MEDICAL DEVICE

• US 20160262775A1
• Filed: 03/11/2016
• Published: 09/15/2016
• Est. Priority Date: 03/13/2015
• Status: Active Grant

• Current Assignee: Terumo Kabushiki Kaisha
• Original Assignee: Terumo Kabushiki Kaisha
• Inventors: HONDA, Kei
• Granted Patent: US 10,507,030 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 17/22 Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for dilators A61M29/00
• CPC Class Codes: A61B 2017/00473 Distal part, e.g. tip or head A61B2017/00464 takes precedence
• CPC Class Codes: A61B 2017/00553 using a turbine
• CPC Class Codes: A61B 2017/22079 with suction of debris
• CPC Class Codes: A61B 2217/005 with suction drainage system
• CPC Class Codes: A61B 90/70 Cleaning devices specially adapted for surgical instruments
• CPC Class Codes: A61M 1/79 Filters for solid matter specially adapted for dental use A61C17/065

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.

Claims

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 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; and

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.

2. The medical device according to claim 1,

wherein the accommodation unit includes a deformable section which is expandable and/or bendable along an axial direction in which the fluid flows.

3. The medical device according to claim 2,

wherein the deformable section includes an expandable member which has a tubular shape along the axial direction in which the fluid flows, and at least a portion of which is formed in a bellows shape so as to be expandable.

4. The medical device according to claim 2,

wherein the deformable section includes a bending member which has a tubular shape along the axial direction in which the fluid flows, and at least a portion of which is flexible so as to be bendable, and a winding member which is wound in a spiral shape along the axial direction in which the fluid flows, radially outward or inward from the bending member.

5. The medical device according to claim 2,

wherein the deformable section includes a first deformable member, which has a tubular shape along the axial direction in which the fluid flows, and a second deformable member, which is arranged adjacent to the first deformable member in the axial direction, which has a tubular shape along the axial direction, and which can be joined to the first deformable member.

6. The medical device according to claim 2,

wherein the accommodation unit includes a fixing member which suppresses mobility of the deformable section.

7. The medical device according to claim 2,

wherein the accommodation unit includes a flat member which is located between the deformable section and the lumen, whose inner surface is configured to be flat as a whole, and which covers at least a portion of the lumen.

8. The medical device according to claim 7,

wherein the flat member is elastic.

9. A method for capturing a target present in a living body, the method comprising:

inserting an accommodation unit into the living body, 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 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; and

causing a fluid to flow with an 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.

10. The method according to claim 9,

wherein the accommodation unit includes a deformable section which is expandable and/or bendable along an axial direction in which the fluid flows.

11. The method according to claim 10,

wherein the deformable section includes an expandable member which has a tubular shape along the axial direction in which the fluid flows, and at least a portion of which is formed in a bellows shape so as to be expandable.

12. The method according to claim 10,

wherein the deformable section includes a bending member which has a tubular shape along the axial direction in which the fluid flows, and at least a portion of which is flexible so as to be bendable, and a winding member which is wound in a spiral shape along the axial direction in which the fluid flows, radially outward or inward from the bending member.

13. The method according to claim 10,

wherein the deformable section includes a first deformable member, which has a tubular shape along the axial direction in which the fluid flows, and a second deformable member, which is arranged adjacent to the first deformable member in the axial direction, which has a tubular shape along the axial direction, and which can be joined to the first deformable member.

14. The method according to claim 10, comprising:

suppressing mobility of the deformable section with a fixing member.

15. The method according to claim 10,

locating a flat member between the deformable section and the lumen, and wherein an inner surface of the flat member is configured to be flat as a whole and covers at least a portion of the lumen.

16. The method according to claim 15,

wherein the flat member is elastic.