Abstract: A hemostasis valve includes a housing having a central bore therethrough, a compression tube positioned within the central bore, a soft annular elastomeric seal positioned within the central bore distal to the compression tube, and at least one actuator coupled to the housing. Movement of the actuator relative to the housing may move the compression tube towards or away from the annular elastomeric seal to increase adjust the inner diameter of the annular elastic seal. The large-bore hemostatic valves described herein may be particularly well suited for use with controllably adjusting the seal pressure around a medical device (e.g., catheter) inserted through the valve and may maintain a tight seal at high pressure and with large diameter medical devices.

Abstract: A distribution box for enclosing an electrical connection in an electrical wiring system includes a housing that is resistive to penetration by electromagnetic fields and a plurality of electrical conductors that form the electrical connection. A mirror plate is disposed within the housing and generates mirror currents to suppress electromagnetic fields generated by current flowing through the plurality of electrical conductors.