公开(公告)号：US20210205625A1

公开(公告)日：2021-07-08

申请号：US17212370

申请日：2021-03-25

Applicant: UNIVERSITY OF KANSAS

Inventor： Elizabeth Annamaria FRIIS ,  John Patrick Domann ,  Paul M. Arnold

IPC: A61N1/378 ,  H01L41/37 ,  H01L41/083 ,  H01L41/18 ,  H02N2/18 ,  H01L41/113 ,  H01L41/04 ,  A61F2/44 ,  A61N1/20 ,  H01L41/047 ,  H01L41/053 ,  H01L41/23 ,  H01L41/277

Abstract: The present application relates to stacked piezoelectric composites comprising piezoelectric structures. Suitably, the composites are useful as tissue-stimulating implants, including spinal fusion implants. The present application also relates to methods of making stacked piezoelectric composites.

公开(公告)号：US20180296843A1

公开(公告)日：2018-10-18

申请号：US15766535

申请日：2016-10-05

Applicant: University of Kansas

Inventor： Elizabeth Annamaria FRIIS ,  John Patrick DOMANN ,  Paul M. ARNOLD

IPC: A61N1/378 ,  H01L41/04 ,  H01L41/047 ,  H01L41/053 ,  H01L41/083 ,  H01L41/18 ,  H01L41/23 ,  H01L41/277 ,  H01L41/37 ,  A61N1/20 ,  A61F2/44

Abstract: The present application relates to stacked piezoelectric composites comprising piezoelectric structures. Suitably, the composites are useful as tissue-stimulating implants, including spinal fusion implants. The present application also relates to methods of making stacked piezoelectric composites.

公开(公告)号：US20250160215A1

公开(公告)日：2025-05-15

申请号：US18888338

申请日：2024-09-18

Applicant: UNIVERSITY OF KANSAS ,  EVOKE MEDICAL, LLC

Inventor： Elizabeth Annamaria FRIIS ,  Ember KRECH ,  Eileen CADEL ,  Bonnie REINSCH ,  Leighton LAPIERRE

IPC: H10N30/50 ,  A61N1/05 ,  H10N30/30 ,  H10N30/853 ,  H10N30/857

Abstract: The present application relates to stacked piezoelectric energy harvesters that include compliant layers between piezoelectric layers. The energy harvesters are useful in various structures and devices, including tissue-stimulating implants, such as spinal fusion implants. The present application also relates to methods of increasing the power output of a piezoelectric energy harvester through the inclusion of compliant layers.

公开(公告)号：US20240108383A1

公开(公告)日：2024-04-04

申请号：US18265383

申请日：2021-12-10

Applicant: University of Kansas

Inventor： Elizabeth Annamaria FRIIS ,  Ember KRECH ,  Zachary PESSIA ,  Craig CUNNINGHAM

IPC: A61B17/72 ,  A61B17/56

CPC classification number: A61B17/72 ,  A61B17/56 ,  A61B2017/00402

Abstract: Examples of modular intermedullary nails are described. In one case, a modular intermedullary nail includes a proximal end component, a distal end component and a modular component. The modular component includes a piezoelectric segment to generate an electric charge based on mechanical stress applied to the modular intermedullary nail. A proximal connector connects the modular component to the proximal end component, and a distal connector connects the modular component to the distal end component. The intermedullary nail further includes at least one electrode to electrically couple the electric charge to facilitate bone regrowth.

公开(公告)号：US20220125590A1

公开(公告)日：2022-04-28

申请号：US17336946

申请日：2021-06-02

Applicant: University of Kansas

Inventor： Elizabeth Annamaria FRIIS ,  John Patrick DOMANN

IPC: A61F2/30 ,  B29C48/00 ,  A61F2/44 ,  A61L27/44 ,  H01L41/257 ,  A61L27/50 ,  H01L41/37 ,  H01L41/18 ,  B29C43/00 ,  B29C45/00 ,  B29C49/00 ,  B29C51/00 ,  B29C71/00

Abstract: There is a need for methods that can produce piezoelectric composites having suitable physical characteristics and also optimized electrical stimulatory proper-ties. The present application provides piezo-electric composites, including tissue-stimu-lating composites, as well as methods of making such composites, that meet these needs. In embodiments, methods of making a spinal implant are provided. The methods suitably comprise preparing a thermoset, thermoplastic or thermoset/thermoplastic, or copolymer polymerizable matrix, dispersing a plurality of piezoelectric particles in the polymerizable matrix to generate dispersion, shaping the dispersion, inducing an electric polarization in the piezoelectric particles in the shaped dispersion, wherein at least 40% of the piezoelectric particles form chains.

公开(公告)号：US20210367134A1

公开(公告)日：2021-11-25

申请号：US17045262

申请日：2019-04-02

Applicant: UNIVERSITY OF KANSAS ,  EVOKE MEDICAL, LLC

Inventor： Elizabeth Annamaria FRIIS ,  Ember KRECH ,  Eileen CADEL ,  Bonnie REINSCH ,  Leighton LAPIERRE

IPC: H01L41/083 ,  H01L41/187 ,  H01L41/113 ,  H01L41/193

Abstract: The present application relates to stacked piezoelectric energy harvesters that include compliant layers between piezoelectric layers. The energy harvesters are useful in various structures and devices, including tissue-stimulating implants, such as spinal fusion implants. The present application also relates to methods of increasing the power output of a piezoelectric energy harvester through the inclusion of compliant layers.