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Dynamic compression type suture anchor

An anchor and dynamic technology, applied in the field of tendon repair and fixation, can solve problems such as limited pressure stability, operation failure, and anchor loosening, so as to enhance stability, facilitate tendon-bone healing, and prevent anchor loosening and dialing. out effect

Pending Publication Date: 2018-11-13
SHANGHAI SIXTH PEOPLES HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, anchors are mostly miniature anchors with a diameter of less than 3.5mm, and the pressure stability generated by the thread and bone tissue is limited.
Clinically, after the anchor is fixed, the anchor is loosened and pulled out, leading to the failure of the fixation and the failure of the operation, especially in cases of osteopenia or osteoporosis, as well as in shoulders and elbows with a large range of joint motion and strong tendon strength. Joints are more prone to

Method used

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  • Dynamic compression type suture anchor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1 Rectangular dynamic compression type suture anchor

[0031] like figure 1 As shown, the rectangular dynamic compression suture anchor includes two parts: a rectangular anchor main body 1 and a rectangular dynamic compression plug 2 . The rectangular anchor body 1 has an integrated structure, and both the front view and the top view are rectangular structures. like figure 2 As shown, the height of the main body of the rectangular anchor a > the long diameter b of the cross-section of the main body of the rectangular anchor, the height of the main body of the rectangular anchor is 8-12 mm, preferably 10 mm; the long diameter of the cross-section of the main body of the rectangular anchor is 1.8-3.5 mm, Preferably 2.5 mm. like image 3 As shown, the long diameter b of the cross section of the rectangular anchor main body in the plan view>the short diameter c of the cross section, and the short diameter length of the cross section is 1.2-2.5mm, preferably ...

Embodiment 2

[0034] Embodiment 2 Cylindrical dynamic compression type suture anchor

[0035] like Figure 4 As shown, the cylindrical dynamic compression suture anchor includes two parts: a cylindrical anchor body 3 and a cylindrical dynamic compression plug 4 .

[0036] The cylindrical anchor body 3 is an integrated structure, including a cylindrical anchor head 31, a cylindrical anchor body 32, a cylindrical anchor tail 33, a cylindrical dynamic pressure groove 34, and a cylindrical anchor thread Section 35. The diameter of the cylindrical anchor body 3 is 1.8-3.5 mm, preferably 2.5 mm, and the height is 8-12 mm, preferably 10 mm.

[0037] like Figure 4 As shown, the cylindrical anchor head 31 is located below the cylindrical anchor body 3 and occupies 1 / 5-1 / 3, preferably 1 / 4, of the height of the cylindrical dynamic pressure suture anchor body. The cylindrical anchor body 32 is located between the head and the tail of the cylindrical anchor, and its height accounts for 1 / 3-3 / 5 of t...

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Abstract

The invention discloses a dynamic compression type suture anchor. The dynamic compression type suture anchor comprises an anchor body part and a dynamic compression bolt part. The anchor body part comprises an anchor head, a body, a tail, a dynamic compression groove and a threaded part; the dynamic compression bolt part comprises a dynamic compression bolt body and a suture fixing hole. By meansof the dynamic compression type suture anchor, in the muscle tendon suture and fixing process, the dynamic compression bolt slides from the far end to the near end so as to make the anchor body applypressure to the side, and the intra-bone fixing strength of the anchor is enhanced; when a joint moves, the tensile stress of a muscle tendon is converted to the pressure stress of the anchor to the bone tissue, and the adverse events that the anchor becomes loose or is pulled out when fixed can be effectively prevented. The dynamic compression type suture anchor is suitable for suture and fixingof all bone tissue with injured tendons, and especially suitable for suture and fixing of the tendons of patients who suffer from osteoporosis.

Description

technical field [0001] The invention belongs to the technical field of orthopedic medical devices, in particular to a minimally invasive suture anchor for repairing tendon damage, and is especially suitable for repairing and fixing tendons in patients with osteopenia or osteoporosis. Background technique [0002] Periarticular tendon and ligament injuries are common injuries in orthopedics. Suture anchors are often used clinically to fix the injured tendon stump to bone tissue to restore the normal structure of the tendon and joint function, and achieve the final fixation through tendon-bone healing. [0003] The process of tendon-bone healing requires a certain contact area and firm contact stability between the tendon and the rough surface of the bone end. Therefore, the fixation strength of the anchor in the bone is the key and basis for the success of the operation. [0004] Most of the suture anchors currently available in the market are provided with a threaded struct...

Claims

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Application Information

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IPC IPC(8): A61B17/04
CPCA61B17/0401A61B2017/0408A61B2017/044
Inventor 柴益民陈道运何耀华
Owner SHANGHAI SIXTH PEOPLES HOSPITAL
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