Supply Intelligence: Surgical Instrument Tracking and Tray Optimization
Vetro identifies and tracks instrument use during surgery, without tagging instruments or adding steps for the team. It records which instruments each case actually uses, and which cycle through sterile processing untouched.
That data is what tray decisions have usually lacked. Published studies put instrument utilization between 13% and 22%, but measuring it has meant manual observation or tagging every instrument, so most trays are configured from tradition instead. Vetro produces the same evidence continuously, as part of understanding the case.
Instrument tracking is one capability on a broader platform. Vetro is a 3D-native, context-aware operating-room intelligence platform, designed as an extra pair of hands for perioperative teams.
Why hospitals do not know which instruments get used
Trays are configured by tradition and worst-case thinking, so every case drags a long tail of untouched instruments through decontamination, inspection, packing, and sterilization. Sterile processing pays for it in workload, the operating room pays for it in weight, clutter, and count time.
The cost is not really in the instruments. It is in everything built around them. Every instrument on a tray, used or not, has to be purchased, transported, decontaminated, inspected, packed, sterilized, stored, and returned to the room. That work is staffed by people and run on capital equipment: washers, sterilizers, and packing capacity that represent significant capital investment. Hospitals size all of it to the number of instruments they process, not the number they use.
So the waste sits in the places least visible from the operating room. Processing a single instrument costs roughly $0.34 to $0.47 in a tray, and $0.81 to $0.84 peel-packed: trivial on its own, and substantial once multiplied by every untouched instrument in every tray in every case. Because that cost is paid every time the tray cycles, an instrument used in one case out of ten effectively costs ten times its reprocessing cost each time it is actually needed. The same multiplication sets sterile processing staffing levels, sterilization capacity, and instrument purchasing and replacement budgets.
Our own measurements point the same way. In a study we ran with one hospital, 30% to 40% of the instruments on their trays were never touched in any case we observed. Across roughly 14 operating rooms, the handling and reprocessing cost attached to those instruments was running at approximately $1 million a month, and the hospital was able to reduce it once they could see it.
That is why the problem persists. Trimming a tray without evidence risks the one case where the instrument is needed, so the safe answer is to change nothing. Getting that evidence has meant running a project: a hospital-wide effort across surgeons, sterile processing, and supply chain, taking months and hundreds of staff hours of manual observation to produce a defensible answer. Then the answer ages, because preference cards change, surgeons join and leave, and procedures evolve. Vetro turns that project into a running log, so the utilization evidence is there whenever someone asks, for any tray, without anyone counting.
The people carrying it are sterile processing leaders absorbing the workload, perioperative directors who own operating room efficiency, and supply chain teams buying and replacing instruments that may never be used.
How surgical instrument tracking works
Instrument tracking runs on the same understanding of the room that powers stage detection. Nothing is tagged, nothing is scanned, and the team works exactly as it did before.
- Start from the hospital's own tray definition. Vetro integrates with preference card software to pull the defined tray for each case, so utilization is reported against the instrument list the hospital actually uses rather than a generic one.
- Identify. Vetro recognizes instruments in the sterile field as part of the room's live 3D model. No tags, no barcodes, and no scanning steps.
- Track use. Vetro distinguishes instruments that are actually used from those that are opened but never touched, case by case. Both measures matter: an instrument used in one case out of twenty is used at tray level and idle in the other nineteen.
- Report. Utilization data accumulates across cases, surgeons, and procedure types, so sterile processing and perioperative leaders have an evidence base for tray configuration rather than a one-off audit.
Instrument tracking is the first capability in what we call Supply Intelligence: Vetro's view of the physical side of the case, covering which instruments are used, which are opened but untouched, and over time which materials and implants are consumed. It comes from the same spatial understanding that powers stage detection, rather than from tags, scans, or manual counts.
What changes for sterile processing and the OR
Instrument data changes the conversation more than it changes the work. Nobody does anything differently during a case; what changes is that tray decisions can be made from evidence instead of caution.
- Sterile processing: Reprocessing volume falls as trays come to reflect actual use, and every rationalization conversation with a surgeon starts from that service's own data rather than a general argument about waste.
- Surgeons: Tray changes are proposed from evidence drawn from their own cases, not imposed by policy, and anything they genuinely use stays.
- OR teams: Lighter trays, less clutter, and faster setup and counts, with fewer instruments to lay out and account for at the end of a case.
- Supply chain and finance: A measurable line on instrument purchasing, replacement, and reprocessing, and a defensible basis for sizing sterile processing capacity rather than sizing it to the tray as configured.
The trays that result are the ones each service actually uses. That is the point: not smaller trays for their own sake, but trays that match the work, sized from evidence that stays current.
Trust, control, and what the data is not used for
Instrument data describes trays, not the people using them. The principles below set out how that data is used, who makes the decisions it informs, and what does not change.
- Vetro tracks the process, not people. Instrument data describes what was used in a case. Vetro does not track individual performance metrics of any sort, and no one is scored, ranked, or compared.
- The team can always step in. Where staff disagree with what was recorded as used or untouched, they can correct it, and the correction is what stands.
- Tray decisions stay with the hospital. Vetro supplies the evidence. What comes off a tray, and whether anything comes off at all, remains a clinical and operational decision made by surgeons, sterile processing, and the hospital's own governance.
- Counts and safety processes are unchanged. Instrument tracking is decision support for tray configuration. It does not replace surgical counts or any established safety protocol.
- Identifiable video is never stored. Recognizable detail is removed automatically as the case is observed, and the original footage is deleted immediately, with no way to recover it. Processing happens on servers inside the hospital.
The output is a picture of the trays, not of the team.
Frequently asked questions about instrument tracking and tray optimization
Do instruments need tags or barcodes?
No. Identification comes from the same spatial understanding that powers surgical stage tracking, so nothing is tagged, scanned, or handled differently.
Can this replace surgical counts?
No. Established count and safety protocols stay in place. Vetro adds decision support for tray configuration; it does not replace safety processes.
How granular is the data?
Utilization by instrument, tray, case, procedure type, and surgeon preference card. Because Vetro pulls the defined tray from preference card software, utilization is reported against the hospital's own configuration.
What does sterile processing get?
A running record of which instruments cycle unused, by tray and by service line, so rationalization is grounded in real usage rather than a point-in-time audit.
Does this add any steps in the OR?
No. Capture is ambient, and the team works exactly as before.
How is “used” defined?
An instrument counts as used when it is handled during the case. Vetro reports both measures that matter for tray decisions: instruments used in a given case, and instruments never touched in any observed case. The second is the stricter test and the one that identifies candidates for removal.
How long before the data is usable?
Utilization is only meaningful across enough cases to represent a service line's real mix, so the useful output is a trend rather than a single case. Because capture is continuous, that evidence keeps building instead of expiring when a review ends.
What about instruments used rarely but critically?
They stay. Rarely used is not the same as unnecessary, which is why Vetro reports frequency rather than a keep-or-cut verdict. The decision remains with the surgeons and sterile processing team.
