Patents by Inventor Roland Alexander Van De Molengraaf
Roland Alexander Van De Molengraaf 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).
-
Publication number: 20230240873Abstract: The present disclosure relates generally to an outer sheath and the use of the outer sheath with a drug coated balloon for the treatment of vascular conditions. In particular, the present disclosure provides an outer sheath that is capable of covering the expandable member during delivery and removal of the drug coated balloon.Type: ApplicationFiled: December 21, 2020Publication date: August 3, 2023Inventors: Mitchell ERICKSON, Arjen VAN DER HORST, Roland Alexander VAN DE MOLENGRAAF
-
Patent number: 11538980Abstract: An actuator device has an electroactive polymer actuator (35) and an integrated piezoelectric transformer (30) whose primary side (32) and secondary side (34) are formed from different electroactive polymer materials. At least the secondary side (34) of the transformer shares a piezoelectric electroactive polymer layer (36) with the electroactive polymer actuator, so that lower external voltages can be applied to the device.Type: GrantFiled: June 7, 2017Date of Patent: December 27, 2022Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Achim Hilgers, Daan Anton Van Den Ende, Mark Thomas Johnson, Roland Alexander Van De Molengraaf
-
Patent number: 11433394Abstract: A flow control device comprises a laminate structure of an electroactive material layer and a non-actuatable layer. An array of orifices is formed in one of the layers wherein the orifices are open in one of the rest state and actuated state and the orifices are closed in the other of the rest state and actuated state. Actuation of the electroactive material layer causes orifices to open and close so that flow control function may be implemented.Type: GrantFiled: December 11, 2017Date of Patent: September 6, 2022Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Eduard Gerard Marie Pelssers, Herbert Lifka, Roland Alexander Van De Molengraaf, Daan Anton Van Den Ende, Franciscus Johannes Gerardus Hakkens, Mark Thomas Johnson, Cornelis Petrus Hendriks, Anja Van De Stolpe
-
Patent number: 11362258Abstract: An electroactive polymer actuator includes an electroactive polymer structure and a driver for providing an actuation drive signal. In one aspect, a first drive level is used to charge the electroactive polymer structure from a non-actuated state to an actuated state. When or after the electroactive polymer structure reaches the actuated state, a lower second drive level is used to hold the electroactive polymer structure at the actuated state. This temporary overdrive scheme improves the speed response without damaging the electroactive polymer structure. In another aspect, a driving method makes use of several different level segments over time, which compensates for the delayed actuation response of the EAP actuator.Type: GrantFiled: June 22, 2017Date of Patent: June 14, 2022Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Daan Anton Van Den Ende, Mark Thomas Johnson, Roland Alexander Van De Molengraaf, Achim Hilgers
-
Publication number: 20220133235Abstract: The present invention relates to a sensor comprising a housing; at least a sensor element arranged within the housing; plurality of elongate structures providing one or more slots; a front end and a back end provided by the housing; wherein the one or more slots are arranged between the front end and the back end of the housing; and wherein the one or more fingers are configured to receive the sensor element extending within the one or more slots. Furthermore, a device comprising the sensor and a method for manufacturing the sensor is provided.Type: ApplicationFiled: January 19, 2020Publication date: May 5, 2022Inventors: Johannes Wilhelmus WEEKAMP, Roland Alexander VAN DE MOLENGRAAF, Arjen VAN DER HORST
-
Patent number: 11322677Abstract: The invention involves providing a reset signal before and or after one or more actuation signals to an electroactive polymer structure of an actuator. The reset signal can cause relaxation of defects such as e.g. trapped charge, dipoles and/or others in the EAP or EAP structure so that upon a subsequent activation using a drive signal, the initial actuation state is defined to be more constant than without use of the reset signal. Hence the actuation 5 output of a device employing the invention is more reproducible. The invention is applicable to actuator devices that have an electroactive polymer structure including an EAP material, where the structure is capable of providing a mechanical actuation upon subjection of at least part of the EAP material to an electrical drive signal.Type: GrantFiled: May 15, 2017Date of Patent: May 3, 2022Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Roland Alexander Van De Molengraaf, Mark Thomas Johnson, Cornelis Petrus Hendriks, Daan Anton Van Den Ende
-
Publication number: 20220131065Abstract: The present invention relates to a sensor, comprising a sensor element and an interconnect. The interconnect is configured to be arranged at the sensor element. The interconnect comprises at least a carrier film provided with metallic layer. The interconnect is configured to provide an electrical connection for the sensor element. Furthermore a device comprising the sensor and a method of manufacturing the sensor is provided.Type: ApplicationFiled: January 21, 2020Publication date: April 28, 2022Inventors: Johannes Wilhelmus WEEKAMP, Roland Alexander VAN DE MOLENGRAAF, Arjen VAN DER HORST
-
Patent number: 11246567Abstract: An intravascular Doppler ultrasonic device comprises a tip region forming a fraction of a catheter body at a distal end thereof and carrying an ultrasound probe. The tip region is bendable in a direction perpendicular to a longitudinal direction. An actuator is provided in the tip region, which is configured to receive actuation drive power provided through the catheter body and to exert to the tip region a bending moment of a controllable amount. An actuation controller is configured to control actuation drive power delivery to the actuator so as to control the amount of the bending moment. A Doppler spectrum analysis unit is configured to receive Doppler spectrum data and to determine from it a Doppler signal quality measure indicative of a signal quality of the Doppler spectrum. The actuation controller is configured to determine the actuation drive power in dependence on the determined Doppler signal quality measure.Type: GrantFiled: December 14, 2017Date of Patent: February 15, 2022Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Cornelis Petrus Hendriks, Arjen Van Der Horst, Roland Alexander Van De Molengraaf, Mark Thomas Johnson, Franciscus Johannes Gerardus Hakkens, Daan Anton Van Den Ende, Howard Alpert
-
Patent number: 11211544Abstract: An actuator or sensor device comprises an electroactive polymer (EAP) arrangement which extends between fixed opposite ends. The electroactive polymer arrangement comprises a passive carrier layer and an active electroactive polymer layer, wherein at or adjacent the ends, the passive carrier layer and the active EAP layer are mounted with one over the other in a first order, and at a middle area between the ends, the carrier layer and the active EAP layer are mounted in an opposite order. This enables internal stresses and moments within the electroactive polymer arrangement to be used more effectively to contribute to displacement or actuation force.Type: GrantFiled: August 19, 2016Date of Patent: December 28, 2021Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Rene Leonardus Jacobus Marie Ubachs, Valentina Lavezzo, Cornelis Petrus Hendriks, Eduard Gerard Marie Pelssers, Daan Anton Van Den Ende, Mark Thomas Johnson, Roland Alexander Van De Molengraaf, Peter Coops
-
Patent number: 11195985Abstract: An actuator device has an electroactive polymer actuator and an integrated piezoelectric transformer. At least a secondary side of the integrated piezoelectric transformer shares a piezoelectric electroactive polymer layer with the electroactive polymer actuator, so that lower external voltages can be applied to the actuator device. A diode is connected between the secondary side of the integrated piezoelectric transformer and the electroactive polymer actuator.Type: GrantFiled: June 12, 2017Date of Patent: December 7, 2021Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Achim Hilgers, Daan Anton Van Den Ende, Mark Thomas Johnson, Roland Alexander Van De Molengraaf
-
Publication number: 20210106280Abstract: A sensor arrangement is for mounting along an elongate device. The sensor arrangement is for positioning along a line sensor arrangements and has terminal blocks at a proximal and distal side, each for connection to one or more wires. A connection circuit controls the coupling of sensor signals to the proximal wires and the coupling of the distal wires to the proximal wires. In this way, a bypass function is implemented through the connection circuit, which avoids the need for physical wires of a distal sensor arrangement to bypass the sensor arrangement itself.Type: ApplicationFiled: February 18, 2019Publication date: April 15, 2021Inventors: Johannes Wilhelmus WEEKAMP, Antonia Cornelia VAN RENS, Roland Alexander VAN DE MOLENGRAAF, Arjen VAN DER HORST
-
Patent number: 10928283Abstract: The invention provides a surface analysis device for application to a receiving surface to enable analysis of at least one measure of an elasticity of said surface across multiple different linear stretches or sections of the surface. The device includes a two-dimensional arrangement of actuators and sensors, comprising at least one actuating element, at least one sensing element, and at least one further sensing or actuating element. Selected sets of two or more of these elements are activated together by a controller, each set including at least one actuator and one sensor, to thereby obtain a measure of elasticity between each actuator and sensor pair in the set. Elasticity measures are obtained based on stimulating a deformation in the receiving surface at the actuator site, and measuring a resultant pressure and/or force exerted by the receiving surface at a further displaced point. Sensors may monitor a change in the exerted pressure and/or force for example.Type: GrantFiled: August 28, 2017Date of Patent: February 23, 2021Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Eduard Gerard Marie Pelssers, Cornelis Petrus Hendriks, Achim Hilgers, Mark Thomas Johnson, Daan Anton Van Den Ende, Roland Alexander Van De Molengraaf
-
Patent number: 10903762Abstract: An actuator device comprises an electroactive or photoactive polymer arrangement having an effective length over which expansion or contraction is induced by actuation. The effective length is greater than the maximum linear physical dimension of the space occupied by the polymer arrangement. In this way, a compact design is provided which can support a large actuation displacement.Type: GrantFiled: September 2, 2016Date of Patent: January 26, 2021Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Cornelis Petrus Hendriks, Mark Thomas Johnson, Daan Anton Van Den Ende, Eduard Gerard Marie Pelssers, Roland Alexander Van De Molengraaf
-
Publication number: 20210007711Abstract: A medical device (10) for insertion into a patient is disclosed. The medical device (10) comprising an elongate body (12), the medical device terminating in a distal portion and further comprising a carrier (20) carrying an annular sensor arrangement (50), wherein the annular sensor arrangement is attached on a forward facing surface of the elongate body (12). Also disclosed is a system (100) including such a medical device (10).Type: ApplicationFiled: March 11, 2019Publication date: January 14, 2021Inventors: Arjen VAN DER HORST, Roland Alexander VAN DE MOLENGRAAF, Vincent Adrianus HENNEKEN, Johannes Wilhelmus WEEKAMP, Maarten Petrus Joseph KUENEN, Sergei Y. SHULEPOV, Bruno Jean François FRACKOWIAK
-
Publication number: 20200321517Abstract: An actuator device has an electroactive polymer actuator (35) and an integrated piezoelectric transformer (30) whose primary side (32) and secondary side (34) are formed from different electroactive polymer materials. At least the secondary side (34) of the transformer shares a piezoelectric electroactive polymer layer (36) with the electroactive polymer actuator, so that lower external voltages can be applied to the device.Type: ApplicationFiled: June 7, 2017Publication date: October 8, 2020Inventors: ACHIM HILGERS, DAAN ANTON VAN DEN ENDE, MARK THOMAS JOHNSON, ROLAND ALEXANDER VAN DE MOLENGRAAF
-
Patent number: 10797217Abstract: A bending actuator device or sensor device for sensing bending comprises a stack of electroactive polymer units. The adjacent electroactive polymer units in the stack are slidable relatively to each other. This means that, for an actuator for example, an increased actuation force is enabled without requiring increased driving voltage, and it also avoids the problems of stress build up by allowing sliding between the units.Type: GrantFiled: March 24, 2016Date of Patent: October 6, 2020Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Franciscus Johannes Gerardus Hakkens, Cornelis Petrus Hendriks, Daan Anton van Den Ende, Roland Alexander van De Molengraaf, Valentina Lavezzo
-
Patent number: 10772417Abstract: An oral cleaning device comprises a body which carries a set of projections. An actuator device is associated with one or more of the projections in the form of an electroactive polymer structure for adjusting a position of the associated one or more projections. This enables dynamic control of the cleaning function.Type: GrantFiled: March 22, 2016Date of Patent: September 15, 2020Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Valentina Lavezzo, Milica Kovacevic Milivojevic, Eduard Gerard Marie Pelssers, Daan Anton Van Den Ende, Franciscus Johannes Gerardus Hakkens, Cornelis Petrus Hendriks, Mark Thomas Johnson, Roland Alexander Van De Molengraaf
-
Patent number: 10765404Abstract: An internal probe device for insertion into the body of a patient, comprises an elongate body with a plurality of EAP actuators mounted at the surface of the body. The EAP actuators are made to vibrate so that their position becomes visible in a Doppler ultrasound image. The use of EAP actuators to provide vibrations enables individual locations to be identified. In particular, the movement of the EAP actuator may be largely isolated from the main body of the probe. Furthermore, EAP actuators can be thin, lightweight and have a small form factor suitable for application to or within the surface of a probe, such as a catheter, needle or endoscope.Type: GrantFiled: October 25, 2016Date of Patent: September 8, 2020Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Godefridus Antoniuss Harks, Franciscus Johannes Gerardus Hakkens, Roland Alexander Van De Molengraaf, Cornelis Petrus Hendriks, Alexander Franciscus Kolen, Franciscus Reinier Antonius Van Der Linde
-
Patent number: 10667888Abstract: A nozzle (12) for an oral irrigator device (10) having a guidance tip (34) with an orifice at one end, and a dynamic nozzle actuator (64) positioned within said guidance tip. The orifice (36) is configured to expel a fluid as one of a jet, a spray, or any combination thereof. The dynamic nozzle actuator (64) comprises at least one responsive material adapted for being energized and configured to implement at least one dynamic actuation of an effective channel (62) for dynamically influencing at least one of (i) a direction of fluid expelled from the orifice (36), (ii) an angle of fluid expelled from the orifice (36), (iii) a cross-sectional width of fluid expelled from the orifice (36), and (iv) any combination thereof.Type: GrantFiled: May 8, 2015Date of Patent: June 2, 2020Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Marinus Karel Johannes De Jager, Bart Gottenbos, Sandra Hoetzl, Cornelis Petrus Hendriks, Roland Alexander Van De Molengraaf, Mark Thomas Johnson, Marco Baragona, Milica Kovacevic Milivojevic, Valentina Lavezzo, Denny Mathew
-
Publication number: 20200168783Abstract: The proposed concept of driving an electroactive polymer actuator (70) makes use of a memory, comprising for example a look-up table (74), which stores data representing changes in actuation level over time for switching from a first actuation state to a second actuation state. A controller (76) controls a driver (72) to apply a drive waveform between two drive voltages, taking into account said stored data. In this way, non-ideal response (hysteresis, creep) of the actuator material is taken into account, so that the actuator may be operated as quickly and precise as possible. It is particularly suitable for ferroelectric relaxor polymers such as PVDF.Type: ApplicationFiled: May 23, 2018Publication date: May 28, 2020Inventors: ROLAND ALEXANDER VAN DE MOLENGRAAF, DAAN ANTON VAN DEN ENDE, MARK THOMAS JOHNSON