# US 2024/0188976 A1 · Devices and methods for restricting flow in vessels and removing material from vessels > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2024/0188976 A1 - Document ID: US20240188976A1 - Status: Published application - Kind: A1 - Application number: 18/533,678 - Filed: 2023-12-08 - Published: 2024-06-13 - Earliest claimed: 2022-12-08 - Assignees: Penumbra, Inc. - Applicants: Penumbra, Inc. - Inventors: Jorge Gamba; Eric Sauvageau; Michael Schaller - Web page: https://patentgrep.com/patent/US20240188976A1 ## CPC - A61B 17/221: Gripping devices in the form of loops or baskets {for gripping calculi or similar types of obstructions (surgical snare instruments A61B17/32056)} - A61M 25/0074: {Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable} - A61M 25/0082: {Catheter tip comprising a tool} - A61B 2017/22079: {with suction of debris} - A61B 2017/2215: {having an open distal end} - 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 device for removing material from a patient includes a catheter having a distal catheter end and defining a catheter lumen and a containing element coupled to the catheter. The containing element is deployable from the distal catheter end of the catheter and includes an outer wall portion. The outer wall portion includes an inner layer defining an inner chamber and an outer layer coupled to the inner layer. The inner layer and the outer layer form a distal folded edge defining a distal opening of the containing element in communication with the inner chamber. Implementations of the device may further include a control element extending through the catheter lumen and coupled to the containing element for selectively collapsing the inner chamber, a membrane for restricting flow through the outer wall portion, and/or a flow restriction formed by the containing element. ## Claims ### Claim 1 A device comprising: a catheter having a distal catheter end and defining a catheter lumen; a containing element coupled to the catheter, wherein the containing element is configured to be deployed from the distal catheter end of the catheter and includes an outer wall portion including: an inner layer defining an inner chamber in communication with the catheter lumen; and an outer layer coupled to the inner layer such that, when the containing element is deployed from the catheter, the inner layer and the outer layer form a distal folded edge defining a distal opening of the containing element in communication with the inner chamber; and a control element extending through the catheter lumen and coupled to the containing element, wherein the control element is longitudinally movable relative to the catheter to selectively collapse the inner chamber defined by the inner layer when the containing element is deployed. ### Claim 2 (depends on 1) The device of claim 1, wherein the containing element is formed from a braided shape settable material. ### Claim 3 (depends on 1) The device of claim 1, wherein the containing element is coupled to the catheter by the outer layer. ### Claim 4 (depends on 1) The device of claim 1, wherein the outer wall portion further includes a membrane configured to prevent fluid flow through at least a portion of the outer wall portion. ### Claim 5 (depends on 4) The device of claim 4, wherein the membrane is disposed between the inner layer and the outer layer. ### Claim 6 (depends on 4) The device of claim 4, wherein the membrane is coupled to one the outer layer and the inner layer. ### Claim 7 (depends on 1) The device of claim 1, wherein the distal folded edge is configured to retain a predefined shape when deployed from the distal catheter end. ### Claim 8 (depends on 7) The device of claim 7, wherein the distal folded edge is formed by heat setting the containing element in a deployed shape. ### Claim 9 (depends on 1) The device of claim 1, wherein the control element is a control catheter coupled to a proximal portion of the inner layer. ### Claim 10 (depends on 1) The device of claim 1, wherein the control element is a filament extending between the inner layer and the outer layer of the outer wall portion. ### Claim 11 (depends on 1) The device of claim 1, wherein, when the containing element is deployed, the outer layer includes a proximal flow restriction portion. ### Claim 12 (depends on 11) The device of claim 11, wherein the proximal flow restriction portion is a proximally concave surface of the outer layer. ### Claim 13 (depends on 1) The device of claim 1, wherein the outer layer proximally tapers. ### Claim 14 (depends on 1) The device of claim 1, further comprising a delivery catheter within which the catheter is disposed. ### Claim 15 A device comprising: a catheter having a distal catheter end and defining a catheter lumen; and a containing element coupled to the catheter, wherein the containing element is configured to be deployed from the distal catheter end of the catheter and includes an outer wall portion including: an inner layer defining an inner chamber in communication with the catheter lumen; and an outer layer coupled to the inner layer such that, when the containing element is deployed from the catheter, the inner layer and the outer layer form a distal folded edge defining a distal opening of the containing element in communication with the inner chamber; wherein the outer layer is configured to form a proximally concave surface when the containing element is deployed from the distal catheter end. ### Claim 16 (depends on 15) The device of claim 15, wherein the containing element is formed from a braided shape settable material. ### Claim 17 (depends on 15) The device of claim 15, wherein the proximally concave surface includes a proximal folded edge and each of the distal folded edge and the proximal folded edge are configured to retain a predefined shape when deployed from the distal catheter end. ### Claim 18 (depends on 17) The device of claim 17, wherein the distal folded edge and the proximal folded edge are formed by heat setting the containing element in a deployed shape. ### Claim 19 A system comprising: an aspiration source; a delivery catheter; a catheter disposed within the delivery catheter, wherein the catheter includes a distal catheter end and defines a catheter lumen in fluid communication with the aspiration source; a containing element coupled to the catheter, wherein the containing element is configured to be deployed from the distal catheter end of the catheter and includes an outer wall portion including: an inner layer defining an inner chamber of the containing element in communication with the catheter lumen; an outer layer coupled to the inner layer such that, when the containing element is deployed from the catheter, the inner layer and the outer layer form a distal folded edge defining a distal opening of the containing element in communication with the inner chamber; and a membrane configured to restrict flow through the outer wall portion; and a control element extending through the catheter lumen and coupled to the containing element, wherein the control element is longitudinally movable relative to the catheter to selectively collapse the inner chamber defined by the inner layer when the containing element is deployed. ### Claim 20 (depends on 19) The system of claim 19, wherein the outer layer is configured to form a proximally concave surface when the containing element is deployed from the distal catheter end.