Balloon having a multi-layer wall structure for the tissue-protective low-pressure sealing of operations and cavities in the body of a patient, in particular
A technology for filling pressure and balloon, applied in the direction of prosthesis, balloon catheter, drug device, etc., can solve the problem that the static model is not suitable for reflecting, the static model cannot record the periodic fluctuation of the tracheal cross-sectional area, etc.
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[0028] figure 1 An exemplary 2-layer structure according to the invention of a balloon wall 1 is shown in a schematic embodiment, wherein the outer material layer 2 facing the respective lumen or cavity consists of thermoplastic PUR (Elastollan 1100) with a Shore hardness of 90A , and have a wall thickness of 5 to 10 microns occupying a certain proportion. Preferably, the material layer 3 facing the lumen of the balloon 12 consists of PVC with a Shore hardness of 70A and has a wall thickness of 15 to 20 microns occupying a proportion. The two polymers are preferably produced in direct, planar connection, ie without an adhesion-promoting intermediate layer, by means of a coextrusion process, in fixed attachment to each other. The PVC layer with a thickness of 15 to 20 microns, on the one hand, inhibits the elastic straightening of a proportion of the PUR layer folded in an eyelet-like morphology in a manner that reduces the speed and extent of the straightening. On the other ...
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