# US 2026/0060652 A1 · Medical device and method of manufacturing medical device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0060652 A1 - Document ID: US20260060652A1 - Status: Published application - Kind: A1 - Application number: 19/383,788 - Filed: 2025-11-10 - Published: 2026-03-05 - Earliest claimed: 2023-05-19 - Assignees: Asahi Intecc Co., Ltd. - Applicants: Asahi Intecc Co., Ltd. - Inventors: Hirotomo SHIMIZU - Web page: https://patentgrep.com/patent/US20260060652A1 ## CPC - A61B 8/0891: {for diagnosis of blood vessels} - A61B 8/445: {Details of catheter construction} - A61B 8/12: in body cavities or body tracts, e.g. by using catheters - 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 25/0009: {Making of catheters or other medical or surgical tubes} - A61M 25/0021: {characterised by the form of the tubing (A61M25/0054 takes precedence)} - A61M 25/0045: {multi-layered, e.g. coated (coating materials A61L29/08)} - A61M 25/0108: {using radio-opaque or ultrasound markers} - B05B 15/50: Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter - 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)} - B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D) ## Abstract A medical device includes a first tube having a first lumen and a second tube having a second lumen, wherein the first tube is coupled to the second tube by a coating agent along at least one coupling portion in a longitudinal direction of the medical device. ## Claims ### Claim 1 A medical device comprising: a first tube having a first lumen; and a second tube having a second lumen, wherein the first tube is coupled to the second tube by a coating layer along at least one coupling portion in a longitudinal direction of the medical device. ### Claim 2 (depends on 1) The medical device according to claim 1, wherein the first lumen is configured to receive a sensor that acquires image information. ### Claim 3 (depends on 1) The medical device according to claim 1, wherein a section of the medical device defines an acoustic window, the acoustic window corresponding to a region where a wall portion of the second tube extends over an entire circumferential direction thereof, and the at least one coupling portion is provided in at least a part of the acoustic window in the longitudinal direction. ### Claim 4 (depends on 1) The medical device according to claim 1, wherein in a transverse section of the medical device taken through the at least one coupling portion, a space is formed between a common external tangent line to the first tube and the second tube and outer peripheries of the first tube and the second tube. ### Claim 5 (depends on 1) The medical device according to claim 1, wherein the coating layer is made from a hydrophilic coating base agent. ### Claim 6 (depends on 1) The medical device according to claim 1, comprising: a first marker having radiopacity; and a second marker that has radiopacity and provided closer to a proximal end side than the first marker, wherein the at least one coupling portion extends substantially entirely between the first marker and the second marker. ### Claim 7 (depends on 1) The medical device according to claim 1, wherein the at least one coupling portion includes: a first coupling portion; and a second coupling portion provided at a position away from the first coupling portion toward a proximal end side. ### Claim 8 (depends on 1) The medical device according to claim 1, wherein the coating layer includes an undercoat layer applied to outer peripheral surfaces of the first tube and the second tube, the undercoat layer coupling the first tube and the second tube. ### Claim 9 (depends on 8) The medical device according to claim 8, wherein the coating layer further includes an overcoat layer applied over the undercoat layer. ### Claim 10 (depends on 9) The medical device according to claim 9, wherein the overcoat layer is hydrophilic. ### Claim 11 A catheter, comprising: an elongate catheter body having a proximal end and a distal end, the catheter body including: a sensor tube defining a sensor lumen configured to receive an ultrasonic imaging sensor; and a guidewire tube defining a guidewire lumen configured to slidably receive a guidewire, the guidewire tube being positioned adjacent to the sensor tube, wherein the sensor tube and the guidewire tube are coupled to one another along a discrete coupling portion by a coating layer, the coating layer forming a thin film that adheres to outer surfaces of the sensor tube and the guidewire tube while providing a recess portion between the sensor tube and the guidewire tube. ### Claim 12 A method for manufacturing a medical device, the method comprising: placing a first tube having a first lumen adjacent to a second tube having a second lumen; applying a liquid coating agent to at least a portion of outer surfaces of the adjacent first and second tubes; and drying the liquid coating agent at a temperature below a melting point of the first tube and the second tube to form a solid coating layer that mechanically couples the first tube to the second tube.