Disposable tourniquet
By designing a disposable blood pressure cuff that includes a protective shell, a reel, and a limiting component, automatic timing and alarm functions are achieved. This solves the problems of existing blood pressure cuffs requiring frequent unsealing and lacking timing functionality, thereby improving operational efficiency and the accuracy of blood sample testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE FIRST AFFILIATED HOSPITAL OF WENZHOU MEDICAL UNIV
- Filing Date
- 2026-03-24
- Publication Date
- 2026-04-21
AI Technical Summary
The current design of the compression band requires medical staff to frequently open and close it, which wastes time; the lack of a built-in timing function and reliance on manual memory can easily lead to compression timeouts, affecting work efficiency and the accuracy of blood sample test results.
A disposable pressure belt has been designed, comprising a protective shell, a reel, and a pressure belt assembly. It features a belt outlet, a limit component, and a rotary encoder to enable automatic timing and alarm functions. The use area is clearly defined through snap-fit holes and a buffer strip, simplifying the operation process.
It enables efficient and rapid completion of compression procedures, reduces vasospasm and puncture failure, ensures accurate timing, and lowers the workload of medical staff and the risk of blood sample distortion.
Smart Images
Figure CN224140874U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of medical assistive device technology, and in particular to a disposable pressure bandage. Background Technology
[0002] A tourniquet is a commonly used physical compression tool in the medical field. It is usually made of elastic material and some are equipped with adjustable buckles, Velcro, or snap-on fastening structures. It can apply controllable pressure to the limb by manually wrapping or inflating it, temporarily blocking local venous blood return and slowing down arterial blood flow, thus creating conditions for medical operations. Its core features are adjustable pressure and reversible action, avoiding permanent damage to limb tissues. It is widely used in clinical blood collection, intravenous infusion, surgical hemostasis, emergency care, and other scenarios.
[0003] Current cuff technologies mostly use individually sealed packaging. In actual clinical scenarios, the inefficiency of this design is amplified. For example, during peak morning blood collection times at health checkup centers, with hundreds of patients queuing up, medical staff need to use one hand to tear open the packaging of a new cuff after each puncture. This involves repeatedly performing the mechanical actions of removing the bag, tearing the opening, and taking out the cuff. In the rush, the cuff may fall onto the worktable or floor, requiring replacement and further slowing down the process, indirectly increasing the workload of medical staff. Meanwhile, existing tourniquets do not have a built-in timing function and rely entirely on medical staff to remember or carry an extra timer. In blood collection scenarios, if medical staff are taking care of multiple patients at the same time, they can easily forget the time for wrapping the tourniquet. Once the pressure exceeds 1 minute, the blood will accumulate locally, resulting in an increase in hematocrit and a false increase in potassium ion concentration, which will lead to inaccurate blood test results. This will not only require drawing blood from the patient again, but also increase the workload of the laboratory department for verification. In intravenous infusion scenarios, if the pressure is exceeded, it will cause local vascular spasm and damage to the vessel wall.
[0004] Therefore, it is necessary to propose a disposable pressure band to solve the above problems. Utility Model Content
[0005] This application provides a disposable tourniquet to address the issue that tourniquets in related technologies are mostly individually packaged, requiring medical staff to frequently unpack and remove them, which wastes a lot of time in scenarios with large blood collection or infusion volumes. At the same time, existing tourniquets do not have a built-in timing function and rely on medical staff to manually time them, resulting in reduced work efficiency.
[0006] This application provides a disposable pressure tape, including a protective shell, a roll disposed inside the protective shell, and a pressure tape assembly wound on the roll. The pressure tape assembly includes an array of pressure tapes. The protective shell has a tape outlet, through which the pressure tape on the roll is discharged for use.
[0007] The protective shell is provided with a first limiting component at the position corresponding to the outlet of the belt, which is used to fix one end of the pressure belt.
[0008] A second limiting component is provided on the end of the protective shell away from the outlet, which is used to tighten the other end of the pressure belt and apply pressure to the hand.
[0009] The technical solutions described above in this application embodiment have at least the following technical effects: Existing compression bandages require frequent unpacking of individual packaging, while this design allows for single-use by simply drawing and separating the bandage through the outlet, eliminating the need for repeated unpacking. Furthermore, the first limiting fixation and the second limiting tightening allow for quick and stable compression without additional skills, lowering the operational threshold and reducing problems such as vascular spasm and puncture failure caused by improper compression.
[0010] In this embodiment, the pressure band assembly has a uniform array of snap-fit holes. Both the first limiting assembly and the second limiting assembly include a fixed base and a snap-fit seat that is movably disposed in the fixed base by a spring. The snap-fit seat is provided with a snap-fit post for snapping with the snap-fit hole to limit the pressure band.
[0011] With this technical solution, existing compression bandages often need to be differentiated into adult or children's sizes, which is cumbersome to stock; this design, through the multi-position adjustment of the snap-fit hole, can be adapted to limbs of different thicknesses, from children's hands to adult arms, eliminating the need to prepare multiple specifications of products and simplifying consumable management.
[0012] In this embodiment, the pressure band assembly further includes a buffer band disposed on adjacent pressure bands. The buffer band has at least one snap-fit hole, and the first limiting component snaps into the snap-fit hole on the buffer band to isolate adjacent pressure bands.
[0013] Through this technical solution, the snap-fit hole on the buffer band cooperates with the snap-fit post of the first limiting component: when the current pressure band is removed, the first limiting snap-fit is engaged with the snap-fit hole on the buffer band, which not only fixes one end of the current pressure band, but also confines the next unused pressure band inside the protective shell, preventing it from being accidentally carried out with the current pressure band; the buffer band, as a separating unit between adjacent pressure bands, makes the usage area of each pressure band clearer, facilitates the separation of medical staff, and ensures strict adherence to the one-time use specification for one person.
[0014] In this embodiment, when the drum rotates, the rotation action is detected by a rotary encoder, and an electrical signal is sent to trigger a timing mechanism. When the preset time is reached, an alarm is automatically triggered.
[0015] This technical solution uses a rotary encoder that is mechanically coupled to a drum. When medical staff remove the tourniquet, the drum rotates, causing the encoder to rotate synchronously. The encoder converts the mechanical rotation into an electrical signal, which is then used as a timing start trigger command. No additional manual operation is required, achieving fully automatic linkage where timing begins as soon as the tourniquet is removed, ensuring that the timing start point is completely consistent with the actual usage time of the tourniquet.
[0016] In this embodiment, a buzzer is provided on the protective shell.
[0017] Through this technical solution, the buzzer, as the core alarm execution component, is electrically connected to the microprocessor and timing module. When the timing duration reaches the preset safety threshold, it receives the trigger signal from the microprocessor and emits a clear and distinguishable sound alarm, converting the electrical signal of excessive pressure into an intuitive auditory reminder, ensuring that medical staff can quickly perceive it.
[0018] In this embodiment, the protective shell is also equipped with a display screen for displaying the countdown time.
[0019] This technical solution allows the display screen to show the remaining time in real time, enabling medical staff to check the progress at any time during puncture preparation and operation, avoiding operational anxiety caused by unknown duration; at the same time, it can predict the risk of exceeding the time limit in advance, and actively release the pressure band when the countdown is close to 0, upgrading from passive alarm to active management, further reducing the risk of complications such as blood sample distortion and limb ischemia.
[0020] In this embodiment, the buffer band and the pressure band are different colors.
[0021] This technical solution uses color differences to create an intuitive visual dividing line, clearly distinguishing adjacent pressure bands from buffer bands. This allows medical staff to quickly identify the start and end boundaries of a single pressure band, avoiding confusion between multiple bands.
[0022] In this embodiment, a break point is provided at the connection between the buffer band and the adjacent pressure band to facilitate the separation of the pressure band and the buffer band.
[0023] This technical solution employs a weakened connection design at the break point, allowing medical staff to easily tear and separate the bandage using only their hands, without the need for scissors or other tools. This avoids the cumbersome operation or risk of tool contamination caused by relying on external tools. When using scissors to separate the tourniquet, the scissors are easily contaminated with the patient's blood and skin secretions. If disinfection is not thorough, they may become a medium for cross-infection. Attached Figure Description
[0024] Figure 1 A three-dimensional structural diagram of a disposable pressure bandage provided in an embodiment of this application. Figure 1 ;
[0025] Figure 2 A three-dimensional structural diagram of a disposable pressure bandage provided in an embodiment of this application. Figure 2 ;
[0026] Figure 3 This is a schematic diagram of the exploded structure of a disposable pressure bandage provided in an embodiment of this application;
[0027] Figure 4 The diagram shows the three-dimensional and cross-sectional structures of the first limiting component and the second limiting component provided in the embodiments of this application.
[0028] The following are the labeling elements in the figure:
[0029] 1. Protective shell; 11. Drum; 12. Tape outlet; 2. Pressure belt assembly; 21. Pressure belt; 22. Snap-fit hole; 23. Buffer belt; 24. Break point; 3. First limit assembly; 4. Second limit assembly; 41. Fixing base; 42. Spring; 43. Snap-fit base; 44. Snap-fit post; 5. Buzzer; 6. Display screen. Detailed Implementation
[0030] Current cuff technologies mostly use individually sealed packaging. In actual clinical scenarios, the inefficiency of this design is amplified. For example, during peak morning blood collection times at health checkup centers, with hundreds of patients queuing up, medical staff need to use one hand to tear open the packaging of a new cuff after each puncture. This involves repeatedly performing the mechanical actions of removing the bag, tearing the opening, and taking out the cuff. In the rush, the cuff may fall onto the worktable or floor, requiring replacement and further slowing down the process, indirectly increasing the workload of medical staff. Meanwhile, existing tourniquets do not have a built-in timing function and rely entirely on medical staff to remember or carry an extra timer. In blood collection scenarios, if medical staff are taking care of multiple patients at the same time, they can easily forget the time for wrapping the tourniquet. Once the pressure exceeds 1 minute, the blood will accumulate locally, resulting in an increase in hematocrit and a false increase in potassium ion concentration, which will lead to inaccurate blood test results. This will not only require drawing blood from the patient again, but also increase the workload of the laboratory department for verification. In intravenous infusion scenarios, if the pressure is exceeded, it will cause local vascular spasm and damage to the vessel wall.
[0031] Based on this, in order to improve the technical problems existing in related technologies, such as the fact that most blood pressure cuffs are individually packaged, requiring medical staff to frequently open and remove them, which wastes a lot of time in scenarios with large blood collection or infusion volumes; at the same time, existing blood pressure cuffs do not have a built-in timing function and rely on medical staff to manually time them, resulting in reduced work efficiency, the embodiments of this application provide the following solutions.
[0032] Please refer to the following: Figures 1 to 4This application provides a disposable pressure band. The disposable pressure band includes a protective shell 1, a roll 11 disposed inside the protective shell 1, and a pressure band assembly 2 wound on the roll 11. The pressure band assembly 2 includes an array of pressure bands 21. The protective shell 1 has a tape outlet 12, and the pressure bands 21 on the roll 11 are discharged for use through the tape outlet 12.
[0033] A first limiting component 3 is provided at the position corresponding to the outlet 12 of the protective shell 1 to fix one end of the pressure belt 21;
[0034] A second limiting component 4 is provided on the end of the protective shell 1 away from the outlet 12, which is used to tighten the other end of the pressure belt 21 to apply pressure to the hand.
[0035] The disposable compression bandage provided in this application embodiment eliminates the need for frequent unpacking of individual compression bandages 21. This design allows for single-use application by simply pulling out and separating the bandage through the outlet 12, eliminating the need for repeated unpacking. Furthermore, the first limiting fixation and the second limiting tightening allow for quick and stable compression without additional skills, lowering the operational threshold and reducing problems such as vasospasm and puncture failure caused by improper compression. The roll-type integrated storage replaces the scattered stacking of numerous individual packages, saving storage space for medical consumables. At the same time, medical staff no longer need to sort through individual packages one by one, simplifying the process of consumable retrieval and inventory.
[0036] In this embodiment, the pressure band assembly 2 has a uniform array of snap-fit holes 22. The first limiting assembly 3 and the second limiting assembly 4 both include a fixed base 41 and a snap-fit seat 43 that is movably disposed in the fixed base 41 by a spring 42. The snap-fit seat 43 is provided with a snap-fit post 44 for snapping with the snap-fit hole 22 to limit the pressure band 21.
[0037] With this configuration, the snap-fit holes 22 of the compression band assembly 2 are evenly arrayed, serving as adjustable positioning points to provide multiple evenly distributed snap-fit positions for the snap-fit posts 44, supporting adjustments to the fixation and tightening degree according to the patient's limb size and compression requirements. The first and second limiting components 4, spring 42, snap-fit seat 43, snap-fit post 44, and fixing seat 41: provide the installation base for the snap-fit structure and ensure the stability of the components; spring 42 and snap-fit seat 43: realize the elastic extension and retraction of snap-fit post 44. Pressing snap-fit seat 43 allows snap-fit post 44 to exit snap-fit hole 22 for easy position adjustment. After releasing, spring 42 returns to its original position, and snap-fit post 44 automatically snaps into snap-fit hole 22 to complete the fixation; snap-fit post 44 and snap-fit hole 22 cooperate: realize the limiting and fixation of the compression band 21 through physical buckle, and prevent the compression band 21 from sliding or loosening; existing compression bands 21 often need to be distinguished between adult and children's sizes, which is cumbersome to stock; this design can adapt to limbs of different thicknesses through the multi-position adjustment of snap-fit hole 22, from children's hands to adult arms, without the need to prepare multiple specifications of products, simplifying consumable management.
[0038] In this embodiment, the pressure band assembly 2 further includes a buffer band 23 disposed on an adjacent pressure band 21. The buffer band 23 has at least one snap-fit hole 22. The first limiting assembly 3 snaps into the snap-fit hole 22 on the buffer band 23 to isolate the adjacent pressure band 21.
[0039] With this configuration, the snap-fit hole 22 on the buffer band 23 engages with the snap-fit post 44 of the first limiting component 3: when the current pressure band 21 is removed, the first limiting component snaps into the snap-fit hole 22 on the buffer band 23, which not only fixes one end of the current pressure band 21, but also confines the next unused pressure band 21 within the protective shell 1, preventing it from being accidentally carried out with the current pressure band 21; the buffer band 23 serves as a separating unit for adjacent pressure bands 21, making the usage range of each pressure band 21 clearer, facilitating separation of medical staff and ensuring strict adherence to the one-time use standard for each person.
[0040] In this embodiment, when the drum 11 rotates, the rotation action is detected by the rotary encoder, and the rotation is triggered by an electrical signal to trigger a timing. When the preset time is reached, an alarm is automatically triggered.
[0041] With this setup, the rotary encoder is mechanically coupled to the reel 11. When medical staff remove the tourniquet 21, the reel 11 rotates, causing the encoder to rotate synchronously. The encoder converts the mechanical rotation into an electrical signal, which directly serves as the timing start trigger command. No additional manual operation is required, achieving fully automatic linkage where timing begins as soon as the tourniquet 21 is removed. This ensures that the timing start point is completely consistent with the actual usage time of the tourniquet 21. Timing is triggered entirely by the removal action, without any manual intervention, avoiding human error of forgetting to start the timing. The overtime alarm is a mandatory reminder, ensuring timely alerts even if medical staff are simultaneously handling multiple patients or focusing on the puncture procedure. This technically eliminates the risk of compression exceeding the time limit. For example, during blood collection, compression can be strictly controlled to ≤60 seconds to avoid distorted test results caused by increased hematocrit and false electrolyte abnormalities. In emergency scenarios, compression time can be precisely controlled to ≤90 minutes (lower limbs) to prevent ischemia and necrosis of distal limb tissues.
[0042] In this embodiment, a buzzer 5 is provided on the protective shell 1.
[0043] With this setup, the buzzer 5 serves as the core alarm execution component, electrically connected to the microprocessor and timing module. When the timing duration reaches the preset safety threshold, it receives the trigger signal from the microprocessor and emits a clear and distinguishable audible alarm, converting the electrical signal of excessive pressure into an intuitive auditory reminder, ensuring that medical staff can quickly perceive it.
[0044] In this embodiment, the protective shell 1 is also provided with a display screen 6 for displaying the countdown time.
[0045] With this setup, the display screen 6 shows the remaining time in real time, allowing medical staff to check the progress at any time during puncture preparation and operation, avoiding operational anxiety caused by unknown duration. At the same time, it can predict the risk of exceeding the time limit in advance, and actively release the pressure band 21 when the countdown is close to 0, upgrading from passive alarm to active management, further reducing the risk of complications such as blood sample distortion and limb ischemia. The visual countdown eliminates the information gap regarding the duration of compression, reducing anxiety. Precise time management reduces the risk of blood sample re-collection and limb injury, improving the safety and comfort of medical treatment.
[0046] In this embodiment, the buffer band 23 and the pressure band 21 are different colors.
[0047] This design uses color differences to create an intuitive visual dividing line, clearly distinguishing adjacent pressure bands 21 from buffer bands 23. This allows medical staff to quickly identify the start and end boundaries of a single pressure band 21, avoiding confusion between multiple bands.
[0048] In this embodiment, a breakpoint 24 is provided at the connection between the buffer band 23 and the adjacent pressure band 21 to facilitate the separation between the pressure band 21 and the buffer band 23.
[0049] With this design, the breakpoint 24 employs a weakened connection, allowing medical staff to easily tear and separate the bandage using only their hands, without the need for scissors or other tools. This avoids the cumbersome operation or tool contamination risks associated with relying on external tools. When using scissors to separate the tourniquet 21, the scissors are easily contaminated with the patient's blood and skin secretions. If not thoroughly disinfected, they could become a medium for cross-infection. This risk is even higher in primary healthcare institutions or mobile blood collection scenarios where scissors are not disinfected in a timely manner. Breakpoint 24 enables tool-free separation, eliminating the need to share scissors and other instruments, thus preventing tool-mediated cross-infection risks at the source. This fully complies with the core requirement of one person, one use, one disposal in hospital infection control. At the same time, it reduces the workload of medical staff in disinfecting and storing tools, further simplifying hospital infection control procedures.
[0050] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A single-use compression bandage, characterized in that: It includes a protective shell (1), a spool (11) disposed inside the protective shell (1), and a pressure tape assembly (2) wound on the spool (11). The pressure tape assembly (2) includes pressure tapes (21) arranged in an array. The protective shell (1) has a tape outlet (12). The pressure tapes (21) on the spool (11) are discharged and used through the tape outlet (12). A first limiting component (3) is provided at the position corresponding to the outlet (12) of the protective shell (1) to fix one end of the pressure pulse belt (21); The protective shell (1) is provided with a second limiting component (4) at one end away from the outlet (12), which is used to tighten the other end of the pressure belt (21) to apply pressure to the hand.
2. The disposable pressure bandage of claim 1 wherein: The pressure band assembly (2) has a uniform array of snap-fit holes (22). The first limiting assembly (3) and the second limiting assembly (4) each include a fixed seat (41). A snap-fit seat (43) is movably disposed in the fixed seat (41) by a spring (42). A snap-fit post (44) is provided on the snap-fit seat (43) for snapping with the snap-fit hole (22) to limit the pressure band (21).
3. The disposable pressure bandage of claim 1 wherein: The pressure band assembly (2) also includes a buffer band (23) disposed on the adjacent pressure band (21). The buffer band (23) has at least one snap-fit hole (22). The first limiting component (3) snaps into the snap-fit hole (22) on the buffer band (23) to isolate the adjacent pressure band (21).
4. The disposable pressure bandage according to claim 1 or 2 or 3, characterized in that: When the drum (11) rotates, the rotation action is detected by the rotary encoder, and the rotation is triggered by the electrical signal to trigger the timing. When the preset time is reached, the alarm is automatically triggered.
5. The disposable pressure bandage of claim 4 wherein: A buzzer (5) is provided on the protective shell (1).
6. The disposable pressure bandage of claim 5 wherein: The protective shell (1) is also equipped with a display screen (6) for displaying the time.
7. The disposable pressure bandage of claim 3 wherein: The buffer band (23) is a different color from the pressure band (21).
8. The disposable pressure bandage of claim 3, wherein: A breakpoint (24) is provided at the connection between the buffer band (23) and the adjacent pressure band (21) to facilitate the separation between the pressure band (21) and the buffer band (23).