A reference frame for a stereo tracking navigation device

Abstract

This utility model belongs to the field of medical device technology, specifically relating to a reference frame for a three-dimensional tracking navigation device. It mainly includes: a socket with an internal space and an opening formed from the outer wall of the socket towards the internal space; a first joint and a second joint on both sides of the opening; a frame connected to the socket; and a fastener connected to the first and second joints, wherein the fastener has a first rotation direction and a second rotation direction. When the fastener rotates in the first rotation direction, the first and second joints move closer together, reducing the width of the opening and thus closing the internal space; when the fastener rotates in the second rotation direction, the first and second joints move further apart, increasing the width of the opening and thus expanding the internal space.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a reference frame for a three-dimensional tracking and navigation device. Background Technology

[0002] In orthopedic surgery, instruments such as ultrasonic bone scalpels and oscillating saws are commonly used osteotomy instruments. When used, they can provide extremely high cutting precision, allowing surgeons to more accurately handle bone tissue in the target area while minimizing damage to surrounding soft tissues. However, during surgery, doctors often control the range of motion of ultrasonic bone scalpels and oscillating saws based on their own experience. For example, the cutting range, angle, incision angle, and force must be carefully controlled. If the control is incorrect, it may result in the loss of more unnecessary bone, or even cut into tissues outside the preset angle, damaging surrounding vital organs and causing irreversible damage to the patient, or even endangering their life.

[0003] Therefore, navigation systems have been introduced into clinical practice to assist surgeons in osteotomy procedures. This allows for preoperative planning of the surgical path and real-time tracking of surgical instruments during the operation, improving the precision of osteotomy. Before the operation, the tracked instruments (such as optical reference frames) are combined with instruments such as ultrasonic bone scalpels and oscillating saws to locate the spatial orientation of the surgical instruments in real time. Visualized operation increases the safety and accuracy of osteotomy and fenestration. However, since instruments such as ultrasonic bone scalpels and oscillating saws are disposable, while the tracked instruments connected to the surgical instruments are reusable, how to connect the tracked instruments to the surgical instruments is an urgent problem to be solved.

[0004] To address the aforementioned problems, this utility model provides a reference frame for a three-dimensional tracking navigation device. Utility Model Content

[0005] To overcome the problems mentioned in the background art, the present invention adopts the following technical solution: a reference frame for a three-dimensional tracking navigation device, comprising: a socket having an internal space and an opening formed from the outer wall of the socket toward the internal space, wherein a first joint and a second joint are provided on both sides of the opening; a frame connected to the socket; and a fastener connected to the first joint and the second joint, wherein the fastener has a first rotation direction and a second rotation direction; wherein, when the fastener rotates in the first rotation direction, the first joint and the second joint move closer to each other, thereby reducing the width of the opening and thus closing the internal space; when the fastener rotates in the second rotation direction, the first joint and the second joint move away from each other, thereby increasing the width of the opening and thus expanding the internal space.

[0006] In some embodiments of this application, the first joint portion and the second joint portion are mirror images of each other.

[0007] In some embodiments of this application, the first joint includes a first joint plate, and the second joint includes a second joint plate, wherein the fastener passes through the first joint plate and the second joint plate, and when the fastener rotates in the first rotation direction, it drives the first joint plate and the second joint plate to move closer to each other.

[0008] Furthermore, both the first connecting plate and the second connecting plate are fixedly connected to the sleeve.

[0009] In some embodiments of this application, the socket has an axis, and in the direction of extension of the axis, the socket has a first end and a second end, wherein the inner wall of the socket is provided with a flange, one side of which coincides with the first end or the second end.

[0010] In some embodiments of this application, the inner wall of the socket is further provided with a fixing groove, wherein the length extension direction of the fixing groove is the same as the axial extension direction of the socket.

[0011] In some embodiments of this application, the fastener includes a bolt and a nut, with one end of the bolt passing through a first connecting plate and a second connecting plate in sequence, and the nut being screwed onto the bolt from the end of the bolt near the second connecting plate.

[0012] Furthermore, the outer wall of the socket is provided with several threaded holes, which are connected to the internal space of the socket.

[0013] In some embodiments of this application, the frame includes: a first frame and a second frame; a first connecting rod and a second connecting rod, wherein the first connecting rod is used to connect the first frame to the outer wall of the socket, and the second connecting rod is used to connect the second frame to the outer wall of the socket.

[0014] Furthermore, the axes of the first connecting rod and the second connecting rod are both perpendicular to the axis of the sleeve, and the axis of the first connecting rod is perpendicular to the axis of the second connecting rod.

[0015] The beneficial effects of this utility model are: 1. By setting up sockets, fasteners and frame, the frame is combined with ultrasonic bone scalpel or oscillating saw through the sockets and fasteners during use. This allows the length and width of the ultrasonic bone scalpel or oscillating saw to be calibrated under the navigation system. Visual real-time operation navigation is achieved through the display screen / AR glasses. The direction and depth of the surgical instruments during osteotomy are adjusted according to the visual guide line, so as to perform complex osteotomy and deep osteotomy with high precision and safety. 2. By setting fasteners, this instrument can be repeatedly disassembled and reassembled with the ultrasonic bone scalpel or oscillating saw, so that one instrument can be used with different new ultrasonic bone scalpels or oscillating saws of the same type, thereby reducing the number of instruments used and thus reducing the medical burden on patients. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the socket structure of this utility model; Figure 3 This is a schematic diagram of the fastener structure of this utility model; Figure 4 This is a schematic diagram of the structure of the first joint and the second joint of this utility model; Figure 5 This is a schematic diagram of the opening position structure of this utility model; Figure 6 This is a schematic diagram of the cross-sectional structure of the socket of this utility model; Figure 7 This is a schematic diagram of the frame structure of this utility model; In the figure, 1 is the socket; 11 is the opening; 12 is the first joint; 13 is the second joint; 131 is the countersunk hole; 14 is the fixing groove; 15 is the threaded hole; 2 is the fastener; 21 is the bolt; 22 is the nut; 3 is the first frame; 4 is the second frame; 5 is the reflector. Detailed Implementation

[0017] The technical solutions of this utility model are clearly and completely described below through specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] Figure 1—2 illustrates the main technical content of this embodiment. This specific embodiment provides a reference frame for a three-dimensional tracking navigation device, which includes: a socket 1, the socket 1 having an internal space, and an opening 11 formed from the outer wall of the socket 1 toward the internal space, wherein a first joint 12 and a second joint 13 are provided on both sides of the opening 11; a frame body, connected to the socket 1; and a fastener 2, the fastener 2 being connected to the first joint 12 and the second joint 13, wherein the fastener 2 has a first rotation direction and a second rotation direction; wherein, when the fastener 2 rotates in the first rotation direction, the first joint 12 and the second joint 13 move closer to each other, so that the width of the opening 11 is reduced, thereby causing the internal space to shrink; when the fastener 2 rotates in the second rotation direction, the first joint 12 and the second joint 13 move further apart, so that the width of the opening 11 is increased, thereby causing the internal space to expand.

[0019] In use, the connector 1 is fitted onto the tail end of the ultrasonic bone scalpel or oscillating saw. At this time, the ultrasonic bone scalpel or oscillating saw is located in the internal space of the connector 1. Then, the fastener 2 is rotated in the first rotation direction. At this time, driven by the fastener 2, the first joint 12 and the second joint 13 move closer to each other, reducing the area of ​​the internal space of the connector 1. This allows the inner wall of the connector 1 to form a tight connection with the outer wall of the surgical instrument. Then, the instrument is calibrated through an optical navigation surgical system, thereby recording the length, shape, and spatial position of the surgical instrument in a virtual coordinate system. Visual real-time operation navigation is achieved through a display screen / AR glasses. The direction and depth of the surgical instrument during osteotomy are adjusted according to the visual guide line, enabling precise and safe complex and deep osteotomy. The operation is simple and safe, reducing the risk of intraoperative bleeding and damage to important tissues and organs. After the operation, the fastener 2 is rotated in the second rotation direction, causing the first joint 12 and the second joint 13 to move away from each other. At this time, the connector 1 can be detached from the surgical instrument.

[0020] refer to Figure 1 —3. In this embodiment, the first joint 12 and the second joint 13 are mirror images of each other. After the sleeve 1 is put on the surgical instrument, the first joint 12 and the second joint 13 are brought closer to each other by rotating the fastener 2, thereby closing the internal space of the sleeve 1, so that the sleeve 1 and the surgical instrument are connected.

[0021] refer to Figure 2Specifically, the first joint 12 includes a first joint plate, and the second connecting part includes a second joint plate, wherein the fastener 2 passes through the first joint plate and the second joint plate, and when the fastener 2 rotates in a first rotation direction, it drives the first joint plate and the second joint plate to move closer to each other; preferably, both the first joint plate and the second joint plate have through holes, wherein the fastener 2 passes through the two through holes, thereby driving the first joint plate and the second joint plate to move closer to each other when rotating.

[0022] More preferably, both the first connecting plate and the second connecting plate are fixedly connected to the sleeve 1, such as by welding or integral molding, with integral molding being the preferred method.

[0023] refer to Figure 1 In this embodiment, the sleeve 1 is cylindrical in shape. In the axial extension direction of the sleeve 1, the sleeve 1 has a first end and a second end. The inner wall of the sleeve 1 is provided with a flange. One side of the flange coincides with the first end or the second end of the sleeve 1. After the sleeve 1 is sleeved on the tail end of the ultrasonic bone scalpel or the oscillating saw, the flange prevents the sleeve 1 from moving axially, thereby ensuring the accuracy of surgical navigation.

[0024] refer to Figure 1 and Figure 4 As will be understood by those skilled in the art, in order to make the internal space of the socket 1 match the shape of the ultrasonic bone scalpel body and the shape of the oscillating saw body, in this embodiment, the inner wall of the socket 1 is also provided with a fixing groove 14, wherein the length extension direction of the fixing groove 14 is the same as the axial extension direction of the socket 1. In use, after the socket 1 is assembled on the tail end of the ultrasonic bone scalpel or the oscillating saw, the fixing groove 14 can match the shape of the tail end of the ultrasonic bone scalpel or the oscillating saw, so that a part of the ultrasonic bone scalpel or the oscillating saw enters into the fixing groove 14, and can also prevent the socket 1 from rotating relative to the ultrasonic bone scalpel or the oscillating saw and other surgical instruments, thereby ensuring the stability of the frame during the operation.

[0025] refer to Figure 2 —3 and Figure 4—6. In this embodiment, the fastener 2 includes a bolt 21 and a nut 22. One end of the bolt 21 passes through the first connecting plate and the second connecting plate in sequence. The nut 22 is screwed onto the bolt 21 from the end of the bolt 21 that is close to the second connecting plate. In use, by rotating the bolt 21 in the first rotation direction, the bolt 21 moves towards the second connecting plate and abuts against the first connecting plate under the cooperation of the bolt 21 and the nut 22. As the bolt 21 rotates continuously, the first connecting plate and the second connecting plate move closer to each other, thereby causing the width of the opening 11 of the sleeve 1 to continuously shrink and the internal space of the sleeve 1 to continuously shrink until the inner wall of the sleeve 1 forms a tight connection with the outer wall of the ultrasonic bone scalpel or the oscillating saw.

[0026] For explanation, the first rotation direction is clockwise, and the second rotation direction is counterclockwise.

[0027] Preferably, the side of the second connecting plate opposite to the first connecting plate has a countersunk hole 131, in which the nut 22 is installed.

[0028] refer to Figure 5 Preferably, the outer wall of the sleeve 1 is also provided with a number of threaded holes 15, wherein the threaded holes 15 are connected to the internal space of the sleeve 1. After the sleeve 1 is connected to the ultrasonic bone scalpel or the oscillating saw, a suitable bolt is screwed into the threaded hole 15 to abut against the outer wall of the surgical instrument, thereby further enhancing the fixing effect of the sleeve 1 and thus further enhancing the stability of the frame.

[0029] refer to Figure 7 In this embodiment, the frame includes: a first frame 3, a second frame 4, a first connecting rod, and a second connecting rod. The first connecting rod is used to connect the first frame 3 to the outer wall of the sleeve 1, and the second connecting rod is used to connect the second frame 4 to the outer wall of the sleeve 1. The axes of the first connecting rod and the second connecting rod are both perpendicular to the axis of the sleeve 1, and the axis of the first connecting rod is perpendicular to the axis of the second connecting rod. By setting the first frame 3 and the second frame 4 to be perpendicular to each other, after the sleeve 1 is connected to the ultrasonic bone scalpel or oscillating saw, the surgical instruments can be identified by the navigation system from multiple directions during the operation, so as to obtain the length, width, and spatial position of the surgical instruments in real time. This is beneficial for the surgeon to adjust the orientation of the surgical instruments in real time during the operation, which is convenient for performing complex osteotomies and precise osteotomies.

[0030] refer to Figure 7As an explanation, the navigation system involved in this device is an optical navigation system. Therefore, both the first frame 3 and the second frame 4 are equipped with a number of reflective balls 5 (NDI optical balls). The optical navigation system identifies the reflective balls 5 to mark the length and width of the surgical instruments and to track the spatial pose of the surgical instruments in real time. More preferably, the first frame 3 has 4 reflective balls 5 and the second frame 4 has 3 reflective balls 5.

[0031] How to use this utility model: 1. The connector is fitted onto the tail end of the ultrasonic bone scalpel or oscillating saw. At this time, the ultrasonic bone scalpel or oscillating saw is located in the internal space of the connector. Then, the fastener is rotated in the first rotation direction. At this time, under the drive of the fastener, the first joint and the second joint come closer to each other, which reduces the area of ​​the internal space of the connector, thereby making the inner wall of the connector and the outer wall of the surgical instrument form a tight connection. 2. Then, the reflective ball on the frame is identified by the optical navigation surgical system to calibrate the instruments. The length, shape and spatial position of the surgical instruments are recorded in the virtual coordinate system. Visual real-time operation navigation is realized through the display screen / AR glasses. The direction and depth of the surgical instruments during osteotomy are adjusted according to the visual guide line. 3. After the operation, rotate the fastener in the second rotation direction to move the first joint and the second joint away from each other, and then remove the socket from the surgical instrument. The socket and frame are then ready for use.

[0032] The above description of the embodiments is only for understanding the present invention. It should be noted that those skilled in the art can make several improvements to the present invention without departing from the principle of the present invention, and these improvements will also fall within the protection scope of the claims of the present invention.

Claims

1. A reference frame for a stereotactic navigation instrument, comprising: It includes sockets. The socket has an internal space and an opening is formed from the outer wall of the socket toward the internal space, wherein a first joint portion and a second joint portion are provided on both sides of the opening. The frame is connected to the socket. A fastener, the fastener being connected to the first joint and the second joint, wherein the fastener has a first rotation direction and a second rotation direction; When the fastener rotates in the first rotation direction, the first joint and the second joint move closer to each other, thereby reducing the width of the opening and thus closing the internal space; when the fastener rotates in the second rotation direction, the first joint and the second joint move further apart, thereby increasing the width of the opening and thus expanding the internal space.

2. The reference frame for stereotactic navigation of an instrument according to claim 1, wherein, The first joint and the second joint are mirror images of each other.

3. The reference frame for stereotactic navigation of an instrument according to claim 1, wherein, The first joint includes a first joint plate, and the second joint includes a second joint plate, wherein the fastener passes through the first joint plate and the second joint plate, and when the fastener rotates in the first rotation direction, it drives the first joint plate and the second joint plate to move closer to each other.

4. The reference frame for stereotactic navigation of an instrument according to claim 3, wherein, Both the first connecting plate and the second connecting plate are fixedly connected to the sleeve.

5. The reference frame for stereotactic navigation of an instrument according to claim 1, wherein, The socket has an axis, and in the direction of the extension of the axis, the socket has a first end and a second end, wherein the inner wall of the socket is provided with a flange, one side of the flange coincides with the first end or the second end.

6. The reference frame for stereotactic navigation of an instrument according to claim 5, wherein, The inner wall of the socket is also provided with a fixing groove, wherein the length extension direction of the fixing groove is the same as the extension direction of the axis of the socket.

7. The reference frame for stereotactic navigation of an instrument according to claim 1, wherein, The fastener includes a bolt and a nut, with one end of the bolt passing through the first connecting plate and the second connecting plate in sequence, and the nut being screwed onto the bolt from the end of the bolt closest to the second connecting plate.

8. The reference frame for stereotactic navigation of an instrument according to claim 1, wherein, The outer wall of the socket is also provided with several threaded holes, which are connected to the internal space of the socket.

9. The reference frame for stereotactic navigation of an instrument according to claim 1, wherein, The frame includes: The first frame and the second frame; A first connecting rod and a second connecting rod, wherein the first connecting rod is used to connect the first frame to the outer wall of the sleeve, and the second connecting rod is used to connect the second frame to the outer wall of the sleeve.

10. The reference frame for a stereotactic navigation instrument according to claim 9, wherein, The axes of the first connecting rod and the second connecting rod are both perpendicular to the axis of the sleeve, and the axis of the first connecting rod is perpendicular to the axis of the second connecting rod.

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