Probe cover cassette with improved probe cover support
View Patent ↗A cassette of tympanic thermometer probe covers includes a frame and probe covers releasably attached to the frame. The probe covers can be individually attached over a probe of a tympanic thermometer to protect the probe from contamination. The probe covers are constructed to releasably secure themselves to the probe. The force required to secure the probe covers to the frame is less that the force which is required to detach the probe covers from the frame so that the probe cover is held by the frame while being attached to the thermometer probe. The probe cover is connected to the frame by frangible connections that are arranged to inhibit pivoting of the probe cover when being attached to the thermometer probe. A method of securing a probe cover to a probe of a tympanic thermometer is also disclosed.
1. A cassette comprising a frame and a plurality of tympanic thermometer probe covers, each of the probe covers being releasably attached to the frame by at least three frangible connections, said at least three frangible connections constructed to allow the respective probe cover to be detached from the frame upon application of a detachment force that breaks the frangible connections, the frangible connections being arranged to support the respective probe cover against pivoting relative to the frame when the probe cover is releasably attached to the frame.
2. A cassette as set forth in claim 1 , wherein said at least three frangible connections comprise at least three frangible stems connecting the respective probe cover to the frame at different locations.
3. A cassette as set forth in claim 2 , wherein the frangible stems are spaced apart from one another around a circumference of the respective probe cover.
4. A cassette as set forth in claim 1 , wherein the frame comprises a plurality of longitudinal supports supporting a plurality of probe covers arranged in a row, the frame further comprising at least one cross brace connecting the longitudinal supports between two of the probe covers.
5. A cassette as set forth in claim 1 , the probe covers being arranged in at least one row, the cassette comprising a plurality of stiffness enhancing supports, said plurality of supports including at least two longitudinal supports extending generally in the direction of said at least one row and at least one cross brace connecting the at least two longitudinal supports, said at least one cross brace being positioned between two of the releasably attached probe covers in said at least one row to resist deflection of the frame when the probe covers are detached from the frame.
6. A cassette as set forth in claim 5 , wherein the frame further comprises a web extending laterally from one of the longitudinal supports, the web, cross brace and longitudinal support intersecting at a location, each of the web, cross brace and longitudinal support being oriented in a different plane at said location.
7. A cassette as set forth in claim 6 , wherein each of the web, cross brace and longitudinal support are mutually orthogonal to one another at said location.
8. A cassette as set forth in claim 1 , wherein the frame comprises a side wall and a web projecting inwardly of the side wall, the web including at least one spur projecting generally between adjacent probe covers, at least one of the frangible connections extending from the spur to one of the adjacent probe covers.
9. A cassette as set forth in claim 1 , wherein the probe covers comprise tubular bodies having an opening at a proximal end thereof for receiving the probe of a tympanic thermometer and a film-covered infrared-transparent window at a distal end thereof for permitting radiation from a subject's tympanic membrane to pass through the window to the probe.
10. A cassette as set forth in claim 1 , wherein the frame comprises a cassette aligning system that facilitates bringing a substantially identical cassette into substantial alignment with and into a substantially similar orientation as the cassette when the cassette and said substantially identical cassette are being stacked on one another.
11. A cassette as set forth in claim 1 , wherein the cassette is configured for stacking with another substantially identical cassette in either of two different orientations, such that the probe covers of the cassette and said substantially identical cassette are nested with one another in either of said two orientations.