# US 11,439,420 B2 · Nasal suction instrument with interchangeable tip insert > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,439,420 B2 - Document ID: US11439420B2 - Status: Granted - Kind: B2 - Application number: 16/676,502 - Filed: 2019-11-07 - Published: 2020-06-11 - Granted: 2022-09-13 - Earliest claimed: 2018-12-11 - Assignees: Acclarent, Inc. - Applicants: Acclarent, Inc. - Inventors: Babak Ebrahimi; Ehsan Shameli - Web page: https://patentgrep.com/patent/US11439420B2 ## CPC - A61B 17/24: for use in the oral cavity, larynx, bronchial passages or nose (for medical inspection of cavities or tubes in the body A61B1/00); Tongue scrapers - A61B 34/20: Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis - A61M 1/70: {Gravity drainage systems (drainage containers not being adapted for subjection to vacuum A61M1/69)} - A61M 1/76: {Handpieces (specially for suction-irrigation A61M1/774, aspiration tips A61M1/84)} - A61M 1/84: {Drainage tubes; Aspiration tips (for negative pressure wound therapy A61M1/90; for surgical cutting instruments A61B17/32)} - A61B 90/98: using electromagnetic means, e.g. transponders - A61B 2017/0046: {with a releasable handle; with handle and operating part separable} - A61B 2017/00477: {Coupling (A61B2017/0046 takes precedence)} - A61B 2017/246: {for cleaning of the nose} - A61B 2034/2051: {Electromagnetic tracking systems} - A61B 2034/2072: {Reference field transducer attached to an instrument or patient} - A61B 2090/0803: {Counting the number of times an instrument is used} - A61B 2217/005: with suction drainage system - A61M 25/0127: {Magnetic means; Magnetic markers} - A61M 2210/0618: Nose - A61M 2210/0681: Sinus (maxillaris) - 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 suction instrument includes a proximal end, a distal end configured to be positioned within or adjacent to an anatomical passageway of a patient, and a suction lumen extending between the proximal and distal ends. The suction lumen is configured to provide suction at the distal end. A navigation sensor is disposed along a portion of the suction lumen and is operable to generate an electrical signal corresponding to a location of the portion within the patient. A coupling feature is disposed at the proximal end and is configured to releasably couple the proximal end with a body. ## Claims ### Claim 1 A suction instrument, comprising: (a) a proximal end; (b) a distal end, wherein the distal end is configured to be positioned within or adjacent to an anatomical passageway of a patient; (c) a suction lumen extending between the proximal and distal ends, wherein the suction lumen is configured to provide suction at the distal end; (d) a navigation sensor disposed along a portion of the suction lumen, wherein the navigation sensor is operable to generate an electrical signal corresponding to a location of the portion within the patient; (e) a coupling feature disposed at the proximal end, wherein the coupling feature comprises a first coupling feature configured to releasably couple the proximal end with a body; (f) a body having a second coupling feature configured to releasably engage the first coupling feature to thereby releasably couple the suction lumen with the body; and (g) a connector block disposed at a proximal end of the suction lumen, wherein the connector block provides the first coupling feature. ### Claim 2 (depends on 1) The suction instrument of claim 1, further comprising a suction tube, wherein the suction tube defines the suction lumen. ### Claim 3 (depends on 1) The suction instrument of claim 1, wherein the navigation sensor is disposed at the distal end. ### Claim 4 (depends on 1) The suction instrument of claim 1, wherein the navigation sensor comprises an electromagnetic sensor. ### Claim 5 (depends on 4) The suction instrument of claim 4, wherein the electromagnetic sensor comprises an electrically conductive coil. ### Claim 6 (depends on 1) The suction instrument of claim 1, further comprising an electrical connector disposed at the proximal end, wherein the electrical connector is electrically coupled with the navigation sensor. ### Claim 7 (depends on 1) The suction instrument of claim 1, further comprising an electrically erasable programmable read-only memory, wherein the electrically erasable programmable read-only memory is operable to store data relating to the suction instrument. ### Claim 8 (depends on 1) The suction instrument of claim 1, wherein the suction lumen extends distally relative to the connector block. ### Claim 9 (depends on 8) The suction instrument of claim 8, wherein the coupling feature comprises at least one of a projection or a recess provided by the connector block. ### Claim 10 (depends on 1) The suction instrument of claim 1, wherein the body includes a passageway having a proximal end configured to fluidly couple with a suction source, and a distal end configured to fluidly couple with the suction lumen when the first coupling feature is engaged with the second coupling feature. ### Claim 11 (depends on 1) The suction instrument of claim 1, wherein the body includes a vent opening that fluidly communicates with the passageway and the suction lumen, wherein the vent opening is configured to be selectively closed to communicate suction from the suction source to the suction lumen. ### Claim 12 (depends on 1) The suction instrument of claim 1, further comprising: (a) a first electrical connector disposed at a proximal end of the suction lumen, wherein the first electrical connector is electrically coupled with the navigation sensor, and (b) a second electrical connector disposed at a distal end of the body, wherein the second electrical connector is configured to communicate with a processor, wherein the first and second electrical connectors are configured to electrical couple together when the suction lumen is coupled with the body to thereby transmit the electrical signal from the navigation sensor to the processor. ### Claim 13 (depends on 1) The suction instrument of claim 1, further comprising: (a) a first electrically erasable programmable read-only memory housed within the connector block, wherein the first electrically erasable programmable read-only memory is operable to store data relating to at least one of the connector block or the suction lumen, and (b) a second electrically erasable programmable read-only memory housed within the body, wherein the second electrically erasable programmable read-only memory is operable to store data relating to the body. ### Claim 14 A suction instrument, comprising: (a) a body comprising: (i) a proximal end configured to couple with a suction source, and (ii) a distal end having a first coupling feature configured to releasably couple with a second coupling feature of an attachable member having a suction lumen, wherein the first coupling feature is further configured to promote alignment of a first electrical connector with a second electrical connector during attachment of the attachable member to the body, wherein a distal end of the attachable member is configured to be positioned within or adjacent to an anatomical passageway of a patient, wherein the body is configured to be gripped by a user for manipulating the attachable member relative to the patient; (b) a passageway extending through the body, wherein the passageway comprises: (i) a proximal end configured to fluidly couple with the suction source, and (ii) a distal end configured to fluidly couple with the suction lumen of the attachable member, wherein the suction passageway is configured to communicate suction from the suction source to the suction lumen; and (c) the first electrical connector arranged at the distal end of the body, wherein the first electrical connector is configured to releasably couple with the second electrical connector of the attachable member to receive an electrical signal that corresponds to a location of the attachable member within the patient. ### Claim 15 (depends on 14) The suction instrument of claim 14, further comprising an electrically erasable programmable read-only memory housed within the body, wherein the electrically erasable programmable read-only memory is operable to store data relating to the body. ### Claim 16 A suction instrument, comprising: (a) a body, wherein the body comprises: (i) a first coupling feature; and (ii) a first electrical connector configured to electrically couple with a processor; and (b) a cannula assembly configured to extend distally from the body, wherein the cannula assembly comprises: (i) a suction tube having an open distal end configured to provide suction within or adjacent to an anatomical passageway of a patient, (ii) a navigation sensor disposed along a portion of the suction tube, wherein the navigation sensor is operable to generate an electrical signal corresponding to a location of the portion within the patient, (iii) a second coupling feature disposed at a proximal end of the suction tube, wherein the second coupling feature is configured to releasably engage the first coupling feature to thereby couple the suction tube with the body, and (iv) a second electrical connector electrically coupled with the navigation sensor, wherein the first and second electrical connectors are configured to releasably couple together to transmit the electrical signal from the navigation sensor to the processor.