7 results about "Coronary Vein" patented technology

To provide a surgical method using a catheter that enables delivery of a drug to a human heart.SOLUTION: In a surgical method of delivering chemical liquid to a cardiac muscle cell, a catheter 1 having a lumen 1L, a side opening OP communicating the lumen 1L with the outside, and a radiopaque marker M indicating a position of the side opening OP is inserted to at least one of a coronary artery and a coronary vein, the catheter 1 is rotated while checking the marker M such that an orientation of the side opening becomes a predetermined orientation, a puncture needle 21 is made to project from the side opening OP in a state where the side opening OP is in the predetermined orientation, thereby, the puncture needle 21 is stuck to a cardiac muscle as a treatment target portion, and chemical liquid 50 containing a cell for treatment is injected to the cardiac muscle from the puncture needle 21.SELECTED DRAWING: Figure 1

The invention discloses a transjugular vein intervention type retrograde coronary sinus drug delivery catheter system, and relates to the technical field of catheters.The transjugular vein intervention type retrograde coronary sinus drug delivery catheter system comprises an injection base, a catheter and a balloon, the catheter comprises an air pipe and an infusion pipe which are integrally arranged, one end of the air pipe is connected to the injection base, the other end of the air pipe is connected with the balloon, and the balloon is used for blocking coronary sinus of the heart of a patient; the external end of the air tube can inject or extract air, one end of the infusion tube is connected to the injection base, the other end of the infusion tube is located in the heart of a patient, and the infusion tube penetrates through the balloon, is in sealed connection with the end of the balloon and is used for injecting liquid medicine or virus solution. The balloon can be used for blocking coronary sinus for a period of time to block venous circulation, and then the catheter is used for retrograde injection of awns or viruses into a coronary vein system, so that drugs directly act on myocardial tissues for a period of time, the local action time of the drugs is prolonged, the treatment efficiency is improved, systematic toxic and side effects are reduced, thoracotomy is not needed, and the treatment cost is reduced. The operation is more convenient.

This medical system is provided with: a drug solution containing cells and / or a low-molecular compound; and a puncture needle for injecting the drug solution into the myocardium via at least one of a human coronary artery and a coronary vein.

A surgical method for delivering a drug solution to myocardium includes the steps of: inserting a catheter into at least one of a coronary artery and a coronary vein, the catheter having a lumen, a lateral opening connecting the lumen and outside of the catheter, and a radiopaque marker indicating a position of the lateral opening; rotating the catheter while observing the marker such that an orientation of the lateral opening becomes a predetermined orientation with respect to a treatment target site; projecting a puncture needle through the lateral opening; piercing a myocardium of the treatment target site with the puncture needle; and injecting a drug solution containing therapeutic cells or chemical compounds from the puncture needle into the myocardium.

This utility model discloses a three-dimensional distal coronary vein mapping catheter, including a main mapping catheter and a secondary mapping catheter. The proximal end of the main mapping catheter is connected to an adjustable bending handle device, which includes a handle body, a turntable, and a pushing mechanism. The center extension line of the turntable is perpendicular to the axis of the main mapping catheter. The turntable is rotatably mounted on the handle body, and two bending wires are provided on the turntable and connected to the first mapping segment. The pushing mechanism is connected to the proximal end of the secondary mapping catheter. Compared with existing technologies, this method allows for the modeling of distal coronary veins, enabling more detailed detection of the patient's coronary vein information and facilitating rapid diagnosis. It achieves multiple functions with a single catheter, reducing the number of catheters required to enter the patient's body. Furthermore, the distal end of the main mapping catheter can be bent and deformed in two directions, facilitating access to the coronary sinus. This enhances surgical operability, reduces the burden on the patient, and saves surgical time.