Patents by Inventor Steven Loisel
Steven Loisel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240138859Abstract: A dynamic aspiration method including engaging a distal end of an aspiration catheter against an occlusion in a blood vessel, applying a vacuum through an aspiration lumen of the aspiration catheter using a vacuum source coupled to a proximal end of the aspiration lumen by a connecting tube, whereby portions of the occlusion are drawn into the aspiration lumen, through the connecting tube and into a collection receptacle by the vacuum source, sensing flow through the connecting tube, and automatically generating pressure differentials when a clog or restricted flow is detected.Type: ApplicationFiled: January 5, 2024Publication date: May 2, 2024Inventors: Scott Teigen, Steven Loisel, Stephen Pons, Ben Tompkins
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Patent number: 11944328Abstract: A vacuum aspiration control system for use with a vacuum source and an aspiration catheter includes a connecting tube configured to connect the vacuum source with a lumen of an aspiration catheter. An on-off valve is operatively coupled to the connecting tube, and a sensing unit is configured to detect flow within the connecting tube and provide a signal representative of flow. A controller receives the signal to decide whether to open or close the valve. The controller may automatically close the valve to stop flow when flow through the connecting tube is unrestricted, or according to a predetermined timing sequence. The controller can further periodically open a closed valve to determine whether flow has entered an acceptable range. The controller can still further engage pulsed aspiration with a pressure manipulation assembly when flow is restricted or occluded.Type: GrantFiled: September 2, 2020Date of Patent: April 2, 2024Assignee: Penumbra, Inc.Inventors: Scott Teigen, Steven Loisel, Stephen Pons, Ben Tompkins
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Publication number: 20240000469Abstract: A vacuum aspiration control system for use with a vacuum source and an aspiration catheter includes a connection tubing configured to act as a fluid conduit between the vacuum source and the aspiration catheter. A controllable valve is configured to control a level of vacuum in the connection tubing provided by the vacuum source, and one or more pressure sensors are associated with the connection tubing. A controller is configured to periodically sample flow when the current flow state is unrestricted, utilize an artificial neural network to classify a flow state for the sampled flow, close the controllable valve if the flow state for the sampled flow is classified as unrestricted, and hold the controllable valve open if the flow state for the sampled flow is classified as restricted or obstructed.Type: ApplicationFiled: September 18, 2023Publication date: January 4, 2024Inventors: Scott Teigen, Steven Loisel, Stephen Pons, Ben Tompkins
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Patent number: 11759219Abstract: A vacuum aspiration control system for use with a vacuum source and an aspiration catheter includes a connecting tube configured to connect the vacuum source with a lumen of an aspiration catheter. An on-off valve is operatively coupled to the connecting tube, and a sensing unit is configured to detect flow within the connecting tube and provide a signal representative of flow. A controller receives the signal to decide whether to open or close the valve. The controller may automatically close the valve to stop flow when flow through the connecting tube is unrestricted, or according to a predetermined timing sequence. The controller can further periodically open a closed valve to determine whether flow has entered an acceptable range. The controller can still further engage pulsed aspiration with a pressure manipulation assembly when flow is restricted or occluded.Type: GrantFiled: July 23, 2019Date of Patent: September 19, 2023Assignee: Penumbra, Inc.Inventors: Scott Teigen, Steven Loisel, Stephen Pons, Ben Tompkins
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Publication number: 20230026412Abstract: An aspiration thrombectomy system including an aspiration catheter having a proximal portion, a distal end and a lumen extending through the catheter, a vacuum source fluidically coupled to the catheter, a vacuum valve connected between the vacuum source and the proximal portion of the catheter to control a vacuum flow in the catheter lumen, a vent valve fluidically coupled to the proximal portion of the catheter, the vent valve being configured to control a flow of a vent fluid in the catheter lumen, and a controller configured to open and close the vacuum valve and the vent valve in a predetermined cycle to change a level of vacuum at the distal end of the catheter and to control fluid flow in and out from the distal end of the catheter.Type: ApplicationFiled: September 29, 2022Publication date: January 26, 2023Inventors: Scott Teigen, Steven Loisel, Stephen Pons, Ben Tompkins
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Publication number: 20220280171Abstract: A blood clot removal system including an aspiration catheter, an external unit having a first pressure sensor, a base unit having a second pressure sensor, a vacuum source connected to the base unit, connection tubing connecting the external unit to the aspiration catheter and the base unit, controllable sensory indicators, and a controller to receive a first pressure from the first pressure sensor and a second pressure from the second pressure sensor, determine a pressure differential based on the first pressure and the second pressure, determine a current catheter state from a plurality of catheter states based on the pressure differential, and transmit, via the one or more sensory indicators, one or more sensory indications of the current catheter state.Type: ApplicationFiled: March 4, 2022Publication date: September 8, 2022Inventors: Scott Teigen, Steven Loisel, Stephen Pons, Ben Tompkins
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Patent number: 11389186Abstract: A system for intracranial access that includes a support assembly is described. The system includes a tubular probe shaft that may be advanced through a hole in the patient's skull. The tubular probe shaft houses a rotating element that cuts clot, and is connected to a vacuum source to aspirate clot fragments and blood from the site. The rotating element may have a bident shape.Type: GrantFiled: June 30, 2020Date of Patent: July 19, 2022Assignee: Penumbra, Inc.Inventor: Steven Loisel
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Patent number: 11337712Abstract: An aspiration thrombectomy system, comprising an aspiration catheter having a proximal end and a distal end, wherein the proximal end of the aspiration catheter comprises a lumen configured to accommodate fluid, a vacuum source comprising a controllable vacuum valve, and a controller configured to detect a change in a connection between the aspiration catheter and the aspiration thrombectomy system, wherein the controller is further configured to change a pulsation protocol associated with the aspiration catheter responsive to the change in the connection between the aspiration catheter and the aspiration thrombectomy system, wherein the pulsation protocol specifies pressure variations and pressure patterns to modulate the vacuum valve to change a level of vacuum at the distal end of the aspiration catheter.Type: GrantFiled: July 28, 2021Date of Patent: May 24, 2022Assignee: Penumbra, Inc.Inventors: Scott Teigen, Steven Loisel, Stephen Pons, Ben Tompkins
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Patent number: 11197683Abstract: An aspiration thrombectomy system, comprising a vacuum source comprising a controllable vacuum valve, a pressure source comprising a controllable pressure valve, an aspiration catheter having a proximal end and a distal end, wherein the proximal end of the aspiration catheter comprises connection tubing having a lumen configured to accommodate fluid, and wherein the connection tubing acts as a common conduit for fluid communication between the aspiration catheter and the vacuum and pressure sources via the vacuum and pressure valves, respectively, and a controller configured to open and close the vacuum and vent valves in a predetermined cycle to change a level of vacuum at the distal end of the aspiration catheter and control flow in and out from the distal end of the catheter.Type: GrantFiled: August 2, 2021Date of Patent: December 14, 2021Assignee: Penumbra Inc.Inventors: Scott Teigen, Steven Loisel, Stephen Pons, Ben Tompkins
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Publication number: 20210361314Abstract: An aspiration thrombectomy system, comprising a vacuum source comprising a controllable vacuum valve, a pressure source comprising a controllable pressure valve, an aspiration catheter having a proximal end and a distal end, wherein the proximal end of the aspiration catheter comprises connection tubing having a lumen configured to accommodate fluid, and wherein the connection tubing acts as a common conduit for fluid communication between the aspiration catheter and the vacuum and pressure sources via the vacuum and pressure valves, respectively, and a controller configured to open and close the vacuum and vent valves in a predetermined cycle to change a level of vacuum at the distal end of the aspiration catheter and control flow in and out from the distal end of the catheter.Type: ApplicationFiled: August 2, 2021Publication date: November 25, 2021Inventors: Scott Teigen, Steven Loisel, Stephen Pons, Ben Tompkins
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Publication number: 20210353323Abstract: An aspiration thrombectomy system, comprising an aspiration catheter having a proximal end and a distal end, wherein the proximal end of the aspiration catheter comprises a lumen configured to accommodate fluid, a vacuum source comprising a controllable vacuum valve, and a controller configured to detect a change in a connection between the aspiration catheter and the aspiration thrombectomy system, wherein the controller is further configured to change a pulsation protocol associated with the aspiration catheter responsive to the change in the connection between the aspiration catheter and the aspiration thrombectomy system, wherein the pulsation protocol specifies pressure variations and pressure patterns to modulate the vacuum valve to change a level of vacuum at the distal end of the aspiration catheter.Type: ApplicationFiled: July 28, 2021Publication date: November 18, 2021Inventors: Scott Teigen, Steven Loisel, Stephen Pons, Ben Tompkins
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Patent number: 11096712Abstract: A vacuum aspiration control system for use with a vacuum source and an aspiration catheter includes a connecting tube configured to connect the vacuum source with a lumen of an aspiration catheter. An on-off valve is operatively coupled to the connecting tube, and a sensing unit is configured to detect flow within the connecting tube and provide a signal representative of flow. A controller receives the signal to decide whether to open or close the valve. The controller may automatically close the valve to stop flow when flow through the connecting tube is unrestricted, or according to a predetermined timing sequence. The controller can further periodically open a closed valve to determine whether flow has entered an acceptable range. The controller can still further engage pulsed aspiration with a pressure manipulation assembly when flow is restricted or occluded.Type: GrantFiled: August 7, 2020Date of Patent: August 24, 2021Assignee: Penumbra, Inc.Inventors: Scott Teigen, Steven Loisel, Stephen Pons, Ben Tompkins
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Publication number: 20210128182Abstract: A vacuum aspiration control system for use with a vacuum source and an aspiration catheter includes a connecting tube configured to connect the vacuum source with a lumen of an aspiration catheter. An on-off valve is operatively coupled to the connecting tube, and a sensing unit is configured to detect flow within the connecting tube and provide a signal representative of flow. A controller receives the signal to decide whether to open or close the valve. The controller may automatically close the valve to stop flow when flow through the connecting tube is unrestricted, or according to a predetermined timing sequence. The controller can further periodically open a closed valve to determine whether flow has entered an acceptable range. The controller can still further engage pulsed aspiration with a pressure manipulation assembly when flow is restricted or occluded.Type: ApplicationFiled: July 23, 2019Publication date: May 6, 2021Inventors: Scott Teigen, Steven Loisel, Stephen Pons, Ben Tompkins
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Publication number: 20200397957Abstract: A vacuum aspiration control system for use with a vacuum source and an aspiration catheter includes a connecting tube configured to connect the vacuum source with a lumen of an aspiration catheter. An on-off valve is operatively coupled to the connecting tube, and a sensing unit is configured to detect flow within the connecting tube and provide a signal representative of flow. A controller receives the signal to decide whether to open or close the valve. The controller may automatically close the valve to stop flow when flow through the connecting tube is unrestricted, or according to a predetermined timing sequence. The controller can further periodically open a closed valve to determine whether flow has entered an acceptable range. The controller can still further engage pulsed aspiration with a pressure manipulation assembly when flow is restricted or occluded.Type: ApplicationFiled: September 2, 2020Publication date: December 24, 2020Inventors: Scott Teigen, Steven Loisel, Stephen Pons, Ben Tompkins
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Publication number: 20200367917Abstract: A vacuum aspiration control system for use with a vacuum source and an aspiration catheter includes a connecting tube configured to connect the vacuum source with a lumen of an aspiration catheter. An on-off valve is operatively coupled to the connecting tube, and a sensing unit is configured to detect flow within the connecting tube and provide a signal representative of flow. A controller receives the signal to decide whether to open or close the valve. The controller may automatically close the valve to stop flow when flow through the connecting tube is unrestricted, or according to a predetermined timing sequence. The controller can further periodically open a closed valve to determine whether flow has entered an acceptable range. The controller can still further engage pulsed aspiration with a pressure manipulation assembly when flow is restricted or occluded.Type: ApplicationFiled: August 7, 2020Publication date: November 26, 2020Inventors: Scott Teigen, Steven Loisel, Stephen Pons, Ben Tompkins
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Publication number: 20200330117Abstract: A system for intracranial access that includes a support assembly is described. The system includes a tubular probe shaft that may be advanced through a hole in the patient's skull. The tubular probe shaft houses a rotating element that cuts clot, and is connected to a vacuum source to aspirate clot fragments and blood from the site. The rotating element may have a bident shape.Type: ApplicationFiled: June 30, 2020Publication date: October 22, 2020Applicant: Penumbra, Inc.Inventor: Steven Loisel
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Patent number: 10716590Abstract: A system for intracranial access that includes a support assembly is described. The system includes a tubular probe shaft that may be advanced through a hole in the patient's skull. The tubular probe shaft houses a rotating element that cuts clot, and is connected to a vacuum source to aspirate clot fragments and blood from the site. The rotating element may have a bident shape.Type: GrantFiled: March 20, 2018Date of Patent: July 21, 2020Assignee: Penumbra, Inc.Inventor: Steven Loisel
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Publication number: 20200214786Abstract: A system for intracranial access that includes a support assembly is described. The support assembly has a hub and lobes surrounding a central aperture for introducing a sheathed core that can accommodate an endoscope and/or other devices. Some embodiments include a collar and a ring, each of which can be tightened to secure the sheathed core in place. An accessory device for use during intracranial aspiration procedures is described.Type: ApplicationFiled: March 18, 2020Publication date: July 9, 2020Applicant: Penumbra, Inc.Inventor: Steven Loisel
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Patent number: 10631946Abstract: A system for intracranial access that includes a support assembly is described. The support assembly has a hub and lobes surrounding a central aperture for introducing a sheathed core that can accommodate an endoscope and/or other devices. Some embodiments include a collar and a ring, each of which can be tightened to secure the sheathed core in place. An accessory device for use during intracranial aspiration procedures is described.Type: GrantFiled: November 23, 2016Date of Patent: April 28, 2020Assignee: Penumbra, Inc.Inventor: Steven Loisel
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Publication number: 20180263646Abstract: A system for intracranial access that includes a support assembly is described. The system includes a tubular probe shaft that may be advanced through a hole in the patient's skull. The tubular probe shaft houses a rotating element that cuts clot, and is connected to a vacuum source to aspirate clot fragments and blood from the site. The rotating element may have a bident shape.Type: ApplicationFiled: March 20, 2018Publication date: September 20, 2018Applicant: Penumbra, Inc.Inventor: Steven Loisel