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1. 发明授权

US12060261B2 Extremal microstructured surfaces 有权
公开(公告)号：US12060261B2
公开(公告)日：2024-08-13
申请号：US16676293
申请日：2019-11-06
申请人： BVW Holding AG
发明人： Lukas Bluecher , Michael Milbocker
IPC分类号： B81B1/00
CPC分类号： B81B1/002 , B81B2201/058 , B81B2203/0307 , B81B2203/0353 , B81B2203/0361
摘要： The present application relates to multifunctional hierarchically microstructured surfaces and three-dimensional anchored interfacial domain structures. The multifunctional properties are extremal. In one aspect the microstructured surfaces may be super-adhesive. Examples of super-adhesive mechanisms may include gas trapping, fluid trapping, and solid wrinkle trapping. In another aspect the micro structured surfaces may be nearly adhesive-less. Examples of adhesive-less mechanisms may include inter-solid surface lubrication, energy conserving fluid flows, and super-low drag phase-phase lateral displacement. The extremal structures may be obtained by anchoring mechanisms. Examples of anchoring mechanisms may include Wenzel-Cassie formation, contact angle confusion, and capillary effects.

2. 发明授权

US11942878B2 Microstructured field effect device 有权
公开(公告)号：US11942878B2
公开(公告)日：2024-03-26
申请号：US16837819
申请日：2020-04-01
申请人： BVW Holding AG
发明人： Lukas Bluecher , Michael Milbocker
IPC分类号： H02N13/00 , A61F2/02 , A61F2/00 , A61F2/48
CPC分类号： H02N13/00 , A61F2/02 , A61F2002/0086 , A61F2/482
摘要： A microstructured device is disclosed utilizing Coulomb field modification of surface energy and electroadhesion to localize a device surface or to levitate a device surface with respect to a target surface. The surface energy modification can be permanent or reversible depending on whether the charge is externally delivered to the device or derived on the device galvanically. The microstructure aspect of the device induces various hydrophilic/hydrophobic interactions with the target surface. The Coulomb field can be used to enhance or decrease the hydrophilic/hydrophobic interactions. In combination, the disclosed electro-microstructured device provides for localizing implants in a mammalian body, and additionally means for controlling cell interaction with the implant.

3. 发明申请

US20230112010A1 CAPILLARY BRIDGE ENHANCED FLUID GRIP DEVICE 有权
公开(公告)号：US20230112010A1
公开(公告)日：2023-04-13
申请号：US17953681
申请日：2022-09-27
申请人： BVW Holding AG
发明人： Michael Milbocker , Lukas Bluecher , Roelof Trip
IPC分类号： B81B3/00 , C09J9/00
摘要： A microstructured surface is disclosed capable of immobilizing or resisting displacement forces with respect to a target surface. The microstructured surface is capable of generating capillary bridges with a target surface. The capillary bridges can be further stabilized to generate a novel liquid enhanced adhesion mechanism.

4. 发明授权

US11559367B2 Wenzel-cassie glove 有权
公开(公告)号：US11559367B2
公开(公告)日：2023-01-24
申请号：US16557519
申请日：2019-08-30
申请人： BVW Holding AG
发明人： Lukas Bluecher , Michael Milbocker
IPC分类号： A41D19/015 , A61B42/10 , A61B42/00 , A41D31/12 , A41D19/00
摘要： A glove with an enhanced gripping textured surface is disclosed herein. In preferred embodiments, the glove contains a palm region adapted to cover the palm of a person's hand, a thumb region extending outwardly from the palm region, an index finger region disposed adjacent the thumb region, a middle finger region adjacent the index finger region, a ring finger region adjacent the middle finger region, and a little finger region adjacent the ring finger region with each region containing a textured surface. In preferred embodiments, the textured surface is formed by a plurality of dimensionally hierarchical structures superimposed in layers. The textured surface of the invention, when in contact with wet tissue, repels water at a first texture layer and traps tissue at a second texture layer, such that when in tissue contact, especially exudative tissue, tissue fixatively localizes to the glove surface.

5. 发明申请

US20230020566A1 Patterned Surfaces with Suction 有权
公开(公告)号：US20230020566A1
公开(公告)日：2023-01-19
申请号：US17842946
申请日：2022-06-17
申请人： BVW Holding AG
发明人： Lukas Bluecher , Michael Milbocker
IPC分类号： C09J7/38 , C09J7/20
摘要： A microstructured pressure-sensitive surface is described comprising a Wenzel-Cassie hydrophilic-hydrophobic zone structure and capillary action with improved peel strength. The capillary action is enhanced by the Wenzel-Cassie zone creation, and the barrier energy to disruption of the Wenzel-Cassie zone is increased by the capillary action. The micro-structured surfaces of the present invention create water zones of exclusion, where entropic effects reinforce Wenzel-Cassie zone stability, creating a suction effect that conforms the microstructure surface to a target surface.

6. 发明申请

US20210340412A1 EXPANSION MEDIATED ADHESIVE DEVICE 有权
公开(公告)号：US20210340412A1
公开(公告)日：2021-11-04
申请号：US17307121
申请日：2021-05-04
申请人： BVW Holding AG
发明人： Lukas Bluecher , Michael Milbocker
IPC分类号： C09J9/00 , B81B3/00
摘要： An adhesive device comprising a microstructure and polymer designed to interdigitate with the surface structure of a target surface. The device may include a microstructure material having an elastomeric, crosslinked polymer which may swell in the presence of a liquid. In the pre-swell state, the device microstructure may interdigitate with a target surface microstructure. When liquid on the target surface contacts the microstructure surface of the device, the liquid may cause the microstructure surface of the device to swell. The swelling may cause the microstructure to grasp the target surface resulting in adhesion between the device and the target surfaces.

7. 发明申请

US20210251318A1 Device for Dynamic Fluid Pinning 有权
公开(公告)号：US20210251318A1
公开(公告)日：2021-08-19
申请号：US17307525
申请日：2021-05-04
申请人： BVW Holding AG
发明人： Michael Milbocker , Lukas Bluecher
IPC分类号： A41D19/00 , B32B27/08 , B32B3/30 , B81C1/00
摘要： The present disclosure provides microstructured hydrophobic surfaces and devices for gripping wet deformable surfaces. The surfaces and devices disclosed herein utilize a split contact Wenzel-Cassie mechanism to develop multi-level Wenzel-Cassie structures. The Wenzel-Cassie structures are separated with a spatial period corresponding to at least one wrinkle eigenmode of a wet deformable surface to which the microstructure or device is designed to contact, allowing grip of the deformable surface without slippage. Microstructures of the present invention are specifically designed to prevent the formation of Shallamach waves when a shear force is applied to a deformable surface. The multi-level Wenzel-Cassie states of the present disclosure develop temporally, and accordingly are characterized by hierarchical fluid pinning, both in the instance of slippage, and more importantly in the instance of localization. This temporal aspect to the multi-level Wenzel-Cassie state delays or prevents the transition from a wrinkled eigenmode state in a deformable surface to a buckled state in a deformable surface.

8. 发明授权

US11051567B2 Device for dynamic fluid pinning 有权
公开(公告)号：US11051567B2
公开(公告)日：2021-07-06
申请号：US16146877
申请日：2018-09-28
申请人： BVW Holding AG
发明人： Michael Milbocker , Lukas Bluecher
IPC分类号： B32B3/30 , B32B27/08 , A41D19/00 , B81C1/00
摘要： The present disclosure provides microstructured hydrophobic surfaces and devices for gripping wet deformable surfaces. The surfaces and devices disclosed herein utilize a split contact Wenzel-Cassie mechanism to develop multi-level Wenzel-Cassie structures. The Wenzel-Cassie structures are separated with a spatial period corresponding to at least one wrinkle eigenmode of a wet deformable surface to which the microstructure or device is designed to contact, allowing grip of the deformable surface without slippage. Microstructures of the present invention are specifically designed to prevent the formation of Shallamach waves when a shear force is applied to a deformable surface. The multi-level Wenzel-Cassie states of the present disclosure develop temporally, and accordingly are characterized by hierarchical fluid pinning, both in the instance of slippage, and more importantly in the instance of localization. This temporal aspect to the multi-level Wenzel-Cassie state delays or prevents the transition from a wrinkled eigenmode state in a deformable surface to a buckled state in a deformable surface.

9. 发明授权

US10953138B2 Device with microstructure mediated absorption profile 有权
公开(公告)号：US10953138B2
公开(公告)日：2021-03-23
申请号：US16164444
申请日：2018-10-18
申请人： BVW Holding AG
发明人： Lukas Bluecher , Kenneth Kleinhenz , Michael Milbocker
IPC分类号： A61L27/58 , A61L27/18 , A61L31/06 , A61L27/34 , A61L31/10 , A61L27/22 , A61L31/14 , A61L27/30 , A61L31/04
摘要： Polymer devices are disclosed with microstructured surfaces that modify their absorption pathway. Polymers which generally degrade in water by fracturing into high surface energy fragments, are modified to degrade in vivo without the formation of sharp fragments. Devices are disclosed that possess improved handling characteristics and degrade in an aqueous environment in a uniform and continuous way that favors the formation of soluble monomers rather than solid particulate. Absorbable medical implants with the disclosed surface modifications are more biocompatible, with reduced foreign body response, and dissolution into metabolizable molecular species.

10. 发明授权

US10758380B2 Stents with improved fixation 有权
公开(公告)号：US10758380B2
公开(公告)日：2020-09-01
申请号：US15859440
申请日：2017-12-30
申请人： BVW Holding AG
发明人： Lukas Bluecher , Michael Milbocker , Roel Trip
IPC分类号： A61F2/88 , A61F2/07 , A61F2/90 , A61F2/04
摘要： The present disclosure provides stents, particularly self-expanding stents, useful for the GI tract, and more particularly, useful for treating esophageal strictures. The stents provided herein include a medial region and proximal and distal cuffs having external diameters greater than the medial region diameter when the stent is in the deployed state. The medial region comprises an open weave wire construction. An elastomeric coating circumscribes the medial region, while the may be an extension of the wire construction or separate elements. Preferably, the cuffs have a textured surface for contact with the esophageal wall tissue to resist stent migration. The elastomer coated medial region provides a barrier to tissue ingrowth, and has an enhanced radial restoring force to maintain an open passageway in a body lumen. Optionally, the stent includes an exterior sheath with a surface pattern, to which the stent couples. A low durometer sleeve, between the stent and body lumen, axial positioning of the stent relative to the body lumen. Consequently, precision in stent placement is provided without tissue damage that could result if positioning motion occurred between the surface texture and the body lumen.

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