Abstract: Compositions for CO2 detector solutions and rapid-response reversible dry surface CO2 detectors made from them are disclosed. The CO2 detector solutions generally comprise a poly(oxyethylene) based compound, a pH sensitive indicator dye, an organic solvent, a cationic phase transfer agent and an anionic base. However, minimally these detector solutions comprise a poly(oxyethylene) based compound, a pH sensitive indicating dye, an organic solvent and a base. The solutions were embedded onto a solid support made of polyethersulfone filter material in order to form rapid-response reversible dry surface CO2 detectors. Rapid-response reversible dry surface CO2 detectors are produced which function at rates in excess of 180 one-way color changes/minute when exposed to alternating 0% and 5% CO2 concentrations. A preferred embodiment using cationic methyltricaprylylammonium in conjunction with the phenoxide anion is substantially humidity resistant.

Abstract: The apparatus is connected by tubing to a patient. The apparatus has a manometer on one side in communication with an entrance port conveying ambient air to the patient. A spring loaded cap is depressed to block air inspired by the patient and cause such air to move a diaphragm in the manometer so that the inspired negative air pressure of the patient can be recorded. As soon as the cap is released a spring opens the entrance port to continue normal flow of ambient air to the patient.

Abstract: The apparatus is connected by tubing to a patient. The apparatus has a manometer on one side in communication with an entrance port conveying ambient air to the patient. A spring loaded cap is depressed to block air inspired by the patient and cause such air to move a diaphragm in the manometer so that the inspired negative air pressure of the patient can be recorded. As soon as the cap is released a spring opens the entrance port to continue normal flow of ambient air to the patient.

Abstract: A top and bottom housing joined together have a patient port and ventilation port in axial alignment. The top housing contains dry indicator paper for changing color in response to the presence of CO2. In addition, a shaft having a pointer on a top portion rotates in response to air in the housing to indicate pressure. A helical outer wall of the shaft engages a notch in a hollow stem attached to a membrane in the lower housing so the shaft rotates in response to air pressure on the membrane.

Abstract: The CO2 detector has a disc attached to a rim which in turn is attached to a third port on a esophageal detector housing. A baffle rises from an interior surface of the housing to slightly below an opening to the third port. A first and second port of the housing on each side of the third port are in axial alignment. The first port is attached to an elastomeric bulb and the second port is adapted to be connected to an adapter which in turn is attached to an intubation tube. A colorimetric indicator paper is shown through a clear plastic cover after removing backing on the indicator paper through the second port.

Abstract: The CO2 detector has a disc attached to a rim which in turn is attached to a third port on a esophageal detector housing. A baffle rises from an interior surface of the housing to slightly below an opening to the third port. A first and second port of the housing on each side of the third port are in axial alignment. The first port is attached to an elastomeric bulb and the second port is adapted to be connected to an adapter which in turn is attached to an intubation tube. A calorimetric indicator paper is shown through a clear plastic cover after removing backing on the indicator paper through the second port.

Abstract: The CO2 detector has a bottom housing attached to a top housing. The bottom housing contains a rotatable port engageable to an intubation tube and multiple parallel integral filter support ridges on a top surface of a floor. A filter pad overlies the integral filter support ridges and a baffle overlies the filter pad. The baffle has multiple parallel filter support ridges on a bottom surface cooperating with the filter support ridges integral with the bottom housing to maintain the filter pad in position. The baffle has an air flow guide on a top surface and air passages. The top housing has a port connected to a CPR bag and a clear plastic disc overlying a CO2 calorimetric indicator paper. The colorimetric indicator paper is shown through a clear plastic cover after removing backing on the indicator paper through a sealable slot.

Abstract: A pneumatic nebulizer that produces a high volume of aerosols for inhalent delivery of medications and other constituencies. High pressure gas formed into a gas jet is passed through a thin choked region of fluid that is entrailed and impinged upon an aerosol amplifier which creates a spray whose aerosol components are directed up through vents to an aerosol outlet for delivery. Larger-sized liquid particles are caused to pool up in a region surrounding the aerosol amplifer and then drip down back into the liquid medication reservoir.

Abstract: A light coupling assembly for use in providing light for illuminating an area of a patient's anatomy during the use of a medical instrument such as, for example, a laryngoscope is disclosed herein. The light coupling assembly includes a first light conveyance member having an input end for receiving light and an output end cooperating with the instrument in a way which illuminates the area with the light. A second light conveyance member includes an input end and an output end. The input end of the second member is positioned in optical communication with a source of light which also generates heat. A coupling arrangement is connected with the first and second members for positioning the input end of the first member in thermally isolated optical communication with the output end of the second member such that light from the first member is initially coupled to the second member in a way which prevents heat produced by the light source from damaging the first member.

Abstract: There is disclosed herein an endoscope system which includes an endoscope, specifically a laryngoscope, having a handle, a blade connected with the handle and means including an optical eyepiece through which an area immediately in front of the distal end of the blade may be viewed along the optical axis of the eyepiece. The system also utilizes an arrangement including a camera and monitor for displaying the area immediately in front of the blade when the camera is mounted to the eyepiece. A coupling member connectable to the camera is provided for mounting the camera to the eyepiece and locking means forming part of the coupling member and part of the eyepiece is provided for preventing the coupling member and therefore the camera from rotating in a plane normal to the optical axis of the eyepiece and for preventing the coupling member and therefore the camera from rocking in a plane parallel with the optical axis.

Abstract: A security device for securing a hinged door against forcible opening is disclosed. The apparatus includes an interior plate portion secured to an inner side of the door frame. The interior plate portion defines a first edge disposable in a gap between a latch edge of the door and a latch receiving portion of the door frame. When installed in a door apparatus, the security device prevents the door from being forcibly opened even if the latch receiving portion of the door frame is damaged or the door is bowed or bent inward. An alternative embodiment of the security device includes a latch plate reinforcing portion and a clamping portion in addition to the interior plate portion. A kit is disclosed that includes the interior plate portion and screws for attaching the interior plate portion to the door frame and for reinforcing the door hinge.

Abstract: A disposable manometer includes a chamber connectable to a source of CPR air pressure via a patient breathing valve and an elongated restricted passageway. The manometer includes a dial and a pointer rotatably disposed with respect to the dial to indicate the pressure sensed within a manometer chamber. The pointer has an actuator stem with a spiral-shaped protrusion coupled to a groove within an opening of a stem coupling attached at the center of a diaphragm forming one wall of the manometer chamber. Responsive to pressurized air entering the manometer chamber, the diaphragm reciprocates against the force of a biasing spring moving the stem coupling with respect to the actuator stem for the pointer so that the interaction between the spiral-shaped protrusion and the groove causes rotation of the pointer to indicate the pressure within the manometer chamber. The disposable manometer is intended to be used with a CPR bag or a patient breathing tube.

Abstract: The cardiac pulmonary resuscitator improved patient valve has a top and bottom portion joined together forming a cylindrical housing. A diaphragm is mounted between the housing top and bottom portions through which air passes to and from the patient. A rigid tubular port integral with the top portion has a first opening outside the housing and a second opening inside the top portion. A pair of stops on each side of the second opening prevents the diaphragm from blocking air into the rigid tubular port so that some air to and from the patient flows through the rigid tubular port to an air sampling device for making a reading.