CN102294075A - 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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- CN102294075A CN102294075A CN201010218972XA CN201010218972A CN102294075A CN 102294075 A CN102294075 A CN 102294075A CN 201010218972X A CN201010218972X A CN 201010218972XA CN 201010218972 A CN201010218972 A CN 201010218972A CN 102294075 A CN102294075 A CN 102294075A
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- negative pressure
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- wound
- 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 care system, it refers to a kind ofly be used in wound forming subnormal ambient with the care system of accelerating wound healing and the back-feed control method of this system.
Background technology
The main utilization of negative pressure wound therapy (Negative Pressure Wound Therapy) is sealed patch, soft sucker or biocompatibility porous material etc. and is attached on the wound, and the binding vacuum pump forms subnormal ambient in wound, extracting wound pus and infected material, and attract health tissues liquid keep moist treatment environment, and promote arround blood microcirculation and reach the effect of accelerating wound healing.
In order to cooperate negative pressure wound therapy, developed in the prior art and negative pressure wound and look after device, system is connected in liquid collecting housing rear end with vacuum pump, vacuum pump forms subnormal ambient to extract waste liquid and to be collected in the liquid collecting housing in wound and liquid collecting housing, utilize negative pressure value in the sensor detecting liquid collecting housing with the whether normal operation of affirmation system, then the distance of meaning person's pump and wound is far away but vacuum pump is located at liquid collecting housing rear end, pump need expend bigger energy can reach the function that forms subnormal ambient and extract waste liquid, therefore, the negative pressure wound of prior art is looked after device and has been planned vacuum pump directly is connected with the things such as patch that are attached at wound, the rear end of vacuum pump is connected with the liquid collecting housing so that waste liquid is imported wherein again collects, yet, so configuration then make do not have in the liquid collecting housing with wound in identical subnormal ambient, so 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 care system, adopts positive negative pressure two-wire detecting, comes the 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 care system of design, wherein the negative pressure wound care system comprises a wound dressing device and a liquid-collection bag that is communicated with the wound dressing device, and this control method includes an operation mode, opening part in this wound dressing device under the operation mode forms a subnormal ambient, then constitute positive pressure environment in this liquid-collection bag relatively, this subnormal ambient is carried out a negative pressure detection process, and this positive pressure environment carried out a malleation detection process, adjust the force value of positive pressure environment and subnormal ambient according to the detecting feedback as a result of malleation detection process and negative pressure detection process.
And according to aforementioned back-feed control method, the present invention is corresponding to have designed a kind of negative pressure wound care 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, forms electrical interconnection between micropump and sensor;
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, when the micropump start, opening part in the wound dressing device forms subnormal ambient and extracts liquid, liquid flows in the liquid-collection bag by actuator, then forms positive pressure environment in the 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 the malleation value that also can detect in the liquid-collection bag is normal on the one hand, so the system that still can keep turns round under all normal state of positive negative pressure, and then the preferableization configuration that makes pump be located between liquid-collection bag and wound can operate smoothly.
Moreover, negative pressure wound care system of the present invention can further design, wherein be provided with disassembled electrical interconnection between sensor and controller, the micropump of actuator has an entrance and an outlet section, be provided with disassembled electrical interconnection between micropump and sensor, and be provided with disassembled fluid circuit between the entrance of micropump and sensor, the liquid-collection bag of liquid collector has an entrance point and a sense terminal, be provided with disassembled fluid circuit between sense terminal and sensor, and be provided with disassembled fluid circuit between the outlet section of entrance point and micropump, be provided with disassembled fluid circuit between wound dressing device and sensor, and be provided with disassembled fluid circuit between the entrance of wound dressing device and micropump.
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 then each assembly can be disassembled maintenance easily;
2, the service life of each assembly is all inequality, for example liquid collector and wound dressing device belong to consumptive material and take normal replacing, controller, actuator and sensor then service life longer, so disassembled design makes user can disassemble and change each assembly easily;
3, based on each inter-module is disassembled setting, when user is displaced between the difference inhabitation institute (for example hospital and household), can only carry the part assembly, and residue partly assembly can prepare 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 when arriving at different inhabitation institute, directly peg graft and use, like this then can significantly reduce the user required volume that carries and weight when mobile;
4, in fluid flow path, because actuator is positioned at the liquid-collection bag front end, so shortened actuator to wound distance, therefore the micropump in the actuator can adopt than the more low power motor of prior art and can reach the effect that produces negative pressure and extraction waste liquid in the wound, then can effectively dwindle the volume of actuator, and the use that can save electric power.
Description of drawings
Fig. 1 is a stereo appearance figure of the present invention;
Fig. 2 is a system line sketch map of the present invention;
Fig. 3 is a wound dressing device axonometric chart of the present invention;
Fig. 4 is an 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 a sense mode flow chart of the present invention;
Fig. 8 is an operation mode flow chart of the present invention.
The specific embodiment
Following conjunction with figs. and preferred embodiment of the present invention, further setting forth the present invention is to reach the technological means that predetermined goal of the invention is taked.
See also shown in Figure 1ly, negative pressure wound care system of the present invention includes a controller 10, a sensor 20, an actuator 30, a liquid collector 40, an and wound dressing device 50.
See also Figure 1 and Figure 2, include a microprocessor 11 and a power supply 12 in the aforesaid controller 10, power supply 12 is responsible for the whole electric power of supply, can be set of cells or can directly be connected with external power source, and controller 10 is provided with control panels 13 outward to arrange microprocessor 11 and power supply 12.
Include a negative pressure sensor 21 in the aforesaid sensor 20, reach a malleation sensor 22, a relief valve 23, relief valve 23 makes the present invention can have the pattern that intermittently starts in order to regulate the pressure of entire system of the present invention.
Include a micropump 31 in the aforesaid actuator 30.
Aforesaid liquid collector 40 includes a liquid-collection bag 41 and and absorbs material 42, absorbs material 42 and is located in the liquid-collection bag 41.
See also shown in Figure 3, aforesaid wound dressing device 50 includes a wound envelope film 51 and a drainage unit 52, wound envelope film 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 the fluid circuit in order to barrier liquid (as the wound pus) solid fragment materials such as (as fragments of tissue) in addition, drainage unit 52 is fixedly arranged on the wound envelope film 51, in preferred embodiment, drainage unit 52 is fixedly arranged on the wound envelope film 51 in ultrasound welding mode.
See also Fig. 2 and shown in Figure 4, the present invention has electrical interconnection and fluid path so that each assembly is connected, and wherein fluid path more comprises fluid access path and fluid access path;
The entrance 311 of the micropump 31 of actuator 30 forms the fluid access path with drainage unit 52, the outlet section 312 of the micropump 31 of actuator 30 forms the fluid access paths 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 the liquid-collection bag 41 and contaminated wound, aforesaid fluid access path can rely on conduit 64 and corresponding fluid coupling 65 to form the fluid access path, for example micropump 31 and drainage unit 52 extend respectively and are provided with conduit 64, two conduits, 64 ends are provided with relative fluid coupling 65, form the fluid access path by two fluid couplings, 65 butt joint backs;
The malleation sensor 22 of sensor 20 forms the fluid access path with the sense terminal of liquid-collection bag 41 412, the negative pressure sensor 21 of sensor 20 and relief valve 23 form the fluid access path with drainage unit 52, in the preferred embodiment, negative pressure sensor 21 and relief valve 23 form the 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, forms the fluid access path by two fluid couplings, 65 butt joint backs;
See also Fig. 5 and shown in Figure 6, in preferred embodiment, sensor 20 has a linkage interface 201, linkage interface 201 has an electrical connector 202 and a fluid joint 203, actuator 30 has a linkage interface 301, linkage interface 301 has an electrical connector 302 and a fluid joint 303, the electrical connector 302 of actuator 30 forms with micropump 31 and is electrically connected, one vent diverter 66 has a first flow 661 and one second runner 662, first flow 661 connects the entrance and the drainage unit 52 of micropump 31, second runner 662 connects the fluid coupling 303 and drainage unit 52 of actuator 30, and the linkage interface 201 of sensor 20 can form with the linkage interface 301 of actuator 30 with plugging and docks, and 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 and the fluid coupling 303 of actuator 30 join.
Furthermore, be provided with filter element 70 in the fluid coupling 303 of the sense terminal 412 of liquid-collection bag 41 and actuator 30, filter element 70 flows in the sensor 20 in order to stop infectious substance.
By the aforementioned setting of respectively organizing dismountable electrical interconnection and fluid circuit, make each element of the present invention independently to disassemble, also can overhaul separately and be changed.
During start of the present invention, utilize wound envelope film 51 to coat wounds and with opening 511 corresponding to wound, user starts micropump 31 by the control panel 13 of controller 10, micropump 31 forms subnormal ambient by fluid circuit and extracts waste liquid in the wound (as pus etc.) simultaneously in wound, waste liquid is admitted in the liquid-collection bag 41 after by micropump 31 and is collected.
Safety when keeping the present invention and operate in order to make, the present invention's design has corresponding back-feed control method, wherein includes detecting pattern and operation mode;
See also shown in Figure 7, when the present invention starts, at first enter detecting pattern, 31 pairs of total systems of micropump are inflated, whether the malleation of the sense terminal 412 of malleation sensor 22 detecting liquid-collection bags 41 is normal at this moment, unusually then represent to have in the fluid circuit part correctly not engage, will send unusual caution this moment and remind user to check; If all fluid circuits correctly engage, malleation sensor 22 will detect the malleation value for normal, then directly enter operation mode;
See also shown in Figure 8, after entering operation mode, start opening 511 places of micropump 31 in wound envelope film 51, meaning is that the wound forms subnormal ambient and extracts waste liquid (for example pus), and correspond in the liquid-collection bag 41 and form positive pressure environment, further include malleation detection process and negative pressure detection process under the operation mode, the malleation detection process is in order to the malleation value in the detecting liquid-collection bag 41, and the negative pressure detection process is in order to the negative pressure value of detecting wound;
Whether the malleation detection process is normal by the malleation value of the sense terminal 412 of malleation sensor 22 detecting liquid-collection bags 41, when the fluid circuit between liquid-collection bag 41 and other members comes off or liquid-collection bag 41 is subjected to collecting in outside excessive pressure or the liquid collecting bag 41 liquid has reached maximum size, the malleation value of sense terminal 412 all can be in abnormality, and microprocessor 11 will stop micropump 31 running to avoid waste liquid can't correctly flow in the liquid-collection bag 41 or to avoid liquid-collection bag 41 to break because of improper pressurized or supersaturation this moment;
Whether the negative pressure detection process is normal by the negative pressure value at opening 511 places of negative pressure sensor 21 detecting wound envelope films 51, whether the negative pressure value that meaning is promptly detected the wound is normal, when fluid circuit stops up or the leakage situation is arranged, negative pressure value all can be in abnormality, and microprocessor 11 will stop micropump 31 runnings to avoid the waste liquid leakage and to send unusual alert notification user this moment.
Rely on the effect of aforementioned each program, make the present invention under safety has the environment of anxiety, not turn round.
The above only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in the scope that does not break away from technical solution of the present invention, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, 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 care system, the negative pressure wound care system comprises a wound dressing device and a liquid-collection bag that is communicated with the wound dressing device, and this control method, it is characterized in that: include an operation mode, opening part in this wound dressing device under the operation mode forms a subnormal ambient, then constitute positive pressure environment in this liquid-collection bag relatively, this subnormal ambient is carried out a negative pressure detection process, and this positive pressure environment carried out a malleation detection process, adjust the force value of positive pressure environment and subnormal ambient according to the detecting feedback as a result of malleation detection process and negative pressure detection process.
2. according to the back-feed control method of claim 1 negative pressure wound care system, it is characterized in that, forming in the subnormal ambient step in the opening part of this wound dressing device is that a pump is arranged between wound dressing device and the liquid collector, primer pump detaches the fluid of the opening part of wound dressing device, and constitutes subnormal ambient.
3. the back-feed control method of negative pressure wound care system according to claim 2 is characterized in that, above-mentioned malleation detection process comprises following steps:
Detecting present malleation value, is the malleation value by the sense terminal of malleation detector detecting liquid-collection bag;
Whether the sense terminal malleation value of judging liquid-collection bag is unusual, then stops the pump running if present malleation value is positioned at exceptional value, and finishes operation mode; Otherwise if the malleation value is positioned at normal value at present, then holding pump turns round and gets back to detecting malleation value step.
4. according to the back-feed control method of claim 2 or 3 described negative pressure wound care systems, it is characterized in that above-mentioned negative pressure detection process comprises following steps:
Detect present negative pressure value, with the present negative pressure value of opening part of negative pressure detector detecting wound dressing device;
Judge whether present negative pressure value is unusual, then send unusual caution, and finish operation mode if present negative pressure value is positioned at exceptional value; Otherwise if negative pressure value is positioned at normal value at present, then holding pump turns round and gets back to detecting negative pressure value step.
5. according to the back-feed control method of each described negative pressure wound care system of claim 1 to 3, it is characterized in that include a detecting pattern taking a step forward of operation mode of execution, this detecting pattern comprises following steps:
Aeration step starts micropump permeate fluid pipeline and inflates;
Detect present malleation value, detect the present malleation value of the sense terminal of liquid-collection bag by the malleation detector;
Judge whether present malleation value is unusual, present malleation value is positioned at exceptional value and then sends unusual caution, and the detection of end pattern; Otherwise, detection of end pattern then, and enter operation mode.
6. the back-feed control method of negative pressure wound care system according to claim 4 is characterized in that, includes a detecting pattern taking a step forward of operation mode of execution, and this detecting pattern comprises following steps:
Aeration step starts micropump and inflates by fluid circuit;
Detect present malleation value, detect the present malleation value of the sense terminal of liquid-collection bag by the malleation detector;
Judge whether present malleation value is unusual, present malleation value is positioned at exceptional value and then sends unusual caution, and the detection of end pattern; Otherwise, detection of end pattern then, and enter operation mode.
7. a negative pressure wound care system is characterized in that, 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, forms electrical interconnection between micropump and sensor;
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, when the micropump start, opening part in the wound dressing device forms subnormal ambient and extracts liquid, liquid flows in the liquid-collection bag by actuator, then forms positive pressure environment in the liquid-collection bag.
8. negative pressure wound care system according to claim 7, it is characterized in that, be provided with disassembled electrical interconnection between sensor and controller, the micropump of actuator has an entrance and an outlet section, be provided with disassembled electrical interconnection between micropump and sensor, and be provided with disassembled fluid circuit between the entrance of micropump and sensor, the liquid-collection bag of liquid collector has an entrance point and a sense terminal, be provided with disassembled fluid circuit between sense terminal and sensor, and be provided with disassembled fluid circuit between the outlet section of entrance point and micropump, be provided with disassembled fluid circuit between wound dressing device and sensor, and be provided with disassembled fluid circuit between the entrance of wound dressing device and micropump.
9. negative pressure wound care system according to claim 8, it is characterized in that, the wound dressing device includes a wound envelope film and a drainage unit, the opening of described wound dressing device forms on the wound envelope film, drainage unit is connected in opening and has the banded filtering material of bio-compatible, drainage unit is fixedly arranged on the wound envelope film, is provided with disassembled fluid circuit between drainage unit and negative pressure sensor and relief valve, is provided with disassembled fluid circuit between the entrance of drainage unit and micropump.
10. negative pressure wound care 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 joint, the electrical connector of actuator forms with micropump and is electrically connected, and the linkage interface of sensor can form with the linkage interface of actuator with plugging and docks, wherein the electrical connector of the electrical connector of sensor and actuator joins, and the fluid coupling of the fluid coupling of sensor and actuator joins, further include a vent diverter, vent diverter has a plurality of 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 claim 9 or 10 described negative pressure wound care systems, it is characterized in that the entrance extension of little shape pump is provided with a conduit, the 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. wound negative pressure care system 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 joint that is provided with of the sense terminal of liquid-collection bag, the malleation sensor can be connected by two fluid couplings with the sense terminal of liquid-collection bag with plugging.
13. wound negative pressure care system according to claim 12 is characterized in that, is respectively equipped with a filter element in the sense terminal of liquid-collection bag and the fluid coupling of actuator, filter element infiltrates sensor in order to stop infectious substance.
14. wound negative pressure care system 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 the liquid-collection bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010218972.XA CN102294075B (en) | 2010-06-25 | 2010-06-25 | Negative-pressure wound caring system and feedback control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010218972.XA CN102294075B (en) | 2010-06-25 | 2010-06-25 | Negative-pressure wound caring system and feedback control method thereof |
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| Publication Number | Publication Date |
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| CN102294075A true CN102294075A (en) | 2011-12-28 |
| CN102294075B CN102294075B (en) | 2014-07-09 |
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| CN201010218972.XA Expired - Fee Related CN102294075B (en) | 2010-06-25 | 2010-06-25 | Negative-pressure wound caring system and feedback control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109985283A (en) * | 2017-12-29 | 2019-07-09 | 厦门圣慈医疗器材有限公司 | Negative pressure wound therapy apparatuses, system and method |
Citations (2)
| 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 |
| WO2009126102A1 (en) * | 2008-04-09 | 2009-10-15 | Mölnlycke Health Care Ab | A device for treatment of wounds and a method for manufacturing of wound pads |
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2010
- 2010-06-25 CN CN201010218972.XA patent/CN102294075B/en not_active Expired - Fee Related
Patent Citations (2)
| 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 |
| WO2009126102A1 (en) * | 2008-04-09 | 2009-10-15 | Mölnlycke Health Care Ab | A device for treatment of wounds and a method for manufacturing of wound pads |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109985283A (en) * | 2017-12-29 | 2019-07-09 | 厦门圣慈医疗器材有限公司 | Negative pressure wound therapy apparatuses, system and method |
| 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 |
| US11471585B2 (en) | 2017-12-29 | 2022-10-18 | Xiamen Suneetek Medical Equipment Co., Ltd. | Negative pressure wound therapy device, system and method |
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| Publication number | Publication date |
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| CN102294075B (en) | 2014-07-09 |
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Granted publication date: 20140709 Termination date: 20200625 |