Round bayonet locking device

Abstract

The utility model discloses a circular bayonet locking device which comprises a clamp body, a lantern ring mechanism used for forming an elastic limiting structure, an anti-falling mechanism used for preventing the lantern ring mechanism from falling off and a locking mechanism used for elastically locking the lantern ring mechanism, and an opening is formed in the side portion of the clamp body. The core ring main body is provided with a cutter groove, the sleeve ring mechanism is arranged on the inner side of the clamp body, the anti-falling mechanism is arranged on the side portion of the sleeve ring mechanism, and the locking mechanism is assembled at the opening position of the clamp body, the core ring structure has the advantages that the sleeve ring mechanism is arranged, the sleeve ring mechanism and the clamp body jointly form a double-locking structure, the cutter groove is formed in the core ring main body, and therefore the core ring main body is not prone to falling off. According to the core ring, the deformation requirement of the core ring body can be met, the locking mechanism is matched, the core ring body can be extruded through the clamp body to achieve elastic locking, the reliability of the locking device is improved, the locking device is prevented from loosening, the operation effect is guaranteed, and the anti-falling mechanism is arranged so that the phenomenon that parts fall off in the locking process can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of medical device accessories, in particular to a circular bayonet locking device. Background Art

[0002] In the prior art, the cranial head frame is an important instrument used in cranial surgery, which plays an important role in the smooth progress of the operation. It is mainly used to obtain a support and limiting structure for the patient's head to cooperate with the surgical instruments during brain surgery. Common cranial head frames include door-type structures and arc-shaped structures. They are fixed to the patient's head before the operation, and the limiting components required for the corresponding operation are loaded and fixed on the cranial head frame. Among the instruments that cooperate with the cranial head frame, one of the important supporting components is the locking device at the connection point of the cranial head frame installation point. The basic structural type is similar to the clamp structure. However, in the prior art, the locking device of the circular sleeve structure relies on the direct extrusion of the outer ring on the inner side. The locking process is inelastic, and the rigid pressure on the inner side is prone to loosening, which affects the surgical effect and has poor safety.

[0003] The Chinese utility model patent with application number: 202121553605.5 discloses a cranial cube positioning head frame, comprising an outer frame for hematoma target positioning and an inner frame for head fixation, wherein the outer frame and the inner frame are connected to each other via a rotating guide rail provided on the outer frame, the rotating guide rail is fixedly provided on the outer frame, and the inner frame is rotatably provided on the rotating guide rail, and the inner frame can rotate within the rotating guide rail, so that the inner frame and the outer frame can rotate. However, the locking device in this cranial cube positioning head frame adopts the clamp structure in the prior art, which achieves the locking effect by directly squeezing the inner side by the outer ring, and the locking process is inelastic, but the rigid pressing on the inner side is prone to loosening, which affects the surgical effect and has certain safety hazards. Utility Model Content

[0004] The utility model aims to provide a circular bayonet locking device.

[0005] In order to achieve the above purpose, the technical solution proposed by the utility model is:

[0006] A circular bayonet locking device comprises a clamp body, a side of which is provided with an opening, a collar mechanism for constituting an elastic limiting structure, an anti-slip mechanism for preventing the collar mechanism from falling off, and a locking mechanism for elastically locking the collar mechanism, wherein the collar mechanism is arranged on the inner side of the clamp body, the anti-slip mechanism is arranged on the side of the collar mechanism, and the locking mechanism is assembled at the opening of the clamp body.

[0007] The sleeve ring mechanism includes a core ring body and a cutting groove. The core ring body is arranged on the inner side of the clamp body and is arranged concentrically with the clamp body. The clamp body is sleeved with the core ring body. The cutting grooves are provided in several groups. The several groups of cutting grooves are evenly spaced and arranged on the upper part of the core ring body and penetrate the core ring body.

[0008] A flange structure is provided at the periphery of the upper end of the core ring body and the flange structure is located on the outside of the core ring body, and the inner wall of the core ring body is arranged as a step-shaped structure.

[0009] The anti-slip mechanism includes an anti-slip block and an anti-slip base, the anti-slip block is arranged at the upper end of the core ring body and is fixedly connected to the core ring body, the anti-slip base is arranged on the outer side of the lower end of the core ring body and is fixedly connected to the core ring body, the anti-slip block and the anti-slip base are arranged correspondingly to form an anti-slip structure, and the side of the clamp body is located between the anti-slip block and the anti-slip base.

[0010] The locking mechanism includes a locking end block, a locking positioning block and a locking assembly. The locking end block and the locking positioning block are arranged on both sides of the opening of the clamp body opposite to each other and are fixedly connected to the clamp body. The locking end block and the locking positioning block are integrally formed with a spacing therebetween. The locking assembly is arranged on the sides of the locking end block and the locking positioning block and passes through the locking end block and the locking positioning block.

[0011] It also includes an avoidance groove and a deformation groove, wherein the avoidance groove is arranged at the opening of the clamp body and the avoidance groove is arranged in the same shape as the anti-slip block, and the deformation groove and the avoidance groove are arranged adjacent to each other and the two are connected to form a distance between the locking end block and the locking positioning block.

[0012] The locking assembly includes a locking screw and a locking knob. The locking screw is arranged on the sides of the locking end block and the locking positioning block and passes through the locking end block and the locking positioning block. One end of the locking screw is provided with an external thread on the side. The locking knob is arranged on a side of the locking end block away from the locking positioning block and an internal thread is provided inside the locking knob. The locking knob is threadedly connected to the end of the locking screw provided with the external thread.

[0013] It also includes a washer, which is sleeved on the side of the locking screw and located between the locking knob and the locking end block.

[0014] A clamping block is provided at one end of the locking screw away from the locking knob, and the clamping block is configured as a strip block structure. A strip groove is provided on one side of the locking positioning block away from the locking end block corresponding to the clamping block, and the clamping block is located in the strip groove.

[0015] The locking end block and the locking positioning block are arranged at ends away from the clamp body as wedge-shaped structures.

[0016] The beneficial effects of the utility model are:

[0017] A sleeve mechanism is provided, which together with the clamp body constitutes a double locking structure, and a cutting groove is arranged on the core ring body to meet the deformation requirements of the core ring body. In conjunction with the locking mechanism, the core ring body can be squeezed by the clamp body to achieve elastic locking, thereby increasing the reliability of the locking device, avoiding loosening of the locking device, ensuring the surgical effect, and improving the safety of the locking device. An anti-slip mechanism is provided, which can relatively limit the clamp body and the sleeve mechanism to prevent the two from falling off during the locking process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is an exploded schematic diagram of the collar mechanism and the clamp body of the utility model;

[0020] Figure 3 It is a schematic diagram of the matching state between the core ring body and the clamp body of the utility model;

[0021] Figure 4 It is an exploded schematic diagram of the locking mechanism and the clamp body of the utility model.

[0022] In the figure: 1. Clamp body; 2. Core ring body; 3. Cutting knife groove; 4. Anti-slip block; 5. Anti-slip base; 6. Locking end block; 7. Locking positioning block; 8. Avoidance groove; 9. Deformation groove; 10. Locking screw; 11. Locking knob; 12. Washer; 13. Clamp block. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0024] A circular bayonet locking device comprises a clamp body 1, the side of the clamp body 1 is provided with an opening, and also comprises a collar mechanism for constituting an elastic limiting structure, an anti-drop mechanism for preventing the collar mechanism from falling off, and a locking mechanism for elastically locking the collar mechanism, wherein the collar mechanism is arranged on the inner side of the clamp body 1, the anti-drop mechanism is arranged on the side of the collar mechanism, and the locking mechanism is assembled at the opening of the clamp body 1. The overall structural schematic diagram of the utility model is as shown in FIG. Figure 1 shown.

[0025] The sleeve ring mechanism includes a core ring body 2 and a cutting groove 3. The core ring body 2 is arranged on the inner side of the clamp body 1 and is arranged concentrically with the clamp body 1. The clamp body 1 is sleeved with the core ring body 2. The cutting groove 3 is provided with a plurality of groups. The plurality of groups of cutting grooves 3 are evenly spaced and arranged on the upper part of the core ring body 2 and penetrate the core ring body 2. The sleeve ring mechanism cooperates with the core ring body 2 and the cutting groove 3 to form an elastic limiting structure on the inner side of the locking device, wherein the core ring body 2 is used as the core ring structure on the inner side of the clamp body 1, and the cutting groove 3 is used as a force dispersion structure on the core ring body 2 to meet the deformation requirements of the core ring body 2, so that when the clamp body 1 squeezes the core ring body 2, deformation occurs to disperse the force. The exploded schematic diagram of the sleeve ring mechanism and the clamp body 1 of the utility model is shown as follows Figure 2 shown.

[0026] A flange structure is provided on the upper periphery of the core ring body 2 and the flange structure is located on the outside of the core ring body 2. The inner wall of the core ring body 2 is set as a step-like structure, wherein the flange structure on the core ring body 2 can effectively enhance the strength at the edge of the core ring body 2. The inner wall of the core ring body 2 is set as a step-like structure to meet the installation requirements of the locking device.

[0027] The anti-slip mechanism includes an anti-slip block 4 and an anti-slip base 5. The anti-slip block 4 is arranged at the upper end of the core ring body 2 and is fixedly connected to the core ring body 2. The anti-slip base 5 is arranged on the outer side of the lower end of the core ring body 2 and is fixedly connected to the core ring body 2. The anti-slip block 4 and the anti-slip base 5 are arranged correspondingly to form an anti-slip structure. The side of the clamp body 1 is located between the anti-slip block 4 and the anti-slip base 5. The anti-slip mechanism cooperates with the anti-slip block 4 and the anti-slip base 5 to form an anti-slip structure on the core ring body 2 to prevent the clamp body 1 and the core ring body 2 from falling off in the assembled state. The anti-slip block 4 is used as the anti-slip structure at the upper end of the core ring body 2, and the anti-slip base 5 is used as the anti-slip structure at the lower end of the core ring body 2 and provides support for the bottom of the clamp body 1. The two cooperate with each other to prevent the clamp body 1 from falling off from the core ring body 2. The schematic diagram of the cooperation state of the core ring body 2 and the clamp body 1 of the utility model is shown in Figure 3 shown.

[0028] The locking mechanism includes a locking end block 6, a locking positioning block 7 and a locking assembly. The locking end block 6 and the locking positioning block 7 are relatively arranged on both sides of the opening of the clamp body 1 and are fixedly connected to the clamp body 1. The locking end block 6 and the locking positioning block 7 are integrally formed and a spacing is left between the two. The locking assembly is arranged on the side of the locking end block 6 and the locking positioning block 7 and penetrates the locking end block 6 and the locking positioning block 7. The locking mechanism cooperates with the locking end block 6, the locking positioning block 7 and the locking assembly to lock the clamp body 1 to lock the core ring body 2, wherein the locking end block 6 and the locking positioning block 7 are used as the locking structure at the opening of the clamp body 1, and the locking assembly is used to lock the locking end block 6 with the locking positioning block 7, thereby locking the clamp body 1 to lock the core ring body 2. The explosion diagram of the locking mechanism of the utility model and the clamp body 1 is shown as follows Figure 4 shown.

[0029] It also includes an avoidance groove 8 and a deformation groove 9. The avoidance groove 8 is arranged at the opening of the clamp body 1 and is contoured with the anti-slip block 4. The deformation groove 9 is adjacent to the avoidance groove 8 and the two are connected to form a distance between the locking end block 6 and the locking positioning block 7, wherein the avoidance groove 8 is used as an avoidance structure on the clamp body 1 to meet the installation requirements of the anti-slip block 4, and the deformation groove 9 is used as a distance between the locking end block 6 and the locking positioning block 7 to meet the requirements of the distance change between the two.

[0030] The locking assembly includes a locking screw 10 and a locking knob 11. The locking screw 10 is arranged on the side of the locking end block 6 and the locking positioning block 7 and penetrates the locking end block 6 and the locking positioning block 7. One end side of the locking screw 10 is provided with an external thread. The locking knob 11 is arranged on the side of the locking end block 6 away from the locking positioning block 7 and the interior of the locking knob 11 is provided with an internal thread. The locking knob 11 is threadedly connected to the end of the locking screw 10 provided with the external thread. The locking assembly cooperates with the locking screw 10 and the locking knob 11 to lock the locking end block 6 and the locking positioning block 7, wherein the locking screw 10 is used as the main body of the locking structure, and the locking knob 11 is used to cooperate with the locking screw 10 to lock the locking end block 6 and the locking positioning block 7.

[0031] It also includes a washer 12, which is sleeved on the side of the locking screw 10 and located between the locking knob 11 and the locking end block 6, wherein the washer 12 is used to improve the matching accuracy between the locking screw 10 and the locking knob 11 and the locking end block 6, thereby improving the locking effect.

[0032] A clamping block 13 is provided at one end of the locking screw 10 away from the locking knob 11, and the clamping block 13 is set as a strip block structure. A strip groove is provided on the side of the locking positioning block 7 away from the locking end block 6, corresponding to the clamping block 13, and the clamping block 13 is located in the strip groove, wherein the clamping block 13 is used as a limiting structure at the end of the locking screw 10, and the relative positioning between the locking screw 10 and the locking positioning block 7 is achieved by cooperating with the clamping block 13 and the strip groove.

[0033] The locking end block 6 and the locking positioning block 7 are configured as wedge-shaped structures at one end away from the clamp body 1, wherein the wedge-shaped structure can be convenient for the user to pinch and exert force.

[0034] The number of the cutting grooves 3 can be adjusted according to actual use requirements. In this solution, the number of the cutting grooves 3 is four.

[0035] Working principle:

[0036] When it is necessary to lock the mounting point of the cranial head frame, the clamp body 1 is sleeved on the outside of the core ring body 2. During the sleeve process, the anti-slip block 4 is made to correspond to the avoidance groove 8 to ensure smooth installation of the two. After the sleeve is completed, the anti-slip block 4 and the avoidance groove 8 are staggered to avoid the clamp body 1 from falling off the core ring body 2. Then, the core ring body 2 is sleeved on the mounting point of the cranial head frame, and then the locking knob 11 is rotated to make the locking end block 6 and the locking positioning block 7 approach each other, so that the inner diameter of the clamp body 1 is reduced to squeeze the core ring body 2. During the extrusion process, under the action of the cutting groove 3, the inner diameter of the core ring body 2 is reduced and elastic deformation is produced to achieve the locking effect. This locking method can effectively increase the reliability of the locking and will not loosen.

[0037] The beneficial effect of the utility model is that a sleeve ring mechanism is provided, which together with the clamp body constitutes a double locking structure, and a cutting groove is arranged on the core ring body, which can meet the deformation requirements of the core ring body, and cooperate with the locking mechanism, the core ring body can be squeezed by the clamp body to achieve elastic locking, thereby increasing the reliability of the locking device, avoiding loosening of the locking device, ensuring the surgical effect, and improving the safety of the locking device. An anti-slip mechanism is provided, which can relatively limit the clamp body and the sleeve ring mechanism to prevent the two from falling off during the locking process.

[0038] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A circular bayonet locking device, comprising a clamp body (1), wherein the side of the clamp body (1) is provided with an opening, characterized in that: It also includes a collar mechanism for forming an elastic limiting structure, an anti-drop mechanism for preventing the collar mechanism from falling off, and a locking mechanism for elastically locking the collar mechanism. The collar mechanism is arranged on the inner side of the clamp body (1), the anti-drop mechanism is arranged on the side of the collar mechanism, and the locking mechanism is assembled at the opening of the clamp body (1).

2. A circular bayonet locking device according to claim 1, characterized in that: The sleeve ring mechanism comprises a core ring body (2) and a cutting groove (3), wherein the core ring body (2) is arranged on the inner side of the clamp body (1) and is arranged concentrically with the clamp body (1), the clamp body (1) is sleeved with the core ring body (2), and the cutting groove (3) is provided with a plurality of groups, wherein the plurality of groups of the cutting grooves (3) are evenly spaced and arranged on the upper part of the core ring body (2) and penetrate the core ring body (2).

3. A circular bayonet locking device as claimed in claim 2, characterized in that: A flange structure is provided at the circumference of the upper end of the core ring body (2), and the flange structure is located outside the core ring body (2), and the inner wall of the core ring body (2) is arranged as a step-shaped structure.

4. A circular bayonet locking device as claimed in claim 3, characterized in that: The anti-slip mechanism comprises an anti-slip block (4) and an anti-slip base (5); the anti-slip block (4) is arranged at the upper end of the core ring body (2) and is fixedly connected to the core ring body (2); the anti-slip base (5) is arranged at the outer side of the lower end of the core ring body (2) and is fixedly connected to the core ring body (2); the anti-slip block (4) and the anti-slip base (5) are arranged correspondingly to form an anti-slip structure; and the side of the clamp body (1) is located between the anti-slip block (4) and the anti-slip base (5).

5. A circular bayonet locking device as claimed in claim 4, characterized in that: The locking mechanism comprises a locking end block (6), a locking positioning block (7) and a locking assembly. The locking end block (6) and the locking positioning block (7) are arranged opposite to each other at two sides of an opening of the clamp body (1) and are fixedly connected to the clamp body (1). The locking end block (6) and the locking positioning block (7) are integrally formed with a spacing therebetween. The locking assembly is arranged on the sides of the locking end block (6) and the locking positioning block (7) and penetrates the locking end block (6) and the locking positioning block (7).

6. A circular bayonet locking device as claimed in claim 5, characterized in that: It also includes an avoidance groove (8) and a deformation groove (9), wherein the avoidance groove (8) is arranged at the opening of the clamp body (1) and the avoidance groove (8) is arranged in the same shape as the anti-slip block (4), and the deformation groove (9) and the avoidance groove (8) are arranged adjacent to each other and the two are connected to form a spacing between the locking end block (6) and the locking positioning block (7).

7. A circular bayonet locking device as claimed in claim 6, characterized in that: The locking assembly comprises a locking screw (10) and a locking knob (11); the locking screw (10) is arranged on the side of the locking end block (6) and the locking positioning block (7) and penetrates the locking end block (6) and the locking positioning block (7); one end of the locking screw (10) is provided with an external thread; the locking knob (11) is arranged on a side of the locking end block (6) away from the locking positioning block (7) and the interior of the locking knob (11) is provided with an internal thread; the locking knob (11) is threadedly connected to the end of the locking screw (10) provided with the external thread.

8. A circular bayonet locking device as claimed in claim 7, characterized in that: It also comprises a washer (12), which is sleeved on the side of the locking screw (10) and located between the locking knob (11) and the locking end block (6).

9. A circular bayonet locking device as claimed in claim 8, characterized in that: A clamping block (13) is provided at one end of the locking screw (10) away from the locking knob (11), and the clamping block (13) is configured as a strip-shaped block structure. A strip groove is provided on one side of the locking positioning block (7) away from the locking end block (6) corresponding to the clamping block (13), and the clamping block (13) is located in the strip groove.

10. A circular bayonet locking device as claimed in claim 9, characterized in that: The locking end block (6) and the locking positioning block (7) are arranged at one end away from the clamp body (1) as a wedge-shaped structure.

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