Title:
STYLET FOR BIOPSY NEEDLE
Document Type and Number:
Japanese Patent JP3198375
Kind Code:
B2
Abstract:
PURPOSE: To improve the efficiency of the surgical treatment, by arranging to hold tissue in place in relation to a particular resected groove, cut a sample, and make up for the groove with it, during the proceeding of a resecting cannula over the groove.
CONSTITUTION: A probe 10A contained in the tubelike interior of the stylet for a biopsy needle so that it can slide and rotate has a groove 32 with a bottom wall 34 having a border on the both sides extending along the axial line A; and an end wall 38 and a base end wall 40 are formed on the surface inclining at the acute angle (a = about 45°) to the bottom wall 34. And the probe 10A is combined with a tubelike inner resecting cannula 42 and a tubelike outer cannula 44; and the probe 10A and the cannula 44 are sustained so as to make a rotational displacement relatively in the axial direction. The inner resecting cannula 42 has an end section 46 with a tapered end resecting edge 48 including a resecting tip 50 at the end of the resecting cannula; on the other hand, the outer cannula 44 has an end section 52 including a tapered end 54.
Inventors:
John Earl Haga
Application Number:
JP3276895A
Publication Date:
August 13, 2001
Filing Date:
January 12, 1995
Export Citation:
Assignee:
John Earl Haga
International Classes:
A61B10/02; A61B10/00; A61B16/00; A61B17/22; A61B17/34; (IPC1-7): A61B10/00
Domestic Patent References:
| JP50100882A | ||||
| JP4888691U |
Foreign References:
| GB1393068A | ||||
| US5127419A |
Other References:
【文献】米国特許5127419(US,A)
【文献】英国公開1393068(GB,A)
【文献】英国公開1393068(GB,A)
Attorney, Agent or Firm:
Takehiko Saitoh