---
kind: "section"
citation: "21 C.F.R. § 882.4305"
title: "21"
number: "882.4305"
heading: "Powered compound cranial drills, burrs, trephines, and their accessories."
url: "https://uscodex.org/cfr/21/882.4305"
---

# §882.4305. Powered compound cranial drills, burrs, trephines, and their accessories.

- (a) **Identification.** Powered compound cranial drills, burrs, trephines, and their accessories are bone cutting and drilling instruments used on a patient's skull. The instruments employ a clutch mechanism to disengage the tip of the instrument after penetrating the skull to prevent plunging of the tip into the brain.
- (b) **Classification.** Class II (performance standards).

## Notes

### Authority

Authority: 21 U.S.C. 351, 360, 360c, 360e, 360j, 360 l, 371.

### Source

Source: 44 FR 51730, Sept. 4, 1979, unless otherwise noted.