CN112309216A - Generating system capable of continuously outputting pulsating flow - Google Patents
Generating system capable of continuously outputting pulsating flow Download PDFInfo
- Publication number
- CN112309216A CN112309216A CN202011029769.8A CN202011029769A CN112309216A CN 112309216 A CN112309216 A CN 112309216A CN 202011029769 A CN202011029769 A CN 202011029769A CN 112309216 A CN112309216 A CN 112309216A
- Authority
- CN
- China
- Prior art keywords
- piston
- lead screw
- motor
- pulsating flow
- flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/28—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for medicine
- G09B23/30—Anatomical models
- G09B23/303—Anatomical models specially adapted to simulate circulation of bodily fluids
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Medicinal Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Algebra (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Medical Informatics (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention provides a generation system capable of continuously outputting pulsating flow. Relates to the field of biomedical experiments and tests; the system hardware designed by the invention mainly comprises a pump body and a valve body, the software control system mainly comprises a set of flow control method, and the pump body mainly comprises a piston, a lead screw and a guide rod. The piston divides the pump body into a left part and a right part which are respectively provided with an upper water inlet, a lower water inlet and a water outlet. Meanwhile, the piston moves left and right under the combined action of the screw rod and the guide rod; through the left and right movement of the piston and the combination of an external electromagnetic valve, the output end of the system can continuously output different flow waveforms so as to meet the requirements on flow output, particularly biological experiment output. On one hand, the invention can output different flow waveforms and meet the output requirements of different flow waveforms; on the other hand, the specific flow waveform can be continuously output for a long time, and the selection is provided for the test requirement of the fluid for the long time.
Description
Technical Field
The invention relates to the field of biomedical experiments and tests, in particular to a generation system capable of continuously outputting pulsating flow.
Background
Under the action of the heart of a human body, a large amount of pulsating flow occurs in a cardiovascular system, and the current cardiovascular system diseases gradually become the main cause of premature morbidity and mortality of residents in China, and the occurrence of the diseases causes a certain burden on national economic development, so that the study on the cardiovascular diseases and the reduction of the morbidity of related diseases are particularly important.
In vitro experiments are an important disease mechanism research method, and have important significance in clinical disease research and understanding, but a pulsatile flow generating system which can meet the cycle test applied to the experimental field does not exist so far, so that a device which can simulate pulsatile flow in a cardiovascular system has important significance in disease research.
Disclosure of Invention
In view of the above problems, the present invention provides a generation system capable of continuously outputting pulsating flow; the device can well simulate the pulsating flow characteristics in the cardiovascular system; the flow-time curve of the output pulsating flow is adjusted in an individualized way; the corresponding flow output can be provided uninterruptedly for a long time; the real physiological environment of the human body is simulated as much as possible.
The technical scheme of the invention is as follows: a generation system capable of continuously outputting pulsating flow comprises a transmission system, wherein the transmission system comprises a motor (1), a lead screw (2) and a piston (3), one end of the motor (1) is connected to the lead screw (2) through a coupling, a nut (5) matched with the lead screw is arranged on the outer wall of the lead screw (2), and the lead screw (2) is arranged on the piston (3) in a penetrating manner through the nut (5);
a guide rod (4) parallel to the screw rod (2) is arranged on the piston (3) in a penetrating way.
Furthermore, the device also comprises a pump body arranged outside the screw rod (2), the piston (3) and the guide rod (4),
the pump body include pump case (7) of middle-end, settle end cover (8) at pump case (7) both ends 4 fastening screw (9) have been installed to the outside of pump body, 4 the both ends of fastening screw (9) are respectively through the bolt fastening on end cover (8).
Furthermore, the diameter of the inner wall of the pump shell (7) is larger than that of the outer wall of the piston (3), and a sealing ring (6) is arranged at the joint of the piston (3) and the pump shell (7);
bearings for fixing the lead screw (2) are respectively arranged on the inner walls of the end covers (8) at the two ends, and the lead screw (2) close to one end of the motor (1) penetrates through a round hole formed in the end cover (8) through the connected bearings to be connected with the motor (1);
and optical axis holes for fixing the guide rods (4) are further respectively arranged on the inner walls of the end covers (8) at the two ends, and the two ends of each guide rod (4) are respectively inserted into the optical axis holes at the two ends.
Furthermore, a limit switch (10) is also arranged on the outer wall of an end cover (8) close to one end of the motor (1), a stepped shaft (17), a spring (18) for controlling the stepped shaft (17) and a linear bearing (19) arranged outside the stepped shaft (17) and the spring (18) are arranged on the inner wall of the end cover (8) and the position corresponding to the limit switch (10);
a small hole is arranged at the position of the limit switch (10) corresponding to the stepped shaft (17), and a bulge is also arranged on the limit switch (10).
Furthermore, an upper round hole and a lower round hole are respectively formed in the two end covers (8), two first guide pipes are respectively arranged in the two upper round holes, and the two first guide pipes are respectively connected to the test slot (14) and the circulating slot (15) through the test valve (12);
two second guide pipes are respectively arranged in the two lower round holes and are connected to a water supply tank (13) through a water supply valve (11);
a test section (16) is connected between the first one of the conduits and the test slot (14).
Furthermore, temperature control systems are arranged in the water supply groove (13), the test groove (14) and the circulating groove (15), and each temperature control system comprises a heating device and a temperature sensor.
Furthermore, a support rod is arranged below the motor (1), two support rods are arranged below the end covers (8) at the two ends, and a base is fixedly arranged below the three support rods.
The invention has the beneficial effects that: according to the invention, through the combination electromechanical system, the individualized flow characteristic curve is taken as input, and the characteristic curve is analyzed and further converted into a driving signal of the motor, so that the individualized pulsating flow is output; in addition, the change of a flow channel when a piston in the system reciprocates is realized through the control of a limit switch on the end cover, and the continuous output of pulsating flow is further realized; the invention is matched with related cardiovascular or cardiovascular simulating internal implants, can realize the effect similar to the real physiological characteristics of human bodies, and provides support and help for experiments and test research in the medical field.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic illustration of the transmission system of the present invention;
FIG. 3 is a schematic view of the pump body of the present invention;
FIG. 4 is a schematic view of the construction of the piston and pump housing junction of the present invention;
FIG. 5 is a schematic view of the construction of the end cap in the pump body of the present invention;
FIG. 6 is a schematic diagram of an analysis of the personalized flow characteristic curve of the control system according to the present invention;
FIG. 7 is a schematic view of a test process flow path of the present invention;
in the figure, 1 is a motor, 2 is a screw rod, 3 is a piston, 4 is a guide rod, 5 is a nut, 6 is a seal ring, 7 is a pump housing, 8 is an end cover, 9 is a fastening screw, 10 is a limit switch, 11 is a water supply valve, 12 is a test valve, 13 is a water supply tank, 14 is a test tank, 15 is a circulation tank, 16 is a test section, 17 is a stepped shaft, 18 is a spring, and 19 is a linear bearing.
Detailed Description
In order to more clearly illustrate the technical solution of the present invention, the following detailed description is made with reference to the accompanying drawings:
as shown in fig. 1-5, a generation system capable of continuously outputting pulsating flow comprises a transmission system, wherein the transmission system comprises a motor (1), a lead screw (2) and a piston (3), one end of the motor (1) is connected to the lead screw (2) through a coupling, a nut (5) matched with the lead screw is arranged on the outer wall of the lead screw (2), and the lead screw (2) is arranged on the piston (3) through the nut (5); the motor (1) drives the screw rod (2) to rotate through the coupler, and the piston (3) is controlled by the motor (1) to move for a distance through the screw rod and the nut; the moving distance and the speed of the piston (3) are obtained by calculating a flow characteristic curve through a control system;
the piston (3) consists of a moving part and a sealing part, wherein the moving part is internally provided with a nut (5) matched with the screw rod (2), and the sealing parts are positioned at two sides of the moving part and are respectively sealed by a sealing ring (6);
a guide rod (4) parallel to the screw rod (2) is arranged on the piston (3) in a penetrating way.
Furthermore, the device also comprises a pump body arranged outside the screw rod (2), the piston (3) and the guide rod (4),
the pump body comprises a pump shell (7) at the middle end and end covers (8) arranged at the two ends of the pump shell (7), 4 fastening screws (9) are arranged outside the pump body, and the two ends of the 4 fastening screws (9) are respectively fixed on the end covers (8) through bolts;
the inner space of the pump shell (7) is divided into two unconnected areas by the piston (3), the piston (3) is isolated from the inner part of the pump shell (7) by the sealing ring (6), and meanwhile, the end covers (8) are arranged at two ends of the pump shell (7) and are clamped oppositely by the fastening screw rods (9); so as to ensure the stable movement of the piston (3) in the pump housing (7).
Furthermore, the diameter of the inner wall of the pump shell (7) is larger than that of the outer wall of the piston (3), and a sealing ring (6) is arranged at the joint of the piston (3) and the pump shell (7);
bearings for fixing the lead screw (2) are respectively arranged on the inner walls of the end covers (8) at the two ends, and the lead screw (2) close to one end of the motor (1) penetrates through a round hole formed in the end cover (8) through the connected bearings to be connected with the motor (1);
optical axis holes for fixing the guide rods (4) are further formed in the inner walls of the end covers (8) at the two ends respectively, and the two ends of each guide rod (4) are inserted into the optical axis holes at the two ends respectively;
wherein, the inner sides of the end covers (8) are respectively provided with bearings and smooth shaft holes which are used for arranging and fixing the lead screw (2) and the guide rod (4); meanwhile, two openings are arranged on the radial opposite sides of the end cover (8), and the end cover of the end cover (8) forms an upper outlet channel and a lower outlet channel and a fluid inlet channel respectively for the openings in the radial direction.
Furthermore, a limit switch (10) is also arranged on the outer wall of an end cover (8) close to one end of the motor (1), a stepped shaft (17), a spring (18) for controlling the stepped shaft (17) and a linear bearing (19) arranged outside the stepped shaft (17) and the spring (18) are arranged on the inner wall of the end cover (8) and the position corresponding to the limit switch (10);
a small hole is formed at the position of the limit switch (10) corresponding to the stepped shaft (17), and a bulge is also arranged on the limit switch (10);
a limit switch (10) arranged on an end cover (8) close to one end of the motor (1) is triggered by a mechanism consisting of a stepped shaft (17), a spring (18) and a linear bearing (19) and is used for monitoring the moving position of the piston (3).
Preferably, after the limit switch (10) is triggered, the rotation direction of the motor (1) is changed, the moving direction of the piston (3) is changed, further, the working state of the valve group is changed, a flow channel of the system is changed, the volume reduction part in the pump shell (7) is always ensured to be a fluid outlet, and the pulsating flow is sent to the test slot (14) through the test section (16); the volume increasing part in the pump casing (7) is an inlet of fluid, and variable volume flow is sucked from the circulating groove (15).
Furthermore, an upper round hole and a lower round hole are respectively formed in the two end covers (8), two first guide pipes are respectively arranged in the two upper round holes, and the two first guide pipes are respectively connected to the test slot (14) and the circulating slot (15) through the test valve (12);
two second guide pipes are respectively arranged in the two lower round holes and are connected to a water supply tank (13) through a water supply valve (11);
a test section (16) is connected between the first one of the conduits and the test slot (14);
the valve group of the invention consists of a water supply valve (11) and a test valve (12), and can be matched with a limit switch (10) on an end cover (8) to control different inlet and outlet conditions according to program requirements.
Furthermore, temperature control systems are arranged in the water supply groove (13), the test groove (14) and the circulating groove (15), and each temperature control system comprises a heating device and a temperature sensor; the function is to simulate the physiological environment temperature of human body by controlling the temperature in the liquid storage tank;
the liquid storage tank is composed of a water supply tank (13), a test tank (14) and a circulating tank (15), and meanwhile flow sharing can be achieved according to test requirements.
Furthermore, a support rod is arranged below the motor (1), two support rods are arranged below the end covers (8) at the two ends, and a base is fixedly arranged below the three support rods.
In addition, the invention processes the personalized flow characteristic curve, disperses the curve to obtain the output flow on different dispersion intervals, and further realizes the output of the personalized flow characteristic curve by controlling the rotation angle and the angular speed of the stepping motor.
In this embodiment, the adopted motor (1) is a 86 stepping motor, the motor (1) is connected with the lead screw (2) through a coupler, bearings are arranged at two ends of the lead screw (2), the bearing holes are arranged at the circle center positions of the end covers (8) at two sides, the effective length of the guide rod (9) is the same as the thread length of the lead screw (2), and in this embodiment, the outer diameter d of the lead screw (2) is the same as the outer diameter of the lead screw (2)1Is 18mm, the pitch p1Is 4mm, the diameter d of the guide rod (4)2Is 13 mm; the screw rod (2) is provided with a nut (5) matched with the screw rod, the nut (5) is positioned in the center of the piston, and the linear motion of the piston (3) is realized by the rotation of the screw rod (2) and the limitation of the guide rod (4).
The inner diameter D of the pump shell (7) adopted in the embodiment is 115mm, the piston (3) and the pump shell (7) are in interference fit by the sealing ring (6), fluid in the pump shell (7) is divided into two parts, in the embodiment, the lead screw (2) rotates for one circle, and the volume V of the flow discharged or sucked by the pump body is as follows:
in combination with the subdivision number n of the stepping motor of 400 in the present embodiment, the flow volume V sucked or discharged by the pump body at each step angle of the stepping motorstepComprises the following steps:
by combining formulas I and II, the flow division value of the generation system can be further improved by changing related structural parameters; further, as shown in fig. 6, the personalized flow characteristic curve is differentiated, the flow characteristic curve is discretized according to a certain time step, and the flow rate V at the middle time of the time step Δ t is obtainedtimeFurther determining the total flow Vp in each time stepstepComprises the following steps:
Vpstep＝Δt·Vtime
and further converting the flow information in each time step into a control signal of the motor (1) to realize the output of the pulsating flow.
The pump body structure in the embodiment is shown in fig. 3, and preferably, the end covers (8) on two sides of the pump body are oppositely fastened through fastening screws (9) arranged outside the pump shell (7), so that the smooth operation of the piston (3) in the pump shell (7) under the action of the motor (1) is ensured.
The structure of the piston (3) in the embodiment is as shown in fig. 4, and the piston is composed of a moving part and a sealing part, wherein the screw rod (2) in the moving part and a nut (5) matched with the screw rod (2) are arranged on two sides of the moving part, and the sealing part is respectively sealed by a sealing ring (6).
The end cover (8) structure described in this embodiment is as shown in fig. 5, the stepped shaft (17), the spring (18), the linear bearing (19) and the limit switch (10) constitute a position trigger system, when the piston (3) moves to an end cover on one side, the stepped shaft (17) is pushed to move, the limit switch (10) is triggered, the system receives a limit signal, the test valve (12) is triggered first, the flow direction is changed, the rotation direction of the motor (1) is changed at the same time, the movement direction of the piston (3) is further changed, and after the piston (3) leaves, the stepped shaft (17) returns to the original position under the action of the spring (18).
The overall implementation process of the embodiment is as follows:
for convenience of description, the side close to the motor (1) is called a near end, and the side far away from the motor (1) is called a far end; the upper and lower outlets of the proximal end cover (8) are respectively defined as a and b, and the upper and lower outlets of the distal end cover (8) are respectively defined as c and d.
Firstly, pumping water into a pump and exhausting air; taking the piston (3) moving from the near end to the far end of the motor (1) as an example, the test liquid enters the left end of the piston pump body from the water supply groove (13), and at the moment, the test valve (12) acts to close a and open c; simultaneously, the water supply valve (11) is actuated to open b and close d; the motor (1) rotates simultaneously, the piston (3) moves, and at the moment, the test liquid in the water supply tank (13) enters the pump body under the action of pressure; similarly, when the piston (3) moves to the far end, the limit switch (10) is triggered, the motor (1) rotates reversely, at the moment, a is opened, b is closed, c is closed, d is opened, the piston (3) moves from the far end to the near end, test liquid enters the right end of the piston (3) in the pump body from the water supply groove (13), and meanwhile, gas is discharged from a at the left end under the pushing action of the piston (3), so that the exhaust process is realized; the test liquid is finally filled into the pump body by reciprocating in the way.
Secondly, carrying out a testing process, wherein b and d are completely closed at the moment, when the piston (3) moves from the near end to the far end, the testing valve (12) acts to form a flow channel in the figure 7-1, testing liquid at the right end of the piston (3) is sent into the testing groove (14) through the testing section, and meanwhile, equal amount of testing liquid is sucked from the circulating groove (15) at the left end; similarly, when the piston (3) moves to the limit position, the limit switch (10) is triggered, the motor (1) rotates reversely, the piston (3) moves from the far end to the near end, the test valve (12) acts to form a flow channel as shown in fig. 7-2, the test liquid is sent into the test slot (14) from the left end through the test section (16), and meanwhile, the right end sucks the same amount of liquid from the circulating slot (15); the circulation is carried out, so that the continuous output of the pulsating flow is realized.
Claims (7)
1. A system for generating a continuous output pulsating flow, characterized in that: the device comprises a transmission system, wherein the transmission system comprises a motor (1), a lead screw (2) and a piston (3), one end of the motor (1) is connected to the lead screw (2) through a coupler, a nut (5) matched with the lead screw is arranged on the outer wall of the lead screw (2), and the lead screw (2) is arranged on the piston (3) in a penetrating manner through the nut (5);
a guide rod (4) parallel to the screw rod (2) is arranged on the piston (3) in a penetrating way.
2. A system for generating a sustainable pulsating flow as claimed in claim 1, wherein: also comprises a pump body arranged outside the screw rod (2), the piston (3) and the guide rod (4),
the pump body include pump case (7) of middle-end, settle end cover (8) at pump case (7) both ends 4 fastening screw (9) have been installed to the outside of pump body, 4 the both ends of fastening screw (9) are respectively through the bolt fastening on end cover (8).
3. A system for generating a sustainable output pulsating flow as claimed in claims 1 and 2, wherein: the diameter of the inner wall of the pump shell (7) is larger than that of the outer wall of the piston (3), and a sealing ring (6) is arranged at the joint of the piston (3) and the pump shell (7);
bearings for fixing the lead screw (2) are respectively arranged on the inner walls of the end covers (8) at the two ends, and the lead screw (2) close to one end of the motor (1) penetrates through a round hole formed in the end cover (8) through the connected bearings to be connected with the motor (1);
and optical axis holes for fixing the guide rods (4) are further respectively arranged on the inner walls of the end covers (8) at the two ends, and the two ends of each guide rod (4) are respectively inserted into the optical axis holes at the two ends.
4. A system for generating a sustainable output pulsating flow as claimed in claims 2 and 3, wherein: a limit switch (10) is further arranged on the outer wall of an end cover (8) close to one end of the motor (1), a stepped shaft (17), a spring (18) for controlling the stepped shaft (17) and a linear bearing (19) arranged outside the stepped shaft (17) and the spring (18) are arranged on the inner wall of the end cover (8) and the position corresponding to the limit switch (10);
a small hole is arranged at the position of the limit switch (10) corresponding to the stepped shaft (17), and a bulge is also arranged on the limit switch (10).
5. A system for generating a sustainable pulsating flow as claimed in claim 2, wherein: an upper round hole and a lower round hole are respectively formed in the two end covers (8), two first guide pipes are respectively arranged in the two upper round holes, and the two first guide pipes are respectively connected to the test slot (14) and the circulating slot (15) through the test valve (12);
two second guide pipes are respectively arranged in the two lower round holes and are connected to a water supply tank (13) through a water supply valve (11);
a test section (16) is connected between the first one of the conduits and the test slot (14).
6. The system for generating a sustainable output pulsating flow as claimed in claim 4, wherein: the water supply tank (13), the test tank (14) and the circulating tank (15) are internally provided with a temperature control system, and the temperature control system comprises a heating device and a temperature sensor.
7. A system for generating a sustainable pulsating flow as claimed in claim 1, wherein: a support rod is arranged below the motor (1), two support rods are arranged below the end covers (8) at the two ends, and a base is fixedly arranged below the three support rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011029769.8A CN112309216A (en) | 2020-09-27 | 2020-09-27 | Generating system capable of continuously outputting pulsating flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011029769.8A CN112309216A (en) | 2020-09-27 | 2020-09-27 | Generating system capable of continuously outputting pulsating flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112309216A true CN112309216A (en) | 2021-02-02 |
Family
ID=74488441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011029769.8A Pending CN112309216A (en) | 2020-09-27 | 2020-09-27 | Generating system capable of continuously outputting pulsating flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112309216A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113393749A (en) * | 2021-07-14 | 2021-09-14 | 兰州理工大学 | Blood pulsating flow simulation device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5284423A (en) * | 1991-02-27 | 1994-02-08 | University Hospital (London) Development Corporation | Computer controlled positive displacement pump for physiological flow simulation |
| US20090077957A1 (en) * | 2004-08-27 | 2009-03-26 | Stephen Noble | Hydraulic drive system and method of operating a hydraulic drive system |
| CN105784341A (en) * | 2016-03-04 | 2016-07-20 | 浙江省计量科学研究院 | Standard device for checking flow and differential pressure of constant flow valve and checking method |
| CN111155844A (en) * | 2020-02-15 | 2020-05-15 | 今创集团股份有限公司 | Safety door electromagnetic lock |
| AU2019101734A4 (en) * | 2019-01-04 | 2020-07-02 | The Second Affiliated Hospital Of Pla Army Medical University | Dynamic test phantom simulating cardiovascular motion for quality evaluation of CT imaging, and its control principle and quality testing method |
-
2020
- 2020-09-27 CN CN202011029769.8A patent/CN112309216A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5284423A (en) * | 1991-02-27 | 1994-02-08 | University Hospital (London) Development Corporation | Computer controlled positive displacement pump for physiological flow simulation |
| US20090077957A1 (en) * | 2004-08-27 | 2009-03-26 | Stephen Noble | Hydraulic drive system and method of operating a hydraulic drive system |
| CN105784341A (en) * | 2016-03-04 | 2016-07-20 | 浙江省计量科学研究院 | Standard device for checking flow and differential pressure of constant flow valve and checking method |
| AU2019101734A4 (en) * | 2019-01-04 | 2020-07-02 | The Second Affiliated Hospital Of Pla Army Medical University | Dynamic test phantom simulating cardiovascular motion for quality evaluation of CT imaging, and its control principle and quality testing method |
| CN111155844A (en) * | 2020-02-15 | 2020-05-15 | 今创集团股份有限公司 | Safety door electromagnetic lock |
Non-Patent Citations (2)
| Title |
|---|
| 刘双双等: "生理脉动流模拟***设计与仿真", 《医用生物力学》 * |
| 李晓阳等: "脉动流实验装置研究", 《北京生物医学工程》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113393749A (en) * | 2021-07-14 | 2021-09-14 | 兰州理工大学 | Blood pulsating flow simulation device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108682255B (en) | Pulsation heart model and pulsation control method thereof | |
| CN105673621B (en) | A kind of aviation actuator reciprocation sealing multi-state comprehensive simulation test system | |
| CN112309216A (en) | Generating system capable of continuously outputting pulsating flow | |
| CN111429787B (en) | Artificial blood pump in-vitro simulation circulating system | |
| US6065289A (en) | Fluid displacement apparatus and method | |
| CN103878764A (en) | Three-degree-of-freedom pneumatic combination drive parallel platform | |
| CN104346987A (en) | Heart chamber simulator driving mechanism | |
| CN104157199A (en) | Using method of pulse signal analogue simulation generator | |
| US4443163A (en) | Fluid motor or pump | |
| CN111462604A (en) | High-precision heart pulsation generation system | |
| Lanzarone et al. | A new pulsatile volumetric device with biomorphic valves for the in vitro study of the cardiovascular system | |
| CN205981729U (en) | A simulation cavity room for external simulation blood circulation | |
| CN113674600B (en) | Left atrium controllable extracorporeal simulation circulation system | |
| CN113925647A (en) | Artificial heart valve extracorporeal circulation pulsating flow experimental system and experimental method | |
| Taylor et al. | Automation of the harvard apparatus pulsatile blood pump | |
| EP2779144B1 (en) | Device for simulating blood flow | |
| CN206864054U (en) | With early warning and the radial artery puncturing of sustainable running exercise model | |
| CN108775296B (en) | Pressure control device and pressure increasing and decreasing control method | |
| CN203516104U (en) | Dynamic leakage equivalent observation experiment table for working medium in rotary compressor | |
| Dryden et al. | Numerical investigation of a biomimetic elastic valve for microfluidic pumping | |
| CN106847039A (en) | With early warning and the radial artery puncturing of sustainable running exercise model | |
| CN203433728U (en) | Heart cavity simulator driving mechanism | |
| CN208476315U (en) | The lung function instrument tester of gaseous state in a kind of simulation Human Lung | |
| CN111749880A (en) | Blood pump data testing system and testing method based on big data | |
| Ivanov | A model of extracorporeal perfusion pump: Left heart camera operation modeling and simulation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210202 |