摘要:
An integrated introducer and drive rod system used to position and attach a spiral-shaped, biological needle probe to a fetus during labor and delivery. The system ensures that the sharp, pointed, probe (typically, a fetal spiral electrode) remains protected in a retracted position inside the introducer until attachment to the fetal scalp is desired. The flexible drive rod of the system has a "C"-shaped safety ring with an outside diameter slightly less than the inner diameter of the introducer at a point on the introducer; a "C"-shaped radial web with an outside diameter only slightly larger than the inner diameter of the introducer creating an interference fit between the drive rod and the introducer; or a "C"-shaped segmented rib that engages the rear end of the introducer. The introducer has an inner diameter sized to create an interference fit with the drive rod; a forward interior wall with an inside diameter slightly less than the outside diameter of the safety ring; a ramp on the front end of the introducer; a longitudinal slot disposed along its entire length; or a combination of one or more of these structures. In combination, the structures of the drive rod and introducer resist but (upon exertion of a predetermined force on the handle of the drive rod) allow translation of the drive rod within the introducer.
摘要:
A dispensing port in a wall of a container 10 for dispensing perforated sheets. The dispensing port comprises three slots 62 generally extending radially from a central opening 61 of the dispensing port to form three flexible, triangular flaps 56, the apex 58 of each flap 56 being rounded. The flaps 56 apply tension to a leading sheet being pulled through the slots 62 to cause the leading sheet to be separated from the next sheet at the perforations while leaving a tip 75 of the next sheet projecting through the dispensing port.
摘要:
A cutting assembly of the type usable for severing a sheet into discrete elements includes an elongate track member having an elongate slot therein. A cutter slide is moveable in the slot and includes downwardly extending projections for both immobilizing and tensioning the sheet locally prior to, and during the severing operation. A method of forming the track, other articles having a segmented upper wall, by injection molding side sections and upper wall segments at an angle relative to the position they assume in the completed article, and thereafter rotating the side sections and upper wall segments about flexible, injection molded hinge sections to complete the formation of the article.
摘要:
A transducer-tipped intrauterine pressure catheter system for measuring, and delivering to an external monitor a signal representative of, the pressure in the uterus of a woman in labor. The system has a disposable catheter with an affixed asymmetric tip. A disposable, slotted, C-shaped introducer engages and positions the catheter. A reusable monitor cable has a second connector (which engages a first connector on the end of the catheter) on one end and a monitor connector (which engages the monitor) on its opposite end; the monitor cable transmits electrical signals from the first connector to the monitor. A test member is proximate the monitor connector on the monitor cable. The test member includes test circuitry assuring that the monitor cable, the second connector, and the monitor connector are operational. The test member also includes circuitry to "zero" the system. The system may also have a disposable luer fitting engaging the amnio lumen of the catheter and providing direct communication, through the amnio lumen, into the uterus. The luer fitting allows fluid samples to be withdrawn from, and fluids to be infused into, the uterus. An anti-bacterial coating may be bonded to the catheter, the tip affixed to the catheter, and the introducer.
摘要:
A hand writing device for assisting the young, old, and disabled to impart indicia onto a medium. The device includes an ergonomically designed and anthropomorphically shaped body having a top adapted to accommodate the palm of the hand, a planar bottom, and a reservoir containing a supply of writing fluid. A stylus is provided with a tip for depositing the writing fluid on the medium. A glide system is positioned on the bottom of the body and is adapted to provide low-friction movement of the device over the medium. The device pivots between a first position engaging the stylus with the medium and a second position disengaging the stylus from the medium. A head is coextensively connected to and extends outwardly from one end of the body and holds the stylus. The device allows the user to transfer writing motion between the hand and the stylus without having to grasp, grip, hold, or exercise finger control.