Fracture reduction kirschner wire fixing guider

Abstract

The invention relates to the technical field of medical instruments, in particular to a fracture reduction kirschner wire fixing guider which comprises an outer sleeve, a handle is fixedly connected to the lower end of the outer sleeve, a movable rod is movably connected into the handle, and an adjusting assembly is arranged in the outer sleeve. Through the arrangement of the adjusting assembly, the trigger is indirectly pressed to drive the movable rod to move along the outer first movable groove, so that the abutting block at the front end of the movable rod is matched with the first reduction arm for clamping, the fixation of a fracture part is realized, the fracture reduction precision and the accuracy of selecting an inner fixing position are improved, and the operation is simple and convenient. The frequency of blind driving of the screw is reduced, and the treatment pain and economic burden of a patient are greatly relieved; through the arrangement of a limiting assembly, under the cooperation of a baffle, a second spring and third teeth, the movable rod is limited, the movable rod is prevented from moving, and the stability of the device is improved; and a universal structure is adopted, so that the medical cost is reduced, and the medical cost burden of a patient is relieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and specifically to a fracture reduction Kirschner wire fixation guide. Background Technique

[0002] When a doctor fixes a fracture, the bone must be reduced to its normal position before the formal operation can begin. The reduction of the bone requires the aid of special instruments; the bones in different parts of the human body vary greatly, and different pliers are needed for reduction, and there are many types. Currently, when treating pelvic fractures, intra-articular fractures and some long bone fractures, special reduction forceps are often required, and the versatility is very poor, causing inconvenience to the operation.

[0003] After retrieval, the patent application number is (202111158929.3), which discloses "a metacarpophalangeal fracture reduction Kirschner wire fixation guiding device", including: an outer sleeve tube, with an axial first through hole provided in the center thereof; an inner sleeve tube, which is axially movably arranged in the first through hole, the length of the inner sleeve tube is greater than the length of the outer sleeve tube, and an axial second through hole for the Kirschner wire to pass through is provided in the center of the inner sleeve tube; a connecting rod, the upper end of which is arranged at the lower part of the outer sleeve tube, the lower part of the connecting rod extends downward, and a pressing block is connected to the lower end of the connecting rod, and the pressing block faces the lower end surface of the inner sleeve tube; a first handle, which is arranged at the upper part of the outer sleeve tube; and a second handle, which is arranged at the upper end of the inner sleeve tube; wherein, the outer periphery of the inner sleeve tube matches the first through hole, and the second through hole matches the outer periphery of the Kirschner wire. The beneficial effect of the present invention is: an outer sleeve tube and an inner sleeve tube are provided, which can guide the Kirschner wire during the drilling process of the Kirschner wire; However, the following problems exist in the above device: the pressurization operation cannot be controlled, which is likely to cause surgical trauma, and continuous extrusion is required for fixation, and the versatility is poor. Therefore, we propose a fracture reduction Kirschner wire fixation guide to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a fracture reduction Kirschner wire fixation guide to solve the problems of uncontrollable pressurization operation, easy surgical trauma, continuous extrusion for fixation, and poor versatility proposed in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: a fracture reduction Kirschner wire fixation guide, including an outer sleeve tube, the lower end of the outer sleeve tube is fixedly connected with a handle, a movable rod is movably connected in the handle, and an adjustment assembly is arranged inside the outer sleeve tube; The adjusting assembly includes a first movable slot, a fixed slot, first teeth, a movable plate, a first spring, a first communication hole, a first communication hole, second teeth, a first rotating shaft, a trigger and a guiding block. A first movable slot is formed inside the outer sleeve. The movable rod passes through the outer sleeve along the first movable slot. A fixed slot is formed at the lower end of the movable rod. First teeth are fixedly connected equidistantly inside the fixed slot. A movable plate is arranged inside the first movable slot. A first spring is arranged on the inner side of the first movable slot. A first communication hole is formed inside the movable plate. Three groups of second teeth are arranged inside the first communication hole. A first rotating shaft is arranged on the inner wall of the first movable slot. A trigger is arranged on the outer side of the first rotating shaft. A guiding block is arranged at the upper end of the trigger.

[0006] Preferably, a limiting assembly is arranged on the outer side of the movable rod. The limiting assembly includes a fixed block, a second rotating shaft, a baffle, a second communication hole, a second movable slot, a second spring and third teeth. Two groups of fixed blocks are fixedly connected to the left end of the outer sleeve. A second rotating shaft is rotatably connected to the opposite sides of the two groups of fixed blocks. A baffle is fixedly connected to the outer side of the second rotating shaft. A second communication hole is formed inside the baffle. Three groups of third teeth are fixedly connected to the bottom of the second communication hole. The third teeth are meshed with the first teeth. A second movable slot is formed at the left end of the outer sleeve. A second spring is arranged inside the second movable slot. The two ends of the second spring are respectively connected to the second spring and the inner wall of the baffle.

[0007] Preferably, the movable plate is located on the left inner wall of the first movable slot. The movable rod passes through the first communication hole and is movably connected to the movable plate. The two ends of the first spring are respectively connected to the inner walls of the first movable slot and the movable plate. The second teeth are meshed with the first teeth and face in opposite directions. The front and rear ends of the first rotating shaft are rotatably connected to the inner wall of the first movable slot. The inner side of the trigger is fixedly connected to the first rotating shaft. The lower end of the guiding block is fixedly connected to the top of the trigger. The guiding block is triangular and is located on the left side of the movable plate. Torsion springs are arranged at the front and rear ends of the first rotating shaft. The two ends of the torsion springs are respectively connected to the first movable slot and the trigger.

[0008] Preferably, a resisting block is fixedly connected to the right end of the movable rod. Six positioning blocks are annularly and equidistantly installed on the right surface of the resisting block. A fixed head is fixedly connected to the left end of the movable rod.

[0009] Preferably, a guiding groove is formed at the central position of the movable rod. The diameter of the guiding groove is two millimeters.

[0010] Preferably, a connection hole is formed at the upper right end of the outer sleeve. A bolt is threadedly connected inside the connection hole. A connection frame is inserted into the right end of the outer sleeve. A first reset arm is fixedly connected to the right end of the connection frame.

[0011] Preferably, the right end of the outer sleeve can replace the second reset arm and the third reset arm, and the clamping grooves of the second reset arm and the third reset arm are adapted to the right end head of the outer sleeve.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Through the setting of the adjustment component, the present invention indirectly presses the trigger to drive the movable rod to move along the first outer movable groove, so that the abutting block at the front end of the movable rod cooperates with the first reset arm to clamp, thereby realizing the fixation of the fracture site, improving the accuracy of fracture reduction and the accuracy of selecting the internal fixation position, reducing the number of blind screw insertions, and greatly reducing the treatment pain and economic burden of patients.

[0013] 2. Through the setting of the limiting component, the present invention limits the movable rod under the cooperation of the baffle plate, the second spring and the third tooth, preventing the movable rod from shifting and improving the stability of the device.

[0014] 3. Through the setting of the connection hole and the bolt, and combining the first reset arm, the second reset arm or the third reset arm according to requirements at the same time, the present invention adopts a general structure to reduce the medical cost and relieve the medical expense burden of patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a front view structural schematic diagram of the present invention; Figure 2 For the present invention Figure 1 It is a structural sectional schematic diagram of the outer sleeve in the present invention; Figure 3 For the present invention Figure 1 It is a structural sectional schematic diagram of the movable rod in the present invention; Figure 4 It is a structural schematic diagram of the second reset arm of the present invention; Figure 5 It is a structural schematic diagram of the third reset arm of the present invention; Figure 6 For the present invention Figure 2 It is a partial enlarged schematic diagram of A in the present invention; Figure 7 For the present invention Figure 2 It is a partial enlarged schematic diagram of B in the present invention.

[0017] In the figure: 1. Outer sleeve; 2. Handle; 3. Movable rod; 4. Adjusting component; 401. First movable groove; 402. Fixed groove; 403. First tooth; 404. Movable plate; 405. First spring; 406. First communication hole; 407. Second tooth; 408. First rotating shaft; 409. Trigger; 410. Guide block; 5. Limiting component; 501. Fixed block; 502. Second rotating shaft; 503. Baffle; 504. Second communication hole; 505. Second movable groove; 506. Second spring; 507. Third tooth; 6. Block; 7. Positioning block; 8. Fixed head; 9. Guide groove; 10. Connection hole; 11. Bolt; 12. Connection frame; 13. First reset arm; 14. Second reset arm; 15. Third reset arm. Specific embodiments

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figure 1-7 , an embodiment provided by the present invention: a fracture reduction Kirschner wire fixing guide, including an outer sleeve 1, a handle 2 is fixedly connected to the lower end of the outer sleeve 1, a movable rod 3 is movably connected inside the handle 2, and an adjusting component 4 is arranged inside the outer sleeve 1; The adjusting component 4 includes a first movable groove 401, a fixed groove 402, a first tooth 403, a movable plate 404, a first spring 405, a first communication hole 406, a first communication hole 406, a second tooth 407, a first rotating shaft 408, a trigger 409 and a guide block 410. A first movable groove 401 is opened inside the outer sleeve 1, the movable rod 3 passes through the outer sleeve 1 along the first movable groove 401, a fixed groove 402 is opened at the lower end of the movable rod 3, and a first tooth 403 is fixedly connected equidistantly inside the fixed groove 402. A movable plate 404 is arranged inside the first movable groove 401, a first spring 405 is arranged inside the first movable groove 401, a first communication hole 406 is opened inside the movable plate 404, three groups of second teeth 407 are arranged inside the first communication hole 406, a first rotating shaft 408 is arranged on the inner wall of the first movable groove 401, a trigger 409 is arranged on the outside of the first rotating shaft 408, and a guide block 410 is arranged at the upper end of the trigger 409; By designing the device in the shape of a pistol, the first reset arm 13, the second reset arm 14 and the third reset arm 15 with different shapes are installed on the outer sleeve 1 in a detachable connection manner, and precise positioning is achieved by pulling the trigger 409. This device solves the problems of uncontrollable pressurization operation, easy surgical trauma, the need for continuous squeezing for fixation, and poor versatility.

[0020] Furthermore, a limiting component 5 is arranged on the outer side of the movable rod 3. The limiting component 5 includes a fixed block 501, a second rotating shaft 502, a baffle 503, a second communication hole 504, a second movable groove 505, a second spring 506, and third teeth 507. Two groups of fixed blocks 501 are fixedly connected to the left end of the outer sleeve 1. A second rotating shaft 502 is rotatably connected to the opposite sides of the two groups of fixed blocks 501. A baffle 503 is fixedly connected to the outer side of the second rotating shaft 502. A second communication hole 504 is opened in the baffle 503. Three groups of third teeth 507 are fixedly connected to the bottom of the second communication hole 504. The third teeth 507 are meshed with the first teeth 403. A second movable groove 505 is opened in the left end of the outer sleeve 1. A second spring 506 is arranged in the second movable groove 505. The two ends of the second spring 506 are respectively connected to the inner wall of the second spring 506 and the baffle 503. As Figure 7 shown, this structure is used to achieve rough positioning and free sliding of the movable rod 3 by pressing the baffle 503. The baffle 503 is slightly inclined and is abutted against the inner walls of the second movable groove 505 and the baffle 503 by the elastic force of the second spring 506 to prevent the movable rod 3 from retreating; when pressing the baffle 503 by hand, the baffle 503 rotates through the second rotating shaft 502 to be perpendicular to the movable rod 3, and the third teeth 507 on the inner wall of the second communication hole 504 are disengaged from the gap of the first teeth 403, realizing the free sliding of the movable rod 3.

[0021] Furthermore, the movable plate 404 is located on the left inner wall of the first movable groove 401. The movable rod 3 passes through the first communication hole 406 and is movably connected to the movable plate 404. The two ends of the first spring 405 are respectively connected to the inner walls of the first movable groove 401 and the movable plate 404. The second teeth 407 are meshed with the first teeth 403 and face in opposite directions. The front and rear ends of the first rotating shaft 408 are rotatably connected to the inner wall of the first movable groove 401. The inner side of the trigger 409 is fixedly connected to the first rotating shaft 408. The lower end of the guide block 410 is fixedly connected to the top of the trigger 409. The guide block 410 is triangular and is located on the left side of the movable plate 404. Torsion springs are arranged at the front and rear ends of the first rotating shaft 408. The two ends of the torsion springs are respectively connected to the first movable groove 401 and the trigger 409. As Figure 6As shown, this structure is used to adjust the settings of component 4. In the normal state, due to the action of the first spring 405, the movable plate 404 is perpendicular to the movable rod 3, and the movable plate 404 does not contact the top and bottom surfaces of the gun barrel. When the trigger 409 starts to be pulled, the movable plate 404 gradually begins to tilt and then abuts against the top and bottom surfaces of the movable rod 3. At this time, the second teeth 407 on the inner wall of the first communication hole 406 are inserted into the gaps of the first teeth 403. Further pulling the trigger 409 will drive the movable plate 404 to move the movable rod 3 forward. When the trigger 409 is released, under the action of the torsion spring, the trigger 409 is reset, and at the same time, the movement steps of the movable plate 404 are exactly the opposite, continuously controlling the movable rod 3 to move forward.

[0022] Furthermore, a stopper 6 is fixedly connected to the right end of the movable rod 3. Six groups of positioning blocks 7 are annularly and equidistantly installed on the right side surface of the stopper 6. A fixed head 8 is fixedly connected to the left end of the movable rod 3. As Figure 3 shown, this structure is used to make the movable rod 3 contact the bone surface after moving forward through the stopper 6 and the positioning blocks 7, increasing the friction force and making the positioning of the movable rod 3 more firm.

[0023] Furthermore, a guide groove 9 is opened at the central position of the movable rod 3, and the diameter of the guide groove 9 is two millimeters. As Figure 3 shown, this structure is used to insert the Kirschner wire through the guide groove 9 after the fracture is reduced through the guide groove 9, which can shorten the operation time, reduce the number of intraoperative fluoroscopies, improve the accuracy, and promote fracture healing.

[0024] Furthermore, a connection hole 10 is opened at the upper right end of the outer sleeve 1. A bolt 11 is threadedly connected in the connection hole 10. A connection frame 12 is inserted into the right end of the outer sleeve 1. A first reset arm 13 is fixedly connected to the right end of the connection frame 12. As Figure 2 shown, this structure is used to install the connection frame 12 on the outer sleeve 1 through the detachable connection of the connection hole 10 and the bolt 11. Rotating the bolt 11 in the opposite direction can separate the connection frame 12 from the outer sleeve 1.

[0025] Furthermore, the right end of the outer sleeve 1 can replace the second reset arm 14 and the third reset arm 15. The card slots of the second reset arm 14 and the third reset arm 15 are adapted to the right end head of the outer sleeve 1. As Figure 4 and Figure 5 shown, this structure is used to facilitate the selection of different types of reset arms according to the different fracture sites of patients through the detachable connection method. This device is equipped with three reset arms. The first reset arm 13 is suitable for general long bone surgeries, the second reset arm 14 is suitable for pelvic surgeries, and the third reset arm 15 is suitable for percutaneous minimally invasive surgeries.

[0026] Working principle: When in use, as Figure 1As shown, first select different types of reduction arms according to the different fracture sites of the patient. Insert the card slot at the end of the outer sleeve 1, and then rotate the bolt 11 into the connection hole 10 to fix the reduction arm. Such as Figure 6 and Figure 7 As shown, in the normal state, due to the elasticity of the first spring 405, the movable plate 404 is perpendicular to the movable rod 3, and the movable plate 404 does not contact the top and bottom surfaces of the gun barrel. When the trigger 409 starts to be pulled, the movable plate 404 gradually starts to tilt and then abuts against the top and bottom surfaces of the movable rod 3. At this time, the second teeth 407 on the inner wall of the first communication hole 406 are inserted into the gap of the first teeth 403. Continuing to pull the trigger 409 drives the movable plate 404 to move the movable rod 3 forward. When the trigger 409 is released, under the action of the torsion spring, the trigger 409 is reset, and at the same time, the movement steps of the movable plate 404 are exactly the opposite. Continuously pressing the trigger 409 controls the forward movement of the movable rod 3. When the movable rod 3 moves forward, through the orientation positions of the first teeth 403 and the third teeth 507, the movable rod 3 drives the baffle 503 to tilt slightly, and under the elastic force of the second spring 506, it abuts against the inner walls of the second movable groove 505 and the baffle 503, so that the baffle 503 swings continuously when the movable rod 3 moves forward. When the movable rod 3 stops moving forward, the second spring 506 pushes the baffle 503 to insert the third teeth 507 on the inner wall of the second communication hole 504 into the gap of the first teeth 403. At this time, the backs of the first teeth 403 and the third teeth 507 are in contact with each other to prevent the movable rod 3 from retreating. The baffle 503 can be pressed by hand, and the baffle 503 rotates through the second rotating shaft 502 to be perpendicular to the movable rod 3, and the third teeth 507 on the inner wall of the second communication hole 504 are separated from the gap of the first teeth 403, realizing the free sliding of the movable rod 3. After the fracture is reduced, the Kirschner wire is inserted through the guide groove 9. The above is the entire working principle of the present invention.

[0027] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights involved.

Claims

1. Fracture reduction Kirschner wire fixation guide, including an outer sleeve (1), characterized in that: A handle (2) is fixedly connected to the lower end of the outer sleeve (1). An actuating rod (3) is movably connected inside the handle (2). An adjusting assembly (4) is arranged inside the outer sleeve (1). The adjusting assembly (4) includes a first movable groove (401), a fixing groove (402), first teeth (403), a movable plate (404), a first spring (405), a first communication hole (406), a first communication hole (406), second teeth (407), a first rotating shaft (408), a trigger (409) and a guiding block (410). A first movable groove (401) is formed inside the outer sleeve (1). The actuating rod (3) passes through the outer sleeve (1) along the first movable groove (401). A fixing groove (402) is formed at the lower end of the actuating rod (3). A plurality of first teeth (403) are fixedly connected to the fixing groove (402) at equal intervals. A movable plate (404) is arranged inside the first movable groove (401). A first spring (405) is arranged on the inner side of the first movable groove (401). A first communication hole (406) is formed inside the movable plate (404). Three groups of second teeth (407) are arranged inside the first communication hole (406). A first rotating shaft (408) is arranged on the inner wall of the first movable groove (401). A trigger (409) is arranged on the outer side of the first rotating shaft (408). A guiding block (410) is arranged at the upper end of the trigger (409).

2. The fracture reduction Kirschner wire fixation guide according to claim 1, characterized in that: A limiting assembly (5) is arranged on the outer side of the actuating rod (3). The limiting assembly (5) includes a fixing block (501), a second rotating shaft (502), a baffle (503), a second communication hole (504), a second movable groove (505), a second spring (506) and third teeth (507). Two groups of fixing blocks (501) are fixedly connected to the left end of the outer sleeve (1). A second rotating shaft (502) is rotatably connected to the opposite sides of the two groups of fixing blocks (501). A baffle (503) is fixedly connected to the outer side of the second rotating shaft (502). A second communication hole (504) is formed inside the baffle (503). Three groups of third teeth (507) are fixedly connected to the bottom of the second communication hole (504). The third teeth (507) are meshed with the first teeth (403). A second movable groove (505) is formed at the left end of the outer sleeve (1). A second spring (506) is arranged inside the second movable groove (505). The two ends of the second spring (506) are respectively connected to the second spring (506) and the inner wall of the baffle (503).

3. The fracture reduction Kirschner wire fixation guide according to claim 1, characterized in that: The movable plate (404) is located on the left inner wall of the first movable slot (401). The movable rod (3) passes through the first communication hole (406) and is movably connected to the movable plate (404). The two ends of the first spring (405) are respectively connected to the inner walls of the first movable slot (401) and the movable plate (404). The second tooth (407) meshes with the first tooth (403) and faces in the opposite direction. The front and rear ends of the first rotating shaft (408) are rotatably connected to the inner wall of the first movable slot (401). The trigger (409) is fixedly connected to the first rotating shaft (408) on the inner side. The lower end of the guide block (410) is fixedly connected to the top of the trigger (409). The guide block (410) is triangular and is located on the left side of the movable plate (404). Torsion springs are arranged at the front and rear ends of the first rotating shaft (408), and the two ends of the torsion springs are respectively connected to the first movable slot (401) and the trigger (409).

4. The fracture reduction Kirschner wire fixation guide according to claim 1, characterized in that: A resisting block (6) is fixedly connected to the right end of the movable rod (3). Six groups of positioning blocks (7) are annularly and equidistantly installed on the right side surface of the resisting block (6). A fixed head (8) is fixedly connected to the left end of the movable rod (3).

5. The fracture reduction Kirschner wire fixation guide according to claim 1, characterized in that: A guide groove (9) is formed at the central position of the movable rod (3), and the diameter of the guide groove (9) is two millimeters.

6. The fracture reduction Kirschner wire fixation guide according to claim 1, characterized in that: A connection hole (10) is formed at the upper right end of the outer sleeve (1). A bolt (11) is threadedly connected in the connection hole (10). A connection bracket (12) is inserted into the right end of the outer sleeve (1), and a first reset arm (13) is fixedly connected to the right end of the connection bracket (12).

7. The fracture reduction Kirschner wire fixation guide according to claim 1, characterized in that: The right end of the outer sleeve (1) can replace the second reset arm (14) and the third reset arm (15), and the clamping grooves of the second reset arm (14) and the third reset arm (15) are adapted to the right end head of the outer sleeve (1).

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