CN221904003U - Fixing device for anterior cervical surgery - Google Patents

Abstract

The utility model relates to the technical field of medical equipment, in particular to a fixing device for anterior cervical surgery, which comprises: a mounting plate; the supporting plate is fixedly connected with the mounting plate, and a plurality of mounting holes are formed in the plate wall; the connecting seat is arranged on the outer side of the supporting plate, is connected with the reference bracket and is connected with the mounting hole; the fixing mechanism is connected with the mounting plate; wherein, fixed establishment includes: a control assembly; the connecting component is arranged between the control component and the supporting plate; the adsorption component is arranged on the inner side of the bottom end of the mounting plate and is connected with the control component, and the fixing mechanism is arranged to fix the mounting plate and quickly disassemble and assemble the reference bracket, so that the navigation locator fixing device can be fixed on the front surface of the cervical vertebra, the operation precision can be effectively improved, the operation time is reduced, and the operation difficulty of the front access of the cervical vertebra is reduced.

Description

A fixation device for anterior cervical spine surgery

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a fixing device used for anterior cervical spine surgery.

Background Art

With the development of medical science and the continuous emergence of modern large-scale medical equipment, modern orthopedic surgery has been developing in the direction of minimally invasive, safe, and biologically consistent concepts, and computer-assisted orthopedic surgery has emerged. Computer-assisted orthopedic surgery applies navigation technology to the surgical process. Surgical navigation technology combines medical imaging diagnosis technology, spatial positioning technology, three-dimensional image processing technology, and high-performance computers. Usually, the CT or MRI tomographic images of the patient are used to reconstruct a three-dimensional model of the anatomical structure, so that doctors can observe the relationship between the tissue structure around the lesion from all angles and formulate the best and safest surgical plan before surgery.

In cervical spine surgery, the usual practice is to connect a navigation bracket with a fixing clip, clamp the fixing clip on the spinous process of the patient's cervical spine or fix it on the patient's skull, and then perform real-time image navigation. However, this navigation locator fixing device has some problems: in some surgeries that require an anterior cervical approach, the relative position relationship of the skull is unstable and there is no corresponding navigation locator fixing device for anterior cervical surgery, so the intraoperative navigation system cannot be used. In addition, when performing anterior cervical approach surgery, it is usually necessary to place an additional retractor to block and protect physiological tissues (tracheoesophageal sheath, vascular sheath) and expose the surgical field of view. When placing the retractor, the retractor needs to be fixed. The displacement of the retractor during surgery may cause damage to the esophagus, trachea and large blood vessels in the neck. In severe cases, it may cause rupture of neck blood vessels and tracheoesophageal fistula during or after surgery, resulting in increased difficulty of surgery, prolonged operation time, difficulty in postoperative wound healing, and even death. Therefore, in view of the above situation, it is urgent to develop a fixing device for anterior cervical spine surgery to overcome the shortcomings in current practical applications.

Utility Model Content

The purpose of the utility model is to provide a fixation device for anterior cervical spine surgery to solve the problems raised in the above background technology.

In order to achieve the above purpose, the utility model provides the following technical solutions:

A fixation device for anterior cervical spine surgery, comprising:

Mounting plate;

A support plate, the support plate is fixedly connected to the mounting plate, and a plurality of mounting holes are arranged on the plate wall;

A connecting seat, which is arranged outside the supporting plate, connected to the reference bracket and connected to the mounting hole;

A fixing mechanism, the fixing mechanism is connected to the mounting plate and is used to cooperate with the mounting plate to fix the connecting seat;

Wherein, the fixing mechanism comprises:

A control assembly connected to the mounting plate;

A connecting assembly, which is disposed between the control assembly and the support plate and is used to cooperate with the control assembly to realize installation and fixation of the connecting seat;

An adsorption component is arranged on the inner side of the bottom end of the mounting plate and is connected to the control component, and is used to cooperate with the control component to achieve adsorption connection between the mounting plate and the anterior surface of the cervical vertebra.

Compared with the prior art, the beneficial effects of the utility model are:

When the device is running, the mounting plate is installed on the anterior cervical vertebra, and the connection between the mounting plate and the anterior cervical vertebra is achieved by fixing bolts. The control component drives the adsorption component, and the adsorption component realizes the adsorption connection between the mounting plate and the surface of the anterior cervical vertebra. The connecting seat is inserted into the inner side of the corresponding mounting hole as needed, and the connecting assembly is connected to the connecting seat. The control component drives the connecting assembly to complete the fixation of the connecting seat, and the disassembly and assembly are convenient. Compared with the navigation locator fixing device in the prior art, in some surgeries that require an anterior cervical approach, the relative position relationship of the skull is unstable, and there is no corresponding navigation locator fixing device for anterior cervical surgery, and the intraoperative navigation system cannot be used. By setting a fixing mechanism, the control component cooperates with the adsorption component and the connecting component, not only the fixing of the mounting plate can be completed, but also the reference bracket can be quickly disassembled and assembled, so that the navigation locator fixing device can be fixed on the surface of the anterior cervical vertebra. The device is integrally formed, which reduces the damage to the patient when the surgical retractor is set, facilitates the operator's operation, and reduces the number of surgical instruments. It can effectively improve the surgical accuracy, reduce the operation time, and reduce the difficulty of anterior cervical approach surgery. It is simple to operate and easy to use.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a fixation device for anterior cervical spine surgery.

FIG. 2 is an enlarged schematic diagram of the structure at point A in FIG. 1 .

FIG. 3 is a schematic diagram of the structure of a slide plate in a fixation device for anterior cervical spine surgery.

In the figure: 1-mounting plate, 2-connecting box, 3-support plate, 4-mounting hole, 5-connecting seat, 6-reference bracket, 7-connecting frame, 8-positioning block, 9-rotating rod, 10-control rod, 11-lifting plate, 12-telescopic member, 13-driving member, 14-driving rod, 15-piston member, 16-piston tube, 17-air guide groove, 18-suction cup, 19-slide plate, 20-slide groove, 21-control plate, 22-connecting plate, 23-sleeve rod, 24-driven rod, 25-threaded rod, 26-positioning groove.

DETAILED DESCRIPTION

The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

Please refer to Figure 1. In one embodiment of the utility model, a fixing device for anterior cervical spine surgery includes: a mounting plate 1; a support plate 3, wherein the support plate 3 is fixedly connected to the mounting plate 1, and a plurality of mounting holes 4 are provided on the plate wall; a connecting seat 5, wherein the connecting seat 5 is arranged on the outer side of the support plate 3, connected to the reference bracket 6, and connected to the mounting hole 4; a fixing mechanism, wherein the fixing mechanism is connected to the mounting plate 1, and is used to cooperate with the mounting plate 1 to achieve fixation of the connecting seat 5; wherein the fixing mechanism includes: a control component, wherein the control component is connected to the mounting plate 1; a connecting component, wherein the connecting component is arranged between the control component and the support plate 3, and is used to cooperate with the control component to achieve installation and fixation of the connecting seat 5; an adsorption component, wherein the adsorption component is arranged on the inner side of the bottom end of the mounting plate 1, and is connected to the control component, and is used to cooperate with the control component to achieve adsorption connection between the mounting plate 1 and the surface of the anterior cervical spine.

In this embodiment, when the device is running, the mounting plate 1 is installed on the anterior cervical vertebra, and the connection between the mounting plate 1 and the anterior cervical vertebra is realized by fixing bolts, the control component drives the adsorption component, and the adsorption component realizes the adsorption connection between the mounting plate 1 and the surface of the anterior cervical vertebra, and the connecting seat 5 is inserted into the inner side of the corresponding mounting hole 4 as needed, the connecting component is connected to the connecting seat 5, and the control component drives the connecting component to complete the fixation of the connecting seat 5, and the disassembly and assembly are convenient. Compared with the navigation locator fixing device in the prior art, in some surgeries that require an anterior cervical approach, the relative position relationship of the skull is unstable. , and there is no corresponding navigation locator fixing device for anterior cervical surgery, and the intraoperative navigation system cannot be used. By setting a fixing mechanism, the control component cooperates with the adsorption component and the connecting component, not only can the mounting plate 1 be fixed, but also the reference bracket 6 can be quickly disassembled and assembled, so that the navigation locator fixing device can be fixed on the anterior cervical surface. The device is integrally formed, which reduces the damage to the patient when the surgical retractor is set, facilitates the operator's operation, and reduces the number of surgical instruments. It can effectively improve the surgical accuracy, reduce the operation time, and reduce the difficulty of anterior cervical approach surgery. It is simple to operate and easy to use.

In one embodiment of the utility model, the control component includes: a connection box 2, which is arranged on the outside of the mounting plate 1 and fixedly connected to the mounting plate 1; a lifting plate 11, which is arranged on the inside of the connection box 2, connected to the connection box 2 through a telescopic member 12, and connected to the adsorption component; a driving member 13, which is fixedly connected to the lifting plate 11, and the output end is connected to the driving rod 14; a control rod 10, which is sleeved on the outside of the driving rod 14, rotatably connected to the connection box 2, and to the connecting component, and is used to cooperate with the driving rod 14 to drive the connecting component.

In this embodiment, a telescopic member 12 is fixedly connected between the top of the lifting plate 11 and the inner wall of the connecting box 2. The telescopic member 12 is an electric telescopic rod. A driving member 13 is fixedly connected to the outer side of the lifting plate 11. The driving member 13 is a driving motor. The output end of the driving member 13 is fixedly connected to a driving rod 14. A guide block is fixedly connected to the outer side of the driving rod 14. The guide block is slidably connected to a guide groove provided on the inner wall of the control rod 10. The top of the control rod 10 is connected to the connecting assembly. By setting up the control assembly, not only can the adsorption assembly be driven, but also the reference bracket 6 can be installed in cooperation with the connecting assembly, which greatly improves the convenience of the equipment when in use.

In one embodiment of the utility model, the adsorption assembly includes: an air guide groove 17, which is arranged on the inner side of the bottom end plate wall of the mounting plate 1; a piston tube 16, which is fixedly connected to the mounting plate 1, connected to the air guide groove 17, and has an inner sliding connection with a piston member 15 connected to the lifting plate 11; a suction cup 18, which is arranged on the plate wall of the mounting plate 1, connected to the air guide groove 17, and is used to cooperate with the movement of the piston member 15 to realize the adsorption connection between the mounting plate 1 and the anterior surface of the cervical spine.

In this embodiment, a plurality of suction cups 18 are arranged on the bottom wall of the mounting plate 1, one end of the piston tube 16 is fixedly connected to the mounting plate 1, and the other end leads to the inner side of the connecting box 2, the piston member 15 comprises a piston slidably connected to the inner side of the piston tube 16, a push rod is fixedly connected between the piston and the lifting plate 11, when the lifting plate 11 moves driven by the telescopic member 12, the air located on the inner side of the suction cup 18 enters the inner side of the piston tube 16 along the air guide groove 17, and negative pressure is formed on the inner side of the suction cup 18, thereby realizing the adsorption connection between the mounting plate 1 and the surface of the anterior cervical spine, and by providing an adsorption component, the further connection between the mounting plate 1 and the anterior cervical spine can be realized, thereby improving the stability of the device after installation.

In one embodiment of the utility model, please refer to Figures 1, 2 and 3, the connecting assembly includes: a connecting frame 7, which is arranged between the connecting box 2 and the supporting plate 3 and is fixedly connected to the mounting plate 1; a slide plate 19, which is arranged on the inner side of the connecting frame 7 and is slidably connected to a slide groove 20 arranged on the frame wall of the connecting frame 7; a driven rod 24, which is rotatably connected to the slide plate 19; a threaded rod 25, which is arranged on the inner side of the driven rod 24, connected to the driven rod 24 through a sliding member, and threadedly connected to the connecting seat 5; an elastic member, which is fixedly connected between the driven rod 24 and the threaded rod 25; a transmission assembly, which is arranged between the control assembly and the driven rod 24, and is used to cooperate with the control assembly to drive the driven rod 24 to rotate to achieve the connection between the threaded rod 25 and the connecting seat 5.

In this embodiment, the sliding member includes a slider fixedly connected to the outer side of the threaded rod 25, the slider and the slide groove arranged on the inner wall of the driven rod 24, an elastic member fixedly connected between the bottom end of the threaded rod 25 and the driven rod 24, and the elastic member is a spring. In addition, a control plate 21 is fixedly connected to the outer side of the slide plate 19, and the control plate 21 drives the slide plate 19 to move through the control plate 21, and the slide plate 19 drives the threaded rod 25 to move to the lower side of the connecting seat 5, and the elastic member drives the threaded rod 25 to be connected to the connecting seat 5, and the transmission assembly cooperates with the control assembly to drive the driven rod 24 to rotate, and the driven rod 24 drives the threaded rod 25 to rotate through the slider, and the threaded rod 25 is threadedly connected to the connecting seat 5, and then cooperates with the connecting seat 5 to complete the installation of the reference bracket 6. By setting the connecting assembly, the reference bracket 6 can be quickly disassembled and assembled in cooperation with the control assembly, which greatly improves the convenience of the device when in use;

In addition, a plurality of positioning blocks 8 are provided on the inner side of the slide groove 20. The positioning blocks 8 are provided corresponding to the mounting holes 4. A spring is provided for fixing the positioning blocks 8 and the connecting frame 7. A positioning groove 26 which is engaged with the positioning blocks 8 is provided on the wall of the slide plate 19. By providing the positioning blocks 8, it is convenient for people to locate the position of the threaded rod 25, thereby realizing accurate installation of the connecting seat 5.

In one embodiment of the utility model, the transmission assembly includes: a rotating rod 9, which is rotatably connected to the connecting frame 7 and connected to the control rod 10; a sleeve rod 23, which is sleeved on the outside of the rotating rod 9, connected to the rotating rod 9 through a limit member, rotatably connected to a connecting plate 22 fixedly connected to the outside of the slide 19, and connected to the driven rod 24, for cooperating with the control assembly to realize the rotation of the driven rod 24.

In this embodiment, the rotating rod 9 and the control rod 10 are meshedly connected via bevel gears, and the limiting member includes a limiting block fixedly connected to the outside of the rotating rod 9, and the limiting block is slidably connected to the limiting groove arranged on the inner wall of the sleeve rod 23. The sleeve rod 23 and the driven rod 24 are meshedly connected via bevel gears. By setting a transmission assembly, the rotation of the driven rod 24 can be achieved in cooperation with the control assembly, thereby completing the disassembly and assembly of the reference bracket 6.

In one embodiment of the utility model, the contact end of the mounting plate 1 and the anterior cervical vertebra is arc-shaped, which conforms to the physiological curvature of the anterior cervical vertebra, so that the fixing plate 1 can fit tightly on the surface of the anterior cervical vertebra. In addition, the mounting plate 1 is connected to the anterior cervical vertebra by using three triangular threaded holes in cooperation with fixing bolts, which is conducive to the stability of the navigation locator fixing device when the mounting plate 1 is fixed on the anterior cervical vertebra, and is not prone to problems such as rotation deviation.

The fixing device for anterior cervical spine surgery can not only fix the mounting plate 1, but also quickly disassemble and assemble the reference bracket 6 by setting a fixing mechanism, and the control component cooperates with the adsorption component and the connecting component, so that the navigation locator fixing device can be fixed on the surface of the anterior cervical spine. The device is integrally formed, which reduces the damage to the patient when the surgical retractor is set, facilitates the operator's operation, and reduces the number of surgical instruments. It can effectively improve the surgical accuracy, reduce the operation time, and reduce the difficulty of anterior cervical spine surgery. It is simple to operate and easy to use. The contact end of the mounting plate 1 and the anterior cervical spine is arc-shaped, which conforms to the physiological curvature of the anterior cervical spine, so that the fixing plate 1 can fit tightly on the surface of the anterior cervical spine. In addition, the mounting plate 1 is connected to the anterior cervical spine by three threaded holes designed in a triangle and matched with fixing bolts, which is conducive to the stability of the navigation locator fixing device when the mounting plate 1 is fixed on the anterior cervical spine, and is not prone to problems such as rotation deviation.

The above are only preferred implementations of the utility model. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model. These should also be regarded as the protection scope of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims (5)

1. A fixation device for anterior cervical spine surgery, comprising: Mounting plate; A support plate, the support plate is fixedly connected to the mounting plate, and a plurality of mounting holes are arranged on the plate wall; A connecting seat, which is arranged outside the supporting plate, connected to the reference bracket and connected to the mounting hole; A fixing mechanism, the fixing mechanism is connected to the mounting plate and is used to cooperate with the mounting plate to fix the connecting seat; Wherein, the fixing mechanism comprises: A control assembly connected to the mounting plate; A connecting assembly, which is disposed between the control assembly and the support plate and is used to cooperate with the control assembly to realize installation and fixation of the connecting seat; An adsorption component is arranged on the inner side of the bottom end of the mounting plate and is connected to the control component, and is used to cooperate with the control component to achieve adsorption connection between the mounting plate and the anterior surface of the cervical vertebra. 2. The fixation device for anterior cervical spine surgery according to claim 1, characterized in that the control component comprises: A connection box, which is arranged outside the mounting plate and fixedly connected to the mounting plate; A lifting plate, which is arranged inside the connection box, connected to the connection box through a telescopic member, and connected to the adsorption assembly; A driving member, wherein the driving member is fixedly connected to the lifting plate, and an output end of the driving member is connected to a driving rod; A control rod is sleeved on the outside of the driving rod, is rotatably connected to the connection box, and is connected to the connection assembly, and is used to cooperate with the driving rod to drive the connection assembly. 3. The fixation device for anterior cervical spine surgery according to claim 2, characterized in that the adsorption component comprises: An air guide groove, the air guide groove is arranged on the inner side of the bottom wall of the mounting plate; A piston tube, the piston tube is fixedly connected to the mounting plate, connected to the air guide groove, and has a piston member connected to the lifting plate slidably connected inside; A suction cup is arranged on the wall of the mounting plate and is connected to the air guide groove, and is used to cooperate with the movement of the piston member to achieve adsorption connection between the mounting plate and the anterior surface of the cervical vertebra. 4. The fixation device for anterior cervical spine surgery according to claim 3, characterized in that the connecting assembly comprises: A connection frame, which is disposed between the connection box and the support plate and is fixedly connected to the mounting plate; A slide plate, which is arranged inside the connecting frame and is slidably connected to a slide groove arranged on a wall of the connecting frame; A driven rod, the driven rod being rotatably connected to the slide plate; A threaded rod, the threaded rod is arranged inside the driven rod, connected to the driven rod through a sliding member, and threadedly connected to the connecting seat; An elastic member, wherein the elastic member is fixedly connected between the driven rod and the threaded rod; The transmission assembly is arranged between the control assembly and the driven rod, and is used to cooperate with the control assembly to drive the driven rod to rotate to achieve the connection between the threaded rod and the connecting seat. 5. The fixation device for anterior cervical spine surgery according to claim 4, characterized in that the transmission assembly comprises: A rotating rod, the rotating rod is rotatably connected to the connecting frame and connected to the control rod; A sleeve rod is sleeved on the outside of the rotating rod, connected to the rotating rod through a limit piece, rotatably connected to a connecting plate fixedly connected to the outside of the slide plate, and connected to the driven rod, for cooperating with the control component to realize the rotation of the driven rod.