Guiding device for assisting patella fracture kirschner wire implantation

Abstract

The utility model relates to the technical field of medical instruments, in particular to a guiding device for assisting patella fracture kirschner wire implantation, which comprises an outer sleeve and an inner sleeve which are in sliding sleeve connection, and is characterized in that a sliding groove is formed in the outer sleeve, and one end of the inner sleeve is arranged in the sliding groove; a threaded hole is formed in the top of the outer sleeve and communicates with the sliding groove, and a screw is arranged in the threaded hole. Clamping pieces are arranged at the ends, away from the sliding grooves, of the outer sleeve and the inner sleeve correspondingly, and guide holes are formed in the clamping pieces; a guide pipe is arranged on the outer sleeve, the guide pipe is connected with the clamping pieces on the outer sleeve, and the guide pipe is communicated with the guide holes in the two clamping pieces. The kirschner wire is drilled at a time by positioning two points of the upper electrode and the lower electrode of the kirschner wire, so that the accuracy and the effect of an operation are greatly improved, the operation time and the projection time in the operation are shortened, and iatrogenic fracture caused by multiple operations is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a guiding device for assisting the placement of a Kirschner wire for patella fracture. Background Art

[0002] At present, there is no guiding device for Kirschner wire fixation of patellar fracture in clinical practice. When doctors perform this kind of operation, they usually use electric drill to drill Kirschner wire to fix the fracture end by hand. If the position is not ideal, they need to drill the Kirschner wire again until the position of the Kirschner wire is satisfactory before completing the operation. This has many disadvantages, such as prolonged operation time, increased intraoperative radiation, which is not conducive to the physical and mental health of patients and medical staff, and may also lead to iatrogenic fractures, etc. Therefore, it is necessary to design a guiding device that is convenient for Kirschner wire insertion. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a guiding device for assisting the insertion of Kirschner wires for patellar fractures, which can effectively solve the problems raised in the above-mentioned background technology.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is: a guiding device for assisting the insertion of Kirschner wires for patellar fractures, comprising an outer sleeve and an inner sleeve, the inner sleeve being slidably connected to the outer sleeve, and characterized in that a slide groove is provided in the outer sleeve, one end of the inner sleeve is arranged in the slide groove; a threaded hole is provided at the top of the outer sleeve, the threaded hole is connected to the slide groove, and a screw is provided in the threaded hole; a clamp is respectively provided at one end of the outer sleeve and the inner sleeve away from the slide groove, and a guide hole is provided on the clamp; a guide tube is provided on the outer sleeve, the guide tube is connected to the clamp on the outer sleeve, and the guide tube is connected to the guide holes on the two clamps.

[0005] Preferably, a first limit block is provided at one end of the inner wall of the slide groove close to the inner sleeve, and a second limit block is provided at the end of the inner sleeve. When the inner sleeve slides to the end away from the outer sleeve, the first limit block will clamp the second limit block.

[0006] Preferably, the first limit block is arranged on the upper and lower sides of the inner wall of the slide groove, and the second limit block is arranged on the upper and lower sides of the end of the inner sleeve.

[0007] Preferably, a handle is provided on one end of the inner sleeve close to the outer sleeve, and a guide groove is provided on the outer sleeve. The guide groove is connected to the sliding groove, and the handle slides in the guide groove.

[0008] Preferably, a handle is provided on the outer sleeve, the handle and the guide tube are located on the same side of the outer sleeve, and the handle is located above the guide tube.

[0009] Preferably, the handle is tilted away from the guide tube, and the tilt angle between the handle and the guide tube is 10-18 degrees.

[0010] Preferably, a protruding tooth is provided on one side of the clamp, and the protruding tooth faces the inner side of the outer sleeve or the inner sleeve.

[0011] Preferably, the outer sleeve and the inner sleeve are both in a 7-shape.

[0012] Preferably, a screw groove is provided on the top of the outer sleeve, the screw groove is connected to the threaded hole, the screw groove is located directly above the threaded hole, and the screw slides in the screw groove.

[0013] Compared with the prior art, the utility model provides a guiding device for assisting the insertion of Kirschner wires for patellar fractures, which has the following beneficial effects:

[0014] The utility model locates the two points of the upper pole and the lower pole of the Kirschner wire, and after the positions of the two positioning points are satisfactory, the Kirschner wire is drilled at one time, which greatly improves the accuracy and effect of the operation, shortens the operation time and intraoperative projection time, and avoids the occurrence of iatrogenic fractures caused by multiple operations.

[0015] The utility model has a simple structure, low manufacturing cost and is convenient for operation during surgery;

[0016] The utility model is made of a stainless steel material with strong plasticity, is light in weight, easy to operate, and can be reused after being sterilized; and has a low probability of damaging soft tissues and blood vessels of limbs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a partial structural sectional view of the utility model;

[0019] Figure 3 It is a partial structural sectional view of the utility model;

[0020] Figure 4 This is a reference diagram of the use status of the utility model.

[0021] Among them: 1. outer sleeve, 11. slide groove, 12. threaded hole, 13. guide groove, 14. handle, 15. screw groove, 2. inner sleeve, 21. handle, 3. screw, 4. clamp, 41. guide hole, 42. convex tooth, 5. guide tube, 61. first limit block, 62. second limit block. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-4 The utility model provides a guiding device for assisting the insertion of a Kirschner wire for patellar fracture, comprising an outer sleeve 1 and an inner sleeve 2, wherein the inner sleeve 2 is slidably sleeved with the outer sleeve 1, and is characterized in that a slide groove 11 is provided in the outer sleeve 1, and one end of the inner sleeve 2 is arranged in the slide groove 11; a threaded hole 12 is provided at the top of the outer sleeve 1, and the threaded hole 12 is communicated with the slide groove 11, and a screw 3 is provided in the threaded hole 12; a clamp 4 is respectively provided at one end of the outer sleeve 1 and the inner sleeve 2 away from the slide groove 11, and a guide hole 41 is provided on the clamp 4; a guide tube 5 is provided on the outer sleeve 1, and the guide tube 5 is connected to the clamp 4 on the outer sleeve 1, and the guide tube 5 is communicated with the guide holes 41 on the two clamps 4.

[0024] Preferably, a first limit block 61 is provided at one end of the inner wall of the slide groove 11 close to the inner sleeve 2, and a second limit block 62 is provided at the end of the inner sleeve 2. When the inner sleeve 2 slides to the end away from the outer sleeve 1, the first limit block 61 will clamp the second limit block 62.

[0025] Preferably, the first limit block 61 is disposed on upper and lower sides of the inner wall of the slide groove 11 , and the second limit block 62 is disposed on upper and lower sides of the end of the inner sleeve 2 .

[0026] Preferably, a handle 21 is provided on one end of the inner sleeve 2 close to the outer sleeve 1 , and a guide groove 13 is provided on the outer sleeve 1 . The guide groove 13 is connected to the slide groove 11 , and the handle 21 slides in the guide groove 13 .

[0027] Preferably, a handle 5 is provided on the outer sleeve 1 , and the handle 5 and the guide tube 5 are located on the same side of the outer sleeve 1 , and the handle 5 is located above the guide tube 5 .

[0028] Preferably, the handle 5 is tilted away from the guide tube 5, and the tilt angle between the handle 5 and the guide tube 5 is 10-18 degrees; the tilt angle between the handle 5 and the guide tube 5 is preferably 15 degrees. This design can better prevent the Kirschner wire from being blocked by the handle 5 when drilling into the guide tube 5.

[0029] Preferably, a protruding tooth 42 is provided on one side of the clamp 4 , and the protruding tooth 42 faces the inner side of the outer sleeve 1 or the inner sleeve 2 .

[0030] Preferably, the outer sleeve 1 and the inner sleeve 2 are both in a 7-shape.

[0031] Preferably, a screw groove 15 is provided on the top of the outer sleeve 1 , the screw groove 15 is connected to the threaded hole 12 , the screw groove 15 is located directly above the threaded hole 12 , and the screw 3 slides in the screw groove 15 .

[0032] As a specific embodiment of the utility model:

[0033] When in use, the patella is positioned between the two clamps 4, the outer sleeve 1 and the inner sleeve 2 are placed at the appropriate positions at both ends of the patella, and the distance between the outer sleeve 1 and the inner sleeve 2 is adjusted by sliding the inner sleeve 2, so that the two clamps 4 are respectively in contact with the two ends of the patella, at this time, the screw 3 at the top of the outer sleeve 1 of the knob is locked by the screw 3 and the top of the inner sleeve 2, and the two clamps 4 are provided with convex teeth 42 on both sides of the opposite sides, which are conducive to clamping the upper edge cortex of the patella; then, the Kirschner wire is inserted from one end of the guide tube 5, and passes through the guide hole 41 of the clamp 4 on the outer sleeve 1, the patella, and the guide hole 41 of the clamp 4 on the inner sleeve 2 in sequence, and the Kirschner wire is drilled. By positioning the positioning points of the two clamps 4 at both ends of the patella, after the positioning point position is satisfactory, the Kirschner wire is drilled in at one time, which greatly improves the accuracy and effect of the operation, shortens the operation time, and avoids the occurrence of iatrogenic fractures caused by multiple operations.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A guiding device for assisting the insertion of a Kirschner wire for patellar fracture, comprising an outer sleeve (1) and an inner sleeve (2), wherein the inner sleeve (2) is slidably sleeved with the outer sleeve (1), and characterized in that: A slide groove (11) is provided in the outer sleeve (1), and one end of the inner sleeve (2) is arranged in the slide groove (11); a threaded hole (12) is provided at the top of the outer sleeve (1), the threaded hole (12) is communicated with the slide groove (11), and a screw (3) is provided in the threaded hole (12); a clamp (4) is provided at one end of the outer sleeve (1) and the inner sleeve (2) away from the slide groove (11), and a guide hole (41) is provided on the clamp (4); a guide tube (5) is provided on the outer sleeve (1), and the guide tube (5) is connected to the clamp (4) on the outer sleeve (1), and the guide tube (5) is communicated with the guide holes (41) on the two clamps (4).

2. A guiding device for assisting the placement of Kirschner wires for patellar fractures according to claim 1, characterized in that: A first limit block (61) is provided at one end of the inner wall of the slide groove (11) close to the inner sleeve (2), and a second limit block (62) is provided at the end of the inner sleeve (2). When the inner sleeve (2) slides to the end in a direction away from the outer sleeve (1), the first limit block (61) will clamp the second limit block (62).

3. A guiding device for assisting the placement of Kirschner wires for patellar fractures according to claim 2, characterized in that: The first limit block (61) is arranged on the upper and lower sides of the inner wall of the slide groove (11), and the second limit block (62) is arranged on the upper and lower sides of the end of the inner sleeve (2).

4. A guide device for assisting the placement of Kirschner wires for patellar fractures according to claim 1 or 2, characterized in that: A handle (21) is provided on one end of the inner sleeve (2) close to the outer sleeve (1), and a guide groove (13) is provided on the outer sleeve (1). The guide groove (13) is connected to the slide groove (11), and the handle (21) slides in the guide groove (13).

5. A guiding device for assisting the placement of Kirschner wires for patellar fractures according to claim 4, characterized in that: The outer sleeve (1) is provided with a handle (14), the handle (14) and the guide tube (5) are located on the same side of the outer sleeve (1), and the handle (14) is located above the guide tube (5).

6. A guiding device for assisting the placement of Kirschner wires for patellar fractures according to claim 5, characterized in that: The handle (14) is arranged to be inclined in a direction away from the guide tube (5), and the inclination angle between the handle (14) and the guide tube (5) is 10-18 degrees.

7. A guiding device for assisting the placement of Kirschner wires for patellar fractures according to claim 6, characterized in that: A convex tooth (42) is provided on one side of the clamp (4), and the convex tooth (42) faces the inner side of the outer sleeve (1) or the inner sleeve (2).

8. A guiding device for assisting the placement of Kirschner wires for patellar fractures according to claim 1, characterized in that: The outer sleeve (1) and the inner sleeve (2) are both in a 7-shape.

9. A guiding device for assisting the placement of Kirschner wires for patellar fractures according to claim 1, characterized in that: A screw groove (15) is provided at the top of the outer sleeve (1), the screw groove (15) is communicated with the threaded hole (12), the screw groove (15) is located directly above the threaded hole (12), and the screw (3) slides in the screw groove (15).

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