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US 5,364,400 AGranted
Interference implant
AssigneeAmerican Cyanamid Company
InventorsRichard P. Rego, Jr., Bernard J. Bourque
Life of this patent
Estimating the term…
Abstract
A surgical interference implant including an elongated body formed of a biocompatible material and having a distal end and a proximal end. The proximal end defines an element for engaging a driver, and lacks an enlarged head member. The body defines a conical region having a smooth outer surface which extends proximally along a first, distal portion of the body to enable initial linear insertion of the body into a bone tunnel. A helical thread is disposed about a second, proximal portion of the body to enable subsequent rotational insertion of the body deeper into the bone tunnel.
Claims19
A surgical interference implant comprising:
- an elongated body formed of a biocompatible material, having a distal end and a proximal end, and having a longitudinal axis extending between said distal and proximal ends;
- said proximal end defining means for engaging a driver and lacking an enlarged head member;
- said body defining a conical region having a smooth outer surface and extending proximally from said distal end along a first, distal portion of said body to enable initial linear insertion of said body into a bone tunnel between a wall of the bone tunnel and an object to be secured therein;
- a helical thread disposed about a second, proximal portion of said body to enable subsequent rotational insertion of said body deeper into the bone tunnel, said proximal portion extending from said conical region to said proximal end, and said body having a body major diameter and a body minor diameter in said second, proximal portion;
- and
- said first, distal portion being inclined at a first angle relative to said longitudinal axis, and said body major diameter and said body minor diameter of said second, proximal portion each being inclined at a second, more acute angle along a substantial length of said proximal portion.
3 more elements
A surgical interference implant comprising:
- an elongated body formed of a biocompatible material, having a longitudinal axis, and having a distal end and a proximal end;
- said proximal end defining means for engaging a driver and lacking an enlarged head member;
- said body defining a conical region having a smooth outer surface and extending proximally from said distal end along a first, distal portion of said body to enable initial linear insertion of said body into a bone tunnel;
- a helical thread disposed about a second, proximal portion of said body to enable subsequent rotational insertion of said body deeper into the bone tunnel, said helical thread extending from a proximal edge of said smooth outer surface to said proximal end of said body, and said body having a body major diameter and a body minor diameter in said second, proximal portion;
- and
- said first, distal portion being inclined at a first angle relative to said longitudinal axis, and at least one of said body major diameter and body minor diameter of said second, proximal portion being inclined at a second, more acute angle.
3 more elements
A method of securing an object within a bone tunnel, comprising:
- forming a tunnel in a bone;
- inserting an object into the bone tunnel;
- providing an interference implant including:
- an elongated body formed of a biocompatible material, having a longitudinal axis, and having a distal end and a proximal end;
- the proximal end defining an element for engaging a driver and lacking an enlarged head member;
- the body defining a conical region having a smooth outer surface and extending proximally from the distal end along a first, distal portion of the body;
- a helical thread disposed about a second, proximal portion of the body, and the body having a body major diameter and a body minor diameter in the second, proximal portion;
- and
- said first, distal portion being inclined at a first angle relative to the longitudinal axis, and at least one of the body major diameter and body minor diameter of the second, proximal portion being inclined at a second, more acute angle along a substantial length of said proximal portion;
- selecting an appropriately sized driver and connecting the driver with the element for engaging;
- linearly inserting the interference implant partially into the bone tunnel between the object and a wall of the tunnel until a portion of the helical thread lies within the tunnel;
- and
- subsequently applying torque to the driver to rotate the interference implant spirally about its longitudinal axis and cause the implant to screw deeper into the bone tunnel to secure the object within the tunnel.
10 more elements
Dependencies are inferred from the claim text.