An external fixation bracket for a calcaneus fixation system

Abstract

The utility model discloses a kind of external fixation support of calcaneus fixation system, it is related to medical instrument technical field, including first support, first mobile needle clamp, swing needle clamp, second support and second mobile needle clamp, first support is equipped with first sliding slot, one end of first mobile needle clamp is slid in the inside of first sliding slot, swing needle clamp is rotatably connected in one end of first support, second support is rotatably connected in one end of first support top, by first mobile needle clamp, swing needle clamp and second mobile needle clamp to the clamping fixation of steel needle, and second mobile needle clamp can be moved along second support and be adjusted, first mobile needle clamp can be moved along first support and be adjusted, second mobile needle clamp and second support can be swung along locking bolt, nut axis swing adjustment;Swing needle clamp can be swung and adjusted along one end of first support rotatable connection, can be flexibly adjusted according to the position and angle of needle insertion.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to an external fixation bracket for a calcaneal fixation system. Background Technology

[0002] The calcaneus is the largest tarsal bone in the human body, with an irregular shape and numerous articular surfaces. Calcaneal fractures account for 60% of tarsal fractures and 2% of all fractures; 7%–15% of calcaneal fractures are bilateral, and 60%–75% are intra-articular fractures; 70% of patients have concurrent injuries, and over 90% are young adult males. Due to the complex anatomical structure of the calcaneus and surrounding tissues, the thin soft tissues near the heel, and poor blood supply, injuries easily involve the articular surfaces. Improper treatment leads to a high incidence of complications and often leaves sequelae, severely impacting the patient's quality of life. Therefore, the treatment of calcaneal fractures remains challenging.

[0003] Existing calcaneal external fixation devices on the market are not easy to adjust and have complex structures, making maintenance inconvenient. Therefore, this utility model provides an external fixation device for a calcaneal fixation system. Utility Model Content

[0004] The purpose of this invention is to provide an external fixation bracket for a calcaneal fixation system to solve the problems raised in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an external fixation bracket for a calcaneal fixation system, comprising a first bracket, a first movable pin clamp, a swing pin clamp, a second bracket, and a second movable pin clamp. The first bracket has a first sliding groove, one end of the first movable pin clamp slides inside the first sliding groove, the swing pin clamp is rotatably connected to one end of the first bracket, the second bracket is rotatably connected to one end of the top of the first bracket, the second bracket and the first bracket are connected by a locking bolt, one end of the locking bolt is fitted with a locking nut, a second sliding groove is provided on one side of the second bracket, and one end of the second movable pin clamp slides inside the second sliding groove.

[0006] Preferably, the first movable needle clamp includes a first fixed clamping block, a first movable clamping block, and a first connecting bolt. The first fixed clamping block and the first movable clamping block are connected by the first connecting bolt to combine and connect the first fixed clamping block and the first movable clamping block to clamp and fix the fixed needle.

[0007] Preferably, a sliding block is fixedly connected to the bottom of the first fixed clamping block, the sliding block is slidably connected inside the first sliding groove, a top sliding groove is opened on the top of the sliding block, a sliding plate is slidably connected inside the top sliding groove, a movable insert rod is fixedly connected to the bottom of the sliding plate, one end of the movable insert rod extends to the bottom of the sliding block, a fixing hole adapted to the movable insert rod is opened on the inner bottom wall of the first sliding groove, and one end of the movable insert rod is inserted into the fixing hole. When the first connecting bolt combines and connects the first fixed clamping block and the first connecting bolt, one end of the first connecting bolt squeezes the sliding plate and pushes the movable insert rod into the fixing hole to restrict the sliding of the first movable needle clamp on the first bracket and fix the position of the first movable needle clamp.

[0008] Preferably, one end of the first connecting bolt is abutted against the top of the sliding plate, and a spring is provided at the bottom of the sliding plate. The spring is sleeved on the movable insert rod. Under the action of the spring and the sliding plate, the movable insert rod is quickly pulled out from the inside of the fixing hole when one end is not under force.

[0009] Preferably, the swing needle clamp includes a third fixed clamping block, a third movable clamping block, and a third connecting bolt. One end of the third fixed clamping block is rotatably connected to one end of the first bracket. The third fixed clamping block and the third movable clamping block are connected by the third connecting bolt. The third fixed clamping block and the third movable clamping block are combined and connected by the third connecting bolt to clamp and fix the fixed needle.

[0010] Preferably, the second movable needle clamp includes a second fixed clamping block, a second movable clamping block, and a second connecting bolt. The second fixed clamping block and the second movable clamping block are connected by the second connecting bolt. One end of the second fixed clamping block is fixedly connected to a connecting sleeve, which slides inside the second slide groove. The second fixed clamping block and the second movable clamping block are connected and combined together by the provided second connecting bolt to clamp the fixed needle.

[0011] Preferably, a lead screw nut is fixedly connected to the bottom of the connecting sleeve, and an adjusting lead screw is rotatably connected inside the second sliding groove. The connecting sleeve is sleeved around the adjusting lead screw, and the lead screw nut is threaded onto the adjusting lead screw. By rotating the adjusting lead screw, the second movable needle clamp is driven to move up and down on one side of the second bracket under the action of the lead screw nut.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This application uses a first movable needle clamp, a swing needle clamp, and a second movable needle clamp to clamp and fix the steel needle. The second movable needle clamp can be moved and adjusted along the second bracket, the first movable needle clamp can be moved and adjusted along the first bracket, and the second movable needle clamp and the second bracket can be swung and adjusted along the axis of the locking bolt and nut. The swing needle clamp can be swung and adjusted along one end of the first bracket at the rotating connection point, and can be flexibly adjusted according to the position and angle of the needle.

[0014] 2. This application restricts the rotation of the second bracket on the top of the first bracket by setting locking bolts and locking nuts. By rotating the adjusting screw inside the second slide groove, the connecting sleeve is driven to move up and down inside the second slide groove, thereby controlling the second moving needle clamp to move up and down on one side of the second bracket. By controlling one end of the movable insert rod to be pulled out from the inside of the fixed hole, the sliding block slides inside the first slide groove, so that the first moving needle clamp can move and adjust along the first bracket. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural view of an external fixation bracket for a calcaneal fixation system according to the present invention.

[0016] Figure 2 This is a schematic diagram of the external fixation bracket of the calcaneal fixation system of this utility model;

[0017] Figure 3 This is a schematic diagram of the first movable pin clip structure of the external fixation bracket of the calcaneal fixation system of this utility model;

[0018] Figure 4 This is a schematic diagram of the swing pin clip structure of the external fixation bracket of the calcaneal fixation system of this utility model.

[0019] Figure 5 This is a schematic diagram of the second movable pin clip structure of the external fixation bracket of the calcaneal fixation system of this utility model;

[0020] Figure 6 This is a perspective view of the sliding block structure of the external fixation bracket of the calcaneal fixation system of this utility model;

[0021] Figure 7 This is a top view of the first bracket of the external fixation bracket of the calcaneal fixation system of this utility model.

[0022] The following are the labeling elements in the diagram: 1. First bracket; 11. First slide groove; 12. Fixing hole; 2. First movable needle clamp; 21. First fixed clamp block; 22. First movable clamp block; 23. First connecting bolt; 24. Sliding block; 25. Top slide groove; 26. Sliding plate; 27. Movable insert rod; 3. Swinging needle clamp; 31. Third fixed clamp block; 32. Third movable clamp block; 33. Third connecting bolt; 4. Second bracket; 41. Second slide groove; 5. Second movable needle clamp; 51. Second fixed clamp block; 52. Second movable clamp block; 53. Second connecting bolt; 54. Connecting sleeve; 55. Lead screw nut; 7. Adjusting lead screw. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 An external fixation bracket for a calcaneal fixation system includes a first bracket 1, a first movable pin clamp 2, a swing pin clamp 3, a second bracket 4, and a second movable pin clamp 5. The first bracket 1 has a first sliding groove 11. One end of the first movable pin clamp 2 slides inside the first sliding groove 11. By controlling the sliding of the first movable pin clamp 2 inside the first sliding groove 11, the first movable pin clamp 2 can be adjusted back and forth horizontally. The main body of the device is made of carbon fiber, which can be visualized in X-rays. Each component has a light-transmitting hole, which is convenient for X-ray film reference positioning.

[0025] Please refer to it again. Figure 1 , Figure 2 , Figure 3 and Figure 6The first movable needle clamp 2 includes a first fixed clamping block 21, a first movable clamping block 22, and a first connecting bolt 23. The first fixed clamping block 21 and the first movable clamping block 22 are connected by the first connecting bolt 23. The first fixed clamping block 21 and the first movable clamping block 22 are combined and connected by the first connecting bolt 23. Two clamping grooves are opened on the side of the first fixed clamping block 21 and the first movable clamping block 22 that are close to each other. An elastic component is installed inside a set of clamping grooves, so that the two needles clamped by the same needle clamp can be at a maximum angle of 15°. A sliding block 24 is fixedly connected to the bottom of the first fixed clamping block 21. The sliding block 24 is slidably connected inside the first sliding groove 11. Under the action of the sliding block 24, the first movable needle clamp 2 slides horizontally on the top of the first bracket 1.

[0026] Please refer to it again. Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7 The top of the sliding block 24 is provided with a top sliding groove 25, and a sliding plate 26 is slidably connected inside the top sliding groove 25. A movable insert rod 27 is fixedly connected to the bottom of the sliding plate 26. One end of the movable insert rod 27 extends to the bottom of the sliding block 24. The inner bottom wall of the first sliding groove 11 is provided with a fixing hole 12 that matches the movable insert rod 27. One end of the movable insert rod 27 is inserted into the inside of the fixing hole 12. By inserting one end of the movable insert rod 27 into the inside of the fixing hole 12, the sliding block 24 is restricted to slide inside the fixing hole 12, thereby fixing the position of the first movable needle clip 2 at the top of the first bracket 1. The maximum movable distance is 30mm.

[0027] Please refer to it again. Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7 One end of the first connecting bolt 23 abuts against the top of the sliding plate 26. The bottom of the sliding plate 26 is provided with a spring, which is sleeved on the movable insert rod 27. When the first connecting bolt 23 installs the first movable clamping block 22 on the top of the first fixed clamping block 21, one end of the first connecting bolt 23 presses the sliding plate 26 down, pushing the movable insert rod 27 into the interior of the fixed hole 12, completing the combination of the first fixed clamping block 21 and the first movable clamping block 22 and restricting the sliding of the first movable needle clamp 2. By removing the first connecting bolt 23, the spring rebound drives the movable insert rod 27 to be pulled out from the interior of the fixed hole 12.

[0028] Please refer to it again. Figure 1 , Figure 2 and Figure 4The swing needle clamp 3 is rotatably connected to one end of the first bracket 1. The swing needle clamp 3 includes a third fixed clamping block 31, a third movable clamping block 32 and a third connecting bolt 33. One end of the third fixed clamping block 31 is rotatably connected to one end of the first bracket 1. The third fixed clamping block 31 and the third movable clamping block 32 are connected by the third connecting bolt 33. The third fixed clamping block 31 and the third movable clamping block 32 are combined and connected by the third connecting bolt 33. The swing needle clamp 3 can be swing-adjusted at one end of the first bracket 1, swinging 50° to the left and right. The swing needle clamp 3 has the same clamping mechanism as the first movable needle clamp 2.

[0029] Please refer to it again. Figure 1 , Figure 2 and Figure 5 The second bracket 4 is rotatably connected to one end of the top of the first bracket 1. The second bracket 4 and the first bracket 1 are connected by a locking bolt. A locking nut is installed at one end of the locking bolt. A second slide groove 41 is provided on one side of the second bracket 4. One end of the second movable needle clamp 5 slides inside the second slide groove 41. The second bracket 4 and the second movable needle clamp 5 can swing 116° along the axis of the locking bolt and the locking nut, and the tilt angle of the second bracket 4 is fixed by the action of the locking bolt and the locking nut.

[0030] Please refer to it again. Figure 1 , Figure 2 and Figure 5 The second movable needle clamp 5 includes a second fixed clamping block 51, a second movable clamping block 52, and a second connecting bolt 53. The second fixed clamping block 51 and the second movable clamping block 52 are connected by the second connecting bolt 53 to combine and connect the second fixed clamping block 51 and the second movable clamping block 52. One end of the second fixed clamping block 51 is fixedly connected to a connecting sleeve 54, which slides inside the second slide groove 41. The bottom of the connecting sleeve 54 is fixedly connected to a screw nut 55. An adjusting screw 7 is rotatably connected inside the second slide groove 41. The connecting sleeve 54 is sleeved around the adjusting screw 7, and the screw nut 55 is threaded onto the adjusting screw 7. By rotating the adjusting screw 7, the second movable needle clamp 5 is controlled to move up and down on one side of the second bracket 4 under the action of the screw nut 55 and the connecting sleeve 54. The maximum distance that the second movable needle clamp 5 can move is 16mm. The clamping mechanism of the second movable needle clamp 5 is the same as that of the first movable needle clamp 2.

[0031] Working principle: By rotating the adjusting screw 7, the second movable needle clamp 5 can be moved and adjusted along the second bracket 4 under the action of the connecting sleeve 54 and the screw nut 55. By controlling the sliding block 24 to slide inside the first slide groove 11, the first movable needle clamp 2 can be moved and adjusted along the first bracket 1. The second movable needle clamp 5 and the second bracket 4 can be oscillated and adjusted along the axis of the locking bolt and nut. The swinging needle clamp 3 can be oscillated and adjusted along one end of the rotating connection of the first bracket 1. It can be flexibly adjusted according to the position and angle of the needle. The steel needle is clamped and fixed by the first movable needle clamp 2, the swinging needle clamp 3 and the second movable needle clamp 5. During the process of the first connecting bolt 23 combining and connecting the first fixed clamp 21 and the first movable clamp 22, the top of the sliding plate 26 is squeezed to push one end of the movable insert rod 27 into the fixed hole 12 to restrict the sliding block 24 from sliding inside the first slide groove 11, thus completing the fixation of the position of the first movable needle clamp 2.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An external fixator for a calcaneal fixation system, characterized in that: The device includes a first support (1), a first movable needle clamp (2), a swing needle clamp (3), a second support (4), and a second movable needle clamp (5). The first support (1) has a first sliding groove (11). One end of the first movable needle clamp (2) slides inside the first sliding groove (11). The swing needle clamp (3) is rotatably connected to one end of the first support (1). The second support (4) is rotatably connected to one end of the top of the first support (1). The second support (4) and the first support (1) are connected by a locking bolt. One end of the locking bolt is fitted with a locking nut. One side of the second support (4) has a second sliding groove (41). One end of the second movable needle clamp (5) slides inside the second sliding groove (41).

2. The external fixation bracket of the calcaneal fixation system according to claim 1, characterized in that: The first movable needle clamp (2) includes a first fixed clamping block (21), a first movable clamping block (22) and a first connecting bolt (23), and the first fixed clamping block (21) and the first movable clamping block (22) are connected by the first connecting bolt (23).

3. The external fixation bracket of the calcaneal fixation system according to claim 2, characterized in that: The bottom of the first fixed clamping block (21) is fixedly connected to a sliding block (24), the sliding block (24) is slidably connected inside the first sliding groove (11), the top of the sliding block (24) is provided with a top sliding groove (25), the inside of the top sliding groove (25) is slidably connected to a sliding plate (26), the bottom of the sliding plate (26) is fixedly connected to a movable insert rod (27), one end of the movable insert rod (27) extends to the bottom of the sliding block (24), the inner bottom wall of the first sliding groove (11) is provided with a fixing hole (12) that matches the movable insert rod (27), and one end of the movable insert rod (27) is inserted into the inside of the fixing hole (12).

4. The external fixator of the calcaneal fixation system according to claim 3, characterized in that: One end of the first connecting bolt (23) abuts against the top of the sliding plate (26), and the bottom of the sliding plate (26) is provided with a spring, which is sleeved on the movable insert rod (27).

5. The external fixator of the calcaneal fixation system according to claim 1, characterized in that: The swinging needle clamp (3) includes a third fixed clamping block (31), a third movable clamping block (32) and a third connecting bolt (33). One end of the third fixed clamping block (31) is rotatably connected to one end of the first bracket (1), and the third fixed clamping block (31) and the third movable clamping block (32) are connected by the third connecting bolt (33).

6. The external fixator of the calcaneal fixation system according to claim 1, characterized in that: The second movable needle clamp (5) includes a second fixed clamping block (51), a second movable clamping block (52), and a second connecting bolt (53). The second fixed clamping block (51) and the second movable clamping block (52) are connected by the second connecting bolt (53). One end of the second fixed clamping block (51) is fixedly connected to a connecting sleeve (54), which slides inside the second slide groove (41).

7. The external fixator of the calcaneal fixation system according to claim 6, characterized in that: The bottom of the connecting sleeve (54) is fixedly connected to a screw nut (55), and the interior of the second slide groove (41) is rotatably connected to an adjusting screw (7). The connecting sleeve (54) is sleeved around the adjusting screw (7), and the screw nut (55) is threaded onto the adjusting screw (7).

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