Low pressure high speed myocardium perforator

Abstract

The present invention relates to a low-temperature high-speed cardiac muscle punch which is characterized by comprising a casing, a motor, a fast chucking device and a drill bit. The inner cavity of the casing is provided with the motor, the output shaft of which is fixedly connected with the fast chucking device through a hollow shaft. The two ends of the casing are provided with a front end cover and a back end cover. The lower end of the casing is connected with a handle. The inner cavity of the handle is provided with a battery, the outer side of which is equipped with a switch. The present invention has the beneficial effects that the ventricular wall cardiac muscle is cut by the rotation of the sharp hollow drill bit to form a transmural tract with regular cutting edge, smooth tract wall and the good uniformity of each pore canal; based on the very high rotate speed of the punch, which is more than 5000 circles per minute, each pore canal can be finished within two to three seconds, the operation is simple, convenient and prompt without heat, and the surrounding does not have any thermal damnification, which can not cause the inactivation of the surrounding tissue and blood vessel active factors. The present invention meets each technical index requirement of the clinic, is light and durable and is convenient for disinfecting and safe for using. The casing is made from the integrated processing stainless steel which is antirust and antipollution and is convenient for washing by.

Description

technical field [0001] The invention belongs to medical instruments, in particular to a low-pressure, high-speed myocardial puncher for clinical operations. Background technique [0002] Based on the theory of perfusion of the direct channel of myocardial sinusoid, the US FDA approved laser myocardial perforation and revascularization in 1998 on the basis of a large number of animal experiments for the treatment of patients with coronary heart disease who are not suitable for intervention or bypass. This method can alleviate the symptoms of angina pectoris and improve the quality of life of patients; however, the improvement of blood supply at the perforation site has not been confirmed by objective evaluation methods such as myocardial perfusion imaging. Moreover, the transmural pores produced by the laser were full of granulocytes and thrombus 3 days after operation, accompanied by severe myocardial necrosis around; 16 days after operation, the pores in the pores were main...

AI Technical Summary

Problems solved by technology

different lasers such as CO 2 Neither Holmium:YAG nor Holmium:YAG can keep the pores open continuously, and both lumens were occluded by thrombus within 6 to 24 hours after operation. During the process, it will inevitably aggravate the damage of surrounding myocardium and the inactivation of pro-angiogenic protein factors, and lead to carbonized eschar and coagulation necrosis of the tissues around the tunnel

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