Bone needle fixing type tracer

Abstract

The invention discloses a spicule fixing type tracer. The spicule fixing type tracer comprises a clamping mechanism and a tracing mechanism. The clamping mechanism comprises a clamp body, a movable clamping plate and a clamping component, the clamp body is provided with a plurality of clamping grooves and clamping holes, the movable clamping plate and the clamping grooves are both used for clamping a first bone needle, the clamping component is used for clamping a second bone needle, the clamping holes are used for clamping and guiding the second bone needle, and the multiple clamping grooves and the multiple clamping holes are sequentially formed in the preset direction; the movable clamping plate and the multiple clamping grooves are oppositely arranged, the movable clamping plate is rotatably arranged on the clamp body so as to be close to or away from the clamping grooves, the clamping component is arranged on the clamp body, the clamping component and the clamping hole are correspondingly arranged, and the clamping component is movably arranged on the clamp body so as to be close to or away from the clamping hole; the tracing mechanism is arranged on the clamp body. The spicule fixing type tracer can be preliminarily installed on the first spicule and position and guide the second spicule, so that the difficulty of driving the two spicules into proper positions is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a bone needle fixed tracer. Background Art

[0002] As an important part of the navigation and positioning system for orthopedic surgery, the tracer is used to indicate the spatial position of the patient during orthopedic surgery. The firm connection between the tracer and the patient and the stable relative position are important foundations for ensuring surgical accuracy. The current bone needle fixed tracer requires at least two bone needles to be inserted into the bone tissue through soft tissues such as skin and muscle, and the tracer is installed on the bone needles to achieve fixation.

[0003] However, it is difficult to drive both bone needles into the appropriate position, which causes the position of the bone needles to deviate easily. When the bone needles have a large deviation, the bone needles need to be removed and inserted repeatedly, which prolongs the operation time and aggravates the patient's trauma. Summary of the invention

[0004] The purpose of the present application is to at least solve the problem that it is difficult to drive both bone needles into the appropriate position when driving two bone needles. This purpose is achieved by: The present application proposes a bone needle fixed type tracer, including a clamping mechanism and a tracing mechanism. The clamping mechanism includes a clamp body, a movable splint and a clamping member, the clamp body is provided with a plurality of clamping grooves and clamping holes, the movable splint and the clamping groove are both used to clamp the first bone needle, the clamping member is used to clamp the second bone needle, the clamping hole is used to clamp and guide the second bone needle, the plurality of clamping grooves and the clamping holes are arranged in sequence along a preset direction, the movable splint is arranged relative to the plurality of clamping grooves, the movable splint is rotatably arranged on the clamp body so as to be able to approach or move away from the clamping groove, the clamping member is arranged on the clamp body, the clamping member is arranged corresponding to the clamping hole, and the clamping member is movably arranged on the clamp body so as to be able to approach or move away from the clamping hole; the tracing mechanism is arranged on the clamp body, and the tracing mechanism is used to feedback position information.

[0005] The bone needle fixed tracer of the present application has a plurality of clamping grooves arranged in sequence along a preset direction. During installation, the first bone needle can be inserted into a flexible clamping groove according to the specific position of the bone surface, so that the clamping mechanism can adapt to the differences of various bone surfaces and improve the compatibility of the clamping mechanism with the first bone needle. After the first bone needle is driven in and the clamping mechanism is preliminarily installed, the position of the clamp body is adjusted to make the clamping hole at a suitable position, and then the second bone needle is inserted, so that the position of the second bone needle can be accurately adjusted and positioned. Moreover, the guiding effect of the clamping hole helps to drive the second bone needle more accurately, reducing the deviation caused by the inaccurate insertion direction of the bone needle, thereby reducing the difficulty of driving both bone needles into the appropriate position.

[0006] In some embodiments, the clamping member includes a clamping member and a locking bolt, the locking bolt includes a locking knob and a locking screw connected to each other, the locking knob is located on the side of the clamp body away from the clamping hole and abuts against the clamp body, the locking screw passes through the clamp body, the clamping hole is formed with an opening, and part of the clamping member extends into the clamping hole through the opening, and the clamping member is movably threadedly connected to the locking screw so as to be able to move in a direction close to the clamping hole or in a direction away from the clamping hole.

[0007] In some embodiments, the locking bolt also includes a limiting boss provided on the locking screw, and the clamping mechanism also includes a limiting shaft, which is provided in the clamp body and abuts against the limiting boss, and the limiting shaft is located between the limiting boss and the locking knob.

[0008] In some embodiments, the movable clamping plate is provided with a receiving groove, and the clamping member is located between the movable clamping plate and the clamp body and in the receiving groove.

[0009] In some embodiments, the clamping mechanism also includes an adjusting knob, an adjusting screw and a clamping plate shaft, the adjusting knob, the adjusting screw and the clamping plate shaft are all located on the side of the clamping groove away from the clamping hole, the adjusting knob is located on the side of the clamp body away from the movable clamp plate, the clamping plate shaft is arranged on the movable clamp plate, the adjusting screw is threadedly connected to the clamp body, one end of the adjusting screw is connected to the adjusting knob, and the clamping plate shaft is rotatably passed through the other end of the adjusting screw.

[0010] In some embodiments, the tracing mechanism includes an adjustment component and a tracing component, and the adjustment component includes: a vertical pole, a mounting member, and a locking member. The vertical rod comprises a rod body and a mounting portion, one end of the rod body is connected to the clamp body, the other end of the rod body is connected to the mounting portion, the mounting portion defines a rotation groove extending along the circumferential direction of the mounting portion, a rotation cavity connected to the rotation groove is defined in the mounting portion, and a first tooth portion is provided on the outer circumferential surface of the mounting portion; the mounting member is connected to the mounting portion in a manner that it can rotate along the circumferential direction of the mounting portion, the mounting member is provided with a second tooth portion engaged with the first tooth portion, the tracing assembly is connected to the mounting member, and the tracing assembly is used to feedback position information; a locking member is passed through the rotation groove and installed in the rotation cavity, the locking member is passed through the mounting member and abuts against the mounting member, the locking member has a locking state and an unlocking state relative to the mounting member, when the locking member is in the locking state, the first tooth portion and the second tooth portion are used to limit the rotation of the mounting member, and when the locking member is in the unlocking state, the first tooth portion and the second tooth portion are configured to be able to jump teeth when subjected to force, so that the mounting member rotates relative to the mounting portion.

[0011] In some embodiments, the mounting member includes a rotating mounting member and a mounting rod, the second tooth portion is provided on one side of the rotating mounting member, and the third tooth portion is provided on the other side of the rotating mounting member, the mounting rod includes a connecting rod connected to the tracer assembly and a connecting portion connected to the connecting rod, the connecting portion is provided with a fourth tooth portion engaged with the third tooth portion, when the locking member is in the locking state, the third tooth portion and the fourth tooth portion are used to limit the rotation of the connecting portion, and when the locking member is in the unlocking state, the third tooth portion and the fourth tooth portion are configured to be able to jump teeth when subjected to force, so that the connecting portion rotates relative to the rotating mounting member along the circumferential direction of the connecting portion.

[0012] In some embodiments, the locking member includes: a locking rod and a second locking knob. A portion of the locking rod is inserted through the rotating mounting member and the connecting portion, and another portion of the locking rod is inserted through the rotating groove and installed in the rotating cavity in a manner that allows rotation along the circumferential direction of the mounting portion, the second locking knob is located on a side of the connecting portion away from the rotating mounting member and abuts against the connecting portion, the second locking knob is connected to the locking rod in a manner that allows movement along the length direction of the locking rod, and the second locking knob has the locking state and the unlocking state.

[0013] In some embodiments, the tracer assembly includes a tracer ball, a tracer plate, a buckle and a knob. The tracer ball is mounted on the tracer plate, the tracer ball is used to feedback position information, the tracer plate is provided with a mounting hole, the mounting rod also includes a clamping portion connected to the connecting rod, the clamping portion is located on the side of the connecting rod away from the connecting portion, the clamping portion defines a slot, the buckle includes a buckle body and a claw connected to each other, the buckle body is provided in the mounting hole, the claw is provided in the slot, the knob is rotatably provided in the mounting hole, the knob has a clamping position and a separation position relative to the buckle, the knob located at the clamping position is connected to the claw and causes the claw to elastically deform so that the claw is clamped in the slot, and the knob located at the separation position is separated from the claw so that the claw is released from the clamping.

[0014] In some embodiments, the knob includes a button body, a positioning boss and a driving portion, the button body is connected to the positioning boss, a first positioning boss and a second positioning boss are provided in the mounting hole, the positioning boss is located between the first positioning boss and the second positioning boss, when the knob is in the clamping position, the positioning boss abuts against the first positioning boss, when the knob is in the separation position, the positioning boss abuts against the second positioning boss; the driving portion is connected to the button body, the button body is provided with a through hole, the driving portion is penetrated through the through hole, and is located on the inner side of the claw in the inner and outer directions of the button body, when the knob is in the clamping position, the driving portion is connected to the claw, and presses the claw outward in the inner and outer directions of the button body, when the knob is in the separation position, the driving portion is separated from the claw. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. In addition, the same reference numerals are used throughout the accompanying drawings to represent the same components. Among them: Figure 1 A schematic diagram of a bone needle fixed tracer according to an embodiment of the present application; Figure 2 It is a partial structural schematic diagram of a bone needle fixed tracer according to an embodiment of the present application; Figure 3 A schematic diagram of a clamp body according to an embodiment of the present application; Figure 4 A schematic diagram of a movable splint according to an embodiment of the present application; Figure 5 A schematic diagram of a clamping member according to an embodiment of the present application; Figure 6A schematic diagram of a locking bolt according to an embodiment of the present application; Figure 7 A schematic diagram of an adjustment knob according to an embodiment of the present application; Figure 8 A schematic diagram of an adjusting screw according to an embodiment of the present application; Fig. 9 A schematic diagram of an adjustment component according to an embodiment of the present application; Fig.10 A schematic diagram of a pole according to an embodiment of the present application; Fig.11 A schematic diagram of a rotating body according to an embodiment of the present application; Fig.12 A schematic diagram of a locking rod according to an embodiment of the present application; Fig.13 A schematic diagram of a rotating mounting member according to an embodiment of the present application; Fig.14 A schematic diagram of a mounting rod according to an embodiment of the present application; Fig.15 A schematic diagram of a tracer assembly according to an embodiment of the present application; Fig.16 A schematic diagram of a tracer plate according to an embodiment of the present application; Fig.17 A schematic diagram of a buckle according to an embodiment of the present application; Fig.18 Schematic diagram of a knob according to an embodiment of the present application.

[0016] The reference numerals in the accompanying drawings represent the following: 100. Bone needle fixed tracer; 1. Clamping mechanism; 11. Clamp body; 111. Clamping groove; 112. Clamping hole; 12. Movable clamping plate; 121. Accommodating groove; 13. Clamping member; 131. Clamping piece; 1311. Wedge surface; 132. Locking bolt; 1321. Locking knob; 1322. Locking screw; 1323. Limiting boss; 14. Limiting shaft; 15. Adjusting knob; 16. Adjusting screw; 161. Articulated portion; 17. Clamping plate rotating shaft; 2. Tracer mechanism; 21. Adjustment assembly; 211. Vertical pole; 212. Rod body; 213. Mounting part; 2131. Rotation slot; 2132. Rotation chamber; 2133. First tooth portion; 214. Mounting member; 2141. Rotation mounting member; 2142. Second tooth portion; 2143. Third tooth portion; 2144. Mounting rod; 2145. Clamping part; 2146. Clamping slot; 2147. Connecting rod; 2148. Connecting part; 2149. Fourth tooth portion; 215. Locking member; 2151. Locking rod; 2152. Second locking knob; 216. Spring; 217. Rotating body; 2171. Mounting slot; 22, tracer assembly; 221, tracer ball; 222, tracer plate; 2221, mounting hole; 2222, first positioning platform; 2223, second positioning platform; 2224, positioning groove; 223, buckle; 2231, buckle body; 2233, through hole; 2232, claw; 224, knob; 2241, knob body; 2242, positioning boss; 2243, driving part; 225, snap ring; a. Preset direction. DETAILED DESCRIPTION

[0017] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0018] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0019] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

[0020] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure rotates, the element described as "below other elements or features" or "below other elements or features" will then be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0021] In the description of the application, the orientation or position relationship indicated by technical terms such as "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "circumferential", "height direction", "first direction", "second direction", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed, operated or used in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0022] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] As an important part of the orthopedic surgical navigation and positioning system, the tracer is used to indicate the patient's spatial position during orthopedic surgery. In the surgical navigation system, the optical tracking device emits light, and the tracer ball in the tracer can reflect the light. The optical tracking device captures the light reflected by the tracer ball and calculates the three-dimensional coordinate position of the tracer ball in space, thereby determining the position of the surgical site or instrument connected to it. During the operation, the tracer ball moves with the movement of the bones or surgical instruments. The optical tracking device can monitor the position changes of the tracer ball in real time, thereby providing doctors with real-time movement trajectories of the surgical site or instrument, allowing doctors to accurately grasp the progress of the operation.

[0024] It can be seen that a firm connection between the tracer and the patient and a stable relative position are important foundations for ensuring surgical accuracy. When the connection between the tracer and the patient is loose, it is easy for the position information tracked by the optical tracking device to deviate, thereby reducing surgical accuracy.

[0025] The current bone needle-fixed tracer requires at least two bone needles to be inserted through soft tissues such as skin and muscle into bone tissue, and the tracer is installed on the bone needles to achieve fixation.

[0026] However, it is difficult to drive both bone needles into the appropriate position, which causes the position of the bone needles to deviate easily, making it difficult to install the tracer. When the bone needles have a large deviation, the bone needles need to be repeatedly removed and inserted, which prolongs the operation time and aggravates the patient's trauma.

[0027] In order to at least solve the problem that it is difficult to drive both bone needles into the appropriate positions, the embodiment of the present application proposes a bone needle fixed tracer 100, which can be initially installed on the first bone needle and position and guide the second bone needle, thereby reducing the difficulty of driving both bone needles into the appropriate positions.

[0028] The bone needle fixed tracer 100 of an embodiment of the present application is described below with reference to the accompanying drawings.

[0029] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the bone needle fixed tracer 100 of the embodiment of the present application includes a clamping mechanism 1 and a tracing mechanism 2. The clamping mechanism 1 includes a clamp body 11, a movable splint 12 and a clamping member 13. The clamp body 11 is provided with a plurality of clamping grooves 111 and clamping holes 112. The movable splint 12 and the clamping grooves 111 are both used to clamp the first bone needle. The clamping member 13 is used to clamp the second bone needle. The clamping hole 112 is used to clamp and guide the second bone needle. The plurality of clamping grooves 111 and the clamping holes 112 are arranged in sequence along a preset direction a. The movable splint 12 is arranged opposite to the plurality of clamping grooves 111. The movable splint 12 is rotatably arranged on the clamp body 11 so as to be able to approach or move away from the clamping grooves 111. The clamping member 13 is arranged on the clamp body 11. The clamping member 13 is arranged corresponding to the clamping hole 112. The clamping member 13 is movably arranged on the clamp body 11 so as to be able to approach or move away from the clamping hole 112. The tracing mechanism 2 is arranged on the clamp body 11. The tracing mechanism 2 is used to feedback position information.

[0030] As an example, the preset direction a is as follows Figure 3 As shown by the arrow at a in the figure. As a preferred example, the preset direction a is the length direction of the clamp body 11.

[0031] When installing the bone needle fixed tracer 100 of the embodiment of the present application, first drive in the first bone needle, determine the appropriate clamping groove 111 according to the position of the bone surface, insert the first bone needle into the appropriate clamping groove 111, and keep a small gap between the clamping groove 111 and the movable splint 12, so that under the action of the clamping groove 111 and the movable splint 12, the clamping mechanism 1 can be initially limited by the first bone needle, thereby achieving the preliminary installation of the clamping mechanism 1. Adjust the position of the clamp body 11 so that the clamping hole 112 moves to a suitable position. Insert the second bone needle into the clamping hole 112, and drive the second bone needle through the guiding effect of the clamping hole 112. Drive the movable splint 12 to rotate so that the movable splint 12 and the clamping groove 111 clamp the first bone needle, and drive the clamping member 13 to move so that the clamping member 13 and the clamping hole 112 clamp the second bone needle.

[0032] By means of multiple clamping grooves 111 arranged in sequence along the preset direction a, during installation, the appropriate clamping groove 111 can be flexibly selected to insert the first bone needle according to the specific position of the bone surface, so that the clamping mechanism 1 can adapt to the differences in various bone surfaces and improve the adaptability of the clamping mechanism 1 and the first bone needle.

[0033] After the first bone needle is driven in and the clamping mechanism 1 is preliminarily installed, the position of the clamp body 11 is adjusted so that the clamping hole 112 is at a suitable position, and then the second bone needle is inserted, thereby enabling the position of the second bone needle to be accurately adjusted and positioned. Moreover, the guiding effect of the clamping hole 112 helps to drive the second bone needle more accurately, reducing the deviation caused by inaccurate bone needle insertion direction, thereby reducing the difficulty of driving both bone needles into the appropriate positions.

[0034] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments, the clamping member 13 includes a clamping member 131 and a locking bolt 132, and the locking bolt 132 includes a locking knob 1321 and a locking screw 1322 that are connected to each other. The locking knob 1321 is located on the side of the clamp body 11 away from the clamping hole 112 and abuts against the clamp body 11. The locking screw 1322 is penetrated by the clamp body 11. The clamping hole 112 is formed with an opening, and part of the clamping member 131 extends into the clamping hole 112 through the opening. The clamping member 131 is movably threadedly connected to the locking screw 1322 so as to be able to move in a direction close to the clamping hole 112 or in a direction away from the clamping hole 112.

[0035] The clamping member 131 partially extends into the clamping hole 112 through the opening, and cooperates with the clamping hole 112 to clamp the second bone needle, thereby forming a stable clamping structure.

[0036] The clamping member 131 can be controlled by rotating the locking knob 1321, thereby completing the clamping or releasing operation of the second bone needle. The clamping member 13 of this embodiment is simple and direct to operate, which can improve work efficiency.

[0037] The clamping force can be evenly distributed between the clamp body 11, the clamping member 131 and the bone needle by the locking bolt 132. The locking knob 1321 abuts against the clamp body 11 to transmit the clamping force to the clamp body 11, thereby enhancing the clamping stability of the clamping mechanism 1 of this embodiment.

[0038] In the absence of external force to loosen it, the locking knob 1321 will not loosen by itself. Therefore, the clamping stability of the clamping member 131 can be improved through the threaded connection, thereby further enhancing the clamping stability of the clamping mechanism 1 of this embodiment.

[0039] like Figure 5As shown, in some specific embodiments, the clamping member 131 has a wedge surface 1311, and the wedge surface 1311 is used to abut against the second bone needle. When the wedge surface 1311 abuts against the second bone needle, it can better fit the surface of the second bone needle, so that there is a larger contact area between the wedge surface 1311 and the second bone needle, so that the clamping effect between the clamping member 131 and the second bone needle is more firm, thereby further enhancing the clamping stability of the clamping mechanism 1 of this embodiment.

[0040] Combination Figure 2 and Figure 6 As shown, in some embodiments, the locking bolt 132 also includes a limiting boss 1323 provided on the locking screw 1322, and the clamping mechanism 1 also includes a limiting shaft 14, which is provided in the clamp body 11 and abuts against the limiting boss 1323, and the limiting shaft 14 is located between the limiting boss 1323 and the locking knob 1321.

[0041] The limiting shaft 14 is disposed in the clamp body 11 and abuts against the limiting boss 1323. The limiting shaft 14 is located between the limiting boss 1323 and the locking knob 1321. Thus, the limiting shaft 14 can effectively prevent the locking bolt 132 from being pulled out of the clamp body 11, thereby ensuring the structural integrity of the clamping member 13. Thus, the structural stability and clamping reliability of the clamping mechanism 1 are ensured.

[0042] Combination Figure 2 and Figure 4 As shown, in some embodiments, the movable clamping plate 12 is provided with a receiving groove 121 , and the clamping member 131 is located between the movable clamping plate 12 and the clamp body 11 and in the receiving groove 121 .

[0043] By arranging the clamping member 131 in the receiving groove 121, the clamping member 131 avoids occupying extra space outside the clamp body 11, making the structural layout of the clamping mechanism 1 more compact. In other words, the clamping member 131 is located in the receiving groove 121, making the internal space of the clamping mechanism 1 more efficiently utilized.

[0044] The groove wall of the accommodating groove 121 has a limiting effect on the clamping member 31. The accommodating groove 121 can prevent the clamping member 131 from accidentally rotating during operation, thereby increasing the clamping reliability of the clamping member 131 and further ensuring the structural stability and clamping reliability of the clamping mechanism 1.

[0045] Combination Figure 2 , Figure 7 and Figure 8As shown, in some embodiments, the clamping mechanism 1 also includes an adjusting knob 15, an adjusting screw 16 and a clamping plate shaft 17. The adjusting knob 15, the adjusting screw 16 and the clamping plate shaft 17 are all located on the side of the clamping groove 111 away from the clamping hole 112. The adjusting knob 15 is located on the side of the clamp body 11 away from the movable clamp plate 12. The clamping plate shaft 17 is provided on the movable clamp plate 12. The adjusting screw 16 is threadedly connected to the clamp body 11. One end of the adjusting screw 16 is connected to the adjusting knob 15. The clamping plate shaft 17 is rotatably passed through the other end of the adjusting screw 16.

[0046] By rotating the adjusting knob 15, the connected adjusting screw 16 can be driven to rotate. Since the adjusting screw 16 is threadedly connected to the clamp body 11, the rotation of the adjusting screw 16 will be converted into the linear motion of the adjusting screw 16 in the axial direction. The splint shaft 17 is rotatably arranged at the other end of the adjusting screw 16, and the splint shaft 17 is arranged on the movable splint 12. Therefore, the linear motion of the adjusting screw 16 can be transmitted to the movable splint 12, thereby controlling the movable splint 12 to approach or move away from the clamping groove 111, so as to adjust the clamping force and position of the first bone needle. Therefore, the position of the splint shaft 17 can be simply and conveniently controlled by adjusting the knob 15.

[0047] In the absence of external force to loosen the screw, the adjusting screw 16 will not loosen by itself. Therefore, the clamping stability of the movable clamping plate 12 can be improved through the threaded connection, thereby further enhancing the clamping stability of the clamping mechanism 1 of this embodiment.

[0048] like Figure 8 As shown, in some specific embodiments, one end of the adjusting screw 16 is connected to a hinged portion 161, the hinged portion 161 is disposed in the movable clamping plate 12, and the clamping plate rotating shaft 17 is rotatably disposed through the hinged portion 161. The hinged portion 161 can increase the contact area between the adjusting screw 16 and the clamping plate rotating shaft 17, thereby improving the connection strength between the adjusting screw 16 and the clamping plate rotating shaft 17.

[0049] Combination Fig. 9 , Fig.10 and Fig.15 As shown, in some embodiments, the tracing mechanism 2 includes an adjusting component 21 and a tracing component 22 , and the adjusting component 21 includes: a vertical pole 211 , a mounting member 214 and a locking member 215 .

[0050] The vertical rod 211 includes a rod body 212 and a mounting portion 213. One end of the rod body 212 is connected to the clamp body 11, and the other end of the rod body 212 is connected to the mounting portion 213. The mounting portion 213 defines a rotating groove 2131 extending circumferentially along the mounting portion 213. The mounting portion 213 defines a rotating cavity 2132 connected to the rotating groove 2131. The outer peripheral surface of the mounting portion 213 is provided with a first tooth portion 2133.

[0051] The mounting member 214 is connected to the mounting portion 213 in a manner that it can rotate along the circumferential direction of the mounting portion 213. The mounting member 214 is provided with a second tooth portion 2142 that is engaged with the first tooth portion 2133. The tracer component 22 is connected to the mounting member 214 and is used to feedback position information.

[0052] The locking member 215 is passed through the rotating groove 2131 and installed in the rotating cavity 2132. The locking member 215 is passed through the mounting member 214 and abuts against the mounting member 214. The locking member 215 has a locking state and an unlocking state relative to the mounting member 214. When the locking member 215 is in the locking state, the first tooth portion 2133 and the second tooth portion 2142 are used to limit the rotation of the mounting member 214. When the locking member 215 is in the unlocking state, the first tooth portion 2133 and the second tooth portion 2142 are configured to jump teeth when subjected to force, so that the mounting member 214 can rotate relative to the mounting portion 213.

[0053] The first tooth portion 2133 and the second tooth portion 2142 each include a plurality of engaging teeth, and the first tooth portion 2133 and the second tooth portion 2142 are configured to be able to jump teeth when subjected to force, which means that the engaging teeth of the first tooth portion 2133 are separated from the engaging teeth of the currently mating second tooth portion 2142, and are engaged with the engaging teeth at other positions of the second tooth portion 2142.

[0054] One end of the rod body 212 is connected to the clamp body 11 , which may be connected in an integral manner or in separate forms, which is not limited in this embodiment.

[0055] When the angle of the tracer assembly 22 needs to be adjusted, the locking member 215 is in an unlocked state, and an external force is applied to the mounting member 214 to rotate the mounting member 214 relative to the mounting portion 213, so that the tracer assembly 22 can rotate along the circumferential direction of the mounting portion 213. After the angle of the tracer assembly 22 is adjusted, the locking member 215 is in a locked state to limit the mounting member 214 from rotating relative to the mounting portion 213.

[0056] When the locking member 215 is in the unlocked state, the first tooth portion 2133 and the second tooth portion 2142 are configured to be able to jump teeth when subjected to force, and the clamping action between the first tooth portion 2133 and the second tooth portion 2142 provides a certain resistance, so that the mounting member 214 can avoid arbitrary rotation when there is no external force, thereby ensuring the stability of the tracer assembly 22. When the position needs to be adjusted, a certain external force needs to be applied to make the first tooth portion 2133 and the second tooth portion 2142 jump teeth, thereby preventing the angle change caused by the operator's misoperation through the resistance between the first tooth portion 2133 and the second tooth portion 2142. In addition, through the tooth-jumping function of the first tooth portion 2133 and the second tooth portion 2142, the mounting member 214 can be quickly adjusted to different angular positions, thereby improving the operating efficiency of the tracer mechanism 2.

[0057] When the locking member 215 is in the locking state, the first tooth portion 2133 and the second tooth portion 2142 restrict the mounting member 214 from rotating relative to the mounting portion 213 , thereby increasing the stability of the tracer assembly 22 .

[0058] The locking member 215 is passed through the rotating groove 2131 and installed in the rotating cavity 2132, and is passed through the mounting member 214 and abuts against the mounting member 214, thereby enhancing the overall structural stability of the adjustment component 21, making the mounting component 214 more stable during rotation, and improving the tracking accuracy of the tracking component 22.

[0059] Combination Fig. 9 , Fig.13 and Fig.14 In some embodiments, the mounting member 214 includes a rotating mounting member 2141 and a mounting rod 2144, a second tooth portion 2142 is provided on one side of the rotating mounting member 2141, and a third tooth portion 2143 is provided on the other side of the rotating mounting member 2141, the mounting rod 2144 includes a connecting rod 2147 connected to the tracer assembly 22 and a connecting portion 2148 connected to the connecting rod 2147, the connecting portion 2148 is provided with a fourth tooth portion 2149 engaged with the third tooth portion 2143, when the locking member 215 is in a locked state, the third tooth portion 2143 and the fourth tooth portion 2149 are used to limit the rotation of the connecting portion 2148, and when the locking member 215 is in an unlocked state, the third tooth portion 2143 and the fourth tooth portion 2149 are configured to be able to jump teeth when subjected to force, so that the connecting portion 2148 can rotate relative to the rotating mounting member 2141 along the circumferential direction of the connecting portion 2148.

[0060] The third tooth portion 2143 and the fourth tooth portion 2149 each include a plurality of engaging teeth, and the third tooth portion 2143 and the fourth tooth portion 2149 are configured to be able to jump teeth under force, which means that the engaging teeth of the third tooth portion 2143 are separated from the engaging teeth of the currently mating fourth tooth portion 2149, and are engaged with the engaging teeth at other positions of the fourth tooth portion 2149.

[0061] When the angle of the tracer assembly 22 needs to be adjusted, the locking member 215 is unlocked, and an external force is applied to the rotating mounting member 2141 to rotate the rotating mounting member 2141 relative to the mounting portion 213, so that the tracer assembly 22 can rotate along the circumferential direction of the mounting portion 213. An external force is applied to the connecting portion to rotate the connecting portion 2148 relative to the rotating mounting member 2141, so that the tracer assembly 22 can rotate along the circumferential direction of the connecting portion 2148.

[0062] The mounting component 214 of the present embodiment adjusts the tracing component 22 in all directions, so that the tracing component 22 can adapt to complex usage conditions, thereby enabling the tracing component 22 to meet diverse usage requirements and improve the tracing accuracy of the tracing component 22 .

[0063] When the locking member 215 is in the unlocked state, the third tooth portion 2143 and the fourth tooth portion 2149 are configured to be able to jump teeth when subjected to force, and the clamping action between the third tooth portion 2143 and the fourth tooth portion 2149 provides a certain resistance, so that the mounting member 214 can avoid arbitrary rotation when there is no external force, thereby ensuring the stability of the tracer assembly 22. When the position needs to be adjusted, a certain external force needs to be applied to make the third tooth portion 2143 and the fourth tooth portion 2149 jump teeth, thereby preventing the angle change caused by the operator's misoperation through the resistance between the third tooth portion 2143 and the fourth tooth portion 2149. In addition, through the tooth-jumping function of the third tooth portion 2143 and the fourth tooth portion 2149, the mounting member 214 can be quickly adjusted to different angular positions, thereby improving the operating efficiency of the tracer mechanism 2.

[0064] When the locking member 215 is in the locking state, the third tooth portion 2143 and the fourth tooth portion 2149 restrict the mounting member 214 from rotating relative to the mounting portion 213 , thereby increasing the stability of the tracer assembly 22 .

[0065] Combination Fig. 9 and Fig.12 As shown, in some embodiments, the locking member 215 includes: a locking rod 2151 and a second locking knob 2152. A portion of the locking rod 2151 is inserted through the rotating mounting member 2141 and the connecting portion 2148, and another portion of the locking rod 2151 is inserted through the rotating groove 2131 and is installed in the rotating cavity 2132 in a manner that it can rotate along the circumferential direction of the mounting portion 213. The second locking knob 2152 is located on a side of the connecting portion 2148 away from the rotating mounting member 2141 and abuts against the connecting portion 2148. The second locking knob 2152 is connected to the locking rod 2151 in a manner that it can move along the length direction of the locking rod 2151, and the second locking knob 2152 has a locked state and an unlocked state.

[0066] The second locking knob 2152 is connected to the locking rod 2151 in a manner that it can move along the length direction of the locking rod 2151. The second locking knob 2152 has a locking state and an unlocking state. When the second locking knob 2152 is in the locking state, the second locking knob 2152 generates a large squeezing force on the rotating mounting member 2141, the mounting portion 213 and the connecting portion 2148, thereby clamping the first tooth portion 2133 and the second tooth portion 2142, and clamping the third tooth portion 2143 and the fourth tooth portion 2149, thereby limiting the rotation of the rotating mounting member 2141 relative to the mounting portion 213, and limiting the rotation of the connecting portion 2148 relative to the rotating mounting member 2141.

[0067] When the second locking knob 2152 is in the unlocked state, the second locking knob 2152 generates a smaller squeezing force on the rotating mounting member 2141, the mounting portion 213 and the connecting portion 2148, the clamping strength between the first tooth portion 2133 and the second tooth portion 2142 is smaller, and the clamping strength between the third tooth portion 2143 and the fourth tooth portion 2149 is smaller, so that the rotating mounting member 2141 is subjected to force to rotate relative to the mounting portion 213, and the connecting portion 2148 is subjected to force to rotate relative to the rotating mounting member 2141.

[0068] Since the locking rod 2151 is inserted into the rotation groove 2131 and can rotate in the rotation cavity 2132, when adjusting the position and angle of the tracer assembly 22, the second locking knob 2152 is first rotated to the unlocked state, and the mounting member 214 and the connecting portion 2148 can be flexibly rotated at this time. After adjusting to a suitable position, the second locking knob 2152 is tightened to restore the components to the locked state, thereby achieving accurate adjustment and fixation of the position and angle of the tracer assembly 22.

[0069] The locking rod 2151 passes through the rotating mounting member 2141, the connecting portion 2148 and the rotating cavity 2132 of the mounting portion 213, forming a stable connection structure, thereby enhancing the overall structural stability of the adjustment assembly 21, making the mounting member 214 more stable during the rotation process, and improving the tracking accuracy of the tracking assembly 22.

[0070] In some specific embodiments, the second locking knob 2152 is threadedly connected to the locking rod 2151 .

[0071] The second locking knob 2152 is threadedly connected to the locking rod 2151, and has a reliable locking function. Through the threaded connection, the second locking knob 2152 can stably realize the locking and unlocking operations on the locking rod 2151, and can remain stable for a long time in the locked state, and is not prone to loosening, thereby improving the reliability of the tracer mechanism 2.

[0072] like Fig. 9As shown, in some optional embodiments, the adjustment assembly 21 also includes a spring 216, which stops between the rotating mounting member 2141 and the connecting portion 2148. The spring 216 is used to drive the rotating mounting member 2141 and the connecting portion 2148 to move away from each other when the second locking knob 2152 is in an unlocked state.

[0073] When adjusting the tracer assembly 22, the elastic force of the spring 216 can make the rotating mounting member 2141 and the connecting portion 2148 move away from each other, thereby further reducing the clamping strength between the third tooth portion 2143 and the fourth tooth portion 2149, so that the operator can control the rotation between the rotating mounting member 2141 and the connecting portion 2148 by applying a smaller external force, thereby reducing the difficulty of adjusting the tracer assembly 22.

[0074] Combination Fig. 9 and Fig.11 As shown, the adjustment assembly 21 further includes a rotating body 217 , which is rotatably disposed in the rotating cavity 2132 . The rotating body 217 is provided with a mounting groove 2171 , and the locking rod 2151 extends into the mounting groove 2171 and is connected to the rotating body 217 .

[0075] The rotating body 217 provides a support structure for the locking rod 2151 in the rotating cavity 2132, so that the locking rod 2151 is more firmly arranged in the rotating cavity 2132. The cooperation between the rotating body 217 and the rotating cavity 2132 can reduce the shaking of the locking rod 2151 in the inner and outer directions of the rotating cavity 2132, so that the tracer assembly 22 is more stable.

[0076] The rotating body 217 is rotatably disposed in the rotating cavity 2132, providing a more stable support for the rotation of the locking rod 2151. When adjusting the angle of the tracer assembly 22, the rotating body 217 can ensure that the locking rod 2151 rotates according to a predetermined trajectory, thereby preventing the locking rod 2151 from rotating and deviating, and reducing the difficulty of the operator during the adjustment process.

[0077] Combination Fig.15 , Fig.16 , Fig.17 and Fig.18As shown, in some embodiments, the tracer assembly 22 includes a tracer ball 221, a tracer plate 222, a buckle 223 and a knob 224, the tracer ball 221 is mounted on the tracer plate 222, the tracer ball 221 is used to feedback position information, the tracer plate 222 is provided with a mounting hole 2221, the mounting rod 2144 also includes a clamping portion 2145 connected to the connecting rod 2147, the clamping portion 2145 is located on the side of the connecting rod 2147 away from the connecting portion 2148, the clamping portion 2145 defines a clamping slot 2146, and the buckle 223 includes mutually connected The buckle body 2231 and the claw 2232, the buckle body 2231 is arranged in the mounting hole 2221, the claw 2232 is arranged in the slot 2146, the knob 224 is rotatably arranged in the mounting hole 2221, the knob 224 has a clamping position and a separation position relative to the buckle 223, the knob 224 at the clamping position is connected to the claw 2232, and the claw 2232 is elastically deformed so that the claw 2232 is clamped in the slot 2146, and the knob 224 at the separation position is separated from the claw 2232 so that the claw 2232 is released from the clamping.

[0078] When the tracer component 22 needs to be installed on the adjustment component 21, the buckle body 2231 of the buckle 223 is aligned with the mounting hole 2221, and the claw 2232 is aligned with the slot 2146. The tracer component 22 can be quickly placed on the mounting rod 2144, and the knob 224 is located in the engaging position. The knob 224 is connected to the claw 2232, and the claw 2232 is elastically deformed so that the claw 2232 is engaged in the slot 2146, so that the tracer component 22 is installed on the adjustment component 21.

[0079] When it is necessary to separate the tracer assembly 22 from the adjustment assembly 21 , the knob 224 is located at the separation position, and the knob 224 is separated from the claw 2232 to release the clamping of the claw 2232 , and the tracer assembly 22 is removed from the adjustment assembly, thereby achieving the separation of the tracer assembly 22 from the adjustment assembly 21 .

[0080] The knob 224 is provided to reduce the difficulty of installing and removing the tracer assembly 22 , making the installation and removal processes of the tracer assembly 22 simple and quick.

[0081] Combination Fig.15 , Fig.16 , Fig.17 and Fig.18As shown, in some embodiments, the knob 224 includes a knob body 2241, a positioning boss 2242 and a driving portion 2243. The knob body 2241 is connected to the positioning boss 2242. A first positioning platform 2222 and a second positioning platform 2223 are provided in the mounting hole 2221. The positioning boss 2242 is located between the first positioning platform 2222 and the second positioning platform 2223. When the knob 224 is in the clamping position, the positioning boss 2242 abuts against the first positioning platform 2222. When the knob 224 is in the separation position, the positioning boss 2242 abuts against the first positioning platform 2222. 42 is in contact with the second positioning platform 2223; the driving portion 2243 is connected to the button body 2241, the button body 2231 is provided with a through hole 2233, the driving portion 2243 is passed through the through hole 2233, and is located on the inner side of the claw 2232 in the inward and outward directions of the button body 2231. When the knob 224 is in the engaged position, the driving portion 2243 is connected to the claw 2232 and presses the claw 2232 outward in the inward and outward directions of the button body 2231. When the knob 224 is in the separated position, the driving portion 2243 is separated from the claw 2232.

[0082] The first positioning platform 2222 and the second positioning platform 2223 can define the engaging position and the disengaging position of the knob 224. When the knob 224 is in the engaging position, the positioning boss 2242 abuts against the first positioning platform 2222, ensuring that the knob 224 is in the correct locking position. At this time, the driving part 2243 can stably squeeze the claw 2232 outward, so that the claw 2232 is firmly engaged in the slot 2146, thereby ensuring the reliability of the connection between the tracer assembly 22 and the mounting rod 2144. When the knob 224 is in the disengaging position, the positioning boss 2242 abuts against the second positioning platform 2223, clearly indicating to the operator that the knob 224 is in the unlocked state, and the claw 2232 is separated from the slot 2146, which facilitates the disassembly or adjustment of the tracer assembly 22.

[0083] When the driving part 2243 is in the engaging position, it is connected to the claw 2232 and squeezes the claw 2232 outward, so that the claw 2232 can generate sufficient engaging force, thereby making the claw 2232 firmly engaged in the slot 2146, so that the claw 2232 is not easy to be separated from the slot 2146, thereby improving the stability of the tracer assembly 22 during operation, thereby ensuring that the tracer ball 221 can accurately feedback the position information.

[0084] When the knob 224 is located at the separation position, the driving part 2243 is separated from the claw 2232, and the claw 2232 can be released from the clamping state smoothly, thereby making the disassembly process of the tracer assembly 22 simple and quick.

[0085] The driving portion 2243 passes through the through hole 2233 of the buckle body 2231 and is located inside the claw 2232 , thereby fully utilizing the space inside the buckle body 2231 , making the structure of the tracer assembly 22 more compact and facilitating miniaturization of the tracer assembly 22 .

[0086] Combination Fig.15 and Fig.16 As shown, in some specific embodiments, the tracer assembly 22 also includes a snap ring 225, the tracer plate 222 is provided with a positioning groove 2224, one end of the positioning groove 2224 forms an opening, the tracer ball 221 is arranged in the positioning groove 2224 through the opening, the snap ring 225 is connected to the tracer plate 222, and covers the opening of the positioning groove 2224, and the snap ring 225 is connected to the tracer ball 221.

[0087] The design of an opening at one end of the positioning groove 2224 facilitates the placement of the tracer ball 221 therein, and the retaining ring 225 covers the opening and is connected to the tracer ball 221, which can effectively prevent the tracer ball 221 from escaping from the positioning groove 2224, thereby allowing the tracer ball 221 to be stably located in the positioning groove 2224.

[0088] In some specific embodiments, the tracer plate 222 is provided with a locking protrusion and an unlocking protrusion. When the knob 224 is in the engaging position, the button body 2241 points to the locking protrusion. When the knob 224 is in the separating position, the button body 2241 points to the unlocking protrusion.

[0089] The locking protrusion and the unlocking protrusion provide clear operation guidance for the operator. The operator can quickly and intuitively determine the current position state of the knob 224 by observing whether the button body 2241 is pointing to the locking protrusion or the unlocking protrusion, thereby improving the accuracy of the operation.

[0090] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A bone needle fixed tracer, characterized in that: include: The clamping mechanism comprises a clamp body, a movable clamp plate and a clamping member, wherein the clamp body is provided with a plurality of clamping grooves and clamping holes, the movable clamp plate and the clamping grooves are used to clamp a first bone needle, the clamping member is used to clamp a second bone needle, and the clamping holes are used to clamp and guide the second bone needle. The plurality of clamping grooves and the clamping holes are sequentially arranged along a preset direction, the movable clamping plate is arranged opposite to the plurality of clamping grooves, the movable clamping plate is rotatably arranged on the clamp body so as to be able to approach or move away from the clamping grooves, the clamping member is arranged on the clamp body, the clamping member is arranged corresponding to the clamping holes, and the clamping member is movably arranged on the clamp body so as to be able to approach or move away from the clamping holes; The tracing mechanism is arranged on the clamp body, and the tracing mechanism is used to feed back position information.

2. The bone needle fixed tracer according to claim 1, characterized in that: The clamping member includes a clamping piece and a locking bolt, and the locking bolt includes a locking knob and a locking screw that are connected to each other. The locking knob is located on the side of the clamp body away from the clamping hole and abuts against the clamp body. The locking screw passes through the clamp body. The clamping hole is formed with an opening, and part of the clamping piece extends into the clamping hole through the opening. The clamping piece is movably threadedly connected to the locking screw so as to be able to move in a direction close to the clamping hole or in a direction away from the clamping hole.

3. The bone needle fixed tracer according to claim 2, characterized in that: The locking bolt also includes a limiting boss arranged on the locking screw, and the clamping mechanism also includes a limiting shaft, which is arranged in the clamp body and abuts against the limiting boss, and the limiting shaft is located between the limiting boss and the locking knob.

4. The bone needle fixed tracer according to claim 2, characterized in that: The movable clamping plate is provided with a receiving groove, and the clamping member is located between the movable clamping plate and the clamp body and in the receiving groove.

5. The bone needle fixed tracer according to claim 2, characterized in that: The clamping mechanism also includes an adjusting knob, an adjusting screw and a clamping plate shaft, the adjusting knob, the adjusting screw and the clamping plate shaft are all located on the side of the clamping groove away from the clamping hole, the adjusting knob is located on the side of the clamp body away from the movable clamp plate, the clamping plate shaft is arranged on the movable clamp plate, the adjusting screw is threadedly connected to the clamp body, one end of the adjusting screw is connected to the adjusting knob, and the clamping plate shaft is rotatably passed through the other end of the adjusting screw.

6. The bone needle fixed tracer according to any one of claims 1 to 5, characterized in that: The tracer mechanism comprises an adjustment component and a tracer component, and the adjustment component comprises: A vertical rod, comprising a rod body and a mounting portion, wherein one end of the rod body is connected to the fixture body, and the other end of the rod body is connected to the mounting portion, the mounting portion defines a rotation groove extending along the circumference of the mounting portion, the mounting portion defines a rotation cavity communicating with the rotation groove, and the outer circumferential surface of the mounting portion is provided with a first tooth portion; A mounting member is connected to the mounting portion in a manner that it can rotate along the circumferential direction of the mounting portion, the mounting member is provided with a second tooth portion that is engaged with the first tooth portion, the tracing assembly is connected to the mounting member, and the tracing assembly is used to feed back position information; A locking member is passed through the rotation groove and installed in the rotation cavity. The locking member is passed through the mounting member and abuts against the mounting member. The locking member has a locking state and an unlocking state relative to the mounting member. When the locking member is in the locking state, the first tooth portion and the second tooth portion are used to limit the rotation of the mounting member. When the locking member is in the unlocking state, the first tooth portion and the second tooth portion are configured to jump teeth when subjected to force, so that the mounting member can rotate relative to the mounting portion.

7. The bone needle fixed tracer according to claim 6, characterized in that: The mounting member comprises a rotating mounting member and a mounting rod, the second tooth portion is provided on one side of the rotating mounting member, the third tooth portion is provided on the other side of the rotating mounting member, the mounting rod comprises a connecting rod connected to the tracer assembly and a connecting portion connected to the connecting rod, the connecting portion is provided with a fourth tooth portion engaged with the third tooth portion, When the locking member is in the locking state, the third tooth portion and the fourth tooth portion are used to limit the rotation of the connecting portion; when the locking member is in the unlocking state, the third tooth portion and the fourth tooth portion are configured to be able to jump teeth when subjected to force, so that the connecting portion rotates relative to the rotating mounting member along the circumferential direction of the connecting portion.

8. The bone needle fixed tracer according to claim 7, characterized in that: The locking member comprises: A locking rod, a part of which is passed through the rotating mounting member and the connecting portion, and another part of which is passed through the rotating groove and is installed in the rotating cavity in a manner that it can rotate along the circumferential direction of the mounting portion. A second locking knob, the second locking knob is located on the side of the connecting portion away from the rotating mounting member and abuts against the connecting portion, the second locking knob is connected to the locking rod in a manner that it can move along the length direction of the locking rod, and the second locking knob has the locking state and the unlocking state.

9. The bone needle fixed tracer according to claim 7 or 8, characterized in that: The tracer assembly includes a tracer ball, a tracer plate, a buckle and a knob, wherein the tracer ball is mounted on the tracer plate, and the tracer ball is used to feedback position information, the tracer plate is provided with a mounting hole, and the mounting rod further includes a clamping portion connected to the connecting rod, the clamping portion is located on a side of the connecting rod away from the connecting portion, and the clamping portion defines a clamping slot, The buckle includes a buckle body and a claw connected to each other, the buckle body is arranged in the mounting hole, the claw is arranged in the slot, and the knob is rotatably arranged in the mounting hole. The knob has a clamping position and a separation position relative to the buckle. The knob located at the clamping position is connected to the claw and causes the claw to elastically deform so that the claw is clamped in the slot. The knob located at the separation position is separated from the claw so that the claw is released from the clamping.

10. The bone needle fixed tracer according to claim 9, characterized in that: The knob comprises a knob body, a positioning boss and a driving part, the knob body is connected to the positioning boss, a first positioning platform and a second positioning platform are arranged in the mounting hole, the positioning boss is located between the first positioning platform and the second positioning platform, when the knob is located at the clamping position, the positioning boss abuts against the first positioning platform, when the knob is located at the separation position, the positioning boss abuts against the second positioning platform; The driving part is connected to the button body, and the button body is provided with a through hole. The driving part is passed through the through hole and is located on the inner side of the claw in the inner and outer directions of the button body. When the knob is located at the engaging position, the driving part is connected to the claw and presses the claw outward in the inner and outer directions of the button body. When the knob is located at the separation position, the driving part is separated from the claw.

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