# US 2023/0053337 A1 · Delivery guidewire and therapeutic treatment device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0053337 A1 - Document ID: US20230053337A1 - Status: Published application - Kind: A1 - Application number: 17/409,085 - Filed: 2021-08-23 - Published: 2023-02-23 - Earliest claimed: 2021-08-23 - Assignees: Microport Neurotech (Shanghai) Co., Ltd. - Applicants: Microport Neurotech (Shanghai) Co., Ltd. - Inventors: Ping LONG; Juan HOU; Hao TIAN - Web page: https://patentgrep.com/patent/US20230053337A1 ## CPC - A61M 25/09: Guide wires - A61F 2/962: having an outer sleeve - A61M 2025/09083: {having a coil around a core} - A61M 2025/09133: {having specific material compositions or coatings; Materials with specific mechanical behaviours, e.g. stiffness, strength to transmit torque} - A61M 2025/09166: {having radio-opaque features} - A61M 2025/09183: {having tools at the distal tip} - 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)} - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) ## Abstract The present invention relates to a delivery guidewire and a therapeutic treatment device including the delivery guidewire. The delivery guidewire includes a core shaft and a driving member arranged on the core shaft, and the driving member includes inner and outer components. The inner component is made of a metal and fixedly sleeved over the core shaft, and the outer component is made of a polymeric material and fixedly sleeved over the inner component. The inner component fixedly sleeved over the core shaft indirectly enhances attachment of the outer component to the core shaft, thus reducing the risk of loosening, wrinkling or displacement of the outer component and resulting in improved safety and reliability of the delivery guidewire during use. ## Claims ### Claim 1 A delivery guidewire, comprising a core shaft and a driving member arranged on the core shaft, the driving member comprising an inner component and an outer component, wherein the inner component is made of a metal and fixedly sleeved over the core shaft, and wherein the outer component is made of a polymeric material and fixedly sleeved over the inner component. ### Claim 2 (depends on 1) The delivery guidewire of claim 1, wherein the inner component has a recess that is totally or partially filled by the outer component. ### Claim 3 (depends on 2) The delivery guidewire of claim 2, wherein the outer component at least partially extends in the recess to connect with the core shaft. ### Claim 4 (depends on 2) The delivery guidewire of claim 2, wherein a groove is defined in an outer surface of the inner component to form the recess. ### Claim 5 (depends on 2) The delivery guidewire of claim 2, wherein the inner component comprises a plurality of coils arranged on the core shaft along an axis thereof, and the recess is formed between any adjacent two of the coils. ### Claim 6 (depends on 2) The delivery guidewire of claim 2, wherein the inner component has a spiral structure formed by spirally winding a wire on the core shaft along an axis thereof, and the recess is formed between adjacent turns of the spiraled wire. ### Claim 7 (depends on 2) The delivery guidewire of claim 2, wherein the inner component has a meshed tubular structure braided from wires, and the recess is formed by an opening of the meshed tubular structure. ### Claim 8 (depends on 7) The delivery guidewire of claim 7, wherein each of the wires has a diameter of 0.001 inch or less; the meshed tubular structure has a plurality of intersections formed by the wires, and a number of the intersections ranges from 15 to 50 per inch of the meshed tubular structure. ### Claim 9 (depends on 1) The delivery guidewire of claim 1, wherein the inner component comprises at least one tubular element that is entirely or partially wrapped by the outer component. ### Claim 10 (depends on 9) The delivery guidewire of claim 9, wherein the tubular element has a recess that is partially or entirely filled by the outer component, or wherein the inner component comprises at least two tubular elements, a recess is formed between any adjacent two of the tubular elements, and the recess is partially or entirely filled by the outer component. ### Claim 11 (depends on 1) The delivery guidewire of claim 1, wherein the inner component is formed of a radiographically visible metal. ### Claim 12 (depends on 11) The delivery guidewire of claim 11, wherein the metal is one or more selected from a group comprising platinum, gold, tungsten, a platinum-gold alloy, a platinum-tungsten alloy, a platinum-iridium alloy and a platinum-nickel alloy. ### Claim 13 (depends on 1) The delivery guidewire of claim 1, wherein the inner component is welded or adhesively bonded to the core shaft. ### Claim 14 (depends on 1) The delivery guidewire of claim 1, wherein the outer component is made of a material selected from any one or more of a group comprising a block polyether amide resin, a thermoplastic polyurethane elastomer, silicone, nylon and an acrylic polymer. ### Claim 15 (depends on 1) The delivery guidewire of claim 1, wherein the outer component wraps the inner component and extends to connect with the core shaft. ### Claim 16 (depends on 1) The delivery guidewire of claim 1, wherein the outer component is formed on the inner component by hot pressing and/or dip-coating, or adhesively attached to the inner component. ### Claim 17 (depends on 1) The delivery guidewire of claim 1, wherein the inner component is integrally formed with the core shaft. ### Claim 18 (depends on 1) The delivery guidewire of claims 1, wherein at least two said driving members are provided on the core shaft, and the at least two driving members are spaced from one another along an axis of the core shaft. ### Claim 19 (depends on 1) A therapeutic treatment device, comprising a delivery catheter, a medical implant and the delivery guidewire of claim 1, wherein the delivery catheter has an inner cavity extending therethrough axially, and the inner cavity is configured to receive the medical implant therein, wherein the medical implant is sleeved on the driving member and compressed in the inner cavity against a wall thereof. ### Claim 20 (depends on 19) The therapeutic treatment device of claim 19, wherein the inner cavity has a radial dimension ranging from 0.017 inches to 0.029 inches.