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

(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.

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]
References in periodicals archive ?
Marrow infiltration was present in 42/83 cases (50.6%) in 20/42 cases (47.6%) in whom both aspirate and trephine biopsies were involved.
In 20/42 (47.6%) both marrow aspirate and marrow trephine biopsies were positive.
Outstanding sharp-edged fibers of the smooth silicon tissue are shown (arrows) caused eventually by use of a reusable trephine in this case.
Bone marrow trephines containing lymphoid aggregates from patients with rheumatoid and other autoimmune disorders frequently show clonal B-cell infiltrates.
(8) All specimens were formalin fixed and included the trephine and/or the clot biopsy specimens.
Some studies (1, 2, 3, 4) in the literature indicate that trephine biopsy is more sensitive and reliable than aspirate for detection of bone marrow metastasis.
Bone marrow trephine interpretation: diagnostic utility and potential pitfalls.
Effect of recipient-donor trephine size disparity on refractive error in keratoconus.
Bone marrow trephine, bone marrow aspirate, skin, spleen and/or liver samples were obtained from 26 patients.
The subject for this call for quote is the supply of long handle corneal trephines in quantity 80 of any of the mentioned sizes.
During this study, a 20mm diameter circular trephine was used, but smaller diameters such as 14 or 15mm may be used for the same purpose (PERKINS et al., 2009b).