Holding device for thoracolumbar posterior surgery

Abstract

The utility model relates to an enclasping device for thoracolumbar posterior surgery. The enclasping device comprises an enclasping clamp body and two clamp heads connected with the enclasping clamp body. Wherein the holding clamp body comprises two hinged clamp handles and two push rods which are mutually crossed and hinged; the tong head comprises a holding arm and a holding head end; correspondingly, the upper portions of the plier handles are hinged to the holding arms respectively, and sliding grooves are formed in the holding arms. Correspondingly, one ends of the two push rods are in sliding fit with the sliding grooves in the holding arms respectively; the other end of the clamping arm is hinged with the other clamping arm; reeds which are matched with each other are arranged between the two forceps handles. And a limiting adjusting rod for controlling the forceps head to move is also arranged between the two forceps handles. The device has the advantages that the device is simple in structure, convenient to use and high in operability; the interbody fusion cage can be attached to the upper vertebral body and the lower vertebral body more tightly, so that fusion between the upper vertebral body and the lower vertebral body is promoted, and the operation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a clamping device used for posterior thoracic and lumbar spine surgery. Background Art

[0002] Degenerative lesions, inflammation, trauma and deformity of the spine are the main causes of spinal instability, cervical spondylosis and lumbar diseases. At present, intervertebral fusion is a common method for patients with spinal instability who need surgical treatment. Since the 1940s, intervertebral fusion devices have been used in foreign countries to treat spinal diseases such as cervical spondylosis and lumbar disc herniation. Subsequently, various intervertebral fusion devices have appeared one after another. The advantages of existing intervertebral fusion devices are that they can provide immediate stability for the spine; restore intervertebral height; and promote vertebral bone fusion by inserting bone grafts or other bioactive substances.

[0003] Current clinical applications have found that intervertebral fusion devices also have many shortcomings: although commonly used intervertebral fusion devices come in different sizes, their sizes and shapes are fixed and cannot be adjusted according to the specific conditions of different patients.

[0004] Therefore, in summary, there is an urgent need for a clamp for posterior thoracolumbar surgery that can solve the fit between the intervertebral fusion device and the upper and lower vertebrae, avoid possible sliding after implantation, reduce damage to the facet joints and end plates during implantation, and make the intervertebral fusion device fit more closely with the upper and lower vertebrae. Summary of the invention

[0005] The utility model aims to solve the above problems existing in the prior art and provide a clamping device for posterior thoracic and lumbar spine surgery.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A clamping device for posterior thoracolumbar spine surgery comprises a clamping clamp body and two clamp heads connected to the clamping clamp body; wherein the clamping clamp body comprises two hinged clamp handles and two push rods hinged to each other; the clamp head comprises a clamping arm and a clamping head end;

[0008] Correspondingly, the upper part of the clamp handle is respectively hingedly connected to the clamping arm, and a sliding groove is arranged on the clamping arm; correspondingly, one end of the two push rods is respectively slidably matched with the sliding groove on the clamping arm; the other end thereof is hinged to the other clamping arm; correspondingly, a spring sheet that cooperates with each other is arranged between the two clamp handles; and a limit adjustment rod for controlling the movement of the clamp head is also arranged between the two clamp handles.

[0009] The clamping device for posterior thoracic and lumbar spine surgery provided by the utility model can also have the following technical features: hand-held grooves for auxiliary grasping are arranged on both sides of the clamping forceps body, and the hand-held grooves are designed in accordance with ergonomics.

[0010] The clamping device for posterior thoracic and lumbar spine surgery provided by the utility model can also have the following technical features: the clamping clamp bodies are all provided with grooves for placing limit adjustment rods; a rotating shaft is provided in the groove of one of the clamping clamp bodies; one end of the limit adjustment rod is rotatably connected to the rotating shaft in the groove; and teeth are also provided on the limit adjustment rod.

[0011] Correspondingly, a groove of the other clamping pliers body is provided with limit groove teeth corresponding to the teeth on the limit adjustment rod; and the limit groove teeth move in coordination with the teeth on the limit adjustment rod.

[0012] The clamping device for posterior thoracic and lumbar spine surgery provided by the utility model may also have the following technical features: the clamping arm and the clamping head end are integrally linked, and the connection between the clamping arm and the clamping head end is arranged to be inclined; and the clamping head end is arranged in an "h"-shaped structure as a whole.

[0013] Due to the adoption of the above technical solution, the utility model obtains the following beneficial effects:

[0014] The utility model has a simple structure, is easy to use and has strong operability. It can overcome the sliding phenomenon that may occur in the existing intervertebral fusion device after implantation and reduce the damage to the small joints and end plates during implantation, accurately adjust the tightening distance of the two clamp handles, and improve the success rate and safety of the operation. At the same time, it can make the intervertebral fusion device fit more closely with the upper and lower vertebrae, thereby promoting the fusion between the upper and lower vertebrae and improving the efficiency of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of a clamp used for posterior thoracic and lumbar spine surgery in an embodiment of the utility model.

[0016] Figure 2 It is a structural schematic diagram of the clamp head in the embodiment of the utility model.

[0017] Figure 3 It is a structural schematic diagram of the clamp handle and the limit adjustment rod in the embodiment of the utility model.

[0018] The reference numerals are as follows:

[0019] 1. Hold the clamp body tightly;

[0020] 11. Pliers handle;

[0021] 12. Putting;

[0022] 13. Reed;

[0023] 14. Anchor nails;

[0024] 15. Limit adjustment rod;

[0025] 16. Handheld slot;

[0026] 151, groove;

[0027] 152. Rotation axis;

[0028] 153. Teeth;

[0029] 154, limit groove teeth;

[0030] 2. Clamp head;

[0031] 21. Hold your arms tight;

[0032] 22. Hold the head end tightly;

[0033] 23. Chute. DETAILED DESCRIPTION

[0034] See also Figure 1-3 As shown, the device is mainly used to overcome the sliding phenomenon that may occur in the existing intervertebral fusion device after implantation and to reduce the damage to the small joints and end plates during implantation, so that the intervertebral fusion device fits more closely with the upper and lower vertebral bodies; for this purpose, a clamping device for posterior thoracic and lumbar surgery is specially proposed to match daily surgical needs and improve efficiency during surgery.

[0035] Based on this, Figure 1 , Figure 2 As shown, the device includes a clamp body 1 and two clamp heads 2 connected to the clamp body 1; wherein the clamp body 1 includes two hinged clamp handles 11 and two push rods 12 that are cross-hinged; correspondingly, the clamp head 2 includes a clamp arm 21 and a clamp head end 22; and the clamp arm 21 and the clamp head end 22 are integrally connected, and the connection between the clamp arm 21 and the clamp head end 22 is set to be inclined; the inclination angle is 0-45° with the horizontal plane of the clamp arm 21, and the design ensures that the clamp head of the clamp can fit tightly with the upper and lower vertebrae regardless of front or back pressure, maintain the intervertebral height, and prevent sliding. And the clamp head end is set in an "h"-shaped structure as a whole. This setting can facilitate the fit and tightening between the upper and lower vertebrae with the intervertebral fusion device, thereby promoting the fusion of the upper and lower vertebrae.

[0036] Correspondingly, in order to achieve the tightening and fusion between the clamp and the upper and lower vertebrae, a clamp arm 21 is hingedly connected to the upper part of the clamp handle 11, and a slide groove 23 is provided on the clamp arm 21; correspondingly, one end of each push rod 12 is slidably matched with the slide groove 23 on the clamp arm 21; and the other end thereof is hingedly connected to another clamp arm 21;

[0037] Correspondingly, a spring sheet 13 that cooperates with each other is arranged between the two clamp handles 11; and a limit adjustment rod 15 that controls the movement of the clamp head is also arranged between the two clamp handles 11. This setting adopts a traditional rotating anchor 14 to be hinged and fixed with the clamp handle 11 and the clamping arm 21, so as to realize rotation; correspondingly, the limit adjustment rod 15 can be driven to move inward by squeezing the clamp handle 11 inward; its limit adjustment rod can fix the moving position; at the same time, the teeth on the limit adjustment rod can cooperate with the limit groove teeth in the clamp handle groove; thereby completing the tightening operation of the clamp; and the hinged setting between the various components in this device are all existing mature technologies, and are relatively common in current life, so no further elaboration is given here.

[0038] like Figure 3 As shown, hand-gripping grooves 16 for assisting gripping are provided on both sides of the clamping pliers body 1, and the hand-gripping grooves 16 conform to the ergonomic design of human hands, which can improve the user experience of the operator when in use.

[0039] In addition, in the present embodiment, a groove 151 for placing a limit adjustment rod 15 is provided on the clamping clamp body 1; a rotating shaft 152 is provided in the groove 151 of one of the clamping clamp bodies; and one end of the limit adjustment rod 15 is rotatably connected to the rotating shaft 152 in the groove 151; and teeth 153 are also provided on the limit adjustment rod 15; correspondingly; a limit groove tooth 154 corresponding to the teeth on the limit adjustment rod is provided in the groove of the other clamping clamp body; and the limit groove tooth 154 moves in coordination with the teeth 153 on the limit adjustment rod; therefore, when tightening, it is only necessary to squeeze the clamp handle, and under the cooperation of the spring leaf and the two push rods hinged to each other, the limit adjustment rod 15 located on the limit tooth groove will slowly move to one side with the squeezing, thereby driving the clamp head to tighten inward, so that the intervertebral fusion device fits more closely between the upper and lower vertebrae, and promotes the fusion between the upper and lower vertebrae; and under the setting of the limit adjustment rod, the tightening distance of the two clamp handles can be accurately adjusted to improve the success rate and safety of the operation.

[0040] It should be noted that: the utility model has a simple structure, is easy to use and has strong operability; it can overcome the sliding phenomenon that may occur in the existing intervertebral fusion device after implantation and reduce the damage to the small joints and end plates during implantation, so that the intervertebral fusion device can fit more closely with the upper and lower vertebrae, thereby promoting the fusion between the upper and lower vertebrae and improving the efficiency of the operation; in addition, the clamping device applied for posterior thoracic and lumbar surgery in this device has been internally produced and used in the current clinical practice, and has achieved good user experience.

[0041] The above-mentioned related explanations and descriptions of the embodiments are for the convenience of ordinary technicians in the technical field to understand and apply the utility model. It is obvious that those familiar with the technology in the field can easily make various modifications to these contents and apply the general principles described here to other embodiments without creative work. Therefore, the utility model is not limited to the above-mentioned related explanations and descriptions of the embodiments. Improvements and modifications made by technicians in the field based on the disclosure of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.

Claims

1. A clamp for posterior thoracic and lumbar spine surgery, characterized in that: It comprises a clamping pliers body and two clamp heads connected to the clamping pliers body; wherein the clamping pliers body comprises two hinged pliers handles and two push rods hinged to each other; the clamp heads comprise a clamping arm and a clamping head end; Correspondingly, the upper part of the clamp handle is respectively hingedly connected to the clamping arm, and a slide groove is arranged on the clamping arm; correspondingly, one end of the two push rods is respectively slidably matched with the slide groove on the clamping arm; and the other end thereof is hingedly connected to the other clamping arm; Correspondingly, a spring sheet that cooperates with each other is arranged between the two pliers handles; and a limit adjustment rod for controlling the movement of the pliers head is also arranged between the two pliers handles.

2. The clamp for posterior thoracic and lumbar spine surgery according to claim 1, characterized in that: Both sides of the clamp body are provided with hand-gripping grooves for auxiliary grasping, and the hand-gripping grooves are designed in accordance with ergonomics.

3. The clamp for posterior thoracic and lumbar spine surgery according to claim 1, characterized in that: The clamping pliers are provided with grooves for placing the limit adjustment rods; a rotating shaft is provided in the groove of one of the clamping pliers; one end of the limit adjustment rod is rotatably connected to the rotating shaft in the groove; and teeth are also provided on the limit adjustment rod; Correspondingly, a groove of the other clamping pliers body is provided with limit groove teeth corresponding to the teeth on the limit adjustment rod; and the limit groove teeth move in coordination with the teeth on the limit adjustment rod.

4. The clamp for posterior thoracic and lumbar spine surgery according to claim 1, characterized in that: The clamping arm is connected to the clamping head end in an integral manner, and the connection between the clamping arm and the clamping head end is arranged to be inclined; and the clamping head end is arranged in an "h"-shaped structure as a whole.

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