Hard bone clamping and fixing instrument for simulating operation

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a hard bone clamping and fixing instrument for simulating an operation, which is mainly used for fixing a long bone in a long bone fracture simulation operation under a navigation system. The device mainly comprises a connecting arm; the fixing piece is connected with the connecting arm, the fixing piece is provided with a first fixing part and a second fixing part, and the first fixing part and the second fixing part are opposite to each other; the fastener is connected with the first fixing part, the fastener can move towards the second fixing part relative to the first fixing part, and the fastener can abut against the second fixing part; the long bone model fixing device mainly solves the problem of how to fix a long bone model for simulating an operation.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, and in particular relates to a hard bone clamping and fixing instrument for simulated surgery. Background Art

[0002] Surgical navigation is a computer-assisted medical technology guided by medical imaging. It uses the patient's medical images and the three-dimensional models reconstructed from them to guide the implementation of clinical operations in real time. Surgical navigation systems have been widely used in neurosurgery and orthopedic surgery. The surgical navigation system links the patient's preoperative medical imaging data with the surgical site during surgery through a positioning device, and can accurately display the patient's anatomical structure and the details of the three-dimensional spatial location near the lesion in the software interface. When the surgical instrument is pointed at any part of the patient's body, its coordinate information will be acquired by the navigation system in real time and displayed on the patient's three-dimensional model. In this way, even without operating on the patient, the doctor can understand the relative position relationship between the surgical instrument and the lesion in real time.

[0003] In current surgical navigation research, in the simulation of long bone fracture surgery (long bones are long, tubular bones that mainly exist in the limbs and play a supporting role, such as the femur), a long bone model is used to simulate long bone fracture surgery under the navigation system; however, in order to simulate the real surgical environment, the long bone model needs to be fixed. Based on this, how to fix the long bone model is an urgent problem to be solved.

[0004] In view of the above problems, the utility model provides a hard bone clamping and fixing instrument for simulated surgery. Utility Model Content

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

[0006] A bone clamping and fixing device for simulated surgery, comprising:

[0007] connecting arm;

[0008] a fixing member connected to the connecting arm, wherein the fixing member has a first fixing portion and a second fixing portion, wherein the first fixing portion and the second fixing portion are opposite to each other;

[0009] A fastener is connected to the first fixing portion, wherein the fastener can move relative to the first fixing portion toward the second fixing portion and can form an abutting relationship with the second fixing portion.

[0010] In some embodiments of the present application, the fastener includes: a rod, and an operating part configured at one end of the rod; wherein, the outer wall of the rod is provided with a thread, the first fixing part has a threaded hole, the rod is screwed into the threaded hole through the thread, and moves toward the second fixing part along the axis extension direction of the threaded hole.

[0011] Furthermore, the operating portion has a protrusion, wherein at least one protrusion is provided.

[0012] In some embodiments of the present application, the second fixing portion includes: a first supporting arm and a second supporting arm spaced apart from each other, wherein the moving direction of the fastener is located between the first supporting arm and the second supporting arm.

[0013] Furthermore, the first supporting arm and the second supporting arm are arranged in a mirror image with each other.

[0014] Furthermore, the first supporting arm and the second supporting arm each have a first supporting pin and a second supporting pin, wherein the first supporting pin and the second supporting pin are arranged in an aligned manner in a height direction of the first supporting arm.

[0015] Furthermore, the first supporting nail and the second supporting nail have abutting portions, wherein the diameters of the abutting portions decrease step by step in the extending direction of the first fixing portion.

[0016] In some embodiments of the present application, the fixing member further has a connecting hole arranged between the first fixing portion and the second fixing portion, and the connecting arm is at least partially inserted into the connecting hole to form a connection relationship with the fixing member.

[0017] Furthermore, it also includes: a fastening bolt, wherein the connecting section also has a threaded hole, the fastening bolt can be screwed into the threaded hole, and one end of the fastening bolt abuts against the outer wall of the fixing member.

[0018] Furthermore, the connecting hole is a regular polygonal hole, and the connecting arm has a connecting segment with the same cross-sectional shape as the connecting hole, wherein the connecting segment is inserted into the connecting hole.

[0019] Beneficial effects of the utility model:

[0020] 1. By providing a fixing member with a first fixing portion and a second fixing portion and a fastener, multiple fixing points can be formed on the outer wall of the long bone model during use, thereby fixing the long bone model and keeping the long bone model in a stable state during the simulated surgery.

[0021] 2. By setting the first supporting pin and the second supporting pin, a recessed area is formed on the first supporting arm and the second supporting arm. After the long bone model is fixed, the long bone model is at least partially stuck in the recessed area. Therefore, after the rod supports the long bone model, the long bone model will not rotate under the action of the first supporting pin and the second supporting pin.

[0022] 3. Through the abutment portions on the first supporting pin and the second supporting pin, the front ends of the first supporting pin and the second supporting pin are formed into pointed tips, thereby increasing the contact area between the first supporting pin and the outer wall of the long bone model. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the long bone model of the utility model after being fixed;

[0025] Figure 3 This is a schematic diagram of the structure of the fixing member of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the utility model after the fixing piece and the connecting arm are separated;

[0027] Figure 5 For this utility model Figure 4 A partial enlarged schematic diagram;

[0028] Figure 6 This is a schematic cross-sectional view of a fixing member of the present utility model;

[0029] Figure 7 For this utility model Figure 6 A partial enlarged schematic diagram;

[0030] In the figure, 1. connecting arm; 11. connecting section; 2. fixing member; 21. first fixing portion; 22. second fixing portion; 221. first supporting arm; 2211. first supporting pin; 22111. abutting portion; 2212. second supporting pin; 222. second supporting arm; 23. connecting hole; 24. fastening bolt; 3. fastener; 31. operating portion; 311. protrusion; 32. rod portion. DETAILED DESCRIPTION

[0031] The following is a clear and complete description of the technical solutions in the embodiments of the present invention through specific embodiments. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Those skilled in the art can easily understand other advantages and functions of the present invention from the content disclosed in this specification. The present invention 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 of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] Figure 1 —2 shows the main technical content of this embodiment. This specific embodiment provides a hard bone clamping and fixing device for simulated surgery, which includes:

[0033] Connecting arm 1;

[0034] A fixing member 2 connected to the connecting arm 1, wherein the fixing member 2 has a first fixing portion 21 and a second fixing portion 22, wherein the first fixing portion 21 and the second fixing portion 22 are opposite to each other;

[0035] The fastener 3 is connected to the first fixing portion 21 , wherein the fastener 3 can move relative to the first fixing portion 21 toward the second fixing portion 22 and can form an abutting relationship with the second fixing portion 22 .

[0036] When in use, first install the connecting arm 1 on the connector on one side of the bed, and then place the long bone model between the first fixing part 21 and the second fixing part 22 of the fixing part 2, connect the fastener 3 to the first fixing part 21, and support the long bone model with one hand and move the fastener 3 toward the second fixing top with the other hand, so that one end of the fastener 3 is against the outer wall of the long bone model. At this time, the long bone model and the second fixing part 22 are also in abutment relationship, thereby fixing the long bone model between the fastener 3 and the second fixing part 22.

[0037] refer to Figure 2 and Figure 5—6. In the present embodiment, the fastener 3 comprises: a rod 32, and an operating portion 31 arranged at one end of the rod 32; wherein, a thread is provided on the outer wall of the rod 32, and the first fixing portion 21 has a threaded hole, the rod 32 is screwed into the threaded hole by a thread, and moves toward the second fixing portion 22 along the axis extension direction of the threaded hole; more specifically, the end of the rod 32 away from the operating portion 31 is configured as a tip, wherein the tip is conical, and after the rod 32 is connected to the first fixing portion 21, the tip is directed toward the second fixing portion 22, and when in use, the tip abuts against the outer wall of the long bone model under the overall movement of the rod 32, and can partially penetrate into the long bone model through the tip, so that after the long bone model is fixed, it is deflected after being subjected to external force during the simulated surgery.

[0038] refer to Figure 2 and Figure 7 In this embodiment, the operating portion 31 has a protrusion, wherein the protrusion is provided with at least one. When in use, the protrusion makes it easier for the operator to apply force to the operating portion 31, so that the operating portion 31 and the rod portion 32 rotate, thereby facilitating the rod portion 32 to approach the second fixing portion 22 through the cooperation between the thread and the threaded hole.

[0039] refer to Figure 2 —4 and Figure 7 In this embodiment, the second fixing portion 22 includes: a first supporting arm 221 and a second supporting arm 222 arranged at intervals, wherein the moving direction of the fastener 3 is located between the first supporting arm and the second supporting arm 222; more specifically, the extension direction of the axis of the threaded hole of the first fixing portion 21 is located between the first supporting arm 221 and the second supporting arm 222. After the long bone model is fixed by the fixing member 2 and the second fixing portion 22, the first supporting arm 221, the second supporting arm 222 and the rod portion 32 form three fixed points on the outer wall of the long bone model, so that the long bone model always remains in a stable state during the simulated surgery; preferably, the first supporting arm and the second supporting arm 222 are arranged in a mirror image of each other.

[0040] refer to Figure 3—5. In this embodiment, the first supporting arm and the second supporting arm 222 both have a first supporting pin 2211 and a second supporting pin 2212, wherein the first supporting pin 2211 and the second supporting pin 2212 are arranged in an array in the height direction of the first supporting arm 221, and there is a distance between the first supporting pin 2211 and the second supporting pin 2212, so that a recessed area is formed between the first supporting pin 2211 and the second supporting pin 2212. After the long bone model is fixed, the long bone model is at least partially stuck in the recessed area, so that after the rod 32 supports the long bone model, the long bone model will not rotate under the action of the first supporting pin 2211 and the second supporting pin 2212.

[0041] refer to Figure 3 —5. More specifically, the first supporting pin 2211 and the second supporting pin 2212 further have an abutment portion 22111, wherein the diameter of the abutment portion 22111 gradually decreases in the extension direction of the first fixing portion 21. Under this setting, the front ends of the first supporting pin 2211 and the second supporting pin 2212 form a pointed end, thereby increasing the contact area with the outer wall of the long bone model.

[0042] refer to Figure 1 —2 and Figure 4 In this embodiment, the fixing member 2 and the connecting arm 1 are detachably connected. Specifically, the fixing member 2 further has a connecting hole 23 provided between the first fixing portion 21 and the second fixing portion 22. The connecting arm 1 is at least partially inserted into the connecting hole 23 to form a connection relationship with the fixing member 2. When in use, the fixing member 2 and the connecting arm are first installed through the connecting hole 23, and then the connecting arm 1 is installed on the adapter on one side of the bed. Specifically, the depth extension direction of the connecting hole 23 is perpendicular to the moving direction of the fastener 3.

[0043] refer to Figure 5 —6. Preferably, it also includes a fastening bolt 24, wherein after the connecting arm 1 is inserted into the connecting hole 23, the fastening bolt 24 is used to connect to the connecting arm 1, so that the connecting arm 1 always maintains a connection relationship with the fixing member 2, avoiding the fixing member 2 and the connecting arm 1 from being separated during use.

[0044] More specifically, the connecting section 11 further has a threaded hole, wherein the fastening bolt 24 can be screwed into the threaded hole to complete the fixation of the fixing member 2.

[0045] refer to Figure 1 and Figure 5—6. In this embodiment, the connecting hole 23 is a regular polygonal hole, and the connecting arm 1 has a connecting section 11 with the same cross-sectional shape as the connecting hole 23. When in use, the connecting section 11 is inserted into the connecting hole 23. Under this cooperation, the fixing part will not rotate relative to the connecting arm 1, thereby keeping the spatial position of the long bone model unchanged after being fixed. In addition, under this setting, the fixing part can also adjust the angle relative to the connecting arm 1. When in use, the fixing part 2 can be removed from the connecting arm 1, and then after selecting the angle, it can be connected to the connecting arm 1 again to adjust the angle of the fixing part 2.

[0046] More specifically, the cross section of the connecting hole 23 is a regular hexagon.

[0047] The use method of this utility model:

[0048] 1. Use the fastening bolts to connect the fixing piece to the connecting arm, then install the connecting arm on the adapter on one side of the bed and screw the rod of the fastener into the threaded hole;

[0049] 2. Place the long bone model between the first and second fixing parts of the fastener. Support the long bone model with one hand and move the fastener toward the top of the second fixing part with the other hand, so that one end of the fastener rests against the outer wall of the long bone model.

[0050] 3. The first supporting arm, the second supporting arm and the rod of the fastener form three fixed points on the outer wall of the long bone model, so that the long bone model always remains stable during the simulated surgery.

[0051] The above embodiments are only for understanding 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 principles 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 bone clamping and fixing device for simulated surgery, characterized in that: It includes, connecting arm; a fixing member connected to the connecting arm, wherein the fixing member has a first fixing portion and a second fixing portion, wherein the first fixing portion and the second fixing portion are opposite to each other; A fastener is connected to the first fixing portion, wherein the fastener can move relative to the first fixing portion toward the second fixing portion and can form an abutting relationship with the second fixing portion.

2. The bone clamping and fixing device for simulated surgery according to claim 1, characterized in that: The fastener includes: a rod and an operating part arranged at one end of the rod; wherein, the outer wall of the rod is provided with a thread, the first fixing part has a threaded hole, the rod is screwed into the threaded hole through the thread, and moves toward the second fixing part along the axis extension direction of the threaded hole.

3. The bone clamping and fixing device for simulated surgery according to claim 2, characterized in that: The operating portion has a protrusion, wherein at least one protrusion is provided.

4. The bone clamping and fixing device for simulated surgery according to claim 1, characterized in that: The second fixing portion includes a first supporting arm and a second supporting arm spaced apart from each other, wherein the moving direction of the fastener is located between the first supporting arm and the second supporting arm.

5. The bone clamping and fixing device for simulated surgery according to claim 4, characterized in that: The first supporting arm and the second supporting arm are arranged in a mirror image with each other.

6. The bone clamping and fixing device for simulated surgery according to claim 4, characterized in that: The first supporting arm and the second supporting arm each have a first supporting pin and a second supporting pin, wherein the first supporting pin and the second supporting pin are arranged in an aligned manner in a height direction of the first supporting arm.

7. The bone clamping and fixing device for simulated surgery according to claim 6, characterized in that: The first supporting nail and the second supporting nail have abutting portions, wherein the diameters of the abutting portions are gradually reduced in the extending direction of the first fixing portion.

8. The bone clamping and fixing device for simulated surgery according to claim 1, characterized in that: The fixing member further has a connecting hole arranged between the first fixing portion and the second fixing portion, and the connecting arm is at least partially inserted into the connecting hole to form a connection relationship with the fixing member.

9. The bone clamping and fixing device for simulated surgery according to claim 8, characterized in that: Also includes: A fastening bolt, wherein the connecting arm further has a threaded hole, the fastening bolt can be screwed into the threaded hole, and one end of the fastening bolt abuts against the outer wall of the fixing member.

10. The bone clamping and fixing device for simulated surgery according to claim 9, characterized in that: The connecting hole is a regular polygonal hole, and the connecting arm has a connecting segment having the same cross-sectional shape as the connecting hole, wherein the connecting segment is inserted into the connecting hole.

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