| 摘要 |
Instead of placing the balloon on the outside of the catheter, as is usual, the balloon can also be laid like a stocking or tent around the front part of a guide wire, and for this it is best to use the elastic material of the balloon, e.g. latex. For inflation of the balloon the latter should be connected/bonded annularly at the back on the outer part of a disc fastened concentrically and transversely on the guide wire; this disc can simultaneously form a closure body of a frontal nozzle of the catheter. At the same time, lengthwise perforations for the supply of fluid to the balloon should be present medially in this disc. To supply the balloon the rear part of the single-lumen catheter should be closed. The advantages of an intermittent fluid for inflation of the balloon/frontal balloon are pointed out. The primary diameter of such frontal balloons on/around the front part of the guide wire is much smaller than that of the conventional balloons on the outside of the catheter, so that even very narrow stenoses to be extended can be passed by the frontal balloon on the guide wire in a better way than has hitherto been possible, for example in highly stenosing arteriosclerosis of the coronary arteries.
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