CN110115779A - A kind of splanchnocoel liquid negative pressure pump means - Google Patents
A kind of splanchnocoel liquid negative pressure pump means Download PDFInfo
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- CN110115779A CN110115779A CN201910419542.5A CN201910419542A CN110115779A CN 110115779 A CN110115779 A CN 110115779A CN 201910419542 A CN201910419542 A CN 201910419542A CN 110115779 A CN110115779 A CN 110115779A
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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
- A61M1/73—Suction drainage systems comprising sensors or indicators for physical values
-
- 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
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
- A61M2205/3337—Controlling, regulating pressure or flow by means of a valve by-passing a pump
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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
The invention discloses a kind of splanchnocoel liquid negative pressure pump meanss, including drainage tube, drainage conduit, driving device, suction cylinder, reversal valve, pressure monitor and controller, wherein pressure monitor is used to monitor the pressure in drainage tube；Driving device is used to that the pumping piston of suction cylinder to be driven to move back and forth, and controller control driving device stops working when pressure monitor detects the pressure value in drainage tube lower than preset value or when the fall off rate of the pressure value in drainage tube is higher than scheduled rate；The first port of reversal valve is connected to the pump orifice of suction cylinder, and the second port of reversal valve is connected to drainage tube, and the third port of reversal valve is connected to drainage conduit, and the first port of reversal valve can be connected with second port or third port；Above-mentioned apparatus can avoid chest and abdomen cavity pressure and decline larger or very fast and cause complication, and can be counted by the action frequency to suction cylinder, accurately to determine actual aspiration.
Description
Technical field
The present invention relates to splanchnocoel drainage technology field, in particular to a kind of splanchnocoel liquid negative pressure pump means.
Background technique
Existing thoracocentesis abdominocentesis drain technology, is mostly just aspirated by medical staff to be manually operated, or only
It is merely the regulation for being simply monitored to drainage flow, or making index.Such as, it is specified that thoracic drainage and thoracentesis amount is not for the first time
Greater than 600ml, abdominal puncture and drainage amount is no more than 1000ml etc. for the first time.Although above-mentioned drainage technology has preferable effect,
But there is also more obvious disadvantages, still there may be aspirate excessive, too fast or aspiration to be difficult to quantify the problems such as determining
Cause patient's splanchnocoel pressure change to be difficult to control, for example, aspirate it is too fast, excessive may cause the decline of chest and abdomen cavity pressure it is very fast or
It is larger and cause complex metalwork, intestinal wall oedema, low blood pressure, induce a series of complication such as hepatic encephalopathy.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of splanchnocoel liquid negative pressure pump meanss to overcome or at least subtract
At least one of the drawbacks described above of the light prior art, the present invention controls drainage flow and drainage speed by adjusting pressure, reachable
To the purpose for reducing puncture drainage related complication occurrence probability.
To achieve the above object, the invention provides the following technical scheme:
A kind of splanchnocoel liquid negative pressure pump means, including drainage tube, drainage conduit, driving device, suction cylinder, reversal valve,
Pressure monitor and controller, the pressure monitor are used to monitor the pressure in the drainage tube；The driving device is used
In driving the pumping piston of the suction cylinder to move back and forth, the pressure monitor detects that the pressure value in the drainage tube is low
The fall off rate of pressure value when preset value or in the drainage tube is higher than when scheduled rate described in the controller control
Driving device stops working；The first port of the reversal valve is connected to the pump orifice of the suction cylinder, and the of the reversal valve
Two-port netwerk is connected to the drainage tube, and the third port of the reversal valve is connected to the drainage conduit, and the reversal valve is in the
When one operating position, the first port of the reversal valve is connected with the second port, and the reversal valve is in the second working position
When setting, the first port of the reversal valve is connected with the third port.
Preferably, it is unidirectional that the suction be connected along the drainage tube to the reversal valve direction is provided on the drainage tube
Valve is provided with the discharge check valve be connected along the reversal valve to the drainage conduit direction in the drainage conduit.
Preferably, pass through the detection of branch pipe and the pressure monitor on the drainage tube of the suction check valve upstream
Port connection.
Preferably, the driving device includes transfer tube, driving cylinder and three position four-way electromagnetic valve, and the transfer tube passes through
The three position four-way electromagnetic valve is connect with the driving cylinder, the pumping piston of the driving piston of the driving cylinder and the suction cylinder
Connection, when the three position four-way electromagnetic valve is in the first operating position, pumping piston described in the driving piston driving, which retreats, to be taken out
Imbibition body, when the three position four-way electromagnetic valve is in the second operating position, pumping piston described in the driving piston driving advances
Liquid, when the three position four-way electromagnetic valve is in third operating position, the driving piston locking is discharged.
Preferably, when the pressure monitor detects the pressure value in the drainage tube lower than preset value or described draw
When the fall off rate of pressure value in flow tube is higher than scheduled rate, the controller controls the three position four-way electromagnetic valve and switches to
Third operating position.
Preferably, the pressure monitor is in the pressure value and the suction that suction stage detects in the suction cylinder
When cylinder is in the difference of the pressure value that the discharge stage detects beyond setting range, the controller is by the three position four-way electromagnetic valve
It switches to third operating position and issues alarm signal.
Preferably, the reversal valve includes oscillatory valve, the pump orifice of the first port of the oscillatory valve and the suction cylinder
Connection, the second port and third port of the oscillatory valve are connected to the drainage tube and the drainage conduit respectively, described
Suction cylinder pump orifice be connected to the swing of the oscillatory valve with the drainage tube or the drainage conduit, the oscillatory valve with it is described
Driving cylinder is parallel to the three position four-way electromagnetic valve.
Preferably, further include auxiliary suction cylinder, the auxiliary suction cylinder under the driving of the driving device with the pumping
Cylinder counter motion is inhaled, the pump orifice of the auxiliary suction cylinder is connected to the 4th port of the reversal valve, and the reversal valve is in
When the first operating position, the third port of the reversal valve is connected with the 4th port, and the reversal valve is in the second work
When position, the second port of the reversal valve is connected with the 4th port.
Preferably, the driving device includes auxiliary drive cylinder, and the auxiliary drive cylinder passes through the 3-position 4-way electromagnetism
Valve is connect with the transfer tube and the auxiliary drive cylinder and the driving cylinder counter motion, the auxiliary of the auxiliary drive cylinder are driven
Piston is connect with the auxiliary suction piston of the auxiliary suction cylinder.
Preferably, between the driving piston and the pumping piston and the auxiliary drive piston and the auxiliary pumping
It is detachably connected between attraction piston.
To sum up, splanchnocoel liquid negative pressure pump means provided by the invention, including drainage tube, drainage conduit, driving device, pumping
Inhale cylinder, reversal valve, pressure monitor and controller, wherein drainage tube with splanchnocoel for being connected to, to extract in splanchnocoel
Waste liquid, pressure monitor are used to monitor the pressure in drainage tube；Driving device is used to that the pumping piston of suction cylinder to be driven back and forth to move
Dynamic, driving device can be piston cylinder or be linear motor or be the structure that rotating electric machine is matched with transmission mechanism,
The fall off rate of pressure value when pressure monitor detects the pressure value in drainage tube lower than preset value or in drainage tube is high
Controller control driving device stops working when scheduled rate；The first port of reversal valve is connected to the pump orifice of suction cylinder,
The second port of reversal valve is connected to drainage tube, and the third port of reversal valve is connected to drainage conduit, and reversal valve is in the first work
When position, the first port of reversal valve is connected with second port, when reversal valve is in the second operating position, the first end of reversal valve
Mouth is connected with third port；When in use, drainage tube is connected to splanchnocoel, controller controls driving device starting, drives and takes out
It inhales cylinder to move back and forth, while controller controls reversal valve according to the direction of motion of suction cylinder in the first operating position and the second work
Make to convert between position, the pressure value in pressure monitor real-time monitoring drainage tube, when the pressure value in drainage tube is lower than preset value
Or the fall off rate of the pressure value in drainage tube be higher than scheduled rate when controller control driving device stop working, to avoid
The decline of chest and abdomen cavity pressure is larger or very fast and causes complex metalwork, intestinal wall oedema, low blood pressure, induces hepatic encephalopathy etc. one
Serious complications, and can be counted by the action frequency to suction cylinder, to be accurately determined actual aspiration.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of splanchnocoel liquid negative pressure pump means provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram for the negative pressure pumping unit that an embodiment of the present invention provides；
Fig. 3 is the structural schematic diagram for the negative pressure pumping unit that another embodiment of the present invention provides；
Fig. 4 is the structural schematic diagram for the negative pressure pumping unit that another embodiment of the present invention provides.
In figure:
1 is drainage tube；2 be drainage conduit；3 inhale unit for negative pressure pump；301 be transfer tube；302 three position four-way electromagnetic valves；303
For driving cylinder；304 be driving piston；305 be suction cylinder；306 be pumping piston；307 be reversal valve；308 be suction check valve；
309 be discharge check valve；310 be double rotational directions thread bush；311 be oil groove；312 be auxiliary suction cylinder；313 be auxiliary driving cylinder；4
For collection container；5 be pressure monitor；6 be branch pipe.
Specific embodiment
The purpose of the present invention is to provide a kind of splanchnocoel liquid negative pressure pump means, splanchnocoel liquid negative pressure pump inhales dress
The structure design set can avoid the decline of chest and abdomen cavity pressure larger or very fast, while accurately calculate actual aspiration.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 and Fig. 2 are please referred to, Fig. 1 is that the structure of splanchnocoel liquid negative pressure pump means provided in an embodiment of the present invention is shown
It is intended to, Fig. 2 is the structural schematic diagram for the negative pressure pumping unit that an embodiment of the present invention provides.
A kind of splanchnocoel liquid negative pressure pump means provided in an embodiment of the present invention, including drainage tube 1, drainage conduit 2, driving
Device, suction cylinder 305, reversal valve 307, pressure monitor 5 and controller.
Wherein, drainage tube 1 with splanchnocoel for being connected to, and to extract the waste liquid in splanchnocoel, drainage conduit 2 is far from reversal valve
307 one end should also be connected with collection container 4, and to collect the liquid extracted, it is any that collection container 4 can be bottle, basin, bag etc.
Container appropriate, pressure monitor 5 are used to monitor the pressure in drainage tube 1；Driving device is used to drive the suction of suction cylinder 305
Piston 306 moves back and forth, and driving device can be piston cylinder or be linear motor or be rotating electric machine and transmission mechanism
The structure matched, pressure when pressure monitor 5 detects the pressure value in drainage tube 1 lower than preset value or in drainage tube 1
Controller control driving device stops working when the fall off rate of force value is higher than scheduled rate；The first port of reversal valve 307 with
Aspirate the pump orifice connection of cylinder 305, the second port of reversal valve 307 is connected to drainage tube 1, the third port of reversal valve 307 and
Drainage conduit 2 is connected to, and when reversal valve 307 is in the first operating position, the first port of reversal valve 307 is connected with second port, changes
When being in the second operating position to valve 307, the first port of reversal valve 307 is connected with third port, the working position of reversal valve 307
The conversion set and the conversion of the working condition of the suction of suction cylinder 305 and discharge link, i.e., when suction cylinder 305 is in suction operation shape
When state, reversal valve 307 is in the first operating position, when aspirate cylinder 305 be in exclude working condition when, reversal valve 307 is in the
Two operating positions.
Compared with prior art, splanchnocoel liquid negative pressure pump means provided by the invention when in use, by drainage tube 1 with
Splanchnocoel connection, controller control driving device starting, drive suction cylinder 305 to move back and forth, while controller controls reversal valve
307 convert between the first operating position and the second operating position according to the direction of motion of suction cylinder 305, and pressure monitor 5 is real
When monitoring drainage tube 1 in pressure value, the pressure value when pressure value in drainage tube 1 is lower than preset value or in drainage tube 1
Fall off rate be higher than scheduled rate when controller control driving device stop working, to avoid chest and abdomen cavity pressure decline it is larger or
It is very fast and cause complex metalwork, intestinal wall oedema, low blood pressure, induce a series of complication such as hepatic encephalopathy, and can by pair
The action frequency of suction cylinder 305 is counted, to be accurately determined actual aspiration.
As shown in Fig. 2, in embodiments of the present invention, being provided on drainage tube 1 and being led along drainage tube 1 to 307 direction of reversal valve
Logical suction check valve 308 is provided with the discharge check valve 309 be connected along reversal valve 307 to 2 direction of drainage conduit in drainage conduit 2,
In this way when aspirate cylinder 305 converted between two kinds of working conditions when, would not there is a phenomenon where liquid to flow backwards, guarantee suction operation
Smoothly orderly progress.
Preferably, as shown in Fig. 2, passing through branch pipe 6 and pressure monitoring on the drainage tube 1 of 308 upstream of suction check valve
The detection port of instrument 5 connects.
Preferably, as shown in Fig. 2, in embodiments of the present invention, driving device includes transfer tube 301, driving cylinder 303
And three position four-way electromagnetic valve 302, transfer tube 301 are connect by three position four-way electromagnetic valve 302 with driving cylinder 303, transfer tube 301
Hydraulic oil is extracted from oil groove 311 and supplies driving cylinder 303 through three position four-way electromagnetic valve 302, to drive 305 activity of suction cylinder, is driven
Dynamic pump 301 can be constant displacement pump, is also possible to variable pump, is provided with overflow valve or pressure maintaining valve (not in the exit of transfer tube 301
Diagram), the pressure to avoid 301 exit of transfer tube is excessive；The driving piston 304 of driving cylinder 303 and the suction for aspirating cylinder 305
Piston 306 connects, when three position four-way electromagnetic valve 302 is in the first operating position, after driving piston 304 drives pumping piston 306
Pumping liquid is moved back, when three position four-way electromagnetic valve 302 is in the second operating position, driving piston 304 drives pumping piston 306 to advance
Liquid is discharged, when three position four-way electromagnetic valve 302 is in third operating position, drives 304 locking of piston, before starting the operation,
It powers first to transfer tube 301, at this point, three position four-way electromagnetic valve 302 is in middle position, transfer tube 301 is not yet supplied to driving cylinder 303
Hydraulic oil is answered, driving cylinder 303 and suction cylinder 305 remain stationary.Three position four-way electromagnetic valve 302 and transfer tube 301 are by being built-in with
The pressure monitor 5 of control element directly controls, or by with 5 communication connection of pressure monitor controller (it is not shown, including
Port CPU, I/O etc.) control, in practical applications, controller can be by the stalling of control transfer tube 301 or by 3-position 4-way electromagnetism
Valve 302 is placed in third operating position to make driving device stop working.
Above-mentioned technical proposal is advanced optimized, when pressure monitor 5 detects the pressure value in drainage tube 1 lower than preset value
Or the fall off rate of the pressure value in drainage tube 1 be higher than scheduled rate when, controller control three position four-way electromagnetic valve 302 switch
To third operating position.
In one alternate embodiment, it is detected in the pressure value that suction 305 extraction stage of cylinder detects with the discharge stage
Pressure value difference exceed setting range when, three position four-way electromagnetic valve 302 is switched into third operating position and issues alarm signal
Number.Such mode is particularly suitable for embodiment shown in Fig. 2.In the embodiment shown in Figure 2, only it is provided with a suction cylinder
305, to carry out body fluid suction in an intermittent fashion, aspiration procedure is divided into extraction and two stages of discharge, and pressure monitor 5 exists
The pressure value that discharge phase detects will be generally greater than the pressure value that extraction stage immediately detects, the difference of the two pressure values
It can preferably reflect that chest and abdomen cavity pressure caused by being extracted declines, be controlled by detecting the pressure difference, and based on the pressure difference
Body fluid suction can be very good to avoid suction excessive.
In one alternate embodiment, reversal valve 307 includes oscillatory valve, and oscillatory valve is generally made of spool and valve body,
First port on valve body can be connected to the rotation of spool with one in second port and third port, and spool turns
Dynamic to drive also by piston cylinder, the first port of oscillatory valve is connected to the pump orifice of suction cylinder 305, the second port of oscillatory valve
And third port is connected to drainage tube 1 and drainage conduit 2 respectively, aspirate cylinder 305 pump orifice with oscillatory valve swing with draw
Flow tube 1 or drainage conduit 2 are connected to, and the piston cylinder and driving cylinder 303 of oscillatory valve are parallel to three position four-way electromagnetic valve 302, without
Control circuit is separately set, overall structure is enormously simplified.
In one alternate embodiment, reversal valve 307 can be two-position three way magnetic valve, the work of the two-position three way magnetic valve
With consistent with above-mentioned swing valve action, it is suitable for embodiment shown in Fig. 2.
Can only carry out body fluid suction in an intermittent fashion in the embodiment depicted in figure 2, i.e., pump drainage alternately, efficiency compared with
It is low, to improve pump drainage efficiency, as shown in figure 3, in one alternate embodiment, splanchnocoel liquid negative pressure pump means further includes auxiliary
Suction cylinder 312 is helped, adding suction cylinder 305 and suction cylinder 305 is identical suction cylinder 305, it has the same diameter, length etc.,
Auxiliary suction cylinder 312 is under the drive of the drive with suction 305 counter motion of cylinder, i.e., auxiliary when aspirating the suction body fluid of cylinder 305
Help suction cylinder 312 that body fluid is discharged, when aspirating the discharge body fluid of cylinder 305, auxiliary suction cylinder 312 aspirates body fluid, so that body fluid
Pump drainage can be carried out continuously, and be improved efficiency, and reversal valve 307 uses two-position four way change valve 307 thus, auxiliary suction cylinder 312
Pump orifice is connected to the 4th port of reversal valve 307, when reversal valve 307 is in the first operating position, the first end of reversal valve 307
Mouth is connected with second port, and the third port of reversal valve 307 is connected with the 4th port, and reversal valve 307 is in the second operating position
When, the first port of reversal valve 307 is connected with third port, and the second port of reversal valve 307 is connected with the 4th port.
In embodiment illustrated in fig. 3, suction cylinder 305 is driven with auxiliary suction cylinder 312 by the same driving cylinder 303, at other
In embodiment, suction cylinder 305 can also be driven from auxiliary suction cylinder 312 by different driving cylinders 303, as shown in figure 4, driving dress
Setting further includes auxiliary drive cylinder 313, and auxiliary drive cylinder 313 is connect and assisted with transfer tube 301 by three position four-way electromagnetic valve 302
Driving cylinder 313 and 303 counter motion of driving cylinder, auxiliary drive piston 304 and the auxiliary suction cylinder 312 of auxiliary drive cylinder 313
Auxiliary suction piston 306 connects.
Preferably, the maximum aspiration volume of above-mentioned suction cylinder 305 is set smaller than equal to 2ml, the maximum work of driving cylinder 303
Working frequency is set smaller than equal to 20 beats/min.
In a preferred embodiment, drive between piston 304 and pumping piston 306 and auxiliary drive piston 304 with
It is detachably connected between auxiliary suction piston 306, specifically, is connected as between piston 304 and pumping piston 306 with driving
Example, driving 304 end of piston are provided with the first external thread section, and the end of pumping piston 306 is provided with the second external thread section, and first
The thread rotary orientation of thread segment and the second thread segment on the contrary, and interconnected by double rotational directions thread bush 310, double rotational directions spiral shell
Both ends in line set 310 are respectively correspondingly provided with oppositely oriented the first internal thread segment and the second internal thread segment.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of splanchnocoel liquid negative pressure pump means, which is characterized in that including drainage tube, drainage conduit, driving device, suction
Cylinder, reversal valve, pressure monitor and controller, the pressure monitor are used to monitor the pressure in the drainage tube；It is described
Driving device is used to that the pumping piston of the suction cylinder to be driven to move back and forth, and the pressure monitor detects in the drainage tube
Pressure value when being lower than preset value or the control when fall off rate of the pressure value in the drainage tube is higher than scheduled rate
Device controls the driving device and stops working；The first port of the reversal valve is connected to the pump orifice of the suction cylinder, described
The second port of reversal valve is connected to the drainage tube, and the third port of the reversal valve is connected to the drainage conduit, described to change
When being in the first operating position to valve, the first port of the reversal valve is connected with the second port, and the reversal valve is in
When the second operating position, the first port of the reversal valve is connected with the third port.
2. splanchnocoel liquid negative pressure pump means according to claim 1, which is characterized in that be provided on the drainage tube
The suction check valve be connected along the drainage tube to the reversal valve direction is provided with along the reversal valve extremely in the drainage conduit
The discharge check valve of the drainage conduit direction conducting.
3. splanchnocoel liquid negative pressure pump means according to claim 2, which is characterized in that the suction check valve upstream
The drainage tube on connect with the detection port of the pressure monitor by branch pipe.
4. splanchnocoel liquid negative pressure pump means according to claim 1 to 3, which is characterized in that the driving
Device includes transfer tube, driving cylinder and three position four-way electromagnetic valve, and the transfer tube passes through the three position four-way electromagnetic valve and institute
Driving cylinder connection is stated, the driving piston of the driving cylinder is connect with the pumping piston of the suction cylinder, the 3-position 4-way electromagnetism
When valve is in the first operating position, pumping piston described in the driving piston driving retreats pumping liquid, the 3-position 4-way electricity
When magnet valve is in the second operating position, pumping piston described in the driving piston driving, which advances, is discharged liquid, the 3-position 4-way
When solenoid valve is in third operating position, the driving piston locking.
5. splanchnocoel liquid negative pressure pump means according to claim 4, which is characterized in that the pressure monitor detection
The fall off rate of pressure value when being lower than preset value to the pressure value in the drainage tube or in the drainage tube is higher than default
When rate, the controller controls the three position four-way electromagnetic valve and switches to third operating position.
6. splanchnocoel liquid negative pressure pump means according to claim 4, which is characterized in that the pressure monitor is in institute
It states suction cylinder and is in the pressure value and the difference aspirated cylinder and be in the pressure value that the discharge stage detects that suction stage detects
When beyond setting range, the three position four-way electromagnetic valve is switched to third operating position and issues alarm signal by the controller
Number.
7. splanchnocoel liquid negative pressure pump means according to claim 4, which is characterized in that the reversal valve includes swinging
Valve, the first port of the oscillatory valve are connected to the pump orifice of the suction cylinder, the second port and third of the oscillatory valve
Port is connected to the drainage tube and the drainage conduit respectively, it is described suction cylinder pump orifice with the oscillatory valve swing with
The drainage tube or drainage conduit connection, the oscillatory valve and the driving cylinder are parallel to the three position four-way electromagnetic valve.
8. splanchnocoel liquid negative pressure pump means according to claim 4, which is characterized in that it further include auxiliary suction cylinder,
The auxiliary suction cylinder under the driving of the driving device with the suction cylinder counter motion, the suction of the auxiliary suction cylinder
Mouth is connected to the 4th port of the reversal valve, when the reversal valve is in the first operating position, the third end of the reversal valve
Mouthful be connected with the 4th port, when the reversal valve is in the second operating position, the second port of the reversal valve with it is described
The conducting of 4th port.
9. splanchnocoel liquid negative pressure pump means according to claim 8, which is characterized in that the driving device includes auxiliary
Driving cylinder is helped, the auxiliary drive cylinder is connect by the three position four-way electromagnetic valve with the transfer tube and the auxiliary drive cylinder
With the driving cylinder counter motion, the auxiliary suction of the auxiliary drive piston of the auxiliary drive cylinder and the auxiliary suction cylinder is living
Plug connection.
10. splanchnocoel liquid negative pressure pump means according to claim 9, which is characterized in that the driving piston and institute
It states between pumping piston and is detachably connected between the auxiliary drive piston and the auxiliary suction piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910419542.5A CN110115779A (en) | 2019-05-20 | 2019-05-20 | A kind of splanchnocoel liquid negative pressure pump means |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910419542.5A CN110115779A (en) | 2019-05-20 | 2019-05-20 | A kind of splanchnocoel liquid negative pressure pump means |
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| CN110115779A true CN110115779A (en) | 2019-08-13 |
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| CN201910419542.5A Pending CN110115779A (en) | 2019-05-20 | 2019-05-20 | A kind of splanchnocoel liquid negative pressure pump means |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113332592A (en) * | 2021-06-04 | 2021-09-03 | 丰凯医疗器械（上海）有限公司 | Catheter pump assembly |
| CN115553870A (en) * | 2022-11-17 | 2023-01-03 | 北京华脉泰科医疗器械股份有限公司 | Intelligent suction device and control method thereof |
| CN117357717A (en) * | 2023-10-27 | 2024-01-09 | 首都医科大学附属北京潞河医院 | Synchronous suction and discharge device for fluid |
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| CN117357717A (en) * | 2023-10-27 | 2024-01-09 | 首都医科大学附属北京潞河医院 | Synchronous suction and discharge device for fluid |
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Application publication date: 20190813 |