Portable multifunctional intelligent wound negative pressure therapeutic apparatusTechnical Field
The invention relates to the technical field of medical suction instruments, in particular to a portable multifunctional intelligent wound negative pressure therapeutic apparatus.
Background
The wound can timely discharge the effusion of the wound surface out of the body under the negative pressure state, which is beneficial to the growth of the wound surface, can also enable the wound surface tissue to release various growth factors and promote the healing of the wound. The wound surface negative pressure therapeutic apparatus can seal the wound surface by combining with the semipermeable membrane, and avoid secondary infection.
In the prior art, the invention patent of publication No. CN102274573A discloses a double negative pressure regulating type wound negative pressure therapeutic apparatus based on a microprocessor core; specifically disclosed is: the therapeutic apparatus comprises 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 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 metabolic substances, the negative pressure detection unit detects the pressure at the wound, the flow and flow speed detection unit detects the drainage quantity and the drainage speed at the wound, the detected signals are 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 signals; the alarm unit sends out an alarm signal when the wound is caused to bleed greatly. The invention can use the negative pressure pump or the hospital negative pressure system as a negative pressure source and is flexibly selected in practical application.
The invention patent of publication number CN115486989A discloses a negative pressure wound surface treatment device; specifically disclosed is: the device comprises a negative pressure drug feeder, a plurality of combined film patches, a plurality of negative pressure connecting pipes and a plurality of drug feeding connecting pipes. Through the combination that uses single combination formula membrane subsides or a plurality of combination formula membrane subsides, with isolating between surface of a wound and the external environment, stop invasion surface of a wound department such as external bacterium, reduce the infection rate of surface of a wound department, combination formula membrane subsides is transparent structure, can observe the surface of a wound position through combination formula membrane subsides, medical staff is convenient for carry out the wound and handle, and be connected negative pressure feeder and negative pressure mechanism through the negative pressure connecting pipe, provide negative pressure environment to the surface of a wound, with the unnecessary tissue liquid extraction that separates out the surface of a wound through the negative pressure, when guaranteeing the drying of surface of a wound, promote the surface of a wound to carry out the formation of fresh tissue, accelerate the recovery of surface of a wound.
The utility model of bulletin number CN201643353U discloses a multidirectional negative-pressure wound drainage device; specifically disclosed is: the device is connected with the negative pressure aspirator, characterized by including drainage main pipe and porous dressing through adapter in the one end of drainage main pipe: the other end of the drainage main pipe is communicated with drainage branch pipes which are radially distributed on the same plane, and 2-3 side holes are formed in the surface of each drainage branch pipe; the porous dressing is provided with two layers which are the same up and down, so that the effective drainage area is enlarged, the drainage and bearing pressure of different parts of the wound surface are more uniform, the number of side holes is relatively increased, and the drainage efficiency is improved.
However, the above prior art still has the following problems:
(1) At present, a negative pressure therapeutic apparatus is not designed for a large-area wound, and although a means of treating the large-area wound by combined film pasting exists, a plurality of injured areas with different degrees exist for the large-area wound, so that the treatment is required to be carried out by adopting different negative pressure values;
(2) The negative pressure therapeutic apparatus can not effectively quantify during medicine feeding, and the situation of excessive or insufficient medicine feeding exists;
(3) The negative pressure drainage sponge is connected with the negative pressure of the center of the bedside, the pressure is large, but the patient is limited to move only at the bedside, and the negative pressure value of the bedside is fixed and has no dynamic change.
Disclosure of Invention
In order to achieve the purpose of the invention, the invention is realized by the following technical scheme: the portable multifunctional intelligent wound surface negative pressure therapeutic apparatus comprises a negative pressure device, a negative pressure connecting pipe, a wound surface sealing unit, a medicine feeding 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 external power supply supplies power, and the power plug is pulled off and supplied with power by the mobile power supply.
The wound surface sealing unit at least comprises two independent areas, wherein each independent area 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 medicine feeding device comprises a medicine liquid storage tank, a peristaltic pump and a medicine feeding pipe;
the monitoring device comprises a negative pressure monitoring unit, a temperature detecting unit and an alarm unit.
Further, the negative pressure suction unit is connected with the first connecting pipe, the second connecting pipe is connected with the drainage tube, and the regulating valve is arranged on the second connecting pipe.
Further, the number of the second connecting pipes, the regulating valves and the independent areas are equal, the regulating valves are connected with the main control unit, and negative pressures of different independent areas are controlled through the regulating valves.
Further, the regulating valve is an electric regulating valve and is used for accurately controlling the flow of the second connecting pipe.
Further, the control algorithm of the main control unit is as follows:
P＝F(q,A,s)
wherein P is the negative pressure value of the independent area, q is the flow rate of the regulating valve, A is the area of the independent area, s is the pressure value of the negative pressure suction unit, F (-) is the mapping relation between the negative pressure value of the independent area and the flow rate of the regulating valve, and the negative pressure value is obtained through multiple nonlinear regression fitting.
Further, the negative pressure monitoring unit is composed of an air pressure sensor, and the actually measured air pressure value of the independent area is transmitted back to the main control unit; the monitoring steps of the negative pressure monitoring unit are as follows:
(1) Acquiring 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, the adjacent independent areas are communicated, and alarm information is sent out by an alarm unit;
(3) And for adjacent independent areas with equal negative pressure values, dividing the monitoring time interval into a plurality of time periods, controlling the corresponding regulating valve to finely adjust the flow value when the single time period is finished, and judging whether the adjacent independent areas are communicated or not through the negative pressure values of the monitoring independent areas.
Further, the step of judging whether the adjacent independent areas are communicated by monitoring the negative pressure values of the independent areas is as follows:
(1) Calculating the negative pressure change value of the independent area:
Wherein Δp1 is the negative pressure change value for zone 1, Δp1 is the negative pressure change value for zone 2, and ε is the trim flow value;
(2) Obtaining the actual measurement independent area negative pressure change value, and calculating the communication judgment coefficient:
Wherein Δpc1 is the actual measured negative pressure change value of the area 1, Δpc1 is the actual measured negative pressure change value of the area 2, η is the connection judgment threshold, and the threshold is the difference between the actual measured negative pressure value and the calculated negative pressure value in the normal working state;
(3) If l=1, the negative pressure instrument works normally; if l=0, the adjacent independent areas are in area communication, and the alarm unit sends out alarm information.
Further, the temperature detection unit is composed of a temperature sensor and an analog-to-digital conversion circuit, and is used for detecting the temperature in real time, and if the temperature exceeds a temperature threshold value, the alarm unit sends out alarm information.
Further, the main control unit is composed of a microprocessor embedded system and peripheral circuits thereof, and is used for completing system parameter presetting, parameter setting, information processing and transmission and measurement and control of other units.
Further, the display unit is a touch display screen, so that man-machine interaction operation is realized, and preset parameters, actual measurement parameters, parameter adjustment and alarm information of the system can be displayed.
The beneficial effects of the invention are as follows:
1. Through setting up a plurality of independent areas, can treat great area wound, set up second connecting pipe and governing valve corresponding with independent area, can control the negative pressure value in independent area respectively, realize that different areas use different negative pressures to treat, reach more accurate treatment.
2. The peristaltic pump is arranged on the medicine feeding device, so that the medicine feeding amount can be accurately controlled.
3. Through the negative pressure value monitoring to adjacent region, can effectively monitor whether appear leaking gas, regional condition of intercommunication, in time send alarm information, adjust the surface of a wound closed unit, guaranteed the treatment.
4. Through the arrangement of the mobile power supply, the negative pressure instrument can be moved in a portable manner, so that the application scene of the negative pressure instrument is enlarged, and the treatment experience of a patient is improved; by improving the negative pressure connecting pipe, different negative pressure values are generated by a single negative pressure suction unit, and the portability of the negative pressure instrument is improved.
Drawings
FIG. 1 is a schematic diagram of a negative pressure instrument according to the method of the present invention;
Detailed Description
The present invention will be further described in detail with reference to the following examples, which are only for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
Example 1
According to the embodiment shown in fig. 1, a portable multifunctional intelligent wound negative pressure therapeutic apparatus is provided, wherein the negative pressure therapeutic apparatus comprises a negative pressure device, a negative pressure connecting pipe, a wound sealing unit, a medicine feeding 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 external power supply supplies power, and the power plug is pulled off and supplied with power by the mobile power supply.
The wound surface sealing unit at least comprises two independent areas, wherein each independent area 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 medicine feeding device comprises a medicine liquid storage tank, a peristaltic pump and a medicine feeding pipe;
the monitoring device comprises a negative pressure monitoring unit, a temperature detecting unit and an alarm unit.
More specifically, the negative pressure suction unit is connected with a first connecting pipe, a second connecting pipe is connected with a drainage pipe, and a regulating valve is arranged on the second connecting pipe.
More specifically, the number of the second connecting pipes, the regulating valves and the independent areas are equal, the regulating valves are connected with the main control unit, and negative pressures of different independent areas are controlled through the regulating valves.
More specifically, the regulating valve is an electric regulating valve and is used for accurately controlling the flow of the second connecting pipe.
More specifically, the control algorithm of the main control unit is as follows:
P＝F(q,A,s)
wherein P is the negative pressure value of the independent area, q is the flow rate of the regulating valve, A is the area of the independent area, s is the pressure value of the negative pressure suction unit, F (-) is the mapping relation between the negative pressure value of the independent area and the flow rate of the regulating valve, and the negative pressure value is obtained through multiple nonlinear regression fitting.
More specifically, the negative pressure monitoring unit is composed of an air pressure sensor, and the measured air pressure value of the independent area is transmitted back to the main control unit; the monitoring steps of the negative pressure monitoring unit are as follows:
(1) Acquiring 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, the adjacent independent areas are communicated, and alarm information is sent out by an alarm unit;
(3) And for adjacent independent areas with equal negative pressure values, dividing the monitoring time interval into a plurality of time periods, controlling the corresponding regulating valve to finely adjust the flow value when the single time period is finished, and judging whether the adjacent independent areas are communicated or not through the negative pressure values of the monitoring independent areas.
More specifically, the step of judging whether the adjacent independent areas are communicated by monitoring the negative pressure values of the independent areas is as follows:
(1) Calculating the negative pressure change value of the independent area:
Wherein Δp1 is the negative pressure change value for zone 1, Δp1 is the negative pressure change value for zone 2, and ε is the trim flow value;
(2) Obtaining the actual measurement independent area negative pressure change value, and calculating the communication judgment coefficient:
Wherein Δpc1 is the actual measured negative pressure change value of the area 1, Δpc1 is the actual measured negative pressure change value of the area 2, η is the connection judgment threshold, and the threshold is the difference between the actual measured negative pressure value and the calculated negative pressure value in the normal working state;
(3) If l=1, the negative pressure instrument works normally; if l=0, the adjacent independent areas are in area communication, and the alarm unit sends out alarm information.
More specifically, the temperature detection unit is composed of a temperature sensor and an analog-to-digital conversion circuit, and is used for detecting the temperature in real time, and if the temperature exceeds a temperature threshold value, the alarm unit sends out alarm information.
More specifically, the main control unit is composed of a microprocessor embedded system and peripheral circuits thereof, and is used for completing system parameter presetting, parameter setting, information processing and transmission and measurement and control of other units.
More specifically, the display unit is a touch display screen, so that man-machine interaction operation is realized, and preset parameters, actual measurement parameters, parameter adjustment and alarm information of the system can be displayed.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims.