Steady flow test module with novel combination mode

Abstract

The invention discloses an artificial pulmonary artery single patch steady flow test module with a novel combination mode. The novel combination mode adopts a novel experimental pipe section structure and a novel pipe diameter change structure. The module specifically comprises an experimental pipe section 1 with a sealing groove, an experimental pipe section 2 with a pressure measuring hole, a metal snap ring 3, five variable-diameter rings (4, 5, 6, 7, 8) meeting different diameter changes, and an interface sleeve 9. The experimental pipe section structure, the test sample clamping mode and the diameter change mode are redesigned. Two semi-cylindrical structures are used to facilitate test sample clamping. A test sample is clamped through matching between the two semi-cylindrical structures and the metal snap ring. Smooth pipe diameter change is realized through the ring structures. The hydraulic pressure is tested through the pressure measuring hole. Components are sealed by sealing strips. The equipment can test the steady flow state of a cylindrical human pulmonary artery single patch, can meet the test requirements of different modes of artificial pulmonary artery single patches, and has a symmetrical fluid flow-in and flow-out design.

Description

technical field [0001] The invention relates to the technical field of steady-state flow testing of artificial pulmonary artery single-valve patches, in particular to a steady-state flow testing module with a novel combination mode. Specifically, it includes the experimental tube section structure for effectively fixing the artificial pulmonary artery single-valve patch, the fixing and clamping structure of the artificial pulmonary artery single-valve patch, and the interface sleeve and variable-caliber ring structure for changing the diameter of the tube, which are combined to ensure a stable state. The flow test went smoothly. Background technique [0002] According to ISO5840 and its related documents, the steady-state flow test of artificial interventional heart valves is an important standard for testing its performance and the only way for products to go on the market. At present, all kinds of steady-state flow experimental equipment used by relevant domestic inspecti...

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Problems solved by technology

[0005] The purpose of the present invention is to design a new experimental module with a new fixing method for the irrationality of the existing experimental tube section and bayonet module for fixing the artificial pulmonary artery single valve, simplify the equipment parts required for the experiment, and improve the experimental results at the same time. Effect of Lumen Structure on Fluid Flow, Improving Test Conditions for In Vitro Steady-state Flow Test of Artificial Pulmonary Artery Single Valve Patch

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