CN118837092B - Quick-change type artificial heart valve detection testing machine - Google Patents
Quick-change type artificial heart valve detection testing machine Download PDFInfo
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- CN118837092B CN118837092B CN202411298772.8A CN202411298772A CN118837092B CN 118837092 B CN118837092 B CN 118837092B CN 202411298772 A CN202411298772 A CN 202411298772A CN 118837092 B CN118837092 B CN 118837092B
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- 238000012360 testing method Methods 0.000 title claims abstract description 123
- 210000003709 heart valve Anatomy 0.000 title claims abstract description 32
- 238000001514 detection method Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 175
- 230000002861 ventricular Effects 0.000 claims abstract description 159
- 230000007246 mechanism Effects 0.000 claims abstract description 55
- 239000007788 liquid Substances 0.000 claims abstract description 40
- 238000004088 simulation Methods 0.000 claims abstract description 15
- 230000010349 pulsation Effects 0.000 claims abstract description 7
- 210000001367 artery Anatomy 0.000 claims abstract description 5
- 238000003384 imaging method Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 11
- 230000008859 change Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000000541 pulsatile effect Effects 0.000 description 4
- 238000009661 fatigue test Methods 0.000 description 3
- 239000000645 desinfectant Substances 0.000 description 2
- 230000002526 effect on cardiovascular system Effects 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/36—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Pathology (AREA)
- Immunology (AREA)
- Biochemistry (AREA)
- Cardiology (AREA)
- Veterinary Medicine (AREA)
- Heart & Thoracic Surgery (AREA)
- Transplantation (AREA)
- Public Health (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
- Animal Behavior & Ethology (AREA)
- Biomedical Technology (AREA)
- Vascular Medicine (AREA)
- External Artificial Organs (AREA)
Abstract
The invention relates to a quick-change type artificial heart valve detection testing machine, which comprises a ventricular simulation mechanism, an arterial simulation mechanism, a return pipe, a valve quick-change mechanism and a pulsation pump, wherein the ventricular simulation mechanism comprises a ventricular cavity; the artery simulation mechanism comprises an artery cavity; the return pipe is communicated with the inner cavity of the ventricular cavity and the inner cavity of the arterial cavity; the valve quick-change mechanism comprises a ventricular water storage cavity arranged on a ventricular cavity, an arterial water storage cavity arranged on an arterial cavity and a quick-change cavity connected between the ventricular water storage cavity and the arterial water storage cavity, wherein flashboards are respectively arranged at two sides of the quick-change cavity, and a valve carrier is arranged in the quick-change cavity; the pulsation pump is connected with the ventricular cavity and is used for providing power for test liquid in the test machine. The invention can realize quick replacement of products in the test process, has convenient and simple operation, effectively reduces the loss of test liquid, reduces the operation difficulty, shortens the test time and effectively improves the test efficiency of the products.
Description
Technical Field
The invention belongs to the technical field of fatigue testing machines, and particularly relates to a quick-change artificial heart valve detection testing machine.
Background
Before a cardiovascular implant such as a heart valve prosthesis, a vascular stent and the like is put into use, the service life of the cardiovascular implant needs to be evaluated, and an in-vitro test of a fatigue testing machine, namely a detection testing machine, is an important evaluation means.
The existing detection testing machine is generally of a two-section split structure, namely, comprises an inflow cavity and an outflow cavity, wherein the inflow cavity is directly assembled on a ventricular cavity, and the outflow cavity is directly assembled on an arterial cavity. In the process of performing fatigue test on a prosthetic heart valve (hereinafter referred to as a product), the test machine with the structure needs to empty test liquid in a test system when the tested product needs to be replaced, so that the loss of the test liquid is easy to cause, the whole replacement process is complex in steps, the test time is directly prolonged, and the test efficiency is influenced.
Disclosure of Invention
The invention aims to provide a quick-change artificial heart valve detection testing machine so as to solve the problem of large test liquid loss.
The quick-change artificial heart valve detection testing machine is realized by the following steps:
a quick-change artificial heart valve detection testing machine comprises
A ventricular analog mechanism comprising a ventricular cavity;
an arterial simulation mechanism comprising an arterial lumen;
a return tube communicating the lumen of the ventricular cavity with the lumen of the arterial cavity;
The valve quick-change mechanism can be communicated with the inner cavity of the ventricular cavity and the inner cavity of the arterial cavity, and comprises a ventricular water storage cavity arranged on the ventricular cavity, an arterial water storage cavity arranged on the arterial cavity and a quick-change cavity connected between the ventricular water storage cavity and the arterial water storage cavity, wherein flashboards are respectively arranged at two sides of the quick-change cavity, and a valve carrier is arranged in the quick-change cavity;
a pulsatile pump is coupled to the ventricular chamber for powering test fluid in the testing machine.
Furthermore, the outer walls of the ventricular water storage cavity and the arterial water storage cavity are respectively provided with a lock catch, the outer wall of the quick-change cavity is provided with a lock catch matched with the lock catch, and the lock catch can be locked with the corresponding lock catch;
The ventricular water storage cavity and the arterial water storage cavity are respectively provided with an exhaust port, and the exhaust ports are provided with exhaust connectors;
the ventricular water storage cavity and the arterial water storage cavity are respectively provided with a water drain port, and a water drain joint is arranged on the water drain port;
Pressure sensors are respectively arranged on the ventricular water storage cavity and the arterial water storage cavity.
Further, the end of the ventricular water storage cavity facing the quick-change cavity and the end of the arterial water storage cavity facing the quick-change cavity are both provided with water storage cavity clamping blocks, and the flashboard is arranged between the water storage cavity clamping blocks and the corresponding ventricular water storage cavity or the arterial water storage cavity;
The flashboard is provided with a water passing hole, and when the water passing hole is staggered with an inner hole of the quick-change cavity, the quick-change cavity is separated from a ventricular water storage cavity or an arterial water storage cavity at the side where the flashboard is positioned;
the two ends of the flashboard are respectively provided with a stop block;
One end of the flashboard is provided with a handle.
Further, a ventricular compliance cavity communicated with the inner cavity of the ventricular cavity is arranged at the top of the ventricular cavity;
an arterial compliance cavity communicated with the inner cavity of the arterial cavity is arranged at the top of the arterial cavity;
The tops of the ventricular compliance cavity and the arterial compliance cavity are respectively provided with an exhaust port and a water filling port;
an exhaust valve is arranged on the exhaust port, and a water filling port sealing cover is arranged on the water filling port.
Further, the inner cavities of the ventricular cavity and the arterial cavity are respectively provided with a one-way valve;
the check valve is arranged on a corresponding check valve seat, and the check valve seat is arranged in a corresponding inner cavity from the side surfaces of the ventricular cavity and the arterial cavity;
The one-way valve can be installed in two directions.
Further, the return pipe is of a two-section detachable telescopic pipe structure;
The reflux pipe comprises an inner pipe connected with the ventricular cavity and an outer pipe connected with the arterial cavity, and the free end of the inner pipe extends into the free end of the outer pipe and can move relatively;
A pressure control valve is arranged between the inner tube and the ventricular cavity.
Further, the arterial cavity is movable relative to the ventricular cavity;
The bottom of arterial cavity installs the slider, slider sliding fit is on the slide rail.
Further, regulating valves extending into corresponding inner cavities are respectively arranged on the side surfaces of the ventricular cavity and the arterial cavity;
the bottom of the inner cavity of the ventricular cavity and the bottom of the inner cavity of the arterial cavity are respectively provided with a heating block;
drain ports are respectively arranged on the ventricular cavity and the arterial cavity,
And a drainage joint is arranged at the water outlet.
Furthermore, the ventricular cavity and the arterial cavity are respectively provided with an observation window, and an imaging mechanism is correspondingly arranged outside the observation windows;
the imaging mechanism includes a camera opposite the viewing window;
and a light source is arranged at the periphery of the observation window.
Further, the pulsation pump comprises a motor and a connecting cavity assembled at the output end of the motor, wherein the connecting cavity is connected with the ventricular cavity, and a diaphragm is arranged between the inner cavity of the connecting cavity and the inner cavity of the ventricular cavity;
The motor is arranged in an outer housing through a motor bracket;
the exhaust port and the water outlet are respectively arranged on the connecting cavity, the exhaust port is provided with an exhaust joint, and the water outlet is provided with a water discharge joint.
After the technical scheme is adopted, the invention has the following beneficial effects:
According to the valve carrier quick-change device, the cavity for placing the valve carrier is of a three-section quick-change structure, the quick-change cavity can be separated from the ventricular water storage cavity and the arterial water storage cavity at two ends of the valve carrier by the flashboard in the test process, and a test product can be replaced by only detaching the quick-change cavity, so that the valve carrier quick-change device is convenient and simple to operate, the loss of test liquid is effectively reduced, the operation difficulty is reduced, the test time is shortened, and the test efficiency of the product is effectively improved.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a block diagram of a quick-change prosthetic heart valve testing machine in accordance with a preferred embodiment of the present invention;
FIG. 2 is a block diagram of a first view of a valve quick change mechanism of a quick change prosthetic heart valve testing machine in accordance with a preferred embodiment of the present invention;
FIG. 3 is a block diagram of a second view of the valve quick change mechanism of the quick change prosthetic heart valve testing machine of the preferred embodiment of the present invention;
FIG. 4 is a cross-sectional view of a valve quick change mechanism of a quick change prosthetic heart valve testing machine in accordance with a preferred embodiment of the present invention;
FIG. 5 is a block diagram of a shutter I of a quick-change prosthetic heart valve testing machine in accordance with a preferred embodiment of the present invention;
FIG. 6 is a block diagram of a ventricular simulation mechanism of a quick-change prosthetic heart valve testing machine in accordance with a preferred embodiment of the present invention;
FIG. 7 is a cross-sectional view of a ventricular simulation mechanism of a quick-change prosthetic heart valve testing machine in accordance with a preferred embodiment of the present invention;
FIG. 8 is a block diagram of an artery simulation mechanism and imaging mechanism of a quick-change prosthetic heart valve testing machine in accordance with a preferred embodiment of the present invention;
FIG. 9 is a cross-sectional view of an artery simulation mechanism and imaging mechanism of a quick-change prosthetic heart valve testing machine in accordance with a preferred embodiment of the present invention;
FIG. 10 is a block diagram of the pulsatile pump of the quick-change prosthetic heart valve testing machine of the present invention;
FIG. 11 is a cross-sectional view of the pulsatile pump of the quick-change prosthetic heart valve testing machine of the present invention;
FIG. 12 is a horizontal cross-sectional view of a quick-change prosthetic heart valve testing machine in accordance with a preferred embodiment of the present invention;
In the figure: ventricular analog mechanism 1, ventricular chamber 11, ventricular compliance chamber 12, exhaust valve I13, water filling port cover I14, check valve I15, check valve seat I16, regulating valve I17, heating block I18, water drain fitting III 19, observation window I110, observation window seat I111, arterial analog mechanism 2, arterial chamber 21, arterial compliance chamber 22, exhaust valve II 23, water filling port cover II 24, check valve II 25, check valve seat II 26, regulating valve II 27, heating block II 28, water drain fitting IV 29, observation window II 210, observation window seat II 211, return pipe 3, inner pipe 31, outer pipe 32, valve quick change mechanism 4, ventricular water storage chamber 41, arterial water storage chamber 42, quick change chamber 43, valve carrier 44, catch i 45, catch i 46, catch ii 47, catch ii 48, mounting cavity 49, exhaust connector i 410, exhaust connector ii 411, drain connector i 412, drain connector ii 413, pressure sensor i 414, pressure sensor ii 415, water storage cavity clamp block i 416, shutter i 417, water storage cavity clamp block ii 418, shutter ii 419, water passing hole 420, stopper 421, handle 422, pulsation pump 5, motor 51, connection cavity 52, diaphragm 53, power take-off cylinder 54, clip 55, motor bracket 56, housing 57, exhaust connector iii 58, drain connector v 59, slider 61, slide rail 62, base plate 63, pressure control valve 7, imaging mechanism 8, camera 81, camera bracket 82, light source 83.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
As shown in fig. 1-12, a quick-change type artificial heart valve detection testing machine comprises a ventricular simulation mechanism 1, an arterial simulation mechanism 2, a return pipe 3, a valve quick-change mechanism 4 and a pulsation pump 5, wherein the ventricular simulation mechanism 1 comprises a ventricular cavity 11; the arterial simulation mechanism 2 comprises an arterial cavity 21; the return pipe 3 is communicated with the inner cavity of the ventricular cavity 11 and the inner cavity of the arterial cavity 21; the valve quick-change mechanism 4 can be communicated with the inner cavity of the ventricular cavity 11 and the inner cavity of the arterial cavity 21, the valve quick-change mechanism 4 comprises a ventricular water storage cavity 41 arranged on the ventricular cavity 11, an arterial water storage cavity 42 arranged on the arterial cavity 21 and a quick-change cavity 43 connected between the ventricular water storage cavity 41 and the arterial water storage cavity 42, flashboards are respectively arranged at two sides of the quick-change cavity 43, and a valve carrier 44 is arranged in the quick-change cavity 43; a pulsatile pump 5 is connected to the ventricular chamber 11 for powering the test fluid in the test machine.
In the present embodiment, the ventricular analog mechanism 1 and the arterial analog mechanism 2 are arranged side by side in opposition, the return pipe 3 and the valve quick change mechanism 4 are located between the ventricular analog mechanism 1 and the arterial analog mechanism 2, and the pulsation pump 5 is located on the rear side of the ventricular analog mechanism 1 and the arterial analog mechanism 2.
Specifically, the inner cavity of the ventricular cavity 11, the inner cavity of the valve quick-change mechanism 4, the inner cavity of the arterial cavity 21 and the return pipe 3 form a complete test circulation path, namely test liquid in the inner cavity of the ventricular cavity 11 passes through the product in the valve quick-change mechanism 4, then passes through the inner cavity of the arterial cavity 21 and returns to the inner cavity of the ventricular cavity 11 from the return pipe 3; in addition, the circulating passage can be formed in the direction opposite to the direction so as to meet the test of different types of products.
Wherein the product is placed on a valve carrier 44 of the quick-change cavity 43.
As shown in fig. 2-4, in order to realize the detachable connection between the quick-change cavity 43 and the ventricular water storage cavities 41 and the arterial water storage cavities 42 at two ends thereof, the outer walls of the ventricular water storage cavities 41 and the arterial water storage cavities 42 are respectively provided with a lock catch, the outer wall of the quick-change cavity 43 is provided with a lock catch matched with the lock catch, and the lock catch can be locked with the corresponding lock catch.
Specifically, the inner hole of the ventricular water storage cavity 41, the inner hole of the quick-change cavity 43 and the inner hole of the arterial water storage cavity 42 are coaxially arranged so as to ensure the passing of test liquid.
The ventricular water storage cavity 41 is arranged on the ventricular cavity 11 through a connecting piece such as a bolt, and an inner hole of the ventricular water storage cavity 41 is communicated with an inner cavity of the ventricular cavity 11, namely, the inner hole of the ventricular water storage cavity 41 is opposite to a lower connecting hole of the ventricular cavity 11; the arterial water storage cavity 42 is mounted on the arterial cavity 21 through a connecting piece such as a bolt, and an inner hole of the arterial water storage cavity 42 is communicated with the inner cavity of the arterial cavity 21, namely, the inner hole of the arterial water storage cavity 42 is opposite to the lower connecting hole of the arterial cavity 21.
In this embodiment, the top and bottom of the ventricular water storage chamber 41 are respectively provided with a lock catch i 45, one end of the quick-change cavity 43 facing the ventricular water storage chamber 41 is provided with a lock catch i 46 matched with the lock catch i 45, meanwhile, the top and bottom of the arterial water storage chamber 42 are respectively provided with a lock catch ii 47, and one end of the quick-change cavity 43 facing the arterial water storage chamber 42 is provided with a lock catch ii 48 matched with the lock catch ii 47.
In the invention, the quick-change cavity 43 and the two water storage cavities are respectively matched by double-lock buckles, so that the stability of connection between the quick-change cavity 43 and the ventricular water storage cavity 41 and between the quick-change cavity 43 and the arterial water storage cavity 42 can be ensured, and leakage of test liquid in the test process can be avoided.
Wherein, the quick-change cavity 43 is provided with the installation cavity 49 towards the one end hole of arterial water storage cavity 42, and valve carrier 44 installs in the installation cavity 49.
The ventricular water storage cavity 41 and the arterial water storage cavity 42 are respectively provided with an exhaust port, and an exhaust joint is arranged on the exhaust port.
When the test liquid is injected into the test machine, the exhaust port of the chamber is provided with the exhaust connector i 410 in order to exhaust the air in the chamber 41, and the exhaust port of the chamber is provided with the exhaust connector ii 411 in order to exhaust the air in the arterial chamber 42.
The ventricular water storage cavity 41 and the arterial water storage cavity 42 are respectively provided with a water drain, and a water drain joint is arranged on the water drain.
After the test is completed, a drain joint I412 is arranged on a drain port of the ventricular water storage cavity 41 in order to drain test liquid in the water storage cavity; also, in order to drain the test liquid in the arterial reservoir chamber 42, a drain fitting ii 413 is attached to the drain port of the reservoir chamber.
Preferably, two exhaust connectors on the valve quick change mechanism 4 are mounted on top of the ventricular water storage chamber 41 and the arterial water storage chamber 42, respectively, and two drain connectors are mounted on bottom of the ventricular water storage chamber 41 and the arterial water storage chamber 42, respectively.
In order to be able to monitor the pressure changes on both sides of the product, i.e. on the test liquid inflow side and on the test liquid outflow side, pressure sensors are mounted on the ventricular reservoir 41 and on the arterial reservoir 42, respectively.
In this embodiment, the pressure sensor i 414 located on the ventricular water storage chamber 41 and the pressure sensor ii 415 located on the arterial water storage chamber 42 are respectively installed at the rear side of the corresponding water storage chamber, and the through hole where the detection end is located is communicated with the inner hole of the corresponding water storage chamber.
The setting of flashboard is in order to realize switch-on and switch-off between quick change cavity 43 and the water storage chamber on both sides thereof, needs to be in switch-on state in the test process promptly, needs to be in switch-off state when changing the product, and in order to realize the installation of flashboard, the water storage chamber clamp splice is all installed to the one end of ventricular water storage chamber 41 towards quick change cavity 43 and the one end of arterial water storage chamber 42 towards quick change cavity 43, and the flashboard is installed between water storage chamber clamp splice and corresponding ventricular water storage chamber 41 or arterial water storage chamber 42.
Specifically, the water storage cavity clamping block I416 is connected with the ventricular water storage cavity 41 through a screw, and the flashboard I417 is arranged between the water storage cavity clamping block I416 and the ventricular water storage cavity 41; the water storage cavity clamping block II 418 is connected with the arterial water storage cavity 42 through a screw, and the flashboard II 419 is arranged between the water storage cavity clamping block II 418 and the arterial water storage cavity 42.
As shown in fig. 5, in order to ensure the flow of the test liquid during the test, the shutter is provided with a water passing hole 420, and when the water passing hole 420 is staggered with the inner hole of the quick-change cavity 43, the quick-change cavity 43 is separated from the ventricular water storage cavity 41 or the arterial water storage cavity 42 on the side of the shutter.
In this embodiment, the water hole 420 is eccentrically disposed, that is, the water hole 420 is not located at the center of the gate, so that the water hole 420 is opposite to the inner hole of the quick-change cavity 43 during testing, so as to ensure the flowing of the test liquid; when the product is replaced, the water passing holes 420 are staggered with the inner holes of the quick-change cavity 43 so as to cut off the flowing of the test liquid.
Preferably, sealing rings are arranged between each flashboard and the water storage cavity clamping blocks and the water storage cavities on two sides of each flashboard so as to ensure the sealing of the flashboard and avoid the leakage of test liquid.
In order to limit the flashboard, the flashboard is prevented from being pulled out from between the water storage cavity clamping block and the corresponding water storage cavity, and the two ends of the flashboard are respectively provided with a stop block 421.
The thickness of the stopper 421 is greater than the thickness of the shutter body.
In the present embodiment, the shutter is disposed in the front-rear direction, the water passing hole 420 is located at the front end of the shutter, and one end of the shutter is provided with a handle 422 for convenience of moving the shutter forward or backward.
Preferably, in order to facilitate the operation of the shutter, a handle 422 is provided at the front end of the shutter.
As shown in fig. 6-9, to simulate the physiological compliance of the human body, so that the test fluid forms a self-circulation within the testing machine, the top of the ventricular cavity 11 is fitted with a ventricular compliance cavity 12 communicating with its lumen,
An arterial compliance lumen 22 is mounted on top of the arterial lumen 21 in communication with its lumen.
The two compliance cavities can realize the self circulation of test liquid in the tester, thereby facilitating the disinfection operation in the tester.
Specifically, when the interior of the testing machine is disinfected, a valve is not required to be installed, disinfectant is injected into the testing machine, the motor 51 is started, and the motor 51 can push the disinfectant to flow in the internal channel of the testing machine, so that self-circulation disinfection is formed.
The top of the ventricular compliance cavity 12 and the arterial compliance cavity 22 are each provided with an exhaust port and a water filling port.
An exhaust valve is arranged on the exhaust port, and a water filling port sealing cover is arranged on the water filling port.
An exhaust valve I13 is arranged on the top exhaust port of the ventricular compliance cavity 12, and an exhaust valve II 23 is arranged on the top exhaust port of the arterial compliance cavity 22.
Before a test, test fluid may be injected into the test machine through the water injection ports at the top of the ventricular compliance chamber 12 and at the top of the arterial compliance chamber 22, at which time the gas in the test machine may be vented through the exhaust valves at the top of the two compliance chambers.
The exhaust valve not only can exhaust, but also can be connected with an air source through the exhaust valve so as to facilitate air supplementing operation and simulate different compliance requirements.
Both the fill port closure I14 on the top fill port of the ventricular compliance cavity 12 and the fill port closure II 24 on the top fill port of the arterial compliance cavity 22 can seal both fill ports when fill is not required.
Preferably, the ventricular compliance cavity 12 and the arterial compliance cavity 22 are made of transparent materials to facilitate viewing of changes in the fluid level therein.
To enable the formation of the circulation path, check valves are installed in the inner cavities of the ventricular chamber 11 and the arterial chamber 21, respectively.
Specifically, two ends of the return pipe 3 are respectively installed at the upper connecting holes of the ventricular cavity 11 and the arterial cavity 21, the one-way valve I15 in the ventricular cavity 11 is installed between the upper connecting hole and the lower connecting hole of the inner cavity of the ventricular cavity, and the one-way valve II 25 in the arterial cavity 21 is installed between the upper connecting hole and the lower connecting hole of the inner cavity of the arterial cavity.
In order to facilitate the disassembly and assembly of the check valve, the check valve is mounted on a corresponding check valve seat which is installed in a corresponding inner cavity from the side surfaces of the ventricular cavity 11 and the arterial cavity 21.
Specifically, the opposite sides of the ventricular cavity 11 and the arterial cavity 21 are provided with one-way valve mounting openings communicated with the corresponding cavities, the one-way valve seat I16 on the ventricular cavity 11 is mounted in the one-way valve mounting opening on the side surface of the ventricular cavity 11, the one-way valve seat II 26 on the arterial cavity 21 is mounted in the one-way valve mounting opening on the side surface of the arterial cavity 21, and each one-way valve mounting seat is fixed in the corresponding one-way valve mounting opening through bolts.
Compared with the traditional built-in one-way valve, the test machine is more convenient to assemble, disassemble and replace due to the arrangement of the external one-way valve and the one-way valve seat, so that the test machine can be suitable for testing different types of products.
The check valve can be installed in both directions in order to adjust the direction of the test liquid circulation according to the type of the product.
When the direction of the check valve is changed, the corresponding check valve seat is taken down, the direction of the check valve and the direction of the check valve are overturned, and then the check valve is installed in the corresponding check valve installation opening again.
At the time of replacement of the product, the quick-change chamber 43 needs to be detached from between the ventricular water storage chamber 41 and the arterial water storage chamber 42, and in order to facilitate this operation, the interval between the ventricular analog mechanism 1 and the arterial analog mechanism 2 needs to be adjusted, and therefore, the arterial chamber 21 can be moved relative to the ventricular chamber 11.
To achieve movement of the arterial lumen 21, a slider 61 is mounted to the bottom of the arterial lumen 21, the slider 61 being a sliding fit on a slide rail 62.
Specifically, the ventricular analog device 1 and the arterial analog device 2 are mounted on a base plate 63, and the slide rail 62 is fixed on the base plate 63, so that the arterial cavity 21 can move toward the ventricular cavity 11 or away from the ventricular cavity 11 by the cooperation of the slide rail 62 and the slide block 61.
When the product is replaced and the quick-change cavity 43 is disassembled, the return pipe 3 is of a two-section detachable telescopic sleeve structure in order to adapt to the change of the interval between the ventricular analog mechanism 1 and the arterial analog mechanism 2.
Specifically, the return tube 3 comprises an inner tube 31 connected to the ventricular chamber 11 and an outer tube 32 connected to the arterial chamber 21, the free end of the inner tube 31 extending into the free end of the outer tube 32 and being movable relative to each other.
Specifically, a sealing ring is installed on the outer wall of the inner tube 31 to ensure the tightness of the fit between the outer tube 32 and the inner tube 31.
In order to be able to achieve pressure regulation of the circulation path by means of the return flow of the test liquid in the return pipe 3, a pressure control valve 7 is installed between the inner pipe 31 and the ventricular chamber 11.
Specifically, the pressure control valve 7 is installed on the ventricular cavity 11 and is communicated with the upper connecting hole of the ventricular cavity 11, and the inner tube 31 is fixed at the other end of the pressure control valve 7; the outer tube 32 is directly fixed to the arterial lumen 21 by a connector such as a screw and communicates with the upper connection hole of the arterial lumen 21.
In order to be able to regulate in real time the flow rate of the test liquid in the chamber 11 and in the arterial chamber 21, the lateral surfaces of the chamber 11 and of the arterial chamber 21 are respectively provided with regulating valves which extend into the respective chambers.
The regulating valve I17 on the ventricular chamber 11 and the regulating valve II 27 on the arterial chamber 21 are both mounted on the front side of the corresponding chambers.
In order to heat the test liquid in the tester to meet the test requirements, the bottom of the inner cavity of the ventricular chamber 11 and the bottom of the inner cavity of the arterial chamber 21 are respectively provided with heating blocks.
Specifically, the heating block I18 in the ventricular chamber 11 is located at the bottom of its lumen, and the heating block II 28 in the arterial chamber 21 is located at the bottom of its lumen.
After the test is finished, in order to conveniently discharge the test liquid in the ventricular cavity 11 and the arterial cavity 21, water discharge ports are arranged on the ventricular cavity 11 and the arterial cavity 21, and a water discharge joint is arranged on the water discharge ports.
A drain joint III 19 is arranged on the drain port of the ventricular cavity 11, and a drain joint IV 29 is arranged on the drain port of the arterial cavity 21.
In order to be convenient for observing the condition of the product in the test process, the ventricular cavity 11 and the arterial cavity 21 are respectively provided with an observation window, and an imaging mechanism 8 is correspondingly arranged outside the observation windows.
The two observation windows are respectively arranged on the opposite sides of the ventricular cavity 11 and the arterial cavity 21, the observation window I110 on the ventricular cavity 11 is opposite to the lower connecting hole, and the observation window II 210 on the arterial cavity 21 is opposite to the lower connecting hole, so that the test conditions of the product can be observed from two sides in the test process.
Wherein the imaging mechanism 8 comprises a camera 81 opposite the viewing window.
Specifically, the imaging mechanism 8 further includes a camera mount 82 mounted on the observation window mount, and the camera 81 is fixed to the camera mount 82.
The observation window seat I111 is fixed on the ventricular cavity 11, and the observation window I110 is positioned on the observation window seat I111; the observation window seat II 211 is fixed on the arterial cavity 21, and the observation window II 210 is positioned on the observation window seat II 211.
In order to enable the camera 81 to clearly register changes in the product during the test run, a light source 83 is mounted at the periphery of the viewing window.
As shown in fig. 10-12, to provide pulsating push water to the test liquid, the pulsating pump 5 comprises a motor 51 and a connecting cavity 52 arranged at the output end of the motor 51, the connecting cavity 52 is connected with the ventricular cavity 11, and a diaphragm 53 is arranged between the inner cavity of the connecting cavity 52 and the inner cavity of the ventricular cavity 11.
Specifically, the power output cylinder 54 at the output end of the motor 51 is connected with the connecting cavity 52 through the clamp 55, the connecting cavity 52 is connected to the rear side of the ventricular cavity 11 by using a connecting piece such as a bolt, the connecting cavity 52 is opposite to the rear connecting hole of the inner cavity of the ventricular cavity 11, the diaphragm 53 is arranged between the rear connecting hole and the connecting cavity 52, the connecting cavity 52 is filled with driving liquid, the motor 51 transmits power to the driving liquid in the connecting cavity 52, and then the power is transmitted to test liquid in the ventricular cavity 11 through the diaphragm 53.
Wherein, for the convenience of connection with the ventricular cavity 11, the connection cavity 52 has an L-shaped structure.
To facilitate the mounting and securing of the motor 51, the motor 51 is mounted in an outer housing 57 by a motor bracket 56.
Specifically, two motor brackets 56 are provided side by side to achieve stable support of the motor 51.
The connection cavity 52 is provided with an exhaust port and a water outlet, the exhaust port is provided with an exhaust joint, and the water outlet is provided with a water outlet joint.
Specifically, the exhaust connector iii 58 of the drain port row can conveniently exhaust the gas in the connecting cavity 52 when the driving liquid is injected into the connecting cavity 52 before the test; the drain connector v 59 on the drain port can facilitate the drainage of the driving liquid in the connection chamber 52 after the end of the test.
In addition, in the test process, each drainage joint can be used for plugging the water outlet or the water outlet where the drainage joint is positioned, so that leakage of test liquid or driving liquid is avoided. Similarly, after the test liquid or the driving liquid is injected, the corresponding exhaust joint or the exhaust valve is closed, so that the influence on the pressure change in the tester is avoided, and the normal running of the test is further influenced.
Before the product test is carried out, the two flashboard are pulled forward to enable the water passing holes 420 and the inner holes of the quick-change cavity 43 to be staggered, at the moment, the ventricular water storage cavity 41, the arterial water storage cavity 42 and the quick-change cavity 43 are separated, then the water filling port sealing cover is opened, test liquid is filled into the test machine, and after the test liquid is almost filled, the two water filling port sealing covers are closed. Then, the valve carrier 44 filled with the product is arranged in the quick-change cavity 43, the quick-change cavity 43 is assembled between the ventricular water storage cavity 41 and the arterial water storage cavity 42, corresponding lock catches and lock catches are locked, the flashboard is pushed backwards, the water passing hole 420 is opposite to the inner hole of the quick-change cavity 43, so that the ventricular water storage cavity 41, the quick-change cavity 43 and the arterial water storage cavity 42 are communicated, and test liquid is filled into the quick-change cavity 43 at the moment. The motor 51 is started, the pulsating pump 5 performs a water pushing operation, and the test liquid drives the product to open and close, so that the test is started. In this process, the two pressure sensors and the camera 81 record pressure data and image data in real time and upload the pressure data to the background computer.
After the test of one product is completed, the flashboard is pulled forward again, the water storage cavities at two sides of the quick-change cavity 43 are closed, the quick-change cavity 43 is taken down by releasing the lock catch, the valve carrier 44 is taken out, the test product can be replaced, and then the test process is repeated.
The valve quick-change mechanism 4 with three sections of quick-assembly type is adopted, so that the loss of test liquid can be reduced when a test product is replaced, the operation is simple and convenient, the test time is effectively shortened, and the test efficiency is improved.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (10)
1. A quick-change artificial heart valve detection testing machine is characterized by comprising
A ventricular simulation mechanism (1) comprising a ventricular cavity (11);
An arterial simulation mechanism (2) comprising an arterial lumen (21);
a return tube (3) communicating the lumen of the ventricular chamber (11) with the lumen of the arterial chamber (21);
The valve quick-change mechanism (4) can be communicated with the inner cavity of the ventricular cavity (11) and the inner cavity of the arterial cavity (21), the valve quick-change mechanism (4) comprises a ventricular water storage cavity (41) arranged on the ventricular cavity (11), an arterial water storage cavity (42) arranged on the arterial cavity (21) and a quick-change cavity (43) connected between the ventricular water storage cavity (41) and the arterial water storage cavity (42), flashboards are respectively arranged at two sides of the quick-change cavity (43), and a valve carrier (44) is arranged in the quick-change cavity (43);
A pulsating pump (5) connected to the ventricular chamber (11) for powering the test liquid in the test machine.
2. The quick-change type artificial heart valve detection testing machine according to claim 1, wherein the outer walls of the ventricular water storage cavity (41) and the arterial water storage cavity (42) are respectively provided with a lock catch, the outer wall of the quick-change cavity (43) is provided with a lock catch matched with the lock catch, and the lock catch can be locked with the corresponding lock catch;
The ventricular water storage cavity (41) and the arterial water storage cavity (42) are respectively provided with an exhaust port, and an exhaust joint is arranged on the exhaust port;
The ventricular water storage cavity (41) and the arterial water storage cavity (42) are respectively provided with a water drain port, and a water drain joint is arranged on the water drain port;
pressure sensors are respectively arranged on the ventricular water storage cavity (41) and the arterial water storage cavity (42).
3. The quick-change type artificial heart valve detection testing machine according to claim 1, wherein a water storage cavity clamping block is mounted at one end of the ventricular water storage cavity (41) facing the quick-change cavity (43) and one end of the arterial water storage cavity (42) facing the quick-change cavity (43), and the flashboard is mounted between the water storage cavity clamping block and the corresponding ventricular water storage cavity (41) or the arterial water storage cavity (42);
The flashboard is provided with a water passing hole (420), and when the water passing hole (420) is staggered with an inner hole of the quick-change cavity (43), the quick-change cavity (43) is separated from a ventricular water storage cavity (41) or an arterial water storage cavity (42) at the side of the flashboard;
Two ends of the flashboard are respectively provided with a stop block (421);
One end of the flashboard is provided with a handle (422).
4. The quick-change prosthetic heart valve testing machine of claim 1, wherein a ventricular compliance cavity (12) in communication with an interior cavity thereof is mounted on top of the ventricular cavity (11);
an arterial compliance cavity (22) communicated with the inner cavity of the arterial cavity (21) is arranged at the top of the arterial cavity;
The tops of the ventricular compliance cavity (12) and the arterial compliance cavity (22) are respectively provided with an air outlet and a water filling port;
an exhaust valve is arranged on the exhaust port, and a water filling port sealing cover is arranged on the water filling port.
5. The quick-change type artificial heart valve detection testing machine according to claim 1, wherein the inner cavities of the ventricular cavity (11) and the arterial cavity (21) are respectively provided with one-way valves;
The check valve is arranged on a corresponding check valve seat, and the check valve seat is arranged in a corresponding inner cavity from the side surfaces of the ventricular cavity (11) and the arterial cavity (21);
The one-way valve can be installed in two directions.
6. The quick-change type artificial heart valve detection testing machine according to claim 1, wherein the return pipe (3) is of a two-section detachable telescopic pipe structure;
The return pipe (3) comprises an inner pipe (31) connected with the ventricular cavity (11) and an outer pipe (32) connected with the arterial cavity (21), and the free end of the inner pipe (31) extends into the free end of the outer pipe (32) and can move relatively;
a pressure control valve (7) is arranged between the inner tube (31) and the ventricular cavity (11).
7. The quick-change prosthetic heart valve testing machine of claim 1, characterized in that the arterial cavity (21) is movable relative to the ventricular cavity (11);
The bottom of the artery cavity (21) is provided with a sliding block (61), and the sliding block (61) is in sliding fit on a sliding rail (62).
8. The quick-change heart valve prosthesis detection testing machine according to claim 1, characterized in that the lateral surface of the ventricular cavity (11) and the lateral surface of the arterial cavity (21) are respectively provided with a regulating valve which extends into the corresponding inner cavity;
the bottom of the inner cavity of the ventricular cavity (11) and the bottom of the inner cavity of the arterial cavity (21) are respectively provided with a heating block;
drain ports are respectively arranged on the ventricular cavity (11) and the arterial cavity (21),
And a drainage joint is arranged at the water outlet.
9. The quick-change type artificial heart valve detection testing machine according to claim 1, wherein the ventricular cavity (11) and the arterial cavity (21) are respectively provided with an observation window, and an imaging mechanism is correspondingly arranged outside the observation windows;
The imaging mechanism comprises a camera (81) opposite the viewing window;
A light source (83) is mounted on the periphery of the observation window.
10. The quick-change type artificial heart valve detection testing machine according to claim 1, wherein the pulsation pump (5) comprises a motor (51) and a connecting cavity (52) assembled at the output end of the motor (51), the connecting cavity (52) is connected with the ventricular cavity (11), and a diaphragm (53) is arranged between the inner cavity of the connecting cavity (52) and the inner cavity of the ventricular cavity (11);
the motor (51) is arranged in an outer housing (57) through a motor bracket (56);
The exhaust port and the water outlet are respectively arranged on the connecting cavity (52), an exhaust joint is arranged on the exhaust port, and a water outlet joint is arranged on the water outlet.
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| CN101147706A (en) * | 2006-09-22 | 2008-03-26 | 同济大学 | Apparatus for in vitro performance testing of interventional valves and other prosthetic valves |
| CN111358596A (en) * | 2020-03-09 | 2020-07-03 | 科凯(南通)生命科学有限公司 | A multi-mode parallel valve fatigue life testing device |
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| US5370685A (en) * | 1991-07-16 | 1994-12-06 | Stanford Surgical Technologies, Inc. | Endovascular aortic valve replacement |
| US8800348B2 (en) * | 2010-06-14 | 2014-08-12 | Medical Implant Testing Lab, Inc. | Portable multifunction cardiac simulator and heart valve tester |
| GB2617019B (en) * | 2021-10-23 | 2024-01-31 | Zhou Wenbo | Simulator, artificial heart valve, method of making artificial heart valve, arm, and predictive method |
| CN217525511U (en) * | 2022-02-15 | 2022-10-04 | 上海盈阁智能科技有限公司 | In-vitro heart valve testing system comprising water adding buffer part |
| CN218444453U (en) * | 2022-10-27 | 2023-02-03 | 圣塔菲医疗科技(常州)有限公司 | Circulation mechanism of fatigue testing machine for cardiovascular implant |
| CN218629033U (en) * | 2022-12-05 | 2023-03-14 | 圣塔菲医疗科技(常州)有限公司 | Cardiovascular implant fatigue test system |
| CN116929970A (en) * | 2023-07-28 | 2023-10-24 | 上海心纪元医疗科技有限公司 | Valve leaflet fatigue test method and test tool thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101147706A (en) * | 2006-09-22 | 2008-03-26 | 同济大学 | Apparatus for in vitro performance testing of interventional valves and other prosthetic valves |
| CN111358596A (en) * | 2020-03-09 | 2020-07-03 | 科凯(南通)生命科学有限公司 | A multi-mode parallel valve fatigue life testing device |
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