A rapid hemostatic device for emergency care
By incorporating an air cushion, pneumatic rod, and amplitude sensor into the spun tourniquet, precise tightening of the tourniquet and monitoring of hemostasis time were achieved. This solved the problem of inconsistent tightening of the spun tourniquet, improved the hemostasis effect, and prevented limb necrosis.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- THE FIRST AFFILIATED HOSPITAL OF ARMY MEDICAL UNIV
- Filing Date
- 2025-06-18
- Publication Date
- 2026-05-08
AI Technical Summary
Existing spin-compression tourniquets lack segmented tightening function, resulting in inconsistent tightening between different users and reducing the hemostatic effect.
A rapid hemostasis device including a bandage and a compression component was designed. The device utilizes an air cushion, a pneumatic rod, and an amplitude sensor to achieve precise tightening of the bandage, and monitors the hemostasis time through a timing component to prevent limb necrosis.
The tightening precision of the bandage was improved, ensuring hemostasis and prompting medical staff to untie it after the time limit to prevent limb necrosis.
Smart Images

Figure CN120501472B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of hemostatic devices, and more specifically, to a rapid hemostatic device for emergency care. Background Technology
[0002] As the most widely used tourniquet today, the spin-compression tourniquet relies on its strong contractility to quickly compress blood vessels and achieve the effect of blocking blood flow. Compared with traditional gauze tourniquets, the spin-compression tourniquet has two characteristics: firstly, it is fast and can achieve hemostasis within seconds; secondly, it can be operated by a single person, allowing one to quickly stop bleeding without the assistance of others.
[0003] However, since the tightness of a tourniquet varies depending on the user, most existing spin-type tourniquets lack segmented tightening functionality. Using the same method to tighten and stop bleeding with the tourniquet can easily lead to low precision in adjusting the tourniquet tightness, thus reducing the hemostatic effect of the device. Summary of the Invention
[0004] This invention provides a rapid hemostasis device for emergency care, which solves the problem that the hemostasis effect of existing tourniquets is reduced because the tightness of the tourniquet varies when it is used by different users and most existing spinning tourniquets lack segmented tightening function.
[0005] To achieve the above objectives, the present invention provides the following technical solution:
[0006] An emergency care rapid hemostasis device includes a bandage and a compression assembly. The compression assembly includes a pair of air cushions disposed on the inner side of the bandage, with the two air cushions respectively disposed on both sides of the bandage. Multiple ventilation holes are evenly distributed on each air cushion. One end of each air cushion is connected to a fixing tube, and the two fixing tubes are connected to each other via a pipe. The fixing tube is fixedly mounted on the bandage. An air guide tube is connected to the outer side of each fixing tube. A pneumatic rod is connected to the free end of the air guide tube. A U-shaped rod is connected to the tail end of the push rod inside the pneumatic rod. A timing component is connected to the free end of the U-shaped rod via a locking assembly.
[0007] Preferably, the locking assembly includes a first wedge block connected to the free end of the U-shaped rod, a fixing plate provided on the outside of the strap, a connecting seat connected to the fixing plate by a first spring, a second wedge block connected to the outside of the connecting seat, and the first wedge block and the second wedge block making contact with each other by an inclined surface.
[0008] Preferably, the free end of the connector is provided with an insert plate, one end of the insert plate is provided with a rotating plate, and the locking plates on both sides of the rotating plate are slidably locked on the outside of the insert plate. The timing component includes a dial provided on the outside of the strap, and the rotating plate is slidably locked on the dial.
[0009] Preferably, the rotating plate is coaxially connected to a limit button, and a pointer is rotated and locked inside the dial, with the pointer locked within the limit button.
[0010] Preferably, the pointer rotates at a speed of degrees per hour, and the dial is divided into three areas: a yellow area, an orange area, and a red area. The central angle of the yellow and orange areas is degrees, and the areas are arranged in a clockwise direction: yellow, orange, and red.
[0011] Preferably, an indicator light is provided on the outer side of the strap, and the indicator light displays the same color as the area where the pointer is located.
[0012] Preferably, one end of the strap is connected to a head, the outer side of the strap is provided with a rough surface and an adhesive surface, the free end of the strap is inserted into the head, and the adhesive surface of the free end of the strap is adhered to the outer side of the rough surface.
[0013] Preferably, a storage groove is provided on the inner side of the strap, and a second spring is provided in the storage groove. The free end of the second spring is connected to an amplitude sensor through a base, and the inner side of the amplitude sensor is higher than the inner side of the strap.
[0014] Preferably, the telescopic belt has a guide wheel rotatably engaged at one end near the belt head, a pull rope is engaged on the outside of the guide wheel, one end of the pull rope is connected to the binding strap, and the free end of the pull rope is connected to a winder disposed on the outside of the binding strap.
[0015] Preferably, a pair of baffles are provided on the outer side of the strap, and a limiting band is provided at one end of each baffle. The two ends of the limiting band are respectively provided with an adhesive surface and a rough surface. A retaining ring is provided at the top of the other baffle, and the inner height of the retaining ring is equal to the thickness of the limiting band.
[0016] The principle and beneficial effects of this technical solution:
[0017] (1) The clamping component set in this invention can further fine-tighten the bandage after the initial tightening of the bandage, so that the bandage can be tightened a second time under the guidance of the sensor, thereby improving the tightening accuracy of the bandage and avoiding poor hemostasis. After the bandage is tightened on the patient's limb, the pneumatic rod is driven to inflate the air tube. The air tube will then inflate the two air cushions through the two fixed tubes. During the inflation of the air cushions, the bandage will gradually press against the patient's skin. At the same time, the amplitude sensor connected to the base through the second spring in the storage groove inside the bandage will keep monitoring the patient's pulse. When the air cushions tighten, the pulse monitored by the amplitude sensor will gradually weaken. When the pulse monitored by the amplitude sensor is lower than the threshold, the pneumatic rod will be stopped, and the bandage tightening will be completed.
[0018] (2) The timing component set in this invention can time the patient's hemostasis time, and record the duration of the overtime after it expires and prompt medical staff to untie the binding to avoid limb necrosis. After the pneumatic rod is started, the push rod set in the pneumatic rod will drive the U-shaped rod connected to its tail end to move. The first wedge block connected to the free end of the U-shaped rod will move synchronously. The first wedge block will move backward under the action of the first spring connected to the connecting seat through the second wedge block with the inclined surface, so that the insert plate and the rotating plate locked on the connecting seat will move backward synchronously until the limit button coaxially connected to the rotating plate disengages from the contact with the pointer. At this time, the pointer will start to rotate. When the pointer rotates a full circle, the indicator light will start. 20 minutes before the timeout, the indicator light will change color every 10 minutes and correspond to the color of the area where the pointer is located to reflect the degree of timeout and prompt medical staff to carry out further hemostasis treatment to avoid limb necrosis.
[0019] (3) The retractor provided in this invention can initially tighten the bandage to prevent it from slipping off the patient's limb. When a large number of people need to be hemostatically treated, medical staff can insert the free end of the bandage into the head of the bandage in advance, so that the adhesive side of the free end of the bandage is attached to the outside of the rough side, and the excess length of the bandage is inserted into a pair of baffles on the outside of the bandage. The limiting band at one end of the baffle is inserted into the retaining ring at the top of the other baffle and the limiting bandage is tightened. When a patient needs to be hemostatically treated, the bandage is put on the patient's limb to be hemostatically treated, and then the retractor is started to tighten the pull rope. At this time, the pull rope will drive the guide wheel at one end of the telescopic belt to rotate and move, so that the telescopic belt is shortened until the pulling force of the retractor is equal to the tension of the bandage. At this time, the initial tightening of the bandage is completed. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;
[0021] Figure 2 This is a schematic diagram of the disassembled structure of the present invention;
[0022] Figure 3 for Figure 2 Enlarged structural diagram of region A in the middle;
[0023] Figure 4 for Figure 2 A magnified structural diagram of region B in the middle;
[0024] Figure 5 This is a schematic diagram of a portion of the structure of the present invention after being cut apart;
[0025] The reference numerals in the accompanying drawings of the instruction manual include: 1. Telescopic belt; 2. Belt head; 3. Strap; 4. Storage slot; 5. Limit button; 6. Insert plate; 7. Indicator light; 8. Locking plate; 9. Pointer; 10. Turning plate; 11. Second wedge block; 12. Connecting seat; 13. First spring; 14. Fixing plate; 15. U-shaped rod; 16. Limiting belt; 17. Air cushion; 18. Vent hole; 19. First wedge block; 20. Pneumatic rod; 21. Air guide tube; 22. Fixing tube; 23. Guide wheel; 24. Amplitude sensor; 25. Base; 26. Pull rope; 27. Winder; 28. Snap ring; 29. Baffle; 30. Second spring; 31. Dial. Detailed Implementation
[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:
[0027] Example:
[0028] like Figures 1 to 5 As shown, the present invention provides a rapid hemostasis device for emergency nursing, including a bandage 3 and a clamping assembly. The clamping assembly includes a pair of air cushions 17 disposed on the inner side of the bandage 3. The two air cushions 17 are respectively disposed on both sides of the bandage 3. Multiple ventilation holes 18 are evenly opened on the air cushions 17. One end of the two air cushions 17 is connected to a fixing tube 22. The two fixing tubes 22 are connected to each other through a pipe. The fixing tube 22 is fixedly disposed on the bandage 3. An air guide tube 21 is connected to the outer side of any fixing tube 22. A pneumatic rod 20 is connected to the free end of the air guide tube 21. A U-shaped rod 15 is connected to the tail end of the push rod inside the pneumatic rod 20. A timing component is connected to the free end of the U-shaped rod 15 through a locking assembly.
[0029] like Figure 3 and Figure 4 As shown, the locking assembly includes a first wedge block 19 connected to the free end of a U-shaped rod 15, a fixing plate 14 disposed on the outside of the strap 3, a connecting seat 12 connected to the fixing plate 14 via a first spring 13, a second wedge block 11 connected to the outside of the connecting seat 12, and the first wedge block 19 and the second wedge block 11 are in contact via an inclined surface.
[0030] like Figure 3 and Figure 5 As shown, the free end of the connector 12 is provided with an insert plate 6, and one end of the insert plate 6 is provided with a rotating plate 10. The locking plates 8 on both sides of the rotating plate 10 are slidably locked on the outside of the insert plate 6. The timing component includes a dial 31 on the outside of the strap 3, and the rotating plate 10 is slidably locked on the dial 31.
[0031] like Figure 3 and Figure 5 As shown, the rotating plate 10 is coaxially connected to the limit button 5, and the dial 31 is fitted with a pointer 9, which is locked inside the limit button 5.
[0032] like Figure 3 and Figure 5 As shown, the pointer 9 rotates at 360 degrees per hour. The dial 31 is divided into three areas: a yellow area, an orange area, and a red area. The central angle of the yellow and orange areas is 60 degrees. The areas are arranged in a clockwise direction: yellow, orange, and red.
[0033] like Figure 1 and Figure 3 As shown, an indicator light 7 is provided on the outside of the strap 3, and the color of the indicator light 7 is the same as the area where the pointer 9 is located.
[0034] The timing component can time the patient's hemostasis time and record the duration of the overtime after it expires, prompting medical staff to untie the restraints to prevent limb necrosis. After the pneumatic rod 20 is activated, the push rod inside the pneumatic rod 20 will drive the U-shaped rod 15 connected to its tail end to move. The first wedge block 19 connected to the free end of the U-shaped rod 15 will move synchronously. The first wedge block 19 will move backward under the action of the first spring 13 connected to the connecting seat 12 through the second wedge block 11 with the inclined surface. This causes the insert plate 6 and the rotating plate 10 locked on the connecting seat 12 to move backward synchronously until the limit button 5 coaxially connected to the rotating plate 10 disengages from the pointer 9. At this time, the pointer 9 will start to rotate. When the pointer 9 has rotated a full circle, the indicator light 7 will be activated. For the first 20 minutes of the timeout, the indicator light 7 will change color every 10 minutes and correspond to the color of the area where the pointer 9 is located to reflect the degree of timeout and prompt medical staff to carry out further hemostasis treatment to prevent limb necrosis.
[0035] like Figure 1 As shown, one end of the strap 3 is connected to the head 2. The outer side of the strap 3 is provided with a rough surface and an adhesive surface. The free end of the strap 3 is inserted into the head 2, and the adhesive surface of the free end of the strap 3 is attached to the outer side of the rough surface.
[0036] like Figure 1 , Figure 2 and Figure 5 As shown, a storage slot 4 is provided on the inner side of the strap 3, and a second spring 30 is provided in the storage slot 4. The free end of the second spring 30 is connected to an amplitude sensor 24 through the base 25. The inner side of the amplitude sensor 24 is higher than the inner side of the strap 3.
[0037] like Figure 1 and Figure 5 As shown, a guide wheel 23 is rotatably mounted on one end of the telescopic belt 1 near the head 2. A pull rope 26 is mounted on the outside of the guide wheel 23. One end of the pull rope 26 is connected to the binding strap 3, and the free end of the pull rope 26 is connected to the winding device 27 set on the outside of the binding strap 3.
[0038] The retractor 27 can initially tighten the bandage 3 to prevent it from slipping off the patient's limb. When a large number of people need to be hemostatically treated, medical staff can insert the free end of the bandage 3 into the head 2 in advance, so that the adhesive side of the free end of the bandage 3 is attached to the outside of the rough side, and the excess length of the bandage 3 is inserted into a pair of baffles 29 set on the outside of the bandage 3. The limiting band 16 set at one end of the baffle 29 is inserted into the retaining ring 28 set at the top of the other baffle 29 and the limiting band 16 is tightened. When a patient needs to stop bleeding, the bandage 3 is put on the patient's limb to be hemostatically treated, and then the retractor 27 is activated to tighten the pull rope 26. At this time, the pull rope 26 will drive the guide wheel 23 set at one end of the telescopic belt 1 to move, so that the telescopic belt 1 is shortened until the tension of the retractor 27 is equal to the tension of the bandage 3. At this time, the initial tightening of the bandage 3 is completed.
[0039] like Figure 1 , Figure 4 and Figure 5 As shown, a pair of baffles 29 are provided on the outer side of the strap 3. A limiting band 16 is provided at one end of each baffle 29. The two ends of the limiting band 16 are respectively provided with an adhesive surface and a rough surface. A retaining ring 28 is provided at the top of the other baffle 29. The inner height of the retaining ring 28 is equal to the thickness of the limiting band 16.
[0040] The specific usage and function of this embodiment are as follows:
[0041] The clamping component in this invention can further fine-tighten the bandage 3 after its initial tightening, allowing the bandage 3 to tighten a second time under the guidance of the sensor, thereby improving the tightening accuracy of the bandage 3 and avoiding poor hemostasis. After the bandage 3 is tightened on the patient's limb, the pneumatic rod 20 is driven to inflate the air tube 21. The air tube 21 then inflates the two air cushions 17 through the two fixed tubes 22. During the inflation of the air cushions 17, the bandage 3 gradually presses against the patient's skin. At the same time, the amplitude sensor 24, connected to the base 25 by the second spring 30 in the storage groove 4 inside the bandage 3, keeps monitoring the patient's pulse. The tightening of the air cushions 17 will gradually weaken the pulse detected by the amplitude sensor 24. When the pulse detected by the amplitude sensor 24 is lower than the threshold, the pneumatic rod 20 is stopped, and the tightening of the bandage 3 is completed.
[0042] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A rapid hemostasis device for emergency nursing, characterized in that: The device includes a strap (3) and a clamping assembly. The clamping assembly includes a pair of air cushions (17) disposed on the inner side of the strap (3). The two air cushions (17) are respectively disposed on both sides of the strap (3). Multiple ventilation holes (18) are evenly provided on the air cushions (17). One end of the two air cushions (17) is connected to a fixing tube (22). The two fixing tubes (22) are connected to each other through a pipe. The fixing tube (22) is fixedly disposed on the strap (3). An air guide tube (21) is connected to the outside of any fixing tube (22). A pneumatic rod (20) is connected to the free end of the air guide tube (21). A U-shaped rod (15) is connected to the end of the push rod inside the pneumatic rod (20). A timing component is connected to the free end of the U-shaped rod (15) through a locking assembly. The locking assembly includes a first wedge block (19) connected to the free end of the U-shaped rod (15), a fixing plate (14) provided on the outside of the strap (3), a connecting seat (12) connected to the fixing plate (14) by a first spring (13), a second wedge block (11) connected to the outside of the connecting seat (12), and the first wedge block (19) and the second wedge block (11) are in contact by an inclined surface; The connector (12) has a plug plate (6) at its free end, and a rotating plate (10) is provided at one end of the plug plate (6). The locking plates (8) on both sides of the rotating plate (10) are slidably locked on the outside of the plug plate (6). The timing component includes a dial (31) provided on the outside of the strap (3), and the rotating plate (10) is slidably locked on the dial (31). The inner side of the strap (3) is provided with a storage groove (4), and a second spring (30) is provided in the storage groove (4). The free end of the second spring (30) is connected to an amplitude sensor (24) through a base (25). The inner side of the amplitude sensor (24) is higher than the inner side of the strap (3).
2. The rapid hemostasis device for emergency nursing according to claim 1, characterized in that: The rotating plate (10) is coaxially connected to the limit button (5), and the dial (31) is fitted with a pointer (9), which is fitted inside the limit button (5).
3. The rapid hemostasis device for emergency nursing according to claim 2, characterized in that: The pointer (9) rotates at 360 degrees per hour. The dial (31) is divided into three areas, including a yellow area, an orange area and a red area. The central angle of the yellow area and the orange area is 60 degrees. The areas are arranged in a clockwise direction, with yellow, orange and red.
4. The rapid hemostasis device for emergency nursing according to claim 3, characterized in that: An indicator light (7) is provided on the outside of the strap (3), and the color of the indicator light (7) is the same as that of the area where the pointer (9) is located.
5. The rapid hemostasis device for emergency nursing according to claim 4, characterized in that: One end of the strap (3) is connected to a head (2). The outer side of the strap (3) is provided with a rough surface and an adhesive surface. The free end of the strap (3) is inserted into the head (2), and the adhesive surface of the free end of the strap (3) is attached to the outer side of the rough surface.
6. The rapid hemostasis device for emergency nursing according to claim 5, characterized in that: The telescopic belt (1) has a guide wheel (23) mounted on one end near the belt head (2). A pull rope (26) is mounted on the outside of the guide wheel (23). One end of the pull rope (26) is connected to the binding strap (3). The free end of the pull rope (26) is connected to the winding device (27) located on the outside of the binding strap (3).
7. The rapid hemostasis device for emergency nursing according to claim 6, characterized in that: A pair of baffles (29) are provided on the outside of the strap (3). A limiting band (16) is provided at one end of each baffle (29). An adhesive surface and a rough surface are provided at both ends of the limiting band (16). A retaining ring (28) is provided at the top of the other baffle (29). The height of the inner side of the retaining ring (28) is equal to the thickness of the limiting band (16).
Citation Information
Patent Citations
Wound hemostasis device for emergency department
CN217244614U
Portable rapid tourniquet
CN218922706U