Arrangement for fixing one or more electrode leads in an implantable medical device, such as a heart stimulator
First Claim
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1. An arrangement for fixedly holding at least one electrode lead, having an insulating casing, comprising:
- a connector unit of an implantable medical device with an insertion hole having a longitudinal axis;
said connector unit having a slot therein, accessible from an exterior of said connector unit, disposed in a plane substantially normal to said longitudinal axis of said insertion hole; and
a resilient locking member insertable into said slot having two opposed side branches spaced from each other, said locking member, when inserted into said slot, comprising means for straddling and initially spreading apart over, and subsequently resiliently snapping over, said insulating casing of said electrode lead for non-invasively clamping directly against diametrically opposite portions of an exterior of said insulating casing of said electrode lead for holding said electrode lead in said connector unit.
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Abstract
An appliance for fastening one or more electrode leads in a connector unit of an implantable medical device, for example a heart stimulator, is formed of a wire- or strip-shaped resilient locking member, which is arranged to be inserted and fixed in a cavity in a connector unit, and which is shaped to clampingly engage diametrically opposed circumferential parts of the casing of each electrode lead.
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Citations
33 Claims
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1. An arrangement for fixedly holding at least one electrode lead, having an insulating casing, comprising:
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a connector unit of an implantable medical device with an insertion hole having a longitudinal axis; said connector unit having a slot therein, accessible from an exterior of said connector unit, disposed in a plane substantially normal to said longitudinal axis of said insertion hole; and a resilient locking member insertable into said slot having two opposed side branches spaced from each other, said locking member, when inserted into said slot, comprising means for straddling and initially spreading apart over, and subsequently resiliently snapping over, said insulating casing of said electrode lead for non-invasively clamping directly against diametrically opposite portions of an exterior of said insulating casing of said electrode lead for holding said electrode lead in said connector unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An arrangement for fixing two electrode leads in a connector unit of an implantable medical device, said connector unit having two insertion holes, each having a longitudinal axis, for respectively receiving said two electrode leads, said arrangement comprising:
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said connector unit having a recess therein; an S-shaped elongated resilient locking member having two arcuate portions facing in opposite directions joined by a central web portion; and means for rotatably mounting said locking member at said web portion in said recess in said connector unit for permitting rotation of said locking member around a transverse axis extending substantially parallel to the longitudinal axes of the respective insertion holes from a passive position wherein said arcuate portions are free of electrode leads in said insertion holes to a clamping position wherein said arcuate portions respectively partially surround said electrode leads. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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25. An arrangement for fixing an electrode lead in a connector unit of an implantable medical device, said connector unit having an insertion hole, having a longitudinal axis, for receiving said electrode lead, said arrangement comprising:
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a cavity in said connector unit; an elongated resilient locking member having an arcuate portion shaped for clampingly engaging diametrically opposite portions of said electrode lead; and means for mounting said locking member for rotation in said cavity of said connector unit around an axis extending substantially parallel to said longitudinal axis of said insertion hole for permitting said locking member to move from a passive position, wherein said locking member is free of said electrode lead, to a locking position wherein said arcuate portion clampingly engages diametrically opposite portions of said electrode lead. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33)
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Specification