Skin traction device for laparoscopic thyroid gland

Abstract

The invention provides a skin traction device for laparoscopic thyroidec.The skin traction device comprises two arc-shaped supporting frames, the two supporting frames are symmetrically arranged, fixing plates are fixedly connected to the sides, close to each other, of the two supporting frames, and the fixing plates corresponding to the two supporting frames are adjustably connected; movable cavities are formed in the ends, away from the fixing plate, of the two supporting frames, inner frames are arranged on the upper side faces of the sides, close to each other, of the two supporting frames, and clamping groove assemblies are connected to the sides, away from each other, of the two inner frames in a ball sliding mode. The push block is used for driving the flexible sliding strip to enable the rolling wheel to drive the connecting plate to swing, then the end plate swings, the shifting block is adjusted to drive the swing base to enable the elevation angle of the connecting plate to be changed, then the elevation angle of the end plate is changed, in addition, the angles of the two supporting frames can be adjusted, and flexibility is greatly improved. The device adapts to wound shape adjustment during operation, and great convenience is brought to the operation process.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and specifically relates to a skin traction device for laparoscopic thyroid surgery. Background Art

[0002] Laparoscopic thyroidectomy usually refers to radical laparoscopic thyroidectomy, which mainly involves completely removing one side of the patient's thyroid through laparoscopy and then performing lymph node dissection, with the advantages of less trauma and higher aesthetics. The indications for radical laparoscopic thyroidectomy include the size, location of the thyroid tumor, the scope of lymph node dissection, the patient's age, cardiopulmonary function, etc. During laparoscopic thyroidectomy, a skin traction device is required, such as a disposable surgical retractor produced by Nanjing Changfeng Biotechnology Co., Ltd. Although it is safer to use once, it cannot fine-tune and change the shape of the wound traction during use. It can only be adjusted by pulling the traction line connected to the thyroid hook needle to adjust or change the position where it is stuck, which is not convenient to operate during the operation. Summary of the Invention

[0003] To achieve the above objectives, the present invention is realized through the following technical solutions: A skin traction device for laparoscopic thyroid surgery includes two arc-shaped support frames. The two support frames are symmetrically arranged, and fixing plates are fixedly connected to the sides close to each other. The fixing plates corresponding to the two support frames are adjustably connected. Activity cavities are provided at the ends of the two support frames far from the fixing plates. On the upper side of the sides of the two support frames close to each other, there are inner frames, and card slot components are ball-slidably connected to the sides of the two inner frames away from each other.

[0004] Side guide cavities are provided inside the sides of the two support frames away from each other. A U-shaped flexible slide bar is provided inside the side guide cavity. A push block is fixedly connected to the outer side of the side of the flexible slide bar away from the fixing plate. The push block extends out of the side guide cavity and is slidably connected therewith. The side guide cavity is correspondingly communicated with the activity cavity. A dial block and a swing seat are rotatably connected inside the activity cavity. The dial block is in arc contact with the swing seat. A roller is rotatably connected to the upper part of the swing seat. The flexible slide bar straddles the outside of the roller. A connecting plate is fixedly connected to the lower end of the roller. The connecting plate extends out of the activity cavity and a end plate is fixedly connected to the end outside the activity cavity. A side groove is provided on the side of the end plate away from the fixing plate.

[0005] Preferably, the card slot component is composed of a card plate, a slide rod, a slide ball and a spring. The slide ball is slidably connected inside the sides of the two inner frames away from each other. One end of the slide rod extends into the inside of the slide ball and is slidably connected therewith, and the other end is fixedly connected to the card plate. The spring is located inside the slide ball and fixedly connects the slide ball and the slide rod.

[0006] Preferably, an inner opening is provided on the side of the end plate away from the side groove, and a cylindrical support rod is clamped inside the inner opening. The height by which the support rod extends upward from the end plate is the same as the thickness of the end plate.

[0007] Preferably, one end of the swing seat away from the connecting plate is fixedly connected with a flexible plate. The other end of the flexible plate is fixed to the end face of the movable cavity facing the side guide cavity, and the end face of the flexible plate facing the side guide cavity is 0.2 - 1.5 mm lower than the lower bottom surface of the side guide cavity.

[0008] Preferably, the flexible slide bar is composed of an outer sleeve and inner steel wires. The diameter of the inner steel wires is 0.2 mm and they are arranged at equal intervals in a square array, and the outer sleeve wraps around the outside of the inner steel wires.

[0009] Preferably, an anti-slip sleeve is sleeved on the outside of the push block facing the outer arc surface of the support frame. Accommodation grooves are provided on one side of each of the two fixing plates facing each other. A damping block is arranged inside the two fixing plates, and a screwing rod passes through the damping block. The screwing rod passes through the two fixing plates and is threadedly connected to the rear fixing plate in the passing direction.

[0010] Preferably, a placement groove is provided upward on the swing seat. The connection part of the flexible slide bar and the roller is located in the placement groove, and a pressing plate located above the flexible slide bar is fixedly connected to one side of the placement groove facing the side guide cavity.

[0011] Preferably, the lower part of the side of the swing seat facing the connecting plate is an arc surface. The dialing block includes a dialing bar that cooperates with the arc surface of the swing seat and an adjusting knob fixedly connected to the dialing bar. One end of the adjusting knob is located outside the support frame and is threadedly connected to the side wall of the support frame on the side of the movable cavity.

[0012] Preferably, a bayonet is provided on the side wall of the inner frame above the sliding ball. The width of the bayonet is the same as the width of the part of the clamping plate connecting the sliding rod.

[0013] The present invention provides a skin traction device for laparoscopic thyroidectomy, having the following beneficial effects:

[0014] In the present invention, by using the push block to drive the flexible slide bar, the roller drives the connecting plate to swing, thereby realizing the swing of the end plate. By adjusting the dialing block to drive the swing seat, the elevation angle of the connecting plate is changed, thereby changing the elevation angle of the end plate. In addition, the angles of the two support frames can also be adjusted, greatly improving the flexibility. By changing the angle of the end plate, it adapts to the adjustment of the wound shape during the operation, greatly facilitating the surgical process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present invention;

[0016] Figure 2This is a cross-sectional view of the present invention in the vertical plane where the axis of one of the sliding rods is located;

[0017] Figure 3 This is a top view of the present invention;

[0018] Figure 4 This is a side view of the present invention;

[0019] Figure 5 This is a partial cross-sectional view of the present invention at the fixed plate and the screwing rod;

[0020] Figure 6 This is a horizontal cross-sectional view of the present invention at the side guide cavity;

[0021] Figure 7 This is a schematic structural connection diagram of the present invention at the swing seat.

[0022] Wherein, 1, support frame; 2, support rod; 3, end plate; 4, ball guide groove; 5, side guide cavity; 6, push block; 7, screwing rod; 8, fixed plate; 9, inner frame; 10, clamping plate; 11, bayonet; 12, sliding rod; 13, sliding ball; 14, spring; 15, flexible sliding strip; 16, adjusting knob; 18, connecting plate; 19, flexible plate; 20, dialing block; 21, roller; 22, swing seat. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Embodiment 1:

[0025] As Figure 1-7As shown in the figure, an embodiment of the present invention provides a skin traction device for laparoscopic thyroidectomy, which includes two arc-shaped support frames 1. The two support frames 1 are symmetrically arranged, and fixing plates 8 are fixedly connected to the side close to each other. The fixing plates 8 corresponding to the two support frames 1 are adjustably connected. Specifically, receiving grooves are provided on the side of the two fixing plates 8 facing each other. A damping block is arranged inside the two fixing plates 8. After being squeezed, the damping block fills the inside of the two fixing plates 8, thereby increasing the friction between the damping block and the two fixing plates 8. A screwing rod 7 passes through the inside of the damping block. The screwing rod 7 passes through the two fixing plates 8 and is threadedly connected to the fixing plate 8 at the rear side in the passing direction. In the above, after loosening the screwing rod 7, the angles of the two fixing plates 8 can be adjusted. After tightening the screwing rod 7 again, the angle between the two fixing plates 8 can be fixed. The above damping block is made of medical rubber material, and the resistance of the relative rotation of the two fixing plates 8 and the resistance of the rotation of the screwing rod 7 are increased through the damping block;

[0026] Activity cavities are provided at the ends of the two support frames 1 away from the fixing plates 8. The above activity cavities are located at the ends of the two support frames 1 away from each other and the activity cavities are flared and opened outward. The upper side of the two support frames 1 on the side close to each other includes an inner frame 9. The inner frame 9 and the support frame 1 are of an integral structure. The inner frame 9 and the support frame 1 are injection molded from a medically acceptable outer shell plastic material;

[0027] A clamping groove assembly is ball-slidably connected to the sides of the two inner frames 9 away from each other. The clamping groove assembly is composed of a clamping plate 10, a sliding rod 12, a sliding ball 13 and a spring 14. The clamping plate 10 is injection molded from a medically acceptable outer shell plastic material. The sliding ball 13 is slidably connected to the inside of the sides of the two inner frames 9 away from each other. Ball guide grooves 4 are provided inside the two inner frames 9 away from each other. The sliding ball 13 is rollingly arranged inside the ball guide grooves 4. The sliding ball 13 can move freely along the ball guide grooves 4. One end of the sliding rod 12 extends into the inside of the sliding ball 13 and is slidably connected, and the other end is fixedly connected to the clamping plate 10. The spring 14 is located inside the sliding ball 13 and fixedly connects the sliding ball 13 and the sliding rod 12. The connection of the spring 14 with the sliding ball 13 and the sliding rod 12 is specifically that one end of the spring 14 is fixedly connected to the sliding rod 12, and the other end is fixedly connected to the inner wall of the sliding ball 13 corresponding to the length direction of the sliding rod 12. An inner extension groove for accommodating the sliding rod 12 is provided at the diameter position of the sliding ball 13. In the above, under the action of the spring 14, the sliding rod 12 is pulled into the inner extension groove of the sliding ball 13. A plug is fixedly connected to the end of the clamping plate 10 away from the sliding rod 12. Multiple clamping grooves for clamping the traction line of the thyroid hook needle are included on the plug. When the plug is used, the end of the clamping plate 10 connected to the corresponding sliding rod 12 is pulled into the ball guide groove 4;

[0028] A side guide cavity 5 is provided inside the side where the two support frames 1 are away from each other, and a U-shaped flexible slide bar 15 is provided inside the side guide cavity 5. The flexible slide bar 15 is composed of an outer sleeve and an inner steel wire. The diameter of the inner steel wire is 0.2 mm and is arranged in a square array with equal intervals. The outer sleeve is wrapped around the outer side of the inner steel wire. A push block 6 is fixedly connected to the outer side surface of the flexible slide bar 15 away from the fixed plate 8. The push block 6 extends to the outside of the side guide cavity 5 and the two are slidably connected. Through the structural design of the flexible slide bar 15, it is convenient to push the flexible slide bar 15 from the push block 6 to move in the side guide cavity 5. The outer side of the push block 6 facing the outer arc surface of the support frame 1 is provided with an anti-slip sleeve to increase the resistance of the push block 6 to the movement of the push block 6. The side guide cavity 5 is correspondingly connected to the movable cavity, and a shift block 20 and a swing seat 22 are rotatably connected in the movable cavity. The shift block 20 contacts the arc surface of the swing seat 22, and the upper surface of the swing seat 22 The lower end of the roller 21 is fixedly connected to the roller 21, and the connecting plate 18 extends out of the movable cavity and is fixedly connected to the end plate 3 at one end outside the movable cavity. The end plate 3 is provided with a side groove on the side away from the fixed plate 8, and the part of the swing seat 22 on the outer side of the flexible slide bar 15 is in close contact with the flexible slide bar 15, and the flexible slide bar 15 is in close contact with the roller 21, so that the flexible slide bar 15 can drive the roller 21 to rotate. Vertically distributed straight teeth can be provided on the outer side of the roller 21 and the inner side of the flexible slide bar 15 to improve the transmission efficiency of the flexible slide bar 15 and the roller 21. The above-mentioned middle side guide cavity 5 contacts the flexible slide bar 15 on the side surface of the upper part of the flexible slide bar 15. When the axis of the roller 21 is in a vertical state, the bottom surface of the flexible slide bar 15 supported by the swing seat 22 is flush with the bottom surface of the side guide cavity 5.

[0029] One end of the swing seat 22 away from the connecting plate 18 is fixedly connected with a flexible plate 19, and the flexible plate 19 is made of medical rubber material. The other end of the flexible plate 19 is fixed to the end face of the active cavity close to the side guide cavity 5, and the end face of the flexible plate 19 close to the side guide cavity 5 is 0.2-1.5mm lower than the lower bottom surface of the side guide cavity 5. The above-mentioned flexible plate 19 supports the flexible slide 15 extending from the side guide cavity 5. The design of the flexible plate 19 being 0.2-1.5mm lower than the lower bottom surface of the side guide cavity 5 allows the swing of the swing seat 22 to drive the deformation of the flexible plate 19 so that the bending arc of the flexible plate 19 at the other end of the flexible slide 15 is not too large after one end of the swing seat 22 connected to the connecting plate 18 is upwardly tilted, thereby reducing the dragging of the flexible slide 15, that is, the flexible slide 15 is warped at the above-mentioned height difference, thereby reducing the contact area of ​​the flexible slide 15 at the warping location.

[0030] The lower part of one side of the pendulum base 22 facing the connecting plate 18 is an arc surface. The dial block 20 includes a dial bar that mates with the arc surface of the pendulum base 22 and an adjustment knob fixedly connected to the dial bar. One end of the adjustment knob is located outside the support frame 1 and is threadedly connected to the side wall of the support frame 1 on one side of the movable cavity. By rotating the adjustment knob, the pendulum base 22 can be driven to tilt upward at the end connected to the connecting plate 18, and then the end plate 3 connected to the connecting plate 18 can be tilted, realizing the angle adjustment between the end plate 3 and the support frame 1 in the plane perpendicular to the axis of the adjustment knob. In the above, by pushing and pulling the push block 6, the flexible slide bar 15 is driven to rotate, driving the roller 21 to rotate. Then, the roller 21 drives the connecting plate 18 to swing the end plate 3, thereby changing the included angle between the two end plates 3. The dial block 20 and the end plate 3 can cooperate with each other.

[0031] The pendulum base 22 is provided with a placement groove upward. The connection part between the flexible slide bar 15 and the roller 21 is located in the placement groove, and a pressing plate located above the flexible slide bar 15 is fixedly connected to one side of the placement groove facing the side guide cavity 5. In the above, the pressing plate limits the flexible slide bar 15 in the upward direction.

[0032] Embodiment 2:

[0033] The difference between this embodiment and Embodiment 1 is that: an inner opening is provided on one side of the end plate 3 away from the side groove, and a cylindrical support rod 2 is clamped inside the inner opening. The height of the support rod 2 extending upward from the end plate 3 is the same as the thickness of the end plate 3. The pulling line of the thyroid hook needle is supported by the above support rod 2, increasing the resistance of the pulling line of the thyroid hook needle to be pulled after use and being stuck in the side groove, preventing the pulling line from being stuck in the side groove and then displaced.

[0034] Embodiment 3:

[0035] The difference between this embodiment and Embodiment 2 is that: a bayonet 11 is provided on the side wall of the inner frame 9 above the sliding ball 13. The width of the bayonet 11 is the same as the width of the part of the clamping plate 10 connecting the sliding rod 12. When the clamping plate 10 is not clamped at the bayonet 11, one end of the clamping plate 10 connecting the sliding rod 12 is located in the ball guide groove 4. When the clamping plate 10 is clamped at the bayonet 11, the sliding rod 12 is pulled by hand, so that the spring 14 is stretched. Then, the sliding ball 13 is dragged through the sliding rod 12 from the clamping plate 10 to move in the ball guide groove 4, so that the part of the clamping plate 10 connecting the sliding rod 12 and not provided with the insert block is clamped into the clamping plate 10. At this time, the lower part of the clamping plate 10 is clamped at the side surface of the inner frame 9 below the ball guide groove 4, so that the clamping plate 10 can bear the rotational force in the vertical plane where it is located, avoiding the rotation of the clamping plate 10 caused by the movement of the pulling line of the thyroid hook needle in the insert block card slot, and then generating unnecessary pulling displacement of the pulling line.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laparoscopic thyroid skin retraction device, comprising two arc-shaped support frames (1), the two support frames (1) are symmetrically arranged, and are fixedly connected with a fixing plate (8) on the side close to each other, and the fixing plates (8) corresponding to the two support frames (1) are adjustably connected, characterized in that: The ends of the two support frames (1) away from the fixed plate (8) are both provided with a movable cavity, and the upper side surfaces of the sides of the two support frames (1) close to each other include an inner frame (9), and the sides of the two inner frames (9) away from each other are ball-slidably connected with a slot assembly; A side guide cavity (5) is arranged inside the side of the two support frames (1) away from each other, a U-shaped flexible slide bar (15) is arranged inside the side guide cavity (5), a push block (6) is fixedly connected to the outer side surface of the flexible slide bar (15) away from the fixed plate (8), the push block (6) extends to the outside of the side guide cavity (5) and the two are slidably connected, the side guide cavity (5) is correspondingly connected to the movable cavity, and the movable cavity is rotatably connected with a shift block (20) and a swing block (21). The swing seat (22) is provided with a shifting block (20) in contact with the arc surface of the swing seat (22); the upper part of the swing seat (22) is rotatably connected to a roller (21); the flexible sliding strip (15) crosses the outer side of the roller (21); the lower end of the roller (21) is fixedly connected to a connecting plate (18); the connecting plate (18) extends out of the active cavity and is fixedly connected to an end plate (3) at one end outside the active cavity; a side groove is provided on a side of the end plate (3) away from the fixed plate (8).

2. A laparoscopic thyroid skin pulling device according to claim 1, characterized in that: The card slot assembly is composed of a card plate (10), a slide rod (12), a slide ball (13) and a spring (14); the slide ball (13) is slidably connected to the inside of the two inner frames (9) on the side away from each other; one end of the slide rod (12) extends into the inside of the slide ball (13) and is slidably connected, and the other end is fixedly connected to the card plate (10); the spring (14) is located in the slide ball (13) and is fixedly connected to the slide ball (13) and the slide rod (12).

3. A laparoscopic thyroid skin pulling device according to claim 2, characterized in that: An inner opening is provided on a side of the end plate (3) away from the side groove, and a cylindrical support rod (2) is clamped on the inner side of the inner opening. The height of the support rod (2) extending upward from the end plate (3) is consistent with the thickness of the end plate (3).

4. A laparoscopic thyroid skin pulling device according to claim 2 or 3, characterized in that: One end of the swing seat (22) away from the connecting plate (18) is fixedly connected to a flexible plate (19), and the other end of the flexible plate (19) is fixed to the end surface of the movable cavity close to the side guide cavity (5), and the end surface of the flexible plate (19) close to the side guide cavity (5) is 0.2-1.5 mm lower than the bottom surface of the side guide cavity (5).

5. The laparoscopic thyroid skin pulling device according to claim 4, characterized in that: The flexible sliding strip (15) is composed of an outer sleeve and an inner steel wire, the inner steel wire has a diameter of 0.2 mm and is arranged in a square array at equal intervals, and the outer sleeve is wrapped around the outer side of the inner steel wire.

6. The laparoscopic thyroid skin pulling device according to claim 5, characterized in that: The push block (6) is provided with an anti-slip sleeve on the outer side of the arc surface of the support frame (1), and the two fixing plates (8) are provided with a receiving groove on the side facing each other. A damping block is provided inside the two fixing plates (8), and a screw rod (7) passes through the inside of the damping block. The screw rod (7) passes through the two fixing plates (8) and is threadedly connected to a fixing plate (8) on the rear side of the passing direction.

7. A laparoscopic thyroid skin pulling device according to claim 6, characterized in that: The swing seat (22) is provided with a placement groove upwardly, the connection between the flexible slide bar (15) and the roller (21) is located in the placement groove, and a pressure plate located above the flexible slide bar (15) is fixedly connected to the side of the placement groove facing the side guide cavity (5).

8. The laparoscopic thyroid skin pulling device according to claim 7, characterized in that: The lower part of the side of the pendulum seat (22) facing the connecting plate (18) is an arc surface, and the shift block (20) includes a shift bar that matches the arc surface of the pendulum seat (22) and an adjustment button fixedly connected to the shift bar, one end of the adjustment button is located on the outside of the support frame (1) and is threadedly connected to the side wall of the support frame (1) on one side of the active cavity.

9. The laparoscopic thyroid skin pulling device according to claim 8, characterized in that: A bayonet (11) is provided on the side wall of the inner frame (9) located above the sliding ball (13), and the width of the bayonet (11) is consistent with the width of the portion of the clamping plate (10) connected to the sliding rod (12).

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