Medical device
First Claim
1. A medical device comprising:
- an accommodation unit that includes a lumen which accommodates a capturing target present inside a living body, in which a shape of at least a portion on a distal side is expandable enabling the lumen of the accommodation unit to be increased or decreased in volume, wherein the accommodation unit includes an expandable section which is expandable along an axial direction in which the fluid flows, the expandable section having a contracted state and an expanded state, the contracted state having a length in the axial direction that is less than a diameter of the accommodation unit, and the expanded state having a length in the axial direction that is longer than the length in the axial direction of the contracted state, and wherein an inner surface of the at least the portion on the distal side before and after expansion is configured to be flat as a whole, a distal opening portion and a proximal opening portion which respectively communicate with the lumen, and a filter for capturing at least one or more of the capturing targets;
an impeller holding unit that includes an impeller which causes a fluid to flow from the distal opening portion toward the proximal opening portion inside the living body so as to allow the lumen to aspirate the capturing target together with the fluid;
an introduction unit configured to be used by an operator in order to introduce the accommodation unit and the impeller holding unit into the living body; and
a hand operation unit configured to be operated by the operator in order to adjust a position of the first cylinder introduced in the living body and/or in order to rotate the impeller.
1 Assignment
0 Petitions
Accused Products
Abstract
A medical device and method are disclosed, which can sufficiently capture a capturing target even if a lumen is deformed. A medical device has an accommodation unit and an impeller holding unit. The accommodation unit includes a lumen which accommodates a capturing target present inside a living body, in which a shape of at least a portion on a distal side is deformable, and whose inner surface before and after deformation is configured to be flat as a whole, a distal opening portion and a proximal opening portion which respectively communicate with the lumen, and a filter for capturing at least one or more of the capturing targets. The impeller holding unit includes an impeller which causes a fluid to flow from the distal opening portion toward the proximal opening portion inside the living body so as to allow the lumen to aspirate the capturing target together with the fluid.
7 Citations
17 Claims
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1. A medical device comprising:
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an accommodation unit that includes a lumen which accommodates a capturing target present inside a living body, in which a shape of at least a portion on a distal side is expandable enabling the lumen of the accommodation unit to be increased or decreased in volume, wherein the accommodation unit includes an expandable section which is expandable along an axial direction in which the fluid flows, the expandable section having a contracted state and an expanded state, the contracted state having a length in the axial direction that is less than a diameter of the accommodation unit, and the expanded state having a length in the axial direction that is longer than the length in the axial direction of the contracted state, and wherein an inner surface of the at least the portion on the distal side before and after expansion is configured to be flat as a whole, a distal opening portion and a proximal opening portion which respectively communicate with the lumen, and a filter for capturing at least one or more of the capturing targets; an impeller holding unit that includes an impeller which causes a fluid to flow from the distal opening portion toward the proximal opening portion inside the living body so as to allow the lumen to aspirate the capturing target together with the fluid; an introduction unit configured to be used by an operator in order to introduce the accommodation unit and the impeller holding unit into the living body; and a hand operation unit configured to be operated by the operator in order to adjust a position of the first cylinder introduced in the living body and/or in order to rotate the impeller. - View Dependent Claims (2, 3, 4, 5, 6, 7, 15)
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8. A method for capturing a target present in a living body, the method comprising:
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inserting an accommodation unit and an impeller holding unit into the living body with an introduction unit operated by an operator, the accommodation unit including a lumen which accommodates a capturing target present inside the living body, in which a shape of at least a portion on a distal side is expandable enabling the lumen of the accommodation unit to be increased or decreased in volume, wherein the accommodation unit includes an expandable section which is expandable along an axial direction in which the fluid flows, the expandable section having a contracted state and an expanded state, the contracted state having a length in the axial direction that is less than a diameter of the accommodation unit, and the expanded state having a length in the axial direction that is longer than the length in the axial direction of the contracted state, and wherein an inner surface of the at least the portion on the distal side before and after expansion is configured to be flat as a whole, a distal opening portion and a proximal opening portion which respectively communicate with the lumen, and a filter for capturing at least one or more of the capturing targets; causing a fluid to flow with the impeller holding unit, the impeller holding unit including an impeller which causes the fluid to flow from the distal opening portion toward the proximal opening portion inside the living body so as to allow the lumen to aspirate the capturing target together with the fluid; and adjusting a position of the first cylinder introduced in the living body and/or rotating the impeller with a hand operation unit operated by the operator. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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16. A medical device for capturing a target present inside a living body, the medical device comprising:
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an accommodation unit having a lumen, the accommodation unit including a first cylinder, an expandable member, and a filter for capturing at least one or more of the capturing targets, the expandable member having a contracted state and an expanded state, the contracted state having a length in an axial direction that is less than a diameter of the accommodation unit, and the expanded state having a length in the axial direction that is longer than the length in the axial direction of the contracted state, the first cylinder and the expandable member having a cylindrical shape and joined together in a state where the first cylinder and the expandable member are adjacent to each other along an axial direction, and wherein an inner surface of the expandable member and the first cylinder before and after expansion of the expandable member is configured to be smooth as a whole, and a distal opening portion and a proximal opening portion which respectively communicate with the lumen; an impeller holding unit that includes an impeller which causes a fluid to flow from the distal opening portion toward the proximal opening portion inside the living body so as to allow the lumen to aspirate the capturing target together with the fluid; an introduction unit configured to be used by an operator in order to introduce the accommodation unit and the impeller holding unit into the living body; and a hand operation unit configured to be operated by the operator in order to adjust a position of the first cylinder introduced in the living body and/or in order to rotate the impeller. - View Dependent Claims (17)
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Specification