Interventional assembly of catheter pump, use method of interventional assembly and interventional blood pump system

Abstract

The invention discloses an intervention assembly of a catheter pump, a use method of the intervention assembly and an intervention type blood pump system. The catheter pump comprises a catheter, a foldable pump head and a coupler connected to the proximal end of the catheter. The intervention assembly comprises a tearable sheath and a folding sheath, wherein the tearable sheath can partially intervene into the vasculature of the subject through the puncture opening, and the catheter is sleeved with the folding sheath in a sliding mode. When sliding towards the far end, the folding sheath is suitable for containing the pump head in the unfolded state in the folding sheath so that the pump head can be switched to the folded state. The folding sheath is operably inserted into the tearable sheath such that the pump head is delivered through the tearable sheath in a collapsed state to the vasculature. The tearable sheath with the maximum size is operably stripped after the pump head enters the vasculature, and only the folding sheath with the small size is reserved in the puncture opening in the auxiliary blood pumping work process of the pump head, so that the puncture opening does not need to be kept in the large size in the whole work process of the catheter pump, healing of the puncture opening is facilitated, and the probability of complications of the puncture opening is reduced; meanwhile, the pain of a subject can be relieved.

Description

technical field [0001] The invention relates to an interventional component of a catheter pump, a method for using the interventional component and an interventional blood pump system, belonging to the technical field of medical devices. Background technique [0002] The catheter pump is adapted to be inserted in a desired location on the heart of a heart failure patient to assist the pumping function of the heart. From the perspective of relieving patients' pain and reducing puncture complications, it is hoped that the catheter pump can be inserted into the human body with a smaller size. [0003] One way to achieve the above desired is to use a collapsible catheter pump with two sheaths for the collapsible catheter pump. One is an interventional sheath, the front end enters the femoral artery through the puncture port opened in the human body, and the rear end is left outside the human body to form or establish a passage for the device to enter the blood vessel. The othe...

AI Technical Summary

Problems solved by technology

In this way, if the catheter pump is required to provide heart support for a long time (for example, 2 weeks), the interventional sheath with a large size kept in the puncture port of the human body will cause the expansion of the blood vessel to become larger, and it is easy to cause some puncture port complications

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