ULTRASHAPER KERATOME
Device Facts
| Record ID | K990227 |
|---|---|
| Device Name | ULTRASHAPER KERATOME |
| Applicant | Lasersight Technologies, Inc. |
| Product Code | HNO · Ophthalmic |
| Decision Date | Jan 31, 2000 |
| Decision | SESE |
| Submission Type | Traditional |
| Regulation | 21 CFR 886.4370 |
| Device Class | Class 1 |
| Attributes | Therapeutic |
Indications for Use
The UltraShaper™ System is an AC-powered device that is intended to shave a partial lamella section of the cornea.
Device Story
UltraShaper™ System is an AC-powered keratome used by clinicians to perform anterior lamellar circular corneal resections. The device consists of a cutting head, suction rings, motor handpiece, console, and foot-actuated switches. The principle of operation is similar to a carpenter's plane; a stainless steel blade oscillates at 7,500 RPM via a 12V DC motor to cut corneal tissue. The suction ring creates an annular vacuum chamber for attachment to the ocular globe. The console provides power and vacuum suction (High/Low/Off settings); it includes an internal barometer to monitor vacuum levels, providing audible and visual warnings if suction is suboptimal. The device is available in three fixed head sizes (130, 160, 180 microns) to determine resection thickness. The clinician controls the device via foot switch. By creating precise corneal sections, the device facilitates lamellar keratoplasty procedures, potentially improving patient visual outcomes.
Clinical Evidence
No new clinical data provided. Substantial equivalence is supported by 30-45 years of clinical history and literature regarding the use of keratomes for lamellar keratoplasty, which demonstrate acceptable postoperative refraction, visual acuity, and minimal complications.
Technological Characteristics
Materials: Stainless steel cutting head and suction rings. Energy: 110/120V AC console power; 12V DC motor. Principle: Oscillating blade (7,500 RPM) on dovetail guides. Form factor: Handheld keratome with console-based vacuum/power. Connectivity: None. Sterilization: Sterile single-use blades and suction tubing; handpiece cleaned with alcohol. Electrical safety: Conforms to IEC-601-1.
Indications for Use
Indicated for shaving a partial lamellar section of the cornea. Prescription use only.
Regulatory Classification
Identification
A keratome is an AC-powered or battery-powered device intended to shave tissue from sections of the cornea for a lamellar (partial thickness) transplant.
Predicate Devices
- Automatic Corneal Shaper (K941550)
- Steinway-Barraquer In-Situ Microkeratome Set (K860001)
- Micro Refractive System Model 1000 (K903912)
Submission Summary (Full Text)
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K990227
# JAN 31 2000
### Summary of Safety and Effectiveness for 510(k)
- Submitter of Information: 1.
LaserSight Technologies, Inc. 3300 University Boulevard, Suite 140 Winter Park, Florida 32792 Michael P. Dayton, MS, RAC Contact Person: Senior Vice President Chief Technical Officer Tel (407) 678-9900 Fax (407) 671-0180
- Device Name: 2.
| Trade / Proprietary Name: | UltraShaper™ System |
|------------------------------|--------------------------------------------|
| Classification / Usual Name: | Keratome |
| Device Classification | Class I, 86 HNO (21 CFR, Section 886.4370) |
| Performance Standards | N/A |
- 3. Predicate Devices:
The UltraShaper™ Keratome for which marketing clearance is requested is substantially equivalent to the following predicate devices:
- Automatic Corneal Shaper, manufactured and distributed bv Chiron Vision . Corporation, 9342 Jeronimo Road, Irvine, CA [cleared under K941550].
- Steinway-Barraquer In-Situ Microkeratome Set, manufactured and distributed by . Steinway Instrument Company, Inc., San Diego, CA. This device is identical to the Allergan Medical Optics Barraquer-Krumeich Refractive Set [cleared under K860001].
- Micro Refractive System Model 1000, manufactured and distributed by Micro Precision . Instrument Company, 2323 N. Central Avenue, Suite 2105, Phoenix, AZ [cleared under K903912].
- 4. Description of Device:
Device Description: The UltraShaper™ System consists of the following components: (a) cutting head, (b) suction rings / handles, (c) motor handpiece, (d) handpiece-to-console cable, (e) suction tubing set, (g) blade assembly, and (h) console power / suction supply with foot actuated switches.
The cutting head and suction rings / handles are constructed entirely from stainless steel. The UltraShaper™ System is designed to perform anterior lamellar circular corneal
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resections of a predetermined diameter and thickness based upon the principle of a carpenter's plane. A cutting blade emerges from the center of the keratome plane. The stainless steel blade oscillates by a small DC motor (in the motor handpiece) controlled by foot switch. The cutting head slides on dovetail guides on a circular suction ring. The cutting head contains a gear drive train that engages a gear rack on one side of the suction ring to drive the keratome head across the suction ring and cornea. The suction ring provides an annular vacuum chamber for temporary attachment to the ocular globe. The cutting head has a fixed foot plate and is available in three standard head sizes, 130, 160 and 180 microns, depending on the thickness of the corneal section desired. There are also three different suction ring / handle sizes available to accommodate the variations in corneal curvature from patient to patient. A (motor handpiece-to-console) cable is also supplied with each UltraShaper™ keratome.
The UltraShaper™ Console Power Supply provides the power to both the keratome motor and the suction supply for holding the ring in place on the cornea. This is the same console which drives the company's ADK disposable keratome. The console has three vacuum suction settings, HIGH, LOW, OFF. The console will only permit the keratome to operate (transverse the cutting plane) while in the HIGH setting. While in the HIGH mode, the console, with its internal barometer, reacts to vacuum suctions values which are below the optimum by signaling the operator with audible and visual warnings. The UltraShaper™ Console Power Supply conforms to IEC-601-1 electrical safety standard.
A sterile suction tubing set, which is generic to several keratome systems, is used to connect the suction ring / handle of the UltraShaper™ to the suction port on the console. Suction tubing sets are supplied sterile and are intended for single use. Likewise, keratome blades are supplied sterile and are intended for single use.
#### ડ. Intended Use for Subject Device:
The Automated Disposable Keratome is an AC-powered device that is intended to shave a partial lamellar section of the cornea.
#### Comparison of Technological Characteristics with Predicate Devices: 6.
The UltraShaper™ Keratome operates on the same principles and has the same technological characteristics as other legally marketed keratomes. However, the UltraShaper™ is most similar to the Chiron Automated Corneal Shaper™ (ACS). The UltraShaper™ shares the same primary drive mechanism as the Chiron ACS. Historically, the DC-powered gear drive mechanism, which automatically draws the blade across dovetail guides, has proven itself safe and effective in producing precise sections of corneal tissue.
The motor handpiece for the UltraShaper™ device uses the same DC motor in the Chiron ACS™. The connect point between the UltraShaper™ motor handpiece is similar to the ACS™ system. The UltraShaper™ motor handpiece, like the ACS™ motor handpiece, is disinfected by cleaning with alcohol. Refer to TABLE 1 for a comparison of features for substantially equivalent devices.
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The differences between the UltraShaper™ and currently marketed devices, particularly the Chiron ACS device, are insignificant and do not affect the safety and effectiveness of the device since they do not alter the energy source, materials or principle of operation.
#### Discussion of Clinical Tests: 7.
The techniques and instrumentation for lamellar keratoplasty were introduced 45 years ago. Keratomes have been in use for nearly 30 years, beginning with the introduction into commercial distribution of the Steinway/Barraquer In Situ Microkeratome Set in 1965. A review of the published literature on keratomes indicates that these devices are associated with acceptable clinical results in terms of postoperative refraction and visual acuity, and minimal postoperative complications.
| TABLE 1 | | | | |
|----------------------------------------------------------------------------|---------------------------------------------------|-----------------------------------------------|-----------------------------------------------------------|-----------------------------------------------------------|
| INFORMATION ON SUBSTANTIALLY EQUIVALENT PRODUCTS<br>COMPARISON OF FEATURES | | | | |
| | Company | | | |
| Parameter | LaserSight<br>UltraShaper™<br>System | Chiron Vision<br>Automated Corneal<br>Shaper™ | Allergan Medical<br>Barraquer-Krumeich<br>Refractive Set™ | Micro Precision<br>Micro Refractive™<br>System Model 1000 |
| Major<br>Components | Console | Console | Console | Console |
| | 1 Suction Rings | 1 Adjustable<br>Height Suction<br>Ring | 25 Suction Rings | 25 Suction Rings |
| | Fixed Depth<br>Keratome Head<br>(130, 160, 180 μ) | Adjustable<br>Keratome Head | Keratome Head<br>with Thickness<br>Plates | Adjustable<br>Keratome Head |
| | Electric Motor<br>12 v DC | Electric Motor<br>12 v DC | Electric Motor<br>12 v DC | Turbine Motor |
| | Blade Oscillation<br>7,500 RPM | Blade Oscillation<br>7,500 RPM | Blade Oscillation<br>Not known | Blade Oscillation<br>0-20,000 RPM |
| Console Details | | | | |
| Electrical | 110/120 AC | 110/120 AC | 110/120 AC | None |
| Vacuum Pump | DC Powered | DC Powered | AC Powered | Nitrogen Gas<br>Venturi Type<br>Pump |
| Blade Height<br>Verification | Measured in<br>Clinic with<br>Micron-Scope | Measured in<br>Clinic with<br>Micron-Scope | None | Measured in<br>Clinic with<br>Digital Indicator |
| Foot Controls | DC Powered | DC Powered | DC Powered | Pneumatic |
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Image /page/3/Picture/1 description: The image is a black and white logo for the U.S. Department of Health & Human Services. The logo features a stylized eagle with three stripes representing the department's mission. The words "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" are arranged in a circular pattern around the eagle.
Public Health Service
JAN 31 2000
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
Mr. Sam A. Mirza Manager, Regulatory Affairs LaserSight Technologies, Inc. 3300 University Boulevard, Suite 140 Winter Park, Florida 32792
Re: K990227 Trade Name: UltraShaper™ System Regulatory Class: I Product Code: 86 HNO Regulation: 886.4370 (Keratome) Dated: January 12, 2000 Received: January 13, 2000
Dear Mr. Mirza:
We have reviewed your Section 510(k) notification of intent to market the device referenced above and we have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration.
If your device is classified (see above) into either class II (Special Controls) or class III (Premarket Approval), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 895. A substantially equivalent determination assumes compliance with the current Good Manufacturing Practice requirements, as set forth in the Quality System Regulation (QS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic (QS) inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP regulation may result in regulatory action. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal laws or regulations .
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Page 2 - Mr. Sam A. Mirza
This letter will allow you to begin marketing your device as described in your 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4613. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its internet address "http://www.fda.gov/cdrh/dsmamain.html".
Sincerely yours,
A. Ralph Rosenthal
A. Ralph Rosenthal, M.D. Director Division of Ophthalmic Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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510 (k) NUMBER (IF KNOWN) : K990227
UltraShaper™ System DEVICE NAME :
INDICATIONS FOR USE :
The UltraShaper™ System is an AC-powered device that is intended to shave a partial lamella section of the cornea.
( PLEASE DO NOT WRITE BELOW THIS LINE – CONTINUE ON ANOTHER PAGE IF NEEDED )
| | Concurrence of CDRH, Office of Device Evaluation (ODE) |
|--|--------------------------------------------------------|
|--|--------------------------------------------------------|
| | Bruce Drum |
|---------------|--------------------------------|
| | (Division Sign-Off) |
| | Division of Ophthalmic Devices |
| 510(k) Number | K990227 |
| Prescription Use | X | OR | Over-The-Counter-Use |
|----------------------|---|----|--------------------------|
| (Per 21 CFR 801.109) | | | (Optional Format 1-2-96) |
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