# K013197: WS-501 Heat Lamp

- Pathway: 510(k) (Traditional)
- Applicant: Lhasa Medical, Inc.
- Decided: Aug 29, 2002 after 338 days
- Product code: ILY (Lamp, Infrared, Therapeutic Heating)
- Device class: 2
- Regulation: 21 CFR 890.5500
- 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 K960036 (1996). 3 ancestors in all.
151 later devices descend from it; 1 cites it directly.
0 of 155 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K954577: WS Frequency Spectrum Effect Physiatrics Apparatus, C.A.I. Industries Corp. (1997) Summary page 2.
- K003538: TDP CQ-27 Heat Lamp, Lhasa Medical, Inc. (2001) Summary page 2.
- K960036: Firard II/ TDP Lamp, Helio Medical Supplies, Inc. (1996) Summary page 2.

## Most influential descendants
- K050397: Velasmooth, Shaper (2005), 150 descendants of its own
- K070092: Modification to Velasmooth, Shaper (2007), 128 descendants of its own
- K071872: Velashape (2007), 127 descendants of its own
- K080300: Cutera Multimodal Cellulite Product (Cmmcd) (2008), 101 descendants of its own
- K053611: Smoothshapes (2006), 95 descendants of its own

## Indications for use
The WS-501 Heat Lamp may be used for the temporary relief of minor muscle and joint pain and stiffness, the temporary relief of minor joint pain associated with arthritis, the temporary increase in local circulation where applied, and the relaxation of muscles. In addition, the WS-501 Heat Lamp may also help muscle spasms, minor sprains and strains, and minor muscular back pain.

Source page: https://510kreport.com/device/K013197
Methodology: https://510kreport.com/methodology