# US 12,005,196 B2 · Method for producing catheter tube > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,005,196 B2 - Document ID: US12005196B2 - Status: Granted - Kind: B2 - Application number: 17/431,889 - Filed: 2020-01-21 - Published: 2022-06-02 - Granted: 2024-06-11 - Earliest claimed: 2019-04-24 - Assignees: Kaneka Corporation - Applicants: Kaneka Corporation - Inventors: Takuro Koda; Hesong Ye - Web page: https://patentgrep.com/patent/US12005196B2 ## CPC - A61M 25/0009: {Making of catheters or other medical or surgical tubes} - A61M 25/00: Catheters; Hollow probes (dilators A61M29/00; {peritoneal catheters A61M1/285; tracheal tubes A61M16/04; for drainage A61M27/00; for uterus, vagina or rectum A61M31/00} ; for measuring or testing A61B; {materials for catheters A61L29/00}) - A61M 25/0015: {Making lateral openings in a catheter tube, e.g. holes, slits, ports, piercings of guidewire ports; Methods for processing the holes, e.g. smoothing the edges} - B29C 49/10: using mechanical means {for prestretching} - B29C 2793/0009: Cutting out - B29C 2793/009: after shaping - B29L 2031/7542: {Catheters} - 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)} - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES ## Abstract The present application relates to a method for producing a catheter tube. The method including sucking gas from a second end 43 of a tubular body 40 while introducing pressurized gas into a lumen 41 of the tubular body 40 from a first end 42 of the tubular body 40, so that an internal pressure is applied to the lumen 41 of the tubular body 40 by introducing the pressurized gas, and the tubular body 40 is delivered in a direction from the first end 42 to the second end 43 by sucking the gas from the second end 43 of the tubular body 40. ## Claims ### Claim 1 A method for producing a catheter tube, the method comprising sucking gas from a second end of a tubular body while introducing pressurized gas into a lumen of the tubular body from a first end of the tubular body, so that an internal pressure is applied to the lumen of the tubular body by introducing the pressurized gas, and the first end and the second end of the tubular body are delivered in a direction from the first end of the tubular body to the second end of the tubular body, while maintaining relative positions of the first and the second ends of the tubular body, by sucking the gas from the second end of the tubular body. ### Claim 2 (depends on 1) The method according to claim 1, the method further comprising performing at least one of pressurization, heating, stretching, and blow molding of the tubular body to form the tubular body into a predetermined shape. ### Claim 3 (depends on 1) The method according to claim 1, wherein the second end of the tubular body is sealed, and the method further comprises: performing at least one of pressurization, heating, stretching, and blow molding of the tubular body to form the tubular body into a predetermined shape; and cutting a second end portion of the tubular body to allow the lumen at the second end to communicate with an outside of the tubular body. ### Claim 4 (depends on 1) The method according to claim 1, wherein a second end portion of the tubular body is sealed. ### Claim 5 (depends on 1) The method according to claim 1, wherein the tubular body has a portion smaller in outer diameter than the first end of the tubular body, the portion being located closer to the second end rather than the first end of the tubular body. ### Claim 6 (depends on 1) The method according to claim 1, further comprises arranging the tubular body and a device configured to deliver the tubular body, wherein the device comprises: a hollow body having a hollow portion extending from a first end to a second end of the hollow body; a pressure portion disposed at the first end of the hollow body and connectable to the tubular body so as to introduce the pressurized gas into the lumen of the tubular body; and a negative pressure portion disposed at the second end of the hollow body and connected to the hollow body so as to suck gas from the hollow portion of the hollow body, and the pressure portion is connected to the tubular body. ### Claim 7 (depends on 6) The method according to claim 6, wherein the device further comprises a first holding portion disposed between the pressure portion and the hollow body, the first holding portion holding a first end portion of the tubular body, and a second holding portion disposed between the hollow body and the negative pressure portion, the second holding portion holding a second end portion of the tubular body delivered toward the second end of the hollow body. ### Claim 8 (depends on 7) The method according to claim 7, wherein each of the first holding portion and the second holding portion includes one or more chuck pieces. ### Claim 9 (depends on 7) The method according to claim 7, wherein the device further comprises a first seal portion disposed between the pressure portion and the first end portion of the tubular body, the first seal portion sealing a gap between the pressure portion and the tubular body, and a second seal portion disposed between the hollow body and the negative pressure portion, the second seal portion sealing a gap between the hollow body and the negative pressure portion. ### Claim 10 (depends on 9) The method according to claim 9, wherein the device further comprises a second drive mechanism configured to move at least one of the pressure portion, the first holding portion, and the first seal portion in an extending direction of the hollow portion. ### Claim 11 (depends on 9) The method according to claim 9, wherein the method includes: holding the first end portion of the tubular body with the first holding portion; sealing a gap between the first holding portion and the tubular body with the first seal portion; connecting the pressure portion to the first end of the tubular body and introducing the pressurized gas into the lumen of the tubular body with the pressure portion; sealing the gap between the hollow body and the negative pressure portion with the second seal portion; moving the pressure portion and the tubular body toward the hollow portion so that a part of the tubular body is disposed in the hollow portion; sucking the gas in the hollow portion of the hollow body with the negative pressure portion so that the tubular body is delivered toward the second end of the hollow body; and holding the second end portion of the tubular body with the second holding portion. ### Claim 12 (depends on 7) The method according to claim 7, wherein the device further comprises a first drive mechanism configured to move at least one of the pressure portion and the first holding portion in an extending direction of the hollow portion. ### Claim 13 (depends on 6) The method according to claim 6, wherein in the sucking gas from the second end of the tubular body, at the second end of the tubular body, the gas sucked by the negative pressure portion is larger in amount than gas discharged from the lumen of the tubular body. ### Claim 14 (depends on 6) The method according to claim 6, wherein a difference between a diameter of the hollow portion at the second end of the hollow body and an outer diameter at the second end of the tubular body is larger than a difference between a diameter of the hollow portion at the first end of the hollow body and a maximum outer diameter of the tubular body. ### Claim 15 (depends on 6) The method according to claim 6, wherein the device further comprises a support portion disposed between the hollow body and the pressure portion, the support portion supporting the tubular body. ### Claim 16 (depends on 6) The method according to claim 6, wherein the hollow body comprises a metal mold for blow molding. ### Claim 17 (depends on 1) The method according to claim 1, wherein the tubular body has the lumen penetrating from the first end of the tubular body to the second end of the tubular body. ### Claim 18 (depends on 1) The method according to claim 1, the method further comprises: holding a second end portion of the tubular body outside the tubular body after sucking gas from the second end of the tubular body while introducing pressurized gas into the lumen of the tubular body from the first end of the tubular body. ### Claim 19 (depends on 1) The method according to claim 1, the method further comprises: arranging the tubular body and a device configured to deliver the tubular body, the device comprising a hollow body having a hollow portion extending from a first end to a second end of the hollow body, the hollow portion being provided to penetrate from the first end to the second end of the hollow body, the hollow portion having a suction port at the second end, the suction port having an inner diameter larger than an outer diameter of the tubular body, before sucking gas from the second end of the tubular body while introducing pressurized gas into the lumen of the tubular body from the first end of the tubular body. ### Claim 20 (depends on 1) The method according to claim 1, wherein the tubular body is delivered into a hollow portion of a hollow body, the hollow portion extending from a first end to a second end of the hollow body.