AOC MEDICAL SYSTEM MODEL PHASE II 50 SURGICAL DIODE LASER SYSTEM

K961705 · Applied Optronics Corp. · GEX · Nov 1, 1996 · General, Plastic Surgery

Device Facts

• Record ID: K961705
• Device Name: AOC MEDICAL SYSTEM MODEL PHASE II 50 SURGICAL DIODE LASER SYSTEM
• Applicant: Applied Optronics Corp.
• Product Code: GEX · General, Plastic Surgery
• Decision Date: Nov 1, 1996
• Decision: SESE
• Submission Type: Traditional
• Regulation: 21 CFR 878.4810
• Device Class: Class 2
• Attributes: Therapeutic

Intended Use

The AOC Phase II 50 surgical diode laser system has the same general intended use as the predicate diode lasers. This intended use includes incision, excision, coagulation and vaporization applications in the following surgical specialties: Urology; Gynecology; Gastroenterology; Pulmonology; General and Thoracic Surgery; Neurosurgery (hemostasis); Ear, Nose, and Throat; Head/Neck Surgery; Dermatology/Plastic Surgery.

Device Story

Fiber-coupled diode laser system; delivers 50-60W CW optical power. Inputs: user-selected power/pulse settings via front panel/footswitch/handswitch. Transformation: semiconductor diode lasers (indium gallium aluminum on gallium arsenide) emit 980nm light; fiber-coupled into delivery fibers. Output: 980nm laser energy for surgical tissue interaction. Used in OR/clinical settings by qualified physicians. Healthcare providers use output for incision, excision, coagulation, and vaporization. Benefits: air-cooled, compact, immediate turn-on, no warm-up, no water cooling required.

Clinical Evidence

No clinical test data submitted. Bench testing demonstrated ability to produce rated power and wavelength. Peer-reviewed literature on 980nm tissue interaction provided.

Technological Characteristics

Indium gallium aluminum on gallium arsenide semiconductor diode lasers; 980nm wavelength; air-cooled; SMA-905 fiber connectors; microprocessor-controlled; modular design (laser/cooling, optics, power/control); continuous and pulsed modes; visible aiming laser.

Indications for Use

Indicated for surgical incision, excision, coagulation, and vaporization in urology, gynecology, gastroenterology, pulmonology, general/thoracic surgery, neurosurgery (hemostasis), ENT/head/neck surgery, and dermatology/plastic surgery.

Regulatory Classification

Identification

(1) A carbon dioxide laser for use in general surgery and in dermatology is a laser device intended to cut, destroy, or remove tissue by light energy emitted by carbon dioxide.(2) An argon laser for use in dermatology is a laser device intended to destroy or coagulate tissue by light energy emitted by argon.

Predicate Devices

• AOC Medical Sys. 5060 (K961705)
• Cynosure Phototome (K961705)
• Cytocare DioLase HP-1 (K961705)
• DioMed DioMed 25 (K961705)
• Indigo Medical IDE 830E (K961705)
• Sharplan Lasers 6020 (K961705)

Submission Summary (Full Text)

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APPLIED OPTRONICS CORP.
K961705
111 Corporate Blvd. • Building J • South Plainfield, NJ 07080
TEL [phone] • FAX [phone]
NOV - 1 1996

# SECTION K

## 510 (k) SUMMARY OF SAFETY AND EFFECTIVENESS

### 1. Submitter Information

AOC Medical Systems
A Division of Applied Optronics Corporation
111 Corporate Blvd. Building J
South Plainfield, NJ 07080
Telephone: [phone]
Fax: [phone]
Contact Person: Douglass Mead
Regulatory Affairs
Date Prepared: April 30, 1996

### 2. Model AOC Phase II 50 Surgical Diode Laser

### 3. Predicate or Legally Marketed Devices:

| Manufacturer | Model | Laser Type |
| --- | --- | --- |
| AOC Medical Sys. | 5060 | 980 nm Diode Laser |
| Cynosure | Phototome | 980 nm Diode Laser |
| Cytocare | DioLase HP-1 | 980 nm Diode Laser |
| DioMed | DioMed 25 | 810 nm Diode Laser |
| Indigo Medical | IDE 830E | 830 nm Diode Laser |
| Sharplan Lasers | 6020 | 810 nm Diode Laser |

### 4. General System Description

The AOC Medical Systems Model Phase II 50 Fiber-Coupled Diode Laser System delivers up to fifty (50) or sixty (60) watts of CW optical power from a compact, air cooled unit. It is a complete, self-contained instrument, including a high efficiency power supply, an adjustable light output with constant current operation and a visible aiming laser. The system couples the laser light into high numerical aperture delivery fibers fitted with standard SMA-905 fiber connectors.

The diode lasers in this unit were fabricated by Applied Optronics Corp. from single quantum well, strained-layer, indium gallium aluminum on gallium arsenide semiconductor material. The diode lasers are sealed in a rugged, factory-aligned, environmentally protective module. High

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electrical efficiency of the diode lasers eliminate the need for water cooling and assure low maintenance, reliable laser operation for this all-solid-state system. Each individual diode laser emits at a narrow wavelength; however coupling several diodes through a fiber optic bundle results in each diode wavelength contributing to a broader spectrum emitted form the final delivery fiber. The laser energy is centered at 980nm with a total range from approximately 970-1000 nm. For the 60 watt version, premium, high-efficient diode laser components are selected in constructing the laser module and the output display is adjusted accordingly.

The AOC Phase II 50 has a modular design comprised of:

- Laser Diode and Cooling Module containing the laser diodes, the heat sink and fans.
- Optics Module containing a beamsplitter pick-off for display of the total optical power.
- Front panel for simple control of the unit.
- Transformer isolated power supplies and control electronics.

Unique attributes of this system include the following:

- Multiple, individually fiber-coupled, high power diode lasers mounted on a large thermal footprint to allow sustained high power CW operation without water cooling.
- Optical power level continuously adjustable from the front panel, with display of optical output power.
- Low power, visible aiming laser for beam targeting prior to activation of the high power lasers. The aiming laser is controlled independently of the high power lasers.
- Immediate turn-on capability. No warm-up period. No system alignments or maintenance to be made by the user.
- Forced air cooling (no water). Maximum inlet air temperature 30° C.
- Individually replaceable, fiber pigtailed diode lasers. Repairs performed at factory.

The microprocessor controlled AOC Phase II 50 diode laser system is designed to allow easy and safe operation of the laser using controls common to other surgical laser systems. The laser system utilizes a menu driven set-up operation for user prompts and program entry. The laser can be set for continuous output or programmed for single or repeat pulses at output powers up to 50 or 60 watts depending on the unit specified. A footswitch or handswitch, activated by the user, always controls laser output. An optional remote control for use in a sterile plastic dressing (e.g., standard OR microscope drape) allows the user to change the power and activate Ready and Standby Modes

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The following pre-packaged, presterilzed disposable optical fibers are available for use with the AOC Phase II 50 laser system:

| Fiber Model | Type |
| --- | --- |
| AOC DCLF-600 | 600μm Conical tip |
| AOC DCLF-1000 | 1000μm Conical tip |
| AOC DCLF-600B | 600μm Hemispherical Ball tip |
| AOC DCLF-1000B | 1000μm Hemispherical Ball tip |
| AOC DBLF-60S | 600μm Side firing |
| AOC DBLF-100S | 1000μm Side firing |
| AOC DBLF-60SF | 600μm Scatter Free Side firing |
| AOC DBLF-60 | 600μm Free Beam |
| AOC Neos | Conical (conical shaped) |
| AOC Neos | Delta (wedge shaped) Handpiece, Laparoscopic and Bare Fiber |
| AOC HSD | Conical shaped with electrode |

## 5. Intended Use:

The AOC Phase II 50 surgical diode laser system has the same general intended use as the predicate diode lasers. This intended use includes incision, excision, coagulation and vaporization applications in the following surgical specialties:

- Urology
- Gynecology
- Gastroenterology
- Pulmonology
- General and Thoracic Surgery
- Neurosurgery (hemostasis)
- Ear, Nose, and Throat; Head/Neck Surgery
- Dermatology/Plastic Surgery

No new intended use was sought in this Premarket Notification.

The wavelength (980 nm) and tissue effects of the AOC Phase II 50 diode laser are closely matched to the predicate lasers at 805-830 and 980 nm. The 980 nm wavelength absorption in tissue is less dependent on variations in tissue pigment or vascularity than at 805 nm and has a slightly higher water absorption than the 1064 nm wavelength. Other predicate 980 nm diode laser systems have been found substantially equivalent to Nd:YAG and 805 nm diode lasers.

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# 6. Comparison of Technological Characteristics

The AOC Phase II 50 laser output is at the same nominal wavelength, 980 nanometers as the AOC 5060, Cynosure Phototome, and Cytocare DioLase HP-1 lasers. Its laser tissue interactions would be expected to be identical. The same individual diode laser components are supplied by Applied Optronics for all four laser systems. The AOC Phase II 50 differs in wavelength from the DioMed 25, Indigo 830 and Sharplan 6020 (at 805 -830 nanometers) which has a slightly greater energy absorption in pigment and blood rich tissue. The 980 nm wavelength, like the Nd:YAG wavelength at 1064 nm, is less dependent on variations in tissue pigment and blood content.

The temporal output of all these systems is the same. These lasers are operated most often in the Continuous Wave (steady state) Mode but can be electronically gated to produce time pulses, single or repeated. The AOC Phase II 50 laser has a Continuous, Single Pulse, Countdown Pulse, Repeat Pulse, and Exponential Pulse output which are found on one or more of the predicate lasers. Its range of timed outputs are within the ranges of the above cleared products.

The power output (50 or 60 watts) and intensities of the AOC Phase II 50, AOC 5060, Cytocare DioLase (60 watt), and Cynosure Phototome (50 watt), are the same and use the same diameter free beam optical fiber for delivery systems. The output power of the AOC Phase II 50 is about twice the power of the Diomed 25, Indigo 830, and Sharplan 6020. For applications using contact fibers with sculpted tips which typically operate below 25 watts, the difference in output is not clinically significant.

The AOC Phase II 50 laser system has the same overall characteristics and features as the predicate diode laser systems. Like these lasers, the AOC Phase II 50 provides for adjustable power output, internal monitoring of power output accuracy, prominent power output display, operation in the Continuous Mode and Single Pulse, and other Modes (with adjustable pulse duration), foot switch activation, safety interlocks, a red aiming beam, Ready and Standby Modes, an electrically safe design, visual and audible indicators of operation, as well as a rugged cabinet designed for the clinical environment.

Like The Sharplan 6020, the AOC Phase II 50 is equipped for handswitch activation of the laser output for convenient surgical control. Also, like the Indigo unit, the AOC Phase II 50 has a Decay (e.g., exponential) Pulse mode.

# 7. Performance Data

No clinical test data was submitted in support of this submission. Peer reviewed clinical articles on the tissue interaction at 980 nm were included in the 510 (k). Bench test data was submitted demonstrating that the design is able to produce the rated power and wavelength.

Notice: This Summary was prepared in order to comply with CFR 21 807.87. AOC Medical Systems makes no claim that any disease or other condition can be cured and promotes its laser as a surgical tool only for use by qualified physicians. Laser surgery, like any surgery, entails necessary risks, some of which may result in complications, injury or, in the extreme, death.