11 results about "Auditory ossicle" patented technology

The present application relates to the technical field of artificial implant medical device surface modification and middle ear hearing reconstruction, and discloses a processing method for enhancing the fixing stability of an artificial auditory ossicle prosthesis, the prosthesis and application. The method comprises the following steps: after the surface of the auditory ossicle prosthesis in contact with the middle ear tissue is cleaned, a polydopamine layer is formed in a basic dopamine solution, then gelatin, hyaluronic acid or cellulose sulfate is connected to the surface of the polydopamine layer through a carbodiimide activation system to form a viscous functional layer, and the dry sponge-like structure is obtained through freeze-drying. The functional layer can quickly rehydrate and restore the adhesion state after contacting with human blood or tissue fluid, thereby improving the fixing stability of the artificial auditory ossicle prosthesis in the initial implantation stage and reducing the risk of displacement or dislocation.

The invention provides a magnesium alloy-hydroxyapatite composite bone prosthesis and a preparation method thereof.The preparation method of the magnesium alloy-hydroxyapatite composite bone prosthesis comprises the following steps that a target bone is scanned through CT, and a three-dimensional model containing an appearance structure and an internal structure is obtained; simplifying the appearance structure of the bone prosthesis, simulating an internal porous structure of the bone prosthesis, and designing a three-dimensional structure of the bone prosthesis; preparing hydroxyapatite printing slurry; printing a hydroxyapatite bracket by using a three-dimensional photocuring technology; carrying out cleaning, degreasing and high-temperature sintering on the hydroxyapatite scaffold; injecting molten magnesium alloy into the hydroxyapatite stent by using a pressureless permeation technology; and removing redundant materials by adopting a cutting tool, and grinding and polishing to obtain the magnesium alloy-hydroxyapatite composite bone prosthesis. The prepared magnesium alloy-hydroxyapatite composite auditory ossicle prosthesis has the advantages of being stable in positioning, not prone to shifting and disengaging, high in sound conduction efficiency, controllable in cost and capable of achieving personalized customization.

The invention relates to a combined auditory ossicle prosthesis. The combined auditory ossicle prosthesis comprises a top disc and a connecting rod, the top disc comprises a fixed disc and a detachable outer ring which is detachably connected with the outer ring of the fixed disc; the lower surface of the top disc is provided with a connecting seat assembly extending downwards from the center, and the connecting seat assembly comprises a connecting hole penetrating in the axial direction. The connecting rod is an elastic rod body formed by sequentially and alternately connecting first unit sections and second unit sections with the outer diameters changing alternately in the axial direction. And one end of the connecting rod is detachably connected with the connecting seat assembly through the connecting hole, and can axially move in the connecting hole to adjust the insertion depth. The diameter of the top disc of the prosthesis is adjustable, the length of the connecting rod is graded and adjustable, partial / all replacement operations are interchangeable, a single product covers the requirements of multiple specifications, an operator can accurately and finely adjust according to the requirements in an operation, perfect connection of the prosthesis with a stapedius base plate and a tympanic membrane is achieved, optimal sound transmission mechanical coupling is achieved, and the problems that selection is difficult and models are not matched are fundamentally solved.

The utility model discloses an auditory ossicle prosthesis capable of rotating in two dimensions and adjusting and locking the length. The auditory ossicle prosthesis comprises a first fixing element connected to a periosteum and a second fixing element connected to a stapes plate, the first fixing element is installed at the head end of the first rod part, the tail end of the first rod part is installed at the head end of the second rod part in a pitching rotating mode, and the first rod part can be locked on the second rod part after angle adjustment is completed. The tail end of the second rod part can be horizontally and rotatably mounted in the second fixing element, the second rod part after angle adjustment can be locked on the second fixing element, and the length of the second rod part can be adjusted in the axial direction of the second fixing element under the action of external force. Two-dimensional rotation adjustment of the ossicle prosthesis, locking after two-dimensional rotation adjustment and length adjustment can be achieved.

The application discloses a prosthesis for ossicular chain reconstruction, which is used for replacing or bridging at least one element of an ossicular chain of a human being and comprises a first coupling unit arranged at a proximal end and used for matching with a tympanic membrane and receiving vibration brought by sound, a second coupling unit arranged at a distal end and mechanically connected with a stapes, and a connecting piece connected between the first coupling unit and the second coupling unit and used for transmitting vibration energy; the connecting piece is made of a material with deformation ability, so that the connecting piece can be reciprocally bent to adjust an angle; and the first coupling unit is a spiral coil disc. The application has the advantages that the spiral coil disc is used as the first coupling unit, the spiral structure of the spiral coil disc is easy to adjust in shape according to requirements during an operation, and the application is reduced in displacement and out of position; in addition, the connecting piece is made of a material with deformation ability, so that the connecting piece is easy to adjust during the operation, the prosthesis does not need to be additionally replaced or cut, the operation time is reduced, and the prosthesis can keep a continuous tension, so that the risk of displacement and out of position of the prosthesis is reduced.

The invention relates to the technical field of medical anatomical models, in particular to a 3D printing high-reduction temporal bone specimen preparation method which comprises the steps of data acquisition and three-dimensional modeling, model optimization and modular design, partition 3D printing forming, soft tissue simulation layer preparation and integration and assembly and function integration. Different-precision image data fusion modeling, a partition printing strategy and a multi-hardness silica gel composite technology are adopted, an elastic connector and a pressure-adjustable blood vessel system are integrated, high-fidelity reduction of fine structures such as temporal bone structures, auditory ossicles and nerve blood vessels is achieved, anatomical details and physiological functions of the prepared specimen are highly reduced, and the accuracy of the specimen is improved. The device is suitable for operation training, preoperative simulation and teaching demonstration of the otolaryngology department, and has the functions of high simulation, strong interaction, safety and reusability.

This invention provides an optically-based fully implantable cochlear implant device, comprising: an optical sensing module for emitting a light source and receiving light signals reflected back from a sound vibration module; a photoelectric conversion module for converting the received light signals into alternating current (AC) signals; a sound processing module for processing sound information and converting the AC signals into direct current (DC) signals; a decoding stimulation module for decoding sound information and converting the DC signals into pulse signals; cochlear stimulation electrodes for performing auditory nerve electrical stimulation based on the pulse signals; and an implantable power supply module for supplying power. This invention utilizes non-contact optical sound sensing technology, which does not affect the stability of the tympanic membrane and ossicles, avoiding the risk that even slight displacement after long-term implantation can affect hearing. It improves the long-term reliability and stability of the acoustic sensors, thereby extending the overall lifespan of the fully implantable cochlear implant.

The utility model discloses an auditory ossicle prosthesis capable of accurately adjusting length and convenient to install, which is used for replacing or bridging at least one link of a human auditory ossicle chain. Comprising a first fixing element mechanically connected with a periosteum or a link of an auditory ossicle chain and a second fixing element mechanically connected with another link or part of the link of the auditory ossicle chain or directly connected with an inner ear; the first fixing element is connected with an external threaded rod, the second fixing element is connected with an internal threaded sleeve, the external threaded rod is in threaded connection with an internal threaded hole of the internal threaded sleeve, and the external threaded rod is in threaded connection with a locking nut used for locking and fixing the external threaded rod and the internal threaded sleeve. According to the auditory ossicle prosthesis, the length of the auditory ossicle prosthesis can be accurately adjusted through the threaded fit of the external threaded rod and the internal threaded sleeve; after adjustment is completed, locking and fixing can be conducted through a locking nut, so that the overall rigidity of the auditory ossicle prosthesis is guaranteed; and the sound conduction effect is enhanced.

The utility model provides a fully-implantable artificial cochlea device based on optics, and the device comprises an optical sensing module which is used for emitting a light source and receiving an optical signal reflected by a sound vibration module; the photoelectric conversion module is used for converting the received optical signal into an alternating current signal; the sound processing module is used for processing sound information and converting the alternating current signal into a direct current signal; the decoding stimulation module is used for decoding the sound information and converting the direct current signal into a pulse signal; the cochlea stimulation electrode is used for performing auditory nerve electrical stimulation based on the pulse signal; and the implanted power supply module is used for supplying power. Through the non-contact optical sound sensing technology, the stability of the tympanic membrane and the auditory ossicle of the human body cannot be affected, the risk that the hearing effect is affected by tiny displacement after long-term implantation is avoided, the long-term reliability and stability of the acoustic sensor are improved, and therefore the service life of the whole full-implantation type artificial cochlea is prolonged.

The invention relates to the technical field of image processing, and discloses an auditory ossicle defect index measurement method and device, equipment and a storage medium. The method comprises the following steps: firstly, cutting an ear medical image to obtain an inner ear image sequence; next, performing image segmentation on the inner ear image sequence to obtain a segmented image sequence; and then, under the condition that the segmented image sequence comprises auditory ossicle information, performing auditory ossicle defect part detection based on the inner ear image sequence and the segmented image sequence so as to accurately determine a part defect result. Finally, accurate parameter measurement is carried out according to a part defect result, more comprehensive index parameters are obtained, detailed preoperative ear anatomical morphology data are provided for a doctor, and the doctor is assisted in making an individualized treatment scheme. Therefore, visual and accurate operation guidance can be provided for an auditory ossicle implantation operation, preoperative evaluation, operation planning and execution can be effectively supported, and the diagnosis and treatment efficiency and quality of ear diseases are improved.

An ossicular prosthesis having a first fastening element designed as a head plate for contact with the tympanic membrane, a second fastening element for mechanical connection to a member of the ossicular chain or the inner ear, and a shaft-shaped connecting element connecting the two fastening elements in a manner conducting sound. The first fastening element has a through-bore for receiving the connecting element and can be narrowed to provide fixation. The connecting element protrudes through the through-bore onto and carries a third fastening element designed for connection to a member of the ossicular chain or the inner ear. The connecting element can be easily separated above or below the first fastening element. This arrangement offers middle ear surgeons a simple and quick option to choose from a range of different prosthesis types immediately before inserting a selected prosthesis into the patient's middle ear.