Annular traction device for perineal plastic surgery

Abstract

The invention discloses an annular traction device for perineal plastic surgery, and relates to the technical field of medical instruments, the annular traction device comprises a bottom ring, the outer side of the bottom ring is fixedly connected with a fixing cover, the left side and the right side of the fixing cover are both fixedly connected with bandages, the upper side of the bottom ring is provided with a traction unit, the traction unit comprises a fixing ring, and the fixing ring is fixedly connected with the fixing cover. The fixing ring is fixedly connected to the upper side of the bottom ring, a guide block is slidably connected to the outer side of the fixing ring, a position adjusting ring is fixedly connected to the upper side of the guide block, and an opening assembly is arranged on the inner side of the position adjusting ring. According to the annular traction device for the perineal plastic surgery, through cooperation of a bottom ring, a position adjusting ring, a gear ring, a gear, a branch plate, expanding blocks, a lifting ring and an electric push rod, the expanding blocks on the two sides can rapidly expand the perineum conveniently; meanwhile, by means of a stabilizing plate, stabilizing blocks, a first control plate, a lifting rod and a second control plate, the stabilizing blocks on the two sides are unfolded and make contact with the perineum in the perineum opening process, and the stability during opening is further improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a ring-shaped traction device for perineal plastic surgery. Background Technology

[0002] Perineal plastic surgery is a procedure that repairs or enhances the shape and function of the female vulva and vaginal opening area. It is mainly divided into two categories: functional repair and aesthetic plastic surgery. The vaginal area has a complex structure, a narrow space, and natural folds. Using a traction device can push aside surrounding tissues to clearly expose the target area (such as the posterior vaginal wall), facilitating precise manipulation by the surgeon.

[0003] A search revealed a Chinese patent application with application number "CN202510185405.5", which specifically describes a ring-shaped traction device for perineal plastic surgery. The device includes a traction ring with an internal toothed ring fixed to its surface. At least two sets of power drive mechanisms are provided on the traction ring, engaging with the internal toothed ring. Each set of power drive mechanisms is equipped with a spreading mechanism for spreading the perineal plastic surgery area. A strap support mechanism is also provided on the traction ring to secure it to the patient's groin.

[0004] In the aforementioned patent, when traction is applied to the patient's perineum, the perineum is opened by controlling the dilator. During this process, staff need to press the airbags to drive the dilator plate to rotate. Due to the presence of a large amount of mucus on the inner wall of the perineum, this characteristic makes the single-point dilator plate prone to slipping. In addition, when opening the perineum, medical staff need to press both airbags simultaneously, which is cumbersome and increases the surgical burden on medical staff. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a ring-shaped traction device for perineal plastic surgery, which solves the problem of cumbersome operation when opening the perineum.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A ring-shaped traction device for perineal plastic surgery includes a base ring, a fixing cover fixedly connected to the outer side of the base ring, straps fixedly connected to both sides of the fixing cover, a traction unit provided on the upper side of the base ring, the traction unit including a fixing ring fixedly connected to the upper side of the base ring, a guide block slidably connected to the outer side of the fixing ring, an adjusting ring fixedly connected to the upper side of the guide block, and a spreading component provided on the inner side of the adjusting ring, the spreading component being used to stabilize and quickly spread the perineum.

[0008] Preferably, the spreading assembly includes two branch plates, both of which are fixedly connected to the inner side of the adjusting ring. Each branch plate has a sliding groove on both its front and rear sides. A slider is slidably connected to the inner side of each groove. A side plate is fixedly connected to the outer side of each slider. A fixing rod is fixedly connected to the lower side of each side plate. A fixing block is fixedly connected to the lower end of the fixing rod. A connecting rod is fixedly connected to the lower side of the fixing block. An installation block is fixedly connected to the lower end of the connecting rod. An expansion block is fixedly connected to the outer side of the installation block. A bottom block is fixedly connected to the lower side of the slider. A rotating block I is fixedly connected to the lower side of the bottom block. An inclined plate I is rotatably connected to the outer side of the rotating block I. A rotating block II is rotatably connected to the outer side of the inclined plate I. A lifting block is fixedly connected to the outer side of the rotating block II. A lifting ring is fixedly connected to the lower side of the lifting block. A branch block is fixedly connected to the outer side of the guide block. An electric push rod is fixedly connected between the branch block and the lifting ring.

[0009] Preferably, a gear ring is fixedly connected to the outer side of the adjusting ring, a rotating shaft is rotatably connected to the upper side of the bottom ring, a gear that meshes with the gear ring is fixedly connected to the outer side of the rotating shaft, and a motor that drives the rotating shaft to rotate is fixedly connected to the upper side of the fixing cover.

[0010] Preferably, side blocks are fixedly connected to both the front and rear sides of the expansion block, and stabilizing plates are rotatably connected to the outer sides of the side blocks on both the front and rear sides. A rectangular hole is opened on the outer side of the stabilizing plate, and a stabilizing block is rotatably connected to the inner side of the rectangular hole. A spring is fixedly connected between the stabilizing block and the stabilizing plate.

[0011] Preferably, a rotating block three is fixedly connected to the side of the stabilizing plate near the mounting block, and a control plate one is rotatably connected to the outer side of the rotating block three. Movable slots are provided on both the front and rear sides of the mounting block, and a moving block is slidably connected to the inner side of each movable slot. A rotating block four is fixedly connected to the outer side of each moving block. The control plate one is rotatably connected to the rotating block four. A top plate is fixedly connected to the upper side of the moving block, and a top block is fixedly connected to the upper side of the top plate. An inclined plate two is rotatably connected to the outer side of the upper end of the inclined plate two. A connecting block one is rotatably connected to the outer side of the connecting block one. A lifting rod is fixedly connected to the upper side of the control block. The upper end of the lifting rod passes through the upper side of the side plate. A control plate two is rotatably connected to the outer side of the upper end of the lifting rod. A connecting block two is rotatably connected to the outer side of the control plate two. A mounting plate is fixedly connected to the outer side of the branch plate, and the mounting plate is fixedly connected to the connecting block two.

[0012] Preferably, an airbag is fixedly connected to the outer side of the expansion block, and a fixing pipe is fixedly connected to the outer side of the airbags on both the front and rear sides. A connecting pipe is fixedly connected between the two fixing pipes. An air box is fixedly connected to the upper side of the branch plate. A piston plate is provided on the inner side of the air box. A delivery hose is fixedly connected between the air box and the connecting pipe. A U-shaped plate is fixedly connected to the upper side of the slider. A control rod is fixedly connected between the U-shaped plate and the piston plate.

[0013] This invention provides a ring-shaped traction device for perineal plastic surgery. Compared with the prior art, it has the following advantages:

[0014] (1) The annular traction device of this perineal plastic surgery, through the cooperation of the bottom ring, the adjusting ring, the toothed ring, the gear, the branch plate, the expansion block, the lifting ring and the electric push rod, facilitates the expansion blocks on both sides to quickly open the perineum; at the same time, with the help of the stabilizing plate, the stabilizing block, the first control plate, the lifting rod and the second control plate, the stabilizing blocks on both sides are opened and come into contact with the perineum during the opening process, further improving the stability during opening.

[0015] (2) The annular traction device of this perineal plastic surgery, through the coordination of the expansion block, air bag, connecting tube, delivery hose and air box, the air bag expands synchronously when the expansion block comes into contact with the patient's perineal inner wall, thereby protecting the perineal inner wall and avoiding its damage. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a partial three-dimensional structural diagram of the present invention;

[0018] Figure 3 This is a three-dimensional structural diagram of the expansion component in this invention;

[0019] Figure 4 This is a partial three-dimensional structural diagram of the expansion component in this invention;

[0020] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0021] Figure 6 This is a three-dimensional structural diagram of the expansion block in this invention;

[0022] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0023] Figure 8 for Figure 6 Enlarged view of point C in the middle;

[0024] Figure 9This is a partial cross-sectional perspective view of the support component in this invention.

[0025] In the diagram: 1. Bottom ring; 2. Fixing cover; 3. Strap; 4. Motor; 5. Pulling unit; 51. Fixing ring; 52. Guide block; 53. Adjusting ring; 54. Gear ring; 55. Rotating shaft; 56. Gear; 57. Spreading assembly; 571. Branch plate; 572. Slide groove; 573. Slider; 574. Bottom block; 575. Rotating block one; 576. Inclined plate one; 577. Rotating block two; 578. Lifting block; 579. Lifting ring; 5710. Branch block; 5711. Electric push rod; 5712. Side plate; 5713. Fixing rod; 5714. Fixing block; 5715. Connecting rod; 5716. Mounting block; 5717. Expansion block; 5718. Side block; 5719. 5720. Stabilizing plate; 5721. Rectangular hole; 5722. Stabilizing block; 5723. Spring; 5724. Rotating block three; 5725. Control panel one; 5726. Moving slot; 5727. Moving block; 5728. Rotating block four; 5729. Top plate; 5730. Top block; 5731. Inclined plate two; 5732. Connecting block one; 5733. Control block; 5734. Lifting rod; 5735. Control panel two; 5736. Mounting plate; 5737. Airbag; 5738. Fixing pipe; 5739. Connecting pipe; 5740. U-shaped plate; 5741. Air box; 5742. Piston plate; 5743. Control rod; 5744. Delivery hose. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] This invention provides the following technical solutions:

[0028] Example 1

[0029] See also Figure 1 - Figure 8A ring-shaped traction device for perineal plastic surgery includes a bottom ring 1, a fixing cover 2 fixedly connected to the outer side of the bottom ring 1, and straps 3 fixedly connected to both sides of the fixing cover 2. A traction unit 5 is provided on the upper side of the bottom ring 1. The traction unit 5 includes a fixing ring 51, which is fixedly connected to the upper side of the bottom ring 1. A guide block 52 is slidably connected to the outer side of the fixing ring 51. An adjustment ring 53 is fixedly connected to the upper side of the guide block 52. A spreading component 57 is provided on the inner side of the adjusting ring 53. The spreading component 57 is used to stabilize and quickly spread the perineum. The straps 3 are provided to bind the fixing cover 2 to the patient's legs, which facilitates the limitation of the device.

[0030] The expansion assembly 57 includes two branch plates 571, both of which are fixedly connected to the inner side of the adjusting ring 53. Slide grooves 572 are provided on both the front and rear sides of each branch plate 571. A slider 573 is slidably connected to the inner side of each slide groove 572. A side plate 5712 is fixedly connected to the outer side of the slider 573. A fixing rod 5713 is fixedly connected to the lower side of the side plate 5712. A fixing block 5714 is fixedly connected to the lower end of the fixing rod 5713. A connecting rod 5715 is fixedly connected to the lower side of the fixing block 5714. An installation block 5716 is fixedly connected to the lower end of the connecting rod 5715. An expansion block 5717 is fixedly connected to the outer side of the installation block 5716. A bottom block 574 is fixedly connected to the lower side of the slider 573. A rotating block 575 is fixedly connected to the lower side of 74. An inclined plate 576 is rotatably connected to the outer side of the rotating block 575. A rotating block 577 is rotatably connected to the outer side of the inclined plate 576. A lifting block 578 is fixedly connected to the outer side of the rotating block 577. A lifting ring 579 is fixedly connected to the lower side of the lifting block 578. A branch block 5710 is fixedly connected to the outer side of the guide block 52. An electric push rod 5711 is fixedly connected between the branch block 5710 and the lifting ring 579. A toothed ring 54 is fixedly connected to the outer side of the adjusting ring 53. A rotating shaft 55 is rotatably connected to the upper side of the bottom ring 1. A gear 56 that meshes with the toothed ring 54 is fixedly connected to the outer side of the rotating shaft 55. A motor 4 that drives the rotating shaft 55 to rotate is fixedly connected to the upper side of the fixed cover 2.

[0031] Before performing surgery on the patient's perineum, the expansion block 5717 is first placed on the patient's perineum, with the bottom ring 1 positioned in front of the perineum. The motor 4 is started, driving the rotating shaft 55 to rotate. The rotating shaft 55 drives the gear 56 to rotate, which in turn drives the gear ring 54 to rotate. The gear ring 54 then drives the adjusting ring 53 to rotate, which in turn drives the branch plate 571 to rotate. This causes the branch plate 571 to rotate the expansion block 5717 on the mounting block 5716, facilitating the adjustment of the expansion block 5717. After adjustment, the electric push rod 5711 is controlled to lower the lifting ring 579, which in turn lowers the lifting block 578. The lifting block 578 then lowers the inclined plate 5711. 6. Rotation: Multiple inclined plates 576 are arranged in a circular array, causing the inclined plates 576 to move the base block 574 towards the patient's perineum. The base block 574 moves the slider 573, which in turn moves the side plate 5712. The side plate 5712 moves the fixing rod 5713, which in turn moves the fixing block 5714. The fixing block 5714 moves the connecting rod 5715, which in turn moves the mounting block 5716. The mounting block 5716 moves the expansion block 5717, causing the expansion blocks 5717 on both sides to move away from each other and closer to the inner wall of the perineum. This facilitates opening the patient's perineum for surgery, making the operation simple.

[0032] Side blocks 5718 are fixedly connected to both the front and rear sides of the expansion block 5717. A stabilizing plate 5719 is rotatably connected to the outer side of each side block 5718. A rectangular hole 5720 is formed on the outer side of the stabilizing plate 5719. A stabilizing block 5721 is rotatably connected to the inner side of the rectangular hole 5720. A spring 5722 is fixedly connected between the stabilizing block 5721 and the stabilizing plate 5719. A rotating block 5723 is fixedly connected to the side of the stabilizing plate 5719 closest to the mounting block 5716. A control plate 5724 is rotatably connected to the outer side of the rotating block 5723. Moving grooves 5725 are formed on both the front and rear sides of the mounting block 5716. A moving block 5726 is slidably connected to the inner side of the moving groove 5725. A rotating block 5727 is fixedly connected to the outer side of the moving block 5726. The control plate 5724 and the rotating block 5727 are connected to each other. 5727 is rotatably connected to the top plate 5728 fixedly connected to the upper side of the moving block 5726. The top plate 5729 is fixedly connected to the upper side of the top plate 5728. The outer side of the top block 5729 is rotatably connected to the inclined plate 5730. The outer side of the upper end of the inclined plate 5730 is rotatably connected to the connecting block 5731. The upper side of the connecting block 5731 is fixedly connected to the control block 5732. The upper side of the control block 5732 is fixedly connected to the lifting rod 5733. The upper end of the lifting rod 5733 passes through the upper side of the side plate 5712. The outer side of the upper end of the lifting rod 5733 is rotatably connected to the control plate 5734. The outer side of the control plate 5734 is rotatably connected to the connecting block 5735. The outer side of the branch plate 571 is fixedly connected to the mounting plate 5736. The mounting plate 5736 is fixedly connected to the connecting block 5735.

[0033] When the expansion block 5717 expands open at the perineum, the side plate 5712 moves. Under the action of the mounting plate 5736 and the control plate 5734, the lifting rod 5733 rises. The lifting rod 5733 drives the control block 5732 to rise. The control block 5732 drives the inclined plate 5730 to rotate. The inclined plate 5730 drives the top plate 5728 to move closer to the expansion block 5717. The top plate 5728 drives the moving block 5726 to move. The moving block 5726 drives the control plate 5724 to rotate. Control plate 5724 drives the stabilizing plate 5719 to rotate. Due to the symmetrical distribution of control plates 5724 on both sides, the stabilizing plates 5719 on both sides are unfolded. The stabilizing plates 5719 drive the stabilizing block 5721 to rotate. At the same time, the stabilizing block 5721 moves closer to the perineal wall, so that the stabilizing block 5721 and the expanding block 5717 cooperate to open the perineal wall, increasing the stability of the opening and preventing the expanding block 5717 from slipping and affecting the operation. The spring 5722 is set with an inclined structure to facilitate the fit of the stabilizing block 5721 to the perineal wall.

[0034] Example 2

[0035] Based on Example 1, such as Figure 9 As shown, an airbag 5737 is fixedly connected to the outer side of the expansion block 5717, and a fixing pipe 5738 is fixedly connected to the outer side of both the front and rear airbags 5737. A connecting pipe 5739 is fixedly connected between the two fixing pipes 5738. An air box 5741 is fixedly connected to the upper side of the branch plate 571. A piston plate 5742 is provided on the inner side of the air box 5741. A delivery hose 5744 is fixedly connected between the air box 5741 and the connecting pipe 5739. A U-shaped plate 5740 is fixedly connected to the upper side of the slider 573. A control rod 5743 is fixedly connected between the U-shaped plate 5740 and the piston plate 5742.

[0036] When the expansion block 5717 opens the perineum, the slider 573 moves the U-shaped plate 5740, which in turn moves the control rod 5743. The control rod 5743 then moves the piston plate 5742, which pushes the gas out of the air box 5741. The gas is then introduced into the airbag 5737 through the delivery hose 5744, connecting pipe 5739, and fixing pipe 5738, causing the airbag 5737 to inflate. This facilitates protection when the expansion block 5717 contacts the inner wall of the perineum, preventing damage to the patient's perineum.

[0037] Working principle: In use, medical personnel first tie the strap 3 around the patient's leg, positioning the expansion block 5717 in front of the patient's perineum. The motor 4 is then started, driving the gear 56 on the rotating shaft 55 to rotate. The gear 56 drives the gear ring 54 to rotate, which in turn drives the adjusting ring 53 to rotate. The adjusting ring 53 then drives the branch plate 571 to rotate, which in turn adjusts the position of the expansion block 5717. Next, the electric push rod 5711 is controlled to lower the lifting ring 579, which in turn lowers the lifting block 578. Under the action of the inclined plate 576, the bottom blocks 574 on both sides move towards the inner wall of the perineum. The bottom blocks 574 move the slider 573, which in turn moves the side plate 5712. The system is then fixed... Under the action of rod 5713, fixing block 5714, connecting rod 5715 and mounting block 5716, the expansion blocks 5717 on both sides move closer to the inner wall of the perineum, making it easier to quickly open the perineum. The operation is simple. At the same time, under the action of mounting plate 5736 and control plate 2 5734, the lifting rod 5733 rises. The lifting rod 5733 drives the control block 5732 to rise. The control block 5732 drives the inclined plate 2 5730 to rotate. Under the action of top plate 5728, moving block 5726 and control plate 1 5724, the stabilizing plate 5719 rotates. The stabilizing plate 5719 drives the stabilizing block 5721 to rotate, making it easier for the stabilizing blocks 5721 on both sides to unfold and contact the inner wall of the perineum, making the expansion blocks 5717 more stable when the perineum is opened.

[0038] When the expansion block 5717 contacts the inner wall, the slider 573 drives the U-shaped plate 5740 to move, and the U-shaped plate 5740 drives the piston plate 5742 on the control rod 5743 to move. Under the action of the delivery hose 5744, the connecting pipe 5739 and the fixing pipe 5738, the airbag 5737 expands, which facilitates the protection of the patient's perineal inner wall.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ring-shaped traction device for perineal plastic surgery, comprising a bottom ring (1), characterized in that: A fixing cover (2) is fixedly connected to the outer side of the bottom ring (1). Straps (3) are fixedly connected to both the left and right sides of the fixing cover (2). A traction unit (5) is provided on the upper side of the bottom ring (1). The traction unit (5) includes a fixing ring (51). The fixing ring (51) is fixedly connected to the upper side of the bottom ring (1). A guide block (52) is slidably connected to the outer side of the fixing ring (51). An adjustment ring (53) is fixedly connected to the upper side of the guide block (52). A spreading component (57) is provided on the inner side of the adjustment ring (53). The spreading component (57) is used to stabilize and quickly spread the perineum.

2. The annular traction device for perineal plastic surgery according to claim 1, characterized in that: The spreading assembly (57) includes two branch plates (571), both of which are fixedly connected to the inner side of the adjusting ring (53). Each branch plate (571) has a sliding groove (572) on both its front and rear sides. A slider (573) is slidably connected to the inner side of each sliding groove (572). A side plate (5712) is fixedly connected to the outer side of each slider (573). A fixing rod (5713) is fixedly connected to the lower side of the side plate (5712). A fixing block (5714) is fixedly connected to the lower end of the fixing rod (5713). A connecting rod (5715) is fixedly connected to the lower side of the fixing block (5714). An installation block (5716) is fixedly connected to the lower end of the connecting rod (5715). An expansion block (5717) is fixedly connected to the outer side of the mounting block (5716). A bottom block (574) is fixedly connected to the lower side of the slider (573). A rotating block (575) is fixedly connected to the lower side of the bottom block (574). An inclined plate (576) is rotatably connected to the outer side of the rotating block (575). A rotating block (577) is rotatably connected to the outer side of the inclined plate (576). A lifting block (578) is fixedly connected to the outer side of the rotating block (577). A lifting ring (579) is fixedly connected to the lower side of the lifting block (578). A branch block (5710) is fixedly connected to the outer side of the guide block (52). An electric push rod (5711) is fixedly connected between the branch block (5710) and the lifting ring (579).

3. The annular traction device for perineal plastic surgery according to claim 1, characterized in that: A gear ring (54) is fixedly connected to the outer side of the adjusting ring (53), a rotating shaft (55) is rotatably connected to the upper side of the bottom ring (1), a gear (56) that meshes with the gear ring (54) is fixedly connected to the outer side of the rotating shaft (55), and a motor (4) that drives the rotating shaft (55) to rotate is fixedly connected to the upper side of the fixed cover (2).

4. The annular traction device for perineal plastic surgery according to claim 2, characterized in that: The expansion block (5717) is fixedly connected to the front and rear sides with side blocks (5718). The outer sides of the side blocks (5718) on both the front and rear sides are rotatably connected to stabilizing plates (5719). The outer side of the stabilizing plate (5719) is provided with a rectangular hole (5720). The inner side of the rectangular hole (5720) is rotatably connected to a stabilizing block (5721). A spring (5722) is fixedly connected between the stabilizing block (5721) and the stabilizing plate (5719).

5. A ring-shaped traction device for perineal plastic surgery according to claim 4, characterized in that: The stabilizing plate (5719) is fixedly connected to a rotating block three (5723) on the side near the mounting block (5716). A control plate one (5724) is rotatably connected to the outer side of the rotating block three (5723). The mounting block (5716) has moving slots (5725) on both its front and rear sides. A moving block (5726) is slidably connected to the inner side of the moving slot (5725). A rotating block four (5727) is fixedly connected to the outer side of the moving block (5726). The control plate one (5724) is rotatably connected to the rotating block four (5727). A top plate (5728) is fixedly connected to the upper side of the moving block (5726). A top block (5729) is fixedly connected to the upper side of the top plate (5728). The outer side of the top block (5729) is... A second inclined plate (5730) is rotatably connected to the side. A first connecting block (5731) is rotatably connected to the outer side of the upper end of the second inclined plate (5730). A control block (5732) is fixedly connected to the upper side of the first connecting block (5731). A lifting rod (5733) is fixedly connected to the upper side of the control block (5732). The upper end of the lifting rod (5733) passes through the upper side of the side plate (5712). A second control plate (5734) is rotatably connected to the outer side of the upper end of the lifting rod (5733). A second connecting block (5735) is rotatably connected to the outer side of the second control plate (5734). An installation plate (5736) is fixedly connected to the outer side of the branch plate (571). The installation plate (5736) is fixedly connected to the second connecting block (5735).

6. A ring-shaped traction device for perineal plastic surgery according to claim 2, characterized in that: An airbag (5737) is fixedly connected to the outer side of the expansion block (5717). A fixing tube (5738) is fixedly connected to the outer side of the airbag (5737) on both the front and rear sides. A connecting tube (5739) is fixedly connected between the two fixing tubes (5738). An air box (5741) is fixedly connected to the upper side of the branch plate (571). A piston plate (5742) is provided on the inner side of the air box (5741). A delivery hose (5744) is fixedly connected between the air box (5741) and the connecting tube (5739). A U-shaped plate (5740) is fixedly connected to the upper side of the slider (573). A control rod (5743) is fixedly connected between the U-shaped plate (5740) and the piston plate (5742).

Images