Endoscopic surgical device and exterior tube
AssigneeFUJIFILM Corporation
InventorShinichi Yamakawa
Life of this patent
Estimating the term…
Abstract
The overtube includes a slider within an overtube body, which guides an endoscope and a treatment tool into a body cavity. An endoscope-coupled part and a treatment tool-coupled part are provided inside the slider, and the slider has a dead zone where the forward and backward movement of either the endoscope or the treatment tool does not interlock with the movement of the other and a sensing zone where the forward and backward movement of either the endoscope or the treatment tool interlocks with the movement of the other. A contact surface of the overtube body with a body wall is constituted of a wall surface member that serves as a rotation-preventing wall surface for preventing rotation in a rotational direction with an axial direction of the overtube body as a center.
Claims6
An endoscopic surgical device comprising:
- an endoscope that observes the inside of a body cavity;
- a treatment tool that inspects or treats an affected part within the body cavity;
- an overtube that guides the endoscope and the treatment tool into the body cavity;
- and
- an exterior tube that fixes the overtube to an abdominal wall,
- wherein the overtube includes
- an overtube body that passes through a body wall and is inserted into the body cavity,
- a slider member provided in the overtube;
- and
- a sleeve provided in the overtube;
- wherein the slider member has a first stopper and a second stopper which are provided separately from each other in a longitudinal axis direction of the overtube,
- the sleeve is slidably located on a first path formed between the first stopper and the second stopper,
- the slider member has a first pressure-contact member configured to hold the endoscope and a second path through which the endoscope is inserted,
- the sleeve has a third path through which the treatment tool is inserted, and the sleeve comprises a second pressure-contact member configured to hold the treatment tool inserted through the third path,
- wherein the exterior tube comprises:
- an insertion part that covers the portion of the overtube body that passes through the body wall,
- a base end part that is provided on a base end side of the insertion part and has a larger external diameter than that of the insertion part, and
- an airtight valve that is provided at the base end part and maintains the airtightness with the overtube body, and
- wherein a plurality of transverse grooves along a circumferential direction are formed in an axial direction in an outer peripheral surface of the insertion part, the transverse grooves have a distal end-side wall surface and a base-end-side wall surface, and an inclination angle of the distal end-side wall surface with respect to a radial direction of the insertion part is made smaller than an inclination angle of the base-end-side wall surface with respect to the radial direction of the insertion part.
An exterior tube that fixes an overtube to an abdominal wall, the overtube including
- an overtube body that passes through a body wall and is inserted into the body cavity,
- a slider member provided in the overtube;
- and
- a sleeve provided in the overtube;
- wherein the slider member has a first stopper and a second stopper which are provided separately from each other in a longitudinal axis direction of the overtube,
- the sleeve is slidably located on a first path formed between the first stopper and the second stopper,
- the slider member has a first pressure-contact member configured to hold an endoscope and a second path through which the endoscope is inserted,
- the sleeve has a third path through which a treatment tool is inserted, and the sleeve comprises a second pressure-contact member configured to hold the treatment tool inserted through the third path,
- wherein the exterior tube comprises:
- an insertion part that covers the portion of the overtube body that passes through the body wall;
- a base end part that is provided on a base end side of the insertion part and has a larger external diameter than that of the insertion part;
- and
- an airtight valve that is provided at the base end part and maintains the airtightness with the overtube body,
- wherein a plurality of transverse grooves along a circumferential direction are formed in an axial direction in an outer peripheral surface of the insertion part, the transverse grooves have a distal end-side wall surface and a base-end-side wall surface, and an inclination angle of the distal end-side wall surface with respect to a radial direction of the insertion part is made smaller than an inclination angle of the base-end-side wall surface with respect to the radial direction of the insertion part.
Dependencies are inferred from the claim text.