Quick facts
- A vitrectomy instrument is a powered cutter that removes the vitreous gel from the eye, and it is used in retinal surgery.
- United States: the instrument is reached as a vitreous aspiration and cutting instrument at 21 CFR 886.4150, placed in Class II; the openFDA classification API lists the powered cutter under product code MLZ and the vitrectomy kit under QDY.
- Canada: the instrument is a surgically invasive device that enters the eye, so it reaches Class II through Rule 1(1) of Schedule 1 to the Medical Devices Regulations, SOR/98-282; a powered cutter that administers or withdraws energy is also an active device at Class II under Rule 9(1).
- The two countries land on the same class for the same instrument: Class II in both, because the cutter enters the eye.
- The single-use cutter, the tubing and the cassette are supplied as a set, and the set is what a retina service reorders rather than the handpiece alone.
- The entry and rule text below were checked against the current CFR text and the Regulations on 2026-10-08.
A vitrectomy instrument is the cutter at the end of the console, and it is the one ophthalmic instrument that has to be sharp enough to cut vitreous and smooth enough not to pull on retina. It is bought as part of a disposable pack rather than as a standalone object, and it is filed twice over: once as a device that penetrates the eye and once, on the powered side, as a device that delivers energy. This article sets out what the cutter does, how each country files it, and what a retina service should be able to point at when the pack is opened and when the console is serviced.
What does a vitrectomy instrument do?
The cutter is a hollow needle with a reciprocating inner blade that shears vitreous and draws it through a port. The surgeon works through a small sclerotomy, and the same console supplies the infusion that keeps the eye formed and the aspiration that removes the tissue. The port size, the cut rate and the duty cycle are the three settings that decide how the blade behaves at the retina.
Because the cutter enters the eye, and because the powered console withdraws tissue from the body, the instrument sits under a rule for an invasive device and under a rule for an active device at the same time. That double exposure is the reason the class is set by the point where the instrument meets the patient rather than by the box on the trolley.
How does the United States file a vitrectomy instrument?
In the United States the instrument is reached by a named entry. 21 CFR 886.4150 covers a vitreous aspiration and cutting instrument, and the section places it in Class II. The openFDA classification API lists the powered cutter under product code MLZ at Class II and a procedure set under QDY. A Class II device of this kind reaches the market under general and special controls.
The single-use cutter, the infusion tubing and the collection cassette are ordered together because they are sterile and single use, and the console they attach to is a separate capital item. A service that reconciles the pack against the case record is reconciling a set rather than one article.
Why does Canada reach Class II by rule?
Canada classifies the cutter through the invasive-device rules in Schedule 1. Rule 1(1) puts all surgically invasive devices in Class II. A vitrectomy cutter penetrates the eye to reach the vitreous, so it is surgically invasive and falls to that rule. Rule 1(3) lifts the class to Class III only for a device intended to be absorbed by the body or normally intended to remain in the body for at least 30 consecutive days, which does not describe a cutter removed at the end of the case.
The powered console is reached through a second rule. Rule 9(1) puts an active therapeutic device that administers or withdraws energy to or from the body in Class II, and Rule 9(2) lifts it to Class III where the administration or withdrawal is potentially hazardous. The cutter and the console therefore arrive at the same class by two different rules, and the class does not change because the instrument is powered.
| Item | Canada | United States |
|---|---|---|
| Class | Class II, by Rule 1(1); the powered console by Rule 9(1) | Class II |
| Named entry | No entry names a vitrectomy cutter | 21 CFR 886.4150 |
| Basis of the class | The rule that fits a device that enters the eye | The named entry the instrument is filed under |
| Product code | Not applicable | MLZ; QDY for a procedure set |
| Premarket route | Device licence under section 32 for a Class II device | General and special controls |
| Quality system | CAN/CSA-ISO 13485 certificate behind the licence | Quality system regulation |
| Reprocessing | The maker's instructions for any reusable part | The maker's instructions for any reusable part |
The two countries agree on the class and disagree only on the machinery: the United States names the instrument and Canada reaches it through the invasive and active rules. A retina service that keeps the maker's instructions for the cutter and the service record for the console has the two documents the class implies.
Which standards sit behind the instrument?
The class says how the instrument is regulated; the standards say how it has to behave. ISO 13485:2016 is the quality management basis behind the licence, and ISO 14971:2019 is the risk management basis behind the design file. A retina service that asks for those two documents is asking for the evidence behind the single-use pack.
| Element | What it covers | Why it matters in the theatre |
|---|---|---|
| Port and gauge | The size of the cutting port | A port off its stated size changes how the vitreous flows |
| Cut rate | How often the blade closes | The rate decides whether the cutter pulls or cuts |
| Infusion | The fluid that keeps the eye formed | The eye collapses if the infusion and aspiration do not balance |
| Sterile pack | The pouch and its seal | The pack is what keeps the cutter sterile until it is opened |
| Single-use basis | The maker's limit on re-use | The evidence behind the re-use decision |
| Console service | The maker's maintenance schedule | A console off its schedule changes the cutter's behaviour |
A cutter that arrives outside its stated port and cut rate cannot be reconciled with the case plan, and it should not be opened onto a retinal case.
What does a single-use pack change about the record?
A single-use cutter is reconciled to a case rather than to a cycle. The pack carries the maker, the lot and the use-by date, and the case record carries the patient and the procedure, so the two documents meet in the pack that was opened. A service that keeps only the case record cannot tell one cutter from another, and a service that keeps only the pack cannot tell which case it was opened for.
The reusable part of the instrument follows the opposite path. It is reconciled to a reprocessing cycle and a monitoring result, so the record that proves the cycle was run sits beside the record that proves the cutter was single use. The two records answer different questions, and a retina service that keeps both has the document set the class implies.
What else sits in the retina pack?
The retina pack is assembled as a set. A post-operative eye patch set sits with the dressing lines, and a wall-mount eye wash station is the emergency rinse for the room where instruments are stored. Clinics that monitor their own reprocessing pair the sterilization monitoring collection with the 24-hour biological indicator 50-pack. Multi-site groups ordering at case level use the wholesale ordering page, and the B2B wholesale collection lists the lines held for institutional buyers. Reselling? become a distributor.
Sources
- 21 CFR 886.4150, vitreous aspiration and cutting instrument
- openFDA device classification API
- Medical Devices Regulations, SOR/98-282, full text and Schedule 1
- US FDA, medical devices
- Health Canada, medical devices
- Standards Council of Canada
- CSA Group
- ISO 13485:2016, medical devices quality management
- ISO 14971:2019, risk management of medical devices
- Canadian Association of Optometrists
- College of Optometrists of Ontario
- CCOHS, OSH answers
- American National Standards Institute
- US FDA, contact lenses
A retina service is audited on the paper that follows the pack. The printable instrument and reprocessing log is a blank sheet with columns for the instrument, the case, the cycle, the monitoring result and the operator, so a single-use pack and a reused instrument can be told apart on the same form.
The log generator on the same page sizes the sheet to the number of theatres and cases a service runs, so a day-surgery list and a full retinal list print the form at the volumes they need.
Every service and every console differs. Ask a compliance specialist and you will get a written answer specific to your equipment and province, with the regulation or standard it is based on cited.
Related reading
- Manual ophthalmic surgical instruments in Canada vs the US: which rules
- Intraocular lenses in Canada vs the US: which class
- Eye shields in Canada vs the US: which device rules
CliniEco Medical supplies eye care, laboratory and dental consumables of the kind described in this article. MDEL #35334. This article is written for optometry, laboratory and procurement professionals and is not legal advice; the class of a device and the records kept by a practice belong to the manufacturer and to the requirements that apply to it.
Frequently Asked Questions
Is a vitrectomy instrument a Class II device?
Yes, in both countries. In the United States a vitreous aspiration and cutting instrument is Class II at 21 CFR 886.4150, and in Canada it is Class II by Rule 1(1) of Schedule 1 because it enters the eye.
Does a powered cutter reach a higher class in Canada?
No. The powered console is reached by Rule 9(1) as an active therapeutic device at Class II, and Rule 9(2) lifts it to Class III only where the administration or withdrawal of energy is potentially hazardous. A cutter and its console therefore arrive at Class II by two rules.
Which product code covers the instrument in the United States?
The openFDA classification API lists the vitreous cutter under product code MLZ at 21 CFR 886.4150, and a procedure set under QDY.
Can the cutter be reused?
The maker's instructions for use govern that, and a single-use cutter is supplied sterile for one case. Where any part is reprocessed, the maker's validated instructions are the basis the service should follow.
Do the two countries agree on the class?
Yes. The United States names the instrument at Class II and Canada reaches Class II through the invasive rule, so the class agrees even though the rulebooks differ.
What should a retina service keep with the console?
The maker's maintenance schedule and the record that shows it was followed, because a console off its schedule changes how the cutter behaves at the retina.
What does Rule 1(3) change for an eye device?
It lifts a surgically invasive device to Class III only where it is absorbed by the body or normally intended to remain in the body for at least 30 consecutive days, which does not describe a cutter removed at the end of the case.
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