CN102294075B - Negative-pressure wound caring system and feedback control method thereof - Google Patents
Negative-pressure wound caring system and feedback control method thereof Download PDFInfo
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- CN102294075B CN102294075B CN201010218972.XA CN201010218972A CN102294075B CN 102294075 B CN102294075 B CN 102294075B CN 201010218972 A CN201010218972 A CN 201010218972A CN 102294075 B CN102294075 B CN 102294075B
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- liquid
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- wound
- collection bag
- malleation
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Abstract
The invention relates to a negative-pressure wound caring system and a feedback control method thereof. By using the invention, a negative-pressure environment is formed at the opening of a wound dressing device, and a positive-pressure environment is correspondingly formed at the liquid collecting bag; in cooperation with the value obtained by positive/negative-pressure double-line detection, whether the negative-pressure value at the wound is normal can be obtained, and the positive-pressure value in the liquid collecting bag can be maintained on a normal level, so that the system can be maintained to operate under normal positive and negative pressures; and thus, the pump, which is optimally arranged between the liquid collecting bag and the wound, can operate smoothly.
Description
Technical field
The present invention relates to a kind of back-feed control method and this system of negative-pressure wound caring system, it refers to a kind of for forming subnormal ambient with the care system of accelerating wound healing and the back-feed control method of this system in wound.
Background technology
Main sealing patch, soft sucker or the biocompatibility porous materials etc. of utilizing of negative pressure wound therapy (Negative Pressure Wound Therapy) are attached on wound, and link vacuum pump and in wound, form subnormal ambient, to extract wound pus and infected material, and attract health tissues liquid maintain moist treatment environment, and promote arround blood microcirculation and reach effect of accelerating wound healing.
In order to coordinate negative pressure wound therapy, in prior art, develop negative-pressure wound caring device, vacuum pump is connected in liquid collecting housing rear end by system, vacuum pump forms subnormal ambient to extract waste liquid and to be collected in liquid collecting housing in wound and liquid collecting housing, utilize negative pressure value in sensor detecting liquid collecting housing with the whether normal operation of confirmation system, but vacuum pump is located at meaning person's pump and wound distant of liquid collecting housing rear end, pump need expend larger energy can reach the function that forms subnormal ambient and extract waste liquid, therefore, the negative-pressure wound caring device of prior art has been planned vacuum pump has directly been connected with the thing such as patch that is attached at wound, the rear end of vacuum pump is connected that waste liquid is imported wherein and collected again with liquid collecting housing, but, so configuration makes not have and subnormal ambient identical in wound in liquid collecting housing, therefore the detecting negative pressure mode of prior art will not apply use.
Summary of the invention
In view of this, the present invention has designed a kind of back-feed control method of negative-pressure wound caring system, adopts the detecting of positive/negative-pressure two-wire, carrys out control system running.
For reaching above-mentioned goal of the invention, the technology used in the present invention means are the back-feed control method of a kind of negative-pressure wound caring system of design, wherein negative-pressure wound caring system comprises a wound dressing device and a liquid-collection bag being communicated with wound dressing device, wound dressing device, actuator and liquid-collection bag form a fluid flow path and actuator between wound dressing device and liquid-collection bag, and this control method includes an operation mode, under operation mode in the time of micropump start, form a subnormal ambient extracting liquid in the opening part of this wound dressing device, liquid flows in liquid-collection bag by actuator, in this liquid-collection bag, relatively form positive pressure environment, this subnormal ambient is carried out to a negative pressure detection process, and this positive pressure environment is carried out to a malleation detection process, adjust the force value of positive pressure environment and subnormal ambient according to the detecting result feedback of malleation detection process and negative pressure detection process.
And according to aforementioned back-feed control method, the present invention is corresponding has designed a kind of negative-pressure wound caring system, comprising:
One controller;
One sensor, its with controller between form and be electrically connected, sensor has a negative pressure detector and a malleation detector with detecting pressure, and has a relief valve;
One actuator, it has a micropump, between micropump and sensor, forms electrical interconnection;
One liquid collector, it includes a liquid-collection bag;
One wound dressing device, it has an opening;
Wherein sensor and liquid-collection bag form a fluid flow path, sensor and wound dressing device and form another fluid flow path;
Wherein wound dressing device, actuator and liquid-collection bag form a fluid flow path and actuator between wound dressing device and liquid-collection bag, in the time of micropump start, opening part in wound dressing device forms subnormal ambient extracting liquid, liquid flows in liquid-collection bag by actuator, in liquid-collection bag, form positive pressure environment, the subnormal ambient of the opening part of negative pressure detector to wound dressing device carries out negative pressure detecting, and malleation detector carries out malleation detecting to the positive pressure environment in liquid-collection bag.
The invention has the advantages that, carry out feedback control by detecting positive/negative-pressure two-wire, whether the negative pressure value of sustainable detecting wound is normal on the one hand, whether normally also can detect on the one hand malleation value in liquid-collection bag, therefore the system that still can maintain all turns round under normal state at positive/negative-pressure, and then the goodization configuration that pump is located between liquid-collection bag and wound can operate smoothly.
Moreover, negative-pressure wound caring system of the present invention can further design, wherein between sensor and controller, be provided with disassembled electrical interconnection, the micropump of actuator has an entrance and an outlet section, between micropump and sensor, be provided with disassembled electrical interconnection, and between the entrance of micropump and sensor, be provided with disassembled fluid circuit, the liquid-collection bag of liquid collector has an entrance point and a sense terminal, between sense terminal and sensor, be provided with disassembled fluid circuit, and between the outlet section of entrance point and micropump, be provided with disassembled fluid circuit, between wound dressing device and sensor, be provided with disassembled fluid circuit, and between the entrance of wound dressing device and micropump, be provided with disassembled fluid circuit.
Rely on above-mentioned supplementary features, the present invention can further have the following advantages:
1, each inter-module adopts disassembled electrical interconnection and disassembled fluid circuit to be connected, and each assembly can be disassembled maintenance easily;
2, the service life of each assembly is all not identical, for example liquid collector and wound dressing device belong to consumptive material and take normal replacing, controller, actuator and sensor service life longer, therefore disassembled design makes user can disassemble easily and change each assembly;
3, be disassembled setting based on each inter-module, for example, when user is displaced between difference inhabitation institute (hospital and household), can only carry part assembly, and residue part assembly can be prepared multicomponent and not be placed in different places of residence, for example can only carry controller, sensor and actuator, and liquid collector and wound dressing device can be prepared multicomponent and not be placed in hospital and household, or anti-storing also can, the design that utilization can be disassembled easily and can directly pegging graft in the time arriving at different inhabitation institute is used, like this can significantly reduce the user required volume carrying and weight when mobile,
4, in fluid flow path, because actuator is positioned at liquid-collection bag front end, therefore shortened actuator to wound distance, therefore the micropump in actuator can adopt compared with the more low power motor of prior art and can reach the effect that produces negative pressure in wound and extract waste liquid, can effectively dwindle the volume of actuator, and the use that can save electric power.
Accompanying drawing explanation
Fig. 1 is stereo appearance figure of the present invention;
Fig. 2 is system line schematic diagram of the present invention;
Fig. 3 is wound dressing device axonometric chart of the present invention;
Fig. 4 is element exploded view of the present invention;
Fig. 5 is the exploded view of sensor of the present invention and actuator;
Fig. 6 is the internals figure of actuator of the present invention;
Fig. 7 is sense mode flow chart of the present invention;
Fig. 8 is operation mode flow chart of the present invention.
The specific embodiment
With the following drawings and preferred embodiments of the present invention, further set forth the technological means that the present invention takes for reaching predetermined goal of the invention.
Refer to shown in Fig. 1, negative-pressure wound caring system of the present invention includes a controller 10, a sensor 20, an actuator 30, a liquid collector 40 and a wound dressing device 50.
Refer to shown in Fig. 1 and Fig. 2, in aforesaid controller 10, include a microprocessor 11 and a power supply 12, power supply 12 is responsible for the overall electric power of supply, can be set of cells or can directly be connected with external power source, and the outer control panel 13 that is provided with of controller 10 is with domination microprocessor 11 and power supply 12.
In aforesaid sensor 20, include a negative pressure sensor 21 and a malleation sensor 22, a relief valve 23, relief valve 23, in order to regulate the pressure of entire system of the present invention, makes the present invention can have the pattern intermittently starting.
In aforesaid actuator 30, include a micropump 31.
Aforesaid liquid collector 40 includes a liquid-collection bag 41 and and absorbs material 42, absorbs material 42 and is located in liquid-collection bag 41.
Refer to shown in Fig. 3, aforesaid wound dressing device 50 includes a wound sealer 51 and a drainage unit 52, wound sealer 51 is provided with an opening 511, drainage unit 52 is connected in opening 511 and has the banded filtering material 521 of bio-compatible, filtering material 521 enters in fluid circuit in order to materials such as barrier liquid (as wound pus) solid fragments (as fragment of tissue) in addition, drainage unit 52 is fixedly arranged in wound sealer 51, in preferred embodiment, drainage unit 52 is fixedly arranged in wound sealer 51 in ultrasound welding mode.
Refer to shown in Fig. 2 and Fig. 4, the present invention have electrical interconnection with fluid path so that each assembly is connected, wherein fluid path more comprises fluid access path and fluid access path;
Controller 10 forms and is electrically connected with sensor 20, and sensor 20 is electrically connected with actuator 30 formation, aforesaid electrical interconnection can rely on the combination of electric wire 61, plug 62 and socket 63 to form pluggable electrical interconnection, for example be provided with plug 62 by 20 extended electric wires 61 of sensor, electric wire 61 ends, controller 10 is provided with corresponding socket 63, is inserted in socket 63 to form electrical connection by plug 62;
Entrance 311 and the drainage unit 52 of the micropump 31 of actuator 30 form fluid access path, the outlet section 312 of the micropump 31 of actuator 30 forms fluid access path with the entrance point 411 of liquid-collection bag 41 again, and the entrance point 411 of liquid-collection bag 41 is provided with non-return valve to prevent liquid return in liquid-collection bag 41 and contaminated wound, aforesaid fluid access path can rely on conduit 64 and corresponding fluid coupling 65 to form fluid access path, for example micropump 31 and drainage unit 52 extend and are provided with conduit 64 respectively, two conduit 64 ends are provided with relative fluid coupling 65, by forming fluid access path after two fluid coupling 65 docking,
The malleation sensor 22 of sensor 20 forms fluid access path with the sense terminal 412 of liquid-collection bag 41, the negative pressure sensor 21 of sensor 20 and relief valve 23 form fluid access path with drainage unit 52, in preferred embodiment, negative pressure sensor 21 and relief valve 23 form fluid access path by the entrance 311 of micropump 31 with drainage unit 52, aforesaid fluid access path can connect to form fluid by conduit 64 and corresponding fluid coupling 65, for example 22 extensions of malleation sensor are provided with conduit 64, conduit 64 ends are provided with fluid coupling 65, another fluid coupling 65 is located at the sense terminal 412 of liquid-collection bag 41, by forming fluid access path after two fluid coupling 65 docking,
Refer to shown in Fig. 5 and Fig. 6, in preferred embodiment, sensor 20 has a linkage interface 201, linkage interface 201 has an electrical connector 202 and a fluid coupling 203, actuator 30 has a linkage interface 301, linkage interface 301 has an electrical connector 302 and a fluid coupling 303, the electrical connector 302 of actuator 30 forms and is electrically connected with micropump 31, one vent diverter 66 has a first flow 661 and one second runner 662, first flow 661 connects entrance and the drainage unit 52 of micropump 31, the second runner 662 connects the fluid coupling 303 and drainage unit 52 of actuator 30, and the linkage interface 201 of sensor 20 and the linkage interface 301 of actuator 30 can plug to form and dock, wherein the electrical connector 202 of sensor 20 joins with the electrical connector 302 of actuator 30, and the fluid coupling 203 of sensor 20 joins with the fluid coupling 303 of actuator 30.
Furthermore, in the sense terminal 412 of liquid-collection bag 41 and the fluid coupling 303 of actuator 30, be provided with filter element 70, filter element 70 flows in sensor 20 in order to stop infectious substance.
By the setting of aforementioned each group of dismountable electrical interconnection and fluid circuit, the each element of the present invention can independently be disassembled, also can overhaul separately and be changed.
When start of the present invention, utilize the coated wound of wound sealer 51 and with opening 511 corresponding to wound, user starts micropump 31 by the control panel 13 of controller 10, micropump 31 forms subnormal ambient and extracts waste liquid in wound (as pus etc.) simultaneously in wound by fluid circuit, waste liquid is admitted in liquid-collection bag 41 after by micropump 31 and is collected.
Safety while operation in order to make to maintain the present invention, the present invention is designed with corresponding back-feed control method, wherein includes detecting pattern and operation mode;
Refer to shown in Fig. 7, in the time that the present invention starts, first enter detecting pattern, micropump 31 is inflated total system, now whether malleation sensor 22 to detect the malleation of sense terminal 412 of liquid-collection bag 41 normal, extremely representing has part correctly not engage in fluid circuit, now will send abnormal warning and remind user to check; If all fluid circuits correctly engage, malleation sensor 22 will detect malleation value for normal, directly enter operation mode;
Refer to shown in Fig. 8, enter after operation mode, start micropump 31 in opening 511 places of wound sealer 51, meaning is that wound forms subnormal ambient and extracts waste liquid (for example pus), and correspond in liquid-collection bag 41 and form positive pressure environment, under operation mode, further include malleation detection process and negative pressure detection process, malleation detection process is in order to detect the malleation value in liquid-collection bag 41, and negative pressure detection process is in order to detect the negative pressure value of wound;
Whether malleation detection process the is detected liquid-collection bag 41 malleation value of sense terminal 412 by malleation sensor 22 is normal, in the time that the liquid that the fluid circuit between liquid-collection bag 41 and other members comes off or liquid-collection bag 41 is subject to collecting in outside excessive pressure or liquid collecting bag 41 has reached maximum size, the malleation value of sense terminal 412 all can be in abnormality, and now microprocessor 11 will stop micropump 31 and turn round to avoid waste liquid cannot correctly flow in liquid-collection bag 41 or avoid liquid-collection bag 41 to break because of improper pressurized or supersaturation;
Whether negative pressure detection process is detected wound sealer 51 negative pressure value at opening 511 places by negative pressure sensor 21 is normal, whether the negative pressure value that meaning detects wound is normal, in the time that fluid circuit stops up or has leakage situation, negative pressure value all can be in abnormality, and now microprocessor 11 will stop micropump 31 and turn round to avoid waste liquid to leak and send abnormal alert notification user.
Rely on the effect of aforementioned each program, the present invention can be turned round under the environment without anxiety in safety.
The above is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with preferred embodiment, but not in order to limit the present invention, any those skilled in the art, not departing from the scope of technical solution of the present invention, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solution of the present invention, any simple modification of above embodiment being done according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (14)
1. the back-feed control method of a negative-pressure wound caring system, negative-pressure wound caring system comprises a wound dressing device and a liquid-collection bag being communicated with wound dressing device, wound dressing device, actuator and liquid-collection bag form a fluid flow path and actuator between wound dressing device and liquid-collection bag, and this control method, it is characterized in that: include an operation mode, under operation mode in the time of micropump start, form a subnormal ambient extracting liquid in the opening part of this wound dressing device, liquid flows in liquid-collection bag by actuator, in this liquid-collection bag, relatively form positive pressure environment, this subnormal ambient is carried out to a negative pressure detection process, and this positive pressure environment is carried out to a malleation detection process, adjust the force value of positive pressure environment and subnormal ambient according to the detecting result feedback of malleation detection process and negative pressure detection process.
2. according to the back-feed control method of claim 1 negative-pressure wound caring system, it is characterized in that, forming in a subnormal ambient step in the opening part of this wound dressing device is that a pump is arranged between wound dressing device and liquid-collection bag, primer pump detaches the fluid of the opening part of wound dressing device, and forms subnormal ambient.
3. the back-feed control method of negative-pressure wound caring system according to claim 2, is characterized in that, above-mentioned malleation detection process comprises following steps:
Detecting current malleation value, is the malleation value by the sense terminal of a malleation detector detecting liquid-collection bag;
Whether the sense terminal malleation value that judges liquid-collection bag is abnormal, stops pump running, and finish operation mode if current malleation value is positioned at exceptional value; Otherwise if malleation value is positioned at normal value at present, holding pump turns round and gets back to the current malleation value step of detecting.
4. according to the back-feed control method of the negative-pressure wound caring system described in claim 2 or 3, it is characterized in that, above-mentioned negative pressure detection process comprises following steps:
Detect current negative pressure value, with the current negative pressure value of opening part of a negative pressure detector detecting wound dressing device;
Judge that whether current negative pressure value is abnormal, send abnormal warning if current negative pressure value is positioned at exceptional value, and finish operation mode; Otherwise if negative pressure value is positioned at normal value at present, holding pump turns round and gets back to the current negative pressure value step of detecting.
5. according to the back-feed control method of the negative-pressure wound caring system described in claims 1 to 3 any one, it is characterized in that, take a step forward and include a detecting pattern at execution operation mode, this detecting pattern comprises following steps:
Aeration step, starts micropump and inflates through fluid circuit;
Detect current malleation value, detect the current malleation value of the sense terminal of liquid-collection bag by malleation detector;
Judge that whether current malleation value is abnormal, current malleation value is positioned at exceptional value and sends abnormal warning, and detection of end pattern; Otherwise, detection of end pattern, and enter operation mode.
6. the back-feed control method of negative-pressure wound caring system according to claim 4, is characterized in that, takes a step forward and includes a detecting pattern at execution operation mode, and this detecting pattern comprises following steps:
Aeration step, starts micropump and inflates by fluid circuit;
Detect current malleation value, detect the current malleation value of the sense terminal of liquid-collection bag by malleation detector;
Judge that whether current malleation value is abnormal, current malleation value is positioned at exceptional value and sends abnormal warning, and detection of end pattern; Otherwise, detection of end pattern, and enter operation mode.
7. a negative-pressure wound caring system, includes:
One controller;
One sensor, its with controller between form and be electrically connected, sensor has a negative pressure detector and a malleation detector with detecting pressure, and has a relief valve;
One actuator, it has a micropump, between micropump and sensor, forms electrical interconnection;
One liquid collector, it includes a liquid-collection bag;
One wound dressing device, it has an opening;
Wherein sensor and liquid-collection bag form a fluid flow path, sensor and wound dressing device and form another fluid flow path;
Wherein wound dressing device, actuator and liquid-collection bag form a fluid flow path and actuator between wound dressing device and liquid-collection bag, it is characterized in that: in the time of micropump start, opening part in wound dressing device forms subnormal ambient extracting liquid, liquid flows in liquid-collection bag by actuator, in liquid-collection bag, form positive pressure environment, the subnormal ambient of the opening part of negative pressure detector to wound dressing device carries out negative pressure detecting, and malleation detector carries out malleation detecting to the positive pressure environment in liquid-collection bag.
8. negative-pressure wound caring system according to claim 7, it is characterized in that, between sensor and controller, be provided with disassembled electrical interconnection, the micropump of actuator has an entrance and an outlet section, between micropump and sensor, be provided with disassembled electrical interconnection, and between the entrance of micropump and sensor, be provided with disassembled fluid circuit, the liquid-collection bag of liquid collector has an entrance point and a sense terminal, between sense terminal and sensor, be provided with disassembled fluid circuit, and between the outlet section of entrance point and micropump, be provided with disassembled fluid circuit, between wound dressing device and sensor, be provided with disassembled fluid circuit, and between the entrance of wound dressing device and micropump, be provided with disassembled fluid circuit.
9. negative-pressure wound caring system according to claim 8, it is characterized in that, wound dressing device includes a wound sealer and a drainage unit, the opening of described wound dressing device forms in wound sealer, drainage unit is connected in opening and has the banded filtering material of bio-compatible, drainage unit is fixedly arranged in wound sealer, between drainage unit and negative pressure sensor and relief valve, is provided with disassembled fluid circuit, is provided with disassembled fluid circuit between the entrance of drainage unit and micropump.
10. negative-pressure wound caring system according to claim 9, it is characterized in that, sensor has a linkage interface, the linkage interface of sensor has an electrical connector and a liquid joint, actuator has a linkage interface, the linkage interface of actuator has an electrical connector and a fluid coupling, the electrical connector of actuator forms and is electrically connected with micropump, and the linkage interface of sensor and the linkage interface of actuator can plug to form and dock, wherein the electrical connector of sensor and the electrical connector of actuator join, and the fluid coupling of sensor and the fluid coupling of actuator join, further include a vent diverter, vent diverter has multiple runners, wherein a runner connects the entrance of micropump and the drainage unit of wound dressing device, another runner connects the fluid coupling of actuator and the drainage unit of wound dressing device.
11. according to the negative-pressure wound caring system described in claim 9 or 10, it is characterized in that, the entrance extension of micro-shape pump is provided with a conduit, and drainage unit extension is provided with another conduit, two catheter tips are respectively equipped with corresponding fluid coupling, and two conduits can be connected by fluid coupling with plugging.
12. negative-pressure wound caring systems according to claim 11, it is characterized in that, the extension of malleation sensor is provided with a conduit, and the catheter tip of malleation sensor is provided with fluid coupling, the corresponding fluid coupling that is provided with of sense terminal of liquid-collection bag, malleation sensor can be connected by two fluid couplings with the sense terminal of liquid-collection bag with plugging.
13. negative-pressure wound caring systems according to claim 12, is characterized in that, in the sense terminal of liquid-collection bag and the fluid coupling of actuator, are respectively equipped with a filter element, and filter element infiltrates sensor in order to stop infectious substance.
14. negative-pressure wound caring systems according to claim 13, is characterized in that, the entrance point of liquid-collection bag is provided with non-return valve to prevent the liquid return in liquid-collection bag.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010218972.XA CN102294075B (en) | 2010-06-25 | 2010-06-25 | Negative-pressure wound caring system and feedback control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010218972.XA CN102294075B (en) | 2010-06-25 | 2010-06-25 | Negative-pressure wound caring system and feedback control method thereof |
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| CN102294075A CN102294075A (en) | 2011-12-28 |
| CN102294075B true CN102294075B (en) | 2014-07-09 |
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| CN104174111A (en) * | 2014-09-11 | 2014-12-03 | 昆山韦睿医疗科技有限公司 | Negative pressure wound treatment device and control method thereof |
| CN109985283B (en) * | 2017-12-29 | 2021-08-13 | 厦门圣慈医疗器材有限公司 | Negative pressure wound therapy devices, systems, and methods |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101296716A (en) * | 2005-08-08 | 2008-10-29 | 创新治疗公司 | Wound irrigation device, pressure monitoring and control system |
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| SE533167C2 (en) * | 2008-04-09 | 2010-07-13 | Moelnlycke Health Care Ab | Device for treating wounds and means for making wound pads |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101296716A (en) * | 2005-08-08 | 2008-10-29 | 创新治疗公司 | Wound irrigation device, pressure monitoring and control system |
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