Combined spiral reinforced bone anchor

A combined bone anchor technology, applied in the direction of nails, U-shaped nails, surgical fixation nails, etc., can solve the problems of limiting the number of anchor implants, loosening, and increasing the difficulty of operation, so as to preserve continuity and strength, Prevent loosening and slipping, simple and flexible operation

Active Publication Date: 2019-09-27
石岩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the anchors in the prior art often encounter the following problems when they are used: 1. The holding force of the anchor is weak, and the anchor is often loosened or pulled out during or after the operation, resulting in failure of fixation. Cases of osteopenia or osteoporosis; 2. When the anchors are implanted in the bone, a certain distance between the anchors needs to be kept, otherwise the fixation strength will be affected, which limits the number of anchors implanted; 3. Once the anchors occur After loosening and pulling out, it is difficult to re-implant in situ, and the anchor needs to be re-implanted at a position far away from the original hole, which not only increases the difficulty of operation, but also seriously affects the reliability of intraoperative fixation; 4. Anchor fixation more bone damage
The above-mentioned patent application designs the bone screw as a helical stru

Method used

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  • Combined spiral reinforced bone anchor
  • Combined spiral reinforced bone anchor
  • Combined spiral reinforced bone anchor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] to combine figure 1 and figure 2 As shown, a combined helical reinforced bone anchor in this embodiment includes two parts: an anchor 1 and a helical nail 2, wherein the anchor 1 includes an anchor head 1-1 and an anchor body 1-2, The anchor head 1-1 is integrated at the front end of the anchor body 1-2, the anchor head 1-1 and the anchor body 1-2 are integrally formed, and the width of the anchor head 1-1 is larger than that of the anchor body The width of 1-2 forms a stepped structure at the connection position between the anchor head 1-1 and the anchor body 1-2, and the tail of the anchor body 1-2 is provided with a thread hole 1-3 for threading the suture 3. The anchor 1 preferably adopts a flat structure, and the anchor head 1-1 is sharp, so that the anchor 1 can be driven into the pre-drilled bone hole, and the anchor 1 is easy and convenient to manufacture.

[0033]The helical screw 2 includes a helical main body, the front of the helical main body has a sharp...

Embodiment 2

[0037] combine image 3 As shown, a combined spiral-reinforced bone anchor of this embodiment has a principle similar to that of Embodiment 1, and includes two parts, an anchor 1 and a helical nail 2, wherein the anchor 1 includes an anchor head 1- 1 and the anchor body 1-2, the anchor head 1-1 is integrally arranged at the front end of the anchor body 1-2, the anchor head 1-1 is integrally formed with the anchor body 1-2, the anchor body 1- The tail part of 2 is provided with the wire hole 1-3 that is convenient for suture 3 to penetrate, and the nail piercing hole 1-4 that extends along the length direction is provided on the anchor main body 1-2, and this nail piercing hole 1-4 is preferably waist-shaped hole structure. The anchor 1 preferably adopts a flat structure, and the anchor head 1-1 is sharp, so that the anchor 1 can be driven into the pre-drilled bone hole, and the anchor 1 is easy and convenient to manufacture.

[0038] The helical screw 2 includes a helical ma...

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Abstract

The invention discloses a combined spiral reinforced bone anchor and belongs to the field of medical apparatuses and instruments. The combined spiral reinforced bone anchor disclosed by the invention comprises two parts, namely an anchor and a screwed nail, wherein the anchor comprises an anchor head and an anchor main body; the screwed nail comprises a spiral main body; the front of the spiral main body is provided with a sharp nail head, and the rear of the spiral main body is provided with a nail tail used for rotationally implanting the screwed nail. According to the combined spiral reinforced bone anchor disclosed by the invention, the anchor and the screwed nail are organically combined, the anchor is first knocked in and then the screwed nail is screwed in during use, holding force of the anchor in bones is provided by utilizing the screwed nail, the holding force is high, conditions that the bone anchor is easy to loosen during operation or after operation and the like are avoided, the stress can be effectively dispersed, and bone destruction is small. In addition, the limitation of distances and quantities of implanted anchors is small, anchor implantation density is high, and the bone anchor is particularly suitable for tendon suture fixation of patients with osteoporosis; moreover, when the anchor loosens, a larger-diameter replaced screwed nail can be implanted in situ again, and the operation is simple and flexible.

Description

technical field [0001] The invention relates to a medical bone anchor, more specifically to a combined helical reinforced bone anchor, in particular to a minimally invasive suture anchor for repairing tendon damage. Background technique [0002] Complete or partial separation of ligaments, tendons, or other soft tissues from the bone to which they are attached is a relatively common injury. Partial separations can usually be treated conservatively with satisfactory results, but complete separations require surgical treatment to complete the soft tissue repositioning of the bone. attached. A suture anchor is a miniature device used to connect soft tissues such as tendons and ligaments to bones in surgical operations. It can fix the damaged tendon stump to bone tissue to restore the normal structure and joint function of the tendon. Through tendon-bone healing final fixed purpose. [0003] The process of tendon-bone healing requires a certain contact area and firm contact st...

Claims

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Application Information

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IPC IPC(8): A61B17/064A61B17/04
CPCA61B17/0642A61B17/0401A61B2017/0408A61B2017/044A61B2017/0464
Inventor 石玥
Owner 石岩
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