# K991090: Peachtree Proportional Head Control Unit (PHC-3)

- Pathway: 510(k) (Traditional)
- Applicant: Dynamic Systems, Inc.
- Decided: Sep 24, 1999 after 176 days
- Product code: ITI (Wheelchair, Powered)
- Device class: 2
- Regulation: 21 CFR 890.3860
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 1 generation back to K880364 (1988). 4 ancestors in all.
No later device cites it as a predicate yet.
0 of 5 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K972147: Peachtree Proportional Head Control Unit (PHC-2), Dynamic Systems, Inc. (1997) Summary page 1.
- K914737: Asl Model #104, Adaptive Switch Laboratories, Inc. (1992) Summary page 1.
- K940972: Model MCC - Mkiv Micro Computer Controls, Invacare Corp. (1994) Summary page 1.
- K880364: Model #1555 Remote Joystick, Invacare Corp. (1988) Summary page 1.

## Indications for use
The Peachtree Proportional Head Control model PHC-3 is intended to offer persons restricted to a seated position the ability to operate a powered wheelchair by three different methods. The first is & non-contact, fully proportional head movement commanded driving control. The next is controlied by a series of blowing and inhaling into a straw. This allows for four way directional control of the wheelchair. The last driving method uses a combination of the two previous drive controls, The user would tilt their had laterally to move the wheelchair left or right and blow or inhale into the straw to control forward/reverse direction/speed. At current the PHC-3 has only been made to be compatible with Invacare's MKIV series of electronics and Dynamic Controls DX series of electronics.

Source page: https://510kreport.com/device/K991090
Methodology: https://510kreport.com/methodology