Neural operation traction device

Abstract

The invention provides a nerve operation traction device which comprises a mounting ring, a rotary knob is arranged on the mounting ring, a plurality of groups of mounting seats are arranged on the mounting ring in a sliding mode, fixing assemblies are arranged on the mounting seats, and movable seats are arranged on the mounting seats along the center line of the mounting ring in a sliding mode. A pull hook installed through a connecting assembly is arranged on the movable seat, an arc plate is arranged on the installation seat in an annular sliding mode, the arc plate is connected with the movable seat through a driving mechanism, sliding of the arc plate is converted into sliding of the movable seat through the driving mechanism, and a control mechanism connected with the arc plate is arranged on the rotary knob. Rotation of the rotary knob is converted into driving of the multiple sets of arc plates to move synchronously through the control mechanism. The pulling direction of the drag hooks in the device is adjustable, the number of the drag hooks can be freely selected, the drag hooks can be assembled, the device effectively adapts to operations at different positions, and the application range of the device is widened.

Description

Technical Field

[0001] The present invention particularly relates to a neurosurgery traction device. Background Art

[0002] Neurosurgery mainly treats diseases of the brain, spinal cord and other nervous systems caused by trauma, mainly relying on surgery for treatment, such as brain trauma caused by impact and other factors, brain tumors, severe cerebrovascular diseases, spinal cord tumors, etc. Clinically, when performing neurosurgery on patients, traction devices are mostly needed to pull the skin to expose the surgical field.

[0003] For example, the Chinese invention patent with publication number CN114376630B provides a nerve retractor for brain surgery, which can realize synchronous control of two retractors. By driving the connecting rod to move independently through the extension and contraction of the cylinder, any retractor can be independently controlled, which solves the problem that the two retractors of the existing nerve retractor for brain surgery usually move synchronously and cannot be controlled independently.

[0004] However, in the current surgical process, the surgical incisions vary depending on the type of surgery and the location of the surgery, and the retraction direction and the number of traction points required are also different. Most existing traction devices can only be used for traction in two fixed directions when in use. It is not convenient to freely adjust the number of traction points and the direction of traction according to the size of the incision location and surgical requirements, which reduces its scope of application. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention proposes a neurosurgery traction device to solve the technical problem that the existing traction devices proposed in the above background technology can only perform traction in two fixed directions when in use, and it is not convenient to freely adjust the number of traction points and the direction of traction according to the incision position and size and surgical requirements, thereby reducing its scope of application.

[0006] To achieve the above object, the present invention provides the following technical solution, a neurosurgery traction device, comprising:

[0007] A mounting ring, wherein a rotatable knob is provided on the mounting ring;

[0008] The mounting seats are provided with multiple groups, and all of them are circumferentially slidably arranged on the mounting ring, and the mounting seats are provided with fixing components;

[0009] A movable seat, slidably arranged on the mounting seat along the center line of the mounting ring, and provided with a hook for mounting through a connecting assembly;

[0010] An arc plate is circumferentially slidably disposed on the mounting seat and connected to the movable seat via a driving mechanism, wherein the driving mechanism converts the sliding of the arc plate into driving the movable seat to slide; and

[0011] The control mechanism is arranged on the knob and connected to the arc plate to convert the rotation of the knob into driving the multiple groups of arc plates to move synchronously.

[0012] Furthermore, the fixing assembly includes:

[0013] A clamping plate is arranged on one side of the mounting seat, the mounting seat is L-shaped, and the mounting seat and the clamping plate form a cavity for accommodating the mounting ring;

[0014] A connecting rod is arranged on the clamping plate and is slidably inserted into the mounting seat, a pressing plate is arranged at the end of the connecting rod, and a first elastic member is arranged between the pressing plate and the mounting seat; and

[0015] The clamping block is arranged on the inner side of the clamping plate. The inner circumferential surface of the mounting ring is evenly distributed with a plurality of clamping grooves in an annular direction. The clamping block is clamped in one of the clamping grooves.

[0016] Furthermore, a positioning column is provided at the bottom of the mounting seat, and a plurality of groups of positioning holes are evenly distributed in a circumferential direction on the mounting ring, and the positioning column is clamped in one group of the positioning holes.

[0017] Furthermore, the driving mechanism includes:

[0018] A driving column is arranged at the bottom of the movable seat, and a sliding groove extending along the center line of the mounting ring is opened on the mounting seat, and the driving column is slidably clamped in the sliding groove and extends outward;

[0019] An arc track is arranged on the arc plate, and the driving column is slidably clamped in the arc track; and

[0020] The first reset component is arranged on the mounting seat and connected to the arc plate to drive the arc plate to reset when the arc plate is not subjected to external force.

[0021] Furthermore, the first reset component includes:

[0022] An arc-shaped rack is arranged on the arc plate;

[0023] A gear, rotatably disposed along its axis at the bottom of the mounting seat and meshing with the arc-shaped rack; and

[0024] A coil spring has one end connected to the gear and the other end fixedly connected to the mounting seat.

[0025] Furthermore, the control mechanism includes:

[0026] A first ratchet bar is annular and rotatably and liftably arranged on the mounting ring, wherein the outer circumferential surface of the first ratchet bar is provided with worm gear teeth;

[0027] A second ratchet bar is arc-shaped and fixedly disposed at the bottom of the arc plate and meshed with the first ratchet bar;

[0028] a worm, disposed on the knob and meshing with the worm gear teeth; and

[0029] A second reset assembly is disposed on the mounting ring and connected to the first ratchet bar to release the engagement between the first ratchet bar and the second ratchet bar.

[0030] Furthermore, the second reset component includes:

[0031] a control ring, which is escalably disposed on the mounting ring and abuts against the bottom surface of the first ratchet bar; a reset column, which is disposed on the control ring and extends out of the mounting ring; and

[0032] The second elastic member is provided in multiple groups, and two ends thereof are respectively in contact with the control ring and the mounting ring.

[0033] Furthermore, the connection component includes:

[0034] A connecting cylinder, a middle section of which is hinged on the movable seat; and

[0035] A screw rod is threadedly connected in the connecting tube, and the draw hook is arranged at the end of the screw rod.

[0036] Furthermore, an extension rod is provided on the pull hook, a stopper is provided at one end of the extension rod, the extension rod is slidably inserted into the screw rod along its axis, and a third elastic member is provided between the stopper and the inner side of one end of the screw rod.

[0037] Furthermore, the mounting ring is provided with a mounting assembly, and the mounting assembly includes:

[0038] Telescopic rod;

[0039] A jack screw, screwed to the end of the telescopic rod; and

[0040] The sliding frame is arranged on the mounting ring, and the top screw is slidingly clamped on the sliding frame and abuts against the sliding frame.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] When the device is used, it is fixed in the surgical area, and multiple sets of mounting seats are fixed at different positions on the mounting ring through the fixing components, so as to facilitate the selection of a suitable number of retractors for use according to the size of the wound location and the surgical requirements. After the multiple sets of retractors are installed on the mounting ring through the mounting seats, they are hooked on the patient's skin tissue, and then the knob is turned. During the rotation of the knob, the control mechanism drives multiple sets of arc plates to slide simultaneously. During the sliding process of the arc plates, the driving mechanism drives the movable seat to slide, so that multiple sets of retractors slide along the midline of the mounting ring at the same time, thereby quickly pulling the patient's skin tissue apart. The pulling direction of the retractors in the device is adjustable, and the number of retractors can be freely selected and assembled, which effectively adapts to surgeries in different positions and improves the scope of application of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the specific implementation of the present invention, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0044] Figure 1 A schematic diagram of the three-dimensional structure of a neurosurgery traction device provided by the present invention;

[0045] Figure 2 It is a schematic diagram of the installation structure of an installation ring in a neurosurgery traction device of the present invention;

[0046] Figure 3 It is a schematic diagram of the structure after the installation ring and the parts above it are disassembled;

[0047] Figure 4 It is a structural schematic diagram of a connecting seat in a neurosurgery traction device of the present invention;

[0048] Figure 5 It is a schematic diagram of the bottom structure of a connecting seat in a neurosurgery traction device of the present invention;

[0049] Figure 6 for Figure 4 Schematic diagram of the structure after splitting;

[0050] Figure 7 for Figure 6 A magnified schematic diagram of area a in the middle;

[0051] Figure 8 The present invention is a schematic diagram of the installation structure of a retractor in a neurosurgery traction device.

[0052] Reference numerals:

[0053] 11. Mounting ring; 12. Clamping groove; 13. Positioning hole; 14. Control ring; 15. Second elastic member; 16. Reset column; 17. First ratchet bar; 18. Worm gear;

[0054] 21. Telescopic rod; 22. Top screw; 23. Sliding frame;

[0055] 31. mounting seat; 32. slide groove; 33. clamping plate; 34. connecting rod; 35. pressing plate; 36. first elastic member; 37. clamping block; 38. positioning column;

[0056] 41. arc plate; 42. arc track; 43. arc rack; 44. second ratchet rack; 45. gear; 46. coil spring;

[0057] 51. movable seat; 52. driving column; 53. connecting tube; 54. screw rod; 55. extension rod; 56. hook; 57. stopper; 58. third elastic member;

[0058] 61. Knob; 62. Worm. DETAILED DESCRIPTION

[0059] The present invention is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technicians in this field can make some non-essential improvements and adjustments to the present invention based on the above application content.

[0060] Example:

[0061] like Figure 1 , 2 As shown in Figures 6 and 7, the present invention provides a neurosurgery traction device, comprising a mounting ring 11 and a plurality of mounting seats 31, wherein the plurality of mounting seats 31 can be circumferentially slidably arranged on the mounting ring 11, a fixing assembly is arranged on the mounting seat 31, a movable seat 51 is slidably arranged on the mounting seat 31 along the midline of the mounting ring 11, and a retractor 56 is arranged on the movable seat 51. The fixing assembly comprises a clamping plate 33 arranged on one side of the mounting seat 31, the mounting seat 31 is L-shaped, the mounting seat 31 and the clamping plate 33 form a cavity for accommodating the mounting ring 11, a connecting rod 34 is arranged on the clamping plate 33, the connecting rod 34 is slidably penetrated in the mounting seat 31, a pressing plate 35 is arranged at the end of the connecting rod 34, a first elastic member 36 is arranged between the pressing plate 35 and the mounting seat 31, a clamping block 37 is arranged on the inner side of the clamping plate 33, a plurality of clamping grooves 12 are uniformly distributed circumferentially on the inner circumferential surface of the mounting ring 11, and the clamping block 37 is clamped in one of the clamping grooves 12.

[0062] Before use, the device can be fixed in the surgical area. It is understood that in some preferred embodiments, a mounting assembly is provided on the mounting ring 11, and the mounting assembly includes a telescopic rod 21, and a top screw 22 is screwed at the end of the telescopic rod 21. A sliding frame 23 is provided on the mounting ring 11, and the top screw 22 is slidably clamped on and abuts against the sliding frame 23. The telescopic rod 21 can be controlled to extend and retract according to the surgical height to drive the mounting ring 11 to rise and fall, and the mounting ring 11 can be quickly moved to the top of the surgical position by sliding the sliding frame 23 and grabbing the sliding frame 23 along the axis of the top screw 22, and finally the top screw 22 is tightened to fix the position of the mounting ring 11.

[0063] After the fixation is completed, the appropriate number of mounting seats 31 with retractors 56 can be selected for use according to the position and size of the surgical incision, and the mounting seats 31 can be fixed at different positions on the mounting ring 11 through the fixing assembly to adjust the traction direction. When fixing, the mounting seat 31 and the splint 33 can be opened by pressing the button 35, and then the mounting seat 31 and the splint 33 can be clamped on the mounting ring 11, and the button 35 can be released. Under the action of the first elastic member 36, the mounting seat 31 and the splint 33 are controlled to close, so that the clamping block 37 is clamped in the clamping groove 12, thereby completing the installation of multiple sets of retractors 56. A positioning column 38 is provided at the bottom of the mounting seat 31, and a plurality of groups of positioning holes 13 are evenly distributed on the mounting ring 11 in a circumferential direction. The positioning column 38 is clamped in one of the groups of positioning holes 13. When placing the mounting seat 31, the position of the mounting seat 31 can be positioned by the cooperation between the positioning column 38 and the positioning hole 13, so as to avoid the position of the mounting seat 31 being offset and causing the block 37 to be unable to be clamped in the slot 12, thereby improving the convenience of using the device.

[0064] like Figure 5 , 6 As shown, in the present embodiment, an arc plate 41 is provided on the mounting seat 31 so as to slide in an annular direction. The arc plate 41 is connected to the movable seat 51 through a driving mechanism. The sliding of the arc plate 41 is converted into driving the movable seat 51 to slide through the driving mechanism. The driving mechanism includes a driving column 52 arranged at the bottom of the movable seat 51. A slide groove 32 extending along the center line of the mounting ring 11 is provided on the mounting seat 31. The driving column 52 is slidably clamped in the slide groove 32 and extends outwardly. An arc track 42 is provided on the arc plate 41. The driving column 52 is slidably clamped in the arc track 42.

[0065] After the mounting seat 31 is installed, the arc plate 41 can be controlled to slide in a circular direction inside the mounting seat 31. Since the mounting seat 31 is restricted by the driving column 52 and the slide groove 32 and can only move in a straight line, the arc plate 41 drives the movable seat 51 to slide through the arc track 42 and the driving column 52 during the sliding process, thereby driving the retractor 56 to move to retract the patient's incision to expose the surgical area.

[0066] like Figures 2 to 6 As shown, in this embodiment, a rotatable knob 61 is provided on the mounting ring 11, and a control mechanism connected to the arc plate 41 is provided on the knob 61, and the rotation of the knob 61 is converted into driving the synchronous movement of multiple groups of arc plates 41 through the control mechanism. The control mechanism includes a first ratchet bar 17 rotatably and liftably provided on the mounting ring 11, the first ratchet bar 17 is annular, a second ratchet bar 44 is fixedly provided at the bottom of the arc plate 41, the second ratchet bar 44 is arc-shaped, and the second ratchet bar 44 meshes with the first ratchet bar 17, and a worm 62 is provided on the knob 61, and the worm 62 meshes with the worm wheel teeth 18.

[0067] After the installation of the retractor 56 and the connection with the skin are completed, the worm 62 can be driven to rotate by turning the knob 61. During the rotation, the worm 62 drives the first ratchet bar 17 to rotate on the mounting ring 11 by engaging with the worm wheel teeth 18, so that the first ratchet bar 17 and the second ratchet bar 44 cooperate to control the synchronous sliding of multiple groups of arc plates 41, so that multiple groups of retractors 56 move at the same time to quickly retract the surgical incision.

[0068] like Figure 4 , 6 As shown in Figure 8, in this embodiment, the movable seat 51 is connected to the hook 56 through a connecting assembly, which includes a connecting tube 53. The middle section of the connecting tube 53 is hinged on the movable seat 51. A screw 54 is threaded in the connecting tube 53. The hook 56 is arranged at the end of the screw 54. An extension rod 55 is arranged on the hook 56. A stopper 57 is arranged at one end of the extension rod 55. The extension rod 55 slides along its axis and passes through the screw 54. A third elastic member 58 is arranged between the stopper 57 and the inner side of one end of the screw 54.

[0069] When installing the retractor 56, the extension rod 55 can be pulled to make the stopper 57 slide in the screw rod 54 and compress the third elastic member 58, so as to facilitate the control of the movement of the retractor 56 when the mounting seat 31 is fixed so as to hook the retractor 56 on the incision, and at the same time, there is a certain buffer space for the movement of the retractor 56 in the process of controlling the sliding of the mounting seat 31, so as to avoid excessive pulling force on the incision and cause secondary damage. And the connecting tube 53 can rotate on the movable seat 51 to adjust the angle of the retractor 56, so as to adapt to different surgical scenarios.

[0070] like Figures 2 to 7As shown, in this embodiment, the driving mechanism further includes a first reset component disposed on the mounting seat 31 and connected to the arc plate 41, and the arc plate 41 is driven to reset by the first reset component when the arc plate 41 is not subjected to external force. The first reset component includes an arc-shaped rack 43 disposed on the arc plate 41, a rotatable gear 45 is disposed at the bottom of the mounting seat 31, the gear 45 is meshed with the arc-shaped rack 43, one end of the coil spring 46 is connected to the gear 45, and the other end is fixedly connected to the mounting seat 31. The control structure also includes a second reset component on the mounting ring 11 and connected to the first ratchet bar 17. The engagement between the first ratchet bar 17 and the second ratchet bar 44 is released by the second reset component. The second reset component includes a control ring 14 that can be lifted and lowered and is arranged on the mounting ring 11. The control ring 14 abuts against the bottom surface of the first ratchet bar 17. A reset column 16 is arranged on the control ring 14, and the reset column 16 extends out of the mounting ring 11. The control ring 14 also includes multiple groups of second elastic members 15. The two ends of the multiple groups of second elastic members 15 abut against the control ring 14 and the mounting ring 11 respectively.

[0071] When the installation of multiple groups of mounting seats 31 is completed, the control ring 14 pushes the first ratchet bar 17 upward under the action of multiple groups of second elastic members 15, so that the first ratchet bar 17 is in meshing state with the second ratchet bar 44. During the rotation of the first ratchet bar 17 and the driving of the second ratchet bar 44 and the arc plate 41 to slide, the gear 45 is driven to rotate by the engagement of the gear 45 with the arc rack 43, so that the coil spring 46 is deformed. After the operation is completed, the reset column 16 can be pressed downward to drive the control ring 14 to slide along its axis on the mounting ring 11, so that the first ratchet bar 17 is disengaged from the multiple groups of second ratchet bars 44 at the same time to release the movement control of the arc plate 41, so that the gear 45 can be controlled to reverse under the action of the coil spring 46, driving the arc plate 41 to quickly reset, so that multiple groups of retractors 56 are reset at the same time, and the traction on the incision is quickly released, so as to avoid the retractor 56 from being disassembled for a long time or the disassembly process is cumbersome, resulting in secondary damage to the incision.

[0072] Specific usage and beneficial effects of the present invention:

[0073] When the device is in use, it is fixed in the surgical area through the cooperation of the telescopic rod 21 and the sliding frame 23, and multiple groups of mounting seats 31 are fixed to different positions on the mounting ring 11 through the fixing assembly, so as to facilitate the selection of a suitable number of retractors 56 for use according to the wound location and size and surgical requirements. After the multiple groups of retractors 56 are installed on the mounting ring 11 through the mounting seats 31, they are hooked on the patient's skin tissue, and then by turning the knob 61, the knob 61 drives the multiple groups of arc plates 41 to slide simultaneously through the control mechanism during the rotation process, and the arc plates 41 drive the movable seat 51 to slide through the driving mechanism during the sliding process, so that the multiple groups of retractors 56 slide along the midline of the mounting ring 11 at the same time, thereby quickly pulling the patient's skin tissue apart. The pulling direction of the retractors 56 in the device is adjustable, and the number of retractors 56 can be freely selected and assembled, which effectively adapts to surgeries at different positions and improves the scope of application of the device.

[0074] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments. On the basis of the present invention, some modifications or improvements can be made thereto, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A neurosurgery traction device, characterized in that: Included are: A mounting ring (11), wherein a rotatable knob (61) is provided on the mounting ring (11); A plurality of mounting seats (31) are provided, and all of them are circumferentially slidably arranged on the mounting ring (11), and a fixing component is arranged on the mounting seat (31); A movable seat (51) is slidably arranged on the mounting seat (31) along the center line of the mounting ring (11), and a draw hook (56) is arranged on the movable seat (51) for installation through a connecting assembly; An arc plate (41) is circumferentially slidably disposed on the mounting seat (31) and is connected to the movable seat (51) via a driving mechanism, wherein the driving mechanism converts the sliding of the arc plate (41) into driving the movable seat (51) to slide; and A control mechanism is arranged on the knob (61) and connected to the arc plate (41) to convert the rotation of the knob (61) into driving the multiple groups of arc plates (41) to move synchronously.

2. A neurosurgery traction device according to claim 1, characterized in that: The fixing assembly comprises: a clamping plate (33) arranged on one side of the mounting seat (31); the mounting seat (31) is L-shaped; the mounting seat (31) and the clamping plate (33) form a cavity for accommodating the mounting ring (11); A connecting rod (34) is arranged on the clamping plate (33) and is slidably inserted into the mounting seat (31); a pressing plate (35) is arranged at the end of the connecting rod (34); and a first elastic member (36) is arranged between the pressing plate (35) and the mounting seat (31); and The clamping block (37) is arranged on the inner side of the clamping plate (33); the inner circumferential surface of the mounting ring (11) is evenly distributed with a plurality of groups of clamping grooves (12) in the circumferential direction; the clamping block (37) is clamped in one group of the clamping grooves (12).

3. A neurosurgery traction device according to claim 2, characterized in that: A positioning column (38) is provided at the bottom of the mounting seat (31), and a plurality of groups of positioning holes (13) are evenly distributed in an annular direction on the mounting ring (11), and the positioning column (38) is clamped in one group of the positioning holes (13).

4. A neurosurgery traction device according to claim 1, characterized in that: The driving mechanism comprises: A driving column (52) is arranged at the bottom of the movable seat (51); a sliding groove (32) extending along the center line of the mounting ring (11) is opened on the mounting seat (31); the driving column (52) is slidably locked in the sliding groove (32) and extends outward; An arc track (42) is arranged on the arc plate (41), and the driving column (52) is slidably mounted in the arc track (42); and A first resetting component is arranged on the mounting seat (31) and connected to the arc plate (41) so as to drive the arc plate (41) to reset when the arc plate (41) is not subjected to external force.

5. A neurosurgery traction device according to claim 4, characterized in that: The first reset component includes: An arc-shaped rack (43) is arranged on the arc plate (41); A gear (45) is rotatably disposed along its axis at the bottom of the mounting seat (31) and meshes with the arc-shaped rack (43); and A coil spring (46) has one end connected to the gear (45) and the other end fixedly connected to the mounting seat (31).

6. A neurosurgery traction device according to claim 1, characterized in that: The control mechanism includes: A first ratchet bar (17) is annular and is rotatably and liftably arranged on the mounting ring (11), and a worm gear tooth (18) is arranged on the outer circumferential surface of the first ratchet bar (17); A second ratchet bar (44) is arc-shaped and fixedly disposed at the bottom of the arc plate (41) and meshed with the first ratchet bar (17); A worm (62) is disposed on the knob (61) and meshes with the worm gear teeth (18); and A second reset assembly is arranged on the mounting ring (11) and connected to the first ratchet bar (17) to release the engagement between the first ratchet bar (17) and the second ratchet bar (44).

7. A neurosurgery traction device according to claim 6, characterized in that: The second reset component includes: A control ring (14) is movably arranged on the mounting ring (11) and abuts against the bottom surface of the first ratchet bar (17); a reset post (16) disposed on the control ring (14) and extending out of the mounting ring (11); and The second elastic member (15) is provided in multiple groups, and the two ends thereof are respectively in contact with the control ring (14) and the mounting ring (11).

8. A neurosurgery traction device according to claim 1, characterized in that: The connection component includes: A connecting cylinder (53), a middle section of which is hinged on the movable seat (51); and The screw rod (54) is threadedly connected in the connecting tube (53), and the draw hook (56) is arranged at the end of the screw rod (54).

9. A neurosurgery traction device according to claim 8, characterized in that: An extension rod (55) is provided on the pull hook (56), a stopper (57) is provided at one end of the extension rod (55), the extension rod (55) is slidably inserted into the screw rod (54) along its axis, and a third elastic member (58) is provided between the stopper (57) and the inner side of one end of the screw rod (54).

10. The neurosurgery traction device according to claim 1, characterized in that: The mounting ring (11) is provided with a mounting assembly, and the mounting assembly comprises: Telescopic rod (21); A top screw (22) is screwed onto the end of the telescopic rod (21); and The sliding frame (23) is arranged on the mounting ring (11), and the top screw (22) is slidably mounted on the sliding frame (23) and abuts against it.

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