221results about How to "Prevent accidental contact" patented technology

An apparatus is described for use in combination with a noninvasive ophthalmological method for cornea reshaping in order to correct ocular refractive errors such as myopia (nearsightedness), hyperopia (farsightedness), and astigmatism. This apparatus is called a coupler and it is made of a material which is substantially transparent to the light energy used to reshape the cornea. The coupler conducts heat from the anterior portion of the cornea during the heating of the stroma by the light energy. The reshaping is enhanced by the coupler as it has a corneal engaging surface with a radius of curvature which approximates the desired emmetropic shape of the cornea. In addition to being a heat sink and template for the eye, the coupler also acts as a positioner and restrainer of the eye by attaching itself to the eye via an annular suction ring. Finally, the coupler also acts as a mask to prevent accidental exposure of the central optic zone to any light energy during the cornea reshaping procedure.

An ophthalmologic appliance being an ultrasound prob positioning immersion shell for use in ultrasonic measurement of axial length of the eye ophthalmology and other procedures. Support members in an upper chamber and a lower chamber each provides accommodating support along and about a central axis of the ultrasound probe positioning immersion shell and about vertically spaced regions of ultrasound probes to provide for perpendicular alignment of ultrasound probes to the corneal plane. Vents in the chamber structure allow for introduction of fluid medium and for the expelling of air from the chambers to inhibit bubble formation.

A medical device is provided for collecting fluid samples from a patient, such as blood samples. The device includes a needle having a forward sharpened tip that is retracted into the housing of the device after use to prevent exposure to the contaminated needle. The rearward end of the housing is open, forming a socket for receiving a fluid container, such as a vacuum tube, that will receive the fluid sample. A needle retainer releasably retains the needle in the extended position against the rearward bias of a biasing element. After use, the medical professional retracts the needle by pressing an actuation button, allowing the biasing element to displace the needle rearwardly. A guide track guides the needle during retraction, tilting the needle off-axis.

A connector (10) is configured for mounting to a panel (12). The panel (12) has a mounting aperture (18) formed with a keyway (22). The connector (10) has a housing (24) with a front end (26) dimensioned to pass through the mounting aperture (18). However, keys (44, 46, 48) project out in proximity to the front end (26) of the housing (24). At least one of the keys (48) is dimensioned to pass through the keyway (22). A stop flange (50) projects out from the housing (24) rearward of the keys (44, 46, 48). A resiliently deflectable locking finger (60) projects forward of the stop flange (50) and is dimensioned to engage in the keyway (22).

A plugging medium is used to block the bottom opening of cassettes for vertical electrophoresis in order to facilitate filling the cassettes with separation media. Cassettes can be filled within a vertical electrophoresis system in which electrophoresis is conducted without further manipulation of the cassettes. The system includes a frame assembly mounted on a base containing a basin for plugging solution. The cassette is mounted to the frame assembly in a substantially vertical position such that a bottom opening of the empty cassette resides below the rim of the basin. The plugging solution (e.g. agarose gel) forms a plug within the bottom of the cassette to contain the separation medium.

The invention describes a lighting system apparatus intended to increase safety during operation of mainly large or lengthy vehicles and combination vehicles in darkness and poor visibility. The lighting system is comprised of a single or plurality of light sources designed for vehicular use and housed in a durable thermally conductive material having a lens through which light is projected. Said light source housings are attached to the vehicle whereby, when actuated by a controller, sufficient illumination is directed onto the specific areas on the vehicle(s) and ground surface peripheral to said vehicle or combination of vehicles at one or more areas along the sides and rear or trailing portions to the extent that the driver can more safely control said vehicle(s) because of increased visual cognition of the aforementioned areas via the rear-view mirrors. Persons proximate are also more aware of said vehicle(s) position and pathway by means of said illumination and can more readily avoid dangerous contact.

An ocular positioning device threadably attached to a standard soft sided squeeze bottle of ophthalmic fluid. The device consists of two parts, an attaching mechanism and a sealing mechanism, connected by a hinge with motion limited to ninety degrees of arc. The sealing mechanism is fitted with a nose bridge saddle designed to rest on the bridge of the users nose and to align the discharge nozzle with the central portion of the ocular opening of either of the users eyes when the attaching hinge is in the fully open position. The sealing mechanism is also fitted with a manually operated latch to maintain the sealing mechanism in the closed and sealed condition to prevent leakage when not in use.

A cap is provided for a laboratory vessel. The cap includes a lid that can be rotated relative to the laboratory vessel from a closed position to an open position. The lid includes a shield for at least partly surrounding the open top of the laboratory vessel. Ribs are disposed on outer surfaces of the shield for receiving manual digital pressure for opening and/or closing the lid.