Reference frame of combined calibration instrument

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a reference frame of a combined calibration instrument, which is mainly used for being combined with the calibration instrument for calibrating a nail hole of an intramedullary nail so that the calibration instrument can be identified by a navigation system. A reference frame capable of being connected with a calibration instrument is arranged; the support arms are connected with the reference frame main body part; the plurality of small optical balls are connected with the plurality of support arms, and each support arm is connected with one small optical ball; after the main body part is connected with the calibration instrument, the calibration instrument is identified by the navigation system through the plurality of optical small balls; the problems that most existing reference frames are directly arranged in an operation area of a patient or on an operation instrument, and structural components of the existing reference frames are difficult to be matched with a calibration instrument are mainly solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a reference frame for a combined calibration equipment. Background Art

[0002] The existing technology has used navigation systems in various medical surgery scenarios, and the current navigation systems mostly complete surgical navigation through NDI balls and corresponding recognition systems. The current NDI balls are mostly set on a reference frame, and then the reference frame is combined with the corresponding surgical instruments. The navigation system identifies and tracks the spatial position of the NDI balls on the reference frame to achieve tracking of the surgical instruments, surgical paths, surgical directions, etc.

[0003] When the intramedullary nail is in use, it is necessary to first calibrate the distal nail holes under the navigation system so that the positions of the nail holes are determined with the positions of the operating reference frames to which they are connected; therefore, a calibration instrument is required to calibrate the nail holes, but the existing calibration instrument needs to be connected to the calibration reference frame before it can be recognized by the navigation system, and then the nail holes of the intramedullary nail are calibrated; and the existing reference frames are mostly reference frames directly placed on the patient's surgical area or on the operating instruments, and their structural components are difficult to adapt to the calibration instrument.

[0004] In view of the above problems, the utility model provides a reference frame for a combined calibration device. Utility Model Content

[0005] In order to overcome the problems raised in the background technology, the utility model adopts the following technical solutions:

[0006] A reference frame for a combined calibration instrument, comprising:

[0007] A reference frame comprises: a main body portion configured to be connectable to a calibration instrument; and

[0008] A plurality of arms, wherein the plurality of arms are connected to the main body;

[0009] A plurality of optical balls are connected to a plurality of the supporting arms, and each supporting arm is connected to at least one optical ball; after the main body is connected to the calibration device, the calibration device is identified by the navigation system through the plurality of optical balls.

[0010] In some embodiments of the present application, the main body portion is integrally connected to a plurality of the arms.

[0011] In some embodiments of the present application, the main body portion has a bottom end surface and a top end surface opposite to each other, wherein a connector is formed on the bottom end surface, and a slot is provided on the top end surface in the direction of the connector.

[0012] Furthermore, the connector is arranged along the length extension direction of the top end surface, wherein the slot does not penetrate the connector.

[0013] Furthermore, the outer wall of the connector is provided with a plurality of holes communicating with the slots.

[0014] In some embodiments of the present application, the main body portion further has a weight-reducing groove, wherein the weight-reducing groove penetrates the main body portion.

[0015] Furthermore, the number of the weight-reducing grooves is at least two, wherein the two weight-reducing grooves are symmetrically arranged on the main body portion.

[0016] In some embodiments of the present application, several of the arms have: a connecting post, wherein the optical ball is threadedly connected to the connecting post.

[0017] Furthermore, the connecting column is perpendicular to the top end surface of the main body portion.

[0018] Furthermore, the number of the supporting arms is at least four.

[0019] Beneficial effects of the utility model:

[0020] By setting a card slot, the main body is connected to the calibration device so that the calibration device can be recognized by the navigation system; at the same time, a number of channels connected to the card slot are opened through the outer wall of the connector, which can prevent the main body from being disconnected from the calibration device and prevent shaking after the main body is connected to the calibration device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the connection between the reference frame and the calibration device of the utility model;

[0022] Figure 2 This is a schematic diagram of the state structure of the reference frame of the utility model;

[0023] Figure 3 It is a schematic diagram of the structure of the main part of the utility model;

[0024] Figure 4 This is a schematic diagram of the card slot structure of the utility model;

[0025] Figure 5 This is a schematic diagram of the reference frame structure of the utility model;

[0026] Figure 6 This is a schematic diagram of the connector structure of the utility model;

[0027] In the figure, 1. main body; 11. connector; 12. slot; 13. hole; 14. weight reduction slot; 15. first groove portion; 16. second groove portion; 2. support arm; 21. connecting column; 23. optical sphere; 3. calibration instrument; 31. intramedullary nail; 32. operation reference frame. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model are clearly and completely described below through specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Those skilled in the art can easily understand other advantages and functions of the utility model from the contents disclosed in this specification. The utility model can also be implemented or applied through other different specific implementation methods. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Figure 1 —3 shows the main technical content of this embodiment. This specific embodiment provides a reference frame for a joint calibration instrument, which includes:

[0030] The reference frame comprises: a main body 1, wherein the main body 1 is configured to be connectable to a calibration device 3; and

[0031] A plurality of supporting arms 2, wherein the plurality of supporting arms 2 are connected to the main body 1;

[0032] A plurality of optical balls 23 are connected to a plurality of arms, and each arm 2 is connected to at least one optical ball 23; after the main body 1 is connected to the calibration device 3, the calibration device 3 is identified by the navigation system through the plurality of optical balls 23.

[0033] refer to Figure 2 —3. In the present embodiment, the main body 1 is integrally connected with a plurality of supporting arms 2, wherein the main body 1 and the supporting arms 2 are made of rigid materials, such as stainless steel, hard plastic (polytetrafluoroethylene (PTFE), polyoxymethylene (POM)), ceramics, and the like.

[0034] In other embodiments (not shown), the main body 1 and the plurality of arms 2 may also be fixedly connected, wherein the connection may be performed by bonding / welding.

[0035] refer to Figure 1—3. In the present embodiment, the main body 1 has a bottom end face and a top end face which are opposite to each other, wherein the bottom end face is provided with a connector 11; and a slot 12 is provided on the top end face in the direction of the connector 11; more specifically, the main body 1 is shaped as a rectangular plate, the connector 11 is arranged along the length extension direction of the bottom end face, and the slot 12 does not penetrate the connector 11. More preferably, the connector 11 is located in the middle position of the bottom end face, and the slot 12 is provided on the top end face of the main body 1 vertically in the direction of the connector 11, so that the connector 11 presents a "U" shape. When in use, the main body 1 is connected to the calibration device 3 through the slot 12, so that the calibration device 3 is recognized by the navigation system through the optical balls 23 on each arm 2, and the spatial posture of the calibration device 3 is calculated according to the spatial posture of each optical ball 23, so that the calibration device 3 can calibrate the nail hole of the intramedullary nail 31.

[0036] refer to Figure 1 —4. More specifically, the outer wall of the connector 11 is provided with a plurality of holes 13 communicating with the slots 12. After the main body 1 is connected to the calibration device 3 through the slots 12, each hole 13 corresponds to a through hole arranged on the calibration device 3, and then rivets or bolts and nuts are used to completely fix the main body 1 on the calibration device 3, so that the main body 1 is tightly connected to the calibration device 3; thereby preventing the main body 1 from shaking during use.

[0037] More specifically, six holes 13 are provided, wherein the connecting body 11 has a first side and a second side opposite to each other, the six holes 13 are evenly distributed to the first side and the second side, and the holes 13 on the first side and the holes 13 on the second side are opposite to each other.

[0038] refer to Figure 2 —3. In the present embodiment, the main body 1 further has a weight-reducing groove 14, wherein the weight-reducing groove 14 does not overlap with the connector 11, and the weight-reducing groove 14 passes through the main body 1. More specifically, the weight-reducing groove 14 is provided in at least two numbers. Preferably, the weight-reducing groove 14 is provided in two numbers, wherein the two weight-reducing grooves 14 are symmetrically provided on the main body 1, and the card slot 12 is located between the two weight-reducing grooves 14. Through this arrangement, the weight of the reference frame is reduced, and when used in conjunction with the calibration device 3, the calibration device 3 is made easier to operate to a certain extent.

[0039] refer to Figure 2—6. In the present embodiment, the main body 1 further comprises a first groove portion 15 and a second groove portion 16, wherein the first groove portion 15 and the second groove portion 16 are mirror-imaged to each other, and the slot 12 is located between the first groove portion 15 and the second groove portion 16. More specifically, the first groove portion 15 extends from the first side of the connector 11 in the direction of the slot 12, and the second groove portion 16 extends from the second side of the connector 11 in the direction of the slot 12, so that after the main body 1 is connected to the calibration instrument 3, at least one of the parts on the calibration instrument 3 for calibrating the intramedullary nail 31 can be axially moved through the first groove portion 15 and the second groove portion 16.

[0040] refer to Figure 3 —4. In the present embodiment, several arms all have: a connecting column 21, wherein the optical ball 23 is threadedly connected to the connecting column 21. More specifically, the outer wall of the connecting column 21 is provided with an external thread, and the optical ball 23 is provided with a threaded hole, wherein the optical ball 23 is screwed onto the connecting column 21 through the threaded hole.

[0041] More specifically, the depth of the threaded hole is 2 / 3 of the connecting post 21 , so that after each optical ball 23 is connected to the connecting post 21 , there is a certain distance between the optical ball 23 and the main body 1 .

[0042] More specifically, the connection column 21 and the support arm 2 are in a vertical relationship, wherein each optical ball 23 is located on one side of the top end surface of the main body 1 .

[0043] refer to Figure 3 —4. In the present embodiment, at least four arms 2 are provided, and the number of the optical balls 23 is the same as the number of the arms 2; more specifically, four arms 2 are provided, each arm 2 has an upper side surface, and the upper side surface of each arm 2 coincides with the top end surface of the main body 1, wherein each connecting column 21 is arranged on the upper side surface of each arm 2; more preferably, the connecting columns 21 on the four arms 2 form a quadrilateral after being connected in sequence, and the lengths of two adjacent sides of the quadrilateral are not equal, and the degrees of each internal angle of the quadrilateral are also different.

[0044] In addition, it should be noted that the intramedullary nail currently used in clinical practice has several nail holes at the distal end, and the proximal end of the intramedullary nail is connected to an operating reference frame, wherein the reference frame in the present application and the operating reference frame connected to the intramedullary nail are both reference frames adapted for the optical navigation system. When in use, the reference frame of the present application is connected to a calibration device so that the calibration device can be recognized by the navigation system, and then the various nail holes of the intramedullary nail are calibrated by the calibration device that is recognized and carries the reference frame of the present application, so as to determine the positional relationship between each nail hole and the operating reference frame.

[0045] The use of the utility model:

[0046] 1. Connect the main body and each arm connected to the main body to the calibration device through the card slot, so that the calibration device can be recognized by the navigation system;

[0047] 2. By using rivets to penetrate into the hole on the first side and then pass out from the corresponding hole on the second side, the main body is tightly connected to the calibration device, and then the navigation system is used to identify each optical ball to calculate the spatial position of the calibration device;

[0048] 3. Then use a calibration instrument with a reference frame to calibrate each nail hole of the intramedullary nail.

[0049] The above-mentioned embodiments are only used to understand the present invention. It should be noted that, for those skilled in the art, several improvements can be made to the present invention without departing from the principle of the present invention, and these improvements will also fall within the scope of protection of the claims of the present invention.

Claims

1. A reference frame for a combined calibration instrument, characterized in that: It includes: A reference frame comprises: a main body portion configured to be connectable to a calibration instrument; and A plurality of arms, wherein the plurality of arms are connected to the main body; A plurality of optical balls, wherein the plurality of optical balls are connected to a plurality of the supporting arms, and each supporting arm is connected to at least one optical ball; after the main body is connected to the calibration device, the calibration device is identified by the navigation system through the plurality of optical balls; The main body part has a bottom end face and a top end face opposite to each other, wherein the main body part also has a connector disposed on the bottom end face and a slot opened on the top end face in the direction of the connector; The outer wall of the connector is provided with a plurality of holes communicating with the slots; The main body portion also has a weight-reducing groove, wherein the weight-reducing groove penetrates the main body portion.

2. The reference frame of the combined calibration device according to claim 1, characterized in that: The main body part is integrally connected with a plurality of the supporting arms.

3. The reference frame of the combined calibration device according to claim 1, characterized in that: The connector is arranged along the length extension direction of the top end surface, and the slot does not penetrate the connector.

4. The reference frame of the combined calibration device according to claim 1, characterized in that: The number of the weight-reducing grooves is two, wherein the two weight-reducing grooves are symmetrically arranged on the main body portion.

5. The reference frame of the combined calibration device according to claim 1, characterized in that: Several of the supporting arms all have a connecting post, wherein the optical ball is threadedly connected to the connecting post.

6. The reference frame of the combined calibration device according to claim 5, characterized in that: The connecting column is perpendicular to the top end surface of the main body portion.

7. The reference frame of the combined calibration device according to claim 6, characterized in that: At least four supporting arms are provided.

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