Musculoskeletal Transplant Foundation

Snap-on Inc.

Anton J Steiner

Arthur A Gertzman

Paul J Mulhauser

Karl Dallas Kirk, Iii

Gregory C Fanelli

James Shock

David I Knight

Richard J Cosenza

Robert A Winquist

Eric Semler

Barbara L Merboth

Judith I Yannariello-Brown

John E Barker

Michael Schuler

David A Landspurg

The invention is directed toward a surgical kit having component parts capable of use to prepare a cartilage implant plug from allograft condyle. The kit comprises a sizing gauge used to measure surface of the allograft condyle so that a cartilage implant plug can be removed that corresponds to the contours of the defect site excised on a patient. An adjustable guide member is mounted in a fixed orientation over the allograft condyle in which a cylindrical graft cutter for cutting a cylindrical allograft bone plug having a cartilage cap and a bone end portion. A chamfering tool is used for chamfering the bone end of the allograft bone plug.

Surgical allograft bone plug cutting tool assembly and method of using same

The invention is directed toward a method and instrumentation to replace a damaged human knee joint meniscus with an allograft meniscus. The implant has its bone base cut to a desired width in a workstation. The finished base is measured in the sizing groove of the sizing block for width and length. The tibia is then drilled with drill to the appropriate depth and length and groove is formed in the tibia with a tissue chisel so that the width is the same as the width of the bone base. The bone base is press fit into the tibia groove and may be secured with a bone screw.

Instrumentation and method for repair of meniscus tissue

The invention is directed toward a surgical kit having component parts capable of use in excising a cartilage defect site on a patient to prepare the same for receipt of an implant plug, the kit comprising a cylindrical gauge with a central bore used to measure the defect area, a guide rod adapted to be driven through the gauge tube into the center of said defect area and a cartilage cutting assembly adapted to be mounted over the guide rod and used for excising the defect area and cutting a cylindrical bore into the defect area. The method for use of the kit comprises the steps of: marking the defect area to be cut; placing a guide rod into the center defect area and driving the same to a predetermined distance to secure the same in the defect area and placing a drill bit over the guide rod and rotating the drill bit to cut a cylindrical blind bore removing the cartilage defect.

Surgical bone cutting assembly and method of using same

A sterile implant for treatment of a spinal disc defect comprising an allograft cortical bone demineralized to a Type I collagen having a specific shape which is treated to eliminate osteoinductivity. The implant is lyophilized and compressed into smaller first shape which 20 to 80% from its original shape in at least one dimension and hardened. The implant expanding when hydrated into a second shape having the shape memory of the first shape and expanded in dimensional size from the first compressed shape.

Vertebral disc repair

A portable surgical workstation for implant formation comprising a base with a central planar section. The central planar section has a plurality of tracks and a throughgoing slot with a recessed stepped surrounding surface formed on a bottom surface of the central planar section. A vise assembly mounted to the base comprises a fixed jaw member secured to the base, a traveling jaw member moveably mounted to the base and a fixed drive housing mounted to the base. The traveling jaw member has a plurality of rail members adapted to be slidably mounted in the central planar section tracks. The fixed drive housing has a threaded longitudinal bore which receives a threaded drive shaft, one end of the drive shaft being secured in the traveling jaw member to transport the traveling jaw member.

Osteochondral allograft cartilage transplant workstation

A portable surgical workstation for implant formation comprising a base with a central planar section. The central planar section has a plurality of tracks and a throughgoing slot with a recessed stepped surrounding surface formed on a bottom surface of the central planar section. A vise assembly mounted to the base comprises a fixed jaw member secured to the base, a traveling jaw member moveably mounted to the base and a fixed drive housing mounted to the base. The traveling jaw member has a plurality of rail members adapted to be slidably mounted in the central planar section tracks. The fixed drive housing has a threaded longitudinal bore which receives a threaded drive shaft, one end of the drive shaft being secured in the traveling jaw member to transport the traveling jaw members.

Allograft implant workstation

The invention is directed toward a bone-tendon-bone assembly extended between two shaped cancellous bone blocks and a method of inserting same in a joint. Each substantially cylindrically shaped cancellous bone block has a central through going bore, a flat exterior longitudinal surface and a channel longitudinally cut in the exterior of the bone block body opposite the flat longitudinal surface. A tendon replacement member is inserted through the central through going bore around the end of each block and looped back along the flat longitudinal side with each block being in a reversed orientation position as to the other block. A channel cut in the exterior surface of each block is adapted to receive an interference screw to keep the block anchored in a bone tunnel previously cut in the respective bones of a joint.

Bone-tendon- bone assembly with cancellous allograft bone block

The invention is directed toward a bone block, a bone-tendon-bone assembly and method of tendon reconstruction in which at least one tendon replacement is extended between two bone blocks and fixed within each of two bone tunnels in the bones of a joint using interference screws. Each bone block has a central through going bore and at least one substantially parallel channel longitudinally cut in the exterior of the bone block body in which the ligament replacements are seated. One end of each bone block has a rounded recess leading from the central bore to the exterior parallel channel.

Bone tendon bone assembly

Method for inserting improved bone tendon bone assembly with allograft bone block

Bone tendon bone assembly with cylindrical allograft bone block

Bone tendon bone assembly with allograft bone block

Bone-tendon-bone assembly with allograft bone block and method for inserting same

The invention is directed toward a cancellous bone block assembly with at least one tendon replacement member being extended between two shaped cancellous bone blocks. Each substantially cylindrically shaped cancellous bone block has a central through going bore, a flat exterior longitudinal surface and a channel longitudinally cut in the exterior of the bone block body opposite the flat longitudinal surface. The tendon replacement member is inserted through the central through going bore around the end of the block and looped back along the flat longitudinal side where it is tied to the back of the tendon loop. A channel cut in the exterior surface is adapted to receive an interference screw to keep the block anchored in a bone tunnel previously cut in the respective bone.

Bone-tendon-bone assembly with cancellous allograft bone block

A suture anchor comprising a cylindrical body portion with in inwardly tapered distal end portion has a screw thread extending along the cylindrical body portion and a plurality of parallel longitudinal grooves cut into the cylindrical body interrupting opposed portions of the screw thread. A suture cavity is transversely cut through the distal end portion and engages the plurality of longitudinal grooves, the suture cavity being dimensioned to hold at least one suture. The distal end portion defines a suture pathway comprising two separated leg members, each of which has an inner angled end surface leading into the suture cavity providing an entry passageway for a suture into the suture cavity and a driver for the suture anchor.

Suture anchor

A medullary reaming system includes a flexible, hollow, tubular shaft formed of a nickel-titanium alloy having one end coupled to a rotary drive and having the other end coupled to a cutting head by means of a male connector on the shaft engageable in a female connector on the head. The female connector is a tubular shank with diametrically opposed slots in the outer surface thereof, while the male connector has flexible arms with latch tabs engageable in the slots to latch the head to the shaft. A support has a plurality of notches for respectively storing cutting heads. The head shank is received in the notch with the notch edges received in the shank slots, so that when the male connector on the shaft is inserted into the shank the notch edges prevent latching of the head to the shaft until the head is removed from the support.

Growing community of inventors

Wharton, NJ, United States of America

Anton J Steiner