CN101446280B

CN101446280B - Removable pump and negative pressure wound treatment system using same

Info

Publication number: CN101446280B
Application number: CN200710194850XA
Authority: CN
Inventors: 沈德洋; 姚南光
Original assignee: Industrial Technology Research Institute ITRI
Current assignee: Industrial Technology Research Institute ITRI
Priority date: 2007-11-27
Filing date: 2007-11-27
Publication date: 2011-07-27
Anticipated expiration: 2027-11-27
Also published as: CN101446280A

Abstract

The invention relates to a removable pump and a negative pressure wound treatment system using same. The removable pump comprises an upper module and a lower module. The upper module comprises a motor set and an elastic component. The lower module is connected with the lower part of the upper module by a removable conjunction structure and comprises a base, at least a suction check valve, at least a discharging check valve, a thin-film device and a lower elastic component. The base is provided with at least a suction passage and at least a discharging passage. The suction check valve and the discharging check valve are used for avoiding that waste liquor reflows to a wound or the base. The motor set can push the elastic component. And the mutual balance elastic of the lower elastic component and the upper elastic push the thin-film device pushes the thin-film device to form pump sucking power. The removable pump is matched with dressing and absorbing material and is applied in the negative pressure wound treatment system. After wound waster liquor passes through dressing and the pump, the wound waster liquor is absorbed directly by the absorbing materials; therefore, the purposes of shortening the length of a pipeline, reducing the volume of a negative vessel and reducing the power of the battery module and the pump, and the like are achieved.

Description

Removable pump and the negative pressure wound treatment system that uses this pump

Technical field

The present invention is about a kind of pump and the negative pressure wound treatment system that uses this pump, relates in particular to a kind of removable pump and uses the negative pressure wound treatment system of this pump.

Background technique

The tradition negative pressure wound treatment system, as shown in Figure 1, be to utilize vacuum pump 100 in conjunction with sealing patch 200, soft sucker (not shown) and biocompatibility hole dressing 300, dressing 300 connecting tubes 310 are to waste liquid accumulator tank 600, this waste liquid accumulator tank 600 again connecting tube 110 to vacuum pump 100, in the wound 500 of skin 400, form subnormal ambient, fester in the extraction wound 500 and infected material, attraction health tissues liquid are kept moist treatment environment, and promote the peripheral blood micro circulation, and then reach the effect of accelerating wound healing.

The series sequence design of aforementioned dressing 300, waste liquid accumulator tank 600, vacuum pump 100, main purpose is to avoid vacuum pump 100 to be polluted, but this kind structure causes existing many shortcomings as follows:

One, vacuum pump 100 is long to the pipeline of wound 500, uses inconvenience, gas leakage easily, and the waste vacuum energy.

Two, vacuum pump 100 is based on the consideration of factors such as power, noise, life-span, must adopt large capacity motor, causes therefore also that the pump motor is overweight, cost is too high.

Three, pump motor power consumption height, the large-sized battery module 700 of must arranging in pairs or groups makes that volume strengthens, weight increases the weight of.

Four, waste liquid accumulator tank 600 volumes are big, take up space and difficult carrying.

Five, waste liquid rocks, topples over because of waste liquid accumulator tank 600, easily causes systemic contamination or stops.

Six, total system volume and weight can't effectively be reduced, unfavorable patient's portable.

In the known patent, as No. 7216651, U.S.'s patent of invention " Wound treatment employingreduced pressure ", the disclosed negative pressure wound treatment system of this patent, its device is promptly followed the order series connection of traditional dressing, waste fluid container, pump, so project organization bulky complex and costliness.

For another No. 5549584, U.S.'s patent of invention " Apparatus for removing fluid from awound ", a kind of wound waste liquid of this patent disclosure draw-out device, wound dressing is connected a bellows pump, this bellows pump connects a waste collection bag again, though this draw-out device adopts the series sequence of dressing, pump, waste collection bag to be different from traditional serial fashion, but because its bellows pump provides negative pressure with manual mode, though mode of operation is simple, but accurate pilot pressure, curative effect leaves a question open, and is not suitable for than the large size wound.

U.S.'s patent of invention discloses " Self contained wound dressingapparatus " No. 2007/0055209 for another example, the disclosed wound dressing control gear of this patent, follow the order series connection of dressing, pump, waste fluid container, but its pump adopts peristaltic pump, aspiration is minimum, and, then must strengthen pump if desire improves aspiration, can cause bulky again.

Summary of the invention

The objective of the invention is to propose a kind of removable pump, the detachable recycling of its pump motor, and the pump assembly that contacts with waste liquid can be abandoned the processing displacement; Should cooperate dressing and absorbent material to be applied in the negative pressure wound treatment system by removable pump, the wound waste liquid by dressing, pump after, directly absorb, shorten pipe-line length to reach, reduce the negative-pressure container volume, reduce purposes such as pump and battery module power by absorbent material.

For achieving the above object, the negative pressure wound treatment system that the present invention proposes a kind of removable pump and uses this pump, this removable pump is made of a upper module and a lower module; This upper module comprises elastic component on a groups of motors and; This lower module is linked to this upper module below by removable connect mechanism, it comprises that a pedestal, at least one one-way valve, a thin-film device reach elastic component, this pedestal has at least one passage, provides object to flow in this pedestal by this pedestal is outside, is discharged by this pedestal again; This one-way valve is arranged at an end of this passage, can avoid waste liquid to be back to wound or this pedestal by this one-way valve; This groups of motors can promote elastic component on this, promotes this thin-film device by the mutual balance of elastic force of descending elastic component and last elastic component again and forms the pump suction power; Should be removable pump cooperate dressing and absorbent material to be applied in the negative pressure wound treatment system, the wound waste liquid by dressing, pump after, directly absorb by absorbent material.

Use the negative pressure wound treatment system of this removable pump to comprise a dressing, this removable pump and an absorbent material.This dressing is in order to be arranged in the wound, and this removable pump is arranged in this dressing, and in order to the suction negative pressure to be provided, this absorbent material is in order to absorb the waste liquid that this removable pump is discharged.

Beneficial effect of the present invention is, removable pump provided by the present invention, and the detachable recycling of its motor, and the pump assembly that contacts with waste liquid can be abandoned the processing displacement; Should be removable pump cooperate dressing and absorbent material to be applied in the negative pressure wound treatment system, the wound waste liquid by dressing, pump after, directly absorb by absorbent material, can shorten duct length, reduce the negative-pressure container volume, reduction pump and battery module power.

Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.

Description of drawings

Fig. 1 is the structural representation of known negative pressure wound treatment system;

Fig. 2 is the removable pump embodiment's of the present invention upper module and the sectional structure chart of lower module partition;

Fig. 3 is a removable pump embodiment's of the present invention composite structure sectional drawing;

Fig. 4 is applied to the structural representation of negative pressure wound treatment system for removable pump embodiment of the present invention;

Output power curve figure when Fig. 5 is applied to negative pressure wound treatment system for the present invention;

Fig. 6 is the absorbent material embodiment's that negative pressure wound treatment system of the present invention adopted surface structure schematic representation;

Fig. 7 is the absorbent material embodiment that negative pressure wound treatment system of the present invention adopted and the integrated surface structure schematic representation of lower module of removable pump of the present invention.

Wherein, reference character

100 vacuum pumps

110 pipelines

200 seal patch

300 dressing

310 pipelines

400 skin

500 wounds

600 waste liquid accumulator tanks

700 battery modules

800 removable pumps

The 800a upper module

The 800b lower module

801 fixed bases

8011 holes

802 housings

803 magnetic conductance seats

804 internal magnetic rings

805 outer magnetic rings

806 guide rails

807 bobbin winder bases

8071 flanges

808 coils

8081 power lines

Elastic component on 809

810 movable parts

8101 internal threads

811 times elastic components

812 suck one-way valve

814 cushion pads

815 pipelines

816 breather lines

817 pedestals

8171 suction passages

The 8171a suction side

The 8171b end

8172 discharge routes

The 8172a entry end

The 8172b exhaust end

8173 fixed blocks

8174 outside threads

818 discharge one-way valve

8181 pressing parts

819 seats of honour

820 thin-film devices

900,900a, 900b absorbent material

901a, 901b projective structure

902a, 902b runner

910,910a, 910b water-proofing material

920,920a, 920b poromeric material

C bobbin winder base central shaft to

Embodiment

For making purpose of the present invention, structure, feature and function thereof are had further understanding, with reference to the accompanying drawings and cooperate embodiment to be described in detail as follows, but drawings and Examples are aid illustration only, and the present invention is not limited to drawings and Examples.

See also Fig. 2 and shown in Figure 3, removable pump 800 provided by the invention, it mainly is made of a upper module 800a and a lower module 800b that can motor-driven dismounting.

This upper module 800a comprises a bobbin winder base 807, and this bobbin winder base 807 has a central shaft to C, is wound with coil 808 outside this bobbin winder base 807, and this coil 808 connects the foreign current (not shown), constitutes a mover group by this bobbin winder base 807 and coil 808; This upper module 800a comprises the group of magnets that outer magnetic ring 805 that an internal magnetic ring 804 and is sheathed on these internal magnetic ring 804 outsides is constituted again, an and magnetic conductance seat 803, this coil 808 is located between this internal magnetic ring 804 and this outer magnetic ring 805, this magnetic conductance seat 803 covers at this outer magnetic ring 805 outsides, this internal magnetic ring 804 and outer magnetic ring 805 can adopt permanent magnet, this magnetic conductance seat 803 can adopt the magnetic core material to make, and constitutes stator group by this internal magnetic ring 804, outer magnetic ring 805 and magnetic conductance seat 803.This mover group and this stator pack promptly constitute a groups of motors.

This upper module 800a more comprises a guide rail 806, this guide rail 806 can adopt rigid metallic material, this guide rail 806 is arranged at the bottom of this magnetic conductance seat 803, and has an extended length direction, this extended length direction is positioned at these bobbin winder base 807 central shafts to C, and this guide rail 806 convexedly stretches in this bobbin winder base 807, this guide rail 806; Articulate mutually with this bobbin winder base 807, but in order to guide this bobbin winder base 807 straight reciprocating motions; Be provided with elastic component 809 on again between this magnetic conductance seat 803 and this bobbin winder base 807, elastic component 809 can adopt spring or other rubber-like devices on this, should go up elastic component 809 and be sheathed on outside this guide rail 806; Moreover, this upper module 800a more comprises a fixed base 801, forming one between this fixed base 801 and this magnetic conductance seat 803 holds the space is set, can the mover group that this bobbin winder base 807 and coil 808 are constituted be set in order to hold, this fixed base 801 has a hole 8011, and this hole 8011 allows that the bottom of this bobbin winder base 807 convexedly stretches in outside this fixed base 801; Outer side wall in this bobbin winder base 807 has a flange 8071, the external diameter of this flange 8071 is greater than the internal diameter of the hole 8011 of this fixed base 801, this bobbin winder base 807 can be constrained to lie in the containing space that this fixed base 801 and this magnetic conductance seat 803 form and this containing space of unlikely disengaging.

Secondly, be covered with a housing 802 in this fixed base 801 and this magnetic conductance seat 803 outsides, by this this fixed base 801 of housing 802 complete coverings and this magnetic conductance seat 803 and inner other members thereof, this housing 802 can adopt plastifying material; In these housing 802 outside sheathed movable parts 810, this movable part 810 is a ring bodies again, and its madial wall is provided with internal thread 8101, after the effect of this movable part 810 will be illustrated in.

About this lower module 800b, it comprises a pedestal 817, this pedestal 817 extends upward and forms a fixed block 8173, be provided with outside thread 8174 in these fixed block 8173 outer side walls, this outside thread 8174 can screw togather mutually with the internal thread 8101 of the movable part 810 of aforementioned this upper module 800a, reach whereby this upper module 800a can with the purpose of the motor-driven dismounting of this lower module 800b; But it must be emphasized that, this internal thread 8101 screws togather the removable connect mechanism that is constituted mutually with outside thread 8174, its purpose be to make this upper module 800a can with the motor-driven dismounting of this lower module 800b, in addition, also can utilize removable connect mechanisms such as trip, draw-in groove, buckle, this belongs to those of ordinary skill in the art's known technology, will not describe in detail at this.

This pedestal 817 has a suction passage 8171 and is symmetricly set in the runner that the discharge route 8172 of these pedestal 817 both sides is constituted; This suction passage 8171 has a suction side 8171a and a terminal 8171b, the exterior object (not shown) can be entered in this pedestal 817 by this suction side 8171a, be provided with one in this end 8171b and suck one-way valve 812, this sucks one-way valve 812 flakiness shapes, be covered in this end 8171b by this outside that sucks terminal 8171b, in other words, after object sucks one-way valve 812 by this, promptly can't be back to this suction passage 8171 again; In like manner, this discharge route 8172 has an entry end 8172a and an exhaust end 8172b, be provided with one in this entry end 8172a and discharge one-way valve 818, this discharge one-way valve 818 covers this entry end 8172a by the inside of this entry end 8172a, in other words, after object is discharged one-way valve 818 by this, entered this discharge route 8172, promptly can't be back to again in this pedestal 817.

Mandatory declaration be, aforementioned this suction passage 8171, discharge route 8172 quantity, position and kenel and indefinite be set, look actual state and design; And this suction one-way valve 812 and discharge the form of one-way valve 818 and quantity is set and the position also is not limited to shown in the accompanying drawing, with regard to present embodiment, this suction one-way valve 812 and discharge one-way valve 818 can adopt the rubber material one-body molded, with demand such as reach light weight, reduced volume, reduce cost, should suck one-way valve 812 and discharge one-way valve 818 by a pressing part 8181 again and be pressed on this pedestal 817.

Secondly, this lower module 800b comprises elastic component 811 again, and this time elastic component 811 is arranged in this pedestal 817, in present embodiment, should go up elastic component 809 and this time elastic component 811 adopts springs, and upward elastic component 809 and this time elastic component 811 are positioned at same shaft core position; Be provided with a thin-film device 820 in this pedestal 817, this thin-film device 820 is covered on this time elastic component 811, can adopt rubber etc. to have certain flexible material; In this pedestal 817, be provided with a seat of honour 819, this seat of honour 819 can be by ultrasonic wave welding and 817 fusions of this pedestal, by being erected on this seat of honour 819 on this fixed block 8173, this thin-film device 820 can be located on this pressing part 8181 in this pedestal 817, this thin-film device 820 be constrained to lie in this lower module 800b and this lower module of unlikely disengaging 800b.

Moreover, being provided with a cushion pad 814 in these pedestal 817 bottoms, this cushion pad 814 can adopt soft silica gel material; This cushion pad 814 is the opening shape of downward expansion, on this cushion pad 814, be provided with a breather line 816, this breather line 816 can provide air to enter this cushion pad bottom by these cushion pad 814 tops, the filtering material of one of materials such as active carbon filtration film, oxygen permeable membrane or molecular sieve or its combination can be set, the air that passes through in order to filtration in this breather line 816; Have a pipeline 815 in these cushion pad 814 inside again, this pipeline 815 can be communicated with the suction passage 8171 of this pedestal 817, by the length of these pipe-line 815 extensible these suction passages 8171.

See also shown in Figure 3, this movable part 810 is screwed together in this fixed block 8173, can make this upper module 800a and lower module 800b be combined as a removable pump 800, the bottom of this bobbin winder base 807 can be resisted against on this thin-film device 820, by the elasticity of elastic component on this 809, can push this thin-film device 820 distortion simultaneously with this time elastic component 811; When this coil 808 is switched on electric current, the mover group that this bobbin winder base 807 and coil 808 are constituted produces the active force of central shaft to C, when changing current direction, then can change the positive and negative direction of this active force, elastic force by elastic component 809 on this and this time elastic component 811 interacts simultaneously, can promote thin-film device 820 agitates up and down, form the pump aspiration phases, under the perfect condition, the elastic force of this last elastic component 809 and this time elastic component 811 is balance mutually, makes this thin-film device 820 keep uniform vibration amplitude.

See also shown in Figure 4ly, cooperate dressing 300 and absorbent material 900 to be applied in the negative pressure wound treatment system removable pump 800 of the present invention; This dressing 300 is arranged in the wound 500 of skin 400, can absorb dirts such as waste liquid in this wound 500 and purulence blood; Be provided with a water-proofing material 910 between this dressing 300 and this absorbent material 900, these water-proofing material 910 at least one masks have adhesiveness, can be positioned on the skin 400 at wound 500 places in order to stickup; Again this lower module 800b is arranged in this dressing 300, this cushion pad 814 fits on this water-proofing material 910, have airtight, leakproof, prevent that effects such as vibrations, bump, the pipeline 815 of these cushion pad 814 inside from then penetrating this water-proofing material 910 and inserting these dressing 300 inside; Again absorbent material 900 is arranged in outside the discharge route 8172 of this removable pump 800, on this absorbent material 900, cover a poromeric material 920 again, at last, this upper module 800a is screwed together on this lower module 800b, can constitutes a complete negative pressure wound treatment system.

Show in the present embodiment that this removable pump 800 connects foreign current with power line 8081, this power line 8081 is electrically connected at the coil 808 (being shown among Fig. 2 and Fig. 3) of this upper module 800a inside, after these power line 8081 input currents, this removable pump 800 is started working, and dirts such as waste liquid that this dressing 300 absorbed and purulence blood can be sucked in these removable pumps 800 through this pipeline 815, discharge through this discharge route 8172 again, absorb fully by this absorbent material 900.

In suction waste liquid process, by these water-proofing material 910 isolated dressing 300 and wounds 500, can avoid the backflow of waste liquid and purulence blood, and this water-proofing material 910 is adjacent to normal skin 400 and can keeps wound 500 negative pressure.When 920 of this poromeric materials can be avoided pump 800 suction waste liquids and purulence blood, gas caused this absorbent material 900 and the inflation swelling of poromeric material 920 gaps may bring patient's inconvenience and discomfort because of being drawn into partly simultaneously.And can make dressing 300 be communicated with the atmosphere air inlet by this breather line 816, but the excessive negative pressure in the balance wound 500, and can bring fresh air into to wound 500 and dressing 300, to suppress leukocytic phagocytosis function in anaerobic bacteria and the regeneration blood; When the waste liquid of this absorbent material 900 has absorbed when full, this upper module 800a (that is voice coil loudspeaker voice coil linear motor) can be pulled down, this lower module 800b, dressing 300 and absorbent material 900 abandoned in the lump handle and renew, reach motor recycling and cost-effective function.

Because this removable pump 800 adopts the voice coil loudspeaker voice coil linear motor, therefore can reduce number of parts, and can improve the vibration of membrane frequency to approaching supersonic high audio scope, to reduce the noise harmonic components that people's ear can be heard; Operating frequency is high more simultaneously, and motor power density is also just high more, and under same power requirements, the motor volume can be littler.As for its pressure-sensing part, adopt the indirect sensing in semi-closure loop (Semi-Close Loop) not have sensor control (Sensor-less Control), its output power curve sees also shown in Figure 5, briefly is illustrated as follows; Operate in the early stage in the time t1 with slow Starting mode and start to reduce the motor electric current (In-rush Current) of surging, then (t1～t2) allows reach greater than the negative pressure of setting in wound 500 cavitys motor with one section appropriate time of peak output work; Then do pulse width modulation electrical current control, to stablize back setting pressure (time t2～t3) with preestablishing the pairing Peak current of pressure; Then except do pulse width modulation electrical current control, simultaneously must change voice coil loudspeaker voice coil frequency adjustment flow if any leakage this moment, descend with compensation leakage rate and pressure, but the Current Control desired value do not change.Because the part of loop circuit has only currrent feedback (CurrentFeed-Back), do not utilize the direct feedback pressure value of pressure perceptron (Pressure Sensor) to come steady pressure, so be referred to as the indirect sensing principle in semi-closure loop; When waste liquid is full; pump can be because can't throw any liquid again into the electric current (t3～t4) and can't stabling current that raises; controller is with autostop and send caution afterwards, must waste liquid overfill warning circuit yet, and therefore can effectively simplify hardware design and reduce cost.

See also an embodiment's of the absorbent material that negative pressure wound treatment system of the present invention shown in Figure 6 adopts surface structure schematic representation, the characteristics of this absorbent material 900a are to have a plurality of projective structure 901a, these a plurality of projective structure 901a are arranged on the water-proofing material 910a, between these a plurality of projective structure 901a, form the runner 902a that is interconnected, on these a plurality of projective structure 901a, cover poromeric material 920a again; Whereby, can make waste liquid evenly flow to each projective structure 901a via runner 902a, improve the absorptivity of this absorbent material 900a, in addition, by the design of this runner 902a, can make this absorbent material 900a have preferable sheathed, can more fit tightly with patient's skin, be more suitable for being applied in complex-shaped hand and foot wound of limbs, in addition, can cut out the absorbent material that is fit to size and capacity according to wound size and assessment waste liquid discharge; Identical as for this water-proofing material 910a and the attainable effect of poromeric material 920a with this water-proofing material 910 shown in Figure 4 and poromeric material 920, repeat no more.

See also this absorbent material embodiment's shown in Figure 7 surface structure schematic representation, this embodiment is based on embodiment illustrated in fig. 6, this absorbent material 900b has a plurality of projective structure 901b, these a plurality of projective structure 901b are arranged on the water-proofing material 910b, between these a plurality of projective structure 901b, form the runner 902b that is interconnected, go up in this many projective structure 901b again and cover poromeric material 920b; The characteristics of present embodiment are with this lower module 800b one-body molded, and its purpose is waste liquid to be absorbed saturated this absorbent material 900b and suffers the lower module 800b of waste liquor contamination to abandon processing in the lump together with this, can improve the convenience of changing new product simultaneously.

In sum, removable pump provided by the present invention and the negative pressure wound treatment system that uses this pump, the detachable recycling of its pump motor, and the pump assembly that contacts with waste liquid can be abandoned the processing displacement; Should cooperate dressing and absorbent material to be applied in the negative pressure wound treatment system by removable pump, the wound waste liquid by dressing, pump after, directly absorb, realize shortening duct length, reduce the negative-pressure container volume, reduce purposes such as pump and battery module power with this by absorbent material; In addition; the many shortcomings that the present invention is directed to known Related product improve; the new design of individualized, microminiaturization, lightweight, low power consuming is proposed; provide ulcer trauma patient performance wearing type more excellent, that price is cheaper new system; enlarge of the persistency daily nursing use of its application whereby, and do not influence patient's normal work and rest to mobility injury (ambulatory patient) and all types of wounds.

Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.

Claims

1. a removable pump is characterized in that, comprises:

One upper module, it comprises:

One groups of motors connects foreign current, in order to power to be provided;

At least one elastic component of going up can be promoted and the elasticity to-and-fro motion by this groups of motors; And

One lower module is linked to this upper module below by removable connect mechanism, and it comprises:

One pedestal, it has at least one passage, can provide object to flow in this pedestal by this pedestal is outside, is discharged by this pedestal again;

At least one one-way valve is arranged at an end of this passage, refluxes in order to avoid object; One thin-film device, it is arranged in this pedestal;

At least one down elastic component, in order to this on the mutual reciprocating of elastic force of elastic component promote this thin-film device.

2. removable pump according to claim 1 is characterized in that, this groups of motors comprises:

One mover group, it comprises a bobbin winder base, is wound with coil outside this bobbin winder base, and this coil connects foreign current;

Stator group, it comprises a group of magnets and a magnetic conductance seat; This group of magnets is in order to produce magnetic force to this mover group; This magnetic conductance seat covers at this mover group and this group of magnets outside, in order to magnetic conduction.

3. removable pump according to claim 1 is characterized in that, the passage of this pedestal comprises:

At least one suction passage can enter this lower module inside by this pedestal outside for object; And

At least one discharge route can be for object by being discharged by this pedestal.

4. removable pump according to claim 3 is characterized in that, this one-way valve comprises:

At least one suction one-way valve is arranged at an end of this suction passage, enters this lower module in order to object to be provided by this suction passage, make object pass through this suction one-way valve after, can't be back in this suction passage again; At least one discharge one-way valve is arranged at an end of this discharge route, in order to provide object by this suction one-way valve by behind this discharges one-way valve, can enter this discharge route, makes object by this pedestal discharge, and can't be back in this pedestal again.

5. removable pump according to claim 2 is characterized in that this upper module more comprises a guide rail, and this guide rail is arranged at the bottom of this magnetic conductance seat, and this guide rail convexedly stretches in this bobbin winder base; Should go up elastic component is sheathed on outside this guide rail; This guide rail has an extended length direction, and this extended length direction is parallel to the reciprocal activity direction of the elasticity of elastic component on this.

6. removable pump according to claim 1 is characterized in that, this removable connect mechanism comprises:

One movable part is arranged at this upper module;

One fixed block is arranged at this lower module; Be provided with the screw thread that can screw togather mutually between this fixed block and this movable part, this fixed block can be screwed togather mutually with this movable part.

7. removable pump according to claim 6 is characterized in that:

This movable part is a ring bodies, and it is sheathed on the outside of this upper module, and this movable part has internal thread;

This fixed block is arranged on the pedestal of this lower module, and this fixed block has outside thread.

8. removable pump according to claim 2 is characterized in that this upper module more comprises a fixed base, forms one between this fixed base and this magnetic conductance seat and holds the space is set, and in order to hold this mover group is set; And this fixed base has a hole, and this hole allows that the bottom of this bobbin winder base convexedly stretches in outside this fixed base.

9. removable pump according to claim 8, it is characterized in that, the outer side wall of this bobbin winder base has a flange, and the external diameter of this flange is greater than this hole internal diameter of this fixed base, make this bobbin winder base can be constrained to lie in this hold be provided with in the space and unlikely disengaging this hold the space be set.

10. removable pump according to claim 2 is characterized in that, this group of magnets comprises that an internal magnetic ring and is sheathed on the outer magnetic ring of this internal magnetic ring outside, and this coil is located between this internal magnetic ring and this outer magnetic ring.

11. removable pump according to claim 4 is characterized in that:

This suction passage has a suction side and an end, and this suction one-way valve is covered in the end of this suction passage by the outside of this suction passage end;

This discharge route has an entry end and an exhaust end, and this discharge one-way valve is covered in the entry end of this discharge route by the inside of this discharge route entry end.

12. removable pump according to claim 1 is characterized in that this lower module more comprises a seat of honour, this seat of honour is provided with on this thin-film device, this thin-film device is constrained to lie in this lower module and this lower module of unlikely disengaging.

13. removable pump according to claim 1 is characterized in that, elastic component and this time elastic component are spring on this, and this goes up elastic component and this time elastic component is positioned at same axle center.

14. removable pump according to claim 1 is characterized in that, this pedestal bottom is provided with a cushion pad, this cushion pad is the opening shape of downward expansion, this cushion pad has a breather line, can provide air to enter this cushion pad by this cushion pad top, and be communicated to a dressing; And this cushion pad bottom has a pipeline, and this pipeline can be communicated with this suction passage of this pedestal.

15. a negative pressure wound treatment system is characterised in that, comprises:

One dressing is in order to be arranged in the wound;

One removable pump is arranged in this dressing, and in order to the suction negative pressure to be provided, it comprises:

One upper module, it comprises:

One groups of motors connects foreign current, can be in order to power to be provided; And

One pedestal, it has at least one passage, can for the waste liquid in the wound enter in this pedestal by this pedestal outside and can for waste liquid by and discharge by this pedestal;

At least one one-way valve is arranged at an end and/or the other end of this passage, refluxes in order to avoid waste liquid;

One thin-film device, it is arranged in this pedestal; And

At least one down elastic component, in order to this on the mutual reciprocating of elastic force of elastic component promote this thin-film device; And

One absorbent material is in order to absorb the waste liquid that this removable pump is discharged.

16. negative pressure wound treatment system according to claim 15 is characterized in that, this groups of motors comprises:

17. negative pressure wound treatment system according to claim 15 is characterized in that, this passage of this pedestal comprises:

At least one suction passage can enter this lower module inside by this pedestal outside for waste liquid; And

At least one discharge route, can for waste liquid by and discharge by this pedestal.

18. negative pressure wound treatment system according to claim 17 is characterized in that, this one-way valve comprises:

At least one suction one-way valve is arranged at an end of this suction passage, enters this lower module in order to waste liquid to be provided by this suction passage, make waste liquid pass through this suction one-way valve after, can't be back in this suction passage again;

At least one discharge one-way valve is arranged at an end of this discharge route, in order to provide waste liquid by this suction one-way valve by behind this discharges one-way valve, can enter this discharge route, makes waste liquid by this pedestal discharge, and can't be back in this pedestal again.

19. negative pressure wound treatment system according to claim 16 is characterized in that, this upper module more comprises a guide rail, and this guide rail is arranged at the bottom of this magnetic conductance seat, and this guide rail convexedly stretches in this bobbin winder base; Should go up elastic component is sheathed on outside this guide rail; This guide rail has an extended length direction, and this extended length direction is parallel to the reciprocal activity direction of the elasticity of elastic component on this.

20. negative pressure wound treatment system according to claim 15 is characterized in that, this removable connect mechanism comprises:

One movable part is arranged at this upper module;

21. negative pressure wound treatment system according to claim 16 is characterized in that, this group of magnets comprises that an internal magnetic ring and is sheathed on the outer magnetic ring of this internal magnetic ring outside, and this coil is located between this internal magnetic ring and this outer magnetic ring.

22. negative pressure wound treatment system according to claim 17 is characterized in that:

23. negative pressure wound treatment system according to claim 15 is characterized in that, this pedestal bottom is provided with a cushion pad, this cushion pad is the opening shape of downward expansion, this cushion pad has a breather line, can provide air to enter this cushion pad by this cushion pad top, and be communicated to this dressing; And this cushion pad bottom has a pipeline, and this pipeline can be communicated with this suction passage of this pedestal.

24., it is characterized in that this absorbent material is coated in the poromeric material according to claim 15 a described negative pressure wound treatment system; And be provided with a water-proofing material between this dressing and this absorbent material, be back to wound in order to intercept waste liquid.

25. according to claim 15 a described negative pressure wound treatment system, it is characterized in that this absorbent material has many projective structures, between these many projective structures, form the runner that is interconnected.