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 ?
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.
The ease with which a marrow trephine biopsy can now be combined with aspiration, it is suggested that when a 'bone marrow examination' is requested, this can be utilized much more frequently.
Bone marrow trephine interpretation: diagnostic utility and potential pitfalls.
Bone marrow trephine, bone marrow aspirate, skin, spleen and/or liver samples were obtained from 26 patients.
Paraffin-embedded samples (2-5 microns) of bone marrow trephine, skin, spleen, or liver were sectioned and DNA was extracted with a 4-day, 56[degrees]C proteinase K digest, then isolated by the Magnesil[R] Genomic Fixed Tissue System (Promega) or the DNeasy Tissue Kit (Qiagen) according to the manufacturers' instructions.
Effect of recipient-donor trephine size disparity on refractive error in keratoconus.
Changes of axial length and keratometry after keratoplasty for keratoconus using the guided trephine system.
Bilateral trephine bone marrow biopsies in lymphoma and other neoplastic diseases.
Bilateral trephine bone marrow biopsy for staging non-Hodgkin's lymphoma: a second look.