Protective support device for hemodialysis puncture part

Abstract

The invention discloses a protection support device for a hemodialysis puncture part, and belongs to the technical field of hemodialysis medical treatment. The protection support device for the hemodialysis puncture part comprises a fixing frame, and further comprises a bearing plate, a supporting plate, a fixing plate and a supporting plate, and the bearing plate is fixed to the upper surface of the fixing frame and provided with a sliding hole; the buffer cushion is arranged on the bearing plate; one end of the sliding rod is connected with the cushion pad; the first bag body is arranged on the fixing frame and located below the bearing plate, and the upper surface of the first bag body is connected with the other end of the sliding rod; the sliding plate is horizontally and slidably connected with the fixing frame. The second bag body is arranged on the sliding plate in a contracted mode, and the second bag body is communicated with the first bag body. According to the protection support device for the hemodialysis puncture part, the supporting area between the protection support device and limbs is larger, the problem that local blood flow of the limbs is not smooth due to self gravity compression can be better solved, numbness of the limbs is avoided, and the treatment experience of a patient is improved.

Description

Technical Field

[0001] The invention relates to the technical field of hemodialysis medical treatment, and in particular to a protective support device for a hemodialysis puncture site. Background Art

[0002] As the number of patients with kidney disease continues to increase worldwide, the demand for hemodialysis treatment continues to grow. As an effective renal replacement therapy, hemodialysis can help patients remove metabolic waste and excess water from the body, maintain electrolyte and acid-base balance, and thus prolong the patient's life.

[0003] Hemodialysis is usually performed on the limbs. However, during hemodialysis, patients need to maintain a fixed posture for a long time. When the tissues on the limbs are compressed, local blood flow is poor, which makes the limbs prone to numbness and increases discomfort. In addition, the puncture operation during hemodialysis treatment is a painful and uncomfortable experience for patients. Therefore, it is particularly important to design a protective stent device that can reduce the pain of patients and improve the comfort of treatment. Summary of the invention

[0004] The purpose of the present invention is to overcome the problems in the prior art and to provide a protective bracket device for a hemodialysis puncture site. The second balloon is inflated to provide a larger support area for the limb. At the same time, as the pressure on the buffer pad is greater, the buffer pad is deformed after being compressed, and the contact area with the limb is larger, which can better alleviate the problem of local blood flow problems caused by the limb's own gravity compression, avoid limb numbness, and improve the patient's treatment experience.

[0005] The present invention provides a protective support device for a hemodialysis puncture site, comprising a fixing frame, and also comprising: a bearing plate fixed on the upper surface of the fixing frame, the bearing plate having a sliding hole; a buffer pad arranged on the bearing plate; a sliding rod slidably connected to the sliding hole, one end of the sliding rod being connected to the buffer pad; a first capsule body arranged on the fixing frame and located below the bearing plate, the upper surface of the first capsule body being connected to the other end of the sliding rod; a sliding plate horizontally slidingly connected to the fixing frame; a second capsule body, arranged on the sliding plate in a contracted state, and the second capsule body is connected to the first capsule body.

[0006] Preferably, the lower end of the sliding rod is rotatably connected to a transverse axis, and the transverse axis is inserted into a slot hole at one end of the rotating rod. The transverse axis can move in the slot hole, and the other end of the rotating rod is fixedly connected to a first rotating shaft, and the first rotating shaft is rotatably set on the supporting plate, and the end of the first rotating shaft is connected to the second rotating shaft through a sprocket-chain structure, and the second rotating shaft is rotatably set at an edge above the supporting plate, and the second rotating shaft is fixedly connected to an arc-shaped pressure arm, and the arc-shaped pressure arm is used to press the arm above the buffer pad under the drive of the second rotating shaft.

[0007] Preferably, the side wall of the skateboard is fixedly connected with a vertical plate, the surface of the vertical plate is connected to one end of a continuous folding plate folded into a plurality of W shapes, the other end of the continuous folding plate is connected to the fixed frame, the continuous folding plate has a plurality of folds parallel to each other, and all of them are vertical, and the upper edge of the continuous folding plate is connected to the lower surface of the second capsule.

[0008] Preferably, the sprocket-chain structure includes: a first sprocket fixedly disposed at the end of the first rotating shaft; a second sprocket fixedly disposed at the end of the second rotating shaft; and a chain connected to and wound around the first sprocket and the second sprocket.

[0009] Preferably, there are two transverse axes, and the two transverse axes are coaxially arranged, each transverse axis corresponds to a sliding rod and a rotating rod, the two rotating rods are respectively located on both sides of the bearing plate, and are used to drive an arc-shaped pressure arm to rotate through the first rotating shaft and the sprocket-chain structure respectively; the ends of the two transverse axes close to each other are respectively fixedly connected to the two ends of the connecting rod, the middle part of the connecting rod is fixedly connected to the transverse rod, the two ends of the transverse rod are respectively connected to one end of an electric telescopic rod, and the other ends of the two electric telescopic rods are fixedly arranged on the fixing frame; a pressure sensor is provided on the surface of the buffer pad, and the pressure sensor is electrically connected to the two electric telescopic rods.

[0010] Preferably, the buffer pad is a third capsule body, and a placement groove for placing the slide bar is provided on the lower surface of the third capsule body, the groove wall of the placement groove is integrally formed with the third capsule body, and the top wall of the placement groove coincides with the upper wall of the third capsule body.

[0011] Preferably, the fixing frame is rotatably arranged on the fixing seat via a vertical damping shaft, a sliding groove is arranged on the upper surface of the fixing seat, an angle α is formed between the length direction of the sliding groove and the axis of the second rotating shaft, a sliding block is slidably arranged in the sliding groove, and the sliding block is fixedly connected to the lower surface of the sliding plate.

[0012] Preferably, the edge of the slide plate is provided with a notch for the damping shaft to pass through.

[0013] Preferably, the fixing seat is an inverted N-shaped plate having an upper plate surface and a lower plate surface, the damping shaft and the sliding groove are arranged on the upper plate surface, and a threaded hole is arranged on the lower plate surface, and a stud is fitted in the threaded hole. By tightening the stud, the fixing seat can be fixed on the bed.

[0014] Preferably, the number of the continuous folding plates is two, the extension directions of the two continuous folding plates are parallel to each other, and the two ends of the two continuous folding plates are respectively fixedly connected by a connecting plate, one connecting plate is connected to the vertical plate, and the other connecting plate is connected to the fixed frame, and the upper edges of the two continuous folding plates are connected to the second capsule.

[0015] Compared with the prior art, the present invention has the following beneficial effects: When in use, the slide plate is pulled out, and when the patient's limb is placed on the cushion pad, the cushion pad pushes the slide bar downward to squeeze the first capsule, so that the fluid in the first capsule enters the second capsule, so that the second capsule on the slide bar expands and continues to support the limb, which can not only increase the area of ​​the patient's limb supported, but also reduce the weight borne by the cushion pad. Since the supporting force between the cushion pad and the second capsule changes adaptively according to the weight of the limb, when the patient's limb is heavier, the greater the pressure on the cushion pad, the more fluid is introduced from the first capsule to the second capsule when the slide bar squeezes the first capsule, and the second capsule expands and supports a larger area of ​​the limb. At the same time, due to the greater pressure on the cushion pad, the cushion pad is deformed after being compressed, and the contact area with the limb is larger, which can better alleviate the problem of local blood flow obstruction caused by the limb's own gravity compression, avoid numbness of the limb, and improve the patient's treatment experience. The slot at the end of the rotating rod is in the shape of an elongated strip, and the length direction of the elongated strip is the same as that of the rotating rod. The transverse axis can slide relatively in the slot. After the slide rod is pressed by the buffer pad, it drives the transverse axis to push the rotating rod downward, and the rotating rod then drives the first rotating shaft to rotate on the bearing plate, and transmits the torsion to the second rotating shaft and the arc-shaped pressing arm through the sprocket-chain structure, so that the arc-shaped pressing arm can be pressed on the surface of the limb under the drive of the limb's own gravity, which can reduce the movement of the limb and prevent the puncture needle from falling off. The continuous folding plate is made of paper or plastic. When the slide plate is pulled out, the continuous folding plate is evenly unfolded to provide support for the second capsule and can pull the second capsule open, so that the fluid can more conveniently fill the interior of the second capsule. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A perspective view of the present invention; Figure 2 for Figure 1 Sectional view at AA in the middle; Figure 3 for Figure 2 A magnified view of the middle cushion; Figure 4 for Figure 1 Action state diagram; Figure 5 for Figure 4 A cross-sectional view of Figure 6 for Figure 4 A partial schematic diagram of Figure 7 for Figure 1 Bottom schematic diagram of ; Figure 8 for Figure 1 Sectional view at the middle BB; Fig. 9 for Figure 8 Schematic diagram of the middle fixing frame; Fig.10 is a three-dimensional diagram of the fixing frame of the present invention; Fig.11 is a three-dimensional diagram of the carrying plate in the present invention; Fig.12 It is a schematic diagram of the position of the sliding slot on the fixed seat; Fig.13 Schematic diagram of different states of the continuous folding plate; Fig.14 is a schematic diagram of an arc-shaped pressure arm; Fig.15 is a schematic diagram of a slide bar in the present invention; Fig.16 is a schematic diagram of a rotating rod in the present invention; Fig.17 It is a first modeling schematic diagram of the present invention; Fig.18 This is a second modeling schematic diagram of the present invention.

[0017] Description of reference numerals: 1. Fixed frame, 2. Buffer pad, 4. Load-bearing plate, 5. Sliding hole, 6. Sliding rod, 7. First capsule, 8. Slide plate, 9. Second capsule, 10. Transverse axis, 11. Rotating rod, 12. First rotating axis, 13. Arc pressure arm, 14. Sprocket-chain structure, 15. Continuous folding plate, 16. First sprocket, 17. Second sprocket, 18. Chain, 19. Connecting rod, 20. Transverse rod, 21. Electric telescopic rod, 22. Pressure sensor, 23. Placement groove, 24. Damping shaft, 25. Notch, 26. Fixed seat, 27. Sliding groove, 28. Sliding block, 29. Stud, 30. Connecting plate. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of 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.

[0019] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the present invention belongs. "Include" or "comprises" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Inside", "outside", "upper", "lower", "far", "near", "front", "back", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] The drawings in the present invention are not drawn strictly according to the actual scale, and the specific size and quantity of each structure can be determined according to actual needs. The drawings described in the present invention are only schematic diagrams of the structures.

[0021] The present invention provides a protective stent device for a hemodialysis puncture site. Figure 1-18 It includes a fixing frame 1, and also includes: a bearing plate 4, which is fixed on the upper surface of the fixing frame 1, and has a sliding hole 5 on the bearing plate 4; a buffer pad 2, which is arranged on the bearing plate 4; a sliding rod 6, which is slidably connected to the sliding hole 5, and one end of the sliding rod 6 is connected to the buffer pad 2; a first capsule 7, which is arranged on the fixing frame 1 and is located below the bearing plate 4, and the upper surface of the first capsule 7 is connected to the other end of the sliding rod 6; a sliding plate 8, which is horizontally slidably connected to the fixing frame 1; a second capsule 9, which is arranged on the sliding plate 8 in a contracted state, and the second capsule 9 is connected to the first capsule 7.

[0022] The thickness of the buffer pad 2 is 5-10cm, the width is 10-20cm, and the length is 15-25cm. There are ear plates on both sides of the supporting plate 4, and it is fixedly connected to the fixing frame 1 through the ear plates. The buffer pad 2 is the main supporting body of the limb. The upper surface of the second capsule 9 after expansion is a downward concave arc surface, which is used to increase the contact area with the limb. The first capsule 7 is filled with fluid, and the fluid includes water and gas. The second capsule 9 is connected to the first capsule 7 through a catheter. The first capsule 7 and the second capsule 9 are both made of rubber. The upper surface of the first capsule 7 is fixedly connected to a flat plate that can make the first capsule 7 evenly compressed. The bottom of the fixing frame 1 is provided with a corresponding slide groove for slidingly connecting the slide plate 8.

[0023] During use, the slide plate 8 is pulled out, and when the patient's limb is placed on the cushion pad 2, the cushion pad 2 pushes the slide bar 6 downward to squeeze the first capsule 7, so that the fluid in the first capsule 7 enters the second capsule 9, so that the second capsule 9 on the slide plate 8 expands and continues to support the limb, which can not only increase the area supporting the patient's limb, but also reduce the weight borne by the cushion pad 2. Since the supporting force between the cushion pad 2 and the second capsule 9 changes adaptively according to the weight of the limb, when the patient's limb is heavier, the greater the pressure on the cushion pad 2, the more fluid is introduced from the first capsule 7 to the second capsule 9 when the slide bar 6 squeezes the first capsule 7, the second capsule 9 expands and the supporting area of ​​the limb is larger. At the same time, due to the greater pressure on the cushion pad 2, the cushion pad 2 is deformed after being compressed, and the contact area with the limb is larger, which can better alleviate the problem of local blood flow problems caused by the limb's own gravity compression, avoid limb numbness, and improve the patient's treatment experience.

[0024] In this embodiment, Figure 2-7 The lower end of the sliding rod 6 is rotatably connected to a transverse axis 10, and the transverse axis 10 is inserted into a slot at one end of a rotating rod 11. The transverse axis 10 can move in the slot, and the other end of the rotating rod 11 is fixedly connected to a first rotating shaft 12, and the first rotating shaft 12 is rotatably set on the supporting plate 4. The end of the first rotating shaft 12 is connected to the second rotating shaft through a sprocket-chain structure 14, and the second rotating shaft is rotatably set at the edge above the supporting plate 4. The second rotating shaft is fixedly connected to an arc-shaped pressure arm 13, and the arc-shaped pressure arm 13 is used to press the arm above the buffer pad 2 under the drive of the second rotating shaft.

[0025] The arc-shaped pressure arm 13 has a plurality of arc-shaped rods, each of which has a width of 1-2 cm and is made of soft rubber.

[0026] The slot at the end of the rotating rod 11 is in the shape of an elongated strip, and the length direction of the elongated strip is the same as the length direction of the rotating rod 11. The horizontal axis 10 can slide relatively in the slot. After the slide rod 6 is subjected to the pressure of the buffer pad 2, it drives the horizontal axis 10 to push the rotating rod 11 downward. The rotating rod 11 then drives the first rotating shaft 12 to rotate on the supporting plate 4, and transmits the torsion to the second rotating shaft and the arc-shaped pressure arm 13 through the sprocket-chain structure 14, so that the arc-shaped pressure arm 13 can be pressed on the surface of the limb under the drive of the limb's own gravity, which can reduce the movement of the limb and prevent the puncture needle from falling off.

[0027] In this embodiment, Figure 6 and Fig.13The side wall of the slide plate 8 is fixedly connected with a vertical plate, and the surface of the vertical plate is connected with one end of a continuous folding plate 15 folded into multiple W shapes, and the other end of the continuous folding plate 15 is connected to the fixed frame 1, and the continuous folding plate 15 has multiple folds parallel to each other, and all of them are vertical, and the upper edge of the continuous folding plate 15 is connected to the lower surface of the second capsule 9.

[0028] The continuous folding plate 15 is made of paper or plastic. When the slide plate 8 is pulled out, the continuous folding plate 15 is evenly unfolded to provide support for the second capsule 9 and can pull the second capsule 9 open, so that the fluid can more conveniently fill the interior of the second capsule 9.

[0029] In this embodiment, Figure 1 The sprocket-chain structure 14 includes: a first sprocket 16 fixedly disposed at the end of the first rotating shaft 12; a second sprocket 17 fixedly disposed at the end of the second rotating shaft; and a chain 18 connected to and wound around the first sprocket 16 and the second sprocket 17.

[0030] The second sprocket 17 transmits the torque to the first sprocket 16 through the chain 18 , so that the first rotating shaft 12 can drive the arc-shaped pressing arm 13 to rotate.

[0031] Here, the module of the second sprocket 17 is required to be greater than the module of the first sprocket 16, and the module of the second sprocket 17 is greater than the module of the first sprocket 16 by more than 2, so as to convert the smaller downward distance of the slide bar 6 into a larger rotation angle of the arc-shaped pressure arm 13, thereby avoiding the problem that the arc-shaped pressure arm 13 cannot contact and press on the limb due to the light weight of the limb. Similarly, the sprocket-chain structure 14 here can be simply replaced by a pulley-belt structure. After the replacement, the circumference of the pulley corresponding to the second sprocket 17 is greater than the circumference of the pulley corresponding to the first sprocket 16.

[0032] In this embodiment, Figure 5 and Figure 9-10 There are two transverse axes 10, and the two transverse axes 10 are coaxially arranged, each transverse axis 10 corresponds to a sliding rod 6 and a rotating rod 11, and the two rotating rods 11 are respectively located on both sides of the bearing plate 4, and are used to drive an arc-shaped pressure arm 13 to rotate through the first rotating shaft 12 and the sprocket-chain structure 14 respectively; the ends of the two transverse axes 10 close to each other are respectively fixedly connected to the two ends of the connecting rod 19, and the middle part of the connecting rod 19 is fixedly connected to the transverse rod 20, and the two ends of the transverse rod 20 are respectively connected to one end of an electric telescopic rod 21, and the other ends of the two electric telescopic rods 21 are fixedly arranged on the fixed frame 1; a pressure sensor 22 is provided on the surface of the buffer pad 2, and the pressure sensor 22 is electrically connected to the two electric telescopic rods 21.

[0033] Since there is friction loss in the process of the mechanical transmission arm exerting downward pressure on the slide bar 6, and the sprocket-chain structure 14 also has a large modulus ratio, there is a problem of insufficient downward pressure exerted by the arm on the slide bar 6. Therefore, the above structure is designed to supplement the downward pressure exerted by the arm on the slide bar 6.

[0034] When the pressure sensor 22 detects the weight of the arm, the pressure sensor 22 transmits the arm weight signal to the controller. The controller determines the weight of the arm, sends an action signal for shortening the electric telescopic rod 21, and controls the electric telescopic rod 21 to shorten the corresponding distance. When the electric telescopic rod 21 is shortened, the traction cross bar 20 and the connecting rod 19 move downward. The downward movement of the connecting rod 19 further drives the two horizontal axes 10 to move the rotating rod 11 downward to ensure that the arc-shaped pressure arm 13 has a sufficient rotation angle.

[0035] In this embodiment, Figure 3 The buffer pad 2 is a third capsule body, and a placement groove 23 for placing the slide bar 6 is provided on the lower surface of the third capsule body. The groove wall of the placement groove 23 is integrally formed with the third capsule body, and the top wall of the placement groove 23 coincides with the upper wall of the third capsule body.

[0036] The third sac is filled with fluid, and the above structure enables the upper sac wall of the third sac to directly transfer the gravity or pressure of the arm to the slide bar 6 .

[0037] In this embodiment, Fig.12 The fixing frame 1 is rotatably set on the fixing seat 26 through the vertical damping shaft 24. The upper surface of the fixing seat 26 is provided with a sliding groove 27. The length direction of the sliding groove 27 forms an angle α with the axis of the second rotating shaft. A sliding block 28 is slidably set in the sliding groove 27. The sliding block 28 is fixedly connected to the lower surface of the slide plate 8.

[0038] The above structure is designed because during hemodialysis on a limb, the limb is usually kept at a certain angle to the body trunk to facilitate puncturing and fixing the needle on the limb.

[0039] The fixing seat 26 is fixed on the side of the bed. Before placing the limb on the cushion 2, the fixing frame 1 is rotated, and the fixing frame 1 drives the skateboard 8 and the slider 28 on the skateboard 8 to rotate. Since there is an angle α between the length direction of the sliding groove 27 and the axis of the second rotating shaft, and the angle range of the angle α is 20°-60°, the sliding groove 27 generates resistance to the slider 28. In order for the slider 28 to rotate synchronously with the skateboard 8, the torsional force of the fixing frame 1 pushes the slider 28 to overcome the resistance generated by the sliding groove 27 on the slider 28, and enables the slider 28 to slide along the sliding groove 27, thereby simultaneously pushing the skateboard 8 out of the fixing frame 1, avoiding the action of manually pulling out the skateboard 8.

[0040] In this embodiment, Fig.12 The edge of the slide plate 8 is provided with a notch 25 for the damping shaft 24 to pass through.

[0041] The notch 25 is mainly used to overcome the problem of interference between the damping shaft 24 and the slide plate 8 .

[0042] In this embodiment, Figure 4-6 The fixing seat 26 is an inverted N-shaped plate having an upper plate surface and a lower plate surface, the damping shaft 24 and the sliding groove 27 are arranged on the upper plate surface, and a threaded hole is arranged on the lower plate surface, and a stud 29 is fitted in the threaded hole. By tightening the stud 29, the stud 29 can fix the fixing seat 26 on the bed.

[0043] A rubber pad is fixedly provided at the end of the tightening stud 29 , and the fixing seat 26 is moved to the edge of the bed body. The tightening stud 29 can enable the stud 29 to fix the fixing seat 26 on the bed body.

[0044] In this embodiment, Fig.13 There are two continuous folding plates 15, the extension directions of the two continuous folding plates 15 are parallel to each other, and the two ends of the two continuous folding plates 15 are fixedly connected by a connecting plate 30 respectively, one connecting plate 30 is connected to the vertical plate, and the other connecting plate 30 is connected to the fixed frame 1, and the upper edges of the two continuous folding plates 15 are connected to the second capsule 9.

[0045] It is used to pull the bottom edge of the second capsule 9 around to avoid the problem of untimely or insufficient expansion of the second capsule 9.

[0046] The method of using the protective stent device for hemodialysis puncture site of the present invention is as follows: First, clamp the fixing seat 26 on the edge of the bed and tighten the studs 29 to fix it; Then, the fixing frame 1 is rotated to a suitable angle, and the slide plate 8 slides out of the fixing frame 1; Next, the limb after puncture, such as the patient's arm, is placed on the cushion pad 2, and the arc-shaped pressing arm 13 falls down and presses on the patient's arm with appropriate pressure to reduce the movement of the limb and prevent the puncture needle from falling off; Finally, the hemodialysis is finished, the arc-shaped pressing arm 13 is moved out of the patient's arm, the fixing seat 26 is removed, and the patient's wound is treated.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A protective support device for a hemodialysis puncture site, comprising a fixing frame (1), characterized in that: Also includes: A bearing plate (4) fixed on the upper surface of the fixing frame (1), the bearing plate (4) having a sliding hole (5); A buffer pad (2) is arranged on the bearing plate (4); A sliding rod (6) slidably connected to the sliding hole (5), one end of the sliding rod (6) being connected to the buffer pad (2); A first capsule (7) is arranged on the fixing frame (1) and is located below the bearing plate (4), and the upper surface of the first capsule (7) is connected to the other end of the sliding rod (6); A slide plate (8) horizontally slidably connected to the fixing frame (1); A second capsule (9) is arranged on the slide plate (8) in a contracted state, and the second capsule (9) is connected to the first capsule (7); After the slide plate (8) is pulled out and the patient's limb is placed on the cushion pad (2), the cushion pad (2) pushes the slide bar (6) downward to squeeze the first capsule (7), so that the fluid in the first capsule (7) enters the second capsule (9), causing the second capsule (9) on the slide plate (8) to expand and continue to support the limb.

2. A protective stent device for a hemodialysis puncture site as claimed in claim 1, characterized in that: The lower end of the sliding rod (6) is rotatably connected to a transverse axis (10), the transverse axis (10) is inserted into a slot hole at one end of a rotating rod (11), and the transverse axis (10) can move in the slot hole. The other end of the rotating rod (11) is fixedly connected to a first rotating shaft (12), and the first rotating shaft (12) is rotatably arranged on the supporting plate (4). The end of the first rotating shaft (12) is connected to a second rotating shaft through a sprocket-chain structure (14), and the second rotating shaft is rotatably arranged on the edge above the supporting plate (4). The second rotating shaft is fixedly connected to an arc-shaped pressing arm (13), and the arc-shaped pressing arm (13) is used to press the arm above the buffer pad (2) under the drive of the second rotating shaft. When the slide bar (6) is subjected to pressure from the buffer pad (2), it drives the horizontal axis (10) to push the rotating rod (11) downward, and the rotating rod (11) then drives the first rotating shaft (12) to rotate on the supporting plate 4, and transmits the torsion to the second rotating shaft and the arc-shaped pressure arm (13) through the sprocket-chain structure (14).

3. A protective stent device for a hemodialysis puncture site as claimed in claim 1, characterized in that: The side wall of the slide plate (8) is fixedly connected to a vertical plate, the surface of the vertical plate is connected to one end of a continuous folding plate (15) folded into a plurality of W shapes, the other end of the continuous folding plate (15) is connected to the fixed frame (1), the continuous folding plate (15) has a plurality of mutually parallel folds, and all of them are vertical, the upper edge of the continuous folding plate (15) is connected to the lower surface of the second capsule (9).

4. A protective stent device for a hemodialysis puncture site as claimed in claim 2, characterized in that: The sprocket-chain structure (14) comprises: A first sprocket (16) fixedly arranged at an end of the first rotating shaft (12); A second sprocket (17) fixedly arranged at an end of the second rotating shaft; The chain (18) is connected to and wound around the first sprocket (16) and the second sprocket (17).

5. A protective stent device for a hemodialysis puncture site as claimed in claim 2, characterized in that: The number of the transverse axes (10) is two, and the two transverse axes (10) are coaxially arranged, each transverse axis (10) corresponds to a sliding rod (6) and a rotating rod (11), and the two rotating rods (11) are respectively located on both sides of the bearing plate (4) and are used to drive an arc-shaped pressure arm (13) to rotate through the first rotating shaft (12) and the sprocket-chain structure (14); The ends of the two transverse axes (10) that are close to each other are respectively fixedly connected to the two ends of the connecting rod (19); the middle part of the connecting rod (19) is fixedly connected to the cross bar (20); the two ends of the cross bar (20) are respectively connected to one end of an electric telescopic rod (21); and the other ends of the two electric telescopic rods (21) are fixedly arranged on the fixed frame (1); A pressure sensor (22) is provided on the surface of the buffer pad (2), and the pressure sensor (22) is electrically connected to the two electric telescopic rods (21).

6. A protective stent device for a hemodialysis puncture site as claimed in claim 1, characterized in that: The buffer pad (2) is a third capsule body, and a placement groove (23) for placing the slide bar (6) is provided on the lower surface of the third capsule body, the groove wall of the placement groove (23) is integrally formed with the third capsule body, and the top wall of the placement groove (23) coincides with the upper wall of the third capsule body.

7. A protective stent device for a hemodialysis puncture site as claimed in claim 1, characterized in that: The fixing frame (1) is rotatably arranged on a fixing seat (26) via a vertical damping shaft (24); a sliding groove (27) is arranged on the upper surface of the fixing seat (26); an angle α is formed between the length direction of the sliding groove (27) and the axis of the second rotating shaft; a sliding block (28) is slidably arranged in the sliding groove (27); and the sliding block (28) is fixedly connected to the lower surface of the sliding plate (8); The fixed frame (1) is rotated, and the fixed frame (1) drives the slide plate (8) and the slider (28) on the slide plate (8) to rotate, and the slider (28) slides along the sliding groove (27) at the same time.

8. A protective support device for a hemodialysis puncture site as claimed in claim 7, characterized in that: The edge of the slide plate (8) is provided with a notch (25) for the damping shaft (24) to pass through.

9. A protective stent device for a hemodialysis puncture site as claimed in claim 7, characterized in that: The fixing seat (26) is an inverted N-shaped plate having an upper plate surface and a lower plate surface, the upper plate surface being provided with the damping shaft (24) and the sliding groove (27), the lower plate surface being provided with a threaded hole, the threaded hole being provided with a stud (29), and the stud (29) can be tightened to fix the fixing seat (26) on the bed body.

10. A protective support device for a hemodialysis puncture site as claimed in claim 3, characterized in that: The number of the continuous folding plates (15) is two, the extension directions of the two continuous folding plates (15) are parallel to each other, and the two ends of the two continuous folding plates (15) are respectively fixedly connected by a connecting plate (30), one connecting plate (30) is connected to the vertical plate, and the other connecting plate (30) is connected to the fixed frame (1), and the upper edges of the two continuous folding plates (15) are both connected to the second capsule (9).

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