This article was generated by AI. Labelled in accordance with Article 50 of the EU AI Act. Responsible for publication: Sophera Consulting.
To automate implant ordering in a hospital, you let an agent read what the operating room just documented, deduct it from stock, compare what is left with the surgical schedule and draft the reorder. Your OR coordinator then sees only the gaps and approves the order.
The expensive moment is a missing size on the day of surgery, and it usually starts hours earlier, in the delay between the procedure and the stock entry. Until that entry is made, your materials system lists implants that have already left the cabinet. A minimum stock level can't fix this, because it knows nothing about yesterday's case or tomorrow's.
The example below is constructed and does not describe a client. Automated ordering of implants and endoprostheses is, however, among the projects we carry out for clients. Our overview of hospital process automation sets out the wider picture. This article stays with the hours after surgery.
How to automate implant ordering: one knee replacement, start to finish
Say a hospital performs knee and hip replacements on three days a week. The knee system sits in consignment stock, meaning the manufacturer keeps inventory on site: the implants are in a cabinet next to the OR, but they belong to the manufacturer until the hospital uses them. Two of each size are on the shelf.
Tuesday's patient is planned for a size 5 femoral component. During surgery, size 4 turns out to fit, and the insert, the plastic bearing, has to be 12 millimeters thick instead of 10. By then the 10 mm insert has been opened and can't go back on the shelf. Thursday's schedule has two more knees, both planned at size 4. One size 4 is left in the cabinet.
What does the agent do after surgery?
It works through five steps until the cabinet, the materials system and the surgical schedule agree.
1. Read what was used
Each package label gets scanned or stuck onto the sheet and ends up in the OR record. The agent reads item, size and serial number from there. If a label only exists as a photo, it reads the photo and flags the entry for a second look.
2. Update the stock
The femoral component, the tibial component and the 12 mm insert come off the books as used. The 10 mm insert is recorded as opened but not implanted. Whether the manufacturer bills for it depends on the consignment agreement, so it lands on purchasing's list with a note.
3. Compare stock with the schedule
Here a minimum level has nothing to offer. The house rule in our example says the planned size plus one size either side must be in the building for every case. Thursday therefore needs two of size 4 and one each of sizes 3 and 5, which leaves the hospital one size 4 short. The agent also checks sterile expiry dates. If a hip component will expire before the schedule calls for it, the agent proposes an exchange with the manufacturer.
4. Draft the reorder
The agent prepares the order through whatever channel the manufacturer uses, portal or email: replacements for what was used, marked "needed Thursday, first case". The usage report with serial numbers goes with it. Neither contains patient data. The manufacturer only learns item, size and quantity.
5. Approval and the morning list
Your OR coordinator sees the draft with its reasoning and approves it. If the manufacturer hasn't confirmed delivery by Wednesday noon, the agent raises a flag. Each morning a list shows, case by case, whether the material is complete or what is still outstanding.
Can reorders run without approval?
Yes, if you want them to. Up to level 3, a person makes the important decisions and the system prepares them. From level 4, the system decides for itself. Replacing a used implant in consignment stock suits level 4 well, since item, quantity and supplier are all known. Rush orders, new sizes and anything that changes a house rule stay with your staff.
Does this help with Germany's implant registry?
Yes. Since January 2025, German hospitals have had to report hip and knee replacements to the Implantateregister Deutschland, the national implant registry. The serial numbers the agent reads for the reorder are already checked and in the system when that report and the patient's implant card come due, so nobody copies the same number twice.
What do you need to provide?
Access to the OR record, the surgical schedule and the materials system, your consignment agreements, and one person from OR coordination who knows the house rules. The schedule and the OR record contain patient information, so the agent runs either on European infrastructure or with the model on your own hardware, in which case the data never leaves the building. We explain the options in our article on GDPR-compliant agents in hospitals. We bring the data processing agreement, and we clarify any impact assessment or staff council involvement with you beforehand.
Sophera Consulting builds this agent for hospitals at a fixed price, without a subscription. It takes one to two days to set up, and the test with real cases runs that same week. A maintenance agent is included in the fixed price. Our free automation check settles which implant system to start with and which access we need.
Our advice: start with one implant system
Pick the system with the most cases and count the cabinet against the materials system once before you begin. The difference is your starting figure. From then on, track two numbers: how often the agent's stock matches the cabinet, and how often your coordinator changes a draft. When both look right, add the next system and decide whether level 4 is for you. Should medication ordering be next on your list, it reuses the same access to your materials system.
This article was created with the help of AI.
