Balloon, balloon dilatation catheter and balloon preparation method
A technology for dilating catheters and balloons, which is applied in the direction of balloon catheters, etc., and can solve problems such as difficult to predict the actual position of the balloon, large outer diameter value, and difficult to pass through
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Embodiment 1
[0040] Embodiment 1: Preparation of 1.50mm*20.0mm (diameter of the straight part of the balloon * length of the straight part of the balloon) imaging balloon dilatation catheter
[0041] The blend ratio Pebax70D: (BiO) 2 CO 3 =70:30 The blended material is extruded through the extrusion equipment to an original pipe with a size of 0.0205inch*0.0105inch (OD*ID), where OD is the outer diameter of the original pipe, ID is the inner diameter of the original pipe, and the balloon is selected for molding The mold length is a straight mold of 21.5 mm, the original pipe is put into the balloon forming mold, one end of the original pipe is fed with 35 atm high-pressure nitrogen, and the other end is closed. Heat the original tubing to 70 degrees, apply a pulling force of 100N to both ends, stretch 15mm at both ends at a stretching speed of 120mm / s, and form a straight part of the balloon, then stretch 5mm at both ends to obtain a ball The constriction of the balloon and the balloon t...
Embodiment 2
[0043] Embodiment 2: Preparation of 5.00mm*15.0mm (diameter of the straight part of the balloon * length of the straight part of the balloon) imaging balloon dilatation catheter
[0044] Extrude the blended material with the blend ratio Pebax70D:BiOCL=60:40 through the extrusion equipment to extrude the original pipe with a size of 0.0615inch*0.0350inch (OD*ID), and select a straight mold with a length of 16.0mm for the balloon forming mold , put the original tubing into the balloon forming mold, one end of the original tubing is fed with 28atm high-pressure nitrogen, and the other end is closed. Heat the original tubing to 95 degrees, apply a pulling force of 150N at both ends, and stretch 12mm at both ends at a stretching speed of 160mm / s. After forming the main part of the balloon, stretch 4mm at both ends to obtain a balloon cone. Department and balloon tube segment. Finally, the balloon is heated to 126 degrees and shaped for 45 seconds under a pressure of 30atm, and the...
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