GLOBENEWS

VOLUME 8 NUMBER 1

katena

FOR OPHTHALMIC PROFESSIONALS

Finally...Delicate Muscle Instruments

At the 1997 ASCRS Congress in Boston, Dr. Takayuki Akahoshi ofTokyo, Japan, presented his award winning video of the Akahoshi PhacoPreChop Technique. His new technique, which eliminates sculpting of thenucleus and reduces ultrasound time, was met with much enthusiasm. Thissingle-handed technique requires the use of a cross-action cracking forceps withsharp tips which is inserted directly into the core of the nucleus. Cracking isaccomplished by squeezing the forceps handle and activating the cross-actionjaws for dividing the nucleus. The jaws are then used to rotate the nucleussegments prior to additional prechopping. According to

PreChopper Eliminates Sculpting

K5-7230 Akahoshi Phaco PreChopper

While surgical techniqueshave advanced with theuse of magnification,

instruments for strabismus surgeryhave remained virtually unchangedduring the last 30 years. Dr. EugeneM. Helveston of Indianapolis,Indiana, has designed a new genera-tion of delicate instruments forstrabismus surgery which enablesurgeons to work more precisely,with less trauma and better results.

This new generation of instruments,from the brand new “Barbie” tissueretractor, to the set of extra delicatemuscle hooks and the multi-purpose“Teaser” hook, are substantially more

delicate than anyother strabismusinstruments cur-rently available.

The set includesthree sizes ofH e l v e s t o nmuscle hooks

which are dramatically more delicate,for instance, than the popularJameson muscle hooks. Their

uniquely shaped spatulated tipspermit easy insertion under themuscle with positive retention, yetcan easily be extracted.

The blunt ”Teaser” hook is used to

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more delicatemediumHelveston hook

standard Jameson hook

HELVESTONINSTRUMENT SET for STRABISMUS

SURGERY lift, pull, and manipulate tissue inconjunction with the Helvestonmuscle hooks. It gets its namebecause it helps to “tease” a musclehook through the tissue.

The “Finder” hook, with its lightlyangled cone shaped tip, is used forprobing and locating scar tissue fromprevious surgeries, thus the name“Finder” hook.

One of the most unique instrumentsin the Helveston set is the “Barbie”tissue retractor. With

• More Delicate• Less Trauma• Better Results

New

Brierley Capsulorrhexis Cannula

its broad thin blade, it is designed to retract conjunctivaltissue and maximize exposure of the sclera for marking andplacing the sutures. The instrument was named by Dr.Helveston’s nurse because it reminded her of a “hamburgerflipper” for a “Barbie” doll.

For many years the Paton tying forceps has been a standard formuscle surgery, however, with the use of finer sutures, the need

for a more delicate forceps became evident. With this in mind, Dr. Helvestondesigned a new tying forceps with substantially finer jaws to handle 6-0 sutures.

To eliminate the placement of a traction suture, Dr. Helveston advocates the useof two curved Moody fixation forceps, with lock, to retract and stabilize the eye.

Detailed literature and a free video by Dr. Helveston are available upon request.

Dr. Akahoshi, his Phaco PreChoptechnique markedly reduces ultra-sound time, as compared withconventional grooving techniques.

Working with Dr. Akahoshi, Katenahas developed an improved model ofthe Akahoshi Phaco PreChopper with jaws that maximize surfacecontact, especially important for

Helveston Instrument Set Continued from Page 1

Helveston “Finder” Hook with lightly angled cone shaped tip

K3-6761 small K3-6760 large

Helveston Multi-purpose ”Teaser” HookK3-6610 6mm long

Helveston Muscle Hookextra delicate with blunt spatulated tipK3-6778 8mm K3-6780 10mm

K3-6782 12mm

Helveston ”Barbie” Tissue Retractor thin curved blade 7mm wide

K1-9010

Helveston Tying ForcepsK5-5420

Moody Fixation Forceps with lockK5-2553 curved left K5-2554 curved right

K7-4595 Brierley Capsulorrhexis Cannula

Phaco PreChop TechniqueContinued from Page 1

Dr. Brierley designed this newcannula for performing his techniqueof “vacuum capsulorrhexis” througha sideport incision. This angledcannula features a 21 gauge ovalshank which serves to seal theparacentesis while performing the

Designed by Dr. Lawrence Brierley ofVictoria, B.C., Canada, this instrumentfeatures an oval shaped titanium tipwith three single direction fins on the

anterior and posterior surfaces. Wheninserted, the fins securely engage thecorneal stroma preventing the tipfrom becoming inadvertently dis-lodged. For withdrawal, the surgeonsimply twists the oval tip 90˚ so thatthe fins no longer engage the cornealstroma. The tip is flared behind thefins to seal the incision and limit itsadvance into the anterior chamber.The combination of these featuresprovides the surgeon excellent globepressurization with minimal woundleakage.

Titanium Chamber Maintainer with

“Positive Grip Tip”

cracking soft nuclei. It features thin,higher profile jaws with pointed tipswhich easily penetrate the nucleus. Itsjaws are smoothly polished tominimize friction. The cross-actionmechanism allows the jaws to fullyopen for cracking without stretchinga small incision. The shanks of theforceps are gently angled and vaultedto accommodate a clear cornea orscleral tunnel approach.

K7-6715 Brierley Chamber Maintainer 20 gauge

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Somerset Maugham

K10-1002 Set of new Helveston Instruments including Moody Fixation Forceps

It’s a funny thingabout life; if you refuse toaccept anything but the best,you very often get it.

New

New

New

Mendez Multi-purpose LASIK Forceps

K5-5060 Mendez LASIK Forceps

Dr. Antonio Mendez, Jr. of Tijuana, Mexico, has designed a newmulti-purpose forceps specifically for LASIK surgery. It features:

• Vaulted jaws to conform to the curvature of the cornea with spatu-lated tips and edges to enter, dissect, elevate and smooth the flap

• Firm spring action for dissecting during enhancements

• Smooth inside jaw surfaces for grasping the flap

This Mendez LASIK forceps combines the features of a spatula,dissector, and forceps, making it truly a multi-purpose instrument.

Maddox LASIK Spatula

Dr. Lucio Buratto of Milano,Italy, has designed a 3-portcannula for irrigation duringLASIK surgery. This flattened 23 gauge cannula is vaulted to conformto the corneal curvature. Its smoothly burnished tip facilitates easyinsertion under the corneal flap. It features one front and two sideports which are designed to provide equal flow in three directions.

K7-5118 Buratto LASIK Irrigating Cannula

K3-2535 Maddox LASIK Spatula

A new double-ended instrument has been designed for LASIK surgeryby Robert Maddox, MD of El Paso, Texas. This instrument features a flatspatula on one end for elevating the flap and protecting the hinge. Around cylindrical spatula on the opposite end is used for repositing andsmoothing the flap.

Reversible Lid Speculumwith Solid Blades

F or those surgeons who need aspeculum which can reside on

either the nasal or temporal side,Katena has introduced a reversiblespeculum with solid blades.

This speculum specifically addressesthe problems encountered during

LASIK surgery. Inthe fully openposition, the wideclearance betweenthe blades of thisspeculum makes itideal for accommo-dating the vacuum

ring of a microkeratome.

The solid blades keep the surgicalfield free of eyelashes while theirnon-reflective finish eliminates glarefrom the microscope light.

The reversibility of this speculumalso makes this an excellent choice forcataract and other anterior segmentsurgeries.

K1-5680 Reversible Speculum

New LASIK Instruments

While the Ernest-McDonald inserting forceps has long been the instrument ofchoice for inserting silicone IOLs, this new model is designed to accommodateacrylic IOLs, such as the Acrysof® lens. It features very smoothly polishedconvex jaw surfaces that will not leave a lasting impression on the IOL, often aproblem with other inserters.

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capsulorrhexis. The cannula is thinnerat the tip for precise positioning bythe surgeon. Excellent purchase of thecapsular flap is achieved with theaspirating port, located on theposterior surface of the tip, whichprovides maximum control of thecapsulorrhexis. After removal of thecapsule contents, the smoothlyburnished aspirating tip is used togently polish the posterior capsule.

Brierley Capsulorrhexis CannulaContinued

® Acrysof is a Registered Trademark of Alcon Corp.

Buratto LASIK Irrigating Cannula

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K5-8272 Ernest-McDonald Forceps

ERNEST-McDONALD IOL INSERTING FORCEPS with Convex Jaws

NASAL SIDE

TEMPORAL SIDE

Katena Products, Inc., 4 Stewart Court, Denville, NJ 07834 • USA / ☎973-989-1600 • 800-225-1195 • FAX 973-989-8175 • E-MAIL globe@katena.com • www.katena.com

4 Stewart CourtDenville, New Jersey 07834 • USA

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If you have access to the Internet you can e-mail us atglobe@katena.com

Be sure to visit Katena’s website

to see ourNew Products

www.katena.com

NewFechtner Conjunctiva Forceps

K5-1820 Fechtner Ring Forceps

Have you everstruggled to pick up

conjunctiva only to find youare tearing or crushing it? Ifyour answer is yes, this newforceps is for you! It featuresdelicate ring shaped graspingtips which allow soft conjunc-

tival tissue to penetrate into thering opening, thus creatingtraction without cutting ortearing, as is commonlyexperienced with many otherforceps. In addition, thisforceps has tying platforms forhandling delicate sutures.

K3-4950 Keuch Pupil Dilator

Anew instrument for enlarging a small pupil in preparation forcataract surgery has been designed by Dr. Richard Keuch of Berlin,Germany. It features a narrow cannulated tip with one fixed iris

retractor for pulling the iris and a moveable central stem for pushing theiris. It is small enough to be used through a sideport incision, as well as theprimary cataract incision, allowing the surgeon to dilate the iris in twodifferent quadrants with one instrument.

KEUCH DILATOR FOR SMALL PUPILS

K5-5234 Maumenee Tying Forceps, straightK5-5235 Maumenee Tying Forceps, angled

“Groovy” Tying Forcepsprevents suture slippage

Katena now produces the MaumeneeTying Forceps with grooved interlock-ing jaws which securely grasp andhold even the most delicate sutures. Itfeatures a longitudinally serratedround handle with guide pin to keepthe jaws aligned during suturing.

Developed by Robert D. Fechtner, M.D., of Louisville, KY

When I was a boy offourteen, my fatherwas so ignorant I couldhardly stand to have the oldman around. But when I got tobe twenty-one, I was astonished at how much he had learned inseven years. Mark Twain

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