摘要:
A medical device such as a catheter, stent or balloon, is formed by depositing a radiation curable composition on a form (30) made of ice or wax. The deposited composition may be cured by irradiation, suitably with UV light. Complex structures can be built up if the deposition or curing is achieved imagewise. Compositions which photocure to polyester, polyamide or polyimide may be employed. A particular structure is a balloon for a rapid exchange catheter which has a guide wire lumen (85) passing through the balloon cone walls (86, 87).
摘要:
Verfahren zur Herstellung eines gekrümmten Schlauches, insbesondere eines Schlauches mit einem Elastomerwerkstoff, z. B. Kautschuk, wobei ein Schlauchrohling (10) unter Formgebung vulkanisiert wird, und wobei der Schlauchrohling mit einer gefrierfähigen Flüssigkeit (12) gefüllt wird, die Flüssigkeit durch Gefrieren verfestigt wird, der Schlauchrohling (10) mit der gefrorenen Flüssigkeit in eine entsprechende Form (1) gebracht wird und der Rohling anschließend in der Form (1) vulkanisiert wird.
摘要:
The invention relates to a compressed gas tank (1) which consists of carbon fiber materials and which has a filling and withdrawal connection. The invention also relates to a method for producing same, having the following steps: - providing a meltable core that forms an internal shape of the compressed gas tank (1), - wrapping the core with at least one carbon fiber bandage and impregnating the carbon fibers with a curable polymer matrix material, thereby providing a preform of the compressed gas tank (1), - consolidating the polymer matrix material of the preform and obtaining the carbon fiber composite compressed gas tank (1), and - liquefying the core material by means of a melting process and withdrawing the liquid core material out of the filling and removal connection.
摘要:
A medical device such as a catheter, stent or balloon, is formed by depositing a radiation curable composition on a form (30) made of ice or wax. The deposited composition may be cured by irradiation, suitably with UV light. Complex structures can be built up if the deposition or curing is achieved imagewise. Compositions which photocure to polyester, polyamide or polyimide may be employed. A particular structure is a balloon for a rapid exchange catheter which has a guide wire lumen (85) passing through the balloon cone walls (86, 87).
摘要:
This invention relates to the field of manufacturing hollow articles using a lost core process, using an aqueous solution of sodium acetate as lost core, in particular it relates to polymeric muffler applications.
摘要:
Verfahren zur Herstellung eines gekrümmten Schlauches, insbesondere eines Schlauches mit einem Elastomerwerkstoff, z. B. Kautschuk, wobei ein Schlauchrohling (10) unter Formgebung vulkanisiert wird, und wobei der Schlauchrohling mit einer gefrierfähigen Flüssigkeit (12) gefüllt wird, die Flüssigkeit durch Gefrieren verfestigt wird, der Schlauchrohling (10) mit der gefrorenen Flüssigkeit in eine entsprechende Form (1) gebracht wird und der Rohling anschließend in der Form (1) vulkanisiert wird.