A hemodialysis tourniquet

Abstract

The utility model belongs to the field of medical supplies, especially a hemodialysis tourniquet. The technology includes the horizontal setting's pressing plate, the left and right two side walls of pressing plate articulate have the side plate that can swing up and down, be provided with locking assembly for locking the side plate after swinging angle between each side plate and pressing plate, the side wall of each side plate is detachable fixed with the locating block towards the skin, the elastic bandage of adjustable tightness is connected between two side plates, the bottom of pressing plate is detachable fixed with the hemostatic pad. When two locating blocks are close to the skin of patient, two locating blocks position the pressing plate through the friction of itself, prevent the hemostatic pad from being dislocated with puncture due to the movement of pressing plate, make the hemostatic pad be able to accurate and stable compression hemostasis to puncture.

Description

Technical Field

[0001] This utility model belongs to the field of medical supplies, and in particular relates to a tourniquet for hemodialysis. Background Technology

[0002] Hemodialysis is one of the renal replacement therapies for patients with acute and chronic renal failure. It involves draining blood from the body and passing it through a dialyzer composed of numerous hollow fibers. The blood exchanges substances with an electrolyte solution (dialysis fluid) containing a concentration similar to that of the body through diffusion and convection within and outside the hollow fibers, removing metabolic waste, maintaining electrolyte and acid-base balance, and removing excess water. The purified blood is then returned to the body. The entire process is called hemodialysis. Appropriate pressure for hemostasis after a hemodialysis puncture is crucial. Traditional hemodialysis tourniquets are elastic bandages with snaps or Velcro at both ends, using gauze pads to apply pressure to the wound for hemostasis. However, existing tourniquets are prone to slipping when the gauze pad is placed under the tourniquet, causing displacement of the pressure point and insufficient local pressure, leading to bleeding at the puncture site. To prevent gauze slippage and achieve hemostasis, the tourniquet needs to be tightened excessively, but an overly tight tourniquet can hinder blood circulation in the hand. Utility Model Content

[0003] The purpose of this invention is to provide a tourniquet for hemodialysis that can provide precise and stable pressure to stop bleeding at the puncture wound.

[0004] The hemodialysis tourniquet includes a horizontally arranged pressure plate, with side plates hinged to the left and right side walls of the pressure plate that can swing up and down. Each side plate is connected to the pressure plate with a locking component for locking the side plate after swinging. A positioning block is detachably fixed to the side wall of each side plate facing the skin. An elastic bandage with adjustable tightness is connected between two side plates. A hemostatic pad is detachably fixed to the bottom of the pressure plate.

[0005] Furthermore, connecting blocks are fixed on the two side plates, and openings for engaging the connecting blocks are provided on the left and right side walls of the pressure plate. A pivot is horizontally fixed on the rear side wall of each connecting block, and a mounting hole for inserting the pivot is provided on the rear side wall of each opening.

[0006] Furthermore, the locking assembly includes two positioning rods. Two through holes are opened on the front side wall of the pressure plate, which are respectively connected to the openings on the left and right sides. Corresponding to the two through holes, insertion holes are opened on the front side walls of the two connecting blocks. One end of each positioning rod passes through the two through holes and is independently installed in the two insertion holes. Several evenly distributed slots are opened on the wall of each through hole and each insertion hole along the circumferential direction. Several evenly distributed locking strips are fixed on the rod body of the two positioning rods along the circumferential direction, which are used to engage in the corresponding slots.

[0007] Furthermore, the pressure plate and the two side plates have anti-slip textures on their sidewalls facing away from the skin.

[0008] Furthermore, positioning grooves for engaging the positioning blocks are provided on the sidewalls of the two side plates facing the skin.

[0009] Furthermore, the positioning block is made of an elastic material.

[0010] Furthermore, the hemostatic pad has an arc-shaped structure.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] When the two positioning blocks are in close contact with the patient's skin, they use their own friction to position the pressure plate, preventing misalignment of the hemostatic pad and puncture site due to pressure plate movement. This allows the hemostatic pad to accurately and stably compress the puncture site for hemostasis. Furthermore, when the elastic bandage is wrapped around the arm and its tightness is adjusted, the two positioning blocks use friction to limit the skin in the area between the two, preventing the elastic bandage from pulling the skin to the sides during wear or adjustment, which could cause the skin at the puncture site to become too tight and tear the wound, resulting in bleeding. The tourniquet can be reused after the hemostatic pad and positioning blocks are replaced and the area is cleaned and disinfected. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 for Figure 1 Sectional view at point AA;

[0015] Figure 3 This is a perspective view of the present utility model;

[0016] Figure 4 This is a perspective view of the back of the pressure plate and side plate of this utility model;

[0017] Figure 5 This is an exploded view of the present invention;

[0018] Figure 6 for Figure 5 Enlarged view of region a in the middle;

[0019] The components shown in the diagram are as follows: 1. Side plate; 2. Connecting block; 3. Pressure plate; 4. Hemostatic pad; 5. Positioning block; 6. Elastic bandage; 7. Positioning rod; 8. Locking strip. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0021] Example

[0022] The hemodialysis tourniquet described in this embodiment, such as Figure 1 , Figure 2 and Figure 5 As shown, the device includes a horizontally positioned pressure plate 3. Side plates 1, which can swing up and down, are hinged to the left and right side walls of the pressure plate 3. Connecting blocks 2 are fixed to the side walls of the two side plates 1 facing the pressure plate 3. Openings for engaging the connecting blocks 2 are provided on the left and right side walls of the pressure plate 3. A pivot is horizontally fixed to the rear side wall of each connecting block 2. Mounting holes for inserting the pivots are provided on the rear side wall of each opening, allowing the two side plates 1 to swing around the hinge point. Because the arm thickness of patients with different body types varies, the angle of the two side plates 1 can be adjusted to accommodate different arm thicknesses.

[0023] To elaborate further, such as Figure 2 and Figure 6 As shown, this embodiment preferably includes two positioning rods 7. Two through holes are opened on the front side wall of the pressure plate 3, each communicating with an opening on the left or right side. Corresponding to the two through holes, insertion holes are opened on the front side walls of the two connecting blocks 2. One end of each positioning rod 7 passes through the two through holes and is independently inserted into the two insertion holes. Several evenly distributed slots are opened along the circumferential direction on the wall of each through hole and each insertion hole. Several evenly distributed locking strips 8 are fixed along the circumferential direction on the rods of the two positioning rods 7, each used to engage with the corresponding slot. In use, when the side plate 1 swings, it will cause the connecting block 2 fixed to it to rotate. After the side plate 1 stops swinging, the slots in the insertion holes will align with the slots in the through holes. Then, one end of the positioning rod 7 is inserted into the through hole, and the locking strips 8 on the positioning rod 7 are respectively engaged with... The positioning rod 7 continues to be inserted into the slot on the through hole, so that one end of the positioning rod 7 is inserted into the insertion hole. The locking strips 8 on the positioning rod 7 are respectively engaged in the slots of the insertion hole that are aligned with it. Thus, the connecting block 2 is locked by the cooperation of the locking strips 8 and the slots, and the side plate 1 after swinging angle is locked. The whole solution constitutes a locking assembly for locking the side plate 1 after swinging angle. Of course, the locking assembly can also use a stop bar. A limiting groove for engaging one end of the stop bar is opened on the front side wall of the pressure plate 3. Several positioning grooves are evenly opened on the front side wall of the side plate 1 along the circumferential direction with the hinge point as the center. When the side plate 1 swings to a suitable angle, one end of the stop bar is engaged in the positioning groove that is aligned with it, and the other end of the stop bar is locked in the limiting groove by screws, thereby locking the side plate 1 after swinging angle.

[0024] Anti-slip textures are provided on the sidewalls of the pressure plate 3 and the two side plates 1 facing away from the skin. The anti-slip textures can increase the friction between the fingers and the pressure plate 3 and the side plates 1, preventing the fingers from slipping during operation.

[0025] Each side plate 1 has a detachable positioning block 5 fixed to its skin-facing sidewall. Positioning grooves for engaging the positioning block 5 are formed on the skin-facing sidewalls of both side plates 1. In this embodiment, a portion of the positioning block 5 engages within the positioning groove, which positions the positioning block 5 and prevents it from shifting due to pressure during use. The positioning block 5 is fixed in the positioning groove with medical adhesive, or it can be fixed to the side plate 1 with screws. When using screws, countersunk holes need to be made in the positioning block 5 to prevent the screws from scratching the skin. The detachable fixing of the positioning block 5 allows for easy replacement of any failed or damaged positioning blocks.

[0026] The positioning block 5 is made of rubber, polyurethane, silicone and other materials. These materials have good friction, are relatively soft and have good elasticity. When the positioning block 5 comes into contact with the skin, it can position the pressure plate 3 through friction, preventing the hemostatic pad 4 from moving or misaligning with the hemodialysis puncture site, so that the hemostatic pad 4 can accurately and stably compress the puncture site to stop bleeding.

[0027] An adjustable elastic bandage 6 connects the two side panels 1, such as... Figure 1 , Figure 3 and Figure 5 As shown, in this embodiment, the elastic bandage 6 is an elastic band, which consists of two sections. One end of each section is fixed to one of the two side plates 1, and the other end is connected by Velcro. To adjust the tightness of the elastic bandage 6, simply change the attachment position of the hook and loop sides of the Velcro. Alternatively, the elastic bandage 6 can use snap fasteners. Multiple snap fasteners can be installed at one end of the elastic bandage 6, and the tightness of the elastic bandage 6 can be adjusted by changing the engagement of different snap fasteners with the female fastener.

[0028] A hemostatic pad 4 is detachably fixed to the bottom of the pressure plate 3. In this embodiment, the hemostatic pad 4 is fixed to the center of the bottom of the pressure plate 3 by a medical film to facilitate replacement of the hemostatic pad 4. By replacing the hemostatic pad 4, this hemodialysis tourniquet can be reused. Figure 1 As shown, the hemostatic pad 4 has an arc-shaped structure, and its flat surface is fixed to the bottom of the pressure plate 3 by a medical film. The hemostatic pad 4 is made of medical cotton. In use, the arc apex of the hemostatic pad 4 is aligned with the hemodialysis puncture site. When the hemostatic pad 4 presses on the puncture site, due to the characteristics of the arc-shaped structure, most of the pressure of the hemostatic pad 4 can be concentrated on the area of ​​the puncture site, thereby improving the effect of pressure hemostasis.

[0029] In actual use, the angle of the two side plates 1 is adjusted according to the thickness of the patient's arm. Then, the two positioning rods 7 are inserted into the through holes to lock the angle of the two side plates 1 after they have been swung. When the puncture needle is withdrawn, the hemostatic pad 4 is aligned with the puncture site, and the pressure plate 3 is pressed down so that the hemostatic pad 4 presses against the puncture site. The positioning blocks 5 on both side plates 1 are then placed tightly against the skin at a distance from the wound on both sides. Finally, the elastic bandage 6 is wrapped around the patient's arm, and the tightness of the elastic bandage 6 is adjusted according to the actual pressure of the hemostatic pad 4. When the two positioning blocks 5 are in close contact with the patient's skin, they position the pressure plate 3 through their own friction, preventing the hemostatic pad 4 from being misaligned with the puncture site due to the movement of the pressure plate 3. This allows the hemostatic pad 4 to accurately and stably compress the puncture site for hemostasis. Furthermore, when the elastic bandage 6 is wrapped around the arm and its tightness is adjusted, the two positioning blocks 5 can limit the skin in the area between them through friction, preventing the elastic bandage 6 from pulling the skin to both sides during wearing or adjustment, which would cause the skin at the puncture site to become tight and cause the wound to tear and bleed.

Claims

1. A tourniquet for hemodialysis, comprising a horizontally arranged pressure plate (3), characterized in that: The pressure plate (3) has side plates (1) that can swing up and down on the left and right side walls. Each side plate (1) is connected to the pressure plate (3) with a locking component for locking the side plate (1) after swinging. Each side plate (1) has a positioning block (5) that can be detachably fixed on the side wall facing the skin. An elastic bandage (6) with adjustable tightness is connected between two side plates (1). A hemostatic pad (4) is detachably fixed at the bottom of the pressure plate (3).

2. The tourniquet for hemodialysis according to claim 1, characterized in that: Two side plates (1) are fixed with connecting blocks (2), and openings for engaging the connecting blocks (2) are provided on the left and right side walls of the pressure plate (3). A pivot is horizontally fixed on the rear side wall of each connecting block (2), and a mounting hole for inserting the pivot is provided on the rear side wall of each opening.

3. The tourniquet for hemodialysis according to claim 2, characterized in that: The locking assembly includes two positioning rods (7). Two through holes are opened on the front side wall of the pressure plate (3) and communicate with the openings on the left and right sides respectively. Corresponding to the two through holes, insertion holes are opened on the front side walls of the two connecting blocks (2). One end of the two positioning rods (7) passes through the two through holes and is independently installed in the two insertion holes. Several evenly distributed slots are opened on the wall of each through hole and each insertion hole along the circumferential direction. Several evenly distributed locking strips (8) are fixed on the rod body of the two positioning rods (7) along the circumferential direction and are used to engage in the corresponding slots respectively.

4. The hemodialysis tourniquet according to claim 1, characterized in that: The pressure plate (3) and the two side plates (1) have anti-slip textures on their sidewalls facing away from the skin.

5. The tourniquet for hemodialysis according to claim 4, characterized in that: The two side plates (1) have positioning grooves on their sidewalls facing the skin for engaging the positioning block (5).

6. The tourniquet for hemodialysis according to claim 1, characterized in that: The positioning block (5) is made of an elastic material.

7. The hemodialysis tourniquet according to claim 1, characterized in that: The hemostatic pad (4) has an arc-shaped structure.

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