Medical electrical lead having controlled texture surface and method of making same
First Claim
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1. A method of texturing an external surface of an elongate elastomeric substrate for a medical lead, comprising:
- stretching the elongate elastomeric substrate to yield a prestretched elongate elastomeric substrate;
continuously moving the prestretched elongate elastomeric substrate through a plasma deposition chamber; and
depositing at least one reactant monomer on at least one external surface of the prestretched elongate elastomeric substrate to form texture said external surface as the prestretched elongate elastomeric substrate moves through the plasma deposition chamber.
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Abstract
An elongate elastomeric structure having controlled surface texture. Plasma deposition is used to create controlled features, such as ridges, on the external surface of an elongate elastomeric surface, such as the external surface of silicone tubing. The invention has particular applicability in the medical device field, such as the fabrication of implantable leads, catheters, and medical devices incorporating them.
87 Citations
29 Claims
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1. A method of texturing an external surface of an elongate elastomeric substrate for a medical lead, comprising:
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stretching the elongate elastomeric substrate to yield a prestretched elongate elastomeric substrate;
continuously moving the prestretched elongate elastomeric substrate through a plasma deposition chamber; and
depositing at least one reactant monomer on at least one external surface of the prestretched elongate elastomeric substrate to form texture said external surface as the prestretched elongate elastomeric substrate moves through the plasma deposition chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of making an elongate elastomeric structure for a medical lead, the elongate textured structure comprising a textured external surface, comprising:
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stretching the elongate elastomeric structure to yield a prestretched elongate elastomeric structure;
continuously moving the prestretched elongate elastomeric structure through a plasma deposition chamber; and
depositing at least one reactant monomer on at least one external surface of the prestretched elongate elastomeric structure to form texture said external surface as the prestretched elongate elastomeric structure moves through the plasma deposition chamber to yield an elongate elastomeric structure comprising a textured external surface. - View Dependent Claims (13, 14, 19, 20, 21, 22, 23)
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15. A method of texturing an external surface of an elastomeric substrate for a medical lead, comprising:
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stretching the elastomeric substrate to yield a prestretched elastomeric substrate; and
depositing at least one reactant monomer on at least one external surface of the prestretched elastomeric substrate to form texture said external surface. - View Dependent Claims (16, 17, 18)
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24. A method for making at least one of a medical lead and a medical catheter, comprising:
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stretching elastomeric tubing comprising at least one lumen to yield prestretched elastomeric tubing;
continuously moving the prestretched elastomeric tubing through a plasma deposition chamber; and
depositing at least one reactant monomer to form texture on at least one external surface of the tensioned elastomeric tubing as the tubing moves through the plasma deposition chamber, to yield elastomeric tubing having at least one textured external surface;
fabricating the lead or catheter from said elastomeric tubing having the textured external surface. - View Dependent Claims (25, 26, 27)
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28. A method of making at least one of a medical lead and a medical catheter, the lead and catheter having improved slip characteristics, comprising:
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stretching silicone tubing comprising at least one lumen to yield prestretched silicone tubing;
continuously moving the prestretched silicone tubing through a plasma deposition chamber; and
depositing at least one reactant monomer to form texture on at least one external surface of the prestretched silicone tubing as the tubing moves through the plasma deposition chamber, to yield silicone tubing having at least one textured external surface;
fabricating the lead or catheter from said silicone tubing having the textured external surface. - View Dependent Claims (29)
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Specification