Method and apparatus for laser welding incorporating galvanometer delivery
First Claim
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1. A method of laser welding to form a weld seam along a junction between metal coated polymer members suitable for use as part of an implantable medical device, comprising:
- defining a single weld path along the junction between the metal coated polymer members;
locating a plurality of initial welding locations spaced along the single weld path;
delivering a first sequence of pulses of laser beam energy, each pulse in the first sequence of pulses being directed to each of the plurality of initial welding locations to form a first sequence of a plurality of weld points of the metal coated polymer members at the plurality of initial welding locations; and
delivering successive sequences of pulses of laser beam energy, the pulses in each successive sequence of pulses each being directed to each of the plurality of weld points located along the single weld path an incremental distance from each of the existing weld points to form successive sequences of weld points of the metal coated polymer members, the sequences continuing until the weld points form a generally continuous weld seam of the metal coated polymer members along the single weld path.
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Abstract
Methods and systems for laser welding using a galvanometer to deliver laser energy in a multiple point sequence for high-speed and low-temperature welding of batteries, capacitors, medical devices, and related medical device components or the like.
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Citations
19 Claims
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1. A method of laser welding to form a weld seam along a junction between metal coated polymer members suitable for use as part of an implantable medical device, comprising:
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defining a single weld path along the junction between the metal coated polymer members; locating a plurality of initial welding locations spaced along the single weld path; delivering a first sequence of pulses of laser beam energy, each pulse in the first sequence of pulses being directed to each of the plurality of initial welding locations to form a first sequence of a plurality of weld points of the metal coated polymer members at the plurality of initial welding locations; and delivering successive sequences of pulses of laser beam energy, the pulses in each successive sequence of pulses each being directed to each of the plurality of weld points located along the single weld path an incremental distance from each of the existing weld points to form successive sequences of weld points of the metal coated polymer members, the sequences continuing until the weld points form a generally continuous weld seam of the metal coated polymer members along the single weld path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of laser welding to form a weld seam along a junction between metal coated polymer members suitable for use as part of an implantable medical device, comprising:
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defining a single weld path along the junction between the metal coated polymer members; locating at least two initial welding locations spaced apart along the single weld path; delivering a first sequence of pulses of laser beam energy, each pulse in the first sequence of pulses being directed to each of the at least two initial welding locations to form a first sequence of discreet weld points at the at least two initial welding locations; delivering a second sequence of pulses of laser beam energy, each pulse in the second sequence directed to each of the at least two weld points located along the single weld path an incremental distance from each of the at least two of the initial welding locations to form a second sequence of weld points, each of the weld points of the second sequence forming a continuous weld with one of the weld points of the first sequence of weld points; and delivering a next sequence of pulses of laser beam energy, each pulse in the next sequence directed to each of the at least two weld points located along the single weld path to form a next sequence of weld points, each of the weld points of the next sequence forming a continuous weld with one of the weld points of the first sequence and one of the weld points of the second sequence; and repeating delivery of next sequences of pulses of laser beam energy, each pulse of the repeated sequences forming a continuous weld with a weld point of a previous sequence until the weld points of each sequence form a continuous weld seam of the members between the initial weld locations. - View Dependent Claims (19)
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Specification