CN209695896U - Negative pressure drainage device - Google Patents
Negative pressure drainage device Download PDFInfo
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- CN209695896U CN209695896U CN201820556673.9U CN201820556673U CN209695896U CN 209695896 U CN209695896 U CN 209695896U CN 201820556673 U CN201820556673 U CN 201820556673U CN 209695896 U CN209695896 U CN 209695896U
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- negative pressure
- upper cover
- elastic
- drainage device
- pressure drainage
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Abstract
The utility model discloses a kind of negative pressure drainage devices, including upper cover and lower cover, elastic negative pressure chamber is formed by the elastic shell of an adjustable volume between the upper cover and the lower cover, draining hole and exhaust outlet are configured in the upper cover, the draining hole is connected to by control valve with drainage tube, the exhaust outlet is configured with sealing valve, and the upper cover offers connection elastic negative pressure chamber and external intercommunicating pore, and the intercommunicating pore is covered with elastic film.The utility model is intended to be recessed by the pressure official post elastic film of the intracavitary opposite outer of elastic negative pressure, and then sufferer or medical staff is made to observe the working condition of negative pressure drainage device in real time, improves safety and service efficiency.
Description
Technical field
The utility model relates to medical instruments fields, and in particular to a kind of negative pressure drainage device.
Background technique
Negative pressure wound surface treatment technology is developed in recent years for treating a new technology of the surface of a wound, it utilizes biology
Semi-permeable membrane makes open surface of a wound closing, and certain negative pressure is generated using special negative pressure machine, acts on debridement by drainage tube and dressing
The surface of a wound afterwards.Current research has shown that the therapy can speed up the blood circulation of wound site, remarkably promotes new vessels entrance
The surface of a wound stimulates the growth of granulation tissue, sufficiently drains, and mitigates oedema, reduces pollution, inhibits bacterial growth, can directly accelerate
Wound healing, or repair and create conditions for operation.It is a kind of efficient, simple, economic, the pure physical therapy of wound healing.
Existing medical negative pressure drainage device includes upper cover and lower cover, and upper cover is provided with draining hole and discharge port, and draining hole connects
It is connected to drainage tube, upper cover edge is equipped with cingulum, and cingulum is equipped with closing discharge port snap-fastener.The edge of upper cover passes through with lower cover edge
Film connects to form a drainage space (drain enters under the action of negative pressure in the space), and bullet is equipped between upper cover and lower cover
Spring before being drained, squeezes upper cover and lower cover, the air in confined space is squeezed out, so that in negative in sealing space
Pressure condition tips snap-fastener in discharge port in, when being drained, drainage tube is injected to the drain site of patient, in sealing space
Under the action of negative pressure, drain is inhaled into sealing space, after drainage, takes out snap-fastener, at this point, upper cover and lower cover are squeezed,
Drain in enclosure space is discharged from discharge port.
Hold that the medical negative pressure drainage device stated is in use, and there are the following problems:
1, in drainage process, after drain enters drainage space so that the pressure in drainage space increases, when pressure with
It when ambient pressure is identical, then can not drain, however whether patient is but and can not clear identical as ambient pressure and can not draw
Stream, is replaced so that medical staff can not be called in time.
2, medical staff will usually drain the seal cap at Tube Drain end when drainage tube to be injected to the drain site of patient
It opens, then injects drain site, however seal cap opening be will cause into ambient atmos and entered in sealing space from drainage tube,
So that air pressure increases in sealing space, the effect of negative pressure drainage is affected.
Utility model content
The purpose of the utility model is to overcome or slow down part at least the above disadvantage, a kind of negative pressure drainage is provided hereby
Device, including upper cover and lower cover, it is negative by the elastic shell composition elasticity of an adjustable volume between the upper cover and the lower cover
Chamber is pressed, is configured with draining hole and exhaust outlet in the upper cover, the draining hole is connected to by control valve with drainage tube, the exhaust
Mouth is configured with sealing valve, and the upper cover offers connection elastic negative pressure chamber and external intercommunicating pore, and the intercommunicating pore is covered with bullet
Property film.
Preferably, the elastic film is the transparent membrane that there is bar shaped lines on surface.
Preferably, the surface of the elastic film is fitted with pressure-strain piece, in the upper lid surface configuration circuit plate, institute
Stating circuit board arrangement has there are three bridge resistor, the pressure-strain piece and the composition bridge circuit of bridge resistor described in three,
The bridge circuit is coupled with amplifying circuit, and the amplifying circuit is coupled with comparison circuit, and the comparison circuit is coupled with light
Warning circuit.
Preferably, Yu Suoshu elastic negative pressure is intracavitary is configured with reset spring, and the both ends of the reset spring are separately connected institute
State upper cover and the lower cover.
Preferably, the upper cover extends to the part outside the elastic shell configured with limit threaded hole, the limit spiral shell
Pit is threaded with length direction limit threaded post identical with reset spring deformation direction, the limit threaded post phase
The other end and the lower cover to the upper cover extend to the rotation of the part outside the elastic shell and connect.
Preferably, the exhaust outlet is microcephaly's bellmouth intracavitary towards the elastic negative pressure, and the sealing valve includes cone
Shape plug, one end of the conical plug are that chock plug blocks the exhaust outlet, and the other end is fixed with chuck, the chuck and the upper cover
Surface between be connected with Packing spring.
Preferably, the upper cover is arranged with circular column in the side of the chuck, and the circular column is threaded with pressing sleeve,
The chuck is configured in the pressing sleeve.
Preferably, the control valve includes inlet tube, valve and drainage tube, and the draining hole passes through inlet tube and the valve
The inlet communication of door, the outlet of the drainage tube and the valve.
Preferably, the elastic shell is bellows, and one end of the bellows connects the upper cover, and the other end connects institute
State lower cover.
The utility model is intended to provide a kind of negative pressure drainage device, passes through the pressure difference of the intracavitary opposite outer of elastic negative pressure
So that elastic film is recessed, and then sufferer or medical staff is made to observe the working condition of negative pressure drainage device in real time, improves peace
Full property and service efficiency.
Detailed description of the invention
The these and other aspects of the utility model are described more fully now with reference to appended attached drawing which shows this
The currently preferred embodiment of utility model.Wherein:
Fig. 1 is the main view of embodiment one；
Fig. 2 is the cross-sectional view of embodiment one；
Fig. 3 is the portion the A enlarged drawing of Fig. 2；
Fig. 4 is a structure chart of embodiment one；
Fig. 5 is another structure chart of embodiment one；
Fig. 6 is the structure chart of embodiment two；
Fig. 7 is the part drawing of Fig. 6.
Specific embodiment
With reference to the accompanying drawing and specific example, the utility model is furtherd elucidate, it should be understood that these embodiments are only used for
Bright the utility model rather than limitation the scope of the utility model, after having read the utility model, those skilled in the art
Member falls within the application range as defined in the appended claims to the modification of the various equivalent forms of the utility model.
Embodiment one
As shown in Figure 1, the negative pressure drainage device of the present embodiment includes the upper cover 100 and lower cover 200 of hard, in upper cover 100
Bellows 400 is connected between lower cover 200；The elastic negative pressure of one sealing of upper cover 100, bellows 400 and the composition of lower cover 200
Chamber.Offer exhaust outlet, draining hole and intercommunicating pore respectively in upper cover 100.Exhaust outlet is configured with sealing valve 310, with unidirectional
Control the disengaging of elastic negative pressure intracavity gas.Draining hole is connected to drainage tube by control valve 320, to control drainage-fluid entrance or prevent
The only entrance of extraneous gas.The present embodiment is covered in the outer surface of 100 relative resilient negative pressure cavity of upper cover compared with prior art
One elastic film 600.
So, the negative pressure drainage device of the present embodiment passes through external opposite extruding upper cover 100 and lower cover before drainage
200, shrink bellows 400.The gas in elastic negative pressure chamber can be discharged from exhaust outlet in contraction process for bellows 400,
Sealing valve 310 prevents extraneous gas from entering in elastic negative pressure chamber through exhaust outlet after gas discharge, and elastic negative pressure chamber restores certain
Deformation after can opposite outer formed negative pressure；In drainage, drainage tube 323 is protruded into the wound or tissue to negative pressure drainage
Interior, liquid to be drained can be discharged into elastic negative pressure chamber through draining hole by negative pressure by opening controlling valve 320.Meanwhile it draining
In the process, since the pressure of elastic negative pressure chamber opposite outer is variant, then elastic film 600 opposite can be recessed inwardly, then bullet
Property film 600 sinking degree can reduce with elastic negative pressure chamber and external pressure difference and reduce, such sufferer is in negative pressure drainage
The working condition of negative pressure drainage device voluntarily can be intuitively observed in the process, with after negative pressure drainage device stops working, and
When remind staff carry out subsequent medical operation.
Further, the elastic film 600 of the present embodiment can be is made of flexible transparent material, is convenient for patient
The collection situation in elastic negative pressure chamber to drainage-fluid is further intuitively observed, is divided in real time convenient for sufferer or medical staff
It distinguishes.
In addition, the elastic film 600 of the present embodiment can be its surface be coated with bar shaped texture, in this way design be because of
When elastic film 600 is recessed, strip pattern, which is comprehended, generates corresponding deformation, judges Thin Elastic convenient for sufferer or medical staff
The sinking degree of film 600, and then judge elastic negative pressure chamber and external draught head.
In addition, the elastic shell of the present embodiment can be made of other soft elastic materials.
As shown in Figures 2 and 3, the tapered hole 120 of exhaust outlet that the present embodiment is opened up in the outer surface of upper cover 100, and bore
The major part in shape hole 120 is located at the outside of 100 relative resilient negative pressure cavity of upper cover, and microcephaly is located at 100 relative resilient negative pressure cavity of upper cover
Inside.The sealing valve 310 of the present embodiment includes conical plug 3111, and the chock plug of 3111 one end of conical plug blocks bellmouth above-mentioned
120, the other end is connected with chuck 3112, and Packing spring 314 is connected between chuck 3112 and the surface of upper cover 100.So, originally
For embodiment when applying pressure by outside makes elastic negative pressure chamber is opposite to compress, the intracavitary gas of elastic negative pressure can overcome sealing bullet
Spring 314 is applied to the elastic force that conical plug 3111 blocks bellmouth 120, separates conical plug 3111 with respect to bellmouth 120, gas warp
The gap of bellmouth 120 and conical plug 3111 is expelled to outside.In the gas row that the external force of application is withdrawn and elastic negative pressure is intracavitary
After out, opposite outer forms negative pressure after elastic shell voluntarily restores certain deformation quantity.It is formed in elastic negative pressure chamber opposite outer
After negative pressure, conical plug 3111 blocks bellmouth 120 and extraneous gas is prevented to enter elastic negative pressure chamber, guarantees leakproofness.
In addition, 314 aging of Packing spring causes 3111 pairs of conical plug cones to the negative pressure drainage device of the present embodiment in order to prevent
There is gap in the closure in shape hole 120, then is equipped with circular column 312 in the outer surface of upper cover 100, Packing spring 314 is configured in annular
In column 312, it is equipped with screw thread in the outer surface of circular column 312, circular column 312 is threaded with pressing sleeve, pressing sleeve by outer surface
Integrally comprise the column part 3131 being threadedly coupled with circular column 312 and the platen portion being pressed on chuck 3,112 3132.
Through the above technical solutions, the present embodiment can adjust the deformation quantity of Packing spring 314, and then control close by rotating pressing sleeve
Envelope spring 314 is applied to the pressure on the closure bellmouth 120 of conical plug 3111, improves leakproofness.
As shown in Figure 1, the control valve 320 of the present embodiment includes inlet tube 321, valve 322 and drainage tube 323, draining hole
Pass through the inlet communication of inlet tube 321 and valve 322, the outlet of drainage tube 323 and valve 322.So in drainage process
In, it is only necessary to the opening and closing of control valve 322 can guarantee that elastic negative pressure chamber will not enter external gas before drainage, and
It is smoothly entered in drainage process to drainage-fluid.
As shown in figure 4, the negative pressure drainage device of the present embodiment is between the intracavitary upper cover 100 of elastic negative pressure and lower cover 200
Configured with reset spring 800, deformation of the bellows 400 in elastic negative pressure chamber after gas discharge is can be improved in reset spring 800
Recovery extent to expand the volume of elastic negative pressure chamber, and then expands the pressure difference of elastic negative pressure chamber opposite outer, improves negative pressure and draws
The efficiency of stream.
In addition as shown in figure 5, the negative pressure drainage device of the present embodiment can advanced optimize, i.e., upper cover 100 extends to
Configured with limit threaded hole, limit threaded hole is threaded with length direction and reset spring for part 110 outside bellows 400
The identical limit threaded post 520 in 800 telescopic deformation directions, the other end and lower cover 200 of the limit threaded post 520 with respect to upper cover 100
Extend to the rotation connection of the part 210 outside bellows 400.So, the elastic negative pressure chamber of the present embodiment will not be voluntarily after exhaust
Deformation is replied, but by stirring and limiting the co-axially fixed rotating block 510 of screw thread master 520, make 200 phase of upper cover 100 and lower cover
To close to or far from, and then control the volume of elastic negative pressure chamber, realize control to elastic negative pressure chamber opposite outer pressure difference, with
Convenient for the rate of more accurate control negative pressure drainage.
Embodiment two
As shown in Figure 6 and Figure 7, the present embodiment offers counterbore 130 in the upper cover 100 of negative pressure drainage device, in counterbore 130
It is inside covered with elastic film 710, the metal-foil-clad pressure-strain piece on elastic film 710.Elastic film 710 is by a sealing ring
720 contradict in counterbore 130, and an electronic alarm device 730 is fixed by screw 740 and upper cover 100, and sealing ring 720 is compressed
Between upper cover 100 and electronic alarm device 730.Metal foil pressure-strain piece is connect with electronic alarm device 730.Sealing ring
There is gap between 720 and electronic alarm device 730, connects the one side outside 710 relative resilient negative pressure cavity of elastic film with outside
It is logical.
Pcb board is configured in the electronic alarm device 730 of the present embodiment, pcb board is configured with resistance R1, R2 and resistance R3, gold
Belong to foil strain gauge R4 and three resistance (R1, R2, R3) above-mentioned forms bridge circuit.Pcb board includes that amplification is made of amplifier
The comparison circuit of circuit and comparator composition.The bridge circuit of the present embodiment when elastic film 710 is recessed, answer by metal foil
Become piece R4 and piezoelectric effect occurs, resistance value changes, similar varistor, then the electricity of the varistor in bridge circuit
Resistance value changes, and the analog signal of output changes；The analog signal that amplifying circuit exports bridge circuit is put
Greatly, amplified analog signal is compared by comparison circuit with a threshold signal, if amplified analog signal is less than threshold
Value signal then illustrates that the pressure of elastic negative pressure chamber levels off to external pressure, and negative pressure drainage device is in abnormal operating state,
Comparison circuit then exports alarm signal, has several LED lamps, alarm signal above-mentioned in the surface configuration of electronic alarm device 730
Number by a switching circuit, such as silicon-controlled, lightening LED lamp, to cause sufferer or medical staff's note that improving negative pressure drainage dress
The safety in utilization or service efficiency set.
Claims (9)
1. a kind of negative pressure drainage device, including upper cover and lower cover, which is characterized in that pass through one between the upper cover and the lower cover
The elastic shell of adjustable volume forms elastic negative pressure chamber, is configured with draining hole and exhaust outlet in the upper cover, the draining hole is logical
It crosses control valve to be connected to drainage tube, the exhaust outlet is configured with sealing valve, and the upper cover offers connection elastic negative pressure chamber and outer
The intercommunicating pore in portion, the intercommunicating pore are covered with elastic film.
2. negative pressure drainage device according to claim 1, which is characterized in that the elastic film is that surface has bar shaped lines
Transparent membrane.
3. negative pressure drainage device according to claim 1, which is characterized in that the surface of the elastic film is fitted with pressure
Foil gauge, in the upper lid surface configuration circuit plate, the circuit board arrangement has there are three bridge resistor, the pressure-strain piece
Bridge circuit is formed with bridge resistor described in three, the bridge circuit is coupled with amplifying circuit, the amplifying circuit coupling
There is comparison circuit, the comparison circuit is coupled with light warning circuit.
4. negative pressure drainage device according to claim 1, which is characterized in that Yu Suoshu elastic negative pressure is intracavitary configured with reset
Spring, the both ends of the reset spring are separately connected the upper cover and the lower cover.
5. negative pressure drainage device according to claim 4, which is characterized in that the upper cover extends to outside the elastic shell
Part configured with limit threaded hole, the limit threaded hole is threaded with length direction and reset spring deformation direction
Identical limit threaded post, the other end and the lower cover of the limit relatively described upper cover of threaded post extend to the elastic container
External part rotates connection.
6. negative pressure drainage device according to claim 1, which is characterized in that the exhaust outlet is microcephaly towards the elasticity
Bellmouth in negative pressure cavity, the sealing valve include conical plug, and one end of the conical plug is that chock plug blocks the exhaust outlet, separately
One end is fixed with chuck, is connected with Packing spring between the chuck and the surface of the upper cover.
7. negative pressure drainage device according to claim 6, which is characterized in that the upper cover is arranged in the side of the chuck
There is circular column, the circular column is threaded with pressing sleeve, and the chuck is configured in the pressing sleeve.
8. negative pressure drainage device according to claim 1, which is characterized in that the control valve include inlet tube, valve and
Drainage tube, the draining hole pass through the inlet communication of inlet tube and the valve, and the outlet of the drainage tube and the valve connects
It is logical.
9. negative pressure drainage device according to claim 1, which is characterized in that the elastic shell is bellows, the wave
One end of line pipe connects the upper cover, and the other end connects the lower cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820556673.9U CN209695896U (en) | 2018-04-18 | 2018-04-18 | Negative pressure drainage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820556673.9U CN209695896U (en) | 2018-04-18 | 2018-04-18 | Negative pressure drainage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209695896U true CN209695896U (en) | 2019-11-29 |
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ID=68635244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820556673.9U Active CN209695896U (en) | 2018-04-18 | 2018-04-18 | Negative pressure drainage device |
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| CN (1) | CN209695896U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110898262A (en) * | 2019-12-21 | 2020-03-24 | 中国医学科学院北京协和医院 | Novel spiral negative pressure drainage device |
| CN111617325A (en) * | 2020-05-28 | 2020-09-04 | 西安市儿童医院 | Medical decompression drainage device based on stomach intestine, pleuroperitoneal cavity and postoperative position |
| CN111905166A (en) * | 2020-09-21 | 2020-11-10 | 中国人民解放军联勤保障部队第九二二医院 | Hematocele-preventing drainage operation device for neurosurgery |
| CN112515854A (en) * | 2020-11-30 | 2021-03-19 | 福建骏格科技有限公司 | Pressure control valve for closed drainage device based on dynamic clearance pressure control |
| CN117281963A (en) * | 2023-08-22 | 2023-12-26 | 徐州医科大学附属医院 | State self-testing negative pressure drainage device |
-
2018
- 2018-04-18 CN CN201820556673.9U patent/CN209695896U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110898262A (en) * | 2019-12-21 | 2020-03-24 | 中国医学科学院北京协和医院 | Novel spiral negative pressure drainage device |
| CN111617325A (en) * | 2020-05-28 | 2020-09-04 | 西安市儿童医院 | Medical decompression drainage device based on stomach intestine, pleuroperitoneal cavity and postoperative position |
| CN111905166A (en) * | 2020-09-21 | 2020-11-10 | 中国人民解放军联勤保障部队第九二二医院 | Hematocele-preventing drainage operation device for neurosurgery |
| CN112515854A (en) * | 2020-11-30 | 2021-03-19 | 福建骏格科技有限公司 | Pressure control valve for closed drainage device based on dynamic clearance pressure control |
| CN117281963A (en) * | 2023-08-22 | 2023-12-26 | 徐州医科大学附属医院 | State self-testing negative pressure drainage device |
| CN117281963B (en) * | 2023-08-22 | 2024-03-08 | 徐州医科大学附属医院 | State self-testing negative pressure drainage device |
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