36 results about "Bone conduction" patented technology

A mobile terminal includes a body having a front surface and a rear surface; a display unit formed on the front surface of the body; a frame disposed between the front surface and the rear surface, and configured to support the display unit; and a sound output device configured to transmit sound using bone conduction vibrations, and connected to the frame so as to transmit the vibration to the display unit.

The present invention discloses a preparation method for a chitosan-based porous scaffold with biological activity. According to the present invention, chitosan and inorganic micro/nanoparticles with biological activities are adopted as raw materials to prepare into slurry; a water-soluble aldehyde polysaccharide polymer is adopted as a cross-linking agent; a Schiff base cross-linking process and a freeze drying method are adopted to prepare a class of chitosan-based composite porous scaffold materials with biological activities, wherein porosities, pore sizes, mechanical properties, degradation performances, and bone conductions/bone inductions and the like can be regulated through the formula and the process conditions. According to the present invention, the porous scaffold provided by the present invention does not adopt harmful chemical cross-linking agents, and can not cause adverse effects to cells; with the cross-linked porous structure and a plurality of hydrophilic groups such as amino, carboxyl, hydroxyl and the like, the porous scaffold has high chemical stability in an aqueous phase with a wide pH range (pH range of 5-9), and has outstanding advantages of softness, high elasticity, swelling ratio of 30 times, and the like; the porous scaffold has advantages of imitation of natural bone extracellular microenvironment in aspects of the porous structure, the chemical composition, the surface chemistry and the like.

A bone conduction device, comprising: a sound input element configured to receive an acoustic sound signal; an electronics module configured generate an electrical signal representing said acoustic sound signal; and a transducer configured to generate motion of a mass component based on said electrical signal so as to generate one or more mechanical forces resulting in one or more of motion and vibration of a recipient's skull thereby causing sound perception, wherein one or more of the size and shape of said mass component is selectable at least partially based on a desired mechanical force to be generated by said transducer.

In a seat, a bass acoustic vibration transmission section and a treble acoustic vibration transmission section are arranged distinctively with respect to a seat occupant, such that those two acoustic vibration transmission sections are disposed independently of each other, thereby achieving both of the following two effects: an acoustic performance worthy of acoustic seat; and a seating comfort essentially required as a seat.

A vibration conduction unit is provided, which comprises a combination of: one bass speaker; a support plate to which that one bass speaker is secured; and a network cushion member of three-dimensional structure arranged on an anterior surface of the support plate. Such vibration conduction unit is disposed and accommodated in a cut-out region defined in a seat padding to a predetermined extent of covering an area of seat back which corresponds to a lumbar part of seat occupant, whereas on the other hand, a pair of treble speakers are respectively provided in a pair of local areas of the seat padding which correspond respectively to left-side and right-side shoulder portions of seat back, such that each of those two local areas of seat padding has an opening defined therein, wherein the opening lies anteriorly of an output side of each of the two treble speakers.

The invention discloses a loudspeaker, which comprises a shell assembly, a diaphragm assembly and an upper cover. The upper cover is arranged above the diaphragm assembly; the upper cover and the diaphragm assembly are fixedly arranged inside an upper edge step of the shell; and the shell assembly comprises an upper edge step of the shell, a magnet yoke, a magnet, a magnetic conducting plate and an elastic structure which connects the upper edge step of the shell and the magnet yoke into a whole, wherein the magnet yoke has a groove structure; the magnet is arranged inside the groove; and the magnetic conducting plate is arranged above the magnet. The diaphragm assembly comprises an elastic sheet, a vibrating diaphragm and a coil, wherein the vibrating diaphragm is connected with an annular structure of the elastic sheet; and the coil is arranged at a curved surface junction of the vibrating diaphragm and is arranged inside the magnet yoke. Due to the arrangement of the elastic structure, the loudspeaker has the bone conduction characteristic, fulfills the aims of protecting the hearing of a user and producing perfect sound, and also has the advantages of simple and convenient manufacturing technology, high compatibility with conventional products, and easy replacement.

A bone conductive sound generating device is provided and includes a sound generating mechanism and a fixing mechanism. The fixing mechanism is configured to act on the sound generating mechanism, such that the sound generating mechanism adheres to and fit with a back of an auricle of a user at least when the sound generating mechanism is in use. Accordingly, the present application may improve the sound quality of the bone conductive sound generating device, improving listening experience for the user.

The invention is a kind of guide glasses suitable for the blind based on the automatic positioning system, comprising: a frame (1), a lens (2), a camera (3), a control center (4), a positioning system (5), an information transmission device (6) ), headset (7), switch key (8), charging jack (9), headset jack (10), bone conduction earphone jack (11), speaker (12). It has the following functions: the positioning system (5) has its own positioning device to quickly locate the location of the blind; the control center (7) provides route guidance to the blind based on the road information in the database through voice recognition technology; the front end is equipped with a camera (3 ), identify obstacles in front and avoid obstacles; use bone conduction earphones to provide voice services to the blind. The invention has deep potential value and can better provide services and help for the blind.

The disclosed invention is based on hydroxyapatite, biocompatible glass and silicon, aiming to develop an improved bone substitute, which presents higher mechanical resistance, bioactivity and osteoregeneration, and susceptible of being used in several medical and surgical fields, with application in the treatment of bone disease caused by trauma or genetic factors, as osteoconductive support for cellular growth. The abovementioned bone substitute comprises hydroxyapatite, a biocompatible glass of the P₂O₅—CaO system in a percentage up to 10 wt % relatively to the hydroxyapatite weight, and a silicon source in a concentration up to 10 wt % relatively to hydroxyapatite and biocompatible glass weight. The preparation process of the disclosed bone substitute consists of liquid phase sintering of a homogeneous mixture of hydroxyapatite, biocompatible glass and silicon source preferentially within a temperature range of 1100-13500 C, which allows glass melting and fusion throughout hydroxyapatite structure leading to the occurrence of several ionic substitutions.

The invention discloses a mineralized bone tissue engineering scaffold. The mineralized bone tissue engineering scaffold comprises a porous polyester/amphiprotic ionized hydrogel composite scaffold and a calcium-phosphate mineralization material formed in the porous polyester/amphiprotic ionized hydrogel composite scaffold in situ, wherein the porous polyester/amphiprotic ionized hydrogel composite scaffold comprises a porous polyester bone scaffold and amphiprotic ionized hydrogel compounded in the porous polyester bone scaffold. The invention also discloses a preparation method of the mineralized bone tissue engineering scaffold. The composite scaffold is capable of carrying out efficient sustained release of bone growth factors, giving efficient bone conduction and bone induction performance to the surface of the overall scaffold, accelerating functional repair of bone defects under ultralow dosage of rhBMP-2 and improving the biological safety performance of the scaffold material.

Aspects of the present invention provide implants for augmentation, stabilization, or defect reconstruction of bone tissue, comprising a scaffold portion structured to provide shape to the implant, the scaffold portion comprising one or more of the following: one or more polylactic acid isomer; one or more polyglycolic acid isomer; and/or allogenic bone material, or similar compound.

The invention discloses a preparation method of high-dispersity nano-apatite. The high-dispersity nano-apatite is prepared through the following steps: reacting carboxylate cyclodextrin with calcium salt, adding inorganic phosphorous source, regulating pH value to about 10, heating and stirring to react for 3-6 hours at 30-90 DEG C, standing overnight, pouring the supernatant liquid, washing untilthe pH value is about 7, and washing for 2-3 times by using absolute ethyl alcohol thereby preparing the high-dispersity nano-apatite. The nano-apatite prepared through the preparation method disclosed by the invention not only has good dispersity in the hydrophilic solvent, but also can maintain high dispersity in a hydrophobic solution such as dichloromethane, so that the nano-apatite is expected to compound with different polymers in a high content so as to manufacture composite material with high bone conduction to be used as the orthopedics material.

The invention discloses an electronic device comprising a housing, an output module, a vibration module, a piezoelectric element, an imaging module and a receiving module. The output module comprisesa package shell, an infrared fill light, and a proximity infrared lamp. The package shell comprises a package substrate, and the infrared fill light and the proximity infrared lamp are packaged in thepackage shell and are carried on the package substrate. The piezoelectric element is combined with the vibration module and is spaced from the output module. The piezoelectric element is used for deforming when an electrical signal is applied to vibrate the vibration module. The imaging module comprises a camera shell and a lens module. The lens module is accommodated in the camera shell and corresponds to a light outlet through hole in the top surface of the camera shell. The receiving module is disposed at a first sub-top surface and comprises a proximity sensor and/or a light sensor. The integration degree of the output module is high, and the receiving module and the imaging module are set compactly, thereby saving the installation space of the electronic device; and the electronic device uses the piezoelectric element and the vibration module to realize bone conduction sound transmission, and effectively guarantee the privacy of call contents.

The invention discloses an electronic device, and the electronic device comprises an enclosure, an output module, a vibration module and a piezoelectric element. The output module comprises a packaging shell, an infrared lamp and a light-transmitting component. The packaging shell comprises a packaging substrate, the infrared lamp and the light-transmitting component are packaged in the packagingshell, and the infrared lamp is supported on the packaging substrate. The light-transmitting component is located on a light-emitting light path of the infrared lamp, and the light-transmitting component comprises a base body and a telescopic film. The base body is provided with a light-transmitting hole, and the telescopic film is accommodated in the light-transmitting hole. The telescopic film can deform under the action of an electric field and change an area of being shaded of the light-transmitting hole, and the infrared light emitted by the infrared lamp can emit out from the packaging shell with different field angles. The vibration module is mounted on the shell. The piezoelectric element is combined with the vibration module and spaced from the output module, and the piezoelectricelement is used for generating deformation while being applied with electric signals so as to enable the vibration module to vibrate. The electronic device realizes bone-conduction sound conduction through the piezoelectric element and the vibration module and can effectively guarantee privacy of call contents.

The present invention is a small device containing at least the following elements: a MEMS microphone, an amplifier, a microprocessor with audio frequency filters, a wireless transmitter, and a battery. The device may be placed behind the ear of the user on a bony protrusion of the skull and may be held in place by a variety of known methods, including adhesives such as spirit gum, adhesive tape, and a small circular adhesive bandage. The MEMS microphone detects sounds transmitted through the skull by bone conductance and the microprocessor analyzes the sounds to determine whether they are associated with a bruxism event. If so, data associated with the sounds are sent via the wireless transmitter to an external device. The data may be stored for later review by the user or medical professional, or may trigger a response such as an auditory or vibratory alarm.

The invention relates to the technical field of communication devices, and in particular, to a completely waterproof mobile phone, comprising a mobile phone main body, wherein the mobile phone main body comprises a housing back cover, a housing main screen is installed on the surface of the housing back cover, and a waterproof sealing ring is installed at a contact site of the housing main screenand the housing back cover to form a mobile phone shell; a PCBA main board is installed in the mobile phone shell, a rectangular notch is arranged in the middle of the left side of the PCBA main board, a battery is installed in the rectangular notch, and the battery is electrically connected with the PCBA main board through a conducting wire; the housing main screen is electrically connected withthe PCBA main board through a liquid crystal screen wire; and the completely waterproof mobile phone adopts wireless charging, piezoelectric ceramic sound wave vibration sensing type sound transmission, contact bone conduction type sound transmission and a Bluetooth earphone, and rejects a sound guide hole, a sound transmission hole, an audio port, a power switch key and a volume key on the traditional mobile phone, thereby greatly improving the waterproof performance.