US 12,343,555 B2
Light irradiation system, catheter, and light irradiation device
Toshihiko Tsukamoto, Seto (JP); and Yuko Katsurada, Seto (JP)
Assigned to ASAHI INTECC CO., LTD., Seto (JP)
Filed by ASAHI INTECC CO., LTD., Seto (JP)
Filed on Oct. 29, 2021, as Appl. No. 17/515,035.
Application 17/515,035 is a continuation of application No. PCT/JP2020/016879, filed on Apr. 17, 2020.
Claims priority of application No. 2019-092694 (JP), filed on May 16, 2019.
Prior Publication US 2022/0047885 A1, Feb. 17, 2022
Int. Cl. A61N 5/06 (2006.01); A61B 90/00 (2016.01)
CPC A61N 5/0601 (2013.01) [A61B 90/39 (2016.02); A61B 2090/3966 (2016.02); A61N 2005/0602 (2013.01); A61N 5/062 (2013.01); A61N 2005/0626 (2013.01); A61N 2005/063 (2013.01); A61N 2005/0663 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A light irradiation system for medical use, the light irradiation system comprising:
a catheter having an elongated tube shape; and
a light irradiation device having an elongated shape and configured to be inserted into the catheter, wherein
the catheter includes:
a light transmitting portion provided at least in a part of a side surface on a distal end side of the catheter and configured to transmit light inside the catheter to outside of the catheter;
a first marker portion being radiopaque and being provided close to the light transmitting portion, the first marker portion indicating a position of the light transmitting portion; and
a distal tip joined to the distal end side of the catheter, and
the light irradiation device includes:
a light irradiation portion provided at least in a part of a side surface on a distal end side of the light irradiation device and configured to output irradiation light to the outside; and
a second marker portion being radiopaque and being provided close to the light irradiation portion, wherein
the distal tip is formed with a through-hole penetrating the distal tip in an axial direction of the catheter and having a diameter smaller than an outer diameter of the light irradiation device, and
when the light irradiation device is inserted into the catheter and a distal end of the light irradiation device abuts against an inner surface of the distal tip at which the through-hole is formed, the light irradiation portion and the light transmitting portion are aligned in an axial direction of the light irradiation system.