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US 10,307,152 B1Granted
High tension suture anchor
OwnerTerry Mattcheninventor
Life of this patent
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Abstract
The present invention describes a bio-medically compatible gripping device capable of radial collapse in accordance with the shrinkage of a nylon or other polymeric material cored surgical cable undergoing tension while maintaining a firm grip for prolonged periods of time. It provides a gripping device capable of maintaining a non-damaging hold on the outer surface of a slippery delicate cable under high tension for a sufficient time in which the healing process can occur.
Claims29
A bio-compatible high tension suture anchor capable of providing 2500-3500 psi over an area measuring less than 0.05 square inches, the bio-compatible high tension suture anchor comprising:
- a truncated hollow cylinder having a length and a cylindrical wall, wherein the cylindrical wall is comprised of a series of ridges and valleys parallel to the length of the truncated hollow cylinder, the series of ridges and valleys define a radial arrangement of compressive fingers comprising a set of inside fingers and a set of outside fingers, wherein each outside finger of the set of outside fingers is flanked by at least one inside finger of the set of inside fingers, and wherein the radial arrangement of compressive fingers is configured to impart radial compression on a cable inserted within a channel of the truncated hollow cylinder,
- wherein the truncated hollow cylinder further comprises an insertion end, and an exposed end opposite the insertion end, an outer conical surface and an inner conical surface,
- the outer conical surface having a first outer diameter at the insertion end, a second outer diameter at the exposed end, wherein the first outer diameter of the outer conical surface is smaller than the second outer diameter of the outer conical surface,
- the inner conical surface having a first inner diameter at the insertion end, a second inner diameter at the exposed end, wherein the first inner diameter of the inner conical surface is larger than the second inner diameter of the inner conical surface, and
- a retaining collar configured to compress the first outer diameter of the inner conical surface based on insertion of the truncated hollow cylinder within the retaining collar.
2 more elements
A suture anchor for securing bone fragments in a patient, the suture anchor comprising:
- a collet having a cylindrical body having a first end and a second end opposite the first end, the cylindrical body comprising:
- an outer surface extending between the first end and the second end;
- and
- an inner surface extending between the first end and the second end, the inner surface defining a channel and having multiple grooves, each of the multiple grooves is equiangularly spaced about a longitudinal axis of the channel and extends between the first end and the second end;
- wherein:
- the inner surface having the multiple grooves and the outer surface define a radial arrangement of compressive fingers comprising a set of inside fingers and a set of outside fingers, each outside finger of the set of outside fingers is flanked by at least one inside finger of the set of inside fingers;
- a maximum transverse dimension of the outer surface at the first end is less than or equal to a maximum transverse dimension of the outer surface at the second end;
- and
- a minimum transverse dimension of the channel at the first end is greater than or equal to a minimum transverse dimension of the channel at the second end;
- and
- a retaining collar defining a channel configured to receive the collet, the first end of the retaining collar is configured to compress the first end of the cylindrical body such that the radial arrangement of compressive fingers is configured to impart radial compression on a cable inserted within the channel of the cylindrical body when the cylindrical body is positioned within the channel of the retaining collar.
8 more elements
A bio-compatible anchor comprising:
- a collet having a central longitudinal axis, a sidewall, a first end, a second end, and a length between the first end and the second end, the sidewall having an inner surface defining a plurality of ridges and valleys extending in a direction that is parallel in at least one plane to the central longitudinal axis, the plurality of ridges and valleys define a radial arrangement of compressive fingers comprising a set of inside fingers and a set of outside fingers, wherein each outside finger of the set of outside fingers is flanked by at least one inside finger of the set of inside fingers;
- and
- a collar having a passage configured to receive at least the first end of the collet;
- and
- where the collet is configured to be inserted into the passage of the collar to compress the sidewall along the length of the collet toward the central longitudinal axis such that the radial arrangement of compressive fingers provide a pressure to a surgical cable which, in use, is disposed in a channel of the collet, the pressure being substantially equal at contact regions disposed at substantially equiangular intervals around the surgical cable, such that the pressure is substantially uniform along a majority of the length of the collet.
2 more elements
A bio-compatible anchor comprising:
- a collet having a central longitudinal axis, a sidewall, a first end, a second end, and a length between the first end and the second end, the sidewall having an inner surface defining a channel having a plurality of ridges and valleys extending in a direction that is parallel in at least one plane to the central longitudinal axis, the plurality of ridges and valleys define at least 7 radial fingers;
- and
- a collar having a passage configured to receive at least the first end of the collet;
- and
- where the collet is configured to be inserted into the passage of the collar to compress the sidewall along the length of the collet toward the central longitudinal axis to provide a pressure to a surgical cable which, in use, is disposed in the collet, the pressure being substantially equal at contact regions disposed at substantially equiangular intervals around the surgical cable, such that the pressure is substantially uniform along a majority of the length of the collet.
2 more elements
Dependencies are inferred from the claim text.