# US 11,998,234 B2 · Percutaneous introducer, particularly for flexible drainage tubes and with various profiles > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,998,234 B2 - Document ID: US11998234B2 - Status: Granted - Kind: B2 - Application number: 16/963,458 - Filed: 2018-08-27 - Published: 2021-02-18 - Granted: 2024-06-04 - Earliest claimed: 2018-01-23 - Assignees: Redax S.P.A. - Applicants: Redax S.P.A. - Inventors: Lucio Gibertoni - Web page: https://patentgrep.com/patent/US11998234B2 ## CPC - A61B 17/3415: {for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters (A61B17/3417 takes precedence; body piercing catheter guide needles A61M25/06)} - A61B 17/32002: {with continuously rotating, oscillating or reciprocating cutting instruments} - A61B 17/3417: {Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating (syringe needles A61M5/32; dilators A61M29/00)} - A61B 17/3423: {Access ports, e.g. toroid shape introducers for instruments or hands (access sites for liquids A61M39/0247)} - A61B 17/3496: {Protecting sleeves or inner probes; Retractable tips (for protecting body piercing guide needles A61M25/0612)} - A61B 17/3476: {Powered trocars, e.g. electrosurgical cutting, lasers, powered knives} - A61B 2017/320028: {with reciprocating movements} - A61B 2017/32113: {with extendable or retractable guard or blade} - A61B 2017/3454: {Details of tips} - A61M 25/0662: {Guide tubes} - A61M 2025/0681: {Systems with catheter and outer tubing, e.g. sheath, sleeve or guide tube} - 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)} ## Abstract A percutaneous introducer, particularly for flexible drainage tubes and with various profiles, includes a main body, the main body having a longitudinally extended tubular element arranged in the distal portion of the main body. The tubular element has a terminal arranged at the distal end of the tubular element. The percutaneous introducer has a sliding body which includes a longitudinally extended obturator arranged in the distal portion of the sliding body, the obturator being inserted and being movable longitudinally within the tubular element of the main body. The obturator includes a cutting blade arranged and fixed at the distal end of the obturator. The percutaneous introducer includes a return and positioning spring adapted to return the cutting blade to a retracted position within its seat, following the controlled exit of the cutting blade through a passage slot arranged in the terminal of the tubular element. ## Claims ### Claim 1 A percutaneous introducer comprising: a main body comprising a longitudinally extended tubular element arranged in the distal portion of said main body, said longitudinally extended tubular element comprising a terminal arranged at a distal end of said longitudinally extended tubular element; a sliding body comprising a longitudinally extended obturator arranged in a distal portion of said sliding body, said longitudinally extended obturator being inserted and being movable longitudinally within said longitudinally extended tubular element of said main body, said longitudinally extended obturator comprising a cutting blade arranged and fixed at a distal end of said longitudinally extended obturator; and a return and positioning spring adapted to return said cutting blade to a retracted position within its seat, following a controlled exit of said cutting blade through a passage slot arranged in said terminal of said longitudinally extended tubular element, an advancement movement of the sliding body compressing the return and positioning spring, which returns the cutting blade to the retracted position within its own seat as soon as a physician releases a pusher pin of the sliding body. ### Claim 2 (depends on 1) The percutaneous introducer according to claim 1, wherein said main body comprises a ring arranged in a proximal portion of said main body, said ring being associated with a proximal end of said longitudinally extended tubular element. ### Claim 3 (depends on 2) The percutaneous introducer according to claim 2, wherein said main body comprises a wing associated with said ring and being arranged on an opposite side with respect to said longitudinally extended tubular element. ### Claim 4 (depends on 1) The percutaneous introducer according to claim 1, wherein said sliding body comprises said pusher pin arranged in a proximal portion of said sliding body and associated with a proximal end of said obturator. ### Claim 5 (depends on 1) The percutaneous introducer according to claim 1, further comprising a lid adapted to close a first opening of said main body which is arranged in a proximal face of said main body. ### Claim 6 (depends on 4) The percutaneous introducer according to claim 4, wherein said sliding body comprises a longitudinally extended tubular body arranged in the proximal portion of said sliding body, said longitudinally extended tubular body being inserted and movable longitudinally within a tubular portion of said main body. ### Claim 7 (depends on 6) The percutaneous introducer according to claim 6, wherein said longitudinally extended tubular body comprises a partition, a proximal end of said longitudinally extended obturator being engaged on a distal face of said partition. ### Claim 8 (depends on 5) The percutaneous introducer according to claim 5, further comprising a sliding carriage disposed in a second opening of said main body arranged in a distal face of said main body, said sliding carriage being longitudinally movable within said main body, said sliding carriage comprising a rotating mechanism engaged on a rib of said tubular body and is adapted to load and release said sliding body. ### Claim 9 (depends on 8) The percutaneous introducer according to claim 8, wherein said main body comprises a loading and release spring adapted to be compressed by said tubular body integral with said sliding carriage and then released by means of said rotating mechanism, causing said controlled exit of said cutting blade. ### Claim 10 (depends on 9) The percutaneous introducer according to claim 9, wherein said loading and release spring is engaged, at one end, on a pivot arranged in the distal face of said lid and, at the other end, on the proximal face of said partition of said tubular body. ### Claim 11 (depends on 8) The percutaneous introducer according to claim 8, wherein said main body comprises a preloading and return spring adapted to return said sliding carriage to the extended position. ### Claim 12 (depends on 11) The percutaneous introducer according to claim 11, wherein said preloading and return spring is engaged, at one end, on a pivot arranged in the distal face of said lid and, at the other end, on a pivot arranged in the proximal face of said sliding carriage. ### Claim 13 (depends on 1) The percutaneous introducer according to claim 1, wherein said terminal of said longitudinally extended tubular element is shaped like a recorder mouthpiece. ### Claim 14 A kit for inserting surgical drainage tubes, comprising a percutaneous introducer comprising a main body comprising a longitudinally extended tubular element arranged in the distal portion of said main body, said longitudinally extended tubular element comprising a terminal arranged at a distal end of said longitudinally extended tubular element; a sliding body comprising a longitudinally extended obturator arranged in a distal portion of said sliding body, said longitudinally extended obturator being inserted and being movable longitudinally within said longitudinally extended tubular element of said main body, said longitudinally extended obturator comprising a cutting blade arranged and fixed at a distal end of said longitudinally extended obturator; and a return and positioning spring adapted to return said cutting blade to a retracted position within its seat, following a controlled exit of said cutting blade through a passage slot arranged in said terminal of said longitudinally extended tubular element, and a longitudinally extended positioning device configured to guide an insertion of a surgical drainage tube through a percutaneous access, wherein said longitudinally extended positioning device is a longitudinally extended monolithic body having a longitudinally extended seat open upward for the accommodation of said surgical drainage tube, said seat comprising a plurality of raised portions arranged along its internal surface, a pair of flexible wings configured to retain said surgical drainage tube within said seat, and a distal terminal configured to facilitate the insertion of said positioning device inside said percutaneous access. ### Claim 15 (depends on 14) The kit for inserting surgical drainage tubes according to claim 14, wherein said longitudinally extended positioning device comprises a lower half-shell body and an upper half-shell body, both of which are longitudinally extended, a coupling between said lower half-shell body and said upper half-shell body creating a longitudinally extended seat which is closed for the accommodation of said surgical drainage tube, said lower half-shell body and said upper half-shell body comprising respective wings configured to separate or uncouple said half-shell bodies and to extract said longitudinally extended positioning device from said percutaneous access, said lower half-shell body comprising a distal terminal configured to facilitate an insertion of said longitudinally extended positioning device within a percutaneous access. ### Claim 16 A percutaneous introducer comprising: a main body comprising a longitudinally extended tubular element arranged in the distal portion of said main body, said longitudinally extended tubular element comprising a terminal arranged at a distal end of said longitudinally extended tubular element; a sliding body comprising a longitudinally extended obturator arranged in a distal portion of said sliding body, said longitudinally extended obturator being inserted and being movable longitudinally within said longitudinally extended tubular element of said main body, said longitudinally extended obturator comprising a cutting blade arranged and fixed at a distal end of said longitudinally extended obturator; and a return and positioning spring adapted to return said cutting blade to a retracted position within its seat, following a controlled exit of said cutting blade through a passage slot arranged in said terminal of said longitudinally extended tubular element, and further comprising a lid adapted to close a first opening of said main body which is arranged in a proximal face of said main body, and also further comprising a sliding carriage disposed in a second opening of said main body arranged in a distal face of said main body, said sliding carriage being longitudinally movable within said main body, said sliding carriage comprising a rotating mechanism engaged on a rib of said tubular body and is adapted to load and release said sliding body.