An acetabular reamer tracker adapter

Abstract

This invention discloses an adapter for an acetabular reamer tracker, relating to the field of medical device technology. It includes: a main frame with an upper mounting structure for mounting navigation markers; and a clamping part connected to the lower part of the main frame, the clamping part having a variable-diameter clamping surface that mates with the outer circumferential surface of the acetabular reamer, and a locking element for locking the variable-diameter clamping surface. The clamping part is configured to have an adjustable clamping diameter to accommodate acetabular reamers of different outer diameters. By providing an upper mounting structure for mounting navigation markers on the main frame and a lower clamping part with a variable-diameter clamping surface and a locking element, and by configuring the clamping part to have an adjustable clamping diameter, this adapter can accommodate acetabular reamers of different outer diameters, eliminating the need for dedicated calibration devices for each device, significantly reducing hospital equipment procurement costs. It also allows third-party devices to connect to optical navigation systems, fully leveraging the precision advantages of intraoperative navigation.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an adapter for an acetabular reamer tracker. Background Technology

[0002] In total hip arthroplasty, the installation accuracy of the acetabular prosthesis directly determines the surgical efficacy and prosthesis life. To improve installation accuracy, optical navigation systems have been introduced into clinical practice. Its core components include a tracking camera, a reference frame with markers, and an acetabular reamer calibration device for calibrating surgical tools. This calibration device achieves real-time intraoperative navigation by registering the spatial position of the acetabular reamer or cup installer.

[0003] However, existing technologies still have the following significant drawbacks: the calibration devices in existing navigation systems generally adopt a closed ecosystem design by the manufacturers, with their holders and calibration seats deeply bound to their own brand of acetabular reamers, making them incompatible with other brands of surgical instruments commonly used in hospitals. This results in hospitals having to purchase dedicated calibration devices for each instrument, which is costly; the process of switching between multiple systems is cumbersome and can easily lead to data confusion; third-party instruments can only be returned to manual operation, and the advantages of navigation cannot be fully utilized.

[0004] Therefore, there is an urgent need to design a highly compatible acetabular reamer tracker adapter to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a technical solution for an acetabular reamer tracker adapter to solve the problems raised in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an acetabular reamer tracker adapter, comprising: The main frame has an upper mounting structure for installing navigation markers; The clamping part is connected to the lower part of the main frame. The clamping part has a variable diameter clamping surface that mates with the outer peripheral surface of the acetabular file, and a locking member for locking the variable diameter clamping surface. The clamping part is configured to have an adjustable clamping diameter to accommodate acetabular files with different outer diameter specifications.

[0007] According to the above technical solution, by setting an installation structure for mounting navigation markers on the upper part of the main frame and a clamping part with a variable diameter clamping surface and locking element on the lower part, and the clamping part is configured to have an adjustable clamping diameter, the adapter can be compatible with acetabular reamers of different outer diameter specifications. There is no need to equip each instrument with a dedicated calibration device, which greatly reduces the hospital's equipment procurement costs. At the same time, it also allows third-party instruments to be connected to the optical navigation system, giving full play to the precision advantages of intraoperative navigation.

[0008] Preferably, the main frame includes: The base plate, the lower part of which is connected to the clamping part; The first support and the second support are fixed to both ends of the base plate and extend away from the clamping part, respectively; At least two guide rods are connected between the first support and the second support; The movable component is slidably mounted on the guide rod. An adjusting element, which cooperates with the movable element and is threadedly connected to the second support, is used to drive the movable element to move along the guide rod; And positioning elements provided on the first support and the movable part, used to cooperate with the corresponding positioning structure on the navigation marker to determine and lock the position of the navigation marker.

[0009] According to the above technical solution, stable support and precise guidance of the navigation marker are achieved; the movable part slides on the guide rod and is driven by the adjusting part, which works with the positioning element to complete the initial positioning and final locking of the navigation marker, ensuring the repeatability and stability of the spatial position of the navigation marker during the operation, thereby improving the accuracy of navigation registration.

[0010] Preferably, the guide rod is two parallel cylindrical rods; The movable component is a slider, which has a guide hole for the cylindrical rod to pass through; The adjusting component is a locking knob, which includes a knob head and a screw. The screw engages with a threaded hole on the second support, and the end of the screw is rotatably connected to a movable component.

[0011] According to the above technical solution, the guide rod is further defined as two parallel cylindrical rods, the movable part is a slider with a guide hole, and the adjusting part is a locking knob with a screw. The end of the screw can be rotatably connected to the movable part, so that the movable part moves more smoothly and without jamming. The rotation of the locking knob is directly converted into the linear displacement of the movable part, and the operation feel is clear, which makes it easy to quickly and accurately adjust the clamping position of the navigation marker during the operation.

[0012] Preferably, the positioning element is a positioning pin; The first support is provided with at least two first positioning pins for insertion into the first positioning holes on the navigation marker to define the initial position; The movable part is provided with at least two second positioning pins, which are used to insert into the second positioning holes on the navigation marker when the movable part is driven to move towards the first support by the adjusting part, thereby clamping and fixing the navigation marker between the first support and the movable part.

[0013] According to the above technical solution, by specifying the positioning element as a positioning pin, and setting at least two first positioning pins on the first support and at least two second positioning pins on the movable part, multi-point positioning and clamping of the navigation marker is realized; the first positioning pin is used to quickly determine the initial position, and the second positioning pin is inserted into the second positioning hole corresponding to the navigation marker during the movement of the movable part, forming a double positioning and locking, which effectively prevents the navigation marker from shifting or rotating during the operation and significantly improves the stability of the navigation system.

[0014] Preferably, the movable part has a countersunk hole on the side facing the second support; The screw end of the locking knob is provided with an annular groove along the circumference; The screw end of the locking knob can be rotatably inserted into the countersunk hole; The movable part has a fixing hole perpendicular to the axis of the countersunk hole. A fixing pin is fixedly installed in the fixing hole. The fixing pin extends into the annular groove to limit the axial movement of the locking knob relative to the movable part.

[0015] According to the above technical solution, by setting a countersunk hole on the movable part and an annular groove at the end of the screw, and by using the fixing pin in the vertical fixing hole to tangentially engage with the annular groove, the screw end and the movable part are rotatably connected and axially limited. This structure is simple and compact, avoids relative axial movement between the screw and the movable part during rotation, ensures the transmission accuracy and reliability when the locking knob drives the movable part to move, and facilitates disassembly and replacement.

[0016] Preferably, the clamping part includes: A clamping seat has an opening on one side, and the inner top wall of the opening has a first clamping surface; A movable clamping block is movably installed inside the clamping seat. The movable clamping block has a second clamping surface opposite to the first clamping surface, and the movable clamping block is configured to move vertically upward. A driving component, mounted on a clamping base and connected to a movable clamping block, is used to drive the movable clamping block to move toward or away from the first clamping surface in order to adjust the clamping diameter between the first clamping surface and the second clamping surface. The variable diameter clamping surface includes a first clamping surface and a second clamping surface.

[0017] According to the above technical solution, the clamping diameter can be continuously adjusted, which is suitable for acetabular files with different diameters. The vertical upward movement of the movable clamping block can be self-centering, ensuring that the relative position of the axis of the acetabular file and the reference of the adapter is consistent after the acetabular file is clamped, which is beneficial to the spatial registration of the navigation system.

[0018] Preferably, the driving component includes an adjustment knob and a threaded rod fixedly connected to the adjustment knob; The clamping seat is provided with a threaded hole, the threaded rod is screwed into the threaded hole, and the end of the threaded rod is rotatably connected to the movable clamping block; The movable clamping block is provided with a limiting structure to restrict the axial movement of the threaded rod relative to the movable clamping block while allowing it to rotate.

[0019] According to the above technical solution, the threaded rod is axially limited relative to the movable clamping block, allowing it to rotate. This design ensures that when the adjustment knob is rotated, the threaded rod drives the movable clamping block to move smoothly, the clamping force is uniform and controllable, the operation is labor-saving, and the limiting structure prevents the threaded rod from coming out, thus improving the reliability of the clamping part.

[0020] Preferably, the clamping part includes: A first clamping arm and a second clamping arm, wherein one end of the first clamping arm and the second clamping arm are hinged to each other; The first clamping arm and the second clamping arm are respectively provided with a first clamping surface and a second clamping surface on their opposite surfaces. When the first clamping arm and the second clamping arm are closed, the first clamping surface and the second clamping surface together form a clamping hole that mates with the outer peripheral surface of the acetabular file. And a fastening buckle, the middle of which is hinged to the first clamping arm or the second clamping arm, one end of which is used to engage with a slot on the other clamping arm to lock the first clamping arm and the second clamping arm in a closed state.

[0021] According to the above technical solution, the structure has a large opening angle, which can quickly insert or remove the acetabular reamer, making it especially suitable for scenarios where instruments are frequently changed during surgery; the buckle is firmly locked, and after closing, the clamping hole fits tightly with the outer peripheral surface of the acetabular reamer, making it not easy to loosen.

[0022] Preferably, two semi-cylindrical retaining rings are provided in the clamping hole, and the two semi-cylindrical retaining rings are detachably installed on the first clamping surface and the second clamping surface, respectively; When the first clamping arm and the second clamping arm are closed, the two semi-cylindrical retaining rings engage with each other to form a clamping cavity that matches the outer circumferential surface of the acetabular file. Furthermore, by replacing the semi-cylindrical retaining rings with different inner diameters, it is possible to accommodate acetabular files with different outer diameter specifications.

[0023] According to the above technical solution, different outer diameter acetabular file rods can be adapted by replacing the retaining rings with different inner diameters. Compared with directly relying on the clamping arm to deform and adapt to the rod diameter, the replaceable retaining ring method can accurately match multiple standard rod diameters, avoid damage to the file rod surface due to excessive clamping force, expand the applicability of the adapter, and further reduce dependence on original equipment manufacturer (OEM) instruments.

[0024] Preferably, the first clamping surface and / or the second clamping surface is one or more combinations of a V-groove, an arc groove, or a plane.

[0025] According to the above technical solution, the clamping surface can be optimized according to the cross-sectional shape of the acetabular file, increasing the contact area and frictional resistance, preventing the file from slipping or moving axially during the operation, while avoiding stress concentration that could scratch the instrument surface, thus balancing clamping stability and instrument protection.

[0026] Compared with the prior art, the beneficial effects of the present invention are: This invention provides an adapter for an acetabular reamer tracker. By incorporating an adjustable clamping diameter clamping section on the main frame and specifically designing a vertically lifting movable clamping block or a hinged clamping arm with replaceable semi-cylindrical retaining rings, it is compatible with multiple brands and specifications of acetabular reamer rods, significantly reducing hospital equipment procurement and management costs and enabling third-party instruments to achieve high-precision navigation capabilities. Simultaneously, the main frame employs a layered structure of double supports, guide rods, movable sliders, and positioning pins, driven by a locking knob, achieving precise positioning and stable locking of navigation markers, ensuring the registration and tracking accuracy of the optical navigation system. Furthermore, this adapter is easy to operate and quick to assemble and disassemble. The clamping surface design increases the contact area, preventing instrument scratches, and the axial limiting structure is reliable and durable. This low-cost, highly compatible, easy-to-operate, and high-precision technical solution addresses clinical pain points and has outstanding practical value and promising prospects for widespread application. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the acetabular reamer tracker adapter of the present invention; Figure 2 This is a schematic diagram of the main frame structure of the adapter of the present invention; Figure 3 This is a schematic diagram of the main frame and movable parts of the adapter of the present invention; Figure 4 This is a schematic diagram of the adjusting component structure of the adapter of the present invention; Figure 5 This is a schematic diagram of the movable component structure of the adapter of the present invention; Figure 6 This is a schematic diagram of the clamping part in the first embodiment of the adapter of the present invention; Figure 7 This is a schematic diagram of the split structure of the clamping part in the first embodiment of the adapter of the present invention; Figure 8 This is a schematic diagram of the clamping part in the second embodiment of the adapter of the present invention; Figure 9 This is a schematic diagram of the split structure of the clamping part in the second embodiment of the adapter of the present invention; Figure 10 This is a schematic diagram of the clamping part in the open state of the second embodiment of the adapter of the present invention.

[0028] Map label: 100, navigation marker; 201. Base plate; 202. First support; 203. Second support; 204. Guide rod; 300. Moving part; 301. Adjusting part; 3011. Knob head; 3012. Screw; 3013. Annular groove; 3021. First locating pin; 3022. Second locating pin; 303. Guide hole; 305. Countersunk hole; 306. Fixing hole; 401. Clamping seat; 402. Opening; 403. Movable clamping block; 4041. Adjustment knob; 4042. Threaded rod; 405. Threaded hole; 501, First clamping arm; 502, Second clamping arm; 503, Clamping hole; 504, Fastening buckle; 505, Slot; 506, Semi-cylindrical retaining ring; 507, Clamping cavity. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1: In this example, an acetabular reamer tracker adapter has the following overall structure. Figures 1 to 7 As shown.

[0031] The adapter includes a main frame and a clamping part connected to the lower part of the main frame. The upper part of the main frame is provided with a mounting structure for mounting the navigation marker 100. The mounting structure can be a support surface with a positioning pin and a clamping device for reliably fixing the navigation marker 100 to the main frame.

[0032] In this embodiment, the navigation marker 100 is an active light-emitting tracker that can be identified in real time by the tracking camera of the optical navigation system, thereby achieving high-precision tracking of the spatial position of the acetabular file.

[0033] The clamping part is used to fix the adapter to the acetabular file rod of different brands and diameters, so that the navigation system can track the spatial position of the acetabular file in real time through the navigation marker 100.

[0034] Specifically, the structure of the main framework is as follows: Figures 2 to 3 As shown, the main frame includes a base plate 201. The lower part of the base plate 201 is fixedly connected to the clamping part. At both ends of the base plate 201, a first support 202 and a second support 203 are fixed respectively. Both supports extend away from the clamping part.

[0035] At least two guide rods 204 are connected between the first support 202 and the second support 203. In this embodiment, two parallel cylindrical guide rods 204 are preferred. A movable member 300 is slidably mounted on the two guide rods 204. The movable member 300 is designed as a slider and has a guide hole 303 for the guide rods 204 to pass through, thereby ensuring that the movable member 300 can move back and forth smoothly along the guide rods 204.

[0036] Furthermore, such as Figure 3 and Figure 4 As shown, in order to drive the movable part 300 to move, this embodiment provides an adjusting part 301. The adjusting part 301 adopts a locking knob structure, including a knob head 3011 that is easy to pinch with fingers and a screw 3012 that is fixedly connected to it. The second support 203 has a threaded hole that mates with the screw 3012. After the screw 3012 is screwed into the threaded hole, its end extends to one side of the movable part 300.

[0037] It should be further noted that the end of the screw 3012 and the moving part 300 are connected by a rotatable and axially limited method, specifically as follows: Figure 4 and Figure 5 As shown, the movable part 300 has a countersunk hole 305 on the side facing the second support 203. The end of the screw 3012 has an annular groove 3013 machined circumferentially, and the end of the screw 3012 is inserted into the countersunk hole 305. At the same time, a fixing hole 306 is provided on the movable part 300 in a direction perpendicular to the axis of the countersunk hole 305. A fixing pin (not separately labeled in the figure) is interference-fitted into the fixing hole 306. The fixing pin extends into the annular groove 3013. In this way, when the knob head 3011 is rotated, the screw 3012 moves axially relative to the second support 203. However, since the fixing pin is stuck in the annular groove 3013, the screw 3012 will not come out of the movable part 300 and can rotate freely, thereby driving the movable part 300 to move along the guide rod 204.

[0038] In order to achieve precise positioning and locking of the navigation marker 100, positioning elements are respectively provided on the first support 202 and the movable part 300.

[0039] In this embodiment, the positioning element adopts positioning pins. Specifically, at least two first positioning pins 3021 are fixed on the first support 202, and at least two second positioning pins 3022 are fixed on the movable part 300. When installing the navigation marker 100, firstly, the first positioning hole on the navigation marker 100 is aligned with the first positioning pin 3021 and inserted to complete the determination of the initial position; then, the adjusting part 301 is rotated to move the movable part 300 toward the first support 202 until the second positioning pin 3022 is inserted into the second positioning hole on the navigation marker 100, and the navigation marker 100 is tightly clamped between the first support 202 and the movable part 300.

[0040] With this dual-positioning clamping structure, the navigation marker 100 will not shift or rotate during the operation.

[0041] The clamping part in this embodiment will be described in detail below, such as Figure 6 and Figure 7 As shown, the clamping part includes a clamping seat 401. An opening 402 is provided on one side of the clamping seat 401. The opening 402 is generally C-shaped. The inner top wall of the opening 402 is machined into a first clamping surface (not separately labeled in the figure). Inside the clamping seat 401, a movable clamping block 403 is movably installed. The movable clamping block 403 is located below the opening 402, and its upper surface is provided with a second clamping surface (not separately labeled in the figure) opposite to the first clamping surface. The movable clamping block 403 is configured to move vertically upward, that is, move towards the first clamping surface.

[0042] The driving component is used to drive the movable clamping block 403 to move. In this embodiment, the driving component includes an adjustment knob 4041 and a threaded rod 4042 fixedly connected to it. The clamping seat 401 has a threaded hole 405. The threaded rod 4042 is screwed into the threaded hole 405. The end of the threaded rod 4042 is connected to the movable clamping block 403 in the same way as the aforementioned screw 3012: the movable clamping block 403 has a countersunk hole and a fixing pin. The end of the threaded rod 4042 has an annular groove, thereby achieving a rotatable connection and axial limitation.

[0043] During operation, rotating the adjustment knob 4041 causes the threaded rod 4042 to push the movable clamping block 403 upward, gradually reducing the distance between the second clamping surface and the first clamping surface until the acetabular file placed between them is clamped.

[0044] Because the stroke of the movable clamping block 403 is continuously adjustable, it can accommodate acetabular reamers of different outer diameters. The first and second clamping surfaces can be designed as one or more combinations of V-grooves, arc grooves, or planes to increase the contact area with the reamer, prevent slippage, and protect the instrument surface. Through this structure, the adapter achieves universal clamping of acetabular reamers of various brands and specifications without the need for a dedicated calibration device.

[0045] Example 2: The main difference between this example and Example 1 is that the structure of the clamping part is different, while the main frame part is completely the same as that in Example 1. Therefore, the specific structure of the main frame and the installation and locking method of the navigation marker 100 will not be described here. Those skilled in the art can refer to the corresponding description in Example 1. The following only describes the clamping part in this example in detail.

[0046] like Figures 8 to 10 As shown, the clamping part of this embodiment adopts a hinged opening and closing structure. The clamping part includes a first clamping arm 501 and a second clamping arm 502. One end of the two clamping arms is hinged to each other, so that they can open or close like the jaws of a pliers. The first clamping arm 501 and the second clamping arm 502 are respectively provided with a first clamping surface and a second clamping surface on their opposite surfaces. When the two clamping arms are closed, the two clamping surfaces together form a clamping hole 503. The axis of the clamping hole 503 is adapted to the outer peripheral surface of the acetabular file.

[0047] In order to maintain a secure locking state after closing, this embodiment provides a fastening buckle 504. The middle part of the fastening buckle 504 is hinged to the first clamping arm 501 (or the second clamping arm 502), and its free end is used to engage with the slot 505 opened on the other clamping arm.

[0048] In practice, first open the first clamping arm 501 and the second clamping arm 502, insert the acetabular reamer between them, then close the two clamping arms, and then rotate the fastening buckle 504 so that its end engages with the slot 505. Using the lever principle, the two clamping arms are pulled tight and locked. Figure 10 It clearly shows the situation when the clamping part is in the open state.

[0049] Furthermore, to ensure the stability of the acetabular reamer during use, a support component is provided on the clamping part to support the acetabular reamer, such as... Figure 8 As shown.

[0050] Furthermore, in this embodiment, two semi-cylindrical retaining rings 506 are provided in the clamping hole 503. These two semi-cylindrical retaining rings 506 are detachably installed on the first clamping surface and the second clamping surface, respectively. The installation method can be slot engagement, screw fixing or simple nesting.

[0051] When the first clamping arm 501 and the second clamping arm 502 are closed, the two semi-cylindrical retaining rings 506 engage with each other to form a complete cylindrical clamping cavity 507. The inner wall of the clamping cavity 507 is in direct contact with the outer circumferential surface of the acetabular file. Since the semi-cylindrical retaining rings 506 are detachable, retaining rings with different inner diameters can be replaced according to the actual outer diameter of the acetabular file to be clamped. For example, if the diameter of the acetabular file is 8mm, a retaining ring with an inner diameter of 8mm is selected; if the diameter is 10mm, a retaining ring with an inner diameter of 10mm is replaced.

[0052] By using this method of changing the retaining ring, various standard rod diameters can be precisely matched, avoiding damage to the surface of the file rod that may be caused by deformation due to direct clamping. At the same time, the semi-cylindrical retaining ring 506 can be made of a material with a certain coefficient of friction and a relatively soft material, which ensures stable clamping and prevents scratching of the instrument.

[0053] It should be noted that the overall spatial position of the clamping part in this embodiment is the same as that in embodiment 1: the clamping part is connected to the lower part of the main frame base plate 201, while the navigation marker 100 is still installed on the upper part of the main frame.

[0054] Therefore, during the operation, the doctor can quickly open the fastening buckle 504, open the two clamping arms, remove the adapter from one acetabular reamer, and then install it onto another reamer of a different brand or specification. The whole process does not require any tools, which greatly improves the efficiency of changing instruments during the operation.

[0055] In addition, the first clamping surface, the second clamping surface, and the inner wall of the semi-cylindrical retaining ring 506 can also be designed as V-shaped grooves or arc-shaped grooves to further enhance the adaptability to different cross-sectional shapes. Through the above structure, this embodiment also achieves compatible clamping of acetabular files of multiple brands and specifications, and completes high-precision positioning of navigation markers in cooperation with the main frame.

[0056] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An adapter for an acetabular reamer tracker, characterized in that, include: The main frame has an upper mounting structure for mounting navigation markers (100); The clamping part is connected to the lower part of the main frame. The clamping part has a variable diameter clamping surface that mates with the outer peripheral surface of the acetabular file, and a locking member for locking the variable diameter clamping surface. The clamping part is configured to have an adjustable clamping diameter to accommodate acetabular files with different outer diameter specifications.

2. The acetabular reamer tracker adapter according to claim 1, characterized in that, The main framework includes: The base plate (201) is connected to the clamping part at its lower part; The first support (202) and the second support (203) are fixed to both ends of the base plate (201) and extend away from the clamping part; At least two guide rods (204) are connected between the first support (202) and the second support (203); The movable part (300) is slidably mounted on the guide rod (204); Adjusting member (301), which cooperates with the movable member (300) and is threadedly connected to the second support (203), is used to drive the movable member (300) to move along the guide rod (204); And positioning elements provided on the first support (202) and the movable part (300) for cooperating with the corresponding positioning structure on the navigation marker (100) to determine and lock the position of the navigation marker (100).

3. The acetabular reamer tracker adapter according to claim 2, characterized in that, The guide rod (204) consists of two parallel cylindrical rods; The movable part (300) is a slider, which has a guide hole (303) for the cylindrical rod to pass through. The adjusting component (301) is a locking knob, which includes a knob head (3011) and a screw (3012). The screw (3012) engages with a threaded hole on the second support (203), and the end of the screw (3012) is rotatably connected to the movable component (300).

4. An adapter for an acetabular reamer tracker according to claim 2 or 3, characterized in that, The positioning element is a positioning pin; The first support (202) is provided with at least two first positioning pins (3021) for insertion into the first positioning hole on the navigation marker (100) to define the initial position; The movable part (300) is provided with at least two second positioning pins (3022), which are used to insert into the second positioning holes on the navigation marker (100) when the movable part (300) is driven to move towards the first support (202) by the adjusting part (301), thereby clamping and fixing the navigation marker (100) between the first support (202) and the movable part (300).

5. The acetabular reamer tracker adapter according to claim 3, characterized in that, The movable part (300) has a countersunk hole (305) on the side facing the second support (203); The screw (3012) of the locking knob has an annular groove (3013) along the circumferential direction at its end. The end of the screw (3012) of the locking knob is rotatably inserted into the countersunk hole (305); The movable part (300) has a fixing hole (306) perpendicular to the axis of the countersunk hole (305). A fixing pin is fixedly installed in the fixing hole (306). The fixing pin extends into the annular groove (3013) to limit the axial movement of the locking knob relative to the movable part (300).

6. The acetabular reamer tracker adapter according to claim 1, characterized in that: The clamping part includes: The clamping seat (401) has an opening (402) on one side, and the inner top wall of the opening (402) has a first clamping surface; A movable clamping block (403) is movably installed inside the clamping seat (401). The movable clamping block (403) is provided with a second clamping surface opposite to the first clamping surface, and the movable clamping block (403) is configured to move vertically upward. A driving component is mounted on the clamping base (401) and connected to the movable clamping block (403) to drive the movable clamping block (403) to move toward or away from the first clamping surface, so as to adjust the clamping diameter between the first clamping surface and the second clamping surface. The variable diameter clamping surface includes a first clamping surface and a second clamping surface.

7. The acetabular reamer tracker adapter according to claim 6, characterized in that, The drive unit includes an adjustment knob (4041) and a threaded rod (4042) fixedly connected to the adjustment knob (4041). The clamping seat (401) is provided with a threaded hole (405), the threaded rod (4042) is screwed into the threaded hole (405), and the end of the threaded rod (4042) is rotatably connected to the movable clamping block (403); The movable clamping block (403) is provided with a limiting structure to restrict the axial movement of the threaded rod (4042) relative to the movable clamping block (403) while allowing it to rotate.

8. The acetabular reamer tracker adapter according to claim 1, characterized in that, The clamping part includes: A first clamping arm (501) and a second clamping arm (502), wherein one end of the first clamping arm (501) and the second clamping arm (502) are hinged to each other; The first clamping arm (501) and the second clamping arm (502) are respectively provided with a first clamping surface and a second clamping surface on their opposite surfaces. When the first clamping arm (501) and the second clamping arm (502) are closed, the first clamping surface and the second clamping surface together form a clamping hole (503) that cooperates with the outer peripheral surface of the acetabular file. And a fastening buckle (504), the middle of which is hinged to the first clamping arm (501) or the second clamping arm (502). One end of the fastening buckle (504) is used to engage with a slot (505) on the other clamping arm to lock the first clamping arm (501) and the second clamping arm (502) in a closed state.

9. The acetabular reamer tracker adapter according to claim 8, characterized in that, Two semi-cylindrical retaining rings (506) are provided in the clamping hole (503), and the two semi-cylindrical retaining rings (506) are detachably installed on the first clamping surface and the second clamping surface, respectively. When the first clamping arm (501) and the second clamping arm (502) are closed, the two semi-cylindrical retaining rings (506) engage with each other to form a clamping cavity (507) that matches the outer circumferential surface of the acetabular file. By replacing the semi-cylindrical retaining rings (506) with different inner diameters, the acetabular file with different outer diameter specifications can be made compatible.

10. An acetabular reamer tracker adapter according to claim 6 or 8, characterized in that, The first clamping surface and / or the second clamping surface are one or more combinations of V-groove, arc groove or plane.

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