Bioabsorbable metal medical device and method of manufacture
First Claim
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1. A method of processing a medical device formed from a bioabsorbable metallic material, comprising:
- generating a beam of radiation onto the bioabsorbable metallic material, the radiation beam creating a heat affected zone (HAZ);
providing a liquid;
reducing an oxygen concentration in the liquid to below about 0.5 mg/L; and
transmitting a fluid column of the liquid around the radiation beam onto the HAZ to thereby cool the HAZ and reduce a concentration of oxygen surrounding the HAZ, wherein the fluid column is parallel to the radiation beam.
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Abstract
A method and apparatus is provided for processing a medical device formed from a bioabsorbable metallic material. The method begins by generating a beam of radiation onto the bioabsorbable metallic material. The radiation beam is transmitted through a fluid medium and onto a heat affected zone (HAZ) of the bioabsorbable metallic material to thereby cool the HAZ and reduce a concentration of oxygen surrounding the HAZ.
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Citations
20 Claims
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1. A method of processing a medical device formed from a bioabsorbable metallic material, comprising:
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generating a beam of radiation onto the bioabsorbable metallic material, the radiation beam creating a heat affected zone (HAZ); providing a liquid; reducing an oxygen concentration in the liquid to below about 0.5 mg/L; and transmitting a fluid column of the liquid around the radiation beam onto the HAZ to thereby cool the HAZ and reduce a concentration of oxygen surrounding the HAZ, wherein the fluid column is parallel to the radiation beam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of processing a medical device formed from a bioabsorbable metallic material, comprising:
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generating a beam of radiation onto the bioabsorbable metallic material, the radiation beam creating a heat affected zone (HAZ); providing a liquid; dissolving a gas into the liquid to thereby reduce the oxygen concentration therein to below about 0.5 mg/L; and transmitting a fluid column of the liquid around the radiation beam onto the HAZ to thereby cool the HAZ and reduce a concentration of oxygen surrounding the HAZ, wherein the fluid column is parallel to the radiation beam. - View Dependent Claims (18, 19)
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20. A method of processing a medical device formed from a bioabsorbable metallic material, comprising:
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generating a beam of radiation onto the bioabsorbable metallic material, the radiation beam creating a heat affected zone (HAZ); providing a liquid, wherein the liquid is mineral oil, the liquid having an oxygen concentration below about 0.5 mg/L; and transmitting a fluid column of the liquid around the radiation beam onto the HAZ to thereby cool the HAZ and reduce a concentration of oxygen surrounding the HAZ, wherein the fluid column is parallel to the radiation beam.
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Specification