Dialysis tourniquet capable of automatically adjusting pressing force

Abstract

The invention relates to the technical field of hemostasis, in particular to a dialysis tourniquet capable of automatically adjusting pressing force. The tightening and pressing mechanism comprises an isolation lantern ring, cotton yarn is fixedly installed in the isolation lantern ring, and the tightening and pressing mechanism is used for tightening the belt body to enable the cotton yarn to press a puncture point; and the secondary pressing mechanism comprises a lower pressing block, a notch is formed in the middle position in the belt body, the lower pressing block is in sliding connection with the notch, and a lower pressing disc is fixedly installed on the lower end face of the lower pressing block. Through the arrangement of water-soluble paper, in the process of pressing a puncture point by cotton yarn, if the bleeding amount of blood of a patient is too large, the water-soluble paper is fused by the blood, so that the water-soluble paper is broken and loses traction force on an arc-shaped lifting plate, and the arc-shaped lifting plate drives a heating box and a loading box to descend to extrude a lower pressing block; and the pressing block drives the pressing disc to perform secondary extrusion on the cotton yarn, so that the puncture point is prevented from bleeding again.

Description

Technical Field

[0001] The invention relates to the technical field of hemostasis, and in particular to a dialysis tourniquet with automatically adjustable pressing force. Background Art

[0002] With the continuous development of modern medical technology and the increasing trend of population aging, dialysis treatment, as an important renal replacement therapy, has played a vital role in the treatment of patients with acute and chronic renal failure. However, during the dialysis process, the problem of hemostasis during puncture of arteriovenous fistula has always been a difficult problem for medical staff. Traditional hemostasis methods, such as covering the puncture point with ordinary hemostatic patches, pressing with cotton balls or gauze, etc., are cumbersome to operate and have unstable hemostatic effects. In addition, the hemostatic components and hemostatic tourniquets disclosed in the publication number CN117137570B are difficult to stop bleeding at the puncture point. During the process, the tourniquet can adjust the pressing force to stop bleeding at the patient's puncture point. On the one hand, the patients who need to stop bleeding include ordinary patients, dialysis patients, and other types of non-dialysis patients (such as central venous catheters and indwelling needles, etc.). The difference between the above patients is that ordinary patients bleed less and do not need a tourniquet and can stop bleeding with simple measures. Dialysis patients and other types of non-dialysis patients bleed relatively more and need a tourniquet to stop bleeding. The tourniquets of the prior art are usually only applicable to dialysis patients or other types of non-dialysis patients, and their applicability is general. The prior art lacks a tourniquet that can be applicable to dialysis patients or non-dialysis patients with relatively large amounts of bleeding, and can automatically achieve the following according to the amount of bleeding: no additional hemostatic measures are taken for non-dialysis patients, and additional secondary pressing hemostatic measures are taken for dialysis patients for targeted hemostasis. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, the present invention provides a tourniquet that can automatically achieve, according to the amount of bleeding: no additional hemostatic measures are taken for non-dialysis patients, and additional secondary compression hemostatic measures are taken for dialysis patients to perform targeted hemostasis.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0005] The present invention provides a dialysis tourniquet with automatically adjustable pressing force, comprising:

[0006] belt body;

[0007] A tightening and pressing mechanism, the tightening and pressing mechanism comprising an isolating ring, in which cotton yarn is fixedly installed, and the tightening and pressing mechanism is used to tighten the belt body so that the cotton yarn presses the puncture point;

[0008] A secondary pressing mechanism comprises a pressing block, a slot is provided in the middle position of the belt body, the pressing block is slidably connected to the slot, a pressing disc is fixedly mounted on the lower end surface of the pressing block, a water-soluble paper is provided between the pressing disc and the cotton yarn, the water-soluble paper is in a taut state to support the pressing block, when a large amount of bleeding occurs at the puncture point, the blood melts the water-soluble paper, the pressing block loses its supporting force and descends to apply secondary pressure to the puncture point to stop bleeding.

[0009] Preferably, two shrinkage belts are symmetrically installed on the lower end of the belt body, the two shrinkage belts are arc-shaped structures and have tooth grooves at the lower position, a support block is slidably installed on the outer side of the lower end of the two shrinkage belts, a rotating tooth head is rotatably installed in the support block, and the rotating tooth head is engaged with the tooth groove, two pairs of connecting blocks are symmetrically installed on both sides of the belt body, a rubber belt is fixedly installed between each pair of connecting blocks, and an extrusion block is fixedly installed on the upper end surfaces of the two rubber belts, and the extrusion block is fixedly connected to the isolation ring.

[0010] Preferably, a slide groove is provided in the rotating tooth head, a limiting slide groove is provided in the slide groove, a telescopic column is slidably installed in the limiting slide groove, a first spring is fixedly installed between the telescopic column and the rotating tooth head, a rotating rod is fixedly installed at the lower end of the telescopic column, a ratchet is embedded at the lower end of the support block, a rotating rod is fixedly installed on the lower end surface of the telescopic column, the rotating rod is slidably connected and clamped with the ratchet, and a coil spring is fixedly installed between the rotating tooth head and the support block.

[0011] Preferably, a lifting groove is provided in the belt body and at an upper position, two arc rods are symmetrically installed on the upper end surface of the belt body, two second springs are symmetrically installed on the inner bottom wall of the lifting groove, an arc-shaped lifting plate is fixedly installed on the upper ends of the two second springs, two fixing screws are threadedly installed on the upper end surface of the arc-shaped lifting plate, and the fixing screws fix one end of the water-soluble paper to the upper end of the arc-shaped lifting plate by threaded connection with the arc-shaped lifting plate, a heating box is fixedly installed at the center of the lower end surface of the arc-shaped lifting plate, a heating element is fixedly installed in the heating box, a loading box is fixedly installed on the lower end surface of the heating box, and a hot-melt material is fixedly installed in the loading box.

[0012] Preferably, two control devices are symmetrically installed in the belt body, and the control devices include a power supply, a controller and a buzzer alarm. Two support blocks are symmetrically installed on both sides of the heating box. A lifting column is slidably installed in the support block, and a lifting plate is fixedly installed on the upper end of the lifting column. The lifting plate is electrically connected to the heating element. The lifting column consists of a sliding column and a conductive disk, and a third spring is fixedly installed between the conductive disk and the support block. Two conductive heads are symmetrically installed on the inner bottom end of the lifting groove, and the conductive head and the conductive disk are electrically connected to the controller, and the controller is electrically connected to the buzzer. The power supply is used to provide electrical energy.

[0013] Preferably, it also includes an adjustable hemostasis component, which includes two slide grooves symmetrically opened on one side of the lifting groove, and oblique clamping blocks are symmetrically slidably installed in the two slide grooves, and two oblique descending blocks are symmetrically installed on the lower end surface of the arc-shaped lifting plate, and the oblique clamping blocks are driven to contact the oblique descending blocks.

[0014] Preferably, two baffles are symmetrically installed on one side of the belt body, and a rotating drive member is fixedly installed on one side of one of the baffles, and the output end of the rotating drive member passes through the baffle and is fixedly connected to a bidirectional screw, and the bidirectional screw is rotationally connected to the two baffles. Two moving blocks are provided on the outer wall thread sleeve of the bidirectional screw, and the moving blocks are fixed to the oblique clamping blocks at corresponding positions, and the rotating drive member is electrically connected to the controller.

[0015] Preferably, a liquid storage cavity is provided in the extrusion block, and two inlets and outlets are provided at upper and lower positions of the outer wall of the isolation ring, and herringbone membranes are fixedly installed in the two inlets and outlets. Hemostatic powder and a flow resistor are arranged in the liquid storage cavity, and the flow resistor is electrically connected to the controller.

[0016] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0017] First, through the setting of water-soluble paper, when the cotton yarn presses the puncture point, if the patient's blood loss is too large, the blood will melt the water-soluble paper, causing the water-soluble paper to break and lose traction on the arc-shaped lifting plate, allowing the arc-shaped lifting plate to drive the heating box and the loading box to descend, squeezing the lower pressing block, and allowing the lower pressing block to drive the lower pressing disc to squeeze the cotton yarn for the second time to prevent the puncture point from bleeding again.

[0018] Second, medical staff can twist the telescopic column through the diameter of their arms to drive the telescopic column and the rotating tooth head to rotate. During the rotation process, the rotating tooth head will drive the lower ends of the two contraction belts to move to tighten, so that the set cotton yarn can press the puncture point on the patient's arm. In the process of the two contraction belts moving relative to each other and tightening, the set extrusion belt and rubber cam will also slide and contact with the patient's arm. The rubber cam will roll on the patient's arm, allowing the protruding part to contact the patient's arm in a deformed manner to increase friction, thereby preventing the patient from being unstable when wearing the tourniquet due to various factors.

[0019] Third, during the second squeezing of the cotton yarn, the blood in the cotton yarn will flow into the liquid storage chamber through the herringbone membrane set on the top and mix with the hemostatic powder. The blood flow entering the liquid storage chamber is detected by the set flow resistor to determine whether the blood flow is too large and whether it can be stopped by a second press. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the tightening and pressing mechanism of the present invention;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the support block of the present invention and a partial enlarged diagram;

[0024] Figure 4 It is a bottom view structural schematic diagram of the extrusion block of the present invention;

[0025] Figure 5 It is a schematic diagram of the exploded structure of the secondary pressing mechanism of the present invention;

[0026] Figure 6 It is a schematic diagram of the cross-sectional structure of the belt body of the present invention;

[0027] Figure 7 for Figure 6 The enlarged structural diagram at A in the middle;

[0028] Figure 8 It is a schematic diagram of the cross-sectional structure of the extrusion block of the present invention;

[0029] Fig. 9 It is a bottom view structural diagram of the secondary pressing mechanism of the present invention;

[0030] Fig.10 for Fig. 9 The enlarged structural diagram at B in the middle;

[0031] Fig.11 It is a schematic diagram of the structure of the regulating hemostasis component of the present invention.

[0032] Figure numerals: 1, belt body; 2, tightening and pressing mechanism; 201, contraction belt; 202, squeezing belt; 203, rubber cam; 204, support block; 205, rotating tooth head; 206, limiting slide groove; 207, first spring; 208, telescopic column; 209, rotating rod; 210, coil spring; 211, ratchet; 212, connecting block; 213, rubber belt; 214, squeezing block; 215, isolation ring; 216, cotton yarn; 3, secondary pressing mechanism; 301, lifting groove; 302, arc rod; 303, arc lifting plate; 304, fixing screw; 305, water Dissolving paper; 306, second spring; 307, heating box; 308, heating element; 309, loading box; 310, hot-melt material; 311, pressing block; 312, pressing disc; 313, liquid storage chamber; 314, herringbone membrane; 315, supporting block; 316, lifting plate; 317, third spring; 318, lifting column; 319, conductive head; 320, control device; 4, adjusting hemostasis assembly; 401, slide; 402, baffle; 403, bidirectional screw; 404, rotating drive member; 405, moving block; 406, oblique clamping block; 407, oblique descending block. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments 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.

[0034] The present invention will be further described below in conjunction with the embodiments.

[0035] Example: Refer to Figures 1 to 11 , a dialysis tourniquet with automatically adjusted pressing force, comprising:

[0036] Belt body 1;

[0037] The tightening and pressing mechanism 2 includes an isolating ring 215, in which a cotton yarn 216 is fixedly installed. The tightening and pressing mechanism 2 is used to tighten the belt body 1 so that the cotton yarn 216 presses the puncture point. The belt body 1 can be made of rubber material and can be bent during the tightening process;

[0038] The secondary pressing mechanism 3 includes a pressing block 311. A notch is provided in the middle of the belt body 1. The pressing block 311 is slidably connected to the notch. A pressing disc 312 is fixedly installed on the lower end surface of the pressing block 311. A water-soluble paper 305 is provided between the pressing disc 312 and the cotton yarn 216. The water-soluble paper 305 is in a taut state to support the pressing block 311. When a large amount of bleeding occurs at the puncture point, the blood melts the water-soluble paper 305, and the pressing block 311 loses its supporting force and descends to apply secondary pressure to the puncture point to stop bleeding. The water-soluble paper 305 is a special paper whose main component is a soluble polymer that can be quickly dissolved in liquid.

[0039] Reference Figures 2 to 3 Two shrinking belts 201 are symmetrically installed at the lower end of the belt body 1. The two shrinking belts 201 are of arc-shaped structure and have tooth grooves at the lower position. A support block 204 is slidably installed on the outer side of the lower end of the two shrinking belts 201. A rotating tooth head 205 is rotatably installed in the support block 204, and the rotating tooth head 205 is engaged with the tooth groove. Two pairs of connecting blocks 212 are symmetrically installed on both sides of the belt body 1. A rubber belt 213 is fixedly installed between each pair of connecting blocks 212. An extrusion block 214 is fixedly installed on the upper end surfaces of the two rubber belts 213. The extrusion block 214 is fixedly connected to the isolation ring 215. When the cotton yarn 216 needs to be replaced, the extrusion block 214 is pushed from the side to slide between the rubber belt 213 and the belt body 1, and it is removed to remove the cotton yarn 216 set in the isolation ring 215. Replacement.

[0040] Reference Figure 3 to Figure 4 A slide groove is provided in the rotating tooth head 205, and a limited slide groove 206 is provided in the slide groove. A telescopic column 208 is slidably installed in the limited slide groove 206. A first spring 207 is fixedly installed between the telescopic column 208 and the rotating tooth head 205. A rotating rod 209 is fixedly installed at the lower end of the telescopic column 208. A ratchet 211 is embedded at the lower end of the support block 204. A rotating rod 209 is fixedly installed on the lower end surface of the telescopic column 208. The rotating rod 209 is slidably connected and engaged with the ratchet 211. A coil spring 210 is fixedly installed between the rotating tooth head 205 and the support block 204. The coil spring 210 is wound to store energy during the rotation of the rotating tooth head 205, and then extends to release energy.

[0041] Reference Figures 5 to 7A lifting groove 301 is provided in the upper part of the belt body 1, and two arc-shaped rods 302 are symmetrically installed on the upper end surface of the belt body 1. Two second springs 306 are symmetrically installed on the inner bottom wall of the lifting groove 301. The upper ends of the two second springs 306 are fixedly installed with an arc-shaped lifting plate 303. Two fixing screws 304 are threadedly installed on the upper end surface of the arc-shaped lifting plate 303. The fixing screws 304 are threadedly connected with the arc-shaped lifting plate 303 to fix one end of the water-soluble paper 305 on the arc-shaped lifting plate 303. At the upper end of the lifting plate 303, a heating box 307 is fixedly installed in the center of the lower end surface of the arc-shaped lifting plate 303, and a heating element 308 is fixedly installed in the heating box 307. A loading box 309 is fixedly installed on the lower end surface of the heating box 307, and a hot-melt material 310 is fixedly installed in the loading box 309. During the heating process of the heating element 308, the heat of the heating element 308 can be transferred to the loading box 309 through the heating box 307. The heating box 307 is made of copper or aluminum, and copper and aluminum have good thermal conductivity. The hot-melt material 310 can be paraffin, which is solid and has a certain hardness before melting. After melting, it is liquid and acts on the loading box 309 under the action of fluidity (the loading box 309 is a soft temperature-resistant material, such as silicone rubber), so that it diffuses to the surroundings under its own elastic conditions to reduce the squeezing force on the lower pressing block 311. When the water-soluble paper 305 needs to be replaced, the broken water-soluble paper 305 can be pulled out by twisting the fixing screw 304, and the water-soluble paper 305 can be pulled out from the arc-shaped The lower end of the lifting plate 303 pushes the arc-shaped lifting plate 303 upward to make it in close contact with the lower end of the arc-shaped rod 302, and the water-soluble paper 305 is passed between the downward pressure disc 312 and the cotton yarn 216. The two ends of the water-soluble paper correspond to the positions of the fixing screws 304 respectively, and the fixing screws 304 are twisted to fix the water-soluble paper 305. Finally, the arc-shaped lifting plate 303 is loosened, and the water-soluble paper 305 will support the arc-shaped lifting plate 303 to prevent the second spring 306 from pulling the arc-shaped lifting plate 303 down.

[0042] Reference Figure 7 Two control devices 320 are symmetrically installed in the belt body 1, and the control device 320 includes a power supply, a controller and a buzzer alarm. Two support blocks 315 are symmetrically installed on both sides of the heating box 307. A lifting column 318 is slidably installed in the support block 315. A lifting plate 316 is fixedly installed on the upper end of the lifting column 318. The lifting plate 316 is electrically connected to the heating element 308. The lifting column 318 consists of a sliding column and a conductive disk. A third spring 317 is fixedly installed between the conductive disk and the support block 315. Two conductive heads 319 are symmetrically installed at the inner bottom end of the lifting groove 301. The conductive head 319 and the conductive disk are electrically connected to the controller, and the controller is electrically connected to the buzzer. The power supply is used to provide electrical energy. The conductive head 319 can supply power to the lifting plate 316 and the heating element 308 through the controller after 10 to 20 minutes of pressing time. The lifting plate 316 is made of copper and can supply power to the heating element 308 during the lifting process.

[0043] Reference Figures 5 to 11 , also includes an adjustment hemostasis component 4, the adjustment hemostasis component 4 includes two slide grooves 401 symmetrically opened on one side of the lifting groove 301, oblique clamping blocks 406 are symmetrically slidably installed in the two slide grooves 401, and two oblique descending blocks 407 are symmetrically installed on the lower end surface of the arc-shaped lifting plate 303. The oblique clamping blocks 406 are driven to contact the oblique descending blocks 407. Two baffles 402 are symmetrically installed on one side of the belt body 1, and a rotating driving member 404 is fixedly installed on one side of one baffle 402. The output end of the rotating driving member 404 passes through the baffle 402 and is fixedly connected to the bidirectional screw 403. The bidirectional screw 403 is rotatably connected to the two baffles 402. The outer wall thread sleeve of the bidirectional screw 403 is provided with two moving blocks 405. Block 405 is fixed to the oblique clamping block 406 at the corresponding position, the rotating drive member 404 is electrically connected to the controller, two baffles 402 are symmetrically installed on one side of the belt body 1, and a rotating drive member 404 is fixedly installed on one side of the two baffles 402, and the output end of the rotating drive member 404 passes through the baffle 402 and is fixedly connected to the bidirectional screw 403, the bidirectional screw 403 is rotatably connected to the two baffles 402, and the outer wall thread sleeve of the bidirectional screw 403 is provided with two moving blocks 405, the two moving blocks 405 are fixed to the two oblique clamping blocks 406, and the rotating drive member 404 is electrically connected to the controller. When the bidirectional screw 403 is driven to rotate, it can drive the two moving blocks 405 to move relative to or opposite to each other.

[0044] Reference Figure 8 A liquid storage chamber 313 is provided in the extrusion block 214, and two inlets and outlets are provided at the upper and lower positions of the outer wall of the isolation ring 215. A herringbone membrane 314 is fixedly installed in the two inlets and outlets. Hemostatic powder and a flow resistor are provided in the liquid storage chamber 313. The flow resistor is electrically connected to the controller. The setting of the herringbone membrane 314 allows blood to flow unidirectionally in the inlet and outlet, and the hemostatic powder is a kind of component containing coagulation promotion, which can stop bleeding quickly. The flow resistor is a device that generates a pressure difference between the inlet and outlet when a fluid flows through the flow resistor. By measuring this pressure difference, the flow rate can be calculated using the fluid dynamics formula.

[0045] The working principle of the present invention is as follows:

[0046] First, stop bleeding at the puncture point: by putting the tourniquet on the patient's arm, aligning the cotton yarn 216 with the puncture point, and twisting the rotating rod 209 to let the telescopic column 208 drive the rotating tooth head 205 to rotate, the rotating rod 209 will continuously contact with the ratchet 211 when rotating. Because the ratchet 211 is provided with oblique teeth, the rotating rod 209 can only rotate in one direction when rotating, and will be blocked by the ratchet 211 when rotating in the opposite direction. At the same time, the rotating tooth head 205 tightens the coil spring 210 during the rotation process, and engages with the tooth groove to drive the lower ends of the two set contraction belts 201 to move in the support block 204. The moving contraction belt 201 will drive the belt body 1 to bend and drive the extrusion block 214 and the isolation ring 215 to press the skin and puncture point close to the puncture point. The patient automatically twists the rotating rod 209 through the diameter of the arm to allow the telescopic column 208 and the rotating tooth head 205 to drive the two contraction belts 201 to move and contract in the support block 204, so that the extrusion block 214 and the isolation ring 215 are close to the skin and puncture point at the puncture point. In the process of the lower ends of the two contraction belts 201 being driven to move, the extrusion belt 202 will be driven to fit and slide with the arm. The set rubber cam 203 will roll when sliding in contact with the arm, allowing the rubber cam 203 to allow the protruding part to deform and contact the patient's arm to increase friction, thereby preventing the patient from being unstable due to various factors when wearing the tourniquet. In this way, it can be worn The tourniquet is used to avoid scratching and displacement, which may cause the cotton yarn 216 to be unable to contact the puncture point. It should be noted that when it is necessary to release it, the rotating rod 209 is pressed to allow the telescopic column 208 to slide in the rotating tooth head 205 and compress the first spring 207. The rotating rod 209 will slide to the top of the ratchet 211, and the wound coil spring 210 will release the winding force to drive the telescopic column 208 and the rotating tooth head 205 to rotate, so that the rotating tooth head 205 drives the contraction belt 201 to move back to the original position;

[0047] Second, for patients with continuous bleeding, a second compression is performed: after the above compression of the puncture point, if the patient's arm continues to bleed, it indicates that the hemostatic effect of the cotton yarn is insufficient. This patient is a dialysis patient, and the blood will penetrate the cotton yarn 216 and the water-soluble paper 305 (the blood will first be absorbed by the bottom cotton yarn 216, forming a part of accumulation in the bottom layer. If the bottom cotton yarn 216 is completely absorbed, the cotton yarn 216 has many fine fibers and pores. When the cotton yarn 216 contacts the blood, the blood will enter the gaps between the fibers through the cotton yarn 216 and flow along these fibers. The water-soluble paper 305 breaks at the cotton yarn 216, and the broken water-soluble paper 305 loses the support for the arc-shaped lifting plate 303. The stretched spring contracts and drives the arc-shaped lifting plate 303 to descend in the lifting slot 301. The arc-shaped lifting plate 303 drives the heating box 307 and the loading box 309 to descend together during the descent, and squeezes the lower pressing block 311. The squeezed lower pressing block 311 drives the lower pressing disc 312 to squeeze the cotton yarn 216, so that the cotton yarn 216 continues to apply pressure to the puncture point. Squeeze to stop bleeding. When the heating box 307 descends, the support block 315 is driven to descend. The descending support block 315 drives the lifting column 318 to descend and contact the conductive head 319. The lifting column 318 is energized with the conductive head 319, and slides up in the support block 315 to compress the third spring 317. The energized lifting column 318 supplies power to the heating element 308 through the lifting plate 316 (in this process, the pressure on the pinhole puncture point of the dialysis patient generally needs to last for about 10 to 20 minutes, which is enough to help stop bleeding and prevent bleeding. Blood will occur again, so when the lifting column 318 supplies power to the heating element 308 through the lifting plate 316, the controller controls the lifting plate 316 to delay 10 to 20 minutes before supplying power to the heating element 308), the heating element 308 will heat up, and the heat of the heating will be transferred to the loading box 309 and melt the hot-melt material 310, so that the solid hot-melt material 310 will melt into liquid, and the hot-melt material 310 melted into liquid will lose the squeezing force on the lower pressing block 311, so that the second squeezing pressure will gradually decrease and disappear as the hot-melt material 310 melts;

[0048] Third, treatment is provided for patients with excessive bleeding: when the pressing block 311 and the pressing disc 312 are driven downward to squeeze the cotton yarn 216, the blood that penetrates into the cotton yarn 216 will flow from the herringbone membrane 314 above into the liquid storage chamber 313 and mix with the hemostatic powder (this is because the fiber structure of the cotton yarn 216 can attract and guide the diffusion of the liquid until the fibers inside the entire cotton yarn 216 are saturated), and when an excessive amount of blood flows into the liquid storage chamber 313, it will be detected by the flow resistor, and the flow resistor will use this to determine that the amount of bleeding is too large. The flow resistor will control the rotating drive member 404 to drive the bidirectional screw 403 to rotate and transmit a signal to let the buzzer alarm sound an alarm, reminding that the amount of bleeding is too large (in many cases, continuous and appropriate pressure can still effectively control bleeding. Pressure can help coagulation and reduce blood loss. If the amount of bleeding is too large, pressure may cause Other problems: Strong pressing may cause local congestion of blood, thereby aggravating bleeding. Excessive pressure may damage blood vessels or surrounding tissues, causing aggravated bleeding. At this time, the patient's puncture point cannot be pressed for a second time to stop bleeding). The rotating bidirectional screw 403 will drive the moving block 405 and the oblique clamping block 406 to slide in the slide groove 401, and contact the oblique descending block 407, lifting the oblique descending block 407 and the arc-shaped lifting plate 303. The upwardly lifted arc-shaped lifting plate 303 will drive the heating box 307 and the loading box 309 to move upward, reducing the squeezing of the lower pressing block 311, and the compressed cotton yarn 216 will expand again, and the blood mixed with the hemostatic powder will be re-absorbed into the cotton yarn 216 from the herringbone membrane 314 opened at the bottom. The hemostatic powder will stop bleeding at the puncture point below the cotton yarn 216, and the buzzer alarm will alert the medical staff to treat the puncture point.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dialysis tourniquet with automatically adjusted pressing force, characterized in that: include: Belt body (1); A tightening and pressing mechanism (2), the tightening and pressing mechanism (2) comprising an isolating ring (215), cotton yarn (216) being fixedly installed inside the isolating ring (215), and the tightening and pressing mechanism (2) is used to tighten the belt body (1) so that the cotton yarn (216) presses the puncture point; The secondary pressing mechanism (3) comprises a pressing block (311), a notch is provided in the middle of the belt body (1), the pressing block (311) is slidably connected to the notch, a pressing disc (312) is fixedly mounted on the lower end surface of the pressing block (311), a water-soluble paper (305) is provided between the pressing disc (312) and the cotton yarn (216), the water-soluble paper (305) is in a tight state to support the pressing block (311), when a large amount of bleeding occurs at the puncture point, the blood melts the water-soluble paper (305), the pressing block (311) loses the supporting force of the pressing block (311) and descends to apply secondary pressure to the puncture point to stop bleeding.

2. A dialysis tourniquet with automatically adjusted pressing force according to claim 1, characterized in that: Two shrinking belts (201) are symmetrically mounted at the lower end of the belt body (1). The two shrinking belts (201) are of arc-shaped structure and have tooth grooves at the lower position. Support blocks (204) are slidably mounted on the outer sides of the lower ends of the two shrinking belts (201). A rotating tooth head (205) is rotatably mounted inside the support block (204). The rotating tooth head (205) is meshed with the tooth grooves. Two pairs of connecting blocks (212) are symmetrically mounted on both sides of the belt body (1). A rubber belt (213) is fixedly mounted between each pair of connecting blocks (212). An extrusion block (214) is fixedly mounted on the upper end surfaces of the two rubber belts (213). The extrusion block (214) is fixedly connected to an isolation ring (215).

3. A dialysis tourniquet with automatically adjusted pressing force according to claim 2, characterized in that: A slide groove is provided in the rotating tooth head (205), a limit slide groove (206) is provided in the slide groove, a telescopic column (208) is slidably installed in the limit slide groove (206), a first spring (207) is fixedly installed between the telescopic column (208) and the rotating tooth head (205), a rotating rod (209) is fixedly installed at the lower end of the telescopic column (208), a ratchet (211) is embedded at the lower end of the support block (204), a rotating rod (209) is fixedly installed on the lower end surface of the telescopic column (208), the rotating rod (209) and the ratchet (211) are slidably connected and engaged, and a coil spring (210) is fixedly installed between the rotating tooth head (205) and the support block (204).

4. A dialysis tourniquet with automatically adjusted pressing force according to claim 1, characterized in that: A lifting groove (301) is provided in the upper part of the belt body (1), two arc-shaped rods (302) are symmetrically installed on the upper end surface of the belt body (1), two second springs (306) are symmetrically installed on the inner bottom wall of the lifting groove (301), an arc-shaped lifting plate (303) is fixedly installed on the upper ends of the two second springs (306), and two fixing screws (304) are threadedly installed on the upper end surface of the arc-shaped lifting plate (303), and the fixing screws (304) are threadedly installed on the upper end surface of the arc-shaped lifting plate (303). 4) One end of the water-soluble paper (305) is fixed to the upper end of the arc-shaped lifting plate (303) by threaded connection with the arc-shaped lifting plate (303); a heating box (307) is fixedly installed at the center of the lower end surface of the arc-shaped lifting plate (303); a heating element (308) is fixedly installed in the heating box (307); a loading box (309) is fixedly installed on the lower end surface of the heating box (307); and a hot-melt material (310) is fixedly installed in the loading box (309).

5. A dialysis tourniquet with automatically adjusted pressing force according to claim 4, characterized in that: Two control devices (320) are symmetrically installed in the belt body (1), and the control devices (320) include a power supply, a controller and a buzzer alarm. Two support blocks (315) are symmetrically installed on both sides of the heating box (307). A lifting column (318) is slidably installed in the support block (315). A lifting plate (316) is fixedly installed on the upper end of the lifting column (318). The lifting plate (316) is electrically connected to the heating element (308). The lifting column (318) consists of a sliding column and a conductive disk. A third spring (317) is fixedly installed between the conductive disk and the support block (315). Two conductive heads (319) are symmetrically installed at the inner bottom end of the lifting slot (301). The conductive head (319) and the conductive disk are electrically connected to the controller, and the controller is electrically connected to the buzzer. The power supply is used to provide electrical energy.

6. A dialysis tourniquet with automatically adjusted pressing force according to claim 4, characterized in that: It also includes an adjusting hemostasis component (4), the adjusting hemostasis component (4) including two slide grooves (401) symmetrically opened on one side of the lifting groove (301), oblique clamping blocks (406) symmetrically slidably installed in the two slide grooves (401), and two oblique descending blocks (407) symmetrically installed on the lower end surface of the arc-shaped lifting plate (303), and the oblique clamping blocks (406) are driven to contact the oblique descending blocks (407).

7. A dialysis tourniquet with automatically adjusted pressing force according to claim 6, characterized in that: Two baffles (402) are symmetrically installed on one side of the belt body (1), and a rotating driving member (404) is fixedly installed on one side of one of the baffles (402). The output end of the rotating driving member (404) passes through the baffle (402) and is fixedly connected to a bidirectional screw (403). The bidirectional screw (403) is rotationally connected to the two baffles (402). Two moving blocks (405) are threadedly sleeved on the outer wall of the bidirectional screw (403). The moving blocks (405) are fixed to oblique clamping blocks (406) at corresponding positions, and the rotating driving member (404) is electrically connected to a controller.

8. A dialysis tourniquet with automatically adjusted pressing force according to claim 2, characterized in that: A liquid storage chamber (313) is provided in the extrusion block (214), and two inlets and outlets are provided at upper and lower positions of the outer wall of the isolation ring (215), and a herringbone membrane (314) is fixedly installed in the two inlets and outlets. Hemostatic powder and a flow resistor are provided in the liquid storage chamber (313), and the flow resistor is electrically connected to the controller.

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