a cylindrical cross section, the improvement comprising: a base defining a first passage formed to receive the extension for rotating about said extension on a first axis, and a second passage communicating with said first passage on a second axis normal to said first axis; an elongate fitting slidably disposed in said second passage having a third passage at one end alignable along the second axis and formed to receive the extension for rotating with said base on said first axis; a first disk disposed on said fitting and independently rotatable about said second axis, one side of said first disk having a channel adjacent to said fitting forming with said base a fourth passage for receiving one of the rods; a second disk disposed on said fitting and independently rotatable about said second axis, said second disk having a channel adjacent to said fitting forming with the other side of said first disk a fifth passage for receiving the other of the rods; and tightening means operatively connected to the other end of said fitting and said second disk for simultaneously fixing relative to each other the extension and the rods received in said assembly.

Claim 10

A clamp according to claim 7 wherein: said fourth and fifth passages are of rectangular cross section passage for preventing rotation of said rods.

Claim 11

A clamp assembly according to claim 8 wherein: a depth of said channels of said fourth and fifth passages is less than the thickness across the flat sides of said rods.

Claim 12

A clamp assembly according to claim 9 wherein: said fourth and fifth passages are disposed on opposite sides of said fitting.

Claim 13

A clamp assembly according to claim 7 wherein: said tightening means includes a shank threadingly engaging the other end of said fitting.

Claim 14

A clamp assembly according to claim 7 further comprising: indexing means operatively connected to said disks for selecting one of a plurality of angular displacements therebetween, said indexing means includes a plurality of holes in one of said disks disposed to correspond with the angular displacements, and a pin fixed to and extending from the other of said disks for insertion in a selected one of said holes.

Claim 15

A clamp assembly comprising, in combination: a base formed to slidably receive a first rod; a fitting slidably disposed in said base and formed to be slidable on said first rod; first and second disks disposed on said fitting for independent rotation about said fitting, one of said disks having a channel on one side adjacent to said fitting forming with said base opposed surfaces for clamping a second rod therebetween and the other of said disks having a channel adjacent to said fitting forming with the other side of said one disk opposed surfaces for clamping a third rod therebetween; and tightening means operatively connected to said fitting and said other disk for simultaneously securing the three rods relative to each other.

Claim 16

A clamp assembly comprising, in combination: a base formed to slidably receive a first rod; a fitting slidably disposed in said base and formed to be slidable on said first rod; first and second disks disposed on said fitting for independent rotation about said fitting, one of said disks having a channel on one side adjacent to said fitting forming with said base opposed surfaces for clamping a second rod therebetween and the other of said disks having a channel adjacent to said fitting forming with the other side of said one disk opposed surfaces for clamping a third rod therebetween; and tightening means operatively connected to said fitting and said other disk for simultaneously securing the three rods relative to each other.