# US 11,439,332 B2 · Methods and apparatus for selectively occluding the lumen of a needle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,439,332 B2 - Document ID: US11439332B2 - Status: Granted - Kind: B2 - Application number: 16/655,906 - Filed: 2019-10-17 - Published: 2020-09-17 - Granted: 2022-09-13 - Earliest claimed: 2013-03-12 - Assignees: Magnolia Medical Technologies, Inc. - Applicants: Magnolia Medical Technologies, Inc. - Inventors: Gregory J. Bullington; Jay M. Miazga; Shan E. Gaw; Richard G. Patton - Web page: https://patentgrep.com/patent/US11439332B2 ## CPC - A61B 5/150633: {Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves} - A61M 5/158: Needles {for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body} - A61M 5/16804: {Active flow controllers} - A61M 39/22: Valves or arrangement of valves {(A61M39/02, A61M39/0247, A61M39/16 take precedence; regulating valves in infusion systems A61M5/16881; in devices worn by the patient for the reception of urine, faeces, catamenial or other discharge, or in colostomy devices A61F5/4405)} - A61M 5/3291: {Shafts with additional lateral openings} - A61M 2005/1585: {Needle inserters} - A61M 2005/1587: {suitable for being connected to an infusion line after insertion into a patient} - A61M 2205/0205: Materials having antiseptic or antimicrobial properties, e.g. silver compounds, rubber with sterilising agent - A61M 2205/0238: the material being a coating or protective layer - A61M 2205/0266: Shape memory materials - 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 fluid transfer device for parenterally transferring fluid to and/or from a patient includes a housing, a needle, and an occlusion mechanism. The housing defines a fluid flow path and is couplable to a fluid reservoir. The needle has a distal end portion that is configured to be inserted into the patient and a proximal end portion that is configured to be fluidically coupled to the fluid flow path of the housing, and defines a lumen therebetween. The occlusion mechanism selectively controls a fluid flow between the needle and the fluid flow path. The occlusion mechanism includes an occlusion member that is movable between a first configuration where the lumen of the needle is obstructed during insertion into the patient and a second configuration where the lumen of the needle is unobstructed after the needle has been inserted into the patient allowing fluid transfer to or from the patient. ## Claims ### Claim 1 A device for parenterally transferring fluid to or from a patient, the device comprising: a housing that defines a fluid flow path, the housing configured to be coupleable to a fluid reservoir; a needle having a distal end portion, a proximal end portion, and defining a lumen therebetween, the distal end portion configured for insertion into the patient, the proximal end portion configured to be fluidically coupleable to the fluid flow path; and an occlusion mechanism operable to selectively control fluid flow between the needle and the fluid flow path, the occlusion mechanism including an occlusion member configured to selectively obstruct the lumen of the needle during insertion into the patient, the occlusion mechanism including a retractor disposed in the housing and coupled to the occlusion member, the occlusion mechanism configured to be moved between a first configuration such that the lumen of the needle is obstructed during insertion into the patient, and a second configuration such that the lumen of the needle is unobstructed after the needle has been inserted into the patient allowing fluid transfer to or from the patient, the retractor configured to move the occlusion member from a first position to a second position in which the occlusion member is retracted into the housing to place the occlusion mechanism in the second configuration. ### Claim 2 (depends on 1) The device of claim 1, wherein the occlusion member is a stylet configured to be disposed in the needle lumen in the first configuration, and manually removed from the lumen to place the occlusion mechanism in the second configuration. ### Claim 3 (depends on 1) The device of claim 1, wherein the retractor includes a coil spring. ### Claim 4 (depends on 1) The device of claim 1, wherein the occlusion member is disposed at the distal end portion of the needle in the first position. ### Claim 5 (depends on 4) The device of claim 4, wherein the needle has a beveled distal end and the occlusion member has a beveled distal end, the beveled distal ends of the needle and the occlusion member being substantially coplanar when the occlusion member is in the first position. ### Claim 6 A device for parenterally transferring fluid to or from a patient, the device comprising: a housing that defines a fluid flow path, the housing configured to be coupleable to a fluid reservoir; a needle having a distal end portion, a proximal end portion, and defining a lumen therebetween, the distal end portion configured for insertion into the patient, the proximal end portion configured to be fluidically coupleable to the fluid flow path; and an occlusion mechanism operable to selectively control fluid flow between the needle and the fluid flow path, the occlusion mechanism including an occlusion member configured to selectively obstruct the lumen of the needle during insertion into the patient, the occlusion mechanism configured to be moved between a first configuration such that the lumen of the needle is obstructed during insertion into the patient, and a second configuration such that the lumen of the needle is unobstructed after the needle has been inserted into the patient allowing fluid transfer to or from the patient, wherein the occlusion member is an outer sleeve movably disposed on the needle and configured to be movable from a first position to a second position to place the occlusion mechanism in the second configuration, the outer sleeve having a plurality of fingers configured to close over a chamber defined by the distal end portion of the needle when the outer sleeve is in the second position. ### Claim 7 (depends on 6) The device of claim 6, wherein the occlusion member is disposed at the distal end portion of the needle in the first position. ### Claim 8 (depends on 6) The device of claim 6, wherein the needle has a beveled distal end that defines the chamber. ### Claim 9 (depends on 6) The device of claim 6, wherein the distal end portion of the needle forms the chamber and a port proximal to the chamber and in fluid communication with the lumen of the needle. ### Claim 10 (depends on 9) The device of claim 9, wherein the port is obstructed when the outer sleeve is in the first position and substantially unobstructed when the outer sleeve is in the second position. ### Claim 11 (depends on 9) The device of claim 9, wherein the port includes a plurality of apertures disposed in the distal end portion of the needle proximal to the chamber. ### Claim 12 (depends on 6) The device of claim 6, wherein the outer sleeve is configured slide proximally distally from the first position to the second position. ### Claim 13 (depends on 6) The device of claim 6, wherein the chamber is fluidically isolated from the needle lumen, the chamber configured to receive at least one of tissue, bodily fluid, and contaminants upon insertion of the needle in to the patient. ### Claim 14 A device for parenterally transferring fluid to or from a patient, the device comprising: a housing that defines a fluid flow path, the housing configured to be coupleable to a fluid reservoir; a needle having a distal end portion, a proximal end portion, and defining a lumen therebetween, the distal end portion configured for insertion into the patient and defining a chamber fluidically isolated from the lumen that receives at least one of tissue, bodily fluid, or contaminants upon insertion of the needle in the patient, the proximal end portion configured to be fluidically coupleable to the fluid flow path; and an occlusion mechanism operable to selectively control fluid flow between the needle and the fluid flow path, the occlusion mechanism including an occlusion member configured to selectively obstruct the lumen of the needle during insertion into the patient, the occlusion mechanism configured to be moved between a first configuration such that the lumen of the needle is obstructed during insertion into the patient, and a second configuration such that the lumen of the needle is unobstructed after the needle has been inserted into the patient allowing fluid transfer to or from the patient, wherein the occlusion member is an outer sleeve movably disposed on the needle and configured to be movable from a first position to a second position to place the occlusion mechanism in the second configuration. ### Claim 15 (depends on 14) The device of claim 14, wherein the occlusion member is disposed at the distal end portion of the needle in the first position. ### Claim 16 (depends on 14) The device of claim 14, wherein the outer sleeve has a plurality of fingers configured to close over the chamber defined by the distal end portion in the first position. ### Claim 17 (depends on 14) The device of claim 14, wherein the needle has a port in fluid communication with the lumen disposed proximal the chamber defined by the distal end portion. ### Claim 18 (depends on 17) The device of claim 17, wherein the port is obstructed when the outer sleeve is in the first position and substantially unobstructed when the outer sleeve is in the second position. ### Claim 19 (depends on 17) The device of claim 17, wherein the port includes a plurality of apertures disposed in the distal end portion of the needle.