(188 days)
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No
The document describes a cryosurgical system with a console and probes, focusing on mechanical and pneumatic control, and performance verification against existing standards and predicate devices. There is no mention of AI, ML, image processing, or data sets typically associated with AI/ML technologies.
Yes
The descriptions of the intended use and device function clearly indicate that the device is used for treating various ophthalmic conditions through cryopexy and cryodestruction, which are therapeutic procedures.
No
The device is described as a system for ophthalmic surgery, specifically for procedures like cryopexy, glaucoma treatment, and cataract extraction, which are therapeutic interventions rather than diagnostic ones.
No
The device description clearly outlines hardware components including a console, probes (reusable and disposable), power supply, controller PCB, pneumatic control module, LCD screen, membrane key panel, footswitch, and connections for gas supply and scavenging system.
Based on the provided information, the Keeler Cryomatic System and probes are not an In Vitro Diagnostic (IVD) device.
Here's why:
- Intended Use: The intended use clearly states the device is for use in ophthalmic surgery for procedures like cryopexy, cyclo destructive procedures, extraction of fragments, cataract extraction, cryo destruction of lash follicles, and treatment of ROP. These are all surgical procedures performed on the patient's body.
- Device Description: The description details a system and probes used for applying cold temperatures during surgery. This is a therapeutic and surgical tool, not a device used to examine specimens in vitro (outside the body).
- Lack of IVD Characteristics: There is no mention of analyzing biological samples (blood, tissue, etc.), performing tests on specimens, or providing diagnostic information based on laboratory analysis.
IVD devices are specifically designed to examine specimens derived from the human body to provide information for diagnostic, monitoring, or compatibility purposes. The Keeler Cryomatic System and probes do not fit this definition.
N/A
Intended Use / Indications for Use
The Keeler Cryomatic System and probes are for use in ophthalmic surgery such as cryopexy for retinal detachment, cyclo destructive procedures in refractory glaucoma, extraction of fragments within the vitreous cavity, cataract extraction, cryo destruction of lash follicles for trichiasis and treatment of retinopathy of prematurity (ROP).
Product codes (comma separated list FDA assigned to the subject device)
HRN
Device Description
The Cryomatic MKII console is a self-contained system. The console consists of a rigid PU enclosure, housing the principle subsystems, switch mode power supply, controller PCB and pneumatic control module. On the front of the console is an LCD screen and membrane key panel. The console provides the connection point for the range of probe (reusable and disposable), footswitch, mains electricity, gas supply and scavenging system.
There is a variety of Keeler Re-usable Cryomatic Probes whose stainless tips are shaped depending on surgical application. The plastic handle is permanently connected to flexible pressure hose and integral connector, which connects to Cryomatic MKII Console.
The Keeler Disposable Cryo Probe comprises a stainless steel stem with a metal handle connected to a 2m long bi-lumen high-pressure plastic hose contained within a protective outer tube and terminated with a customdesigned plastic connector for insertion into the Cryomatic MKII console.
When the footswitch is pressed, high pressure cryogen gas is circulated through the Cryo probe, rapid gas expansion in the probe tip causes freezing according to the Joule-Thompson principle. This gas supply to the probe tip is controlled using solenoid valves interconnected via an arrangement of galleries in a manifold.
The system displays user information by means of a graphical LCD on the front panel. All relevant information such as operating state, warnings, condition of gas cylinder and any fault information is displayed in an unambiguous fashion.
Mentions image processing
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Mentions AI, DNN, or ML
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Input Imaging Modality
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Anatomical Site
Eye
Indicated Patient Age Range
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Intended User / Care Setting
Ophthalmic surgeon (inference from "ophthalmic surgery")
Description of the training set, sample size, data source, and annotation protocol
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Description of the test set, sample size, data source, and annotation protocol
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Summary of Performance Studies (study type, sample size, AUC, MRMC, standalone performance, key results)
Verification tests have been carried out to confirm that the cryogenic performance and safety aspects of the modified console and probes are comparable with the Keeler Cryomatic System and Probes cleared for marketing under 510(k) K062412 and K112093. These verification tests evaluated the following aspects:
a) Probe external temperature and repeatability
b) Iceball growth capability
c) Defrost performance
d) Tractive power
The modified Keeler Cryomatic System and probes have been evaluated against the requirements of IEC 60601-1 for electrical safety and to IEC 60601-1-2 for electromagnetic compatibility. In all tests the modified device was in compliance with these FDA recognized standards.
Key Metrics (Sensitivity, Specificity, PPV, NPV, etc.)
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Predicate Device(s): If the device was cleared using the 510(k) pathway, identify the Predicate Device(s) K/DEN number used to claim substantial equivalence and list them here in a comma separated list exactly as they appear in the text. List the primary predicate first in the list.
Reference Device(s): Identify the Reference Device(s) K/DEN number and list them here in a comma separated list exactly as they appear in the text.
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Predetermined Change Control Plan (PCCP) - All Relevant Information for the subject device only (e.g. presence / absence, what scope was granted / cleared under the PCCP, any restrictions, etc).
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§ 886.4170 Cryophthalmic unit.
(a)
Identification. A cryophthalmic unit is a device that is a probe with a small tip that becomes extremely cold through the controlled use of a refrigerant or gas. The device may be AC-powered. The device is intended to remove cataracts by the formation of an adherent ice ball in the lens, to freeze the eye and adjunct parts for surgical removal of scars, and to freeze tumors.(b)
Classification. Class II.
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Image /page/0/Picture/1 description: The image shows a date, which is December 3, 2013. The month is abbreviated as DEC. The day is the number 3. The year is 2013.
510(k) Summary of Safety and Effectiveness
Submitter Name and Address 1.
Ophthalmic Instruments
Keeler Instruments Inc 459 Parkway Broomall PA 19008
| Contact: | Eugene R Van Arsdale (Marketing Manager) |
|---|---|
| Phone: | 1 610 353 4350 |
| Fax: | 1 610 353 7814 |
| Email: | erv@keelerusa.com |
April 2013 (revised December 2013) Date Prepared:
2. Device Name (Unmodified)
Trade Name: Common/Usual Name: Classification Name: 886.4170 Regulation No: Device Regulatory Class: II HRN Product Code: Review Panel: Ophthalmic 510(k) Number: K062412 & K112093
Cryomatic System and Probes Cryophthalmic Surgical System and Probes Unit, Cryophthalmic, AC-powered
3. Proposed Modification
. '
The proposed modification described in this Special 510(k) covers the simplification of the coupling mechanism to accept both Keeler Cryomatic disposable and re-useable probes without the use of a special adaptor.
Since the launch of the Keeler Cryomatic System , a disposable version of the Retinal Probe has become available which has a different interface connection than that of the Keeler Re-usable Probe range which resulted in Keeler developing an adaptor so that the disposable variant could be connected to the console.
The modification has simplified the probe coupling system. It is a safe, quick release coupling that accepts both the Keeler range of modified reuseable probes and Keeler disposable probes (unchanged), without the need for a special adaptor.
The intended use of the Keeler Cryomatic System and Probes is unchanged following the introduction of the new coupling mechanism. The control of the freeze and defrost functions is the same as that for the current Keeler range of non-disposable probes.
1
Keeler
Ophthalmic Instruments
4. Device Description Console
The Cryomatic MKII console is a self-contained system. The console consists of a rigid PU enclosure, housing the principle subsystems, switch mode power supply, controller PCB and pneumatic control module. On the front of the console is an LCD screen and membrane key panel. The console provides the connection point for the range of probe (reusable and disposable), footswitch, mains electricity, gas supply and scavenging system.
Crvomatic Probes
There is a variety of Keeler Re-usable Cryomatic Probes whose stainless tips are shaped depending on surgical application. The plastic handle is permanently connected to flexible pressure hose and integral connector, which connects to Cryomatic MKII Console.
The Keeler Disposable Cryo Probe comprises a stainless steel stem with a metal handle connected to a 2m long bi-lumen high-pressure plastic hose contained within a protective outer tube and terminated with a customdesigned plastic connector for insertion into the Cryomatic MKII console.
Method of Operation
When the footswitch is pressed, high pressure cryogen gas is circulated through the Cryo probe, rapid gas expansion in the probe tip causes freezing according to the Joule-Thompson principle. This gas supply to the probe tip is controlled using solenoid valves interconnected via an arrangement of galleries in a manifold.
The system displays user information by means of a graphical LCD on the front panel. All relevant information such as operating state, warnings, condition of gas cylinder and any fault information is displayed in an unambiguous fashion.
5. Labeling and Intended Use
Instructions for use (IFU) for the Keeler Cryomatic System have been updated to incorporate the use of the new coupling mechanism.
A separate reusable probe IFU will no longer be supplied with each probe as is currently the case. Instead a copy of the IFU supplied with the console will be supplied with the probes.
Console labels have been updated to identify the MKII model, and packaging labels for the reusable probes have been updated with revised part numbers of the modified versions.
The IFU for the disposable probes has also been updated to reference the new Cryomatic System.
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Image /page/2/Picture/0 description: The image shows the logo for Keeler Ophthalmic Instruments. The word "Keeler" is in a bold, sans-serif font. Below the word "Keeler" is the phrase "Ophthalmic Instruments" in a smaller, sans-serif font. The logo is simple and professional.
The intended use of the Keeler Cryomatic System & Probes (including the disposable probe) is the same as originally cleared under the original 510(k) premarket notifications (K062412 &K112093).
6. Materials Biocompatibility
With respect to materials that come into direct contact intentionally with the eve during surgery, there are no changes. In both types of probe, the exposed stem is made of stainless steel with a smooth welded tip. This tip is formed by electron beam welding utilizing the parent material, which does not require addition of any other materials such as flux or weld filler.
7. Sterilization and Shelf Life
The Sterilization method (pre-sterilised with ethylene oxide gas) for the single use Disposable Cryo Probes is unchanged.
The recommended method for sterilizing re-usable probes is steam sterilization, which remains unchanged. As the design of the re-usable probes has changed, validation of the steam sterilization process was carried out to demonstrate that the sterilization parameters outlined in the instruction for use are sufficient to sterilize the modified probes.
Comparison of the device with the Predicate 8.
The comparison table below summarizes the similarities and differences between both systems, with respect to safety and effectiveness, which are discussed in more detail in the following sections.
| Characteristic
Features | Modified Device | Cryomatic System
and Probes | Notes |
|-----------------------------------------|------------------------------------------|------------------------------------------|-----------|
| General
Arrangement | Desktop console with
Optional trolley | Desktop console with
Optional trolley | No change |
| Cryogen Type | CO2 or N2O | CO2 or N2O | No change |
| Single cylinder
connection | Yes | Yes | No change |
| Freeze system
pressure
regulation | Automatic | Automatic | No change |
| Freeze control | Footswitch | Footswitch | No change |
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Image /page/3/Picture/0 description: The image shows the word "Keeler" in a bold, sans-serif font. The letters are closely spaced together, creating a compact and easily readable word. The text is black against a white background.
Ophthalmic Instruments
| Purge Cycle | Manual | Automatic | Purge cycle is not
required for the
disposable probe,
user initiates the
purge cycle for
reusable probes.
The purge cycle is
intended to
remove any debris
left in the reusable
probes following
the sterilization
process.
The modification
does not affect the
safety or
effectiveness of
the device |
|--------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Auto-clean | Yes | Yes | No change |
| Audible Indicator | Yes | Yes | No change |
| Cryo-probe
connection
mechanism | Quick release | Quick release
Console - 2 male
plugs
Probes - 2 female
plug sockets | The coupling
mechanism has
been updated to
accommodate
both disposable
and reusable
probes.
The modification
does not affect the
safety or
effectiveness of
the device |
| Disposable probe
connection | No adaptor required | Connected to the
console via
disposable probe
adaptor | The coupling
mechanism has
been updated to
accommodate
both disposable
and reusable
probes.
The modification
does not affect the
safety or
effectiveness of
the device |
| Instruction for
Use (IFU) | The IFU (Part # EP59-
11410) has been
updated to include
instructions on how to
operate the new
coupling mechanism,
new graphics have
been added to the
symbols section, the
list of probes used
with the devices has
been updated to
reference the modified
probe part numbers
as well the disposable
probes and the
Trouble Shooting
section has been
updated. | IFU supplied with the
console (Part # 2509-
P-8012)
The list of probes
used with the
Cryomatic Console
does not reference
the disposable probe | The intend use of
the device has not
changed
The modifications
do not affect the
safety or
effectiveness of
the device |
| Instruction for
Use (IFU) | IFU (part # EP59-
11410) supplied with
the console and the
probes | IFU supplied with the
console (part # 2509-
P-8012)
IFU supplied with
probes (part #
KCU402) | The IFU (part #
EP59-11410)
contains all the
information
needed to safely
operate and
console and
probes |
| Disposable probe
IFU (Part # 2508-
P-7022) | IFU (Part # EP59-
41003) updated to
approve use with
modified console.
For use only with the
Keeler Disposable
Probe Adapter (2508-
P-8026) and
Cryomatic Console
(2509-P-1000) or the
Cryomatic MKII
Console (2509-P-
1010) | For use only with the
Keeler Disposable
Probe Adapter (2508-
P-8026) and
Cryomatic Console
(2509-P-1000) | Allows use with
the modified
console |
| Freeze Zone | End freeze | End freeze | No change |
| Construction | Stainless steel
(Electron beam
welding) | Stainless steel
(Electron beam
welding) | No change |
| Probe range | Full range of
ophthalmic probes | Full range of
ophthalmic probes | No change |
| Electrical supply | mains | mains | No change |
| Control system | Embedded micro-
controller (embedded
software) | Embedded micro-
controller (embedded
software) | Software has been
updated to
incorporated
changes to the
coupling
mechanism
The modification
does not affect the
safety or
effectiveness of
the device |
| Sterilization | Pre-vacuum (porous
load) 134 - 137 °C
(273-279 °F)
3 minutes
Pre-vacuum (porous
load) 134 - 137 °C
(273-279 °F)
18 minutes | Pre-vacuum (porous
load) 134 - 137 °C
(273-279 °F)
3 minutes
Gravity 121-124°C
(250-255°F)
30 minutes | No requirement to
have two methods
of sterilization.
The sterilization
methods have
been validated
The modification
does not affect the
safety or
effectiveness of
the device |
4
Keeler
Ophthalmic Instruments
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Image /page/5/Picture/0 description: The image contains the word "Keeler" in a bold, sans-serif font. The text is black against a white background. The letters are evenly spaced and easily readable.
Ophthalmic Instruments
9. Performance and Safety
Verification tests have been carried out to confirm that the cryogenic performance and safety aspects of the modified console and probes are comparable with the Keeler Cryomatic System and Probes cleared for marketing under 510(k) K062412 and K112093.
These verification tests evaluated the following aspects:
- a) Probe external temperature and repeatability
- b) Iceball growth capability
- c) Defrost performance
- d) Tractive power
The modified Keeler Cryomatic System and probes have been evaluated against the requirements of IEC 60601-1 for electrical safety and to IEC 60601-1-2 for electromagnetic compatibility.
In all tests the modified device was in compliance with these FDA recognized standards.
6
Keeler
Ophthalmic Instruments
Substantial Equivalence 10.
The modified Keeler Cryomatic System and Probes (Keeler Cryomatic MKII System), is considered to be substantially equivalent to the Cryomatic System and Probes described in the original 510(k) submissions (K062412 &K112093).
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Image /page/7/Picture/0 description: The image shows a logo for the U.S. Department of Health & Human Services. The logo consists of a stylized symbol resembling an eagle or bird in flight, positioned to the right. To the left of the symbol, the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged in a circular fashion around the symbol. The logo is presented in black and white.
DEPARTMENT OF HEALTH & HUMAN SERVICES
Public Health Service
December 23, 2013
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
Keeler Instruments, Inc. Mr. Eugene R. Van Arsdale Marketing Manager 456 Parkway Broomall, PA 19008-4295
Re: K131787
Trade/Device Name: Cryomatic MKII Console, Cryomatic MKII Probes, Disposable Cryo Probes Regulation Number: 21 CFR 886.4170 Regulation Name: Cryophthalmic Unit Regulatory Class: Class II Product Code: HRN Dated: November 25, 2013
Received: November 26, 2013
Dear Mr. Van Arsdale:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate 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) that do not require approval of a premarket approval application (PMA). 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. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies.
8
Page 2 - Mr. Eugene R. Van Arsdale
You must comply with all the Act's requirements, including, but not limited to: Registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting (reporting of medical device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Small Manufacturers. International and Consumer Assistance at its tollfree number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm. Also, please note the regulation entitled. "Misbranding by reference to premarket notification" (21CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to
http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely yours,
Deborah L. Falls -S
for Malvina B. Eydelman, M.D. Director Division of Ophthalmic and Ear, Nose and Throat Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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Image /page/9/Picture/0 description: The image shows the word "Keeler" in a bold, sans-serif font. Below the word "Keeler" is the phrase "Ophthalmic Instruments" in a smaller, less bold font. The text appears to be part of a logo or heading, possibly for a company specializing in ophthalmic instruments.
2. Indications for Use Statement
510(k) Number (if known): K131787
Device Name: Keeler Cryomatic MKII Cryosurgical System.
Indications for Use:
The Keeler Cryomatic System and probes are for use in ophthalmic surgery such as cryopexy for retinal detachment, cyclo destructive procedures in refractory glaucoma, extraction of fragments within the vitreous cavity, cataract extraction, cryo destruction of lash follicles for trichiasis and treatment of retinopathy of prematurity (ROP).
Prescription Use _ V__________________________________________________________________________________________________________________________________________________________
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE OF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)