header block
The connector assembly of a pulse generator where leads are inserted and secured with set screws.
Full Definition
The header block is the connector housing located on top of the pulse generator that provides electrical and mechanical connection points for cardiac leads. It contains receptacles designed to accept standard lead connectors (such as IS-1 or DF-1), along with set screws that secure the leads in place and ensure proper electrical contact. The header block is manufactured from biocompatible materials and includes sealing mechanisms to maintain the hermetic seal of the pulse generator. Modern header blocks may accommodate multiple leads and include features like torque-limiting set screws to prevent over-tightening.
Usage
Usage note: Often simply called 'header' in informal contexts, but 'header block' is preferred in technical documentation.
In Context
- "The header block showed signs of corrosion at the lead connection site." — Device explant analysis
- "Proper torque application to header block set screws ensures reliable lead connections." — Implant procedure manual