Tracer mounting structure for grinding file rod

Abstract

The utility model discloses a tracer installation structure for a file rod, comprising a sleeve, wherein the sleeve is fixedly connected to the tracer, the sleeve is sleeved outside the file rod, and further comprising a block and a slot respectively arranged on the file rod and the sleeve, wherein the block and the slot abut against each other in the axial and circumferential directions of the file rod. The utility model positions the file rod and the sleeve of the tracer through the block and the slot, and when the sleeve is installed forward in place through the V-shaped positioning structure, the abutment of the inclined surfaces on both sides of the V-shape not only limits the axial position, but also limits the circumferential position of the sleeve relative to the file rod, and through the tightening effect of the rear end nut, the block and the slot are ensured to be matched in place, thereby ensuring the precise positional relationship between the sleeve and the front end file head of the file rod, and supporting the uniform positioning during repeated disassembly and assembly.

Description

Technical Field

[0001] The utility model belongs to the field of medical instruments and relates to a tracer installation structure for a file grinding rod. Background Art

[0002] In orthopedic navigation surgery for hip joint grinding and rasp, a combination of a rasp rod, a robotic arm, a bone drill, etc. is often used. A rasp head is installed at the front end of the rasp rod to grind the acetabulum. In order to ensure the accuracy of the grinding position and the safety of the operation during the operation, the position of the rasp head needs to be monitored in real time. Currently, a three-dimensional navigation tracking system is used in conjunction with a tracer installed on the rasp rod to achieve this. The position of the rasp head is determined by monitoring the position of the tracer.

[0003] The above-mentioned method for positioning the file head requires that the tracer is installed on the file rod at a calculated position relationship with the file head, including specific axial and circumferential positions, and according to different scene requirements during the operation, the tracer and the file rod may be repeatedly disassembled and assembled. During each installation, it is necessary to ensure that the position relationship between the file head and the tracer is stable, otherwise it will affect the tracking and positioning effect of the file head. Existing tracers and file rods are mostly fastened with screws, and the installation and positioning effect is not ideal. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a tracer installation structure for a file rod.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A tracer mounting structure for a grinding file rod comprises a sleeve, the sleeve is fixedly connected to a tracer, the sleeve is sleeved outside the grinding file rod, and further comprises a clamping block and a clamping groove respectively arranged on the grinding file rod and the sleeve, the clamping block and the clamping groove abut against each other in the axial direction and circumferential direction of the grinding file rod.

[0007] Furthermore, the block is in a triangular structure, the slot is in a V-shaped structure for the block to extend axially into the grinding rod, and is connected to the opening at the axial front end of the sleeve, and the two side walls of the block along the circumference of the grinding rod respectively abut against the inner walls on both sides of the slot.

[0008] Furthermore, it also includes a nut, which is sleeved on the grinding rod and abuts against the rear end of the sleeve along the axial direction of the grinding rod.

[0009] Furthermore, the nut is threadably connected to the grinding rod.

[0010] Furthermore, the sleeve is a hollow cylindrical structure, and the sleeve is coaxially sleeved on the grinding rod.

[0011] In summary, the utility model is beneficial in that:

[0012] The utility model positions the file rod and the sleeve of the tracer by means of a clamping block and a clamping groove, and when the sleeve is installed forward into position during installation through the V-shaped positioning structure, the cooperation of the inclined surfaces on both sides of the V-shape not only limits the axial position, but also limits the circumferential position of the sleeve relative to the file rod, and through the fastening effect of the rear end nut, the clamping block and the clamping groove are ensured to be matched in place, thereby ensuring the accurate positional relationship between the sleeve and the front end file head of the file rod, and supporting the uniformity of positioning during repeated disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the installation structure of the file rod and the sleeve of the utility model.

[0014] Figure 2 for Figure 1 A is an enlarged schematic diagram.

[0015] Figure 3 for Figure 1 A magnified schematic diagram of B.

[0016] Figure 4 It is a schematic diagram of the structure of the tracer 1 sleeve.

[0017] Figure 5 for Figure 1 Schematic diagram of the cross-sectional structure of the middle sleeve.

[0018] Markings in the figure: 1, tracer; 11, sleeve; 111, slot; 12, nut; 2, grinding rod; 21, block. DETAILED DESCRIPTION

[0019] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0020] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0021] All directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, horizontal, vertical...) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0022] Due to installation errors and other reasons, the parallel relationship referred to in the embodiments of the present invention may actually be an approximately parallel relationship, and the vertical relationship may actually be an approximately vertical relationship.

[0023] The utility model provides a tracer installation structure for a grinding file rod, which is used for positioning and installing the tracer on the grinding file rod.

[0024] The rasp rod 2 described in this embodiment is used for acetabular rasp in acetabular socket rasp surgery. The front end of the rasp rod 2 is provided with a rasp head. During the surgery, the position of the rasp head needs to be monitored and located in real time so as to determine the relative position of the rasp head and the acetabular socket in real time in the tracking system to ensure the accuracy and safety of the intraoperative operation.

[0025] As for the positioning of the file head, a tracer 1 is installed on the file rod 2, and the coordinate position of the tracer 1 is obtained. Then, the coordinate position of the file head can be further obtained by calculating the positional relationship between the tracer 1 and the file rod 2.

[0026] In order to ensure the accuracy of the coordinate position of the grinding head, the tracer 1 should be installed at a pre-set position on the grinding rod 2, and the grinding rod 2 is a detachable component, which may need to be replaced during surgery or different surgeries. The front end of the grinding rod 2 can also be disassembled and replaced with different components. The corresponding tracer 1 also has the situation of repeated replacement and disassembly, and the position of the tracer 1 should be consistent each time it is installed on the grinding rod 2, so as to maintain a precise positional relationship with the grinding head.

[0027] Therefore, in this embodiment, a positioning structure is provided between the tracer 1 and the grinding rod 2. Figure 1 and Figure 4 The positioning structure includes a sleeve 11 connected to the tracer 1 , the sleeve 11 is a hollow cylindrical structure, and the sleeve 11 is coaxially sleeved on the outer periphery of the grinding rod 2 .

[0028] Reference Figure 2The positioning structure also includes a block 21 arranged on the outer peripheral wall of the grinding rod 2, and a slot 111 arranged at the front end of the sleeve 11, wherein the slot 111 is in a V-shaped structure, and its opening is forwardly connected to the front end of the sleeve 11, and the block 21 is in a triangular structure. The shape of the block 21 is adapted to the shape of the slot 111, and the block 21 and the slot 111 are matched in the axial direction of the grinding rod 2. When matched, the two side inclined walls of the block 21 at an angle are respectively abutted against the two inner side inclined walls of the slot 111.

[0029] The cooperation between the block 21 and the slot 111 first limits the position of the sleeve 11 in the axial direction of the file rod 2, so that the sleeve 11 cannot move forward further when the block 21 and the slot 111 cooperate. Secondly, the cooperation between the triangle and the V-shaped side walls limits the position of the sleeve 11 in the circumferential direction of the file rod 2, so that the sleeve 11 cannot rotate relative to the file rod 2.

[0030] Further, see Figure 3 and Figure 5 The file rod 2 is also sleeved with a nut 12, which is located at the rear side of the sleeve 11. The nut 12 is threadedly connected to the file rod 2. When the nut 12 is rotated, the nut 12 can move along the axial direction of the file rod 2 and abut against the rear end of the sleeve 11. When the nut 12 and the file rod 2 are tightened, the nut 12 presses the sleeve 11 tightly, so that the block 21 at the front end is tightly matched with the slot 111, thereby effectively and stably limiting the axial and circumferential positions of the sleeve 11 and the file rod 2. When the sleeve 11 is repeatedly disassembled and assembled, it can be accurately positioned through the block 21 and the slot 111 to ensure that the installation position is fixed each time.

[0031] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

Claims

1. A tracer mounting structure for a file rod, characterized in that: The invention comprises a sleeve (11), wherein the sleeve (11) is fixedly connected to a tracer (1), and the sleeve (11) is sleeved outside the grinding rod (2). The invention also comprises a clamping block (21) and a clamping groove (111) which are respectively arranged on the grinding rod (2) and the sleeve (11), and the clamping block (21) and the clamping groove (111) are opposed to each other in the axial direction and the circumferential direction of the grinding rod (2).

2. A tracer mounting structure for a file rod according to claim 1, characterized in that: The clamping block (21) is in a triangular structure, and the clamping groove (111) is in a V-shaped structure for the clamping block (21) to extend into the grinding file rod (2) in the axial direction, and is arranged to be connected to the opening at the axial front end of the sleeve (11), and the two side walls of the clamping block (21) along the circumference of the grinding file rod (2) respectively abut against the inner walls of the two sides of the clamping groove (111).

3. A tracer mounting structure for a file rod according to claim 2, characterized in that: It also comprises a nut (12), wherein the nut (12) is sleeved on the grinding rod (2), and the nut (12) abuts against the rear end of the sleeve (11) along the axial direction of the grinding rod (2).

4. A tracer mounting structure for a file rod according to claim 3, characterized in that: The nut (12) is threadedly connected to the grinding rod (2).

5. A tracer mounting structure for a file bar according to claim 1, characterized in that: The sleeve (11) is in the form of a hollow cylindrical structure, and is coaxially sleeved on the grinding rod (2).

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