Positive pressure oxygen therapy instrument for wounds of lower limbs

Abstract

The utility model relates to a lower limb wound positive pressure oxygen therapy instrument which comprises a control module, the control module comprises a host provided with a display screen, a controller is installed in the host, and an oxygen source input port used for being connected with an oxygen source is installed on the host; the oxygen therapy cabin comprises a cabin body and an oversleeve formed at the inlet end of the cabin body, a therapy space is formed in the cabin body, and the oversleeve is made of a flexible plastic film material; the inflation gas circuit is connected with the oxygen source input port and the oxygen therapy cabin and comprises an oversleeve inflation gas circuit and a treatment gas circuit connected into the treatment space, the oversleeve inflation gas circuit is communicated with a pressure relief gas circuit, a second pressure sensor connected with the oversleeve inflation gas circuit is installed in the main machine, a second switch valve is installed on the oversleeve inflation gas circuit, and a second pressure sensor connected with the pressure relief gas circuit is installed on the second switch valve. A proportional valve is installed on the treatment gas circuit, and a third switch valve is installed on the pressure relief gas circuit. The oxygen therapy cabin has the advantages that the inflatable oversleeve serves as a sealing structure of the oxygen therapy cabin, the pressure is moderate, and a patient can adjust the pressure of the oversleeve according to the actual situation of the patient.

Description

Technical Field

[0001] The present application relates to the field of oxygen therapy apparatus, and in particular to a positive pressure oxygen therapy apparatus for lower limb wounds. Background Art

[0002] With the increasing incidence of geriatric diseases such as diabetes, venous stasis, and peripheral arterial occlusion, chronic wound disease has become an increasingly serious problem in an aging society. In addition, skin ulcers caused by postoperative infection and gangrene, as well as local pressure sores caused by long-term bed rest, are also increasingly serious health problems.

[0003] Oxygen therapy device is a device that promotes wound healing by providing more oxygen to chronic wounds. After the patient's lower limbs are placed in the oxygen therapy chamber, the patient's lower limbs need to be sealed with the oxygen therapy chamber. The sealing method of the existing technology uses elastic materials to wrap the lower limbs and apply high pressure to the lower limbs to seal. This will compress the patient's blood vessels and affect the blood circulation in the lower limbs. It will not have a therapeutic effect, but will aggravate the condition of the wound. Utility Model Content

[0004] In order to improve the sealing effect between the patient's lower limbs and the oxygen therapy chamber while ensuring normal blood circulation in the patient's lower limbs, the present application provides a lower limb wound positive pressure oxygen therapy device.

[0005] The present application provides a positive pressure oxygen therapy device for lower limb wounds, which adopts the following technical solutions:

[0006] A positive pressure oxygen therapy device for lower limb wounds, comprising:

[0007] A control module, comprising a host equipped with a display screen and a controller, wherein the host is provided with an oxygen source input port for connecting to an oxygen source;

[0008] The oxygen therapy cabin comprises a cabin body and a sleeve formed at the entrance end of the cabin body, wherein a treatment space for placing the patient's lower limbs is formed inside the cabin body, and the sleeve is made of a flexible plastic film;

[0009] an inflation air circuit, connecting the oxygen source input port and the oxygen therapy cabin, including a cuff inflation air circuit connected to the cuff and a treatment air circuit connected to the treatment space, the cuff inflation air circuit is connected to a pressure relief air circuit, a second pressure sensor connected to the cuff inflation air circuit is installed in the main unit, a second switch valve is installed on the cuff inflation air circuit, a proportional valve is installed on the treatment air circuit, and a third switch valve is installed on the pressure relief air circuit.

[0010] By adopting the above technical solution, during treatment, the patient's lower limbs are first extended from the opening of the cuff into the treatment space inside the cabin, and then the medical staff operates the display screen of the host to control the second switch valve to open to pass gas into the cuff. Since the cuff is made of flexible plastic film material, the cuff is inflated after the gas is passed to seal the cuff and the patient's lower limbs. By setting a second pressure sensor for detecting the pressure inside the cuff in the host and connecting the inflation gas path to the cuff inflation gas path, the patient can adjust the inflation pressure by adjusting the corresponding button on the display screen according to the actual use situation. When the patient feels that the pressure is too high, the third switch valve is opened by adjusting the button on the display screen, and part of the gas in the cuff is leaked, reducing the pressure of the cuff on the patient's lower limbs. The cuff is made of flexible film plastic material and is disposable, which prevents patients from using oxygen therapy cabins that are not fully disinfected and sterilized, causing cross infection.

[0011] Preferably, it also includes a nebulizer connected to the treatment space inside the cabin and used for providing humidified gas to the treatment space, and the nebulizer is connected to the main unit through an nebulization gas path.

[0012] By adopting the above technical solution, during oxygen therapy, the nebulizer will be started at the same time to provide humidified gas. By using the atomization principle to humidify the therapeutic gas in the oxygen therapy cabin, the maximum humidification effect can reach 98% humidity.

[0013] Preferably, the atomizer includes a water tank and an atomization module, and a humidity sensor is provided in the atomizer, and the atomization module is used to atomize the water in the water tank.

[0014] By adopting the above technical solution, a humidity sensor is set to facilitate real-time monitoring of the humidity in the cabin. When the humidity reaches a preset value, the host controls the atomizer to stop running, otherwise the atomizer starts or continues to run.

[0015] Preferably, the cabin body includes an internal flexible frame and a plurality of inflatable side ribs wrapped around the outside of the flexible frame, the inflatable side ribs are also made of flexible plastic film, the inflation air circuit also includes a side rib inflation air circuit connected to the inflatable side ribs, and a first switch valve is installed on the side rib inflation air circuit.

[0016] By adopting the above technical solution, when in use, the control display screen opens the first switch valve, and the gas flows along the side rib inflation path to the inside of the inflatable side ribs, so that the inflatable side ribs expand and the flexible frame stretches out, so that a treatment space is formed inside the cabin, thereby realizing a method of using flexible film plastic as a rigid oxygen therapy cabin, which is easy to operate and saves more space and usage costs.

[0017] Preferably, a third pressure sensor connected to the side rib inflation air path is installed on the main engine.

[0018] By adopting the above technical solution, the pressure in the inflatable side ribs is monitored by the third pressure sensor, and the maximum pressure threshold in the inflatable side ribs is preset in the main unit. When the third pressure sensor detects that the pressure in the inflatable side ribs reaches the maximum pressure threshold, the first switch valve is automatically closed.

[0019] Preferably, a first pressure sensor connected to the treatment air circuit is installed on the main unit, and an exhaust pipe connecting the treatment space with the external atmospheric pressure is installed on the inflatable side ribs. The controller is used to automatically control the flow rate of the proportional valve according to the pressure value detected by the first pressure sensor and the demand for air pressure rise and fall.

[0020] By adopting the above technical solution, click on the display screen of the oxygen therapy device to start treatment. The proportional valve starts to inflate, and at the same time, the exhaust pipe of the oxygen therapy cabin is exhausted (the exhaust pipe is always in an open state). During the pressure increase process, the input flow of the proportional valve is always greater than the exhaust flow of the exhaust pipe of the oxygen therapy cabin. When the first pressure sensor detects that the pressure of the oxygen therapy cabin cavity reaches a preset value, the flow of the proportional valve is automatically adjusted to be equal to the output flow of the exhaust pipe of the oxygen therapy cabin. When the pressure needs to be reduced, the input flow of the proportional valve is less than the exhaust flow of the exhaust pipe of the oxygen therapy cabin. When the first pressure sensor detects that the pressure of the oxygen therapy cabin cavity reaches a preset value, the flow of the proportional valve is automatically adjusted to be equal to the output flow of the exhaust pipe of the oxygen therapy cabin. When the pressure needs to be increased, the pressure increase step is repeated to achieve cyclic oxygen pressure therapy. The switching of high and low pressures is automatic, and the switching frequency of high and low pressures can be adjusted on the display screen of the host.

[0021] Preferably, the sleeve is cylindrical.

[0022] By adopting the above technical solution, it is easier to fit the lower limbs of the patient and ensure the sealing between the cuff and the lower limbs of the patient.

[0023] Preferably, the oxygen therapy chamber includes a first chamber connected to the sleeve and a second chamber formed at one end of the first chamber away from the sleeve, the first chamber is cylindrical and coaxially arranged with the sleeve, the second chamber is an arched body, the height of the second chamber is higher than the first chamber, and the exhaust pipe is arranged at the upper part of the second chamber.

[0024] By adopting the above technical solution, the second cabin is set as an arched body to increase the volume of the treatment space, increase the oxygen storage capacity in the treatment space, and thus improve the treatment effect on the affected area. The exhaust pipe is set in the upper part of the second cabin to facilitate circulating oxygen pressure therapy when the oxygen storage capacity in the treatment space reaches a certain demand.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The present application provides a ventilated and inflatable cuff at the entrance of the cabin body as a sealing structure for sealing the oxygen therapy cabin and the patient's affected part, and provides a second pressure sensor. When the pressure value in the cuff is detected to reach a preset pressure value, the second switch valve on the cuff inflation air path is automatically closed. The cuff inflation air path is connected with a pressure relief air path and a third switch valve, so that the patient can adjust the pressure of the cuff according to his or her actual situation, reducing the probability of blood circulation in the affected part due to excessive pressure between the cuff and the affected part. The cuff is made of disposable flexible plastic film material, which reduces the probability of cross infection between different patients.

[0027] 2. By using a nebulizer to humidify and atomize the oxygen in the oxygen therapy cabin, the humidification effect is greatly improved;

[0028] 3. By setting an exhaust pipe on the oxygen therapy cabin and setting a first pressure sensor for detecting the pressure in the cabin, the flow of the proportional valve can be automatically controlled according to the pressure value detected by the first pressure sensor and the demand for air pressure rise and fall, that is, the difference between the oxygen input and the oxygen discharged in the oxygen therapy cabin is controlled. The pressure in the oxygen therapy cabin is a linear adjustment process to achieve cyclic oxygen pressure therapy. Due to the monitoring and control function of the first pressure sensor, this switching process is carried out automatically. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a positive pressure oxygen therapy device for lower limb wounds in the present application.

[0030] Figure 2 This is a partial exploded view made to show the internal structure of the host.

[0031] Figure 3 This is a circuit diagram of a positive pressure oxygen therapy device for lower limb wounds in the present application.

[0032] Explanation of the accompanying drawings: 1. control module; 11. host; 12. display screen; 13. controller; 14. oxygen source input port; 2. oxygen therapy cabin; 21. cabin body; 211. first cabin; 212. second cabin; 22. inflatable side ribs; 23. sleeves; 24. treatment space; 3. inflation air circuit; 31. sleeve inflation air circuit; 32. side rib inflation air circuit; 33. treatment air circuit; 34. pressure relief air circuit; 41. first switch valve; 42. second switch valve; 43. proportional valve; 44. third switch valve; 45. safety valve; 51. second pressure sensor; 52. third pressure sensor; 53. first pressure sensor; 6. exhaust pipe; 7. nebulizer; 8. nebulization air circuit. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-3 This application is described in further detail.

[0034] The present application discloses a positive pressure oxygen therapy device for lower limb wounds. It is mainly used in clinical treatment departments such as endocrinology, orthopedics, burn plastic surgery, and rehabilitation, and is also suitable for home environments. It can promote the growth of granulation tissue on the wound surface of the patient's lower limbs and shorten the healing time of the wound surface. Figure 1 , Figure 2 and Figure 3 The positive pressure oxygen therapy device for lower limb wounds includes a control module 1, an oxygen therapy cabin 2, and an inflation gas circuit 3 connected to the oxygen therapy cabin 2.

[0035] The control module 1 includes a host 11 equipped with a display screen 12 and a controller 13. An oxygen source input port 14 for connecting to an oxygen source is installed on the host 11. The oxygen source input port 14 can be connected to a central gas supply interface of a medical institution or a high-pressure oxygen cylinder in other environments.

[0036] The oxygen therapy cabin 2 includes a cabin body 21 and a sleeve 23 formed at the inlet end of the cabin body 21. The cabin body 21 includes an internal flexible frame and an inflatable side rib 22 wrapped around the outside of the flexible frame. The sleeve 23 and the inflatable side rib 22 are both shells with hollow spaces inside, and the sleeve 23 and the inflatable side rib 22 are made of flexible plastic film. The inflatable gas circuit 3 is installed between the host 11 and the oxygen therapy cabin 2 to input oxygen into the hollow space inside the sleeve 23 and the inflatable side rib 22 itself and the treatment space 24 enclosed by the oxygen therapy cabin 2.

[0037] Specifically, the inflation circuit 3 includes a sleeve inflation circuit 31 connected to the sleeve 23, a side rib inflation circuit 32 connected to the inflatable side rib 22, and a treatment circuit 33 connected to the treatment space 24. A second switch valve 42 is installed on the sleeve inflation circuit 31, and a first switch valve 41 is installed on the side rib inflation circuit 32. A second pressure sensor 51 connected to the sleeve inflation circuit 31 and a third pressure sensor 52 connected to the side rib inflation circuit 32 are installed in the host 11. A proportional valve 43 is installed on the treatment circuit 33.

[0038] Before the formal treatment, the operator first clicks on the display screen 12 of the oxygen therapy device host 11 to open the first switch valve 41 and start to inflate the inflatable side ribs 22. At the same time, the third pressure sensor 52 will monitor the pressure of the hollow space inside the inflatable side ribs 22 in real time. When the pressure reaches the preset value, the second switch valve 42 is closed to complete the inflation of the inflatable side ribs 22. After that, the patient extends the lower limbs from the cuff 23 of the oxygen therapy cabin 2 into the interior of the oxygen therapy cabin 2. After the extension, click on the display screen 12 of the oxygen therapy device host 11 to start inflating the cuff 23. The first switch valve 41 opens, the cuff 23 starts to inflate, and the cuff 23 gradually expands and gradually forms a seal with the patient's lower limbs. At the same time, the second pressure sensor 51 will monitor the pressure inside the cuff 23 in real time. When the pressure reaches the preset value, the first switch valve 41 is closed.

[0039] Since the sleeve 23 and the inflatable side ribs 22 are made of flexible film plastic material, they are disposable medical supplies during treatment, which can prevent patients from using the oxygen therapy cabin 2 that is not fully disinfected and sterilized, causing cross infection.

[0040] The cuff inflation air circuit 31 is connected to a pressure relief air circuit 34, and a third switch valve 44 is installed on the pressure relief air circuit 34. When the patient feels that the sealing pressure of the cuff 23 is too high and compresses the blood vessels of the lower limbs, the patient can click the cuff 23 on the display of the oxygen therapy device host 11 to adjust the pressure, and then the third switch valve 44 opens and starts to exhaust. Each click reduces the pressure by 0.1 kPa until it reaches a comfortable pressure for the patient.

[0041] The host 11 is equipped with a first pressure sensor 53 connected to the treatment gas circuit 33, and the inflatable side rib 22 is equipped with an exhaust pipe 6 that connects the treatment space 24 to the outside atmospheric pressure. The controller 13 is used to automatically control the flow of the proportional valve 43 according to the pressure value detected by the first pressure sensor 53 and the pressure rise and fall requirements. During treatment, click on the display screen 12 of the oxygen therapy device host 11 to start treatment. The proportional valve 43 starts to inflate, and at the same time, the exhaust pipe 6 of the oxygen therapy cabin 2 is exhausted (the exhaust pipe 6 is always in an open state). During the pressure increase process, the input flow of the proportional valve 43 is always greater than the exhaust flow of the exhaust pipe 6 of the oxygen therapy cabin 2. When the first pressure sensor 53 detects that the pressure of the cavity of the oxygen therapy cabin 2 reaches a preset value, the flow of the proportional valve 43 is automatically adjusted to be equal to the output flow of the exhaust pipe 6 of the oxygen therapy cabin 2. When pressure reduction is required, the input flow of the proportional valve 43 is less than the exhaust flow of the exhaust pipe 6 of the oxygen therapy cabin 2. When the first pressure sensor 53 detects that the pressure of the cavity of the oxygen therapy cabin 2 reaches a preset value, the flow of the proportional valve 43 is automatically adjusted to be equal to the output flow of the exhaust pipe 6 of the oxygen therapy cabin 2. When pressure increase is required, the pressure increase step is repeated to achieve cyclic oxygen pressure therapy. The switching of high and low pressure is automatic, and the switching frequency of high and low pressure can be adjusted on the display screen 12 of the host 11.

[0042] In order to ensure the safe operation of the inflation gas circuit 3 , a safety valve 45 is installed on the treatment gas circuit 33 .

[0043] In order to better fit the patient's lower limbs and improve the sealing effect of the cuff 23, the cuff 23 is designed to be cylindrical. The oxygen therapy cabin 2 includes a first cabin 211 connected to the cuff 23 and a second cabin 212 formed at one end of the first cabin 211 away from the cuff 23. The first cabin 211 is cylindrical and coaxially arranged with the cuff 23, and the second cabin 212 is an arched body, and the height of the second cabin 212 is higher than the first cabin 211, which is convenient for increasing the volume in the treatment space 24 and increasing the oxygen storage capacity in the treatment space 24, thereby improving the treatment effect on the affected part. The exhaust pipe 6 is arranged at the upper part of the second cabin 212.

[0044] Scientific research shows that a humid oxygen environment is more conducive to maintaining the vitality of tissue cells and the migration of epithelial cells on smooth surfaces, promoting faster, more effective and lasting healing of healthy granulation tissue. Therefore, the positive pressure oxygen therapy device for lower limb wounds of the present application also includes a device for humidifying the oxygen introduced into the oxygen therapy cabin 2. The nebulizer 7 includes an atomization module, a water tank, and a humidity sensor. The nebulizer 7 is powered and communicates with the host 11 through an atomization circuit. The nebulizer 7 is mounted on the cabin 21 and has a through interface with the cabin 21. The water tank can store water for atomization. The atomization module can atomize the water in the water tank and transport the atomized water vapor to the inside of the oxygen therapy cabin 2. The humidity sensor can monitor the gas humidity inside the oxygen therapy cabin 2. When the humidity is greater than the preset value, the atomization module stops working, otherwise, the atomization module starts working.

[0045] The present invention adopts the atomization principle, and compared with the traditional technology of increasing the humidity of therapeutic oxygen through airflow and natural evaporation of water, the humidification effect is better, and the maximum humidification effect can reach 98%.

[0046] The implementation principle of a positive pressure oxygen therapy device for lower limb wounds in the embodiment of the present application is as follows: before formal treatment, the operator first clicks on the display screen 12 of the oxygen therapy device host 11 to open the first switch valve 41 and start to inflate the inflatable side ribs 22. After that, the patient extends the lower limb from the cuff 23 of the oxygen therapy cabin 2 into the interior of the oxygen therapy cabin 2. After the extension, the cuff 23 is inflated by clicking on the display screen 12 of the oxygen therapy device host 11. The first switch valve 41 is opened, and the cuff 23 starts to inflate. The cuff 23 gradually expands and gradually forms a seal with the patient's lower limb. The patient can operate the display screen 12 according to his actual situation to open the third switch valve 44 and adjust the pressure of the cuff 23. During treatment, click on the display screen 12 of the oxygen therapy device host 11 to start treatment. The proportional valve 43 is opened to introduce oxygen into the treatment space 24 of the oxygen therapy cabin 2, and the nebulizer 7 is also opened to atomize the oxygen in the cabin 21 to promote faster, more effective and lasting healing of healthy granulation tissue. By adjusting the flow of the proportional valve 43 and cooperating with the first pressure sensor 53 to monitor and feedback the pressure value in the treatment space 24, circulating oxygen pressure therapy is achieved in the cabin 21.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A positive pressure oxygen therapy device for lower limb wounds, characterized in that: include: The control module (1) comprises a host (11) equipped with a display screen (12), a controller (13) is arranged in the host (11), and an oxygen source input port (14) for connecting to an oxygen source is installed on the host (11); An oxygen therapy cabin (2) comprises a cabin body (21) and a sleeve (23) formed at the entrance end of the cabin body (21), wherein a treatment space (24) is formed inside the cabin body (21) for placing the patient's lower limbs, and the sleeve (23) is made of a flexible plastic film; The inflatable gas circuit (3) is connected to the oxygen source input port (14) and the oxygen therapy cabin (2), and comprises a cuff inflatable gas circuit (31) connected to the cuff (23) and a treatment gas circuit (33) connected to the treatment space (24); the cuff inflatable gas circuit (31) is connected to a pressure relief gas circuit (34); a second pressure sensor (51) connected to the cuff inflatable gas circuit (31) is installed in the host (11); a second switch valve (42) is installed on the cuff inflatable gas circuit (31); a proportional valve (43) is installed on the treatment gas circuit (33); and a third switch valve (44) is installed on the pressure relief gas circuit (34).

2. The positive pressure oxygen therapy device for lower limb wounds according to claim 1, characterized in that: It also includes a nebulizer (7) connected to the treatment space (24) inside the cabin (21) and used to provide humidified gas to the treatment space (24), and the nebulizer (7) is connected to the main unit (11) through an nebulization gas path (8).

3. The positive pressure oxygen therapy device for lower limb wounds according to claim 2, characterized in that: The atomizer comprises a water tank and an atomizer module, and a humidity sensor is arranged in the atomizer (7). The atomizer module is used to atomize the water in the water tank.

4. The positive pressure oxygen therapy device for lower limb wounds according to claim 1, characterized in that: The cabin (21) includes an internal flexible frame and a plurality of inflatable side ribs (22) wrapped around the outside of the flexible frame, and the inflatable side ribs (22) are also made of a flexible plastic film. The inflation air path (3) also includes a side rib inflation air path (32) connected to the inflatable side ribs (22), and a first switch valve (41) is installed on the side rib inflation air path (32).

5. The positive pressure oxygen therapy device for lower limb wounds according to claim 4, characterized in that: The main machine (11) is provided with a third pressure sensor (52) which is in communication with the side rib inflation air path (32).

6. The positive pressure oxygen therapy device for lower limb wounds according to claim 4, characterized in that: The host (11) is provided with a first pressure sensor (53) connected to the treatment gas circuit (33); the inflatable side ribs (22) are provided with an exhaust pipe (6) connecting the treatment space (24) with the external atmospheric pressure; the controller (13) is used to automatically control the flow of the proportional valve (43) according to the pressure value detected by the first pressure sensor (53) and the demand for air pressure increase or decrease.

7. The positive pressure oxygen therapy device for lower limb wounds according to claim 1, characterized in that: The sleeve (23) is cylindrical.

8. The positive pressure oxygen therapy device for lower limb wounds according to claim 6, characterized in that: The oxygen therapy cabin (2) comprises a first cabin (211) connected to the sleeve (23) and a second cabin (212) formed at one end of the first cabin (211) away from the sleeve (23), the first cabin (211) is cylindrical and coaxially arranged with the sleeve (23), the second cabin (212) is an arched body, the height of the second cabin (212) is higher than that of the first cabin (211), and the exhaust pipe (6) is arranged at the upper part of the second cabin (212).

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