Preformed guide wire in cerebral angiography

Abstract

The invention discloses a preformed guide wire in cerebral angiography. The guide wire comprises a catheter and a guide wire body, the guide wire body comprises a metal inner core, a resin layer, a functional coating and a drug coating, the guide wire body is provided with a soft tip, a connecting tip axial rod middle section and a proximal push rod section, and the soft tip is a spiral tip. The preformed guide wire in the cerebral angiography can shorten the distance and the operation time of inserting the catheter and the guide wire body from a femoral artery in the past, in particular, change the direction of the guide wire body without passing a heart to reduce the burden on the heart of a patient, prevent damage to valves, complete a surgery in a short period of time, can reduce the radiation of a doctor and the patient, and be conducive to the early recovery of the patient.

Description

technical field [0001] The invention belongs to the technical field of medical devices and relates to a preformed guide wire in cerebral angiography. Background technique [0002] Cerebral angiography is a brand-new X-ray examination technology widely used in clinic since the 1990s. It first selects an access artery, usually the right femoral artery, and places an arterial sheath through the right femoral artery. Using different catheters, under the guidance of the guide wire, select the artery to be displayed, and inject iodine-containing contrast agent. Continuous filming of the blood vessel track passed by the contrast agent, and digital subtraction angiography (DSA) of cerebral blood vessels through electronic computer-aided imaging. [0003] In recent years, with the development of imaging technology and intracranial surgery, and some patients with poor blood vessels in the lower extremities and difficult access, catheters have begun to be inserted from the right radia...

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Problems solved by technology

[0003] In recent years, with the development of imaging technology and intracranial surgery, and some patients with poor blood vessels in the lower extremities and difficult access, catheters have begun to be inserted from the right radial artery for whole brain angiography and related intracranial surgery. The current guide wire It can only be inserted into the ascending aorta. Due to the structure of the aortic arch, the catheter is not easy to enter the descending aorta, and the guide wire does not have the function of entering the descending aorta. This way of turning the guide wire through the heart is easy to cause The damage of the aortic valve and the inner wall of the blood vessel, the contact force between the guide wire and the blood vessel cannot be accurately judged, which may easily affect the normal beating of the patient's heart, lead to complications such as ventricular injury, interfere with the electrophysiology of the heart, and increase the difficulty of forming the guide wire , has brought pain to the patient, and the long-term angiography operation will also bring a certain amount of radiation to both the doctor and the patient. If a guide wire can be formed directly from the aortic arch at the position of the descending aorta to lead directly to the cerebral artery without passing through the patient's heart, It will shorten the angiography time and reduce the pain of patients, which is also a major issue in angiography. Changing the structure of the catheter or guide wire is one of the ways to solve this problem.

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