Abstract:
A network interface includes a receptacle configured to receive a plug, a first contact and a second contact each disposed in the receptacle, and a combination of a resistive element and a normally closed switch arranged in series with each other. The combination is coupled between the first contact and the second contact, and has a first configuration in which the switch is opened responsive to a presence of the plug within the receptacle, and a second configuration in which the switch is closed responsive to an absence of the plug from the receptacle.
Abstract:
A network interface includes a receptacle configured to receive a plug, a first contact and a second contact each disposed in the receptacle, and a combination of a resistive element and a normally closed switch arranged in series with each other. The combination is coupled between the first contact and the second contact, and has a first configuration in which the switch is opened responsive to a presence of the plug within the receptacle, and a second configuration in which the switch is closed responsive to an absence of the plug from the receptacle.
Abstract:
A spring-loaded, self-retaining, clamp like alignment device used to guide the placement of the acetabular component during total hip arthroplasty is disclosed. The device comprises two longitudinal elements: the first longitudinal element has a proximal end with a handle, a groove within and a spring loaded into the groove. The second longitudinal element has a distal end to which an acetabular component is attached and a mid-section that fits into the groove of the first longitudinal element and a proximal end with a knob. When the hook present at the distal end of the first longitudinal element is placed into the sciatic notch in the pelvic bone and the proximal end clipped to the mid-section of the second longitudinal element, the acetabular component at the distal end of the second longitudinal element is consistently positioned in the acetabulum at 45-degree abduction and 20-degree anteversion. While the surgeon impacts the acetabular component into place the spring located in the proximal end of the first longitudinal element maintains the proper alignment of the acetabular component and keeps the deep part of the clamp from injuring structures traversing the sciatic notch.