# US 10,478,596 B2 · Locking mechanism for a medical device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,478,596 B2 - Document ID: US10478596B2 - Status: Granted - Kind: B2 - Application number: 15/098,101 - Filed: 2016-04-13 - Published: 2016-08-11 - Granted: 2019-11-19 - Earliest claimed: 2009-09-25 - Assignees: Boston Scientific Scimed, Inc. - Applicants: Boston Scientific Scimed, Inc. - Inventors: Jacob Graham; Stephen Derosier; Jeffrey Bean; John Golden - Web page: https://patentgrep.com/patent/US10478596B2 ## CPC - A61M 25/0136: {Handles therefor} - A61F 2/9517: {handle assemblies therefor} - A61M 25/0097: {characterised by the hub (tube connectors or tube couplings A61M39/10)} - A61M 25/01: Introducing, guiding, advancing, emplacing or holding catheters (A61M25/10 takes precedence) - A61M 39/1011: {Locking means for securing connection; Additional tamper safeties (A61M39/16 takes precedence)} - A61M 25/0105: {Steering means as part of the catheter or advancing means; Markers for positioning (systems for detection of markers A61B)} - A61M 25/0147: {with movable mechanical means, e.g. pull wires} - A61M 2025/0681: {Systems with catheter and outer tubing, e.g. sheath, sleeve or guide tube} - A61M 2025/09125: {Device for locking a guide wire in a fixed position with respect to the catheter or the human body} - 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)} - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) ## Abstract A locking mechanism for a medical device to selective lock a first elongate member from longitudinal movement relative to a second elongate member of the medical device. The locking mechanism includes a flexible tubular member disposed in a bore of a handle assembly of the medical device, and an actuator, such as a cam member having a cam or eccentric surface. Pivotable movement of the actuator from a first position to a second position compresses or deforms the flexible tubular member against the first elongate member to lock the first elongate member from longitudinal movement relative to the handle assembly. ## Claims ### Claim 1 A medical device assembly, comprising: an elongate member; a handle assembly coupled to the elongate member, the handle assembly including a housing having a locking mechanism, the locking mechanism comprising: a flexible tubular member positioned in the housing, a portion of the elongate member extending through the flexible tubular member; an actuator pivotably attached to the housing about a pivot axis, the actuator being pivotable between a first position and a second position, wherein the actuator includes a cam portion with an eccentric surface having a variable distance from the pivot axis; and a push member positioned between the flexible tubular member and the actuator, wherein a first surface of the push member is configured to contact the eccentric surface of the cam portion, and a second surface of the push member is configured to contact the flexible tubular member; wherein the push member does not compress the flexible tubular member against the elongate member when the actuator is in the first position, and the push member deforms an outer surface of the flexible tubular member inward to compress the flexible tubular member against the elongate member when the actuator is in the second position. ### Claim 2 (depends on 1) The medical device assembly of claim 1, wherein the elongate member extends through a lumen of the flexible tubular member. ### Claim 3 (depends on 2) The medical device assembly of claim 2, wherein the lumen of the flexible tubular member has a first diameter when the actuator is in the first position, and a second diameter when the actuator is in the second position, wherein the second diameter is less than the first diameter. ### Claim 4 (depends on 1) The medical device assembly of claim 1, wherein the elongate member is longitudinally movable within the flexible tubular member when the actuator is in the first position, and the elongate member is restrained from moving within the flexible tubular member when the actuator is in the second position. ### Claim 5 (depends on 1) The medical device assembly of claim 1, wherein the elongate member is restrained from moving within the flexible tubular member when the actuator is in the second position through increased frictional forces between the flexible tubular member and the elongate member. ### Claim 6 (depends on 1) The medical device assembly of claim 1, wherein the elongate member extends along a longitudinal axis; wherein the eccentric surface of the cam portion is located a first distance from the longitudinal axis of the elongate member when the actuator is in the first position, and the eccentric surface of the cam portion is located a second distance from the longitudinal axis of the elongate member when the actuator is in the second position, wherein the second distance is less than the first distance. ### Claim 7 (depends on 1) The medical device assembly of claim 1, wherein the housing includes a bore extending therethrough. ### Claim 8 (depends on 7) The medical device assembly of claim 7, wherein the bore includes a first portion having a first diameter and a second portion having a second diameter greater than the first diameter, wherein an end of the first portion abuts either a proximal end or a distal end of the second portion, and wherein the flexible tubular member is positioned in the second portion and extends from the proximal end to the distal end of the second portion. ### Claim 9 (depends on 8) The medical device assembly of claim 8, wherein the flexible tubular member has an outer diameter greater than the first diameter of the first portion of the bore. ### Claim 10 (depends on 9) The medical device assembly of claim 9, wherein a lumen of the flexible tubular member has a diameter substantially equal to the first diameter of the first portion of the bore.