A hemodialysis arteriovenous puncture device capable of preventing blood leakage

Abstract

The present invention provides a hemodialysis arteriovenous puncture device capable of preventing bleeding, comprising a disposable arteriovenous puncture needle and a bleeding prevention component; the disposable arteriovenous puncture needle comprises an arteriovenous puncture needle tube, a catheter and a double-wing handle; the bleeding prevention component comprises a pressing plate, an airbag, a liquid detection sensor and a pressure sensor; the pressing plate is fixedly arranged on the front side of the double-wing handle, the airbag is arranged at the bottom of the pressing plate, a groove is arranged in the middle of the bottom of the airbag, and a liquid detection sensor and a pressure sensor are arranged at the bottom of the airbag and on both sides of the groove. When using the hemodialysis arteriovenous puncture device of the present invention, a certain amount of gas is pre-filled into the airbag so that the liquid detection sensor contacts the puncture site. Once bleeding is detected, gas will continue to be filled into the airbag, the front end of the airbag will continue to extend forward, and the bottom of the airbag will continue to extend downward, pressing the puncture site to prevent bleeding.

Description

Technical Field

[0001] The invention relates to the technical field of hemodialysis, in particular to a hemodialysis arteriovenous puncture device capable of preventing blood leakage. Background Art

[0002] Hemodialysis uses the principle of semipermeable membrane to remove harmful substances, metabolic waste and excess electrolytes from the body through diffusion, so as to purify the blood and correct the balance of water, electrolytes and acid-base. Hemodialysis is to draw blood out and then pour it back through a purification device. This is a method specifically used to treat uremia. A special machine is used to purify the blood before returning it to the body. One treatment takes about four hours. It uses an extracorporeal circulation method.

[0003] The equipment used in hemodialysis includes disposable dialysis care kits and disposable arteriovenous puncture needles. When medical staff use disposable arteriovenous puncture needles to puncture arteriovenous fistulas, arteriovenous fistula bleeding may sometimes occur. The reasons for arteriovenous fistula bleeding are: 1. The bevel of the fistula puncture needle is relatively thick, and the local wound is relatively large. Long-term, repeated, and frequent punctures cause the damaged blood vessel wall to weaken its elasticity, forming nodules and scars; the patient's skin elasticity is relatively poor and the healing ability is relatively poor; 2. Anticoagulants are used in hemodialysis, which is relatively easy to bleed; therefore, anticoagulants also affect the patient's bleeding. If bleeding occurs, the dose of anticoagulants should be reduced; 3. Insufficient blood flow after puncture, repeated adjustment of puncture 1. The position of the needle causes damage to the skin of the puncture needle, which expands and is difficult to stop bleeding; 2. Elderly patients have atherosclerosis, poor vascular elasticity, and loose skin, so it is relatively difficult to stop bleeding; 3. Long-term puncture of one part also makes the local blood vessels less elastic and difficult to stop bleeding; 4. The puncture technique is not strong, which is a problem of the medical staff themselves, and they need to strengthen the training of puncture techniques or management; 5. The fixation method is inappropriate. After the arteriovenous fistula is punctured, it must be firmly fixed, especially during dialysis, and the puncture needle must not be loose or slip off; the puncture needle must not be too close to the skin, and the tape is not firmly fixed. When the patient changes position, the needle tip is easy to slip off, causing bleeding or heavy bleeding.

[0004] During hemodialysis, once bleeding occurs, the blood is easy to wet the nursing pad or bed sheet. After the patient or nursing staff finds it, the nursing staff needs to replace the nursing pad or bed sheet in time, press the puncture site with gauze, and then tie it with a red envelope band to prevent bleeding by pressing with the red envelope band and gauze. This way of dealing with bleeding requires the patient or nursing staff to pay attention at all times, and it is easy to be discovered only after the bleeding flows out, so it is easy to wet the nursing pad or bed sheet. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the present invention provides a hemodialysis arteriovenous puncture device capable of preventing blood leakage.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A hemodialysis arteriovenous puncture device capable of preventing bleeding, comprising a disposable arteriovenous puncture needle and a bleeding prevention component;

[0008] The disposable arteriovenous puncture needle comprises an arteriovenous puncture needle tube and a catheter, the rear end of the arteriovenous puncture needle tube is connected to one end of the catheter, and a double-wing handle is arranged on the arteriovenous puncture needle tube near its rear end;

[0009] The blood leakage prevention component includes a pressure plate, an airbag, a liquid detection sensor and a pressure sensor; the pressure plate is fixedly arranged on the front side of the double-wing handle and located above the arteriovenous puncture needle tube, the airbag is arranged at the bottom of the pressure plate, a groove is arranged in the middle of the bottom of the airbag, the arteriovenous puncture needle tube passes through the bottom of the groove, and a liquid detection sensor and a pressure sensor are arranged at the bottom of the airbag and on both sides of the groove.

[0010] As a preferred embodiment of the present invention, the pressure plate is an arc-shaped pressure plate, the rear end of the pressure plate is fixed to the front side of the double-wing handle, the front end of the pressure plate extends forward, and the front end of the pressure plate is closer to the arteriovenous puncture needle tube than the rear end, the upper part of the airbag is arranged at the bottom of the pressure plate, the groove at the bottom of the airbag is pressed on the arteriovenous puncture needle tube, and the left and right sides of the airbag extend out of the left and right sides of the arteriovenous puncture needle tube.

[0011] As a preferred embodiment of the present invention, the blood leakage prevention component also includes a tracheal branch I, a through hole I is provided on the double-wing handle, one end of the tracheal branch I is connected to the rear end of the through hole I, and the front end of the through hole I is connected to the airbag.

[0012] As a preferred embodiment of the present invention, the blood leakage prevention component also includes a tracheal branch II and a tracheal branch III, a through hole II is also provided on the double-wing handle, one end of the tracheal branch II is connected to the rear end of the through hole II, and a tracheal branch III is connected to the left and right sides of the pressure plate, one end of the tracheal branch III on the left and right sides is connected to the front end of the through hole II, and a suction cup is connected to the other end of the tracheal branch III.

[0013] As a preferred solution of the present invention, the pressure plate includes an upper pressure plate and a lower pressure plate, a cavity is formed between the upper pressure plate and the lower pressure plate, the cavity is filled with an adsorption foam layer, and a plurality of adsorption holes are vertically arranged on the side walls around the airbag, and the top of the adsorption hole is connected to the cavity.

[0014] As a preferred embodiment of the present invention, the blood leakage prevention component also includes a tracheal branch IV, a through hole III is provided on the double-wing handle, one end of the tracheal branch IV is connected to the rear end of the through hole III, and the front end of the through hole III is connected to the cavity.

[0015] As a preferred solution of the present invention, the other end of the tracheal branch I, the other end of the tracheal branch II and the other end of the tracheal branch IV are all connected to the three interfaces on one end of the solenoid valve, and the three interfaces on the other end of the solenoid valve are all connected to the air pump through pipelines.

[0016] As a preferred solution of the present invention, the liquid detection sensor and the pressure sensor are connected to the signal input end of the controller, and the signal output end of the controller is connected to the alarm, the air pump and the solenoid valve.

[0017] As a preferred embodiment of the present invention, the tracheal branch III is an elastic tracheal branch.

[0018] As a preferred solution of the present invention, at least two suction cups are connected to the other end of each tracheal branch III, and the tracheal branch III is connected to the suction cups on the corresponding ends.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. Using the hemodialysis arteriovenous puncture device capable of preventing bleeding of the present invention, a certain amount of gas is pre-filled into the airbag, so that the front end of the airbag extends forward and the bottom of the airbag extends downward, and the liquid detection sensor and the pressure sensor are in contact with the puncture site. Once the liquid detection sensor detects bleeding, it will continue to fill the airbag with gas, the front end of the airbag continues to extend forward, and the bottom of the airbag continues to extend downward, applying pressure to the puncture site to prevent bleeding, thereby achieving automatic prevention of bleeding.

[0021] 2. At the same time, once the liquid detection sensor detects blood leakage, the liquid detection sensor inputs the signal into the controller, and the controller activates the alarm, which automatically prompts the patient or nursing staff to pay attention and observe. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The present invention is a schematic diagram of the structure of a hemodialysis arteriovenous puncture device capable of preventing bleeding;

[0023] Figure 2 It is a schematic diagram of the structure of the pressure plate and the air bag;

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of the pressure plate and the airbag;

[0025] Figure 4 It is a schematic diagram of the structure of the double wing handle;

[0026] Figure 5 It is a structural schematic diagram of the pressure plate.

[0027] In the figure: 1—arteriovenous puncture needle tube; 2—catheter; 3—wing handle; 4—pressing plate; 41—upper pressing plate; 42—lower pressing plate; 43—cavity; 44—adsorption foam layer; 45—adsorption hole; 5—air bag; 6—liquid detection sensor; 7—pressure sensor; 8—groove; 9—tracheal branch

[0028] Ⅰ; 10—through hole Ⅰ; 11—tracheal branch Ⅱ; 12—tracheal branch Ⅲ; 13—through hole Ⅱ; 14—suction cup; 15—tracheal branch Ⅳ; 16—through hole Ⅲ; 17—solenoid valve; 18—air pump; 19—controller; 20—alarm. DETAILED DESCRIPTION

[0029] The present invention is described in detail below in conjunction with embodiments and drawings.

[0030] like Figure 1 As shown, a hemodialysis arteriovenous puncture device capable of preventing blood leakage comprises a disposable arteriovenous puncture needle and a blood leakage prevention component.

[0031] The disposable arteriovenous puncture needle comprises an arteriovenous puncture needle tube 1 and a catheter 2, the rear end of the arteriovenous puncture needle tube 1 is connected to one end of the catheter 2, and the other end of the catheter 2 can be connected to the pipeline on the dialysis machine through a connector thereon, and a double-winged handle 3 is provided near the rear end of the arteriovenous puncture needle tube 1. In this embodiment, the front end refers to the direction toward the front end of the arteriovenous puncture needle tube 1, and the rear end refers to the direction away from the front end of the arteriovenous puncture needle tube 1.

[0032] The blood leakage prevention components include a pressure plate 4, an air bag 5, a liquid detection sensor 6 and a pressure sensor 7. Figure 2 and Figure 3As shown. The pressing plate 4 is fixedly arranged on the front side of the double-wing handle 3 and is located above the arteriovenous puncture needle tube 1, the airbag 5 is arranged at the bottom of the pressing plate 4, a groove 8 is arranged in the middle of the bottom of the airbag 5, the arteriovenous puncture needle tube 1 passes through the bottom of the groove 8, and a liquid detection sensor 6 and a pressure sensor 7 are arranged at the bottom of the airbag 5 and on both sides of the groove 8. In this embodiment, the pressing plate 4 is an arc-shaped pressing plate, the rear end of the pressing plate 4 is fixed to the front side of the double-wing handle 3, the front end of the pressing plate 4 extends forward, and the front end of the pressing plate 4 is closer to the arteriovenous puncture needle tube 1 than the rear end, the upper part of the airbag 5 is arranged at the bottom of the pressing plate 4, the groove 8 at the bottom of the airbag 5 is pressed on the arteriovenous puncture needle tube 1, and the left and right sides of the airbag 5 extend out of the left and right sides of the arteriovenous puncture needle tube 1. Before the arteriovenous puncture needle tube 1 performs puncture, the gas in the airbag 5 is extracted, and the airbag 5 is completely retracted at the bottom of the pressure plate 4 to avoid affecting the puncture of the arteriovenous puncture needle tube 1. After the arteriovenous puncture needle tube 1 performs puncture, a certain amount of gas is pre-filled into the airbag 5, and the front end of the airbag 5 extends forward from the pressure plate 4, and the bottom of the airbag 5 extends downward, so that the liquid detection sensor 6 and the pressure sensor 7 at the bottom of the airbag 5 contact the puncture site. Once the liquid detection sensor 6 detects bleeding, it will continue to fill the airbag 5 with gas, and the front end of the airbag 5 continues to extend forward, and the bottom of the airbag 5 continues to extend downward, applying pressure to the puncture site, thereby preventing bleeding, thereby automatically preventing bleeding. The pressure sensor 7 at the bottom of the airbag 5 can collect the pressure applied to the puncture site, so that the pressure applied by the airbag 5 to the puncture site can be controlled within a certain range, which can ensure that the pressure of the airbag 5 on the puncture site is just enough to prevent bleeding.

[0033] The blood leakage prevention component also includes tracheal branch I9, tracheal branch II11, tracheal branch III12 and tracheal branch IV15. Figure 1 The double-wing handle 3 is provided with through hole Ⅰ10, through hole Ⅱ13 and through hole Ⅲ16, as shown in FIG. Figure 4 The pressing plate 4 includes an upper pressing plate 41 and a lower pressing plate 42, and a cavity 43 is formed between the upper pressing plate 41 and the lower pressing plate 42. Figure 5 As shown, the cavity 43 is filled with an adsorption foam layer 44, and a plurality of adsorption holes 45 are vertically arranged on the surrounding side walls of the airbag 5, and the tops of the adsorption holes 45 are connected to the cavity 43. The blood adsorbed through the adsorption holes 45 enters the cavity 43 and is adsorbed in the adsorption foam layer 44, which plays the role of storing blood.

[0034] One end of the tracheal branch Ⅰ9 is connected to the rear end of the through hole Ⅰ10, and the front end of the through hole Ⅰ10 is connected to the airbag 5. One end of the tracheal branch Ⅱ11 is connected to the rear end of the through hole Ⅱ13. The left and right sides of the pressure plate 4 are connected to a tracheal branch Ⅲ12. One end of the tracheal branch Ⅲ12 on the left and right sides is connected to the front end of the through hole Ⅱ13. The other end of the tracheal branch Ⅲ12 is connected to the suction cup 14, as shown in FIG. Figure 1As shown. In this embodiment, the tracheal branch III12 is an elastic tracheal branch, and at least two suction cups 14 are connected to the other end of each tracheal branch III12. The tracheal branch III12 is connected to the suction cups 14 on the corresponding end, and the suction cups 14 on the other end of the tracheal branch III12 are adsorbed on both sides of the puncture site on the arm, thereby fixing the position of the pressing plate 4, and preventing the front end of the pressing plate 4 from tilting upward when the airbag 5 is inflated. The elastic tracheal branch has a certain spring, which can appropriately buffer the downward pressure of the pressing plate 4. One end of the tracheal branch IV15 is connected to the rear end of the through hole III16, and the front end of the through hole III16 is connected to the cavity 43.

[0035] The other end of the tracheal branch I9, the other end of the tracheal branch II11 and the other end of the tracheal branch IV15 are all connected to the three interfaces on one end of the solenoid valve 17, and the three interfaces on the other end of the solenoid valve 17 are all connected to the air pump 18 through pipelines. The liquid detection sensor 6 and the pressure sensor 7 are connected to the signal input end of the controller 19, and the signal output end of the controller 19 is connected to the alarm 20, the air pump 18 and the solenoid valve 17. Figure 1 As shown, the liquid detection sensor 6 and the pressure sensor 7 input the collected signals into the controller 19 , and the controller 19 further controls the alarm 20 , the air pump 18 and the solenoid valve 17 .

[0036] When using this hemodialysis arteriovenous puncture device that can prevent blood leakage, before the arteriovenous puncture needle tube 1 performs puncture, the interface passage on the solenoid valve 17 corresponding to the tracheal branch Ⅰ9 is started through the controller 19, and the air pump 18 draws out the gas in the airbag 5. The airbag 5 is completely contracted at the bottom of the pressure plate 4, and the front end of the arteriovenous puncture needle tube 1 is completely exposed, thereby avoiding affecting the puncture of the arteriovenous puncture needle tube 1. After the arteriovenous puncture needle tube 1 is punctured, the double-wing handle 3 and the arteriovenous puncture needle tube 1 are fixed to the puncture site with adhesive tape, and then the suction cups 14 on the tracheal branch Ⅰ9 corresponding to the two sides of the pressure plate 4 are adsorbed on the corresponding sides of the arm, and the interface passage on the solenoid valve 17 corresponding to the tracheal branch Ⅱ11 is started by the controller 19, and the gas in the suction cup 14 on the tracheal branch Ⅰ9 is extracted by the air pump 18. The suction cup 14 is further firmly adsorbed on the arm, and the interface passage on the solenoid valve 17 corresponding to the tracheal branch Ⅰ9 is started by the controller 19. The air pump 18 pre-fills a certain amount of gas into the airbag 5, so that the front end of the airbag 5 extends forward from the pressure plate 4, and the bottom of the airbag 5 extends downward, so that the liquid detection sensor 6 and the pressure sensor at the bottom of the airbag 5 The sensor 7 contacts the puncture site, and the signals collected by the liquid detection sensor 6 and the pressure sensor 7 are input into the controller 19. Once the liquid detection sensor 6 detects the occurrence of blood leakage, the controller 19 can start the interface passage on the solenoid valve 17 corresponding to the tracheal branch Ⅰ9 again, and the air pump 18 continues to fill the air into the airbag 5. The front end of the airbag 5 continues to extend forward, and the bottom of the airbag 5 continues to extend downward, applying pressure to the puncture site to prevent bleeding, thereby automatically preventing bleeding. The pressure sensor 7 at the bottom of the airbag 5 can collect the pressure of the puncture site, so that the pressure of the airbag 5 on the puncture site can be controlled within a certain range, which can ensure that the pressure of the airbag 5 on the puncture site can just prevent bleeding. If the leaked blood has seeped out and flowed to the edge of the airbag 5, the controller 19 activates the interface passage on the electromagnetic valve 17 corresponding to the tracheal branch IV 15, and the air pump 18 absorbs the blood on the edge of the airbag 5 through the tracheal branch IV 15, the through hole III 16, the cavity 43 and the adsorption hole 45. The blood is sucked and stored in the adsorption foam layer 44 to prevent the blood from wetting the nursing pad and the bed sheet. The whole process is automatically controlled by the controller 19. The controller 19 also activates the alarm 20, which warns and automatically prompts the patient or the nursing staff to pay attention and observe.

[0037] The parts of tracheal branch I9, tracheal branch II11 and tracheal branch IV15 close to the double-wing handle 3 are fixedly connected to the catheter 2 to avoid interfering with the puncture of the arteriovenous puncture needle tube 1. The other ends of tracheal branch I9, tracheal branch II11 and tracheal branch IV15 are detachably connected to the three interfaces on one end of the solenoid valve 17. After the hemodialysis is completed, the other ends of tracheal branch I9, tracheal branch II11 and tracheal branch IV15 can be unplugged from the three interfaces on one end of the solenoid valve 17. Tracheal branch I9, tracheal branch II11, tracheal branch IV15, disposable arteriovenous puncture needle, pressure plate 4, air bag 5, tracheal branch III12 and suction cup 14 are all disposable items; while the air pump 18, solenoid valve 17, controller 19 and alarm 20 are reusable. The pressure collected by the pressure sensor 7 at the bottom of the airbag 5 is transmitted to the controller 19, and the controller 19 controls the air pump 18 to fill the airbag 5 with air pressure, so that the air pressure in the airbag 5 can just prevent bleeding. If the pressure is too high, it will hinder blood flow, and if the pressure is too low, it will not prevent bleeding. Therefore, the pressure of the pre-filling and re-filling of the airbag 5 can be controlled by the pressure sensor 7 and the controller 19 at the bottom of the airbag 5, and the pulling force of the suction cup 14 and the tracheal branch III 12 on the pressure plate 4 can also be controlled to prevent the front end of the pressure plate 4 from tilting upward due to excessive inflation pressure in the airbag 5, thereby preventing the front end of the arteriovenous puncture needle tube 1 from tilting upward.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A hemodialysis arteriovenous puncture device capable of preventing bleeding, characterized in that: Including disposable arteriovenous puncture needles and bleeding prevention components; The disposable arteriovenous puncture needle comprises an arteriovenous puncture needle tube (1) and a catheter (2), the rear end of the arteriovenous puncture needle tube (1) is connected to one end of the catheter (2), and a double-wing handle (3) is provided on the arteriovenous puncture needle tube (1) near its rear end; The blood leakage prevention component comprises a pressing plate (4), an air bag (5), a liquid detection sensor (6) and a pressure sensor (7); the pressing plate (4) is fixedly arranged on the front side of the double-wing handle (3) and is located above the arteriovenous puncture needle tube (1); the air bag (5) is arranged at the bottom of the pressing plate (4); a groove (8) is arranged in the middle of the bottom of the air bag (5); the arteriovenous puncture needle tube (1) passes through the bottom of the groove (8); the liquid detection sensor (6) and the pressure sensor (7) are arranged at the bottom of the air bag (5) and on both sides of the groove (8); The pressing plate (4) is an arc-shaped pressing plate, the rear end of the pressing plate (4) is fixed to the front side of the double-wing handle (3), the front end of the pressing plate (4) extends forward, and the front end of the pressing plate (4) is closer to the arteriovenous puncture needle tube (1) than the rear end, the upper part of the air bag (5) is arranged at the bottom of the pressing plate (4), the groove (8) at the bottom of the air bag (5) is pressed on the arteriovenous puncture needle tube (1), and the left and right sides of the air bag (5) extend out of the left and right sides of the arteriovenous puncture needle tube (1).

2. A hemodialysis arteriovenous puncture device capable of preventing bleeding according to claim 1, characterized in that: The blood leakage prevention component also includes a tracheal branch I (9), and a through hole I (10) is provided on the double-wing handle (3). One end of the tracheal branch I (9) is connected to the rear end of the through hole I (10), and the front end of the through hole I (10) is connected to the inside of the airbag (5).

3. A hemodialysis arteriovenous puncture device capable of preventing bleeding according to claim 2, characterized in that: The blood leakage prevention component also includes a tracheal branch II (11) and a tracheal branch III (12). The double-wing handle (3) is also provided with a through hole II (13). One end of the tracheal branch II (11) is connected to the rear end of the through hole II (13). The left and right sides of the pressure plate (4) are each connected to a tracheal branch III (12). One end of the tracheal branches III (12) on the left and right sides is connected to the front end of the through hole II (13). The other end of the tracheal branch III (12) is connected to a suction cup (14).

4. A hemodialysis arteriovenous puncture device capable of preventing bleeding according to claim 3, characterized in that: The pressing plate (4) comprises an upper pressing plate (41) and a lower pressing plate (42), a cavity (43) is formed between the upper pressing plate (41) and the lower pressing plate (42), the cavity (43) is filled with an adsorption foam layer (44), a plurality of adsorption holes (45) are vertically arranged on the surrounding side walls of the airbag (5), and the top of the adsorption hole (45) is connected to the cavity (43); The blood leakage prevention component also includes a tracheal branch IV (15), and a through hole III (16) is provided on the double-wing handle (3). One end of the tracheal branch IV (15) is connected to the rear end of the through hole III (16), and the front end of the through hole III (16) is connected to the cavity (43).

5. The hemodialysis arteriovenous puncture device capable of preventing bleeding according to claim 4, characterized in that: The other end of the tracheal branch I (9), the other end of the tracheal branch II (11) and the other end of the tracheal branch IV (15) are all connected to three interfaces on one end of the electromagnetic valve (17), and the three interfaces on the other end of the electromagnetic valve (17) are all connected to the air pump (18) through pipelines.

6. A hemodialysis arteriovenous puncture device capable of preventing bleeding according to claim 5, characterized in that: The liquid detection sensor (6) and the pressure sensor (7) are connected to the signal input end of the controller (19), and the signal output end of the controller (19) is connected to the alarm (20), the air pump (18) and the solenoid valve (17).

7. A hemodialysis arteriovenous puncture device capable of preventing bleeding according to claim 6, characterized in that: The tracheal branch III (12) is an elastic tracheal branch.

8. A hemodialysis arteriovenous puncture device capable of preventing bleeding according to claim 7, characterized in that: At least two suction cups (14) are connected to the other end of each tracheal branch III (12), and the tracheal branch III (12) is in communication with the suction cups (14) on the corresponding ends.

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