An arc-shaped clasp rod clamp and a trauma external frame formed by the arc-shaped clasp rod clamp

Abstract

The application discloses a curved clamping ring rod clamp and a trauma external frame formed by the curved clamping ring rod clamp, wherein the curved clamping ring rod clamp comprises a clamping rod assembly and a clamping ring assembly; the clamping rod assembly and the clamping ring assembly are sleeved on a first locking screw; a clamping groove is arranged on a first end surface of the clamping ring assembly, and a first locking screw mounting hole is arranged on a second end surface; a second locking screw mounting hole for mounting a second locking screw is arranged on a groove wall of the clamping groove, a jackscrew is arranged in the first locking screw mounting hole, and the jackscrew is used for being threadedly connected with the first locking screw; a rod body mounting position for mounting a rod body is arranged on the first end surface of the clamping rod assembly, and the first end surface of the clamping rod assembly is oppositely arranged with the second end surface of the clamping ring assembly. When the rod body is held, the anti-skid part can provide elastic clamping force to prevent the rod body from falling off and effectively promote the effectiveness of treatment.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of medical devices, in particular to an arc-shaped clamping ring rod clamp and a trauma external frame formed by the arc-shaped clamping ring rod clamp. BACKGROUND

[0002] In the process of surgical bone surgery treatment and correction, a fixing device is essential, and the traditional fixing method generally adopts a bolt and a nut for fixing, and most of them are rigid clamps without anti-skid treatment. When the fixing device is in a moving state, the clamped parts are easy to shake or even fall off, damage occurs, which is very inconvenient, and the treatment effect is not good, and the purpose of continuous force correction cannot be achieved. SUMMARY

[0003] The present application aims to provide an arc-shaped clamping ring rod clamp and a trauma external frame formed by the arc-shaped clamping ring rod clamp, so as to solve the problem that the clamped parts are easy to fall off in the prior art.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0005] In a first aspect of the present application, an arc-shaped clamping ring rod clamp is provided, comprising a clamping rod assembly and a clamping ring assembly; the clamping rod assembly and the clamping ring assembly are sleeved on a first locking screw;

[0006] A clamping groove is arranged on the first end face of the clamping ring assembly, and a first locking screw mounting hole is arranged on the second end face; a second locking screw mounting hole for mounting a second locking screw is arranged on the groove wall of the clamping groove, and a jackscrew is arranged in the first locking screw mounting hole, and the jackscrew is used for threaded connection with the first locking screw;

[0007] A rod body mounting position for mounting a rod body is arranged on the first end face of the clamping rod assembly, and the first end face of the clamping rod assembly is arranged opposite to the second end face of the clamping ring assembly.

[0008] As an optional scheme of the present application, the bottom surface of the clamping groove is arranged as an arc protruding towards the bottom surface.

[0009] As an optional scheme of the present application, a chuck is arranged between the clamping rod assembly and the clamping ring assembly, the chuck is sleeved on the first locking screw, first end face teeth and second end face teeth are respectively arranged on the two end faces of the chuck; third end face teeth are arranged on the second end face of the clamping ring assembly, and the first end face teeth are arranged in engagement with the third end face teeth.

[0010] As an optional scheme of the present application, the tail end of the jackscrew is located in the first locking screw mounting hole of the clamping ring assembly, and the head end of the jackscrew is provided with an external thread; the end portion of the first locking screw is provided with an internal thread for connecting the external thread at the head end of the jackscrew.

[0011] As an optional solution of the present application, the second locking screw is provided with a nut threadedly connected therewith, and the nut is provided with a fourth end face tooth close to the side of the snap ring.

[0012] As an optional solution of the present application, the second locking screw mounting hole is a long hole, and two or more second locking screws can be mounted in the long hole.

[0013] As an optional solution of the present application, the rod body mounting position is an arc-shaped groove formed on the first end face of the snap ring assembly.

[0014] As an optional solution of the present application, the bottom of the arc-shaped groove is provided with a clamping groove for limiting the rod body.

[0015] As an optional solution of the present application, the first locking screw and the second locking screw are both hexagonal screws.

[0016] In a second aspect of the present application, a wound external frame composed of an arc-shaped snap ring rod clamp is provided, which comprises an upper end ring, a lower end ring, a rod body, and an arc-shaped snap ring rod clamp arranged at both ends of the rod body; the rod body is mounted in the rod body mounting position and locked and fixed by a first locking screw; the upper end ring and the lower end ring are respectively mounted in the clamping grooves at the upper part and the lower part of the rod body and locked and fixed by a second locking screw.

[0017] The present application has the following beneficial effects:

[0018] 1) The arc-shaped snap ring rod clamp provided by the present application is provided with a rod body mounting position and a clamping groove, and is fixed by a locking screw, which can provide an elastic clamping force to prevent the rod body from slipping when holding the rod body, thereby effectively promoting the effectiveness of the treatment without causing the rod body to fall off.

[0019] 2) The wound external frame provided by the present application is prepared by using an arc-shaped snap ring rod clamp, and the connection of the arc-shaped snap ring rod clamp with the upper end ring and the lower end ring is firm, stable, convenient, and flexible. When fastened, the relative position of the arc-shaped snap ring rod clamp and the ring does not displace, and the clamping operation is convenient and simple. In addition, the end face teeth on both sides of the chuck and the end face teeth on the snap ring assembly can be engaged with each other after the nut screw, which has an anti-slip effect. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the present application, and together with the description of the exemplary embodiments of the present application and the explanation thereof, explain the present application, and do not constitute an improper limitation of the present application. In the drawings:

[0021] Figure 1 FIG. 1 is a structural schematic view of an arc-shaped snap ring rod clamp according to an embodiment of the present application;

[0022] FIG. 2 is a structural schematic view of a wound external frame according to an embodiment of the present application.Figure 2 Structure diagram of the clamping ring assembly in the embodiment of the present application;

[0023] Figure 3 Structure diagram of the clamping ring assembly in the embodiment of the present application;

[0024] Figure 4 Structure diagram of the clamping ring assembly in the embodiment of the present application; Figure 3 Structure diagram of the clamping ring assembly in the embodiment of the present application;

[0025] Figure 5 Structure diagram of the clamping ring assembly in the embodiment of the present application;

[0026] Figure 6 Structure diagram of the clamping ring assembly in the embodiment of the present application;

[0027] Figure 7 Structure diagram of the clamping ring assembly in the embodiment of the present application; Figure 6 Structure diagram of the clamping ring assembly in the embodiment of the present application;

[0028] Figure 8 Structure diagram of the clamping ring assembly in the embodiment of the present application;

[0029] In the figure: 1-first locking screw; 2-clamping rod assembly; 3-clamping disc; 4-clamping ring assembly; 5-top screw; 6-second locking screw; 7-second locking screw mounting hole; 8-first locking screw mounting hole; 9-clamping groove; 10-third end surface tooth; 11-upper end ring; 12-lower end ring; 13-rod body; 14-rod body mounting position; 15-clamping position slot. DETAILED DESCRIPTION

[0030] The present application will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0031] The following detailed description is exemplary description and is intended to provide further detailed description of the present application. Unless otherwise specified, all technical terms used in the present application have the same meaning as generally understood by those skilled in the art. The terms used in the present application are only for the purpose of describing the specific embodiments and are not intended to limit the exemplary embodiments according to the present application.

[0032] As Figures 1-4As shown, the embodiment 1 of the present application provides an arc-shaped clamping ring rod clamp, which comprises a clamping rod assembly 2 and a clamping ring assembly 4; the clamping rod assembly 2 and the clamping ring assembly 4 are sleeved on a first locking screw 1; a clamping groove 9 is arranged on the first end face of the clamping ring assembly 4, and a first locking screw mounting hole 8 is arranged on the second end face; a second locking screw mounting hole 7 for mounting a second locking screw 6 is arranged on the groove wall of the clamping groove 9, and the second locking screw 6 is arranged in cross with the clamping groove 9 after being mounted. A jackscrew 5 is arranged in the first locking screw mounting hole 8 of the clamping ring assembly 4, and the jackscrew 5 is used for threaded connection with the first locking screw 1; specifically, the tail end of the jackscrew 5 is located in the first locking screw mounting hole 8 of the clamping ring assembly 4, and the head end of the jackscrew 5 is provided with an external thread; the end of the first locking screw 1 is provided with an internal thread, which is used for connecting the external thread at the head end of the jackscrew 5. A rod body mounting position 14 for mounting a rod body 13 is arranged on the first end face of the clamping rod assembly 2, and the first end face of the clamping rod assembly 2 is arranged opposite to the second end face of the clamping ring assembly 4. A chuck 3 is arranged between the clamping rod assembly 2 and the clamping ring assembly 4, the chuck 3 is sleeved on the first locking screw 1, and first end face teeth and second end face teeth are arranged on the two end faces of the chuck 3 respectively; third end face teeth 10 are arranged on the second end face of the clamping ring assembly 4, and the first end face teeth are arranged in engagement with the third end face teeth 10.

[0033] The arc-shaped clamping ring rod clamp provided by the embodiment of the present application is provided with a rod body mounting position and a clamping groove, and is fixed by using a locking screw, so that the anti-skid component can provide elastic clamping force to prevent the rod body from slipping, and the treatment effect can be effectively promoted under the condition that the rod body is not detached. In the above embodiment, the chuck 3 is arranged, which has two main functions. One is that if the rod body 13 is directly fixed between the clamping ring assembly 4 and the clamping rod assembly 2 during installation, the surface of the clamping ring assembly 4 may be abraded after long-term fixation, and the entire device needs to be replaced during replacement, which causes waste and low economic efficiency. The other is that the clamping ring assembly 4 needs to be fixed on the upper end ring and the lower end ring by a screw, and a certain deformation is required during screw tightening to closely fit the upper end ring and the lower end ring, so the clamping ring assembly 4 is made of hard rubber with a certain rigidity or plastic material. If the rod body 13 directly contacts the clamping ring assembly 4, the fixing effect is not good, and the clamping ring assembly 4 is easily abraded.

[0034] As a preferred embodiment of the present application, the bottom surface of the clamping groove 9 is arranged as an arc shape protruding towards the bottom surface, so that the arc-shaped bottom surface can be fitted with the arc-shaped edge of the upper end ring or the lower end ring during installation of the upper end ring or the lower end ring, thereby improving the fitting property of installation.

[0035] As a preferred embodiment of the present application, a nut is arranged on the second locking screw 6 and is threadedly connected with the second locking screw 6, and the nut is arranged with fourth end face teeth close to the side of the clasp. By arranging the fourth end face teeth, the stability of the second locking screw 6 can be further improved.

[0036] As a preferred embodiment of the present application, the rod body mounting position 14 is an arc-shaped groove arranged on the first end face of the clamping rod assembly 2. The groove bottom of the arc-shaped groove is arranged with a clamping groove 15 for limiting the rod body 13. The reason for this arrangement is that the rod body 13 is cylindrical and may rotate or slip after installation. Therefore, a clamping protrusion is arranged on the surface of the rod body 13 in the vertical direction, and the clamping groove 15 is arranged on the groove bottom of the arc-shaped groove. After installation, the clamping protrusion of the rod body 13 is arranged in the clamping groove 15 to achieve positioning and prevent the rod body 13 from rotating.

[0037] As shown in the drawings, Figures 5-7 In some other embodiments, the second locking screw mounting hole 7 is arranged as a long hole, and two or more than two second locking screws 6 can be arranged in the long hole. This arrangement can realize the installation of multiple locking screws on one arc-shaped clamping rod clamp, thereby increasing the connection stability with the upper end ring or the lower end ring.

[0038] As an example of the above-mentioned embodiments, the first locking screw 1 and the second locking screw 6 are both hexagonal screws.

[0039] As shown in the drawings, Figure 8 Based on the same inventive concept as the above-mentioned embodiments, another aspect of the present application also provides a trauma external frame composed of an arc-shaped clamping rod clamp. The trauma external frame comprises an upper end ring 11, a lower end ring 12, a rod body 13, and an arc-shaped clamping rod clamp arranged at both ends of the rod body 13, and the arc-shaped clamping rod clamp is used to connect with the upper and lower end rings 12 of the trauma external frame. Specifically, the rod body 13 is arranged in the rod body mounting position 14 and is locked and fixed by the first locking screw 1; the upper end ring 11 and the lower end ring 12 are respectively arranged in the clamping groove 9 arranged on the upper part and the lower part of the rod body 13, and are locked and fixed by the second locking screw 6.

[0040] The trauma external frame provided by the present application is prepared by using an arc-shaped clamping rod clamp. The connection of the arc-shaped clamping rod clamp with the upper end ring and the lower end ring is firm, stable, convenient, and flexible. When fastened, the relative position of the arc-shaped clamping rod clamp and the ring does not displace, and the clamping operation is convenient and simple.

[0041] It is to be understood by those skilled in the art that the present application can be implemented by other embodiments without departing from the spirit or essential characteristics thereof. Therefore, the above-mentioned disclosed embodiments are only examples and are not the only ones. All changes within the scope of the present application or within the scope equivalent to the present application are included in the present application.

Claims

1. An arc-shaped circlip rod clamp, characterized in that, It comprises a clamp rod assembly (2) and a clamp ring assembly (4); the clamp rod assembly (2) and the clamp ring assembly (4) are sleeved on the first locking screw (1); The first end face of the clamp ring assembly (4) is provided with a clamping groove (9), and the second end face is provided with a first locking screw mounting hole (8); the groove wall of the clamping groove (9) is provided with a second locking screw mounting hole (7) for mounting a second locking screw (6), and the first locking screw mounting hole (8) is provided with a jackscrew (5) for threaded connection with the first locking screw (1); The first end face of the clamp rod assembly (2) is provided with a rod mounting position (14) for mounting a rod body (13), and the first end face of the clamp rod assembly (2) is arranged opposite to the second end face of the clamp ring assembly (4); a chuck (3) is arranged between the clamp rod assembly (2) and the clamp ring assembly (4), the chuck (3) is sleeved on the first locking screw (1), and the two end faces of the chuck (3) are respectively provided with first end face teeth and second end face teeth; the second end face of the clamp ring assembly (4) is provided with third end face teeth (10), and the first end face teeth are arranged in engagement with the third end face teeth (10); the tail end of the jackscrew (5) is located in the first locking screw mounting hole (8) of the clamp ring assembly (4), and the head end of the jackscrew (5) is provided with an external thread; the end of the first locking screw (1) is provided with an internal thread for connecting with the external thread at the head end of the jackscrew (5).

2. The arc-shaped clasp bar clamp of claim 1, wherein, The bottom surface of the clamping groove (9) is arranged as an arc shape protruding towards the bottom surface.

3. The arc-shaped clasp bar clamp of claim 1, wherein, The second locking screw (6) is provided with a nut in threaded connection therewith, and the nut is provided with fourth end face teeth close to the clamp ring.

4. The arc-shaped clasp bar clamp of claim 1, wherein, The second locking screw mounting hole (7) is a long hole, and two or more than two second locking screws (6) can be mounted in the long hole.

5. The arc-shaped clasp bar clamp of claim 1, wherein, The rod mounting position (14) is an arc-shaped groove formed in the first end face of the clamp rod assembly (2).

6. The arc-shaped clasp bar clamp of claim 5, wherein, The groove bottom of the arc-shaped groove is provided with a clamping groove (15) for limiting the rod body (13).

7. The arc-shaped clasp bar clamp of claim 1, wherein, The first locking screw (1) and the second locking screw (6) are both internal hexagonal screws.

8. A trauma external fixator comprising the arcuate clasp bar clamp of any one of claims 1-7, wherein, It comprises an upper end ring (11), a lower end ring (12), a rod body (13) and an arc-shaped clamp ring rod clamp arranged at both ends of the rod body (13); the rod body (13) is mounted in the rod body mounting position (14) and locked and fixed by the first locking screw (1); the upper end ring (11) and the lower end ring (12) are respectively mounted in the clamping grooves (9) at the upper part and the lower part of the rod body (13) and locked and fixed by the second locking screw (6).

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