Disposable tourniquet

Abstract

The present invention discloses a disposable tourniquet, which is composed of a snap fastener, a strap and a cutting device. The snap fastener is a push-type snap fastener, which is composed of a base and a pressing plate. Among them, the pressing plate is hinged to the base. One side of the base can be fixedly connected to one end of the strap, and the other side can be connected to the cutting device. When in use, the other end of the strap can be passed through the cutting device, then passed through the space between the pressing plate and the base from the other side of the base, and then pressing down the pressing plate can make the pressing plate and the base buckle tightly to fasten the strap. After use, the strap is cut off by the cutting device, thereby destroying the tourniquet and preventing the tourniquet from being used again.

Description

Technical Field

[0001] The present invention relates to the technical field of tourniquets, and particularly relates to a disposable tourniquet. Background Art

[0002] A tourniquet is a long strip-shaped strap made of natural rubber or other materials, which is suitable for first aid in case of severe bleeding of the limbs. In order to quickly tighten the tourniquet, most of the existing tourniquets are composed of a buckle and a strap. Among them, the buckle is mainly composed of a pressing plate and a base hinged together. One end of the strap can be fixedly connected to the base. When in use, the tourniquet can be wound around the limb, and the other end of the tourniquet can be passed through the gap between the pressing plate and the base and tightened until the bleeding site stops bleeding, then the pressing plate can be pressed to tighten the buckle.

[0003] After hemostasis, the buckle needs to be loosened every once in a while, and the tourniquet is loosened for a period of time and then tightened to avoid prolonged ischemia of the limb. Moreover, the use of the tourniquet has a time limit. After a certain period of time, since the limb has no chance of survival, when the tourniquet is loosened at this time, it is very likely that toxic substances such as potassium ions and myoglobin produced by necrotic cells will flow into the whole body, causing more serious consequences. Therefore, if the patient has not been treated for a long time, there is no need to loosen the tourniquet regularly.

[0004] Since the tourniquet is extremely easy to be contaminated by bacteria, dust, etc. during use, the existing tourniquets are all disposable medical supplies and need to be destroyed after use. Therefore, there is an urgent need for a technology that can destroy the tourniquet to prevent it from being used again. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a disposable tourniquet, which can destroy the tourniquet after use to prevent it from being used again.

[0006] A disposable tourniquet, in a first implementable manner, includes a buckle and a strap. One end of the strap is connected to the buckle, and further includes a cutting device. The other end of the strap passes through the cutting device and then passes through the gap between the pressing plate and the base of the buckle.

[0007] In combination with the first implementable manner, in a second implementable manner, the cutting device includes a cutting table, a guillotine knife, a suspension mechanism, and a triggering mechanism. The guillotine knife is arranged directly above the cutting table through the suspension mechanism. The strap passes through the gap between the guillotine knife and the cutting table. The triggering mechanism is connected to the suspension mechanism and is used to trigger the suspension mechanism to release the guillotine knife.

[0008] In the second implementation manner, in the third implementation manner, the suspension mechanism includes two piston cylinders. The guillotine is arranged above the cutting table through the two piston cylinders, and both ends of the handle of the guillotine are respectively connected to the piston rods of the two piston cylinders. The piston cylinder is provided with an exhaust valve, and the exhaust valve is connected to the trigger mechanism, and the trigger mechanism triggers the exhaust valve to open.

[0009] In the third implementation manner, in the fourth implementation manner, the exhaust valve is a pull-ring type exhaust valve. The trigger mechanism includes a ratchet mechanism and a winding roller. The winding roller is connected to the platen shaft. The pawl of the ratchet mechanism is connected to the platen in a matching manner, the ratchet is connected to the winding roller shaft, and the winding roller is connected to the pull ring of the exhaust valve through a connecting rope.

[0010] In the fourth implementation manner, in the fifth implementation manner, it further includes a driving motor and a timing switch. The driving shaft of the driving motor is connected to the winding roller shaft, and the timing switch is connected in series in the power supply circuit of the driving motor.

[0011] In the first implementation manner, in the sixth implementation manner, the cutting device includes a cutting table, a guillotine and two piston cylinders. The two piston cylinders are arranged side by side vertically on the cutting table. Both ends of the handle of the guillotine are respectively connected to the piston rods of the two piston cylinders. The piston cylinder is provided with a timing automatic exhaust valve, and the strap passes through between the guillotine and the cutting table.

[0012] In the third or sixth implementation manner, in the seventh implementation manner, it further includes a limiting platform. The limiting platform is arranged between the cutting table and the guillotine, and both sides are respectively connected to the cylinder bodies of the two piston cylinders. The limiting platform is provided with a limiting strip hole along the vertical direction, and the blade of the guillotine passes through the limiting strip hole.

[0013] In the first implementation manner, in the eighth implementation manner, it further includes a blood pressure detector. The blood pressure detector includes an armband and a detection terminal, and the armband is connected to the detection terminal.

[0014] In the first implementation manner, in the ninth implementation manner, it further includes a timing alarm.

[0015] Advantageous effects: By using the disposable tourniquet of the present invention, after the tourniquet is used up, the strap of the tourniquet is cut off by the provided cutting device, thereby destroying the tourniquet and preventing the tourniquet from being used again. Description of the Drawings

[0016] To more clearly illustrate the specific embodiments of the present invention, the following will briefly introduce the drawings required for the specific embodiments. In all the drawings, the components or parts are not necessarily drawn to actual scale.

[0017] Figure 1 Structural schematic diagram of a disposable tourniquet provided by an embodiment of the present invention;

[0018] Figure 2 Internal structural schematic diagram of a cutting device provided by an embodiment of the present invention;

[0019] Figure 3 For Figure 2 Schematic diagram of the connection structure between the cutting device and the buckle shown;

[0020] Figure 4 Internal structural schematic diagram of a cutting device provided by another embodiment of the present invention;

[0021] Figure 5 Internal structural schematic diagram of a cutting device provided by another embodiment of the present invention;

[0022] Figure 6 Structural schematic diagram of a disposable tourniquet provided by another embodiment of the present invention;

[0023] Reference numerals:

[0024] 1 - Buckle, 2 - Bandage, 3 - Cutting device, 4 - Cutting table, 5 - Guillotine, 6 - Piston cylinder, 7 - Exhaust valve, 8 - Automatic exhaust valve, 9 - Threading roller, 10 - Pressure plate, 11 - Pulley, 12 - Ratchet wheel, 13 - Pawl, 14 - Connecting rope, 15 - Limiting platform, 16 - Driving motor, 17 - Arm band, 18 - Detection terminal, 19 - Timing alarm. Specific embodiments

[0025] The following will describe in detail the embodiments of the technical solutions of the present invention with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention, so they are only examples and cannot be used to limit the protection scope of the present invention.

[0026] Embodiment 1

[0027] As Figure 1 The structural schematic diagram of the disposable tourniquet shown, the tourniquet includes a buckle 1 and a bandage 2, one end of the bandage 2 is connected to the buckle 1, and further includes a cutting device 3, and the other end of the bandage 2 passes through the cutting device 3 and then passes between the pressure plate 10 and the base of the buckle 1.

[0028] Specifically, the tourniquet consists of a snap fastener 1, a strap 2, and a cutting device 3. The snap fastener 1 is a push-type snap fastener 1, which is composed of a base and a pressing plate 10. Among them, the pressing plate 10 is hinged to the base. One side of the base can be fixedly connected to one end of the strap 2, and the other side can be connected to the cutting device 3. When in use, the other end of the strap 2 can pass through the cutting device 3, then pass through between the pressing plate 10 and the base on the other side of the base, and pressing down the pressing plate 10 can make the pressing plate 10 buckle with the base to fasten the strap 2. After use, the strap 2 is cut off by the cutting device 3, thereby destroying the tourniquet and preventing the tourniquet from being used again.

[0029] In this embodiment, optionally, as Figure 2 , Figure 3 shown, the cutting device 3 includes a cutting table 4, a guillotine 5, a suspension mechanism, and a trigger mechanism. The guillotine 5 is arranged directly above the cutting table 4 through the suspension mechanism. The strap 2 passes between the guillotine 5 and the cutting table 4. The trigger mechanism is connected to the suspension mechanism and is used to trigger the suspension mechanism to release the guillotine 5.

[0030] Specifically, the cutting device 3 can be composed of a housing, a cutting table 4, a guillotine 5, a suspension mechanism, and a trigger mechanism. The cutting table 4, the guillotine 5, the suspension mechanism, and the trigger mechanism are all arranged inside the housing. The guillotine 5 is placed on the suspension mechanism, and the cutting table 4 is located directly below the guillotine 5. Two opposite through holes are opened on the housing in the direction of the snap fastener 1. The strap 2 can extend into the housing along one of the through holes, pass between the cutting table 4 and the guillotine 5, and pass out of the housing through the other through hole and then pass between the pressing plate 10 and the base of the snap fastener 1. The trigger mechanism can trigger the suspension mechanism to release the guillotine 5, and the guillotine 5 can fall under the action of gravity to cut the strap 2.

[0031] In this embodiment, the suspension mechanism includes two piston cylinders 6. The two piston cylinders 6 can be arranged side by side on the tabletop of the cutting table 4. The two ends of the handle of the guillotine 5 can be respectively connected to the piston rods of the two piston cylinders 6. High-pressure gas is filled between the piston and the cylinder body of the piston cylinder 6, which can push up the piston rod, so that the guillotine 5 is suspended above the cutting table 4.

[0032] The piston cylinder 6 is provided with an exhaust valve 7. The exhaust valve 7 is a pull-ring type exhaust valve 7. Pulling the pull ring of the exhaust valve 7 by the trigger mechanism can open the exhaust valve 7, so that the high-pressure air in the piston cylinder 6 is discharged. After the gas is discharged, the piston rod can fall, so that the guillotine 5 falls to cut the strap 2.

[0033] In this embodiment, the trigger mechanism includes a ratchet mechanism and a winding roller 9. The ratchet of the ratchet mechanism is connected to the pressure plate 10 through a hinge shaft. One end of the hinge shaft can be hinged to one end of the ratchet, and the other end can pass through the shell along the arc-shaped strip hole opened on the shell and be hinged to the pressure plate 10. Pressing the pressure plate 10 can drive the ratchet 13 to turn the ratchet 12, so that the ratchet 12 rotates. The ratchet 12 is connected to the winding roller 9 axis. The rotation of the ratchet 12 can drive the winding roller 9 to rotate, so that the connecting rope 14 connected to the winding roller 9 is wound onto the winding roller 9. One end of the connecting rope 14 is connected to the winding roller 9, and the other end passes through the pulley 11 to connect to the pull ring of the exhaust valve 7. The pulley 11 can change the direction of the force applied to the connecting rope 14, so that the connecting rope 14 is horizontally connected to the pull ring, so as to pull the pull ring.

[0034] Since the length of the connecting rope 14 between the winding roller 9 and the pull ring is fixed, each time the pressing plate 10 is pressed, the ratchet 12 can be rotated by a certain angle, so that a certain length of the connecting rope 14 can be reeled onto the winding roller 9. Therefore, the number of pressing times of the pressing plate 10 is limited, and the number threshold of pressing times of the pressing plate 10 can be set by the rotation angle of each rotation of the ratchet 12, the diameter of the winding roller 9 and the length of the connecting rope 14. When the number of pressing times of the pressing plate 10 reaches the set number threshold, the pull ring of the exhaust valve 7 can be pulled by the connecting rope 14, so that the high-pressure air in the piston cylinder 6 is discharged.

[0035] In this embodiment, a limiter 15 is optionally further included, which is disposed between the cutting table 4 and the guillotine 5, and is connected to the cylinder bodies of the two piston cylinders 6 on both sides, and the limiter 15 is provided with a limiter bar hole in the vertical direction, and the blade of the guillotine 5 passes through the limiter bar hole. The limiter bar hole can limit the falling guillotine 5 to prevent the guillotine 5 from deflecting during the falling process.

[0036] Embodiment 2

[0037] Embodiment 2 is substantially the same as Embodiment 1, with the main difference being that it further comprises a drive motor 16 and a timing switch, wherein the drive shaft of the drive motor 16 is connected to the shaft of the winding roller 9 , and the timing switch is connected in series in the power supply circuit of the drive motor 16 .

[0038] Specifically, if Figure 4As shown, the drive motor 16 can be a non-axis-locking drive motor 16, and the drive shaft of the motor can be connected to the rotating shaft of the wire winding roller 9. Since the drive motor 16 is non-axis-locking when not powered on, when the ratchet 12 drives the wire winding roller 9 to rotate, the drive shaft of the drive motor 16 can also rotate accordingly without affecting the wire winding roller 9. The power supply terminal of the drive motor 16 can be connected to the power supply via a timing switch, and the timing switch can be closed at a fixed time, so that the power supply circuit of the drive motor 16 is closed, and the drive motor 16 can drive the wire winding roller 9 to rotate and wind the wire, triggering the suspension mechanism to release the guillotine 5.

[0039] The timing switch can be composed of a 555 timer and a metal sheet. The metal sheet can be embedded on the surface of the housing and connected to the trigger pin of the 555 timer via a capacitor. After the tourniquet is tightened, the metal sheet can be touched with a finger, and the trigger pin of the 555 timer can receive the touch signal, triggering the 555 timer to start timing. When the time reaches the set time, the output pin of the 555 timer immediately outputs a high-level signal. A relay is connected to the output pin, and the relay can attract the switch connected in series between the drive motor 16 and the power supply, so that the power supply supplies power to the drive motor 16.

[0040] Embodiment 3

[0041] Embodiment 3 is substantially the same as Embodiment 1, and the main difference is that: the cutting device 3 includes a cutting table 4, a guillotine 5 and two piston cylinders 6. The two piston cylinders 6 are arranged side by side vertically on the cutting table 4. The two ends of the handle of the guillotine 5 are respectively connected to the piston rods of the two piston cylinders 6. The piston cylinder 6 is provided with a timing automatic exhaust valve 8, and the strap 2 passes between the guillotine 5 and the cutting table 4.

[0042] Specifically, as Figure 5 shown, the two piston cylinders 6 can be arranged side by side on the tabletop of the cutting table 4, and the two ends of the handle of the guillotine 5 can be respectively connected to the piston rods of the two piston cylinders 6. High-pressure gas is filled between the piston and the cylinder body of the piston cylinder 6, which can push up the piston rod, so that the guillotine 5 is suspended above the cutting table 4. The piston cylinder 6 is provided with a timing automatic exhaust valve 8, and the timing automatic exhaust valve 8 can be opened at a fixed time, so as to discharge the gas in the cylinder. After the gas is discharged, the piston rod can fall, so that the guillotine 5 falls to cut the strap 2.

[0043] The timed automatic exhaust valve 8 can be composed of a solenoid valve and a timing switch. The timing switch can be composed of a 555 timer and a metal sheet. The metal sheet can be embedded on the surface of the housing and connected to the trigger pin of the 555 timer through a capacitor. After the tourniquet is tightened, the metal sheet can be touched with a finger, and the trigger pin of the 555 timer can receive the touch signal to trigger the 555 timer to start timing. When the time reaches the set time, the output pin of the 555 timer immediately outputs a high-level signal. The output pin is connected to the coil of a relay. The normally open switch of the relay can be connected in series between the solenoid valve and the power supply. When the output pin outputs a high level, the coil of the relay can attract the normally open switch, so that the power supply supplies power to the solenoid valve to drive the solenoid valve to open and exhaust.

[0044] Embodiment 4

[0045] Embodiment 4 is substantially the same as Embodiment 1, and the main difference is that it further includes a blood pressure detector, which includes an armband 17 and a detection terminal 18, and the armband 17 is connected to the detection terminal 18.

[0046] Specifically, as Figure 6 shown, the blood pressure detector is the same as the existing blood pressure detector and is composed of an armband 17 and a detection terminal 18, where the detection terminal 18 can be arranged on the side wall of the housing and connected to the armband 17. The working principle of the blood pressure detector is the same as that of the existing blood pressure detector. After the tourniquet is tightened, the armband 17 can be tied to the tourniqueted limb, and the detection terminal 18 can inflate the armband 17 to make the armband 17 expand. The detection terminal 18 can detect the blood pressure through the pressure sensor arranged on the armband 17 and display the detection data to monitor the patient's blood pressure in real time.

[0047] In this embodiment, optionally, it further includes a timed alarm 19. The timed alarm 19 can be arranged in the housing and is composed of a timing switch and an alarm. The timing switch can be composed of a 555 timer and a metal sheet. The metal sheet can be embedded on the surface of the housing and connected to the trigger pin of the 555 timer through a capacitor. After the tourniquet is tightened, the metal sheet can be touched with a finger, and the trigger pin of the 555 timer can receive the touch signal to trigger the 555 timer to start timing. When the time reaches the set time, the output pin of the 555 timer immediately outputs a high-level signal. The output pin is connected to the coil of a relay. The normally open switch of the relay can be connected in series between the alarm and the power supply. When the output pin outputs a high level, the coil of the relay can attract the normally open switch, so that the power supply supplies power to the alarm, and the alarm can emit an alarm signal. The alarm can be a sound alarm, an optical alarm or an acoustic-optic alarm.

[0048] It should be understood that in the second, third, and fourth embodiments, the metal sheets can be the same metal sheet, and the metal sheets can be respectively connected to the trigger pins of three 555 timers. In this way, when the metal sheet is touched, different 555 timers can be triggered to start timing simultaneously. The time set by the 555 timer in the second and third embodiments can be the maximum usage time of the tourniquet, such as 9 hours. The time set by the 555 timer in the fourth embodiment can be the release time of the tourniquet, such as 1 hour.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present invention, and they should all be covered by the scope of the claims and the specification of the present invention.

Claims

1. A disposable tourniquet, comprising a buckle and a strap, one end of the strap is connected to the buckle, and is characterized in that, It also includes a cutting device, and the other end of the strap passes through the cutting device and then passes between the pressing plate and the base of the buckle; The cutting device comprises a cutting table, a guillotine, a suspension mechanism and a trigger mechanism. The guillotine is arranged directly above the cutting table through the suspension mechanism. The binding belt passes between the guillotine and the cutting table. The trigger mechanism is connected to the suspension mechanism and is used to trigger the suspension mechanism to release the guillotine. The suspension mechanism includes two piston cylinders, the guillotine is arranged above the cutting table via the two piston cylinders, and the two ends of the shank are respectively connected to the piston rods of the two piston cylinders, the piston cylinder is provided with an exhaust valve, and the exhaust valve is connected to the trigger mechanism, and the trigger mechanism triggers the exhaust valve to open; The exhaust valve is a pull-ring type exhaust valve, and the trigger mechanism includes a ratchet mechanism and a winding roller. The pawl of the ratchet mechanism is connected to the pressure plate through a hinge shaft. Pressing the pressure plate drives the pawl to turn the ratchet to rotate the ratchet. The ratchet is connected to the winding roller shaft, and the winding roller is connected to the pull ring of the exhaust valve via a connecting rope.

2. The disposable tourniquet according to claim 1, characterized in that, It also includes a driving motor and a timing switch. The driving shaft of the driving motor is connected to the winding roller shaft, and the timing switch is connected in series in the power supply circuit of the driving motor.

3. The disposable tourniquet according to claim 1, wherein, It also includes a limit platform, which is arranged between the cutting platform and the guillotine, and the two sides are respectively connected to the cylinder bodies of the two piston cylinders. The limit platform is provided with limit strip holes in the vertical direction, and the blade of the guillotine passes through the limit strip holes.

4. The disposable tourniquet according to claim 1, wherein, It also includes a blood pressure detector, which includes an armband and a detection terminal, and the armband is connected to the detection terminal.

5. The disposable tourniquet according to claim 1, wherein Also includes a timer alarm.

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