An intervertebral space distractor facilitating reduced pressure operation

Abstract

The utility model relates to medical instrument technical field discloses an intervertebral space distraction device convenient to decompression operation, including the distraction device, connecting rod and handle connected in proper order, be equipped with decompression operation area on the distraction device. The intervertebral space distraction device convenient to decompression operation of the utility model can be inserted into the gap and distract adjacent vertebral bodies when decompression operation is carried out in OLIF operation, provide greater operating space for decompression operation, thereby promote decompression operation efficiency, guarantee decompression operation quality.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a space-opening device that facilitates decompression operation. Background Technology

[0002] Lumbar interbody fusion (LIF) is a common, classic, and effective treatment for degenerative lumbar spine diseases. LIF aims to achieve bony integration of the lumbar vertebrae, thereby establishing and maintaining lumbar spine stability. Depending on the surgical approach and method, lumbar interbody fusion is classified into traditional posterior lumbar interbody fusion (PLIF), transforaminal lumbar interbody fusion (TLIF), lateral lumbar interbody fusion (LLIF), anterior lumbar interbody fusion (ALIF), and oblique lateral lumbar interbody fusion (OLIF). OLIF is a novel technique for maintaining interbody fusion. The surgical approach passes through the retroperitoneum, through the natural space between the psoas major muscle and the major abdominal vessels, entering the intervertebral disc and avoiding damage to the psoas major muscle and lumbar plexus. OLIF avoids the damage to posterior lumbar structures and interference with the dura mater and nerve roots caused by PLIF and other surgeries, offering advantages such as minimal trauma and rapid recovery. It is primarily suitable for degenerative lumbar spine diseases requiring anterior decompression and fusion.

[0003] During OLIF surgery, the patient is positioned on their right side with their left side facing upward and lower limbs slightly bent, with the lumbar muscles relaxed. After the skin is incised, layers are dissected one by one, bluntly dissecting the external oblique, internal oblique, transversus abdominis, and retroperitoneal fat. Blunt dissection continues through the retroperitoneal space to the space between the psoas major muscle and the sheath of the great vessels, exposing the vertebral body. An expansion channel is inserted, and illumination allows for clear exposure of the intervertebral disc. Decompression is then performed using appropriate surgical instruments (such as an electrocautery knife, nucleus pulposus forceps, and laminectomy forceps) to remove the annulus fibrosus, nucleus pulposus, cartilaginous endplates, and osteophytes to achieve decompression. Specifically, the contralateral annulus fibrosus can be destroyed under fluoroscopy, followed by the removal of the nucleus pulposus and cartilaginous tissue of the superior and inferior endplates using a reamer. A smaller reamer is used to avoid damaging the bony endplates. After decompression, an intervertebral disc model is used to gradually open the intervertebral space before implanting the fusion cage. Finally, the fusion cage is implanted, aligned, and fixed.

[0004] During decompression procedures, the small intervertebral space limits the operating area, requiring the use of small instruments to painstakingly remove intervertebral disc tissue and cartilaginous endplates bit by bit. This process is time-consuming, labor-intensive, and carries the risk of damaging nerves and bony endplates. If the intervertebral space could be opened during decompression, providing more operating space, the efficiency and quality of the procedure would be significantly improved. While existing intervertebral disc manipulators are used to open the intervertebral space, they are typically used after decompression is complete to open and measure the space for selecting a suitable fusion device. Furthermore, the manipulator's manipulator head is a solid structure that, once inserted into the intervertebral space, completely occupies the space, leaving no room for further decompression.

[0005] Therefore, there is an urgent need for a space-opening device that facilitates decompression operations and provides operating space for the decompression procedure. Utility Model Content

[0006] To address the shortcomings of the existing technology, this invention provides a space-opening device that facilitates decompression procedures. Used in OLIF surgery, this device opens the intervertebral space and provides a decompression area during the procedure, thereby improving the efficiency and quality of the decompression operation.

[0007] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0008] A space-opening device for easy decompression operation includes a spacer, a connecting rod and a handle connected in sequence, wherein the spacer is provided with a decompression operation area.

[0009] As a preferred technical solution, the pressure reduction operation area is a pressure reduction groove located in the center of the upper part of the expander, and the pressure reduction groove runs through the front and back.

[0010] As a preferred technical solution, the pressure relief groove is U-shaped or V-shaped.

[0011] As a preferred technical solution, the decompression operation area is a decompression notch located on one side of the upper part of the expander.

[0012] As a preferred technical solution, the pressure relief notch is square, triangular, or fan-shaped.

[0013] As a preferred technical solution, the connecting rod is detachably connected to the spreader.

[0014] As a preferred technical solution, the connecting rod is threadedly connected to the spreader.

[0015] As a preferred technical solution, the rear end of the handle is provided with a striking handle.

[0016] As a preferred technical solution, the outer surface of the handle is provided with an anti-slip structure.

[0017] The beneficial effects of this utility model are:

[0018] This utility model provides a convenient intervertebral space opening device for decompression operations. By setting a decompression operation area on the opener, the main body of the opener is used to open adjacent vertebrae to increase the intervertebral space, and the decompression operation area provides space for decompression operations. Compared with the traditional method of performing decompression operations in the patient's own intervertebral space, the operation space is larger, which can improve the efficiency of decompression operations and ensure the quality of decompression operations.

[0019] This utility model provides a convenient intervertebral space opening device for decompression operation. The decompression operation area is located in the middle or on one side of the opening device. The appropriate opening device can be selected according to the needs of the decompression area location, which can meet various needs. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0022] Figure 2 yes Figure 1 An enlarged schematic diagram of the expander in the illustrated embodiment;

[0023] Figure 3 This is a schematic diagram of the expander in another embodiment.

[0024] Reference numerals: 1-spreader, 2-connecting rod, 3-handle, 4-decompression operating area, 5-knocking handle. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0026] A space-opening device that facilitates decompression procedures, such as Figure 1 As shown, it includes a spreader 1, a connecting rod 2 and a handle 3 connected in sequence, and the spreader 1 is provided with a pressure reduction operation area 4.

[0027] In one specific embodiment, such as Figure 1 , Figure 2 The pressure relief operation area 4 is a pressure relief groove located in the center of the upper part of the expander 1. The pressure relief groove is connected from front to back and is U-shaped or V-shaped. The two side walls of the pressure relief groove provide support.

[0028] In another preferred embodiment, such as Figure 3 As shown, the decompression operation area 4 is a decompression notch located on one side of the upper part of the spreader 1. The decompression notch is square, triangular, or fan-shaped. The other side of the spreader 1 is used to support the adjacent vertebrae.

[0029] Preferably, the connecting rod 2 is detachably connected to the spreader 1, for example, by a threaded connection, to facilitate the replacement of spreaders 1 of different sizes and models.

[0030] Furthermore, the handle 3 has a striking handle 5 at its rear end, which facilitates the insertion of the spreader 1 into the intervertebral space during surgery. Furthermore, the outer surface of the handle 3 has an anti-slip structure, such as anti-slip grooves or an anti-slip sleeve, to improve grip stability.

[0031] This invention provides a convenient intervertebral space opening device for decompression operations. During OLIF surgery, the device can be inserted into the intervertebral space to open adjacent vertebrae, providing more operating space for decompression operations, thereby improving the efficiency and quality of decompression operations.

[0032] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A disc space opening device for easy decompression operation, comprising a spacer, a connecting rod, and a handle connected in sequence, characterized in that: The expander is provided with a pressure reduction operation area.

2. The intervertebral space opening device for easy decompression operation according to claim 1, characterized in that: The pressure reduction operation area is a pressure reduction groove located in the center of the upper part of the expander, and the pressure reduction groove runs through the front and back.

3. The intervertebral space opening device for easy decompression operation according to claim 2, characterized in that: The pressure relief groove is U-shaped or V-shaped.

4. The intervertebral space opening device for easy decompression operation according to claim 1, characterized in that: The pressure relief operation area is a pressure relief notch located on one side of the upper part of the expander.

5. The intervertebral space opening device for easy decompression operation according to claim 4, characterized in that: The pressure relief gap is square, triangular, or fan-shaped.

6. The intervertebral space opening device for facilitating decompression operation according to claim 1, characterized in that: The connecting rod is detachably connected to the spreader.

7. The intervertebral space opening device for easy decompression operation according to claim 6, characterized in that: The connecting rod is threadedly connected to the spreader.

8. The intervertebral space opening device for easy decompression operation according to claim 1, characterized in that: The handle has a striking handle at the rear.

9. The intervertebral space opening device for easy decompression operation according to claim 8, characterized in that: The outer surface of the handle is provided with an anti-slip structure.

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