Abstract: Embodiments of the present disclosure relate scheduling maintenance services for a special-purpose vehicle. In an exemplary embodiment, a user device comprises a user interface, a processor, and memory comprising instructions that when executed by the processor cause the processor to output, to the user interface, a plurality of service method icons. The plurality of service methods comprise a first service method icon corresponding to a service being performed on the special-purpose vehicle at a first location and a second service method icon corresponding to the service being performed on the special-purpose vehicle at a second location. The first location and the second location are different locations. The memory also comprises instructions that when executed by the processor cause the processor to receive, via the user interface, a selection of a service method icon of the plurality of service method icons and send, to a scheduling server, a signal corresponding to the selected service method icon.

Abstract: A method for extracting a tissue sample includes altering the pressure inside the lumen of a cannula to facilitate extraction of a tissue sample from the cannula. One aspect of the invention includes a biopsy apparatus comprising a valve for controlling the pressure inside the lumen of the cannula. In one variation, the pressure/vacuum generating device is connected to a cannula with a closed distal end and an orifice located on a circumferential surface of said cannula. A cutting sheath is slidably disposed over said cannula. The valve may be provided between the pressure/vacuum generating device and the cannula to control the pressure within the lumen of the cannula.

Abstract: A method for extracting a tissue sample includes altering the pressure inside the lumen of a cannula to facilitate extraction of a tissue sample from the cannula. One aspect of the invention includes a biopsy apparatus comprising a valve for controlling the pressure inside the lumen of the cannula. In one variation, the pressure/vacuum generating device is connected to a cannula with a closed distal end and an orifice located on a circumferential surface of said cannula. A cutting sheath is slidably disposed over said cannula. The valve may be provided between the pressure/vacuum generating device and the cannula to control the pressure within the lumen of the cannula.