Auxiliary device for minimally invasive surgery of thoracolumbar vertebral fracture

Abstract

The invention provides an auxiliary device for thoracolumbar vertebral fracture minimally invasive surgery, and belongs to the technical field of medical auxiliary tools. Comprising a mounting frame fixedly mounted on the side face of an operating bed through bolts, two movable sliding blocks are mounted outside the mounting frame, a mounting plate of a bent structure is fixedly mounted above the movable sliding blocks, and a stretching mechanism for driving the two movable sliding blocks to move is arranged on the outer side of the mounting frame; the four fixing plates are worn on the front chest and the back of the patient, the front fixing plate and the rear fixing plate which correspond to each other are connected through the binding belts, after an operation is completed, the patient still wears the fixing plates on the body, and then the supporting rods of a crossed structure are placed between the upper fixing plate and the lower fixing plate. The adjusting bolt is rotated through the rotating button, the distance between the upper fixing plate and the lower fixing plate is adjusted through threaded connection between the adjusting bolt and the second sleeve and threaded connection between the adjusting bolt and the fixing block, and the purpose of supporting and protecting the thoracolumbar vertebra position of a patient is achieved (replacing a protective tool needed after an operation).

Description

Technical Field

[0001] The present invention relates to the technical field of medical auxiliary tools, and in particular to an auxiliary device for minimally invasive surgery of thoracic and lumbar fractures. Background Art

[0002] Minimally invasive surgery for thoracic and lumbar fractures is an important technology in the field of spinal surgery. Its core goal is to achieve fracture reduction, nerve decompression and spinal stabilization with minimal trauma. During the operation, in order to ensure the normal progress of the operation, auxiliary devices are usually required to fix the patient's body.

[0003] In the prior art, a Chinese patent application number CN202311785206.5 discloses a minimally invasive surgical auxiliary device for thoracolumbar fractures, comprising a base and a traction mechanism and a correction mechanism arranged on the base, the traction mechanism comprising a slide rail laid on the base along the longitudinal direction and a first plate and a second plate slidingly engaged with the slide rail, the base is also provided with a driving mechanism, the driving mechanism is used to drive the first plate and the second plate to slide synchronously along the slide rail toward the middle of the slide rail or to slide synchronously toward the two ends of the slide rail respectively, the correction mechanism is arranged between the first plate and the second plate, the correction mechanism comprises at least two correction components, which can have a certain reduction effect on the vertebral morphology at the injured position after in vitro correction, can reduce the adjustment amount of surgical correction, facilitate surgical operation, and reduce the adjustment amount of the vertebral body during surgery.

[0004] For example, in the prior art, a Chinese patent application number CN201110434154.8 discloses a minimally invasive internal fixation surgical auxiliary device for thoracic and lumbar fractures. The device includes two screws and a connecting rod. The upper part of the screw is fixedly connected to a screw tube, a screw hole is provided in the screw tube, and an opening groove is provided on the screw tube for passing through the tube wall on both sides for passing the connecting rod. A bolt adapted to the screw tube is connected inside the screw tube, and the device also includes a spreading device, so that the two screws are spread in opposite directions under the action of the spreading device.

[0005] For example, in the prior art, a Chinese patent with application number CN202310945489.9 discloses an auxiliary device for fracture treatment surgery, which includes a support frame, a placement plate, an inflatable air cushion, a protrusion and a limiting mechanism. Two arc-shaped placement plates are connected to the support frame, and the inner sides of the placement plates are connected to inflatable air cushions for tightly fitting the patient's limbs. The inflatable air cushion is connected to a side away from the adjacent placement plate with several protrusions at intervals, and the placement plate is provided with a limiting mechanism for limiting the patient's limbs.

[0006] Based on the above materials, it can be seen that in the existing technology, the patient's body is generally limited by clamping and fixing during surgery, and the spine is repositioned by stretching to facilitate surgery. However, in actual use, the devices in the existing technology can only protect the patient during surgery. After the operation, the patient's bones (such as the spine) are very fragile and are easily damaged when the bed is moved without protection. Summary of the Invention

[0007] The purpose of the present invention is to provide an auxiliary device for minimally invasive surgery of thoracic and lumbar fractures, which overcomes the problem of poor postoperative protection for patients in the above-mentioned background technology.

[0008] In order to achieve the above-mentioned purpose, the technical idea adopted by the present invention is: to integrate the patient's wearable protective device with the stretching mechanism structure on the operating table, and to use the stretching mechanism to stretch and reposition the patient's spine during surgery to facilitate the operation, and the protective device worn after surgery continues to support and protect the patient.

[0009] Based on the above technical ideas, the technical solution adopted by the present invention is: An auxiliary device for minimally invasive surgery of thoracic and lumbar fractures includes a mounting frame fixed to the side of an operating table by bolts, two movable sliders installed on the outside of the mounting frame, a mounting plate with a bent structure fixedly installed above the movable sliders, and a stretching mechanism for driving the two movable sliders to move is provided on the outside of the mounting frame; a fixing plate worn on the patient, a total of four fixing plates worn on the patient's chest and back, the front and rear corresponding fixing plates are connected by a restraint belt, a Velcro structure adhered to the fixing plate is provided on the inside of the restraint belt, and a support bar with a "C"-shaped structure is provided on the outside of the restraint belt; a connecting plate is provided at the upper end of the mounting plate, two connecting bolts are installed with threads passing through the inside of the connecting plate, and the columnar structure on the side of the connecting plate and the docking block form an insert-type disassembly and installation structure, and the fixing bolts are installed with threads above the docking block.

[0010] Preferably, the stretching mechanism includes a transmission screw and a limiting slide rod installed on the outside of the mounting frame, and the transmission screw and the limiting slide rod are both slidably connected to the movable slider, and a drive motor is fixedly installed on the outside of the mounting frame to drive the transmission screw to rotate, and the drive motor is used to drive the transmission screw to rotate, thereby causing the movable slider threadedly installed on the outside of the transmission screw to move.

[0011] Preferably, an infrared grating with an adjustment structure is fixedly installed on the inner surface of the mounting frame, and a baffle corresponding to the infrared grating is fixedly installed on the back of the movable slider. The baffle blocks the infrared signal to determine the position of the movable slider. The baffle is used to block the infrared signal emitted by the infrared grating to achieve the purpose of determining the position.

[0012] Preferably, a support plate corresponding to the position of the fixed plate is fixedly installed below the mounting plate, and friction balls arranged in a matrix are provided on the lower surface of the support plate, so as to reduce friction during movement.

[0013] Preferably, the support bar is provided with two parts, a first main body and a second main body, and the second main body is rotatably mounted on the left and right sides of the first main body.

[0014] Preferably, a pulling spring is fixedly installed between the first body and the second body, and a first sleeve is fixedly installed at a middle position of the outer surface of the first body.

[0015] Preferably, the first sleeve is threadedly connected to the connecting bolt, and the front end of the second body is fixed to a fixed block fixedly installed on the outer surface of the fixed plate by bolts, and a pressure sensor for detecting clamping pressure is fixedly installed on the inner surface of the fixed plate.

[0016] Preferably, the fixation plate is still worn on the patient after surgery, and a cross-structured support rod is provided between the upper and lower corresponding fixation plates, and the upper and lower fixation plates are formed into a whole by the support rod, thereby achieving the purpose of protecting the patient's thoracic and lumbar spine.

[0017] Preferably, a second sleeve is fixedly installed on the top end of the support rod, and an adjusting bolt with threaded structures at both ends is installed through the interior of the second sleeve.

[0018] Preferably, the middle thread structure of the adjusting bolt is threadedly connected to the internal thread structure of the second sleeve, the front end thread structure of the adjusting bolt is threadedly connected to the fixing block, and the top end of the adjusting bolt is fixedly mounted with a rotating knob.

[0019] Compared with the prior art, the present invention has the following beneficial effects: (1) Before the operation, the patient wears the fixation plate with a restraint belt. During the operation, the patient lies on the operating table and connects the plate with the support bar using the connecting bolts. Finally, the drive motor is turned on as needed, and the drive motor drives the transmission screw to rotate. During the rotation of the transmission screw, the movable slider installed with a thread through the outside of the screw moves, thereby driving the entire device to move, achieving the purpose of stretching the patient and resetting the patient's spine to facilitate subsequent surgical operations; Furthermore, when the support bar is connected to the connecting bolt, the threaded connection between the connecting bolt and the first sleeve on the outside of the support bar is utilized. When the connecting bolt is rotated, the first body in the support bar is driven to move outward, and at this time the second body is driven to rotate relative to the first body, thereby increasing the clamping force of the second body on the fixed plate, and cooperating with the pressure sensor on the inside of the fixed plate to detect the specific pressure value in real time, and finally achieving the best fixing effect.

[0020] (2) During the stretching process, the specific position of the moving slider is determined by the cooperation between the shielding plate and the infrared grating, and the friction ball under the support plate contacts the upper surface of the operating table to reduce the friction during the stretching process.

[0021] (3) After the operation is completed, the patient still wears the fixation plate, and then places the cross-shaped support rod between the upper and lower fixation plates. By turning the knob, the adjustment bolt is turned, and the threaded connection between the adjustment bolt and the second sleeve and the adjustment bolt and the fixation block is used to adjust the distance between the upper and lower fixation plates to achieve the purpose of supporting and protecting the patient's thoracic and lumbar spine (instead of the protective gear needed after surgery). BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the mounting structure of the present invention.

[0025] Figure 3 It is a structural schematic diagram of the connection relationship between the connecting plate and the docking block of the present invention.

[0026] Figure 4 This is a schematic diagram of the support plate structure of the present invention.

[0027] Figure 5 It is a schematic diagram of the lower surface structure of the support plate of the present invention.

[0028] Figure 6 This is a schematic diagram of the inner structure of the mounting frame of the present invention; Figure 7 This is a structural diagram of the connection relationship between the support rod and the fixing plate of the present invention; Figure 8 This is a schematic diagram of the connection structure between the fixing plate and the restraining belt of the present invention; Figure 9 This is a schematic diagram of the support bar structure of the present invention; Figure 10 This is a schematic diagram of the support rod structure of the present invention.

[0029] Among them, 1. operating table; 2. mounting frame; 3. movable slider; 4. mounting plate; 5. fixing plate; 6. restraint belt; 601. Velcro; 7. support bar; 701. first main body; 702. second main body; 8. connecting plate; 9. connecting bolt; 10. transmission screw; 11. limiting slide bar; 12. driving motor; 13. docking block; 14. fixing bolt; 15. support plate; 16. friction ball; 17. fixing block; 18. first sleeve; 19. pulling spring; 20. pressure sensor; 21. infrared grating; 22. shielding plate; 23. support rod; 24. second sleeve; 25. adjusting bolt; 26. turning knob. DETAILED DESCRIPTION

[0030] Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiments are only used to illustrate the present invention and are not used in limiting the scope of the present invention.In addition, should be understood that after reading the content taught by the present invention, those skilled in the art will make various changes or modifications to the present invention, and these equivalent forms fall equally within the scope limited by the appended claims of the application.

[0031] Example 1 like Figure 1-Figure 7 As shown: In order to achieve the purpose of stretching the patient's spine and facilitating subsequent surgical operations, this embodiment provides the following technical solutions, including a mounting frame 2 fixedly installed on the side of an operating bed 1 by bolts, two movable sliders 3 are installed on the outside of the mounting frame 2, and a mounting plate 4 with a bent structure is fixedly installed above the movable slider 3. A stretching mechanism is provided on the outside of the mounting frame 2 to drive the two movable sliders 3 to move, and a fixing plate 5 worn on the patient, a total of four fixing plates 5 are worn on the patient's chest and back, and the front and rear corresponding fixing plates 5 are connected by a restraint belt 6, a Velcro 601 structure adhered to the fixing plate 5 is provided on the inside of the restraint belt 6, and a support bar 7 with a "C"-shaped structure is provided on the outside of the restraint belt 6; a connecting plate 8 is provided on the upper end of the mounting plate 4, and two connecting bolts 9 are installed through the thread inside the connecting plate 8, and the connecting plate The columnar structure on the side of 8 and the docking block 13 form an insert-type disassembly and installation structure, and a fixing bolt 14 is threadedly installed above the docking block 13. The stretching mechanism includes a transmission screw 10 and a limit slide 11 installed on the outside of the mounting frame 2, and the transmission screw 10 and the limit slide 11 are both slidably connected with the movable slider 3, and a drive motor 12 is fixedly installed on the outside of the mounting frame 2 for driving the transmission screw 10 to rotate. An infrared grating 22 with an adjustment structure is fixedly installed on the inner surface of the mounting frame 2, and a baffle 21 corresponding to the infrared grating 22 is fixedly installed on the back of the movable slider 3. The baffle 21 blocks the infrared signal to determine the position of the movable slider 3. A support plate 15 corresponding to the position of the fixed plate 5 is fixedly installed below the mounting plate 4, and friction balls 16 arranged in a matrix are provided on the lower surface of the support plate 15.

[0032] Before the minimally invasive surgery for thoracolumbar fracture, the patient first places four fixing plates 5 on the front and back sides of the body respectively (one set of fixing plates 5 corresponds to the hip position, and the other set of fixing plates 5 corresponds to the chest position), and then places the restraint belt 6 on the left and right sides of the fixing plates 5, and uses the Velcro 601 on the inside of the restraint belt 6 to stick and fix it to the outer surface of the fixing plate 5 (that is, the Velcro 601 on the inside of the front end of the restraint belt 6 is stuck to the outer surface of the fixing plate 5, so that the fixing plate 5 and the restraint belt 6 form a ring structure), so that the fixing plate 5 is put on the body, and then the support bar 7 is connected to the fixing block 17 on the outside of the fixing plate 5 with bolts (wherein The fixing block 17 is fixedly mounted on the outer surface of the fixing plate 5 by bolts. During the operation, the patient lies on the support plate 15 on the operating table 1 (the support plate 15 is fixedly mounted under the mounting plate 4 by bolts). Then, the movable slider 3 is moved to the position corresponding to the fixing plate 5 (the transmission screw 10 is driven by the driving motor 12 to rotate, thereby realizing the movement of the movable slider 3). Then, the columnar structure at the rear end of the connecting plate 8 is inserted into the docking block 13 at the upper end of the mounting plate 4. Then, the connecting plate 8 and the docking block 13 are fixed by the fixing bolts 14 (the fixing bolts 14 are rotated to move it downward, thereby squeezing the columnar structure at the rear end of the connecting plate 8). The structure is used to fix the connecting plate 8). After the fixation is completed, the connecting bolt 9 installed with the internal thread of the connecting plate 8 is rotated (the connecting bolt 9 corresponds to the support bar 7), and the threaded connection between the connecting bolt 9 and the support bar 7 is used to fix the patient and the device (that is, the mounting plate 4, the support bar 7 and the fixing plate 5 form a whole, which can be moved synchronously under the drive of the moving slider 3). Then, the driving motor 12 is turned on according to the actual surgical needs, and the driving motor 12 is used to drive the transmission screw 10 to rotate. During the rotation of the transmission screw 10, the moving slider 3 installed with a thread passing through the outside thereof is driven to move (in this process, the limiting slider is used 11 limits the movable slider 3, and the movable slider 3 slides through the limiting slider 11 to prevent it from rotating. In the process of movement, the shielding plate 21 on the back of the movable slider 3 cooperates with the infrared grating 22 on the inner side of the mounting frame 2, so as to judge the position of the movable slider 3 in real time. The movable slider 3 drives the fixed plate 5 at the corresponding position to move during the movement (the friction ball 16 under the support plate 15 contacts the upper surface of the operating table 1 during the movement, so as to reduce the friction force during the overall stretching), thereby achieving the purpose of stretching the patient's body, and using stretching to reposition the patient's injured vertebrae, which is convenient for subsequent surgical operations.

[0033] Example 2 like Figure 8-Figure 9As shown: In order to achieve the purpose of adjusting the clamping force of the fixing plate 5 on the patient's body to achieve the best clamping effect, this embodiment provides the following technical solutions: the support bar 7 is provided with two parts, a first main body 701 and a second main body 702, and the second main body 702 is rotatably installed on the left and right sides of the first main body 701, a pulling spring 19 is fixedly installed between the first main body 701 and the second main body 702, and a first sleeve 18 is fixedly installed in the middle position of the outer surface of the first main body 701, the first sleeve 18 is threadedly connected to the connecting bolt 9, and the front end of the second main body 702 is fixedly installed with a fixing block 17 fixedly installed on the outer surface of the fixing plate 5 by means of bolts, and a pressure sensor 20 for detecting the clamping pressure is fixedly installed on the inner surface of the fixing plate 5.

[0034] When using the connecting bolt 9 to connect with the support bar 7, since the connecting bolt 9 is threadedly connected to the first sleeve 18 on the outer surface of the first main body 701 in the support bar 7, when the connecting bolt 9 is rotated, the first main body 701 will be driven to move outward through the first sleeve 18. At this time, the second main body 702 and the first main body 701 rotate relative to each other (a pull spring 19 is provided between the second main body 702 and the first main body 701 to provide pressure), and the second main body 702 is used to apply a force to the fixing plate 5. At the same time, the pressure sensor 20 on the inside of the fixing plate 5 can judge the pressure size in real time, which is convenient for medical staff to adjust it to the best clamping effect.

[0035] Example 3 like Figure 7 and Figure 10 As shown: In order to achieve the purpose of supporting and protecting the patient's thoracic and lumbar spine after surgery, this embodiment provides the following technical solutions. After surgery, the fixation plate 5 is still worn on the patient. A cross-structured support rod 23 is provided between the upper and lower corresponding fixation plates 5. The top of the support rod 23 is fixedly installed with a second sleeve 24. An adjusting bolt 25 with a threaded structure at both ends is installed inside the second sleeve 24. The middle thread structure of the adjusting bolt 25 is threadedly connected to the internal thread structure of the second sleeve 24. The front thread structure of the adjusting bolt 25 is threadedly connected to the fixed block 17, and a rotating button 26 is fixedly installed on the top of the adjusting bolt 25.

[0036] After the operation is completed, the connecting bolts 9 are loosened to fix the support bar 7, and then the support rod 23 in a cross structure is placed between the upper and lower corresponding fixing plates 5. At this time, the adjusting bolt 25 inside the second sleeve 24 corresponds to the fixing block 17 outside the fixing plate 5. Then, the adjusting bolt 25 is driven to rotate by rotating the knob 26, and the threaded connection between the adjusting bolt 25, the second sleeve 24 and the fixing block 17 is used to change the distance between the upper and lower corresponding fixing plates 5, thereby finally achieving the purpose of supporting and protecting the patient's thoracic and lumbar spine.

[0037] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, which is convenient for those skilled in the art to understand and apply the present invention. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art of the present invention, several simple deductions or substitutions can be made without departing from the concept of the present invention, without having to go through creative work. Therefore, based on the disclosure of the present invention, simple improvements made to the present invention by those skilled in the art should be within the scope of protection of the present invention.

Claims

1. An auxiliary device for minimally invasive surgery of thoracic and lumbar fractures, comprising a mounting frame (2) fixedly mounted on the side of an operating table (1) by means of bolts, two movable sliders (3) being mounted on the outside of the mounting frame (2), and a mounting plate (4) having a bent structure being fixedly mounted above the movable sliders (3), characterized in that: Also includes: A stretching mechanism for driving the two movable sliders (3) to move is provided on the outside of the mounting frame (2); A fixing plate (5) is worn on the patient, with a total of four fixing plates (5) worn on the patient's chest and back. The front and rear corresponding fixing plates (5) are connected by a binding belt (6). A Velcro (601) structure is provided on the inner side of the binding belt (6) for adhering to the fixing plate (5). A support bar (7) in a "C"-shaped structure is provided on the outer side of the binding belt (6); A connecting plate (8) is provided at the upper end of the mounting plate (4), two connecting bolts (9) are threadedly installed inside the connecting plate (8), and an insert-type disassembly and installation structure is formed between the columnar structure on the side of the connecting plate (8) and the docking block (13), and a fixing bolt (14) is threadedly installed above the docking block (13).

2. The auxiliary device for minimally invasive surgery of thoracolumbar fractures according to claim 1, characterized in that: The stretching mechanism includes a transmission screw (10) and a limiting slide (11) installed on the outside of the mounting frame (2), and the transmission screw (10) and the limiting slide (11) are both slidably connected to the movable slider (3), and a driving motor (12) is fixedly installed outside the mounting frame (2) for driving the transmission screw (10) to rotate.

3. The auxiliary device for minimally invasive surgery of thoracolumbar fractures according to claim 2, characterized in that: An infrared grating (22) in an adjustable structure is fixedly mounted on the inner surface of the mounting frame (2), and a shielding plate (21) corresponding to the infrared grating (22) is fixedly mounted on the back of the movable slider (3). The shielding plate (21) blocks the infrared signal to determine the position of the movable slider (3).

4. The auxiliary device for minimally invasive surgery of thoracolumbar fractures according to claim 1, characterized in that: A support plate (15) corresponding to the position of the fixed plate (5) is fixedly installed below the mounting plate (4), and friction balls (16) arranged in a matrix are provided on the lower surface of the support plate (15).

5. The auxiliary device for minimally invasive surgery of thoracolumbar fractures according to claim 1, characterized in that: The support bar (7) is provided with two parts, namely a first main body (701) and a second main body (702), and the second main body (702) is rotatably mounted on the left and right sides of the first main body (701).

6. The auxiliary device for minimally invasive surgery of thoracolumbar fractures according to claim 5, characterized in that: A pulling spring (19) is fixedly installed between the first body (701) and the second body (702), and a first sleeve (18) is fixedly installed at a middle position of the outer surface of the first body (701).

7. The auxiliary device for minimally invasive surgery of thoracolumbar fractures according to claim 6, characterized in that: The first sleeve (18) is threadedly connected to the connecting bolt (9), and the front end of the second body (702) is fixedly installed with a fixing block (17) fixedly installed on the outer surface of the fixing plate (5) by means of bolts, and a pressure sensor (20) for detecting the clamping pressure is fixedly installed on the inner surface of the fixing plate (5).

8. The auxiliary device for minimally invasive surgery of thoracolumbar fractures according to claim 1, characterized in that: After the operation, the fixation plate (5) is still worn on the patient, and a cross-structured support rod (23) is provided between the upper and lower corresponding fixation plates (5).

9. The auxiliary device for minimally invasive surgery of thoracolumbar fractures according to claim 8, characterized in that: A second sleeve (24) is fixedly mounted on the top end of the support rod (23), and an adjusting bolt (25) having threaded structures at both ends is installed through the interior of the second sleeve (24).

10. The auxiliary device for minimally invasive surgery of thoracolumbar fractures according to claim 9, characterized in that: The middle thread structure of the adjusting bolt (25) is threadedly connected to the internal thread structure of the second sleeve (24), the front thread structure of the adjusting bolt (25) is threadedly connected to the fixed block (17), and the top end of the adjusting bolt (25) is fixedly mounted with a rotating knob (26).

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