Abstract: Instruments for use in endoscopic carpal tunnel surgery include a cannula having a diameter suitable for passage in the carpal tunnel, a diametrically narrowing open tip to facilitate entry into the carpal tunnel and a matted interior surface to maximize visual clarity of the carpal tunnel display, an obturator having a diameter suitable for passage in the cannula end, a plow shaped tip which laterally shifts tendons and nerves from its path as the tip is passed in the carpal tunnel and a sway-back portion proximate the tip which maximizes the efficiency of the tip as it plows through the carpal tunnel tendons and nerves and a rasp having a rod of diameter suitable for passage in the cannula, a roughened face on an upwardly tapering trapezoidal cross-section tip for guiding penetration of the tip through the longitudinal slot in the cannula but limiting penetration of the tip therethrough, and a bend in the rod so that the roughened face of the tip is in substantially flush alignment with the ligaments when t

Abstract: Instruments for use in endoscopic carpal tunnel surgery include a cannula having a diameter suitable for passage in the carpal tunnel, a diametrically narrowing open tip to facilitate entry into the carpal tunnel and a matted interior surface to maximize visual clarity of the carpal tunnel display, an obturator having a diameter suitable for passage in the cannula end, a plow shaped tip which laterally shifts tendons and nerves from its path as the tip is passed in the carpal tunnel and a sway-back portion proximate the tip which maximizes the efficiency of the tip as it plows through the carpal tunnel tendons and nerves and a rasp having a rod of diameter suitable for passage in the cannula, a roughened face on an upwardly tapering trapezoidal cross-section tip for guiding penetration of the tip through the longitudinal slot in the cannula but limiting penetration of the tip therethrough, and a bend in the rod so that the roughened face of the tip is in substantially flush alignment with the ligaments when t

Abstract: The template of this invention includes a flexible sheet with indicia thereon to identify the proper sites and instruction of the proper technique of insertion of an injection device, such as a needle, for medical injection into the human knee. The sheet is flexible so that it may be folded for storage and shipment and then unfolded for placement over the human leg. The template is universal in that it may be used on either the left or right leg on either a male or female patient and may be used on human legs of many different sizes.

Abstract: The template of this invention includes a flexible sheet with indicia thereon to identify the proper sites and instruction of the proper method of insertion of a cannulated needle to drain a distended human knee bursa, A cannulated needle is used for draining the bursa which includes a rigid needle and a flexible cannula through which the rigid needle is inserted to be attached to a hypodermic syringe. The cannula has a plurality of apertures on its leading end which facilitate drainage by reducing the chance of clogging or blocking of the opening of the cannula.