Internal fistula tourniquet

Abstract

The utility model relates to an internal fistula tourniquet, belongs to the technical field of medical instruments, and solves the problem that pressure is difficult to control and adjust in the using process of the tourniquet in the prior art. The internal fistula tourniquet comprises a connecting band, an adjusting band, a water storage bag, a pressurizing balloon assembly and a fixing assembly, the connecting band is connected with the adjusting band, the adjusting band is used for adjusting the length of the tourniquet according to the thickness of an arm of a patient, the adjusting band is connected with the water storage bag, and the pressurizing balloon assembly is used for fixing the fixing assembly. The water storage bag is connected with the pressurizing balloon assembly, the pressurizing balloon assembly is used for providing pressure for a needle eye of a patient, and the fixing assembly is connected with the pressurizing balloon assembly and the connecting band and used for fixing the tourniquet to the arm of the patient. The pressure of the tourniquet is controlled and adjusted in the hemostasis process, the fistula blocking risk is reduced, and internal fistula is prevented from being damaged due to too large pressure or sudden change.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an internal fistula tourniquet. Background Art

[0002] Hemodialysis is one of the renal replacement therapies for patients with acute and chronic renal failure. It is a process of draining blood from the body to the outside of the body, passing through a dialyzer composed of countless hollow fibers, where the blood and an electrolyte solution (dialysate) containing electrolytes at similar concentrations to the body are exchanged through diffusion / convection inside and outside the hollow fibers, removing metabolic waste and toxins from the body, maintaining electrolyte and acid-base balance, removing excess water from the body, and returning the purified blood to the body. The entire process is called hemodialysis.

[0003] At present, the tourniquet used to press the needle holes of clinical hemodialysis patients after dialysis is a commonly used flat elastic bandage. This tourniquet does not have a fixed starting pressure, which causes the pressure of the tourniquet on the fistula to fluctuate, easily causing damage to the fistula. The pressure of the tourniquet cannot be controlled and adjusted, and maintaining a high hemostatic pressure for a long time will increase the risk of fistula blockage. Utility Model Content

[0004] In view of the above analysis, the utility model aims to provide an internal fistula tourniquet to solve the problem in the prior art that it is difficult to control and adjust the pressure of the tourniquet during use.

[0005] The purpose of this utility model is mainly achieved through the following technical solutions:

[0006] An internal fistula tourniquet comprises a connecting belt, an adjusting belt, a water storage bag, a pressurized balloon assembly and a fixing assembly, wherein the connecting belt is connected to the adjusting belt, the adjusting belt is used to adjust the length of the tourniquet, the adjusting belt is connected to the water storage bag, the water storage bag is connected to the pressurized balloon assembly, the pressurized balloon assembly is used to provide pressure to the needle hole of the patient, and the fixing assembly is respectively connected to the pressurized balloon assembly and the connecting belt, and is used to fix the tourniquet on the patient's arm;

[0007] The pressurized balloon assembly includes a hard shell, a balloon and a flow rate control member.

[0008] Furthermore, a water-blocking wall is provided on the hard shell, and the water-blocking wall isolates the liquid in the water storage bag from the liquid in the pressurized balloon assembly. The interior of the hard shell is a cavity structure, and the cavity structure of the hard shell is connected to the cavity of the balloon, and the balloon is connected to the hard shell.

[0009] Furthermore, the flow rate control component includes an adjusting component, a connecting rod and a ball valve, the adjusting component is connected to the ball valve through the connecting rod, the ball valve is arranged between the hard shell and the water storage bag, and the ball valve is provided with a connecting plate on the end face for allowing liquid to pass through, and a plurality of water passages are arranged on the connecting plate.

[0010] Furthermore, the adjusting member includes a push rod, a thrust rod and a flow meter, the push rod is threadedly connected to the hard shell, and adjusting the push rod can control the rotation of the ball valve, thereby controlling the number of water channels between the pressurized balloon assembly and the water storage bag.

[0011] Furthermore, the flow meter is arranged on the hard shell, the position of the flow meter matches the push rod, the thrust rod is arranged at the starting position of the push rod, and the thrust rod is used to prevent the push rod from rotating in the opposite direction.

[0012] Furthermore, a Velcro is provided on the adjusting belt, and the adjusting belt is connected to the connecting belt via the Velcro, and the length of the tourniquet can be adjusted by adjusting the bonding length between the Velcro and the connecting belt.

[0013] Furthermore, the fixing assembly includes a fixing groove and a fixing block, the fixing groove is connected to the connecting belt, the fixing block is connected to the hard shell, the fixing groove includes a shell, a fixing pin, a fixing hole and an extrusion rod, the fixing pin is connected to the shell through a first spring, the fixing hole is set on the shell, and the fixing pin is inserted into the fixing hole.

[0014] Furthermore, the extrusion rod is arranged on both sides of the shell, and the extrusion rod is connected to the shell through a second spring. The extrusion rod can squeeze the fixing pin, and the contact part between the fixing pin and the extrusion rod is set as an inclined surface. The extrusion rod compresses the inclined surface to make the fixing pin leave the fixing hole and shrink into the shell.

[0015] Furthermore, a connecting hole is provided on the fixing block, and the fixing block is connected to the fixing groove by the fixing pin passing through the connecting hole and inserted into the fixing hole.

[0016] Furthermore, a color developing test paper is attached to the water storage bag and / or the balloon, and the color of the color developing test paper changes when encountering liquid leaked from the water storage bag and / or the pressurized balloon assembly.

[0017] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0018] 1. The internal fistula tourniquet provided by the utility model can adjust the pressure during the hemostasis process through the setting of the pressurized balloon component, which has the effect of slowly releasing pressure and avoids the risk of long-term compression of the internal fistula and increasing the risk of fistula blockage;

[0019] 2. The flow rate control component can control the flow rate of the liquid in the pressurized balloon assembly to the water storage bag, thereby controlling the pressure change of the pressurized balloon assembly on the fistula and preventing the sudden change of pressure from causing damage to the fistula;

[0020] 3. The setting of the water passage can prevent the liquid flow rate in the pressurized balloon assembly from suddenly increasing, and prevent the pressure of the pressurized balloon assembly from suddenly changing. At the same time, by controlling the number of water passages, the flow rate can be controlled, and then the pressure change of the pressurized balloon assembly on the fistula can be controlled;

[0021] 4. The tourniquet is stably connected to the patient's arm by setting a fixing component, which facilitates the fixing and removal of the tourniquet;

[0022] 5. The setting of the adjustment belt facilitates the adjustment of the length of the tourniquet according to the thickness of the patient's arm, thereby increasing the applicability of the tourniquet;

[0023] 6. The setting of the color test paper can judge whether there is leakage according to the color change of the color test paper, so as to prevent leakage from affecting the hemostatic effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. In the entire drawings, the same reference symbols represent the same components.

[0025] Figure 1 This is a schematic diagram of the overall structure of the internal fistula tourniquet of Example 1 of the utility model;

[0026] Figure 2 It is a structural schematic diagram of the adjustment belt of the utility model;

[0027] Figure 3 It is a schematic structural diagram of the pressurized balloon assembly of the utility model;

[0028] Figure 4 It is a structural schematic diagram of the ball valve of the utility model;

[0029] Figure 5 For the utility model Figure 1 A schematic diagram of the structure of part A;

[0030] Figure 6 It is a structural schematic diagram of the fixing assembly of the utility model;

[0031] Figure 7 It is a longitudinal cross-sectional view of the fixing groove of the utility model;

[0032] Figure 8 This is a schematic diagram of the overall structure of the internal fistula tourniquet of Example 2 of the utility model.

[0033] Reference numerals:

[0034] 1-connecting belt; 2-adjusting belt; 21-Velcro; 3-water storage bag; 4-pressurized balloon assembly; 41-hard shell; 411-waterproof wall; 412-anti-seepage layer; 413-liquid injection part; 4131-liquid injection hole; 4132-hole plug; 42-balloon; 43-flow rate control part; 431-adjusting part; 4311-push rod; 4312-thrust rod; 4313-flow rate meter; 432-connecting rod; 433-ball valve; 4331-connecting plate; 4332-water passage 5-fixing assembly; 51-fixing groove; 511-shell; 512-fixing pin; 5121-first spring; 513-fixing hole; 514-extrusion rod; 5141-second spring; 52-fixing block; 521-connecting hole; 6-color test paper. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0036] Example 1

[0037] A specific embodiment of the internal fistula tourniquet of the utility model is as follows Figure 1 As shown, it includes a connecting belt 1, an adjusting belt 2, a water storage bag 3, a pressurized balloon assembly 4 and a fixing assembly 5. The connecting belt 1 is connected to the adjusting belt 2, and the adjusting belt 2 is used to adjust the length of the tourniquet according to the thickness of the patient's arm. The adjusting belt 2 is connected to the water storage bag 3, and the water storage bag 3 is connected to the pressurized balloon assembly 4. The pressurized balloon assembly 4 is used to provide pressure to the patient's needle hole to achieve a hemostatic effect. The fixing assembly 5 is respectively connected to the pressurized balloon assembly 4 and the connecting belt 1, and is used to fix the tourniquet on the patient's arm.

[0038] like Figure 2 As shown, a Velcro 21 is provided on the adjusting belt 2, and the adjusting belt 2 is connected to the connecting belt 1 via the Velcro 21. The length of the tourniquet can be adjusted by adjusting the bonding length between the Velcro 21 and the connecting belt 1, so that the adjusting belt 2 can be adjusted according to the thickness of the patient's arm.

[0039] The water storage bag 3 is connected to the pressurized balloon assembly 4. Under the action of gravity, the liquid in the pressurized balloon assembly 4 can flow into the water storage bag 3. By squeezing the water storage bag 3, the liquid in the water storage bag 3 can also be squeezed into the pressurized balloon assembly 4. Exemplarily, the volume of the water storage bag 3 is 30% to 40% of the volume of the pressurized balloon assembly 4.

[0040] like Figure 1 , Figure 3As shown, the pressurized balloon assembly 4 includes a hard shell 41, a balloon 42 and a flow rate control member 43. The bottom of one end of the hard shell 41 is connected to the water storage bag 3, and the other end is connected to the fixing member 5. A water barrier 411 is arranged on the hard shell 41. The water barrier 411 isolates the liquid in the water storage bag 3 from the liquid in the pressurized balloon assembly 4. The interior of the hard shell 41 is a cavity structure. The cavity structure of the hard shell 41 is connected to the cavity of the balloon 42. The balloon 42 is connected to the hard shell 41. The flow rate control member 43 passes through the water barrier 411. The flow rate control member 43 includes an adjusting member 431, a connecting member 432, and a connecting member 433. The connecting rod 432 and the ball valve 433, the adjusting member 431 is connected to the ball valve 433 through the connecting rod 432, the ball valve 433 is arranged between the hard shell 41 and the water storage bag 3, the opening and closing of the ball valve 433 can be controlled by the adjusting member 431, so as to control the flow of liquid between the water storage bag 3 and the pressurized balloon assembly 4, and an impermeable layer 412 is arranged between the water-blocking wall 411 and the flow rate control member 43, and the impermeable layer 412 is used to prevent the liquid in the water storage bag 3 from communicating with the liquid in the pressurized balloon assembly 4 through the gap between the water-blocking wall 411 and the flow rate control member 43.

[0041] like Figure 4 As shown, the ball valve 433 is provided with a connecting plate 4331 on the end surface through which liquid passes, and the connecting plate 4331 is provided with a water passage 4332 , and the number of the water passage 4332 is plural.

[0042] It can be understood that when the pressurized balloon assembly 4 is decompressed, the ball valve 433 is transformed from the closed end to the connected end by rotating the adjusting piece 431, and the liquid in the pressurized balloon assembly 4 enters the water storage bag 3 through the water passage 4332 under the action of gravity, thereby preventing the liquid in the pressurized balloon assembly 4 from flowing too fast to cause a sudden change in pressure, and at the same time avoiding the risk of fistula blockage caused by long-term pressure application of the pressurized balloon assembly 4; during the hemostasis operation, the number of water passages 4332 between the water storage bag 3 and the pressurized balloon assembly 4 can be controlled by rotating the adjusting piece 431 to drive the ball valve 433 to rotate, thereby controlling the flow rate of the liquid in the pressurized balloon assembly 4 discharged into the water storage bag 3, and then adjusting the pressure of the balloon 42 on the patient's fistula to prevent damage to the fistula due to sudden changes in pressure.

[0043] like Figure 5As shown, the adjusting member 431 includes a push rod 4311, a thrust rod 4312 and a flow meter 4313. The push rod 4311 is threadedly connected to the hard shell 41. The adjusting push rod 4311 can control the rotation of the ball valve 433, thereby adjusting the flow rate of the liquid flowing from the pressurized balloon assembly 4 into the water storage bag 3, and then adjusting the pressure of the pressurized balloon assembly 4 on the internal fistula; the flow meter 4313 is on the hard shell 41, and the position of the flow meter 4313 cooperates with the push rod 4311. The number corresponding to the position of the push rod 4311 on the flow meter 4313 can reflect the flow rate of the liquid flowing from the pressurized balloon assembly 4 into the water storage bag 3; the thrust rod 4312 is set at the starting position of the push rod 4311. At this time, the number indicated by the push rod on the flow meter is 0, the ball valve 433 is in a closed state, and the thrust rod 4312 is used to prevent the push rod 4311 from rotating in the opposite direction.

[0044] like Figure 6 As shown, a liquid injection part 413 is also provided on the hard shell 41, and the liquid injection part 413 includes a liquid injection hole 4131 and a hole plug 4132. The liquid injection hole 4131 passes through the hard shell 41, and liquid can be injected into the cavity of the hard shell 41 and the balloon 42 through the liquid injection hole 4131. The hole plug 4132 is adapted to the liquid injection hole 4131, and the hole plug 4132 is inserted into the liquid injection hole 4131, which can achieve a sealing effect.

[0045] like Figure 1 and Figure 6 As shown, the fixing assembly includes a fixing groove 51 and a fixing block 52, the fixing groove 51 is connected to the connecting belt 1, the fixing block 52 is connected to the hard shell 41, the shape of the fixing block 52 is adapted to the groove of the fixing groove 51, and the fixing groove 51 can be connected to the fixing block 52, so as to fix the tourniquet. Figure 7 As shown, the fixing slot 51 includes a shell 511, a fixing pin 512, a fixing hole 513 and an extrusion rod 514. The fixing pin 512 is connected to the shell 511 through a first spring 5121. The shell 511 is provided with a fixing hole 513, and the fixing pin 512 is inserted into the fixing hole 513. The extrusion rod 514 is arranged on both sides of the shell 511. The extrusion rod 514 is connected to the shell 511 through a second spring 5141. The extrusion rod 514 can squeeze the fixing pin 512. The contact portion between the fixing pin 512 and the extrusion rod 514 is arranged as an inclined surface. The end of the extrusion rod 514 that contacts the fixing pin 512 cooperates with the above-mentioned inclined surface. The extrusion rod 514 squeezes the above-mentioned inclined surface to make the fixing pin 512 leave the fixing hole 513 and shrink into the shell 511 and squeeze the first spring 5121. Figure 1 As shown, a connection hole 521 is provided on the fixing block 52 , and the position and shape of the connection hole 521 match the fixing pin 512 .

[0046] When it is necessary to fix the tourniquet, the squeezing rod 514 is pressed to compress the second spring 5141. Under the squeezing of the squeezing rod 514, the fixing pin 512 leaves the fixing hole 513 and shrinks into the shell 511, connecting the fixing block 52 with the fixing slot 51, so that the position of the connecting hole 521 corresponds to the fixing pin 512. The squeezing rod 514 is released, and the second spring 5141 is reset to drive the squeezing rod 514 to move away from the fixing pin 512, thereby canceling the squeezing force on the fixing pin 512. The first spring 5121 is reset from the compressed state to drive the fixing pin 512 to pass through the connecting hole 521 and insert into the fixing hole 513, thereby fixing the connection between the fixing slot 51 and the fixing block 52, and fixing the tourniquet to the patient's arm.

[0047] When the tourniquet is used for fistula hemostasis, the push rod 4311 is adjusted to close the ball valve 433, and liquid is injected into the pressurized balloon assembly 4 through the injection hole 4131 to make the balloon 42 filled with liquid. The length of the adjustment belt 2 is adjusted according to the patient's arm circumference, and the tourniquet is fixed to the position where the patient needs to stop bleeding according to the above method, so that the balloon 42 squeezes the patient's needle eye, and the push rod 4311 is adjusted. Under the action of gravity, the liquid flows from the pressurized balloon assembly 4 into the water storage bag 3 through the water passage 4332, and the adjustment is performed. The push rod 4311 controls the number of water channels 4332 between the water bag 3 and the pressurized balloon assembly 4, and further controls the pressure of the balloon 42 on the patient's internal fistula. When 30% to 40% of the liquid in the pressurized balloon assembly 4 enters the water bag 3, that is, the water bag 3 is full, the pressure of the pressurized balloon assembly 4 is released, and the squeezing rod 514 is pressed to make the fixing pin 512 leave the fixing hole 513 and the connecting hole 521, thereby releasing the connection between the fixing groove 51 and the fixing block 52, and removing the tourniquet from the patient's arm.

[0048] Example 2

[0049] Another embodiment of the utility model, as Figure 8 As shown, the difference from Example 1 is that the above-mentioned tourniquet further includes a color test paper 6, which is attached to the water storage bag 3 and / or the balloon 42. The color test paper 6 can change color when it encounters liquid. For example, the color test paper 6 is a pH test paper. When the tourniquet leaks, the color of the color test paper 6 changes to prevent the leakage from interfering with the hemostatic effect.

[0050] Compared with the prior art, the fistula tourniquet provided by the utility model can adjust the pressure during the hemostasis process through the setting of the pressurized balloon component 4, which has the effect of slowly releasing pressure and avoids the risk of fistula blockage caused by long-term compression of the fistula; the flow rate control part 43 can control the flow rate of the liquid in the pressurized balloon component 4 to the water storage bag 3, thereby controlling the pressure change of the pressurized balloon component 4 on the fistula and preventing the sudden pressure change from causing damage to the fistula; the setting of the water passage 4332 can prevent the liquid flow rate in the pressurized balloon component 4 from suddenly increasing, preventing the pressurized balloon component 4 from causing damage to the fistula The pressure of component 4 changes suddenly, and the flow rate can be controlled by controlling the number of water channels 4332, thereby controlling the pressure change of the pressurized balloon component 4 on the fistula; the tourniquet is stably connected to the patient's arm by the setting of the fixing component 5, which is convenient for fixing and removing the tourniquet; the setting of the adjusting belt 2 is convenient for adjusting the length of the tourniquet according to the thickness of the patient's arm, thereby increasing the applicability of the tourniquet; the setting of the colorimetric test paper 6 can judge whether there is leakage according to the color change of the colorimetric test paper 6, so as to prevent leakage from affecting the hemostatic effect.

[0051] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A fistula tourniquet, characterized in that: The tourniquet comprises a connecting belt (1), an adjusting belt (2), a water storage bag (3), a pressurizing balloon assembly (4) and a fixing assembly (5), wherein the connecting belt (1) is connected to the adjusting belt (2), the adjusting belt (2) is used to adjust the length of the tourniquet, the adjusting belt (2) is connected to the water storage bag (3), the water storage bag (3) is connected to the pressurizing balloon assembly (4), the pressurizing balloon assembly (4) is used to provide pressure to the needle hole of the patient, and the fixing assembly (5) is respectively connected to the pressurizing balloon assembly (4) and the connecting belt (1) and is used to fix the tourniquet on the patient's arm; The pressurized balloon assembly (4) comprises a hard shell (41), a balloon (42) and a flow rate control element (43).

2. The internal fistula tourniquet according to claim 1, characterized in that: A water-blocking wall (411) is provided on the hard shell (41), and the water-blocking wall (411) isolates the liquid in the water storage bag (3) from the liquid in the pressurized balloon assembly (4); the interior of the hard shell (41) is a hollow structure, and the hollow structure of the hard shell (41) is connected to the hollow structure of the balloon (42), and the balloon (42) is connected to the hard shell (41).

3. The internal fistula tourniquet according to claim 2, characterized in that: The flow rate control component (43) comprises an adjusting component (431), a connecting rod (432) and a ball valve (433); the adjusting component (431) is connected to the ball valve (433) via the connecting rod (432); the ball valve (433) is arranged between the hard shell (41) and the water storage bag (3); a connecting plate (4331) is arranged on the end surface of the ball valve (433) for allowing liquid to pass through; and a plurality of water passages (4332) are arranged on the connecting plate (4331).

4. The internal fistula tourniquet according to claim 3, characterized in that: The adjusting member (431) includes a push rod (4311), a thrust rod (4312) and a flow meter (4313); the push rod (4311) is threadedly connected to the hard shell (41); adjusting the push rod (4311) can control the rotation of the ball valve (433), thereby controlling the number of water passages (4332) between the pressurized balloon assembly (4) and the water storage bag (3).

5. The internal fistula tourniquet according to claim 4, characterized in that: The flow meter (4313) is arranged on the hard shell (41), and the position of the flow meter (4313) is matched with the push rod (4311). The thrust rod (4312) is arranged at the starting position of the push rod (4311), and the thrust rod (4312) is used to prevent the push rod (4311) from rotating in the opposite direction.

6. The internal fistula tourniquet according to claim 1, characterized in that: The adjusting belt (2) is provided with a Velcro (21), and the adjusting belt (2) is connected to the connecting belt (1) via the Velcro (21). The length of the tourniquet can be adjusted by adjusting the bonding length between the Velcro (21) and the connecting belt (1).

7. The internal fistula tourniquet according to claim 1, characterized in that: The fixing assembly (5) comprises a fixing slot (51) and a fixing block (52); the fixing slot (51) is connected to the connecting belt (1); the fixing block (52) is connected to the hard shell (41); the fixing slot (51) comprises a shell (511), a fixing pin (512), a fixing hole (513) and an extrusion rod (514); the fixing pin (512) is connected to the shell (511) via a first spring (5121); the fixing hole (513) is provided on the shell (511); and the fixing pin (512) is inserted into the fixing hole (513).

8. The internal fistula tourniquet according to claim 7, characterized in that: The squeezing rod (514) is arranged on both sides of the shell (511), and the squeezing rod (514) is connected to the shell (511) through a second spring (5141). The squeezing rod (514) can squeeze the fixing pin (512), and the contact portion between the fixing pin (512) and the squeezing rod (514) is arranged to be an inclined surface. The squeezing rod (514) squeezes the inclined surface to make the fixing pin (512) leave the fixing hole (513) and shrink into the shell (511).

9. The internal fistula tourniquet according to claim 8, characterized in that: The fixing block (52) is provided with a connection hole (521), and the fixing block (52) is connected to the fixing groove (51) by the fixing pin (512) passing through the connection hole (521) and being inserted into the fixing hole (513).

10. The internal fistula tourniquet according to any one of claims 1 to 9, characterized in that: A color developing test paper (6) is attached to the water storage bag (3) and / or the balloon (42), and the color developing test paper (6) changes color when encountering liquid leaked from the water storage bag (3) and / or the pressurized balloon assembly (4).

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