# US 11,298,151 B2 · Device, system and method for pericardial access > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,298,151 B2 - Document ID: US11298151B2 - Status: Granted - Kind: B2 - Application number: 16/623,054 - Filed: 2018-06-17 - Published: 2020-05-28 - Granted: 2022-04-12 - Earliest claimed: 2017-06-18 - Assignees: Yissum Research Development Company of the Hebrew University of Jerusalem; Hadasit Medical Research Services and Development Ltd. - Applicants: Yissum Research Development Company of the Hebrew University of Jerusalem Ltd.; Hadasit Medical Research Services and Development Ltd. - Inventors: Ran Eliaz; Yonathan Avraham Demma; Ziv Menshes; Or Hazan; Eva Abramov; Yaakov Nahmias; Amnon Buxboim; Yoav Kan-Tor; Yoav Mintz; Elchanan Fried - Web page: https://patentgrep.com/patent/US11298151B2 ## CPC - A61B 17/3417: {Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating (syringe needles A61M5/32; dilators A61M29/00)} - A61B 17/00234: {for minimally invasive surgery (A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence)} - A61B 17/3468: {for implanting or removing devices, e.g. prostheses, implants, seeds, wires (devices for implanting seeds A61M37/0069)} - A61B 17/3476: {Powered trocars, e.g. electrosurgical cutting, lasers, powered knives} - A61B 2017/00026: {Conductivity or impedance, e.g. of tissue} - A61B 2017/00247: {Making holes in the wall of the heart, e.g. laser Myocardial revascularization} - A61B 2017/3458: {threaded} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract Device for accessing a pericardial space of a subject in need thereof, the device including a tubular member having an atraumatic distal end and a thread formed on, and at least partially around, the outer surface of the tubular member, proximally to the distal end; wherein the thread is configured to cut, puncture and/or penetrate a pericardium. ## Claims ### Claim 1 A device for accessing a pericardial space of a subject in need thereof, the device comprising: a tubular member having an open ended atraumatic distal end, a proximal end, and a wall having an outer surface and an inner surface forming a lumen, wherein the tubular member and the atraumatic distal end are not movable with respect to each other; a thread formed on, and at least partially around, said outer surface, proximal to said atraumatic distal end, wherein said thread ends at a sharp distal tip spaced at a constant distance of between 2 and 10 mm, inclusive, from the atraumatic distal end, a first bio-impedance sensor positioned on the atraumatic distal end; and a second bio-impedance sensor positioned on a distal end of the thread; wherein said thread is configured to cut, puncture and/or penetrate a pericardium, when in use, at an essentially perpendicular and/or tangential angle relative to said longitudinal axis of said tubular member, and wherein the atraumatic distal end is configured to protect said subject's heart and/or myocardium from being damaged. ### Claim 2 (depends on 1) The device according to claim 1, wherein the proximal end of said tubular member comprises an attachment mechanism configured to reversibly attach said tubular member to a handle. ### Claim 3 (depends on 2) The device according to claim 2, wherein the proximal end of said tubular member comprises a securing element configured to ensure proper connection of said tubular member to said handle. ### Claim 4 (depends on 1) The device according to claim 1, wherein said tubular member is open ended, thereby enabling passing a medical instrument and/or medicament through said lumen into said pericardial space, when said device has penetrated into said pericardial space. ### Claim 5 (depends on 1) The device according to claim 1, wherein said tubular member comprises a penetrable end-cap covering the lumen opening; wherein said penetrable end-cap is penetrable from within said lumen, such that a medical instrument and/or medicament passed through said lumen can enter said pericardial space. ### Claim 6 (depends on 1) A method for accessing a pericardial space of a subject in need thereof, the method comprising: inserting the device of claim 1 into a chest cavity; advancing the device to the pericardium until said atraumatic distal end reaches and/or presses against said pericardium; and rotating said tubular member along its longitudinal axis, such that said thread cuts, punctures and/or penetrates said pericardium, thereby allowing said tubular member's distal end to enter said pericardial space. ### Claim 7 (depends on 6) The method according to claim 6, further comprising moving said tubular member along its longitudinal and/or axial axis concurrently with the rotating thereof, thereby screwing said thread through and/or into said pericardium. ### Claim 8 (depends on 7) The method according to claim 7, further comprising rotating said tubular member without advancement, thereby lifting and/or separating layers of the pericardium. ### Claim 9 (depends on 8) The method according to claim 8, further comprising generating a workspace by rotating said tubular member without advancement, thereby lifting and/or separating layers of the pericardium. ### Claim 10 (depends on 9) The method according to claim 9, wherein the device further comprises one or more sensors configured to detect penetration of said device into said pericardial space and wherein the method further comprising obtaining a signal from the one or more sensors. ### Claim 11 (depends on 10) The method according to claim 10, wherein, when a signal indicative of penetration into said pericardial space is obtained, said rotation and/or longitudinal movement of said tubular member is halted. ### Claim 12 (depends on 11) The method according to claim 11, further comprising inserting a medical instrument through said tubular member's lumen into said pericardial space. ### Claim 13 (depends on 12) The method according to claim 12, further comprising delivering a medicament through said tubular member's lumen to said pericardial space.