Channel ligament clamp

• US 5,314,427 A
• Filed: 10/13/1992
• Issued: 05/24/1994
• Est. Priority Date: 10/13/1992
• Status: Expired due to Term

• Current Assignee: Goble E. Marlowe, Somers W. Karl
• Original Assignee: Goble E. Marlowe, Somers W. Karl
• Inventors: Goble, E. Marlowe, Somers, W. Karl
• Primary Examiner(s): Brown, Michael A.
• Application Number:
  US07/959,546
• Time in Patent Office: 588 Days
• Field of Search: 606/72, 606/73, 606/74, 606/75, 606/151, 606/154, 623/13, 623/16, 411/457, 411/458, 411/459, 411/460, 411/469, 411/470
• US Class Current: 606/232
• CPC Class Codes: A61B 17/0642 for bones, e.g. for osteosynthesis or connecting tendon to bone
• CPC Class Codes: A61B 2017/0641 having at least three legs as part of one single body
• CPC Class Codes: A61F 2/0805 Implements for inserting tendons or ligaments
• CPC Class Codes: A61F 2/0811 Fixation devices for tendons or ligaments
• CPC Class Codes: A61F 2002/0829 without deformation of anchor parts, e.g. fixation screws on bone surface, extending barbs, cams, butterflies, spring-loaded pins
• CPC Class Codes: A61F 2002/0858 Fixation of tendon or ligament between anchor and bone, e.g. interference screws, wedges
• CPC Class Codes: A61F 2002/30841 Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
• CPC Class Codes: A61F 2002/30892 parallel

Abstract

The improved channel ligament clamp of the invention is for human implantation in a surgical procedure for securing a ligament, that is either natural or prosthetic, onto a bone cortex and includes, as a clamp body, a rectangular section of a thin, flat metal material, such as titanium, with identical equal opposite edge portions of which material bent at approximately right angles forming upstanding parallel side walls. Edges of which upstanding parallel side walls are for contacting a bone surface whereto the clamp is secured to closely contain a ligament section therebetween without crushing it, and which parallel side walls are the side walls of a channel section with the flat material therebetween constituting the channel section web. Which channel section web includes a plurality of pointed end parallel pins secured thereto that extend at right angles and are parallel to clamp the side walls. Preferably four pins are employed with each arranged as a corner of a square pattern, and a hole that is preferably threaded, is formed through the web in the center of which formed square for passing a screw type connector therethrough.

Claims

1. A ligament clamp comprising, a thin flat rectangular section of a material that is suitable for human implantation, with the opposite parallel side portions of said section of material bent at approximately right angles to form identical short parallel upstanding side walls, with said parallel side walls and the material therebetween, or web, constituting a channel section, said parallel side walls of said channel section each having a smooth flat bone engaging edge and are each of a height to contain, without crushing a section of a ligament fitted therebetween;

a plurality of equal length, spaced apart pointed pins, that extend beyond said parallel side walls, each said pin secured at its base to said web in a pattern to extend parallel at right angles outwardly from said web, and parallel to said side walls; and

said web has a threaded hole formed therethrough, said pins form an array that surrounds said threaded hole, wherein said pins extend outwardly and from within said walls of said web.

2. A ligament clamp as recited in claim 1, wherein web of the channel section is square;

and four pointed pins make up the plurality of pins, with each pointed pin mounted to extend from said web as the corner of a square, and the hole formed through said web is located at the center of said square formed by said pointed pins.

3. A ligament clamp as recited in claim 1, wherein the channel section and pointed pins are formed from titanium.

4. A ligament clamp as recited in claim 1, further including tool means for mounting to the ligament clamp for positioning it onto a bone surface with a section of a ligament contained between the parallel side walls, consisting of a tool body formed as a block of metal that has an undersurface formed for engaging the top surface of the web, said tool body having a straight longitudinal hole formed therethrough from its top to its undersurface for passing a bolt type fastener on the end of a driver therethrough that is turned into the ligament clamp web threaded hole, the driver tool for positioning said ligament clamp over a ligament and is struck to drive the pins through said ligament and into a bone.