A duct-type positive displacement pump
By setting a linkage structure in the hollow catheter to control the alternating opening of the blood inlet and outlet, the problem of the inefficiency of coordinating with the heartbeat in existing cardiac assist devices is solved, and efficient blood delivery and stable support are achieved.
CN117482379BActive Publication Date: 2026-06-30ANHUI TONGLING BIONIC TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ANHUI TONGLING BIONIC TECH CO LTD
- Filing Date
- 2023-11-15
- Publication Date
- 2026-06-30
AI Technical Summary
Technical Problem
Existing cardiac assist devices, while assisting the ventricles in pumping blood, are unable to effectively coordinate with the heart's natural rhythms to achieve efficient blood delivery.
Method used
By setting up a linkage structure in a hollow catheter, including an inner tube, an outer tube, and a central tube, the sliding of the suction element controls the alternating opening of the blood inlet and outlet, which, in conjunction with the heart's pulsation, enables efficient delivery of blood from the heart to the aorta.
Benefits of technology
It achieves efficient blood delivery, reduces thrombus formation, minimizes frictional damage to blood cells, adapts to the natural heartbeat, and provides stable hemodynamic support for patients with heart failure.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN117482379B_ABST
Abstract
This invention discloses a catheter-type volumetric pump, relating to the field of medical devices, comprising a hollow catheter with an inner tube and an outer tube forming an inner tube bleeding port and an outer tube bleeding port, respectively. By setting the outer tube, central tube, and inner tube, and simultaneously defining the relative positional relationship between the outer tube bleeding port, the inner tube bleeding port, and the central tube opening, the alternating opening and closing of the blood inlet and outlet is cleverly controlled under the linkage of the central tube and the suction device. This application sets up a linkage structure so that when the aortic valve unfolds, the suction device moves to gradually open the inlet and gradually close the bleeding port, while simultaneously creating a negative pressure inside and outside the tube, allowing blood from the heart to enter the inner tube from the inlet; when the aortic valve closes, the suction device moves again to gradually close the inlet and gradually open the bleeding port, while simultaneously increasing the pressure inside the tube, forcing the blood in the tube out from the bleeding port, and in conjunction with the heart's pulsation, the blood in the hollow catheter enters the aorta from the bleeding port.
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