# US 11,896,801 B2 · Kinkless infusion set for medical use > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,896,801 B2 - Document ID: US11896801B2 - Status: Granted - Kind: B2 - Application number: 16/714,701 - Filed: 2019-12-14 - Published: 2021-06-17 - Granted: 2024-02-13 - Earliest claimed: 2018-12-15 - Applicants: Mark H Scott; Leif Bowman; Nicholas John Foley - Inventors: Mark H Scott; Leif Bowman; Nicholas John Foley - Web page: https://patentgrep.com/patent/US11896801B2 ## CPC - A61M 5/158: Needles {for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body} - A61M 5/16813: {by controlling the degree of opening of the flow line} - A61M 5/16877: {Passive flow controllers; Devices for setting a flow rate (clamp-type valves A61M39/28)} - A61M 5/46: having means for controlling depth of insertion - A61M 5/142: Pressure infusion, e.g. using pumps - A61M 2005/1585: {Needle inserters} - A61M 2005/1586: {Holding accessories for holding infusion needles on the body} - A61M 2205/3303: Using a biosensor - A61M 2230/201: Glucose concentration - 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 Briefly, a kinkless infusion set has a setting control that engages a curved or helical cannula to simultaneously rotate the helical cannula as the helical cannula is moved toward a patients skin and then under the patient's skin to position the curved or helical cannula to a desired depth and position. In one example, the helical cannula is set between 3 mm and 5 mm under the patient's skin. Also, the curved or helical cannula may have side ports to allow medicine to be presented over a larger area for more effective therapeutic treatment. In some constructions the patient rotates the setting control, and in other cases the patient may push, pull or translate the setting control. ## Claims ### Claim 1 An infusion set, comprising: a base constructed to be attached to a patient's skin; a body storing a curved or helical cannula; a control knob that is operably connected the curved or helical cannula; a rack and pinon structure operably coupling the control knob to the curved or helical cannula; and wherein the control knob is engageable by the patient to simultaneously rotate the curved or helical cannula and move the curved or helical cannula from the body to the skin such that the cannula is substantially kink free as it rotates under the patient's skin. ### Claim 2 (depends on 1) The infusion set according to claim 1, wherein the patient engages the control knob to simultaneously rotate the curved or helical cannula and move the cannula from the body to a subcutaneous depth of between 3 mm and 5 mm. ### Claim 3 (depends on 1) The infusion set according to claim 1, the curved or helical cannula further comprising side ports. ### Claim 4 (depends on 1) The infusion set according to claim 1, the curved or helical cannula shaped to rotate into a subcutaneous depth of between 3 mm and 5 mm. ### Claim 5 (depends on 1) The infusion set according to claim 1, wherein the control knob is constructed to be rotated. ### Claim 6 (depends on 1) The infusion set according to claim 1, wherein the cannula has inner tubing chambers which may be filled with gas or fluid at or above ambient pressure. ### Claim 7 (depends on 6) The infusion set according to claim 6, wherein one or more of the inner tubing chambers may allow fluid to pass through sides of the cannula, rather than allowing fluid to reenter a main cannula chamber. ### Claim 8 (depends on 7) The infusion set according to claim 7, wherein one or more of the inner tubing chambers may allow fluid to pass through flow-controlling orifices of precise diameter to increase pressure within the chamber to contribute to the structural integrity of the cannula. ### Claim 9 (depends on 7) The infusion set according to claim 7, wherein one or more of the inner tubing chambers may allow fluid to pass through flow-controlling orifices of precise diameter to increase pressure within the chamber to determine the proportion of flow that passes through each port. ### Claim 10 An infusion set, comprising: a base constructed to be attached to a patient's skin; a body storing a curved or helical cannula; a control knob that is operably connected the curved or helical cannula; a rack that engages a first gear that is directly connected to the control knob, and where a second gear that is directly connected to the curved or helical cannula engages the rack; and wherein the control knob is engageable by the patient to simultaneously rotate the curved or helical cannula and move the curved or helical cannula from the body to the skin such that the cannula is substantially kink free as it rotates under the patient's skin. ### Claim 11 (depends on 10) The infusion set according to claim 10, wherein the patient engages the control knob to simultaneously rotate the curved or helical cannula and move the cannula from the-body to a subcutaneous depth of between 3 mm and 5 mm. ### Claim 12 (depends on 10) The infusion set according to claim 10, the curved or helical cannula further comprising side ports. ### Claim 13 (depends on 10) The infusion set according to claim 10, wherein the control knob is constructed to be rotated. ### Claim 14 (depends on 10) The infusion set according to claim 10, wherein the cannula has inner tubing chambers which may be filled with gas or fluid at or above ambient pressure. ### Claim 15 An infusion set, comprising: a base constructed to be attached to a patient's skin; a body storing a curved or helical cannula; a control knob that is operably connected the curved or helical cannula; variable gearing constructed so that a constant motion applied to the control knob causes the curved or helical cannula to move and rotate more slowly as the patient continues to move the control knob and wherein the control knob is engageable by the patient to simultaneously rotate the curved or helical cannula and move the curved or helical cannula from the body to the skin such that the cannula is substantially kink free as it rotates under the patient's skin. ### Claim 16 (depends on 10) The infusion set according to claim 10, wherein the first gear and the second gear have teeth at a different bias, and the rack has a first portion to engage the first gear and a second portion to engage the second gear. ### Claim 17 (depends on 15) The infusion set according to claim 15, wherein the patient engages the control knob to simultaneously rotate the curved or helical cannula and move the cannula from the-body to a subcutaneous depth of between 3 mm and 5 mm. ### Claim 18 (depends on 15) The infusion set according to claim 15, the curved or helical cannula further comprising side ports. ### Claim 19 (depends on 15) The infusion set according to claim 15, wherein the control knob is constructed to be rotated. ### Claim 20 (depends on 15) The infusion set according to claim 15, wherein the cannula has inner tubing chambers which may be filled with gas or fluid at or above ambient pressure.