CN109303937A - Automatic decompression adjustment device for left heart drainage tube - Google Patents
Automatic decompression adjustment device for left heart drainage tube Download PDFInfo
- Publication number
- CN109303937A CN109303937A CN201811301999.8A CN201811301999A CN109303937A CN 109303937 A CN109303937 A CN 109303937A CN 201811301999 A CN201811301999 A CN 201811301999A CN 109303937 A CN109303937 A CN 109303937A
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- Prior art keywords
- connecting pipe
- module
- pressure
- elastomeric pad
- left heart
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- 230000006837 decompression Effects 0.000 title abstract 3
- 238000012545 processing Methods 0.000 claims abstract description 35
- 238000006073 displacement reaction Methods 0.000 claims description 27
- 230000001105 regulatory effect Effects 0.000 claims description 15
- 239000012528 membrane Substances 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 13
- 230000006698 induction Effects 0.000 claims description 11
- 238000012423 maintenance Methods 0.000 claims description 11
- 238000012360 testing method Methods 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 1
- 238000007675 cardiac surgery Methods 0.000 abstract 1
- 239000012535 impurity Substances 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
- 238000001356 surgical procedure Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000013022 venting Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 230000000747 cardiac effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002612 cardiopulmonary effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 210000002837 heart atrium Anatomy 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 210000005240 left ventricle Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 210000003492 pulmonary vein Anatomy 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/84—Drainage tubes; Aspiration tips
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgery (AREA)
- External Artificial Organs (AREA)
Abstract
本发明专利公开了左心引流管的自动减压调节装置，具体涉及医疗设备件的技术领域。左心引流管的自动减压调节装置，包括Y型的连接管道，连接管道内设有弹性垫片、转轴和微型电机，弹性垫片与转轴之间连接有牵引绳，转轴的一端与微型电机的输出轴连接，微型电机固定在连接管道外，连接管道外还设有第一提示灯；连接管道内还设有压力采集模块、红外感应模块、存储模块、处理模块和控制模块。采用本发明技术方案克服了现有的左心引流系统中管路内的压力无法自动调节的问题，可用于心脏外科手术中对体外循环管理进行降压。
The patent of the present invention discloses an automatic decompression and adjustment device for a left heart drainage tube, and specifically relates to the technical field of medical equipment parts. The automatic decompression adjustment device of the left heart drainage tube includes a Y-shaped connecting pipe. The connecting pipe is provided with an elastic gasket, a rotating shaft and a micro motor. A traction rope is connected between the elastic gasket and the rotating shaft, and one end of the rotating shaft is connected to the micro motor. The output shaft is connected, the micro motor is fixed outside the connecting pipe, and a first prompt light is also arranged outside the connecting pipe; the connecting pipe is also provided with a pressure acquisition module, an infrared sensing module, a storage module, a processing module and a control module. The technical solution of the present invention overcomes the problem that the pressure in the pipeline in the existing left heart drainage system cannot be automatically adjusted, and can be used for depressurizing extracorporeal circulation management in cardiac surgery.
Description
Technical field
The present invention relates to the technical fields of Medical Devices, in particular to the automatic pressure-reducing regulating device of left heart drainage-tube.
Background technique
When cardiac operation, need heart intracavity blood drawing sky, so that a clear, bloodless surgical field of view is formed,
To smoothly complete operation.Left heart drainage-tube is located in row's blood device of atrium sinistrum or left ventricle.Major part hospital uses at present
Cardiopulmonary Bypass feels concerned about the more side opening pipelines of system implantation by right pulmonary vein a to left side and is connected with extracorporeal circulation pipeline system as the left heart
Drainage system.
Left heart venting system need to constantly regulate the pressure in it with its pipe-line system negative pressure of operation progress, be mostly at present
Manual mode is adjusted, and adjusting pipe-line system negative pressure opportunity and its magnitude can not be accurately held in the regulative mode art, and in art
Drainage system vacuum magnitude can not be automatically adjusted real-time, quickly, it is not good enough so as to cause being drained in art, and cause visual area exposure difference and
Left heart venting is insufficient, greatly increases the risk of operation.
Summary of the invention
The invention is intended to provide the automatic pressure-reducing regulating device of left heart drainage-tube, to solve in existing left heart venting system
The problem of pressure in pipeline is unable to adjust automatically.
In order to achieve the above object, base case of the invention is as follows: the automatic pressure-reducing regulating device of left heart drainage-tube, packet
The connecting pipe of Y type is included, is equipped with elastomeric pad, shaft and micromotor, the elastomeric pad in one end of the connecting pipe
It is removably attachable in connecting pipe, the periphery of the elastomeric pad and the inner wall of connecting pipe fit, the elastic cushion
Traction rope, one end of the shaft and the output axis connection of micromotor are connected between piece and shaft, the micromotor is solid
It is scheduled on outside connecting pipe, the first warning light is additionally provided with outside the connecting pipe；
Pressure acquisition module, infrared induction module, memory module, processing module and control are additionally provided in the connecting pipe
Module,
The pressure acquisition module is for detecting the pressure value in connecting pipe and sending pressure value to memory module；
The infrared induction module is used to detect the displacement of elastomeric pad and sends displacement to memory module；
The memory module be used to store pressure preset, the acquisition of pressure acquisition module connecting pipe pressure value, red
The displacement for the elastomeric pad that outer induction module is sent；
The processing module for pressure value to be compared with pressure preset, displacement with 0, when pressure value greater than etc.
In pressure preset and when displacement is equal to 0, the processing module issues open signal to control module；When pressure value is less than
When pressure preset and displacement are greater than 0, the processing module issues shutdown signal to control module；
The control module opens micromotor and the first warning light when receiving the open signal of processing module sending；Institute
It states when control module receives the shutdown signal of processing module sending and closes micromotor and the first warning light.
The principle and effect of base case: preoperative in Cardiac surgical procedures, connecting pipe is connected on left heart drainage-tube, at this time
Elastomeric pad in connecting pipe is by the closed at one end of connecting pipe；In the course of surgery, negative pressure is generated in connecting pipe, when negative
Pressure reach after setting value can negative pressure traction elastomeric pad deformation occurs so that connecting pipe is in communication with the outside, connecting pipe at this time
Interior pressure reduction and elastomeric pad recovery again blocks connecting pipe, thus realize in connecting pipe pressure it is automatic
It adjusts, it is ensured that the safety of operation and good surgical field of view.
But since elastomeric pad elastically-deformable sensitivity decrease or in process of production can not after a longer time of use
Deformation can be generated in pressure preset by ensuring each elastomeric pad, therefore pass through measurement to pressure in connecting pipe and right
The monitoring of elastomeric pad deflection, when deformation occurs after pressure value meets or exceeds pressure preset, at this time by micro-
Type motor drives shaft rotation, to pull elastomeric pad to generate deformation by the traction rope in shaft, it is ensured that work as pressure value
Elastomeric pad can be made at the first time after pressure preset deformation occurs by meeting or exceeding, to realize pressure in connecting pipe
It adjusts, it is ensured that the safety of operation；And it is also opened by the first warning light to remind hidden danger existing for staff's present apparatus,
Consequently facilitating on-call maintenance or replacement.Therefore, the present apparatus is connected by ensuring in surgical procedure from main regulation and auxiliary adjustment
Pipeline energy pressure is in normal range (NR), it is ensured that the life security of patient.
Further, detection module and the second warning light are additionally provided in the connecting pipe, the detection module is for examining
It surveys the leakproofness of elastomeric pad and connecting pipe inner wall and will test result and be sent to processing module, the control module is also used to
Opening or closing for the second warning light is controlled, when testing result is that unsealing is complete, processing module is opened to control module sending
Open the signal of the second warning light；When testing result is to seal intact, processing module is issued to control module closes the second prompt
The signal of lamp.
Detection elastomeric pad whether can be bonded with connecting pipe inner wall before the present apparatus works by detection module, be convenient for and
Shi Faxian security risk, to improve the safety of the present apparatus.
Further, one end in the shaft far from micromotor is connected with torsional spring, and the one end of torsional spring is fixed on company
In adapter tube road.
Power is stored when shaft rotates by torsional spring, and is realized and is resetted by torsional spring when shaft stops operating, to provide
The working efficiency of the present apparatus.
Further, filter membrane is additionally provided in the connecting pipe, the filter membrane is located at one end of elastomeric pad.
The impurity or dust that are avoided that in air by filter membrane fall to the problem in connecting pipe, improve operation
Safety.
Further, maintenance door is additionally provided in the connecting pipe.
The component that damage can be replaced in time by maintenance door, extends the service life of the present apparatus；And it can also be clear in time
Except the impurity or dust on filter membrane, the circulation of air in connecting pipe is improved.
Further, the elastomeric pad uses inert metal piece.
The problem of elastomeric pad is chronically exposed in air gradually aging is avoided, improve elastomeric pad uses the longevity
Life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the automatic pressure-reducing regulating device of left heart drainage-tube of the present invention；
Fig. 2 is the module diagram of the automatic pressure-reducing regulating device of left heart drainage-tube of the present invention；
Fig. 3 is the flow chart of the automatic pressure-reducing regulating device of left heart drainage-tube of the present invention.
Specific embodiment
Below by specific embodiment, the present invention is described in further detail:
Appended drawing reference in Figure of description include: connecting pipe 1, elastomeric pad 2, shaft 3, micromotor 4, torsional spring 5,
Traction rope 6, filter membrane 7.
Embodiment is substantially as shown in Figure 1 and Figure 2: the automatic pressure-reducing regulating device of left heart drainage-tube, the connection including Y type
Pipeline 1, the upper right branch of connecting pipe 1 are equipped with elastomeric pad 2, shaft 3 and micromotor 4, and elastomeric pad 2 is using inertia gold
Belong to piece, for traditional rubber, this material avoids elastomeric pad 2 and is exposed in air and causes quickly old for a long time
The case where change；The upper and lower ends of elastomeric pad 2 are equipped with limited post, and connecting pipe 1 is equipped with the opening matched with limited post,
Elastomeric pad 2 can be made to be fastened between two openings by limited post, it, can be by squeezing bullet when needing replacing elastomeric pad 2
The limited post of property 2 upper and lower ends of gasket takes out it from opening, and the edge of elastomeric pad 2 and the inner wall of connecting pipe 1 are affixed
It closes, to realize the sealing to connecting pipe 1.
Be connected with traction rope 6 between elastomeric pad 2 and shaft 3, shaft 3 be rotatably connected in connecting pipe 1 (shaft 3 with
Its length direction is that axis is rotated), the left side of shaft 3 is connected with torsional spring 5, is fixed in connecting pipe 1 on the left of torsional spring 5.
The right side of shaft 3 and the output axis connection of micromotor 4, micromotor 4 are fixed on outside connecting pipe 1, are installed outside connecting pipe 1
There is the first warning light；Filter membrane 7 is equipped in connecting pipe 1, filter membrane 7 is located at the left side of shaft 3, will be outer by 7 energy of filter membrane
The dust and impurities on boundary filter out, and avoid these dusts or impurity enters in connecting line and causes life danger to patient
Situation improves the safety of operation.It is rotatably connected to maintenance door on the left side wall of 1 upper right branch of connecting pipe, maintenance door is leaned on
Nearly filter membrane 7, can replace the components in the present apparatus by maintenance door, to extend the service life of the present apparatus；
And by maintenance door can also in time by filter membrane 7 dust or impurity dispose, it is ensured that the stream of air in connecting pipe 1
Smooth property.
Pressure acquisition module, infrared induction module, memory module, processing module and control mould are additionally provided in connecting pipe 1
Block,
Pressure acquisition module uses brand for the pressure transmitter (model MIK-P300) of MEACON, pressure acquisition module
For detecting the pressure value in connecting pipe 1 and sending pressure value to memory module；
Infrared induction module uses brand for the infrared inductor (model E3F-20L/20C1) of auspicious Jie Er, infrared induction
Module is used to detect the displacement of elastomeric pad 2 and sends displacement to memory module, and displacement is elastomeric pad by initial
The distance value of position to natural resiliency deformation farthest；
Memory module is stored using memory, and memory module is used to store pressure preset, pressure acquisition module is adopted
The displacement for the elastomeric pad 2 that pressure value, the infrared induction module of the connecting pipe 1 of collection are sent；
Processing module carries out data processing using processor, and processing module is used for pressure value and pressure preset, displacement
Amount is compared with 0, and when pressure value is more than or equal to pressure preset and displacement is equal to 0, processing module is sent out to control module
Open signal out；When pressure value is less than pressure preset and displacement is greater than 0, processing module is issued to control module and is closed
Signal；
Control module uses the controller of Siemens's production, and control module is in the open signal for receiving processing module sending
When, open micromotor 4 and the first warning light；Control module closes micro electric when receiving the shutdown signal of processing module sending
Machine 4 and the first warning light.
Detection module and the second warning light are additionally provided in connecting pipe 1, detection module uses brand for the photosensitive biography of Risym
Sensor, detection module, which is used to detect the leakproofness of elastomeric pad 2 and 1 inner wall of connecting pipe and will test result, is sent to processing mould
Block, control module are also used to control opening or closing for the second warning light, when testing result is that unsealing is complete, processing module
The signal for opening the second warning light is issued to control module；When testing result is to seal intact, processing module is to control module
Issue the signal for closing the second warning light.
This programme using when comprise the following steps (as shown in Fig. 3):
101, detection module determines elastomeric pad 2 by receiving the light sent from 2 direction of elastomeric pad and connects
The leakproofness in adapter tube road 1 simultaneously sends result to processing module；When detection module has detected that light shines from 2 direction of elastomeric pad
It penetrates, then executes 102, be irradiated from 2 direction of elastomeric pad when light has been not detected in detection module, then execute 103；
102, processing module issues the signal for opening the second warning light to control module, informs the elasticity of user's present apparatus
Gasket 2 does not seal connecting pipe 1 completely, needs repairing or replace gasket seal；
103, pressure acquisition module starts to acquire the pressure value in connecting pipe 1, and collected pressure value is sent out in real time
Memory module is given, and infrared induction module will generate elastically-deformable displacement transmission memory module by elastomeric pad 2 at this time；
Processing module starts the size of the size for comparing pressure value and pressure preset and displacement and 0；When pressure value is greater than or waits
In pressure preset and when displacement is equal to 0,104 are executed；When pressure value is less than pressure preset and displacement is greater than 0,
Then execute 105；
104, processing module issues the signal for opening micromotor 4 and the first warning light to control module, and executes 106,
Elastomeric pad 2 can not independently complete flexible deformation at this time；Micromotor 4 passes through the output shaft band turn of micromotor 4 after opening
Axis 3 rotates, and shaft 3 passes through the pulling of traction rope 6 elastomeric pad 2 after rotating deformation occurs, and torsional spring 5, which starts to reverse, at this time stores power, from
And connecting pipe 1 is in communication with the outside, the pressure in the adjusting connecting pipe 1 of assistant spring gasket 2 is realized, this dress is enhanced
The safety set, and ensure the life security of patient in the course of surgery；First warning light reminds user's elasticity after opening
Gasket 2 goes wrong, and needs repairing or replaces.
105, processing module issues the signal for closing micromotor 4 and the first warning light to control module, and executes 101,
Negative pressure in present apparatus energy normal regulating connecting pipe 1 at this time, needs to close micromotor 4 and the first warning light, if micro electric
When machine 4 becomes closed state from open state, torsional spring 5 accelerates the reset of shaft 3 by the spring energy of itself, to reduce traction
It restricts the pulling force of 6 pairs of elastomeric pads 2, accelerates the reset of elastomeric pad 2, improve the working efficiency of the present apparatus；
106, the displacement that 2 natural resiliency of elastomeric pad deforms is sent to memory module again by infrared induction module, is located
Displacement is compared by reason device again with 0, when displacement is greater than 0, then executes 105；When displacement is equal to 0, illustrate bullet
Property gasket 2 is stuck or follows the string the ability of deformation；It needs to replace elastomeric pad 2 in time at this time, then executes 101.
By the multiple cycle operation of above-mentioned steps, the function to automatically adjust to the negative pressure in connecting pipe 1 is realized
Can, reduce the working strength of medical staff；And the present apparatus can be detected in advance when the present apparatus is run by detection module
Leakproofness ensures that the safety of product before surgery, improves the success rate of operation, and after each adjust again
The leakproofness of the verifying present apparatus also achieves the reality to elastomeric pad 2 to improve the stability in present apparatus use process
When monitor, convenient in time replacement or maintenance elastomeric pad 2.The present apparatus can be mentioned clearly by the first warning light and the second warning light
Show the problems of user's present apparatus, can be repaired in time by component of the maintenance door to aging or damage or more
It changes, to extend the service life of the present apparatus.The present apparatus after a period of use, need through maintenance door to filter membrane 7
On dust or impurity cleared up, so that it is guaranteed that the air-flow at 7 both ends of filter membrane can flow smoothly.
The above are merely the embodiment of the present invention, the common sense such as well known specific structure and/or characteristic are not made herein in scheme
Excessive description.It, without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art
Several modifications and improvements are made, these also should be considered as protection scope of the present invention, these all will not influence what the present invention was implemented
Effect and patent practicability.The scope of protection required by this application should be based on the content of the claims, in specification
The records such as specific embodiment can be used for explaining the content of claim.
Claims (6)
1. the automatic pressure-reducing regulating device of left heart drainage-tube, it is characterised in that: the connecting pipe including Y type, the connecting pipe
One end in be equipped with elastomeric pad, shaft and micromotor, the elastomeric pad is removably attachable in connecting pipe, described
The periphery of elastomeric pad and the inner wall of connecting pipe fit, and traction rope is connected between the elastomeric pad and shaft, described
One end of shaft and the output axis connection of micromotor, the micromotor is fixed on outside connecting pipe, outside the connecting pipe
It is additionally provided with the first warning light；
Pressure acquisition module, infrared induction module, memory module, processing module and control mould are additionally provided in the connecting pipe
Block,
The pressure acquisition module is for detecting the pressure value in connecting pipe and sending pressure value to memory module；
The infrared induction module is used to detect the displacement of elastomeric pad and sends displacement to memory module；
The memory module is used to store pressure preset, the pressure value of the connecting pipe of pressure acquisition module acquisition, infrared sense
The displacement for the elastomeric pad for answering module to send；
The processing module with 0 for comparing pressure value with pressure preset, displacement, when pressure value is more than or equal to pressure
When power preset value and displacement are equal to 0, the processing module issues open signal to control module；When pressure value is less than pressure
When preset value and displacement are greater than 0, the processing module issues shutdown signal to control module；
The control module opens micromotor and the first warning light when receiving the open signal of processing module sending；The control
Molding block closes micromotor and the first warning light when receiving the shutdown signal of processing module sending.
2. the automatic pressure-reducing regulating device of left heart drainage-tube according to claim 1, it is characterised in that: the connecting pipe
On be additionally provided with detection module and the second warning light, the detection module is used to detect the sealing of elastomeric pad Yu connecting pipe inner wall
Property simultaneously will test result and be sent to processing module, and the control module is also used to control opening or closing for the second warning light, when
When testing result is that unsealing is complete, processing module issues the signal for opening the second warning light to control module；Work as testing result
When to seal intact, processing module issues the signal for closing the second warning light to control module.
3. the automatic pressure-reducing regulating device of left heart drainage-tube according to claim 1, it is characterised in that: remote in the shaft
One end from micromotor is connected with torsional spring, and the one end of torsional spring is fixed in connecting pipe.
4. the automatic pressure-reducing regulating device of left heart drainage-tube according to claim 1, it is characterised in that: the connecting pipe
On be additionally provided with filter membrane, the filter membrane is located at one end of elastomeric pad.
5. the automatic pressure-reducing regulating device of left heart drainage-tube according to claim 4, it is characterised in that: the connecting pipe
On be additionally provided with maintenance door.
6. the automatic pressure-reducing regulating device of left heart drainage-tube described in any one of -5 according to claim 1, it is characterised in that:
The elastomeric pad uses inert metal piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811301999.8A CN109303937B (en) | 2018-11-02 | 2018-11-02 | Automatic decompression adjustment device for left heart drainage tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811301999.8A CN109303937B (en) | 2018-11-02 | 2018-11-02 | Automatic decompression adjustment device for left heart drainage tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109303937A true CN109303937A (en) | 2019-02-05 |
| CN109303937B CN109303937B (en) | 2023-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811301999.8A Expired - Fee Related CN109303937B (en) | 2018-11-02 | 2018-11-02 | Automatic decompression adjustment device for left heart drainage tube |
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| CN207870908U (en) * | 2017-05-04 | 2018-09-18 | 重庆医科大学附属第三医院(捷尔医院） | Sperm collection device |
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