A minimally invasive surgical visual access scope for the spine

Abstract

The present application provides a kind of spine surgery minimally invasive operation visual channel endoscope, including visual channel, lens, light source, guide rod, expansion pipe;Visual channel includes surgical operation channel, lens card slot, fixed connection part.Lens card slot is used to fix camera component part, and there is a light source hole on the two sides of lens card slot, for fixing cold light source head.Surgical operation channel is the channel of equal size up and down with external thread, it is convenient for surgeon to screw in and screw out soft tissue, reduce the extrusion and damage of channel to tissue.The visual channel endoscope, the visual field of surgeon can be directly operated under direct vision through surgical operation channel, also can be operated under mirror under the monitoring of camera.The double visual field of surgeon provides convenience and safety for operation, also is conducive to the observation and learning of assistant and learner, improves learning interest, is conducive to the promotion and development of spine minimally invasive surgery career.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a visual channel mirror for minimally invasive surgery of the spine. BACKGROUND

[0002] With the development of economy, the progress of medical technology, the extension of life expectancy and the change of people's lifestyle, lumbar degenerative disease has become a common disease. Most cases of lumbar degenerative disease are elderly patients, and most of them are combined with various internal diseases. Surgery is an effective means for the treatment of lumbar degenerative disease. Although traditional open surgery has definite curative effect, it has a large surgical wound, a large amount of bone tissue and muscle stripping surface is removed, and a large amount of bleeding occurs during the operation. It is difficult for patients to recover quickly because of long postoperative bed rest and recovery time. Minimally invasive surgery uses a specially designed operating channel to complete the decompression and fusion of the lesion segment. It has a small incision, less bleeding during the operation, less damage to the paravertebral tissue, less muscle traction, extrusion and stripping, and can reduce the damage to the facet joint, interspinous ligament and supraspinous ligament, maintain the stability of the posterior column of the spine, and allow the patient to get out of bed early after the operation, which is more conducive to the patient's rapid recovery. However, minimally invasive surgery is limited by the channel, has a small surgical field, high operation difficulty, long learning time and steep learning curve.

[0003] At present, the minimally invasive surgery channel used in clinical practice has a small inner diameter, and only the operator can see the surgical field during the operation. Assistants and learners usually cannot see the surgical field directly, and there is no visual function similar to a camera. It is difficult to see the entire surgical procedure, which is not conducive to the observation and learning of assistants and learners, cannot improve the interest of learners, and is not conducive to the development of spinal minimally invasive surgery. Some scholars solve the above problems by using an external microscope. However, because the microscope is placed in front of the visual field, the operation process needs to be operated through the microscope visual field, which increases the operation technology under the microscope. The microscope is located between the operator and the visual field, which actually increases the obstruction to the operation of the operator. At the same time, long-term operation under the microscope also affects the vision of the operator. Some scholars use a head-mounted microscope to solve the problem of fixed eyepiece of the traditional microscope and the problem of obstruction in front of the operation visual field. However, the magnification of the head-mounted microscope is not enough, and the dizziness and discomfort caused by the shaking of the visual field after magnification. In order to better solve the learning problem of the surgical channel technology, improve the interest and operation technology of the learners of minimally invasive surgery, and promote the development and progress of minimally invasive surgery, the inventors propose a visual channel mirror for minimally invasive surgery of the spine. The visual channel mirror can be directly operated under the direct vision through the surgical operating channel, or can be operated under the mirror through the camera monitoring. The double visual field of the operator provides convenience and safety for the operation, and is also conducive to the observation and learning of assistants and learners, improves the learning interest, and is conducive to the promotion and development of the cause of spinal minimally invasive surgery. SUMMARY

[0004] The application aims at overcoming the shortcomings of the prior art and providing a minimally invasive surgery visual channel mirror for spine surgery, which comprises a visual channel, a lens, a light source, a guide rod and an expansion tube.

[0005] As a preferred, the surgery operation channel is characterized in that a fixed channel with equal upper and lower sizes is adopted, and a screw thread is provided outside. The lens clamping groove is used for fixing the camera component part of the lens; the front end of the fixed connection part is provided with a handle on both sides, which is used for placing and taking out the surgery operation channel, and the rear part of the fixed connection part is provided with a fixed clamping groove, which is connected and fixed with the conventional fixed arm of the bed edge.

[0006] As a preferred, if a 0-degree camera is adopted, the lens clamping groove and the surgery operation channel can form a certain angle, and if a 10-30 degree lens is adopted, the angle can be reduced to parallel connection with the inner wall of the surgery operation channel according to the angle of the lens.

[0007] As a preferred, the lens clamping groove is provided with a light source hole on each side, which is used for fixing and passing through a cold light source head, and the rear part of the clamping groove is provided with a reinforcing rib, which is used for strengthening the strength of the lens clamping groove.

[0008] As a preferred, the camera is located in the center of the lens, and there are 1 to 10 light sources around the camera, and the camera light source can be a light-emitting diode or an optical fiber. When the camera light is insufficient, the double-head light source of the lens clamping groove can supplement light. When there are 0 light sources around the camera, a larger camera component can be designed, which is more conducive to the imaging system.

[0009] As a preferred, the depth of the surgery operation channel is selected according to the depth of the soft tissue or the operation site of the case.

[0010] As a preferred, the specification of the visual channel mirror is matched with the visual angle of the camera and the outer diameter specification of the camera.

[0011] As a preferred, the visual channel mirror is also provided with a guide rod and an expansion tube, so as to gradually expand the soft tissue channel, and the guide rod, the expansion tube and the surgery operation channel have diameters that can be sequentially and gradually expanded and sleeved.

[0012] As a preferred, the guide rod and the expansion tube are provided with a demolding slope at the front end, which is more conducive to expanding the soft tissue, and the rear end of the tube wall is provided with a plurality of recessed anti-skid rings.

[0013] Compared with the prior art, the application has the following technical effects:

[0014] 1) Compared with the existing surgery channel, the surgery channel mirror of the application is visualized, which can assist the assistant and the learner to observe the operation of the operator in real time during the operation, improve the learning interest, study the operation technology, shorten the learning time and reduce the learning curve.

[0015] 2) The channel of the channel mirror of the present application is an integrated channel, and the camera is an external component. The visual channel mirror can be combined with the industrial mirror on the market. It can be reused, reducing the cost of equipment and treatment.

[0016] 3) The visual channel mirror provided by the present application can make the camera obtain the best imaging angle of the surgical field of view, and the imaging effect is good.

[0017] 5) The surgical visual channel mirror provided by the present application can be directly operated under direct vision through the channel, or can be operated under the camera monitoring. The visual field of the operator is not blocked or hindered.

[0018] 6) The visual channel mirror provided by the present application is mainly suitable for the treatment of cervical vertebra, thoracic vertebra and lumbar vertebra diseases in spinal surgery.

[0019] 7) Compared with the existing intervertebral foramen mirror technology, the surgical field of the visual channel mirror is air medium, and physiological saline or other liquid medium is not needed.

[0020] 8) Compared with the existing intervertebral disc mirror technology, the channel of the visual channel mirror has a larger inner diameter, and traditional open surgery instruments can be used for decompression, fusion cage implantation and other operations can be performed from the channel, and the surgical field has double visual field.

[0021] 9) The guide rod, the expansion tube and the surgical operation channel of the visual channel mirror are three-step expansion soft tissue, which reduces the surgical operation and better protects the soft tissue.

[0022] The present application will be further described in detail below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The structure diagram of the visual channel, endoscope and light source of the visual channel mirror of the first embodiment of the present application is assembled.

[0024] Figure 2 The upper oblique view of one of the visual angles is shown. Figure 1 The left oblique view of the visual channel is shown.

[0025] Figure 3 The right view of the visual channel is shown.

[0026] Figure 4 The right view of the visual channel is shown.

[0027] Figure 5 Right lower oblique view of the visual channel;

[0028] Figure 6 Upper oblique view of the visual channel;

[0029] Figure 7 Upper view of the visual channel;

[0030] Figure 8 Full length view of the lens;

[0031] Figure 9 Partial structure schematic view of the front section of the lens;

[0032] Figure 10 Partial schematic view of the camera and light source of the front section of the lens;

[0033] Figure 11 Partial schematic view of the rear section of the lens;

[0034] Figure 12 Full length view of the light source;

[0035] Figure 13 Partial structure schematic view of the front section of the light source;

[0036] Figure 14 Partial structure schematic view of the rear section of the light source;

[0037] Figure 15 Schematic view of the expansion guide rod and expansion tube;

[0038] In the figure: 1, visual channel; 2, lens; 3, light source; 4, guide rod; 5, expansion tube; 11, surgical operation channel; 22, lens clamping groove; 33, fixed connection part; 201, semi-open clamping groove; 202, clamping groove reinforcing rib; 301, light source fixing hole; 302, visual channel handle; 303, visual channel fixing clamping groove; 221, camera assembly part; 222, camera; 223, camera light source; 224, lens bendable joint; 225, lens extension line; 226, lens tail chip area; 227, USB connector; 331, light source double head part; 332, light source extension part; 333, threaded joint part.

[0039] Specific implementation scheme one

[0040] On the basis of conventional surgery, the guide rod and the dilating tube are expanded, and then the visual channel mirror is rotated in the screw direction. The visual channel is installed in the appropriate case surgery. The clamping groove of the fixed connection part of the visual channel is tightly connected with the traditional bed edge fixing arm. The C-arm X-ray machine checks the axial position of the surgical operation channel. The axial position line of the intervertebral disc is the best operation direction. After the visual channel is fixed and installed, the camera assembly part is installed in the semi-open type clamping groove, and the light source double head part is installed in the light source fixing hole, such as Figure 1 The USB connector of the lens is connected to the computer. The operator can directly observe the situation in the channel through the surgical operation channel, and can further perform surgical operation through the image of the camera connected to the computer, such as surgical hemostasis, resection of the joint process, resection of the lamina, ipsilateral and over-the-top contralateral decompression of the spinal canal, resection of the intervertebral disc, resection of the intervertebral endplate, intervertebral irrigation, intervertebral bone grafting, and placement of the fusion cage. The camera assembly part can also be removed and inserted into the treated intervertebral space to further inspect the treatment of the space and the endplate.

[0041] Specific implementation scheme two

[0042] On the basis of the first embodiment, the anatomical points of the pedicle are identified under the visual channel mirror to perform the insertion technique of solid and hollow long-tail screws, and the pedicle screw internal fixation surgery of the corresponding segment is performed.

[0043] The above-mentioned examples are only the preferred embodiments of the present application, and do not limit the scope of the present application. Any changes made according to the shape and principle of the present application should be included in the protection scope of the present application.

Claims

1. A visual portal endoscope for minimally invasive spinal surgery, characterized in that: The system includes a visual channel (1), a lens (2), a light source (3), a guide rod (4), and an expansion tube (5); the visual channel (1) includes a surgical operation channel (11), a lens slot (22), and a fixed connection part (33); the lens (2) includes a camera assembly part (221), a camera (222), a camera light source (223), a lens bendable joint (224), a lens extension cable (225), a chip area at the tail of the lens (226), and a USB connector (227); the light source (3) includes a light source double head (331), a light source extension part (332), and a threaded connector part (333); The surgical operation channel (11), the lens slot (22), and the fixing connection part (33) are a single unit, manufactured using 3D printing. The surgical operation channel (11) is a fixed channel with equal upper and lower threads, with an inner diameter between 18-35mm, an outer diameter between 20-38mm, a length between 5-20cm, a thread pitch between 1-5mm, and 3-15 thread turns. The lens slot (22) is a semi-open slot (201), with a reinforcing rib (202) between the rear of the lens slot and the fixing connection part. There is a light source fixing hole (301) on each of its left and right sides, the length of the lens slot is between 0.5-5cm, and the inner diameter of the slot is between 0.2-1.5cm; the front end of the fixing connection part (33) is provided with a visual channel handle (302) on both sides, and the rear end is provided with a visual channel fixing slot (303); the lower part of the lens slot (22) is a semi-circular inclined surface connected to the surgical operation channel, which is the recording position of the camera (222) of the lens (2); the edges of the surgical operation channel (11), the lens slot (22), and the fixing connection part (33) are all provided with rounded corners; The camera assembly (221) has a diameter between 3.5-12mm; the camera (222) is a zoomable waterproof camera with a zoom distance of 0-10x; the camera light source (223) has 0-10 groups, and the camera light source can be composed of light-emitting diodes or optical fibers; the length of the camera bendable joint (224) is between 1-5cm, and the bendable angle is between 0-180 degrees; the lens extension line (225) is between 1.5-6m. The diameter of each light source head of the dual-head light source (331) is between 3-5mm, and the length is between 15-30cm. The length of the light source extension (332) is between 10-60cm.

2. The visual portal endoscope for minimally invasive spinal surgery according to claim 1, characterized in that: The camera assembly (221), the camera (222), the camera light source (223), the camera bendable joint (224), the lens extension line (225), the lens tail chip area (226), and the USB connector (227) are integrated into one unit.

3. The visual portal endoscope for minimally invasive spinal surgery according to claim 1, characterized in that: The dual heads (331) of the light source, the extension part (332) of the light source, and the threaded connector part (333) are an integral unit.

4. The visual portal endoscope for minimally invasive spinal surgery according to claim 1, characterized in that: The guide rod (4) and the expansion tube (5) are designed to expand the soft tissue channel in stages. They have diameters that can be connected sequentially. The front end of each tube is provided with a draft angle, and the rear end of each tube has multiple recessed anti-slip rings distributed at intervals. The diameter of the guide rod (4) is between 3-5 mm and the length is between 10-20 cm. The inner diameter of the expansion tube (5) is between 4-6 mm, the outer diameter is between 19-34 mm, and the length is between 10-15 cm.

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