Miniature single-side fixing frame for rats

By designing the adjustment and fixing mechanism and damping ring of the micro unilateral fixing frame of rats, the problem of unadjusted length of the Kercher's needle and uncontrollable pulling speed is solved, and the flexible adjustment of the Kercher's length and the uniform and stable adjustment of the pulling gap are achieved, reducing the risk of injury in rats.

CN223068637UActive Publication Date: 2025-07-08STOMATOLOGICAL HOSPITAL AFFILIATED TO SOUTHWEST MEDICAL UNIV
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Patent Information

Application Number
CN202421812175.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-30
Publication Date
2025-07-08
Estimated Expiration
2034-07-30

AI Technical Summary

Technical Problem

In the prior art, the installation length of the K-S-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N-N

Method used

A rat micro single-sided fixing frame is designed to control the fixed distance adjustment and constant speed rotation of the Khmer pin through the adjustment fixing mechanism and damping ring, including slider, sliding bottom clamp block, top clamp block, clamp slot, bolt, adjustment cap, scale slot and other components to realize the length adjustment of the Khmer pin and the constant speed rotation of the screw.

Benefits of technology

Flexible adjustment of Kerchner's length and uniform and stable adjustment of the tension gap are achieved, reducing the risk of injury in rats during the tension osteogenesis.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223068637U_ABST
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Abstract

The utility model relates to the technical field of rat distraction osteogenesis, in particular to a rat miniature single-side fixing frame which comprises a fixing seat, a sliding groove is formed in the upper surface of the fixing seat, a lead screw is rotationally connected to the interior of the fixing seat in a penetrating mode, and an adjusting and fixing mechanism is connected to the fixing seat in a sliding mode. According to the miniature single-side fixing frame for the rat, the sliding groove is formed in the upper surface of the fixing base, the top of the sliding block slidably connected in the sliding groove is connected with the sliding bottom clamping block and the top clamping block through bolts, and meanwhile, a kirschner wire is clamped and fixed between the sliding bottom clamping block and the top clamping block, so that the lower limb bone of the rat can be conveniently punctured and fixed; a lead screw rotationally connected in the sliding groove is connected with the damping ring, and a rotating head is further arranged at the outer end of the lead screw so that the positions of the sliding bottom clamping block, the top clamping block and the kirschner wire can be adjusted when the lead screw is rotated, and then the stretching gap can be adjusted according to the lower limb bone of the rat.
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Description

Technical Field

[0001] The utility model relates to the technical field of rat distraction osteogenesis, in particular to a rat micro unilateral fixator. Background Technique

[0002] The definition of distraction osteogenesis is an endogenous bone tissue engineering technology. It is achieved by cutting the bone, placing a special distractor on both sides of the osteotomy line. After a certain delay period, the osteotomy gap is slowly distracted, stimulating the potential of the body tissue regeneration. New bone tissue is continuously formed in the distraction gap, and at the same time, the muscles, nerves, blood vessels, skin, etc. around the bone are lengthened synchronously, so as to achieve the purpose of bone lengthening.

[0003] The prior art does not have the structure for adjusting the use distance of Kirschner wires and stably distracting and adjusting rats when in use. When the prior art is used for distraction osteogenesis of rat lower limb bones, the installation length of the Kirschner wires is mostly a fixed value, and the use length cannot be adjusted according to the different body sizes of rats. And when using the fixator to adjust the distraction distance, although the lead screw can be rotated to adjust, the rotation speed of the lead screw cannot be limited, which is very likely to cause the distance adjustment to be too fast and result in injury to the rats. Based on the deficiencies of the existing technology, the utility model designs a rat micro unilateral fixator. Content of the Utility Model

[0004] In view of the deficiencies of the prior art, the utility model provides a rat micro unilateral fixator, which has the advantages of adjusting the use distance of Kirschner wires and stably distracting and adjusting rats.

[0005] The utility model provides the following technical scheme: a rat micro unilateral fixator, including a fixed seat, a chute is opened on the upper surface of the fixed seat, a lead screw is rotatably connected through the inside of the fixed seat, and an adjusting and fixing mechanism is slidably connected to the fixed seat;

[0006] The adjusting and fixing mechanism includes a slider, a sliding bottom clamp block, a second clamping groove, a top clamp block, a gasket, a bolt, an adjusting cap, a Kirschner wire, a screw groove, a scale groove and a fixed bottom clamp block. The slider is slidably connected in the chute, the sliding bottom clamp block is fixedly connected to the upper surface of the slider, the second clamping groove is opened on the upper surface of the sliding bottom clamp block, the top clamp block is arranged on the upper surface of the sliding bottom clamp block, the gasket is arranged on the upper surface of the top clamp block, the bolt is inserted through the top clamp block, the adjusting cap is fixedly inserted into the inside of the second clamping groove, the Kirschner wire is threadedly connected to the inside of the adjusting cap, the screw groove is opened on the side wall of the Kirschner wire, the scale groove is arranged on the side wall of the Kirschner wire, and the fixed bottom clamp block is fixedly connected to the upper surface of one end of the fixed seat.

[0007] As a preferred technical solution of the utility model, one end of the screw rod is fixedly connected to a rotating head, a slot 1 is provided on the screw rod, and a damping ring is fixedly installed on one end of the fixing seat.

[0008] As a preferred technical solution of the utility model, the screw rod is rotatably connected to the inside of the slide groove.

[0009] As a preferred technical solution of the utility model, the clamping groove is penetrated and clamped in the damping ring, and the screw rod is rotatably connected with the damping ring.

[0010] As a preferred technical solution of the utility model, the slider is threadedly slidably connected to the screw rod, the second slot is also opened on the lower surface of the top clamping block, the gasket is arranged between the bolt and the top clamping block, the bolt passes through the top clamping block and is threadedly connected to the sliding bottom clamping block, the adjusting cap is clamped and fixed between the sliding bottom clamping block and the top clamping block, the Kirschner wire is clamped and fixed between the sliding bottom clamping block and the top clamping block, and the screw groove is threadedly connected to the adjusting cap.

[0011] As a preferred technical solution of the utility model, the second clamping slot is also opened on the upper surface of the fixed bottom clamping block, and the top clamping block, gasket, bolt, adjustment cap and Kirschner wire are also arranged on the upper surface of the fixed bottom clamping block.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The invention discloses a rat micro unilateral fixing frame. The bolt is rotated in the opposite direction to expand the distance between the sliding bottom clamp block and the top clamp block, and the Kirschner wire and the adjusting cap are removed. Then, the adjusting cap is rotated according to the body shape of the rat to observe the scale groove to control the use length. After the adjustment of the adjusting cap is completed, multiple groups of adjusting caps are placed between the sliding bottom clamp block and the top clamp block, and the bolts are tightened to clamp and fix them. The adjusting caps are connected to the rat lower limb bones by using the Kirschner wires. After the connection is completed, the rotating head is rotated to drive the screw rod to rotate accordingly. Since a clamping groove one is provided on the surface of the screw rod, and the clamping groove one is connected to a damping ring, the damping ring can control the screw rod to rotate at a uniform speed when the rotating head drives the screw rod to rotate. At this time, the screw rod rotating at a uniform speed drives the sliding bottom clamp block and the top clamp block to move and stably adjust the distraction gap by using a slider. The device is convenient for uniformly and stably adjusting the distraction gap of the rat lower limb bones. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the fixing seat of the utility model when viewed from above;

[0016] Figure 3 This is a schematic diagram of the screw rod structure of the utility model;

[0017] Figure 4 Explosion structure schematic diagram of the adjusting and fixing mechanism of the present utility model;

[0018] Figure 5 Structure schematic diagram of the Kirschner wire and adjusting cap of the present utility model.

[0019] In the figure: 1, fixed seat; 101, chute; 2, lead screw; 201, turning head; 202, first card slot; 203, damping ring; 3, adjusting and fixing mechanism; 301, slider; 302, sliding bottom clamping block; 303, second card slot; 304, top clamping block; 305, gasket; 306, bolt; 307, adjusting cap; 308, Kirschner wire; 309, thread groove; 310, scale groove; 311, fixed bottom clamping block. Specific implementation manners

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-5 , a rat micro unilateral fixing frame, including a fixed seat 1, a chute 101 is opened on the upper surface of the fixed seat 1, a lead screw 2 is rotatably connected through the inside of the fixed seat 1, and an adjusting and fixing mechanism 3 is slidably connected to the fixed seat 1;

[0022] Please refer to Figures 4-5, adjust the fixing mechanism 3. The fixing mechanism 3 includes a slider 301, a sliding bottom clamping block 302, a second clamping groove 303, a top clamping block 304, a gasket 305, a bolt 306, an adjusting cap 307, a Kirschner wire 308, a screw groove 309, a scale groove 310 and a fixed bottom clamping block 311. The slider 301 is slidably connected in the sliding groove 101. The sliding bottom clamping block 302 is fixedly connected to the upper surface of the slider 301. The second clamping groove 303 is opened on the upper surface of the sliding bottom clamping block 302. The top clamping block 304 is arranged on the upper surface of the sliding bottom clamping block 302. The gasket 305 is arranged on the upper surface of the top clamping block 304. The bolt 306 is inserted through the top clamping block 304. The adjusting cap 307 is fixedly inserted inside the second clamping groove 303. The Kirschner wire 308 is threadedly connected inside the adjusting cap 307. The screw groove 309 is opened on the side wall of the Kirschner wire 308. The scale groove 310 is arranged on the side wall of the Kirschner wire 308. The fixed bottom clamping block 311 is fixedly connected to the upper surface of one end of the fixed seat 1. The slider 301 is threadedly slidably connected to the lead screw 2. The second clamping groove 303 is also opened on the lower surface of the top clamping block 304. The gasket 305 is arranged between the bolt 306 and the top clamping block 304. The bolt 306 passes through the top clamping block 304 and is threadedly connected to the sliding bottom clamping block 302. The adjusting cap 307 is clamped and fixed between the sliding bottom clamping block 302 and the top clamping block 304. The Kirschner wire 308 is clamped and fixed between the sliding bottom clamping block 302 and the top clamping block 304. The screw groove 309 is threadedly connected to the adjusting cap 307. The second clamping groove 303 is also opened on the upper surface of the fixed bottom clamping block 311. The top clamping block 304, the gasket 305, the bolt 306, the adjusting cap 307 and the Kirschner wire 308 are also arranged on the upper surface of the fixed bottom clamping block 311.

[0023] By providing the Kirschner wire 308, it is convenient to connect and fix with the lower limb bone of the rat for the distraction gap. By providing the sliding bottom clamping block 302, the second clamping groove 303, the top clamping block 304, the gasket 305 and the bolt 306, it is convenient to clamp and fix the Kirschner wire 308. By providing the adjusting cap 307, the screw groove 309 and the scale groove 310, it is convenient to adjust the use length of the Kirschner wire 308, and at the same time, the use lengths of multiple Kirschner wires 308 can be made equal.

[0024] Please refer to Figure 3 , one end of the lead screw 2 is fixedly connected with a turning head 201. A first clamping groove 202 is opened on the lead screw 2. One end of the fixed seat 1 is fixedly installed with a damping ring 203. The lead screw 2 is rotatably connected inside the sliding groove 101. The first clamping groove 202 is penetrated and clamped inside the damping ring 203. The lead screw 2 is rotatably connected with the damping ring 203.

[0025] By setting the lead screw 2, it is convenient to control the left - right horizontal movement of the adjusting and fixing mechanism 3, thereby adjusting the distraction gap of the rat's lower limb bone. By setting the rotating head 201 and having an arrow on the outer side of the rotating head 201, it is convenient to drive the rotation of the lead screw 2 and to know the number of turns of the lead screw 2. By setting the first slot 202 and the damping ring 203, it is convenient to control the rotation speed of the rotating lead screw 2 to prevent the rotating speed of the lead screw 2 from being too fast, which may cause the adjusting and fixing mechanism 3 to move too fast and injure the rat.

[0026] Working principle: When a rat micro unilateral fixator is in use, in the initial state, first, the chute 101 is opened on the upper surface of the fixed seat 1. The top of the slider 301 slidably connected in the chute 101 is connected with a sliding bottom clamp block 302 and a top clamp block 304 and is connected by a bolt 306. At the same time, a Kirschner wire 308 is clamped and fixed between the sliding bottom clamp block 302 and the top clamp block 304 to facilitate the puncture fixation of the rat's lower limb bone. The lead screw 2 rotatably connected in the chute 101 is connected to the damping ring 203, and a rotating head 201 is also provided at the outer end of the lead screw 2 to facilitate adjusting the positions of the sliding bottom clamp block 302, the top clamp block 304, and the Kirschner wire 308 when rotating the lead screw 2, and then adjusting the distraction gap according to the rat's lower limb bone.

[0027] When it is necessary to adjust the distraction gap of the rat's lower limb bone evenly and stably, first, reverse - rotate the bolt 306 to expand the distance between the sliding bottom clamp block 302 and the top clamp block 304, remove the Kirschner wire 308 and the adjusting cap 307. Then, rotate the adjusting cap 307 according to the rat's body size, observe the scale groove 310 to control the use length. After the adjustment of the adjusting cap 307 is completed, place multiple groups of adjusting caps 307 between the sliding bottom clamp block 302 and the top clamp block 304 again, tighten the bolt 306 to clamp and fix, and connect with the rat's lower limb bone using the Kirschner wire 308. After the connection is completed, rotate the rotating head 201 to drive the lead screw 2 to rotate accordingly. Since the first slot 202 is provided on the surface of the lead screw 2 and the first slot 202 is connected to the damping ring 203, it is convenient for the damping ring 203 to control the lead screw 2 to rotate at a constant speed when the rotating head 201 drives the lead screw 2 to rotate. At this time, the lead screw 2 rotating at a constant speed drives the sliding bottom clamp block 302 and the top clamp block 304 to move through the slider 301 to stably adjust the distraction gap. This device is convenient for evenly and stably adjusting the distraction gap of the rat's lower limb bone.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rat micro unilateral fixing frame, comprising a fixing base (1), characterized in that: A chute (101) is provided on the upper surface of the fixed seat (1). A lead screw (2) is rotatably connected through the interior of the fixed seat (1). An adjusting and fixing mechanism (3) is slidably connected to the fixed seat (1). Adjusting and fixing mechanism (3), the adjusting and fixing mechanism (3) includes a slider (301), a sliding bottom clamping block (302), a second card slot (303), a top clamping block (304), a gasket (305), a bolt (306), an adjusting cap (307), a Kirschner wire (308), a thread groove (309), a scale groove (310) and a fixed bottom clamping block (311). The slider (301) is slidably connected in the chute (101). The sliding bottom clamping block (302) is fixedly connected to the upper surface of the slider (301). The second card slot (303) is provided on the upper surface of the sliding bottom clamping block (302). The top clamping block (304) is arranged on the upper surface of the sliding bottom clamping block (302). The gasket (305) is arranged on the upper surface of the top clamping block (304). The bolt (306) is inserted through the top clamping block (304). The adjusting cap (307) is fixedly inserted into the interior of the second card slot (303). The Kirschner wire (308) is threadedly connected to the interior of the adjusting cap (307). The thread groove (309) is provided on the side wall of the Kirschner wire (308). The scale groove (310) is arranged on the side wall of the Kirschner wire (308). The fixed bottom clamping block (311) is fixedly connected to the upper surface of one end of the fixed seat (1).

2. The rat micro unilateral fixing bracket according to claim 1, characterized in that: One end of the lead screw (2) is fixedly connected to a turning head (201). A first card slot (202) is provided on the lead screw (2). A damping ring (203) is fixedly installed at one end of the fixed seat (1).

3. A miniature unilateral fixation device for rats according to claim 2, characterized in that: The lead screw (2) is rotatably connected to the interior of the chute (101).

4. A miniature unilateral fixation rack for rats according to claim 2, wherein: The first card slot (202) is inserted through and clamped in the damping ring (203). The lead screw (2) is rotatably connected to the damping ring (203).

5. A kind of rat micro unilateral fixing frame according to claim 1, characterized in that: The slider (301) is threadedly and slidably connected to the lead screw (2). The second card slot (303) is also provided on the lower surface of the top clamping block (304). The gasket (305) is arranged between the bolt (306) and the top clamping block (304). The bolt (306) passes through the top clamping block (304) and is threadedly connected to the sliding bottom clamping block (302). The adjusting cap (307) is clamped and fixed between the sliding bottom clamping block (302) and the top clamping block (304). The Kirschner wire (308) is clamped and fixed between the sliding bottom clamping block (302) and the top clamping block (304). The thread groove (309) is threadedly connected to the adjusting cap (307).

6. A rat micro unilateral fixator according to claim 1, characterized in that: The second card slot (303) is also provided on the upper surface of the fixed bottom clamping block (311). The top clamping block (304), the gasket (305), the bolt (306), the adjusting cap (307) and the Kirschner wire (308) are also arranged on the upper surface of the fixed bottom clamping block (311).