Mark D Barrish

US Patent:

20210100982, Apr 8, 2021

Filed:

Sep 9, 2020

Appl. No.:

17/015552

Inventors:

- Belmont CA, US
Mark D. Barrish - Belmont CA, US

Assignee:

Project Moray, Inc. - Belmont CA

International Classification:

A61M 25/01
A61B 34/20
A61F 2/24
A61B 17/122
A61B 17/128
A61M 25/00

Abstract:

Articulation devices, systems, methods for articulation, and methods for fabricating articulation structures will often include simple balloon arrays, with inflation of the balloons interacting with elongate skeletal support structures so as to locally alter articulation of the skeleton. The skeleton may comprise a simple helical coil or interlocking helical channels, and the array can be used to locally deflect or elongate an axis of the coil under control of a processor. Liquid inflation fluid may be directed so as to pressurize the balloons from an inflation fluid canister, and may vaporize within a plenum or the channels or balloons of the articulation system, with the inflation system preferably including valves controlled by the processor. The articulation structures can be employed in minimally invasive medical catheter systems, and also for industrial robotics, for supporting imaging systems, for entertainment and consumer products, and the like.

US Patent:

20200179652, Jun 11, 2020

Filed:

Feb 13, 2020

Appl. No.:

16/790568

Inventors:

- Belmont CA, US
Keith Phillip Laby - Oakland CA, US
Mark D. Barrish - Belmont CA, US
Tim Williams - Palo Alto CA, US

Assignee:

Project Moray, Inc. - Belmont CA

International Classification:

A61M 25/01
A61M 25/00

Abstract:

Devices, systems, and methods for articulating elongate flexible structures such as catheters optionally include an array of fluid-expandable bodies such as balloons. The array can be formed using separate strings of balloons formed along single-lumen balloon tube material. The balloon strings can be twisted together to form a multi-channel bundle, or the balloon strings may be circumferentially separated, each extending axially. Regardless, the balloons along a common lumen may be aligned so as to bend the catheter in a desired lateral direction. The fluid-expandable bodies may include an elastomeric bladder with a fiber braid so that inflation of the bladder shortens the assembly and applies axial tension to articulate the catheter. The elongate flexible structures may be pre-biased so as to form a bend when in a relaxed configuration, with the structures being articulatable from the bend.

US Patent:

20200069917, Mar 5, 2020

Filed:

Nov 7, 2019

Appl. No.:

16/676921

Inventors:

- Belmont CA, US
Mark D. Barrish - Belmont CA, US

Assignee:

Project Moray, Inc. - Belmont CA

International Classification:

A61M 25/01
A61M 25/10
A61F 2/24

Abstract:

Catheter-supported therapeutic and diagnostic tools can be introduced into a patient body with a sheath slidably disposed over the tool. Once the tool is aligned with a target tissue, a first fluid-driven actuator can move the sheath axially from over the tool, for example, to allow a stent, stent-graft, prosthetic valve, or other self-expanding tool, to expand radially within the cardiovascular system, without having to transmit large deployment forces along the catheter shaft and sheath from outside the patient. A second fluid-driven actuator can be arranged in opposition to the first actuator to control release of the expanding tool or to recapture the tool within the sheath. The first and/or second actuators may comprise a balloon having a diameter larger than the sheath to provide the desired deployment and recapture forces with moderate fluid pressure.

US Patent:

20180311473, Nov 1, 2018

Filed:

Apr 25, 2018

Appl. No.:

15/963004

Inventors:

- Belmont CA, US
Miles D. Alexander - Fremont CA, US
Mark D. Barrish - Belmont CA, US

International Classification:

A61M 25/01
A61M 25/10
A61B 18/14
A61F 2/24

Abstract:

Medical devices, systems, and methods for catheter-based structural heart therapies, including positioning of prosthetic mitral valves, make use of catheter structures that can flex when advanced over a pre-bent guidewire. Telescoping transseptal access systems use steering segments that are disposed proximal of a relatively rigid catheter segment (the segment optionally supporting a prosthetic valve) by engaging tissue adjacent the right atrium near the proximal end of the valve, and by telescoping a relatively rigid needle guide distally from the valve across the right atrium to engage tissue of the fossa ovalis. Hybrid pull-wire/balloon articulation systems may optionally employ relatively stiff pull-wire articulation within the right atrium, and relatively flexible balloon articulation systems within the left atrium. More generally, hybrid systems may have catheter systems with pullwires or movable sheath, along with fluid drive and robotic control components.

US Patent:

20180200483, Jul 19, 2018

Filed:

Feb 17, 2017

Appl. No.:

15/435671

Inventors:

- Belmont CA, US
Henry Bourang - Turlock CA, US
Mark D. Barrish - Belmont CA, US

International Classification:

A61M 25/01
A61M 25/00

Abstract:

Articulation devices, systems, and methods for articulating elongate flexible structures can locally contract a flexible elongate frame or skeleton of an elongate flexible body such as a catheter. Balloons along one side of an axial segment of the elongate flexible body can be inflated so as to help define a resting shape of the elongate body. The skeleton may have pairs of corresponding axially oriented surface regions coupled to each other by a loop of a deformable helical coil structure. Balloons may be between the regions, and the pairs may be separated by an offset that increases when the axis of the skeleton is axially compressed. Inflation of the balloons can axially contract or shorten the skeleton adjacent the balloons so that the elongate body bends toward the balloons. Different sets of balloons may apply opposing local axial elongation and contraction forces so that selective inflation and deflation of subsets of the balloons can controllably bend and/or change an overall axial length of the elongate body throughout a workspace. Varying the inflation pressures of the opposed balloons can controllably and locally modulate the stiffness of the elongate body.

US Patent:

20180085559, Mar 29, 2018

Filed:

Sep 28, 2017

Appl. No.:

15/719191

Inventors:

- Belmont CA, US
Mark D. Barrish - Belmont CA, US

International Classification:

A61M 25/01
A61M 25/00
A61B 34/20
A61F 2/24
A61B 17/122
A61B 17/128

Abstract:

Articulation devices, systems, methods for articulation, and methods for fabricating articulation structures will often include simple balloon arrays, with inflation of the balloons interacting with elongate skeletal support structures so as to locally alter articulation of the skeleton. The skeleton may comprise a simple helical coil or interlocking helical channels, and the array can be used to locally deflect or elongate an axis of the coil under control of a processor. Liquid inflation fluid may be directed so as to pressurize the balloons from an inflation fluid canister, and may vaporize within a plenum or the channels or balloons of the articulation system, with the inflation system preferably including valves controlled by the processor. The articulation structures can be employed in minimally invasive medical catheter systems, and also for industrial robotics, for supporting imaging systems, for entertainment and consumer products, and the like.

US Patent:

20180071492, Mar 15, 2018

Filed:

Mar 24, 2017

Appl. No.:

15/469085

Inventors:

Phillip Laby - Oakland CA, US
Mark D. Barrish - Belmont CA, US

International Classification:

A61M 25/01

Abstract:

Catheter-supported therapeutic and diagnostic tools can be introduced into a patient body with a sheath slidably disposed over the tool. Once the tool is aligned with a target tissue, a fluid-driven actuator can move the sheath axially from over the tool, for example, to allow a stent, stent-graft, prosthetic valve, or the like to expand radially within the cardiovascular system, without having to transmit large deployment forces along the catheter shaft and sheath from outside the patient. Well-behaved articulation structures will often include simple balloon arrays, with inflation of the balloons interacting with elongate skeletal support structures so as to improve articulation behavior of the skeleton. The array can be used to improve uniformity of bending along a segment of a flexible body such as a catheter. The articulation improvement structures can be employed in minimally invasive medical catheter systems, and also for industrial continuum robotics, for supporting imaging systems, for entertainment and consumer products, and the like.

US Patent:

20170157361, Jun 8, 2017

Filed:

Dec 5, 2016

Appl. No.:

15/369606

Inventors:

Mark D. Barrish - Belmont CA, US
Phillip Laby - Oakland CA, US

International Classification:

A61M 25/01
A61B 34/20

Abstract:

User interface devices, systems, and methods can be used for selectively bending of, altering the bend characteristics of, and/or altering the lengths of catheter bodies, guidewires, steerable trocars, and other flexible structures inserted into a patient during use. Optionally, a housing is coupled to a proximal end of a catheter, and movement of the housing by a hand of a system user is sensed and used as a movement command for articulation of the catheter. Alternatively, a sensor can be coupled to an elongate flexible body flexing outside of the patient so as to alter bending of a catheter within the patient. Movements generated through a combination of manual manipulation and powered articulations are facilitated.