WO2022199154A1 - Valve durability testing device - Google Patents
Valve durability testing device Download PDFInfo
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- WO2022199154A1 WO2022199154A1 PCT/CN2021/139374 CN2021139374W WO2022199154A1 WO 2022199154 A1 WO2022199154 A1 WO 2022199154A1 CN 2021139374 W CN2021139374 W CN 2021139374W WO 2022199154 A1 WO2022199154 A1 WO 2022199154A1
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- Prior art keywords
- valve
- inner cavity
- axis
- testing
- driving mechanism
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- 238000012360 testing method Methods 0.000 title claims abstract description 63
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 230000007246 mechanism Effects 0.000 claims description 74
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 10
- 238000002955 isolation Methods 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 6
- 230000033001 locomotion Effects 0.000 abstract description 15
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- 230000017531 blood circulation Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000001356 surgical procedure Methods 0.000 description 4
- 210000001765 aortic valve Anatomy 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 210000003709 heart valve Anatomy 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
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- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000018578 heart valve disease Diseases 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 206010067171 Regurgitation Diseases 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
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- 230000032683 aging Effects 0.000 description 1
- 239000002473 artificial blood Substances 0.000 description 1
- 230000004397 blinking Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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- 230000032798 delamination Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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Images
Classifications
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- 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
- A61F2/2472—Devices for testing
-
- 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
Definitions
- the invention relates to the technical field of testing devices for medical instruments, in particular to a testing device for valve durability.
- Transcatheter heart valves require durability testing before they can be put into clinical use. Taking the transcatheter aortic valve as an example, the durability test requires that the transcatheter aortic valve can survive at least 200 million cycles without failure when the pressure conditions are met. Common failures include perforation, tearing, leaflet delamination, valve wear, regurgitation, rupture, excessive deformation, failure of individual components, and other mechanical damage and wear. In order to understand the durability failure of the transcatheter aortic valve and analyze the cause of failure, it is necessary to observe the movement of the valve many times during the test process, but the valve usually circulates at a higher frequency during the durability test, and the naked eye is very Difficult to observe carefully.
- the purpose of the present invention is to provide a valve durability test device to assist the observer to observe the valve movement.
- the present invention provides a test device for valve durability, comprising:
- a casing which has an inner cavity, the inner cavity is used for accommodating a liquid medium, and the casing is provided with a first observation window, and the first observation window is used to observe the valve located in the inner cavity;
- a fixation module disposed in the lumen and used to mount the valve
- a strobe light is disposed in the inner cavity and includes a plurality of flash light sources, and the plurality of flash light sources are arranged around the axis of the fixed module.
- the axis of the first observation window and the axis of the fixing module are parallel to each other.
- the distance from any one of the flash sources to the first observation window is smaller than the distance from any point on the valve to the first observation window.
- the distance from any one of the flash sources to the axis of the valve is greater than or equal to the distance from any point on the valve to the axis of the valve.
- a plurality of the flash light sources are arranged symmetrically around the axis of the fixed module.
- the testing device further includes an isolation cover, which is arranged on the strobe light and isolates the flash source from the liquid medium.
- the testing device further includes an adjustment mechanism, which is electrically connected to the strobe light and used to adjust the flickering frequency of the strobe light.
- the testing device further includes a drive mechanism and a control mechanism; the drive mechanism is used to drive the valve to switch between an open state and a closed state; the control mechanism, the drive mechanism and the strobe The lamp is connected in communication for adjusting the blinking frequency of the strobe lamp according to the operating frequency of the driving mechanism.
- the driving mechanism includes a connected solution pump and a power source; the solution pump is arranged in the inner cavity and is used to be immersed in the liquid medium; the power source is used to drive the solution the pump moves in a direction toward or away from the valve; the power source is in communication with the control mechanism;
- the test device is configured such that when the power source drives the solution pump in a first direction, the liquid medium creates a pressure differential between the inflow and outflow ends of the valve and causes the valve to move in a first direction. open under the action of the pressure difference; when the power source drives the solution pump to move in a second direction, the pressure difference is released and the valve is closed; the second direction is opposite to the first direction .
- the inner cavity is further used to accommodate a gas medium, and the gas medium is located on a side of the liquid medium away from the first observation window.
- the fixing module is movably arranged in the inner cavity;
- the driving mechanism is at least partially arranged in the inner cavity and connected with the fixing module, and the driving mechanism is used to drive the
- the fixed module drives the valve to reciprocate;
- the testing device is configured such that the liquid medium creates a pressure differential between the inflow and outflow ends of the valve when the drive mechanism urges the valve to move in a direction from the outflow end of the valve toward the inflow end,
- the valve is opened under the action of the pressure difference; when the driving mechanism drives the valve to move in the direction from the inflow end of the valve to the outflow end, the pressure difference is released and the valve is closed.
- the driving mechanism includes a power source and a transmission part that are connected to each other, the power source is disposed outside the casing and is connected in communication with the control mechanism; a part of the transmission part is located in the casing The outside is connected with the power source, and the other part extends into the inner cavity and is connected with the fixed module;
- the driving mechanism further includes a first buffer member disposed between the power source and the casing; and/or the driving mechanism includes a second buffer member located outside the casing and disposed at the between the housing and the transmission part.
- the testing device further includes a temperature maintaining mechanism for maintaining the liquid medium at a predetermined temperature; and/or the testing device further includes a pressure monitoring mechanism, provided on the housing, for monitoring the pressure at the axial ends of the valve.
- valve durability testing device of the present invention has the following advantages:
- the aforementioned valve durability testing device includes a casing, a mounting bracket and a strobe light; wherein, the casing has an inner cavity, the inner cavity is used for accommodating a liquid medium, and the casing is provided with an inner cavity. There is a first observation window, and the first observation window is used for observing the valve located in the inner cavity; the fixing module is arranged in the inner cavity and is used for installing the valve.
- the strobe light is disposed in the lumen and includes a plurality of flash light sources arranged around the axis of the valve.
- the strobe light is installed in the inner cavity, and the The multiple light sources of the strobe light are arranged around the axis of the valve, so that the light of the strobe light can be irradiated on the valve in a surrounding manner, which is convenient for observation, and also avoids the light of the strobe light from being reflected or reflected, which is unfavorable for observation.
- the distance from any one of the flash sources to the first observation window is smaller than any one on the valve.
- the distance from one point to the first observation window to avoid light shadows and affect observation.
- the distance from any one of the flash sources to the axis of the first observation window is greater than the distance from any point on the valve to the axis of the first observation window. distance to avoid the strobe light blocking the observation channel.
- the testing device further includes a drive mechanism and a control mechanism, the drive mechanism is used to drive the valve to switch between an open state and a closed state; the control mechanism, the drive mechanism and the strobe light
- the communication connection is used to adjust the flickering frequency of the strobe light according to the operating frequency of the driving mechanism, so that the flickering frequency of the strobe light can be quickly adapted to the motion frequency of the valve, thereby improving the test efficiency.
- FIG. 1 is a schematic structural diagram of a valve durability testing device provided according to an embodiment of the present invention.
- FIG. 2 is a schematic diagram of the arrangement of the strobe lights of the valve durability testing device according to an embodiment of the present invention
- FIG. 3 is a schematic diagram of a connection relationship between a strobe light, a drive mechanism, an adjustment mechanism and a control mechanism of a valve durability testing device according to an embodiment of the present invention
- FIG. 4 is a schematic structural diagram of a valve durability testing device according to another embodiment of the present invention.
- 500-drive mechanism 501-solution pump, 502-power source, 503-transmission part, 503a-connecting block, 503b-rod, 504-first buffer, 505-second buffer;
- 901 - heating rod, 902 - pressure monitoring mechanism 901 - heating rod, 902 - pressure monitoring mechanism.
- each embodiment of the following description has one or more technical features, but this does not mean that the person using the present invention must implement all the technical features in any embodiment at the same time, or can only implement different embodiments separately.
- One or all of the technical features of the .
- those skilled in the art can selectively implement some or all of the technical features in any embodiment according to the disclosure of the present invention and depending on design specifications or implementation requirements, or The combination of some or all of the technical features in the multiple embodiments is selectively implemented, thereby increasing the flexibility of the implementation of the present invention.
- the singular forms “a,” “an,” and “the” include plural referents, and the plural forms “a plurality” include two or more referents unless the content clearly dictates otherwise.
- the term “or” is generally employed in its sense including “and/or” unless the content clearly dictates otherwise, and the terms “installed”, “connected”, “connected” shall be To be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between two elements or the interaction relationship between the two elements.
- valve refers to an artificial valve, that is, an artificial organ that can be implanted in the human body to replace the original valve, can ensure one-way blood flow, and has the function of the original valve, including artificial heart valves and other artificial blood vessels.
- valve refers to an artificial valve, that is, an artificial organ that can be implanted in the human body to replace the original valve, can ensure one-way blood flow, and has the function of the original valve, including artificial heart valves and other artificial blood vessels.
- FIG. 1 shows a schematic structural diagram of a valve durability test device provided by an embodiment of the present invention
- FIG. 2 shows a schematic diagram of the arrangement of strobe lights in the test device.
- the testing device includes a casing 100 , a fixing module 200 and a strobe light.
- the housing 100 has an inner cavity, and the inner cavity is used for accommodating a liquid medium 401, such as water, physiological saline, etc., which is used to simulate the blood environment in the human body.
- the casing 100 is provided with a first observation window 101 , and the first observation window 101 is used to observe the valve 10 located in the lumen.
- the fixing module 200 is arranged in the lumen and is used to install the valve 10 .
- the strobe light is arranged in the inner cavity, and includes a plurality of flash light sources 301 , and the plurality of flash light sources 301 are arranged around the axis of the fixed module 200 .
- the first observation window 101 may be composed of a window opened on one end of the housing 100 and a transparent cover plate covering the window.
- the outflow end of the valve 10 can be made closer to the first observation window 101, or the observer wishes to observe the valve 10 from the outflow end of the valve 10.
- the inflow end of the valve 10 can be made closer to the first observation window 101 .
- strobe lights can also be provided at the outflow and/or inflow ends of the valve 10 .
- the axis of the valve 10 refers to the direction parallel to the blood flow direction after the valve 10 is implanted into the heart, and in the direction perpendicular to the axis of the valve 10, the cross-section of the valve 10 is annular, For example, regular shapes such as circles and ovals, or irregular shapes such as D-shapes, etc.
- the first observation window 101 may be a regular shape such as a circle or an ellipse, and preferably, the area of the first observation window 101 is larger than the cross-sectional area of the valve 10 .
- the outflow end of the valve 10 refers to the end where blood flows out of the valve 10 after the valve is implanted into the heart
- the inflow end of the valve 10 refers to the end where blood flows into the valve 10 .
- the opening direction of the first observation window 101 is not limited, and can be selected to be parallel to, overlapping or forming a certain angle with the axis of the fixing module 200.
- the axis of the first observation window 101 and the axis of the fixing module 200 are parallel to each other, and more preferably they are coincident.
- the axis of the valve 10 installed on the fixing module 200 is parallel or overlapping with the axis of the fixing module 200, and both are parallel to the flow direction of the solution medium; of course, the present invention does not limit the setting of the fixing module 200 and the valve 10
- the method can be set by those skilled in the art according to the requirements, which all belong to the inventive concept of the present invention.
- the axis of the fixing module 200 overlaps with the axis of the valve 10, so that after the valve 10 is installed, the axis of the valve 10 coincides with the axis of the first observation window 101, which is convenient The observer observes the valve 10 along the axial direction of the valve 10 .
- the flickering frequency f 1 of the strobe light is adjusted to match the movement frequency f 2 of the valve 10 to use
- the valve 10 is observed for the phenomenon of persistence of vision. It should be known that the valve 10 is cyclically switched between the open state and the closed state during the durability test, and the movement frequency f2 of the valve 10 refers to the frequency of the valve 10 switching between the two states.
- the adaptation of f 1 and f 2 described herein means that f 1 and f 2 satisfy the following relationship: 0.5f 2 ⁇ f 1 ⁇ f 2 .
- the valve 10 moves at the frequency of (f 2 -f 1 ) ⁇ f 2 /f 1 in the eyes of the human eye.
- the valve 10 can be The valve 10 moves at a relatively high frequency and can be recognized by the human eye, which facilitates observation of the movement of the valve 10 .
- the valve durability test is an accelerated test, so the motion frequency f2 of the valve 10 is usually greater than 300 times/min.
- the strobe light By arranging the strobe light in the inner cavity of the housing 100, on the one hand, the obstruction of the observation path caused by the hand-held strobe device itself in the traditional external hand-held strobe device is avoided, and on the other hand , compared with arranging the strobe light outside the casing 100 , no reflection or reflection will be generated at the first observation window 101 , which is more convenient for observation. Especially when the multiple flash sources 301 of the strobe light are arranged around the axis of the fixing module 200, the dead angle of lighting can be reduced.
- the valve 10 can be evenly irradiated from the circumferential direction of the valve 10, which is more convenient for the observer to observe carefully, further reduces the dead angle of lighting, reduces the shadow around the valve, and effectively improves the observation and recording quality of the valve motion.
- the flash light source 301 is preferably an LED light source, which is smaller in size and more suitable for being arranged in the inner cavity, with low power consumption, high luminous efficiency, and long service life, and the LED light source has low heat generation, which can reduce the impact on the valve 10. influences.
- the frequency The distance from any one of the flash sources 301 of the flash lamp to the first observation window 101 is smaller than the distance from any point on the valve 10 to the first observation window 101, that is, taking the orientation shown in FIG. 1 as an example, all The flash sources 301 are all located above the valve 10 to avoid light shadows and affect observation.
- the distance from any one of the flash sources 301 to the axis of the valve 10 is greater than the distance from any point on the valve 10 to the axis of the valve 10, so The setting prevents the flash source 301 from blocking the viewing channel.
- the above arrangement can be achieved when a plurality of the flash light sources 301 are arranged on the inner top wall of the housing 100 .
- the angle between the flash source 301 or the strobe light as a whole and the axis of the fixing module 200 can be set to be adjustable.
- the valve 10 needs to be cyclically switched between the open and closed states during the testing process, which can be achieved by the driving mechanism 500 .
- the driving mechanism 500 includes a solution pump 501 and a power source 502 .
- the solution pump 501 is arranged in the inner cavity and is used to be immersed in the liquid medium 401, a part of the power source 502 can be arranged outside the housing 100, and the other part can extend into the inner cavity and connected with the solution pump 501 to drive the solution pump 501 to move in a direction close to or away from the valve, so that the liquid medium 401 generates a pressure difference between the inflow end and the outflow end of the valve, And under the action of the pressure difference, the valve 10 is opened or closed.
- the driving mechanism 500 can be disposed on the side of the valve 10 away from the first observation window 101 to prevent the driving mechanism 500 from blocking the observation channel.
- the driving mechanism 500 is disposed close to the inflow end of the valve 10 .
- the solution pump 501 drives the liquid medium 401 to enter the valve interior 10 from the inflow end of the valve 10 , so that the valve 10
- the pressure at the inflow end is greater than the pressure at the outflow end to cause the valve 10 to open.
- the power source 502 drives the solution pump 501 to move in a second direction opposite to the first direction
- the pressure difference is released and the valve 10 is closed.
- the first direction is the direction in which the inflow end of the valve 10 faces the outflow end
- the second direction is the direction in which the outflow end of the valve 10 faces the inflow end, that is, when the solution pump 501
- the solution pump 501 is close to the valve 10
- the solution pump 501 is moving in the second direction
- the solution pump 501 is away from the valve 10 .
- the longitudinal section of the inner cavity may be substantially U-shaped, wherein the first observation window 101 is provided at one end of the U-shaped structure , the other part of the power source 502 of the driving mechanism 500 can extend into the inner cavity from the other end of the U-shaped structure.
- the inner cavity is also used for accommodating a gas medium 402, such as compressed air, which is located on the side of the liquid medium 401 away from the first observation window 101, which is helpful for the solution
- the fixing module 200 is movably arranged in the inner cavity.
- the driving mechanism 500 is at least partially disposed in the inner cavity and is connected with the fixing module 200 to drive the fixing module 200 to reciprocate and drive the valve 10 to move synchronously, thereby causing the valve 10 opening and closing movements.
- the driving mechanism 500 drives the fixing module 200 to drive the valve 10 to move in the direction from the outflow end of the valve to the inflow end
- the liquid medium 401 is in the The pressure generated at the inflow end of the valve 10 is greater than the pressure at the outflow end of the valve 10 , that is, the liquid medium 401 forms a pressure difference between the inflow and outflow ends of the valve 10 to open the valve 10 .
- the driving mechanism 500 drives the fixing module 200 to drive the valve 10 to move in the direction from the inflow end of the valve 10 to the outflow end, the pressure difference is released and the valve 10 is closed.
- the driving mechanism 500 may include a power source 502 and a transmission part 503 .
- the power source 502 is disposed outside the casing 100 and connected to the casing 100 .
- a part of the transmission part 503 is arranged outside the casing 100 and is connected to the power source 502 , and another part of the transmission part 503 extends into the inner cavity and is connected to the fixing module 200 , It is used to drive the fixing module 200 to move along the axis direction of the first observation window 101 under the action of the power source 502 , and drive the valve 10 to move synchronously, so as to realize the opening or closing of the valve 10 .
- the driving mechanism 500 further includes a first buffer member 504 and a second buffer member 505 .
- the first buffer member 504 is, for example, a spring, which is disposed between the power source 502 and the housing 100 to buffer the vibration caused by the power source 502 during operation.
- the transmission part 503 includes a connecting block 503a and a rod 503b, wherein the connecting block 503a is disposed outside the housing 100 and connected to the power source 502, and one end of the rod 503b is connected to the connecting block. 503a is connected, and the other end extends into the inner cavity and is connected to the fixing module 200 .
- the second buffer member 505 is, for example, a bellows tube, which is disposed outside the housing 100 and is sleeved on the rod member 503b.
- One end of the second buffer member 505 is sealedly connected to the transmission portion 503 at the connecting block 503a, and the other end is sealed.
- One end is sealedly connected with the outer wall of the housing 100 to avoid leakage of the liquid medium, and the vibration caused by the movement of the transmission part 503 is slowed down through the expansion and contraction of the bellows.
- the movement frequency of the valve 10 is determined by the operating frequency of the driving mechanism 500 , so the flickering frequency f 1 of the strobe light can be adjusted according to the operating frequency of the driving mechanism 500 .
- the testing device may further include a control mechanism 600, the control mechanism 600 and the driving mechanism 500 (specifically, the power source 502, more specifically, the power source 502) and the strobe light (specifically, the control part of the strobe light) are connected in communication, for automatically adjusting the flashing frequency of the strobe light according to the operating frequency of the driving mechanism 500, so as to Quickly adapt the two to improve test efficiency.
- the test device is also provided with an adjustment mechanism 700, which is electrically connected to the control part of the strobe light, and is used for the observer to manually adjust the flickering frequency of the strobe light.
- the testing device preferably further includes an isolation cover 800 , which is covered on the strobe light and isolates the liquid medium 401 from the flash light source 301 .
- the isolation cover 800 may be an integral structure, covering all the flash light sources 301 at the same time, or the isolation cover includes a plurality of sub-isolation covers, each of which covers a part of the flash light source (not shown in the figure).
- the material of the isolation cover 800 may be transparent acrylic.
- the testing device further includes a temperature maintaining mechanism for maintaining the liquid medium 401 at a predetermined temperature, for example, about 37°C.
- the temperature maintaining mechanism can include a numerical control module, a temperature sensor and a heating rod 901, wherein the temperature sensor and the heating rod 901 can be arranged in the inner cavity and are respectively connected in communication with the numerical control module.
- the module is used for controlling the heating rod 901 to work according to the actual temperature of the liquid medium 401 sensed by the temperature sensor, so as to keep the liquid medium 401 at the predetermined temperature during the test.
- the test device also includes a pressure monitoring mechanism 902, which is arranged on the housing 100 and is used to monitor the pressure at both ends of the valve 10 in the axial direction, so as to ensure that the valve 10 performs a durability test under a predetermined pressure condition .
- a pressure monitoring mechanism 902 which is arranged on the housing 100 and is used to monitor the pressure at both ends of the valve 10 in the axial direction, so as to ensure that the valve 10 performs a durability test under a predetermined pressure condition .
- a second observation window 102 parallel to the axis of the first observation window 101 may be provided on the casing 100 for observing the valve 10 from the side.
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- Health & Medical Sciences (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Details Of Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
Description
Claims (13)
- 一种瓣膜耐久性的测试装置,其特征在于,包括A test device for valve durability, comprising:壳体,具有一内腔,所述内腔用于容纳液体介质,且所述壳体上设有第一观察窗,所述第一观察窗用于观察位于所述内腔中的瓣膜;a casing, which has an inner cavity, the inner cavity is used for accommodating a liquid medium, and the casing is provided with a first observation window, and the first observation window is used to observe the valve located in the inner cavity;固定模块,设置在所述内腔中,并用于安装所述瓣膜;以及,a fixation module disposed in the lumen and used to mount the valve; and,频闪灯,设置在所述内腔中,并包括多个闪光源,多个所述闪光源围绕所述固定模块的轴线布置。The strobe light is arranged in the inner cavity and includes a plurality of flash light sources, and the plurality of flash light sources are arranged around the axis of the fixed module.
- 根据权利要求1所述的瓣膜耐久性的测试装置,其特征在于,所述第一观察窗的轴线与所述固定模块的轴线相互平行或重叠。The device for testing valve durability according to claim 1, wherein the axis of the first observation window and the axis of the fixing module are parallel to or overlap with each other.
- 根据权利要求2所述的瓣膜耐久性的测试装置,其特征在于,在所述固定模块的轴向上,任一个所述闪光源到所述第一观察窗的距离小于所述瓣膜上任意一点到所述第一观察窗的距离。The device for testing valve durability according to claim 2, wherein in the axial direction of the fixed module, the distance from any one of the flash sources to the first observation window is smaller than any point on the valve distance to the first viewing window.
- 根据权利要求2所述的瓣膜耐久性的测试装置,其特征在于,在垂直于所述固定模块的轴线的方向上,任一个所述闪光源到所述瓣膜的轴线的距离大于或等于所述瓣膜上任意一点到所述瓣膜的轴线的距离。The device for testing valve durability according to claim 2, wherein in a direction perpendicular to the axis of the fixing module, the distance from any one of the flash sources to the axis of the valve is greater than or equal to the distance from the axis of the valve. The distance from any point on a valve to the axis of the valve.
- 根据权利要求1-4中任一项所述的瓣膜耐久性的测试装置,其特征在于,多个所述闪光源绕所述固定模块的轴线中心对称地布置。The device for testing valve durability according to any one of claims 1 to 4, wherein a plurality of the flash light sources are centrally symmetrically arranged around the axis of the fixing module.
- 根据权利要求1所述的瓣膜耐久性的测试装置,其特征在于,所述测试装置还包括隔离罩,所述隔离罩罩设在所述频闪灯上并隔离所述闪光源与所述液体介质。The valve durability test device according to claim 1, wherein the test device further comprises an isolation cover, the isolation cover is provided on the strobe light and isolates the flash source from the liquid medium.
- 根据权利要求1所述的瓣膜耐久性的测试装置,其特征在于,所述测试装置还包括调节机构,所述调节机构与所述频闪灯电性连接并用于调节所述频闪灯的闪烁频率。The valve durability testing device according to claim 1, wherein the testing device further comprises an adjustment mechanism, the adjustment mechanism is electrically connected with the strobe light and used to adjust the flickering of the strobe light frequency.
- 根据权利要求1或7所述的瓣膜耐久性的测试装置,其特征在于,所述测试装置还包括驱动机构和控制机构;所述驱动机构用于驱使所述瓣膜在打开状态与闭合状态之间切换;所述控制机构与所述驱动机构及所述频闪灯通信连接,用于根据所述驱动机构的工作频率调节所述频闪灯的闪烁频率。The test device for valve durability according to claim 1 or 7, wherein the test device further comprises a driving mechanism and a control mechanism; the driving mechanism is used to drive the valve between an open state and a closed state Switching; the control mechanism is connected in communication with the driving mechanism and the strobe light, and is used for adjusting the flickering frequency of the strobe light according to the operating frequency of the driving mechanism.
- 根据权利要求8所述的瓣膜耐久性的测试装置,其特征在于,所述驱动机构包括相连接的溶液泵和动力源;所述溶液泵设置在所述内腔中,并用于浸没在所述液体介质内部;所述动力源用于驱使所述溶液泵沿靠近或远离所述瓣膜的方向运动;所述动力源与所述控制机构通信连接;The device for testing valve durability according to claim 8, wherein the driving mechanism comprises a connected solution pump and a power source; the solution pump is arranged in the inner cavity and is used to be immersed in the inside the liquid medium; the power source is used to drive the solution pump to move in a direction close to or away from the valve; the power source is connected in communication with the control mechanism;所述测试装置被配置为当所述动力源驱使所述溶液泵沿第一方向运动时,所述液体介质在所述瓣膜的流入端和流出端之间产生压差,并使所述瓣膜在所述压差的作用下打开;当所述动力源驱使所述溶液泵沿第二方向运动时,所述压差解除并使所述瓣膜闭合;所述第二方向与所述第一方向相反。The test device is configured such that when the power source drives the solution pump in a first direction, the liquid medium creates a pressure differential between the inflow and outflow ends of the valve and causes the valve to move in a first direction. open under the action of the pressure difference; when the power source drives the solution pump to move in a second direction, the pressure difference is released and the valve is closed; the second direction is opposite to the first direction .
- 根据权利要求9所述的瓣膜耐久性的测试装置,其特征在于,所述内腔还用于容纳气体介质,所述气体介质位于所述液体介质远离所述第一观察窗的一侧。The device for testing valve durability according to claim 9, wherein the inner cavity is further used to accommodate a gas medium, and the gas medium is located on a side of the liquid medium away from the first observation window.
- 根据权利要求8所述的瓣膜耐久性的测试装置,其特征在于,所述固定模块可活动地设置在所述内腔中;所述驱动机构至少部分地设置在所述内腔中并与所述固定模块连接,所述驱动机构用于驱使所述固定模块带动所述瓣膜做往复运动;The device for testing valve durability according to claim 8, wherein the fixing module is movably arranged in the inner cavity; the driving mechanism is at least partially arranged in the inner cavity and is connected with the inner cavity. The fixed module is connected, and the drive mechanism is used to drive the fixed module to drive the valve to reciprocate;所述测试装置被配置为当所述驱动机构驱使所述瓣膜沿所述瓣膜的流出端指向流入端的方向移动时,所述液体介质在所述瓣膜的流入端和流出端之间产生压差,并使所述瓣膜在所述压差的作用下打开;当所述驱动机构驱使所述瓣膜沿所述瓣膜的流入端指向流出端的方向移动时,所述压差解除并使所述瓣膜闭合。the testing device is configured such that the liquid medium creates a pressure differential between the inflow and outflow ends of the valve when the drive mechanism urges the valve to move in a direction from the outflow end of the valve toward the inflow end, The valve is opened under the action of the pressure difference; when the driving mechanism drives the valve to move in the direction from the inflow end of the valve to the outflow end, the pressure difference is released and the valve is closed.
- 根据权利要求10所述的瓣膜耐久性的测试装置,其特征在于,所述驱动机构包括相互连接的动力源和传动部,所述动力源设置在所述壳体外部,并与所述控制机构通信连接;所述传动部的一部分位于所述壳体外部并与所述动力源连接,另一部分伸入所述内腔并与所述固定模块连接;The device for testing valve durability according to claim 10, wherein the driving mechanism comprises a power source and a transmission part that are connected to each other, the power source is provided outside the casing, and is connected with the control mechanism a communication connection; a part of the transmission part is located outside the casing and is connected with the power source, and the other part extends into the inner cavity and is connected with the fixed module;所述驱动机构还包括第一缓冲件,设置在所述动力源与所述壳体之间;和/或,所述驱动机构包括第二缓冲件,位于所述壳体外部,并设置在所述壳体与所述传动部之间。The driving mechanism further includes a first buffer member disposed between the power source and the casing; and/or the driving mechanism includes a second buffer member located outside the casing and disposed at the between the housing and the transmission part.
- 根据权利要求1所述的瓣膜耐久性的测试装置,其特征在于,所述 测试装置还包括温度保持机构,用于使所述液体介质保持在预定温度;和/或,所述测试装置还包括压力监测机构,设置在壳体上,用于监测所述瓣膜的轴向两端的压力。The valve durability testing device according to claim 1, characterized in that, the testing device further comprises a temperature maintaining mechanism for keeping the liquid medium at a predetermined temperature; and/or, the testing device further comprises The pressure monitoring mechanism is arranged on the casing and is used for monitoring the pressure at both axial ends of the valve.
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Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1068031A (en) * | 1991-06-26 | 1993-01-20 | 清华大学 | A kind of Cardiac valve prosthesis fatigue life test method and device |
US5846828A (en) * | 1995-06-07 | 1998-12-08 | Advanced Tissue Sciences | Apparatus and method for sterilizing, seeding, culturing, storing, shipping, and testing tissue, synthetic, or mechanical heart valves orvalve segments |
CN103622763A (en) * | 2012-08-28 | 2014-03-12 | 苏州爱尔博生物医学工程产品研发有限公司 | Valve fatigue-life testing device |
US20150128684A1 (en) * | 2012-06-25 | 2015-05-14 | Vivitro Labs Inc. | Heart valve testing apparatus and methods |
CN110269726A (en) * | 2019-06-27 | 2019-09-24 | 湖北雄志医疗设备科技有限公司 | A kind of mechanical heart valve analoging detecting device |
CN110538003A (en) * | 2019-08-30 | 2019-12-06 | 宁波健世生物科技有限公司 | Heart valve opening and closing detector |
CN111789700A (en) * | 2020-06-30 | 2020-10-20 | 成都赛拉诺医疗科技有限公司 | Valve function testing device |
CN215651789U (en) * | 2021-03-22 | 2022-01-28 | 上海微创心通医疗科技有限公司 | Valve durability testing device |
-
2021
- 2021-03-22 CN CN202110302163.5A patent/CN115105251A/en not_active Withdrawn
- 2021-12-17 AU AU2021435599A patent/AU2021435599A1/en active Pending
- 2021-12-17 WO PCT/CN2021/139374 patent/WO2022199154A1/en active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1068031A (en) * | 1991-06-26 | 1993-01-20 | 清华大学 | A kind of Cardiac valve prosthesis fatigue life test method and device |
US5846828A (en) * | 1995-06-07 | 1998-12-08 | Advanced Tissue Sciences | Apparatus and method for sterilizing, seeding, culturing, storing, shipping, and testing tissue, synthetic, or mechanical heart valves orvalve segments |
US20150128684A1 (en) * | 2012-06-25 | 2015-05-14 | Vivitro Labs Inc. | Heart valve testing apparatus and methods |
CN103622763A (en) * | 2012-08-28 | 2014-03-12 | 苏州爱尔博生物医学工程产品研发有限公司 | Valve fatigue-life testing device |
CN110269726A (en) * | 2019-06-27 | 2019-09-24 | 湖北雄志医疗设备科技有限公司 | A kind of mechanical heart valve analoging detecting device |
CN110538003A (en) * | 2019-08-30 | 2019-12-06 | 宁波健世生物科技有限公司 | Heart valve opening and closing detector |
CN111789700A (en) * | 2020-06-30 | 2020-10-20 | 成都赛拉诺医疗科技有限公司 | Valve function testing device |
CN215651789U (en) * | 2021-03-22 | 2022-01-28 | 上海微创心通医疗科技有限公司 | Valve durability testing device |
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