US 12,070,186 B2
Surgical system and expansion device
Jun Wakasone, Saitama (JP); Hiroyoshi Kobayashi, Tokyo (JP); Takeshi Murata, Tokyo (JP); and Shotaro Takemoto, Tokyo (JP)
Assigned to OLYMPUS CORPORATION, Tokyo (JP)
Filed by OLYMPUS CORPORATION, Tokyo (JP)
Filed on Oct. 13, 2020, as Appl. No. 17/069,470.
Application 17/069,470 is a continuation of application No. PCT/JP2018/016972, filed on Apr. 26, 2018.
Prior Publication US 2021/0022723 A1, Jan. 28, 2021
Int. Cl. A61B 17/02 (2006.01); A61B 1/00 (2006.01); A61B 1/005 (2006.01); A61B 1/018 (2006.01); A61B 17/00 (2006.01)
CPC A61B 1/00135 (2013.01) [A61B 1/005 (2013.01); A61B 1/018 (2013.01); A61B 17/0218 (2013.01); A61B 2017/00296 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A surgical system comprising:
an overtube comprising a channel into which an endoscope is inserted;
an expansion device configured to ensure a surgical space by expanding an interior of a body, the expansion device disposed at a distal side relative to a tip of the overtube,
wherein the expansion device comprises:
a sheath; and
a wire configured to be protrudable from the sheath, and
an operation member comprising a ratchet mechanism for adjusting a position of a proximal end of the wire,
the wire is configured to be switchable between a first configuration in which the wire protrudes from the sheath and a second configuration in which the wire protrudes from the sheath in a state where the wire is tilted, around a longitudinal axis, at an angle different from the first configuration;
the wire switches from the first configuration to the second configuration by rotating about a longitudinal axis of the sheath; and
the operation member is configured to rotate the wire about the longitudinal axis of the sheath.