# US 10,863,997 B2 · Medical device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,863,997 B2 - Document ID: US10863997B2 - Status: Granted - Kind: B2 - Application number: 15/394,152 - Filed: 2016-12-29 - Published: 2017-09-28 - Granted: 2020-12-15 - Earliest claimed: 2016-03-25 - Assignees: Asahi Intecc Co., Ltd. - Applicants: Asahi Intecc Co., Ltd. - Inventors: Yukiko Enami - Web page: https://patentgrep.com/patent/US10863997B2 ## CPC - A61B 17/22: Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for - A61B 17/320725: {with radially expandable cutting or abrading elements (A61B17/32075 takes precedence)} - A61M 29/02: Dilators made of swellable material {(balloon catheters for angioplasty A61M25/104)} - A61B 2017/00477: {Coupling (A61B2017/0046 takes precedence)} - A61B 2017/00867: {shape memory effect} - A61M 2025/1081: {having sheaths or the like for covering the balloon but not forming a permanent part of the balloon, e.g. retractable, dissolvable or tearable sheaths} - A61M 2025/109: {having balloons for removing solid matters, e.g. by grasping or scraping plaque, thrombus or other matters that obstruct the flow} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} ## Abstract A medical device includes a mesh member capable of radially expanding and contracting, and a cylindrical member located at one end of the mesh member. The mesh member is woven from a first wire and a second wire. The cylindrical member includes a wrapping portion and a lining portion that are fixed to each other at fixation portions positioned within spaces defined by the first wire and the second wire. Neither the wrapping portion nor the lining portion is fixed to either of the first wire or the second wire. Upon expansion or radial contraction of the mesh member, movement of the first wire or the second wire is not interfered with by the cylindrical member. This reduces the concentration of stress at the end of the mesh member and thus the likelihood that either the first wire or the second wire will break. ## Claims ### Claim 1 A medical device comprising: a mesh member capable of radially expanding and radially contracting, the mesh member being woven from a first wire and a second wire and having a proximal end, a distal end opposite to the proximal end, and a middle portion between the proximal end and the distal end; a first cylindrical member disposed at the proximal end of the mesh member and not at the middle portion of the mesh member, the first cylindrical member comprising a first wrapping portion and a first lining portion, the first wrapping portion covering an outer circumference of the proximal end of the mesh member, and the first lining portion covering an inner circumference of the proximal end of the mesh member; and a shaft fixed to a proximal end portion of the first wrapping portion and extending in a proximal direction away from the distal end of the mesh member, the shaft having a central axis that is radially offset from a central axis of the first cylindrical member, wherein: the first wrapping portion and the first lining portion are fixed to each other at first fixation portions, the first fixation portions being within spaces that are defined by the first wire and the second wire, and neither the first wrapping portion nor the first lining portion is fixed to either of the first wire or the second wire. ### Claim 2 (depends on 1) The medical device according to claim 1, wherein: an outer surface of the first wrapping portion has depressed sections and projected sections, the depressed sections being formed at the first fixation portions, and the projected sections being formed where the first wrapping portion and the first lining portion are not fixed to each other, and the shaft is fixed to the outer surface of the first wrapping portion at one of the depressed sections. ### Claim 3 (depends on 2) The medical device according to claim 2, further comprising: a second cylindrical member disposed at the distal end of the mesh member and not at the middle portion of the mesh member, the second cylindrical member comprising a second wrapping portion and a second lining portion, the second wrapping portion covering an outer circumference of the distal end of the mesh member, and the second lining portion covering an inner circumference of the distal end of the mesh member, wherein: the second wrapping portion and the second lining portion are fixed to each other at second fixation portions, the second fixation portions being within spaces that are defined by the first wire and the second wire, and neither the second wrapping portion nor the second lining portion is fixed to either of the first wire or the second wire. ### Claim 4 (depends on 2) The medical device according to claim 2, wherein at least one of the first wrapping portion and the first lining portion has a space at one of the depressed sections. ### Claim 5 (depends on 4) The medical device according to claim 4, wherein the first wire and the second wire are capable of moving freely between the first wrapping portion and the first lining portion when the mesh member radially expands or radially contracts. ### Claim 6 (depends on 4) The medical device according to claim 4, wherein a cross-sectional profile of the shaft is elliptical so as to be accommodated between two adjacent projected sections. ### Claim 7 (depends on 2) The medical device according to claim 2, wherein a portion of a cross section of the shaft, taken perpendicular to an axial direction of the first cylindrical member, is accommodated between two adjacent projected sections. ### Claim 8 (depends on 2) The medical device according to claim 2, wherein the first wire and the second wire are capable of moving freely between the first wrapping portion and the first lining portion when the mesh member radially expands or radially contracts. ### Claim 9 (depends on 2) The medical device according to claim 2, wherein a cross-sectional profile of the shaft is elliptical so as to be accommodated between two adjacent projected sections. ### Claim 10 (depends on 1) The medical device according to claim 1, further comprising: a second cylindrical member disposed at the distal end of the mesh member and not at the middle portion of the mesh member, the second cylindrical member comprising a second wrapping portion and a second lining portion, the second wrapping portion covering an outer circumference of the distal end of the mesh member, and the second lining portion covering an inner circumference of the distal end of the mesh member, wherein: the second wrapping portion and the second lining portion are fixed to each other at second fixation portions, the second fixation portions being within spaces that are defined by the first wire and the second wire, and neither the second wrapping portion nor the second lining portion is fixed to either of the first wire or the second wire. ### Claim 11 (depends on 1) The medical device according to claim 1, wherein at least one of the first wrapping portion and the first lining portion has a space at one of the first fixation portions. ### Claim 12 (depends on 11) The medical device according to claim 11, wherein the first wire and the second wire are capable of moving freely between the first wrapping portion and the first lining portion when the mesh member radially expands or radially contracts. ### Claim 13 (depends on 11) The medical device according to claim 11, wherein a cross-sectional profile of the shaft is elliptical. ### Claim 14 (depends on 1) The medical device according to claim 1, wherein at least one of the first wrapping member and the first lining portion is made of metal. ### Claim 15 (depends on 1) The medical device according to claim 1, wherein the shaft is fixed to an outer surface of the first wrapping portion of the first cylindrical member. ### Claim 16 (depends on 1) The medical device according to claim 1, wherein the first wire and the second wire are capable of moving freely between the first wrapping portion and the first lining portion when the mesh member radially expands or radially contracts. ### Claim 17 (depends on 1) The medical device according to claim 1, wherein a cross-sectional profile of the shaft is elliptical. ### Claim 18 (depends on 1) The medical device according to claim 1, wherein the medical device is configured for dilating a stenosis or stricture. ### Claim 19 A medical device comprising: a mesh member capable of radially expanding and radially contracting, the mesh member being woven from a first wire and a second wire and having a proximal end, a distal end opposite to the proximal end, and a middle portion between the proximal end and the distal end; a first cylindrical member disposed at the proximal end of the mesh member and not at the middle portion of the mesh member, the first cylindrical member comprising a first wrapping portion and a first lining portion, the first wrapping portion covering an outer circumference of the proximal end of the mesh member, and the first lining portion covering an inner circumference of the proximal end of the mesh member; and a shaft permanently fixed to the first cylindrical member and extending in a proximal direction away from the distal end of the mesh member, wherein: the first wrapping portion and the first lining portion are fixed to each other at first fixation portions, the first fixation portions being within spaces that are defined by the first wire and the second wire, and neither the first wrapping portion nor the first lining portion is fixed to either of the first wire or the second wire. ### Claim 20 (depends on 19) The medical device according to claim 19, wherein the medical device is configured for dilating a stenosis or stricture.