trephine

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trephine

 [trĕ-f€īn´, trĕ-fēn´]
1. a saw for removing a disk of bone, chiefly from the skull.
Trephine. From Dorland's, 2000.
2. an instrument for removing a circular area of cornea.
3. to remove with this instrument.

tre·phine

(trē-fīn', -fēn'),
1. Synonym(s): perforator
2. To remove a disc of bone or other tissue by means of a trephine.
[contrived fr. L. tres fines, three ends]

trephine

/tre·phine/ (trah-fīn´) (trah-fēn´)
1. a crown saw for removing a disk of bone, chiefly from the skull.
2. an instrument for removing a circular area of cornea.
3. to remove with a trephine.

trephine

(trĭ-fīn′)
n.
A surgical instrument with a cylindrical saw usually used for removing a disk of bone, especially from the skull, or for removing corneal tissue.
tr.v. tre·phined, tre·phining, tre·phines
To operate on with a trephine.

treph′i·na′tion (trĕf′ə-nā′shən) n.

trephine

[trifīn′, trifēn′]
Etymology: Gk, trypan, to bore
a circular sawlike instrument used in removing pieces of bone or tissue, usually from the skull. Also called trepan.

tre·phine

, trepan (trē-fīn', trĕ-pan')
1. A cylindric or crown saw used for the removal of a disc of bone, especially from the skull, or of other firm tissue as that of the cornea.
2. To remove a disc of bone or other tissue by means of a trephine.
[contrived fr. L. tres fines, three ends]

trephine

A hollow, cylindrical cutting instrument with the edge at one end sharpened or saw-toothed, used to cut a circular hole in bone or other tissue by pressure and rotation.

Trephine

A small surgical instrument that is rotated to cut a circular incision.

tre·phine

, trepan (trē-fīn', trĕ-pan')
1. A cylindric or crown saw used for the removal of a disc of bone, especially from the skull, or of other firm tissue.
2. To remove a disc of bone or other tissue by means of a trephine.
[contrived fr. L. tres fines, three ends]

trephine (trefēn´),

n a circle-cutting surgical instrument designed to remove a circumscribed portion of tissue. It permits the insertion of the heads of intramucosal inserts into the tissue.
Treponema
n a genus of schizomycetes composed of parasitic and pathogenic spiral microorganisms.
Treponema microdentium,
n a species found in the normal oral cavity.
Treponema mucosum,
n a species found in periodontal infections in man.
Treponema pallidum,
n the spirochete that causes syphilis in humans.
Treponema vincentii,
n a spirochete associated with acute necrotizing ulcerative gingivitis.

trephine

1. a crown saw for removing a circular disk of bone, chiefly from the skull. See also galt trephine, michel's trephine, searcy trephine.
2. an instrument for removing a circular area of cornea, e.g. Castroviejo trephine.
3. to remove with a trephine.
References in periodicals archive ?
A study reported a syndrome characterised by persistent headache, dizziness, fatiguebility, cognitive and functional decline, irritability, epilepsy and psychiatric symptoms observed in patients with large cranial defects which they named as syndrome of the trephined.
Hence, early cranioplasty with autologous bone flap preserved in the abdominal pouch improved rehabilitation without exposing the patients to late complications like syndrome of the trephined, and relatively low morbidity.
Effect of cranioplasty on cerebrospinal fluid hydrodynamics in patients with syndrome of the trephined.
Following the incision, the skull was trephined and electrodes were implanted bilaterally in the anterior nucleus of the hypothalamus.