CN101378794A - A suction method and a wound suction system - Google Patents
A suction method and a wound suction system Download PDFInfo
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- CN101378794A CN101378794A CNA200780004326XA CN200780004326A CN101378794A CN 101378794 A CN101378794 A CN 101378794A CN A200780004326X A CNA200780004326X A CN A200780004326XA CN 200780004326 A CN200780004326 A CN 200780004326A CN 101378794 A CN101378794 A CN 101378794A
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Abstract
The present invention provides a pumping system which is used for eliminating fluid in the surface, such the wounded position. The system comprises a covering object (1) which can be attached to the perimeter of the surface to form a closed pumping space hermetical to the surrounding space. The system also comprises a pump (4) which is communicated with the fluid of closing object through a conduit (2) to provide pressure difference between the pumping pressure in the closing object and the atmosphere of the surrounding space. The system comprises a flushing device (11) for cleaning the conduit for improving the well-known system to facilitate the pressure measurement.
Description
Technical field
The present invention relates to a kind of method that is used to get rid of fluid etc.This method can be applicable to the Wound healing and bone regeneration that for example is used to strengthen wound healing.The invention still further relates to a kind of Wound healing and bone regeneration suction system, described system comprises the wound covering thing, and described wound covering thing can be attached on the biological wound perimeter, to form the suction space of sealing.This system also comprises pump, described pump by pipeline in suction space swabbing pressure and the air pressure of surrounding space between pressure reduction is provided.
Background technology
Have found that the fluid conduction of wound promotes tissue growth, and encourage thus and shorten healing time.Treatment has been carried out many year, and develops various therapeutic equipments and be used for providing suction to wound.
US 6,648,862 have described a kind of vacuum desiccator that adopts jar, the described canned trapping agent that has, and WO 97/18007 discloses a kind of portable wound therapy equipment, and described equipment has jar and pump, and described pump is arranged in the shell, this shell helps portable use, for example can wear on braces or by belt.
Disclose a kind of system in WO 97/18007, this system has the valve that is connected with wound closure fluid, and described valve can be activated, so that alleviate the pressure-time section on the wound.Valve is closed when pump operated.
In known device, the wound covering thing is fixed on the biological skin with sealing means, thereby forms closure around wound.Covering is connected on the pump, and applies suction, so that bring out negative pressure on wound.This suction makes transudate and other pollutant move to container from closure, such as the jar that is used to receive transudate.Filter can prevent the exhaust emission surrounding space.
Pump produces the negative pressure that is applied on the wound.Because pump is connected on the wound closure away from the wound setting and by pipeline, thus may be difficult to control the correct pressure on the wound, because pipeline often can filled with fluid or from the slough of wound, this situation is with the pressure that influences in the system.Therefore the negative pressure that is applied by pump may depart from the negative pressure on the wound.Below, a kind of pressure that is lower than reference pressure of negative pressure means, and the reference pressure pressure of ambient atmosphere normally.
Summary of the invention
The purpose of some embodiments of the invention is:
-guarantee that correct measurement for example is used for the pressure of the negative pressure system of wound healing.
-reach and the surface that keeps being treated on the good negative pressure that forms.
-under the situation that does not influence surperficial upward pressure basically, avoid the pipeline between congested surface and the pump.
-a kind of system of smaller power consumption is provided, be used for getting rid of fluid by suction.
Therefore, the present invention provides a kind of being used for to get rid of fluidic method from the surface in first aspect, and described method comprises:
-provide covering, described covering can be attached on the surperficial periphery, with the closed-suction space that forms and surrounding space separates,
-first pipeline is provided, described first pipeline is forming flow path at the inlet in the suction space and between the outlet of suction space outside,
-suction by first pipeline, provide between swabbing pressure in suction space and the ambient pressure in the surrounding space pressure reduction and
-wash first pipeline by the flush fluid stream that the major part at least that flows through pipeline is provided in very first time section.
The fluid of getting rid of from the surface by suction can be the mixture of liquids and gases.When this mixture entered first pipeline, liquid can be full of pipeline and form liquid string (string), so barrier gas freely passes through pipeline.This may influence pressure and pressure measxurement in the closure, and may cause the fluctuation of surperficial upward pressure.If the surface is a wound surface, then the transudate from wound may further mix with solid particle, when described solid particle is arranged in first pipeline, has further increased the inaccuracy of pressure and measurement.
According to the present invention, this problem solves with the flush fluid flushing pipe by for example using first valve, and described first valve forms between pipeline and surrounding space and is communicated with.By providing fluid to flow through pipeline, can go out pipeline with being positioned at ducted object, and the pipeline that can more be cleaned.Through the accuracy of washing and therefore cleaner at least pipeline has improved measurement pressure in the suction space of piping, increased the ability of accurate setting pressure, and can reduce noise and energy consumption.So-called herein flushing refers to leaving the major part guiding flush fluid of obducent direction by pipeline, and its intensity makes to be got rid of liquid and randomly also have solid particle from flow path.
Pipeline can be that for example length is 0.5 meter to 2.5 meters flexible pipe for medical purpose or any kind of pipeline, for example plastic tube.Inlet can be attached on the covering, and perhaps pipeline can run through covering and extend in the suction space.In the opposite end of pipeline, outlet can for example be connected on the pump by separable attached interface unit.
Covering can form cavity, and described cavity has the opening that is centered on by the marginal portion, and described marginal portion is convenient to for example be airtight connected on the surface basically by soft elastic gum adhesive material.Covering can be block or half block vapor permeable for example, and water impermeable.
Flush fluid can be an atmospheric air, perhaps can be a kind of gas that for example has sterilization or similar detergent power, and can be between inlet and outlet or at least near inlet a bit, for example from apart from the distance that enters the mouth less than the pipeline total length 10 a bit provide mobile.Pipeline can by discharge a certain amount of flushing out air enter suction space or enter inlet near first pipeline of position wash.Flushing out air can discharge by first valve, and described first valve is set, with from the container of flush fluid is housed, perhaps simply by between surrounding space and the suction space or the release channel between surrounding space and the flow path control fluid and be communicated with.Very first time section can have the satisfied time span that flows through the whole length of first pipeline.Be that very first time section is selected according to the length and the flow velocity in the flow path of pipeline.Valve can be opened the short as far as possible time separately, so that the enough air-flows that just wash whole pipe and also keep negative pressure in the suction space to be provided, perhaps first pipeline can wash in the long term, check the pressure reduction between swabbing pressure and the ambient pressure in the meantime, so that the negative pressure in suction space can stop flushing before disappearing.
Suction can provide by using pump, and described pump suction is enough strong, so that for example produces 10 negative pressure to the 600mmHg scope, and the surface is left in the liquid suction.Negative pressure can or be determined with respect to reference pressure, or as absolute pressure, promptly determined with respect to the rigidity of pressure detecting film or with respect to the reference chamber in the pressure transducer usually.Pump can start in one second time, and for example part starts simultaneously with flushing pipe.
In order to determine the pressure reduction between swabbing pressure and the ambient pressure, can be by the pressure in the gauge measurement suction space of using known kind in this technology.Pressure gauge can be arranged in suction space, covering, flow path, for example is fixed on the pipeline, and perhaps in the pipeline exit back, perhaps it can form the part of pump.Replacedly or in addition, the absolute pressure of suction space can be by use reference space, and the closed cavity that promptly has pressure is definite, and swabbing pressure is with respect to the pressure measxurement of described closed cavity.In addition, in this case, pressure can be by being positioned at the gauge measurement of above-mentioned position.Pressure can be when pump just aspirates, and for example brief moment is determined after flushing.Like this, pressure can clean part timely moment relatively at pipeline to be determined, and pressure measxurement can be more accurate.If pipeline cleans, measure also may with manometric location independent.Pressure gauge can for example be arranged in pipeline or in the exit of pipeline, and because pipeline clean, can form swabbing pressure registration relatively accurately at the covering place so measure.Pressure can be for example by using successive (mimic) measuring technique or doing uninterrupted the measurement by carry out repeatedly continuously the side amount in the 3rd time period.
In a particular embodiment, the surface can be biological skin surface, and method goes for Wound healing and bone regeneration, removes fluid and transudate in the wound by row of conduits in described Wound healing and bone regeneration.
Especially combine with the suction of sensing surface treatment, for example aspect Wound healing and bone regeneration or may be because of aspect the treatment that is subjected to the delicate surface that too high swabbing pressure damages, it may be favourable being convenient to that good pressure controls.As mentioned above, Pressure gauge can be arranged in the suction space, flow path is interior or the exit of pipeline.According to the present invention, pressure control can be by there being when piping flows or when pressure reduction is stablized gaging pressure handle.In one embodiment, pressure reduction forms by the suction of pump, and subsequently, flushing pipe is to get rid of fluid and object, such as the transudate that may stick in the flow path.A blink after flushing stops, pressure reduction may increase after pressure reduction is stable.The 3rd time period especially can comprise a period of time of washing first pipeline or a period of time behind flushing first pipeline at least just in time.If wait for the long time, then there are new fluid, transudate etc. to enter flexible pipe and make the danger of pressure oscillation.For the orthochronous that obtains measuring, may wish to monitor the pressure of longer a period of time, for example monitoring comprises the pressure of at least one or two periods in above-mentioned first and second time periods.When pressure began to fluctuate, flushing may begin, and when flushing finishes, can monitoring pressure, and to determine the time of pressure stability.The pressure of of short duration mensuration can be used to control pump or similar control device after entering steady statue, is used to adjust pressure, and is used for the protection surface thus, prevents too big suction.
Aspect the fluid in getting rid of following surface, described surface is to the influence from surrounding air, and for example because contamination threat etc. may be responsive, flush fluid can be sterile gas, or has the gas that for example humidity, oxygen content etc. is had special characteristic.This fluid can for example be contained in the container under pressure, is released until fluid.If flush fluid is the normal air from surrounding space, perhaps combine with gas with special characteristic as special preventive measure, then aspirate and wash co-operating, enter suction space to prevent flush fluid.This can and always be lower than swabbing pressure by the pressure in the assurance flow path by the pressure reduction between the pressure in frequent monitoring swabbing pressure and the flow path and achieve the goal.Under any circumstance, can guarantee that pressure in the suction space always is lower than the pressure in the surrounding space before this.
It seems that from above-mentioned explanation fluidic method also can be considered as measuring the method for pressure in the suction system in the described up to now eliminating surface, perhaps can be considered as avoiding the method for in suction channel, blocking.
In second aspect, the invention provides a kind of fluidic suction system of wound that is used for getting rid of, described system comprises:
-covering, described covering can be attached on the periphery of wound, with the closed-suction space that forms and surrounding space separates,
-the first pipeline, described first pipeline is forming flow path at the inlet in the suction space and between the outlet of suction space outside,
-pump, described pump is communicated with first pipeline fluid, and provide between swabbing pressure that can be in suction space and the ambient pressure in the surrounding space pressure reduction and
-flusher, described flusher are used to provide the intermittent flow of air through at least a portion pipeline.
Can also comprise pressure-detecting device.This pressure-detecting device is usually away from the wound setting, and is for example relevant with pump head, driver element or control unit.
It is fixing basically that pressure reduction between swabbing pressure and the ambient pressure can keep, and perhaps it can conversion between different negative swabbing pressure values.Preferably pressure reduction is controlled at by in the upper and lower bound institute restricted portion.
Preferably, valve can be operated when pump operation, so that the pressure in the closure that do not raise.
The operation of valve can be automatically, thus in scope at regular intervals starter gate valve, perhaps valve can be by the signal operation from pressure-detecting device or control unit.This valve can start when reaching the predetermined pressure level, if reach the upper limit, then valve can be opened, if reach lower limit, then valve can cut out and randomly can send to pump the signal of rising negative pressure.
Pressure-detecting device can be set, perhaps replacedly, system can be adjusted to the satisfactory pressure level, and start the intermittence of valve and can be used for the level that keep-ups pressure.In one embodiment, when reaching predetermined pressure stage, pressure-detecting device can send signal to the control unit or first valve.
Valve can be opened a blink, and washing first pipeline, and after this pressure measxurement can carry out immediately, so that reach correct piezometry.
System can also comprise control unit, thereby the motility of pressure and adjustment pump and/or valve is for example write down in one or more operations of control system, so that keep predetermined negative pressure.Especially, control unit can comprise control device, thereby operates first valve, to provide air through the mobile washing time section of piping.Control device can comprise data processing equipment, and described data processing equipment programs, so that:
-from many pressure measxurements, sample, each measure in the flow path, in the suction space or the pressure of measuring in the exit is all effective and
-according to the sampling pattern, select to implement the time of flushing suction channel, and randomly,
-according to above-mentioned model selection controlled pressure, and utilize described controlled pressure to come the operation of control pump.
Blood processor can for example comprise one group of instruction, and the form of software code is taked in described instruction, so control device becomes and is suitable for implementing above-mentioned steps.As example, control device can be evaluated pressure, and can begin flushing pipe when pressure oscillation.After the flushing, monitoring pressure once more, and when pressure stability, this unit can be evaluated pressure and whether be suitable for above-mentioned treatment, and whether be necessary to adjust pump according to required pressure and the pressure that obtains.Replacedly, the first valve manual operation.
First valve is preferably located in the near-end of first pipeline, promptly towards obducent that end.This position makes gas can flow through whole first pipeline basically when starting first valve, therefore ducted any liquid string is rinsed out.
Opposite with the system that forms bleed hole on the pump closed conduct or in the covering, closed or open position can be operated or be in to first valve of the present invention.Therefore, when reaching enough negative pressure, pump can stop, and starts once more when negative pressure reduces.Bleed hole is often opened, and requires the pump operation that keeps, so that keep negative pressure.Pump is often operated consumed power, and has noise and meeting noise patient.
First valve can be connected on first pipeline by second pipeline.Be attached to pipeline on the wound closure and can be divided into the bifurcated of first pipeline and second pipeline, described first pipeline is connected on the pump, and described second pipeline is connected on first valve.Therefore, valve does not directly contact with the fluid that flows through this first pipeline with first pipeline, and can reduce the danger that makes valve congested, and the remainder that valve can more close system or be combined in the remainder of system.In one embodiment, first and second pipelines provide the flow path with equal cross dimension, and in interchangeable embodiment, first pipeline provides flow path, and the littler cross dimension of flow path cross dimension that provides than second pipeline is provided this flow path.This is convenient to improve the first ducted flow velocity, and therefore can shorten washing time.
Negative pressure in closure when first valve is opened descends, and first pipeline can be provided with second valve between the closure and first valve.When first valve was opened, described second valve preferably cut out.If the pump suction is enough strong, even consequently also can keep the pressure on the wound when first valve is opened, then second valve can not need to be provided with.
Second valve can manual operation or by the signal operation from first valve or pressure-detecting device or control unit, but preferably valve by the automatic opening/closing of ducted pressure.In a preferred embodiment of the invention, when the pressure in the closure was higher than ducted pressure, second valve was opened.The valve that is fit to this purpose can be a check valve, for example duck shape (duck) valve.
System can also comprise jar, describedly jar is used to receive liquid, and gas and liquid in the wound fluid are separated.Jar preferably is arranged to relevant with pump.Pump can comprise the driver element that is used to aspirate fluidic pump head (pump head) and is used for driving pump.Jar can be positioned at the front or the back of pump.Jar can comprise sorbent materials.
System can also comprise segregation apparatus, and described segregation apparatus is used for fluid is separated into gas and liquid.
First valve can be connected on first pipeline by second pipeline.
First pipeline can comprise second valve, and described second valve is positioned between the closure and first valve.
When first valve was opened, second valve can cut out, and perhaps second valve can be opened when the pressure in the closure is higher than ducted pressure.
Jar can be arranged in the system, and this jar can for example be positioned at the front or the back of pump.
In the third aspect, the invention provides a kind of method that pipe flushing is provided in wound therapy system, described system comprises:
-covering, described covering can be attached on the periphery of wound location, forming the closure that suction space and surrounding space are separated,
-the first pipeline, described first pipeline form at the inlet in the suction space and between the outlet of suction space outside flow path and
-pump, described pump is communicated with first pipeline fluid,
Described method comprises:
Provide pressure reduction between-swabbing pressure in suction space and the ambient pressure in the surrounding space,
-waited for for the 4th time period,
-open passage, be used for a certain amount of air is discharged into the near-end of flow path, with flushing pipe,
-waited for for the 5th time period,
-closing passage,
-wait for the 6th time period and
Pressure reduction between-measurement swabbing pressure and the ambient pressure.
The near-end of flow path is that end towards suction space, when promptly present dynasty's flow direction is seen in the beginning of flow path.
In fourth aspect, the invention provides a kind of in wound therapy system the method for control pump, described system comprises:
-covering, described covering can be attached on the periphery of wound location, to form the closure that suction space and surrounding space are separated;
-the first pipeline, described first pipeline form at the inlet in the suction space and between the outlet of suction space outside flow path and
-pump, described pump is communicated with first pipeline fluid,
Described method comprises:
-from many pressure measxurements, sample, each measure in the flow path, in the suction space or the pressure of measuring in the exit is all effective and
-time of implementing the flushing suction channel according to the sampling model selection.
Described method can comprise the step according to the model selection limiting pressure, under described limiting pressure pump is stopped or control in addition, and is too big to avoid swabbing pressure.
The sampling pattern can comprise many successive pressure measxurements, and it can for example represent pressure oscillation.These fluctuations can indicate pipeline to fill or part filled with fluid or solid matter, can determine flushing pipe thus.Therefore, this method can comprise sampling pattern and the correlated step of reference mode, and wash according to comparative result.In corresponding mode, pattern can be used for control pump, promptly when the pressure reduction between suction space and the surrounding space raises, can reduce the ability of pump.
Aspect the 5th, the invention provides a kind of control unit that is used for wound therapy system, described system comprises:
-covering, described covering can be attached on the periphery of wound location, forming the closure that suction space and surrounding space are separated,
-the first pipeline, described first pipeline form at the inlet in the suction space and between the outlet of suction space outside flow path and
-pump, described pump is communicated with first pipeline fluid,
Control unit comprises data processing equipment, described data processing equipment programmable, so that:
-from many pressure measxurements, sample, each measure in flow path, in the suction space or the pressure of measuring in the exit is all effective and
-time of implementing the flushing suction channel according to the sampling model selection.
Described system can be suitable for according to the model selection controlled pressure, and when swabbing pressure reaches pressure limit, utilizes described controlled pressure for example by underspeeding or making pump stop to come the operation of control pump.
Aspect the 6th, the invention provides a kind of in suction system the method for gaging pressure, described suction system is used for getting rid of the fluid of wound, this method comprises:
-provide a covering, described covering can be attached on the periphery of wound, with the closed-suction space that forms and surrounding space separates,
-first pipeline is provided, described first pipeline is forming flow path at the inlet in the suction space and between the outlet of suction space outside,
-by via the suction of first pipeline, provide between swabbing pressure in suction space and the ambient pressure in the surrounding space pressure reduction and
-flow through at least by in very first time section, providing that the fluid stream of the major part of pipeline washes first pipeline,
Wherein, pressure is for example measured in a time period after flushing pipe, and the described time period is in the time period scope of flushing first pipeline or than this time period weak point.
Aspect the 7th, the invention provides and a kind ofly avoid the method for blocking at the suction channel that is used for suction system, described suction system is used for getting rid of the fluid of wound, and this method comprises:
-provide a covering, described covering can be attached on the periphery of wound, with the closed-suction space that forms and surrounding space separates,
-first pipeline is provided, described first pipeline is forming flow path at the inlet in the suction space and between the outlet of suction space outside,
-by via the suction of first pipeline, provide between swabbing pressure in suction space and the ambient pressure in the surrounding space pressure reduction and
-flow through at least by in very first time section, providing that the fluid stream of the major part of pipeline washes first pipeline.
In the 3rd, the 4th, the 5th, the 6th and the 7th aspect of the present invention any one can combine with the disclosed characteristics in first and second aspects of the present invention.
Description of drawings
Embodiments of the invention are open in detail with reference to accompanying drawing, wherein:
Fig. 1 illustrates one embodiment of the present of invention,
Fig. 2 illustrate an alternative embodiment of the invention and
Fig. 3 illustrates the detail drawing of a part of the present invention.
The specific embodiment
Below, illustrate in greater detail the preferred embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 illustrates the sketch map of system.Wound covering thing 1 is with the wound sealing, to form closure.The fluid and the liquid wound transudate that are air form are carried by being aspirated through first pipeline 2 by the negative pressure of pump head 4 and driver element 13 generations.First pipeline 2 can comprise several sections and can increase different accessories, for example is used for being connected to separably pump and/or covering.
First pipeline 23 is connected on the pump head 4 by entering the mouth.Air and transudate are transported to jar 6 via pump head 4 with by exporting 5.This jar can be that any kind is suitable for collecting and/or the cavity of separation of air and liquid, such as flexible pouch.
In jar 6, air and liquid are divided into biphase.Air will be through outlet 8, and liquid will be retained in jars 6.Jar can be equipped with absorber component.
The outlet 8 of jar can be provided with filter 7, is used for getting rid of the undesirable component of eluting gas.
One end of second pipeline 9 is connected near the closure first pipeline, and the other end 10 is connected on first valve 11 and the filter 12 by entering the mouth.
Inaccuracy to negative pressure in the system exerts an influence liquid string in pipeline/drainage tube owing to bring out pressure oscillation on wound.These fluctuation the application of the invention systems reduce to minimum.
Filter 7 can be the combination of any kind of filter, film or filter and film.Filter can be hydrophobic or thin fat or can retain bacteria.
Some parameter, for example time, pressure, power consumption and other may be conclusive for opening valve 11.
Fig. 2 illustrates an alternative embodiment of the invention.Wound is by 21 sealings of wound covering thing, and air and transudate are carried via first pipeline 22 by the negative pressure that is produced by pump head 26 and driver element 28.First pipeline 22 can comprise several sections, and can add different accessories.
To collect in jars 24 from the transudate of first pipeline 22, first pipeline 22 23 is connected on jars 24 by entering the mouth.
In jar 24, gas and liquid are divided into biphase.Jars 24 absorber component of can packing into.This jar can be that any kind is suitable for collecting/cavity of separation of air and liquid.
Gas in the jar 24 is transported in the disposable pump head 26 via outlet 25 by negative pressure.
Filter 27 can place disposable pump head 26 the back, jars 24 and disposable pump head 26 between or in the front and back of disposable pump head 26.
Disposable pump head 26 is connected on the driver element 28.
One end of second pipeline 29 is connected on the sealing or the wound 21 of semitight, and the other end 30 is connected on first valve 31 and the filter 32 by entering the mouth.
Sometimes, first valve 31 will be opened, and air will flow through filter 32, second pipeline 29, first pipeline 22 and pass through the remainder of system in addition, thereby first pipeline 22 without any the liquid string is provided.
First pipeline 22, jar 24, disposable pump head 26, second pipeline 29, first valve 31, filter 32 and filter 27 can be unit separately, and some or all are perhaps arranged in the middle of them can be integral unit.
Fig. 3 illustrates the detail drawing of two valves.First pipeline 2 is connected to closure 34 on the pump (not shown), and second pipeline 9 is connected to first valve 11 near the closure 34 first pipeline.Second valve 33 is arranged on first pipeline, between the connecting portion and closure 34 of second pipeline 9.
Claims (41)
1. one kind is used for removing fluidic method from the surface, and described method comprises:
-provide covering, described covering can be attached on the surperficial periphery, with the closed-suction space that forms and surrounding space separates,
-first pipeline is provided, described first pipeline forms flow path at the inlet in suction space and between the outlet of suction space outside,
-by the suction by first pipeline, provide between swabbing pressure in suction space and the ambient pressure in the surrounding space pressure reduction and
-wash first pipeline by the flush fluid stream that the major part at least that flows through pipeline is provided in very first time section.
2. in accordance with the method for claim 1, wherein, fluid stream is set between inlet and the outlet.
3. in accordance with the method for claim 1, wherein, pipeline is rinsed by a certain amount of flush fluid is discharged in the suction space or in first pipeline.
4. wherein, flushing out air is discharged near in first pipeline that enters the mouth in accordance with the method for claim 3.
5. according to each described method among the claim 3-4, wherein, flushing out air provides via first valve, and described first valve is arranged to control fluid by surrounding space with the release channel between the suction space and is communicated with.
6. each described method in requiring according to aforesaid right, wherein, pressure reduction provides by using suction pump, and described suction pump started in second time period, overlapping very first time section of this second time period.
7. each described method in requiring according to aforesaid right, this method also comprises in the measurement suction space, the pressure in the flow path or exit.
8. each described method in requiring according to aforesaid right, wherein, pressure was measured in the 3rd time period.
9. according to claim 6 and 8 described methods, wherein, overlapping second time period of the 3rd time period.
10. according to claim 6 and 8 described methods, wherein, overlapping very first time section of the 3rd time period.
11., wherein, when predetermined pressure or pressure pattern are determined, wash first pipeline according to each described method among the claim 8-10.
12. according to each described method among the claim 8-11, wherein, gaging pressure in the time period after flushing pipe stops.
13. in accordance with the method for claim 12, wherein, pressure reduction provides according to pressure, and described pressure is measured in the time period between flushing first pipeline continuously at twice.
14. each described method in requiring according to aforesaid right, wherein, very first time section has time span, and described time span is enough to form through flowing of whole first duct length basically.
15. according to each described method in the aforesaid right requirement, this method is applicable to Wound healing and bone regeneration.
16. according to each described method in the aforesaid right requirement, wherein, flushing and suction co-operating enter in the suction space to prevent flush fluid.
17. according to each described method in the aforesaid right requirement, wherein, flushing and suction co-operating are to prevent that pressure equates in suction space and surrounding space.
18. one kind is used for removing wound and removes fluidic suction system, described system comprises:
-covering, described covering can be attached on the periphery of wound, with the closed-suction space that forms and surrounding space separates,
-the first pipeline, described first pipeline forms flow path at the inlet in suction space and between the outlet of suction space outside,
-pump, described pump is communicated with first pipeline fluid, and provide between swabbing pressure that can be in suction space and the ambient pressure in the surrounding space pressure reduction and
-flusher, described flusher comprises first valve, this first valve provides controllable fluid to be communicated with between the source of described flow path and flush fluid, to be used for forming through at least a portion pipeline the intermittent flow of air.
19. according to the described system of claim 18, wherein, described first valve provides with the may command fluid of surrounding space and is communicated with.
20. according to each described system among the claim 18-19, wherein, flusher comprises first valve, described first valve provides controllable fluid to be communicated with between suction space and surrounding space.
21. according to each described system among the claim 18-20, this system comprises control device, described control device is operated first valve, to provide air through the mobile washing time section of piping.
22. according to the described system of claim 21, wherein, control device comprises data processing equipment, described data processing equipment is programmed, so that:
-from many measurements, sample, each measure to pressure measured in the flow path, in the suction space or in the exit all effective and
-implement according to the model selection of sampling the time of flushing suction channel.
23. according to the described system of claim 22, wherein, control device also is suitable for according to the model selection controlled pressure, and utilizes controlled pressure to come the operation of control pump.
24. according to each described system among the claim 21-23, wherein, the washing time section has time span, this time span is enough to make air to pass through flow path at least basically.
25. according to each described system among the claim 18-24, this system comprises pressure-detecting device, described pressure-detecting device is arranged to respond pressure reduction signal is provided.
26. according to the described system of claim 25, wherein, flusher is suitable for providing air-flow in response to predetermined pressure reduction.
27. according to each described system among the claim 18-26, wherein, flusher is suitable for providing air-flow when pump operation.
28. according to each described system among the claim 20-27, this system comprises second pipeline, described second pipeline is connected to first valve on first pipeline.
29. according to each described system among the claim 20-28, wherein, flusher comprises second valve, described second valve provides controllable fluid to be communicated with between suction space and first valve.
30. according to the described system of claim 29, wherein, flusher is suitable for cutting out second valve when first valve is opened.
31. according to each described system among the claim 29-30, wherein, flusher is suitable for opening second valve when swabbing pressure is higher than the first ducted pressure.
32. according to each described system among the claim 29-31, wherein, second valve is a check valve.
33. according to each described system among the claim 18-32, this system comprises and is used to collect fluidic jar that described jar on the position between suction space and the pump.
34. according to each described system among the claim 18-33, this system comprise be used to collect fluidic jar, pump suction space with jar between, thereby jar receive the fluid that passes through the pump pumping.
35. the method that pipe flushing is provided in wound therapy system, this system comprises:
-covering, described covering can be attached on the periphery of wound location, with the closed-suction space that forms and surrounding space separates,
-the first pipeline, described first pipeline form at the inlet in suction space and between the outlet of suction space outside flow path and
-pump, described pump is communicated with first pipeline fluid,
Described method comprises:
Provide pressure reduction between-swabbing pressure in suction space and the ambient pressure in the surrounding space,
-waited for for the 4th time period,
-open the passing through of near-end that is used for a certain amount of air is discharged into flow path, with flushing pipe,
-waited for for the 5th time period,
-closing passage,
-wait for the 6th time period and
Pressure reduction between-measurement swabbing pressure and the ambient pressure.
36. the method for a control pump in wound therapy system, this system comprises:
-covering, described covering can be attached on the periphery of wound location, with the closed-suction space that forms and surrounding space separates,
-the first pipeline, described first pipeline form at the inlet in the suction space and between the outlet of suction space outside flow path and
-pump, described pump is communicated with first pipeline fluid,
Described method comprises:
-from many measurements, sample, each measure to all effective in the flow path, in the suction space or at the measured pressure of outlet and
-time of implementing the flushing suction channel according to the sampling model selection.
37. according to the described method of claim 36, this method comprises also that according to the model selection limiting pressure pump is stopped or aspirates and is reduced under described limiting pressure.
38. a control unit that is used for wound therapy system, described system comprises:
-covering, described covering can be attached on the periphery of wound location, with the closed-suction space that forms and surrounding space separates,
-the first pipeline, described first pipeline form at the inlet in the suction space and between the outlet of suction space outside flow path and
-pump, described pump is communicated with first pipeline fluid,
Described control unit comprises data processing equipment, and described data processing equipment is programmed, so that:
-from many measurements, sample, each measure in the flow path, in the suction space or the pressure of measuring in the exit is all effective and
-time of implementing the flushing suction channel according to the sampling model selection.
39. according to the described control unit of claim 38, this control unit also is suitable for according to the model selection limiting pressure, pump is stopped or aspirates and is reduced under described limiting pressure.
40. the method for a gaging pressure in suction system, described suction system is used for removing the fluid of wound, and this method comprises:
-provide covering, described covering can be attached on the periphery of wound, with the closed-suction space that forms and surrounding space separates,
-first pipeline is provided, described first pipeline is forming flow path at the inlet in the suction space and between the outlet of suction space outside,
-by via the suction of first pipeline, provide between swabbing pressure in suction space and the ambient pressure in the surrounding space pressure reduction and
-flow through at least by in very first time section, providing that the fluid stream of the major part of pipeline washes first pipeline,
Wherein, pressure is measured after flushing pipe.
41. avoid the method for blocking at the suction channel that is used for suction system for one kind, described suction system is used for removing fluid from wound, this method comprises:
-provide covering, described covering can be attached on the periphery of wound, with the closed-suction space that forms and surrounding space separates,
-first pipeline is provided, described first pipeline forms flow path at the inlet in suction space and between the outlet of suction space outside,
-by via the suction of first pipeline, provide between swabbing pressure in suction space and the ambient pressure in the surrounding space pressure reduction and
-wash first pipeline by in very first time section, providing by the fluid stream of the major part of pipeline at least.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA200600147 | 2006-02-02 | ||
| DKPA200600147 | 2006-02-02 | ||
| DKPA200600148 | 2006-02-02 | ||
| DKPA200600149 | 2006-02-02 | ||
| DKPA200601010 | 2006-07-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101378794A true CN101378794A (en) | 2009-03-04 |
Family
ID=40421930
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007800043170A Pending CN101378793A (en) | 2006-02-02 | 2007-02-01 | Pump and system for treatment of a wound |
| CNA200780004326XA Pending CN101378794A (en) | 2006-02-02 | 2007-02-01 | A suction method and a wound suction system |
| CNA2007800043363A Pending CN101378803A (en) | 2006-02-02 | 2007-02-01 | A suction system |
| CNA2007800043344A Pending CN101378795A (en) | 2006-02-02 | 2007-02-01 | Device, pump and system for stimulating the healing of a wound |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007800043170A Pending CN101378793A (en) | 2006-02-02 | 2007-02-01 | Pump and system for treatment of a wound |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007800043363A Pending CN101378803A (en) | 2006-02-02 | 2007-02-01 | A suction system |
| CNA2007800043344A Pending CN101378795A (en) | 2006-02-02 | 2007-02-01 | Device, pump and system for stimulating the healing of a wound |
Country Status (1)
| Country | Link |
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| CN (4) | CN101378793A (en) |
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| CN104203301A (en) * | 2012-01-10 | 2014-12-10 | 凯希特许有限公司 | Systems and methods for delivering fluid to a wound therapy dressing |
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- 2007-02-01 CN CNA2007800043363A patent/CN101378803A/en active Pending
- 2007-02-01 CN CNA2007800043344A patent/CN101378795A/en active Pending
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Also Published As
| Publication number | Publication date |
|---|---|
| CN101378795A (en) | 2009-03-04 |
| CN101378803A (en) | 2009-03-04 |
| CN101378793A (en) | 2009-03-04 |
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