Setscrew retention in connector block for implantable medical device
First Claim
1. A header assembly for coupling a medical electrical lead to an implantable medical device, the header assembly comprising:
- a connector block coupled to the header and having a first bore for receiving a proximal terminal pin of the medical electrical lead and a tapped bore transverse of, and in communication with, the first bore; and
a setscrew comprising mounting threads of a defined length;
the tapped bore having first and second tapped regions spaced by a smooth bore region which is longer than the defined length of the mounting threads.
1 Assignment
0 Petitions
Accused Products
Abstract
A header assembly for coupling a medical electrical lead to a medical stimulating device includes a header having a first bore for receiving a proximal terminal pin of the lead. A connector block coupled to the header has a second bore aligned with the first bore and a tapped bore transverse of, and in communication with, the second bore, and the assembly includes a setscrew with mounting threads of defined length threadedly engaged with the tapped bore. The tapped bore has first and second tapped regions spaced by a smooth bore region which is longer than the length of the threaded portion of the setscrew. As the setscrew is tightened, it has already been threaded through the first tapped region and resides within the smooth bore region, and then becomes threadedly engaged with the second tapped region such that the tip end becomes firmly engaged with the proximal terminal pin of the lead.
24 Citations
13 Claims
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1. A header assembly for coupling a medical electrical lead to an implantable medical device, the header assembly comprising:
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a connector block coupled to the header and having a first bore for receiving a proximal terminal pin of the medical electrical lead and a tapped bore transverse of, and in communication with, the first bore; and a setscrew comprising mounting threads of a defined length; the tapped bore having first and second tapped regions spaced by a smooth bore region which is longer than the defined length of the mounting threads. - View Dependent Claims (2, 3, 4, 5)
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6. A connector system for use with a sealed implantable medical device having a medical electrical lead receiving bore for slidably receiving a proximal terminal pin of an electrical lead, the lead receiving bore having an open end for receiving the proximal terminal pin and a closed end, the connector system comprising:
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a pulse generator operative to generate electrical stimuli; a sealed housing containing the pulse generator; a header having a first bore for receiving the proximal terminal pin of the medical electrical lead; a connector block coupled to the header and having a second bore aligned with the first bore and a tapped bore transverse of, and in communication with, the second bore; and a setscrew extending from a mounting shank at a head end to mounting threads of defined length adjacent a tip end; the tapped bore having first and second tapped regions spaced by a smooth bore region which is longer than the defined length of the mounting threads of the setscrew; and the setscrew being threadedly engaged with the tapped bore. - View Dependent Claims (7, 8, 9)
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10. In combination, a connector block and a lead-locking setscrew for use in a header of an implantable pulse generator, the header having a first bore for receiving a proximal terminal pin of a medical electrical lead, comprising:
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the connector block coupled to the header and having a second bore aligned with the first bore and a tapped bore transverse of, and in communication with, the second bore; a setscrew extending from a mounting shank at a head end to mounting threads of defined length adjacent a tip end; the tapped bore having first and second tapped regions spaced by a smooth bore region which is longer than the defined length of the mounting threads of the setscrew; and the setscrew being threadedly engaged with the tapped bore. - View Dependent Claims (11, 12, 13)
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Specification