| epidural meningitis | Inflammation of the outer surface of the dura mater. Synonym: epidural meningitis, external meningitis. (05 Mar 2000) |
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| epidural neoplasms | Neoplasms located in the epidural space, at or above the dura mater of the spinal cord. (12 Dec 1998) |
| epidural space | Space between the dura mater and the walls of the vertebral canal. (12 Dec 1998) |
| fractional epidural anaesthesia | Insertion of a catheter into the lumbar or caudal epidural space for the repeated injection of local anaesthetic solutions as a means of prolonging duration of anaesthesia. Synonym: fractional epidural anaesthesia. (05 Mar 2000) |
| artery needle | A blunt-pointed, curved needle, set in a handle, with the eye at the point, used for passing a ligature around an artery. (05 Mar 2000) |
| aspirating needle | A hollow needle used for withdrawing fluid from a cavity, when combined with an aspirator tube attached to one end. (05 Mar 2000) |
| atraumatic needle | An eyeless surgical needle with the suture permanently fastened into a hollow end. (05 Mar 2000) |
| biopsy needle | <equipment> A skinny needle that is passed percutaneously into an organ being investigated (liver and kidney are common). Tissue is obtained from the core of the needle and then analysed under the microscope. (21 Mar 1998) |
| biopsy, pleural needle | <investigation, procedure, surgery> A pleural needle biopsy involves the use of a needle (inserted from the skin) to obtain a small sample of pleural tissue for microscopic analysis. The biopsy is done using a local anaesthetic. Abnormal results may reveal cancer (metastatic or primary), tuberculosis, a fungal disease, viral disease, a parasitic disease or collagen vascular disease. Risks include pneumothorax and internal bleeding. (21 Mar 1998) |
| Veress needle | A needle equipped with a spring loaded obturator that is used for insufflation of the abdomen in laparoscopic surgery. (05 Mar 2000) |
| Gillmore needle | A device for obtaining the setting time of dental cement. (05 Mar 2000) |
| cataract needle | A very narrow, needle-pointed knife used in discission of a cataract. Synonym: cataract needle. (05 Mar 2000) |
| Vicat needle | <equipment> A device for obtaining the setting time of plaster and other materials. (05 Mar 2000) |
| Millner needle | A fine, non-cutting needle with eye for thread frequently used for suture of skin. (05 Mar 2000) |
| pine-needle oil | A volatile oil distilled with steam from the fresh leaf of Pinus mugo; has been used by inhalation and spray in catarrhal affections of the air passages, and locally in rheumatism; also used as a flavoring and in perfumery. (05 Mar 2000) |