3 results about "Left coronary artery" patented technology

The invention discloses a construction method of an intermingled phlegm and blood stasis type myocardial infarction or cerebral infarction animal model, which comprises the following steps: selecting a healthy mouse, inducing an intermingled phlegm and blood stasis state by adopting a method of combining high-fat feeding with epinephrine hydrochloride subcutaneous injection, and feeding for 28 days; 1 mg / kg of epinephrine hydrochloride is subcutaneously injected every day on the 21th day, and the injection is continued for 7 days; establishing a myocardial infarction model by adopting a left coronary artery anterior descending branch ligation method, and establishing a cerebral infarction model by adopting a middle cerebral artery suture method; the invention further discloses an animal model of phlegm and blood stasis type myocardial infarction or cerebral infarction and application of the animal model to preparation of drugs for preventing or treating phlegm and blood stasis type myocardial infarction or cerebral infarction. According to the method, the phlegm-blood stasis type myocardial infarction or cerebral infarction animal model is successfully induced, the standard and objective judgment of the model state is realized by matching with an evaluation scale, the modeling method is simple, the repeatability is high, the evaluation system is scientific and reasonable, and the method has good research and application prospects.

The invention relates to the technical field of medical instruments, and discloses a left coronary artery angiography catheter and a using method thereof.The left coronary artery angiography catheter comprises an outer sheath tube, a fixing piece and a plurality of inner core tubes of different shapes; a first injection channel penetrating through the two ends of the outer sheath tube is arranged in the outer sheath tube, and one end of the outer sheath tube is connected with a fixing piece. A second injection channel is formed in the inner core tube, one end of the inner core tube is inserted into the first injection channel, the first injection channel is communicated with the second injection channel, the other end of the inner core tube is located outside the outer sheath tube, the part, located outside the outer sheath tube, of the inner core tube forms a connection section, and a gap is formed between the outer peripheral wall of the inner core tube and the inner peripheral wall of the first injection channel; the fixing piece is inserted into the gap, and the fixing piece is attached to the outer peripheral wall of the inner core pipe and the inner peripheral wall of the first injection channel; the outer sheath tube and any inner core tube are connected in an inserted mode to form the composite radiography tube. According to the left coronary artery radiography tube and the using method thereof, the complex left coronary artery can be rapidly connected, and the connection success rate of the complex left coronary artery is increased.

Provided is a retractor for aortic valve surgery which allows infusion of cardioplegic solution into a coronary artery while the retractor is in an attached state during aortic valve surgery. An aortic valve surgery retractor 100 is a retractor-type device used for aortic valve surgery, and includes: a retractor body 110 having a rectangular shape in a plan view and can be bent into a cylindrical shape in the longitudinal direction; and a first opening 120a and a second opening 120b provided at positions corresponding to an inlet part of the right coronary artery and an inlet part of the left coronary artery in the retractor body 110 for injecting a cardioplegic solution into the right coronary artery and the left coronary artery, respectively.