CN103933624B - Medical negative pressure drainage device - Google Patents
Medical negative pressure drainage device Download PDFInfo
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- CN103933624B CN103933624B CN201410208175.1A CN201410208175A CN103933624B CN 103933624 B CN103933624 B CN 103933624B CN 201410208175 A CN201410208175 A CN 201410208175A CN 103933624 B CN103933624 B CN 103933624B
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- Prior art keywords
- inner pressurd
- pressurd vessel
- pipe joint
- outer container
- container
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- A61M1/0011—
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/60—Containers for suction drainage, adapted to be used with an external suction source
- A61M1/604—Bag or liner in a rigid container, with suction applied to both
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/71—Suction drainage systems
- A61M1/74—Suction control
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- External Artificial Organs (AREA)
Abstract
A kind of medical negative pressure drainage device, comprise the hard outer container that can open and seal and film inner pressurd vessel, on outer container, there is the hole of the use of bleeding, with the difference of prior art be: the pipeline or the pipe joint that connect with inner pressurd vessel outwards penetrate the hole outer container from the inside of outer container together with elastic sealing element, elastic sealing element seals gap between the two, pipe joint passes groove in part, in groove, card has obstacle to prevent from coming off, directly fuse with inner pressurd vessel the pipe joint being connected and have soft and hard two kinds, inside there is check valve, inner pressurd vessel and outer container are isolated mutually, tap is arranged at inner pressurd vessel bottom, in outer container, passing into air discharges drain. benefit is that the lower and inner pressurd vessel of inner pressurd vessel manufacturing cost can use for several times with outer container and can for a long time repeatedly use, be difficult for polluting, reduce total use cost, be convenient to nurse automation, can alleviate medical worker's labour intensity with the type of electronic-controlled installation and pneumatic actuator.
Description
Technical field:
The invention relates to the improvement of medical negative pressure drainage device.
Background technology:
CN200820021908 Patent Application Publication a kind of medical negative pressure drainage device, it is so to describe: bandThe negative pressure drainage device that has isolation pocket, is characterized in that: comprise aspirator bottle, bottle cap, isolation pocket, drainage tube, and aspirator, air-breathingOn bottle, be provided with bottle cap, bottle cap is threaded with aspirator bottle, and the opening part on bottle cap is connected with the drainage tube with rubber stopper, drainagePipe one end is led to outside bottle, and one end is led in bottle, and the one end in drainage phial is connected with isolation pocket, and communicating pipe is communicated with aspirator bottle and takes outInhale device, on communicating pipe, be provided with one-way vent valve. Sum up with similar language and be exactly; Bottle cap is threaded with aspirator bottle and forms oneThe outer container of individual sealing, drainage tube connects a soft inner pressurd vessel (isolation pocket), and drainage tube is through rubber stopper, and rubber stopper clogs bottleMouthful.
The major defect that this structure exists is, isolation pocket will be from bottleneck be put into rubber stopper beyond the Great Wall again, bottleneck will compareLarge and be inconvenient to operate, bottle cap is threaded with aspirator bottle to cause and opens difficulty, and drainage tube does not connect check valve and pollutesRisk, inner pressurd vessel can only disposablely use.
CN96237102 Patent Application Publication another medical negative pressure drainage device, general configuration is to have and can holdBe subject to the outer container and soft being easily out of shape and and draining fluids that in the use of atmospheric pressure, do not contact with draining fluids under air pressureContact inner pressurd vessel, outer container is cup-shaped, inner pressurd vessel is made up of two parts, top be a hard can be withstand voltage diameter withThe upper cover that cup-shaped outer container is approaching, bottom is the opening sack that a high molecular polymer film is made, open-bag subring is enclosed withinOn cover on outstanding flange, cover flange coordinates with the opening of cup-shaped outer container, has an annular seal ring, annular seal ringAxial seal upper cover and cup-shaped outer container, the middle and upper part of outer container wall of cup has pipe joint to connect outer container inside, on inner pressurd vesselCovered two pipe joints, one of them pipe joint connects drainage tube, and another pipe joint connects by three-way pipeline jointThe pipe joint of the middle and upper part of logical outer container wall of cup, three-way pipe a joint connect negative pressure source. The major defect of this structureBe disposable inner pressurd vessel because there is hard upper cover to cause cost higher, outer container is because have gas to be communicated with event with inner pressurd vesselLikely pollute, so also should not repeatedly use, simultaneously pour out more difficultly because of drainage-fluid in inner pressurd vessel, easily pollute behaviourMake complexity, also easily pollute negative pressure source, after generally filling, have to abandon, therefore overall use cost is higher.
The object of the invention is: the some or all of major defect that overcomes existing apparatus, provides a kind of use costLow, inner pressurd vessel and outer container can be nonexpondable, are convenient to the negative pressure drainage device of automation mechanized operation.
Definition: can bear herein atmospheric pressure under atmospheric pressure, do not produce remarkable distortion and use in not with drainageThe container of liquid contact is called outer container, and under air pressure, the easy container being out of shape and contact with draining fluids is called inner pressurd vessel.
Summary of the invention:
Medical negative pressure drainage device of the present invention, comprises not contacting with draining fluids in the use that can bear atmospheric pressureOuter container be the inner pressurd vessel contacting with draining fluids in the soft use that can not bear atmospheric pressure at least partly, inner pressurd vessel isOnly, by pipeline or pipe joint and the extraneous gas-tight container communicating, on outer container, have for the hole of bleeding, outside inner pressurd vessel is placed onInternal tank, inner pressurd vessel can separate with outer container, is: the pipeline being connected with inner pressurd vessel or pipe with the difference of prior artRoad joint outwards penetrates the hole outer container from the inside of outer container together with elastic sealing element, elastic sealing element closed conduitOr gap between the hole of passing through for pipeline or pipe joint on pipe joint and outer container.
In the part that passes outer container hole, being provided with obstacle with the direct-connected pipe joint of inner pressurd vessel stops pipeline to connectHead is deviate from from hole, and there is groove one end that pipe joint is connected with pipeline, and in groove, card has obstacle, the other end of pipe jointThe inner pressurd vessel made from soft high molecular polymer film fuses together.
Made by soft high molecular polymer with the direct-connected pipe joint of inner pressurd vessel and be combined into one with elastic sealing elementBody, the inner pressurd vessel that one end of pipe joint and soft high molecular polymer film are made fuses together, and pipe joint is in additionOne end and pipeline fuse together, and there is hard bushing pipe the inside of pipe joint, and there is groove one end that pipe joint is connected with pipelineOr there is the barb-like obstacle with pipe joint one.
Outer container is at least made up of container body and container cover two parts, flexible close between container body and container cover two partsSeal ring or elastic sealing gasket, container body is connected by buckle with container cover, in container body bottom and container cover, has for pipeline and connectsThe hole that head passes through, except pipe joint place being connected with inner pressurd vessel, the wall of inner pressurd vessel is by soft high molecular polymer film systemBecome, inner pressurd vessel is all contained in outer container except the part of outer container is stretched out in pipe joint, is connected with the top of inner pressurd vesselIn pipe joint, be connected with check valve, inner pressurd vessel is not communicated with mutually with outer container, and the top of inner pressurd vessel and bottom are all connected with pipeRoad joint, is connected with check valve in the pipe joint being connected with the bottom of inner pressurd vessel, and outer container passes into atmosphere or compressed air makesDrain is discharged inner pressurd vessel.
On the wall of inner pressurd vessel, be pasted with the prestressed flexure strip of bending.
In the pipe joint being connected with the top of inner pressurd vessel, be connected with check valve, two check valve series windings use, float weightPower formula check valve and duck-beak type check valve share same shell.
Check valve is installed in the inside with the direct-connected pipe joint of inner pressurd vessel.
Pipe joint is made up of hard high molecular polymer, on the external cylindrical surface coordinating with outer container aperture, has groove,Flexible sealing ring in groove, one end that pipe joint connects drainage pipe is plug-in type or flared type or bite type interfaceShape, there is hexagon flange the position contacting with outer container in the bottom of pipe joint, and the corresponding positions of outer container is equipped with and its phaseThe depression coordinating, the part that passes outer container in pipe joint has a groove, and there is the grafting of plug-in type hose coupling the top of grooveThe hickey of mouth or flared type or straight thread type pipeline connector, the diameter ratio of the nut of flared type or straight thread type pipeline connectorThe diameter in outer container hole is little.
A stop valve is housed on the air inlet of bleeding of outer container, and an outlet of stop valve is public mouthful of hydraulic quick couplerShape.
With microprocessor and weight sensor, weight sensor is the form of desk-top electronic scale, is set with inner pressurd vesselOuter container is placed in frame, and frame is placed on the scale pan of desk-top electronic scale, has the outer container of control to bleed or the electricity of air inlet in frameMagnet valve.
Outer container is connected with the guide's air-operated solenoid valve that can set working value, guide's air-operated solenoid valve main valve by pipelineDelivery outlet connect pneumatic actuator, in frame with multiple pneumatic actuators, the version of pneumatic actuator be withThe soft pipeline that inner pressurd vessel or outer container connect between anvil block and pressure head, the single-acting diaphragm cylinder band dynamic head of spring resetOpen or press from both sides and close soft pipeline.
The bottom of inner pressurd vessel is connected with pipe joint, and the bottom of outer container has for its hole of passing through, with the bottom of inner pressurd vesselIn the pipe joint connecting, be connected with check valve, external container has a T joint that connects inner pressurd vessel and outer container outsideHead, this tee pipe coupling connects one section of flexible pipe, and this flexible pipe connects a termination the closed pipe joint of closing cock or cap, rowWhile going out drain, the closed pipe joint in termination connects an inlet air filtration and air extractor, and this device comprises another one threeConnection for bbreather pipe, one of them joint connects negative pressure source by stop valve, and another one joint tape splicing has the filter of stop valve, filtersDevice or stop valve lead to atmosphere.
Invention effect:
The inner pressurd vessel manufacturing cost of medical negative pressure drainage device of the present invention is lower, is difficult for polluting, and inner pressurd vessel can be for several timesUse and outer container can for a long time repeatedly use, and have reduced total use cost. With electronic-controlled installation and pneumatic execution machineThe type of structure can alleviate medical worker's labour intensity.
Brief description of the drawings:
Accompanying drawing is by the longitudinal sectional view of the negative pressure drainage device of the present invention's design
In figure: 1, pipe joint 2, stop valve 3, elastic sealing element 4, container cover 5, elastic sealing gasket 6, elasticity are closeSeal ring 7, snap close 8, container body 9, inner pressurd vessel 10, check valve 11, barb 12, compacting ring 13, duck-beak type check valve 14,Retainer 15, flap 16, air gauge interface 17, valve port pad 18, obstacle 19, pipeline
Detailed description of the invention:
The present invention according to requirements difference has multiple different form, for example the front formula of portable, bed, soft pipeline jointType, rigid tubing joint-type, full isolated form, part isolated form, with or without automatically working platform, not interchangeable drainage tube not interchangeableDrainage tube etc.;
Example 1, referring to accompanying drawing, outer container is made with glass or transparent high molecular polymer, by the container cooperatively interactingBody and container cover two parts composition, flexible sealing between the two, elastic sealing elements can be radially or axial elasticity closeSeal ring or elastic sealing gasket, or both have concurrently, and the connected mode between container body and container cover has multiple, generally connects with snap closeConnect, also can connect by the mode that existing common elastic pressuring plate adds snap close, lock in the time that container cover is made with high molecular polymerButton can also together inject with container cover, and the form of similar so-called happy button cup, when container cover is made with glass or hard materialTime can, at ring of container cover upper ring cap, on ring, be evenly equipped with several snap closes, open container body and container cover after snap close and can divideFrom.
Inner pressurd vessel is connected with conduction hose by pipe joint, with the direct-connected pipe joint of inner pressurd vessel from outer containerInside outwards penetrates the hole on outer container together with elastic sealing element, and inner pressurd vessel is put into outer container, must open outer containerCan take out inner pressurd vessel.
Have hard and soft two kinds of forms with the direct-connected pipe joint of inner pressurd vessel, hard pipe joint is by hard high scoreSub-polymer is made, and makes groove at the external cylindrical surface coordinating with outer container aperture, puts elastic seal ring in groove, and elasticity is closeSeal also can replace with flexible cover, and one end of this kind of hard pipe joint and soft high molecular polymer film are madeInner pressurd vessel merges, and pipe joint connects one end of drainage tube and can make the shape of common plug-in type hose coupling and also canTo make the shape of flared type or straight thread type pipeline connector, while making the shape of flared type or straight thread type pipeline connector, for preventingPipe joint rotation while turning round nut, hexagon flange, container cover are made in the position contacting with container cover in the bottom of pipe jointRelevant position make the depression matching with it. The part that passes outer container in pipe joint has a groove, card upper in grooveIndividual U-shaped spring clip is as obstacle. There is interface or flared type or the bite type of plug-in type hose coupling the top of grooveThe hickey of pipe joint, the diameter that the diameter of the nut of flared type or straight thread type pipeline connector cans be compared to outer container hole most omitsLittle, to can, through the hole of outer container, can not connect at the scene like this, benefit is can avoid polluting.
Isolation mutually between inner pressurd vessel and outer container in this example, between inner pressurd vessel and outer container, obstructed piping is communicated with, canGuarantee mutually not produce pollution, the gas when preventing outer container accidental gas leakage or pass into air in inner pressurd vessel and drain are at pipeIn road, produce adverse current, on the pipeline passing through at drain, be connected with check valve.
The inwall of hard pipe joint can be used as the outer sleeve of check valve, and check valve is encapsulated in pipe joint inside.
Soft pipe joint is made and is integrated together with elastic sealing element by resilient soft high molecular polymerInject, elastic sealing element shows as the several circular protrusions in pipe joint, and such pipe joint is played pipeline simultaneously and connectThe effect of head and seal for strengthening sealing place pressure, is provided with hard bushing pipe in pipe joint, and hard bushing pipe can be stainlessSteel is made also and can be made up of the high molecular polymer of hard, if can also use the shell of check valve with the type of check valveReplace. The inner pressurd vessel that one end of soft pipe joint and soft high molecular polymer film are made fuses together, pipe jointOther one end and pipeline fuse together, can heat fuse also and can fuse by chemistry.
Figure middle and lower part has shown a kind of and direct-connected soft pipe joint of inner pressurd vessel, has and its one in pipe jointBarb-like obstacle, stop that pipe joint comes off from the hole of outer container, the fluted and longitudinal cross recess in barb place is with sideJust barb is out of shape to axis direction, and the shell of check valve plays the effect of hard bushing pipe simultaneously.
What figure middle and upper part showed is the shape of hard pipe joint, and soft pipe joint can be also this kind of shape, slightlyDo not exist together is that soft pipe joint is made and is integrated together with elastic seal ring by resilient soft high molecular polymerInject, check valve place increases a check valve shell as hard bushing pipe.
The check valve connecting on drainage pipe can be selected the medical lists such as existing float gravity type, duck-beak type or diaphragm typeTo valve, can be contained in outer container outside and also can be encapsulated in the inside of inner pressurd vessel, can utilize with inner pressurd vessel direct-connected hardThe inwall of pipe joint as the shell of check valve, check valve is in the inside of pipe joint, when soft pipe joint, pipeline connectsSleeve-shaped is made in the bottom of head, is enclosed within the outside of check valve.
For improving reliability, can use by two check valve series windings a float gravity-held check valve and a duck-beak typeCheck valve shares same shell, and concrete structure is: the porose cylindrical sleeve tubular enclosure in top is overlapped successively and had valve port pad, protectsHold frame, duck-beak type check valve, compacting ring, these part axials are pressed together, and retainer is tubulose, and tube wall is stretched to centerChu Ji road rib makes the float-type flap of hollow ball-shape remain on center, and while having adverse current, hollow ball compresses valve port, during without adverse currentHollow ball falls by gravity, and as shown in FIG., when drain flows down, duckbilled opens duck-beak type check valve, duckbilled closure oppositely time.
The wall of inner pressurd vessel is made up of soft high molecular polymer film, and two openend heat of tubular film merge oneRise, also merge with pipe joint heat, generally, merging in the radial direction, also can in pipe joint, make protruding simultaneouslyEdge, heat merges in the axial direction, now merges and is between flange and the barrel of tubular film.
The hole that supplies pipeline or pipe joint to pass through is arranged at the bottom of outer container, and the bottom of inner pressurd vessel is connected with pipe joint, connectsConnect mode identical with the pipe joint on top, the pipe joint that inner pressurd vessel bottom connects passes the hole of outer container bottom, drainAfter filling to a certain extent, in outer container, passing into atmosphere or compressed air makes drain discharge inner pressurd vessel.
Certainly, inner pressurd vessel also can be made only disposable, and now the bottom of outer container can not have hole.
In the pipe joint of inner pressurd vessel bottom, check valve also can be housed, this check valve stops outside air to enter contentDevice.
When every day use, inner pressurd vessel injects a certain amount of clean air, and the volume of inner pressurd vessel changes with gas pressure in outer containerBecome, when pressure balance in inner pressurd vessel and outer container, inner pressurd vessel equates with the air pressure in outer container, can regulate in outer containerAir pressure in air pressure indirect regulation inner pressurd vessel.
In the time that high negative pressure uses, the air capacity of injecting in inner pressurd vessel is very little, and the air pressure in inner pressurd vessel may be not enough toExpansion power is provided, and now on the wall of inner pressurd vessel, part is pasted with two with the prestressed flexure strip of bending, attaching sideFormula can be that adhesive sticker directly attaches, also can be on the wall of inner pressurd vessel two films of heat seal, with the prestressed bullet of bendingProperty sheet insert the attaching mode in the interlayer between wall and film, two are staggered relatively with the prestressed flexure strip of bending,Flexure strip is flat under atmospheric pressure at ordinary times, and in the time that the air pressure in outer container reduces, flexure strip bending, forces inner pressurd vessel to openProduce high negative pressure.
In the time making portable product, on the air inlet of bleeding of outer container, can fill a stop valve, stop valveOutlet is the form of public mouthful of hydraulic quick coupler, has female mouthful of hydraulic quick coupler on air extractor, fast with Water Inlet of Washing MachineChanging-over is similar, and both bleed after connecting, and after having bled, close stop valve, then separate with air extractor.
Example 2 is essentially identical transiens products described in the second in a kind of and background technology, and structure does not exist togetherTo make in the bottom of cup-shaped outer container for the pipeline or the pipe joint that are connected with inner pressurd vessel to pass outwards through from the inside of outer containerHole, with inner pressurd vessel connect pipeline or pipe joint appearance from the inside of outer container outwards penetrates together with elastic sealing elementHole on device, between the hole that the confession pipeline on elastic sealing element closed conduit or pipe joint and outer container or pipe joint are passed throughGap. This pipe joint can connect one section of flexible pipe or connect a discharge opeing check valve, discharges the good of drain from bottomPlace avoids polluting than being easier to. Be connected one section of flexible pipe in tee pipe coupling place that connects inner pressurd vessel and outer container, this flexible pipe connectsConnect the pipe joint of a termination with closing cock or cap, when flow diverter normally uses, this termination is sealed. Discharge drainTime this pipe joint connect an inlet air filtration and air extractor, this device comprises another tee pipe coupling, one of themJoint connects negative pressure source by valve, the valvular filter of another one joint tape splicing, and valve or filter connect atmosphere. Discharge is drawnWhen stream thing, first press from both sides and close described flexible pipe, more described inlet air filtration is connected to and the dress of bleeding with the pipe joint of closing cock or cap in terminationPut, decontrol folder close place, outer container all communicates with atmosphere by filter with inner pressurd vessel, now can discharge drain, drained after,Close the valve of filter, open the valve that connects negative pressure source and bleed, the rear folder closed end headband of having bled has the pipe of closing cock or capThe flexible pipe of joint, separates termination with inlet air filtration with the pipe joint of closing cock or cap with air extractor, then will fill in orCap stopper is lived or is covered, and after this can normally use. The benefit of one that this structure is brought is to want in the basic satisfied performance of improvingWhen asking, can make full use of existing mold and material.
For improving automatization level, alleviate nurse job amount, be provided with automatically working platform, automatically working platform bandHave microprocessor and weight sensor, microprocessor control solenoid directional control valve, make its timing or according to drainage weight and outward holdThe situation follow procedure actions such as the pressure in device, can adjust the pressure in outer container at any time. Automatically working platform control systemFormed by the electronic system upgrading on electronic scale, microprocessor can with electronic scale on microprocessor use same coreSheet, output input and display system all with electronic scale on share, can store and show relevant information, be preferably with wirelessTransport module, the communication whether drainage flow, drainage are interrupted etc. to drainage system, to nurse station, docks with digital hospital.
Automatically working platform has the frame of a shaped as frame, and the outer container that is set with inner pressurd vessel is placed on the frame of shaped as frame frameIn, weight sensor is the form of desk-top electronic scale, shaped as frame frame is placed on the scale pan of desk-top electronic scale, controls outer container air inletOr the solenoid directional control valve of bleeding is in shaped as frame frame, solenoid directional control valve can select the 3-position-3-way electromagnetism of a meta sealing to changeTo valve, one of them interface connects the gas port that is drawn into of outer container, and one, two interfaces of an other side connect negative pressure source, and another connects greatlyGas. The 3-position-3-way solenoid directional control valve of this meta sealing also can combine with two normal off two-position two-way solenoid valves. ?Magnetic valve connects open to atmosphere valve position, and inner pressurd vessel is discharged drain.
For increasing safety coefficient, maybe can save a check valve, can be with multiple pneumatic actuators, pneumatic execution machineThe version of structure be the soft pipeline that is connected with inner pressurd vessel between anvil block and pressure head, the single-acting diaphragm cylinder of spring resetOpen or press from both sides with dynamic head and close soft pipeline. Pneumatic actuator is fixed on the frame of shaped as frame frame, controls pneumatic actuatorSolenoid directional control valve can select a normal off two position, three-way electromagnetic change valve, a port on it connects the nonoculture of spring resetWith diaphragm cylinder, one of two other mouthful connects compressed air cylinder, and another connects atmosphere. For improving functional reliability, not because circuitFault exerts an influence, and aforementioned normal off two position, three-way electromagnetic change valve can be selected the air-powered electromagnetic double acting that can set working valueGuide's Pneumatic solenoid valves, the air inlet of pneumatic pilot-valve by tee pipe coupling connect on outer container connect barometricMouthful, the delivery outlet of guide's air-operated solenoid valve main valve connects the single-acting diaphragm cylinder of spring reset, when outer container internal pressure surprisingly surpassesWhile crossing setting value, pneumatic pilot-valve forces main valve connection to make two single-acting diaphragm cylinders enter compressed air, by top drainageWhen closing, piping clip decontrols the pipeline of bottom discharge opeing. The difference of two pneumatic actuators is that what close drainage pipe is straight to folderPressure head, decontrol bottom discharge opeing pipeline be the pressure head with eave tile, eave tile squeezing tube. Two magnetic valves of microprocessor controlWhile making single-acting diaphragm cylinder enter compressed air, outer container also enters air simultaneously, and inner pressurd vessel is discharged drain.
Negative pressure source can be motor-driven can be also manual.
On outer container, have the barometric interface of special connection, connect and have air gauge, air gauge is preferably digitized, so thatIn coordinating with microprocessor. In the time that the air pressure in outer container exceedes predetermined value with the increase of drainage flow, control magnetic valve and connect negative pressureBleed or discharge drain in source.
Inner pressurd vessel top can be connected with many pipelines or pipe joint, has corresponding in the container cover of corresponding outer containerPort, convenient series winding uses, for example, when the constant continuous negative pressure drainage in thoracic cavity.
In the time not allowing of short duration termination drainage, drainage is crossed three-way pipe with device for cleaning pipeline and is connected two cover negative pressure drainages with soft pipelineDevice, opens an other soft pipeline when folder closes wherein a soft pipeline, and two covering device rotations are used. Automation shouldUsed time, in the frame of aforementioned automation platform, set up magnetic valve and pneumatic actuator.
Claims (7)
1. a medical negative pressure drainage device, comprises the outer container not contacting with draining fluids in the use that can bear atmospheric pressureBe the inner pressurd vessel contacting with draining fluids in the soft use that can not bear atmospheric pressure at least partly, inner pressurd vessel is only to pass throughPipeline or pipe joint and the extraneous gas-tight container communicating, have on outer container for the hole of bleeding, and inner pressurd vessel is placed in outer containerPortion, inner pressurd vessel can separate with outer container, it is characterized in that: the pipeline being connected with inner pressurd vessel or pipe joint are in outer containerPortion outwards penetrates the hole on outer container together with elastic sealing element, elastic sealing element closed conduit or pipe joint and outer containerOn the hole of passing through for pipeline or pipe joint between gap, passing outer container with the direct-connected pipe joint of inner pressurd vesselThe part in hole is provided with obstacle and stops pipe joint to be deviate from from hole, and there is groove one end that pipe joint is connected with pipeline, ditchCard has obstacle in groove, and the inner pressurd vessel that the other end of pipe joint and soft high molecular polymer film are made fuses together.
2. medical negative pressure drainage device according to claim 1, is characterized in that: outer container is at least by container body and containerLid two parts composition, flexible sealing ring or elastic sealing gasket, container body and container cover between container body and container cover two partsConnect by buckle, in container body bottom and container cover, have the hole of passing through for pipe joint, except the pipeline being connected with inner pressurd vesselOutside joint, the wall of inner pressurd vessel is made up of soft high molecular polymer film, and inner pressurd vessel stretches out outer container except pipe jointA part is outer to be all contained in outer container, in the pipe joint being connected, is connected with check valve with the top of inner pressurd vessel, inner pressurd vessel andOuter container is not communicated with mutually, and the top of inner pressurd vessel and bottom are all connected with pipe joint, and outer container passes into atmosphere or compressed airMake drain discharge inner pressurd vessel.
3. medical negative pressure drainage device according to claim 1, is characterized in that: connect with the direct-connected pipeline of inner pressurd vesselHead is made and is integrated with elastic sealing element by soft high molecular polymer, one end of pipe joint and soft high molecular polymerizationThe inner pressurd vessel that thing film is made fuses together, and other one end and the pipeline of pipe joint fuse together, in pipe jointThere is hard bushing pipe in portion, and there is groove one end that pipe joint is connected with pipeline or has with the barb-like of pipe joint one and stopsThing.
4. medical negative pressure drainage device according to claim 1, is characterized in that: on the wall of inner pressurd vessel, be pasted withBending prestressed flexure strip.
5. medical negative pressure drainage device according to claim 1, is characterized in that: the pipeline being connected with the top of inner pressurd vesselOn joint, be connected with check valve, two check valve series windings use, and float gravity-held check valve and duck-beak type check valve share sameIndividual shell, check valve is installed in the inside with the direct-connected pipe joint of inner pressurd vessel.
6. medical negative pressure drainage device according to claim 2, is characterized in that: with microprocessor and weight sensingDevice, weight sensor is the form of desk-top electronic scale, and the outer container that is set with inner pressurd vessel is placed in frame, and frame is placed on desk-top electricityOn the scale pan that son claims, in frame, there is the outer container of control to bleed or the magnetic valve of air inlet.
7. medical negative pressure drainage device according to claim 2, is characterized in that: the bottom of inner pressurd vessel is connected with pipeline and connectsHead, the bottom of outer container has for its hole of passing through, is connected with check valve, outside with the bottom of inner pressurd vessel in the pipe joint being connectedExternal container has a tee pipe coupling that connects inner pressurd vessel and outer container, and this tee pipe coupling connects one section of flexible pipe, this flexible pipeConnecting a termination has the closed pipe joint of closing cock or cap, and while discharging drain, the closed pipe joint in termination connects oneIndividual inlet air filtration and air extractor, this device comprises another one tee pipe coupling, one of them joint connects by stop valveNegative pressure source, another one joint tape splicing has the filter of stop valve, and filter or stop valve lead to atmosphere.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410208175.1A CN103933624B (en) | 2014-05-16 | 2014-05-16 | Medical negative pressure drainage device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410208175.1A CN103933624B (en) | 2014-05-16 | 2014-05-16 | Medical negative pressure drainage device |
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| CN103933624A CN103933624A (en) | 2014-07-23 |
| CN103933624B true CN103933624B (en) | 2016-05-18 |
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| CN111603628B (en) * | 2020-07-17 | 2024-09-03 | 刘燕 | Blood storage device for extracorporeal circulation of heart operation |
| CN111921023A (en) * | 2020-08-14 | 2020-11-13 | 辽宁省肿瘤医院 | Suction device for abdominal surgery |
| CN112545899A (en) * | 2020-12-26 | 2021-03-26 | 黑龙江省医院 | Quick nursing lung-heat-clearing sputum discharging device for respiratory medicine |
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| US3780738A (en) * | 1971-12-08 | 1973-12-25 | Deaton Medical Co | Method and apparatus of medical suction |
| DE3218561C2 (en) * | 1982-05-17 | 1988-08-18 | Günter H. Dr.-Ing. 8035 Gauting Marx | Device for taking up and reinfusing blood |
| GB2207709A (en) * | 1987-07-28 | 1989-02-08 | Clinimed Ltd | Fluid collection and transportation device |
| CH686027A5 (en) * | 1991-07-26 | 1995-12-15 | Elp Rochat | Unit of recovery and blood filtration. |
| CN201194956Y (en) * | 2008-05-05 | 2009-02-18 | 潘伟 | Negative-pressure draining device with isolation bag |
| CN101961511A (en) * | 2010-06-08 | 2011-02-02 | 苏州新区华盛医疗器械厂 | Negative pressure drainage device |
| CN202724433U (en) * | 2011-12-06 | 2013-02-13 | 苏州陆氏塑业有限公司 | A negative pressure drainage device |
| CN103418044A (en) * | 2013-08-29 | 2013-12-04 | 苏州市亚新医疗用品有限公司 | Combined negative pressure drainage device |
-
2014
- 2014-05-16 CN CN201410208175.1A patent/CN103933624B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN103933624A (en) | 2014-07-23 |
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