Femoral artery shunt infusion tube

Abstract

The invention discloses a femoral artery shunt infusion tube. The femoral artery shunt infusion tube comprises a intubation body and an expander. An inner thread column is fixedly mounted on the both side walls of an inner thread sleeve by connecting the intubation body with the inner thread sleeve in a thread mode for fixing the intubation body, so that the intubation body is not easy to pull away the femoral artery, the right end of the intubation body is connected with a stopper plate and an outer thread sleeve in a thread mode, the outer thread sleeve is connected with a sealing ring in a thread mode, the outer thread sleeve is used for facilitating better connection with a main pipeline of femoral artery circulation, the sealing ring plays a better seal role to prevent leakage. The structure of the femoral artery shunt infusion tube is used for provide blood shunt perfusion for distal non-perfusion ischemia area of the femoral artery during cardiopulmonary bypass surgery and extra-membranous lung advanced life support to prevent ischemia.

Description

technical field [0001] The invention relates to the related technical field of medical equipment, in particular to a femoral artery shunt perfusion tube. Background technique [0002] In the existing art of cardiac and great vessel surgery, catheterization of peripheral arteries (such as femoral artery) is the most common surgical technique used in minimally invasive cardiac surgery, great vessel surgery, and advanced life support systems such as extracorporeal membrane lung (ECMO). Femoral artery catheterization In order to ensure sufficient and satisfactory systemic perfusion flow, the diameter of the cannula is often larger. When the larger femoral artery perfusion catheter is inserted into the smaller femoral artery, especially when the above two catheters have the same diameter or the femoral artery When spasm occurs, the perfusion tube inserted into the artery often obstructs the blood supply to the distal extremity, or even completely blocks the blood flow, leading to...

AI Technical Summary

Problems solved by technology

A Chinese patent discloses a bidirectional perfusion arterial cannula for extracorporeal circulation (201620728924.8). The distal end of the arterial cannula body of this invention is a blind end, and holes are opened on both sides of the head to achieve the purpose of bidirectional perfusion of the systemic circulation. , the head of the cannula is implanted vertically into the lumen of the femoral artery, but the femoral artery itself is relatively small, and the inserted part is less likely to escape from the blood vessel. In clinical practice, in order to ensure that the arterial perfusion tube is not easy to prolapse under high pressure, it is often necessary to implant 5 to 10 cm; in addition The wall of the tube is relatively flexible. After the cannula is fixed, the cannula cannot be in the ideal position. After a slight change in the position, the purpose of bidirectional perfusion cannot be achieved, and even the perfusion of the systemic circulation is affected, which is life-threatening in severe cases.

Another patent, Axillary Artery Cannulation and Application in Non-Perfused Ischemic Areas During Extracorporeal Circulation (201410522552.9), the overall structure of the arterial cannula in this invention presents a "T" or "Y" shape, and the operation requires a longitudinal incision of the arterial tube The wall needs to be incised at least 3cm or longer before the intubation can be placed. After the incision, the incision must be sutured again before the intubation can be fixed. During the operation, longer blood vessels need to be freed, which increases trauma and operation time; When the tube is inserted, the incision needs to be opened again, the proximal end of the blood vessel is blocked, and the arterial incision is sutured. The re-operation trauma is large and the operation is inconvenient; long-distance longitudinal incision of the artery may cause vascular stenosis in the long run

Images