CN214408508U - Portable artificial heart valve fatigue life testing device - Google Patents
Portable artificial heart valve fatigue life testing device Download PDFInfo
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- CN214408508U CN214408508U CN202120401356.1U CN202120401356U CN214408508U CN 214408508 U CN214408508 U CN 214408508U CN 202120401356 U CN202120401356 U CN 202120401356U CN 214408508 U CN214408508 U CN 214408508U
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Abstract
The utility model discloses a portable artificial heart valve fatigue life testing arrangement, including universal wheel, support base, bar, the jar body, water tank, supporting shoe, blast pipe, liquid transmission device, hydraulic pressure stabilising arrangement and detection device, the universal wheel is located and is supported the base below, the universal wheel is equipped with four groups, four groups the universal wheel is the equidistance and distributes, the bar is located on supporting the base lateral wall, the water tank is located on supporting the base, the supporting shoe is located on supporting the base, the jar body is located on the supporting shoe, the blast pipe is located on the jar body lateral wall, be equipped with discharge valve on the blast pipe, liquid transmission device locates on the water tank on upper portion, hydraulic pressure stabilising arrangement locates on jar body lateral wall, detection device locates on the water tank. The utility model relates to a detecting instrument technical field specifically provides a portable artificial heart valve fatigue life testing arrangement of stable liquid pressure that the jar body was gone into in the detection device.
Description
Technical Field
The utility model relates to a detecting instrument technical field specifically is a portable artificial heart valve fatigue life testing arrangement.
Background
The heart valve refers to a valve between an atrium and a ventricle or between a ventricle and an artery. Valves play a key role in the blood circulation activity of the heart which is never stopped: the valve acts as an entrance guard, preventing blood from flowing back into the atrium or ventricle just leaving; the heart valve disease is one of the main cardiovascular diseases at present, has a plurality of etiological factors such as rheumatism, degeneration, congenital and the like, and the only treatment method for most patients with the heart valve disease is to carry out artificial heart valve replacement; the artificial heart valve performance in-vitro detection technology and device comprises an artificial heart valve static forward flow test device, a steady leakage test device and a pulsating flow test device, a detection environment similar to a human body is simulated through cooperation of a liquid circulation supply and flow maintaining mechanism, a liquid temperature maintaining mechanism and a valve performance measuring mechanism, the test environment is stable, the performance is reliable, and the device has a great effect on improvement of artificial heart valve test verification and production detection work efficiency.
SUMMERY OF THE UTILITY MODEL
To the above circumstances, for overcoming current technical defect, the utility model provides a portable artificial heart valve fatigue life testing arrangement of stable liquid pressure in jar internal entering detection device.
The utility model adopts the following technical scheme: the utility model relates to a portable artificial heart valve fatigue life testing arrangement, including universal wheel, support base, bar, jar body, water tank, supporting shoe, blast pipe, liquid transmission device, hydraulic pressure stabilising arrangement and detection device, the universal wheel is located and is supported the base below, the universal wheel is equipped with four groups, four groups the universal wheel is the equidistance and distributes, the bar is located on supporting the base lateral wall, the water tank is located on supporting the base, the supporting shoe is located on supporting the base, the jar body is located on the supporting shoe, the blast pipe is located on jar body lateral wall, be equipped with discharge valve on the blast pipe, liquid transmission device upper portion is located on the water tank, hydraulic pressure stabilising arrangement is located on jar body lateral wall, detection device is located on the water tank; the hydraulic stabilizing device comprises a liquid control pipe, an adjusting column, a graduated scale, a driving screw, a first bevel gear, a support frame, a support plate, a second bevel gear, a pointer and a driving motor, wherein the support frame is arranged on the side wall of the tank body, the support frame is arranged in a U-shaped structure, the graduated scale is arranged on the support frame, one end of the liquid control pipe is arranged on the bottom wall of the tank body, the liquid control pipe is arranged in a U-shaped structure, the other end of the liquid control pipe penetrates through the bottom wall of the support frame and is arranged above the support frame, the adjusting column is slidably arranged on the inner side wall of the adjusting column of the liquid control pipe, the pointer is arranged on the side wall of the adjusting column, the pointer is slidably arranged on the graduated scale, a lifting cavity with an opening at the bottom end is arranged in the adjusting column, a water outlet is arranged at the top end of the adjusting column, the support plate is arranged on the support frame, the driving motor is arranged on the support plate, and the second bevel gear is arranged on the driving motor, the first bevel gear is rotatably arranged on the supporting plate, a threaded hole is formed in the first bevel gear, the driving screw is arranged on the first bevel gear in a threaded connection mode, the bottom end of the driving screw penetrates through the supporting plate and is arranged on the lower portion of the supporting plate, the first bevel gear is meshed with the second bevel gear, the top end of the adjusting column is arranged on the bottom wall of the driving screw, a sealing groove is formed in the outer side wall of the adjusting column, the sealing groove is arranged in a circular structure, and a sealing ring is arranged in the sealing groove; the liquid transmission device comprises a liquid inlet pipe, a hydraulic pump and a flowmeter, wherein the hydraulic pump is arranged on the water tank, the flowmeter is arranged on the hydraulic pump, one end of the liquid inlet pipe is arranged on the flowmeter, and the other end of the liquid inlet pipe is arranged on the tank body.
Further, detection device includes drain pipe, back flow, simulation case, baffle and valve switch determine module, from left to right be equipped with first simulation chamber and second simulation chamber in proper order in the simulation case, drain pipe one end is located on the jar body, the drain pipe other end runs through on simulation roof wall locates first simulation roof wall, back flow one end runs through simulation roof wall and locates on the second simulation roof wall, the back flow other end is located on the water tank lateral wall, first simulation lateral wall is equipped with the through-hole, first simulation lateral wall is equipped with upper end open-ended and places the chamber, the baffle slides and locates and places the intracavity, baffle upper portion is equipped with sealed the pad, be equipped with the mounting hole on the baffle, the mounting hole communicates with each other with the through-hole, valve switch determine module locates the second simulation intracavity.
Further, valve switch determine module includes sleeve, pressure sensor, guide bar, bracing piece, balancing pole, push rod, counter, hydraulic stem and fly leaf, the counter is located on the tank body lateral wall, the sleeve is located on the second simulation chamber lateral wall, pressure sensor locates in the sleeve, pressure sensor and counter electric connection, the bracing piece is located on the second simulation chamber lateral wall, the balancing pole middle part is articulated to be located on the bracing piece, the guide bar slides and locates on the sleeve inside wall, on the balancing pole is located to guide bar one end, on the balancing pole is located to push rod one end, the push rod other end slides and locates in the through-hole, the hydraulic stem is located on the simulation case lateral wall, the hydraulic stem movable end runs through the simulation case lateral wall and slides and locates in the second simulation intracavity, the hydraulic stem movable end is located to the fly leaf.
Further, the universal wheel is provided with a braking device.
Further, the driving motor is a forward and reverse rotating motor.
Adopt above-mentioned structure the utility model discloses the beneficial effect who gains as follows: according to the portable artificial heart valve fatigue life testing device, the portable artificial heart valve fatigue life testing device is convenient to move through the cooperation of the universal wheels and the grab bars; the hydraulic pressure stabilizing device is matched with the tank body to realize the stable control of the pressure of the liquid entering the detection device in the tank body by the portable artificial heart valve fatigue life testing device, and the fatigue resistance of the valve can be quickly and effectively detected by the portable artificial heart valve fatigue life testing device through the detection device.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of a portable artificial heart valve fatigue life testing device according to the present invention;
FIG. 2 is a schematic structural diagram of a hydraulic stabilizing device of the portable artificial heart valve fatigue life testing device of the present invention;
fig. 3 is a schematic structural diagram of a detection device of the portable artificial heart valve fatigue life testing device of the present invention.
Wherein, 1, universal wheels, 2, a supporting base, 3, a grab bar, 4, a tank body, 5, a water tank, 6, a supporting block, 7, an exhaust pipe, 8, a liquid transmission device, 9, a hydraulic stabilizing device, 10, a detection device, 11, an exhaust valve, 12, a liquid control pipe, 13, an adjusting column, 14, a graduated scale, 15, a driving screw, 16, a first bevel gear, 17, a supporting frame, 18, a supporting plate, 19, a second bevel gear, 20, a pointer, 21, a driving motor, 22, a lifting cavity, 23, a water outlet, 24, a sealing ring, 25, a liquid inlet pipe, 26, a hydraulic pump, 27, a flowmeter, 28, a liquid outlet pipe, 29, a return pipe, 30, a simulation box, 31, a partition plate, 32, a first simulation cavity, 33, a second simulation cavity, 34, a through hole, 35, a mounting hole, 36, a sleeve, 37, a pressure sensor, 38, a guide rod, 39, a supporting rod, 40 and a balance rod, 41. push rod, 42, counter, 43, hydraulic stem, 44, movable plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in fig. 1-3, the utility model adopts the following technical scheme: a portable artificial heart valve fatigue life testing device comprises universal wheels 1, a supporting base 2, a grab bar 3, a tank body 4, a water tank 5, a supporting block 6, an exhaust pipe 7, a liquid transmission device 8, a hydraulic stabilizing device 9 and a detection device 10, the universal wheels 1 are arranged below the supporting base 2, four groups of universal wheels 1 are arranged, the four groups of universal wheels 1 are distributed at equal intervals, the grab bar 3 is arranged on the side wall of the supporting base 2, the water tank 5 is arranged on the supporting base 2, the supporting block 6 is arranged on the supporting base 2, the tank body 4 is arranged on the supporting block 6, the exhaust pipe 7 is arranged on the side wall of the tank body 4, an exhaust valve 11 is arranged on the exhaust pipe 7, the upper part of the liquid transmission device 8 is arranged on the water tank 5, the hydraulic stabilizing device 9 is arranged on the side wall of the tank body 4, and the detection device 10 is arranged on the water tank 5; the hydraulic stabilizing device 9 comprises a liquid control pipe 12, an adjusting column 13, a graduated scale 14, a driving screw 15, a first bevel gear 16, a support frame 17, a support plate 18, a second bevel gear 19, a pointer 20 and a driving motor 21, wherein the support frame 17 is arranged on the side wall of the tank body 4, the support frame 17 is arranged in a U-shaped structure, the graduated scale 14 is arranged on the support frame 17, one end of the liquid control pipe 12 is arranged on the bottom wall of the tank body 4, the liquid control pipe 12 is arranged in a U-shaped structure, the other end of the liquid control pipe 12 penetrates through the bottom wall of the support frame 17 and is arranged above the support frame 17, the adjusting column 13 is slidably arranged on the inner side wall of the adjusting column 13 of the liquid control pipe 12, the pointer 20 is arranged on the side wall of the adjusting column 13, the pointer 20 is slidably arranged on the graduated scale 14, a lifting cavity 22 with an opening at the bottom end is arranged in the adjusting column 13, a water outlet 23 is arranged at the top end of the adjusting column 13, the support plate 18 is arranged on the support frame 17, the driving motor 21 is arranged on the supporting plate 18, the second bevel gear 19 is arranged on the driving motor 21, the first bevel gear 16 is rotatably arranged on the supporting plate 18, a threaded hole is formed in the first bevel gear 16, the driving screw 15 is arranged on the first bevel gear 16 through threaded connection, the bottom end of the driving screw 15 penetrates through the supporting plate 18 and is arranged at the lower part of the supporting plate 18, the first bevel gear 16 is meshed with the second bevel gear 19, the top end of the adjusting column 13 is arranged on the bottom wall of the driving screw 15, a sealing groove is formed in the outer side wall of the adjusting column 13 and is arranged in a circular structure, and a sealing ring 24 is arranged in the sealing groove; the liquid transmission device 8 comprises a liquid inlet pipe 25, a hydraulic pump 26 and a flowmeter 27, wherein the hydraulic pump 26 is arranged on the water tank 5, the flowmeter 27 is arranged on the hydraulic pump 26, one end of the liquid inlet pipe 25 is arranged on the flowmeter 27, and the other end of the liquid inlet pipe 25 is arranged on the tank body 4.
Wherein, the detection device 10 comprises a liquid outlet pipe 28, a return pipe 29, a simulation box 30, a clapboard 31 and a valve switch detection component, a first simulation cavity 32 and a second simulation cavity 33 are sequentially arranged in the simulation box 30 from left to right, one end of the liquid outlet pipe 28 is arranged on the tank body 4, the other end of the liquid outlet pipe 28 penetrates through the top wall of the simulation box 30 and is arranged on the top wall of the first simulation cavity 32, one end of the return pipe 29 penetrates through the top wall of the simulation box 30 and is arranged on the top wall of the second simulation cavity 33, the other end of the return pipe 29 is arranged on the side wall of the water tank 5, the side wall of the first simulation cavity 32 is provided with a through hole 34, the side wall of the first simulation cavity 32 is provided with a placing cavity with an opening at the upper end, the clapboard 31 is arranged in the placing cavity in a sliding way, the upper portion of the partition plate 31 is provided with a sealing gasket, the partition plate 31 is provided with a mounting hole 35, the mounting hole 35 is communicated with the through hole 34, and the valve switch detection assembly is arranged in the second simulation cavity 33. The valve switch detection assembly comprises a sleeve 36, a pressure sensor 37, a guide rod 38, a support rod 39, a balance rod 40, a push rod 41, a counter 42, a hydraulic rod 43 and a movable plate 44, wherein the counter 42 is arranged on the side wall of the tank body 4, the sleeve 36 is arranged on the side wall of the second simulation cavity 33, the pressure sensor 37 is arranged in the sleeve 36, the pressure sensor 37 is electrically connected with the counter 42, the support rod 39 is arranged on the side wall of the second simulation cavity 33, the middle part of the balance rod 40 is hinged on the support rod 39, the guide rod 38 is arranged on the inner side wall of the sleeve 36 in a sliding manner, one end of the guide rod 38 is arranged on the balance rod 40, one end of the push rod 41 is arranged on the balance rod 40, the other end of the push rod 41 is arranged in the through hole 34 in a sliding manner, the hydraulic rod 43 is arranged on the side wall of the simulation box 30, and the movable end of the hydraulic rod 43 penetrates through the side wall of the simulation box 30 and is arranged in the second simulation cavity 33 in a sliding manner, the movable plate 44 is disposed at the movable end of the hydraulic rod 43. The universal wheel 1 is provided with a braking device. The driving motor 21 is a forward and reverse rotating motor.
When the portable artificial heart valve fatigue life testing device is used, a worker pulls the grab bar 3, so that the universal wheel 1 moves the portable artificial heart valve fatigue life testing device, the portable artificial heart valve fatigue life testing device moves to a working area, and the universal wheel 1 is braked to prevent the portable artificial heart valve fatigue life testing device from moving randomly; installing the artificial heart valve into the installation hole 35, placing the partition plate 31 in the placement cavity, wherein the sealing gasket can effectively prevent liquid from flowing out of the simulation box 30 through the partition plate 31, starting the driving motor 21, driving the second bevel gear 19 to rotate by the driving motor 21, driving the first bevel gear 16 to synchronously rotate by the second bevel gear 19, driving the driving screw 15 to rotate by the first bevel gear 16, so that the driving screw 15 moves up and down, driving the adjusting column 13 by the driving screw 15 to move, adjusting the relative position between the adjusting column 13 and the liquid control tube 12, so that the port of the adjusting column 13 extending out of the liquid control tube 12 moves in the vertical direction, sliding the pointer 20 on the graduated scale 14, and observing the reading number of the graduated scale 14 until the pointer 20 is at the specified height; starting the hydraulic pump 26, observing the indication number of the flow meter 27, ensuring that the pressure pump injects liquid with stable flow into the tank 4, adjusting the height of the adjusting column 13 extending out of one end of the liquid control tube 12 by observing the indication number of the graduated scale 14, ensuring that the liquid level in the tank 4 is the same as the height of the adjusting tube extending out of one end of the liquid control tube 12, ensuring that the liquid level in the tank 4 is in different liquid level conditions, recording test data, recording the liquid generated by the pressure generated at different liquid level heights, enabling the liquid to sequentially enter the first simulation cavity 32 through the liquid outlet tube 28, enabling the blood to impact the artificial heart valve, enabling the artificial heart valve to bulge, contacting the push rod 41 and pushing the push rod 41 backwards after contacting, driving one end of the balance rod 40 to tilt, so as to enable one side of the guide rod 38 to descend to generate the pressure on the pressure sensor 37, extending and contracting in the sleeve 36 through the guide rod 38, thereby continuously contacting the pressure sensor 37, the pressure sensor 37 is squeezed to generate an electric signal, the electric signal is transmitted to the counter 42, the electric signal is counted by the counter 42 and displayed on a display, the hydraulic rod 43 is started, the hydraulic rod 43 pushes the movable plate 44 to squeeze the test liquid in the second simulation cavity 33, the valve is closed, the test liquid flows back to the water tank 5 through the return pipe 29, after the hydraulic rod 43 is reset, blood is repeatedly circulated and accumulated for multiple times, and in this way, the valve opening and closing times are accumulated and counted, the using times and the fatigue resistance characteristic of the valve are tested, the liquid generated by the pressure generated by different liquid level heights is sequentially tested, the using times and the fatigue resistance characteristic of the valve are tested, and the pressure resistance of the valve is judged.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a portable artificial heart valve fatigue life testing arrangement which characterized in that: the device comprises universal wheels, a supporting base, a grab bar, a tank body, a water tank, supporting blocks, an exhaust pipe, a liquid transmission device, a hydraulic stabilizing device and a detection device, wherein the universal wheels are arranged below the supporting base, four groups of universal wheels are arranged on the universal wheels and distributed at equal intervals, the grab bar is arranged on the side wall of the supporting base, the water tank is arranged on the supporting base, the supporting blocks are arranged on the supporting base, the tank body is arranged on the supporting blocks, the exhaust pipe is arranged on the side wall of the tank body, the exhaust pipe is provided with an exhaust valve, the upper part of the liquid transmission device is arranged on the water tank, the hydraulic stabilizing device is arranged on the side wall of the tank body, and the detection device is arranged on the water tank; the hydraulic stabilizing device comprises a liquid control pipe, an adjusting column, a graduated scale, a driving screw, a first bevel gear, a support frame, a support plate, a second bevel gear, a pointer and a driving motor, wherein the support frame is arranged on the side wall of the tank body, the support frame is arranged in a U-shaped structure, the graduated scale is arranged on the support frame, one end of the liquid control pipe is arranged on the bottom wall of the tank body, the liquid control pipe is arranged in a U-shaped structure, the other end of the liquid control pipe penetrates through the bottom wall of the support frame and is arranged above the support frame, the adjusting column is slidably arranged on the inner side wall of the adjusting column of the liquid control pipe, the pointer is arranged on the side wall of the adjusting column, the pointer is slidably arranged on the graduated scale, a lifting cavity with an opening at the bottom end is arranged in the adjusting column, a water outlet is arranged at the top end of the adjusting column, the support plate is arranged on the support frame, the driving motor is arranged on the support plate, and the second bevel gear is arranged on the driving motor, the first bevel gear is rotatably arranged on the supporting plate, a threaded hole is formed in the first bevel gear, the driving screw is arranged on the first bevel gear in a threaded connection mode, the bottom end of the driving screw penetrates through the supporting plate and is arranged on the lower portion of the supporting plate, the first bevel gear is meshed with the second bevel gear, the top end of the adjusting column is arranged on the bottom wall of the driving screw, a sealing groove is formed in the outer side wall of the adjusting column, the sealing groove is arranged in a circular structure, and a sealing ring is arranged in the sealing groove; the liquid transmission device comprises a liquid inlet pipe, a hydraulic pump and a flowmeter, wherein the hydraulic pump is arranged on the water tank, the flowmeter is arranged on the hydraulic pump, one end of the liquid inlet pipe is arranged on the flowmeter, and the other end of the liquid inlet pipe is arranged on the tank body.
2. The portable artificial heart valve fatigue life testing device of claim 1, wherein: the detection device comprises a liquid outlet pipe, a backflow pipe, a simulation box, a partition board and a valve switch detection assembly, wherein a first simulation cavity and a second simulation cavity are sequentially arranged in the simulation box from left to right, one end of the liquid outlet pipe is arranged on the tank body, the other end of the liquid outlet pipe penetrates through the top wall of the simulation box and is arranged on the top wall of the first simulation cavity, one end of the backflow pipe penetrates through the top wall of the simulation box and is arranged on the top wall of the second simulation cavity, the other end of the backflow pipe is arranged on the side wall of the water tank, the side wall of the first simulation cavity is provided with a through hole, the side wall of the first simulation cavity is provided with an upper end opening containing cavity, the partition board is slidably arranged in the containing cavity, the upper portion of the partition board is provided with a sealing gasket, the partition board is provided with a mounting hole, the mounting hole is communicated with the through hole, and the valve switch detection assembly is arranged in the second simulation cavity.
3. The portable artificial heart valve fatigue life testing device of claim 2, wherein: valve switch determine module includes sleeve, pressure sensor, guide bar, bracing piece, balancing pole, push rod, counter, hydraulic stem and fly leaf, the counter is located on the tank body lateral wall, the sleeve is located on the second simulation chamber lateral wall, pressure sensor locates in the sleeve, pressure sensor and counter electric connection, the bracing piece is located on the second simulation chamber lateral wall, the balancing pole middle part is articulated to be located on the bracing piece, the guide bar slides and locates on the sleeve inside wall, guide bar one end is located on the balancing pole, push rod one end is located on the balancing pole, the push rod other end slides and locates in the through-hole, the hydraulic stem is located on the simulation case lateral wall, the hydraulic stem expansion end runs through the simulation case lateral wall and slides and locates the second simulation intracavity, the hydraulic stem expansion end is located to the fly leaf.
4. The portable artificial heart valve fatigue life testing device of claim 1, wherein: the universal wheel is provided with a braking device.
5. The portable artificial heart valve fatigue life testing device of claim 1, wherein: the driving motor is a forward and reverse rotating motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120401356.1U CN214408508U (en) | 2021-02-23 | 2021-02-23 | Portable artificial heart valve fatigue life testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120401356.1U CN214408508U (en) | 2021-02-23 | 2021-02-23 | Portable artificial heart valve fatigue life testing device |
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| Publication Number | Publication Date |
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| CN214408508U true CN214408508U (en) | 2021-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120401356.1U Active CN214408508U (en) | 2021-02-23 | 2021-02-23 | Portable artificial heart valve fatigue life testing device |
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| CN (1) | CN214408508U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115389352A (en) * | 2022-10-27 | 2022-11-25 | 圣塔菲医疗科技(常州)有限公司 | Cardiovascular implant fatigue test device |
-
2021
- 2021-02-23 CN CN202120401356.1U patent/CN214408508U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115389352A (en) * | 2022-10-27 | 2022-11-25 | 圣塔菲医疗科技(常州)有限公司 | Cardiovascular implant fatigue test device |
| CN115389352B (en) * | 2022-10-27 | 2023-02-03 | 圣塔菲医疗科技(常州)有限公司 | Cardiovascular implant fatigue test device |
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