1. SYN: perforator. 2. To remove a disk of bone or other tissue by means of a t.. [contrived fr. L. tres fines, three ends]

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tre·phine 'trē-.fīn n a surgical instrument for cutting out circular sections (as of bone or corneal tissue)
tre·phine 'trē-.fīn, tri-' vt, tre·phined; tre·phin·ing to operate on with or extract by means of a trephine

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a surgical instrument used to remove a circular area of tissue, usually from the cornea of the eye (in the operation of penetrating keratoplasty) or from bone (for microscopical examination). It consists of a hollow tube with a serrated cutting edge. It is used during the preliminary stages of craniotomy.

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tre·phine (trə-fīnґ) (trə-fēnґ) [L. trephina] 1. a saw for removing a disk of bone, chiefly from the skull. 2. an instrument for removing a circular area of cornea, as in corneal transplant operations. 3. to operate upon with this instrument.

Medical dictionary. 2011.

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Look at other dictionaries:

  • Trephine — Tre*phine , v. t. [imp. & p. p. {Trephined}; p. pr. & vb. n. {Trephining}.] To perforate with a trephine; to trepan. [1913 Webster] …   The Collaborative International Dictionary of English

  • trephine — [trē fīn′, trēfēn′] n. [earlier trafine, form based on TREPAN1 < L tres,THREE + fines, ends] a type of small crown saw used in surgery to remove a circular section, as of bone from the skull vi. trephined, trephining to operate on with a… …   English World dictionary

  • Trephine — Tre*phine (?; 277), n. [A dim. of 1st trepan: cf. F. tr[ e]phine.] (Surg.) An instrument for trepanning, being an improvement on the trepan. It is a circular or cylindrical saw, with a handle like that of a gimlet, and a little sharp perforator… …   The Collaborative International Dictionary of English

  • Trephine — Trephine, so v.w. Handtrepan, s.u. Trepan …   Pierer's Universal-Lexikon

  • Trephine — Trephine, s. Trepanation …   Meyers Großes Konversations-Lexikon

  • Trephine — Trephīne (frz.), s. Trepanation …   Kleines Konversations-Lexikon

  • trephine — noun Etymology: French tréphine, from obsolete English trefine, trafine, from Latin tres fines three ends, from tres three + fines, plural of finis end more at three Date: 1628 a surgical instrument for cutting out circular sections (as of bone… …   New Collegiate Dictionary

  • Trephine — A trephine (IPA|/tfin/) is a surgical instrument with a cylindrical blade. It can be of one of several dimensions and designs depending on what it is going to be used for. They may be specially designed for obtaining a cylindrically shaped core… …   Wikipedia

  • trephine — trephination /tref euh nay sheuhn/, n. /tri fuyn , feen /, n., v., trephined, trephining. Surg. n. 1. a small circular saw with a center pin mounted on a strong hollow metal shaft to which is attached a transverse handle: used in surgery to… …   Universalium

  • trephine — 1. noun A surgical instrument used to remove a circular section of bone from the skull; a trepan. Syn: trepan 2 …   Wiktionary

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