Puncture needle for ultrasonic waves
A technology of ultrasound and puncture needles, applied in the field of puncture needles, can solve the problems of unclear ultrasonic images of puncture needles, difficulty in grasping the correct position of puncture needles, and reduced strength
Active Publication Date: 2013-03-27
HAKKO CO LTD
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Problems solved by technology
[0012] However, for conventional puncture needles, ultrasonic waves are reflected by processing the front end, but the angle formed by the irradiation path of ultrasonic waves and the axis of the puncture needle becomes small, especially when it is less than 45°, the ultrasonic echo returned to the ultrasonic probe The intensity of the puncture needle is reduced, resulting in unclear ultrasound images of the puncture needle, making it difficult to grasp the correct position of the puncture needle
Method used
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[0020] figure 1 It shows the puncture needle which concerns on embodiment of this invention. In the figure, (a) is a perspective view, and (b) is a sectional view taken along line A-A of (a).
[0021] The puncture needle for ultrasound (hereinafter referred to as "puncture needle") 1 that is a needle tube is configured to include: a puncture needle body 11 that is a needle tube body made of a thin metal tube such as stainless steel; The outer surface (peripheral surface) of the rectangular mirror 12.
[0022] The puncture needle main body 11 has a sharp point 13 including a front 14 formed by obliquely cutting the front end thereof. The right-angle mirrors 12 are triangular pyramid-shaped depressions provided on the surface of the puncture needle body 11 in the vicinity of the sharp point 13 , and are formed in three rows at predetermined intervals in the circumferential direction of the puncture needle body 11 . Eight right-angle mirrors 12 are formed in each column at int...
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The invention provides a puncture needle, which can clearly form images even though an angle between the puncture needle and the irradiation direction of detection waves, such as ultrasonic waves and the like, of an ultrasonic probe is relatively smaller. According to one embodiment, the puncture needle (1) for the ultrasonic waves performs puncturing at the same time of observing a puncture state through ultrasonic images; and in the puncture needle (1), the front end of a puncture needle body (11) is provided with a needle point (13), and at least one corner-cube reflector (12) is arranged at a given position of the puncture needle body (11) by a triangular pyramidal pit. The ultrasonic waves oscillated from the ultrasonic probe are reflected by the corner-cube reflector (12) to return to the ultrasonic probe, so the reflected waves face the direction the same as the incident direction of the ultrasonic waves and accurately return to the ultrasonic probe even though the angle between the exposure pathway of the ultrasonic waves and the axis of the puncture needle is relatively smaller.
Description
[0001] This application is a divisional application for filing date: July 25, 2005, application number: 200580051150.4, and invention name: puncture needle for ultrasonic waves. technical field [0002] The present invention relates to a puncture needle for medical use, in particular to a puncture needle used under ultrasonic images. Background technique [0003] In the medical field, puncture needles (biopsy needles, insulated electrode injection needles) are used, for example, to collect tissue or cells from a part of the human body for diagnosis of lesion, or to accurately locate nerves. At this time, it is necessary to accurately grasp the position of the puncture needle, especially the position of the distal end. Therefore, using an ultrasonic diagnostic device, such as a biopsy needle, the puncture is performed while confirming the ultrasonic echo from the distal end of the puncture needle under the image, so as to accurately grasp the position of the puncture needle. ...
Claims
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IPC IPC(8): A61B17/34A61B10/02A61B8/00
Inventor 丸山胜北川四郎小松正义
Owner HAKKO CO LTD