An adjustable arteriovenous fistula compression tourniquet
By setting the adjustment base and knob on the pulse pressure band, the problem of difficulty in adjusting the tension of the pulse pressure band with one hand is solved, and moderate compression and hemostasis of the internal fistula is achieved, avoiding the occlusion or bleeding of the internal fistula caused by excessive compression or improper loosening.
Patent Information
- Application Number
- CN202421245897.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-06-03
AI Technical Summary
During the compression and stopping of bleeding, it is difficult for one hand to adjust its tension, resulting in the fistula that may be blocked due to excessive compression or bleeding due to improper relaxation.
An adjustable arteriovenous fistula compression tourniquet is designed. By setting an adjustment matrix between the two ends of the elastic bandage, a reel and a knob are provided on the adjustment matrix. The adjustment matrix is achieved by combining wire drawing and glue strips to achieve adjustable tension of the elastic bandage.
Patients can use one-handed knob to moderately adjust the tightness of the elastic bandage to avoid occlusion of the fistula due to excessive compression and to avoid bleeding problems caused by improper loosening.
Smart Images
Figure CN222737941U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of compression hemostasis devices, in particular to an adjustable arteriovenous fistula compression tourniquet. Background Art
[0002] Arteriovenous fistula is the main dialysis pathway built between arteries and veins. Compression and hemostasis at the fistula is very important after dialysis treatment.
[0003] At present, most of the pulse cuffs used in clinical practice are elastic bandages. Although they are easy to operate, they still have many problems. For example, the pulse cuff needs to be loosened after 20 minutes to prevent excessive compression and prolonged time, which may lead to occlusion of the fistula. It is not easy for the patient to operate with one hand, and improper loosening may cause bleeding and swelling of the fistula, affecting the next dialysis treatment.
[0004] Therefore, there is a need to provide an adjustable arteriovenous fistula compression tourniquet to solve the problem that the compression force of the pulse pressure tourniquet in the prior art is not easy to adjust with one hand. Utility Model Content
[0005] The utility model aims to provide an adjustable arteriovenous fistula compression tourniquet to solve the technical problems raised in the above-mentioned background technology.
[0006] In order to solve the above technical problems, the utility model specifically provides the following technical solutions:
[0007] The utility model provides an adjustable arteriovenous fistula compression tourniquet, comprising: an elastic bandage, on which is provided a rubber strip covering the end section thereof, on which are respectively provided a drawing wire, and when the drawing wire is subjected to tension, the elastic bandage is tensioned; an adjusting base, which is arranged between the two ends of the elastic bandage, a shaft-connected reel is arranged in the middle of the adjusting base, the drawing wire passes through the adjusting base and is wound on the reel, and a knob for controlling the rotation of the reel is arranged at one end of the reel protruding from the adjusting base; wherein a limiting hole is arranged on the annular surface of the knob close to one side of the adjusting base, a limiting convex column matched with the limiting hole is arranged on the adjusting base, and when the limiting hole and the limiting convex column are matched, a circumferential limit is formed on the knob; a plurality of limiting holes are equidistantly arranged on the knob in the circumferential direction, and one limiting convex column is arranged; the reel is a telescopic shaft, so that the knob can move along the axial direction of the reel.
[0008] Furthermore, a spring is sleeved on the reel, and the spring is used to lift the knob to a limited position when the knob is pulled out.
[0009] Furthermore, through holes with overlapping axes are respectively penetrated through the opposite side walls of the adjusting base, and the two drawing wires are respectively inserted into the adjusting base through the through holes to be wound on the reel.
[0010] Furthermore, a deformation cavity with a flexible plate as the bottom is provided inside the adjusting base, and when the flexible plate is under pressure, it can bend toward the deformation cavity to form an arched structure that can fit the human limbs; wherein, a spacing is left between the flexible plate and the end of the scroll, and an annular flange is provided inside the adjusting base for supporting and fixing the end of the scroll.
[0011] Furthermore, an arc-shaped clamping plate is provided at the bottom of the adjusting base, and the arc-shaped clamping plate is used for clamping the cotton roller.
[0012] Furthermore, a rubber head matching with the rubber strip is provided at the end of the wire drawing; wherein grooves are provided through both sides of the rubber strip, and ridges are provided on the inner side of the rubber head, and the rubber strip and the rubber head are movably connected through the grooves and ridges.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] The utility model provides an adjustment base for adjusting the tightness of the elastic bandage between the two free ends thereof, so that after the patient uses the device to compress and stop bleeding for a period of time, the elastic bandages on both sides can be loosened appropriately by operating the knob on the adjustment base with one hand. In this way, the problem that the elastic bandage is difficult to adjust the tension and compression degree of the fistula with one hand after the patient undergoes dialysis treatment can be avoided, thereby preventing the fistula from being occluded due to excessive compression and prolonged time at the fistula of the patient's limb. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.
[0016] Figure 1 A three-dimensional structural diagram of an adjustable arteriovenous fistula compression tourniquet provided by the utility model;
[0017] Figure 2 for Figure 1 The main cross-section of
[0018] Figure 3 for Figure 2 Enlarged view of middle Ⅰ;
[0019] Figure 4 for Figure 2 Ⅰ is a partial view of another embodiment of the utility model;
[0020] Figure 5 for Figure 2 Enlarged view of middle II.
[0021] Figure 6 for Figure 2 Figure Ⅱ is a partial view of another embodiment of the present invention.
[0022] The numbers in the figure represent the following:
[0023] 10. Elastic bandage; 11. Rubber strip; 111. Groove; 12. Wire drawing; 13. Rubber head; 131. Raised ridge; 20. Adjustment base; 21. Reel; 22. Knob; 221. Limiting hole; 222. Limiting convex column; 23. Spring; 24. Through hole; 25. Flexible plate; 26. Annular flange; 27. Arc splint; 30. Cotton roller. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] like Figure 1-2 As shown, the utility model provides an adjustable arteriovenous fistula compression tourniquet, comprising:
[0026] An elastic bandage 10 is provided with a rubber strip 11 covering the end section thereof, and the rubber strip 11 is provided with a drawing wire 12, and the drawing wire 12 makes the elastic bandage 10 tighten when a tension is applied;
[0027] The adjusting base 20 is arranged between the two ends of the elastic bandage 10. A shaft-connected reel 21 is arranged in the middle of the adjusting base 20. The wire drawing 12 passes through the adjusting base 20 and is wound on the reel 21. A knob 22 for controlling the rotation of the reel 21 is arranged at one end of the reel 21 protruding from the adjusting base 20.
[0028] Among them, a limiting hole 221 is provided on the annular surface of the knob 22 close to the adjusting base 20, and a limiting boss 222 matching with the limiting hole 221 is provided on the adjusting base 20. When the limiting hole 221 and the limiting boss 222 match, a circumferential limit is formed on the knob 22; a plurality of limiting holes 221 are equidistantly arranged circumferentially on the knob 22, and one limiting boss 222 is provided; the scroll 21 is a telescopic shaft so that the knob 22 can move axially along the scroll 21.
[0029] The utility model provides an adjustment base 20 for adjusting the tightness of the elastic bandage 10 between the two free ends thereof, so that after the patient uses the device for compression and hemostasis for a period of time, the elastic bandage 10 on both sides can be appropriately loosened by only operating the knob 22 on the adjustment base 20 with one hand. By the patient's active and appropriate loosening of the elastic bandage 10, the problem that the elastic bandage 10 is difficult to adjust the tension and compression degree of the arteriovenous fistula with one hand during the compression and hemostasis of the arteriovenous fistula after dialysis treatment can be avoided. Thus, the problem of excessive compression and prolonged compression of the arteriovenous fistula of the patient's limbs, which leads to the occlusion of the arteriovenous fistula, can be avoided. The device provided by the utility model is not only conducive to the medical staff using the elastic bandage 10 to tighten the arteriovenous fistula after the patient's dialysis treatment, but also conducive to the patient's active loosening of the elastic bandage 10 to a certain extent according to the doctor's advice after the hemostasis for a period of time, so as to avoid the problem of arteriovenous fistula bleeding caused by improper loosening of the patient's hand.
[0030] Specifically, the width of the elastic bandage 10 in the tourniquet provided by the utility model is 3 cm, so that the pressure applied by the elastic bandage 10 can be evenly distributed on the fistula on the patient's limbs, and it will not be over-tightened due to the elastic bandage 10 being too narrow. After the patient undergoes dialysis treatment, the medical staff first presses the hemostatic cotton block on the fistula bleeding on the patient's limbs, and then another medical staff expands the elastic bandage 10 in the device into a larger ring body and tightens it to the patient's limbs, so that the bottom of the adjustment base 20 can just press the hemostatic cotton block. The medical staff continues to manually press the adjustment base 20 to compress the fistula with the hemostatic cotton block, and then rotates the adjustment knob 22 on the adjustment base 20 in a positive direction to make the elastic bandage 10 more and more tightened, until the patient feels a sense of urgency around the limbs, and then presses the adjustment knob 22 so that the limiting hole 221 on it is buckled onto the limiting convex column 222 to achieve circumferential limiting. Then, after the hemostasis has been performed for a corresponding period of time, the patient can pull out the knob 22 with one hand to release the limit on the adjustment base 20, and at the same time hold the knob 22 tightly to prevent it from being quickly relaxed by the tension of the elastic bandage 10. At this time, the patient can actively release the knob 22 to rotate it in the opposite direction to slowly loosen the elastic bandage 10, and when the predetermined loosening degree is reached, the knob 22 is pressed again to use the limit projection 222 to form a limit again.
[0031] It should be noted that, in order to visualize the degree of loosening of the elastic bandage 10, an angle scale corresponding to the interval angle between the limiting holes 221 can be set on the knob 22, so as to facilitate observation of the angle through which the knob 22 is turned. For example, if the interval angle between adjacent limiting holes 221 is 30°, then a corresponding angle scale is marked on one side of the circular surface of the knob 22, so that the patient can judge the degree of loosening of the elastic bandage 10 by observing the angle through which the knob 22 is turned, and bleeding is not caused by excessive loosening.
[0032] In the above embodiment, after the knob 22 is released from the limit, it is easy to form axial slippage because it is connected to the inside of the adjustment base 20 through the telescopic shaft, which makes it difficult to rotate the knob 22.
[0033] To solve the above problems, please continue to refer to Figure 2-3 As shown, in the preferred embodiment provided by the utility model based on the above embodiment, a spring 23 is sleeved on the reel 21, and the spring 23 is used to lift and limit the knob 22 when it is pulled out.
[0034] In this embodiment, the spring 23 is provided so that the knob 22 can be limited in its axial direction by the elastic force of the spring 23 after being released from the limit, which is beneficial to the rotation of the knob 22 .
[0035] In order to enable the drawing wire 12 to be pulled along the middle position of the elastic bandage 10, as Figure 1-3 As shown, in a preferred embodiment provided by the utility model based on the above embodiment, through holes 24 with overlapping axes are respectively penetrated on opposite side walls of the adjusting base 20, and two drawing wires 12 are respectively inserted into the adjusting base 20 through the through holes 24 to be wound on the reel 21. In this embodiment, through the through holes 24 mirror-set on opposite side walls of the adjusting base 20, the elastic bandage 10 can be in a straight stretched state when being pulled by the drawing wires 12.
[0036] In order to make the bottom of the adjustment base 20 fit the curvature of the human body, Figure 4 As shown, in the preferred embodiment provided by the utility model based on the above embodiment, a deformation cavity with a flexible plate 25 as the bottom is provided inside the adjusting base 20, and the flexible plate 25 can bend toward the deformation cavity when under pressure to form an arched structure that can fit the human body;
[0037] There is a gap between the flexible plate 25 and the end of the reel 21 , and an annular flange 26 is provided inside the adjusting base 20 for supporting and fixing the end of the reel 21 .
[0038] In this embodiment, by providing the flexible plate 25, the bottom of the adjustment base 20 can be deformed when under pressure, so as to adapt to the curvature of the patient's limbs and play a better compression role.
[0039] In order to pre-fix the hemostatic cotton on the adjustment base 20 to stop bleeding, please continue to refer to Figure 1 As shown, in a preferred embodiment of the present invention provided based on the above embodiments, an arc-shaped clamping plate 27 is provided at the bottom of the adjusting base 20 , and the arc-shaped clamping plate 27 is used to clamp the cotton roller 30 .
[0040] In order to adapt to the different limb morphologies of patients, please refer to Figure 6As shown, in the preferred embodiment provided by the utility model based on the above embodiment, the end of the drawing wire 12 is provided with a rubber head 13 matched with the rubber strip 11;
[0041] Grooves 111 are formed on both sides of the rubber strip 11 , and ridges 131 are formed on the inner side of the rubber head 13 . The rubber strip 11 and the rubber head 13 are movably connected through the grooves 111 and the ridges 131 .
[0042] In this embodiment, by cooperating with the rubber strip 11 and the rubber head 13, after the adjustment base 20 is pre-pressed onto the patient's internal fistula, the free end of the elastic bandage 10 can be stretched to make it tight and then plugged into the rubber head 13 using the rubber strip 11, which is convenient for use on patients with different limb morphologies.
[0043] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.
Claims
1. An adjustable arteriovenous fistula compression tourniquet, characterized in that: include: An elastic bandage (10) is provided with a rubber strip (11) covering the end section thereof, and the rubber strip (11) is provided with a drawing wire (12) respectively, and the drawing wire (12) makes the elastic bandage (10) tight when subjected to tension; An adjusting base (20) is arranged between the two ends of the elastic bandage (10), a shaft-connected reel (21) is arranged in the middle of the adjusting base (20), the wire drawing (12) passes through the adjusting base (20) and is wound on the reel (21), and a knob (22) for controlling the rotation of the reel (21) is arranged at one end of the reel (21) protruding from the adjusting base (20); A limiting hole (221) is provided on the annular surface of the knob (22) on one side close to the adjusting base (20), and a limiting convex column (222) matching with the limiting hole (221) is provided on the adjusting base (20), and when the limiting hole (221) and the limiting convex column (222) match, a circumferential limit is formed on the knob (22); A plurality of the limiting holes (221) are equidistantly arranged on the knob (22) in the circumferential direction, and one limiting boss (222) is provided; The reel (21) is a retractable shaft, so that the knob (22) can move axially along the reel (21).
2. The adjustable arteriovenous fistula compression tourniquet according to claim 1, characterized in that: The reel (21) is sleeved with a spring (23), and the spring (23) is used to lift and limit the knob (22) when it is pulled out.
3. The adjustable arteriovenous fistula compression tourniquet according to claim 2, characterized in that: Through holes (24) with overlapping axes are respectively passed through opposite side walls of the adjusting base (20), and the two drawing wires (12) are respectively passed through the through holes (24) into the adjusting base (20) to be wound on the reel (21).
4. The adjustable arteriovenous fistula compression tourniquet according to claim 3, characterized in that: The adjusting base (20) is provided with a deformation cavity with a flexible plate (25) as the bottom inside, and the flexible plate (25) can bend toward the deformation cavity when under pressure to form an arched structure that can fit a human limb; There is a distance between the flexible plate (25) and the end of the reel (21), and an annular flange (26) is provided inside the adjustment base (20) for supporting and fixing the end of the reel (21).
5. The adjustable arteriovenous fistula compression tourniquet according to claim 4, characterized in that: The bottom of the adjusting base (20) is provided with an arc-shaped clamping plate (27), and the arc-shaped clamping plate (27) is used for clamping the cotton roller (30).
6. The adjustable arteriovenous fistula compression tourniquet according to claim 5, characterized in that: The end of the drawing wire (12) is provided with a rubber head (13) matching with the rubber strip (11); The two sides of the rubber strip (11) are provided with grooves (111), the inner side of the rubber head (13) is provided with ridges (131), and the rubber strip (11) and the rubber head (13) are movably connected via the grooves (111) and the ridges (131).