CN109875619B

CN109875619B - A kind of tissue retractor for spine surgery

Info

Publication number: CN109875619B
Application number: CN201910224374.4A
Authority: CN
Inventors: 俞伟杨; 何登伟; 李巧平; 吴忠伟; 陈剑
Original assignee: Lishui Central Hospital
Current assignee: Lishui Central Hospital
Priority date: 2019-03-23
Filing date: 2019-03-23
Publication date: 2021-04-06
Anticipated expiration: 2039-03-23
Also published as: CN109875619A

Abstract

The invention relates to a tissue retractor for spinal surgery, which relates to the technical field of medical instruments and comprises a retracting mechanism, a bed board fixing mechanism, a first right-angle fixing seat and a second right-angle fixing seat; the right side of the first right-angle fixing seat is provided with a second right-angle fixing seat, and the right end of the horizontal end of the first right-angle fixing seat is rotatably connected with the upper end of the vertical end of the second right-angle fixing seat through a rotating shaft; be provided with retractor mechanism on the horizontal end of a right angle fixing base, can make things convenient for medical personnel to carry out the treatment of performing the operation to patient injured backbone position, the doctor of being convenient for puts the nail, can increase the field of vision that the affected part exposes, need not that medical personnel hold, increased the holistic stability of device.

Description

Tissue retractor for spinal surgery

Technical Field

The invention relates to the technical field of medical instruments, in particular to a tissue retractor for spinal surgery.

Background

During spinal surgery, a doctor usually needs to separate soft tissues around the spine from the spine at a surgical site to implant screws and the like to assist in fixation; in the traditional tissue retractor, the retractor is arranged to be linear in order to be convenient to separate and operate; however, in practical use, the linear retractor is very inconvenient for doctors to place nails, and in the process of operation, the retractor often falls off the hand, and the stability of the whole device is not enough, so that the normal operation of the operation is influenced, and improvement is needed.

Disclosure of Invention

Aiming at the defects and shortcomings of the prior art, the invention provides the tissue retractor for spinal surgery, which is simple in structure, reasonable in design and convenient to use, can facilitate medical staff to carry out surgical treatment on the injured spinal part of a patient, is convenient for doctors to place nails, can increase the visual field exposed at the affected part, does not need to be held by the medical staff, and increases the overall stability of the device.

In order to achieve the purpose, the invention adopts the technical scheme that: the bed comprises a retracting mechanism, a bed board fixing mechanism, a first right-angle fixing seat and a second right-angle fixing seat; the right side of the first right-angle fixing seat is provided with a second right-angle fixing seat, and the right end of the horizontal end of the first right-angle fixing seat is rotatably connected with the upper end of the vertical end of the second right-angle fixing seat through a rotating shaft; a retraction mechanism is arranged at the horizontal end of the first right-angle fixed seat;

the retracting mechanism comprises a sliding rail, a sliding block, a door-shaped fixing block, a limiting hand screw, a first clamp leg, a second clamp leg, a retracting plate and a telescopic rod; a slide rail is fixedly arranged on the bottom side wall of the horizontal end of the first right-angle fixing seat, and a slide block is arranged on the slide rail in a sliding manner; the door-shaped fixed block is movably erected at the upper part of the first right-angle fixed seat, and the bottoms of the front side wall and the rear side wall of the door-shaped fixed block are fixedly connected with the front side and the rear side of the upper part of the sliding block; the upper part of the door-shaped fixing block is rotatably provided with a limiting hand screw through threads, and the bottom end of the limiting hand screw is abutted against the upper side wall of the first right-angle fixing seat; the first tong leg and the second tong leg are arranged in a crossed manner, and the crossed parts of the first tong leg and the second tong leg are rotationally connected through a pin shaft; the upper end of the pin shaft is fixedly arranged on the bottom side surface of the sliding block after rotating to penetrate through the upper side wall of the first clamp leg; a telescopic rod is arranged between the front ends of the first tong leg and the second tong leg, the left end of the telescopic rod is hinged with the right side wall of the front end of the second tong leg, and the right end of the telescopic rod is hinged with the left side wall of the front end of the first tong leg; the bottom of the rear end of the first clamp leg and the bottom of the rear end of the second clamp leg are both fixedly provided with a pulling plate;

the bed plate fixing mechanism comprises a clamping seat, a screw rod, a first base plate, a second base plate, a fastening nut, a fastening hand screw, a guide rod, a limiting cap and a compression spring; a clamping seat is arranged on the right side of the vertical end of the first right-angle fixing seat, and a screw is vertically and fixedly arranged on the left side wall of the clamping seat; a waist-shaped hole is fixedly formed in the side wall of the vertical end of the first right-angle fixing seat, a fastening nut is rotatably connected to the left end of the screw rod through threads after the left end of the screw rod penetrates through the waist-shaped hole, and the right side wall of the fastening nut is abutted to the left side wall of the first right-angle fixing seat; a fastening hand screw is rotatably arranged on the bottom side wall of the clamping seat in a penetrating manner through threads, a first base plate is rotatably arranged at the upper end of the fastening hand screw through a bearing, and the first base plate is arranged in the middle of the clamping seat; the utility model discloses a set up compression spring, compression spring's lower extreme and the setting of the side of going up of No. two right angle fixing base, the activity is inserted and is equipped with the guide bar on the horizontal end of No. two right angle fixing base, the lower extreme fixedly connected with stop cap of guide bar, and stop cap and No. two right angle fixing base's the inconsistent setting of the end lateral wall, the fixed backing plate that is provided with in upper end of guide bar, the cover is equipped with compression spring on the guide bar of No. two backing plates downside, compression spring's upper end and the inconsistent setting in bottom of.

Further, the right side wall of the vertical end of the card seat and the first right-angle fixing seat is fixedly provided with a rubber gasket, and the rubber gasket enables the fastening nut to be fastened more and not easy to loosen in the process of locking the card seat and the first right-angle fixing seat.

Furthermore, the telescopic rod is formed by sleeving a first support rod and a second support rod, the left end of the first support rod is hinged with the right side wall of the front end of the second clamp leg, the right end of the second support rod is hinged with the left side wall of the front end of the first clamp leg, and the right end of the first support rod is inserted into the left end of the second support rod and is fixedly connected through a bolt; when medical personnel struts the operation position, the sleeve joint structure of the first supporting rod and the second supporting rod is more convenient to adjust the distance between the first forceps leg and the second forceps leg.

Furthermore, the bottom of the traction plate is arc-shaped, and the traction plate on the first forceps leg and the traction plate on the second forceps leg are oppositely arranged in the arc bending direction; the radian of the retractor plate is 120-150 degrees, and the arc retractor plate can expose the operation visual field more widely when retracting soft tissues.

Furthermore, a separation head is fixedly arranged at the rear end of the traction plate; the end part of the separation head is arranged in a sharp shape; when medical personnel are retracting the operation position, the separation head exposes the operation position, and the whole retracting mechanism is conveniently positioned.

Furthermore, the limiting cap is replaced by a pull ring; when the second base plate pad is arranged at the bottom of the bed plate, the second base plate pad is pulled downwards through the pull ring, so that the operation of medical staff is facilitated.

The working principle of the invention is as follows: the patient needing the spinal surgery adopts the prone position lying on the operating bed, then the device is fixed on a bed plate of the operating bed through a bed plate fixing mechanism, a right-angle fixing seat II is rotated anticlockwise through a rotating shaft, an included angle between the right-angle fixing seat I and the right-angle fixing seat II is increased, then the clamping seat is clamped on one side of the bed plate, the clamping seat is fixed through a locking and fastening nut, a base plate I is abutted to the bottom of the bed plate through the rotation and fastening of a hand, the right-angle fixing seat II is rotated and returned, the base plate II is abutted to the bottom of the bed plate through the vertical reverse compression force of a compression spring, the right-angle fixing seat I and the right-angle fixing seat II are fixed at the moment, the position of a traction plate is adjusted to the position of an operation opening through the position of a sliding slide block on a slide rail, and then a limiting hand is; the retractor plates are respectively supported on the soft tissues at the two sides of the operation opening, and the distance between the rear ends of the first forceps leg and the rear ends of the second forceps leg is adjusted by manually adjusting the length of the telescopic rods, so that the distance for retracting the operation opening is controlled.

After adopting the structure, the invention has the beneficial effects that:

1. the expansion angles of the traction plates on the first forceps leg and the second forceps leg are controlled by the telescopic rods, so that medical personnel can conveniently perform surgical treatment on the injured spinal part of the patient, doctors can conveniently place nails, and the exposed visual field of the affected part can be increased;

2. the device is integrally fixed on the bed board through the bed board fixing mechanism, so that the medical staff is not required to hold the device by hands, and the overall stability of the device is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a left side view of fig. 1.

Fig. 3 is a top view of fig. 1.

Fig. 4 is a schematic view of a connection structure of the first tong leg, the second tong leg and the pin shaft of the present invention.

Fig. 5 is a schematic view of a connection structure of the first right-angle fixing seat and the second right-angle fixing seat of the invention.

Fig. 6 is a schematic view of the connection structure of the slide rail, the slide block, the limiting hand screw and the door-shaped fixing block of the invention.

Fig. 7 is a schematic structural diagram of the second embodiment.

Description of reference numerals:

the medical bed board retractor comprises a retracting mechanism 1, a sliding rail 1-1, a sliding block 1-2, a door-shaped fixing block 1-3, a limiting hand screw 1-4, a first tong leg 1-5, a second tong leg 1-6, a retracting plate 1-7, an expansion rod 1-8, a first supporting rod 1-8-1, a second supporting rod 1-8-2, a pin shaft 1-9, a bed board fixing mechanism 2, a clamping seat 2-1, a screw rod 2-2, a first cushion plate 2-3, a second cushion plate 2-4, a fastening nut 2-5, a fastening hand screw 2-6, a guide rod 2-7, a limiting cap 2-8, a compression spring 2-9, a first right-angle fixing seat 3, a second right-angle fixing seat 4, a rotating shaft 5, a waist-shaped hole 6, a rubber gasket 7, a separating head 8 and a pull ring 9.

Detailed Description

The invention will be further described with reference to the accompanying drawings.

The first embodiment is as follows:

referring to fig. 1 to 6, the technical solution adopted by the present embodiment is: the bed comprises a retracting mechanism 1, a bed board fixing mechanism 2, a first right-angle fixing seat 3 and a second right-angle fixing seat 4; the right side of the first right-angle fixing seat 3 is provided with a second right-angle fixing seat 4, the right end of the horizontal end of the first right-angle fixing seat 3 is rotatably connected with the upper end of the vertical end of the second right-angle fixing seat 4 through a rotating shaft 5, the first right-angle fixing seat 3 and the second right-angle fixing seat 4 are both formed by hot bending of medical metal materials, the rotating shaft 5 is in tight friction connection with the first right-angle fixing seat 3 and the second right-angle fixing seat 4, and a certain force is required to be applied during rotation so that the second right-angle fixing seat 4 can rotate anticlockwise; a retraction mechanism 1 is arranged at the horizontal end of the first right-angle fixed seat 3;

the retracting mechanism 1 comprises a sliding rail 1-1, a sliding block 1-2, a door-shaped fixing block 1-3, a limiting hand screw 1-4, a first tong leg 1-5, a second tong leg 1-6, a retracting plate 1-7 and a telescopic rod 1-8; a slide rail 1-1 is fixedly arranged on the bottom side wall of the horizontal end of the first right-angle fixed seat 3 through a bolt, and a slide block 1-2 is arranged on the slide rail 1-1 in a sliding manner; the door-shaped fixed block 1-3 is movably erected at the upper part of the first right-angle fixed seat 3, and the bottoms of the front side wall and the rear side wall of the door-shaped fixed block 1-3 are fixedly welded with the front side and the rear side of the upper part of the sliding block 1-2; the upper part of the door-shaped fixed block 1-3 is provided with a limiting hand screw 1-4 through thread rotation, the bottom end of the limiting hand screw 1-4 is arranged in a manner of abutting against the upper side wall of the first right-angle fixed seat 3, when the limiting hand screw 1-4 is loosened, the sliding block 1-2 drives the door-shaped fixed block 1-3 to slide to any position on the sliding rail 1-1, and when the limiting hand screw 1-4 is tightened, the door-shaped fixed block 1-3 can be fixed; the first forceps leg 1-5 and the second forceps leg 1-6 are arranged in a crossed manner, the crossed parts of the first forceps leg 1-5 and the second forceps leg 1-6 are rotatably connected through a pin shaft 1-9, and the materials, the connection structures and the principles of the first forceps leg 1-5, the second forceps leg 1-6 and the pin shaft 1-9 are the same as those of the medical forceps in the prior art; the upper end of the pin shaft 1-9 is fixedly welded on the bottom side surface of the sliding block 1-2 after rotating to penetrate through the upper side wall of the first clamp leg 1-5, and the first clamp leg 1-5 and the second clamp leg 1-6 can freely rotate around the pin shaft 1-9; a telescopic rod 1-8 is arranged between the front ends of the first tong leg 1-5 and the second tong leg 1-6, the left end of the telescopic rod 1-8 is hinged with the right side wall of the front end of the second tong leg 1-6, the right end of the telescopic rod 1-8 is hinged with the left side wall of the front end of the first tong leg 1-5, the hinged structure is formed by a shaft seat with a central shaft in the middle, and the central shaft is arranged at the two ends of the telescopic rod 1-8 in a penetrating way; the bottom of the rear end of the first forceps leg 1-5 and the bottom of the rear end of the second forceps leg 1-6 are fixedly welded with a distraction plate 1-7, and the edges of the distraction plate 1-7 are polished smoothly to prevent soft tissues from being injured;

the bed plate fixing mechanism 2 comprises a clamping seat 2-1, a screw rod 2-2, a first backing plate 2-3, a second backing plate 2-4, a fastening nut 2-5, a fastening hand screw 2-6, a guide rod 2-7, a limiting cap 2-8 and a compression spring 2-9; a clamping seat 2-1 is arranged on the right side of the vertical end of the first right-angle fixing seat 3, and a screw rod 2-2 is vertically and fixedly welded on the left side wall of the clamping seat 2-1; a waist-shaped hole 6 is fixedly formed in the side wall of the vertical end of the first right-angle fixing seat 3, a fastening nut 2-5 is rotatably connected to the left end of the screw rod 2-2 through threads after the left end of the screw rod passes through the waist-shaped hole 6, and the right side wall of the fastening nut 2-5 is arranged in a manner of being abutted to the left side wall of the first right-angle fixing seat 3, so that the bed plates with different thicknesses can be conveniently matched; a fastening hand screw 2-6 is rotatably arranged on the bottom side wall of the clamping seat 2-1 in a penetrating manner through threads, a first base plate 2-3 is rotatably arranged at the upper end of the fastening hand screw 2-6 through a bearing, the first base plate 2-3 is arranged in the middle of the clamping seat 2-1, and the bed plate is clamped between the upper surface part of the first base plate 2-3 and the inner top part of the clamping seat 2-1, so that the device is conveniently and integrally fixed on a bed; a guide rod 2-7 is movably inserted at the horizontal end of the second right-angle fixing seat 4, a limit cap 2-8 is fixedly connected at the lower end of the guide rod 2-7, the limit cap 2-8 is arranged in a manner of being abutted against the bottom side wall of the second right-angle fixing seat 4, a second cushion plate 2-4 is fixedly arranged at the upper end of the guide rod 2-7, a compression spring 2-9 is sleeved on the guide rod 2-7 at the lower side of the second cushion plate 2-4, the upper end of the compression spring 2-9 is arranged in a manner of being abutted against the bottom of the second cushion plate 2-4, the lower end of the compression spring 2-9 is arranged in a manner of being abutted against the upper side surface of the second right-angle fixing seat 4, the compression spring 2-9 provides a vertical reverse compression force, the second cushion plate 2-4 can be tightly abutted against the bottom of the bed plate, and the, the second right-angle fixed seat 4 cannot be rotated.

Furthermore, a rubber gasket 7 is arranged between the clamping seat 2-1 and the right side wall of the vertical end of the first right-angle fixing seat 3, and the rubber gasket 7 enables the fastening nut 2-5 to be fastened more and not to loosen easily in the process of locking the clamping seat 2-1 and the first right-angle fixing seat 3.

Furthermore, the telescopic rod 1-8 is formed by sleeving a first support rod 1-8-1 and a second support rod 1-8-2, the left end of the first support rod 1-8-1 is hinged with the right side wall of the front end of the second clamp leg 1-6, the right end of the second support rod 1-8-2 is hinged with the left side wall of the front end of the first clamp leg 1-5, and the right end of the first support rod 1-8-1 is inserted into the left end of the second support rod 1-8-2 and is fixedly connected through a bolt; when medical staff perform operation position distraction, the sleeve joint structure of the first supporting rod 1-8-1 and the second supporting rod 1-8-2 is more convenient to adjust the distance between the first forceps leg 1-5 and the second forceps leg 1-6.

Furthermore, the bottom of the traction plate 1-7 is arc-shaped, and the traction plate 1-7 on the first tong leg 1-5 and the traction plate 1-7 on the second tong leg 1-6 are oppositely arranged in the arc bending direction; the radian of the distraction plates 1-7 is set to be 120-150 degrees, and the arc distraction plates 1-7 expose the operation visual field more widely when the distraction plates retract soft tissues.

Furthermore, a separation head 8 is fixedly welded at the rear end of each of the retracting plates 1-7, and the separation head 8 is made of a metal material of a medical cutter; the end of the separating head 8 is arranged in a sharp shape; when medical personnel are retracting the operation position, the separation head 8 exposes the operation position, and the whole retracting mechanism 1 is conveniently positioned.

The working principle of the specific embodiment is as follows: a patient needing spine surgery lies prone on an operating bed, the device is fixed on a bed plate of the operating bed through a bed plate fixing mechanism 2, a second right-angle fixing seat 4 rotates anticlockwise through a rotating shaft 5, an included angle between the first right-angle fixing seat 3 and the second right-angle fixing seat 4 is increased, then a clamping seat 2-1 is clamped on one side of the bed plate, the clamping seat 2-1 is fixed through a locking fastening nut 2-5, a first backing plate 2-3 is arranged in a mode of abutting against the bottom of the bed plate through a rotary fastening hand 2-6, the second right-angle fixing seat 4 rotates to return, the second backing plate 2-4 abuts against the bottom of the bed plate through a vertical reverse compression force of a compression spring 2-9, the first right-angle fixing seat 3 and the second right-angle fixing seat 4 are fixed at the moment, and the sliding block 1-2 is arranged on a sliding rail 1-1, adjusting the positions of the distraction plates 1-7 to the position of an operation opening, and then screwing the limiting hand 1-4 tightly; the retracting plates 1 to 7 are respectively supported on the soft tissues at the two sides of the operation opening, the distance between the rear ends of the first forceps leg 1 to 5 and the rear end of the second forceps leg 1 to 6 is adjusted by manually adjusting the length of the telescopic rods 1 to 8, and the retracting distance of the operation opening is further controlled

After adopting above-mentioned structure, this embodiment beneficial effect does:

1. the expansion angles of the traction plates 1-7 on the first forceps leg 1-5 and the second forceps leg 1-6 are controlled by the telescopic rods 1-8, so that medical workers can conveniently perform surgical treatment on the injured spinal part of a patient, doctors can conveniently place nails, and the exposed visual field of an affected part can be increased;

2. the device is integrally fixed on the bed board through the bed board fixing mechanism 2, so that the device is not required to be held by medical staff, and the overall stability of the device is improved.

The second embodiment is as follows:

referring to fig. 7, the present embodiment differs from the first embodiment in that: the limiting caps 2-8 are replaced by pull rings 9; when the second base plate 2-4 is arranged at the bottom of the bed plate, the second base plate 2-4 is pulled downwards through the pull ring 9, so that the operation of medical staff is facilitated, and the second base plate 2-4 is not required to be pressed downwards vigorously.

The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A tissue retractor for spinal surgery, characterized in that: it comprises a retraction mechanism (1), a bed plate fixing mechanism (2), a No. 1 right-angle fixing seat (3), and a No. 2 right-angle fixing seat (4); The right side of the No. 1 right-angle fixing seat (3) is provided with a No. 2 right-angle fixing seat (4). The right end of the horizontal end of the No. 1 right-angle fixing seat (3) and the upper end of the vertical end of the No. 2 right-angle fixing seat (4) pass through the rotating shaft (5 ) rotary connection; a retraction mechanism (1) is arranged on the horizontal end of the No. 1 right-angle fixing seat (3);

The retraction mechanism (1) includes a slide rail (1-1), a sliding block (1-2), a "door"-shaped fixing block (1-3), a limit hand screw (1-4), a No. Clamp legs (1-5), No. 2 clamp legs (1-6), retractor plates (1-7), telescopic rods (1-8); on the bottom wall of the horizontal end of the No. 1 right-angle fixing seat (3) A sliding rail (1-1) is fixedly arranged, and a sliding block (1-2) is slidably arranged on the sliding rail (1-1); the "door"-shaped fixing block (1-3) is movably erected on the No. 3), and the bottom of the front and rear side walls of the "door"-shaped fixing block (1-3) is fixedly connected with the front and rear sides of the upper part of the slider (1-2); the "door"-shaped fixing block (1-3) The upper part of the ) is set by thread rotation to set the limit hand screw (1-4), and the bottom end of the limit hand screw (1-4) is set against the upper side wall of the No. 1 right-angle fixing seat (3); the No. 1 clamp leg (1-5) and No. 2 pliers legs (1-6) are crossed, and the intersecting parts are connected by a pin shaft (1-9) in rotation; the upper end of the pin shaft (1-9) rotates through the No. 1 pliers After the upper side wall of the leg (1-5), it is fixedly arranged on the bottom side of the slider (1-2); A telescopic rod (1-8) is provided, the left end of the telescopic rod (1-8) is hinged with the right side wall of the front end of the No. 2 clamp leg (1-6), and the right end of the telescopic rod (1-8) is connected with the No. 1 clamp The left side wall of the front end of the leg (1-5) is hinged; the bottom of the rear end of the No. 1 clamp leg (1-5) and the bottom of the rear end of the No. 2 clamp leg (1-6) are fixedly provided with a retractor plate (1-7). ); the bottom of the retractor plate (1-7) is set in an arc shape, and the retractor plate (1-7) on the No. 1 clamp leg (1-5) and the No. 2 clamp leg (1-6) The arc-shaped bending directions of the retractor plates (1-7) are set in opposite directions; the arc of the retractor plate (1-7) is set at 120°-150°, and the arc-shaped retractor plates (1-7) ) When the soft tissue is retracted, the surgical field of view is exposed more widely; the rear end of the retractor plate (1-7) is fixedly provided with a dividing head (8); the end of the dividing head (8) is set in a sharp shape When the medical staff is retracting the operating position, the separating head (8) exposes the surgical site, which facilitates the overall positioning of the retracting mechanism (1). 1-8-1) and the No. 2 support rod (1-8-2) are socketed to form, the left end of the No. 1 support rod (1-8-1) and the right side wall of the front end of the No. 2 clamp leg (1-6) The right end of the No. 2 support rod (1-8-2) is hinged with the left side wall of the front end of the No. 1 clamp leg (1-5); the right end of the No. 1 support rod (1-8-1) is inserted in the The left end of the No. 2 pole (1-8-2) is connected and fixed by bolts; when the medical staff opens the operation position, the No. -2) The socket connection structure is more convenient to adjust the distance between the No. 1 clamp leg (1-5) and the No. 2 clamp leg (1-6);

The bed board fixing mechanism (2) includes a card seat (2-1), a screw (2-2), a No. 1 backing plate (2-3), a No. 2 backing board (2-4), and a fastening nut (2 -5), tighten the thumb screw (2-6), guide rod (2-7), limit cap (2-8), compression spring (2-9); A card seat (2-1) is arranged on the right side, and a screw (2-2) is vertically fixed on the left side wall of the card seat (2-1); A waist-shaped hole (6) is fixedly opened, and after the left end of the screw rod (2-2) passes through the waist-shaped hole (6), a tightening nut (2-5) is connected by thread rotation, and the tightening nut (2-5) ) on the right side wall and the left side wall of the No. 1 right-angle fixing seat (3); A No. 1 backing plate (2-3) is installed on the upper end of the tightening hand screw (2-6) through the bearing rotation, and No. 1 backing plate (2-3) is arranged in the middle of the card seat (2-1); No. 2 is fixed at a right angle A guide rod (2-7) is movably inserted on the horizontal end of the seat (4), and the lower end of the guide rod (2-7) is fixedly connected with a limit cap (2-8), which is connected with the second The bottom side walls of the No. 2 right-angle fixing seat (4) are set against each other, and the upper end of the guide rod (2-7) is fixedly provided with a No. 2 pad (2-4), which guides the lower side of the No. 2 pad (2-4). A compression spring (2-9) is sleeved on the rod (2-7), and the upper end of the compression spring (2-9) is set against the bottom of the No. 2 backing plate (2-4), and the compression spring (2-9) A rubber gasket (7) is fixed between the card holder (2-1) and the right side wall of the vertical end of the No. 1 right-angle fixing seat (3). , the rubber gasket (7) makes the tightening nut (2-5) more tightened and not easy to loosen during the process of locking the card seat (2-1) and the No. 1 right-angle fixing seat (3).

2. A tissue retractor for spinal surgery according to claim 1, characterized in that: the limiting cap (2-8) is replaced with a pull ring (9); 4) When the pad is set at the bottom of the bed board, pull down the No. 2 pad (2-4) through the pull ring (9), which is convenient for medical staff to operate.

3. A kind of tissue retractor for spinal surgery according to claim 1, is characterized in that: its working principle: what the patient who needs spinal surgery adopts is lying on the operating bed in prone position, and then through the bed plate fixing mechanism (2. ) Fix the device on the bed of the operating bed, and rotate the No. 2 right-angle fixing seat (4) through the rotating shaft (5) counterclockwise, so that the space between the No. 1 right-angle fixing seat (3) and the No. Increase the included angle, then clamp the card holder (2-1) on one side of the bed board, fix the card holder (2-1) by locking the tightening nut (2-5), and screw the card holder (2-1) by rotating the tightening nut (2-5). -6), so that the No. 1 backing plate (2-3) is set against the bottom of the bed board, and the No. 2 right-angle fixing seat (4) is rotated back to its original position. 9) The vertical reverse compressive force is placed on the bottom of the bed board. At this time, the No. 1 right-angle fixing seat (3) and the No. 2 right-angle fixing seat (4) are fixed, and the sliding block (1-2) slides in the sliding block (1-2). position on the rail (1-1), adjust the position of the retractor plate (1-7) to the position of the surgical port, then tighten the limit screw (1-4); put the retractor plate (1-7) Supported on the soft tissues on both sides of the surgical opening, manually adjust the length of the telescopic rod (1-8) to adjust the distance between the rear ends of the No. 1 forceps leg (1-5) and the No. 2 forceps leg (1-6). distance, and then control the distance of surgical incision retraction.