5 results about "Bypass surgery" patented technology

The invention discloses a proximal anastomosis auxiliary device in coronary artery bypass grafting, and relates to the technical field of medical instruments. Comprising a puncture needle, a puncture cannula and an annular compressor. The puncture needle is sleeved with the puncture cannula, and a bulged ball is arranged at the head end of the puncture cannula; the annular compressor is arranged outside the puncture cannula in a sleeving mode and can slide in the axial direction, a compression ring with a notch is arranged at the head end of the annular compressor, and the inner diameter of the compression ring is smaller than the outer diameter of the bulging ball. During puncture, the annular compressor is pressed down after puncture enters the aorta, and the compression ring and the bulging ball cooperate to clamp and close a puncture point to achieve blood-free operation; after the aorta wall in the compression ring is cut off, the bridge vessel is matched with the aorta, and the suture passes through the compression ring together; after suturing is completed, the annular compressor is rotated, the suture retreats from the notch, the suture is tightened and knotted after the whole device is withdrawn, and anastomosis is completed. The aorta forceps clip operation is avoided, the plaque falling risk is eliminated, anastomosis can be completed only through a single hole, operation is easy and convenient, hemostasis is reliable, and cost is low.

A powder formulation for preserving tissue and organ function, and more particularly to shelf stable powder formulations that can be reconstituted at point of use, including during a fat grafting process, coronary artery bypass graft surgery, and peripheral bypass surgery, or other grafting / transplant surgery prior to or during the medical procedure to preserve the tissues / organs used in these procedures. The powder formulation includes a reducing agent; an antioxidant; a sugar; a nitric oxide substrate; a buffering agent; and physically acceptable salt. Also provided are a method of preparing an organ or tissue preservation solution by reconstituting the powder formulation, and a method of preserving tissue or an organ using same.

The invention relates to the technical field of surgery planning, in particular to a minimally invasive bypass surgery planning method based on multi-modal image fusion, which comprises the following steps: acquiring heart dynamic parameters; generating a dynamic three-dimensional model; calculating a blockage risk score, and determining an initial anastomosis angle of the bridge blood vessel and the target blood vessel according to the blockage risk score; determining the fluctuation range of the matching angle; acquiring the variation range of the eddy current intensity value, judging whether the matching angle meets the requirement or not, and correcting the matching angle in response to the inconformity of the requirement; and determining the anastomosis position of the bridge blood vessel and outputting an operation planning scheme. According to the method, the blockage risk of the bridge blood vessel is quantified by combining the past medical history and blood routine parameters in the medical record of the patient to obtain the blockage risk score, the corresponding anastomosis angle is determined according to the blockage risk score, and the anastomosis angle is corrected according to the vortex intensity value; therefore, the accuracy of the minimally invasive surgery is improved, and the risk of blockage of the bridge blood vessel after the surgery is reduced.

The utility model relates to medical instrument technical field discloses heart bypass operation blood vessel fixing clamp, including the clamping plate, the inner wall sliding connection has rubber block in the clamping plate, the right side of clamping plate is provided with locking mechanism, locking mechanism is used for fixing clamping plate, avoids the loosening in clamping process, the front side of clamping plate is provided with replacement mechanism, replacement mechanism is used for replacement processing according to different size blood vessel, the locking mechanism includes the rack, the left end fixed connection in the inner wall left side of clamping plate of rack, the right side intercommunication of clamping plate has fixed box. In the utility model, through pressing clamping plate to blood vessel and clamping, at this time rubber block follows clamping plate and bends, simultaneously, the right end of rack passes through clamping plate and is connected in fixed box in sliding, through the pushing force of spring one under the top post, makes extrusion force act on rack, makes the close engagement of rack and tooth groove, realizes the locking processing of clamping plate.