Five-bevel cannula for blood acquisition devices

• Main Authors: ATTRI RAVI, YOO BO YON LILLIAN, WOO MATTHEW SIANG SI, NAIR ARUN U
• Format: Patent
• Language: Chinese; English
• Published: 27.03.2018
• Subjects: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

A needle including a cannula having a multi-beveled point is disclosed. The multi-beveled point includes a primary bevel, two middle bevels, and two tip bevels. Each of the middle bevels extends between the primary bevel and one of the tip bevels. The primary bevel is provided on the cannula at a first angle of inclination and a first angle of rotation, the two middle bevels are provided on the cannula at a second angle of inclination and a second angle of rotation, and the two tip bevels are provided on the cannula at a third angle of inclination and a third angle of rotation. The third angleof inclination is greater than the second angle of inclination, the second angle of inclination is greater than the first angle of inclination, and the second angle of rotation is equal to the thirdangle of rotation. 本发明公开了种针，所述针包括插管，所述插管具有多斜面尖端。所述多斜面尖端包括主斜面、两个中间斜面以及两个末端斜面。每个中间斜面在主斜面和个末端斜面之间延伸。主斜面以第倾斜角度和第旋转角度而被设置在插管上，两个中间斜面以第二倾斜角度和第二旋转角度而被设置在插管上，并且两个末端斜面以第三倾斜角度和第三旋转角度而被设置在插管上。第三倾斜角度大于第二倾斜角度，第二倾斜角度大于第倾斜角度，并且第二旋转角度等于第三旋转角度