US 12,350,095 B2
Diagnostic imaging catheter and diagnostic imaging apparatus
Yuki Sakaguchi, Isehara (JP)
Assigned to TERUMO KABUSHIKI KAISHA, Tokyo (JP)
Filed by TERUMO KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jul. 16, 2021, as Appl. No. 17/377,982.
Application 17/377,982 is a continuation of application No. PCT/JP2020/001609, filed on Jan. 17, 2020.
Claims priority of application No. 2019-006437 (JP), filed on Jan. 17, 2019.
Prior Publication US 2021/0338199 A1, Nov. 4, 2021
Int. Cl. A61B 8/12 (2006.01); A61B 5/00 (2006.01); A61M 25/00 (2006.01); A61M 25/06 (2006.01); A61M 39/14 (2006.01)
CPC A61B 8/12 (2013.01) [A61B 5/0084 (2013.01); A61M 25/003 (2013.01); A61M 25/0662 (2013.01); A61M 39/14 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A diagnostic imaging catheter, comprising:
an axially extending drive shaft that includes a distal end portion, and a signal transmitter and receiver at the distal end portion of the drive shaft, the drive shaft and the signal transmitter and receiver being rotatable together and being movable together axially forward and backward;
a support tube provided on an outer periphery of the drive shaft and extending in an axial direction along a part of an axial extent of the drive shaft, the support tube being configured to move axially forward and backward together with the drive shaft, the support tube including a distal-most end;
a sheath in which the drive shaft is positioned, the sheath including a proximal end;
a relay connector connected to the proximal end of the sheath;
a sealing member positioned to provide a seal between the relay connector and the support tube at a position proximal of the proximal end of the sheath;
the relay connector being divided into a main lumen that extends from the sealing member to the proximal end of the sheath and an injection lumen into which is injectable a priming liquid, the injection lumen communicating with the main lumen at a communication port so that the priming liquid injected into the injection port flows into the main lumen by way of the communication port, the communication port including a distal edge; and
the support tube being axially movable so that the distal-most end of the support tube is positionable axially between the sealing member and the distal edge of the communication port.