Automatic draw hook for single-hole double-medium spine endoscopic surgery

Abstract

The utility model relates to the technical field of medical instruments, in particular to a single-hole double-medium spine endoscopic surgery automatic drag hook which comprises a first clamp handle and a second clamp handle which are hinged to each other, a long leg of a hollow structure is arranged at one end of the first clamp handle, and a through hole is formed in the long leg. A cold light source line penetrates into the long leg and a lens is fixed, so that the effect of illuminating dead angles of an OBE (on-board endoscope) surgery (single-hole double-medium spine endoscopic surgery) is achieved; one end of the second forceps handle is provided with the short leg, and the short leg is connected with the aspirator connector, so that water can be drained during operation under a water medium, smooth drainage of an operation field is kept, and manpower is saved; the long leg and the short leg are respectively matched with a 7cm incision and a 3cm incision on one side of the OBE surgery, and the two sides of the incision of the OBE surgery are different in depth, so that the problems of poor distraction effect caused by too short distraction legs and secondary injury to the incision caused by too long distraction legs are solved, a doctor can observe more clearly in the OBE surgery, and the efficiency of the OBE surgery is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a single-hole double-medium automatic retractor for spinal endoscopic surgery. Background Art

[0002] One-hole Bimedium Endoscopic (OBE) technology was first proposed by Professor Cui Xingang's team of Shandong Provincial Hospital in 2020 based on the experience of 5,000 spinal endoscopic surgeries. OBE introduces minimally invasive spinal endoscopy into traditional posterior lumbar surgery, overcoming the shortcomings of the previous single medium of spinal endoscopy, and changing to two media, air and water. It highlights the fast and efficient approach under air medium, and precise and on-demand decompression under water medium, making fusion surgery safer, more efficient and minimally invasive. According to measurements, the two sides of the OBE surgical incision are not equal in height, one side is 7 cm, and the other side is 3 cm.

[0003] The patent number is: CN 201675971 U. It discloses a non-slip spinal posterior surgical retractor, which includes three parts: a handle, a hinged part and an adjustment part. The front of the retractor is "Y"-shaped, consisting of two symmetrical handles, a connecting part and an adjustment part located at the rear; the handle is composed of a gripping part, an opening ring and a blade, and the corners of the connecting parts of each part are smooth; the tail end of the gripping part is annular, which is convenient for finger loops during operation; the opening ring is arc-shaped, and the two sides form a nearly circular shape, which is convenient for expanding the surgical field of view; the blade is connected to the opening ring at 90°, is cylindrical, and the outer side is a rough surface with horizontal stripes, and the end is blunt and slightly angled outward.

[0004] When using it, first of all, according to the particularity of the anatomical structure of the back of each segment of the spine and the requirements of the length of the surgical incision according to the specific condition, the skin, subcutaneous tissue and back fascia tissue are cut in sequence, and the paraspinal muscles are peeled off close to the vertebral plates on both sides. With the assistance of the periosteal glass, the non-slip spinal posterior surgical retractor is placed (usually one is used in the upper and lower halves of the incision) to ensure that the paraspinal muscles on both sides are blocked on the outside of the leaves on both sides. After that, the retractor is opened to expose the surgical field, and the rough transverse surface of the outer side of the leaf is closely fitted with the paraspinal muscles, which is not easy to slip, thereby ensuring the smooth progress of the next surgical steps (decompression, bone grafting, internal fixation, etc.).

[0005] However, the following problems still exist during the use of the anti-slip posterior spinal surgical retractor: 1. When the anti-slip posterior spinal surgical retractor is used in OBE surgery, since the distraction parts on both sides are of equal length, it is easy to cause poor distraction effect or cause secondary damage to the 3 cm incision; 2. When the anti-slip posterior spinal surgical retractor is used in OBE surgery, since the OBE surgical incision is small, it is easy to produce a lighting dead angle of the surgical shadowless lamp, resulting in poor surgical light and low surgical efficiency. Utility Model Content

[0006] In view of the above-mentioned problems, the utility model aims to provide a single-hole dual-medium automatic retractor for spinal endoscopic surgery, thereby overcoming the problems of poor opening effect of surgical retractors in the prior art and inability to improve the dark field of view in the surgical area.

[0007] The main ideas of the technical solution adopted by this utility model are:

[0008] A single-hole, dual-medium automatic retractor for spinal endoscopic surgery is designed, which includes a first clamp handle and a second clamp handle hinged to each other, one end of the first clamp handle and the second clamp handle are both provided with a handle, the other end of the first clamp handle is provided with a leg at the same height as one side of the OBE surgical incision, the leg is a hollow structure and is provided with a through hole; the other end of the second clamp handle is provided with a leg at the same height as the other side of the OBE surgical incision.

[0009] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model to solve its technical problems is:

[0010] The single-hole dual-medium automatic retractor for spinal endoscopic surgery comprises a first clamp handle and a second clamp handle hinged to each other, wherein a first handle is arranged at one end of the first clamp handle, a second handle is arranged at one end of the second clamp handle, a long leg is arranged at the other end of the first clamp handle, and a short leg is arranged at the other end of the second clamp handle.

[0011] Furthermore, the long leg is a hollow structure and is provided with a through hole, a cold light source is sleeved in the hollow structure of the long leg, and the through hole is connected to the lens.

[0012] Furthermore, a locking mechanism is provided between the first clamp handle and the second clamp handle, and the locking mechanism is used to fix the open position of the first handle and the second handle.

[0013] Furthermore, the handle bodies of the first clamp handle and the second clamp handle both have an outwardly extending curvature.

[0014] Furthermore, an absorber interface is provided at the short leg.

[0015] The beneficial effect of the utility model is that compared with the prior art, the improvement of the utility model is that:

[0016] 1. The utility model sets long legs and short legs so that the expansion position fits the OBE surgical incision, avoiding the problem of poor expansion effect due to too short expansion part or secondary injury due to too long expansion part.

[0017] 2. The utility model provides through holes and hollow structures on the long legs, so that the cold light source can be passed into the long legs and connected to the lens. The light emitted by the cold light source can avoid blind spots in the incision, thereby improving the efficiency of the operation.

[0018] 3. The utility model is convenient for absorbing water from the bottom of the water medium by arranging a suction device interface at the short leg. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the single-hole dual-medium automatic retractor for spinal endoscopic surgery proposed by the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the long leg proposed by the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the positioning device proposed by the utility model;

[0022] Figure 4 This is a structural schematic diagram of the first clamp handle proposed by the utility model;

[0023] Figure 5 This is a schematic structural diagram of the second clamp handle proposed by the utility model;

[0024] The above drawings include the following reference numerals:

[0025] 10. First clamp handle; 11. First handle; 12. First notch; 13. First ratchet; 20. Second clamp handle; 21. Second handle; 22. Second notch; 30. Locking mechanism; 31. Second ratchet; 40. Long leg; 41. Through hole; 50. Short leg; 60. Pin; 70. Suction device interface; 80. Lens; 90. Cold light source. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present utility model will be described clearly and completely below in conjunction with the drawings in the embodiments. Obviously, the described embodiments are only a part of the embodiments, rather than all the embodiments.

[0027] In the description of the present invention, it should be understood that the terms "front", "rear", "left", "right", "up", "down", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention. Example 1

[0028] like Figure 1As shown, the present application discloses a single-hole dual-medium spinal endoscopic surgery automatic retractor, comprising: a first clamp handle 10 and a second clamp handle 20, the first clamp handle 10 and the second clamp handle 20 are mirror-symmetrical and have a total length of about 22 cm, a first handle 11 is welded at one end of the first clamp handle 10, the first handle 11 is a circle structure that is easy to hold by hand, and a long leg 40 is welded at the other end, the length of the long leg is about 7 cm, and its 7 cm length is consistent with one side of the incision of the UBE surgery, so that the distraction effect is better; a second handle 21 is welded at one end of the second clamp handle 20, and a short leg 50 is welded at the other end, wherein the length of the short leg 50 is 3 cm, and its 3 cm length is consistent with the other side of the incision of the UBE surgery, and the incision will not be secondary damaged due to the excessive length of the distraction leg;

[0029] Furthermore, the long leg 40 is a hollow structure and a through hole 41 is connected to its side wall. The inner diameter of the long leg 40 is larger than the outer diameter of the cold light source 90, that is, the cold light source 90 can pass through the long leg 40. The through hole 41 is located at the middle end of the long leg 40. A thread is provided in the through hole 41. The thread is used to detachably connect the lens 80 to the long leg 40. After the cold light source 90 passes through the long leg 40 and is connected with the lens 80, it can emit cold light to illuminate the blind spots of the operation.

[0030] like Figure 4 and Figure 5 As shown, two cylinders of equal size are welded at the connection between the handle body of the first pliers handle 10 and the first handle 11. The distance between the two cylinders is large enough to allow another cylinder of equal size to be inserted again, and a circular hole matching the pin 60 is provided in the center of each cylinder; a cylinder is welded at the connection between the handle body of the second pliers handle 20 and the second handle 21, and a circular hole matching the pin 60 is provided in the center of the cylinder, and the size of the cylinder is equal to the size of the cylinder welded at the connection between the handle body of the first pliers handle 10 and the first handle 11; the first pliers handle 10 and the second pliers handle 20 are hinged by inserting the pin 60 into the circular hole in the cylinder.

[0031] Furthermore, a locking mechanism 30 is provided between the first pliers handle 10 and the second pliers handle 20. The locking mechanism 30 as a whole is approximately a quarter of an arc structure, and a second ratchet 31 is provided on the inner side thereof. The tooth height and tooth spacing of the second ratchet 31 are equal; a second notch 22 adapted to one end of the locking mechanism 30 is provided between the hinge and the grip of the second pliers handle 20, and one end of the locking mechanism 30 is welded to the second pliers handle 20 at the second notch 22; a first notch 12 adapted to and passing through the other end of the locking mechanism 30 is provided between the hinge and the grip of the first pliers handle 10, and a first ratchet 13 matching the second ratchet 31 is provided at the bottom of the first notch 12. By clamping the second ratchet 31 on the locking mechanism 30 and the first ratchet 13 on the first pliers handle 10, the distance between the first pliers handle 10 and the second pliers handle 20 can be adjusted and fixed by adjusting and fixing the spread position of the first handle 11 and the second handle 21.

[0032] Furthermore, if Figure 1 As shown, the handle bodies of the first clamp handle 10 and the second clamp handle 20 both have an outwardly extending curvature, and the curvature is set to prevent the handle bodies of the first clamp handle 10 and the second clamp handle 20 from blocking the surgical field of view.

[0033] Furthermore, an aspirator interface 70 is provided at the short leg 50. Since the OBE surgery introduces minimally invasive spinal endoscopy into the traditional posterior lumbar surgery, it overcomes the deficiency of the single medium of the previous spinal endoscope and changes it to two media, air and water. Therefore, the aspirator interface 70 is connected to facilitate water absorption from under the water medium. Example 2

[0034] The rest of the structure of this embodiment is the same as that of Embodiment 1. The difference between this embodiment and Embodiment 1 is that Teflon is coated on the long leg 40 and the short leg 50. Teflon is a fully fluorinated polymer and a high molecular material with a very low friction coefficient. Teflon is usually called a coating material to improve the surface smoothness and friction coefficient of machine parts. Therefore, Teflon can reduce the friction of the long leg 40 and the short leg 50 to open the OBE surgical incision, thereby avoiding rupture of the OBE surgical incision due to excessive friction. Example 3

[0035] The rest of the structure of this embodiment is the same as that of embodiment 1. The difference between this embodiment and embodiment 1 is that a rotary bearing is provided at the connection between the first clamp handle 10 and the long leg 40 so that the long leg 40 can rotate, thereby adjusting the lighting angle of the cold light source.

[0036] The use method of the utility model of the single-hole dual-medium spinal endoscopic surgery automatic retractor:

[0037] During the OBE operation, the patient lies prone on a body frame after general anesthesia. A longitudinal skin incision of about 3 cm is made in the middle of the posterior L4-L5 of the patient. The skin, subcutaneous tissue, deep fascia, supraspinal ligament, and erector spinae muscle are cut along the right side of the spinous process to expose the lamina and upper and lower articular process joints of the L4 vertebra. The right side of the spinous process is retained to the lumbosacral fascia. Then, the first handle 11 and the second handle 21 are held by hand to open the single-hole dual-medium endoscopic spinal surgery automatic retractor to a suitable position, and the long leg 40 of the single-hole dual-medium endoscopic spinal surgery automatic retractor is inserted into the spinous process. Insert the short leg 50 of the single-hole dual-medium spinal endoscopic automatic retractor into the 3-cm side of the OBE surgical incision, lock the second ratchet 31 of the locking mechanism 30 with the first ratchet 13 on the first clamp handle 10 at the appropriate position, and then insert a MARK nail into the right pedicle of L4-L5. Under the monitoring of the air medium endoscope, use a nerve dissector to carefully separate adhesions, perform one-time bipolar electrocoagulation to stop bleeding, remove the hyperplastic tissue around the articular process, and expose the vertebral plate on one side of L4 / 5. Ultrasonic bone knife was used to remove part of L4 / 5 vertebral lamina and articular process, and nerve dissector was used to carefully separate adhesions, remove yellow ligament and vertebral lamina bone and other tissues to expose the spinal canal; the dura mater sac and nerve roots were pulled inward, and the percutaneous endoscopic instrument was connected. Radiofrequency ablation was performed under the water medium to stop bleeding. After repeated confirmation that the dorsal decompression of the nerve roots was sufficient, they were protected and the contralateral spinal canal was decompressed as needed under the microscope; the dura mater sac and nerve roots were pulled open under the air medium, the intervertebral space was processed, the nucleus pulposus was removed with nucleus pulposus forceps, and the L4 / 5 intervertebral disc and endplate tissues were thoroughly removed with reamers and bone curettes of different models. The upper and lower endplates were processed to the bone to ensure good bleeding of the bone graft bed; the nerve roots were explored again to confirm that the nerve roots were sufficiently decompressed, the wounds were rinsed, and the L4 / 5 An appropriate amount of artificial bone particles / autologous bone particles are implanted and compacted between the vertebrae, and a expandable cage is inserted for intervertebral fusion; the MARK screws are removed, and pedicle screws are inserted and fixed with an upper connecting rod; pedicle screws are then implanted through the muscle gap on the opposite side, and the screw size is 6.5mm×4.5cm. Under fluoroscopy, the pedicle screws are in a good position; the connecting rod is installed, and the vertebral body is reduced by gradually tightening the nut, and the C-arm fluoroscopy shows that the position is good; the nerve roots are checked again under the intervertebral foramina endoscopic examination to see that there is no compression, the spinal canal is completely hemostatic (the bleeding area is filled with absorbable hemostatic gauze), the surgical cavity is flushed with normal saline, the single-hole double-medium spinal endoscopic surgery automatic retractor is removed, the incision is sutured layer by layer after drainage is placed, and finally a bandage is performed.

[0038] If there is a blind spot in the incision during surgery, the cold light source line 90 can be inserted into the through hole 41 in the long leg 40 before the operation, and then the cold light source line 90 can be connected to the lens 80, and the lens 80 can be tightened to the long leg 40 through the thread in the through hole 41. After the cold light source line 90 and the lens 80 are fixed, the long leg 40 of the single-hole dual-medium spinal endoscopic surgery automatic retractor is inserted into the 7cm side of the OBE surgical incision, and the short leg 50 of the single-hole dual-medium spinal endoscopic surgery automatic retractor is inserted into the 3cm side of the OBE surgical incision. After the second ratchet 31 of the locking mechanism 30 is engaged and locked with the first ratchet 13 on the first clamp handle 10 at the appropriate position, turning on the cold light source switch can illuminate the blind spot of the surgical shadowless lamp, so that the field of vision during the operation is clear and bright.

[0039] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. Single-hole dual-medium spinal endoscopic surgery automatic retractor, including: A first pliers handle (10) and a second pliers handle (20) are hingedly connected to each other, wherein a first handle (11) is provided at one end of the first pliers handle (10), and a second handle (21) is provided at one end of the second pliers handle (20), and wherein a long leg (40) is provided at the other end of the first pliers handle (10), and a short leg (50) is provided at the other end of the second pliers handle (20).

2. The single-hole dual-medium automatic retractor for spinal endoscopic surgery according to claim 1 is characterized in that: The long leg (40) is a hollow structure and its side wall is connected to a through hole (41); a cold light source (90) is sleeved in the hollow structure of the long leg (40); and the through hole (41) is connected to a lens (80).

3. The single-hole dual-medium automatic retractor for spinal endoscopic surgery according to claim 1 is characterized in that: A locking mechanism (30) is provided between the first pliers handle (10) and the second pliers handle (20), and the locking mechanism (30) is used to fix the open position of the first handle (11) and the second handle (21).

4. The single-hole dual-medium automatic retractor for spinal endoscopic surgery according to claim 1, characterized in that: The handle bodies of the first clamp handle (10) and the second clamp handle (20) both have an outwardly extending arc.

5. The single-hole dual-medium automatic retractor for spinal endoscopic surgery according to claim 1, characterized in that: The short leg (50) is provided with a suction device interface (70).

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