# K936115: Cat-600 Penile Plethysmograph

- Pathway: 510(k) (Traditional)
- Applicant: Farrall Instruments, Inc.
- Decided: Jan 10, 1995 after 690 days
- Product code: LIL (Monitor, Penile Tumescence)
- Device class: U
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
2 later devices descend from it; 1 cites it directly.
0 of 3 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- None. FDA lists a 510(k) statement for it but has not posted the file, so its predicates are not known.

## Most influential descendants
- K033126: Monarch 21 Penile Plethysmograph System (2003), 1 descendant of its own
- K052929: Preftest Professional Suite (2006), 0 descendants of its own

Source page: https://510kreport.com/device/K936115
Methodology: https://510kreport.com/methodology