trephine
Circular surgical cutter
A trephine is a cylindrical surgical saw used to cut circular holes in bone, especially the skull.
The procedure, called trephination or trepanning, is one of the oldest known surgical operations—prehistoric skulls show evidence of it.
Modern trephines are used in cranial surgery and corneal transplants.
As a verb, to trephine is to operate with this instrument: The surgeon trephined the skull to relieve pressure.
Hole-boring device
- cannulaThin medical insertion tube
- perforatorDevice that makes holes
- handlePart for gripping
- crownSovereign's ornamental headpiece
serrated · blade · hand-crank · bit · cutting-edge · cylindrical · manual · motorized
Surgical skull removal procedure
- skullHead's bone casing
- neurosurgeryMedical field treating brain surgically
- duraOutermost meningeal membrane
- craniumSkull bone structure
scalp · incision · anesthesia · sterile · operating · surgeon · circular · perforation
Before documented civilization
- neolithicFinal Stone Age period
- ancientVery old indeed
- shamanismMediation between worlds
- ritualCeremonial set of actions
skulls · healing · tribal · anthropology · Hippocrates · medieval · primitive · burial
drill
Hole-boring device
- cannulaThin medical insertion tube
- perforatorDevice that makes holes
- handlePart for gripping
crown · serrated · blade · hand-crank · bit · cutting-edge · cylindrical · manual · motorized · burr
craniotomy
Surgical skull removal procedure
- skullHead's bone casing
- neurosurgeryMedical field treating brain surgically
- duraOutermost meningeal membrane
cranium · scalp · incision · anesthesia · sterile · operating · surgeon · circular · perforation · drilling
prehistoric
Before documented civilization
ritual · skulls · healing · tribal · anthropology · Hippocrates · medieval · primitive · burial · osteology
ophthalmology
Medical specialty for eyes
- corneaEye's clear outer dome
- transplantMove tissue between bodies
- graftIllicit political gain
donor · penetrating · lamellar · eye · punch · circular · tissue · diameter · vacuum · suction
- medical toolsstethoscope, otoscope, ophthalmoscope, catheter, reflex hammer
- medical instrumentsscalpel, forceps, needle, catheter, retractor
- old medicinebloodletting, leeches, leech therapy, leeching, cupping
- surgical proceduresincise, excise, suture, resect, dissect
- ancient surgeryamputation, cauterization, bloodletting, cautery, scalpel
- biopsy toolsbiopsy needle, punch biopsy
trephinebone graft
Transplanted skeletal tissue
suture · suture needle · stapler · patch · skin graft