ENDOSCOPIC SURGICAL DEVICE AND OUTER SLEEVE

• US 20160175005A1
• Filed: 03/02/2016
• Published: 06/23/2016
• Est. Priority Date: 09/03/2013
• Status: Active Application

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Inventors: DEJIMA, Takumi
• Granted Patent: US 10,258,369 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 1/00112 Connection or coupling means
• CPC Class Codes: A61B 1/00128 mechanical, e.g. for tubes or pipes
• CPC Class Codes: A61B 1/00135 Oversleeves mounted on the endoscope prior to insertion
• CPC Class Codes: A61B 1/00154 using guiding arrangements for insertion
• CPC Class Codes: A61B 1/018 for receiving instruments
• CPC Class Codes: A61B 17/3421 Cannulas
• CPC Class Codes: A61B 2017/22074 the instrument being only slidable in a channel, e.g. advancing optical fibre through a channel
• CPC Class Codes: A61B 2017/3441 with distal sealing means
• CPC Class Codes: A61B 2017/3445 used as instrument channel for multiple instruments
• CPC Class Codes: A61B 2017/347 Locking means, e.g. for locking instrument in cannula
• CPC Class Codes: A61B 90/37 Surgical systems with images on a monitor during operation

Abstract

Provided is an endoscopic surgical device and an overtube with which a surgeon can easily obtain a desired image and in which operability is high. 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. The overtube body is configured to allow the treatment tool to rotate around an axis thereof without changing the positional relationship of the endoscope and the treatment tool with respect to the overtube body.

Claims

1. 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; and

an overtube that guides the endoscope and the treatment tool into the body cavity,

wherein the overtube includes

an overtube body that passes through a body wall and is inserted into the body cavity,

an endoscope insertion passage that is provided inside the overtube body and allows the endoscope to be inserted therethrough so as to be movable forward and backward,

a treatment tool insertion passage that is provided inside the overtube body and allows the treatment tool to be inserted therethrough so as to be movable forward and backward, and

an interlocking member that is configured to be movable forward and backward inside the overtube body, has an endoscope-coupled part to be coupled to the endoscope inserted through the endoscope insertion passage and a treatment tool-coupled part to be coupled to the treatment tool inserted through the treatment tool insertion passage, and 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, and

wherein the interlocking member is configured to allow the treatment tool to rotate around an axis thereof without changing a positional relationship of the endoscope and the treatment tool with respect to the overtube body.

2. The endoscopic surgical device according to claim 1,

wherein the interlocking member includes a slider member that is coupled to the endoscope and moves forward and backward integrally with the endoscope, and a sleeve member that is coupled to the treatment tool and moves forward and backward integrally with the treatment tool, and

wherein a range where the sleeve member is movable forward and backward with respect to the slider member is limited.

3. The endoscopic surgical device according to claim 2,

wherein the sleeve member is configured so as to be rotatable around the axis with respect to the slider member.

4. The endoscopic surgical device according to claim 2,

wherein the slider member is configured so as to be non-rotatable around the axis with respect to the overtube body.

5. The endoscopic surgical device according to claim 1, further comprising:

a fluid-supplying connector that is provided on a base end surface of the overtube body, and has an axial direction that is made parallel to a longitudinal axis of the overtube body, and has a tube member for sending fluid into the body cavity through an internal space of the overtube body detachably connected thereto.

6. The endoscopic surgical device according to claim 5,

wherein the fluid-supplying connector is an air supply connector for supplying gas for pneumoperitoneum to the inside of the body cavity.

7. The endoscopic surgical device according to claim 5, further comprising:

an inner needle including a first elongated rod part capable of being inserted through the endoscope insertion passage, a second elongated rod part capable of being inserted through the treatment tool insertion passage, and a head part provided on a base end side of the first rod part and the second rod part,

wherein the head part is provided with a cutout part obtained by cutting out a portion interfering with the fluid-supplying connector, in a state where the first and second rod parts are respectively inserted through the endoscope insertion passage and the treatment tool insertion passage and distal ends of the first and second rod parts have protruded from a distal end of the overtube body.

8. The endoscopic surgical device according to claim 1,

wherein a following formula is satisfied when a fixing force for fixing the endoscope-coupled part to the endoscope is defined as F1 and a fixing force for fixing the treatment tool-coupled part to the treatment tool is defined as F2.

F1>

F2

9. The endoscopic surgical device according to claim 1, further comprising:

a first valve member that is provided in the endoscope insertion passage and secures airtightness within the body cavity; and

a second valve member that is provided in the treatment tool insertion passage and secures airtightness within the body cavity,

wherein following formulas are satisfied when a fixing force for fixing the endoscope-coupled part to the endoscope is defined as F1, a fixing force for fixing the treatment tool-coupled part to the treatment tool is defined as F2, and a frictional force that the endoscope receives from the first valve member when the endoscope moves forward and backward is defined as F3.

F1>

F3

F2>

F3

10. An overtube comprising:

an overtube body that passes through a body wall and is inserted into a body cavity;

an endoscope insertion passage that is provided inside the overtube body and allows an endoscope for observing the inside of the body cavity to be inserted therethrough so as to be movable forward and backward;

a treatment tool insertion passage that is provided inside the overtube body and allows a treatment tool for inspecting or treating an affected part within the body cavity to be inserted therethrough so as to be movable forward and backward; and

an interlocking member that is configured to be movable forward and backward inside the overtube body, has an endoscope-coupled part to be coupled to the endoscope inserted through the endoscope insertion passage and a treatment tool-coupled part to be coupled to the treatment tool inserted through the treatment tool insertion passage, and 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,

wherein the interlocking member is configured to allow the treatment tool to rotate around an axis thereof without changing a positional relationship of the endoscope and the treatment tool with respect to the overtube body.

11. The overtube according to claim 10,

wherein the interlocking member includes a slider member that is coupled to the endoscope and moves forward and backward integrally with the endoscope, and a sleeve member that is coupled to the treatment tool and moves forward and backward integrally with the treatment tool, and

wherein a range where the sleeve member is movable forward and backward with respect to the slider member is limited.

12. The overtube according to claim 11,

wherein the sleeve member is configured so as to be rotatable around the axis with respect to the slider member.

13. The overtube according to claim 11,

wherein the slider member is configured so as to be non-rotatable around the axis with respect to the overtube body.