A portable multifunctional intelligent wound negative pressure therapy device

Abstract

The present invention relates to the technical field of medical suction instruments, and in particular to a portable multifunctional intelligent wound negative pressure therapeutic instrument. It includes a negative pressure device, a negative pressure connecting pipe, a wound sealing unit, a medicine applying device, and a monitoring device; the wound sealing unit includes at least two independent areas, and the independent areas each include a dressing, a drainage tube, and a transparent semipermeable membrane; the negative pressure connecting pipe includes a first connecting pipe, a second connecting pipe, and a regulating valve; the medicine applying device includes a liquid medicine storage tank, a peristaltic pump, and a medicine inlet pipe; the monitoring device includes a negative pressure monitoring unit, a temperature detection unit, and an alarm unit. By setting up multiple independent areas, larger area wounds can be treated, and by setting up a second connecting pipe and a regulating valve corresponding to the independent area, the negative pressure values ​​of the independent areas can be controlled respectively, so that different areas can be treated with different negative pressures, thereby achieving a more precise treatment effect.

Description

Technical Field

[0001] The present invention relates to the technical field of medical suction devices, and in particular to a portable multifunctional intelligent wound surface negative pressure therapeutic device. Background Art

[0002] When the wound is under negative pressure, the accumulated fluid on the wound surface can be discharged from the body in time, which is conducive to the growth of the wound surface. It can also make the wound surface tissue release various growth factors to promote wound healing. The wound surface negative pressure therapy device combined with a semipermeable membrane can seal the wound surface to avoid secondary infection.

[0003] Related technologies are disclosed in the prior art:

[0004] The Chinese patent with publication number CN102274573A discloses a double negative pressure regulating wound negative pressure therapeutic device based on a microprocessor core; specifically discloses: the therapeutic device includes an internal negative pressure source, an internal negative pressure control unit, an external negative pressure interface, a regulating valve, an external negative pressure control unit, a wound drainage device, a negative pressure pressure detection unit, a flow and flow velocity detection unit and an alarm unit; the internal negative pressure control unit and the external negative pressure control unit respectively control the internal negative pressure source and the external negative pressure source to generate negative pressure at the wound, the wound drainage device drains the generated lactic acid metabolites, the negative pressure pressure detection unit detects the pressure at the wound, the flow and flow velocity detection unit detects the drainage volume and drainage velocity at the wound, and the detected signal is fed back to the internal negative pressure control unit or the external negative pressure control unit, and the control unit controls the negative pressure source according to the feedback signal; when the wound causes heavy bleeding, the alarm unit sends an alarm signal. The present invention can use a negative pressure pump or a hospital negative pressure system as a negative pressure source, which can be flexibly selected in practical applications.

[0005] The Chinese patent with publication number CN115486989A discloses a negative pressure wound treatment device; specifically disclosed: the device includes a negative pressure drug delivery device, a plurality of combined membrane patches, a plurality of negative pressure connecting tubes and a plurality of drug delivery connecting tubes. By using a single combined membrane patch or a combination of multiple combined membrane patches, the wound is isolated from the external environment, and external bacteria and the like are prevented from invading the wound, thereby reducing the infection rate of the wound. The combined membrane patch is a transparent structure, and the wound site can be observed through the combined membrane patch, which is convenient for medical personnel to treat the wound. The negative pressure drug delivery device is connected to the negative pressure mechanism through the negative pressure connecting tube to provide a negative pressure environment to the wound, so as to extract the excess tissue fluid precipitated from the wound through negative pressure, ensure the drying of the wound, promote the generation of fresh tissue on the wound, and accelerate the recovery of the wound.

[0006] Chinese patent publication number CN201643353U discloses a multi-directional negative pressure wound drainage device; specifically disclosed: the device includes a drainage main pipe and a porous dressing, one end of the drainage main pipe is connected to a negative pressure aspirator through a conversion joint, and its characteristics are: the other end of the drainage main pipe is connected to a drainage branch pipe radially distributed in the same plane, and 2-3 side holes are provided on the surface of the drainage branch pipe; the porous dressing is provided with two identical layers, therefore, the utility model expands the effective drainage area, makes the drainage and pressure of different parts of the wound more uniform, and the number of side holes is relatively increased, thereby improving the drainage efficiency.

[0007] However, the above prior art still has the following problems:

[0008] (1) Currently, negative pressure therapy devices are not designed for larger-area injuries. Although there are methods of treatment through combined membrane patches, for larger-area injuries, there are multiple injured areas of varying degrees, so different negative pressure values ​​are required for treatment;

[0009] (2) The negative pressure therapy device cannot effectively quantify the amount of medication applied, resulting in over- or under-application of medication;

[0010] (3) The negative pressure drainage sponge is connected to the central negative pressure at the bedside. Although the pressure is high, it restricts the patient to bedside activities, and the negative pressure value at the bedside is fixed and does not change dynamically. Summary of the invention

[0011] To achieve the purpose of the present invention, the present invention is implemented by the following technical solutions: a portable multifunctional intelligent wound surface negative pressure therapeutic device, the negative pressure therapeutic device comprising a negative pressure device, a negative pressure connecting tube, a wound surface sealing unit, a medicine applying device, and a monitoring device;

[0012] The negative pressure device includes a main control unit, a display unit, a power supply unit, and a negative pressure suction unit; the power supply unit includes an external power socket, a mobile power supply, and a selection circuit; when the external power supply is connected, the device is powered by the external power supply, and when the power plug is unplugged, the device is powered by the mobile power supply.

[0013] The wound sealing unit comprises at least two independent areas, each of which comprises a dressing, a drainage tube, and a transparent semipermeable membrane;

[0014] The negative pressure connecting pipe comprises a first connecting pipe, a second connecting pipe and a regulating valve;

[0015] The drug feeding device comprises a drug liquid storage tank, a peristaltic pump, and a drug feeding pipe;

[0016] The monitoring device comprises a negative pressure monitoring unit, a temperature detection unit and an alarm unit.

[0017] Furthermore, the negative pressure suction unit is connected to a first connecting tube, the second connecting tube is connected to a drainage tube, and the regulating valve is arranged on the second connecting tube.

[0018] Furthermore, the number of the second connecting pipes, regulating valves and independent areas is equal, the regulating valves are connected to the main control unit, and the negative pressures of different independent areas are controlled by the regulating valves.

[0019] Furthermore, the regulating valve is an electric regulating valve, which is used to accurately control the flow of the second connecting pipe.

[0020] Furthermore, the control algorithm of the main control unit is as follows:

[0021]

[0022] in, is the negative pressure value of the independent area, To adjust the flow rate through the valve, is the area of ​​the independent region, is the pressure value of the negative pressure suction unit, It is the mapping relationship between the negative pressure value of the independent area and the flow rate through the regulating valve, which is obtained through multivariate nonlinear regression fitting.

[0023] Furthermore, the negative pressure monitoring unit is composed of an air pressure sensor, which transmits the measured air pressure value of the independent area back to the main control unit; the monitoring steps of the negative pressure monitoring unit are as follows:

[0024] (1) obtaining the negative pressure value of the independent area in real time;

[0025] (2) For adjacent independent areas with different negative pressure values, if the negative pressure values ​​are the same during the monitoring time interval, the adjacent independent areas are connected, and the alarm unit issues an alarm message;

[0026] (3) For adjacent independent areas with equal negative pressure values, the monitoring time interval is divided into several time periods. At the end of a single time period, the corresponding regulating valve is controlled to fine-tune the flow value, and whether the adjacent independent areas are connected is determined by monitoring the negative pressure values ​​of the independent areas.

[0027] Furthermore, the step of determining whether adjacent independent areas are connected by monitoring the negative pressure values ​​of the independent areas is as follows:

[0028] (1) Calculate the negative pressure change value of independent areas:

[0029]

[0030] in, is the negative pressure change value of area 1, is the negative pressure change value of area 2, To fine tune the flow value;

[0031] (2) Obtain the measured negative pressure change value of the independent area and calculate the connectivity judgment coefficient:

[0032]

[0033] in, is the measured negative pressure change value of area 1, is the measured negative pressure change value of area 2, The threshold value is the difference between the measured negative pressure value and the calculated negative pressure value under normal working conditions.

[0034] (3) If , the negative pressure instrument works normally; if , then the adjacent independent areas are connected and the alarm unit issues an alarm message.

[0035] Furthermore, the temperature detection unit is composed of a temperature sensor and an analog-to-digital conversion circuit, and performs temperature detection in real time. If the temperature exceeds a threshold value, an alarm unit issues an alarm message.

[0036] Furthermore, the main control unit is composed of a microprocessor embedded system and its peripheral circuits, and completes system parameter preset, parameter setting, information processing and transmission, and measurement and control of other units.

[0037] Furthermore, the display unit is a touch screen that implements human-computer interactive operation and can display system preset parameters, measured parameters, parameter adjustments, and alarm information.

[0038] The beneficial effects of the present invention are:

[0039] 1. By setting up multiple independent areas, larger area injuries can be treated. By setting up second connecting pipes and regulating valves corresponding to the independent areas, the negative pressure values ​​of the independent areas can be controlled respectively, so that different areas can be treated with different negative pressures, achieving a more precise treatment effect.

[0040] 2. By setting a peristaltic pump in the drug application device, precise control of the drug application amount can be achieved.

[0041] 3. By monitoring the negative pressure values ​​in adjacent areas, it is possible to effectively detect air leaks and regional connectivity, issue alarms in a timely manner, and adjust the wound sealing unit to ensure the treatment effect.

[0042] 4. By setting up a mobile power supply, the negative pressure meter can be portable and mobile, which expands the application scenarios of the negative pressure meter and improves the patient's treatment experience; by improving the negative pressure connecting tube, a single negative pressure suction unit can generate different negative pressure values, which improves the portability of the negative pressure meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the structure of the negative pressure instrument of the method of the present invention; DETAILED DESCRIPTION

[0044] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with examples. The examples are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention. Example

[0045] according to Figure 1 As shown, this embodiment provides a portable multifunctional intelligent wound negative pressure therapeutic device, which includes a negative pressure device, a negative pressure connecting tube, a wound sealing unit, a medicine applying device, and a monitoring device;

[0046] The negative pressure device includes a main control unit, a display unit, a power supply unit, and a negative pressure suction unit; the power supply unit includes an external power socket, a mobile power supply, and a selection circuit; when the external power supply is connected, the device is powered by the external power supply, and when the power plug is unplugged, the device is powered by the mobile power supply.

[0047] The wound sealing unit comprises at least two independent areas, each of which comprises a dressing, a drainage tube, and a transparent semipermeable membrane;

[0048] The negative pressure connecting pipe comprises a first connecting pipe, a second connecting pipe and a regulating valve;

[0049] The drug feeding device comprises a drug liquid storage tank, a peristaltic pump, and a drug feeding pipe;

[0050] The monitoring device comprises a negative pressure monitoring unit, a temperature detection unit and an alarm unit.

[0051] More specifically, the negative pressure suction unit is connected to a first connecting tube, the second connecting tube is connected to a drainage tube, and the regulating valve is disposed on the second connecting tube.

[0052] More specifically, the number of the second connecting pipes, regulating valves and independent areas is equal, the regulating valves are connected to the main control unit, and the negative pressures of different independent areas are controlled by the regulating valves.

[0053] More specifically, the regulating valve is an electric regulating valve, which is used to accurately control the flow of the second connecting pipe.

[0054] More specifically, the main control unit control algorithm is as follows:

[0055]

[0056] in, is the negative pressure value of the independent area, To adjust the flow rate through the valve, is the area of ​​the independent region, is the pressure value of the negative pressure suction unit, It is the mapping relationship between the negative pressure value of the independent area and the flow rate through the regulating valve, which is obtained through multivariate nonlinear regression fitting.

[0057] More specifically, the negative pressure monitoring unit is composed of an air pressure sensor, which transmits the measured air pressure value of the independent area back to the main control unit; the monitoring steps of the negative pressure monitoring unit are as follows:

[0058] (1) obtaining the negative pressure value of the independent area in real time;

[0059] (2) For adjacent independent areas with different negative pressure values, if the negative pressure values ​​are the same during the monitoring time interval, the adjacent independent areas are connected, and the alarm unit issues an alarm message;

[0060] (3) For adjacent independent areas with equal negative pressure values, the monitoring time interval is divided into several time periods. At the end of a single time period, the corresponding regulating valve is controlled to fine-tune the flow value, and whether the adjacent independent areas are connected is determined by monitoring the negative pressure values ​​of the independent areas.

[0061] More specifically, the steps of determining whether adjacent independent areas are connected by monitoring the negative pressure values ​​of the independent areas are as follows:

[0062] (1) Calculate the negative pressure change value of independent areas:

[0063]

[0064] in, is the negative pressure change value of area 1, is the negative pressure change value of area 2, To fine tune the flow value;

[0065] (2) Obtain the measured negative pressure change value of the independent area and calculate the connectivity judgment coefficient:

[0066]

[0067] in, is the measured negative pressure change value of area 1, is the measured negative pressure change value of area 2, The threshold value is the difference between the measured negative pressure value and the calculated negative pressure value under normal working conditions.

[0068] (3) If , the negative pressure instrument works normally; if , then the adjacent independent areas are connected and the alarm unit issues an alarm message.

[0069] More specifically, the temperature detection unit is composed of a temperature sensor and an analog-to-digital conversion circuit, and performs temperature detection in real time. If the temperature exceeds a threshold value, an alarm unit issues an alarm message.

[0070] More specifically, the main control unit is composed of a microprocessor embedded system and its peripheral circuits, and completes system parameter preset, parameter setting, information processing and transmission, and measurement and control of other units.

[0071] More specifically, the display unit is a touch screen that implements human-computer interactive operation and can display system preset parameters, measured parameters, parameter adjustments, and alarm information.

[0072] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A portable multifunctional intelligent wound negative pressure therapy device, characterized in that: The negative pressure therapy device comprises a negative pressure device, a negative pressure connecting tube, a wound sealing unit, a medicine applying device, and a monitoring device; The negative pressure device comprises a main control unit, a display unit, a power supply unit, and a negative pressure suction unit; the power supply unit comprises an external power socket, a mobile power supply, and a selection circuit; when the external power supply is connected, the power is supplied by the external power supply, and when the power plug is unplugged, the power is supplied by the mobile power supply; The wound sealing unit comprises at least two independent areas, each of which comprises a dressing, a drainage tube, and a transparent semipermeable membrane; The negative pressure connecting pipe comprises a first connecting pipe, a second connecting pipe and a regulating valve; The drug feeding device comprises a drug liquid storage tank, a peristaltic pump, and a drug feeding pipe; The monitoring device includes a negative pressure monitoring unit, a temperature detection unit and an alarm unit; The control algorithm of the main control unit is as follows: ； in, is the negative pressure value of the independent area, To adjust the flow rate through the valve, is the area of ​​the independent region, is the pressure value of the negative pressure suction unit, It is the mapping relationship between the negative pressure value of the independent area and the flow rate through the regulating valve, which is obtained by multivariate nonlinear regression fitting; The negative pressure monitoring unit is composed of an air pressure sensor, which transmits the measured air pressure value of the independent area back to the main control unit; the monitoring steps of the negative pressure monitoring unit are as follows: (1) obtaining the negative pressure value of the independent area in real time; (2) For adjacent independent areas with different negative pressure values, if the negative pressure values ​​are the same during the monitoring time interval, the adjacent independent areas are connected, and the alarm unit issues an alarm message; (3) For adjacent independent areas with equal negative pressure values, the monitoring time interval is divided into several time periods. At the end of a single time period, the corresponding regulating valve is controlled to fine-tune the flow value, and whether the adjacent independent areas are connected is determined by monitoring the negative pressure values ​​of the independent areas.

2. A portable multifunctional intelligent wound surface negative pressure therapeutic device according to claim 1, characterized in that: The negative pressure suction unit is connected to the first connecting pipe, the second connecting pipe is connected to the drainage pipe, and the regulating valve is arranged on the second connecting pipe.

3. A portable multifunctional intelligent wound surface negative pressure therapeutic device according to claim 2, characterized in that: The number of the second connecting pipes, regulating valves and independent areas is equal, the regulating valves are connected to the main control unit, and the negative pressures of different independent areas are controlled by the regulating valves.

4. The portable multifunctional intelligent wound surface negative pressure therapeutic device according to claim 3, characterized in that: The regulating valve is an electric regulating valve, which is used to accurately control the flow of the second connecting pipe.

5. The portable multifunctional intelligent wound surface negative pressure therapeutic device according to claim 1, characterized in that: The steps of determining whether adjacent independent areas are connected by monitoring the negative pressure values ​​of the independent areas are as follows: (1) Calculate the negative pressure change value of independent areas: ； in, is the negative pressure change value of area 1, is the negative pressure change value of area 2, To fine tune the flow value; (2) Obtain the measured negative pressure change value of the independent area and calculate the connectivity judgment coefficient: ； in, is the measured negative pressure change value of area 1, is the measured negative pressure change value of area 2, The threshold value is the difference between the measured negative pressure value and the calculated negative pressure value under normal working conditions. (3) If , the negative pressure instrument works normally; if , then the adjacent independent areas are connected and the alarm unit issues an alarm message.

6. The portable multifunctional intelligent wound surface negative pressure therapeutic device according to claim 1, characterized in that: The temperature detection unit is composed of a temperature sensor and an analog-to-digital conversion circuit, and performs temperature detection in real time. If the temperature exceeds a threshold value, an alarm message is issued by the alarm unit.

7. The portable multifunctional intelligent wound surface negative pressure therapeutic device according to claim 1, characterized in that: The main control unit is composed of a microprocessor embedded system and its peripheral circuits, and completes system parameter preset, parameter setting, information processing and transmission, and measurement and control of other units.

8. The portable multifunctional intelligent wound surface negative pressure therapeutic device according to claim 1, characterized in that: The display unit is a touch screen that implements human-computer interactive operation and can display system preset parameters, measured parameters, parameter adjustments, and alarm information.

Images