| needle culture | A culture produced by inserting an inoculating needle with inoculum down the centre of a solid medium contained in a test tube. Synonym: needle culture. (05 Mar 2000) |
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| needle-exchange programs | Organised services for exchange of sterile needles and syringes used for injections as a potential means of reducing the transmission of infectious diseases. (12 Dec 1998) |
| needle forceps | An instrument for grasping a needle in suturing. Synonym: needle forceps. (05 Mar 2000) |
| needle-holder | An instrument for grasping a needle in suturing. Synonym: needle forceps. (05 Mar 2000) |
| needle point tracing | A tracing of mandibular movements made by means of a device attached to the opposing arches; its shape resembles that of an arrowhead or a Gothic arch, and when the instrument's marking point is at the apex of the arch, the jaws are considered to be in centric relation. Synonym: arrow point tracing, Gothic arch tracing, Gothic arch, stylus tracing. (05 Mar 2000) |
| needle sharing | Usage of a single needle among two or more people for injecting drugs. Needle sharing is a high-risk behaviour for contracting infectious disease. (12 Dec 1998) |
| stereotactic needle biopsy | Biopsy done while breast is compressed under mammography. A series of pictures locate the lesion, and a radiologist enters information into a computer. The computer calculates information and positions a needle to remove the finding. A needle is inserted into the lump, and a piece of tissue is removed and sent to the lab for analysis. May be referred to as mammotest or core biopsy. (09 Oct 1997) |
| stop-needle | A surgical needle, with the eye at the tip, the shank of which has a projecting shelf to arrest the needle when it has passed the desired distance through the tissues. (05 Mar 2000) |
| Deschamps needle | A needle with a long shaft for passing sutures in the deep tissues. (05 Mar 2000) |
| devil's darning-needle | <zoology> A dragon fly. See Darning needle, under Darn. Source: Websters Dictionary (01 Mar 1998) |
| touch-needle | <chemistry> A small bar of gold and silver, either pure, or alloyed in some known proportion with copper, for trying the purity of articles of gold or silver by comparison of the streaks made by the article and the bar on a touchstone. Source: Websters Dictionary (01 Mar 1998) |
| Emmet's needle | <instrument, surgery> A strong needle with the eye in the point, having a wide curve, and set in a handle, used to pass a ligature around an undissected structure. (05 Mar 2000) |
| Tuohy needle | A needle with a lateral opening at the distal end, designed to cause a catheter passing through the needle's lumen to exit laterally at a 45 |
| exploring needle | A strong needle with a longitudinal groove, which is thrust into a tumour or cavity to determine the presence of fluid, the latter escaping externally along the groove. (05 Mar 2000) |
| knife needle | A very narrow, needle-pointed knife used in discission of a cataract. Synonym: cataract needle. (05 Mar 2000) |