# US 2004/0073239 A1 · Blood vessel anastomosing auxiliary tool > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2004/0073239 A1 - Document ID: US20040073239A1 - Status: Published application - Kind: A1 - Application number: 10/470,432 - Filed: 2003-08-14 - Published: 2004-04-15 - Earliest claimed: 2001-01-26 - Assignees: JMS Co., Ltd. - Inventors: Takasumi Nakamura; Manabu Okabe; Shigeki Kawarabata - Web page: https://patentgrep.com/patent/US20040073239A1 ## CPC - A61B 17/12131: {characterised by the type of occluding device} - A61B 17/11: for performing anastomosis; Buttons for anastomosis - A61B 17/1204: {temporary occlusion} - A61B 17/12045: {double occlusion, e.g. during anastomosis} - A61B 17/12136: {Balloons} - A61B 2017/1107: {for blood vessels} - A61B 2017/1135: {End-to-side connections, e.g. T- or Y-connections} - A61B 2017/12127: {Double occlusion, e.g. for creating blood-free anastomosis site} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A blood vessel anastomosing auxiliary tool consisting of a flexible hollow conduit having opening ends at the opposite ends thereof, and comprising, on the outer surface of the conduit, at least two bulky portions, a retrieving means for retrieving the conduit from within a blood vessel, and desirably a guide wire for guiding the conduit when it is inserted into a blood vessel, characterized in that the conduit has flexibility and self-restoring property, and the bulky portions are disposed on the conduit eccentrically, the use of the blood vessel anastomosing auxiliary tool permitting a quick and positive anastomosis between a bypassed blood vessel and a bypassing blood vessel while a blood flow remaining in a portion between the central and peripheral sides of the bypassed blood vessel is secured during a blood vessel bypassing operation, and further ensuring an unobstructed blood vessel anastomosing to allow an easier practicing operation (anastomosing) than those by conventional tools. ## Claims ### Claim 1 A blood vessel anastomosing auxiliary tool consisting of at least: a hollow conduit having openings at both ends, and having flexibility and self-restoring property for inserting into a blood vessel; a blood leaking preventing means on the outer surface of said hollow conduit, preventing blood leaking from the space formed between the external wall of said conduit and the inner wall of the blood vessel, when the hollow conduit is inserted into a blood vessel; and a retrieving means for retrieving said conduit from within a blood vessel; and furthermore characterized by: said blood leaking preventing means being 2 or more circular bulky portions disposed on the outer surface of the conduit; and at least 1 of said circular bulky portion being disposed eccentrically against conduit shaft. ### Claim 2 A blood vessel anastomosing auxiliary tool consisting of at least: a hollow conduit having openings at both ends, and having flexibility and self-restoring property for inserting into a blood vessel; a flexible guide wire for guiding said hollow conduit when it is inserted into a blood vessel; a blood leaking preventing means on the outer surface of said hollow conduit, preventing blood leaking from the space formed between the external wall of said conduit and the inner wall of the blood vessel, when the hollow conduit is inserted into a blood vessel; and a retrieving means for retrieving said conduit from within a blood vessel; and furthermore said guide wire having a higher elasticity than the blood vessel to be inserted, a width being adjustable to be inserted into the lumen of the hollow conduit, and a length being more than 1.2 times longer than the length of the hollow conduit (shaft direction). ### Claim 3 A blood vessel anastomosing auxiliary tool consisting of at least: a hollow conduit having openings at both ends, and having flexibility and self-restoring property for inserting into a blood vessel; a flexible guide wire for guiding said hollow conduit when it is inserted into a blood vessel; a blood leaking preventing means on the outer surface of said hollow conduit, preventing blood leaking from the space formed between the external wall of said conduit and the inner wall of the blood vessel, when the hollow conduit is inserted into a blood vessel; and a retrieving means for retrieving said conduit from within a blood vessel; and furthermore one end of said retrieving means is attached to said hollow conduit, and to the other end is attached a tab wherein a holding means and a tissue-binding means are disposed. ### Claim 4 (depends on 1, 2, 3) The blood vessel anastomosing auxiliary tool according to claim 1, 2 or 3, wherein the retrieving means for retrieving said conduit from within a blood vessel is a linear thread attached nearly to the central part of the hollow conduit. ### Claim 5 (depends on 1, 2, 3, 4) The blood vessel anastomosing auxiliary tool according to claim 1, 2, 3 or 4, wherein the blood leaking preventing means is a bulky portion formed at the outer surface of the hollow conduit, and the bulky portion is a circular bulky portion wherein the cross section in the shaft direction of the conduit formed at the outer edge of the bulky portion is substantially a circular form. ### Claim 6 (depends on 1, 4, 5) The blood vessel anastomosing auxiliary tool according to claim 1, 4 or 5, wherein the eccentric direction of the 2 bulky portions are formed and disposed to be on the same side of the conduit. ### Claim 7 (depends on 1, 4, 5, 6) The blood vessel anastomosing auxiliary tool according to claim 1, 4, 5 or 6, wherein one part of the outer edge of the bulky portion is touching the outer edge of the non-bulky portion. ### Claim 8 (depends on 1, 4, 5, 6, 7) The blood vessel anastomosing auxiliary tool according to claim 1, 4, 5, 6 or 7, wherein the inserting angle α of the bulky portion is between 20 and 45 degrees. ### Claim 9 (depends on 1, 4, 5, 6, 7, 8) The blood vessel anastomosing auxiliary tool according to claim 1, 4, 5, 6, 7 or 8, wherein the retrieving angle β of the bulky portion is between 19 and 45 degrees. ### Claim 10 (depends on 1, 4, 5, 6, 7, 8, 9) The blood vessel anastomosing auxiliary tool according to claim 1, 4, 5, 6, 7, 8 or 9, wherein n1/n2 is between 0.20 and 3.0, when n2 is the diameter of the non-bulky portion, and n1 is the height of the bulky portion. ### Claim 11 (depends on 2, 4) The blood vessel anastomosing auxiliary tool according to claim 2 or 4, wherein said guide wire is inserted into the hollow conduit in advance, and the ends of said guide wire are projected from the ends of the hollow conduit. ### Claim 12 (depends on 2, 4) The blood vessel anastomosing auxiliary tool according to claim 2, 4, or 11, wherein the length of said guide wire is 1.2-5 times longer than the length of the shaft direction of the hollow conduit. ### Claim 13 (depends on 2, 4, 11, 12) The blood vessel anastomosing auxiliary tool according to claim 2, 4, 11 or 12, wherein the shore hardness of said guide wire is between 30 and 80 D. ### Claim 14 (depends on 3, 4) The blood vessel anastomosing auxiliary tool according to claim 3 or 4, wherein said holding means and tissue-binding auxiliary means serves as both a holding means and a tissue-binding means, is disposed to said tab. ### Claim 15 (depends on 3, 4) The blood vessel anastomosing auxiliary tool according to claim 3, 4, or 14, wherein said means which serves as both a holding means and a tissue-binding means is a through-hole formed on the tab. ### Claim 16 (depends on 15) The blood vessel anastomosing auxiliary tool according to claim 15, wherein the diameter of said through-hole is between 1 and 5 mm. ### Claim 17 (depends on 15, 16) The blood vessel anastomosing auxiliary tool according to claim 15 or 16, wherein the through-hole is formed at a distance of 0.5-10 mm from the edge of the tab.