Artificial heart cannula joint capable of preventing ventricular wall blocking
An artificial heart and ventricle technology, applied in the field of biomedical engineering, can solve problems such as interruption of blood supply to the artificial heart, blocking the entrance of the cannula, threatening the life of patients, etc., to achieve the effect of improving stability and reducing impact
Inactive Publication Date: 2019-12-31
BEIJING UNIV OF TECH
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Problems solved by technology
The traditional artificial heart cannula is mainly fixed with the myocardium by suturing, and the drainage tube is not protected inside the myocardium.
Due to the pumping effect of the artificial heart, a low-pressure area will be generated at the intubation inlet, thereby attracting the nearby ventricular wall to approach the intubation inlet, thereby blocking the intubation inlet, causing interruption of blood supply to the artificial heart, and directly threatening the life of the patient
Method used
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Embodiment 1
[0018] In the artificial heart intubation connector for preventing ventricular wall blockage of the present invention, the support is braided by memory alloy wire, and the diameter of the alloy wire is 0.2 mm. The middle part of the stent expands outward along the outer diameter of the drainage tube, with an expanded diameter of 10mm and a stent height of 20mm; the connecting elbow has a diameter of 16mm, a length of 40mm, and a wall thickness of 1mm at a 50° angle; the suture ring is made of artificial blood vessel material, with an inner diameter of 16mm and an outer diameter of 18mm , height 2mm. Through in vitro experiments and animal experiments, when the suction degree of the artificial heart increases, the ventricular wall moves toward the inlet of the drainage tube, but it is supported by the stent, which prevents the ventricular wall from blocking the inlet of the drainage tube, and because of the support of the stent, the artificial heart cannulation It is fixed to t...
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The invention discloses an artificial heart cannula joint for preventing ventricular wall blocking, and belongs to the field of biomedical engineering. The joint consists of a drainage tube, a bracketand a suture ring; the bracket is fixed on the outer wall of the front section of the drainage tube, and the drainage tube and the bracket extend into left ventricle; the bracket is used for fixing the drainage tube in a heart chamber, supporting the heart chamber wall and preventing the heart chamber wall from blocking the inlet of the drainage tube; the drainage tube is used for drawing blood from the left ventricle into an artificial heart; and the suture ring is fixed on the outer layer of the drainage tube and is used for sewing with myocardium and fixing the whole joint. The joint can effectively solve the problem that the ventricular wall blocks the inlet of the artificial heart, improve the stability of the artificial heart, and reduce the influence of ventricular suction on the artificial heart.
Description
technical field [0001] The invention relates to an artificial heart intubation joint for preventing ventricular wall blockage, which belongs to the field of biomedical engineering. Background technique [0002] The artificial heart has gradually become one of the effective methods for treating heart failure. In clinical application, the artificial heart draws blood through a cannula inserted into the left ventricle and pumps it into the systemic circulation. The traditional artificial heart cannula is mainly fixed with the myocardium by suturing, and the drainage tube has no protection measures inside the myocardium. Due to the suction effect of the artificial heart, a low-pressure area will be generated at the entrance of the cannula, thereby attracting the nearby ventricular wall to approach the entrance of the cannula, thereby blocking the entrance of the cannula, causing interruption of blood supply to the artificial heart, and directly threatening the life of the patien...
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IPC IPC(8): A61M1/10
CPCA61M60/857
Inventor 高斌张琪常宇
Owner BEIJING UNIV OF TECH