Tuohy needle
This article includes a list of general references, but it lacks sufficient corresponding inline citations. (May 2013) |
Uses | Drug delivery |
---|---|
Related items | Hypodermic needle |
A Tuohy (/tOO-ee/) needle is a hollow
Epidural needle
Literally, an
Epidural needles are designed with a curved tip to help prevent puncture of the dural membrane. But following accidental dural puncture, headache occurs in up to 85% of patients causing significant perioperative morbidity.[1] However, in case of inadvertent dural perforation, the incidence of headache can be lowered by identifying the epidural space with the needle bevel oriented parallel to the longitudinal dural fibers which limits the size of the subsequent dural tear.[2]
Types
Types of epidural needles include:[3]
- The Crawford Needle
- The Tuohy Needle
- The Hustead Needle
- The Weiss Needle
- The Sprotte Spezial Needle
- Other Epidural Needles : Other less popular types are the Wagner needle (1957), the Cheng needle(1958), the Crawley needle (1968), the Foldes needle (1973), and the Bell needle (1975)—all variants of the Huber design with a blunted tip of varying sharpness.
- Variants like the Brace needle, a Crawford variant; the Lutz epidural needle (1963), with a pencil-point design for single-shot epidural use; the Scott needle (1985), a Tuohy needle with a Luer lock hub; and the Eldor needle (1993), designed for use with combined spinal epidural anesthesia.
History
Though Ralph L. Huber (1915–2006), a Seattle dentist, was the inventor of this needle in 1940, it is known in the name of Edward Boyce Tuohy (1908–1959), a 20th-century U.S anesthesiologist who first popularized it in 1945.[4]
References
Further reading
- "The Evolution of Spinal and Epidural Needles : From the Origins to the Current". Cothon.Net.
- Frölich, MA; Caton, D (July 2001). "Pioneers in epidural needle design". Anesthesia and Analgesia. 93 (1): 215–20. PMID 11429369.