| 释义 |
‖ vectis|ˈvɛktɪs|
[L. vectis lever, crow-bar.]
†1. A lever. Obs.
1648Wilkins Math. Magic i. v. 33 Rather suppose BC, to be a Vectis or Leaver, towards the middle of which is the place of the fulciment. 1674Petty Disc. Dupl. Proportion 119 In the Fuze of a Watch, the greatest strength of the Spring is made to work upon the shortest Vectis.
2. Surg.
a. An obstetrical instrument employed as a lever to free the head of the child.
1790Med. Comm. II. 397 It is now near forty years since an account of the vectis or lever of Roonhuysen was published. 1822–7Good Study Med. (1829) V. 190 If, at the same time, the head be lying clear on the perinæum, the vectis or forceps should be had recourse to. 1841Ramsbotham Obstet. Med. & Surg. 314 Another instrument that has been much employed with the view of extracting the child living, is the vectis or lever. 1881Trans. Obstet. Soc. Lond. XXII. 78, I passed in a vectis, and by its aid as a lever..I brought down the second larger head and left arm.
b. An instrument employed in operations on the eye.
1882Illustr. to Maw's Price-current 77 [Eye instruments.] Vectis, Taylor's. 1891Ibid. 42 Ophthalmoscope lamp, operation scissors,..and vectis. 1895Arnold & Sons' Catal. Surg. Instr. 158 Vectis (Taylor's), for Extraction of Soft Lens. |