CN205094526U - Shoulder sleeve of area direction function is restoreed with implanting body - Google Patents

Abstract

The utility model relates to an implantation body of human rupture of tendon restoration and reconstruction. The device's main part appearance is the cylinder, can wait to repair the tendon through the accurate direction of front end chute, fixes in the bone prebored hole through the resistance to plucking play pawl structure of middle -end and tail end simultaneously, and it provides the mechanics support to laminate again for the tendon on the cortex bone. The device front end chute uses the ke shi needle to be slided to the bone prebored hole by external as the guide rail, plays the fixed action to the stylolite promptly through the inflation extrusion after the prebored hole of implantation bone, need not the complicated manual process of tiing a knot. Implant the cooperation use of personally experiencing sth. Part of the body through three and form the triangle -shaped overall arrangement with the stylolite, make the fracture tendon press on the cortex bone of need binding, and then play the effect of restoration fracture tendon.

Description

A kind of shoulder sleeve repair implant of tape guide function

Technical field

This utility model relates to Design for Medical Device and production technical field, particularly relates to a kind of implant repaired for human body tendon rupture and rebuild.

Technical background

Rotator cuff injury mainly contains three reasons: 1. wound 2. blood supplies less than the chronic impact damage of 3. shoulder.

The shoulder sleeve applied at present is repaired implant and is distinguished from material, mainly titanium and peek material.Distinguish and comprise " band wing formula ", " screw-type ", " bolt-button type " from version, " expansion type " is several.There are some shortcomings in titanium (titanium) alloy embedded material conventional in the market: (1) titanium alloy differs larger with body bone tissue elastic modelling quantity, mechanics incompatible (2) implant surface biological activity is not good, be unfavorable for that (3) anti-wear performance poor (4) corrosion resisting property of growing into of osseous tissue has much room for improvement, the corrosion resisting property of metal material will directly have influence on the biocompatibility of material, owing to there is chloride ion and protein in human body environment, all metals and alloy all can be corroded when contacting body fluid, various chemical reaction can be there is at implant surface.The mechanical strength of Peek material is high, and elastic modelling quantity is close with cortical bone, and creep compliance is low, and inertia is high, and biocompatibility is outstanding, resistance to chemical attack, but the processing technique of peek material requires higher.

Holdfast product in the market does not have the guide function after entering human body, and the fixing needs knotting process that most of holdfast is last, this sequence of operations improves the complexity of operation, adds the time of operation, extends doctor and grasps the cycle.

Utility model content

In order to overcome above-mentioned the deficiencies in the prior art, this utility model provide a kind of easy-to-use, safely and effectively shoulder sleeve repair implant.

The technical scheme that this utility model adopts is:

A kind of shoulder sleeve repair implant of tape guide function, it is characterized in that, the entity be connected with middle-end cylinder, trailing cylindrical for circular cone is formed, described circular cone is positioned at the front end of described implant, described cylinder is positioned at middle-end and the tail end of described implant, described implant has the oblique skewed slot running through described circular cone and part middle-end cylinder, and the resistance to plucking that described cylinder has middle-end and tail end goes out pawl structure.

And the front end circular cone skewed slot of described implant and vertical direction angulation are 5 ° ~ 30 °.

And the front end circular cone skewed slot width of described implant is 1mm ~ 1.5mm.

And the range of taper of the front end circular cone of described implant is 23 ° ~ 27 °.

And the diameter range of the middle-end cylinder of described implant is 4.2mm ~ 5.0mm.

And the diameter range of the trailing cylindrical of described implant is 4.6mm ~ 5.4mm.

And the middle-end cylinder of described implant is 0.3mm ~ 0.5mm to the reducing of trailing cylindrical.

And described implant middle-end cylinder is the elongated hole of 1.5mm ~ 2mm, long 1.5mm ~ 2.5mm with diameter, and the effect of elongated hole is the company's of wearing stitching thread, and then by stitching thread, shoulder sleeve is closely pressed on head of humerus.

And the width that the resistance to plucking of described implant middle-end cylinder goes out pawl is 0.25mm ~ 0.45mm, and angle is 30 ° ~ 60 °, the width that the resistance to plucking of trailing cylindrical goes out pawl is 0.5mm ~ 0.7mm, and angle is 30 ° ~ 60 °.

And described implant trailing cylindrical has a diameter be the internal thread hole of 1.0mm ~ 2.0mm, screwed hole hole depth is 2.0mm ~ 4.0mm.

Compared with prior art, the beneficial effects of the utility model are:

1, this implant is owing to having the conical socket of guide-localization, not only can make implant effective positioning work slideway Kirschner wire in implantation process, cone point can also be utilized effectively to break through tendon to be repaired and then be implanted in the prebored hole of bone, bone prebored hole is directly located compared to holdfast, such design can allow doctor under arthroscope, more easily complete the operation of location bone prebored hole, complete to break through tendon and locate bone prebored hole and synchronously carry out, thus the time of operation can be saved, reduce patient suffering and medical expense.

2, this implant is compared to other expansion type holdfast, its structure tail end has reducing, and according to operation standard, holdfast is implanted rearward end completely and should be in cortical bone, and tail end reducing adds extruding between holdfast and prebored hole inwall and friction, improve holdfast implant after resisting pull out forces.

3. this implant adopts the fixing stitching thread mode of unknotted, and the space formed by tail end pawl, can be squeezed in stitching thread between space and prebored hole inwall, is equivalent to stitching thread to pin, and realizes sutural fixing, eliminates complicated knotting process.

Accompanying drawing explanation

Fig. 1 is structural front view of the present utility model;

Fig. 2 is the half-sectional view of Fig. 1;

Fig. 3 is the upward view of Fig. 1;

Fig. 4 is the top view of Fig. 1;

Fig. 5 is cone point flume structure schematic diagram of the present utility model;

Detailed description of the invention

Further illustrated this utility model by specific embodiment below in conjunction with accompanying drawing, following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.

As Figure 1-Figure 5, a kind of shoulder sleeve repair implant of tape guide function, the entity be connected with middle-end cylinder 2, trailing cylindrical 3 for circular cone 1 is formed.Skewed slot 11 and the vertical direction angulation of circular cone 1 are 5 ° ~ 30 °.The width of circular cone skewed slot 11 is 1mm ~ 1.5mm.

The range of taper of circular cone 1 is 23 ° ~ 27 °.The diameter range of middle-end cylinder 2 is 4.2mm ~ 5.0mm.The diameter range of trailing cylindrical 3 is 4.6mm ~ 5.4mm.The reducing of middle-end cylinder 2 to trailing cylindrical 3 is 0.3mm ~ 0.5mm.

And described middle-end cylinder resistance to plucking goes out pawl 21 and horizontal direction angulation scope is 30 ° ~ 60 °, the width that middle-end cylinder resistance to plucking goes out pawl 21 is 0.25mm ~ 0.45mm, it is 30 ° ~ 60 ° that trailing cylindrical resistance to plucking goes out pawl 31 with horizontal direction angulation scope, and it is 0.5mm ~ 0.7mm that trailing cylindrical resistance to plucking goes out pawl width.

The middle-end cylinder 2 of this implant there is length range 1.5mm ~ 2.5mm, the elongated hole 22 of width range 1.5mm ~ 2.0mm; Trailing cylindrical 3 there is diameter range 1.0mm ~ 2.0mm, the internal thread hole 32 of depth bounds 2.0mm ~ 4.0mm.

Following example illustrates this implant making step.

1, a mould is made in conjunction with this utility model patent requirements, raw material is inserted in the 304# stainless steel mould of preheating, after matched moulds by forcing press by compaction die, mould was soaked 10 minutes after 20 minutes by natural cooling in room temperature water, bar takes out by taking-up mould, die sinking, by lathe, circular cone 1, middle-end cylinder 2, trailing cylindrical 3 and middle-end cylinder resistance to plucking are gone out pawl 21 afterwards, trailing cylindrical resistance to plucking goes out agnail 31 car and go out, milled out by the skewed slot 11 of milling machine by threading elongated hole 22, circular cone 1, got out by the internal thread hole 32 of drilling machine by trailing cylindrical C.

2, double-layer sterile packaging is adopted, and radiation sterilization, adopt the appropriate size of this implant for the repair and reconstruction of human body shoulder sleeve.

Following example illustrates the Clinical practice step of implant.

1, first with operating forceps, the tendon of fracture is stretched to position to be repaired, navigates on cortical bone with the tendon of Kirschner wire by fracture afterwards.

2, using Kirschner wire as guide rail, hole making drill is navigated to pre-drilled cavity position, knock hole making drill tail end with hand-mallet until the front end position line of hole making drill just enters into cortical bone afterwards, take out hole making drill.

3, be connected putting on the screw thread of sutural implant by tail end with implantation device, using Kirschner wire as guide rail, implant is navigated to the position of perforate, knock the tail end of implantation device until implant enters in perforate completely with hand-mallet afterwards, complete the implantation work of first implant.

4, according to the method in step 3, remaining two implants are implanted to corresponding position, make to form a triangular structure by stitching thread between three implants, and then the tendon of fracture is pressed on cortical bone.

Claims (8)

1. the shoulder sleeve repair implant with guiding positioning function, the entity that this implant is connected with cylinder for circular cone is formed, described circular cone is positioned at the front end of described implant, described cylinder is positioned at middle-end and the tail end of described implant, described implant has the oblique skewed slot running through described circular cone and part middle-end cylinder, and described cylinder has resistance to plucking goes out pawl structure.

2. implant according to claim 1, the body diameter of this implant middle-end is 4.2mm ~ 5.0mm; The body diameter of tail end is 4.6 ~ 5.4mm; The range of taper of described circular cone is 23 ° ~ 27 °.

3. implant according to claim 1, the angle of bevel of this implant is 5 ° ~ 30 °.

4. implant according to claim 1, the skewed slot width of this implant is 1mm ~ 1.5mm.

5. implant according to claim 1, the middle-end cylinder of this implant is 0.3mm ~ 0.5mm to the reducing of trailing cylindrical.

6. implant according to claim 4, the middle-end cylinder of this implant with the diameter 1.5mm ~ 2mm perpendicular to cylindrical cross-section, the elongated hole of long 1.5mm ~ 2.5mm.

7. implant according to claim 4, the openings of sizes that the resistance to plucking of this implant middle-end cylinder goes out pawl is 0.25mm ~ 0.45mm, angle is 30 ° ~ 60 °, and the openings of sizes that the resistance to plucking of trailing cylindrical goes out pawl is 0.5mm ~ 0.7mm, and angle is 30 ° ~ 60 °.

8. implant according to claim 1, it is the internal thread hole of 1.0mm ~ 2.0mm that the trailing cylindrical bottom surface of this implant is provided with the diameter extended along cylinder axis direction, and screwed hole hole depth is 2.0mm ~ 4.0mm.