US 12,121,213 B2
Endoscope aid and endoscope
Yoshihiro Ueda, Kanagawa (JP); Nobuyuki Torisawa, Kanagawa (JP); and Shozo Iyama, Kanagawa (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Nov. 27, 2020, as Appl. No. 17/105,631.
Application 17/105,631 is a continuation of application No. PCT/JP2019/024907, filed on Jun. 24, 2019.
Claims priority of application No. 2018-136170 (JP), filed on Jul. 19, 2018.
Prior Publication US 2021/0076909 A1, Mar. 18, 2021
Int. Cl. A61B 1/00 (2006.01); A61B 1/005 (2006.01); A61B 1/018 (2006.01)
CPC A61B 1/0055 (2013.01) [A61B 1/00101 (2013.01); A61B 1/0014 (2013.01); A61B 1/018 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An endoscope aid to be attachably and detachably attached to a treatment tool insertion channel of an endoscope, the endoscope aid comprising:
a tubular member capable of being fixed to an outlet portion of the treatment tool insertion channel in a state where the tubular member is fitted inside the outlet portion of the treatment tool insertion channel that is kept in the shape of a straight pipe regardless of bending of a bending part of the endoscope,
wherein when the tubular member is fixed to the outlet portion of the treatment tool insertion channel, a proximal end of the tubular member located on a side opposite to an outlet side of the treatment tool insertion channel is disposed closer to the outlet side of the treatment tool insertion channel than a proximal end of the bending part of the endoscope,
wherein an inner peripheral surface of the tubular member on the proximal end side is formed in a tapered shape in which a diameter is gradually reduced toward a distal end side,
wherein the outlet portion comprises a through-hole, and an entire diameter of the through-hole in an axial direction is constant,
wherein a distal end of a channel tube of the treatment tool insertion channel is fitted to the outlet portion, and the channel tube has an external diameter less than that of the outlet portion,
wherein when the entire tubular member is fitted inside the through-hole, a proximal end of the outlet portion is disposed between the proximal end of the bending part and the proximal end of the tubular member, and the distal end of the channel tube is disposed between the proximal end of the outlet portion and the proximal end of the tubular member,
wherein the tubular member is spaced apart from the channel tube by a gap therebetween.