Abstract: The invention relates to a magnetic-navigation joint type puncture needle which comprises a head section and needle sections, wherein, the head section is made of stainless steel material with high magnetic conductivity and is connected with the following needle sections coaxially mounted with the head section through a flexible joint; two needle sections are also coaxially connected with each other through a flexible joint; the needle sections are made of non-magnetic stainless steel material; the flexible joints adopts serpentine tubes formed by melting and engraving cobalt-chromium alloy through laser; and both the head section and the needle sections can be bent, but the flexibility of the head section and that of the needle sections are smaller than the flexibility of the flexible joints.

Abstract: In some embodiments, a vibration isolator comprises a housing having a base portion and a wall portion. A plurality of bearings are disposed within the housing. The bearings are arranged in a configuration comprising a plurality of layers. A first layer comprises a bearing and a second layer comprises a plurality of bearings. Each bearing in the second layer contacts the wall portion of the housing. Each bearing comprises a plurality of contact points in contact with another portion of the vibration isolator, and no two contact points of a bearing are diametrically opposed.

Abstract: In some embodiments, a vibration isolator comprises a housing having a base portion and a wall portion. A plurality of bearings are disposed within the housing. The bearings are arranged in a configuration comprising a plurality of layers. A first layer comprises a bearing and a second layer comprises a plurality of bearings. Each bearing in the second layer contacts the wall portion of the housing. Each bearing comprises a plurality of contact points in contact with another portion of the vibration isolator, and no two contact points of a bearing are diametrically opposed.

Abstract: In some embodiments, a vibration isolator comprises a housing having a base portion and a wall portion. A plurality of bearings are disposed within the housing. The bearings are arranged in a configuration comprising a plurality of layers. A first layer comprises a bearing and a second layer comprises a plurality of bearings. Each bearing in the second layer contacts the wall portion of the housing. Each bearing comprises a plurality of contact points in contact with another portion of the vibration isolator, and no two contact points of a bearing are diametrically opposed.