Kirschner wire operating forceps

Abstract

The invention discloses kirschner wire operating forceps, and belongs to the technical field of medical instruments. Comprising an operating forceps body and a bending and cutting unit, the operating forceps body is provided with a left forceps body and a right forceps body, and the left forceps body is hinged to the right forceps body; the bending and cutting-off unit is arranged at the jaw end of the left clamp body and comprises two connecting plates, a positioning disc and a pressure applying disc, the positioning disc and the pressure applying disc are rotationally installed between the two connecting plates, the positioning disc is fixedly connected with the left clamp body, and a cutting edge protrudes outwards in the circumferential direction of the positioning disc. According to the kirschner wire operating forceps, the problems that after a kirschner wire is bent, the position and angle of the kirschner wire are possibly changed, at the moment, the stability of the kirschner wire is difficult to guarantee, the situation that the cutting position is inaccurate easily occurs, and even the kirschner wire is possibly bent or shifted again when a single cutting tool is used for operation are solved; the operation complexity and risk are increased.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a Kirschner wire surgical forceps. Background Technology

[0002] Kirschner wires, a commonly used internal fixation material in orthopedic surgery, are primarily made of stainless steel and titanium alloy. Stainless steel, with its high rigidity, is often used for temporary fixation or short-term traction; titanium alloy, with its high strength and good corrosion resistance, is mostly used for long-term fixation. In terms of specifications, initially, Kirschner wire diameters were mostly between 0.7-1.5 mm, but now the commonly used diameter range has expanded to 0.5-3.0 mm, with lengths typically between 5-20 cm. This diverse range of specifications can meet the different bone structures and treatment needs of various patients.

[0003] Existing cutting tools typically need to be used separately from bending tools, leading to frequent tool switching during the procedure. After bending the Kirschner wire, the surgeon must put down the bending tool, pick up the cutting tool to cut it, then put down the cutting tool again and pick up the bending tool again for subsequent adjustments. This repeated tool switching not only increases the complexity of the operation but also easily causes the Kirschner wire to wobble during the switching process, affecting the precision of the surgery. When cutting the Kirschner wire, because its position and angle may have changed after bending, it is difficult to ensure the stability of the Kirschner wire when using a separate cutting tool. This can easily lead to inaccurate cutting positions and may even cause the Kirschner wire to bend or shift again, increasing the complexity and risk of the surgery.

[0004] Therefore, it is necessary to provide a Kirschner wire surgical forceps to solve the above problems. Summary of the Invention

[0005] In view of the above-mentioned problems in the prior art, the purpose of the present invention is to provide a Kirschner wire surgical forceps to solve the problems mentioned in the background art.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a Kirschner wire surgical forceps, including a surgical forceps body and a bending and cutting unit, wherein the surgical forceps body has a left forceps body and a right forceps body, and the left forceps body and the right forceps body are hinged together; The bending and cutting unit is located at the jaw end of the left jaw body and includes two connecting plates, a positioning plate and a pressure plate. The positioning plate and the pressure plate are rotatably installed between the two connecting plates. The positioning plate is fixedly connected to the left jaw body. The positioning plate has a cutting edge protruding outward in the circumferential direction. When the Kirschner wire is held by the left and right clamps, it is located between the positioning plate and the pressure plate. When the connecting plate is rotated, the connecting plate moves the pressure plate circumferentially along the outer wall of the positioning plate with the center of the positioning plate as the axis. At this time, the Kirschner wire bends under the pressure of the pressure plate. The cutting edge is set to cut the Kirschner wire when the pressure plate passes by.

[0007] Furthermore, the outer peripheral wall of the positioning disk is provided with an annular groove for guiding Kirschner wires in the circumferential direction, the cutting edge is located in the annular groove, and the center of the positioning disk has a positioning hole. The pressure plate has a central hole at its center; The connecting plate has a main body, with an inner hole corresponding to the center hole at the inner end and an outer hole corresponding to the positioning hole at the outer end.

[0008] Furthermore, the outer peripheral wall of the pressure plate has several concentrically arranged arc-shaped pressure surfaces protruding outward, and the pressure surfaces are aligned with the annular groove. The pressure surfaces are distributed in a counterclockwise direction and their diameters gradually increase.

[0009] Furthermore, the connecting plate is provided with a plurality of insertion holes spaced apart, the insertion holes being located between the inner hole and the outer hole and the centers of the holes being located in the same straight line direction; The pressure plate has several through holes at equal angles along the circumference, and one through hole on each pressure surface. The distance between the through hole on the large-diameter pressure surface and the central hole is longer than the distance between the through hole on the small-diameter pressure surface and the central hole. Each of the aforementioned sockets corresponds to a through hole, and the distance between each corresponding socket and through hole and the center of the inner hole is equal.

[0010] Furthermore, the end of the connecting plate away from the positioning plate is an extension, and a pressure rod is fixedly connected between the two extensions. One end of the pressure rod protrudes from the connecting plate, and the pressure plate is located between the pressure rod and the positioning plate.

[0011] Furthermore, a locking block is fixedly connected to the jaw portion of the left clamp body. The locking block has a supporting surface and an arc-shaped surface, with the supporting surface located on the outer side of the locking block. The outer peripheral wall of the positioning disk has a notch that matches the arc-shaped surface, and the opening of the notch faces outward.

[0012] Furthermore, a connecting hole is provided on the jaw portion of the left clamp body, and the connecting hole is located on one side of the clamp block; The positioning plate has a through hole located outside the annular groove. A pin is rotatably connected inside the through hole. The pin has a positioning post protruding outward and matching the connecting hole. The positioning post and the annular groove are at the same horizontal position.

[0013] Furthermore, the positioning disk is also provided with a guide sleeve, which is rotatably mounted on the positioning disk by a pin, and the inner wall of the guide sleeve abuts against the Kirschner wire.

[0014] The beneficial effects of this invention are as follows: The Kirschner wire surgical forceps provided by this invention, by setting a bending and cutting unit on the left forceps body, can fit the Kirschner wire between the positioning plate and the pressure plate. When the pressure plate rotates around the outer circumference of the positioning plate, it drives the Kirschner wire to bend around the positioning plate. The positioning plate is fixed on the left forceps body to ensure the stability of the Kirschner wire. By opening a cutting edge on the positioning plate, the Kirschner wire is pressed and broken against the cutting edge after rotating to a certain angle. In actual operation, the doctor can continuously complete the bending and cutting of the Kirschner wire without changing other tools, and prevent the Kirschner wire from bending or shifting again. By setting several pressure surfaces of different diameters on the pressure plate, the distance between the pressure plate and the cutting edge and the annular groove can be adjusted, so that Kirschner wires of different diameters can be accommodated in the annular groove. This ensures that even small-diameter Kirschner wires can be squeezed at the cutting edge by the pressure surface, achieving complete cutting of the Kirschner wire. This increases the versatility of the surgical forceps. At the same time, by adjusting the distance between the pressure plate and the cutting edge, the cutting depth between the Kirschner wire and the cutting edge can also be changed, which can adapt to cutting Kirschner wires of more different materials.

[0015] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0016] The accompanying drawings, which form part of this specification, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is an overall schematic diagram of the present invention; Figure 2 This is a schematic diagram of the overall jaw portion of the present invention; Figure 3 This is a schematic diagram of the surgical forceps body of the present invention; Figure 4 For the present invention Figure 3 Enlarged diagram of area A in the middle; Figure 5 This is a schematic diagram of the bending and cutting unit of the present invention; Figure 6 This is a schematic diagram of the positioning disk of the present invention; Figure 7 This is an exploded view of the pressure plate and connecting plate of the present invention; Figure 8 This is a schematic cross-sectional view of the pressure plate of the present invention; Figure 9 This is a schematic diagram illustrating the use of the present invention; Figure 10 For the present invention Figure 9 Enlarged diagram of area B in the middle; The following are the labeling elements in the figure: 1. Surgical forceps body; 11. Left forceps body; 111. Locking block; 1111. Holding surface; 1112. Arc-shaped surface; 112. Connecting hole; 12. Right forceps body; 2. Connecting plate; 201. Extension part; 202. Main body part; 21. First insertion hole; 22. Second insertion hole; 23. Third insertion hole; 24. Fourth insertion hole; 25. Inner hole; 26. Outer hole; 3. Positioning plate; 31. Annular groove; 32. Through-hole 33. Hole; 34. Notch; 35. Cutting edge; 4. Positioning hole; 4. Pressure plate; 401. First pressure surface; 402. Second pressure surface; 403. Third pressure surface; 404. Fourth pressure surface; 41. First through hole; 42. Second through hole; 43. Third through hole; 44. Fourth through hole; 45. Center hole; 5. Guide sleeve; 6. Pressure rod; 7. Pin; 71. Positioning post; 8. Insert pin; 9. Kirschner wire. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0019] like Figure 1-10 As shown, the present invention provides a technical solution: a Kirschner wire surgical forceps, including a surgical forceps body 1 and a bending and cutting unit, wherein the surgical forceps body 1 has a left forceps body 11 and a right forceps body 12, and the left forceps body 11 and the right forceps body 12 are hinged together. The bending and cutting unit is set at the jaw end of the left jaw body 11 and includes two connecting plates 2, a positioning plate 3 and a pressure plate 4. The positioning plate 3 and the pressure plate 4 are rotatably installed between the two connecting plates 2. The positioning plate 3 is fixedly connected to the left jaw body 11. The positioning plate 3 has a cutting edge 34 protruding outward in the circumferential direction. When the Kirschner wire 9 is held by the left clamp 11 and the right clamp 12, the Kirschner wire 9 is located between the positioning plate 3 and the pressure plate 4. When the connecting plate 2 is rotated, the connecting plate 2 moves the pressure plate 4 circumferentially along the outer peripheral wall of the positioning plate 3 with the center of the positioning plate 3 as the axis. At this time, the Kirschner wire 9 bends after being pressured by the pressure plate 4. The cutting edge 34 is set to cut off the Kirschner wire 9 when the pressure plate 4 passes by.

[0020] The outer peripheral wall of the positioning disk 3 is provided with an annular groove 31 for guiding Kirschner wires 9 in the circumferential direction, the cutting edge 34 is located in the annular groove 31, and the center of the positioning disk 3 has a positioning hole 35. The pressure plate 4 has a central hole 45 at its center; The connecting plate 2 has a main body 202, with an inner hole 25 corresponding to the center hole 45 at the inner end of the main body 202 and an outer hole 26 corresponding to the positioning hole 35 at the outer end.

[0021] The outer peripheral wall of the pressure plate 4 has several concentrically arranged arc-shaped pressure surfaces protruding outward, and the pressure surfaces are aligned with the annular groove 31. The pressure surface includes a first pressure surface 401, a second pressure surface 402, a third pressure surface 403, and a fourth pressure surface 404 distributed sequentially in a counterclockwise direction. The diameter of the first pressure surface 401 is the same as the diameter of the pressure plate 4. The diameter of the fourth pressure surface 404 is larger than the diameters of the third pressure surface 403, the second pressure surface 402, and the first pressure surface 401. The diameter of the third pressure surface 403 is larger than the diameters of the second pressure surface 402 and the first pressure surface 401. The diameter of the second pressure surface 402 is larger than the diameter of the first pressure surface 401.

[0022] The connecting plate 2 has several insertion holes. The insertion holes are located between the inner hole 25 and the outer hole 26 and their centers are located in the same straight line direction. The insertion holes include a first insertion hole 21, a second insertion hole 22, a third insertion hole 23 and a fourth insertion hole 24. The distances between the first insertion hole 21, the second insertion hole 22, the third insertion hole 23 and the fourth insertion hole 24 and the center of the inner hole 25 increase sequentially. The pressure plate 4 is provided with a first through hole 41, a second through hole 42, a third through hole 43 and a fourth through hole 44. The distance between the first through hole 41 and the center of the central hole 45 is the same as the distance between the first insertion hole 21 and the center of the inner hole 25, and is close to the midpoint of the first pressure surface 401. The distance between the second through hole 42 and the center hole 45 is the same as the distance between the second insertion hole 22 and the center hole 25, and is close to the midpoint of the second pressure surface 402; The distance between the center of the third through hole 43 and the center hole 45 is the same as the distance between the center of the third insertion hole 23 and the inner hole 25, and is close to the midpoint of the third pressure surface 403; The distance between the center of the fourth through hole 44 and the center hole 45 is the same as the distance between the center of the fourth insertion hole 24 and the inner hole 25, and is close to the midpoint of the fourth pressure surface 404.

[0023] The end of the connecting plate 2 away from the positioning plate 3 is an extension 201. A pressure rod 6 is fixedly connected between the two extensions 201. One end of the pressure rod 6 protrudes from the connecting plate 2. The pressure plate 4 is located between the pressure rod 6 and the positioning plate 3.

[0024] A locking block 111 is fixedly connected to the jaw portion of the left clamp body 11. The locking block 111 has a supporting surface 1111 and an arc-shaped surface 1112. The supporting surface 1111 is located on the outside of the locking block 111. The outer peripheral wall of the positioning disk 3 has a notch 33 that matches the arc surface 1112, and the opening of the notch 33 faces outward.

[0025] A connecting hole 112 is provided on the jaw portion of the left clamp body 11, and the connecting hole 112 is located on one side of the clamp block 111; The positioning plate 3 has a through hole 32 located outside the annular groove 31. A pin 7 is rotatably connected inside the through hole 32. The pin 7 protrudes outward with a positioning post 71 that matches the connecting hole 112. The positioning post 71 and the annular groove 31 are at the same horizontal position.

[0026] The positioning plate 3 is also provided with a guide sleeve 5, which is rotatably installed on the positioning plate 3 by means of a pin 7, and the inner wall of the guide sleeve 5 abuts against the Kirschner wire 9.

[0027] In one embodiment, how to bend and cut Kirschner wires

[0028] Specifically, rotate the positioning pin 71 so that it is inserted into the connection hole 112, and then the notch 33 is locked onto the locking block 111. At this time, the connection between the bending and cutting unit and the surgical forceps body 1 is completed. Hold the end of the surgical forceps body 1 with your left hand, so that the jaws of the left forceps body 11 and the right forceps body 12 are separated. Align the Kirschner wire 9 with the guide sleeve 5 and insert it into the gap between the positioning plate 3 and the pressure plate 4, so that the Kirschner wire 9 is located in the annular groove 31. After moving the surgical forceps body 1 to the appropriate position, make the jaws of the left forceps body 11 contact the Kirschner wire 9. After squeezing the handle, the jaws of the left forceps body 11 and the right forceps body 12 will hold the Kirschner wire 9 so that the Kirschner wire 9 will not move. Hold the pressure rod 6 with your right hand and rotate it clockwise. At this time, the pressure rod 6 drives the connecting plate 2 to rotate around the outer hole 26. The positioning plate 3 is fixed by the notch 33 and the supporting surface 1111. The pressure surface of the pressure plate 4 bends the Kirschner wire 9 along the annular groove 31. When the pressure surface of the pressure plate 4 reaches the cutting edge 34, the Kirschner wire 9 is located between the cutting edge 34 and the pressure plate 4. The pressure plate 4 squeezes the Kirschner wire 9 onto the cutting edge 34, thereby cutting off the Kirschner wire 9. At this point, release the jaws of the left clamp body 11 and the right clamp body 12 to allow the Kirschner wire 9 to disengage from the clamping of the surgical clamp body 1. Move the surgical clamp body 1 forward again so that the Kirschner wire 9 is located outside the annular groove 31. Then rotate the guide sleeve 5 to remove the guide sleeve 5 from the bend of the Kirschner wire 9. This completes the bending and cutting of the Kirschner wire 9.

[0029] In another implementation, the surgical forceps can also accommodate Kirschner wires of different diameters.

[0030] Specifically, taking the small-diameter Kirschner wire 9 as an example, the bending and cutting unit is installed on the surgical forceps body 1 according to the above steps. The pressure plate 4 is rotated so that the fourth through hole 44 is aligned with the fourth insertion hole 24. The pin 8 is inserted into the fourth through hole 44 and the fourth insertion hole 24 so that the fourth pressure surface 404 and the annular groove 31 correspond. After the Kirschner wire 9 is positioned, the pressure rod 6 is rotated. At this time, the distance between the fourth pressure surface 404 and the annular groove 31 is the closest, so the gap between the fourth pressure surface 404 and the cutting edge 34 also becomes smaller. When the Kirschner wire 9 is pressed against the cutting edge 34 by the fourth pressure surface 404, the pressure also increases. When the pressure rod 6 drives the pressure plate 4 to pass the cutting edge 34, the Kirschner wire 9 is cut off. Taking a large-diameter Kirschner wire 9 as an example, after rotating the pressure plate 4, the first through hole 41 and the first insertion hole 21 correspond. Then, the pin 8 is inserted to fix the pressure plate 4 so that it does not rotate. At this time, the first pressure surface 401 is aligned with the annular groove 31. Since the first insertion hole 21 is farthest from the center of the outer hole 26, the gap between the first pressure surface 401 and the cutting edge 34 also becomes larger, so that it can accommodate Kirschner wires 9 with a larger diameter. At the same time, depending on the material of the Kirschner wire 9, the cutting depth driven by the cutting edge 34 can be changed by adjusting the gap between the pressure surface and the cutting edge 34 to bend and cut the Kirschner wire 9.

[0031] In summary, this surgical forceps, by providing a bending and cutting unit on the left forceps body 11, can insert the Kirschner wire 9 between the positioning plate 3 and the pressure plate 4. When the pressure plate 4 rotates around the outer circumference of the positioning plate 3, it causes the Kirschner wire 9 to bend around the positioning plate 3. The positioning plate 3 is fixed on the left forceps body 11 to ensure the stability of the Kirschner wire 9. By providing a cutting edge 34 on the positioning plate 3, the Kirschner wire 9 is pressed and broken by the cutting edge 34 after rotating to a certain angle. This allows the doctor to continuously complete the bending and cutting of the Kirschner wire 9 without changing other tools during actual operation, preventing the Kirschner wire 9 from bending or shifting again. By setting several pressure surfaces of different diameters on the pressure plate 4, the distance between the pressure plate 4 and the cutting edge 34 and the annular groove 31 can be adjusted, so that Kirschner wires 9 of different diameters can be accommodated in the annular groove 31. This ensures that even small-diameter Kirschner wires 9 can be squeezed by the pressure surface at the cutting edge 34, achieving complete cutting of the Kirschner wires 9. This increases the versatility of the surgical forceps. At the same time, by adjusting the distance between the pressure plate 4 and the cutting edge 34, the cutting depth between the Kirschner wires 9 and the cutting edge 34 can also be changed, which can adapt to cutting more Kirschner wires 9 of different materials.

[0032] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A Kirschner wire surgical forceps, characterized in that: The device includes a surgical forceps body (1) and a bending and cutting unit, wherein the surgical forceps body (1) has a left forceps body (11) and a right forceps body (12), and the left forceps body (11) and the right forceps body (12) are hinged together; The bending and cutting unit is located at the jaw end of the left jaw body (11) and includes two connecting plates (2), a positioning plate (3) and a pressure plate (4). The positioning plate (3) and the pressure plate (4) are rotatably installed between the two connecting plates (2). The positioning plate (3) is fixedly connected to the left jaw body (11). The positioning plate (3) has a cutting edge (34) protruding outward in the circumferential direction. When the Kirschner wire (9) is held by the left clamp (11) and the right clamp (12), the Kirschner wire (9) is located between the positioning plate (3) and the pressure plate (4). When the connecting plate (2) is rotated, the connecting plate (2) moves the pressure plate (4) around the center of the positioning plate (3) in the circumferential direction along the outer peripheral wall of the positioning plate (3), so that the Kirschner wire (9) bends after being subjected to the pressure of the pressure plate (4). The cutting edge (34) is set to cut off the Kirschner wire (9) when the pressure plate (4) passes by.

2. The Kirschner wire surgical forceps according to claim 1, characterized in that: The outer peripheral wall of the positioning disk (3) is provided with an annular groove (31) for guiding Kirschner wires (9) along the circumferential direction, the cutting edge (34) is located in the annular groove (31), and the center of the positioning disk (3) has a positioning hole (35). The pressure plate (4) has a central hole (45) at its center. The connecting plate (2) has a main body (202), the inner end of the main body (202) is provided with an inner hole (25) corresponding to the center hole (45), and the outer end is provided with an outer hole (26) corresponding to the positioning hole (35).

3. The Kirschner wire surgical forceps according to claim 1, characterized in that: The outer peripheral wall of the pressure plate (4) has several concentric arc-shaped pressure surfaces protruding outward, and the pressure surfaces are aligned with the annular groove (31). The pressure surfaces are distributed in a counterclockwise direction and their diameters gradually increase.

4. The Kirschner wire surgical forceps according to claim 3, characterized in that: The connecting plate (2) is provided with a plurality of insertion holes spaced apart. The insertion holes are located between the inner hole (25) and the outer hole (26) and their centers are located in the same straight line direction. The pressure plate (4) has several through holes at equal angles along the circumference. There is one through hole on each pressure surface. The distance between the through hole on the large-diameter pressure surface and the central hole (45) is longer than the distance between the through hole on the small-diameter pressure surface and the central hole (45). Each of the aforementioned sockets corresponds to a through hole, and the distance between each corresponding socket and through hole and the center of the inner hole (25) is equal.

5. The Kirschner wire surgical forceps according to claim 1, characterized in that: The end of the connecting plate (2) away from the positioning plate (3) is an extension (201), and a pressure rod (6) is fixedly connected between the two extensions (201). One end of the pressure rod (6) protrudes from the connecting plate (2), and the pressure plate (4) is located between the pressure rod (6) and the positioning plate (3).

6. The Kirschner wire surgical forceps according to claim 5, characterized in that: A locking block (111) is fixedly connected to the jaw portion of the left clamp body (11). The locking block (111) has a supporting surface (1111) and an arc-shaped surface (1112). The supporting surface (1111) is located on the outside of the locking block (111). The positioning disk (3) has a notch (33) on its outer peripheral wall that matches the arc surface (1112), and the opening of the notch (33) faces outward.

7. The Kirschner wire surgical forceps according to claim 6, characterized in that: The left clamp body (11) has a connecting hole (112) on its jaw portion, and the connecting hole (112) is located on one side of the clamp block (111); The positioning plate (3) has a through hole (32) located outside the annular groove (31). A pin (7) is rotatably connected inside the through hole (32). The pin (7) has a positioning post (71) that matches the connecting hole (112) protruding outward. The positioning post (71) and the annular groove (31) are at the same horizontal position.

8. The Kirschner wire surgical forceps according to claim 7, characterized in that: The positioning disk (3) is also provided with a guide sleeve (5), which is rotatably mounted on the positioning disk (3) by means of a pin (7), and the inner wall of the guide sleeve (5) abuts against the Kirschner wire (9).

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