A biomed specialist answers common questions about STERIS sterile processing service contracts, surgical lights, endoscope storage cabinets, surgical catheter storage, and how CPAP machines work.

If you're here because you're about to sign a STERIS sterile processing service contract, or because you're trying to decide on an endoscope storage cabinet, you're already doing more homework than I did when I started in this role.

I've been a biomedical equipment specialist for nine years. In my first year of managing equipment budgets, I signed a service agreement that looked reasonable on paper. A month later, a washer-disinfector packed up and I found out the contract didn't cover emergency repairs. That one mistake cost roughly $1,150 and a very uncomfortable conversation with the surgery center manager.

Here are the questions I get asked most often, plus a couple I wish someone had asked me.

• What does a STERIS sterile processing service contract actually cover?
• Are STERIS surgical lights worth the premium?
• What should I look for in an endoscope storage cabinet?
• How should I store surgical catheters and custom packs?
• How does a CPAP machine work?

What does a STERIS sterile processing service contract actually cover?

The short answer: it depends on which tier you sign. I've worked with contracts that cover only scheduled preventive maintenance, and I've worked with full-coverage agreements that include parts, labor, emergency response, and annual calibration. The difference is not obvious from the first page.

The most frustrating part of these agreements: the exclusions. You'd think a written contract would tell you exactly what's covered, but the definitions vary. For example, a 'door seal' might be considered a wear item in one contract and a part in another. In 2018, I didn't read the wear-item list carefully. When our washer-disinfector door seal failed, the PM plan I'd signed didn't cover it. Emergency call-out was $350, the seal kit was $420, and overtime labor was $380. Total: $1,150. The contract itself was $4,200. There's a reason I now read the "not covered" section first.

My experience is based on about 40 contract reviews across three hospitals and two surgery centers. If you're in a large academic medical center with a customized agreement, your details might differ.

5 minutes of verification beats 5 days of correction.

When I evaluate a STERIS sterile processing service contract now, I check four things: what PMs are included and how often; whether parts and wear items are covered; the response time for emergency service and whether after-hours is billed separately; and the documentation requirements. I also ask for the contract's service history on the specific model. STERIS usually has maintenance records for the equipment if it was serviced by them.

One more thing: for an older unit, I once ran the numbers on skipping a service contract altogether. The upside was about $2,000 a year in savings. The risk was a chamber repair that could hit $9,000 if a crack developed. I kept asking myself if $2,000 was worth that exposure. It wasn't.

Are STERIS surgical lights worth the premium?

Look, I'm not saying every other surgical light is bad. I'm saying that the first time I tried to save money on a surgical light, I didn't actually save anything. The fixture was about $4,000 cheaper than the comparable STERIS quote. Eighteen months later, the LED driver board failed. The replacement quote was almost half the original fixture's cost. By the time we added technician travel and the surgeon's lost schedule, the 'savings' were gone.

What I mean is that acquisition cost and ownership cost are two different budgets. A STERIS surgical light usually costs more upfront. But in an OR that runs 10-12 hours a day, the cost difference per hour of use can become tiny. If the light lasts five years, that $4,000 difference is about $0.32 an hour. That's not much when a surgical suite costs hundreds of dollars per minute to run.

I also look for standards compliance. IEC 60601-2-41 covers basic safety and essential performance for surgical luminaires. If a spec sheet doesn't mention that standard, I ask why. And I make it a point to ask about service access: can a technician replace the LED module without pulling the whole ceiling mount? That question has saved us two full-day shutdowns.

What should I look for in an endoscope storage cabinet?

Start with the scopes you plan to store. Flexible endoscopes need vertical hanging with no sharp bends, enough spacing between scopes, and a cabinet that promotes drying. A cupboard with a door is not necessarily an endoscope storage cabinet. Neither is a transport cart with a cover.

I once hung a flexible scope while the channels still had visible droplets from reprocessing. I was in a hurry, so I closed the door and told myself it would dry. It didn't. The next morning, the channels still felt wet and we had to run a full reprocessing cycle before the scope could be used. That was embarrassing, but it taught me a simple lesson: drying is part of storage, not a step you can skip.

ANSI/AAMI ST91, the standard for flexible and semi-rigid endoscope processing, advises storing scopes in a way that protects them from contamination and allows residual moisture to evaporate. I'm not 100% sure of the exact section number, but the principle is clear. A storage cabinet with filtered air flow and a drying cycle makes that principle easier to maintain.

Also check the cabinet surfaces: stainless steel or smooth plastic is easier to wipe down. Shelves that collect water are a red flag. And if your facility is in a humid area, ask about cabinet ventilation.

How should I store surgical catheters and custom packs?

People tend to worry about endoscopes and forget about surgical catheters. That's a mistake. A sterile surgical catheter is only sterile if the package stays intact. Heat, humidity, compression, and rough handling can all compromise the seal.

I remember auditing a supply room in 2021 and finding a shelf of custom catheter trays directly under a steam line. The pouches had condensation on the inside, and one seal had started to peel. We quarantined the entire lot. It was a $1,800 write-off, and it wasn't the product's fault. It was ours.

Now our monthly storage audit includes catheter trays. I check for package integrity, look at the temperature and humidity logs, and make sure nothing heavy has been stacked on top of the cartons. It takes five minutes. The alternative is discovering a compromised tray when the surgical tech opens it in the middle of a case, which is not a meeting I want to be in.

How does a CPAP machine work?

Okay, this one is not STERIS-specific, but I get asked about it a lot by home-care coordinators and even some surgical teams who use CPAP questions during patient pre-op conversations.

A CPAP machine draws room air through a filter, pressurizes it with an internal blower, and delivers it through a heated humidifier and a tube to a mask. The pressure is set at a level that keeps the upper airway open during sleep. It does not breathe for the patient. The patient still breathes spontaneously; the machine simply prevents the airway from collapsing.

The humidifier is important because pressurized air can dry out the nasal passages. That is why the water chamber, mask, and tubing all need regular cleaning according to the manufacturer's instructions. I won't repeat specific reprocessing steps here, because instructions vary by CPAP brand and model. Follow the IFU that came with the device.

That's the advice I'd give myself back in my first year: ask how the equipment is used, not just what it costs.

What's the biggest mistake people make with service contracts?

Assuming the service contract is the safety net. It's not unless you read it carefully. After my door seal incident, I built a 12-point checklist. We've caught four contract exclusions, two incorrect PM schedules, and a storage room with a bad HVAC diffuser. None of those would have made a dramatic story. But catching them before they became failures is exactly the point.

There's something satisfying about signing a service contract and knowing exactly what's covered, and walking through a supply room and not seeing condensation. It's boring. Boring is good.