Work-in-Progress Cart

What Is a Work-in-Progress (WIP) Cart?

A Work-in-Progress (WIP) cart is a mobile storage unit used to organize and transport surgical instrument trays or supplies that are currently undergoing reprocessing or are mid-cycle in a surgical workflow. These carts help sterile processing and operating room teams keep track of items that are not yet ready for use but are actively moving through cleaning, assembly, sterilization, or case preparation steps.

WIP carts are essential in busy hospitals where dozens—or even hundreds—of trays circulate each day between the OR and the Sterile Processing Department (SPD).

Why Is a WIP Cart Important in Surgical Operations?

In high-volume surgical environments, efficient instrument flow is critical to case readiness and patient safety. WIP carts improve efficiency by giving staff a standardized, visual way to stage, move, and track instrument trays and surgical supplies as they move through various processing checkpoints.

Without a dedicated WIP system, trays may become lost, delayed, or mixed up—leading to surgical delays, missing instruments, or workflow disruptions. WIP carts help reduce these risks by providing a clearly designated space for in-process items, minimizing miscommunication and manual handoffs.

Hospitals often pair WIP carts with instrument tracking systems, barcode scanners, and workflow automation software to log each step, capture timestamps, and provide real-time visibility. These tools integrate with EHR and ERP platforms, enabling teams to monitor tray status and anticipate bottlenecks.

By standardizing how in-progress instruments are handled, WIP carts support consistent throughput, faster tray turnaround, and improved surgical performance.

Quick Facts

• Organizes instrument trays or supplies mid-cycle in surgical workflows
• Common in SPD, OR, and high-volume reprocessing environments
• Enhances efficiency, communication, and tray visibility
• Often integrated with EHR, ERP, and tracking systems
• Supports case readiness and infection prevention