Trephine with transparent casing

There is disclosed a trephine apparatus having an outer casing with means defining a substantially cylindrical aperture having a substantially annular base, an inner, substantially cylindrical tube having a substantially annular base, the base of the inner tube being recessed from the base of the ou...

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Bibliographic Details
Main Author PHILIP DOUGLAS WESTON
Format Patent
LanguageEnglish
Published 12.09.2012
Subjects
BANDAGES, DRESSINGS OR ABSORBENT PADS
DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS
FILTERS IMPLANTABLE INTO BLOOD VESSELS
FIRST-AID KITS
FOMENTATION
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES
PROSTHESES
TREATMENT OR PROTECTION OF EYES OR EARS
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Summary:There is disclosed a trephine apparatus having an outer casing with means defining a substantially cylindrical aperture having a substantially annular base, an inner, substantially cylindrical tube having a substantially annular base, the base of the inner tube being recessed from the base of the outer casing within the aperture, and a substantially cylindrical trephine blade located inside the inner tube and configured such that the blade can be raised and lowered relative to the bases of the outer casing and the inner tube, wherein at least a base portion of the outer casing is made of a non-opaque material. This provides the advantage that the base of the inner tube and the blade can be viewed edge-on through the non-opaque material with a microscope without parallax between the blade and the base of the inner tube. This allows the zero position of the blade to be set easily and highly accurately in a manner not possible with existing vacuum trephine assemblies.
Bibliography:Application Number: GB20080021640