Minimally invasive spine retractor

Abstract

The minimally invasive spine retractor comprises a first handle and a second handle, the first handle and the second handle are arranged in a hinged mode, and supporting open pieces are fixedly arranged at the positions, close to the front ends, of the opposite sides of the first handle and the second handle. Mounting grooves are formed in the positions, close to the centers of the front ends, of the opposite sides of the first handle and the second handle correspondingly, grooves are formed in the centers of the upper end faces of the two mounting grooves correspondingly, fixing mechanisms are arranged in the two grooves correspondingly, and each fixing mechanism comprises a rotating rod, an adjusting block and an adjusting plate; a positioning groove is formed in the position, close to the rear end, of one side of the outer wall of the first handle, and a limiting block is movably arranged in the positioning groove. The supporting open piece can be detached, deep disinfection and cleaning of the supporting open piece are achieved, the risk of operation infection is avoided, meanwhile, the retraction angle and strength can be flexibly adjusted through cooperation of the limiting mechanism, and the operation is convenient. Excessive damage to surrounding tissues of a patient is avoided, and postoperative recovery of the patient is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely relates to a spine minimally invasive retractor. BACKGROUND

[0002] In recent years, spine minimally invasive surgery has become the main trend of treating spinal diseases. Compared with traditional open surgery, spine minimally invasive surgery has smaller incision, less intraoperative bleeding, shorter postoperative recovery time and less damage to surrounding tissues. And in the spine minimally invasive surgery, auxiliary tools such as spine minimally invasive retractors are often used to retract the soft tissues and muscles around the surgical area, expose the spine structure and provide operation space.

[0003] The support opening piece structure of the traditional spine minimally invasive retractor is fixed, the sterilization process is more troublesome, and the postoperative cleaning and maintenance difficulty is increased, which may lead to the increase of the risk of surgical infection. At the same time, the traditional spine minimally invasive retractor has great limitations in the adjustment of the retraction angle. In the complex spine area, it is difficult to fully expose the target site, which may not be clearly observed and operated during the operation process. Moreover, the retraction angle cannot be accurately adjusted to the best operation angle, which may cause excessive damage to the surrounding tissues of the patient during the retraction process, prolonging the recovery time of the patient. SUMMARY

[0004] In view of the defects in the prior art, the utility model provides a spine minimally invasive retractor which can disassemble the support opening piece, realize the disinfection and cleaning of the depth, avoid the risk of surgical infection, and flexibly adjust the retraction angle and force under the cooperation of the limiting mechanism, avoid excessive damage to the surrounding tissues of the patient, and improve the postoperative recovery of the patient.

[0005] Preferably, a spine minimally invasive retractor comprises a first handle and a second handle, the first handle and the second handle are hingedly arranged, the first handle and the second handle are fixedly arranged with support opening pieces at the front end positions of the opposite sides, the first handle and the second handle are provided with mounting grooves at the center positions of the front ends of the opposite sides, recesses are arranged at the center positions of the upper end faces of the two mounting grooves, and fixing mechanisms are arranged in the two recesses.

[0006] The two fixing mechanisms each comprise a rotating rod, an adjusting block and an adjusting plate, a positioning groove is arranged at the rear end position of one side of the outer wall of the first handle, a limiting block is movably arranged in the positioning groove, a limiting mechanism is arranged in the limiting block, the limiting mechanism comprises a worm, a first rotating shaft, a first gear, a second rotating shaft and a second gear, a rack is hingedly arranged at the rear end position of one side of the outer wall of the second handle, and the outer wall of the rack is movably arranged in the positioning groove.

[0007] Preferably, two mounting blocks are fixedly arranged at the upper end positions of the two support flaps, and a fixing groove is formed in the center of the upper end face of each mounting block.

[0008] Preferably, each of the two rotating rods is rotationally arranged at the center of the inner wall of each groove, two adjusting blocks are fixedly sleeved on the center of the outer wall of the two rotating rods, and springs are fixedly arranged on the center of the upper end face of the inner wall of the two grooves, and the other ends of the springs are fixedly connected to the upper end face of the adjusting plate.

[0009] Preferably, a sliding block is fixedly arranged on the center of the lower end face of each adjusting plate, and a fixed block is fixedly arranged on the center of the lower end face of the sliding block.

[0010] Preferably, a sliding groove is formed in the upper end face of the one handle, a moving block is fixedly arranged on the center of the lower end face of the limiting block, a moving groove is formed in the center of the lower end face of the inner wall of the positioning groove, and the moving block is movably connected to the moving groove.

[0011] Preferably, the worm is rotationally arranged on the center of the upper end face of the inner wall of the limiting block, and the first rotating shaft is rotationally arranged on the center of the upper and lower end faces of the inner wall of the limiting block.

[0012] Preferably, a worm wheel is fixedly sleeved on the upper end position of the outer wall of the first rotating shaft, the worm wheel and the worm are meshingly arranged, and the first gear is fixedly sleeved on the lower end of the outer wall of the first rotating shaft.

[0013] Preferably, the second rotating shaft is rotationally arranged on the rear end position of the upper and lower end faces of the inner wall of the limiting block, and the second gear is fixedly sleeved on the side of the outer wall of the second rotating shaft.

[0014] The beneficial effects of the utility model lie in:

[0015] 1. The spine minimally invasive retractor disclosed by the utility model can realize the disassembly of the support flaps by rotating the rotating rod, driving the rotation of the adjusting block, exerting a vertical upward extrusion force on one end of the lower end face of the adjusting plate, driving the vertical upward movement of the fixed block in the process of the upward movement of the adjusting plate, and making the fixed block retract and separate from the fixing groove.

[0016] When the cleaning and disinfecting is completed, the rotating rod is rotated again to make the adjusting block rotate away from the adjusting plate, at this time, the adjusting plate drives the fixed block to move vertically downward under the elastic reset action of the spring, and the movable fixed block is embedded in the two fixed grooves, so that the installation and fixation are completed, the operation is convenient, the medical staff can timely disinfect and clean the device, the working efficiency is improved, and the risk of surgical infection caused by improper cleaning is avoided.

[0017] 2. The spine minimally invasive retractor disclosed by the utility model, through rotating the worm, the worm gear and the worm are engaged to drive the rotation of the worm gear, the rotation of the first rotating shaft and the first gear is driven under the rotation of the worm gear, the second gear is driven to rotate under the engagement of the first gear and the second gear, the rack moves horizontally along the positioning groove under the engagement of the rack and the second gear, so that the size of the retraction is accurately adjusted, the over injury of the tissue around the patient is avoided, the postoperative recovery of the patient is improved, the operation field range is improved, the operation is facilitated, and the efficiency and safety of the operation are further improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the drawings needed to be used in the specific embodiment or the prior art description will be briefly introduced below. In all the drawings, similar elements or parts are generally indicated by similar reference numerals. In the drawings, various elements or parts are not necessarily drawn according to the actual proportion.

[0019] Figure 1 It is a front view of the opening shaft of the utility model;

[0020] Figure 2 It is a front view of the closing shaft of the utility model;

[0021] Figure 3 It is a rear view of the closing shaft of the utility model;

[0022] Figure 4 It is a support opening piece of the utility model;

[0023] Figure 5 It is a limiting block of the utility model;

[0024] Figure 6 It is a limiting block of the utility model;

[0025] Figure 7 It is a side view of the support opening piece and the handle connection mode of the utility model;

[0026] Figure 8 It is an A place of the utility model; Figure 7 enlarged schematic view.

[0027] In the attached diagram, 1-Handle No. 1, 2-Handle No. 2, 3-Rack, 4-Positioning groove, 5-Limiting block, 6-Moving block, 7-Moving groove, 8-Limiting mechanism, 801-Worm, 802-First rotating shaft, 803-Worm wheel, 804-Gear No. 1, 805-Second rotating shaft, 806-Gear No. 2, 9-Slide groove, 10-Supporting plate, 11-Mounting block, 12-Fixing groove, 13-Mounting groove, 14-Groove, 15-Fixing mechanism, 1501-Rotating rod, 1502-Adjusting block, 1503-Spring, 1504-Adjusting plate, 1505-Slider, 1506-Fixing block. Detailed Implementation

[0028] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0029] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0030] Reference Figures 1-8 This utility model provides an embodiment of a minimally invasive spinal retractor, comprising a first handle 1 and a second handle 2, which are hinged together. Supporting plates 10 are fixedly mounted on the frontal side of opposite sides of both the first handle 1 and the second handle 2. Mounting blocks 11 are fixedly mounted on the upper ends of the opposite sides of the two supporting plates 10. Fixing grooves 12 are formed at the center of the upper surfaces of both mounting blocks 11. Mounting grooves 13 are formed on the frontal side of opposite sides of both the first handle 1 and the second handle 2. The two mounting blocks 11 are movably engaged within the two mounting grooves 13. 13. A groove 14 is provided at the center of the upper end face of each handle 13. A fixing mechanism 15 is provided in each of the two grooves 14. A positioning groove 4 is provided at the rear end position of one side of the outer wall of the first handle 1. A sliding groove 9 is provided at one side of the upper end face of the first handle 1. A limiting block 5 is movably arranged in the positioning groove 4. A moving block 6 is fixedly arranged at the center of the lower end face of the limiting block 5. A moving groove 7 is provided at the center of the lower end face of the inner wall of the positioning groove 4. The moving block 6 is movably engaged in the moving groove 7. A limiting mechanism 8 is provided in the limiting block 5. A rack 3 is hinged at the rear end position of one side of the outer wall of the second handle 2. The outer wall of the rack 3 is movably arranged in the positioning groove 4.

[0031] Specifically, when the two support flaps 10 need to be cleaned and disinfected, the two support flaps 10 are disassembled and assembled through the cooperation of the fixing mechanisms 15, and then the angle and force of the device are precisely adjusted through the cooperation of the limiting mechanism 8, so as to avoid excessive damage to the surrounding tissues of the patient, improve the postoperative recovery of the patient, and improve the surgical field range, facilitate the operation, and further improve the efficiency and safety of the operation.

[0032] With reference to Figure 8 The two fixing mechanisms 15 each include a rotating rod 1501, an adjusting block 1502, and an adjusting plate 1504. Each of the two rotating rods 1501 is rotationally arranged at the center of the two sides of the inner wall of each of the two grooves 14. The two adjusting blocks 1502 are fixedly and sleevedly arranged at the center of the outer wall of each of the two rotating rods 1501. The two grooves 14 are each provided with a spring 1503 at the center of the upper end face of the inner wall, and the other end of each spring 1503 is fixedly connected to the opposite side of the upper end face of each adjusting plate 1504. The two adjusting plates 1504 are each provided with a sliding block 1505 at the center of the lower end face, and the center of the lower end face of each sliding block 1505 is fixedly provided with a fixing block 1506. The two fixing blocks 1506 are each movably embedded in each of the two fixing grooves 12.

[0033] Specifically, when the two support flaps 10 need to be cleaned and disinfected, the two support flaps 10 are disassembled and assembled through the cooperation of the fixing mechanisms 15, and then the angle and force of the device are precisely adjusted through the cooperation of the limiting mechanism 8, so as to avoid excessive damage to the surrounding tissues of the patient, improve the postoperative recovery of the patient, and improve the surgical field range, facilitate the operation, and further improve the efficiency and safety of the operation.

[0034] With reference to Figure 1 and Figures 5-6The limiting mechanism 8 comprises a worm 801, a first rotating shaft 802, a first gear 804 and a second rotating shaft 805, the worm 801 is rotationally arranged at the center of the upper end face of the inner wall of the limiting block 5 near the front end, the first rotating shaft 802 is rotationally arranged at the center of the upper and lower end faces of the inner wall of the limiting block 5, the worm wheel 803 is fixedly sleeved and arranged at the upper end of the outer wall of the first rotating shaft 802, the worm wheel 803 is meshingly arranged with the worm 801, the first gear 804 is fixedly sleeved and arranged at the lower end of the outer wall of the first rotating shaft 802, the second rotating shaft 805 is rotationally arranged at the rear end of the upper and lower end faces of the inner wall of the limiting block 5, the second gear 806 is fixedly sleeved and arranged at the side of the outer wall of the second rotating shaft 805 near the first gear 804, and the first gear 804 and the rack 3 are both meshingly arranged with the second gear 806.

[0035] Specifically, when the retraction angle needs to be adjusted, the worm 801 is rotated, the worm wheel 803 is driven to rotate under the meshing arrangement of the worm wheel 803 and the worm 801, the first rotating shaft 802 is driven to rotate under the rotation of the worm wheel 803, the first gear 804 is driven to rotate under the rotation of the first rotating shaft 802, the second gear 806 is driven to rotate under the meshing arrangement of the first gear 804 and the second gear 806, and the rack 3 moves horizontally along the direction of the positioning groove 4 under the meshing of the rack 3 and the second gear 806, so that the size of the retraction is accurately adjusted.

[0036] When the retraction angle is adjusted, the meshing angle and distance of the rack 3 and the second gear 806 will change, in order to ensure the stability of the meshing, the limiting block 5 is moved to slide on the inner wall of the moving groove 7, the limiting block 5 is movably connected with the moving block 6, and the stability of the limiting block 5 during movement is ensured, when the limiting block 5 moves to the vicinity of the rack 3, the meshing angle and tightness of the rack 3 and the second gear 806 can be adjusted by rotating the limiting block 5, the rack 3 and the second gear 806 are accurately meshed again, the retraction angle and force of the device are accurately adjusted, the over-injury of the tissues around the patient is avoided, the postoperative recovery of the patient is improved, the range of the surgical field is improved, the operation is facilitated, and the efficiency and safety of the operation are further improved.

[0037] Working principle: when in use, the worm 801 is rotated, the worm wheel 803 is driven to rotate under the meshing arrangement of the worm wheel 803 and the worm 801, the first gear 804 on the outer wall of the first rotating shaft 802 is driven to rotate under the rotation of the worm wheel 803, the second gear 806 is driven to rotate under the meshing arrangement of the first gear 804 and the second gear 806, and the rack 3 moves horizontally along the direction of the positioning groove 4 under the meshing of the rack 3 and the second gear 806, so that the size of the retraction is accurately adjusted.

[0038] Second, when the postoperative support sheet 10 needs to be cleaned and disinfected, by rotating the rotating rod 1501 to drive the rotation of the adjusting block 1502, the adjusting block 1502 is rotated to exert a vertical upward extrusion force on one end of the lower end surface of the adjusting plate 1504, and then the adjusting plate 1504 moves upward to further drive the vertical upward movement of the fixed block 1506, and then the fixed block 1506 retracts from the fixed groove 12 to realize the disassembly of the support sheet 10. When the cleaning and disinfection are completed, the rotating rod 1501 is rotated again, and then the fixed block 1506 is movably embedded in the two fixed grooves 12 under the cooperation of the fixing mechanism 15, so that the installation and fixation are completed. Convenient operation, medical staff can timely deep disinfection and cleaning, improve the work efficiency and also avoid the risk of surgical infection caused by improper cleaning.

[0039] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application.

Claims

1. A minimally invasive spinal retractor comprising a first handle (1) and a second handle (2), characterized in that: The first handle (1) and the second handle (2) are hingedly arranged, the first handle (1) and the second handle (2) are fixedly arranged with support flaps (10) at the front end position of the opposite side, the first handle (1) and the second handle (2) are provided with mounting grooves (13) at the center of the front end of the opposite side, the upper end surface center of the two mounting grooves (13) is provided with a groove (14), and the two grooves (14) are provided with a fixing mechanism (15). The two fixing mechanisms (15) each include a rotating rod (1501), an adjusting block (1502) and an adjusting plate (1504), the outer wall of the first handle (1) is provided with a positioning groove (4) at the rear end position of one side, the positioning groove (4) is movably provided with a limiting block (5), the limiting block (5) is provided with a limiting mechanism (8), the limiting mechanism (8) includes a worm (801), a first rotating shaft (802), a first gear (804), a second rotating shaft (805) and a second gear (806), the outer wall of the second handle (2) is hingedly provided with a rack (3) at the rear end position of one side, and the rack (3) is movably arranged in the positioning groove (4), the first gear (804) and the rack (3) are meshingly arranged with the second gear (806).

2. A minimally invasive spinal retractor according to claim 1, wherein: The two support flaps (10) are fixedly arranged with mounting blocks (11) at the upper end position of the opposite side, the upper end surface center of the two mounting blocks (11) is provided with a fixing groove (12), and the two mounting blocks (11) are movably clamped in the two mounting grooves (13) respectively.

3. A minimally invasive spinal retractor according to claim 1, wherein: Each of the two rotating rods (1501) is rotatably arranged in the inner wall of each of the two grooves (14) at the center of the two sides of the front end position, the two adjusting blocks (1502) are fixedly sleeved and arranged at the center of the outer wall of the two rotating rods (1501) respectively, and the inner wall of the two grooves (14) is fixedly provided with a spring (1503) at the center of the upper end surface, and the other end of the two springs (1503) is fixedly connected with the opposite side position of the upper end surface of the two adjusting plates (1504) respectively.

4. A minimally invasive spinal retractor according to claim 2, wherein: The lower end surface center of the two adjusting plates (1504) is fixedly provided with a sliding block (1505), the lower end surface fixed center of the two sliding blocks (1505) is fixedly provided with a fixed block (1506), and the two fixed blocks (1506) are movably embedded in the two fixing grooves (12) respectively.

5. A minimally invasive spinal retractor according to claim 1, wherein: The upper end surface of the first handle (1) is provided with a sliding groove (9) at the side position, the lower end surface center of the limiting block (5) is fixedly provided with a moving block (6), the lower end surface center of the inner wall of the positioning groove (4) is provided with a moving groove (7), and the moving block (6) is movably clamped and arranged in the moving groove (7).

6. A minimally invasive spinal retractor according to claim 1, wherein: The worm (801) is rotatably arranged at the center of the upper end surface of the inner wall of the limiting block (5) near the front end, and the first rotating shaft (802) is rotatably arranged at the center of the upper and lower end surfaces of the inner wall of the limiting block (5).

7. A minimally invasive spinal retractor according to claim 1, wherein: The outer wall of the first rotating shaft (802) is fixedly sleeved with a worm wheel (803) at the upper end position, the worm wheel (803) is meshed with the worm (801), and the first gear (804) is fixedly sleeved at the lower end of the outer wall of the first rotating shaft (802).

8. A minimally invasive spinal retractor according to claim 1, wherein: The second rotating shaft (805) is rotatably arranged at the rear end position of the upper and lower end faces of the inner wall of the limiting block (5), and the second gear (806) is fixedly sleeved at the side of the second rotating shaft (805) close to the first gear (804).

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