公开(公告)号：US20190024045A1

公开(公告)日：2019-01-24

申请号：US16070368

申请日：2017-01-22

Applicant: The Board of Trustees of the Leland Stanford Junio University ,  Worcester Polytechnic Institute

Inventor： Utkan Demirci ,  Erkan Tüzel ,  James Leonard Kingsley ,  Thiruppathiraja Chinnasamy

IPC: C12N5/071 ,  B01L3/00

Abstract: A microfluidic chip is provided for self-sorting highly motile, morphologically normal sperm cell with high DNA integrity from a fresh semen sample. The sperm self-sorting microfluidic chip has one or more inlet chambers, and sperm collection outlet chamber(s), and the middle of the channel features various micro-fabricated structures in different geometrical shapes and orientations, with varying periodicities and patterns, such as an array of micro-fabricated pillars that facilitate the transport of the active and healthy sperm into the outlet chamber.

公开(公告)号：US10119758B2

公开(公告)日：2018-11-06

申请号：US14726803

申请日：2015-06-01

Applicant: Worcester Polytechnic Institute

Inventor： Jamal Yagoobi ,  Yasmin Khakpour

IPC: F26B3/32 ,  F26B3/18 ,  F26B13/26

Abstract: Drying a planar substrate such as paper sheet goods for packing materials includes layering a phase change material (PCM) on a substrate, in which the substrate has a moisture content and adapted for moisture removal to form a planar medium. A drying process disposes the substrate adjacent to a plurality of rollers and heat the layered substrate to a predetermined temperature based on a specific heat of the PCM. The rollers advance the layered substrate in series through pocket ventilation regions between the heat transfer elements, such that the pocket ventilation regions permit drying of the substrate enhanced by the specific heat of the temperature sensitive material. Upon drying, the layered substrate forms the planar medium suitable for use as a packing medium or other suitable application. The pocket ventilation regions are based on the PCM to facilitate drying and eradication of moisture from the paper planar substrate.

公开(公告)号：US20180284100A1

公开(公告)日：2018-10-04

申请号：US15783414

申请日：2017-10-13

Applicant: WORCESTER POLYTECHNIC INSTITUTE

Inventor： Emmanuel AGU ,  Christina AIELLO

IPC: G01N33/497 ,  G01N33/98 ,  A61B5/00

Abstract: In a mobile sensing device, a method of detecting blood alcohol content includes receiving time-series gait data from at least one sensor of the mobile sensing device as a user walks and detecting a set of attributes associated with the time-series gait data, each attribute of the set of attributes related to the user's gait. The method includes comparing the set of attributes with a machine learning classification model learned from a training data set of attributes to determine at least one of a blood alcohol content range of the user and an impairment level of the user and outputting a notification associated with the at least one of the blood alcohol content range of the user and the impairment level of the user.

公开(公告)号：US20180256070A1

公开(公告)日：2018-09-13

申请号：US15916628

申请日：2018-03-09

Applicant: Worcester Polytechnic Institute

Inventor： Lucy Garvey ,  Lubna Hassan ,  Kyla Nichols ,  Allison Paquin ,  Robert J. Daniello ,  Marsha Rolle

IPC: A61B5/087 ,  A61B5/085 ,  A61B5/091

CPC classification number: A61B5/0878 ,  A61B5/0809 ,  A61B5/085 ,  A61B5/091 ,  A61B5/1135 ,  A61B2503/40 ,  A61B2562/0271 ,  A61B2562/029

Abstract: An equine respiratory detection device provides an inexpensive, portable appliance for evaluating equine health. A muzzle or mouthpiece attaches to the equine mouth region for sealably engaging with the respiratory pathway. The mouthpiece attached to a tubular vessel having a volumetric sensing apparatus for measuring respiratory inflow and outflow rates. The sensing apparatus includes a hot wire anemometer and sensing circuit for sensing flow rates based on changing electrical characteristics of a sensing element resulting from a temperature and humidity of the respiratory gases. Inhaling results in inflow gases having a cooling effect on a thermistor which affects the current flow in the sensor circuit. Similarly, exhaled outflow gases have increased temperature and humidity which allow identification of bidirectional flow and computation of an overall respiration volume to the equine patient subject.

公开(公告)号：US10061012B2

公开(公告)日：2018-08-28

申请号：US14701977

申请日：2015-05-01

Applicant: Worcester Polytechnic Institute

Inventor： Antti E. Koski ,  David Cyganski ,  R. James Duckworth

IPC: G01S5/06 ,  G01S5/02 ,  G01S5/22 ,  G01S1/02

CPC classification number: G01S5/0278 ,  G01S1/02 ,  G01S5/0252 ,  G01S5/06 ,  G01S5/22

Abstract: A ranging and tracking system and method employs a Coherent Array Reconciliation Tomography (CART) approach that benefits from a series of samples gathered from deployed receivers in an area of interest, and applies a sequence of matrix operations and transformations to data defining locations in a Cartesian grid space for summing constructive characteristics in a received waveform for identifying a leading edge indicative of a time of arrival (TOA) from a signal source, and computing a metric based on the distance to the signal source. Sampled waveform information (data) from multiple locations in the area of interest allows computation of a likelihood metric for each location in the grid space of containing the signal source. Rendering of the grid space location having the highest likelihood metric illustrates a position of the signal source, and may be graphically depicted clustering of the locations depicting a high likelihood.

公开(公告)号：US20180064851A1

公开(公告)日：2018-03-08

申请号：US15698429

申请日：2017-09-07

Applicant: Case Western Reserve University ,  Worcester Polytechnic Institute

Inventor： Eben Alsberg ,  Anna D. Dikina ,  Marsha W. Rolle ,  Hannah A. Strobel

IPC: A61L27/38 ,  A61K35/42 ,  A61L27/58 ,  A61K35/32

CPC classification number: A61L27/3817 ,  A61K35/28 ,  A61K35/32 ,  A61K35/42 ,  A61K35/44 ,  A61L27/3804 ,  A61L27/3839 ,  A61L27/3886 ,  A61L27/54 ,  A61L27/58 ,  A61L2300/414 ,  A61L2300/62 ,  A61L2400/12 ,  A61L2430/02 ,  C12M21/08 ,  C12M25/14 ,  C12N5/0655 ,  C12N5/0697 ,  C12N2533/30

Abstract: A modular engineered tissue construct includes a plurality of fused self-assembled, scaffold-free, high-density cell aggregates. At least one cell aggregate includes a plurality of cells and a plurality of biocompatible and biodegradable nanoparticles and/or microparticles that are incorporated within the cell aggregates. The nanoparticles and/or microparticles acting as a bulking agent within the cell aggregate to increase the cell aggregate size and/or thickness and improve the mechanical properties of the cell aggregate as well as to deliver bioactive agents.

公开(公告)号：US09846042B2

公开(公告)日：2017-12-19

申请号：US14940704

申请日：2015-11-13

Applicant: Worcester Polytechnic Institute

Inventor： Benzun Wisely Babu ,  David Cyganski ,  R. James Duckworth

IPC: G01C21/20 ,  G01C21/18 ,  G05D1/02 ,  G06T7/80 ,  G06T7/246

CPC classification number: G01C21/206 ,  G01C21/18 ,  G05D1/0251 ,  G05D1/027 ,  G05D1/0274 ,  G06T7/246 ,  G06T7/85 ,  G06T2207/10012 ,  G06T2207/30244

Abstract: An indoor localization system uses Visual Simultaneous Localization and Mapping (VSLAM) aided by gyroscope sensor information. Indoor environments pose several challenges which could cause a vision only system to fail due to tracking errors. Investigation revealed significant feature loss in a vision only system when traversing plain walls, windows and staircases. However, the addition of a gyroscope helps in handling such difficult conditions by providing additional rotational information. A portable system consisting of an Inertial Measurement Unit (IMU) and a stereo camera has been developed for indoor mapping. The images and gyroscope rates acquired by the system are stored and post-processed using Gyroscope Assisted Scalable Visual Simultaneous Localization and Mapping Algorithm.

公开(公告)号：US20170322629A1

公开(公告)日：2017-11-09

申请号：US15586684

申请日：2017-05-04

Applicant: Worcester Polytechnic Institute

Inventor： Saraj Pirasmepulkul ,  Alexander Caracappa ,  Peerapat Luxsuwong ,  Cagdas D. Onal ,  William Michalson ,  Tri Khuu ,  Ming Luo

IPC: G06F3/01 ,  G06F3/0484

CPC classification number: G06F3/016 ,  G06F3/011 ,  G06F3/014 ,  G06F3/017 ,  G06F3/0346 ,  G06F3/0484 ,  G06F2203/0383 ,  G10H2220/311 ,  G10H2220/321

Abstract: A toroidal actuator is responsive to a teleoperator for providing haptic feedback responsive to a curvature or articulated movement applied to a gripped object. The toroidal actuator surrounds an operator member such as a finger, and is responsive to pneumatic pressure for increasing telepresence force defined by resistance encounter against a teleoperated robotic claw. As the teleoperated claw grips an object, increased pneumatic pressure in the toroidal actuator tends to elongate the toroidal shape in a linear manner and oppose a curvature force applied by an inserted operator finger. Resistive force is based on soft sensing of the gripped object, thus the toroidal actuator applies an increasing resistive force to curvature as the robotic claw closes around a gripped object by solenoid regulated air pressure. A typical assembly includes at least 3 toroidal actuators for two digits and a thumb of an operator.

公开(公告)号：US20170308104A1

公开(公告)日：2017-10-26

申请号：US15492161

申请日：2017-04-20

Applicant: Worcester Polytechnic Institute

Inventor： Richard T. Eberheim ,  Nicholas F. Hassan ,  Joshua C. O'Connor

IPC: G05D1/10 ,  B64C39/02 ,  B64C31/02 ,  B64D45/04 ,  B64B1/46

Abstract: The airborne vehicle recovery method and apparatus enables radiosonde users to reliably recover launched radiosondes and provides new and unique opportunities for research and data acquisition with balloon launched radiosondes. Airborne vehicles such as radiosondes are disposed in a flight body adapted for propulsionless, gliding navigation for returning to one of several designated landing sites for recovery. Onboard electronics including a navigation computer, flight computer, and lightweight battery are employed for selecting a landing site, computing a heading and direction, and actuating flaps for pursuing a propulsionless, gliding path to the landing site. Gliding is directed only by right and left flaps responsive to respective actuators, such that the inclusion of only the actuators, navigation and flight electronics, and without active propulsion, enables sufficient gliding range from the lightweight construction and arrangement to reach one of several landing sites for effecting substantial recovery rates of the radiosondes.

公开(公告)号：US20170296159A1

公开(公告)日：2017-10-19

申请号：US15491107

申请日：2017-04-19

Applicant: Worcester Polytechnic Institute ,  University of Massachusetts

Inventor： Jacquelyne DiTroia ,  Caroline Mazzola ,  Andres Monterroso ,  Patricia Swierk ,  Kristen Billiar ,  Arriyan Samandar Dowlatshahi ,  Raymond M. Dunn

IPC: A61B17/02 ,  A61B17/32 ,  A61B17/00

CPC classification number: A61B17/0206 ,  A61B2017/00407 ,  A61B2017/00902 ,  A61B2017/00911 ,  A61B2017/0092 ,  A61B2017/320044

Abstract: A surgical appliance includes a pair of opposed prongs slideably disposed on an elongated locking track for retracting neurovascular and musculotendinous anatomical structures through an incision for affording access to deeper structures for inserting osteosynthesis hardware in the surgical treatment of a distal radius fracture or other surgical procedure. The prongs extend from retractors that traverse the locking track for opposed linear movement while recessed in a surgical working region accessible through an incision. The prongs terminate in curvatures defining a void that gather and engage the elongated anatomical structures on top of the skeletal members receiving the plate. The prongs draw back the tendons, blood vessels and nerve structures to allow unimpeded surgical access for manipulating and attaching skeletal and soft tissue members and/or appliances. The device retracts anatomical structures along a linear track for a fixed locking engagement maintaining a surgical gap without direct manual assistance.