Compound barb medical device and method
AssigneeCovidien LP
InventorsMatthew D. Cohen, Nicholas Maiorino, Timothy D. Kosa, Mark S. Buchter, Michael Primavera
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Abstract
A compound barb medical device is provided which includes an elongated body having at least one barb formed along the length of the body, the barb defining an inner surface with a first portion disposed at a first orientation relative to a longitudinal axis of the elongated body, and a second portion disposed at a second orientation relative to the longitudinal axis. Optionally, the barb defines a third portion disposed at a third orientation relative to the longitudinal axis. A method for forming a compound barb on a medical device is also provided.
Claims16
A method of forming a barbed suture comprising:
- contacting a first portion of an elongated body formed from at least one filament with a cutting element of a barb cutting apparatus;
- applying ultrasonic energy to the cutting element of the barb cutting apparatus to form a first barb on the elongated body, the first barb having a first cut disposed at a first orientation relative to a longitudinal axis of the elongated body and a second cut disposed at a second orientation relative to the longitudinal axis of the elongated body;
- moving the elongated body relative to the cutting element of the barb cutting apparatus a specified increment after forming the first barb;
- contacting a second portion of the elongated body with the cutting element of the barb cutting apparatus;
- and
- applying ultrasonic energy to the cutting element of the barb cutting apparatus to form a second barb on the elongated body, the second barb having a cut disposed at an angle relative to the longitudinal axis of the elongated body,
- wherein the first barb and the second barb extend outwardly from the elongated body in the same direction towards a first end of the elongated body to form a unidirectional barbed suture, and
- wherein the second barb is one of a plurality of single angle barbs extending from the elongated body and projecting towards the first end of the elongated body.
Dependencies are inferred from the claim text.