# US 2024/0198043 A1 · Catheter construction > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2024/0198043 A1 - Document ID: US20240198043A1 - Status: Published application - Kind: A1 - Application number: 18/590,542 - Filed: 2024-02-28 - Published: 2024-06-20 - Earliest claimed: 2022-07-30 - Assignees: Maduro Discovery, LLC - Applicants: Maduro Discovery, LLC - Inventors: Brian B. MARTIN - Web page: https://patentgrep.com/patent/US20240198043A1 ## CPC - A61M 25/0053: {having a variable stiffness along the longitudinal axis, e.g. by varying the pitch of the coil or braid} - A61L 29/04: Macromolecular materials - A61M 25/0023: {by the form of the lumen, e.g. cross-section, variable diameter} - A61M 25/0045: {multi-layered, e.g. coated (coating materials A61L29/08)} - A61M 25/005: {with embedded materials for reinforcement, e.g. wires, coils, braids} - A61M 25/0054: {with regions for increasing flexibility} - A61M 25/008: {Strength or flexibility characteristics of the catheter tip} - B32B 1/08: Tubular products - B32B 5/02: characterised by structural features of a {fibrous or filamentary} layer {(layer formed of metallic wires B32B15/02; layer formed of natural mineral fibres B32B19/02; layer formed of wood fibres B32B21/02)} - B32B 7/022: Mechanical properties - A61M 25/0067: {characterised by the distal end, e.g. tips (A61M25/0054, A61M25/04 take precedence; balloon catheters A61M25/10)} - A61M 2025/0081: {Soft tip} - B32B 2262/00: Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives - B32B 2262/02: Synthetic macromolecular fibres - B32B 2307/536: Hardness - B32B 2535/00: Medical equipment, e.g. bandage, prostheses or catheter - B32B 2597/00: Tubular articles, e.g. hoses, pipes - 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) - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM ## Abstract Polymeric tubing, for use with catheters or other medical devices, where the polymeric tubing can have regions of customized properties including, but not limited to, durometer, torque control, flexibility, axial strength, stiffness, etc. One variation of the device allows for transitions between regions to be configured such that there can be gradual or customized transitions between various regions such that the structural characteristics differential between the regions selectively designed. Additional variations include outer layers having a plurality of material sections extending in a spiral direction along the axial length to form a continuous wall of the outer layer. In certain variations, the structural characteristic differential is minimized or eliminated as compared to conventional catheters. ## Claims ### Claim 1 A medical tubing comprising: a tubular body having an axis extending lengthwise, the tubular body having a first region and a second region both extending along the axis and the first region and the second region having a wall with a plurality of material sections that extend spirally along the axis, where the plurality of material sections includes a first material section and a reinforcement material section; wherein in the first region, the first material section comprises a first hardness that is lower than or equal to a respective hardness of each adjacent material section and wherein the reinforcement material section comprises a first reinforcement hardness that is greater than both the first hardness and the respective hardness of each adjacent material section in the first region; and wherein in the second region, the first material section comprises a second hardness that is different from the first hardness and is less than the respective hardness of each adjacent material section in the second region. ### Claim 2 (depends on 1) The medical tubing of claim 1, wherein in the second region, the reinforcement material section comprises a second reinforcement hardness that is lower than the first reinforcement hardness. ### Claim 3 (depends on 1) The medical tubing of claim 1, further comprising an inner liner that is interior to the tubular body. ### Claim 4 (depends on 3) The medical tubing of claim 3, further comprising a reinforcement structure exterior to the inner liner. ### Claim 5 (depends on 4) The medical tubing of claim 4, wherein the reinforcement structure is embedded within the wall. ### Claim 6 (depends on 1) The medical tubing of claim 1, wherein the plurality of material sections extends in in a right-hand wind direction in the first region. ### Claim 7 (depends on 1) The medical tubing of claim 1, wherein the plurality of material sections extends in in a left-hand wind direction in the first region. ### Claim 8 (depends on 1) The medical tubing of claim 1, wherein at least one of the plurality of material sections comprises a non-fusable material. ### Claim 9 (depends on 1) The medical tubing of claim 1, further comprising a soft distal tip section. ### Claim 10 (depends on 9) The medical tubing of claim 9, wherein the soft distal tip section comprises a single material. ### Claim 11 (depends on 1) The medical tubing of claim 1, wherein the tubular body comprises a proximal region located proximally to both the first region and the second region, the proximal region comprising a single material.