# US 8,771,225 B2 · Balloon catheter > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,771,225 B2 - Document ID: US8771225B2 - Status: Granted - Kind: B2 - Application number: 13/814,605 - Filed: 2010-09-14 - Published: 2013-05-30 - Granted: 2014-07-08 - Earliest claimed: 2010-08-12 - Assignees: Yong Chul Ahn - Applicants: Yong Chul Ahn - Inventors: Yong Chul Ahn - Web page: https://patentgrep.com/patent/US8771225B2 ## CPC - A61M 25/1025: {Connections between catheter tubes and inflation tubes} - A61L 29/02: Inorganic materials - A61L 29/14: Materials characterised by their function or physical properties {, e.g. lubricating compositions} - A61L 29/18: Materials at least partially X-ray or laser opaque - A61M 25/007: {Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked} - A61M 25/0108: {using radio-opaque or ultrasound markers} - A61M 25/10: Balloon catheters ({A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02;} inflatable balloons for placing stents or stent-grafts A61F2/958 {; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00}) - A61L 2400/16: Materials with shape-memory or superelastic properties - A61M 25/0054: {with regions for increasing flexibility} - A61M 25/1036: {Making parts for balloon catheter systems, e.g. shafts or distal ends (A61M25/1029 takes precedence)} - A61M 2025/1079: {having radio-opaque markers in the region of the balloon} - 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: 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)} - A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K) ## Abstract A balloon catheter is configured so that a balloon can be easily inserted into the interior of a human body without using a separate wire. ## Claims ### Claim 1 A balloon catheter comprising: a first sub-tube, which extends in the lengthwise direction, has a first end and a second end, and has a first passage formed therein in order for a fluid to be injected therethrough; a second sub-tube, which is attached to an outer circumference of the first sub-tube and has a first end located at a same position as the first end of the first sub-tube, an extension section extending beyond the second end of the first sub-tube and having a second passage formed therein and a through-hole formed in an outer circumference thereof, and a second end having an opening communicating with the extension section, the second passage communicating with the first end of the first sub-tube in order for the fluid to be introduced from the first passage; and a balloon disposed on the extension section of the second sub-tube in order for the fluid to be introduced from the through-hole. ### Claim 2 (depends on 1) The balloon catheter as set forth in claim 1, wherein the extension section of the second sub-tube has a first identification mark attached thereto. ### Claim 3 (depends on 2) The balloon catheter as set forth in claim 2, wherein the first identification mark is formed of platinum, iridium, or an alloy thereof. ### Claim 4 (depends on 1) The balloon catheter as set forth in claim 1, further comprising a seal member, which is inserted into the opening of the extension section of the second sub-tube and seals the opening. ### Claim 5 (depends on 4) The balloon catheter as set forth in claim 4, wherein the seal member has a second identification mark attached thereto. ### Claim 6 (depends on 5) The balloon catheter as set forth in claim 5, wherein the seal member extends into the extension section of the second sub-tube. ### Claim 7 (depends on 1) The balloon catheter as set forth in claim 1, wherein the first sub-tube is formed of a metal. ### Claim 8 (depends on 1) The balloon catheter as set forth in claim 1, wherein the first sub-tube is formed of a shape memory alloy. ### Claim 9 (depends on 1) The balloon catheter as set forth in claim 1, wherein the second sub-tube is formed of a synthetic resin. ### Claim 10 (depends on 1) The balloon catheter as set forth in claim 1, further comprising a third sub-tube, which is connected with the second end of the first sub-tube, is disposed inside the second passage of the second sub-tube, and is formed so as to be able to extend in a lengthwise direction. ### Claim 11 (depends on 10) The balloon catheter as set forth in claim 10, wherein the third sub-tube is formed in a spiral coil shape. ### Claim 12 (depends on 10) The balloon catheter as set forth in claim 10, wherein the third sub-tube is formed of a metal. ### Claim 13 (depends on 1) The balloon catheter as set forth in claim 1, wherein the first sub-tube is formed in a spiral coil shape. ### Claim 14 (depends on 1) The balloon catheter as set forth in claim 1, further comprising: a protection tube, which is disposed on the outer circumference of the second sub-tube so as to be able to move in the lengthwise direction of the tube and protect the balloon; and a stopper member, which prevents the protection tube from arbitrarily moving in the lengthwise direction of the tube. ### Claim 15 (depends on 14) The balloon catheter as set forth in claim 14, wherein the stopper member includes: a first end having an inner diameter substantially identical to an outer diameter of the second sub-tube; a second end having a larger outer diameter than an inner diameter of the protection tube; and a slot cut between the first and second ends in a lengthwise direction of the stopper member. ### Claim 16 (depends on 14) The balloon catheter as set forth in claim 14, wherein the protection tube includes a grip. ### Claim 17 (depends on 14) The balloon catheter as set forth in claim 14, wherein the stopper member includes a grip. ### Claim 18 (depends on 14) The balloon catheter as set forth in claim 14, wherein the protection tube has an identification mark attached thereto. ### Claim 19 (depends on 1) The balloon catheter as set forth in claim 1, wherein the first sub-tube extends into the extension section of the second sub-tube.