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In-vitro hemodynamic characteristic test device

A fluid dynamics and characteristic testing technology, which is applied in the fields of biomedicine and measurement and control, can solve the problems of harsh experimental environment and conditions, difficult to realize, etc.

Active Publication Date: 2016-06-08
NANCHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] It is difficult to directly test the hemodynamic parameters of blood vessels in the human body, and the experimental environment and conditions are harsh.

Method used

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Embodiment Construction

[0024] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0025] see figure 1 , The in vitro hemodynamic characteristic testing device of the present invention includes a constant temperature control box 1, a peristaltic pump 3, a silicone hose 4, a non-contact microvelocimetry system 7, a transparent elastic hose 8 in a test area, and a pressure sensor 11. The piping of the whole device is connected in this way: the silicone hose 4 is connected to the thermostatic control box 1, one end of which passes through the pump head of the peristaltic pump 3, and one end of the silicone joint 6 at the inlet of the test area and the transparent elastic hose 8 of the test area Connected, the other end of the transparent elastic hose 8 in the test area is connected with the silicone joint 9 at the outlet of the test area, and the silicone joint 9 at the outlet of the test area is connected with the other en...

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Abstract

The invention relates to an in-vitro hemodynamic characteristic test device. The in-vitro hemodynamic characteristic test device mainly comprises a constant-temperature control box, a peristaltic pump, a pressure sensor, a non-contact microscope velocity-measuring system and the like. The constant-temperature control box is connected through a pipeline and forms a closed circulation loop, simulation blood containing tracer particles is placed in the constant-temperature control box, and an outlet of the constant-temperature control box penetrates through the peristaltic pump through a silica gel hose and is connected with an inlet of the constant-temperature control box through a testing region transparent elastic hose; valves are installed at the connecting positions of the silica gel hose and the testing region transparent elastic hose respectively on the front and rear portion of a testing region, and the testing region transparent elastic hose is connected with the silica gel hose through silica gel connectors; the pressure sensor and the non-contact microscope velocity-measuring system are installed at the test section position of the testing region transparent elastic hose. The test device can provide continuous simulation pulsation blood flow, is provided with a hemodynamic characteristic parameter testing system and is capable of testing hemodynamic characteristic parameters such as blood flow velocity, wall pressure and wall shear stress in different vessels.

Description

technical field [0001] The invention belongs to the technical field of biomedicine and measurement and control, and relates to an in vitro hemodynamic characteristic testing device. Background technique [0002] The shape and diameter of blood vessels in different parts of the human body are not the same, and the diameter of blood vessels may also change at different ages in the same individual. In the human vascular system, the main hemodynamic parameters are: blood flow velocity, wall shear force, wall pressure, etc. Among them, blood flow velocity, wall shear force and wall pressure represent blood flow, blood flow resistance and blood pressure, respectively. [0003] It is difficult to directly test the hemodynamic parameters of blood vessels in the human body due to the harsh experimental environment and conditions. Compared with the in vivo test, the in vitro test system has strong operability and high controllability, and is applied in the field of modern biomedical...

Claims

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Application Information

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IPC IPC(8): A61B5/026
CPCA61B5/026
Inventor 刘莹罗美红罗院明毕勇强张伟中
Owner NANCHANG UNIV
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