# US 10,441,783 B2 · Medical tool employing a warning mechanism notifying that a rotational limit has been reached > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,441,783 B2 - Document ID: US10441783B2 - Status: Granted - Kind: B2 - Application number: 15/681,178 - Filed: 2017-08-18 - Published: 2018-02-22 - Granted: 2019-10-15 - Earliest claimed: 2016-08-19 - Assignees: Pacesetter, Inc. - Applicants: Pacesetter, Inc. - Inventors: Peter Nee; Bradley Knippel; Daniel Coyle; Jennifer Heisel; Bernhard Arnar; Brett Hillukka; Tracee Eidenschink; Thomas B. Eby; Paul Paspa; Joseph Ramon Callol; Thomas Robert Luhrs; Carl Lance Boling - Web page: https://patentgrep.com/patent/US10441783B2 ## CPC - A61N 1/057: {Anchoring means; Means for fixing the head inside the heart} - A61B 17/3468: {for implanting or removing devices, e.g. prostheses, implants, seeds, wires (devices for implanting seeds A61M37/0069)} - A61M 25/0082: {Catheter tip comprising a tool} - A61N 1/37205: {Microstimulators, e.g. implantable through a cannula} - A61N 1/375: Constructional arrangements, e.g. casings - A61N 1/37518: {Anchoring of the implants, e.g. fixation} - A61N 1/3756: {Casings with electrodes thereon, e.g. leadless stimulators} - A61B 2090/031: {torque limiting} - A61M 25/0136: {Handles therefor} - A61M 2207/00: Methods of manufacture, assembly or production - A61N 1/3627: {for treating a mechanical deficiency of the heart, e.g. congestive heart failure or cardiomyopathy} - A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B) - 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 medical tool includes a rotation mechanism that further includes a warning feature. The warning feature provides an indication when the rotation mechanism has achieved a number of rotations. ## Claims ### Claim 1 A medical tool comprising a handle including: a housing; a torque portion operably coupled to the housing and rotatable relative to the housing, the torque portion including a shaft including an outer circumferential surface and a helical thread portion radially outwardly extending from the outer circumferential surface of the shaft; a shuttle displaceable along the shaft via threaded interaction with the helical thread portion; and an electronic feedback mechanism interacting with the shuttle that provides an indication when the torque portion has rotated a first number of rotations, wherein: the electronic feedback mechanism comprises a variable resistance element interacting with the shuttle such that displacement of the shuttle along the shaft varies a resistance of the variable resistance element, the indication being provided when a number of rotations of the torque portion, as determined from the resistance of the variable resistance element, is the first number of rotations, and the variable resistance element is a conductive bellows coupled to the shuttle and the resistance of the conductive bellows varies in response to the conductive bellows being at least one of compressed or expanded in response to displacement of the shuttle along the shaft. ### Claim 2 (depends on 1) The medical tool of claim 1, wherein the indication is at least one of a visual indication, an audial indication, or a tactile indication. ### Claim 3 (depends on 1) The medical tool of claim 1, wherein the indication is a visual indication comprising illumination of a light emitting diode (LED). ### Claim 4 (depends on 1) The medical tool of claim 1, wherein the electronic feedback mechanism further comprises a switch activated by displacing the shuttle into a position on the shaft corresponding to the first number of rotations of the torque portion and the indication is provided in response to activation of the switch. ### Claim 5 (depends on 1) The medical tool of claim 1, further comprising a mechanical warning mechanism interacting with the shuttle that provides a tactile indication when the torque portion has rotated a second number of rotations, the second number of rotations being one of equal to or different than the first number of rotations. ### Claim 6 (depends on 1) The medical tool of claim 1, wherein the medical tool is a delivery system for delivering a leadless pacemaker into cardiac tissue. ### Claim 7 A delivery system for delivering a leadless pacemaker into cardiac tissue, the delivery system comprising a handle, wherein the handle includes: a housing; a torque portion operably coupled to the housing and rotatable relative to the housing; and an electronic feedback mechanism interacting with the torque portion that provides an indication when the torque portion has rotated a first number of rotations, wherein: the delivery system comprises a translatable body movable within the housing in response to rotation of the torque portion, the indication being provided in response to the body being translated into a position corresponding to the first number of rotations, the electronic feedback mechanism comprises a variable resistance element coupled to the translatable body such that displacement of the translatable body varies a resistance of the variable resistance element, the indication being provided when a number of rotations of the torque portion, as determined from the resistance of the variable resistance element, is the first number of rotations, and the variable resistance element is a conductive bellows coupled to the translatable body. ### Claim 8 (depends on 7) The delivery system of claim 7, wherein the indication is at least one of a visual indication, an audial indication, or a tactile indication. ### Claim 9 (depends on 7) The delivery system of claim 7, wherein the indication is a visual indication comprising illumination of a light emitting diode (LED). ### Claim 10 (depends on 7) The delivery system of claim 7, wherein the electronic feedback mechanism comprises a switch activated by displacing the translatable body into a position corresponding to the number of rotations of the torque portion and the indication is provided in response to activation of the switch. ### Claim 11 (depends on 7) The delivery system of claim 7 further comprising a mechanical warning mechanism interacting with the torque portion that provides a tactile indication when the torque portion has rotated a second number of rotations, the second number of rotations being one of equal to or different than the first number of rotations.