Kirschner wire and operating device

Abstract

The utility model discloses a kirschner wire and an operating device, relates to the technical field of medical instruments, and solves the technical problem that the kirschner wire is inconvenient to put in and take out in the conventional device. The needle comprises a needle body, a limiting ring and a needle tail, the needle body is connected with the needle tail through a connecting part, a needle tip is arranged at one end of the needle body, the limiting ring is arranged at the other end of the needle body, at least one clamping groove is formed in the limiting ring in the circumferential direction of the outer surface, at least one limiting groove is formed in the limiting ring in the circumferential direction of the outer surface, and the needle tip is connected with the limiting ring. When the kirschner wire is placed in or taken out, the clamping groove and the limiting groove are matched with a kirschner wire operating device to fix the kirschner wire, and the kirschner wire fixing device has the advantages of being convenient to place in and take out the kirschner wire and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical apparatus and instruments, and particularly relates to a kirschner wire and operation device. BACKGROUND

[0002] The kirschner wire is a nail made of stainless steel or titanium alloy material after sterilization, grinding and smoothing, and is an internal fixation material commonly used in orthopedics, mainly used for fixing short fractures or avulsion fractures and other fractures with little stress, and is also suitable for temporarily fixing fracture blocks in orthopedic surgery. The kirschner wire mainly provides mechanical stability of the fracture site through the rigidity of its metal material to help the fracture healing. In actual application, through percutaneous needle fixation technology, the doctor can use an electric drill or a hand drill to penetrate the kirschner wire through the skin and the bone, connect, anastomose and fix the fracture blocks together. In short, the kirschner wire plays an important role in the treatment and rehabilitation of fractures.

[0003] In the file with the announcement number CN202051804U, a kirschner wire is disclosed, which includes a needle tip and a needle rod, a thread is arranged on the needle rod, and a limiting snap ring is threadedly connected to the tail of the needle rod. The arrangement of the thread makes the fixation of the kirschner wire in the bone more stable, and has the effect of preventing movement or sliding. The limiting snap ring is buried in the body to prevent the kirschner wire from moving into the human tissue along the long axis direction. In the file with the announcement number CN209826923U, a kirschner wire is disclosed, which includes a needle body and a needle tip. A thread is arranged on the needle body near the needle tip, a pre-bent needle tail is arranged at the tail of the needle body, and a groove is arranged on the needle body near the pre-bent needle tail. The pre-bent needle tail can be buried in the body to prevent the displacement of the kirschner wire and the bone block during the operation.

[0004] In the existing patents, in order to enhance the fixing strength and prevent the kirschner wire from slipping, a thread structure and a limiting structure are usually arranged on the surface of the kirschner wire. When the kirschner wire is screwed, a strong holding force can be generated in the bone, and due to the additional friction force provided by the thread structure, the possibility of internal fixation failure caused by slipping is reduced. However, in the existing patents, the arrangement of the needle body is not convenient for placement and subsequent removal.

[0005] In view of the problems existing in the prior art, it is necessary to study a kirschner wire which is convenient to place and remove. UTILITY MODEL CONTENTS

[0006] The utility model provides a kirschner wire and operation device, and aims to solve the technical problem that the existing device is not convenient for placing and removing the kirschner wire.

[0007] To solve the above-mentioned technical problems, the technical scheme adopted by the utility model is as follows:

[0008] A kirschner wire, including a needle body, a limiting ring and a needle tail,

[0009] The needle body and the needle tail are connected through a connecting part, one end of the needle body is provided with a needle tip, and the other end of the needle body is provided with the limiting ring,

[0010] At least one clamping groove is opened in the outer surface of the limiting ring in a circumferential direction, and at least one limiting groove is opened in the outer surface of the limiting ring in a circumferential direction, the clamping groove and the limiting groove cooperate to fix the Kirschner wire when the Kirschner wire is placed or taken out.

[0011] In the utility model, it needs to be explained that in actual use, the needle tip part penetrates into the bone to fix the bone, and after the Kirschner wire is placed, the limiting ring can be buried in the patient's body and increase the contact area with the tissue in the patient's body, so that the movement of the Kirschner wire along the axial direction of the Kirschner wire is limited by the limiting ring, so as to maintain the stability of the fracture and improve the treatment effect; in addition, the setting of the needle tail facilitates the placement of the Kirschner wire in the patient's body during the operation process, and after the placement of the Kirschner wire is completed, the needle tail part can be cut or broken;

[0012] In addition, in the utility model, in order to improve the stability and accuracy of operation when the Kirschner wire is taken out or placed, and prevent the Kirschner wire from slipping, the limiting groove and the clamping groove are arranged on the limiting ring, the clamping groove can cooperate with the operation device to limit the rotation of the Kirschner wire after the limiting ring of the Kirschner wire is inserted into the Kirschner wire operation device, and the limiting groove can cooperate with the Kirschner wire operation device to limit the movement of the Kirschner wire along the axial direction of the needle body, so that the stability of the Kirschner wire operation is improved, the operation is facilitated, and the device realizes the placement and taking out of the Kirschner wire by relying on one operation device, thereby reducing the use cost.

[0013] Preferably, the clamping groove and the limiting groove are arranged adjacent to each other, the clamping groove is spaced apart from the adjacent limiting groove by 60 degrees, and the clamping groove and the limiting groove are each provided as three.

[0014] In the utility model, preferably, three clamping grooves and three limiting grooves are arranged, so as to provide more stable limiting for the subsequent Kirschner wire operation device.

[0015] Preferably, the end of the limiting ring away from the needle tail is provided with a protruding part.

[0016] After the technical scheme is adopted, it needs to be explained that the protruding part is arc-shaped, the protruding part of the limiting ring contacts the surface of the fixed part after the Kirschner wire is screwed in, or contacts the side of the Kirschner wire insertion hole, so as to improve the contact area with the fixed part and make the fixing effect better.

[0017] Preferably, the cross section of the connecting part is circular or regular polygonal.

[0018] The connecting part is inserted into the inside of the Kirschner wire operating device to increase the contact area of the Kirschner wire and the operating device, and improve the stability during operation, especially during screwing.

[0019] Preferably, the cross section of the connecting part is a regular hexagon.

[0020] The connecting part is hexagonal, which provides stable rotation limiting during subsequent screwing of the Kirschner wire operating device.

[0021] Preferably, the front end surface of the needle body is provided with threads.

[0022] The height and pitch of the threads are large, so that the contact area of the threaded surface and the bone is larger, the fixing effect is better, and the length of the threaded section accounts for half of the length of the needle body.

[0023] Preferably, a pre-breaking groove is arranged circumferentially between the connecting part and the needle tail.

[0024] When the Kirschner wire is placed, the needle tail is broken, so the pre-breaking groove is more convenient for subsequent breaking or intermittent of the needle tail, and improves the work efficiency.

[0025] A Kirschner wire operating device includes an operating rod and a limiting assembly,

[0026] One end of the operating rod is internally provided with a first limiting hole, a second limiting hole and a third limiting hole in sequence, the limiting ring, the connecting part and the needle tail can be matched with the first limiting hole, the second limiting hole and the third limiting hole respectively, and the first limiting hole is internally rotatably provided with the limiting assembly;

[0027] The limiting assembly includes a rotating ring, and at least one fixing assembly is arranged on the inner wall of the rotating ring, which limits the Kirschner wire when the limiting ring is inserted into the first limiting hole.

[0028] The first limiting hole is provided with a limiting strip matched with the clamping groove.

[0029] With the technical scheme, it is to be noted that when the Kirschner wire is inserted or taken out, the limiting strip is inserted into the corresponding clamping groove, and after insertion, the limiting groove and the fixing assembly will correspond, when the Kirschner wire is inserted, the needle tail is inserted into the operating rod, and when it is inserted to the innermost end, the fixing assembly will just correspond to the limiting groove, at this time, the fixing assembly cooperates with the limiting groove to fix the Kirschner wire, and the movement of the Kirschner wire along the axial direction of the needle body is limited, and the limiting strip will cooperate with the clamping groove to limit the rotation of the Kirschner wire, and the cooperation facilitates the insertion of the Kirschner wire and is more accurate; when the Kirschner wire is taken out, the limiting ring is inserted into the innermost end of the first limiting hole, and the principle of fixing the Kirschner wire is the same as above, after limiting the movement of the Kirschner wire, it is convenient to twist and pull out the Kirschner wire.

[0030] In addition, it is to be noted that when the Kirschner wire is inserted to the innermost end of the operating rod, the end face of the operating rod provided with the first limiting hole is flush with the junction of the limiting ring body and the protruding part, therefore, when the protruding part of the limiting ring is inserted into the bone, the operating rod can also cooperate with the Kirschner wire and be limited.

[0031] Further, the fixing assembly comprises a limiting plate, and an elastic member is connected between the limiting plate and the inner wall of the rotating ring.

[0032] With the technical scheme, it is to be noted that when the elastic member is at a free length, the limiting plate can be placed inside the limiting groove to achieve limiting.

[0033] Further, the first limiting hole is provided with a rotating cavity, the operating rod is provided with a rotating groove, the rotating groove is in communication with the rotating cavity, the rotating ring is rotatably arranged in the rotating cavity, the rotating ring is provided with a pushing block, and the pushing block is arranged in the rotating groove and extends outward.

[0034] With the technical scheme, it is to be noted that the pushing block will facilitate the pushing of the rotating ring, and it is to be noted that the fixing assembly can be arranged in the rotating cavity, and will not hinder the Kirschner wire during insertion of the Kirschner wire.

[0035] Further, at least one long hole is opened on the side wall of the rotating cavity, the long hole is in communication with the rotating cavity and the first limiting hole, and the limiting plate can extend to the center of the first limiting hole through the long hole.

[0036] After the technical scheme is applied, it should be noted that the size of the long hole is larger than the size of the limiting plate, so that the limiting plate can pass through the long hole, in the default state, the fixing assembly is completely located in the rotating cavity, and the elastic member is compressed and generates elastic force under the extrusion of the inner wall of the rotating cavity; when the kirsch needle is inserted into the innermost part of the operating rod, the position of the long hole will correspond to the position of the limiting groove, then the knob is pushed to rotate the rotating ring, the rotating ring will drive the fixing assembly to rotate, until the limiting plate is rotated to the long hole, the limiting plate is elastically inserted into the limiting groove under the elastic force of the elastic member, and the limiting is realized; when the contact limiting is required, the knob is pushed in the reverse direction to rotate the rotating ring in the reverse direction, the rotating ring drives the fixing assembly to rotate, at this time, the limiting plate will be in contact with the long hole, and with the continuous rotation of the rotating ring, the long hole will continuously extrude the limiting plate to make the elastic member shrink, until the rotation of the rotating ring makes the limiting plate completely located in the rotating cavity, at this time, the limiting on the kirsch needle is released, and the kirsch needle can be removed.

[0037] Preferably, the shape of the second limiting hole is matched with the connecting part, and the fixing assembly is provided in three, and the three fixing assemblies are provided at intervals of 120 degrees.

[0038] After the technical scheme is applied, it should be noted that the fixing assembly is provided corresponding to the limiting groove, so as to improve the limiting stability, in the utility model, the cross section of the second limiting hole is preferably a regular hexagon, so as to match the shape of the connecting part, therefore, after the connecting part is inserted into the second limiting hole, the mutual cooperation further limits the rotation of the kirsch needle, so that the operating rod is more stable when being screwed.

[0039] Preferably, the limiting plate is semicircular, when the rotating ring is rotated, the semicircular structure of the limiting plate will facilitate the extrusion with the limiting groove, so as to prevent the limiting groove from being stuck with the limiting plate.

[0040] Preferably, the diameter of the needle body is 3mm, the thickness of the limiting ring is 2-3mm, and the height of the thread is 0.3-1mm.

[0041] The use steps of the utility model are as follows:

[0042] Inserting the kirsch needle: first, confirm that the limiting plate of the fixing assembly is located in the rotating cavity, that is, the limiting plate does not pass through the long hole, if the limiting plate passes through the long hole, rotate the rotating ring to make the limiting plate located in the rotating cavity, then insert the limiting strip in the first limiting hole of the operating rod into the clamping groove on the limiting ring of the kirsch needle, until the kirsch needle is inserted into the innermost part of the operating rod, at this time, the limiting groove corresponds to the long hole, rotate the rotating ring, until the limiting plate corresponds to the long hole, the limiting plate is elastically inserted into the limiting groove under the elastic force of the elastic member, the limiting on the kirsch needle along the axial direction of the needle body is realized, the needle tip is aligned with the part to be fixed, the operating rod is screwed into the part to be fixed, after the insertion is completed, the knob is rotated in the reverse direction, so that the limiting plate is rotated into the rotating cavity again, at this time, the limiting is released, then the operating rod can be taken out, and the needle tail is cut or broken along the pre-breaking groove;

[0043] Take out the needle: the limit strip in the first limit hole of the operating rod is inserted into the clamping groove on the limit ring of the needle, until the needle is inserted into the innermost end of the operating rod, at this time the limit slot corresponds to the long hole, rotate the rotating ring to make the limit plate cooperate with the limit slot, realize the limit, the specific limit principle is the same as the above limit principle of inserting the needle, then rotate the operating rod to take out the needle, and the release limit principle is the same as the above principle of releasing the limit of the needle.

[0044] In summary, due to the adoption of the above technical scheme, the beneficial effects of the utility model are:

[0045] 1. The utility model provides a kind of needle and operating device of Kirschner, by being provided with limit slot and clamping groove on limit ring, and being provided with operating rod and limit component, after the limit ring of Kirschner is inserted into Kirschner operating device, clamping groove can be cooperated with operating device to limit the rotation of Kirschner, and limit slot can be cooperated with Kirschner operating device to limit the movement of Kirschner along the axial direction of needle body, to improve the stability when operating Kirschner, facilitate operation, and this device realizes the insertion and extraction of Kirschner by one operating device, reduces use cost.

[0046] 2. The utility model provides a kind of needle and operating device of Kirschner, by being provided with arc-shaped protruding portion at one end of limit ring, after being screwed into Kirschner, protruding portion of limit ring will contact the surface of fixed part, or contact with the side of Kirschner insertion hole, to improve the contact area with fixed part, so that the fixing effect is better.

[0047] 3. The utility model provides a kind of needle and operating device of Kirschner, by being provided with regular hexagon as the section of second limit hole and connecting portion, to increase the contact area of Kirschner and second limit hole, improve the stability when screwing.

[0048] 4. The utility model provides a kind of needle and operating device of Kirschner, by being provided with semicircular limit plate, when rotating rotating ring, the semicircular structure of limit plate will facilitate extrusion with limit slot, prevent limit slot from jamming limit plate EXPLANATION OF DRAWINGS

[0049] The utility model will be explained by example and with reference to the mode of the accompanying drawings, wherein:

[0050] Figure 1 It is the whole structure schematic diagram of the utility model;

[0051] Figure 2 It is the whole schematic diagram of the utility model Kirschner needle;

[0052] Figure 3 It is the structure schematic diagram of the utility model Kirschner needle operating device;

[0053] Figure 4 For the utility model Figure 3 The enlarged schematic view of the middle I place;

[0054] Figure 5 For the utility model limit component structure schematic view;

[0055] Figure 6 For the utility model kish needle operation device sectional view.

[0056] Reference signs:

[0057] 1-needle body, 101-needle tip, 102-thread, 2-limit ring, 201-slot, 202-limit slot, 203-protruding part, 3-connection part, 4-operation rod, 401-rotation groove, 402-long hole, 5-limit component, 501-rotation ring, 502-pushing block, 503-limit plate, 504-elastic member, 6-needle tail, 7-pre-broken groove, 8-first limit hole, 9-rotation cavity, 10-second limit hole, 11-third limit hole, 12-limit strip. Specific implementation

[0058] To make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the embodiments of the present application and the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and indicated in the drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0059] In the description of the embodiments of the present application, it should be noted that the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship commonly placed when the utility product is used, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0060] The embodiments of the present application will be described below in conjunction with Figures 1-5 The utility model will be described in detail.

[0061] Embodiment 1

[0062] A Kirschner wire, as shown in Figure 1 , Figure 2 comprises a needle body 1, a limiting ring 2 and a needle tail 6,

[0063] The needle body 1 and the needle tail 6 are connected through a connecting part 3, one end of the needle body 1 is provided with a needle tip 101, and the other end of the needle body 1 is provided with the limiting ring 2,

[0064] At least one clamping groove 201 is opened in the outer surface of the limiting ring 2 in a circumferential direction, and at least one limiting groove 202 is opened in the outer surface of the limiting ring 2 in a circumferential direction, and when the Kirschner wire is placed or taken out, the clamping groove 201 and the limiting groove 202 will cooperate with the Kirschner wire operation device to fix the Kirschner wire.

[0065] The cross section of the connecting part 3 is circular or regular polygon.

[0066] The front end surface of the needle body 1 is provided with a thread 102.

[0067] A pre-broken groove 7 is circumferentially arranged between the connecting part 3 and the needle tail 6.

[0068] The diameter of the needle body 1 is 3mm, the thickness of the limiting ring 2 is 2-3mm, and the tooth height of the thread 102 is 0.3-1mm.

[0069] In the embodiment, the needle tip 101 part penetrates into the bone to fix the bone, and after the Kirschner wire is placed, the limiting ring 2 can be embedded in the patient's body and increase the contact area with the tissue in the patient's body, so that the movement of the Kirschner wire along the axial direction of the Kirschner wire is limited by the limiting ring 2, so as to maintain the stability of the fracture and improve the treatment effect; in addition, the setting of the needle tail 6 facilitates the placement of the Kirschner wire in the patient's body during the operation, and after the Kirschner wire is placed, the needle tail 6 part is cut or broken;

[0070] In addition, in the utility model, in order to improve the stability and accuracy of operation when the Kirschner wire is taken out or placed, and prevent the Kirschner wire from slipping, the limiting groove 202 and the clamping groove 201 are arranged on the limiting ring 2, after the limiting ring 2 of the Kirschner wire is inserted into the Kirschner wire operation device, the clamping groove 201 can cooperate with the operation device to limit the rotation of the Kirschner wire, and the limiting groove 202 can cooperate with the Kirschner wire operation device to further limit the movement of the Kirschner wire along the axial direction of the needle body, thereby improving the stability of the Kirschner wire operation, facilitating operation, and the device realizes the placement and taking out of the Kirschner wire by relying on one operation device, thereby reducing the use cost.

[0071] Finally, in the embodiment, the thread makes the contact area of the Kirschner wire with the bone larger, and the fixing effect is better, and the pre-broken groove 7 arranged will be more convenient for subsequent breaking or intermittent of the needle tail 6, thereby improving the work efficiency.

[0072] Embodiment 2

[0073] The difference between this embodiment and embodiment 1 is that, as shown in Figure 1 , Figure 2 the clamping groove 201 is arranged adjacent to the limiting groove 202, the clamping groove 201 is spaced 60° from the adjacent limiting groove 202, and the clamping groove 201 and the limiting groove 202 are both provided with three, providing a more stable limiting for the subsequent Kirschner wire operation device.

[0074] Embodiment 3

[0075] The difference between this embodiment and embodiment 2 is that, as shown in Figure 2 the end of the limiting ring 2 away from the needle tail 6 is provided with a protruding portion 203.

[0076] In this embodiment, the protruding portion 203 is arc-shaped, after the Kirschner wire is screwed in, the protruding portion 203 of the limiting ring 2 will contact the surface of the fixed part, or contact the side of the Kirschner wire insertion hole, to improve the contact area with the fixed part, and the fixing effect is better.

[0077] Embodiment 4

[0078] A Kirschner wire operation device, as shown in Figures 3-6 , comprising an operating rod 4 and a limiting assembly 5,

[0079] the operating rod 4 is provided with a first limiting hole 8, a second limiting hole 10 and a third limiting hole 11 inside one end in sequence, the limiting ring 2, the connecting portion 3 and the needle tail 6 can be matched with the first limiting hole 8, the second limiting hole 10 and the third limiting hole 11 respectively, and the first limiting hole 8 is provided with the limiting assembly 5 rotatably inside;

[0080] the limiting assembly 5 comprises a rotating ring 501, and the inner wall of the rotating ring 501 is provided with at least one fixing assembly, when the limiting ring 2 is inserted into the first limiting hole 8, the fixing assembly will limit the Kirschner wire;

[0081] the first limiting hole 8 is provided with a limiting strip 12 which can be matched with the clamping groove 201.

[0082] the fixing assembly comprises a limiting plate 503, and the limiting plate 503 is connected with the inner wall of the rotating ring 501 through an elastic member 504.

[0083] The first limiting hole 8 is internally provided with a rotating cavity 9, the operating rod 4 is provided with a rotating groove 401, the rotating groove 401 is communicated with the rotating cavity 9, the rotating ring 501 is rotatably arranged in the rotating cavity 9, the rotating ring 501 is provided with a pushing block 502, and the pushing block 502 is arranged in the rotating groove 401 and extends outward.

[0084] At least one long hole 402 is formed in the sidewall of the rotating cavity 9, the long hole 402 is communicated with the rotating cavity 9 and the first limiting hole 8, and the limiting plate 503 can extend to the center of the first limiting hole 8 through the long hole 402.

[0085] In the embodiment, in a default state, the fixing assembly is completely located in the rotating cavity 9, and the elastic element 504 is compressed and generates elastic force under the extrusion of the inner wall of the rotating cavity 9; when the Kirschner wire is inserted into the innermost part of the operating rod 4, the position of the long hole 402 corresponds to the position of the limiting groove 202; then the pushing block 502 is pushed to rotate the rotating ring 501, the rotating ring 501 drives the fixing assembly to rotate, until the limiting plate 503 is rotated to the position of the long hole 402, and the limiting plate 503 is elastically inserted into the limiting groove 202 under the elastic force of the elastic element 504, so that the limiting is realized; when the contact limiting is needed, the pushing block 502 is reversely pushed to reversely rotate the rotating ring 501, the rotating ring 501 drives the fixing assembly to rotate, at this time, the limiting plate 503 is in contact with the long hole 402, with the continuous rotation of the rotating ring 501, the long hole 402 continuously extrudes the limiting plate 503 to make the elastic element 504 shrink, until the rotation of the rotating ring 501 makes the limiting plate 503 completely located in the rotating cavity 9, at this time, the limiting of the Kirschner wire is released, and the Kirschner wire can be removed.

[0086] Embodiment 6

[0087] The difference between the embodiment and the embodiment 5 is that, as shown in the figure, the shape of the second limiting hole 10 is matched with the connecting part 3, the fixing assembly, the long hole 402 and the limiting strip are all provided with three, two adjacent fixing assemblies are arranged at an interval of 120°, two adjacent long holes 402 are arranged at an interval of 120°, and two adjacent limiting strips are arranged at an interval of 120°. Figures 3-6 In the embodiment, the cross-sectional shape of the second limiting hole 10 and the cross-sectional shape of the connecting part 3 are both regular hexagons, after the connecting part 3 is inserted into the second limiting hole 10, the mutual cooperation further limits the rotation of the Kirschner wire, so that the operating rod 4 is more stable when being twisted.

[0088] The use steps of the utility model are as follows:

[0089]

[0090] ​Inserting the Kirschner wire: first confirm that the limiting plate 503 of the fixing assembly is located inside the rotating cavity 9, that is, it does not pass out of the long hole 402, if the limiting plate 503 passes out of the long hole 402, rotate the rotating ring 501 to make the limiting plate 503 located inside the rotating cavity 9, then insert the limiting strip 12 in the first limiting hole 8 of the operating rod 4 into the clamping groove 201 on the Kirschner wire limiting ring 2 until the Kirschner wire is inserted into the innermost end of the operating rod 4, at this time the limiting groove 202 corresponds to the long hole 402, rotate the rotating ring 501 until the limiting plate 503 corresponds to the long hole 402, under the elastic force of the elastic member 504, the limiting plate 503 is elastically inserted into the limiting groove 202, the limiting of the movement of the Kirschner wire along the axis of the needle body is realized, the needle tip 101 is aligned with the part to be fixed, the operating rod 4 is twisted to make the screw thread 102 screw into the part to be fixed, after the insertion is completed, the knob 502 is reversely rotated to make the limiting plate 503 re-rotate into the inside of the rotating cavity 9, at this time the limiting is released, then the operating rod 4 can be taken out, and the needle tail 6 is cut or broken along the pre-breaking groove 7;

[0091] Taking out the Kirschner wire: insert the limiting strip 12 in the first limiting hole 8 of the operating rod 4 into the clamping groove 201 on the Kirschner wire limiting ring 2 until the Kirschner wire is inserted into the innermost end of the operating rod 4, at this time the limiting groove 202 corresponds to the long hole 402, rotate the rotating ring 501 to make the limiting plate 503 cooperate with the limiting groove 202, the limiting is realized, the specific limiting principle is the same as the above-mentioned limiting principle of inserting the Kirschner wire, then the operating rod 4 is rotated to unscrew the Kirschner wire, the releasing principle is the same as the above-mentioned principle of releasing the Kirschner wire limiting.

[0092] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A K-wire, characterized in that The utility model relates to a kind of Kirschner wire, including needle body (1), limiting ring (2) and needle tail (6), The needle body (1) and the needle tail (6) are connected by connecting portion (3), one end of the needle body (1) is provided with needle tip (101), the limiting ring (2) is provided on the other end of the needle body (1), The limiting ring (2) is opened at least one clamping groove (201) along the outer surface circumferentially, the limiting ring (2) is opened at least one limiting groove (202) along the outer surface circumferentially, when Kirschner wire is placed or taken out, the clamping groove (201) and the limiting groove (202) will cooperate Kirschner wire operating device to fix Kirschner wire.

2. A K-wire according to claim 1, characterized in that: The clamping groove (201) is arranged adjacent to the limiting groove (202), the clamping groove (201) is spaced apart from the adjacent limiting groove (202) by 60 °, the clamping groove (201) and the limiting groove (202) are all provided as 3.

3. A K-wire according to claim 1 or 2, characterized in that: The limiting ring (2) is provided with protruding portion (203) at one end away from the needle tail (6).

4. A K-wire according to claim 1 or 2, characterized in that: The cross section of the connecting portion (3) is circular or regular polygon.

5. A K-wire according to claim 1 or 2, characterized in that: The surface of the needle body (1) is provided with thread (102).

6. A device for operating a K-wire according to any one of claims 1-5, characterized in that: The utility model relates to a kind of Kirschner wire operating device, including operating rod (4) and limiting component (5), One end of the operating rod (4) is sequentially provided with first limiting hole (8), second limiting hole (10) and third limiting hole (11) inside, the limiting ring (2), connecting portion (3) and the needle tail (6) can be respectively matched with first limiting hole (8), second limiting hole (10) and third limiting hole (11), the first limiting hole (8) is rotatably provided with the limiting component (5); The limiting component (5) includes rotating ring (501), at least one fixed component is arranged on the inner wall of the rotating ring (501), when the limiting ring (2) is inserted into the first limiting hole (8), the fixed component will limit the Kirschner wire; The first limiting hole (8) is provided with limiting strip (12) that can be matched with the clamping groove (201).

7. The K-wire handler of claim 6, wherein: The fixed component includes limiting plate (503), and the limiting plate (503) is connected with the inner wall of the rotating ring (501) by elastic member (504).

8. The K-wire handler of claim 7, wherein: The first limiting hole (8) is provided with rotating cavity (9) in the side wall, the operating rod (4) is provided with rotating groove (401), the rotating groove (401) is communicated with the rotating cavity (9), the rotating ring (501) is rotatably arranged in the rotating cavity (9), the rotating ring (501) is provided with shift block (502), the shift block (502) is arranged in the rotating groove (401) and extends outward.

9. The K-wire handler of claim 8, wherein: At least one long hole (402) is opened on the side wall of the rotating cavity (9), the long hole (402) is communicated with the rotating cavity (9) and first limiting hole (8), the limiting plate (503) can extend to the center of the first limiting hole (8) through the long hole (402).

10. The K-wire handling device of claim 9, wherein: The shape of the second limiting hole (10) is matched with the connecting portion (3), the fixed component is provided as 3, and the three fixed components are arranged at an interval of 120 °.

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