Abstract: An ear-worn hearing device comprises a housing comprising an end portion configured for at least partial insertion into a user's ear, the housing comprises an opening at the end portion. A removable acoustic transducer assembly is disposed in the opening at the end portion. The transducer assembly is configured for removal from the end portion of the ear-worn hearing device housing. The transducer assembly comprises an acoustic transducer, a support structure mechanically coupled to the acoustic transducer, the open portion of the acoustic transducer acoustically coupled with an opening of the support structure; and a releasable retention structure configured to removably retain the transducer assembly in a cavity of the ear-worn hearing device housing. In some implementations a vibration isolation structure isolates the acoustic transceiver from vibration. In certain implementations, the transducer assembly includes an extraction feature that allows extraction from the end portion of the ear-worn device.

Abstract: A balanced armature receiver including a motor with a yoke for retaining magnets and fastening to an armature are disclosed. The yoke includes a close-ended wall structure defining a passage through which an armature is extendable. The close-ended wall structure includes a plurality of wall portions interconnecting a plurality of folded corner portions, wherein a thickness of the plurality of wall portions less than a thickness of the plurality of folded corner portions.

Abstract: Sound-producing acoustic receivers are disclosed. The acoustic receiver includes a receiver housing with a first internal volume and a second internal volume, a first diaphragm separating the first internal volume into a first front volume and a first back volume such that the first front volume has a first sound outlet port, a second diaphragm separating the second internal volume into a second front volume and a second back volume such that the second front volume has a second sound outlet port, a motor disposed at least partially inside the housing such that the motor including an armature mechanically coupled to both the first diaphragm and the second diaphragm, an acoustic seal between the first front volume and the second back volume such that the acoustic seal accommodates the mechanical coupling of the armature to one of the first diaphragm or the second diaphragm.

Abstract: A bioprinter and methods of using the bioprinter. The bioprinter permits selective three-dimensional movement of multiple nozzle assemblies during operation of the bioprinter. The bioprinter can be used to produce scaffold-free tissue constructs having a plurality of cellular elements interspersed among a semi-permeable vascular network. The bioprinter can also be used to print a tissue construct directly onto a tissue defect of a subject. The bioprinter can be provided as part of a bioprinting system that includes a scanner for imaging the tissue defect.

Abstract: A balanced armature receiver including a motor with a yoke for retaining magnets and fastening to an armature are disclosed. The yoke includes a close-ended wall structure formed of a soft magnetic material having multiple folded corners defining an armature passage. A first magnet retaining wall portion of the yoke is arranged in parallel with, and opposite, a second magnet retaining wall portion, wherein at least a portion of the first magnet retaining wall portion has a reduced thickness relative to other wall portions of the close-ended wall structure. The armature is connected to the reduced thickness portion of the first magnet retaining wall portion, thereby reducing an overall z-axis dimension of the motor.

Abstract: Sound-producing acoustic receivers are disclosed. The acoustic receiver includes a receiver housing with a first internal volume and a second internal volume, a first diaphragm separating the first internal volume into a first front volume and a first back volume such that the first front volume has a first sound outlet port, a second diaphragm separating the second internal volume into a second front volume and a second back volume such that the second front volume has a second sound outlet port, a motor disposed at least partially inside the housing such that the motor including an armature mechanically coupled to both the first diaphragm and the second diaphragm, an acoustic seal between the first front volume and the second back volume such that the acoustic seal accommodates the mechanical coupling of the armature to one of the first diaphragm or the second diaphragm.

Abstract: The present disclosure provides a fluorescent probe for detection of jasmonic acid (JA) and a preparation method thereof, and a detection method of JA, belonging to the technical field of component detection, The fluorescent probe for detection of JA includes a cobalt-based metal-organic framework (MOF) material, and aminated carbon quantum dots (CQDs) and a molecular imprinting polymer (MIP) that are distributed on a surface of the Co-MOF material; where the MIP has a molecular imprinting (MI) of the JA. In the present disclosure, the NCQDs are distributed on the surface of the Co-MOF material, and cobalt ions can undergo a coordination reaction with amino groups to change a charge distribution on a surface of the NCQD; meanwhile, the Co-MOF material can also avoid aggregation of the NCQDs to improve a detection stability.

Abstract: Two coils are wrapped in one of numerous different implementations. In one implementation, the two coils are wrapped about a portion of a bobbin that has at least three flanges. The first coil is disposed about a first portion of the bobbin between the first flange and the second flange, and a second coil is disposed about a second portion of the bobbin between the second flange and the third flange.

Abstract: Two coils are wrapped in one of numerous different implementations. In one implementation, the two coils are wrapped about a portion of a bobbin that has at least three flanges. The first coil is disposed about a first portion of the bobbin between the first flange and the second flange, and a second coil is disposed about a second portion of the bobbin between the second flange and the third flange.

Abstract: A sound-producing balanced armature receiver, as disclosed, includes a receiver housing with a first internal volume, a second internal volume, and a sound outlet. The receiver includes a first diaphragm separating the first internal volume into a first front volume and a first back volume and a second diaphragm separating the second internal volume into a second front volume and a second back volume.

Abstract: Sound-producing acoustic receivers are disclosed. The acoustic receiver includes a receiver housing with a first internal volume and a second internal volume, a first diaphragm separating the first internal volume into a first front volume and a first back volume such that the first front volume has a first sound outlet port, a second diaphragm separating the second internal volume into a second front volume and a second back volume such that the second front volume has a second sound outlet port, a motor disposed at least partially inside the housing such that the motor including an armature mechanically coupled to both the first diaphragm and the second diaphragm, an acoustic seal between the first front volume and the second back volume such that the acoustic seal accommodates the mechanical coupling of the armature to one of the first diaphragm or the second diaphragm.

Abstract: Coil bobbins for balanced armature receivers are disclosed. The balanced armature receiver bobbin includes a coil support member, at least two flanges, and a shoulder. The coil support member has an armature passage extending between a first end and a second end thereof. The flanges extending radially from the coil support member such that the first flange extends from the coil support member proximate the first end and the second flange extends from the coil support member proximate the second end. The shoulder extends from the first flange, with the first flange located between the shoulder and the coil support member. The shoulder has a plurality of conductive coil pads disposed on a bottom portion thereof.

Abstract: Sound-producing acoustic receivers are disclosed. The acoustic receiver includes a receiver housing with a first internal volume and a second internal volume, a first diaphragm separating the first internal volume into a first front volume and a first back volume such that the first front volume has a first sound outlet port, a second diaphragm separating the second internal volume into a second front volume and a second back volume such that the second front volume has a second sound outlet port, a motor disposed at least partially inside the housing such that the motor including an armature mechanically coupled to both the first diaphragm and the second diaphragm, an acoustic seal between the first front volume and the second back volume such that the acoustic seal accommodates the mechanical coupling of the armature to one of the first diaphragm or the second diaphragm.

Abstract: A hearing device and subassembly therefor includes a sleeve member configured for at least partial insertion into a user's ear canal, the sleeve member defining a cavity that receives and retains at least a portion of a sound-producing electroacoustic transducer. The sleeve member includes a cable interface, wherein an electrical interface of a sound-producing electroacoustic transducer received in the cavity is accessible via the cable interface. The device also includes on or more sensors integrated with the sleeve member and positioned to sense a biomarker or other condition when the sleeve member is at least partially inserted into the user's ear canal. The hearing device includes conductive traces integrated with the sleeve member, where at least one conductive trace is electrically connected to the sensor and electrically connectable via the cable interface.

Abstract: Sound-producing acoustic receivers are disclosed. The acoustic receiver includes a housing, a first diaphragm, and a motor. The housing has an internal volume separated by the first diaphragm into a first front volume and a first back volume such that the first front volume has a first sound outlet. The first diaphragm includes a first paddle movable about a first hinge. The motor is disposed in the housing and includes an armature mechanically coupled to the first paddle. The first hinge is located between opposite ends of the first paddle such that actuation of the armature pivots both ends of the first paddle about the hinge.

Abstract: Coil bobbins for balanced armature receivers are disclosed. The balanced armature receiver bobbin includes a coil support member, at least two flanges, and a shoulder. The coil support member has an armature passage extending between a first end and a second end thereof. The flanges extending radially from the coil support member such that the first flange extends from the coil support member proximate the first end and the second flange extends from the coil support member proximate the second end. The shoulder extends from the first flange, with the first flange located between the shoulder and the coil support member. The shoulder has a plurality of conductive coil pads disposed on a bottom portion thereof.

Abstract: Sound-producing acoustic receivers are disclosed. The acoustic receiver includes a receiver housing with a first internal volume and a second internal volume, a first diaphragm separating the first internal volume into a first front volume and a first back volume such that the first front volume has a first sound outlet port, a second diaphragm separating the second internal volume into a second front volume and a second back volume such that the second front volume has a second sound outlet port, a motor disposed at least partially inside the housing such that the motor including an armature mechanically coupled to both the first diaphragm and the second diaphragm, an acoustic seal between the first front volume and the second back volume such that the acoustic seal accommodates the mechanical coupling of the armature to one of the first diaphragm or the second diaphragm.

Abstract: Sound-producing acoustic receivers are disclosed. The acoustic receiver includes a receiver housing with a first internal volume and a second internal volume, a first diaphragm separating the first internal volume into a first front volume and a first back volume such that the first front volume has a first sound outlet port, a second diaphragm separating the second internal volume into a second front volume and a second back volume such that the second front volume has a second sound outlet port, a motor disposed at least partially inside the housing such that the motor including an armature mechanically coupled to both the first diaphragm and the second diaphragm, an acoustic seal between the first front volume and the second back volume such that the acoustic seal accommodates the mechanical coupling of the armature to one of the first diaphragm or the second diaphragm.

Abstract: An acoustic receiver includes a cover made from an electrically non-conductive material configured to cover an open end of a housing portion of the acoustic receiver. The cover has an inner surface and an outer surface. A motor is disposed on the inner surface, while electrical contacts are disposed on the outer surface. The motor is connected to the electrical contacts on the outer surface. Various electrical components, such as integrated circuits and sensors, are disposed on the outer surface. In one embodiment, the cover is a printed circuit board.

Abstract: An acoustic receiver includes a first receiver subassembly having a bottom housing plate with a motor assembly fastened thereto, and a second receiver subassembly having a closed-ended receiver housing sidewall fastened to the bottom housing plate that includes at least one sidewall opening where a portion of the acoustic receiver is disposed in the at least one sidewall opening.