Abstract: A method for preparing an ultra-fine and uniform acrylamide-based polymer hydrogel filament. The method comprises: formulating a reaction solution of acrylamide-based polymer under ice bath conditions, and drawing the reaction solution into a reaction tube by a syringe; parabolically bending the two ends of the reaction tube upward; hanging the reaction tube for 2 h-8 h, and performing a baking reaction to obtain an acrylamide-based polymer hydrogel; vacuum drying the reaction tube for 4 h-8 h to obtain a dry filament of acrylamide-based polymer; cutting the reaction tube to obtain a plurality of short polymerization tubes having a preset length; pushing the dry filament of acrylamide-based polymer out of the short tube by a stainless steel wire; purifying same in a soaking solution to obtain an expanded filament of acrylamide-based polymer; and drying same to obtain a acrylamide-based polymer hydrogel filament having a preset external diameter.

Abstract: A conveying apparatus includes a conveying catheter. An insulation catheter over the conveying catheter, a conductive catheter over the outside of the insulation catheter, and a support spring connected to the conveying catheter; the support spring includes a second cathode connected to the conveying steel catheter via a conductive wire; the second cathode includes a second anode provided with a separation point, and connected to the conductive catheter through an anode conductive wire; the anode conductive wire and the cathode conductive wire run through the conveying catheter; the second anode, the anode conductive wire and the conductive catheter form a positive path connected to a positive electrode; the second cathode, the cathode conductive wire and the conveying catheter form a negative path, connected to a negative electrode; and the second anode and the second cathode conduct the positive path and the negative path through electrolyte in blood.

Abstract: A blood flow guide device conveying system comprises a blood flow guide device, a push guide wire, a support spring, a distal spring, a friction gasket, a distal marker, a proximal marker, and a complete release marker. The distal spring is provided at a distal end of the push guide wire. The distal marker is provided at a proximal end of the distal spring and configured to indicate a start state or completion state. The blood flow guide device is pre-mounted between the distal marker and the complete release marker. The friction gasket is provided on a distal end of the complete release marker. The proximal marker is provided on a distal end of the friction gasket. The friction gasket is used for stabilizing the blood flow guide device by pushing the push guide wire. The complete release marker is provided at a distal end of the support spring.