CN101378803A - A suction system - Google Patents
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- CN101378803A CN101378803A CNA2007800043363A CN200780004336A CN101378803A CN 101378803 A CN101378803 A CN 101378803A CN A2007800043363 A CNA2007800043363 A CN A2007800043363A CN 200780004336 A CN200780004336 A CN 200780004336A CN 101378803 A CN101378803 A CN 101378803A
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Abstract
A pumping system which is used for removing exudation from wound comprises a wound covering object and a pump. The wound covering object can be adhered surrounding the wound of living body to form a closed area. The pump is communicated with the fluid of closed area to provide a pressure difference between the negative pressure in the closed area and the atmosphere of the surrounding space. An offsetable element is configured to a state that the pressure can lead to the offset of the offsetable component relative to the closed area. A pressure sensing device is arranged outside the closed area and is configured for providing signal responding to the pressure or the offset of the offsetable component. The offsetable component forms a barrier which is not penetrated with air basically between the sensor and the closed area.
Description
Technical field
Therefore the present invention relates to a kind of being used for removes exudate and is used to promote the suction system of wound healing from wound.Described system comprises: the wound covering thing, and its wound circumference that can be attached to live body is to form the enclosed area; Pump, it is communicated with described enclosed area fluid with the pressure reduction between the air pressure that negative pressure in the described enclosed area and surrounding space are provided; But offset component, it is suitable for moving or being offset based on described pressure reduction; And pressure-sensing device, but it is positioned at the outside of described enclosed area and is suitable for providing signal based on the skew of pressure or described offset component.
Background technology
The fluid conduction that has been found that wound promotes tissue growth and impels healing time to reduce thus.This processing has been used for many years and has been developed and has been used to wound that the various therapy equipments of suction are provided.
US6,648,862 have described the vacuum desiccator that a kind of use comprises the storage tank of trapping agent, and WO97/18007 discloses a kind of storage tank that is arranged in the shell and portable wound blood processor of pump of having, described shell has promoted portable use, for example can dress on braces or by belt.
In known devices, the wound covering thing makes around wound formation enclosed area with the skin that sealing means is fixed to live body.Covering is connected to pump, applies suction then.Suction forces exudate from the enclosed area to the accepter.
In order to control the operation of vacuum system, may wish the pressure in the measuring system, so that be provided for the control signal of the operation of pump.
At the multi-user's pumping system that is used for handling wound, the cross infection between the user will be avoided.
Summary of the invention
A purpose of the preferred embodiments of the present invention is to improve existing systems, and a kind of cross infection and infectious enhancement ground safety that prevents processed live body particularly is provided.Another purpose of the preferred embodiments of the present invention provides a kind of system, wherein pressure is detected in one way, and described mode makes for example contaminated risk minimization of pressure transducer of the risk of cross infection between the patient and durable (promptly reusable) hardware.
In first aspect, the invention provides a kind of suction system that is used for removing exudate from wound, described suction system comprises:
-wound covering thing, it can be attached to the wound circumference of live body, forms the enclosed area thus;
-pump, it is communicated with described enclosed area fluid with the pressure reduction between the air pressure that negative pressure in the described enclosed area and surrounding space are provided;
But-offset component, but it is arranged such that with respect to described enclosed area described pressure reduction can cause the skew of described offset component; With
-pressure-sensing device, but it is positioned at the outside of described enclosed area and is arranged to the skew of response pressure or described offset component and signal is provided;
But wherein said offset component forms the barrier of airtight substantially body between described pick off and described enclosed area.
In second aspect, the invention provides a kind of method that is used for removing exudate from wound, said method comprising the steps of:
-by the wound covering thing is attached to wound around form enclosed area around wound;
Provide pressure reduction between the-negative pressure in described enclosed area and the air pressure of surrounding space;
-arrange that with respect to described enclosed area but but offset component makes described pressure reduction cause moving of described offset component or skew; With
But moving or skew and pressure signal is provided of the described offset component of-response;
But wherein said offset component is arranged to form bacterial barriers between sensing apparatus and described enclosed area, but and wherein said offset component can be the part of sensing apparatus.Especially, described method can comprise based on the pressure signal control pump, so that the expection negative pressure to be provided in the wound enclosed area.
Therefore, the invention provides a kind of system, but wherein offset component separates the exudate in pressure-sensing device and the enclosed area.
Because but offset component not only is offset and is convenient to gaging pressure thus but also makes pressure-sensing device and exudate separates, therefore reduced the risk of pollution driver element, and can be repeatedly used sensing apparatus and need not sterilize.Therefore, can reduce cost, increase safety simultaneously.Preferably, but offset component forms the barrier of antibacterial, virus, gas and liquid.
In a preferred embodiment of the invention, pump comprises at least one disposable unit and at least one durable (promptly reusable) parts, described disposable unit for example comprises the container that is used to collect from the liquid of wound pumping, and described durable components for example comprises the driver part that is used for pump.In such embodiments, pressure-sensing device preferably is arranged in the durable components, and offset component is arranged in the disposable unit, reduces the risk of cost and pollution thus.
Generally speaking, but wound covering thing offset component and other parts that may contaminated system during handling can be disposable, and it is for example short service time with respect to the reusable driver element of actuated pump that this represents that described parts are designed to.In case place the wound covering thing, can on wound location, form basic gas tight seal to prevent vacuum leak.On wound, place covering such sealing can be provided, make covering be attached to healthy skin, keep gas tight seal from one's body at wound simultaneously around wound location.In this article, " airtight " and " airtight substantially " should be understood to expression and can keep negative pressure in the wound in the operating period of pump at least.
But offset component should prevent usually that preferably air-locked substantially and thus antibacterial and exudate from spreading by film.But offset component can be by the material manufacture of remarkable air proof and other gas.Owing to there is not polymer airtight fully after the long period, therefore term " significantly not saturating " is illustrated in carries out with offset component that infiltration is insignificant during the single treatment on measuring when used herein.But offset component especially can not saturating substantially antibacterial.Antibacterial typically has the diameter of about 0.2 μ m.Therefore, barrier can be substantially not thoroughly greater than the granule of 0.02 μ m so that about 10 times safety to be provided.But offset component also can be saturating viral, and therefore serve as the barrier between disposable environment for use and the surrounding.Although small size (20-300nm) virus can not be passed for example not saturating offset component of solid material.An example of material is the nitrile rubber that is used for the laboratory glove.But offset component can be by the flexible polymer material manufacturing.Can select plastic material for example PE, PP and PVC, reason is that these materials are normally cheap, and these materials are suitable for injection moulding or blowing.But offset component also can be by the material manufacture that is selected from the group that comprises following material: thermoplastic elastomer (TPU, SIS, SBS and SEBS), thermmohardening or vulcanized elastomer for example synthetic and natural rubber, latex, glass, metal and pottery.Under any circumstance, described element should be designed in above-mentioned scope, i.e. the pressure reduction of the scope of 10-600mmHg even 10-200mmHg skew down.
But also be applicable to the embodiment of pumping element (being pump head) similarly about the current consideration of the embodiment of offset component and requirement thereof, for example be used for the pipe of peristaltic pump, be used for the barrier film of membrane pump or be used for the piston of piston pump.
Generally speaking, the principle of skew can based on:
I) elastic expansion of film, or
But the ii) variation of the shape of offset component, that is, for example bending by material, for example by elastic bending, or
But iii) offset component element moving with respect to another element.
About i), if skew is based on elastic expansion, but offset component can comprise the film or the barrier film of relative thin, for example air bag or barrier film, therefore it is stretched on bellows, perhaps is stretched on the opening of pipe, perhaps is stretched on two or more interval disks and forms flexible wall in the cylinder, or the like, but offset component is communicated with the enclosed area fluid.
About ii), if skew is based on the bending of material, but offset component can comprise the corrugated tube shape element, this corrugated tube shape element can expand and contraction along a direction based on pressure reduction, perhaps but offset component can comprise the Bourbon pipe, promptly changes the pipe of its shape according to internal pressure.
About iii), if skew based on element moving relative to each other, described element can comprise the fluid column in " rolling diaphragm " or piston or cylinder arrangement or the pipe.
Irrelevant with the principle of skew, as to be offset under the certain pressure reduction number of degrees, resistance that can offset component opposing skew can be by the character of selected material, but the size of offset component or provide structure control by the independently power of influence skew.As such example of structure, spring, for example helical coil springs can be oriented to the influence skew.
But can be with two kinds of different modes utilization offset components:
A) as passive device, the barrier that it does not have the skew of any remarkable resistance ground and only serves as the airtight body between enclosed area and the pressure-sensing device, or
B) as active member, it is detected that the pressure balance in its skew and the wound enclosed area and its pass through sensing apparatus, but therefore offset component is the part of pressure-sensing device.
About a), but offset component is connected to pressure transducer in a side relative with the enclosed area by measuring channel or chamber.Because but offset component does not move with having remarkable resistance or almost unstressed the skew, but it will occupy suitable position and provide uniform pressure with both sides at offset component, make and can pass through accurately gaging pressure of barrier with the pressure transducer of any known type.
Generally speaking, pick off can comprise the pick off of any kind of the pressure reduction that can measure described type.For example, pick off can comprise and is selected from following group element:
-strain gauge element,
-pressure drag component,
-piezoelectric element,
-Bourbon pipe,
-micro electronic mechanical system (MEMS or solid state MEMS),
-vibrating elements (silicon resonance),
-variable-capacitance element and
-little Pirani ga(u)ge.
About b), but that pressure-sensing device can be positioned at the enclosed area is outside and be suitable for providing signal based on the skew of offset component.Generally speaking, sensing apparatus can belong to any kind, and it can measurement size, the moving of distance, skew, power.
But the sensing principle of using can be based on the contact between sensing apparatus and the offset component, i.e. contact measurement, and perhaps it can not rely on direct contact, i.e. noncontacting measurement.
The sensing apparatus that is used for contact sensing can comprise and is selected from following group element:
-pressure drag component,
-piezoelectric element,
-vibrating elements (silicon resonance),
-variable-capacitance element and
The mechanical measurement of-skew, for example by using:
-strain gauge element,
-linear movement position sensor,
-potentiometer,
-force transducer, or
-Li sensitive resistance element (FSR).
Noncontacting measurement can based on:
-ultrasonic reflection,
-reflected light (IR-LED/ laser diode),
-triangulation (IR-LED/ laser diode and PSD-position sensing apparatus),
-differential variable reluctance transducer (cored in DVRT or the LVDT-coil).
Under any circumstance, signal is the signal of telecommunication preferably, and described signal can be used for monitoring that by reading instument or display the negative pressure of enclosed area and/or control pump are to provide the expection negative pressure.
The cost of pick off or sensing apparatus is usually compared higher with the cost of disposable unit.Disposable sensor further comprises electronic unit, and described electronic unit needs power supply and is used to transfer signals to the device of durable (reusable) display or control unit.Therefore, but sensing apparatus is separated with offset component, but and therefore allow offset component after each the use, to be disposed.Therefore, but offset component preferably is detachably connected to pressure transducer in not leakage mode, perhaps it can be arranged to engage the contact sensing device or engage in the tram with respect to the noncontacting measurement device, for example pass through the buckle connected system, but this connected system is convenient to the correct location of offset component with respect to sensing apparatus in an easy manner.In order to ensure correct measurement, connected system can be arranged to prevent to use pump, unless but offset component is correct with respect to the position of pick off.
In one embodiment, but offset component forms the wall part of wound covering thing, but perhaps offset component forms the part of the element that is communicated with the enclosed area fluid, but for example offset component formation from the part of the pipe of enclosed area extension.
But offset component can form the part of wound covering thing, but perhaps offset component can form the wall part of the pressure signal pipeline that is communicated with the enclosed area fluid.The pressure signal pipeline allows pick off to be oriented to away from wound, and pick off can be included in the driver element that is used for actuated pump thus.
The pressure signal pipeline can be formed or be embedded in the medical tube by medical tube.In one embodiment, described pipe forms several chambeies, and one of them chamber forms the pressure signal pipeline, and another chamber forms drainage pipe.Select as the replacement of using multi-lumen tube, pressure signal pipeline and drainage pipe can be formed by single medical tube, and the operability that described pipe can be engaged to be used to strengthen system strengthens being connected of wound covering thing, pump and pressure transducer with being used to.For the further connection of reinforcing member, multi-lumen tube or single lumen catheter can comprise coupling arrangement, connect in the action at one, and described coupling arrangement is connected to pump drainage pipe and the pressure signal pipeline is connected to pick off.Similarly, can obtain the disconnection of two pipes by single disconnection action.
Opposite with drainage pipe, because signal pipe line guide pressure signal rather than flow only, liquid substance for example exudate is not inclined to and enters the pressure signal pipeline.Yet in order to increase the reliability of system, signal pipe line can form the inlet that enters the enclosed area, and this inlet comprises the isolating construction that prevents liquid substance and exudate entering signal pipeline.Isolating construction for example can be the high flexible barrier, but for example above-mentioned offset component or second " unstressed " but offset component.
But in order to provide fast and accurate signal transmission and, preferably provide to have relatively little volume, preferably less than the pressure signal pipeline of the volume of drainage pipe for the skew that limits offset component or mobile.Therefore, signal pipe line can preferably have the cross-sectional area littler than drainage pipe.
But but offset component is the unstressed substantially biasing element that is connected to measuring channel in one embodiment, and sensing apparatus is a pressure transducer.
But offset component comprises that but unstressed substantially biasing element and power provide spring structure in another embodiment, but it can be the integral part or the independent component of offset component, and sensing apparatus is contactless range sensor.
Method according to a second aspect of the invention may further include after replacing disposable offset component the process of calibrating signal when startup.
In system according to the present invention, pump can comprise pump head, and system may further include segregation apparatus, and described segregation apparatus comprises fluid intake and gas outlet, and pump head is connected to the gas outlet of segregation apparatus.Pump head is removably attached to driver element, makes that in use the fluid intake of segregation apparatus for example is connected to the wound covering thing by pipeline.
Segregation apparatus will be separated from the gas from the fluid of wound pumping before the material of pumping enters pump.Therefore, prevented from least substantially to enter pump from the fluid of wound pumping and possible solid matter, the pump that weares and teares thus, and can avoid the risk of block pumps.And the pump of pumping liquid and solid matter can be not simpler, owing to the less small driving force that needs of the viscous drag in the pump, and than the low cost of manufacture of the pump of pumping liquid and/or solid matter.Described pump can comprise peristaltic pump, the continuous pucker ﹠ bloat that wherein passes through the flow cross section of pipe produces negative pressure, pucker ﹠ bloat is for example realized by the rotatable element that has one or more ledges, described ledge acts on the outer surface of described pipe, causes the flow cross section pucker ﹠ bloat continuously in the described pipe thus.Alternatively, described pump can comprise at least one reciprocal element, for example piston or barrier film, and this reciprocal element is arranged to cause the continuous pucker ﹠ bloat in pumping chamber, and preferably check valve separately is arranged on the entrance and exit in pumping chamber.
When used herein, the element that term " pumping element " and " pump head " expression is such flows through described element at the material and/or the gas of pump period pumping.Therefore, term " pumping element " and " pump head " do not comprise the driving element that is used to drive pumping element or pump head in this article usually.Any pump structure or the pump of pump action carried out in term " pump " and " being used to apply means for applying negative " expression, comprises the driving element that is used to drive pumping element or pump head.
In a preferred embodiment, be used to apply means for applying negative and comprise two detachable attached critical piece, pump head and driver elements.Pump head for example can comprise above-mentioned piston or barrier film, and driver element can comprise and causes pump head to move back and forth or cause those required elements of pump action.Preferably, the sealing member of impenetrable liquid and/or airtight body is arranged between pump head and the driver element, thereby prevents that gas and/or liquid from entering driver element.For example, the pump head that for example comprises piston or film can be sealed on the next door along periphery.Can avoid the pollution of driver element thus, perhaps can reduce the contaminated risk of driver element.Therefore, only being used between the different patients at device, pump head needs sterilization.Alternatively, pump head can be incorporated in the disposable unit.When pump head was removably attached to driver element, pump head can easily be sterilized and/or change.
Described pump can produce the pressure reduction that is enough to detach from wound liquid, for example is pressed in negative pressure in the scope of 10-600mmHg with respect to ambient atmosphere.
The wound covering thing can be inaccessible or the semi-closure plug, and for example vapour is still waterproof thoroughly.Be semipermeable by provide the semi permeability cover foil to make the wound covering thing for the wound covering thing in one embodiment of the invention.Therefore, the term semi permeability is represented waterproof vapour.In one embodiment, the wound covering thing is held in place by means of part surface or whole lip-deep binding agent at the wound covering thing.In another embodiment of the present invention, the wound covering thing is held in place by the negative pressure that is applied by system.
Be provided for applying means for applying negative as two detachable blocks and have several advantages.Pump head typically comprises main mechanical part, and driver element also comprises more sensitive element for example motor, electronic circuit and possible control unit.In pump head, produce negative pressure even vacuum.Because parts are detachable each other, and, therefore can reuse driver element and do not have any risk of virus or antibacterial being transferred to the possible user of the next one of system because driver element isolated contact with potential air or the exudate that carries virus or antibacterial.Therefore, system according to the present invention provides cost advantage, and reason is the critical piece of system, and the driver element that promptly is used to apply means for applying negative can be repeated to use.Because driver element is typically expensive component because of its electronic unit, this cost advantage is sizable with respect to the totle drilling cost of system.
Pump head and driver element are removably attached to each other.Can provide connection between pump head and the driver element with several different modes.The technical staff provides understanding the suitable method of such connection.
In a preferred embodiment of the invention, pump head is disposable.Detachable pump head is disposable and can be replaced, and driver element can be repeated to use, and reason is that driver element does not contact with exudate or the potential air that carries virus or antibacterial.Because pump head mainly comprises machinery and simple components, might be with relatively cheap material manufacture pump head, this has reduced the cost of pump head.
Pump head for example can be incorporated into and is used for collecting fluidic storage tank or container from wound or into treatment sites.Container for example can comprise inlet, and this inlet is connected to the pipeline that the flow channel of going to into treatment sites is provided.In addition, container can provide outlet, and this outlet is connected to the inlet of pump.In the device of a first aspect of the present invention and in the system of a second aspect of the present invention, delivery side of pump preferably is connected to exhaust port, and the gas of pumping can be pumped into ambient atmosphere by described exhaust port.In the pump of a third aspect of the present invention and in the system of a fourth aspect of the present invention, if liquid is separated from the gas in the upstream of pump, delivery side of pump can be connected to exhaust port, if perhaps liquid is not separated from the gas in the upstream of pump, can be connected to the container that is used to collect liquid.In this case, exhaust port preferably is arranged on the downstream of pump, for example is arranged in the collection container.
Here, term " upstream " and " downstream " are used to represent the position with respect to flow direction.Therefore, if primary importance or element are said to be in the upstream of the second position or element, this express liquid and/or gas flow arrived primary importance or element before it arrives the second position or element.Similarly, if primary importance or element are said to be in the downstream of the second position or element, this express liquid and/or gas flow arrived the second position or element before it arrives primary importance or element.
Collection container can be connected with the driver element of the driver part that holds pump or combination.Collection container is disposable elements preferably, and it is attached to driver element releasedly.
As mentioned above, container can be set to the integral part of segregation apparatus, perhaps it can be set to with the separate unit of segregation apparatus assembling.Container can be provided for collecting and holding the exudate of collecting from wound.Container can be with several different size settings to satisfy different users's different needs, and for example small volume container is used to increase activeness and comfortableness, and bulk container is used for a large amount of exudates and/or will be used by bedfast user.What those skilled in the art will appreciate that is that container can be with several form settings.It can be set to the container of box-like relative stiffness, and perhaps it can be set to the flat container of relative thin material, thereby makes the container can be crooked or folding so that allow and follow moving of movable user.
In one embodiment of the invention, segregation apparatus comprises the elongated separating component that has fluid intake, fluid issuing and gas outlet.
In another embodiment of the present invention, segregation apparatus is the integral part of pipeline.
One or more filters preferably are arranged in the exhaust port or its upstream.Described one or more filter can be arranged on before the pump head, promptly collapses the upstream of head and/or the outlet of pump head.For example, abnormal smells from the patient (being deodorization) filter and/or biofilter can be set.Any other or the alternative filter that comprise abnormal smells from the patient and/or biofilter can be set, for example one or more active carbons (carbon) filter.Filter can be hydrophobic and/or thin fat.Filter is placed on before the pump head in one embodiment.Filter can be placed near the gas outlet of segregation apparatus or to prevent that the liquid or solid granule from entering pump head.Filter is a biofilter in one embodiment, and it is hydrophobic and preferably also is to dredge fat.Therefore, aqueous and oil-based liquid will form globule on the surface of filter.Having enough air communication to cross filter between the normal operating period makes little across the pressure drop of filter.
Be releasably attached among the embodiment of driver part of pump at pump head (being pumping element), (one or more) filter can be arranged on the downstream of pump head, and reason is that pump head can easily be changed or temporarily be removed with new pump head to be used for cleaning or sterilization.Therefore, suppose that pump head is sealed towards the driver part of pump, pump head may deliberately be polluted, even and under the out of order situation of (one or more) filter, the driver part of pump can be not dangerous yet.
Can be included in container in the segregation apparatus and can comprise that at least one is used for fluid and gas and enters the inlet of container and at least one and be used for gas and leave container and enter the outlet that is used to apply means for applying negative.In this embodiment, described entrance and exit can be arranged such that liquid is separated from the gas in the upstream of pump with respect to container and pump.The gas outlet that the gas of permission by the pump pumping leaves should be included in the pump or be connected to pump.
Container can comprise the absorber element that for example is used to absorb from the liquid of wound pumping.Absorber element for example can comprise gellant, desiccant, or so-called super absorbing particles (SAP).
Pump head can be disposable or reusable, promptly uses for a plurality of patients.For example, pump head and segregation apparatus can comprise or be attached in the unit.Therefore, comprise the storage tank of the liquid that is used for collecting pumping or the embodiment of container at segregation apparatus, pump is removed for example to be used to empty or change pump from the driver element that has container.Because dismountable and disposable pump head combines with segregation apparatus to form an integral body, after using system of the present invention, pump head and segregation apparatus can be dropped simultaneously.This is favourable, and reason is that it makes the operation of system simpler.Simultaneously, it has reduced after using system to be used to mistakenly to apply at different patients or user the risk of the pump head of means for applying negative on one's body.
If pumping element or pump head are reusable, it preferably can be sterilized.For example, pump head can carry out disinfection by radiation.In another embodiment, pump head can carry out disinfection by autoclave.In another embodiment, pump head can carry out disinfection by steam.In one embodiment, pump head can carry out disinfection by means of oxirane (ETO sterilization).In another embodiment, pump head can carry out disinfection by flushing.Pump head and driver element can be repeated to use.By two removably attached parts are set, might make and separate from the pump head that may carry virus or antibacterial with the driver element of virus or antibacterial contact.After driver element dismounting pump head, it can suitably be cleaned to remove any possible residue of virus or antibacterial.In a preferred embodiment, pump head mainly comprises mechanical part and non-sophisticated electronics.Therefore, it can not damage the functional of pump head inside and outside being cleaned effectively, and therefore this make it reusable.
Pump head can be permanently attached in the container, promptly is included in wherein non-dismountablely, and perhaps it can removably be attached in the container.
Driver element can comprise motor.Motor can be connected to conventional attaching plug, and perhaps it can be connected to set of cells, and perhaps it can be connected to the combination of attaching plug and set of cells.Set of cells will be best when system is used for processing activity user.
The control unit of device for example can comprise the device that is used to control motor.For example, can in segregation apparatus, the wound covering thing be connected in the pipeline of segregation apparatus, or the definite pressure in what its suitable position in office is determined the operation of motor by control unit for example based in the wound.Motor can be operated off and on to cause pump pumping off and on, and perhaps it can operation continuously under variable velocity.Control unit is the integral part of driver element preferably.
Described container can have at least one and be used for fluid and gas and enter the inlet of container and at least one and be used for gas and leave the outlet that container enters pumping element.Described entrance and exit can be arranged such that liquid is separated from the gas in the upstream of pumping element with respect to container and pumping element, and pump may further include the gas of permission by the pumping element pumping from gas outlet that described pump leaves.
Described container can alternatively have at least one and be used for fluid and gas and enter that the inlet of container and at least one are for gases and liquids leaves the outlet that container enters pumping element.The outlet of pumping element can be connected to container, makes that the liquid by the pumping element pumping is transported in the container, and described pump may further include the gas of permission by the pumping element pumping from gas outlet that described pump leaves.
Can be provided for preventing that liquid in the container is in the structure that on the pressure side enters pumping element of pumping element.Such structure comprises the mechanical barrier device, for example one or more siphons, valve or other unidirectional layout.
Can be provided for allowing gas to escape to the air exit of ambient atmosphere, air exit is provided with filter.
In system of the present invention, the wound covering thing can comprise the semi permeability cover foil.For example, cover foil can impenetrable liquid in case be penetrated into the outside of cover foil from wound, but vapour thoroughly.
In the wound covering thing, can be provided with filter net device, for example foam of polymers, for example open celled polymeric foam.Suitable filter net device is disclosed in EP0 620 720, and this patent is incorporated in this as a reference.Alternatively, other flexible structure that allows to carry exudate can be set.
As mentioned above, pressure sensing element can be provided for the stress level and the control unit that is used for described force value is delivered to described device in the detection system.Pressure sensing element can be arranged and be used to detect in the wound covering thing or the stress level in the fluid collecting container of system.If arranging, pressure sensing element is used to detect in the wound covering thing, i.e. the stress level of wound, and the wound covering thing can be via the multi-cavity pipeline, and for example double-cavity pipe is connected to collecting chamber.The multi-cavity pipeline can comprise the second channel that is used for applying the first passage of negative pressure in the wound covering thing and is used for negative pressure is delivered to pressure sensing element.
Alternatively, pressure sensing element can be included in the wound covering thing or wound covering thing place, and pressure sensing element can be suitable for for example by wired or wireless connection electronic signal transmission being arrived the control unit of described device in this case.
The irrigation system that is used for the lavation wound can be employed.A kind of suitable irrigation system is disclosed in WO03/057070, and this patent is incorporated in this as a reference.
Embodiment according to system of the present invention can comprise first, second and the 3rd compartment, described pump comprises motor-driven pumping element and is used for driving force is offered the motor of described pumping element, described motor is included in described first compartment, and described pumping element is included in second compartment.Suction system may further include the container that is used to collect from the liquid of into treatment sites pumping, described container comprises or is combined in the 3rd compartment, second compartment is detachably connected to the first and/or the 3rd compartment, and the 3rd compartment is detachably connected to first and/or second compartment.
Therefore will be understood that the container that is used to collect liquid and pumping element removably install replacement or the cleaning to be used for it.Owing to be provided with aforesaid three compartments, described container can be replaced or empty and need not remove pumping element and maybe need not replace pumping element.Constitute relatively costly parts owing to compare pumping element with container, provide a kind of cheap pump and system not needing to replace on the meaning of pumping element if container will be replaced the present invention.
In a preferred embodiment of the invention, will be understood that first compartment constitutes driver element, promptly holds in order to cause those the required elements of pumping element pumping and the unit of parts.As following in further detail as described in, pumping element can be connected with driver part in drive connecting when second compartment is attached to the first and/or the 3rd compartment.
In this article, first, second should be understood to the part that constitutes or comprise the shell of pump with the 3rd compartment.Therefore, each compartment preferably has at least one wall part, when the described compartment of assembling when constituting the shell of described pump, described wall part constitutes the outer wall of the shell of described pump.In each compartment, one or several such compartment can be set, for example container, pumping chamber, motor casing etc.
Compartment discharge attached to each other can the realization in many different modes.The mechanical engagement device can be set, for example be used for relative to each other releasedly fixedly the latching member of compartment and/or lock construction.In addition, or select as an alternative, magnetic device can be set.
Pumping element can comprise the wriggling element, this wriggling element applies negative pressure by the continuous pucker ﹠ bloat of the flow cross section of pipe, pucker ﹠ bloat is for example realized by the rotatable element that has one or more ledges, described ledge acts on the outer surface of described pipe, causes the flow cross section pucker ﹠ bloat continuously in the described pipe thus.Alternatively, described pump can comprise at least one reciprocal element, for example piston or barrier film, and this reciprocal element is arranged to cause the continuous pucker ﹠ bloat in pumping chamber, and check valve separately is arranged on the entrance and exit in pumping chamber thus.
Alternatively, pumping element for example can comprise piston or barrier film, and first compartment can comprise and causes pumping element to move back and forth or cause those required elements of pump action thus.Preferably, the sealing member of impenetrable liquid and/or airtight body is arranged between pumping element and the driver element, thereby prevents that gas and/or liquid from entering driver element.For example, the pump head that for example comprises piston or film can be sealed on the next door along periphery.Can avoid the pollution of driver element thus, perhaps can reduce the contaminated risk of driver element.Therefore, owing to typically replace the 3rd compartment that has container when pump will be used for another patient, only being used between the different patients at device, the pump head of second compartment needs to sterilize.Therefore alternatively, second compartment can be disposable, can be replaced when pump second compartment when a patient moves to another patient.
First, second and the 3rd compartment can be arranged with various structures.For example, described compartment can have the cross section of general rectangular, and the first surface of second compartment is positioned at the flush with the first and/or the 3rd compartment.The second surface of second compartment relative with first surface can be arranged in another the flush with the first and the 3rd compartment.Alternatively, described compartment can be cardinal principle circle or arc.For example, each compartment can form circle or the arch-shaped elements of crossing over about 120 ° angle, makes each compartment contact other two compartments.Eligibly, second compartment directly is attached to first compartment, makes second compartment be attached to first compartment and causes pumping element to cooperate with the motor driver driving of first compartment.
As safety measure, compartment can be configured such that when from first/and second compartment when dismantling the 3rd compartment, second compartment only can be dismantled from first compartment.Therefore, can avoid when device during just from into treatment sites pumping liquid and other material pumping element be disassembled.In one embodiment, when the 3rd compartment was attached to second compartment, the latching member that is used for discharging from first compartment second compartment was covered by the 3rd compartment.In another embodiment, the electronic-controlled installation that for example comprises one or more switches and/or light emitting diode can arrange whether be used to detect the 3rd compartment in place, and if so, prevents to remove second compartment.
Described pump only can be configured to pump gas by pumping element and/or pump gas and liquid by wherein.Replace in the selection first, described container has at least one and is used for the inlet that liquids and gases enter described container, be used for gas with at least one and leave the outlet that described container enters pumping element, described entrance and exit is arranged such that with respect to described container and pumping element liquid is separated from the gas in the upstream of pumping element.In such embodiments, described pump comprises that further permission leaves the gas outlet of described pump by the gas of pumping element pumping.In this embodiment, can prevent from substantially at least to enter pump from the fluid of wound pumping and possible solid matter, the pump that weares and teares thus, and can avoid the risk of block pumps.
Replace in the selection at another, pumping element has at least one and is used for the inlet that liquids and gases enter pumping element, be used for the outlet that liquids and gases leave pumping element with at least one, the outlet of pumping element is connected to described container thus, and feasible liquid by the pumping element pumping is transported in the described container.In such embodiments, described pump comprises that further permission leaves the gas outlet of described pump by the gas of pumping element pumping.This embodiment can be suitable for such application, and wherein the obstruction of the element of pump can be not risky.
Will be understood that from the above description pumping element can preferably be attached in second compartment.Preferably, the reciprocating motion by pumping element causes that the pumping chamber of pucker ﹠ bloat also is attached in second compartment fully.Can realize thus preventing that the material of pumping from entering and polluting first compartment of the driver part that holds pump.
Gas outlet can be arranged in any one compartment, yet holds first compartment of the driver part of pump for fear of pollution, preferably gas outlet is arranged in the second or the 3rd compartment.One or more filters can as described belowly be set.
In such embodiments, wherein pumping element comprises pump head, from the gas of into treatment sites and/or liquid operating period of pump by described pump head pumping, the sealing member of impenetrable liquid and/or airtight body preferably is arranged between the pump head and first compartment, thereby prevents that gas and/or liquid from entering first compartment.Described sealing member can for example be provided by pumping element, for example constitute by film or piston, be sealed on second compartment, make when being attached to the first and/or the 3rd compartment under operative configuration, the pumping chamber of second compartment is sealed to be left second compartment with the material that prevents pumping and goes to first compartment.Alternatively, pumping element can comprise the wriggling element, and the continuous pucker ﹠ bloat of the flow cross section of this wriggling element by being contained in the pipe in second compartment applies negative pressure.The pucker ﹠ bloat of described pipe for example can be realized by the rotatable element that has one or more ledges, described ledge acts on the outer surface of described pipe, cause the flow cross section pucker ﹠ bloat continuously in the described pipe thus, such rotatable element is included in first compartment, is perhaps driven by the driver part in first compartment at least.
Can be provided for detecting the pressure sensing structure of the negative pressure in the wound covering thing, but for example comprise as top described offset component in detail.Alternatively or additionally, can be provided for detecting the pressure sensing element of the negative pressure in the container, but also comprise aforesaid offset component alternatively.Such pressure sensing element can be connected to control unit, and the operation of this control unit control pump motor is to guarantee keeping the expection negative pressure in into treatment sites.In one embodiment, pressure sensing element can be arranged in first compartment.Therefore, can not cause owing to the existence of pressure sensing element in most embodiment is that the second and the 3rd compartment of disposable elements is unnecessarily expensive.
Under pressure sensing element is arranged on situation in first compartment, pressure sensing element can be arranged in the pressure pipeline that extends through second compartment at least in part the place, end or near, making does not need independent external pipe or pipe to enter first compartment.This can reduce the quantity for the treatment of assembled components, be convenient to the operation of pump and reduce the contaminated risk of first compartment.
Pressure pipeline can lead to container or lead to the pressure introduction port of the second or the 3rd compartment.In back one was selected, pressure introduction port can be connected to into treatment sites, and for example by the wound of wound covering thing covering, pressure sensing element detects the pressure of into treatment sites in this case.Similarly, the pressure in can other parts of detection system.In first selected, pressure sensing element detected the pressure in the container, and this pressure can equal or represent at least the pressure of into treatment sites.
In other embodiments, pressure sensing element is arranged in second compartment.
Description of drawings
Referring now to accompanying drawing embodiments of the invention are described, wherein:
Fig. 1 schematically shows according to system of the present invention;
But Fig. 2 schematically shows pressure transducer and offset component;
But Fig. 3-14 schematically shows the various embodiment and they positions with respect to sensing apparatus of offset component;
Figure 15-the 22nd is used for the cross section according to the embodiment of the pump of system of the present invention;
Figure 23 and 24 is the sketch maps according to the further embodiment of system of the present invention;
Figure 25 illustrates the lateral perspective that is used at an embodiment of the segregation apparatus of the upstream of pump divided gas flow and liquid;
Figure 26 illustrates the perspective bottom view of the segregation apparatus among Figure 25;
Figure 27 illustrates the side perspective according to the driver element of the embodiment of the segregation apparatus among Figure 25, pump head and container;
Figure 28 illustrates another embodiment of segregation apparatus and pipeline, wherein the synthetic unit of segregation apparatus and pipeline group.
The specific embodiment
Fig. 1 shows the suction system 1 that comprises wound covering thing 2, described wound covering thing be attached to wound 3 around and therefore form enclosed area 4.Drainage pipe 5 is connected to the pump structure that is called pump head 6 hereinafter with enclosed area 4, and pressure signal pipeline 7 is communicated with enclosed area 4 fluids by inlet 8.But axial opposite end 9 usefulness offset components, 10 sealings of pressure signal pipeline 7, but described offset component prevents the exudate leakage in the enclosed area and therefore protects pick off 11 to avoid polluting.In Fig. 1, but only schematically show offset component and pick off.But the pressure reduction between the pressure in pressure in the enclosed area 4 and the surrounding space 12 causes the skew of offset component 10, and pick off 11 is suitable for determining such skew and determines described pressure reduction thus.Pick off 11 is located in the motor casing that hereinafter is called driver element 13, and described driver element also holds the Power Drive Unit that is used for activating by drives structure 14 pump head 6.Driver element further comprises the battery that uses for portable self-sufficiency.But offset component 10 is detachably connected to driver element 13 and is thus connected pick off 11.As shown in the figure, pressure signal pipeline 7 has the cross sectional dimensions littler than drainage pipe 5.
Drained into the reservoir 16 from pump head 6 by the liquid of drain and other exudate 15, and the gas that is sucked is discharged into surrounding space 12 by filter 17 and outlet 18.Filter prevents that the germ contamination of surrounding and filter from can prevent stench.
But Fig. 2 is attached to the details that offset component 19 and pick off 20 are shown under the situation of pick off at pressure signal pipeline 7.But offset component 19 has the shape of corrugated tube, and the pressure reduction between its pressure based on negative pressure in the enclosed area 4 and surrounding space (i.e. atmospheric pressure in this example) changes shape.When negative pressure reduced, the corrugated tube shape parts shortened, and pick off 20 senses the length that this reduces.Dotted line represents to be in the corrugated tube shape parts of extended configuration, and solid line represents to be in the corrugated tube shape parts of compressive state.
But Fig. 3 a illustrates the side view of the offset component that is positioned at the enclosed area.Reference numeral 21 expression wound covering things, Reference numeral 22 expressions are arranged in the dust collecter of enclosed area, and bellows is measured in Reference numeral 23 expressions, Reference numeral 24 expression measuring tubes, and Reference numeral 25 expression suction tubes.Fig. 3 b illustrates same embodiment from the top view of measuring bellows, and wherein corrugated tube 26 is offset based on pressure reduction.
Fig. 4 a illustrates remote pickup and connects.Reference numeral 27 expression measuring chambers, and Reference numeral 28 expression pick offs.Fig. 4 b illustrates the alternative embodiment that has the pipe connection 29 of leading to measurement point.But will be understood that Fig. 4 a and 4b and not shown offset component, but only show transducer arrangements.
But Fig. 5 illustrates the offset component of mobile piston 30 forms in the cylinder 31 that is connected to measuring tube 32.
Fig. 6 illustrates liquid piston 33, and this liquid piston moves in measuring tube 34 based on described pressure reduction.
But Fig. 7 illustrates the offset component of the membranous shape that is positioned at the remote pickup place.Reference numeral 35 expression measuring tubes, Reference numeral 36 expressions have the shell of barrier film 37, and Reference numeral 38 expressions are clasped, Reference numeral 39 expression measuring chambers, and Reference numeral 40 expression pick offs.
But Fig. 8 illustrates the offset component of the corrugated tube form that is positioned at the pick off front.Reference numeral 41 expression measuring tubes, Reference numeral 42 expressions are clasped, Reference numeral 43 expression measuring chambers, and Reference numeral 44 expression pick offs.
But Fig. 9 is illustrated in the offset component in disposable pump head or the waste canister.Reference numeral 45 expression pump head or waste canisters, Reference numeral 46 expression driver elements, Reference numeral 47 expression pick offs, and Reference numeral 48 is represented independently measuring chamber.
Figure 10 illustrates and uses shell 49 (it comprises the passage 50 that shell is connected to the enclosed area), barrier film 51, spring base 52 and spring 53 and potentiometer 54 to carry out contact measurement.Therefore potentiometer joins barrier film to and is moved by barrier film by directly contacting with barrier film.
Figure 11 illustrates alternative mode of carrying out contact measurement.In this embodiment, in the susceptiveness of additional springs 55 generators of disposable unit inside, but and additional than slinky spring 53 provide potentiometer and offset component contact against so that potentiometer is followed and is moved and do not need between the two joint.
Figure 12 illustrates the service range pick off and carries out noncontacting measurement.Reference numeral 56 expression shells, Reference numeral 57 represents shell is connected to the passage of enclosed area, Reference numeral 58 expression barrier films, Reference numeral 59 expression pick offs, and the spring of the susceptiveness of Reference numeral 60 expression generators.
Figure 13 illustrates and uses magnetic resistance to carry out noncontacting measurement.Reference numeral 61 expression shells, this shell have barrier film 62 and shell are connected to the passage 63 of enclosed area, and Reference numeral 64 is springs, and Reference numeral 65 is iron cores, and Reference numeral 66 is coils.
Use is arranged in the disposable storage tank of exudate or the offset component of catcher carries out noncontacting measurement but Figure 14 illustrates.Reference numeral 67 expressions have the storage tank of exudate 68, and Reference numeral 69 is represented independently measuring chamber, Reference numeral 70 expression windows, Reference numeral 71 expression pick offs, and Reference numeral 72 expression driver elements.
Figure 15 and 16 is the pump cross-sectional views in two vertical planes that are used for system according to the invention.Pump comprises three compartments, first compartment 101, second compartment 102 and the 3rd compartment 103.Describe in further detail as following, first compartment 101 hold driver part so that the pumping element of second compartment 102 from wound pumping exudate.The 3rd compartment 103 comprises the collection container 105 that is used to collect from the liquid of wound pumping.
The 3rd compartment 103 is removably attached to second compartment, 102, the second compartments then is removably attached to first compartment 101.Compartment detachable fixing relative to each other for example can be passed through one or more latching members, and for example any combination of spring bias voltage latching member, magnetic devices, one or more lock or aforementioned means realizes.In order to prevent that second compartment 102 unexpectedly is removed from first compartment 101, be used to discharge the surface that second compartment and the detachable release-push that connects or the button of first compartment 101 can be arranged on compartment 102, and when the 3rd compartment 103 was attached to second compartment 102, described surface was in abutting connection with the 3rd compartment 103 and make the described surface can not be approaching by the 3rd compartment.
Electronic control unit can be provided for guaranteeing that three compartments are not separated when pump is operated.For example, if in the container 105 that records by pressure sensing element 132 and/or the negative pressure of wound at certain more than the threshold value, then can the 3rd compartment 103 can not be taken place from second compartment 102 and/or from the release of first compartment 101 by electronic operation magnet or lock.Alternatively, operating if be used for the motor 116 of driving pump, if perhaps pump is energized, compartment then can be by the control unit interlocking.
The inlet 120 of pump extends through second compartment 102 and leads to the collection container 105 of the 3rd compartment 103.The outlet 122 that is used for emission gases is arranged on the downstream of pump.Outlet 122 also extends through second compartment 102 and leads to the 3rd compartment 103.The part that is arranged in the 3rd compartment 103 in outlet 122 is provided with adour filter 124 and biofilter 126.
Usually advantageously, no matter still be that any filter in downstream all is arranged in the 3rd compartment in the upstream in pumping chamber 106.Therefore, when changing the 3rd compartment, provide new filter, prolonged the ruggedness of second compartment 102 thus.
The pump action that is produced by the reciprocating motion of barrier film 104 provides negative pressure in the collection container 105 of the 3rd compartment 103.Collection container 105 is connected to the wound (not shown) by drainage pipe 128, produces negative pressure in wound location thus.Pressure pipeline 130 is provided for being connected wound location and pressure sensing element 132 by extending through second with the pressure port of the 3rd compartment 102,103.In the upstream of pick off 132, but the offset component 132* of the barrier of the airtight substantially body of formation is set preferably between pick off 132 and wound enclosed area (not shown) promptly.But can implement offset component and pressure transducer 132 as described above with reference to figure 1-14.
Figure 17-20 illustrates the improvement embodiment of the pump of Figure 15 and 16, and its mesospore 136 (Figure 17 and 18) and 138 (Figure 19 and 20) are provided for guaranteeing the top intake-gas from container 105.
In the embodiment of Figure 21 and 22, wall 140 is arranged in the 3rd compartment to form the passage that drainage pipe 128 is connected to pump intake 120.Thus from any material pumping that comprises liquid of wound pumping by pumping chamber 106.Therefore, delivery side of pump 122 is arranged to liquids and gases are discharged in the collection container 105 of the 3rd compartment 103.In this embodiment, the air vent that comprises adour filter 124 and biofilter 126 makes collection container 105 be connected with permission from the container emission gases with outside.
Should be understood that, above the pressure sensing structure described with reference to figure 1-14 can be applied in the pump configuration with reference to figure 15-22 description.
Figure 23 illustrates the first embodiment of the present invention, and wherein wound covering thing 201 is connected to the segregation apparatus 204 that comprises container 210 by means of pipeline 202 via fluid intake 203.This segregation apparatus makes liquid separated from the gas, and therefore has only gas to pass gas outlet's 205 arrival pump heads 206 substantially.In this embodiment, separated liquid and possible solid matter are collected in the container 210.Driver element 208 drives pump head 206 system that makes negative pressure is provided.Pump head 206 also comprises outlet 207 and filter 209.
Figure 24 illustrates second embodiment according to system of the present invention, and wherein pump head 206 is combined into a unit with segregation apparatus 204.For example, pump head 206 can be combined in the container 210.
Figure 25 illustrates the side perspective of an embodiment of segregation apparatus 204.
Figure 26 illustrates the bottom perspective view of the segregation apparatus 204 among Figure 24.In this embodiment, segregation apparatus 204 comprises the elongated member that has second fluid intake 212, fluid issuing 211 and second gas outlet 213.When the fluid from wound passed second fluid intake 212, described fluid was separated into subsequently and passes the gas that fluid issuing 211 enters the liquid of container (not shown) and passes second gas outlet 213.Separation can realize by means of gravity, make liquid fall by fluid issuing 211, and gas continues to go to second gas outlet 213.
Figure 27 illustrates the side perspective according to the driver element 208 that holds the segregation apparatus 204 among Figure 25, pump head 206 and the container 210 of this embodiment.In the heart groove is provided for holding the segregation apparatus 204 of Figure 26 in the end face of driver element 208, pump head 206 and container 210.Pump head 206 be provided with pump gas access 213 ', this pump gas access is provided with and is placed to the gas outlet 213 corresponding to segregation apparatus.Container 210 be provided with fluid intake 211 ', this fluid intake is corresponding to the fluid issuing 211 of segregation apparatus 204.
Figure 28 illustrates another embodiment of segregation apparatus 204 and pipeline 202, and wherein segregation apparatus 204 and pipeline 202 are combined into a unit.In this embodiment, segregation apparatus 204 and pipeline 202 are set to pipe, and described pipe comprises second fluid issuing 215 and the 3rd gas outlet 216 in distal portions.The mode that fluid is separated into liquids and gases is identical with the embodiment shown in Figure 25-27.In another embodiment, filter is placed on fluid intake 211 ' before, to guarantee not having liquid to enter in the pump head 206.
The pump configuration that will be understood that Figure 15-22 can be applied to reference in the described system of figure 23-28.
Claims (64)
1. suction system that is used for removing exudate from wound, this suction system comprises:
The wound covering thing, it can be attached to the wound circumference of live body, forms the enclosed area thus;
Pump, it is communicated with described enclosed area fluid, with the pressure reduction between the air pressure that negative pressure in the described enclosed area and surrounding space are provided;
But offset component, but it is arranged such that with respect to described enclosed area described pressure reduction can cause the skew of described offset component; With
Pressure-sensing device, but it is positioned at the outside of described enclosed area and is arranged to the skew of response pressure or described offset component and signal is provided;
But wherein said offset component forms the barrier of airtight substantially body between described pick off and described enclosed area.
2. suction system according to claim 1, but wherein offset component removably joins sensing apparatus to.
3. suction system according to claim 1 and 2, but wherein offset component is removably mounted on the fixed position with respect to sensing apparatus.
4. according to each described suction system among the claim 1-3, but wherein offset component forms a part that makes enclosed area and the isolated wall of surrounding space.
5. according to each described suction system in the aforementioned claim, but wherein offset component forms the wall part of the pressure signal pipeline that is communicated with the enclosed area fluid.
6. suction system according to claim 5, wherein the pressure signal pipeline forms the inlet enter the enclosed area, and this inlet comprises and prevents that liquid substance from entering the isolation structure of pressure signal pipeline.
7. according to the described suction system of claim 5-6, the drainage pipe of the fluid connection that provides between enclosed area and the pump is provided described suction system, and drainage pipe and pressure signal pipeline form a single elongated member.
8. suction system according to claim 7, wherein the pressure signal pipe road has the cross-sectional area littler than drainage pipe.
9. according to each described suction system in the aforementioned claim, wherein pump is contained in the pump case, and described pump case further holds pick off and draw bail, but described draw bail is used for respect to pick off offset component being fixed on operating position.
10. suction system according to claim 9, wherein said draw bail is further adapted for drainage pipe is connected to pump.
11. suction system according to claim 10, wherein said draw bail be suitable for by single user effect disconnect drainage pipe and pressure signal pipeline the two with being connected of pump case.
12. according to the described suction system of claim 9-11, wherein pump case is divided into pump head and driver element, described pump head comprises the pump structure that can be connected to drainage pipe, described driver element holds and is used to activate the Power Drive Unit of pump structure and can be connected to the pressure signal pipeline, and described pump head is detachably connected to described driver element.
13. according to each described suction system in the aforementioned claim, described suction system comprises control structure, this control structure is based on the pressure signal control pump, so that the expection negative pressure to be provided.
14. according to each described suction system in the aforementioned claim, but wherein offset component is pushed along first direction by the flexible spring device.
15. suction system according to claim 14, but wherein offset component by negative pressure than the low pressure reduction of the pressure of surrounding space along being pushed in the opposite direction with first party.
16. according to each described suction system in the aforementioned claim, wherein said pump comprises pump head, described system further comprises segregation apparatus, this segregation apparatus comprises fluid intake and gas outlet, described pump head is connected to the gas outlet of segregation apparatus, and wherein said pump head is removably attached to driver element, makes that in use the fluid intake of segregation apparatus for example is connected to the wound covering thing via pipeline.
17. according to each described suction system in the aforementioned claim, wherein said pump comprises membrane pump.
18. according to each described suction system in the aforementioned claim, described suction system comprises the driver element that has motor.
19. according to each described suction system among the claim 16-18, wherein said pump head is disposable.
20. according to each described suction system among the claim 16-19, wherein said segregation apparatus and described pump head are included in the unit.
21. according to each described suction system among the claim 16-20, wherein said system comprises filter.
22. suction system according to claim 21, wherein said filter is placed on the front of pump head.
23. suction system according to claim 21, wherein said filter is placed on the exit of pump head.
24. according to each described suction system among the claim 16-23, wherein said driver element is provided with control unit.
25. suction system according to claim 24, wherein said control unit are the integral parts of described driver element.
26. according to each described suction system among the claim 16-25, wherein said pump head is reusable.
27. according to each described suction system among the claim 16-26, wherein said pump head can be sterilized.
28. according to each described suction system among the claim 16-27, wherein segregation apparatus comprises container.
29. suction system according to claim 28, wherein said container has:
At least one is used for the inlet that liquids and gases enter described container; With
At least one is used for gas and leaves the outlet that described container enters pump head;
Described entrance and exit is with respect to described container and be used to apply means for applying negative and be arranged such that liquid is separated from the gas in the upstream of pumping element;
Be used to apply means for applying negative and comprise that further permission leaves the gas outlet of described pump by the gas of pumping element pumping.
30. suction system according to claim 28, wherein said container has:
At least one is used for the inlet that liquids and gases enter described container; With
At least one is used for liquids and gases and leaves the outlet that described container enters pumping element;
The outlet of pumping element is connected to described container thus, and feasible liquid by the pumping element pumping is transported in the described container;
Described pump comprises that further permission leaves the gas outlet of described pump by the gas of pumping element pumping.
31. according to each described suction system among the claim 28-30, wherein said container comprises absorber element.
32. according to each described suction system among the claim 28-31, described suction system further comprises and is used for preventing that the liquid of described container from entering the structure of pumping element.
33. according to each described suction system in the aforementioned claim, described suction system comprises that further permission gas is discharged to the air exit of ambient atmosphere, this air exit is provided with pneumatic filter.
34. according to each described suction system in the aforementioned claim, wherein said pumping element comprises piston.
35. according to each described suction system in the aforementioned claim, wherein said pumping element comprises barrier film.
36. according to each described suction system in the aforementioned claim, wherein the wound covering thing comprises the semi permeability cover foil.
37. according to each described suction system in the aforementioned claim, described suction system further comprises the flexible structure that allows to carry exudate in the wound covering thing.
38. according to the described suction system of claim 37, wherein said flexible structure comprises foam of polymers.
39. according to the described suction system of claim 38, wherein said foam of polymers comprises open celled polymeric foam.
40. according to claim 9 and 16 described suction systems, wherein pressure-sensing device is included in the described pump case, and wherein the wound covering thing is connected to described segregation apparatus via the multi-cavity pipeline, and described multi-cavity pipeline comprises the second channel that is used for applying the first passage of negative pressure in the wound covering thing and is used for negative pressure is delivered to pressure sensing element.
41. according to each described suction system in the aforementioned claim, wherein pressure sensing element is included in the wound covering thing or wound covering thing place, pressure sensing element is suitable for the control unit of electronic signal transmission to described device.
42. according to each described suction system in the aforementioned claim, wherein pressure sensing element is arranged the stress level that is used to detect in the wound covering thing.
43. according to the described suction system of claim 42, wherein pressure sensing element is arranged the stress level of the fluid collecting container that is used for detection system.
44. according to each described suction system in the aforementioned claim, described suction system further comprises the irrigation system that is used for the lavation wound.
45. according to each described suction system in the aforementioned claim, described suction system comprises first, the second and the 3rd compartment, described pump comprises motor-driven pumping element and is used for driving force is offered the motor of described pumping element, described motor is included in described first compartment, and described pumping element is included in second compartment, described suction system further comprises the container that is used to collect from the liquid of into treatment sites pumping, described container comprises or is combined in the 3rd compartment, second compartment is detachably connected to the first and/or the 3rd compartment, and the 3rd compartment is detachably connected to first and/or second compartment.
46. according to the described suction system of claim 45, wherein when from first/and second compartment when dismantling the 3rd compartment, only can dismantle second compartment from first compartment.
47. according to claim 45 or 46 described suction systems, wherein said container has:
At least one is used for the inlet that liquids and gases enter described container; With
At least one is used for gas and leaves the outlet that described container enters pumping element;
Described entrance and exit is arranged such that with respect to described container and pumping element liquid is separated from the gas in the upstream of pumping element;
Described system comprises that further permission leaves the gas outlet of described pump by the gas of pumping element pumping.
48. according to claim 45 or 46 described suction systems, wherein said pumping element has:
At least one is used for the inlet that liquids and gases enter described container; With
At least one is used for the outlet that liquids and gases leave pumping element;
The outlet of pumping element is connected to described container thus, and feasible liquid by the pumping element pumping is transported in the described container;
Described system comprises that further permission leaves the gas outlet of described pump by the gas of pumping element pumping.
49. according to each described suction system in the aforementioned claim, wherein said pumping element is attached in second compartment.
50. according to each described suction system among claim 49 and the claim 45-48, wherein said gas outlet is arranged in described second compartment.
51. according to each described suction system among claim 49 and the claim 45-48, wherein said gas outlet is arranged in described the 3rd compartment.
52. according to each described suction system among the claim 45-51, wherein pumping element comprises pump head, from the gas of into treatment sites and/or liquid system operating period by described pump head pumping, and wherein the sealing member of impenetrable liquid and/or airtight body is arranged between the pump head and first compartment, thereby prevents that gas and/or liquid from entering first compartment.
53. according to each described suction system among the claim 45-52, described suction system further comprises the pressure sensing element that is used to detect the negative pressure in the wound covering thing.
54. according to each described suction system in the aforementioned claim, described suction system further comprises the pressure sensing element of the negative pressure that is used for detecting described container.
55. according to claim 53 or 54 described suction systems, wherein pressure sensing element is arranged in first compartment.
56. according to the described suction system of claim 55, wherein pressure sensing element be arranged in the pressure pipeline that extends through second compartment at least in part end place or near.
57. according to the described suction system of claim 55, wherein said pressure pipeline leads to described container.
58. according to the described suction system of claim 56, wherein said pressure pipeline leads to the pressure introduction port of the second or the 3rd compartment.
59. according to claim 53 or 54 described suction systems, wherein pressure sensing element is arranged in second compartment.
60. according to each described suction system among the claim 53-59, described suction system further comprises airtight substantially body and/or liquid-tight barrier, to be used to prevent gas and/or liquid contamination pressure sensing element.
61. according to each described suction system in the aforementioned claim, wherein second compartment comprises the latching member that is used for dismantling from first compartment second compartment, and wherein described latching member can not be approaching when the 3rd compartment is attached to second compartment.
62. a method that is used for removing from wound exudate said method comprising the steps of:
Center on the enclosed area of wound by the formation on every side that the wound covering thing is attached to wound;
Provide pressure reduction between the negative pressure in described enclosed area and the air pressure of surrounding space;
Arrange that with respect to described enclosed area but but offset component makes described pressure reduction cause the skew of described offset component; With
But respond the skew of described offset component and pressure signal is provided;
But wherein said offset component is arranged to form bacterial barriers between pick off and described enclosed area.
63. according to the described method of claim 62, wherein control described pump, so that the expection negative pressure to be provided based on pressure signal.
64., wherein sensing signal is calibrated according to claim 62 or 63 described methods.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA200600148 | 2006-02-02 | ||
| DKPA200600147 | 2006-02-02 | ||
| DKPA200600149 | 2006-02-02 | ||
| DKPA200600147 | 2006-02-02 | ||
| DKPA200601010 | 2006-07-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101378803A true CN101378803A (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 |
| CNA2007800043344A Pending CN101378795A (en) | 2006-02-02 | 2007-02-01 | Device, pump and system for stimulating the healing 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 |
Family Applications Before (3)
| 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 |
| CNA2007800043344A Pending CN101378795A (en) | 2006-02-02 | 2007-02-01 | Device, pump and system for stimulating the healing of a wound |
| CNA200780004326XA Pending CN101378794A (en) | 2006-02-02 | 2007-02-01 | A suction method and a wound suction system |
Country Status (1)
| Country | Link |
|---|---|
| CN (4) | CN101378793A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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2007
- 2007-02-01 CN CNA2007800043170A patent/CN101378793A/en active Pending
- 2007-02-01 CN CNA2007800043344A patent/CN101378795A/en active Pending
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- 2007-02-01 CN CNA2007800043363A patent/CN101378803A/en active Pending
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| US11337408B2 (en) | 2012-12-18 | 2022-05-24 | Clearwater Seafoods Limited Partnership | Emersed shellfish storage |
| CN105126228A (en) * | 2015-10-21 | 2015-12-09 | 迟金亭 | Intelligent traditional Chinese medicine kidney disease therapeutic apparatus |
| CN105126228B (en) * | 2015-10-21 | 2019-09-13 | 迟金亭 | A kind of intelligence Chinese Medical Nephrosis therapeutic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101378794A (en) | 2009-03-04 |
| CN101378793A (en) | 2009-03-04 |
| CN101378795A (en) | 2009-03-04 |
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