Intermittent heating and pressurizing anti-thrombus device for lower limb veins
By designing an intermittent heating and pressurization antithrombotic device for lower limb veins, the combination of an air pump and a heating layer solves the problem of insufficient heating in existing devices, achieving dynamic pressurization and temperature regulation, promoting blood circulation, and preventing deep vein thrombosis.
Patent Information
- Application Number
- CN202421772799.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-07-25
AI Technical Summary
Existing devices for preventing lower extremity deep vein thrombosis under anesthesia lack heating functions, causing discomfort in the patient's lower extremities and affecting blood flow, which is detrimental to treatment.
A device for intermittent heating and pressurization of lower limb veins to prevent thrombosis was designed. It uses an air pump to intermittently inflate and deflate the veins, and combines this with a heating layer to increase the temperature, thereby creating circulatory pressure, promoting blood circulation, and preventing deep vein thrombosis.
By dynamically applying pressure and heating, it increases the blood flow rate in the lower limbs, reduces the risk of deep vein thrombosis, and is suitable for surgical patients and patients who are bedridden for a long time.
Smart Images
Figure CN223654143U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical nursing equipment technical field, concretely relates to a lower limb venous intermittent heating pressurization antithrombotic device. BACKGROUND
[0002] Deep Vein Thrombsis (DVT): refers to the blood in the lower limb deep venous system is not normal coagulation, blockage of lumen, cause venous reflux disorder a kind of disease, is the main complication of major operation patient, paralysis and old and weak chronic disease needs perennial bedridden patient. Because of blood clot in deep vein formation, DVT usually occurs in leg. Blood clotting phenomenon often occurs in calf or thigh, and can make the deep vein located in calf or thigh muscle partial or overall obstruction, so that blood cannot flow.
[0003] At present, the instrument equipment commonly used for preventing and treating lower limb venous thrombosis in anesthesia selects few pressure values, and the device for preventing and treating lower limb venous thrombosis only has pressurization antithrombotic, so that the existing intermittent inflation pressurization pump for preventing and treating lower limb venous thrombosis in anesthesia lacks the function of heating the device when in use, so that the lower limbs of the patient are uncomfortable, or the blood flow of the lower limbs of the patient is affected due to external temperature, which is not conducive to the treatment of the patient. UTILITY MODEL CONTENT
[0004] In view of the deficiencies of the prior art, the utility model provides a lower limb venous intermittent heating pressurization antithrombotic device, which overcomes the deficiencies of the prior art, is reasonable in design, inflates, extrudes and deflates the gasbag sheath in order and rhythm by the air pump, uses intermittent pneumatic pressure, repeatedly and dynamically pressurizes, and monitors and keeps the pressure unchanged in real time, forms the circulating pressure from the distal end of the limb to the proximal end of the limb tissue, helps to prevent the formation of deep vein thrombosis. In addition, the heating layer in the middle layer of the sheath is used as a heating component, so that the temperature of the pressurized gasbag can be improved, the temperature of the lower limbs of the patient can be improved, the blood flow rate of the lower limbs of the patient can be improved, blood circulation can be promoted and improved, and the formation of lower limb venous thrombosis can be prevented.
[0005] To achieve the above object, the utility model realizes the following technical scheme:
[0006] The lower limb intermittent warming and pressurizing anti-thrombus device comprises a body and a sheath, an inflation interface and a power socket are arranged on the outer side of the body, a gas pump and a power supply are arranged in the body, the output end of the gas pump is connected with one end of a first gas pipe, the other end of the first gas pipe is connected with one end of an electromagnetic valve, and the other end of the electromagnetic valve is connected with the inflation interface; an air inlet is arranged on the surface of the sheath, the air inlet is connected with one end of a second gas pipe, the other end of the second gas pipe is provided with a plug-in part, the air path joint in the plug-in part is matched with the inflation interface, and the circuit joint in the plug-in part is matched with a signal control line interface.
[0007] The inner layer of the sheath is a high polymer material layer, the middle layer is a heating layer, and the outer layer is a waterproof textile fiber fabric; the inner layer, the middle layer and the outer layer of the sheath are connected and fixed with each other.
[0008] Preferably, the heating layer is a graphene heating layer or an electric heating wire heating layer.
[0009] Preferably, the electromagnetic valve is a three-way electromagnetic valve, the air inlet of the three-way electromagnetic valve is connected with the first gas pipe, the first gas outlet of the three-way electromagnetic valve is connected with the inflation interface, and the second gas outlet of the three-way electromagnetic valve is connected with the outside; when the electromagnetic valve coil is electrified, the air inlet and the first gas outlet are connected; when the electromagnetic valve coil is de-energized, the first gas outlet and the second gas outlet are connected.
[0010] Preferably, a pressure relief valve is arranged on the connecting pipeline between the electromagnetic valve and the inflation interface.
[0011] Preferably, a gas valve is arranged on the first gas pipe, and a control handle of the gas valve is located on the outer side of the body.
[0012] Preferably, magic tape hair surfaces are arranged at both ends of the inner side of the sheath, and a magic tape thorn surface is arranged at one end of the outer side of the sheath.
[0013] Preferably, the sheath comprises thigh and calf air bags and single calf air bags, and the thigh and calf air bags and the single calf air bags are both double gas cavities, and air inlets are arranged on the outer surfaces of the gas cavities.
[0014] Preferably, a control touch screen is arranged on the outer surface of the body, a power switch and an emergency stop switch are arranged on the body, a controller is arranged in the inner cavity of the body, the controller is connected with the power supply through the power switch, the output port of the control touch screen is connected with the input port of the controller, and the output port of the controller is connected with the electromagnetic valve and the gas pump through the emergency stop switch.
[0015] Preferably, a pressure sensor is mounted on the air inlet nozzle, the sensing end of the pressure sensor is located at the inner side of the air inlet nozzle, and the signal output end of the pressure sensor is connected to the controller through a signal control line interface.
[0016] Preferably, a temperature sensor is mounted in the sheath, and the signal output end of the temperature sensor is connected to the controller through a signal control line interface.
[0017] The utility model provides a kind of lower limb venous intermittent heating pressurization antithrombotic device.It has the following beneficial effects: by air pump, sheath is inflated, deflated in order rhythm, intermittent pneumatic pressure is used, repeatedly, dynamic pressurization, and real-time monitoring, pressure is kept constant, form the circulation pressure to the limb tissue from distal end to proximal end, after repeatedly pressurizing the limb, pressure relief, promote venous blood and lymphatic fluid reflux, reduce the pressure in extremity tissue, accelerate blood flow velocity, reduce blood stasis state, help to prevent the formation of deep vein thrombosis.In addition, the heating layer of the middle layer of sheath as heating component, by the heating mode of membrane layer, it can have greater heating area, heating is more uniform, heating rate is fast, so as to improve the temperature of sheath, facilitate to improve the temperature of the lower limbs of patient, improve the blood flow rate of the lower limbs of patient, for surgical patient, bedridden patient and low temperature, heat dissipation, lower limb is easy to form thrombus patient, its effect is better. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical scheme in the utility model or prior art, the following will be briefly introduced the drawings needed to be used in prior art description.
[0019] Figure 1 It is the front structure schematic view of the utility model;
[0020] Figure 2 It is the side structure schematic view of the utility model;
[0021] Figure 3 It is Figure 1 The sectional structure schematic view of A-A in it;
[0022] Figure 4 It is the structure schematic view of big and small leg air bag in the utility model;
[0023] Figure 5 It is the structure schematic view of single small leg air bag in the utility model;
[0024] Mark explanation in drawing:
[0025] 1. Body; 2. Sheath; 3. Inflation port; 4. Power socket; 5. Air pump; 6. Signal control line interface; 8. First air tube; 9. Solenoid valve; 10. Air inlet; 11. Second air tube; 12. Connector; 13. Velcro strap; 15. Control touch screen; 16. Power switch; 17. Emergency stop switch; 18. Controller; 19. Air valve; 21. Leg airbags (lower and upper legs); 22. Single lower leg airbag. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings.
[0027] Example 1, as Figures 1-5 As shown, a lower limb intermittent heating and pressurizing antithrombotic device includes a body 1 and a sheath 2. The outer side of the body 1 is equipped with an inflation port 3, a signal control line interface 6, and a power socket 4. Inside the body 1, an air pump 5 and a power supply are installed. The output end of the air pump 5 is connected to one end of a first air tube 8, and the other end of the first air tube 8 is connected to one end of a solenoid valve 9. The other end of the solenoid valve 9 is connected to the inflation port 3. An air inlet 10 is provided on the surface of the sheath 2, and the air inlet 10 is connected to one end of a second air tube 11. The other end of the second air tube 11 is provided with a connector 12, which matches the inflation port 3. A pressure sensor is installed inside the sheath, and the signal output end of the pressure sensor is connected to an electrical connector inside the connector, which matches the signal control line interface 6.
[0028] The inner layer of the sheath 2 is a polymer material layer, the middle layer is a heating layer, and the outer layer is a waterproof textile fiber fabric; the inner, middle, and outer layers of the sheath 2 are heat-sealed together. The inner layer of the sheath 2 is preferably made of polyvinyl chloride or polyurethane fabric.
[0029] Working principle:
[0030] In use, first wear the sheath 2 on the lower limb of the patient, then insert the connector 12 at the end of the second air pipe 11 into the position of the inflation interface 3 and the signal control line interface 6, through the connector 12, the gas can be connected from the electromagnetic valve to the sheath 2 synchronously. Then start the air pump 5, through the air pump 5, the sheath 2 is sequentially and rhythmically inflated and deflated, intermittent pneumatic pressure is used, repeated and dynamic pressure is applied, and in this embodiment, the pressure sensor can be used for real-time monitoring and keeping the pressure unchanged, forming a circulating pressure on the limb tissue from the distal end to the proximal end of the limb, and after repeatedly pressurizing and depressurizing the limb, the venous blood and lymph return, the pressure in the limb end tissue is reduced, the blood flow rate is increased, the blood stasis state is reduced, and the formation of deep vein thrombosis is prevented. In addition, the heating layer in the middle layer of the sheath 2 is used as a heating component, and the heating method of the film layer can have a larger heating area, more uniform heating, and faster heating rate, so that the temperature of the sheath 2 can be increased, the temperature of the lower limbs of the patient can be increased, and the blood flow rate of the lower limbs of the patient can be increased. The effect is better for surgical patients, bedridden patients, and patients with low body temperature, high heat dissipation, and easy thrombosis of the lower limbs.
[0031] In a further preferred embodiment of the first embodiment, the heating layer in the middle layer of the sheath 2 can be a graphene heating layer or an electric heating wire heating layer. The graphene heating layer is preferred, and the heating method of the graphene film layer can have a larger heating area, more uniform heating, and faster heating rate.
[0032] In addition, the electric heating wire heating layer can also be provided, so that the electric heating wire heating layer can quickly heat the gas in the sheath 2, thereby further ensuring the temperature of the sheath 2. Further, a temperature sensor can be provided in the sheath 2, and the signal output end of the temperature sensor is connected to the controller 18 through the signal control line interface 6. Thus, the temperature sensor can be used to monitor the temperature of the gas in the large calf air bag 21 or the single calf air bag 22 at close range, and when the temperature of the gas in the large calf air bag 21 or the single calf air bag 22 is lower than the set threshold value, the temperature sensor transmits a signal to the controller 18, and the controller controls the electric heating wire heating layer in the sheath 2 to heat, so that the temperature of the gas in the large calf air bag 21 or the single calf air bag 22 can be maintained at a set temperature value during use.
[0033] In a further preferred embodiment of the first embodiment, the electromagnetic valve 9 is a three-way electromagnetic valve, the gas inlet of the three-way electromagnetic valve is connected to the first air pipe 8, the first gas outlet of the three-way electromagnetic valve is connected to the second air pipe 11, and the second gas outlet of the three-way electromagnetic valve is connected to the outside. When the coil of the electromagnetic valve 9 is energized, the gas inlet and the first gas outlet are connected, and when the coil of the electromagnetic valve 9 is de-energized, the first gas outlet and the second gas outlet are connected.
[0034] When intermittently inflating the airbag 2, the coil of the solenoid valve 9 is first energized, so that the gas output from the air pump 5 can be directly output to the first outlet of the solenoid valve 9 through the first air pipe 8, and then output to the protective sleeve 2 through the inflation port 3, so as to realize the inflation action of the protective sleeve 2; when it is necessary to deflate, the coil of the solenoid valve 9 is de-energized, so that the first outlet of the solenoid valve 9 is connected to the second outlet, and then the gas in the protective sleeve 2 is discharged through the second outlet of the solenoid valve 9, so as to achieve the intermittent inflation effect.
[0035] In Example 4, as a further preferred embodiment of Example 1, a pressure relief valve is installed on the connecting pipe between the solenoid valve 9 and the inflation port 3. In this embodiment, the control terminal of the solenoid valve 9 is connected to the first relay, and the control terminal of the pressure relief valve is connected to the second relay. When inflating the sheath 2, the pressure relief valve is closed and the solenoid valve 9 is opened, allowing the sheath 2 to be directly inflated by the air pump 5. When deflation occurs, the second relay controls the pressure relief valve to open, and the first relay controls the solenoid valve 9 to close, allowing the gas in the sheath 2 to be discharged from the pressure relief valve.
[0036] In Example 5, as a further preferred embodiment of Example 1, an air valve 19 is installed on the first air pipe 8, and the control handle of the air valve 19 is located on the outside of the machine body 1. The air valve 19 allows for manual control of the gas inside the sheath 2 in the event of a malfunction of the solenoid valve.
[0037] In Example 6, as a further preferred embodiment of Example 1, the inner side of the sheath 2 is provided with hook and loop fasteners at both ends, and the outer side of the sheath 2 is provided with hook and loop fasteners 13 at one end, the hook and loop fasteners 13 engaging with the hook and loop fasteners. Therefore, when the sheath 2 is worn on the patient's lower limb, it can be directly wrapped around the patient's lower limb, and the sheath 2 is secured by the engagement of the hook and loop fasteners 13 with the hook and loop fasteners.
[0038] Example 7, as Figures 4-5 As shown, in a further preferred embodiment of the first example, the pressurized airbag 2 includes a thigh and calf airbag 21 and a single calf airbag 22. Both the thigh and calf airbags 21 and the single calf airbag 22 are dual-chambered, and each chamber has an air inlet 10 installed on its outer surface. By dividing the pressurized airbag 2 into thigh and calf airbags 21 and a single calf airbag 22, the air pressure of each airbag can be set separately, thereby effectively avoiding the problem of excessive pressure on the sheath 2 increasing the burden on blood reflux.
[0039] In the eighth embodiment, as a further preferred solution of the fifth embodiment, the outer surface of the body 1 is provided with a control touch screen 15, the body 1 is provided with a power switch 16 and an emergency stop switch 17, and the inner cavity of the body 1 is provided with a controller 18. The output port of the control touch screen 15 is connected to the input port of the controller 18. The controller 18 is connected to the power supply through the power switch 16. The output port of the controller 18 is connected to the electromagnetic valve 9, the air pump 5 and the heating component through the emergency stop switch 17. The operation control of the air pump 5 and the heating component can be realized through the control touch screen 15.
[0040] In the ninth embodiment, as a further preferred solution of the ninth embodiment, the air inlet nozzle 10 is provided with a pressure sensor. The sensing end of the pressure sensor is located inside the thigh air bag 21 and the single calf air bag 22. The signal output end of the pressure sensor is connected to the controller 18 through the signal control line interface 6. The air pressure inside the thigh air bag 21 and the single calf air bag 22 can be sensed in real time through the pressure sensor. When the air pressure in the thigh air bag 21 or the single calf air bag 22 is lower than the set threshold value, the pressure sensor will transmit a signal to the controller 18. The controller controls the electromagnetic valve 9 to be energized and the air pump 5 to operate, so that the thigh air bag 21 or the single calf air bag 22 can be inflated through the air pump 5. When the pressure sensor senses that the air pressure in the thigh air bag 21 or the single calf air bag 22 reaches the set threshold value, the pressure sensor will transmit a judgment signal to the controller 18 again. The controller controls the air pump 5 to stop operating, thereby ensuring that the air pressure in the thigh air bag 21 or the single calf air bag 22 can always be maintained at the set air pressure value during use.
[0041] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part of the technical features. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A lower extremity venous intermittent warming and compression anti-embolic device, characterized by: The utility model provides a kind of inflatable leg-wrapping device, including body (1) and sheath (2), the outside of the body (1) is equipped with inflation interface (3), signal control line interface (6) and power socket (4), the inside of the body (1) is equipped with air pump (5) and power supply, the output end of the air pump (5) is connected with the one end of first air pipe (8), the other end of the first air pipe (8) is connected with the one end of electromagnetic valve (9), the other end of the electromagnetic valve (9) is connected with inflation interface (3);The surface of the sheath (2) is equipped with air inlet (10), the one end of the second air pipe (11) is connected with the air inlet (10), the other end of the second air pipe (11) is equipped with plug-in part (12), the air path connector in the plug-in part (12) is matched with inflation interface (3), the circuit connector in the plug-in part (12) is matched with signal control line interface (6); The inner layer of the sheath (2) is a high polymer material layer, the middle layer is a heating layer, and the outer layer is a waterproof textile fabric.
2. The lower extremity venous intermittent warming and pressurizing anti-embolic device according to claim 1, characterized in that: The heating layer is a graphene heating layer or an electric heating wire heating layer.
3. The lower extremity venous intermittent warming and compression anti-embolic device according to claim 1, characterized in that: The electromagnetic valve (9) is a three-way electromagnetic valve, the air inlet of the three-way electromagnetic valve is connected with the first air pipe (8), the first air outlet of the three-way electromagnetic valve is connected with the inflation interface (3), and the second air outlet of the three-way electromagnetic valve is connected with the outside.
4. The lower extremity venous intermittent warming and compression anti-embolic device according to claim 3, characterized in that: A pressure relief valve is installed on the connecting pipeline between the electromagnetic valve (9) and the inflation interface (3).
5. The lower extremity venous intermittent warming and compression anti-embolic device according to claim 1, characterized in that: An air valve (19) is installed on the first air pipe (8), and a control handle of the air valve (19) is located on the outside of the body (1).
6. The lower extremity venous intermittent warming and compression anti-embolic device according to claim 1, characterized in that: Magic tape hair surfaces are arranged at both ends of the inner side of the sheath (2), and a magic tape thorn surface (13) is arranged at one end of the outer side of the sheath (2).
7. The lower extremity venous intermittent warming and compression anti-embolic device according to claim 1, characterized in that: The sheath (2) includes a thigh air bag (21) and a single calf air bag (22), and the thigh air bag (21) and the single calf air bag (22) are both double air chambers, and an air inlet (10) is installed on the outer surface of each air chamber.
8. The lower extremity venous intermittent warming and compression anti-embolic device according to claim 2, characterized in that: A control touch screen (15) is arranged on the outer surface of the body (1), a power switch (16) and an emergency stop switch (17) are arranged on the body (1), a controller (18) is arranged in the inner cavity of the body (1), the controller (18) is connected with the power supply through the power switch (16), an output port of the control touch screen (15) is connected with an input port of the controller (18), and an output port of the controller (18) is connected with the electromagnetic valve (9) and the air pump (5) through the emergency stop switch (17).
9. The lower extremity venous intermittent warming and compression anti-embolic device according to claim 8, characterized in that: A pressure sensor is installed on the air inlet (10), a sensing end of the pressure sensor is located on the inner side of the air inlet (10), and a signal output end of the pressure sensor is connected with the controller (18) through the signal control line interface (6).
10. The lower extremity venous intermittent warming and compression anti-embolic device according to claim 8, characterized in that: The sheath (2) is provided with a temperature sensor, and a signal output end of the temperature sensor is connected with a controller (18) through a signal control line interface (6).