| 摘要 |
An intra-oral measurement probe includes a hand-held unit having a body (210) with a tubular sleeve (222) extending from its front end. A removable probe tip (225) is within the sleeve and has a forward portion that protrudes past the front end (222A) of the sleeve, and is movable in the sleeve. A wire (233) has its front end coupled to the rear portion (238) of the probe tip, the wire extending rearwardly into the body. A spring (239) biases the probe tip and wire, with substantially constant pressure, against rearward movement with respect to the sleeve. A transducer (250) in the body is coupled to the wire and generates electronic measurement information representative of the position of the probe tip within the sleeve. A transmitter (272) responsive to the electronic measurement information for transmitting through-the-air signals representative of the electronic measurement information to a remote receiver and recorder. |
