Puncture apparatus

摘要

A puncture apparatus includes a puncture needle for puncturing living body tissue, an axial portion, a puncture member including an interlock portion interlocking the puncture needle and the axial portion, an elongated urethral-insertion member insertable into the urethra, an elongated vaginal-insertion member insertable into the vagina; and a supporting member supporting the puncture member, the urethral-insertion member and the vaginal-insertion member. The distal end of the puncture needle includes a sharp needle tip, and the needle is bent in an arc shape centered on the axial portion. The axial portion is freely rotatable on the supporting member, and the supporting member restricts the positional relation between the puncture member and the urethral-insertion member such that when the puncture member rotates and punctures the living body tissue, the needle tip passes a far-position side from the center of the puncture needle compared with the urethral-insertion member or an extended line of such member.

主权项

1. A puncture apparatus comprising:
a supporting member; a puncture member rotatably mounted on the supporting member to rotate about a rotation center, the puncture member possessing a distal end portion, at least a portion of the rotatable puncture member being bent or curved, the distal end portion of the puncture member constituting a needle tip which rotates together with the puncture member and is configured to puncture living body tissue as the puncture member is rotated about the rotation center; a vaginal-insertion assembly positionable in a vagina to assist in properly locating the puncture member, the vaginal-insertion assembly comprising a vaginal-insertion member and an inserter; the inserter possessing a distal-most end portion that is positionable in the vagina, and the vaginal-insertion member possessing a distal-most end portion; the inserter being configured to cover at least the distal-most end portion of the vaginal-insertion member to guide the distal-most end portion of the vaginal-insertion member into an opening of the vagina after the inserter is positioned in the vagina; and the distal-most end portion of the inserter possessing an outer dimension, and the distal-most end portion of the vaginal-insertion member possessing an outer dimension, the outer dimension of the distal-most end portion of the inserter being less than the outer dimension of the distal-most end portion of the vaginal-insertion member.