Self-locking suture anchor
First Claim
Patent Images
1. A device for anchoring a filament to tissue or bone, comprising:
- an anchor member adapted to be embedded in bone, the anchor having a cavity therein; and
a filament having a first and a second portion extending from the cavity, the filament being held in the cavity by interference fit, the filament substantially not moving in response to a tensional force less than a threshold force applied to any of the first mad second portion, the filament moving longitudinally in response to a tensional force greater than the threshold force applied to any of the first and second portion, wherein the filament has a breaking tension greater than the threshold force.
11 Assignments
0 Petitions
Accused Products
Abstract
A tissue anchor having a length of filament held so that an applied force greater than a threshold force will cause the filament to move longitudinally, while an applied force less than the threshold force will not move the filament, and methods of attaching soft tissue to bone using such an anchor.
-
Citations
23 Claims
-
1. A device for anchoring a filament to tissue or bone, comprising:
-
an anchor member adapted to be embedded in bone, the anchor having a cavity therein; and
a filament having a first and a second portion extending from the cavity, the filament being held in the cavity by interference fit, the filament substantially not moving in response to a tensional force less than a threshold force applied to any of the first mad second portion, the filament moving longitudinally in response to a tensional force greater than the threshold force applied to any of the first and second portion, wherein the filament has a breaking tension greater than the threshold force. - View Dependent Claims (2, 5, 6, 7, 8, 9)
-
-
3. A device for anchoring a filament to tissue or bone, comprising:
-
an anchor member adapted to be embedded in bone, the anchor having a cavity therein, wherein the anchor member comprises, an anchoring element for insertion into a hole in tissue, the anchoring element including an axial channel extending between proximal and distal ends thereof, the anchoring element being slidably mounted on an insertion stem, the insertion stem including a portion having a greater outer diameter than an inner diameter of the axial channel, that portion being referred to herein as the portion of the greater diameter, the insertion stem being adapted to move proximally in the axial channel to cause the portion of greater diameter to move at least partially through that channel and, thereby, to cause the anchoring element to expand to a pressure fit with the bone hole; and
a filament having a first and second portion extending from the cavity, the filament being held in the cavity by interference fit, the filament substantially not moving in response to a tensional force less than a threshold force applied to any of the first and second portion, the threshold force being less an the breaking tension of the filament, the filament moving longitudinally in response to a tensional force greater than the threshold force applied to any of the first and second portion. - View Dependent Claims (4)
-
-
10. A device for anchoring soft tissue to bone, comprising:
-
an anchor member adapted to be embedded in a bone tunnel and having a cavity therein; and
a filament having a first and a second portion extending from the cavity, the filament being held in the cavity by interference fit, the filament substantially not moving in response to a tensional force less than a threshold force applied to any of the first and second portion, the filament moving longitudinally in response to a tensional force greater than the threshold force applied to any of the first and second portion, whereby the filament can be used to secure soft tissue, wherein the filament has a breaking tension greater than the threshold force. - View Dependent Claims (11, 14, 15, 16, 17, 18)
-
-
12. A device for anchoring soft tissue to bone, comprising:
-
an anchor member adapted to be embedded in a bone tunnel and having a cavity therein, wherein the anchor member comprises, an anchoring element for insertion into a hole in tissue, the anchoring element including an axial channel extending between proximal and distal ends thereof, the anchoring element being slidably mounted on an insertion stem, the insertion stem including a portion having greater outer diameter than an inner diameter of the axial channel, that portion being referred to herein as the portion of greater diameter, the insertion stem being adapted to move proximally in the axial channel to cause the portion of greater diameter to move at least partially through that channel and, thereby, to cause the anchoring element to expand into a pressure fit with the bone hole; and
a filament having a first and second portion extending from the cavity, the filament being held in the cavity by interference fit, the filament substantially not moving in response to a tensional force less than a threshold force applied to any of the first and second portion, the filament moving longitudinally in response to a tensional force greater than the threshold force applied to any of the first and second portion, whereby the filament can be used to secure soft tissue. - View Dependent Claims (13)
-
-
19. A method of anchoring soft tissue to bone, comprising:
-
embedding an anchor member in a bone tunnel, the anchor member comprising a cavity, a filament having a first and a second portion extending from the cavity, the filament being held in the cavity by interference fit, the filament substantially not moving in response to a tensional force less than a threshold force applied to any of the first and second portion, the filament moving longitudinally in response to a tensional force greater than the threshold force applied to any of the first and second portion; and
using the filament to attach soft tissue to the bone,wherein the filament has a breaking tension greater than the threshold tension. - View Dependent Claims (20, 21, 22)
passing a portion of the filament through at least one aperture in the soft tissue; and
tightening the filament by applying a force greater than the threshold force to one portion of the filament, thereby causing it to move longitudinally.
-
-
21. The method of claim 19, wherein the threshold tension is in a range 25-35 pounds.
-
22. The method of claim 19, wherein the soft tissue is selected from the group consisting of a tendon, a ligament, a meniscus, and artificial soft tissue.
-
23. A method of anchoring soft tissue to bone, comprising:
-
embedding an anchor member in a bone tunnel, the anchor member comprising a cavity, wherein the anchor member comprises, an anchoring element for insertion into a hole in tissue, the anchoring element including an axial channel extending between proximal and distal ends thereof, the anchoring element being slidably mounted on an insertion stem, the insertion stern including a portion having a greater outer diameter than an inner diameter of the axial channel, that portion being referred to herein as the portion of greater diameter, the insertion stem being adapted to move proximally in the axial channel to cause the portion of greater diameter to move at least partially through that channel and, thereby, to cause the anchoring element to expand into a pressure fit with the bone hole;
a filament having a first and second portion extending from the cavity, the filament being held in the cavity by interference fit, the filament substantially not moving in response to a tensional force less than a threshold force applied to any of the first and second portion, the threshold force being less than the breaking tension of the filament, the filament moving longitudinally in response to a tensional force greater than the threshold force applied to any of the first and second portion; and
using the filament to attach soft tissue to bone.
-
Specification