Stratasys, Inc.

St. Jude Medical Atg, Inc.

Torax Medical, Inc.

3m Innovative Properties Company

Syntach Ag

Schneider (usa) Inc.

St. Jude Medical Cardiovascular Group, Inc.

Stratsys, Inc.

Statasys, Inc.

Sinus Rhythm Technologies, Inc.

William J Swanson

J Samuel Batchelder

Kevin C Johnson

Dominic F Mannella

Todd Allen Berg

Ronald G Schloesser

S Scott Crump

Joseph Edward LaBossiere

Timothy A Hjelsand

Jerome Kent Grudem, Jr

Patrick W Turley

Chad John Kugler

Paul Hindrichs

Paul E Hopkins

Jason A Galdonik

Steve Brose

Richard G Cornelius

James W Comb

Robert L Skubic

Jerry Grudem

William R Priedeman, Jr

Michael D Bosveld

Paul J Leavitt

Mark D Wahlberg

David M Kozlak

Daniel I Kimm

Andrew Mason Hahn

David L Pollard

Minea A Popa

Daniel J Sullivan

Benjamin N Dunn

Jerome W Goetzke

Scott Patrick Thome

Samuel J Batchelder

Scott S Crump

Brett Ryan Johnson

Martin G Zalusky

James A Burns

James E Orrock

Gregory Alan Boldenow

Thomas J McDonough

Mihnea A Popa

Randall R Shay

Bryan L Smith

Rick Cornelius

Richard Thomas Anderson

Saurav Upadhyaya

Luis Bonilla

Peter J Karwoski

Michael W Hansen

Claudia Mosher

Alfredo Santiago, Jr

Robert S Schwartz

Alex Alden Peterson

William A Mittelstadt

John Samuel Batchelder

Michael P Brenzel

Luke M B Rodgers

Nathan Knutson

Chad E Beery

Steven Scott Crump

Gary A Baribeau

Gary Larson

Jeffrey L Crotty

Steven M Brose

J Samuel Batchedler

Jacob David Lynch August

Richard T Anderson

Joseph E Labossiere

A filament for use in an extrusion-based additive manufacturing system includes an elastomeric core and a harder, non-elastomeric shell. The core compositionally comprising an elastomeric core material having a flexural modulus of less than 31,000 psi and a durometer of less than 80 Shore. The shell overlays the core portion and compositionally comprises a non-elastomeric thermoplastic shell material that is substantially miscible with the elastomeric core material, wherein the core material and the shell material have the same monomer chemistry. The non-elastomeric thermoplastic shell material has a flexural modulus that is greater than the flexural modulus of the elastomeric core material by at least a factor of five, wherein the shell provides sufficient strength or stiffness to the filament such that filament can be utilized as a feedstock in the extrusion-based additive manufacturing system.

Core-shell filament for use in extrusion-based additive manufacturing systems and method of printing parts

A consumable assembly for supplying filament to a 3D printer having two or more receptacles having different geometric configurations, the 3D printer builds parts by material extrusion. The consumable assembly includes a container configured to retain a supply of a first filament, and a first filament guide tube having a length, the first filament guide tube having an inlet end attached to the first container and an outlet end, The consumable assembly includes a key having a geometric configuration allowing the key to be plugged into only one receptacle of the two or more receptacles of the 3D printer, the key comprising a conduit having an entrance and an exit, a coupling portion, and an engagement portion, wherein the entrance to the conduit is coupled to the outlet end of the first filament guide tube to thereby form a closed filament path from the first container to the 3D printer.

Filament supply with sealed connector for use with a 3D printer

A plurality of structures that resiliently attract one another are provided for implanting in a patient around a body tissue structure of the patient. For example, the body tissue structure may be the esophagus, and the plurality of structures may be implanted in an annulus around the outside of the esophagus, the annulus being substantially coaxial with the esophagus. The attraction may be between annularly adjacent ones of the structures in the annulus, and it may be provided, for example, by magnets or springs. The array of structures is preferably self-limiting with respect to the smallest area that it can encompass, and this smallest area is preferably large enough to prevent the apparatus from applying excessive pressure to tissue passing through that area.

Methods and apparatus for treating body tissue sphincters and the like

A print assemblyfor use in an additive manufacturing systemto print three-dimensional parts, which includes a coarse positioner, a fine positioner, and a liquefier assembly, where a portion of the liquefier assemblyis operably mounted to the fine positionersuch that the fine positioneris configured to move the portion of the liquefier assemblyrelative to the coarse positioner

Print assembly for additive manufacturing system, and methods of use thereof

A print assembly for use in an additive manufacturing system to print three-dimensional parts, which includes a coarse positioner, a fine positioner, and a liquefier assembly, where a portion of the liquefier assembly is operably mounted to the fine positioner such that the fine positioner is configured to move the portion of the liquefier assembly relative to the coarse positioner.

A nozzle for printing three-dimensional parts with an additive manufacturing system, the nozzle comprising a nozzle body having an inlet end and a tip end offset longitudinally from the inlet end, a tip pipe for extruding a flowable material, an inner ring extending circumferentially around the tip pipe at the outlet end, an outer ring extending circumferentially around the inner ring, at least one annular recessed groove located circumferentially between the inner ring and the outer ring.

Print head nozzle for use with additive manufacturing system

A liquefier assembly for use in an additive manufacturing system to print three-dimensional parts. In one aspect, the liquefier assembly includes a liquefier that is transversely compressible, and having an inlet end configured to receive a consumable material in a solid or molten state and an outlet end, a nozzle at the outlet end, and an actuator mechanism configured to transversely compress and expand the liquefier in a controlled manner In another aspect, the liquefier assembly is self heating.

Liquefier assemblies for additive manufacturing systems, and methods of use thereof

An additive manufacturing system for printing three-dimensional (3D) parts includes a print foundation, a print head, a drive mechanism, and a supporting surface that creates an air bearing for parts under construction as they move through the system. The print head is configured to print a 3D part onto the print foundation in a layer-by-layer manner in a vertical print plane. The drive mechanism is configured to index the print foundation substantially along a horizontal print axis during printing of the 3D part. The support surface is provided by a table extending along the horizontal axis. The table has a plurality of air jets forming an air platen, which generates the air bearing for supporting the 3D part as it is incremented along the print axis.

Additive manufacturing system with extended printing volume, and methods of use thereof

A 3D printer is configured to print a 3D part. The 3D printer includes a print head carried by a head gantry and configured to operably move the print head along planar tool paths. The 3D printer includes at least one head gantry actuator coupled to the head gantry and configured to move the print head in a plane and a print head actuator coupled to the print head and configured to move the print head in a direction substantially orthogonal to the plane. A sensor is fixedly mounted to the print head and configured to output a first signal that is directly or indirectly related to an acceleration of the print head, and a gyroscope is fixedly mounted to the print head and configured to output a second signal related to a rotational position of the print head. The 3D printer includes a controller configured to determine a rotational position error of the print head relative to a predetermined position based on the first signal and the second signal and to output one or more signals to the at least one head gantry actuator and/or the print head actuator to compensate for the rotational position error of the print head.

Rotational position error compensation of print heads in a 3D printer and methods thereof

A consumable material for use in an extrusion-based digital manufacturing system, the consumable material comprising a length and a cross-sectional profile of at least a portion of the length that is axially asymmetric. The cross-sectional profile is configured to provide a response time with a non-cylindrical liquefier of the extrusion-based digital manufacturing system that is faster than a response time achievable with a cylindrical filament in a cylindrical liquefier for a same thermally limited, maximum volumetric flow rate.

Ribbon filament and assembly for use in extrusion-based digital manufacturing systems

An additive manufacturing system includes a build chamber with at least first and second side walls and top and bottom walls. A central deformable, thermal insulator has a first edge and a second edge, where a print head carriage is movably retained within the central deformable thermal insulator and is configured to move print heads within a build plane of the build chamber under control of a gantry. The system includes first and second dynamic thermal barriers each having a length between a proximal edge and a distal edge wherein the proximal edge is configured to be secured to the central deformable insulator and a distal edge is configured to be movably retained to the build chamber such that as the print head carriage moves laterally across the build plane, each dynamic thermal barrier moves with the central deformable insulator and print head carriage, and retains its length.

Additive manufacturing system with sliding thermal isolator

A method includes receiving an indication that a 3D printer has encountered an error printing an instance of a 3D print job and selecting an idle 3D printer to print the instance of the 3D print job. Previous printing instructions for the instance of the 3D print job are changed based on the selected idle 3D printer and the changed printing instructions are provided to the selected idle 3D printer.

Method and system for automated print failure detection and re-submission

A method for printing a three-dimensional part with an additive manufacturing system, the method comprising generating and printing a planarizing part having a substantially-planar top surface relative to a build plane, and a bottom surface that substantially mirrors a topography of a platen surface, and printing the three-dimensional part over the substantially-planar top surface of the printed planarizing part.

Platen planarizing process for additive manufacturing system

Growing community of inventors

Saint Paul, MN, United States of America

William J Swanson