System for continuously injecting stem cells into minimally-invasive coronary artery blood vessel

Abstract

The invention discloses a system for continuously injecting stem cells into a minimally-invasive coronary artery blood vessel. The system comprises a casing pipe, a guiding needle and an infusion pipe. The system is characterized in that the guiding needle is inserted in the casing pipe through the casing pipe or inserted in the casing pipe through the rear end of the infusion pipe; the front end of the infusion pipe is connected with the rear end of the casing pipe; when the system is used, the system is arranged in a body; the rear end of the infusion pipe penetrates out of the body through the skin; a hard sheath canal is arranged on the outer side of the part in an infusion pipe body; the outer side of the rear portion of the casing pipe is provided with a casing pipe needle hole sealing structure used for sealing a casing pipe needle hole; when the guiding needle is inserted in through the casing pipe, the outer side of the rear portion of the casing pipe is further provided with a guiding needle hole sealing structure. The device is used for being retained in grafts after coronary artery bypass grafting to intermittently or continuously inject the stem cells into the grafts. The device is small in trauma, capable of injecting the stem cells or other therapeutic medicine into the grafts in vitro, easy and convenient to use and capable of being safely retained in the body when not used.

Description

technical field [0001] The invention belongs to a medical device for injecting stem cells in the body, in particular to a medical device for injecting stem cells or drugs into graft vessels after coronary artery bypass surgery, and specifically relates to a minimally invasive continuous injection of stem cells in coronary artery graft vessels system. Background technique [0002] Coronary artery bypass graft surgery is to take the patient's own blood vessels (such as the internal thoracic artery, the great saphenous vein of the lower limbs, etc.) or blood vessel substitutes, and connect the distal end of the narrowed coronary artery to the aorta, allowing blood to pass through the narrowed part. Reach the ischemic site, improve myocardial blood supply, and then achieve the purpose of relieving angina symptoms, improving heart function, improving the quality of life of patients and prolonging life. The procedure, called coronary artery bypass grafting, creates a clear path b...

AI Technical Summary

Problems solved by technology

The guide needle can guide the cannula into the graft vessel and place it in the graft vessel; the trocar sealing structure is used to seal the trocar hole on the graft vessel after the trocar is pulled out to prevent bleeding; the guide needle hole is closed The structure is used to close the guide needle hole after the guide needle is taken out to prevent bleeding; when the guide needle is inserted into the cannula through the back end of the infusion tube, the guide needle can be pulled out directly during use without considering the problem of blocking the guide needle hole; the infusion tube The cannula is connected and the rear end is set with the outside body, and stem cells or drugs can be infused from outside the body to the graft vessel continuously or intermittently through the infusion tube

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