# US 11,027,093 B2 · Slide guide catheter and methods for use thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,027,093 B2 - Document ID: US11027093B2 - Status: Granted - Kind: B2 - Application number: 15/836,152 - Filed: 2017-12-08 - Published: 2018-06-14 - Granted: 2021-06-08 - Earliest claimed: 2016-12-08 - Assignees: Sanford Health - Applicants: Sanford Health - Inventors: Thomas Haldis; Alexander Drofa - Web page: https://patentgrep.com/patent/US11027093B2 ## CPC - A61M 25/0026: {Multi-lumen catheters with stationary elements (catheter assemblies comprising a catheter in combination with a guide tube, sheath or sleeve A61M2025/0681; catheters comprising telescoping coaxial elements A61M2025/0175)} - A61M 25/0043: {characterised by structural features} - A61M 25/0068: {Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure} - A61M 25/0113: {Mechanical advancing means, e.g. catheter dispensers} - A61M 25/0662: {Guide tubes} - A61M 25/09: Guide wires - A61M 25/008: {Strength or flexibility characteristics of the catheter tip} - A61M 2025/0004: {having two or more concentrically arranged tubes for forming a concentric catheter system} - A61M 2025/0006: {which can be secured against axial movement, e.g. by using a locking cuff} - A61M 2025/0175: {having telescopic features, interengaging nestable members movable in relations to one another} - A61M 2025/0687: {having means for atraumatic insertion in the body or protection of the tip of the sheath during insertion, e.g. special designs of dilators, needles or 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)} ## Abstract The present disclosure provides a catheter system and methods for use that includes (a) a first catheter having a first end and a second end, where the first catheter has a first diameter, (b) a second catheter having a first end and a second end, where the second catheter has a second diameter that is less than the first diameter of the first catheter, and where the second catheter is positioned at least partially within a lumen of the first catheter and is moveable relative to the first catheter, and (c) a wire having a first end and a second end, where the first end of the wire is coupled to the second catheter. ## Claims ### Claim 1 A catheter system comprising: a first catheter having a first end and a second end, wherein the first catheter has a first diameter; a second catheter having a first end and a second end, wherein the second catheter has a second diameter that is less than the first diameter of the first catheter, and wherein the second catheter is positioned at least partially within a lumen of the first catheter and is moveable relative to the first catheter such that the second catheter is advanced out of or retracted into the lumen of the first catheter, wherein a wall thickness of a portion of the second catheter at the first end of the second catheter is less than a wall thickness of a portion of the first catheter at the first end of the first catheter, and wherein a stiffness of a portion of the first catheter at the first end of the first catheter is greater than a stiffness of a portion of the second catheter at the first end of the second catheter; and a wire having a first end and a second end, wherein the first end of the wire is coupled to the second catheter, wherein a wall of the first catheter includes a conduit arranged therein in which the wire at least partially resides, wherein a first end of the conduit abuts the second end of the second catheter when the second catheter is fully retracted to prevent the first end of the second catheter from retracting past the first end of the first catheter and into the lumen of the first catheter. ### Claim 2 (depends on 1) The catheter system of claim 1, wherein the first catheter comprises a first material, and wherein the second catheter comprises a second material that is different than the first material. ### Claim 3 (depends on 2) The catheter system of claim 2, wherein the first material comprises an elastomer, a metal, a hydrophilic polymer, or a combination thereof. ### Claim 4 (depends on 2) The catheter system of claim 2, wherein the second material comprises an elastomer, a metal, a hydrophilic polymer, or a combination thereof. ### Claim 5 (depends on 1) The catheter system of claim 1, wherein the first catheter includes a plurality of braided metal strands arranged longitudinally or helically along at least a portion of the length of the first catheter. ### Claim 6 (depends on 1) The catheter system of claim 1, wherein at least one of the first catheter and the second catheter include a hydrophilic coating. ### Claim 7 (depends on 1) The catheter system of claim 1, wherein the second end of the wire is coupled to a linear slide configured to move the wire to cause the second catheter to move with respect to the first catheter. ### Claim 8 (depends on 1) The catheter system of claim 1, wherein the second end of the wire is coupled to a spooled wire system such that unwinding the spooled wire system advances the wire to cause the second catheter to move with respect to the first catheter. ### Claim 9 (depends on 1) The catheter system of claim 1, further comprising a locking system configured to lock the second catheter in place. ### Claim 10 (depends on 1) The catheter system of claim 1, wherein the first catheter is in mechanical communication with the second catheter via a rack and pinion system or via the wire that is externalized through the first catheter. ### Claim 11 (depends on 1) The catheter system of claim 1, wherein the first catheter has a length ranging from about 20 cm to about 110 cm. ### Claim 12 (depends on 1) The catheter system of claim 1, wherein the first diameter ranges from about 1.33 mm to about 9 mm. ### Claim 13 (depends on 1) The catheter system of claim 1, wherein the second catheter has a length ranging from about 10 cm to about 100 cm. ### Claim 14 (depends on 1) The catheter system of claim 1, wherein the second diameter ranges from about 1 mm to about 8.7 mm. ### Claim 15 (depends on 1) The catheter system of claim 1, wherein an overall length of the catheter system has a range of about 20 cm to about 160 cm when the second catheter is fully extended. ### Claim 16 (depends on 1) The catheter system of claim 1, wherein the wire comprises at least one braided wire. ### Claim 17 (depends on 1) The catheter system of claim 1, wherein the first end of the first catheter has a radius of curvature ranging from about 0 mm to about 170 mm. ### Claim 18 (depends on 1) The catheter system of claim 1, wherein the first end of the second catheter has a radius of curvature ranging from about 0 mm to about 170 mm. ### Claim 19 (depends on 1) The catheter system of claim 1, further comprising: a balloon coupled to the first end of the first catheter. ### Claim 20 (depends on 1) The catheter system of claim 1, further comprising: a third catheter having a first end and a second end, wherein the third catheter has a third diameter that is less than the second diameter, and wherein the third catheter is moveable relative to the second catheter. ### Claim 21 (depends on 20) The catheter system of claim 20, wherein the third catheter has a length ranging from about 140 cm to about 170 cm. ### Claim 22 (depends on 20) The catheter system of claim 20, wherein the third diameter has a range from about 0.025 mm to about 1 mm. ### Claim 23 (depends on 1) The catheter system of claim 1, further comprising a plurality of flush lines positioned on the second end of the first catheter. ### Claim 24 (depends on 1) The catheter system of claim 1, further comprising a dilator coupled to the first end of the second catheter. ### Claim 25 (depends on 24) The catheter system of claim 24, wherein the dilator has a length at least about 5 cm longer than an overall length of the catheter system when the second catheter is fully extended. ### Claim 26 (depends on 1) The catheter system of claim 1, wherein the second catheter has a first portion arranged at the first end a second portion arranged at the second end and a third portion arranged therebetween, wherein the first portion of the second catheter has wall thickness less than a wall thickness of the third portion of the second catheter and the wall thickness of the third portion of the second catheter is less than a wall thickness of the second portion of the second catheter. ### Claim 27 (depends on 26) The catheter system of claim 26, wherein an outer diameter of the first portion of the second catheter is the same as an outer diameter of the third portion of the second catheter. ### Claim 28 (depends on 27) The catheter system of claim 27, wherein an outer diameter of the second portion of the second catheter is greater than the outer diameter of the first portion and the outer diameter of the third portion of the second catheter. ### Claim 29 (depends on 1) The catheter system of claim 1, wherein the second catheter has a first portion arranged at the first end a second portion arranged at the second end and a third portion arranged there between, wherein the first portion of the second catheter has a durometer less than a durometer of the third portion of the second catheter and the durometer of the third portion of the second catheter is less than the durometer of the second portion of the second catheter. ### Claim 30 (depends on 1) The catheter system of claim 1, wherein the first catheter has a distal first section at the first end and a proximal second section at the second end, wherein the first catheter comprises an elastomer outer layer with a durometer in the distal first section that is lower than a durometer of the proximal second section. ### Claim 31 (depends on 1) A method comprising: introducing a guidewire into an arterial configuration via arterial access; loading the catheter system according to claim 1 onto the guidewire; moving the catheter system along the guidewire and introducing the first catheter into a first arterial configuration; and advancing, via the wire of the catheter system, the second catheter with respect to the first catheter to move the second catheter into a second arterial configuration. ### Claim 32 (depends on 31) The method of claim 31, further comprising: inflating a balloon coupled to the first end of the first catheter. ### Claim 33 (depends on 31) The method of claim 31, further comprising: advancing a treatment solution out of the second catheter and into the second arterial configuration. ### Claim 34 (depends on 31) The method of claim 31, further comprising: advancing a stem retriever though a third catheter and into the second arterial configuration or a third arterial configuration. ### Claim 35 (depends on 31) The method of claim 31, further comprising: advancing a coronary stem through the second catheter and into the second arterial configuration. ### Claim 36 (depends on 31) The method of claim 31, further comprising: advancing a clot retrieval device through the second catheter for pulmonary and venous thrombectomy. ### Claim 37 A catheter system comprising: a first catheter having a first end and a second end, wherein the first catheter has a first diameter; a second catheter having a first end and a second end, wherein the second catheter has a second diameter that is less than the first diameter of the first catheter, and wherein the second catheter is positioned at least partially within a lumen of the first catheter and is moveable relative to the first catheter such that the second catheter is advanced out of or retracted into the lumen of the first catheter, wherein a wall thickness of a portion of the second catheter at the first end of the second catheter is less than a wall thickness of a portion of the first catheter at the first end of the first catheter, and wherein a stiffness of a portion of the first catheter at the first end of the first catheter is greater than a stiffness of a portion of the second catheter at the first end of the second catheter; a wire having a first end and a second end, wherein the first end of the wire is coupled to the second catheter; and an external housing having a conduit is coupled to an exterior of the first catheter, wherein the wire is disposed within the conduit and extends through an opening in a wall of the first catheter to the second catheter. ### Claim 38 A catheter system comprising: a first catheter having a first end and a second end, wherein the first catheter has a first diameter; a second catheter having a first end and a second end, wherein the second catheter has a second diameter that is less than the first diameter of the first catheter, and wherein the second catheter is positioned at least partially within a lumen of the first catheter and is moveable relative to the first catheter such that the second catheter is advanced out of or retracted into the lumen of the first catheter, wherein a wall thickness of a portion of the second catheter at the first end of the second catheter is less than a wall thickness of a portion of the first catheter at the first end of the first catheter, and wherein a stiffness of a portion of the first catheter at the first end of the first catheter is greater than a stiffness of a portion of the second catheter at the first end of the second catheter; a wire having a first end and a second end, wherein the first end of the wire is coupled to the second catheter, wherein the second end of the wire is coupled to a threaded knob configured to rotate such that when the wire is unwound from the threaded knob the second catheter is advanced out of the first catheter and when the wire is wound around the threaded knob the second catheter is retracted into the first catheter.