Tracer

Abstract

The utility model discloses a tracer, comprising a support frame and a reflective member, the reflective member comprises a first segment, and the first segment is arranged on the outer side of the support frame; the reflecting piece further comprises an installation base, the supporting frame comprises a countersunk head groove, and the installation base is fixedly arranged in the countersunk head groove. An end cover is further included and detachably arranged on the supporting frame, and the end cover is used for limiting the mounting base in the countersunk groove. The sealing ring is arranged between the end cover and the mounting base and aims at solving the problems that in the prior art, the occupied space is large, and surgical operation is affected, the surgical instrument comprises a supporting frame and a light reflecting part, the light reflecting part comprises a first spherical segment, and the first spherical segment is arranged on the outer side of the supporting frame.

Description

Technical Field

[0001] The utility model belongs to medical devices, and particularly relates to a tracer. Background Art

[0002] The optical tracer is one of the core components of the optical navigation system. It is usually fixed on the object to be tracked to indicate the spatial position of the object. In computer navigation-assisted orthopedic surgery, the optical tracer needs to be fixed on the lesion of the patient or the end of the surgical robot with the help of a fixing device.

[0003] In the prior art, the tracer includes a mounting bracket and a tracer ball. The tracer ball is fixedly arranged on the mounting bracket. The overall structure of the tracer ball is spherical, and the surface of the tracer ball is smooth and has a good reflective effect, so that the navigation camera can quickly identify and locate the position of the tracer ball.

[0004] During orthopedic surgery, the overall structure of the tracer will affect the surgical operation space. However, the prior art is not perfect, and the existing tracer has the problem of large overall occupied space, and it is impossible to well ensure the surgical operation space. Content of the Utility Model

[0005] To overcome the deficiencies and problems in the prior art, the utility model provides a tracer.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] A tracer, comprising a support frame and a reflective member. The reflective member includes a first spherical segment, and the first spherical segment is arranged outside the support frame.

[0008] Preferably, the reflective member further includes a mounting seat, the support frame includes a countersunk head groove, and the mounting seat is fixedly arranged in the countersunk head groove.

[0009] Preferably, the support frame further includes a through hole, and the first spherical segment extends outside the support frame through the through hole.

[0010] Preferably, it further includes an end cover, and the end cover is detachably arranged on the support frame. The end cover is used to limit the mounting seat in the countersunk head groove.

[0011] Preferably, the end cover is threadedly connected in the countersunk head groove.

[0012] Preferably, the overall structure of the mounting seat is annular, and the end cover includes a retaining ring, and the retaining ring presses the mounting seat in the countersunk head groove.

[0013] Preferably, it further includes a sealing ring, and the sealing ring is arranged between the end cover and the mounting seat.

[0014] Preferably, the reflective member further includes a second spherical segment, and the radius of the second spherical segment is greater than that of the first spherical segment.

[0015] Preferably, the bottom surface of the first spherical segment faces the bottom surface of the second spherical segment.

[0016] Preferably, the support frame includes a central seat and connecting rods. There are at least three connecting rods, and more than three connecting rods are sequentially and fixedly arranged on the circumference of the central seat. Reflective members are arranged on more than three connecting rods.

[0017] The prominent and beneficial technical effects of the present utility model compared with the prior art are:

[0018] In the present utility model, the first spherical segment is used for tracing. The shape of the first spherical segment reduces the occupied space of the tracer, reduces the influence of the tracer on the surgical operation space, and ensures the light reflection effect, avoiding the problem of reduced position accuracy when tracing the present tracer. Therefore, the present tracer has the advantages of simple structure, small occupied space, and high tracing accuracy. Description of the Drawings

[0019] Figure 1 is the three-dimensional structural schematic diagram of the present utility model;

[0020] Figure 2 is the cross-sectional structural schematic diagram of the present utility model;

[0021] Figure 3 is the Figure 2 partial enlarged structural schematic diagram at "A" in the present utility model;

[0022] Figure 4 is the exploded structural schematic diagram of the present utility model;

[0023] In the figure: 1 - support frame, 2 - reflective member, 3 - end cap, 4 - sealing ring, 11 - central seat, 12 - connecting rod, 21 - first spherical segment, 22 - mounting seat, 23 - second spherical segment, 31 - retaining ring, 121 - countersunk head groove, 122 - through hole. Detailed Embodiments

[0024] For the convenience of understanding by those skilled in the art, the present utility model will be further described below in conjunction with the drawings and specific embodiments.

[0025] As Figures 1 to 4 shown, a tracer includes a support frame 1 and a reflective member 2. The reflective member 2 includes a first spherical segment 21, and the first spherical segment 21 is arranged on the outside of the support frame 1.

[0026] The overall structure of the first spherical segment 21 is in the shape of a spherical segment, which is a part of a sphere cut off by a plane. The spherical crown surface of the first spherical segment 21 is used for reflecting light, and the spherical crown surface of the first spherical segment 21 has the advantages of smooth surface and high reflectivity.

[0027] In actual use, the support frame 1 can be installed near the patient's lesion or near the end of the surgical robot. The navigation camera emits light (the light can be infrared light) onto the light reflector 2, and the light reflector 2 can reflect the light and be received by the navigation camera, so that the navigation camera can determine the position of the patient's lesion or the position of the end of the surgical robot.

[0028] In the present utility model, the first spherical segment 21 is used for tracing. The shape of the first spherical segment 21 reduces the occupied space of the tracer, reduces the influence of the tracer on the surgical operation space, and ensures the light reflection effect, avoiding the problem of reduced position accuracy when tracing the present tracer. Therefore, the present tracer has the advantages of simple structure, small occupied space, and high tracing accuracy.

[0029] The light reflector 2 further includes a mounting seat 22, and the support frame 1 includes a countersunk head groove 121. The mounting seat 22 is fixedly arranged in the countersunk head groove 121. The mounting seat 22 is used to limit the light reflector 2 on the support frame 1, thereby improving the connection firmness between the support frame 1 and the light reflector 2. Moreover, the mounting seat 22 is arranged in the countersunk head groove 121, further improving the compactness of the structure.

[0030] The support frame 1 further includes a through hole 122. The first spherical segment 21 extends out of the support frame 1 through the through hole 122. The through hole 122 is arranged at one end of the countersunk head groove 121, and the through hole 122 communicates with the countersunk head groove 121. The design of the through hole 122 realizes that the first spherical segment 21 of the light reflector 2 is located outside the support frame 1, and the mounting seat 22 of the light reflector 2 is located inside the support frame 1.

[0031] The present tracer further includes an end cap 3. The end cap 3 is detachably arranged on the support frame 1. The end cap 3 is used to limit the mounting seat 22 in the countersunk head groove 121. The detachable connection method between the end cap 3 and the support frame 1 can be threaded connection, snap connection, interference fit, etc.

[0032] In actual use, when the end cap 3 is disassembled from the support frame 1, the mounting seat 22 can be taken out of the countersunk head groove 121, so that the light reflector 2 can be removed from the support frame 1. Therefore, it is convenient to disassemble the light reflector 2 and the support frame 1. Since the light reflector 2 is a high-precision optical device, and before the tracer is used for surgery, it needs to be sterilized. The light reflector 2 cannot be sterilized by high-temperature sterilization. By disassembling the light reflector 2 and the support frame 1, the support frame 1 and the end cap 3 can be sterilized by high-temperature sterilization, and the light reflector 2 can be sterilized by other methods.

[0033] The end cap 3 is threadedly connected in the countersunk head groove 121. An external thread (not shown in the figure) is provided on the outer side wall of the end cap 3, and an internal thread (not shown in the figure) is formed on the inner side wall of the countersunk head groove 121. The external thread is threadedly connected to the internal thread, facilitating the user to disassemble and assemble by hand.

[0034] The overall structure of the mounting seat 22 is annular. The end cap 3 includes a retaining ring 31. The retaining ring 31 presses the mounting seat 22 in the countersunk head groove 121. The overall structure of the retaining ring 31 is also annular. The retaining ring 31 presses the mounting seat 22 in all directions, further improving the limiting effect of the end cap 3 on the mounting seat 22.

[0035] This tracer further includes a sealing ring 4. The sealing ring 4 is arranged between the end cap 3 and the mounting seat 22. The sealing ring 4 is used to prevent the end cap 3 and the mounting seat 22 from directly contacting each other, avoiding the problem of wear between the end cap 3 and the mounting seat 22. The sealing ring 4 is made of an elastic material, and the elastic material can be rubber. The sealing ring 4 also plays a sealing role between the end cap 3 and the mounting seat 22.

[0036] The reflective member 2 further includes a second spherical segment 23. The radius of the second spherical segment 23 is greater than the radius of the first spherical segment 21. The spherical crown surface area of the second spherical segment 23 is larger than the spherical crown surface area of the first spherical segment 21. The second spherical segment 23 is arranged in the countersunk head groove 121. In actual use, when the end cap 3 is removed, the second spherical segment 23 can be arranged outside the support frame 1, and the first spherical segment 21 can be arranged in the countersunk head groove 121. The second spherical segment 23 can also be used for tracing the patient's lesion or the end of the surgical robot. Moreover, the radii of the first spherical segment 21 and the second spherical segment 23 are different to facilitate adapting to the tracing requirements of different surgeries.

[0037] The mounting seat 22 is arranged between the first spherical segment 21 and the second spherical segment 23. The bottom surface of the first spherical segment 21 faces the bottom surface of the second spherical segment 23, facilitating the front or reverse installation of the reflective member 2 on the support frame 1.

[0038] The support frame 1 includes a central seat 11 and connecting rods 12. There are at least three connecting rods 12. More than three connecting rods 12 are sequentially and fixedly arranged on the circumference of the central seat 11. Reflective members 2 are arranged on all of the more than three connecting rods 12. There are also at least three reflective members 2. More than three reflective members 2 form a tracing surface, further improving the accuracy of tracing and positioning. The reflective members 2 are all arranged at one end of the connecting rods 12, and the other ends of the connecting rods 12 are integrally formed on the side surface of the central seat 11.

[0039] The above embodiments are only the preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A tracer, characterized in that, It includes a support frame (1) and a reflector (2). The reflector (2) includes a first spherical segment (21), and the first spherical segment (21) is arranged outside the support frame (1). The reflector (2) further includes a mounting seat (22). The support frame (1) includes a countersunk head groove (121), and the mounting seat (22) is fixedly arranged in the countersunk head groove (121). It further includes an end cover (3). The end cover (3) is detachably arranged on the support frame (1), and the end cover (3) is used to limit the mounting seat (22) in the countersunk head groove (121). It further includes a sealing ring (4), and the sealing ring (4) is arranged between the end cover (3) and the mounting seat (22).

2. A tracer according to claim 1, characterized in that, The support frame (1) further includes a through hole (122), and the first spherical segment (21) extends outside the support frame (1) through the through hole (122).

3. A tracer according to claim 1, characterized in that, The overall structure of the mounting seat (22) is annular. The end cover (3) includes a retaining ring (31), and the retaining ring (31) presses the mounting seat (22) in the countersunk head groove (121).

4. A tracer according to claim 1, characterized in that, The end cover (3) is threadedly connected in the countersunk head groove (121).

5. A tracer according to claim 1, wherein The reflector (2) further includes a second spherical segment (23), and the radius of the second spherical segment (23) is greater than the radius of the first spherical segment (21).

6. A tracer according to claim 5, characterized in that, The bottom surface of the first spherical segment (21) faces the bottom surface of the second spherical segment (23).

7. A tracer according to claim 1, characterized in that, The support frame (1) includes a central seat (11) and connecting rods (12). There are at least three connecting rods (12). More than three connecting rods (12) are sequentially and fixedly arranged on the circumference of the central seat (11), and reflectors (2) are arranged on all of the more than three connecting rods (12).

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