Surgical nursing tourniquet winding device and method thereof

Abstract

The invention relates to the technical field of nursing devices, in particular to a surgical nursing tourniquet winding device and a method thereof.The surgical nursing tourniquet winding device comprises an outer sleeve device, a driving device arranged on the outer side of the outer sleeve device and a placing device moving along with movement of the driving device; the outer sleeve device comprises a fixing part, rotating ring bodies arranged at the left end and the right end of the fixing part, a plurality of sets of clamping parts changing the positions of the clamping parts along with rotation of the rotating ring bodies, limiting protruding blocks arranged on the inner sides of the rotating ring bodies and second pressure springs pushing the limiting protruding blocks to move outwards through elastic force of the second pressure springs. According to the surgical nursing tourniquet winding device and the surgical nursing tourniquet winding method, a driving motor is started to drive a moving table and a placing device to move on the outer side of a fixed ring body, and a rod end pulley moves in a cam groove, so that after a tourniquet in a placing ring is pulled out, the tourniquet is wound; the tourniquet is continuously wound on the outer side of the arm of the patient by simulating manual work and adopting a cross overlock method, so that the occupation of human resources is reduced, and the tourniquet winding consistency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of nursing devices, in particular to a surgical nursing tourniquet winding device and a method thereof. Background Art

[0002] In surgical care, the application of a tourniquet is a key step in controlling bleeding and ensuring a clear surgical field of view. The tourniquet needs to be carefully checked before surgery to ensure that it functions properly. When wrapping it, the tourniquet should be tied to parts of the limbs with rich muscles, such as the upper 1 / 3 of the upper arm and the groin near the thigh root of the lower limb to avoid nerve damage. The tourniquet should be tied with an appropriate tightness to effectively stop bleeding without affecting blood circulation.

[0003] The patent with application number CN202421221301.2 discloses a tourniquet winding device, including a reeling box, a reeling mechanism, a tape outlet tube, a guide column, a tape fixing mechanism, a cutting mechanism, a tube cover and a box cover. A center column is arranged at the center of the inside of the reeling box, and the reeling mechanism is movably connected inside the center column. When in use, the two sliding blocks move toward each other, and the support plate is propped outward under the action of the connecting rod. The internal support and fixation of the tourniquet reel are achieved under the support of the two support plates. It is suitable for the fixation of tourniquet reels of various specifications, and there is no need for medical staff to hold the tourniquet reel for winding, which has better safety.

[0004] In surgical care, traditional tourniquet tying operations (such as the cross-locking method) often require the cooperation of two people: one medical staff member needs to fix the patient's arm and lift the limb, and the other needs to wrap and fix it at the proximal end. Although this method can effectively assist in venous exposure, it occupies more nursing human resources in clinical applications and is prone to delay preoperative preparations during emergency surgery or when staff are short of staff. In addition, differences in operating habits among different medical staff may lead to unstable hemostasis effects.

[0005] In view of this, we propose a surgical care tourniquet winding device and method. Summary of the invention

[0006] The object of the present invention is to provide a surgical care tourniquet winding device and method thereof to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, on the one hand, the present invention provides the following technical solutions: A surgical nursing tourniquet winding device comprises a jacket device, a driving device arranged outside the jacket device, and a placement device that moves with the movement of the driving device; The outer sleeve device includes a fixed part, a rotating ring body arranged at the left and right ends of the fixed part, a plurality of clamping parts that change their positions as the rotating ring body rotates, a limiting convex block arranged inside the rotating ring body, and a second pressure spring that pushes the limiting convex block to move outward by its own elastic force; The fixing part includes a fixing ring body, a pair of limiting ring bodies for limiting the moving range of the driving device, and an annular rack arranged outside the fixing ring body, and a cam groove is opened on the outer wall of the fixing ring body; The driving device includes a moving platform, a driving motor arranged on the top surface of the moving platform, a rotating shaft that rotates with the rotation of the output shaft of the driving motor, and shaft end gears arranged at both ends of the rotating shaft. After the shaft end gears rotate, they come into conflict with the annular rack, thereby driving the moving platform and the placement device to perform circular motion outside the fixed part. The placement device includes a moving slider that moves back and forth left and right with the circular motion of the moving platform, a rod end pulley arranged below the moving slider, and a pair of placement rings for limiting the tourniquet placement range. When the rod end pulley moves with the moving platform, the contact position between the rod end pulley and the cam groove changes continuously, thereby driving the moving platform to move back and forth, thereby simulating artificial periodic changes in the binding position of the tourniquet on the patient's arm.

[0008] In the technical solution of the present invention, the limiting ring body and the fixed ring body are integrally formed, a number of regularly distributed limiting sliding grooves are opened on the inner ring wall of the limiting ring body, a number of regularly distributed limiting sliding holes are opened on the outer ring wall of the limiting ring body, and the annular rack is welded and fixed to the outer ring wall of the fixed ring body.

[0009] In the technical solution of the present invention, the rotating ring body is rotatably connected to the outer side of the limiting ring body, and an arc groove running through the left and right is opened on the outer side wall of the rotating ring body. The rotating ring body is provided with ring wall through holes on the outer side ring wall, the number of which is the same as that of the limiting sliding holes, the positions of which are one-to-one corresponding to those of the limiting sliding holes, and the sizes of which are matched.

[0010] In the technical solution of the present invention, the clamping part includes a limit slider, an arc-shaped clamping block arranged on the inner side of the limit slider, a limit telescopic rod with two ends respectively clamped between the limit slider and the arc-shaped clamping block, and a first pressure spring sleeved on the outer side of the limit telescopic rod.

[0011] In the technical solution of the present invention, an outer convex rod with an end extending to the outside of the arc groove is integrally formed on the outer wall of the limit slider. The elastic force provided by the first pressure spring pushes the arc clamping block to move inward. When the rotating ring body is turned to drive it to rotate, the contact position between the outer convex rod and the arc groove is changed, thereby driving the limit slider to move inward. After the arc clamping block contacts the patient's arm, the first pressure spring contracts to generate elastic force, thereby fixing the fixing part on the outside of the patient's arm.

[0012] In the technical solution of the present invention, the limiting protrusion is slidably connected to the inside of the limiting sliding hole, one end of the first pressure spring is adhered to the outer wall of the limiting protrusion, and the other end is adhered to the inner hole wall of the limiting sliding hole.

[0013] In the technical solution of the present invention, the moving platform is slidably connected between two limiting ring bodies and convex rods for limiting its movement are integrally formed at the corners of the outer wall of the moving platform. A table top groove that passes through the top and bottom is opened on the top surface of the moving platform, and a placement groove is opened on one side of the table top groove on the top surface of the moving platform. The top surface of the moving platform is provided with table body through grooves on both sides of the left and right sides of the placement groove. When in use, the top groove of the placement groove is fixedly connected to the placement plate by screws.

[0014] In the technical solution of the present invention, the outer side of the driving motor output shaft is fixedly connected to a worm gear via a bayonet, the left and right ends of the rotating shaft are respectively rotatably connected to the groove walls of the two table through grooves, and the outer side wall of the rotating shaft is fixedly connected to a worm meshing with the worm gear via a bayonet near the center position, and the shaft end gear is fixedly connected to the end position of the rotating shaft via a bayonet and meshes with the annular rack.

[0015] In the technical solution of the present invention, the movable slider is slidably connected to the inside of the groove on the table top, a rotating rod is rotatably connected to the bottom surface of the movable slider, the rod end pulley is clamped and fixed at the end position of the rotating rod, an extending rod is clamped and fixed on the outer wall of the movable slider, and the placement ring away from the movable slider can be disassembled from the extending rod to replace the tourniquet.

[0016] On the other hand, the present invention also provides a surgical care tourniquet winding method, using the above-mentioned surgical care tourniquet winding device, comprising the following steps: S1. First, the operator lifts the patient's arm and puts the fixing part of the outer cover device on the outside of the patient's arm. In the subsequent operation, the operator always holds the patient's wrist and keeps the angle between the patient's arm and the bed; S2, then, a pair of rotating ring bodies are moved to change the contact position between the outer convex rod in the clamping part and the arc-shaped groove wall, thereby driving the limit slider to move inward; S3, after the arc-shaped clamping block contacts the arm, the limiting telescopic rod and the first pressure spring contract, and the elastic force generated by the contraction of the first pressure spring ensures the stability of the fixing part on the outside of the patient's arm; S4. Subsequently, the operator guides the end of the tourniquet to the patient's arm, presses the end of the tourniquet against the patient's arm through a thin rod, and then starts the drive motor, which drives the worm gear to rotate through the output shaft; S5, after the worm wheel rotates, it collides with the worm, and drives the rotating shaft to rotate, and then drives the shaft end gear to rotate accordingly, so that the shaft end gear collides with the annular rack, and the moving platform makes a circular motion outside the fixed ring body; S6. When the moving platform makes a circular motion outside the fixed ring body, the contact position between the rod end pulley and the cam groove wall is constantly changing, thereby driving the moving slider to move back and forth left and right, thereby continuously pulling out the tourniquet placed in the ring, and allowing the tourniquet to be wrapped around the patient's arm.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The surgical care tourniquet winding device and method thereof, by starting a driving motor, drives the moving platform and the placement device to move outside the fixed ring body, and by the movement of the rod end pulley in the cam groove, after the tourniquet in the placement ring is pulled out, the tourniquet is continuously wound around the outside of the patient's arm by simulating manual use of a cross-locking method, thereby reducing the occupation of human resources and the consistency of winding the tourniquet.

[0018] 2. The surgical care tourniquet winding device and method can drive the clamping part to change its position by turning the rotating ring body, so that the outer cover device as a whole can be quickly fixed on the outside of the patient's arm, thereby shortening the overall tourniquet winding time and avoiding delays in preoperative preparations. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic structural diagram of the outer jacket device in the present invention.

[0021] Figure 3 It is a partial structural schematic diagram of the outer jacket device in the present invention.

[0022] Figure 4 For the present invention Figure 3 Enlarged schematic diagram of part A.

[0023] Figure 5 It is a schematic structural diagram of the rotating ring body in the present invention.

[0024] Figure 6 It is a schematic structural diagram of the clamping part in the present invention.

[0025] Figure 7 It is a schematic diagram of the structure of the driving device in the present invention.

[0026] Figure 8 It is a structural schematic diagram of the mobile station in the present invention.

[0027] Fig. 9It is a partial structural schematic diagram of the driving device in the present invention.

[0028] Fig.10 It is a schematic diagram of the structure of the placement device in the present invention.

[0029] Description of reference numerals: 100, outer sleeve device; 110, fixing part; 111, fixing ring body; 1110, cam groove; 112, limiting ring body; 1120, limiting slide groove; 1121, limiting slide hole; 113, annular rack; 120, rotating ring body; 121, arc groove; 122, ring wall through hole; 130, clamping part; 131, limiting slide block; 1310, outer convex rod; 132, arc clamping block; 133, limiting telescopic rod; 134, first pressure spring; 140, limiting convex block; 150, second pressure spring; 200, driving device; 210, moving table; 211, table top slot; 212, placement slot; 213, table body slot; 220, driving motor; 230, rotating shaft; 240, shaft end gear; 250, worm wheel; 260, worm; 300, placement device; 310, moving slider; 320, rotating rod; 330, rod end pulley; 340, extension rod; 350, placement ring. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 10 As shown, this embodiment provides a technical solution: A surgical nursing tourniquet winding device comprises a jacket device 100, a driving device 200 arranged outside the jacket device 100, and a placement device 300 which is displaced as the driving device 200 moves.

[0032] In this embodiment, Figure 2-Figure 4 As shown, the outer sleeve device 100 includes a fixed portion 110, a rotating ring body 120 arranged at the left and right ends of the fixed portion 110, a plurality of clamping portions 130 that change their positions as the rotating ring body 120 rotates, a limiting protrusion 140 arranged on the inner side of the rotating ring body 120, and a second pressure spring 150 that pushes the limiting protrusion 140 outward by its own elastic force.

[0033] Specifically, the fixing portion 110 includes a fixing ring body 111 , a pair of limiting ring bodies 112 for limiting the movement range of the driving device 200 , and an annular rack 113 arranged outside the fixing ring body 111 . A cam groove 1110 is opened on the outer wall of the fixing ring body 111 .

[0034] Furthermore, the limiting ring body 112 and the fixed ring body 111 are integrally formed, a plurality of regularly distributed limiting grooves 1120 are opened on the inner ring wall of the limiting ring body 112, a plurality of regularly distributed limiting sliding holes 1121 are opened on the outer ring wall of the limiting ring body 112, and the annular rack 113 is welded and fixed to the outer ring wall of the fixed ring body 111.

[0035] Furthermore, the fixed ring body 111 is used to ensure the strength of the overall structure of the fixed part 110, the limiting ring body 112 is used to provide a rotation range for the rotating ring body 120, the limiting slide groove 1120 is used to provide a moving range for the clamping part 130, the limiting slide hole 1121 is used to provide a placement range for the limiting protrusion 140 and the second pressure spring 150, and the annular rack 113 is used to cooperate with the internal structure of the driving device 200 to allow the driving device 200 to move outside the fixed ring body 111.

[0036] In this embodiment, Figure 5-Figure 6 As shown, the rotating ring body 120 is rotatably connected to the outer side of the limiting ring body 112, and an arc groove 121 is opened on the outer wall of the rotating ring body 120 to pass through the left and right. The rotating ring body 120 is provided with ring wall through holes 122 on the outer ring wall, which are the same in number, correspond in position and have the same size as the limiting sliding holes 1121.

[0037] Specifically, the clamping portion 130 includes a limiting slider 131, an arc-shaped clamping block 132 arranged on the inner side of the limiting slider 131, a limiting telescopic rod 133 with two ends respectively clamped between the limiting slider 131 and the arc-shaped clamping block 132, and a first pressure spring 134 sleeved on the outer side of the limiting telescopic rod 133.

[0038] Furthermore, an outer wall of the limiting slider 131 is integrally formed with an outer convex rod 1310 whose end extends to the outside of the arc groove 121. The elastic force provided by the first pressure spring 134 pushes the arc clamping block 132 to move inward. When the rotating ring body 120 is moved to drive it to rotate, the contact position between the outer convex rod 1310 and the arc groove 121 is changed, thereby driving the limiting slider 131 to move inward. After the arc clamping block 132 contacts the patient's arm, the first pressure spring 134 contracts to generate elastic force, thereby fixing the fixing part 110 on the outside of the patient's arm.

[0039] Furthermore, by moving a pair of rotating ring bodies 120, the contact position between the outer protrusion 1310 in the clamping part 130 and the wall of the arc-shaped groove 121 is changed, thereby driving the limiting slider 131 to move inward. After the arc-shaped clamping block 132 contacts the arm, the limiting telescopic rod 133 and the first pressure spring 134 contract. The elastic force generated by the contraction of the first pressure spring 134 ensures the stability of the fixing part 110 on the outside of the patient's arm, and the limiting telescopic rod 133 limits the contraction range of the first pressure spring 134.

[0040] In this embodiment, Figure 4 As shown, the limiting protrusion 140 is slidably connected to the inside of the limiting sliding hole 1121 , one end of the first pressure spring 134 is adhered to the outer wall of the limiting protrusion 140 , and the other end is adhered to the inner wall of the limiting sliding hole 1121 .

[0041] Furthermore, when the rotating ring body 120 rotates, the limiting protrusion 140 contacts the rotating ring body 120 and shrinks into the inner side of the limiting sliding hole 1121. During the continuous rotation of the rotating ring body 120, under the elastic force of the second pressure spring 150, the end extends to the outer side of another annular wall through hole 122.

[0042] In this embodiment, Figure 7-Figure 9 As shown, the driving device 200 includes a moving platform 210, a driving motor 220 arranged on the top surface of the moving platform 210, a rotating shaft 230 that rotates as the output shaft of the driving motor 220 rotates, and shaft end gears 240 arranged on both side ends of the rotating shaft 230. After the shaft end gears 240 rotate, they come into conflict with the annular rack 113, thereby driving the moving platform 210 and the placement device 300 to perform circular motion outside the fixed portion 110.

[0043] Specifically, the moving platform 210 is slidably connected between the two limiting ring bodies 112, and the outer wall corners of the moving platform 210 are integrally formed with convex rods for limiting its movement, a table top groove 211 that runs through the top and bottom is opened on the top surface of the moving platform 210, a placement groove 212 is opened on the top surface of the moving platform 210 on one side of the table top groove 211, and a table body through groove 213 is opened on the top surface of the moving platform 210 on the left and right sides of the placement groove 212. When in use, the top groove of the placement groove 212 is fixedly connected to the placement plate by screws.

[0044] Furthermore, the outer side of the output shaft of the driving motor 220 is fixedly connected to a worm gear 250 via a bayonet pin, the left and right ends of the rotating shaft 230 are respectively rotatably connected to the groove walls of the two table through grooves 213, and the outer side wall of the rotating shaft 230 is fixedly connected to a worm 260 meshing with the worm gear 250 via a bayonet pin near the center position, and the shaft end gear 240 is fixedly connected to the end position of the rotating shaft 230 via a bayonet pin and meshes with the annular rack 113.

[0045] Furthermore, after the driving motor 220 is started, the worm gear 250 is driven to rotate through the output shaft, and after colliding with the worm 260, the rotating shaft 230 is driven to rotate, and then the shaft end gear 240 is driven to rotate accordingly, so that the shaft end gear 240 is colliding with the annular rack 113, and the movable platform 210 moves outside the fixed ring body 111.

[0046] In this embodiment, Fig.10 As shown, the placement device 300 includes a movable slider 310 that moves back and forth with the circular motion of the movable platform 210, a rod end pulley 330 arranged below the movable slider 310, and a pair of placement rings 350 for limiting the tourniquet placement interval. When the rod end pulley 330 moves with the movable platform 210, the contact position between itself and the cam groove 1110 is continuously changed, thereby driving the movable platform 210 to move back and forth, thereby simulating artificial periodic changes in the binding position of the tourniquet on the patient's arm.

[0047] Specifically, the movable slider 310 is slidably connected to the inside of the table slot 211, and a rotating rod 320 is rotatably connected to the bottom surface of the movable slider 310. The rod end pulley 330 is clamped and fixed at the end position of the rotating rod 320. An extension rod 340 is clamped and fixed on the outer wall of the movable slider 310. The placement ring 350 away from the movable slider 310 can be disassembled from the extension rod 340 to replace the tourniquet.

[0048] Furthermore, when the movable platform 210 makes a circular motion on the outside of the fixed ring body 111, the contact position between the rod end pulley 330 and the groove wall of the cam groove 1110 is constantly changing, thereby driving the movable slider 310 to move back and forth left and right, thereby continuously pulling out the tourniquet in the placement ring 350, and allowing the tourniquet to be wrapped around the patient's arm. A round rod is provided inside the placement ring 350 to provide a rotation range for the tourniquet, and the outer opening of the placement ring 350 is clamped with an outer cover that can be quickly disassembled and through which the interior of the placement ring 350 can be observed.

[0049] The present invention also provides a surgical care tourniquet winding method, using the above-mentioned surgical care tourniquet winding device, comprising the following steps: S1. First, the operator lifts the patient's arm and puts the fixing part 110 in the outer cover device 100 on the outside of the patient's arm. In the subsequent operation, the operator always holds the patient's wrist and keeps the angle between the patient's arm and the bed; S2, then, the pair of rotating ring bodies 120 are moved to change the contact position between the outer protruding rod 1310 in the clamping portion 130 and the wall of the arc-shaped groove 121, thereby driving the limiting slider 131 to move inward; S3, after the arc-shaped clamping block 132 contacts the arm, the limiting telescopic rod 133 and the first pressure spring 134 contract, and the elastic force generated by the contraction of the first pressure spring 134 ensures the stability of the fixing part 110 on the outside of the patient's arm; S4. Subsequently, the operator guides the end of the tourniquet to the patient's arm, presses the end of the tourniquet against the patient's arm through the thin rod, and then starts the drive motor 220, which drives the worm gear 250 to rotate through the output shaft; S5, after the worm wheel 250 rotates, it contacts with the worm 260, and drives the rotating shaft 230 to rotate, and then drives the shaft end gear 240 to rotate accordingly, so that the shaft end gear 240 contacts with the annular rack 113, and the moving platform 210 moves outside the fixed ring body 111; S6. When the movable platform 210 moves while the fixed ring body 111 moves, the contact position between the rod end pulley 330 and the groove wall of the cam groove 1110 is constantly changing, thereby driving the movable slider 310 to move back and forth left and right, thereby continuously pulling out the tourniquet in the placement ring 350, and allowing the tourniquet to be wrapped around the patient's arm.

[0050] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the specification and its equivalents.

Claims

1. A surgical nursing tourniquet winding device, characterized in that: It comprises a coat device (100), a driving device (200) arranged outside the coat device (100), and a placement device (300) that moves as the driving device (200) moves; The outer sleeve device (100) comprises a fixing portion (110), a rotating ring body (120) arranged at the left and right ends of the fixing portion (110), a plurality of clamping portions (130) that change their positions as the rotating ring body (120) rotates, a limiting protrusion (140) arranged on the inner side of the rotating ring body (120), and a second pressure spring (150) that pushes the limiting protrusion (140) outward by its own elastic force; The fixing portion (110) comprises a fixing ring body (111), a pair of limiting ring bodies (112) for limiting the movement range of the driving device (200), and an annular rack (113) arranged outside the fixing ring body (111), and a cam groove (1110) is provided on the outer side wall of the fixing ring body (111); The driving device (200) comprises a moving platform (210), a driving motor (220) disposed on the top surface of the moving platform (210), a rotating shaft (230) that rotates as the output shaft of the driving motor (220) rotates, and shaft end gears (240) disposed on both side ends of the rotating shaft (230); after the shaft end gears (240) rotate, they come into conflict with the annular rack (113), thereby driving the moving platform (210) and the placement device (300) to perform circular motion outside the fixed portion (110); The placement device (300) comprises a movable slider (310) that reciprocates left and right along with the circular motion of the movable platform (210), a rod end pulley (330) disposed below the movable slider (310), and a pair of placement rings (350) for limiting the tourniquet placement interval. When the rod end pulley (330) moves along with the movable platform (210), the contact position between the rod end pulley (330) and the cam groove (1110) continuously changes, thereby driving the movable platform (210) to reciprocate, thereby simulating an artificial periodic change in the binding position of the tourniquet on the patient's arm.

2. The surgical care tourniquet winding device according to claim 1, characterized in that: The limiting ring body (112) and the fixed ring body (111) are integrally formed; a plurality of regularly distributed limiting sliding grooves (1120) are provided on the inner ring wall of the limiting ring body (112); a plurality of regularly distributed limiting sliding holes (1121) are provided on the outer ring wall of the limiting ring body (112); and the annular rack (113) is welded and fixed to the outer ring wall of the fixed ring body (111).

3. The surgical care tourniquet winding device according to claim 2, characterized in that: The rotating ring body (120) is rotatably connected to the outer side of the limiting ring body (112); an arc groove (121) extending leftward and rightward is provided on the outer side wall of the rotating ring body (120); and ring wall through holes (122) having the same number, corresponding positions and matching sizes as the limiting sliding holes (1121) are provided on the outer side wall of the rotating ring body (120).

4. The surgical care tourniquet winding device according to claim 3, characterized in that: The clamping portion (130) comprises a limiting slider (131), an arc-shaped clamping block (132) arranged inside the limiting slider (131), a limiting telescopic rod (133) with two ends respectively clamped between the limiting slider (131) and the arc-shaped clamping block (132), and a first pressure spring (134) sleeved on the outside of the limiting telescopic rod (133).

5. The surgical care tourniquet winding device according to claim 4, characterized in that: An outer convex rod (1310) having an end extending to the outside of the arc groove (121) is integrally formed on the outer wall of the limit slider (131). The elastic force provided by the first pressure spring (134) pushes the arc clamping block (132) to move inward. When the rotating ring body (120) is moved to drive it to rotate, the contact position between the outer convex rod (1310) and the arc groove (121) is changed, thereby driving the limit slider (131) to move inward. After the arc clamping block (132) contacts the patient's arm, the first pressure spring (134) contracts to generate elastic force, thereby fixing the fixing part (110) on the outside of the patient's arm.

6. The surgical care tourniquet winding device according to claim 5, characterized in that: The limiting protrusion (140) is slidably connected to the inside of the limiting sliding hole (1121); one end of the first pressure spring (134) is adhered to the outer wall of the limiting protrusion (140) and the other end is adhered to the inner wall of the limiting sliding hole (1121).

7. The surgical care tourniquet winding device according to claim 6, characterized in that: The movable platform (210) is slidably connected between the two limiting ring bodies (112), and the outer side wall corners of the movable platform (210) are integrally formed with convex rods for limiting the movement thereof. The top surface of the movable platform (210) is provided with a table top slot (211) that passes through from top to bottom, the top surface of the movable platform (210) is provided with a placement slot (212) on one side of the table top slot (211), and the top surface of the movable platform (210) is provided with a table body through slots (213) on both left and right sides of the placement slot (212). When in use, the top slot of the placement slot (212) is fixedly connected to a placement plate by screws.

8. The surgical care tourniquet winding device according to claim 7, characterized in that: The outer side of the output shaft of the driving motor (220) is fixedly connected to a worm gear (250) via a bayonet pin; the left and right ends of the rotating shaft (230) are respectively rotatably connected to the groove walls of two platform through grooves (213); a worm (260) meshing with the worm gear (250) is fixedly connected to the outer side wall of the rotating shaft (230) near the center position via a bayonet pin; the shaft end gear (240) is fixedly connected to the end position of the rotating shaft (230) via a bayonet pin and meshes with the annular rack (113).

9. The surgical care tourniquet winding device according to claim 8, characterized in that: The movable slider (310) is slidably connected to the inside of the table top slot (211); a rotating rod (320) is rotatably connected to the bottom surface of the movable slider (310); the rod end pulley (330) is clamped and fixed to the end position of the rotating rod (320); an extension rod (340) is clamped and fixed to the outer wall of the movable slider (310); the placement ring (350) away from the movable slider (310) can be disassembled from the extension rod (340) to replace the tourniquet.

10. A method for winding a tourniquet for surgical care, using the tourniquet winding device for surgical care according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. First, the operator lifts the patient's arm and puts the fixing portion (110) of the outer cover device (100) on the outside of the patient's arm. In the subsequent operation, the operator always holds the patient's wrist and keeps the angle between the patient's arm and the bed; S2, then, the pair of rotating ring bodies (120) are moved, so that the contact position between the outer protruding rod (1310) in the clamping portion (130) and the wall of the arc-shaped groove (121) changes, thereby driving the limiting slider (131) to move inward; S3, after the arc-shaped clamping block (132) contacts the arm, the limiting telescopic rod (133) and the first pressure spring (134) contract, and the elastic force generated by the contraction of the first pressure spring (134) ensures the stability of the fixing portion (110) on the outside of the patient's arm; S4. Subsequently, the operator guides the end of the tourniquet to the patient's arm, presses the end of the tourniquet against the patient's arm through a thin rod, and then starts the drive motor (220), which drives the worm gear (250) to rotate through the output shaft; S5, after the worm wheel (250) rotates, it contacts the worm (260), thereby driving the rotating shaft (230) to rotate, and then driving the shaft end gear (240) to rotate accordingly, so that the shaft end gear (240) contacts the annular rack (113), and the movable platform (210) performs a circular motion outside the fixed ring body (111); S6. During the circular motion of the movable platform (210) outside the fixed ring body (111), the contact position between the rod end pulley (330) and the groove wall of the cam groove (1110) is constantly changed, thereby driving the movable slider (310) to move back and forth left and right, thereby continuously pulling out the tourniquet in the placement ring (350), and allowing the tourniquet to be wrapped around the patient's arm.

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