Endoscopic surgical device and outer sleeve
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 endoscope insertion passage that allows the endoscope to be inserted therethrough so as to be movable forward and backward,a treatment tool insertion passage that 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 along the overtube, 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, andwherein following formulas are satisfied when a fixing force for fixing the interlocking member to the endoscope is defined as F1, a fixing 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.
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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 endoscope insertion passage that allows the endoscope to be inserted therethrough so as to be movable forward and backward, a treatment tool insertion passage that 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 along the overtube, 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, and wherein following formulas are satisfied when a fixing force for fixing the interlocking member to the endoscope is defined as F1, a fixing 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 which is to be inserted into a body cavity through a body wall, the overtube comprising:
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an endoscope insertion passage that 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 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 along the overtube, 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 following formulas are satisfied when a fixing force for fixing the interlocking member to the endoscope is defined as F1, a fixing 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