Prepatellar depth limiting kirschner wire guider for patella fracture reduction

Abstract

The utility model provides an anterior patellar depth limiting kirschner wire guider for patellar fracture reduction, and relates to the technical field of medical instruments. The anterior patellar depth limiting kirschner wire guider for patella fracture reduction comprises a first forceps handle, a second forceps handle, a parallel clamping assembly and a guide needle sleeve, the first plier handle and the second plier handle are connected through a parallel clamping assembly, and a first plier tip on the first plier handle and a second plier tip on the second plier handle are combined to form a C-shaped plier opening. The guide needle sleeve is arranged on the first forceps tip, a puncture part is arranged at the bottom of the guide needle sleeve, a puncture tip of the puncture part is close to the parallel clamping assembly, and the puncture tip of the puncture part is opposite to the tip end of the second forceps tip, so that the kirschner wire can avoid the second forceps tip when puncturing along the guide needle sleeve; the first plier handle and the second plier handle are each provided with a depth limiting rod, and the depth limiting rods face the C-shaped jaw. The technical effect that the kirschner wire withdrawing point can be determined is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a patellar fracture reduction anterior patellar depth limiting Kirschner wire guide. Background Art

[0002] Patellar fracture is the most common intra-articular fracture. To reduce the incidence of complications and disability rates, surgical treatment is the first choice. Surgical treatment methods include "open reduction, Kirschner wire tension band, patellar claw, internal fixation with special-shaped steel plates, external fixator fixation" and other surgical methods, all of which require fracture reduction and fixation under X-ray monitoring. Among them, Kirschner wire tension band technology is a classic medical method for patellar fractures. So far, there is still no other internal fixation method that can completely replace it. This method can convert the local tension of the fracture when the knee joint is flexed into pressure between the fracture fragments. It is also inexpensive and good quality, reducing the medical expenses burden for patients.

[0003] However, during the current Kirschner wire tension band surgery for patellar fractures, there are problems such as the unpredictable needle insertion point when the Kirschner wire is "blindly inserted", the Kirschner wire cannot be parallel to the anterior patellar bone surface, and the Kirschner wire depth is non-standard. Utility Model Content

[0004] The utility model aims to provide a patellar fracture reduction anterior patellar depth limiting Kirschner wire guide to alleviate the technical problem of unpredictable Kirschner wire exit points in the prior art.

[0005] In a first aspect, an embodiment of the utility model provides a patellar fracture reduction anterior patellar depth limiting Kirschner wire guide, comprising a first clamp handle, a second clamp handle, a parallel clamp assembly and a guide needle sleeve;

[0006] The first clamp handle and the second clamp handle are connected by the parallel clamp assembly, and the first clamp tip on the first clamp handle and the second clamp tip on the second clamp handle are combined to form a C-shaped jaw;

[0007] The guide needle sleeve is arranged on the first forceps tip, and the bottom of the guide needle sleeve has a puncture portion, the puncture tip of the puncture portion is close to the parallel clamping assembly, and the puncture tip of the puncture portion is opposite to the tip of the second forceps tip, so that the Kirschner wire can avoid the second forceps tip when puncturing along the guide needle sleeve;

[0008] A depth limiting rod is provided on both the first clamp handle and the second clamp handle, and the depth limiting rod faces the C-shaped clamp opening.

[0009] In combination with the first aspect, the embodiment of the utility model provides a possible implementation of the first aspect, wherein the first clamp handle comprises a first clamp seat and a first clamp rod, and one end of the first clamp seat is pivotally connected to one end of the first clamp rod;

[0010] The second clamp handle comprises a second clamp seat and a second clamp rod, and one end of the second clamp seat is pivotally connected to one end of the second clamp rod;

[0011] The first clamp seat, the first clamp rod, the second clamp seat and the second clamp rod are all connected to the parallel clamping assembly.

[0012] In combination with the first aspect, the embodiment of the utility model provides a possible implementation of the first aspect, wherein the parallel clamping assembly comprises a first parallel driving rod and a second parallel driving rod, and the first parallel driving rod and the second parallel driving rod are pivotally connected in an X shape;

[0013] One end of the first parallel driving rod is fixedly connected to the first clamp seat, and the other end is slidably connected to the second clamp rod;

[0014] One end of the second parallel driving rod is fixedly connected to the second clamp seat, and the other end is slidably connected to the first clamp rod.

[0015] In combination with the first aspect, the embodiment of the utility model provides a possible implementation of the first aspect, wherein the pivotal connection between the first clamp seat and the first clamp rod and the connection between the first clamp seat and the first parallel driving rod overlap;

[0016] The pivotal connection between the second clamp seat and the second clamp rod and the connection between the second clamp seat and the second parallel driving rod overlap.

[0017] In combination with the first aspect, an embodiment of the utility model provides a possible implementation of the first aspect, wherein a first sliding groove for sliding the first parallel driving rod is provided on the first clamp rod.

[0018] In combination with the first aspect, an embodiment of the utility model provides a possible implementation of the first aspect, wherein a second sliding groove for sliding the second parallel driving rod is provided on the second clamp rod.

[0019] In combination with the first aspect, an embodiment of the utility model provides a possible implementation of the first aspect, wherein a depth limiting rod is provided on both the first clamp rod and the second clamp rod, and the depth limiting rod faces the C-shaped jaw.

[0020] In combination with the first aspect, an embodiment of the utility model provides a possible implementation of the first aspect, wherein both the first clamp rod and the second clamp rod are provided with threaded connection holes for installing the depth limiting rod to adjust the extension length of the depth limiting rod.

[0021] In combination with the first aspect, an embodiment of the utility model provides a possible implementation of the first aspect, wherein the second clamp seat is provided with an indicating caliper for indicating the distance between the first clamp seat and the second clamp seat.

[0022] In combination with the first aspect, an embodiment of the utility model provides a possible implementation of the first aspect, wherein a ratchet is provided on the above-mentioned indicating caliper, and a clamping hole for connecting with the ratchet is provided on the first clamp seat, and the diameter of the clamping hole is greater than the width of the indicating caliper.

[0023] Beneficial effects:

[0024] The utility model provides a patellar fracture reduction prepatellar depth-limiting Kirschner wire guide, comprising a first clamp handle, a second clamp handle, a parallel clamp assembly and a guide needle sleeve; the first clamp handle and the second clamp handle are connected by the parallel clamp assembly, and the first clamp tip on the first clamp handle and the second clamp tip of the second clamp handle are combined to form a C-shaped jaw; the guide needle sleeve is arranged on the first clamp tip, and the bottom of the guide needle sleeve has a puncture part, the puncture tip of the puncture part is close to the parallel clamp assembly, and the puncture tip of the puncture part is opposite to the tip of the second clamp tip, so that the Kirschner wire can avoid the second clamp tip when puncturing along the guide needle sleeve; both the first clamp handle and the second clamp handle are provided with a limited depth rod, and the depth rod faces the C-shaped jaw.

[0025] Specifically, during the open reduction and Kirschner wire tension band fixation procedure, the medical staff clamps the fractured patella with the first forceps tip and the second forceps tip. During the clamping process, the medical staff presses the first forceps handle and the second forceps handle, and then uses the parallel clamping assembly to make the first forceps tip and the second forceps tip parallel and close to each other, so that the extension line of the guide needle sleeve on the first forceps tip can point to the second forceps tip, so that when the medical staff inserts the Kirschner wire into the guide needle sleeve, the Kirschner wire can pass through the second forceps tip position, so that the medical staff can easily determine the entry point and exit point of the Kirschner wire, and the bottom of the guide needle sleeve has a penetration point. The puncture part, the puncture tip of the puncture part is close to the parallel clamping assembly, and the puncture tip of the puncture part is opposite to the tip of the second forceps. Through such an arrangement, the Kirschner wire will not collide with the second forceps tip when it is inserted, thereby avoiding secondary injury to the patient; moreover, the setting of the limit rod can limit the distance between the guide needle sleeve and the second forceps tip relative to the front edge of the patella, so that the Kirschner wire is inserted into the patella at 5 mm below the front edge of the patella, which meets the surgical requirements and avoids blind insertion and blind measurement by medical personnel, so that the position of the Kirschner wire meets the precise requirements, thereby improving the success rate of the operation and facilitating the patient's postoperative recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the structure of a patellar fracture reduction anterior patellar depth limiting Kirschner wire guide provided by an embodiment of the utility model;

[0028] Figure 2 A schematic diagram of the use of the patellar fracture reduction anterior patellar depth limiting Kirschner wire guide provided by the embodiment of the utility model;

[0029] Figure 3 A schematic diagram of the positions of a guide wire sleeve and a second forceps tip in a patellar fracture reduction anterior patellar depth limiting Kirschner wire guide provided in an embodiment of the utility model.

[0030] icon:

[0031] 100 - first clamp handle; 101 - first clamp tip; 110 - first clamp seat; 120 - first clamp rod; 121 - first slide groove;

[0032] 200 - second clamp handle; 201 - second clamp tip; 210 - second clamp seat; 220 - second clamp rod; 221 - second slide groove;

[0033] 300 - parallel clamping assembly; 310 - first parallel driving rod; 320 - second parallel driving rod;

[0034] 400 - guide needle sleeve;

[0035] 510 - depth limit rod; 520 - indicating caliper; 521 - ratchet;

[0036] 600 - Patella. DETAILED DESCRIPTION

[0037] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0042] See also Figure 1 , Figure 2 and Figure 3As shown, this embodiment provides a patellar fracture reduction prepatellar depth-limiting Kirschner wire guide, including a first clamp handle 100, a second clamp handle 200, a parallel clamp assembly 300 and a guide needle sleeve 400; the first clamp handle 100 and the second clamp handle 200 are connected by the parallel clamp assembly 300, and the first clamp tip 101 on the first clamp handle 100 and the second clamp tip 201 of the second clamp handle 200 are combined to form a C-shaped jaw; the guide needle sleeve 400 is arranged on the first clamp tip 101, and the bottom of the guide needle sleeve 400 has a puncture part, the puncture tip of the puncture part is close to the parallel clamp assembly 300, and the puncture tip of the puncture part is opposite to the tip of the second clamp tip 201, so that the Kirschner wire can avoid the second clamp tip 201 when puncturing along the guide needle sleeve 400; a limited depth rod 510 is provided on both the first clamp handle 100 and the second clamp handle 200, and the depth-limiting rod 510 faces the C-shaped jaw.

[0043] Specifically, during the open reduction and Kirschner wire tension band fixation procedure, the medical staff clamps the fractured patella 600 with the first forceps tip 101 and the second forceps tip 201. During the clamping process, the medical staff presses the first forceps handle 100 and the second forceps handle 200, and then uses the parallel clamping assembly 300 to make the first forceps tip 101 and the second forceps tip 201 parallel and close to each other, so that the extension line of the guide needle sleeve 400 on the first forceps tip 101 can point to the second forceps tip 201, so that the medical staff can insert the Kirschner wire guide needle sleeve 400, the Kirschner wire can pass through the second forceps tip 201, so that medical personnel can easily determine the entry and exit points of the Kirschner wire, avoiding blind puncture on the patella; and the bottom of the guide needle sleeve 400 has a puncture part, the puncture tip of the puncture part is close to the parallel clamping assembly 300, and the puncture tip of the puncture part is opposite to the tip of the second forceps tip 201. Through such an arrangement, the Kirschner wire will not collide with the second forceps tip 201 when it passes through, avoiding secondary injury to the patient.

[0044] Among them, when the medical staff presses the first clamp handle 100 and the second clamp handle 200, the puncture tip of the guide needle sleeve 400 and the second clamp tip 201 can always remain overlapped, that is, the Kirschner wire can point directly to the second clamp tip 201 when puncturing along the guide needle sleeve 400, so that when the patellar fracture reduction pre-patellar depth limiting Kirschner wire guide clamps the patient's patella, the entry point and exit point of the Kirschner wire can be determined, so that the medical staff can clearly indicate the entry point and exit point of the Kirschner wire; and because the center line of the guide needle sleeve 400 is staggered by a certain distance from the second clamp tip 201, the Kirschner wire can pass through the edge of the second clamp tip 201 when passing through the patient's patella along the guide needle sleeve 400, and will not collide with the second clamp tip 201.

[0045] In addition, the patellar fracture reduction anterior patellar depth limiting Kirschner wire guide provided in this embodiment can also play a role of temporary and auxiliary support of the patella.

[0046] It is also necessary to point out that a depth limiting rod 510 is provided on both the first clamp handle 100 and the second clamp handle 200, and the depth limiting rod 510 faces the C-shaped jaws. When in use, the depth limiting rod 510 can abut against the front edge of the patient's patella, thereby limiting the distance between the guide needle sleeve 400 and the second clamp tip 201 relative to the front edge of the patella, so that the insertion position of the Kirschner wire on the patella is 5 mm below the front edge of the patella, which meets the surgical requirements, avoids blind insertion and blind testing by medical personnel, and ensures that the position of the Kirschner wire meets the precise requirements, thereby improving the success rate of the operation and facilitating the patient's postoperative recovery.

[0047] See also Figure 1 , Figure 2 and Figure 3 As shown, in an optional scheme of this embodiment, the first clamp handle 100 includes a first clamp seat 110 and a first clamp rod 120, and one end of the first clamp seat 110 is pivotally connected to one end of the first clamp rod 120; the second clamp handle 200 includes a second clamp seat 210 and a second clamp rod 220, and one end of the second clamp seat 210 is pivotally connected to one end of the second clamp rod 220; the first clamp seat 110, the first clamp rod 120, the second clamp seat 210 and the second clamp rod 220 are all connected to the parallel clamping assembly 300.

[0048] Among them, the parallel clamping assembly 300 includes a first parallel driving rod 310 and a second parallel driving rod 320, and the first parallel driving rod 310 and the second parallel driving rod 320 are pivotally connected in an X shape; one end of the first parallel driving rod 310 is fixedly connected to the first clamp seat 110, and the other end is slidably connected to the second clamp rod 220; one end of the second parallel driving rod 320 is fixedly connected to the second clamp seat 210, and the other end is slidably connected to the first clamp rod 120.

[0049] Among them, the pivot joint of the first clamp seat 110 and the first clamp rod 120 and the connection between the first clamp seat 110 and the first parallel driving rod 310 overlap; the pivot joint of the second clamp seat 210 and the second clamp rod 220 and the connection between the second clamp seat 210 and the second parallel driving rod 320 overlap.

[0050] The first clamp rod 120 is provided with a first sliding groove 121 for the first parallel driving rod 310 to slide.

[0051] The second clamp rod 220 is provided with a second sliding groove 221 for the second parallel driving rod 320 to slide.

[0052] When the medical staff presses the first clamp seat 110 and the second clamp seat 210, the first clamp seat 110 and the second clamp seat 210 approach each other, and at the same time, the first parallel driving rod 310 and the second parallel driving rod 320 connected to the first clamp seat 110 and the second clamp seat 210 swing relative to each other, so that the end of the first parallel driving rod 310 away from the first seat moves along the first slide groove 121 toward the direction away from the first seat, and the end of the parallel driving rod away from the second seat moves along the second slide groove 221 toward the direction away from the second seat, so that the first clamp rod 120 and the second clamp rod 220 approach each other, so that the first clamp tip 101 and the second clamp tip 201 approach each other, and in this process, the first clamp tip 101 and the second clamp tip 201 approach each other in the vertical direction, and there will be no horizontal deviation between the two, so that the Kirschner wire can penetrate the patella 600 from the first clamp tip 101 and then pass out from the second clamp tip 201.

[0053] See also Figure 1 , Figure 2 and Figure 3 As shown, in an optional solution of this embodiment, a depth limiting rod 510 is provided on both the first clamp rod 120 and the second clamp rod 220 , and the depth limiting rod 510 faces the C-shaped jaws.

[0054] Wherein, both the first clamp rod 120 and the second clamp rod 220 are provided with threaded connection holes for installing the depth limiting rod 510 so as to adjust the extension length of the depth limiting rod 510 .

[0055] Specifically, a depth limiting rod 510 is provided on both the first clamp rod 120 and the second clamp rod 220. During use, the depth limiting rod 510 can be used to adjust the deepest position of the first clamp tip 101 and the second clamp tip 201 to clamp the patella 600. That is, the distance between the guide needle sleeve 400 and the second clamp tip 201 relative to the front edge of the patella is adjusted.

[0056] Moreover, during use, the depth limiting rod 510 can contact the patella 600, changing from a two-point contact between the first forceps tip 101 and the second forceps tip 201 to a four-point contact formed by the first forceps tip 101 and the second forceps tip 201 and the two depth limiting rods 510, thereby improving the stability of the prepatellar depth limiting Kirschner wire guide for patellar fracture reduction.

[0057] See also Figure 1 , Figure 2 and Figure 3 As shown, in an optional solution of this embodiment, an indicating caliper 520 for indicating the opening distance between the first clamp seat 110 and the second clamp seat 210 is provided on the second clamp seat 210 .

[0058] The indicating caliper 520 is provided with a ratchet 521 , and the first clamp seat 110 is provided with a clamp hole for connecting with the ratchet 521 , and the diameter of the clamp hole is greater than the width of the indicating caliper 520 .

[0059] Specifically, an indicating caliper 520 for indicating the distance between the bottom of the guide needle sleeve 400 and the second forceps tip 201 is provided on the second forceps seat 210 . Medical personnel can conveniently know the distance between the guide needle sleeve 400 and the second forceps tip 201 through the reading of the indicating caliper 520 .

[0060] It should be noted that a blocking block for limiting the maximum opening distance between the guide needle sleeve 400 and the second forceps tip 201 is provided on the indicating caliper 520. For example, by providing the blocking block, the guide needle sleeve 400 and the second forceps tip 201 can be opened to a maximum of 20 mm. In addition, those skilled in the art can set the position of the blocking block according to actual needs to adjust the maximum opening distance between the guide needle sleeve 400 and the second forceps tip 201.

[0061] In addition, a ratchet 521 is provided on the indicating caliper 520, and a clamping hole for connecting with the ratchet 521 can be provided on the first clamp seat 110, and the diameter of the clamping hole is larger than the width of the indicating caliper 520. When the medical staff engages the first clamp seat 110 and the second clamp seat 210, the indicating caliper 520 gradually extends out of the first clamp seat 110 from the clamping hole, and the ratchet 521 on the indicating caliper 520 can be engaged with the clamping hole to prevent the indicating caliper 520 from retracting, thereby fixing the clamping state of both the guide needle sleeve 400 and the second clamp tip 201.

[0062] In addition, a resetting elastic member is provided on the first clamp seat 110 and the second clamp seat 210 so as to reset the first clamp seat and the second clamp seat 210 .

[0063] The tails of the first clamp seat 110 and the second clamp seat 210 are both provided with rough surfaces for medical personnel to hold, so as to improve the medical personnel's ability to better hold the first clamp seat 110 and the second clamp seat 210 and facilitate force application.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A patellar fracture reduction prepatellar depth limiting Kirschner wire guide, characterized in that: include: A first clamp handle (100), a second clamp handle (200), a parallel clamp assembly (300) and a guide needle sleeve (400); The first clamp handle (100) and the second clamp handle (200) are connected via the parallel clamp assembly (300), and a first clamp tip (101) on the first clamp handle (100) and a second clamp tip (201) on the second clamp handle (200) are combined to form a C-shaped jaw; The guide needle sleeve (400) is arranged on the first forceps tip (101), and the bottom of the guide needle sleeve (400) has a puncture portion, the puncture tip of the puncture portion is close to the parallel clamping assembly (300), and the puncture tip of the puncture portion is opposite to the tip of the second forceps tip (201), so that the Kirschner wire can avoid the second forceps tip (201) when puncturing along the guide needle sleeve (400); A depth limiting rod (510) is provided on both the first clamp handle (100) and the second clamp handle (200), and the depth limiting rod (510) faces the C-shaped clamp opening.

2. The patellar fracture reduction prepatellar depth limiting Kirschner wire guide according to claim 1, characterized in that: The first clamp handle (100) comprises a first clamp seat (110) and a first clamp rod (120), and one end of the first clamp seat (110) is pivotally connected to one end of the first clamp rod (120); The second clamp handle (200) comprises a second clamp seat (210) and a second clamp rod (220), and one end of the second clamp seat (210) is pivotally connected to one end of the second clamp rod (220); The first clamp seat (110), the first clamp rod (120), the second clamp seat (210) and the second clamp rod (220) are all connected to the parallel clamping assembly (300).

3. The patellar fracture reduction prepatellar depth limiting Kirschner wire guide according to claim 2, characterized in that: The parallel clamping assembly (300) comprises a first parallel driving rod (310) and a second parallel driving rod (320), wherein the first parallel driving rod (310) and the second parallel driving rod (320) are pivotally connected in an X shape; One end of the first parallel driving rod (310) is fixedly connected to the first clamp seat (110), and the other end is slidably connected to the second clamp rod (220); One end of the second parallel driving rod (320) is fixedly connected to the second clamp seat (210), and the other end is slidably connected to the first clamp rod (120).

4. The patellar fracture reduction prepatellar depth limiting Kirschner wire guide according to claim 3, characterized in that: The pivotal connection between the first clamp seat (110) and the first clamp rod (120) and the connection between the first clamp seat (110) and the first parallel driving rod (310) overlap; The pivotal connection between the second clamp seat (210) and the second clamp rod (220) and the connection between the second clamp seat (210) and the second parallel driving rod (320) overlap.

5. The patellar fracture reduction prepatellar depth limiting Kirschner wire guide according to claim 3, characterized in that: The first clamp rod (120) is provided with a first sliding groove (121) for the first parallel driving rod (310) to slide.

6. The patellar fracture reduction prepatellar depth limiting Kirschner wire guide according to claim 5, characterized in that: The second clamp rod (220) is provided with a second sliding groove (221) for the second parallel driving rod (320) to slide.

7. The patellar fracture reduction prepatellar depth limiting Kirschner wire guide according to claim 2, characterized in that: A depth limiting rod (510) is provided on both the first clamp rod (120) and the second clamp rod (220), and the depth limiting rod (510) faces the C-shaped clamp.

8. The patellar fracture reduction prepatellar depth limiting Kirschner wire guide according to claim 7, characterized in that: The first clamp rod (120) and the second clamp rod (220) are both provided with threaded connection holes for mounting the depth limiting rod (510) so as to adjust the extension length of the depth limiting rod (510).

9. The patellar fracture reduction prepatellar depth limiting Kirschner wire guide according to claim 3, characterized in that: The second clamp seat (210) is provided with an indicating caliper (520) for indicating the distance between the first clamp seat (110) and the second clamp seat (210).

10. The patellar fracture reduction and prepatellar depth limiting Kirschner wire guide according to claim 9, characterized in that: The indicating caliper (520) is provided with a ratchet (521), and the first clamp seat (110) is provided with a clamp hole for connecting with the ratchet (521), and the diameter of the clamp hole is greater than the width of the indicating caliper (520).

Images