US 5,966,763 · Granted 1999-10-19
The Beanbag Breakthrough That Cradles Surgical Patients
Imagine a high-tech beanbag pillow that molds itself perfectly around your body during surgery. This patent describes a clever layered pad system—with beads on top and an inflatable bladder underneath—that automatically adjusts to support each patient's unique shape while keeping them safely in place on the operating table.
The plain-English version
What it protects
The claim covers a surgical table pad made of three key parts working together: an outer cover with a patient-facing surface, a vacuum bead bag containing compressible beads separated into upper and lower layers by a flexible membrane, and an inflatable bladder positioned underneath. What's protected is the specific way these layers interact—when the bladder inflates, it pushes the bead bag upward to conform snugly around the patient's body. The innovation is in how the membrane between the bead layers, combined with the pressurized bladder below, creates customized support without the patient shifting during surgery.
Why it matters
Patient positioning during surgery is critical for both safety and surgical access. A pad that automatically conforms to each patient's shape reduces the risk of pressure injuries, improves stability, and eliminates the need for manual adjustments during delicate procedures. Hill-Rom's patent locks down a practical solution to a real operating-room problem—one that affects patient outcomes and surgeon confidence. By combining proven materials (beads, flexible membranes, inflatable bladders) in a novel configuration, the patent creates a durable competitive advantage in surgical furniture, a market where equipment reliability directly impacts hospital purchasing decisions.
Real-world use
Every time a patient lies down on a modern operating table during surgery, they may be resting on a pad system descended from this technology—one that automatically molds to their body and keeps them stable while surgeons work.
Original USPTO abstract
A surface pad system for a surgical table includes a cover having an upwardly-facing patient-support surface defining an interior region of the surface pad system, and a vacuum bead bag received in the interior region. The vacuum bead bag includes a flexible cover defining an interior region containing compressible beads including a lower layer of compressible beads and an upper layer of compressible bead separated from the lower layer of compressible beads by a membrane made from a flexible material. The system also includes a bladder received in the interior region of the cover and positioned to lie beneath the vacuum bead bag. The bladder defines an interior region and is inflatable when pressurized fluid is received in the interior region of the bladder so that the vacuum bead bag conformingly engages the patient on the patient-support surface when the bladder is inflated.
Patent details
- Publication number
- US 5,966,763
- Filing date
- 1996-08-02
- Grant date
- 1999-10-19
- Assignee
- Hill-Rom, Inc.
- Inventor(s)
- THOMAS; JAMES MILTON CHERRY, NOVACK; ROBERT C., CALDWELL; KARL NORMAN, BOBEY; JOHN ALAN, REPIK; MARLA DUKES
- CPC class
- A47C27/086
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