# US 7,744,572 B2 · Catheter anchoring system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,744,572 B2 - Document ID: US7744572B2 - Status: Granted - Kind: B2 - Application number: 12/252,309 - Filed: 2008-10-15 - Published: 2009-02-12 - Granted: 2010-06-29 - Earliest claimed: 1993-03-19 - Assignees: Venetec International, Inc. - Inventors: Steven F. Bierman - Web page: https://patentgrep.com/patent/US7744572B2 ## CPC - A61M 25/02: Holding devices, e.g. on the body - A61M 2025/024: {having a clip or clamp system} - A61M 2025/0266: {using pads, patches, tapes or the like} - A61M 2025/0273: {having slits to place the pad around a catheter puncturing site} - Y10S 128/26: Cannula supporters - 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)} - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ## Abstract A catheter anchoring system is provided to securely anchor to a patient's skin a catheter and fluid supply tube interconnection. The anchoring system comprises a retainer configured to receive a catheter adaptor in a variety of positions. The adaptor interconnects the catheter and the fluid supply tube. In one embodiment the adaptor has a radial recess that circumscribes the adaptor. The anchoring system additionally includes a flexible, adhesive anchor pad which can supports a tube clip, as well as the retainer. The retainer includes a channel that is configured to receive the adaptor in a snap-fit manner. The retainer also includes a plurality of laterally arranged projections that extend from a channel wall and into a channel. Each radial recess is sized to receive and to capture at least a portion of the projection of the retainer so as to inhibit the adaptor from moving within the channel. ## Claims ### Claim 1 An anchoring device for a catheter having an elongated tubular body with an adaptor having an inwardly extending member, the device comprising: a retainer having a channel section extending along a longitudinal axis of the retainer and configured to receive at least a portion of the adaptor of the catheter, the channel section including a first portion, a second portion, and a third portion, the second portion being disposed between the first and third portions and including at least two projections, the projections extending toward the longitudinal axis in a lateral direction and being configured to engage the inwardly extending member of the adaptor in a manner inhibiting longitudinal motion of the adaptor through the retainer, and a longitudinal slot along said retainer through which the adaptor can pass, the slot having a lateral width less than a diameter of the channel section, wherein a cross section of at least a portion of the channel section tapers along its length; and a flexible anchor pad having an upper surface upon which the retainer is disposed. ### Claim 2 (depends on 1) An anchoring device according to claim 1, wherein the axis of the channel section is disposed at an acute angle relative to the upper surface of the anchor pad. ### Claim 3 (depends on 1) An anchoring device according to claim 1, wherein the channel section of the retainer has a truncated circular cross-sectional shape and surrounds at least a portion of said adaptor through an arc of greater than 180 degrees about the longitudinal axis of the channel section when the adaptor is received by the channel section. ### Claim 4 (depends on 1) An anchoring device according to claim 1, wherein the channel section has a generally conical shape. ### Claim 5 (depends on 1) An anchoring device according to claim 1, wherein the at least two projections of the retainer define a generally annular ring which projects into the channel section toward the longitudinal axis of the retainer. ### Claim 6 (depends on 1) An anchoring device according to claim 1, wherein the retainer further comprises a second channel section extending along the longitudinal axis of the retainer, the cross section of the second channel section tapering along its length. ### Claim 7 (depends on 6) An anchoring device according to claim 6, wherein the second channel section has a generally circular shape of a radius of curvature generally matching that of a corresponding portion of the catheter adaptor received by the second channel section. ### Claim 8 (depends on 1) An anchoring device according to claim 1, wherein each projection being so dimensioned to engage the outwardly extending member of the adaptor to inhibit the catheter from moving in a longitudinal direction. ### Claim 9 (depends on 8) An anchoring device according to claim 8, wherein the at least two projections are positioned within the channel section. ### Claim 10 (depends on 8) An anchoring device according to claim 8, wherein the at least two projections are positioned outside of the channel section. ### Claim 11 (depends on 8) An anchoring device according to claim 8, wherein the projections are arranged next to each other along the longitudinal axis so as to provide multiple positions along the retainer to receive the catheter adaptor. ### Claim 12 A catheterization system comprising: a catheter including an adaptor having a body with at least one inwardly extending member; and a retainer including a channel that extends about a longitudinal axis, the channel generally having a truncated cross-sectional shape with an opening that lies generally parallel to the longitudinal axis, the channel including a first portion, a second portion, and a third portion, the second portion being disposed between the first and third portions and including at least two projections, the projections extending toward the longitudinal axis in a lateral direction and being configured to engage the inwardly extending member of the adaptor in a manner inhibiting longitudinal motion of the adaptor through the retainer, and the channel extending about the longitudinal axis at least to an extent where the channel surrounds at least half of the adaptor body when the adaptor body is disposed within the channel, wherein a cross section of at least a portion of the channel tapers along its length. ### Claim 13 (depends on 12) A catheterization system as in claim 12, wherein the adaptor is affixed to a body of the catheter. ### Claim 14 (depends on 12) A catheterization system as in claim 12, wherein the adaptor is permanently attached to a body of the catheter. ### Claim 15 (depends on 12) A catheterization system as in claim 12 additionally comprising a flexible anchor pad having an adhesive bottom surface and a top surface on which at least a portion of said retainer is mounted. ### Claim 16 (depends on 12) A catheterization system as in claim 12, wherein the channel has a generally circular shape of a radius of curvature that generally matches that of a conical shaped portion of the catheter adaptor. ### Claim 17 (depends on 12) A catheterization system as in claim 12, wherein the catheter adaptor comprises a conical-shaped hub. ### Claim 18 (depends on 12) A catheterization system as in claim 12, wherein the channel comprises a first channel portion and a second channel portion, said first and second channel portions having generally arcuate shapes of a radius of curvature generally matching that of a corresponding portion of the catheter adaptor received by the respective channel portions. ### Claim 19 (depends on 18) A catheterization system as in claim 18, wherein at least one of the first and second channel portions have a generally conical shape. ### Claim 20 (depends on 12) A catheterization system as in claim 12, wherein the adaptor of the catheter comprises additional inwardly extending members, the additional members being located at different longitudinal positions along the length of the adaptor. ### Claim 21 A securement system for an elongated medical article comprising an adaptor including a body defined about a longitudinal axis, and a retainer including a first side and a second side that together define a space of sufficient size to receive a portion of the adaptor, the space including a first portion, a second portion, and a third portion, the second portion being disposed between the first and third portions and including at least two projections, the projections extending toward the longitudinal axis in a lateral direction, the retainer receiving at least a portion of the adaptor within the space, the at least two projections being configured so as to cooperate with the adaptor in a manner substantially inhibiting axial motion of the adaptor through the retainer, and wherein a cross section of at least a portion of the space tapers along its length. ### Claim 22 (depends on 21) A securement system as in claim 21, wherein at least a portion of the retainer has a truncated cross-sectional shape with an opening parallel to the longitudinal axis and said portion is sized to surround at least a part of the adaptor through an arc of greater than 180° about the longitudinal axis. ### Claim 23 (depends on 21) A securement system as in claim 21, wherein the projection of the retainer comprises a generally annular ring which extends inwardly toward the longitudinal axis of the retainer from the first and second sides. ### Claim 24 (depends on 21) A securement system as in claim 21, wherein the defined space has a generally arcuate shape. ### Claim 25 (depends on 21) A securement system as in claim 21, wherein the defined space has a generally conical shape truncated along one side. ### Claim 26 (depends on 21) A securement system as in claim 21, wherein the adaptor comprises a conical-shaped hub. ### Claim 27 (depends on 21) A securement system as in claim 21 additionally comprising a flexible anchor pad having an adhesive bottom surface and a top surface on which said retainer is mounted. ### Claim 28 (depends on 21) A securement system as in claim 21, wherein the defined space has a generally arcuate shape of a radius of curvature that generally matches that of at least a portion of the adaptor.