Coronet Corneal Trephines

All CORONET trephines utilise the unique CORONET blade technology to create an ultra-sharp cutting edge of reliable and repeatable quality. The ultra-sharp, thin profile cutting edge minimises damage to the endothelial cells and reduces undercut and tissue distortion.
The comprehensive range of sizes are available in 0.25mm increments.

Recipient Vacuum Trephine

The CORONET Recipient Vacuum Trephine is ergonomically designed and
the length has been calculated to give easier access to the most recessed eyes.

The trephine is supplied in a comprehensive range of blade diameters and utilises
the unique CORONET blade technology to create an ultra-sharp cutting edge of
reliable and repeatable quality. View the product list.

Vacuum created holds trephine securely onto the surface of the cornea
Ergonomic design and length gives easier access to recessed eyes
Ultra-sharp thin profile blade minimises damage to endothelial cells and reduces undercut
Fine cross hairs assist with centralisation of the trephine
Non-reflective head
Blade progresses 0.063mm downward per quarter turn and 0.252mm per full rotation
Marker pin allows the operator to calculate the quarter and full turns through which the blade has progressed

The Recipient Vacuum Trephine instructions [download, 88Kb]

Donor Vacuum Punch

The CORONET Donor Vacuum Punch, like the Donor Punch, awards the surgeon with visualisation of the graft at all times during the procedure. The base provides a stable operating platform with the additional vacuum function (suction), which holds the corneal tissue securely and i the most relaxed and anatomically correct shape in preperation for the trephination of the donor button.

The CORONET Donor Vacuum Punch is supplied with a CORONET standard trephine plus a graft protector cover. Patent Protected. View the product list.

100% visualisation of the graft at all times.
Graft tissue may be manipulated through windows' to achieve optimal positioning
Vacuum holds the corneal tissue securely throughout the procedure and reduces the likelihood of bubble forming under the epithelial tissue.
Base provides a stable, safe operating platform, holding the tissue in a relaxed anatomically correct shape.
The ultra-sharp, thin profile trephine blade minimised damage to the endothelial cells and reduces undercut.
Marker holes in base assist when centering the tissue and reduces the likelihood of bubbles forming under the epithelial tissue.
Supplied one per box
Supplied sterile for single use only
Sterilisation by Ethylene Oxide (EO)
Declared 3 year shelf life

Donor Punch

The CORONET Donor Punch is supplied with a CORONET standard trephine which utilises the unique CORONET blade technology to create an ultra-sharp cutting edge of reliable and repeatable quality plus a graft protector cover to protect the graft from atmospheric dust particulate following trephination.
Patent Protected. View the product list.

The unique CORONET Donor Punch has been designed to award the surgeon with visualisation of the graft at all times during the procedure. The base provides a stable operating platform and holds the corneal tissue in the most relaxed anatomically correct shape in preparation for the trephination of the donor button.

100% visualisation of the graft at all times
Graft tissue may be manipulated through windows' to achieve optimal positioning
Base provides a stable, safe operating platform, holding the tissue in a relaxed anatomically correct shape.
The ultra-sharp, thin profile trephine blade minimised damage to the endothelial cells and reduces undercut.
Marker holes in base assist when centering the tissue and reduces the likelihood of bubbles forming under the epithelial tissue.
Graft protector cover protects the graft from atmospheric dust particulate.
Supplied one per box
Supplied sterile for single use only
Sterilisation by Ethylene Oxide (EO)
Declared 3 year shelf life

Artificial Anterior Chamber (A.A.C)

The CORONET Artificial Anterior Chamber has been designed to be used with any of the CORONET standard hand held trephines and is unique in concept in that one chamber fits all sizes of donor graft - ONE SIZE FITS ALL View the product list.
The Artificial Anterior Chamber allows the donor cornea material to be supported on a chamber of balanced salt solution, the pressure of which can be varied to recreate the required intraocular pressure. This permits the surgeon to cut the donor button from the epithelial surface, which directly mirrors the cut on the recipient cornea and so the donor button will have a similar wound architecture to that of the recipient. Cutting the donor button from the epithelial surface also reduces potential damage to delicate endothelial tissues and facilitates better approximation with the recipient cornea, which in turn reduces the likelihood of post-operative scarring and astigmatism.