# US 11,298,507 B2 · System and methods for leadless pacing using negative pressure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,298,507 B2 - Document ID: US11298507B2 - Status: Granted - Kind: B2 - Application number: 16/520,225 - Filed: 2019-07-23 - Published: 2019-11-14 - Granted: 2022-04-12 - Earliest claimed: 2017-04-26 - Assignees: Pacesetter, Inc. - Applicants: Pacesetter, Inc. - Inventors: Thomas B. Eby; Arundhati Kabe; Paul Paspa - Web page: https://patentgrep.com/patent/US11298507B2 ## CPC - A61M 25/0082: {Catheter tip comprising a tool} - A61N 1/372: Arrangements in connection with the implantation of stimulators - A61N 1/3756: {Casings with electrodes thereon, e.g. leadless stimulators} - A61B 2017/306: {holding by means of suction} - A61N 1/0573: {chacterised by means penetrating the heart tissue, e.g. helix needle or hook} - A61N 1/362: Heart stimulators (heart defibrillators A61N1/39) - 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)} - 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) ## Abstract Disclosed herein is a system for delivering a leadless pacemaker having a housing with a proximal end. The system includes a guide catheter. The guide catheter includes a catheter shaft and a negative pressure attachment feature. The catheter shaft includes a distal end and a proximal end opposite the distal end. The negative pressure attachment feature is located at the distal end of the catheter shaft and configured to selectively negative pressure adhere with the housing of the leadless pacemaker. ## Claims ### Claim 1 A system, comprising: a leadless pacemaker including a housing having a proximal end; and a guide catheter including an attachment feature of a catheter shaft, wherein the attachment feature is shaped to suction adhere to the housing of the leadless pacemaker via a negative pressure between the proximal end of the housing and an opposing surface of the attachment feature. ### Claim 2 (depends on 1) The system of claim 1 further comprising a source of the negative pressure in fluid communication with the attachment feature. ### Claim 3 (depends on 2) The system of claim 2, wherein the source of the negative pressure includes a vacuum pump or a vacuum chamber attached or attachable with the guide catheter. ### Claim 4 (depends on 2) The system of claim 2, wherein the source of the negative pressure includes a negative pressure inducing assembly on, or attachable with, the guide catheter. ### Claim 5 (depends on 4) The system of claim 4, wherein the negative pressure inducing assembly includes a chamber and a member displaceable within the chamber to change a volume of the chamber, wherein displacing the member to increase the volume of the chamber results in the negative pressure being communicated to the attachment feature. ### Claim 6 (depends on 5) The system of claim 5, wherein the negative pressure inducing assembly includes a syringe. ### Claim 7 (depends on 1) The system of claim 1, wherein the attachment feature is configured to be mechanically, hydraulically, or pneumatically deflected such that deflection of the attachment feature modifies an attachment feature volume, and a decrease in the attachment feature volume causes the attachment feature to adhere to the housing of the leadless pacemaker. ### Claim 8 (depends on 1) The system of claim 1, wherein the attachment feature includes a cupular chamber including the opposing surface having a surface contour that is substantially a surface negative of the proximal end of the housing of the leadless pacemaker. ### Claim 9 (depends on 8) The system of claim 8, wherein the surface contour of the cupular chamber is at least one of semi-spherical, cylindrical, or conical. ### Claim 10 (depends on 1) The system of claim 1, wherein the attachment feature includes a cupular chamber having a shallow concave surface funneling to a suction lumen of the catheter shaft that daylights in the cupular chamber at a center of the cupular chamber. ### Claim 11 (depends on 10) The system of claim 10, wherein the shallow concave surface of the cupular chamber pancakes or flattens out to adhere via the negative pressure to the housing of the leadless pacemaker. ### Claim 12 (depends on 1) The system of claim 1, wherein the attachment feature and the leadless pacemaker have similar, but opposite, concave surface contours, and when the attachment feature adheres to the housing, the opposing surface of the attachment feature goes from having a concave contour to a convex contour to extend along and substantially contact the concave surface contour of the housing. ### Claim 13 (depends on 1) The system of claim 1, wherein the attachment feature includes a concave flange. ### Claim 14 (depends on 1) The system of claim 1, wherein the attachment feature is formed of a polymeric material. ### Claim 15 (depends on 1) The system of claim 1, wherein the negative pressure between the attachment feature and the housing is sufficient to transfer an implantation torque from the catheter shaft to the leadless pacemaker. ### Claim 16 (depends on 15) The system of claim 15, wherein the leadless pacemaker includes a tissue anchor, wherein the negative pressure between the attachment feature and the housing is sufficient to transfer the implantation torque to screw the tissue anchor into tissue without displacement between the attachment feature and the housing.