Minimally invasive spinal surgery auxiliary device

Abstract

The present invention belongs to the technical field of spinal surgery, and specifically relates to a minimally invasive spinal surgery auxiliary device, comprising an annular bracket and two fixing frames detachably connected to the annular bracket, the annular bracket is annular tubular, the annular bracket is slidably connected to two alignment mounting plates, arc angle grooves are provided on both sides of the two alignment mounting plates, one of the arc angle grooves slides through the annular bracket, a through groove is provided in the middle of the alignment mounting plate, a locking assembly connected to the annular bracket is installed inside the through groove, a circular groove is provided on one side of the two alignment mounting plates close to each other, and a spreading assembly is symmetrically installed on the alignment mounting plates; the present invention can abut the sleeve through the two alignment mounting plates, thereby making the center of the annular bracket coincide with the sleeve of the wound, facilitating the subsequent pulling operation of inserting the spreading forceps, thereby accurately leaking the affected part of the spine that needs surgery, and avoiding the random pulling of the spreading forceps without positioning, which makes it inconvenient to find the precise spinal operation position.

Description

Technical Field

[0001] The present invention belongs to the technical field of spinal surgery, and in particular relates to a minimally invasive spinal surgery auxiliary device. Background Art

[0002] Minimally invasive spinal surgery means avoiding large incisions under certain medical risks, using tiny incisions or puncture channels, applying special instruments and devices, and reaching the lesion from the normal anatomical structure under the monitoring of imaging instruments or the guidance of navigation technology. It uses a variety of miniature manual or electric instruments and equipment to complete the entire surgical process under visual conditions, with the goal of achieving smaller incisions, less tissue trauma, less bleeding, higher operating precision, definite results, and faster postoperative functional recovery than traditional or standard spinal surgery.

[0003] Since the surgical incision is small, auxiliary equipment is needed to expand the incision to expose the area that needs treatment. However, the existing expansion equipment is not convenient for positioning the wound in the center of the equipment, and it is not convenient to expand from the center to the sides, resulting in the wound being unable to be in the center of the expansion forceps, which is inconvenient for doctors to operate and needs to be improved. Summary of the invention

[0004] The purpose of the present invention is to provide a minimally invasive spinal surgery auxiliary device to solve the problems existing in the background technology.

[0005] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows:

[0006] A minimally invasive spinal surgery auxiliary device, comprising an annular bracket and two fixing brackets detachably connected to the annular bracket, the annular bracket is annular tubular, the annular bracket is slidably connected to two alignment mounting plates, arc angle grooves matching the annular bracket are provided on both sides of the two alignment mounting plates, one of the arc angle grooves slides through the annular bracket, a through groove matching the annular bracket is provided in the middle of the alignment mounting plate, a locking assembly connected to the annular bracket is installed inside the through groove, a circular groove is provided on one side of the two alignment mounting plates close to each other, and a spreading assembly matching the annular bracket is symmetrically installed on the alignment mounting plates;

[0007] The spreading assembly includes an insert block slidably connected to the arc angle groove, a sliding frame slidably connected inside the insert block, a rack installed inside the sliding frame, a gear meshing with the rack rotatably installed inside the insert block, a ratchet penetrating the insert block is installed on the upper end of the gear, a pawl matching the ratchet is elastically installed on the upper end of the insert block, and a spreading pliers is installed on the side of the sliding frames close to each other, and the angle of the sliding direction of the two sliding frames is ninety degrees.

[0008] The locking assembly includes a T-shaped slider, a sliding groove slidably connected to the T-shaped slider is opened in the middle of the alignment mounting plate, a first spring is installed between the sliding groove and the T-shaped slider, one end of the T-shaped slider extending out of the sliding groove is hinged with an arc plate matching the annular bracket, the arc plate is symmetrically fixedly connected to the limit bar, and the inner side of the annular bracket is evenly provided with limit grooves matching the two limit bars.

[0009] A transmission assembly for connecting two gears is installed inside the alignment mounting plate, and the transmission assembly includes a plurality of second springs. A sliding plate is connected to the upper portion of the alignment mounting plate for sliding movement up and down. The plurality of second springs are installed on the upper end of the sliding plate. A trapezoidal block abutting against the T-shaped slider is fixedly connected to the lower end of the sliding plate. Two transmission gears are rotatably installed on the upper end of the sliding plate. A transmission toothed belt is connected between the two transmission gears. Rectangular blocks are fixedly installed on the upper ends of the two transmission gears. A through hole matching the rectangular block is provided on the alignment mounting plate, and a rectangular groove matching the rectangular block is provided at the lower end of the gear.

[0010] A telescopic column is fixedly installed on the upper end of the gear, a fixed cylinder rotatably connected to the plug block is fixedly installed on the lower end of the ratchet, the fixed cylinder and the telescopic column are slidably connected up and down, a third spring is installed between the fixed cylinder and the telescopic column, and a flat handle is installed on the telescopic column passing through the fixed cylinder.

[0011] The insert block extends out and is aligned with the mounting plate and is hinged to two semi-arc plates, and the two semi-arc plates match the annular bracket and are clamped with each other.

[0012] The annular bracket is formed by two semicircular rings hinged to each other with damping, the front end of the sliding frame is hinged with a rotating seat, the spreading clamp is detachably connected to the rotating seat, a connecting piece is installed at the lower end of the rotating seat, the sliding frame is threadedly connected with a bolt, and a connecting plate hinged to the connecting piece is fixedly installed at the lower end of the bolt.

[0013] The rotating seat and the sliding frame are hinged via a rotating shaft, both ends of the rotating shaft penetrate the sliding frame and are fixedly connected with pointers, and both sides of the sliding frame are provided with angle grooves matching the pointers.

[0014] Long strips which are slidably connected to the inserting block are fixedly connected to both sides of the sliding frame, and one of the long strips is provided with a scale groove.

[0015] The present invention can abut the sleeve through two alignment mounting plates, so that the center of the annular bracket overlaps with the sleeve of the wound, which is convenient for the subsequent pulling operation of inserting the distraction clamp to accurately leak out the spinal affected area requiring surgery, and avoids the distraction clamp being pulled randomly without positioning, which makes it inconvenient to find the precise spinal operation position. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further illustrated by means of the non-limiting examples given in the accompanying drawings.

[0017] Figure 1 This is a first structural schematic diagram of a minimally invasive spinal surgery auxiliary device of the present invention;

[0018] Figure 2 This is a second structural schematic diagram of a minimally invasive spinal surgery auxiliary device of the present invention;

[0019] Figure 3 It is a schematic diagram of the first cross-sectional structure of a minimally invasive spinal surgery auxiliary device of the present invention;

[0020] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0021] Figure 5 It is a schematic diagram of a second cross-sectional structure of a minimally invasive spinal surgery auxiliary device of the present invention;

[0022] Figure 6 for Figure 5 A schematic diagram of the enlarged structure at B in the middle;

[0023] Figure 7 It is a third cross-sectional structural schematic diagram of a minimally invasive spinal surgery auxiliary device of the present invention;

[0024] Figure 8 for Figure 7 Schematic diagram of the enlarged structure at C in the middle;

[0025] Fig. 9 It is a fourth cross-sectional structural schematic diagram of a minimally invasive spinal surgery auxiliary device of the present invention;

[0026] Fig.10 for Fig. 9 Schematic diagram of the enlarged structure at D in the middle.

[0027] The main component symbols are described as follows:

[0028] Annular bracket 1, fixed frame 11, alignment mounting plate 12, arc angle groove 13, circular groove 14, plug block 20, sliding frame 21, rack 22, gear 23, ratchet 24, pawl 25, spreading pliers 26, T-shaped slider 30, first spring 31, arc plate 32, limit strip 33, limit groove 34, second spring 35, sliding plate 36, trapezoidal block 37, transmission gear 38, transmission toothed belt 39, rectangular block 40, telescopic column 41, fixed cylinder 42, third spring 43, straight handle 44, semi-arc plate 45, semicircular ring 46, rotating seat 47, connecting piece 48, bolt 49, connecting plate 50, rotating shaft 51, pointer 52, angle groove 53, long strip 54, scale groove 55. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0030] Example 1: Figure 1-10 As shown, a minimally invasive spinal surgery auxiliary device of the present invention comprises an annular bracket 1 and two fixing frames 11 detachably connected to the annular bracket 1, the annular bracket 1 is annular and tubular, the annular bracket 1 is slidably connected to two alignment mounting plates 12, arc angle grooves 13 matching the annular bracket 1 are provided on both sides of the two alignment mounting plates 12, one of the arc angle grooves 13 slides through the annular bracket 1, a through groove matching the annular bracket 1 is provided in the middle of the alignment mounting plate 12, a locking assembly connected to the annular bracket 1 is installed inside the through groove, a circular groove 14 is provided on one side of the two alignment mounting plates 12 close to each other, and a spreading assembly matching the annular bracket 1 is symmetrically installed on the alignment mounting plates 12;

[0031] The spreading assembly includes an insert block 20 slidably connected to the arc angle groove 13, a sliding frame 21 is slidably connected inside the insert block 20, a rack 22 is installed inside the sliding frame 21, a gear 23 meshing with the rack 22 is rotatably installed inside the insert block 20, a ratchet 24 penetrating the insert block 20 is installed on the upper end of the gear 23, a pawl 25 matching the ratchet 24 is elastically installed on the upper end of the insert block 20, a spreading clamp 26 is installed on the side where the sliding frames 21 are close to each other, and the angle of the sliding direction of the two sliding frames 21 is ninety degrees.

[0032] The fixing frame 11 is an adjustable fixing device of the prior art, which is convenient for the fixing frame 11 to fix and connect the annular bracket 1 and the operating bed, so that the fixing frame 11 can be stably placed above the patient; when in use, the annular bracket 1 is placed outside the cannula with the puncture minimally invasive cannula as the center, and then one end of the alignment mounting plate 12 is directed toward the cannula, and overlaps with the cannula through the circular groove 14, so that the two alignment mounting plates 12 form a line between the center of the annular bracket 1 and the cannula, so that the minimally invasive wound is located in the center of the annular bracket 1 by locking and fixing the fixing frame 11. After the annular bracket 1 is fixedly connected, the two alignment mounting plates 12 are rotated so that the annular bracket 1 abuts against the arc surface of one of the arc angle grooves 13, and then the spreading pliers 26 are inserted into the side of the cannula one by one, and then the insert block 20 is rotated to insert it into the arc angle groove 13 and the inside of the annular bracket 1, and finally the locking assembly is connected to make the alignment mounting plate 12 and the annular bracket 1 relatively fixed, and the alignment mounting plate 12 and the four spreading pliers are fixed. The four sliding frames 21 and the spreading pliers 26 installed by the two alignment mounting plates 12 spread the wound to facilitate the doctor to perform spinal surgery. At the same time, the angle between the two sliding frames 21 of the same alignment mounting plate 12 is ninety degrees, and then the other two sliding frames 21 can be used to spread the wound in four directions, so that the spreading effect is better. At the same time, the two alignment mounting plates 12 can also be used to position the entire device.

[0033] The present invention can abut the sleeve through two alignment mounting plates, so that the center of the annular bracket overlaps with the sleeve of the wound, which is convenient for the subsequent pulling operation of inserting the distraction clamp to accurately leak out the spinal affected area requiring surgery, and avoids the distraction clamp being pulled randomly without positioning, which makes it inconvenient to find the precise spinal operation position.

[0034] Embodiment 2: Further improvement is made on the basis of Embodiment 1, the locking assembly includes a T-shaped slider 30, a sliding groove slidably connected to the T-shaped slider 30 is opened in the middle of the alignment mounting plate 12, a first spring 31 is installed between the sliding groove and the T-shaped slider 30, the T-shaped slider 30 extends out of the sliding groove and one end is hingedly connected to an arc plate 32 matching the annular bracket 1, the arc plate 32 is symmetrically fixedly connected to the limiting strip 33, and the inner side of the annular bracket 1 is evenly provided with limiting grooves 34 matching the two limiting strips 33.

[0035] In the initial state, the resilience of the first spring 31 causes the T-shaped slider 30 to move outward, and then the T-shaped slider 30 slides out of the slide slot and the limiting strip 33 of the arc plate 32 is inserted into the limiting slot 34 on the inner side of the annular bracket 1. When the circular groove 14 needs to abut against the sleeve, the two alignment mounting plates 12 are driven away from each other by overcoming the resilience of the two first springs 31, and then the T-shaped slider 30 overcomes the resilience of the first spring 31 and is retracted into the slide slot, and then the circular grooves 14 of the two alignment mounting plates 12 are brought closer to each other until The circular groove 14 is abutted against the outer side of the sleeve. At this time, the resilience of the first spring 31 makes the alignment mounting plates 12 have a resilience to approach each other, thereby making the alignment mounting plates 12 abut against each other on one side close to each other, and at the same time, the sleeve is clamped in the circular groove 14. After the force applied by the alignment mounting plate 12 is released, the resilience of the two first springs 31 drives the annular bracket 1 to adjust its position under the abutment on one side of the alignment mounting plate 12, so that the sleeve is located in the center of the annular bracket 1, and finally the position of the annular bracket 1 is fixed by the fixing frame 11.

[0036] A transmission assembly for transmission connection to the two gears 23 is installed inside the alignment mounting plate 12, and the transmission assembly includes a plurality of second springs 35. A sliding plate 36 is slidably connected to the upper part of the alignment mounting plate 12, and the plurality of second springs 35 are installed on the upper end of the sliding plate 36. A trapezoidal block 37 abutting against the T-shaped slider 30 is fixedly connected to the lower end of the sliding plate 36. Two transmission gears 38 are rotatably installed on the upper end of the sliding plate 36. A transmission toothed belt 39 is transmission-connected between the two transmission gears 38. A rectangular block 40 is fixedly installed on the upper ends of the two transmission gears 38. A through hole matching the rectangular block 40 is provided on the alignment mounting plate 12, and a rectangular groove matching the rectangular block 40 is provided at the lower end of the gear 23.

[0037] In the initial state, the T-shaped slider 30 extends out of the slide slot to connect the limit bar 33 with the limit slot 34. At this time, the resilience of the T-shaped slider 30 is greater than the resilience of the second spring 35, so the T-shaped slider 30 will make the trapezoidal block 37 overcome the resilience of the second spring 35 and extend upward, thereby making the sliding plate 36, the transmission gear 38, and the transmission toothed belt 39 move upward, and making the rectangular block 40 extend out to align with the mounting plate 12;

[0038] After the annular bracket 1 is fixed, the arc angle groove 13 of the alignment mounting plate 12 is driven to rotate through one side of the annular bracket 1 with the rotating shaft of the arc plate 32 and the T-shaped slider 30 as the center, so that the arc angle groove 13 on this side is inserted into the annular bracket 1, and then the T-shaped slider 30 is released from the lock with the limit groove 34, so that the rebound force of the second spring 35 drives the sliding plate 36, the transmission gear 38, the transmission toothed belt 39 and the rectangular block 40 to extend into the alignment mounting plate 12, and then the two inserting blocks 20 are driven to be inserted into the arc angle groove 13 and the opening clamp 26 is fitted with the sleeve, and when the opening clamp 26 is fitted with the sleeve, the sliding frame 21 is at the shortest distance. At this time, the gear 23 is located at the end of the rack 22, so the rectangular block 40 is matched with the rectangular groove, and then the rectangular block 40 is inserted into the rectangular groove under the contact of the T-shaped slider 30 and the trapezoidal block 37;

[0039] In this way, when one sliding frame 21 is driven to move, the rectangular block 40 will be driven to rotate through the gear 23, and then the other sliding frame 21 will be driven to move outward synchronously through the cooperation of the transmission gear 38 and the transmission toothed belt 39, thereby playing the role of synchronously opening the wound. The operation of the other alignment mounting plate 12 and the opening assembly is similar, and the operation is convenient and quick;

[0040] When the two alignment mounting plates 12 are clamped with the sleeve, they are in a straight line. Therefore, when the two alignment mounting plates 12 are rotated and inserted into the plug block 20, the two alignment mounting plates 12 are in a parallel state. At the same time, the angle between the two sliding frames 21 is ninety degrees, so the four sliding frames 21 are evenly located on the four sides of the sleeve.

[0041] A telescopic column 41 is fixedly installed on the upper end of the gear 23, and a fixed cylinder 42 rotatably connected to the insert block 20 is fixedly installed on the lower end of the ratchet 24. The fixed cylinder 42 and the telescopic column 41 are slidably connected up and down, and a third spring 43 is installed between the fixed cylinder 42 and the telescopic column 41. The telescopic column 41 passes through the fixed cylinder 42 and is equipped with a flat handle 44.

[0042] When the sliding frame 21 is pulled, the rack 22 will drive the gear 23 to rotate, and then drive the telescopic column 41, the fixed cylinder 42 and the ratchet 24 to rotate. When it is necessary to adjust a sliding frame 21 separately, the handle 44 will be driven to move upward, and the telescopic column 41 will overcome the resilience of the third spring 43 and move upward. In this way, the rectangular groove of the gear 23 will be separated from the rectangular block 40. In this way, the forward rotation of the handle 44 can only drive the sliding frame 21 to slide. At the same time, the cooperation of the ratchet 24 and the pawl 25 can also prevent the fixed cylinder 42 and the telescopic column 41 from rotating in the opposite direction. Because the fixed cylinder 42 is fixedly installed with the ratchet 24, and the telescopic column 41 is connected to the fixed cylinder 42 by sliding up and down, the gear 23 and the telescopic column 41 are in a synchronous rotation state with the ratchet 24.

[0043] The insert block 20 extends out and is aligned with the mounting plate 12 and is hinged with two semi-arc plates 45, which match and are mutually engaged with the annular bracket 1. The two semi-arc plates 45 can be mutually engaged, thereby facilitating the insert block 20 to slide on the annular bracket 1.

[0044] The annular bracket 1 is formed by two semicircular rings 46 that are mutually damped and hinged, a rotating seat 47 is hinged at the front end of the sliding frame 21, the opening forceps 26 are detachably connected to the rotating seat 47, a connecting piece 48 is installed at the lower end of the rotating seat 47, and a bolt 49 is threadedly connected to the sliding frame 21, and a connecting plate 50 that is hinged to the connecting piece 48 is fixedly installed at the lower end of the bolt 49. The annular bracket 1 can be damped and hinged, so that the two semicircular rings 46 of the annular bracket 1 can be turned downward, thereby reducing the two semicircular rings 46 in a parallel state from blocking the doctor's surgical operation; and the bolt 49 is threadedly connected to the sliding frame 21, so the position of the connecting plate 50 can be adjusted by the bolt 49, thereby adjusting the angle of the connecting piece 48 and the rotating seat 47, thereby preventing the lower part of the opening forceps 26 from gathering inward to block the spine after the semicircular ring 46 rotates, affecting the opening effect.

[0045] The rotating seat 47 is hinged to the sliding frame 21 through a rotating shaft 51, and both ends of the rotating shaft 51 penetrate the sliding frame 21 and are fixedly connected with pointers 52, and both sides of the sliding frame 21 are provided with angle slots 53 that match the pointers 52. When the rotating seat 47 rotates, the rotating shaft 51 will be driven to rotate synchronously, so that the pointer 52 points to different angle slots 53, so as to facilitate observation of the angle between the opening clamp 26 and the sliding frame 21, and to facilitate adjustment of the opening effect of the opening clamp 26 under different conditions.

[0046] The sliding frame 21 is fixedly connected to the two sides with a long strip 54 that is slidably connected to the insert block 20, and one of the long strips 54 is installed with a scale groove 55. The long strip 54 can play a sliding role, and at the same time, it is convenient to open the scale groove 55, and overcome the groove to facilitate observation of the size of the opening of the opening clamp 26.

[0047] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A minimally invasive spinal surgery auxiliary device, comprising an annular support and two fixing frames detachably connected to the annular support, characterized in that: The annular bracket is an annular tube, and the annular bracket is slidably connected to two alignment mounting plates, and arc-shaped angle grooves matching the annular bracket are provided on both sides of the two alignment mounting plates, one of the arc-shaped angle grooves slides through the annular bracket, and a through groove matching the annular bracket is provided in the middle of the alignment mounting plate, and a locking component connected to the annular bracket is installed inside the through groove, and a circular groove is provided on one side of the two alignment mounting plates close to each other, and the alignment mounting plates are symmetrically installed with a support component matching the annular bracket; The spreading assembly includes an insert block slidably connected to the arc angle groove, a sliding frame slidably connected inside the insert block, a rack installed inside the sliding frame, a gear meshing with the rack rotatably installed inside the insert block, a ratchet penetrating the insert block is installed on the upper end of the gear, a pawl matching the ratchet is elastically installed on the upper end of the insert block, and a spreading pliers is installed on the side of the sliding frames close to each other, and the angle of the sliding direction of the two sliding frames is ninety degrees.

2. The minimally invasive spinal surgery assisting device according to claim 1, characterized in that: The locking assembly includes a T-shaped slider, a sliding groove slidably connected to the T-shaped slider is opened in the middle of the alignment mounting plate, a first spring is installed between the sliding groove and the T-shaped slider, one end of the T-shaped slider extending out of the sliding groove is hinged with an arc plate matching the annular bracket, the arc plate is symmetrically fixedly connected to the limit bar, and the inner side of the annular bracket is evenly provided with limit grooves matching the two limit bars.

3. The minimally invasive spinal surgery assisting device according to claim 2, characterized in that: A transmission assembly for connecting two gears is installed inside the alignment mounting plate, and the transmission assembly includes a plurality of second springs. A sliding plate is connected to the upper portion of the alignment mounting plate for sliding movement up and down. The plurality of second springs are installed on the upper end of the sliding plate. A trapezoidal block abutting against the T-shaped slider is fixedly connected to the lower end of the sliding plate. Two transmission gears are rotatably installed on the upper end of the sliding plate. A transmission toothed belt is connected between the two transmission gears. Rectangular blocks are fixedly installed on the upper ends of the two transmission gears. A through hole matching the rectangular block is provided on the alignment mounting plate, and a rectangular groove matching the rectangular block is provided at the lower end of the gear.

4. The minimally invasive spinal surgery assisting device according to claim 3, characterized in that: A telescopic column is fixedly installed on the upper end of the gear, a fixed cylinder rotatably connected to the plug block is fixedly installed on the lower end of the ratchet, the fixed cylinder and the telescopic column are slidably connected up and down, a third spring is installed between the fixed cylinder and the telescopic column, and a flat handle is installed on the telescopic column passing through the fixed cylinder.

5. The minimally invasive spinal surgery assisting device according to claim 1, characterized in that: The insert block extends out and is aligned with the mounting plate and is hinged to two semi-arc plates, and the two semi-arc plates match the annular bracket and are clamped with each other.

6. The minimally invasive spinal surgery assisting device according to claim 1, characterized in that: The annular bracket is composed of two semicircular rings hinged with each other in a damping manner. The front end of the sliding frame is hinged with a rotating seat. The spreading pliers are detachably connected to the rotating seat. A connecting piece is installed at the lower end of the rotating seat. The sliding frame is threadedly connected with a bolt. The lower end of the bolt is fixedly installed with a connecting plate hinged to the connecting piece.

7. The minimally invasive spinal surgery assisting device according to claim 6, characterized in that: The rotating seat and the sliding frame are hinged via a rotating shaft, both ends of the rotating shaft penetrate the sliding frame and are fixedly connected with pointers, and both sides of the sliding frame are provided with angle grooves matching the pointers.

8. The minimally invasive spinal surgery assisting device according to claim 1, characterized in that: Long strips which are slidably connected to the inserting block are fixedly connected to both sides of the sliding frame, and one of the long strips is provided with a scale groove.

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