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

Claim 19:
20. 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 to supply the cleaning liquid to an 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 an 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 lid portion is formed with the first cleaning liquid supply hole to which the cleaning tube is attached in such a manner that the first cleaning liquid supply hole communicates with the cleaning tube,
an outer circumferential surface of the cleaning tube is formed with a movement restriction portion that restricts a movement of the cleaning tube in a direction opposite to a direction of supplying the cleaning liquid in the cleaning tube,
the first cleaning liquid supply hole includes: a large diameter portion to which an end portion of a cleaning device for supplying the cleaning liquid is to be inserted; and a small diameter portion provided on a downstream side, in the cleaning liquid supply direction, of the large diameter portion,
the lid portion includes a projected portion protruded from an inner circumferential surface of the large diameter portion toward a center of the first cleaning liquid supply hole and forming the small diameter portion,
the cleaning tube includes a flange portion outwardly protruding therefrom in a radial direction of the cleaning tube, and
the movement restriction portion and the flange portion are arranged so as to sandwich the projected portion of the lid portion in the cleaning liquid supply direction.