CN103203068B - Negative-pressure wound nursing system with buffering unit - Google Patents
Negative-pressure wound nursing system with buffering unit Download PDFInfo
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- CN103203068B CN103203068B CN201210010879.9A CN201210010879A CN103203068B CN 103203068 B CN103203068 B CN 103203068B CN 201210010879 A CN201210010879 A CN 201210010879A CN 103203068 B CN103203068 B CN 103203068B
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- wound
- buffer cell
- negative
- pressure
- actuator
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Abstract
The invention relates to a negative-pressure wound nursing system with a buffering unit. The negative-pressure wound nursing system is provided with a buffering unit which is arranged between an actuator and a wound dressing, wherein the buffering unit is provided with a physical condition which is approximate to a wound, so that self-stored negative pressure can be consumed and taken as negative compensation of the wound to resist micro pressure rise of the wound in the state of micro leakage; and moreover, the actuator acts on the wound indirectly, so that pain of the patient during pressure drop is reduced.
Description
Technical field
The present invention is a kind of negative-pressure wound caring system of tool buffer cell, refers to a kind of for forming subnormal ambient with the care system of accelerating wound healing in wound.
Background technology
Negative pressure wound therapy (Negative Pressure Wound Therapy), it mainly utilizes sealing patch, soft sucker or biocompatibility porous material etc. to be attached on wound, and link vacuum pump form subnormal ambient in wound, to extract wound pus and infected material, and attract health tissues liquid to maintain moist Curing circumstance and blood microcirculation and reach effect of accelerating wound healing arround promoting, in order to coordinate negative pressure wound therapy, in prior art, develop negative-pressure wound caring system.
Refer to shown in Fig. 6, during the negative-pressure wound caring System Operation of prior art, the reference value that its pressure feedback controls detects the intrinsic pressure of the liquid collector 92 of actuator 91 front end, maybe by detecting point 93 close wound 94 as far as possible, to measure comparatively close to the force value in wound 94, perform feedback after receiving signal by controller 95 again to control, determine whether must restarting actuator 91 to maintain the negative pressure value in wound 94, and then guarantee that in wound 94, negative pressure value can maintain in certain scope, but, no matter the force value at liquid collector 92 place or detecting point 93 places still can with the true pressure value difference to some extent at wound 94 place, therefore the time point starting actuator 91 incites somebody to action error to some extent.
Moreover in actual service condition, the micro-leakage phenomenon produced due to wound exudate outflow or wrapping breakage is rather common, and in wound, negative pressure trace changes frequent.If controller starts actuator again and again because of micro-negative pressure variation or still continue low-speed running when voltage stabilizing, maintain negative pressure in wound, then will cause the loss of energy and improve running cost; If but improve startup threshold values, restart the negative pressure value in actuator reply wound after namely accumulating larger pressure differential, then pressure amplitude in short time wound will be caused excessive and cause wound pain.
Again, the negative-pressure wound caring system of prior art separately develops and is a kind ofly connected between liquid collector and wound by actuator, and now actuator will directly act on wound, then during actuator effect, easily make sufferer feel blood pressure lowering time pain.
Summary of the invention
Because every disappearance of aforesaid prior art, the present invention devises a kind of negative-pressure wound caring system of tool buffer cell, under its state can not started at actuator, maintain the negative pressure value of wound, pressure variety when also available buffer actuator starts, wound caused.
For reaching above-mentioned goal of the invention, the present invention devises a kind of negative-pressure wound caring system of tool buffer cell, comprising a controller, a sensor, an actuator, a liquid collector, a wound dressing and in order to react the negative pressure variation of wound and to provide the buffer cell of negative pressure compensating, controller is formed with sensor and actuator respectively and is electrically connected, actuator is connected with liquid collector with buffer cell respectively, sensor connects with buffer cell, and buffer cell is connected between wound dressing and actuator.
The invention has the advantages that, buffer cell is by consuming negative pressure own to provide negative pressure compensating, the wound of sufferer then can be made to resist over the course for the treatment of because sepage is flowed out or wrap up the negative pressure microlitre that micro-leakage causes, moreover, due to actuator be directly for buffer cell effect again indirect action in wound, therefore extract wound inner fluid with the blood pressure lowering means comparatively relaxed, the pain of sufferer when wound blood pressure lowering can be reduced.
Accompanying drawing explanation
Fig. 1 is element schematic of the present invention;
Fig. 2 is structural representation of the present invention;
Fig. 3 is the exploded view of buffer cell of the present invention;
Fig. 4 is that the present invention carries out leaking and micro-leakage test pressure variation diagram;
Fig. 5 is that the present invention carries out manually opened valve and starts the staggered rear pressure variation of actuator;
Fig. 6 is the structural representation of prior art.
Detailed description of the invention
Below coordinating preferred embodiment graphic and of the present invention, setting forth the technological means that the present invention takes for reaching predetermined goal of the invention further.
Refer to shown in Fig. 1 and Fig. 2, the present invention includes controller 10, sensor 20, actuator 30, liquid collector 40, buffer cell 50 and a wound dressing 60.
Aforesaid controller 10 is formed with sensor 20 and actuator 30 respectively and is electrically connected, the signal transmission of sensor 20 is to controller 10, determine whether start actuator 30 by controller 10, actuator 30 is connected with liquid collector 40 with buffer cell 50 respectively, in the preferred embodiment, actuator 30 is connected to the buffer cell 50 that connects with buffer cell 50 of sensor 20 between buffer cell 50 and liquid collector 40 and is connected between wound dressing 60 and actuator 30.
Buffer cell 50 has the physical condition similar with true wound, and buffer cell 50 is connected with wound dressing 60, therefore the intrinsic pressure of true wound can be similar to, therefore sensor 20 is used as the reference value of system feedback control by the pressure detecting buffer cell 50, buffer cell 50 passes through the negative pressure of consumption itself, immediately to provide wound dressing 60 place negative pressure compensating.
Refer to shown in Fig. 3, in the preferred embodiment, buffer cell 50 includes a water accepting layer 51, one air-permeable layer 52 and a lamina reticularis 53, wherein air-permeable layer 52 is connected with sensor 20, water accepting layer 51 is high molecular foam material (such as PVA, Polyvinyl Alcohol polyvinyl alcohol) made, it has high water suction ratio and high volumetric expansion variation characteristic, its water absorption character is reversible, when being in negative pressure state in buffer cell 50, its volume is presented draining characteristics by compressing, and when negative pressure in buffer cell 50 disappears, its volume starts expand and present strong water absorption function ability, so that sepage remaining in pipeline is sucked, and present Water storage characteristics, air-permeable layer 52 is permeable watertight material (such as PVDF, Polyvinylidene fluoride gathers difluoroethylene), sepage is avoided to flow in sensor 20 by its material characteristic, sensor 20 detects the negative pressure variation in buffer cell 50 by air-permeable layer 52 simultaneously, lamina reticularis 53 can by polypropylene (PP, Polypropylene) made, its inside comprises space, when buffer cell 50 is in negative pressure state, the space simulation wound tissue of lamina reticularis 53, the flow channel that sepage is suitable is provided, to prevent whole buffer cell 50 avalanche locking.
Refer to shown in Fig. 2, when utilizing the present invention, wound dressing 60 is in order to be covered in the wound of sufferer, start actuator 30 and form negative pressure state to be made wound by buffer cell 50, sensor 20 is detected the negative pressure value at buffer cell 50 place and is fed back to controller 10, controller 10 determines whether starting actuator 30 blood pressure lowering again depending on detected negative pressure value, and the waste liquid of wound is sequentially entered liquid collector 40 by wound dressing 60, buffer cell 50, actuator 30 and is collected.
Refer to shown in Fig. 4, the effect that the present invention utilizes the two kinds of states manufacturing pipeline leakage and micro-leakage to produce to test buffer cell, start actuator under original state to make buffer cell pressure for-210mmHg and then to make wound pressure for-150mmHg, in process afterwards, all do not restart actuator; The situation manufacturing pipeline leakage when time t1 maintains the several seconds, now wound pressure significantly rises to close-90mmHg, after pipeline recovers normal connection, the force value of buffer cell slowly rises the negative pressure value compensating wound, the force value of wound is made to drop to-120mmHg, because the situation voltage rise of leaking is more, therefore buffer cell cannot allow the force value of wound fall back the initial value before leaking, but can fall back leaking the boosting part caused; The situation manufacturing the micro-leakage of pipeline when time t2 and t3 maintains the several seconds, now wound pressure rises to close-90mmHg a little, when pipeline recovers normally, the force value of buffer cell slowly rises the negative pressure value compensating wound, the force value of wound is made to drop to-120mmHg, because the situation voltage rise of micro-leakage is less, therefore buffer cell effectively can resist the voltage rise that micro-leakage causes, and rapidly the negative pressure of wound is restored the negative pressure value to micro-leakage.
Therefore, by above-mentioned experimental data, the negative pressure compensating when setting learning buffer cell can change as wound pressure immediately can be known, therefore can under the prerequisite not starting actuator, utilize buffer cell to flow out or wrap up to the sepage of resisting wound the negative pressure microlitre phenomenon that micro-leakage causes.
Refer to shown in Fig. 5, the present invention utilizes manual actuator and valve to manufacture active negative pressure starting state, starts actuator to make buffer cell pressure for-180mmHg and then to make wound pressure for-80mmHg under original state; When time t4, t6, manually opened valve of short duration time makes buffer cell force value rise rapidly, now obviously can observe out the ascensional range of wound pressure value also be not as large as buffer cell, in same time, the force value of buffer cell rises to 0mmHg rapidly by close-100mmHg, wound pressure value only slowly rises to-30mmHg by close-70mmHg, and when time t8, even if the time of Open valve doubles, wound pressure value still maintains the trend slowly risen; After valve-off, when time t5, t7, t9, start actuator with blood pressure lowering again, now also obviously can observe out the fall of wound pressure value also be not as large as buffer cell, in same time, the force value of buffer cell is down to-210mmHg by 0mmHg, but wound pressure value is only down to about-60mmHg by close-30mmHg and is remained stable.
Therefore, can be known by above-mentioned experimental data and learn, the buck action carried out due to actuator is directly to buffer cell effect, indirectly wound pressure is balanced again by buffer cell, therefore buffer cell can effectively buffer lift pressure to the impact of wound, with the hands degree comparatively relaxed to carry out buck, and then reduce the pain of sufferer when wound blood pressure lowering.
The above is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, not departing from the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (6)
1. the negative-pressure wound caring system of a tool buffer cell, it is characterized in that, comprise a controller, one sensor, one actuator, one liquid collector, one wound dressing, and one in order to react the negative pressure variation of wound and to provide the buffer cell of negative pressure compensating, described controller is formed with described sensor and described actuator respectively and is electrically connected, described actuator is connected with described liquid collector with described buffer cell respectively, described sensor connects with described buffer cell, described buffer cell is connected between described wound dressing and described actuator, described actuator is connected between described buffer cell and described liquid collector.
2. the negative-pressure wound caring system of tool buffer cell according to claim 1, it is characterized in that, described buffer cell includes a water accepting layer, an air-permeable layer and a lamina reticularis, the volume of described water accepting layer presents draining characteristics when being compressed, water absorption character is presented during volumetric expansion, described air-permeable layer is connected with described sensor, and lamina reticularis inside comprises space.
3. the negative-pressure wound caring system of tool buffer cell according to claim 2, is characterized in that, described water accepting layer is that high molecular foam material is made.
4. the negative-pressure wound caring system of the tool buffer cell according to Claims 2 or 3, is characterized in that, described lamina reticularis is that polypropylene is made.
5. the negative-pressure wound caring system of the tool buffer cell according to Claims 2 or 3, is characterized in that, described air-permeable layer is made for gathering difluoroethylene.
6. the negative-pressure wound caring system of tool buffer cell according to claim 4, is characterized in that, described air-permeable layer is made for gathering difluoroethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210010879.9A CN103203068B (en) | 2012-01-13 | 2012-01-13 | Negative-pressure wound nursing system with buffering unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210010879.9A CN103203068B (en) | 2012-01-13 | 2012-01-13 | Negative-pressure wound nursing system with buffering unit |
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| Publication Number | Publication Date |
|---|---|
| CN103203068A CN103203068A (en) | 2013-07-17 |
| CN103203068B true CN103203068B (en) | 2015-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210010879.9A Expired - Fee Related CN103203068B (en) | 2012-01-13 | 2012-01-13 | Negative-pressure wound nursing system with buffering unit |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104984462A (en) * | 2015-06-30 | 2015-10-21 | 昆山韦睿医疗科技有限公司 | Negative-pressure wound healing system and dressing assembly thereof |
| TWI618037B (en) * | 2017-06-09 | 2018-03-11 | Wound model |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6648862B2 (en) * | 2001-11-20 | 2003-11-18 | Spheric Products, Ltd. | Personally portable vacuum desiccator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7942866B2 (en) * | 2003-08-28 | 2011-05-17 | Boehringer Technologies, L.P. | Device for treating a wound |
| MX2008002880A (en) * | 2005-09-07 | 2008-03-27 | Tyco Healthcare | Self contained wound dressing apparatus. |
| US20110196321A1 (en) * | 2009-06-10 | 2011-08-11 | Tyco Healthcare Group Lp | Fluid Collection Canister Including Canister Top with Filter Membrane and Negative Pressure Wound Therapy Systems Including Same |
| GB201008347D0 (en) * | 2010-05-19 | 2010-07-07 | Smith & Nephew | Wound protection |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6648862B2 (en) * | 2001-11-20 | 2003-11-18 | Spheric Products, Ltd. | Personally portable vacuum desiccator |
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