Endoscopic surgical device and overtube
First Claim
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 includesan 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,a first valve member that is provided in the endoscope insertion passage and secures airtightness within the body cavity,a second valve member that is provided in the treatment tool insertion passage and secures the airtightness within the body cavity, andan interlocking member that is configured to be movable forward and backward inside the overtube body, and 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, wherein the first valve member and the second valve member are not parts of the interlocking member,wherein following formulas are satisfied when a frictional force for fixing the interlocking member to the endoscope is defined as F1, a frictional force for fixing the interlocking member 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.
1 Assignment
0 Petitions
Accused Products
Abstract
Provided is an endoscopic surgical device and an overtube with which a surgeon can easily obtain a desired image and operability is high. The overtube includes a slider inside the overtube body that guides an endoscope and a treatment tool into a body cavity, the first valve member provided in the endoscope insertion passage, and the second valve member provided in the treatment tool insertion passage. F1>F3 and F2>F3 are satisfied when a fixing force for fixing the slider to the endoscope is defined as F1, a fixing force for fixing the slider to the treatment tool is defined as F2, and a frictional force that receives from the first valve member when the endoscope moves forward and backward is defined as F3.
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Citations
16 Claims
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1. An endoscopic surgical device comprising:
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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, a first valve member that is provided in the endoscope insertion passage and secures airtightness within the body cavity, a second valve member that is provided in the treatment tool insertion passage and secures the airtightness within the body cavity, and an interlocking member that is configured to be movable forward and backward inside the overtube body, and 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, wherein the first valve member and the second valve member are not parts of the interlocking member, wherein following formulas are satisfied when a frictional force for fixing the interlocking member to the endoscope is defined as F1, a frictional force for fixing the interlocking member 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An overtube comprising:
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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; a first valve member that is provided in the endoscope insertion passage and secures airtightness within the body cavity; a second valve member that is provided in the treatment tool insertion passage and secures the airtightness within the body cavity; and an interlocking member that is configured to be movable forward and backward inside the overtube body, and 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, wherein the first valve member and the second valve member are not parts of the interlocking member, wherein following formulas are satisfied when a frictional force for fixing the interlocking member to the endoscope is defined as F1, a frictional force for fixing the interlocking member 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. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification