Wound protection retractor for spine posterior approach operation

Abstract

The invention discloses a spine posterior operation wound protection retractor which comprises a grip, one end of the grip is connected with an angle adjusting mechanism, one end of the angle adjusting mechanism is connected with a supporting frame, a first stud is installed on the supporting frame, a connecting plate is movably connected to the first stud, and a second stud is installed on the connecting plate. A protection box is fixed to one end of the connecting plate, a distance adjusting mechanism is arranged in the protection box, a connecting block is installed on the distance adjusting mechanism, a bearing box is fixed to the lower end of the connecting block, a vertical plate is detachably installed in the bearing box, and an arc-shaped traction block is detachably connected to the lower end of the vertical plate. By means of the spine posterior operation wound traction supporting device, stable supporting of spine posterior operation wound traction can be achieved, sufficient angle adjustment can be conducted according to the position and angle of a wound, the adjustment precision is further improved, and meanwhile the opening stability and firmness can be guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of wound protection and retraction in posterior spinal surgery, and in particular to a wound protection and retractor in posterior spinal surgery. Background Art

[0002] In recent years, posterior fusion and reduced incision surgery have developed rapidly. The entry, operation and removal of surgical instruments through the incision (or hole hereinafter referred to as the incision) will further damage the incision tissue. The exposed incision is more susceptible to infection. Irregular contraction of the incision or free tissue will obstruct the surgical field of view and affect the surgical operation. The traction part of the conventional wound retractor adopts a serrated setting, which causes greater damage to the soft tissue. It is easy to cause paraspinal muscle blood supply destruction and muscle necrosis after surgery, which in turn causes wound skin necrosis, delayed wound healing, and even wound infection, causing physical and mental losses to patients. For this reason, we proposed a wound protection retractor for posterior spinal surgery to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and to provide a wound protection retractor for posterior spinal surgery.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A wound protection retractor for posterior spinal surgery comprises a handle, one end of the handle is connected to an angle adjustment mechanism, one end of the angle adjustment mechanism is connected to a support frame, a first stud is installed on the support frame, a connecting plate is movably connected to the first stud, a protection box is fixed to one end of the connecting plate, a spacing adjustment mechanism is provided in the protection box, a connecting block is installed on the spacing adjustment mechanism, a supporting box is fixed to the lower end of the connecting block, a vertical plate is detachably installed in the supporting box, and an arc-shaped traction block is detachably connected to the lower end of the vertical plate.

[0006] Preferably, the angle adjustment mechanism includes a second turntable fixed at one end of the handle, one end of the second turntable is connected to a rotating shaft, one end of the rotating shaft is connected to the first turntable, the first turntable is provided with a plurality of through holes at equal intervals, the second turntable is provided with a plurality of positioning holes at equal intervals around a circle, one of the through holes is penetrated by an insertion rod, and one end of the insertion rod extends into one of the positioning holes.

[0007] Preferably, the number of the through holes and positioning holes is 15-20.

[0008] Preferably, a connecting block is passed through the first stud, two nuts are threadedly screwed on both ends of the first stud, two ends of the two nuts respectively abut against two sides of the connecting block, and one end of the connecting plate is fixed to one side of the connecting block.

[0009] Preferably, the spacing adjustment mechanism includes a second bearing block and a first bearing block fixed in the protective box, a second sliding groove is provided in the second bearing block, a second sliding groove is installed in the second sliding groove, one side in the second sliding groove is rotatably connected with a second stud, one end of the second stud is fixed with a rotating wheel, the second sliding block is threadedly sleeved on the second stud, the upper end of the second sliding block is rotatably connected with two connecting rods, the first bearing block is provided with a first sliding groove, the first sliding groove is installed on both sides of the first sliding groove, a connecting rod on the same side is rotatably connected to a first sliding block on the same side, a moving plate is fixed to one end of the first sliding block, one end of the moving plate passes through the first bearing block and the side wall of the protective box and extends to one side of the protective box, and a connecting block on the same side is fixed to one end of a moving plate on the same side.

[0010] Preferably, a screw is fixed at one end of the arc-shaped traction block, a threaded blind hole is provided on one side of the lower end of the vertical plate, one end of the screw is threadedly screwed in the threaded blind hole, and the two arc-shaped traction blocks correspond to each other.

[0011] Preferably, an I-shaped traction block is fixed to one end of the screw rod, and the two I-shaped traction blocks correspond to each other, and one end of the I-shaped clamping block is arranged in an arc shape.

[0012] Preferably, a limiting rod is provided through one side of the carrying box, a plurality of limiting holes are provided at equal intervals on one side of the vertical plate, and one end of the limiting rod extends into one of the limiting holes.

[0013] In the present invention, when it is necessary to retract the wound, the protective box is set at the upper end of the wound by holding the handle with one hand, so that the two traction blocks at the lower end correspond to the incision, and then the rotating wheel is rotated to drive the second stud to rotate, and the second slider is driven to move with the rotation of the second stud, and the second slider moves toward the end away from the rotating wheel, and the first slider is driven to move to both sides through the connecting rod, and the movement of the first slider drives the moving plate and the connecting block to move, and then drives the lower end vertical plate and the traction block to move to both sides of the incision, and the two sides of the incision are stably moved to both sides, thereby achieving stable limiting.

[0014] The present invention has the following advantages:

[0015] 1. Through the setting of the angle adjustment mechanism, the overall adjustment of the lower frame structure can be achieved, which is convenient for the front traction opening to adapt to the arc angle;

[0016] 2. The overall offset can be adjusted by moving the thread of the connecting block on the stud, further improving the accuracy of the adjustment;

[0017] 3. Through the setting of the spacing adjustment mechanism, the traction block can be stably opened, and the stability and firmness of the opening can be ensured;

[0018] 4. The setting of arc-shaped traction blocks and I-shaped traction blocks can solve the damage caused by long-term retraction of wounds by conventional retractors, and adapt to incisions of different depths;

[0019] 5. Through the movable connection between the carrying box and the vertical plate, the distance can be extended, making it convenient for the operator to perform surgery in the middle;

[0020] In summary, the present invention can not only achieve stable support for wound traction in posterior spinal surgery, but also can fully adjust the angle according to the position and angle of the wound, further improving the accuracy of the adjustment, while ensuring the stability and firmness of the opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the present invention;

[0022] Figure 2 It is a structural diagram of the arc-shaped traction block of the present invention;

[0023] Figure 3 It is a structural diagram of the spacing adjustment mechanism of the present invention;

[0024] Figure 4 for Figure 1 A magnified view of the structure at A;

[0025] Figure 5 is a structural diagram of a second turntable of the present invention;

[0026] Figure 6 This is a structural diagram of the I-type traction block of the present invention.

[0027] In the figure: 1 handle, 2 first turntable, 3 support frame, 4 first stud, 5 connecting plate, 6 protection box, 7 connecting block, 8 moving plate, 9 vertical plate, 10 threaded blind hole, 11 connecting block, 12 nut, 13 arc-shaped traction block, 14 screw, 15 I-type traction block, 16 rotating shaft, 17 second turntable, 18 plug rod, 19 through hole, 20 positioning hole, 21 first slider, 22 first bearing block, 23 second bearing block, 24 second stud, 25 rotating wheel, 26 second slide groove, 27 second slider, 28 connecting rod, 29 first slide groove, 30 bearing box, 31 limiting rod, 32 limiting hole. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] Example 1

[0030] Reference Figure 1-5A wound protection retractor for posterior spinal surgery comprises a handle 1, one end of which is connected to an angle adjustment mechanism, the angle adjustment mechanism comprises a second turntable 17 fixed to one end of the handle 1, one end of the second turntable 17 is connected to a rotating shaft 16, one end of the rotating shaft 16 is connected to a first turntable 2, a plurality of through holes 19 are arranged at equal intervals on the first turntable 2, a plurality of positioning holes 20 are arranged at equal intervals around the second turntable 17, one of the through holes 19 is penetrated by an insertion rod 18, one end of the insertion rod 18 extends into one of the positioning holes 20, through the setting of the turntable, the angle of one end can be fully adjusted, and the insertion rod 18 is used for locking and fixing to ensure the flexibility of adjustment;

[0031] One end of the angle adjustment mechanism is connected to a support frame 3, a first stud 4 is installed on the support frame 3, a connecting plate 5 is movably connected to the first stud 4, a connecting block 11 is penetrated through the first stud 4, two ends of the first stud 4 are threadedly screwed with two nuts 12, the two ends of the two nuts 12 are respectively against the two sides of the connecting block 11, one end of the connecting plate 5 is fixed to one side of the connecting block 11, and the nuts 12 are used to achieve locking and fixing, thereby ensuring the stability of the fixation, and the use position can be further adjusted;

[0032] A protection box 6 is fixed to one end of the connecting plate 5, and a spacing adjustment mechanism is provided in the protection box 6. The spacing adjustment mechanism includes a second bearing block 23 and a first bearing block 22 fixed in the protection box 6. A second slide groove 26 is provided in the second bearing block 23, and a second slider 27 is installed in the second slide groove 26. A second stud 24 is rotatably connected to one side of the second slide groove 26, and a rotating wheel 25 is fixed to one end of the second stud 24. The second slider 27 is threadedly sleeved on the second stud 24, and two connecting rods 28 are rotatably connected to the upper end of the second slider 27. A first slide groove 29 is provided on the first bearing block 22, and first sliders 21 are installed on both sides of the first slide groove 29. A connecting rod 28 on the same side is rotatably connected to a first slider 21 on the same side. A moving plate 8 is fixed to one end of the first slider 21, and one end of the moving plate 8 passes through the first bearing block 22 and the side wall of the protection box 6 and extends to one side of the protection box 6. A connecting block 7 on the same side is fixed to one end of a moving plate 8 on the same side. Stable contraction adjustment is achieved by rotating the rotating wheel 25, thereby achieving rapid adjustment.

[0033] A connecting block 7 is installed on the spacing adjustment mechanism, and a vertical plate 9 is fixed to the lower end of the connecting block 7. An arc-shaped traction block 13 is detachably connected to the lower end of the vertical plate 9. The number of through holes 19 and positioning holes 20 is 15-20. A screw 14 is fixed to one end of the arc-shaped traction block 13. A threaded blind hole 10 is provided on one side of the lower end of the vertical plate 9. One end of the screw 14 is threadedly screwed into the threaded blind hole 10, and the two arc-shaped traction blocks 13 correspond to each other and are used for small-scale incision traction. A limiting rod 31 is penetrated through one side of the carrier box 30, and a plurality of limiting holes 32 are evenly spaced on one side of the vertical plate 9. One end of the limiting rod 31 extends into one of the limiting holes 32. Through the movable connection between the carrier box and the vertical plate, the distance can be extended, which is convenient for the operator to perform surgical operations in the middle.

[0034] Example 2

[0035] Reference Figure 6 The difference between the second embodiment and the first embodiment is that the second embodiment further comprises: an I-type traction block 15 is fixed to one end of the screw rod 14, and the two I-type traction blocks 15 correspond to each other, and one end of the I-type clamping block 15 is arranged in an arc shape, so that a large incision wound can be retracted;

[0036] It includes a handle 1, one end of the handle 1 is connected to an angle adjustment mechanism, the angle adjustment mechanism includes a second turntable 17 fixed to one end of the handle 1, one end of the second turntable 17 is connected to a rotating shaft 16, one end of the rotating shaft 16 is connected to a first turntable 2, a plurality of through holes 19 are arranged at equal intervals on the first turntable 2, a plurality of positioning holes 20 are arranged at equal intervals around the second turntable 17, one of the through holes 19 is penetrated by an insertion rod 18, one end of the insertion rod 18 extends into one of the positioning holes 20, through the setting of the turntable, the angle of one end can be fully adjusted, and the insertion rod 18 is used for locking and fixing to ensure the flexibility of adjustment;

[0037] One end of the angle adjustment mechanism is connected to a support frame 3, a first stud 4 is installed on the support frame 3, a connecting plate 5 is movably connected to the first stud 4, a connecting block 11 is penetrated through the first stud 4, two ends of the first stud 4 are threadedly screwed with two nuts 12, the two ends of the two nuts 12 are respectively against the two sides of the connecting block 11, one end of the connecting plate 5 is fixed to one side of the connecting block 11, and the nuts 12 are used to achieve locking and fixing, thereby ensuring the stability of the fixation, and the use position can be further adjusted;

[0038] A protection box 6 is fixed to one end of the connecting plate 5, and a spacing adjustment mechanism is provided in the protection box 6. The spacing adjustment mechanism includes a second bearing block 23 and a first bearing block 22 fixed in the protection box 6. A second slide groove 26 is provided in the second bearing block 23, and a second slider 27 is installed in the second slide groove 26. A second stud 24 is rotatably connected to one side of the second slide groove 26, and a rotating wheel 25 is fixed to one end of the second stud 24. The second slider 27 is threadedly sleeved on the second stud 24, and two connecting rods 28 are rotatably connected to the upper end of the second slider 27. A first slide groove 29 is provided on the first bearing block 22, and first sliders 21 are installed on both sides of the first slide groove 29. A connecting rod 28 on the same side is rotatably connected to a first slider 21 on the same side. A moving plate 8 is fixed to one end of the first slider 21, and one end of the moving plate 8 passes through the first bearing block 22 and the side wall of the protection box 6 and extends to one side of the protection box 6. A connecting block 7 on the same side is fixed to one end of a moving plate 8 on the same side. Stable contraction adjustment is achieved by rotating the rotating wheel 25, thereby achieving rapid adjustment.

[0039] In the present invention, when it is necessary to retract the wound, the handle 1 is held in one hand to set the protection box 6 at the upper end of the wound, so that the two traction blocks at the lower end correspond to the incision, and then the rotating wheel 25 is rotated to drive the second stud 24 to rotate. As the second stud 24 rotates, the second slider 27 is driven to move, and the second slider 27 moves toward the end away from the rotating wheel 25, and the first slider 21 is driven to move to both sides through the connecting rod 28. As the first slider 21 moves, the movable plate 8 and the connecting block 7 are driven to move, and then the lower end vertical plate 9 and the traction block are driven to move to both sides of the incision, and the two sides of the incision are stably moved to both sides, thereby achieving stable limiting.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wound protection retractor for posterior spinal surgery, comprising a handle (1), characterized in that: One end of the handle (1) is connected to an angle adjustment mechanism, one end of the angle adjustment mechanism is connected to a support frame (3), a first stud (4) is installed on the support frame (3), a connecting plate (5) is movably connected to the first stud (4), a protection box (6) is fixed to one end of the connecting plate (5), a spacing adjustment mechanism is provided in the protection box (6), a connecting block (7) is installed on the spacing adjustment mechanism, a supporting box (30) is fixed to the lower end of the connecting block (7), a vertical plate (9) is detachably installed in the supporting box (30), and an arc-shaped traction block (13) is detachably connected to the lower end of the vertical plate (9).

2. The wound protection retractor for posterior spinal surgery according to claim 1, characterized in that: The angle adjustment mechanism comprises a second turntable (17) fixed at one end of the handle (1), one end of the second turntable (17) is connected to a rotating shaft (16), one end of the rotating shaft (16) is connected to the first turntable (2), a plurality of through holes (19) are provided at equal intervals on the first turntable (2), a plurality of positioning holes (20) are provided at equal intervals around the second turntable (17), an insertion rod (18) is inserted through one of the through holes (19), and one end of the insertion rod (18) extends into one of the positioning holes (20).

3. The wound protection retractor for posterior spinal surgery according to claim 2, characterized in that: The number of the through holes (19) and the positioning holes (20) is 15-20.

4. The wound protection retractor for posterior spinal surgery according to claim 1, characterized in that: A connecting block (11) is provided through the first stud (4), two ends of the first stud (4) are threadedly connected with two nuts (12), the two ends of the two nuts (12) respectively abut against the two sides of the connecting block (11), and one end of the connecting plate (5) is fixed to one side of the connecting block (11).

5. The wound protection retractor for posterior spinal surgery according to claim 1, characterized in that: The spacing adjustment mechanism comprises a second bearing block (23) and a first bearing block (22) fixed in the protection box (6); a second slide groove (26) is provided in the second bearing block (23); a second slider (27) is installed in the second slide groove (26); a second stud (24) is rotatably connected to one side of the second slide groove (26); a rotating wheel (25) is fixed to one end of the second stud (24); the second slider (27) is threadedly sleeved on the second stud (24); the upper end of the second slider (27) is rotatably connected to two connecting rods ( 28), a first slide groove (29) is provided on the first bearing block (22), first sliders (21) are installed on both sides of the first slide groove (29), a connecting rod (28) on the same side is rotatably connected to a first slider (21) on the same side, a movable plate (8) is fixed to one end of the first slider (21), one end of the movable plate (8) passes through the first bearing block (22) and the side wall of the protection box (6) and extends to one side of the protection box (6), and a connecting block (7) on the same side is fixed to one end of a movable plate (8) on the same side.

6. The wound protection retractor for posterior spinal surgery according to claim 1, characterized in that: A screw rod (14) is fixed to one end of the arc-shaped traction block (13), a threaded blind hole (10) is provided on one side of the lower end of the vertical plate (9), one end of the screw rod (14) is threadedly screwed into the threaded blind hole (10), and the two arc-shaped traction blocks (13) correspond to each other.

7. The wound protection retractor for posterior spinal surgery according to claim 6, characterized in that: An I-shaped traction block (15) is fixed to one end of the screw rod (14), and the two I-shaped traction blocks (15) correspond to each other. One end of the I-shaped clamping block (15) is arranged in an arc shape.

8. The wound protection retractor for posterior spinal surgery according to claim 1, characterized in that: A limiting rod (31) is provided through one side of the carrying box (30), a plurality of limiting holes (32) are provided at equal intervals on one side of the vertical plate (9), and one end of the limiting rod (31) extends into one of the limiting holes (32).

Images