External fixing device for orthopedics department and clamping device and fixing needle for external fixing device

Abstract

The utility model provides an orthopedic external fixing device and a clamping device and a fixing needle used for the orthopedic external fixing device. The clamping device comprises a fixing plate and a clamping assembly. The fixing plate is provided with a through hole for the fixing needle to penetrate through, and the diameter of the through hole is larger than that of the fixing needle. A first clamping plate and a second clamping plate of the clamping assembly are arranged on the two sides of a fixing plate in the thickness direction respectively and used for being installed on a fixing needle, and the first clamping plate and the second clamping plate abut against the end faces of the two sides of the fixing plate respectively so as to limit movement of the fixing plate in the axial direction of the fixing needle. Friction force between the two clamping plates and the fixing plate can further limit movement of the fixing plate in the radial direction of the fixing needle, and therefore indirect connection between the fixing needle and the fixing plate is achieved. In the whole connecting process, the fixing needle can not make any direct contact with the fixing plate, the fixing needle can penetrate through the fixing plate at various angles, the requirement for the positioning precision of the fixing needle is lowered, the operation difficulty of a doctor is lowered, and the universality of the external fixing device for the orthopedics department is improved.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to an orthopedic external fixation device and a clamping device and a fixing needle used therefor. Background Art

[0002] When a limb is fractured, especially a severely comminuted fracture, it is usually accompanied by upward or downward displacement or angular dislocation of the bone, requiring the doctor to perform anatomical reduction of the bone during surgery. After the reduction is completed, a fixation device is required to fix the reduced bone to help the bone recover and heal as soon as possible. In the prior art, the methods used to achieve bone fixation after surgery are generally divided into internal fixation and external fixation.

[0003] The internal fixation device used in the internal fixation method is generally an internal fixation steel plate structure. The steel plate is placed in the patient's body so that the steel plate is in direct contact with the bone. The reduction accuracy and fixation reliability of this fixation method are relatively high. However, if the patient has an open fracture accompanied by more serious soft tissue damage, it will cause complications such as wound rupture, skin necrosis, and osteomyelitis. The internal fixation method will also damage the periosteum and blood supply, delay the fracture healing time, and delay the patient's recovery process.

[0004] The external fixation system used in external fixation is a device widely used in orthopedic treatment, especially in the treatment of complex fractures, bone defects and correction of deformities. It achieves bone stability and support by installing a bracket outside the fracture or the area that needs treatment. Although the external fixation system provides an effective treatment method in many cases, the analysis of its mechanical stability reveals the complexity and some potential limitations of the technology. The external fixation device used in the external fixation method mainly includes an external fixation bracket structure and an external fixation plate structure. The connection method used is usually a connecting rod method, and there are also some variants of fastening screws. Among them, the external fixation bracket structure is large in size and the frame is relatively bulky. The external fixation bracket is easily impacted during movement and has poor stability. After the position of the bone pin inserted into the bone is determined, it is necessary to rebuild the external mechanical system to maintain the stability of the position of the bone pin. The external system built usually uses a scaffolding model, which has poor mechanical stability and a large volume, and it is difficult to meet the needs of free movement. Of course, there are also special external fixation systems with strong mechanical stability, such as ring brackets, but they are large in size and require more bone pins for fixation; the external fixation plate structure is smaller in size and has better stability. Patients can wear the plate for early rehabilitation exercises and even live a normal life with weight bearing. The main working principle of the external fixation plate structure is similar to that of the internal fixation plate structure. Both achieve bone fixation through the cooperation of screws and plates. However, since the plate in the external fixation plate structure is placed outside the patient's body, it can reduce damage to the patient's injury and reduce complications.

[0005] However, the existing external fixation plate structure has strict limitations in actual use. The first is the location limitation. The existing external fixation plate structure is basically only suitable for areas such as the tibia and ankle that fit the bone morphology. The plates in these areas fit the bone morphology and are superficial. The length and strength of the screws used on the plate can meet the fixed working distance. Secondly, the use is limited. The principle of plate locking is that the tail of the screw exists in the matching thread embedded in the screw hole of the plate itself. And this matching thread must be at a fixed angle to achieve locking. If the angle changes slightly, the connection and fixation of the screw and the plate cannot be achieved. Therefore, during the connection process, the axis of the screw and the axis of the threaded hole need to be aligned as completely as possible to achieve the fixed connection between the screw and the plate. However, in the actual operation, it is difficult for the doctor to ensure that the screw is completely driven into the patient's bone at the set angle, which easily leads to the axis of the screw and the axis of the threaded hole not being completely aligned, making it difficult to connect the screw and the plate. Moreover, the external fixed steel plate structure is connected to multiple screws by a steel plate. This process requires ensuring that the axis of each screw can be aligned with the axis of the corresponding threaded hole on the steel plate to achieve the overall fixation of the external fixed steel plate structure. This process is extremely difficult and reduces the versatility of the external fixed steel plate structure. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the defect in the prior art that screws can only be inserted into steel plates at a fixed angle, resulting in great difficulty in connecting the two, and to provide an orthopedic external fixation device and a clamping device and a fixing pin therefor.

[0007] The utility model solves the above technical problems through the following technical solutions:

[0008] A clamping device for an orthopedic external fixation device, used for fixed connection with a fixing pin in the orthopedic external fixation device, the clamping device for the orthopedic external fixation device comprising a fixing plate and a clamping assembly;

[0009] The fixing plate is provided with a through hole for the fixing needle to pass through, the through hole penetrates through both ends of the fixing plate in the thickness direction, and the diameter of the through hole is larger than the diameter of the fixing needle that can pass through it;

[0010] The clamping assembly includes a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are respectively arranged on both sides of the fixing plate in the thickness direction, and are both used to be installed on the fixing needle, and an end surface of the first clamping plate facing the fixing plate and an end surface of the second clamping plate facing the fixing plate are respectively abutted against the end surfaces on the corresponding sides of the fixing plate.

[0011] In this solution, the diameter of the through hole is larger than the diameter of the fixing needle, the first splint and the second splint are fixed on the fixing needle, the fixing plate is clamped between the first splint and the second splint, the first splint and the second splint abut against the two side surfaces in the thickness direction of the fixing plate to limit the axial movement of the fixing plate on the fixing needle, and the friction between the two splints and the fixing plate can further limit the radial movement of the fixing plate on the fixing needle, thereby realizing an indirect connection between the fixing needle and the fixing plate. During the entire connection process, the fixing needle can have no direct contact with the fixing plate, so there is no need to control the axis of the fixing needle and the axis of the through hole of the fixing plate to be completely aligned as in the prior art. The fixing needle can pass through the fixing plate at various angles, with extremely high fault tolerance and strong adaptability, reducing the positioning accuracy requirements of the fixing needle, reducing the difficulty of the doctor's operation, and improving the versatility of the orthopedic external fixation device.

[0012] Preferably, the clamping assembly further comprises a first clamping member and a second clamping member;

[0013] The first clamping member is connected to the first clamping plate, and is used to keep the first clamping plate in the first position; when the first clamping plate is in the first position, an end surface of the first clamping plate facing the fixing plate abuts against an end surface of the fixing plate on a corresponding side;

[0014] The second clamping member is connected to the second clamping plate and is used to keep the second clamping plate in the second position; when the second clamping plate is in the second position, an end surface of the second clamping plate facing the fixing plate abuts against an end surface of the fixing plate on a corresponding side.

[0015] In this solution, the first clamping member is used to keep the first clamping plate and the fixing plate in contact, and the second clamping member is used to keep the second clamping plate and the fixing plate in contact, so as to avoid loosening of the connection between the fixing needle and the fixing plate and improve the reliability of the connection.

[0016] Preferably, the fixing needle passes through the first clamping plate and the second clamping plate, and the fixing needle includes a first external thread segment and a second external thread segment;

[0017] The first clamping plate comprises a first threaded hole, the first threaded hole is threadedly connected to the first external thread section, and the first clamping member is used to limit the first clamping plate from rotating around the axis of the first threaded hole;

[0018] The second clamping plate comprises a second threaded hole, the second threaded hole is threadedly connected to the second threaded section, and the second clamping member is used to limit the second clamping plate from rotating around the axis of the second threaded hole.

[0019] In this solution, the first clamp and the second clamp are connected to the fixing needle by threaded connection. The threaded structure can limit the movement of the first clamp and the second clamp in the axial direction of the fixing needle without rotating the first clamp and the second clamp, thereby achieving the initial fixation of the first clamp and the second clamp on the fixing needle. The first clamp prevents the first clamp and the second clamp from moving in the axial direction of the fixing needle by limiting the rotation of the first clamp around the axis of the first threaded hole and the second clamp prevents the first clamp and the second clamp from moving around the axis of the second threaded hole, thereby ensuring that the first clamp and the second clamp are always in contact with the fixing plate, thereby achieving a stable connection between the fixing needle and the fixing plate.

[0020] Preferably, the first clamping plate is provided with a first clamping hole, the first clamping hole is through at both ends of the first clamping plate in the thickness direction, the first clamping hole is provided with an internal thread, the first clamping piece is provided with an external thread, the first clamping piece is threadedly connected to the first clamping hole, and the first clamping piece abuts against the fixing plate;

[0021] The second clamping plate is provided with a second clamping hole, the second clamping hole is through at both ends of the second clamping plate in the thickness direction, the second clamping hole is provided with an internal thread, the second clamping piece is provided with an external thread, the second clamping piece is threadedly connected to the second clamping hole, and the second clamping piece abuts against the fixing plate.

[0022] In this solution, the first and second clamps are limited from rotating around the axis of the corresponding clamping holes through the cooperation between the hole wall of the threaded hole on the clamping plate and the fixing needle, and the first and second clamps are limited from rotating around the axis of the fixing needle through the cooperation between the hole wall of the clamping hole on the clamping plate and the corresponding clamping piece, and the positions of the first and second clamps are fixed under the joint action, thereby ensuring that the first and second clamps can always maintain contact with the fixing plate, and improving the stability of the connection between the fixing needle and the fixing plate. The two clamping pieces are in contact with the fixing plate, and the friction between the clamping piece and the fixing plate further increases the difficulty of the corresponding clamps from rotating, further ensuring that the positions of the first and second clamps are fixed, and improving the stability of the connection between the fixing needle and the fixing plate.

[0023] Preferably, the number of the first clamping holes and the number of the first clamping members are the same and both are multiple, the multiple first clamping holes are arranged at intervals along the circumference of the first clamping plate, and the multiple first clamping members and the multiple first clamping holes are arranged in one-to-one correspondence;

[0024] And / or, the number of the second clamping holes and the number of the second clamping members are the same and both are multiple, the multiple second clamping holes are arranged at intervals along the circumference of the second clamping plate, and the multiple second clamping members and the multiple second clamping holes are arranged in a one-to-one correspondence.

[0025] In this solution, the above arrangement, on the one hand, limits the rotation of the clamping plate relative to the fixing needle and the clamping member through the cooperation between the multiple clamping members and the multiple corresponding clamping holes. On the other hand, the abutment between the multiple clamping members and the fixing plate can increase the total friction between the clamping members and the fixing plate, further limiting the rotation of the clamping plate relative to the fixing needle and the clamping member.

[0026] Preferably, the projections of the first clamping plate on the fixing plate along the thickness direction of the fixing plate are all located on the fixing plate;

[0027] And / or, the projections of the second clamping plate on the fixing plate along the thickness direction of the fixing plate are all located on the fixing plate.

[0028] In this solution, the above arrangement prevents the splint from being exposed to the fixing plate, reducing the possibility of the splint rotating under the action of external force. On the other hand, it can increase the contact area between the splint and the fixing plate, increase the friction between the splint and the fixing plate, increase the area where the splint can connect to the clamping piece, and effectively limit the rotation of the splint relative to the fixing pin and the clamping piece.

[0029] Preferably, the through hole is a light hole.

[0030] In this solution, the processing accuracy requirements for the optical hole are low, and the doctor can even make holes in the fixation plate according to the angle of the fixation pin during the operation, further reducing the difficulty of the doctor's operation and improving the versatility of the orthopedic external fixation device.

[0031] A fixing needle for an orthopedic external fixation device is fixed by the clamping device for the orthopedic external fixation device as described above.

[0032] In this solution, the fixing pin in the orthopedic external fixation device is fixed in position by the clamping device mentioned above, which reduces the positioning accuracy requirements for the fixing pin, reduces the difficulty of the doctor's operation, and improves the versatility of the orthopedic external fixation device. In addition, the connection difficulty between the fixing pin and the clamping device is reduced, and the connection reliability is improved.

[0033] Preferably, the fixing needle for the orthopedic external fixation device meets one or more of the following conditions:

[0034] a. The thread of the first external thread section of the fixing needle and the thread of the second external thread section of the fixing needle are continuous; or, the fixing needle further includes a first non-threaded section, and the first non-threaded section is located between the first external thread section of the fixing needle and the second external thread section of the fixing needle;

[0035] b. The fixing needle further comprises a third external thread segment, and the third external thread segment is arranged on a side of the second external thread segment of the fixing needle away from the second external thread segment of the fixing needle;

[0036] The threads of the second external thread segment are continuous with the threads of the third external thread segment; or, the fixing needle further includes a second non-thread segment, and the second non-thread segment is located between the second external thread segment and the third external thread segment.

[0037] In this solution, the continuous thread of the first external thread section and the second external thread section can save the time spent on dividing the first external thread section and the second external thread section on the fixing needle. The discontinuity of the thread of the first external thread section and the second external thread section can realize the rapid positioning of the fixing plate relative to the fixing needle. The continuous thread of the second external thread section and the third external thread section can save the time spent on dividing the second external thread section and the third external thread section on the fixing needle. The discontinuity of the thread of the second external thread section and the third external thread section can realize the rapid positioning of the second clamping plate relative to the fixing needle.

[0038] An orthopedic external fixation device comprises the clamping device for the orthopedic external fixation device as described above and the fixing needle for the orthopedic external fixation device as described above, wherein the fixing needle passes through the through hole on the fixing plate.

[0039] The positive and progressive effects of the utility model are: the diameter of the through hole is larger than the diameter of the fixing needle, the first splint and the second splint are fixed on the fixing needle, the fixing plate is clamped between the first splint and the second splint, the first splint and the second splint abut against the two side surfaces in the thickness direction of the fixing plate to limit the movement of the fixing plate in the axial direction of the fixing needle, and the friction between the two splints and the fixing plate can further limit the movement of the fixing plate in the radial direction of the fixing needle, thereby realizing an indirect connection between the fixing needle and the fixing plate. During the entire connection process, the fixing needle can have no direct contact with the fixing plate, so there is no need to control the axis of the fixing needle and the axis of the through hole of the fixing plate to be completely aligned as in the prior art, the fixing needle can pass through the fixing plate at various angles, the fault tolerance rate is extremely high, the adaptability is extremely strong, the positioning accuracy requirements of the fixing needle are reduced, the difficulty of the doctor's operation is reduced, and the versatility of the orthopedic external fixation device is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 The figure is a three-dimensional structural diagram of an orthopedic external fixation device and a skeleton in accordance with an embodiment of the present invention.

[0041] Figure 2 The figure is a schematic diagram of the internal structure of an orthopedic external fixation device and a skeleton in accordance with an embodiment of the present invention.

[0042] Figure 3 The figure is a schematic diagram of the three-dimensional structure of an orthopedic external fixation device according to one embodiment of the utility model.

[0043] Figure 4Another three-dimensional structural schematic diagram of an orthopedic external fixation device according to an embodiment of the utility model.

[0044] Figure 5 The figure is a schematic top view of the structure of an orthopedic external fixation device according to one embodiment of the utility model.

[0045] Figure 6 It is a schematic diagram of the three-dimensional structure of a fixing plate according to an embodiment of the utility model.

[0046] Figure 7 The figure is a schematic diagram of a part of the internal structure of an orthopedic external fixation device according to an embodiment of the utility model.

[0047] Figure 8 It is a schematic diagram of the three-dimensional structure of the first clamping plate according to an embodiment of the utility model.

[0048] Fig. 9 It is a schematic diagram of the three-dimensional structure of the second clamping plate according to an embodiment of the utility model.

[0049] Fig.10 This is a structural schematic diagram of a first clamping plate in an embodiment of the utility model being clamped on a fixed plate by different numbers of first clamping members.

[0050] Fig.11 This is a schematic structural diagram of a second clamping plate in an embodiment of the utility model being clamped on a fixed plate by different numbers of second clamping members.

[0051] Fig.12 This is a schematic diagram of the internal structure of a fixing pin obliquely inserted into a fixing plate according to an embodiment of the utility model.

[0052] Description of reference numerals:

[0053] Fixed plate 1

[0054] Through hole 11

[0055] Fixed needle 2

[0056] First external thread section 21

[0057] Second external thread section 22

[0058] The third external thread section 23

[0059] Clamping assembly 3

[0060] First clamping plate 31

[0061] First threaded hole 311

[0062] First clamping hole 312

[0063] Second splint 32

[0064] Second threaded hole 321

[0065] Second clamping hole 322

[0066] First clamping member 33

[0067] Second clamping member 34

[0068] Skeleton 4 DETAILED DESCRIPTION

[0069] The present invention is further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments.

[0070] like Figure 1 and Figure 2 As shown, this embodiment discloses an orthopedic external fixation device, which is used to fix multiple bone segments 4 of a patient after repositioning after surgery, so as to help the patient's bones 4 recover and heal as quickly as possible.

[0071] like Figure 3-Figure 5 As shown, the orthopedic external fixation device includes a clamping device and a fixing needle 2 therefor. The fixing needle 2 is inserted into the patient's body to be connected to the patient's bone 4. The clamping device is arranged outside the patient's body and is fixedly connected to one end of the fixing needle 2 exposed outside the patient's body to achieve position fixation of the fixing needle 2.

[0072] Specifically, Figure 2 and Figure 6 As shown, the fixing plate 1 is provided with a through hole 11, and the through hole 11 is in the thickness direction of the fixing plate 1 ( Figure 2 The two ends of the fixing pin 2 in the Y direction of the fixing plate 1 are connected, and the fixing pin 2 passes through the fixing plate 1 in the thickness direction of the fixing plate 1 through the through hole 11. The diameter of the through hole 11 is larger than the diameter of the fixing pin 2, which facilitates the fixing pin 2 to pass through the fixing plate 1 at various angles, and the processing difficulty is lower.

[0073] Figure 5 The fixation plate 1 shown is a flat plate structure. In other alternative embodiments, the fixation plate 1 may also be partially bent to better fit the shape of the patient's bones 4 and improve the patient's usage experience.

[0074] Furthermore, the size of the fixing plate 1, the number of through holes 11 on the fixing plate 1, and the distance between two adjacent through holes 11 can be selected according to the patient's condition.

[0075] like Figure 2 As shown, one axial end of the fixing needle 2 includes a third external thread section 23, the third external thread section 23 of the fixing needle 2 has external threads, and the third external thread section 23 of the fixing needle 2 is inserted into the patient's body to connect with the patient's bone 4. The threaded connection method has high reliability and prevents the direct connection between the fixing needle 2 and the patient's bone 4 from being easily disconnected.

[0076] Furthermore, a Kirschner wire in the prior art can be selected as the fixing pin 2. The specific connection method between the fixing pin 2 and the bone 4 belongs to the prior art and will not be described in detail here.

[0077] like Figure 3 , Figure 4 , Figure 7-Figure 9 As shown, the clamping assembly 3 includes a first clamping plate 31 , a second clamping plate 32 , a first clamping member 33 and a second clamping member 34 .

[0078] like Figure 7 As shown, the first clamping plate 31 and the second clamping plate 32 are respectively arranged on both sides of the fixing plate 1 in the thickness direction, and are both installed on the fixing needle 2. One end face of the first clamping plate 31 facing the fixing plate 1 and one end face of the second clamping plate 32 facing the fixing plate 1 are respectively abutted against the end faces of the corresponding sides of the fixing plate 1.

[0079] Specifically, Figure 7-Figure 9 As shown, the first clamping plate 31 includes a first threaded hole 311, and the first threaded hole 311 passes through both ends of the first clamping plate 31 in the thickness direction. The second clamping plate 32 includes a second threaded hole 321, and the second threaded hole 321 passes through both ends of the second clamping plate 32 in the thickness direction. The axis of the first threaded hole 311 and the axis of the second threaded hole 321 coincide with the axis of the corresponding fixing needle 2. The fixing needle 2 passes through the first clamping plate 31 through the first threaded hole 311 and passes through the second clamping plate 32 through the second threaded hole 321. The fixing needle 2 includes a first external thread segment 21 and a second external thread segment 22. The first external thread segment 21 is arranged on the side of the second external thread segment 22 in the axial direction of the fixing needle 2 away from the third external thread segment 23. The first external thread section 21 and the second external thread section 22 both have external threads, the first threaded hole 311 is threadedly connected to the first external thread section 21 to realize the installation of the first clamping plate 31 on the fixing needle 2, and the second threaded hole 321 is threadedly connected to the second external thread section 22 to realize the installation of the second clamping plate 32 on the fixing needle 2. The threaded structure can limit the movement of the first clamping plate 31 and the second clamping plate 32 in the axial direction of the fixing needle 2 without rotating the first clamping plate 31 and the second clamping plate 32, thereby realizing the preliminary fixation of the first clamping plate 31 and the second clamping plate 32 on the fixing needle 2.

[0080] Furthermore, in the present embodiment, the threads of the first external thread segment 21, the second external thread segment 22 and the third external thread segment 23 are continuous, thereby saving the time consumed in dividing the first external thread segment 21, the second external thread segment 22 and the third external thread segment 23 on the fixing needle 2, and the first clamping plate 31 and the second clamping plate 32 have a larger installable area on the fixing needle 2, thereby improving the flexibility of fixation.

[0081] In other alternative embodiments, the thread of the first external thread segment 21 and the thread of the second external thread segment 22 may also be discontinuous, and the fixing needle 2 also includes a first unthreaded segment located between the first external thread segment 21 and the second external thread segment 22. The first unthreaded segment can serve as a positioning prompt for the fixing plate 1 to achieve rapid positioning of the fixing plate 1 relative to the fixing needle 2.

[0082] In other alternative embodiments, the thread of the second external thread segment 22 and the thread of the third external thread segment 23 may also be discontinuous, and the fixing needle 2 also includes a second unthreaded segment located between the second external thread segment 22 and the third external thread segment 23 to achieve rapid positioning of the second clamping plate 32 relative to the fixing needle 2.

[0083] In this embodiment, the first clamping plate 31 and the second clamping plate 32 have the same structure, that is, the shapes and sizes of the two are the same, so that only one type of clamping plate needs to be produced, which reduces the manufacturing cost, and the first clamping plate 31 and the second clamping plate 32 do not need to be distinguished during installation, which improves the installation efficiency. In other alternative embodiments, the first clamping plate 31 and the second clamping plate 32 may also adopt different structures.

[0084] like Figure 7 As shown, the first clamping plate 31 and the second clamping plate 32 are fixed on the fixing needle 2, and the fixing plate 1 is clamped between the first clamping plate 31 and the second clamping plate 32. The first clamping plate 31 and the second clamping plate 32 abut against the two side surfaces in the thickness direction of the fixing plate 1 to limit the axial movement of the fixing plate 1 on the fixing needle 2, and the friction force between the first clamping plate 31 and the fixing plate 1 and the friction force between the second clamping plate 32 and the fixing plate 1 can further limit the radial movement of the fixing plate 1 on the fixing needle 2, thereby realizing an indirect connection between the fixing needle 2 and the fixing plate 1.

[0085] During the entire connection process, the fixing pin 2 can have no direct contact with the fixing plate 1, so there is no need to control the axis of the fixing pin 2 and the axis of the through hole 11 of the fixing plate 1 to be completely aligned as in the prior art. The fixing pin 2 can pass through the fixing plate 1 at various angles, with a high fault tolerance and strong adaptability, which reduces the positioning accuracy requirements of the fixing pin 2, reduces the difficulty of the doctor's operation, and improves the versatility of the orthopedic external fixation device. Moreover, compared with the external fixation bracket structure in the prior art, the fixing plate 1 in this embodiment is an integrated structure with reliable strength and small size, which is convenient for patients' daily life.

[0086] Since the length and diameter of the screws in the external fixation steel plate structure in the prior art are limited by their material properties, it is impossible to increase the thickness and length indefinitely, otherwise the screws will easily break. Therefore, the external fixation steel plate structure in the prior art is basically only applicable to the tibia, ankle and other areas that fit the bone morphology and are superficial. The fixing needle 2 in the present application has many types of models to choose from and has high strength, which improves the stability of the orthopedic external fixation device and can be applied to fractures in more parts of the patient, further improving the versatility of the orthopedic external fixation device.

[0087] Furthermore, the through hole 11 in this embodiment is a light hole, and the processing accuracy requirement of the light hole is low. The doctor can even drill a hole in the fixing plate 1 according to the angle of the fixing pin 2 during the operation, further reducing the doctor's surgical difficulty and improving the versatility of the orthopedic external fixation device.

[0088] like Figure 3 and Figure 7 As shown, the first clamping member 33 is connected to the first clamping plate 31, and the first clamping member 33 is used to keep the first clamping plate 31 in the first position to keep the first clamping plate 31 in contact with the fixing plate 1, to prevent the connection between the fixing pin 2 and the fixing plate 1 from loosening, and to improve the reliability of the connection. It should be noted that the first position in this embodiment does not refer to a specific position on the fixing pin 2, but refers to the end face of the first clamping plate 31 facing the fixing plate 1 that can be in contact with the end face of the fixing plate 1 on the corresponding side ( Figure 7 The position at which the upper end surface of the middle fixing plate 1) abuts.

[0089] Specifically, since the first clamping plate 31 and the fixing needle 2 are threadedly connected, the first clamping member 33 in this embodiment is to limit the first clamping plate 31 from rotating around the axis of the first threaded hole 311 to limit the first clamping plate 31 from moving along the axial direction of the fixing needle 2, thereby ensuring that the first clamping plate 31 is always in contact with the fixing plate 1, thereby achieving a stable connection between the fixing needle 2 and the fixing plate 1. Figure 3 , Figure 7 and Figure 8As shown, the first clamping plate 31 is provided with a first clamping hole 312, the first clamping hole 312 is through at both ends of the first clamping plate 31 in the thickness direction, the first clamping hole 312 is provided with an internal thread, the first clamping member 33 is provided with an external thread, the first clamping member 33 is threadedly connected with the first clamping hole 312, and the first clamping member 33 is in contact with the fixing plate 1. In this embodiment, the first clamping plate 31 is limited to rotate around the axis of the first clamping hole 312 by the cooperation between the hole wall of the first threaded hole 311 on the first clamping plate 31 and the fixing needle 2, and the first clamping member 33 is limited to rotate around the axis of the fixing needle 2 by the cooperation between the hole wall of the first clamping hole 312 on the first clamping plate 31 and the first clamping member 33, and the position of the first clamping plate 31 is fixed under the joint action, so as to ensure that the first clamping plate 31 can always keep in contact with the fixing plate 1, and improve the stability of the connection between the fixing needle 2 and the fixing plate 1. In addition, the first clamping member 33 abuts against the fixing plate 1 , and the friction between the first clamping member 33 and the fixing plate 1 further increases the difficulty of rotating the first clamping plate 31 , further ensures that the position of the first clamping plate 31 is fixed, and improves the stability of the connection between the fixing needle 2 and the fixing plate 1 .

[0090] Furthermore, in this embodiment, the number of the first clamping holes 312 and the first clamping members 33 are the same and both are multiple, the multiple first clamping holes 312 are arranged at intervals along the circumference of the first clamping plate 31, the multiple first clamping members 33 and the multiple first clamping holes 312 are arranged one-to-one, and one first clamping member 33 is threadedly connected to one first clamping hole 312. In this embodiment, the rotation of the first clamping plate 31 relative to the fixing needle 2 and the first clamping member 33 is limited by the cooperation of the hole walls of the multiple first clamping holes 312 and the multiple first clamping members 33, and the abutment of the multiple first clamping members 33 and the fixing plate 1 can increase the total friction between the first clamping member 33 and the fixing plate 1, further limiting the rotation of the first clamping plate 31 relative to the fixing needle 2 and the first clamping member 33.

[0091] like Figure 3 As shown, in this embodiment, the number of the first clamping members 33 in a single clamping assembly 3 is specifically four. In other alternative embodiments, the number of the first clamping members 33 in a single clamping assembly 3 can be designed according to actual needs, and is at least one. Fig.10 The diagram shows the situation where the first clamping plate 31 is clamped on the fixing plate 1 by using different numbers of first clamping members 33. Of course, the number of first clamping members 33 in a single clamping assembly 3 is not limited to Fig.10 The quantity indicated.

[0092] Furthermore, if Figure 5As shown, the projection of the first clamping plate 31 on the fixing plate 1 along the thickness direction of the fixing plate 1 is all located on the fixing plate 1, which prevents the first clamping plate 31 from being exposed on the fixing plate 1, and reduces the possibility of the first clamping plate 31 rotating under the action of external force. On the other hand, it can increase the contact area between the first clamping plate 31 and the fixing plate 1, increase the friction between the first clamping plate 31 and the fixing plate 1, increase the area where the first clamping plate 31 can connect with the first clamping member 33, and effectively limit the rotation of the first clamping plate 31 relative to the fixing pin 2 and the first clamping member 33.

[0093] like Figure 4 and Figure 7 As shown, the second clamping member 34 is connected to the second clamping plate 32, and the second clamping member 34 is used to keep the second clamping plate 32 in the second position to keep the second clamping plate 32 in contact with the fixing plate 1, thereby preventing the connection between the fixing pin 2 and the fixing plate 1 from loosening and improving the reliability of the connection. It should be noted that the second position in this embodiment does not refer to a specific position on the fixing pin 2, but refers to the end face of the second clamping plate 32 facing the fixing plate 1 that can be in contact with the end face of the fixing plate 1 on the corresponding side ( Figure 7 The position at which the upper end surface of the middle fixing plate 1) abuts.

[0094] Specifically, since the second clamping plate 32 and the fixing needle 2 are threadedly connected, the second clamping member 34 in this embodiment is to limit the second clamping plate 32 from rotating around the axis of the second threaded hole 321 to limit the axial movement of the second clamping plate 32 along the fixing needle 2, thereby ensuring that the second clamping plate 32 is always in contact with the fixing plate 1, thereby achieving a stable connection between the fixing needle 2 and the fixing plate 1. Figure 4 , Figure 7 and Fig. 9 As shown, the second clamping plate 32 is provided with a second clamping hole 322, and the second clamping hole 322 is through at both ends in the thickness direction of the second clamping plate 32, the second clamping hole 322 is provided with an internal thread, and the second clamping member 34 is provided with an external thread, the second clamping member 34 is threadedly connected with the second clamping hole 322, and the second clamping member 34 abuts against the fixing plate 1. In this embodiment, the second clamping plate 32 is limited to rotate around the axis of the second clamping hole 322 by the cooperation between the hole wall of the second threaded hole 321 on the second clamping plate 32 and the fixing needle 2, and the second clamping member 34 is limited to rotate around the axis of the fixing needle 2 by the cooperation between the hole wall of the second clamping hole 322 on the second clamping plate 32 and the second clamping member 34, and the position of the second clamping plate 32 is fixed under the joint action, so as to ensure that the second clamping plate 32 can always keep in abutment with the fixing plate 1, and improve the stability of the connection between the fixing needle 2 and the fixing plate 1. In addition, the second clamping member 34 abuts against the fixing plate 1 , and the friction between the second clamping member 34 and the fixing plate 1 further increases the difficulty of rotating the second clamping plate 32 , further ensures the fixed position of the second clamping plate 32 , and improves the stability of the connection between the fixing needle 2 and the fixing plate 1 .

[0095] Furthermore, in this embodiment, the number of the second clamping holes 322 and the second clamping members 34 are the same and both are multiple, the multiple second clamping holes 322 are arranged at intervals along the circumference of the second clamping plate 32, the multiple second clamping members 34 and the multiple second clamping holes 322 are arranged one-to-one, and one second clamping member 34 is threadedly connected to one second clamping hole 322. In this embodiment, the rotation of the second clamping plate 32 relative to the fixing needle 2 and the second clamping member 34 is limited by the cooperation of the hole walls of the multiple second clamping holes 322 and the multiple second clamping members 34, and the abutment of the multiple second clamping members 34 and the fixing plate 1 can increase the total friction between the second clamping member 34 and the fixing plate 1, further limiting the rotation of the second clamping plate 32 relative to the fixing needle 2 and the second clamping member 34.

[0096] like Figure 4 As shown, in this embodiment, the number of the second clamping members 34 in a single clamping assembly 3 is specifically four. In other alternative embodiments, the number of the second clamping members 34 can be designed according to actual needs, and is at least one. Fig.11 The diagram shows the situation where the second clamping plate 32 is clamped on the fixing plate 1 by using different numbers of second clamping members 34. Of course, the number of second clamping members 34 in a single clamping assembly 3 is not limited to Fig.11 The quantity indicated.

[0097] The number of the first clamping members 33 and the number of the second clamping members 34 in a single clamping assembly 3 may be the same or different.

[0098] Furthermore, the projections of the second clamping plate 32 on the fixing plate 1 along the thickness direction of the fixing plate 1 are all located on the fixing plate 1, which, on the one hand, prevents the second clamping plate 32 from being exposed on the fixing plate 1, and reduces the possibility of the second clamping plate 32 rotating under the action of external force. On the other hand, it can increase the contact area between the second clamping plate 32 and the fixing plate 1, increase the friction between the second clamping plate 32 and the fixing plate 1, increase the area where the second clamping plate 32 can be connected to the second clamping member 34, and effectively limit the rotation of the second clamping plate 32 relative to the fixing pin 2 and the second clamping member 34.

[0099] In this embodiment, the first clamping member 33 and the second clamping member 34 are both bolt structures. In other alternative implementations, the first clamping member 33 and the second clamping member 34 may also adopt other clamping structures that can achieve the above functions.

[0100] Figure 7 It is shown that the axis of the fixing needle 2 is parallel to the thickness direction of the fixing plate 1. In this state, the end surfaces of the first clamping plate 31 and the second clamping plate 32 facing the fixing plate 1 are completely in contact with the fixing plate 1. In other alternative embodiments, such as Fig.12As shown, when the fixing needle 2 is inserted into the through hole 11 of the fixing plate 1 at an inclined angle relative to the fixing plate 1, the first clamping plate 31 and the second clamping plate 32 only partially abut against the fixing plate 1 at one end surface facing the fixing plate 1 (that is, the axis of the fixing needle 2 is not parallel to the thickness direction of the fixing plate 1), the first clamping piece 33 passes through the first clamping plate 31 to abut against the side surface corresponding to the fixing plate 1, and the second clamping piece 34 passes through the second clamping plate 32 to abut against the side surface corresponding to the fixing plate 1, thereby ensuring the clamping strength and ensuring the stability of the fixing needle 2 fixed on the fixing plate 1.

[0101] In other alternative embodiments, the first clamping plate 31 and the second clamping plate 32 may not abut against the fixing plate 1, but only rely on the first clamping member 33 and the second clamping member 34 to abut against the fixing plate 1 to achieve the fixation of the fixing needle 2 and the fixing plate 1. Specifically, the first clamping member 33 and the second clamping member 34 abut against the two side surfaces of the fixing plate 1 in the thickness direction to limit the movement of the fixing plate 1 in the axial direction of the fixing needle 2, and the friction between the first clamping member 33 and the fixing plate 1 and the friction between the second clamping member 34 and the fixing plate 1 further limit the movement of the fixing plate 1 in the radial direction of the fixing needle 2, thereby achieving the connection between the fixing needle 2 and the fixing plate 1. Since the first clamping member 33 limits the rotation of the first clamping plate 31 around the axis of the fixing needle 2, and the second clamping member 34 limits the rotation of the second clamping plate 32 around the axis of the fixing needle 2, even if the first clamping plate 31 and the second clamping plate 32 are not in contact with the fixing plate 1, the first clamping plate 31 and the second clamping plate 32 can be fixed in the position of the fixing needle 2, and no movement along the axis of the fixing needle 2 will occur.

[0102] In other alternative embodiments, the first clamping plate 31 and the second clamping plate 32 may also be installed on the fixing needle 2 in other ways. For example, a groove extending along the circumference of the fixing needle 2 may be provided on the outer peripheral wall of the fixing needle 2, and the first clamping plate 31 and the second clamping plate 32 are partially accommodated in the groove, and the two side walls of the groove in the axial direction of the fixing needle 2 limit the movement of the first clamping plate 31 and the second clamping plate 32 in the axial direction of the fixing needle 2. In this state, the first clamping member 33 and the second clamping member 34 may not be provided.

[0103] Furthermore, if Figure 1-Figure 4As shown, the number of fixing pins 2 in the orthopedic external fixation device in this embodiment is multiple, and the multiple fixing pins 2 are inserted into the patient's body to connect with the patient's multiple bone segments 4, and the multiple fixing pins 2 are connected to at least two different bone segments 4 to fix the positions of the different bone segments 4. The number of clamping assemblies 3 in the clamping device is also multiple, and the number of clamping assemblies 3 is the same as the number of fixing pins 2 and is arranged one-to-one. The ends of the multiple fixing pins 2 exposed outside the patient's body are connected to the fixing plate 1 through the corresponding clamping assemblies 3. The fixing plate 1 provides support force to the patient's multiple bone segments 4 by connecting with the multiple fixing pins 2 to ensure that each bone segment 4 remains in the correct position.

[0104] Specifically, Figure 2 and Figure 6 As shown, the fixing plate 1 is provided with a plurality of through holes 11, and the plurality of through holes 11 are arranged at intervals along the length direction of the fixing plate 1 ( Figure 2 The plurality of through holes 11 are all in the thickness direction of the fixing plate 1 ( Figure 2 The two ends of the fixing pin 2 in the Y direction of the fixing plate 1 are connected, and the fixing pin 2 passes through the fixing plate 1 in the thickness direction of the fixing plate 1 through the corresponding through hole 11. In this embodiment, the through hole 11, the fixing pin 2 and the clamping assembly 3 are arranged in a one-to-one correspondence, one through hole 11 is only for one fixing pin 2 to pass through, and one clamping assembly 3 is used to fix one fixing pin 2 on the fixing plate 1.

[0105] exist Figure 2 and Figure 5 In the orthopedic external fixation device shown, the axes of the multiple through holes 11 on the fixation plate 1 are parallel, but in other alternative embodiments, the axes of the multiple through holes 11 on the fixation plate 1 may not be parallel to each other, or the axes of some of the through holes 11 may be parallel while the axes of some of the through holes 11 may not be parallel, which can be adjusted specifically according to the angle at which the fixation pin 2 is fixed on the bone 4.

[0106] Furthermore, the size of the fixing plate 1, the number of through holes 11 on the fixing plate 1, and the distance between two adjacent through holes 11 can be selected according to the patient's condition.

[0107] Each fixing pin 2 is connected to the fixing plate 1 through a corresponding clamping assembly 3. The positions of the first clamping plate 31 and the second clamping plate 32 can be adjusted in real time following the angle of the corresponding fixing pin 2 without being affected by other fixing pins 2. Multiple fixing pins 2 can pass through the fixing plate 1 at different angles, thereby improving the operability of connecting multiple fixing pins 2 to the same fixing plate 1.

[0108] The number of first clamping members 33 in different clamping assemblies 3 may be the same or different, and the number of second clamping members 34 in different clamping assemblies 3 may be the same or different.

[0109] The following briefly describes the method for using the orthopedic external fixation device based on the specific structure of the orthopedic external fixation device mentioned above.

[0110] The doctor fixes the fixing pin 2 on the patient's bone 4. After the fixing pin 2 is connected to the patient's bone 4, the end of the fixing pin 2 away from the bone 4 passes through the second splint 32, the fixing plate 1 and the first splint 31 in sequence.

[0111] The second clamping plate 32 and the fixing needle 2 are connected, and the second clamping plate 32 is controlled to abut against the second side surface in the thickness direction of the fixing plate 1. Specifically, the second clamping plate 32 and the fixing needle 2 are connected by threading the second threaded hole 321 of the second clamping plate 32 with the second threaded section of the fixing needle 2. The second clamping plate 32 is controlled to rotate around the axis of the fixing needle 2 to adjust the position of the second clamping plate 32 in the axial direction of the fixing needle 2, thereby controlling the second clamping plate 32 to abut against the second side surface in the thickness direction of the fixing plate 1 ( Figure 5 The threaded structure can limit the axial movement of the second clamping plate 32 on the fixing needle 2 without rotating the second clamping plate 32, thereby achieving the preliminary fixation of the second clamping plate 32 on the fixing needle 2.

[0112] The first clamping plate 31 and the fixing plate 1 are connected, and the first clamping plate 31 is controlled to abut against the first side surface in the thickness direction of the fixing plate 1. Specifically, the first clamping plate 31 and the fixing needle 2 are connected by threading the first threaded hole 311 of the first clamping plate 31 with the first threaded section of the fixing needle 2. The first clamping plate 31 is controlled to rotate around the axis of the fixing needle 2 to adjust the position of the first clamping plate 31 in the axial direction of the fixing needle 2, thereby controlling the first clamping plate 31 to abut against the first side surface in the thickness direction of the fixing plate 1 ( Figure 5 The threaded structure can limit the axial movement of the first clamping plate 31 on the fixing needle 2 without rotating the first clamping plate 31, thereby achieving the initial fixation of the first clamping plate 31 on the fixing needle 2.

[0113] There is no requirement for the order of the step of controlling the second clamping plate 32 to abut against the fixing plate 1 and the step of controlling the first clamping plate 31 to abut against the fixing plate 1 .

[0114] After the steps of controlling the second clamping plate 32 to abut against the second side surface in the thickness direction of the fixing plate 1 and controlling the first clamping plate 31 to abut against the first side surface in the thickness direction of the fixing plate 1:

[0115] The second clamping member 34 is connected to the second clamping plate 32, and the second clamping member 34 is used to keep the second clamping plate 32 always in contact with the second side surface in the thickness direction of the fixing plate 1. Specifically, the second clamping member 34 is connected to the second clamping hole 322 on the second clamping plate 32 to achieve connection with the second clamping plate 32, and the second clamping member 34 is controlled to be tightened in the direction of the second side surface in the thickness direction of the fixing plate 1 until the second clamping member 34 is initially in contact with the second side surface in the thickness direction of the fixing plate 1. The second clamping member 34 is used to keep the second clamping plate 32 in contact with the fixing plate 1 to prevent the connection between the fixing pin 2 and the fixing plate 1 from being loosened, thereby improving the reliability of the connection. In this embodiment, the second clamping plate 32 is limited to rotate around the axis of the second clamping hole 322 by the cooperation between the hole wall of the second threaded hole 321 on the second clamping plate 32 and the fixing needle 2, and the second clamping member 34 is also limited to rotate around the axis of the fixing needle 2 by the cooperation between the hole wall of the second clamping hole 322 on the second clamping plate 32 and the second clamping member 34. Under the joint action, the position of the second clamping plate 32 is fixed, so that the second clamping plate 32 can always be kept in contact with the fixing plate 1, and the stability of the connection between the fixing needle 2 and the fixing plate 1 is improved. The second clamping member 34 is in contact with the fixing plate 1, and the friction between the second clamping member 34 and the fixing plate 1 further increases the difficulty of the second clamping plate 32 to rotate, further ensuring the position of the second clamping plate 32 and improving the stability of the connection between the fixing needle 2 and the fixing plate 1.

[0116] The first clamping member 33 and the first clamping plate 31 are connected, and the first clamping member 33 is used to keep the first clamping plate 31 always in contact with the first side surface in the thickness direction of the fixing plate 1. Specifically, the first clamping member 33 is connected to the first clamping hole 312 on the first clamping plate 31 to achieve connection with the first clamping plate 31, and the first clamping member 33 is controlled to be tightened in the direction of the first side surface in the thickness direction of the fixing plate 1 until the first clamping member 33 is initially in contact with the first side surface in the thickness direction of the fixing plate 1. The first clamping member 33 is used to keep the first clamping plate 31 in contact with the fixing plate 1 to prevent the connection between the fixing pin 2 and the fixing plate 1 from being loosened, thereby improving the reliability of the connection. In this embodiment, the first clamping plate 31 is limited to rotate around the axis of the first clamping hole 312 by the cooperation between the hole wall of the first threaded hole 311 on the first clamping plate 31 and the fixing needle 2, and the first clamping member 33 is also limited to rotate around the axis of the fixing needle 2 by the cooperation between the hole wall of the first clamping hole 312 on the first clamping plate 31, and the position of the first clamping plate 31 is fixed under the joint action, so as to ensure that the first clamping plate 31 can always maintain contact with the fixing plate 1, and improve the stability of the connection between the fixing needle 2 and the fixing plate 1. The first clamping member 33 is in contact with the fixing plate 1, and the friction between the first clamping member 33 and the fixing plate 1 further increases the difficulty of the first clamping plate 31 to rotate, further ensures the position of the first clamping plate 31 is fixed, and improves the stability of the connection between the fixing needle 2 and the fixing plate 1.

[0117] In this embodiment, the first clamping plate 31 and the second clamping plate 32 are fixed on the fixing needle 2, and the fixing plate 1 is clamped between the first clamping plate 31 and the second clamping plate 32. The first clamping plate 31 and the second clamping plate 32 abut against the two side surfaces in the thickness direction of the fixing plate 1 to limit the axial movement of the fixing plate 1 on the fixing needle 2, and the friction force between the first clamping plate 31 and the fixing plate 1 and the friction force between the second clamping plate 32 and the fixing plate 1 can further limit the radial movement of the fixing plate 1 on the fixing needle 2, thereby realizing an indirect connection between the fixing needle 2 and the fixing plate 1.

[0118] During the entire connection process, the fixing pin 2 may not have any direct contact with the fixing plate 1, so there is no need to control the axis of the fixing pin 2 and the axis of the through hole 11 of the fixing plate 1 to be completely aligned as in the prior art. The fixing pin 2 can pass through the fixing plate 1 at various angles, thereby reducing the positioning accuracy requirements of the fixing pin 2, reducing the difficulty of the doctor's operation, and improving the versatility of the orthopedic external fixation device.

[0119] Further, after the steps of the second clamping member 34 abutting against the second side surface in the thickness direction of the fixing plate 1 and the first clamping member 33 abutting against the first side surface in the thickness direction of the fixing plate 1:

[0120] Continue to control the second clamping member 34 to be tightened in the direction of the second side surface in the thickness direction of the fixing plate 1, and continue to control the first clamping member 33 to be tightened in the direction of the first side surface in the thickness direction of the fixing plate 1. In this embodiment, the first clamping member 33 and the second clamping member 34 are tightened after the first clamping plate 31 and the second clamping plate 32 are initially clamped. On the one hand, it prevents the fixing plate 1 from moving due to excessive pressure on one side. On the other hand, continuing to tighten the first clamping member 33 and the second clamping member 34 can increase the friction between the clamping member and the fixing plate 1, further limiting the rotation of the clamping plate relative to the fixing needle 2 and the clamping member.

[0121] Among them, the tightening operation of the first clamping member 33 and the tightening operation of the second clamping member 34 can be performed alternately. For example, the first clamping member 33 is controlled to rotate a few circles relative to the first clamping plate 31, and then the second clamping member 34 is controlled to rotate a few circles relative to the second clamping plate 32, and then reciprocating operations are performed to prevent the first clamping member 33 and the second clamping member 34 from exerting too much force on the fixed plate 1, thereby preventing the fixed plate 1 from moving due to excessive unilateral pressure.

[0122] After one fixing pin 2 is fixedly connected to the fixing plate 1 , other fixing pins 2 may be connected to the fixing plate 1 until all the fixing pins 2 are fixed to the fixing plate 1 .

[0123] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings of the devices or components, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0124] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A clamping device for an orthopedic external fixation device, used for fixed connection with a fixing pin in the orthopedic external fixation device, the clamping device for the orthopedic external fixation device comprising a fixing plate and a clamping assembly; It is characterized in that The fixing plate is provided with a through hole for the fixing needle to pass through, the through hole penetrates through both ends of the fixing plate in the thickness direction, and the diameter of the through hole is larger than the diameter of the fixing needle that can pass through it; The clamping assembly includes a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are respectively arranged on both sides of the fixing plate in the thickness direction, and are both used to be installed on the fixing needle, and an end surface of the first clamping plate facing the fixing plate and an end surface of the second clamping plate facing the fixing plate are respectively abutted against the end surfaces on the corresponding sides of the fixing plate.

2. The clamping device for an orthopedic external fixation device according to claim 1, characterized in that: The clamping assembly also includes a first clamping member and a second clamping member; The first clamping member is connected to the first clamping plate, and is used to keep the first clamping plate in the first position; when the first clamping plate is in the first position, an end surface of the first clamping plate facing the fixing plate abuts against an end surface of the fixing plate on a corresponding side; The second clamping member is connected to the second clamping plate and is used to keep the second clamping plate in the second position; when the second clamping plate is in the second position, an end surface of the second clamping plate facing the fixing plate abuts against an end surface of the fixing plate on a corresponding side.

3. The clamping device for an orthopedic external fixation device according to claim 2, characterized in that: The fixing needle passes through the first clamping plate and the second clamping plate, and the fixing needle includes a first external thread segment and a second external thread segment; The first clamping plate comprises a first threaded hole, the first threaded hole is threadedly connected to the first external thread section, and the first clamping member is used to limit the first clamping plate from rotating around the axis of the first threaded hole; The second clamping plate comprises a second threaded hole, the second threaded hole is threadedly connected to the second threaded section, and the second clamping member is used to limit the second clamping plate from rotating around the axis of the second threaded hole.

4. The clamping device for an orthopedic external fixation device according to claim 2, characterized in that: The first clamping plate is provided with a first clamping hole, the first clamping hole is through at both ends of the first clamping plate in the thickness direction, the first clamping hole is provided with an internal thread, the first clamping piece is provided with an external thread, the first clamping piece is threadedly connected to the first clamping hole, and the first clamping piece is in contact with the fixing plate; The second clamping plate is provided with a second clamping hole, the second clamping hole is through at both ends of the second clamping plate in the thickness direction, the second clamping hole is provided with an internal thread, the second clamping piece is provided with an external thread, the second clamping piece is threadedly connected to the second clamping hole, and the second clamping piece abuts against the fixing plate.

5. The clamping device for an orthopedic external fixation device according to claim 4, characterized in that: The number of the first clamping holes and the number of the first clamping members are the same and both are multiple, the multiple first clamping holes are arranged at intervals along the circumference of the first clamping plate, and the multiple first clamping members and the multiple first clamping holes are arranged in one-to-one correspondence; And / or, the number of the second clamping holes and the number of the second clamping members are the same and both are multiple, the multiple second clamping holes are arranged at intervals along the circumference of the second clamping plate, and the multiple second clamping members and the multiple second clamping holes are arranged in a one-to-one correspondence.

6. The clamping device for an orthopedic external fixation device according to claim 5, characterized in that: The projections of the first clamping plate on the fixing plate along the thickness direction of the fixing plate are all located on the fixing plate; And / or, the projections of the second clamping plate on the fixing plate along the thickness direction of the fixing plate are all located on the fixing plate.

7. The clamping device for an orthopedic external fixation device according to any one of claims 1 to 6, characterized in that: The through hole is a light hole.

8. A fixing needle for an orthopedic external fixation device, characterized in that: The fixing needle for the orthopedic external fixation device is fixed by the clamping device for the orthopedic external fixation device as described in any one of claims 1-7.

9. The fixing needle for an orthopedic external fixation device according to claim 8, characterized in that: The fixing needle for orthopedic external fixation device meets one or more of the following conditions: a. The thread of the first external thread section of the fixing needle and the thread of the second external thread section of the fixing needle are continuous; or, the fixing needle further includes a first non-threaded section, and the first non-threaded section is located between the first external thread section of the fixing needle and the second external thread section of the fixing needle; b. The fixing needle further comprises a third external thread segment, and the third external thread segment is arranged on a side of the second external thread segment of the fixing needle away from the second external thread segment of the fixing needle; The threads of the second external thread segment are continuous with the threads of the third external thread segment; or, the fixing needle further includes a second non-thread segment, and the second non-thread segment is located between the second external thread segment and the third external thread segment.

10. An orthopedic external fixation device, characterized in that: The orthopedic external fixation device comprises the clamping device for an orthopedic external fixation device according to any one of claims 1 to 7 and the fixing needle for an orthopedic external fixation device according to claim 8 or 9, and the fixing needle passes through the through hole on the fixing plate.

Images