Patent ID: 11957523
Assignee: MEDICAROID CORPORATION
Field: Medical technology (Instruments)
Classification: CPC A  B | IPC A  B

Claim 0:
1. A surgical instrument comprising:
a shaft;
an end effector provided on a side of one end of the shaft;
a housing including: a base provided on a side of the other end of the shaft and including an attachment surface at which the base is to be attached to a robot arm; a lid portion covering the base; and cleaning liquid supply holes to supply a cleaning liquid; and
a cleaning tube provided in the housing, extending from an inside of the housing to an inside of the shaft, and configured to supply the cleaning liquid to the inside of the shaft, wherein
the cleaning liquid supply holes comprise: a first cleaning liquid supply hole to which the cleaning tube is attached; a second cleaning liquid supply hole communicating with the inside of the housing; and a third cleaning liquid supply hole opening in a direction substantially orthogonal to an opening direction of the second cleaning liquid supply hole and communicating with the inside of the housing,
the cleaning tube comprises an insertion portion and a movement restriction portion arranged on an outer circumferential surface of the cleaning tube, the movement restriction portion adjacent to an end of the cleaning tube on a housing side thereof, the movement restriction portion having a larger outer diameter than an outer diameter of the insertion portion, and
the cleaning tube further comprises a flange at the end of the cleaning tube on the housing side thereof such that the first cleaning liquid supply hole is arranged between the movement restriction portion and the flange of the cleaning tube, the flange having an outer diameter larger than the outer diameter of the insertion portion and a diameter of the first cleaning liquid supply hole, the flange preventing a movement of the cleaning tube away from the first cleaning liquid supply hole in a direction of supplying the cleaning liquid in the cleaning tube.