CN212066847U

CN212066847U - Absorbable binding device

Info

Publication number: CN212066847U
Application number: CN202020313167.4U
Authority: CN
Inventors: 孙庆焱; 许午; 高战团; 崔毅; 庄秀丽
Original assignee: CHANGCHUN SINOBIOMATERIALS CO LTD
Current assignee: CHANGCHUN SINOBIOMATERIALS CO LTD
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-12-04
Anticipated expiration: 2030-03-13

Abstract

The utility model discloses an it bindes device to absorb, include lock pipe, lock wedge and bind the body, the lock pipe is equipped with the logical groove of cross-section gradual change, it can arrange in to bind the body logical inslot, the outline of lock wedge with the interior outline in logical groove agrees with, in order to realize the lock wedge inserts right behind the lock pipe it is fixed to bind the extrusion of body. The absorbable binding device has good biocompatibility and no toxicity, can keep enough high mechanical strength in the fracture healing process, does not need to be taken out for the second time of operation, and is simple and convenient to operate and firm to fix.

Description

Absorbable binding device

Technical Field

The utility model relates to the technical field of medical equipment, in particular to can absorb device of binding.

Background

At present, the common long oblique fracture, the split fracture, the lacerated fracture, the crushed fracture and the smaller fracture are mostly fixed by simple binding, and the steel wire binding, the silk thread binding, the memory alloy embracing device, the steel cable or the titanium cable is generally used for binding and fixing.

The above described fixation methods have some drawbacks in the fracture healing process. The steel wire is extremely easy to slide into the fracture seam to cause bone nonunion, the steel wire is thin, the contact area is small, the wire cutting effect is generated after the wire is screwed, the bone cortex blood circulation is damaged to a certain degree, and the wire is difficult to take out once the wire grows into the fracture seam. The disadvantage of the thread is that it is not strong enough and therefore is used only for small bone fragments or for auxiliary fixation, and mostly also for external fixation protection. Nickel metal in memory alloy surrounds is a common source of contact metal allergy. The steel cable or the titanium cable is easy to cause stress shielding due to too high strength. The utility model patent of publication No. CN201101572Y discloses an integral binding body made of bioabsorbable material, however, the band head and the band body are integral, and the thickness of the band body is limited, which may cause the joint of the band body and the band head to break, thus the binding is ineffective; the requirements of the belt head and the belt body on materials are different, the requirement of the belt head on the strength of the materials is higher, the belt body has certain flexibility, and the material selection of the integrated structure is difficult.

Therefore, the technical problem to be solved by those skilled in the art is how to provide an absorbable binding device that can maintain a sufficiently high mechanical strength during the fracture healing process, has good biocompatibility, does not require secondary surgical removal, is easy to operate, and is firmly fixed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an it bindes device to absorb, biocompatibility is good, and is nontoxic, can keep enough high mechanical strength at the union in-process of fracture, need not the operation secondary and takes out, and is easy and simple to handle, and is fixed firm.

In order to realize the above-mentioned purpose, the utility model provides an it bindes device to absorb, include lock pipe, lock wedge and bind the body, the lock pipe is equipped with the logical groove of cross-section gradual change, bind the body and can arrange in lead to the inslot, the outline of lock wedge with the interior outline that leads to the groove agrees with, in order to realize the lock wedge inserts right behind the lock pipe it is fixed to bind the extrusion of the body.

Preferably, the both sides of lock wedge surface are equipped with lock wedge side tooth, the lock pipe be equipped with the logical groove internal tooth that lock wedge side tooth matches, in order to realize the lock wedge with the one-way locking of lock pipe mutually supporting.

Preferably, the tooth height of the side teeth of the lock wedge and the teeth of the through groove is 0.01-1 mm.

Preferably, the bottom side of the outer surface of the locking wedge is provided with an anti-skid spinous process.

Preferably, the binding body is a binding band or a binding wire.

Preferably, the outer surface of the binding band or the binding wire is provided with an anti-slip spinous process.

Preferably, the edge of the lock tube matched with the lock wedge is a ridge line or an arc line.

Preferably, the lock tube, the lock wedge and the binding body are all made of bioabsorbable materials.

Preferably, the locking tube and the locking wedge are made of poly-L-lactic acid.

Preferably, the binding body is made of poly-caprolactone, polyglycolic acid or polylactic acid-glycolic acid copolymer.

Compared with the prior art, the utility model provides an it binds device to absorb includes the lock pipe, the lock wedge and binds the body, bind the body as the auxiliary structure of ligature fixed bone piece etc. the base that supplies the lock wedge plug, the lock wedge is as the plug in the moving part of lock pipe, the lock wedge will be fixed in the extrusion of the body of binding in the lock pipe when inserting the lock pipe, wherein, the lock pipe is equipped with logical groove, logical groove has the cross-section of gradual change, the outline of lock wedge is closed with the interior contour of logical groove, the lock wedge also has the cross-section of the same gradual change; in the use process of the absorbable binding device, the binding body firstly fixes the bone block in a binding and hanging manner, and then the binding body is fixed in a manner of locking the lock tube and the lock wedge, specifically, the binding body is firstly placed in the through groove of the lock tube, then the lock wedge is inserted into the lock tube, and the binding body is fixed in the lock tube under the extrusion action of the lock wedge.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural view of an absorbable binding device provided in the embodiment of the present invention.

Wherein:

1-locking pipe, 11-through groove, 12-threading hole, 13-through groove internal tooth, 2-locking wedge, 21-locking wedge lateral tooth and 3-binding body.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.

The existing many fracture fixation methods have the following defects that the steel wire is easy to slide into the fracture seam to cause bone nonunion, the steel wire is thin and has small contact area, the wire cutting effect is generated after the steel wire is screwed down, the bone cortex blood circulation is damaged to a certain extent, and the steel wire is very difficult to take out once growing in; the silk thread has the defects that the strength is not high enough, so the silk thread is only used for small bone blocks or auxiliary fixation, and most of the silk thread needs external fixation protection; metallic nickel in memory alloy surrounds is a common source of contact metal allergy; the steel cable or the titanium cable is easy to cause stress shielding due to too high strength.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an absorbable binding device according to an embodiment of the present invention.

In a specific implementation mode, the utility model provides an it includes lock pipe 1, lock wedge 2 and bindes the body 3 to absorb bind the device, and the effect of lock pipe 1 lies in providing the base that can insert for lock wedge 2, and lock wedge 2 is as the moving part that can insert lock pipe 1, in this can absorb the use of binding the device, will bind body 3 earlier and arrange lock pipe 1 in, insert lock pipe 1 with lock wedge 2, can be fixed in lock pipe 1 with binding the extrusion of body 3.

Specifically, the lock tube 1 is provided with a through groove 11, the through groove 11 horizontally penetrates through the lock tube 1, notches are formed in two ends of the lock tube 1, and the through groove 11 is gradually changed in section and gradually reduced or enlarged from the notch at one end of the lock tube 1 to the notch at the other end; the outer contour of the locking wedge 2 is matched with the inner contour of the through groove 11, that is, the section of the locking wedge 2 is gradually changed and is consistent with the direction of the gradual reduction or gradual expansion of the through groove 11, so that the locking wedge 2 is matched with the locking tube 1 and can be inserted into the through groove 11 of the locking tube 1. In the use process of the absorbable binding device, the binding body 3 is firstly used for assisting in fixing the bone blocks in a binding mode, a hanging mode and the like, the binding body 3 is placed in the through groove 11 of the lock tube 1, then the lock wedge 2 is inserted into the lock tube 1, the inserted lock wedge 2 is locked with the lock tube 1, and the binding body 3 is fixed in the lock tube 1 under the extrusion effect of the lock wedge 2. The absorbable binding device has good biocompatibility and no toxicity, can keep enough high mechanical strength in the fracture healing process, does not need to be taken out for the second time in an operation, and is simple and convenient to operate and firm to fix.

For better technical effect, to strengthen the locking effect of lock pipe 1 and lock wedge 2 to strengthen the fixed effect of binding body 3, set up one-way tooth at the locking contact surface of lock pipe 1 and lock wedge 2 both sides.

Specifically, two sides of the outer surface of the lock wedge 2 are provided with lock wedge side teeth 21, two sides of the inner surface of the lock tube 1, namely the inner surface of the through groove 11, are provided with through groove inner teeth 13, and the lock wedge side teeth 21 are matched and matched with the through groove inner teeth 13 to realize the one-way locking of the mutual matching of the lock wedge 2 and the lock tube 1. Wherein, the tooth height of lock wedge side tooth 21 and logical groove internal tooth 13 is 0.01 ~ 1 mm.

In order to achieve better technical effects, the locking tube 1 and the locking wedge 2 have good anti-skidding fixing effects outside the locking contact surface, and spinous processes are arranged on the sliding contact surface of the bottom sides of the locking tube 1 and the locking wedge 2.

Specifically, the bottom side of the outer surface of the lock wedge 2 is provided with an anti-skid spinous process; similarly, in order to improve the anti-slip fixing effect of the binding body 3, the outer surface of the binding body 3 is also provided with anti-slip spinous processes.

In this embodiment, the binding body 3 is used for binding, hanging or using other methods to assist in fixing the bone block, and has similar functions to steel wires in the prior art; illustratively, the binding body 3 is in a band shape or a line shape, that is, the binding body 3 is a binding band or a binding line; further, the binding body 3 is made of poly-caprolactone, polyglycolic acid or polylactic acid-glycolic acid copolymer.

It should be noted that the absorbable binding device can be absorbed, utilized or participate in metabolism, that is, the absorbable binding device is made of a bio-absorbable material, and the locking tube 1, the locking wedge 2 and the binding body 3 are all made of a bio-absorbable material. The material of the lock tube 1 and the lock wedge 2 includes, but is not limited to, poly-L-lactic acid.

In a specific embodiment, the locking wedge 2 can be provided in a straight cone shape or in a curved fan shape; when the lock wedge 2 is a straight cone, the edge of the lock tube 1 matched with the lock wedge 2 is a straight ridge line, and when the lock wedge 2 is a curved fan-shaped, the edge of the lock tube 1 matched with the lock wedge 2 is a curved arc line.

Furthermore, the utility model discloses four kinds of different embodiments can absorb binding device still are given.

In a first embodiment, the absorbable binding device is composed of a lock tube 1, a lock wedge 2 and a binding body 3, wherein the binding body 3 is made of poly-caprolactone, the lock tube 1 and the lock wedge 2 are both made of poly-L-lactic acid, the binding body 3 is a binding wire with the length of 100mm and the diameter of 0.5mm, the lock tube 1 is provided with a through groove 11, and the lock tube 1 is 5mm in length, 3mm in width and 2mm in height. The through groove 11 is internally provided with continuously distributed through groove internal teeth 13 with the tooth height of 0.3mm, the surface of the lock wedge 2 is provided with continuously distributed lock wedge side teeth 21 matched with the through groove internal teeth 13, the tooth height is 0.3mm, and the bottom of the lock wedge 2 is provided with an anti-skid spinous process. Two ends of the binding body 3 after the fracture binding respectively penetrate through the threading holes 12 at the two ends of the lock tube 1, the lock wedge 2 is pushed into the lock tube 1, the lock wedge 2 and the lock tube 1 are locked by the through groove inner teeth 13 and the lock wedge side teeth 21 which are matched with each other, and the binding body 3 is fixed by the extrusion of the lock wedge 2 and the lock tube 1.

In a second embodiment, the absorbable tying device is constructed the same as the first embodiment, except that the tying body 3 is made of polyglycolic acid. The binding body 3 is a binding wire with the length of 120mm and the diameter of 0.5 mm. The lock pipe 1 is provided with a through groove 11, and the lock pipe 1 is 4mm in length, 3mm in width and 2mm in height. The through groove 11 is internally provided with continuously distributed through groove internal teeth 13 with the tooth height of 0.3mm, the surface of the lock wedge 2 is provided with continuously distributed lock wedge side teeth 21 matched with the through groove internal teeth 13, the tooth height is 0.3mm, and the bottom of the lock wedge 2 is provided with an anti-skid spinous process. The binding body 3 is fixed in the same manner as the first embodiment.

In a third embodiment, the absorbable binding device comprises a locking tube 1, a locking wedge 2 and a binding body 3, wherein the binding body 3 is made of poly-caprolactone, the locking tube 1 and the locking wedge 2 are both made of poly-L-lactic acid, the binding body 3 is a wide and flat binding band with the length of 120mm, the width of 3mm and the thickness of 0.5mm, and anti-skid spinous processes are arranged on two sides of the binding body 3. The lock pipe 1 is provided with a through groove 11, and the lock pipe 1 is 5mm in length, 6mm in width and 5mm in height. The through groove 11 is internally provided with continuously distributed through groove internal teeth 13 with the tooth height of 0.5mm, the surface of the lock wedge 2 is provided with continuously distributed lock wedge side teeth 21 matched with the through groove internal teeth 13, and the tooth height is 0.5 mm. Two ends of a binding body 3 after fracture binding penetrate through threading holes 12 at two ends of a lock tube 1 respectively, a lock wedge 2 is pushed into the lock tube 1, the lock wedge 2 and the lock tube 1 are locked through groove internal teeth 13 and lock wedge side teeth 21 which are matched with each other, and the binding belt is fixed by extrusion of the lock wedge 2 and the lock tube 1.

In a fourth embodiment, the absorbable tying device is identical in structure to the third embodiment except that the tying body 3 is made of a polylactic acid-glycolic acid copolymer. The lock tube 1 and the lock wedge 2 are both made of poly-L-lactic acid, the binding body 3 is a wide and flat binding belt with the length of 150mm, the width of 3mm and the thickness of 0.5mm, and the two sides of the binding body 3 are provided with anti-skid spinous processes. The lock pipe 1 is provided with a through groove 11, and the lock pipe 1 is 5mm in length, 6mm in width and 5mm in height. The through groove 11 is internally provided with continuously distributed through groove internal teeth 13 with the tooth height of 0.5mm, the surface of the lock wedge 2 is provided with continuously distributed lock wedge side teeth 21 matched with the through groove internal teeth 13, and the tooth height is 0.5 mm. The binding body 3 is fixed in the same manner as the third embodiment.

It is right above the utility model provides an it bindes the device and has introduced in detail to absorb. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. The absorbable binding device is characterized by comprising a lock pipe (1), a lock wedge (2) and a binding body (3), wherein the lock pipe (1) is provided with a through groove (11) with a gradually-changed cross section, the binding body (3) can be arranged in the through groove (11), and the outer contour of the lock wedge (2) is matched with the inner contour of the through groove (11) so as to extrude and fix the binding body (3) after the lock wedge (2) is inserted into the lock pipe (1).

2. An absorbable binding device according to claim 1, characterized in that the locking wedge (2) is provided with locking wedge side teeth (21) on both sides of its outer surface, and the locking tube (1) is provided with through groove inner teeth (13) matching with the locking wedge side teeth (21) to achieve unidirectional locking of the locking wedge (2) and the locking tube (1) in cooperation with each other.

3. An absorbable binding device according to claim 2, characterized in that the teeth height of the wedge side teeth (21) and the through slot inner teeth (13) is 0.01-1 mm.

4. An absorbable tying device according to claim 2, characterized in that the bottom side of the outer surface of the locking wedge (2) is provided with anti-skid spinous processes.

5. Absorbable tying device according to claim 1, characterized in that said tying body (3) is a tying band or a tying thread.

6. The absorbable tying device of claim 5, wherein the outer surface of the tying band or the tying wire is provided with anti-slip spinous processes.

7. An absorbable tying device according to any of the claims 1 to 6, characterized in that the edges where the locking tube (1) fits with the locking wedge (2) are ridges or arcs.

8. The absorbable tying device of any one of claims 1 to 6, characterized in that the locking tube (1), the locking wedge (2) and the tying body (3) are all made of bioabsorbable material.

9. An absorbable tying device according to claim 8, characterized in that the locking tube (1) and the locking wedge (2) are made of poly-L-lactic acid.

10. The absorbable tying device of claim 8, wherein the tying body (3) is made of poly-caprolactone or polyglycolic acid or polylactic acid-glycolic acid copolymer.