451 results about "Occlusion" patented technology

A device for repairing an anatomical defect such as a patent foramen ovale possesses spring-like characteristics enabling it to be stored within, and discharged from, the distal end of a catheter when the device is in the compressed state and to assume a defect-occluding configuration when the device is in the expanded, or noncompressed, state.

A method for operating a surgical system including placing a handpiece in an operative relationship with an eye for a surgical procedure. The method also comprises supplying irrigation fluid from an irrigation fluid source to the eye and applying vacuum from an aspiration source to the handpiece in order to aspirate the irrigation fluid from the eye through the handpiece. The method further comprises sensing a value of an occlusion indicating parameter corresponding to an occlusion of the handpiece and, from the sensing of the value, determining a duration of occlusion. The method additionally comprises controlling a controlled system parameter based at least in part on the duration of occlusion.

The invention discloses a method for building a three-dimensional tooth-and-jaw fusion model. The method includes the steps that data is collected in the occlusion state, and a skull CT image is rebuilt, laser scanning of a gypsum occlusion model is subjected to digital processing; picture processing and the image matching function are based on a reverse engineering software Geomagic Studio, a method based on point matching and the iterative algorithm are combined in the reverse engineering software, a gypsum dentition occlusion model and CT rebuilt dentitions are matched, indistinct CT rebuilt dentitions are replaced, and finally, the three-dimensional tooth-and-jaw fusion model matched in the occlusion state that a CT rebuilt jaw model and the gypsum dentition occlusion model are integrated is obtained. CT imaging artifacts caused by intraoral metal and the error, caused by upper-and-lower-jaw dentition overlapping in the occlusion state, between the occlusion relationship and the practical intraoral occlusion position in the fusion model are reduced, and therefore the accuracy of computer aided design and the treating effect are improved.

The invention relates to a hinge structure and a range hood smoke barrier connecting structure using the same. The hinge structure is characterized by comprising a base and a rotary shaft assembly. An occlusion portion is arranged on the top of the base, an accommodating hole is formed in the base, and an elastic tooth is arranged in the accommodating hole. The rotary shaft assembly is closely matched and connected with the base in a rotation mode, a fixing shaft matched with the occlusion portion is arranged on the rotary shaft assembly, a plurality of tooth grooves connected together are formed in the rotary shaft assembly, the elastic tooth is clamped in a certain tooth groove of the plurality of tooth grooves and can slide to an adjacent tooth groove under the effect of external force. Compared with the prior art, the hinge structure has the advantages of being novel and simple, low in cost and capable of being applied to the range hood smoke barrier connecting structure so that opening and closing of a range hood smoke barrier do not require electricity, and opening degree of the range hood smoke barrier can be adjusted according to requirements.

In the invention, a method for using a dynamic virtual articulator for simulating occlusion during a change in the initial position of the lower jaw or fragments thereof, and for modeling the position of the teeth in relation to one another and the position and shape of false teeth is described, said method being carried out with a computer. The method includes the following steps: providing a virtual articulator comprising a virtual three-dimensional model of the upper jaw and dental arch and a virtual three-dimensional model of the lower jaw and dental arch, resembling the upper jaw and upper teeth and the lower jaw and lower teeth, respectively, of the patient; and providing simulated movements of the virtual upper jaw and the virtual lower jaw in relation to one another for simulating dynamic occlusion, during which penetrating and non-penetrating contact may occur between teeth in the virtual upper and virtual lower jaw. Providing the virtual articulator further includes providing virtual three-dimensional models of the temporomandibular joints, resembling the heads of the lower jaw, the mandibular fossae, and the articular tubercles of the temporal bones, and carrying out simulated movements of the jaws in relation to one another is preceded by clinically or virtually setting initial and final positions. Furthermore, the virtual surfaces of the heads of the lower jaw and the virtual surfaces of the articular tubercles and the mandibular fossae of the temporal bones of the patient are disengaged. Also, a non-volatile machine-readable medium is described with a stored code containing instructions which, when executed, allow the proposed method to be carried out. The group of inventions makes it possible to provide a virtual articulator that simulates as closely as possible the actual processes occurring in the patient's mouth.

The invention provides an oral appliance manufacturing method for adjusting the relative position of the upper jaw and the lower jaw. The appliance manufacturing method includes the steps that an integrated upper-jaw digital model integrated with an upper-jaw pad model and an upper-jaw tooth model and an integrated lower-jaw digital model integrated with a lower-jaw pad model and a lower-jaw tooth model are generated; a manufacturing system is controlled by the integrated upper-jaw digital model and the integrated lower-jaw digital model to manufacture an upper-jaw appliance body and a lower-jaw appliance body, wherein the upper-jaw appliance body is basically a negative model of a positive model represented by the integrated upper-jaw digital model, the lower-jaw appliance body is basically a negative model of a positive model represented by the integrated lower-jaw digital model, wherein the relative position of the upper jaw and the lower jaw of a patient conforms to a correcting target through the integrated upper-jaw digital model and the integrated lower-jaw digital model under the occlusion state of wearing the upper-jaw appliance body and the lower-jaw appliance body.

The invention provides a guide plate for stretching an alveolar bone to form a bone as well as a manufacturing method and a using method of the guide plate. The guide plate comprises an occlusal plate, a positioning plate and a guide plate body; the occlusal plate supplied for human occlusion is arranged in a U shape and extends into a mouth of a person from the opening side; the bottom of the occlusal plate is connected with the middle part of the guide plate body through the positioning plate; the guide plate body is wholly arranged in an arch shape, is adhered to the alveolar bone of the person and is provided with two transverse rows of through holes; and an osteotomy line is arranged between the two rows of through holes for capability of accurately stretching the alveolar bone to form the bone directionally, so that the guide plate is particularly suitable for a case of increasing the thickness and the height of the alveolar bone at the same time, can avoid an important anatomical structure, improves the safety of a surgery, guides a doctor to successfully and safely finish the surgery, improves the surgery accuracy efficiency, lightens burdens of the doctor and a patient, in addition, has a simple structure, is liable to manufacture and convenient to apply and is suitable for being popularized and used in a large scale.

The invention discloses a manufacture method of a digital space retainer and relates to the technical field of pediatric dentistry. The manufacture method comprises the following steps: S1, scanning the oral cavity of a patient by using an intraoral scanner to acquire digital models of the maxilla and the mandible of the patient and acquire the occlusion relationship; S2, designing a digital modelof a digital space retainer by combining designing software based on the acquired digital models; and S3, manufacturing the space retainer by applying a PEEK/PEKK material and combining the digital model of the digital space retainer. According to the method, the digital model is acquired by scanning the oral cavity of a patient by adopting the digital scanning technology, intraoral impression manufacture is not needed, and the situation of discomfort, even nausea and vomiting generated when an impression is manufacture for a patient can be avoided; and the digital space retainer has a largeappearance improvement, excellent biocompatibility, half radiopacity of ray and plaque adhesion prevention by adopting the specific high-molecular material PEEK/PEKK.

Disclosed is a photography tool which can use various image capturing CCD sensors having different external shapes, facilitates creation of an image exhibiting excellent reproducibility by positioning various sensors accurately, suppresses strangeness by stabilizing the occlusion state in the oral cavity, and ensures good holding state. In a photography tool (1) with an exclusive sensor holder for mounting a CCD sensor for capturing a dental X-ray image, a sensor mounting portion corresponding to the external shape of a sensor (16) is formed by inclining the sensor supporting substrate (18) of a sensor holder (17) at a predetermined angle and projecting curved portions (19, 20) from the upper and lower ends of the supporting substrate (18), a fitting protrusion (25) is provided on the supporting substrate (18), a fitting groove (12) to which the fitting protrusion (25) is fitted and which has the identical cross-sectional shape is provided in the main block (9) for occlusion, the shape of the sensor mounting portion is changed every time when the external shape of the sensor (16) is different, various holders (17); are made by changing the vertical position of the sensor mounting portion every time when the image capturing position for a tooth (28) to be inspected is different, and each holder (17) is provided with the fitting protrusion (25) of the identical shape.

The invention relates to a pharynx secretion collection device, which comprises a handle and a collection mechanism, wherein the collection mechanism comprises an occlusion table, a tongue pressing component, a sampling component and an auxiliary observation component, wherein the occlusion table is arranged on one end of the handle; the tongue pressing component comprises a tongue depressor; oneend of the tongue depressor is arranged on one side end of the occlusion table; the sampling component comprises a sampling rod and a clamping unit for clamping the sampling rod, wherein the clampingunit is arranged in the middle of the occlusion table; the auxiliary observation component comprises a camera and a display screen, wherein the camera is arranged on the side surface, which is far away from the handle, on the occlusion table; and the camera collects the images of the sampling rod and the tongue depressor in real time and shows the images in the display screen. During sampling, themouth of a patient is under a closing state, a possibility that viruses in the spray of the patient spread is reduced, and meanwhile, medical care personnel can observe the state of the oral cavity of the patient and the position of the pharynx so as to realize accurate sampling.

The invention belongs to the field of medical instruments and relates to a use method of resin, a use method of polyether-ether-ketone and a manufacturing method of a deciduous tooth preformed crown. The resin is used as the material of the deciduous tooth preformed crown; the polyether-ether-ketone is used as a material of the deciduous tooth preformed crown. The manufacturing method of the deciduous tooth preformed crown comprises the following steps of: S1, manufacturing a digital model of the deciduous tooth preformed crown; S2, according to the digital model, performing digital cutting on an initial material to obtain a semi-finished product of the deciduous tooth preformed crown; and S3, polishing the surface of the semi-finished product of the deciduous tooth preformed crown to obtain a finished product of the deciduous tooth preformed crown. According to the manufacturing method of the deciduous tooth preformed crown of the invention, the3D digital model of the deciduous tooth preformed crown isestablished; and 3D printing is performed to obtain the deciduous tooth preformed crown according to the parameters of the 3D digital model. According to the use method of the resin, the use method of the polyether-ether-ketone and the manufacturing method of the deciduous tooth preformed crown of the invention, deciduous teeth, the occlusion function and the growth and development of an oral-maxillofacial region are ensured.

The invention provides a complete denture reconstruction method and a device thereof. A delivery denture structure filled with an impression material is placed on the palate and the mandible of a patient, and through occlusion of the patient, the static delivery of the gum of the patient is carried out; through the occlusion with a first recording device by the patient, the occlusion vertical height, the facial midline, the occlusion horizontal line, eye pupil horizontal connection, and the horizontal line from the wing of the nose to the earhole of the patient are rapidly recorded, important reference data for facial tooth reconstruction are provided; through the occlusion with a second recording device by the patient, the facial movement conditions during chewing and speaking of the patient are rapidly recorded, and through the recording with metal scales, the movement data of the palate and the mandible in front-back direction, left-right direction and vertical direction, and like of the oral cavity of the patient are obtained. The sampling is rapid, the judgment is rapid, the manufacturing errors of the denture is reduced, the comfort is high, the data of the occlusion vertical line and the horizontal line of the patient can be rapidly recorded at one time, and so that a good facial tooth reconstruction effect is provided.

The invention provides a digital design and cutting processing method of a personalized implant ball cap base station. The method comprises the following steps: Step 1, acquiring tooth information ofa patient reflected on an implantation work model; Step 2, acquiring a position and interface data of the implant on the model; Step 3, taking a ball cap model prestored in a dental implant design software, and adjusting an installation position of the implant abutment and the ball cap so that the installation position of the ball cap on the implant abutment is matched with an occlusion relation of upper teeth and lower teeth and gum information; Step 4, connecting the interface model data of the planting abutment with the ball cap model data of the placed position by using dental implant design software to generate complete data of the ball cap planting abutment; and Step 5, programming and calculating the data of the ball cap implant base station by using CAM software, and cutting the preformed planting titanium column by using a machine tool to obtain a personalized ball cap implant base station product.

The invention discloses a bracket-free invisible orthodontic vertical control device used after an orthognathic operation. The device comprises an upper jaw appliance, a lower jaw appliance and a plurality of cushion blocks; and the plurality of cushion blocks are positioned on the opposite sides of the upper jaw appliance and the lower jaw appliance, so that an occlusion gap is formed between the upper jaw appliance and the lower jaw appliance. At least one cushion block is provided with a correction guide structure in the occlusion direction, and the correction guide structure is used for keeping the upper jaw appliance and the lower jaw appliance at preset relative positions in an occlusion state. On one hand, direct contact between the upper jaw appliance and the lower jaw appliance can be blocked by arranging the cushion blocks, so that instable occlusion of upper and lower jawbones due to fulcrum tilting formed by contact of individual teeth is avoided; and on the other hand, when the upper and lower dentitions are in the rest position, the upper and lower occlusion relationship is unique, so that the influence on the jaw stability due to local stress application of the appliance to the teeth is reduced. In addition, during use, small displacement of the upper and lower jawbones due to intermaxillary traction can be avoided, and the aim of consolidating the orthognathic treatment effect is achieved.