81 results about "Jaw movement" patented technology

A jaw movement mechanism for surgical tools has improved mechanical efficiency and other advantages. The jaw movement mechanism controls the orientation and position of a movable jaw relative to a fixed jaw through a range of movement of the movable jaw. The jaws maintain a parallel orientation throughout a portion of the range of movement of the movable jaw. The jaws maintain an angular relationship throughout a portion of the range of movement of the movable jaw.

A filtering face-piece respirator 10 that has a support structure 16 and a filtering structure 18. The filtering structure 18 includes first and second transversely extending members 26, 28 that can move toward and apart from each other in the longitudinal direction. The filtering structure 18 has a filtration layer 52 and a pleat 58. The pleat 58 allows the filtering structure 18 to contract and expand when the first and second transversely-extending members 26, 28 move toward and apart from each other, respectively. This ability to expand and contract in an accordion-like manner enables the mask body to better accommodate wearer jaw movement.

The invention relates to an experiment apparatus for simulating a pitching / jawing / rolling over three-freedom degree forced movement of an aircraft in a wind tunnel. The apparatus comprises an experiment apparatus support, a pitching movement device, an L type rocking arm, a jawing movement supporting rod, and a rolling over movement supporting rod. The apparatus is mainly characterized in that: the central axis of the pitching movement device, the central axis of the jawing supporting rod, and the central axis of the rolling over supporting rod are perpendicular mutually; and the three central axises are intersected at one point. The pitching movement device is fixed on the experiment apparatus support and is connected with one end of the L type rocking arm, so that the L type rocking arm is driven to make pitching movements. The other end of the L type rocking arm is connected with the jawing movement supporting rod; a rotating shaft of the jawing movement supporting rod is connected with the rolling over movement supporting rod by a connection rod, so that the rolling over movement supporting rod is driven to make jawing movements; and a rolling-over rotating shaft of the rolling over movement supporting rod is fixedly connected with a model. The rolling over movement supporting rod, the jawing movement supporting rod, and the rotating shaft of the pitching movement device are driven by a motor; and a decelerator is added at the front end of the motor that is controlled by a computer. Therefore, the experimental model can make movements according to a given movement role; and a feedback control algorithm is used to improve control precision.

The invention discloses a dental jaw movement locus recording device and a dental jaw relationship transferring method. The dental jaw relationship transferring method comprises the following steps of carrying out digital dental jaw recurrence; extracting an optimal occlusion locus from a plurality of obtained dental jaw movement loci; driving an integral three-dimensional dental jaw by an optimal occlusion locus; and simulating the real lower jaw movement relative to an upper jaw so as to finish the transfer of the dental jaw relationship. According to the dental jaw relationship transferring method disclosed by the invention, movement loci are analyzed by a machine self-learning system based on a distance-weighted nearest neighbor algorithm so as to bring good robustness for noise in the trained movement locus data, k neighbor weighted averages are taken, the influence of an isolated noise movement locus is eliminated so as to obtain a real lower jaw movement locus, the one-sidedness for obtaining a single lower jaw movement locus is avoided, and the real lower jaw movement locus is utilized to drive the integral three-dimensional dental jaw to simulate the real lower jaw movement relative to the upper jaw so as to realize the transfer of the dental jaw relationship.

The invention relates generally to an apparatus for acquiring, holding, and enabling the movement of a cassette-shaped article, such as a reagent or sample cassette, which may be part of an automated diagnostic analyzer, such that the apparatus can tolerate a significant degree of cassette misplacement and / or misalignment during the acquisition maneuver. The invention provides simultaneous two-dimensional movement of the acquiring gripper jaws such that the inter-jaw distance decreases at the same time as movement in an upward vertical direction is provided while the jaw movement is adequately smooth so as not to disturb the physical state of the sample.

The invention relates to a method for designing a virtual dental articulator for the functionality occlusal plane of a tooth crown and bridge. The method includes the following steps that (1) the three-dimensional trail information of lower jaw feature movement during individual chewing movement is recorded by a lower jaw movement trail analyzer; (2) the working coordinate system of the lower jaw movement trail analyzer and a dentition three-dimensional scanning coordinate system are subjected to registration and fusion; (3) static intercuspal occlusion tooth crown and bridge prosthesis CAD data are established; (4) an automatic virtual occlusion detection and automatic tooth migration platform is established; (5) automatic detection for virtual occlusion is conducted; (6) automatic virtual tooth migration is carried out, so that the CAD data of the tooth crown and bridge with the functionality occlusal plane are established. According to the method, the individual chewing feature movement of each person is simulated, precise quantitative automatic virtual occlusion detection and automatic virtual tooth migration are achieved, repeated adjusting and grinding are avoided when a patient tries on the prosthesis, and therefore the precision and efficiency for making the prosthesis are greatly improved.

A method and apparatus for performing simulation display of the three-dimensional shapes and occlusal contact region of the upper and lower tooth rows at a high speed. A jaw movement sensor fits an examinee, and data on jaw movement of the examinee is acquired. An impression plate including a rigid flat plate having a top surface and a bottom surface each coated with an impression material inserted between the examinee's upper and lower tooth rows to which the jaw movement sensor is fitted, and the examinee performs a temporary occlusion. Impressions left on the impression material and a gauge mark provided on the rigid flat plate are measured by using a three-dimensional measuring instrument, whereby the three-dimensional shape data of the upper and lower tooth rows and gauge mark are acquired. Simulation display of movement of the aforementioned is performed at a time of temporary occlusion and jaw movement data.

A new subband feedback cancellation scheme is proposed, which can provide additional static gain without introducing audible artifacts. The subband feedback cancellation scheme employs two cascaded narrowband filters Ai(Z) and Bi(Z) and a fixed delay, instead of a single filter Wi(Z) and a delay representing the feedback path within each subband. The first filter, Ai(Z), is called the training filter, which models the static part of the feedback path on the ith subband, which includes the microphone, receiver, ear canal resonator and other relatively static parameters. The training filter can be implemented as a FIR filter or an IIR filter. This second filter Bi(Z) is called the tracking filter and is usually implemented as a FIR filter with fewer taps than the training filter. This second filter tracks changes in the feedback path on the ith sub-band caused by the user's jaw movement or the movement of an object close to the user's ear.

An air filtering soft face mask has a soft body formed of multiple layers of material, including at least one layer of air filtering material capable of filtering selected contaminants from air. The body has an arcuate or peaked nose engaging edge adapted to engage a nose of a wearer and terminating in remote ends that extend downwardly. The body has a chin underlying edge adapted to underlie a chin of a wearer and terminating in remote ends that extend upwardly. The remote ends of the chin underlying edge being secured to the remote ends of the nose engaging edge to form side edges. Jaw movement tensions the body, forcing the nose engaging edge into firmer engagement with the nose of the wearer, forcing the chin underlying edge into firmer engagement with the chin of the wearer and tensioning the side edges into firmer engagement with the cheeks of the wearer.

A locking grip extraction tool has plier handles with jaws having sharp beveled edges for moving in a direction so that an axis perpendicular to the plane of movement is oriented at an acute angle to the handles; the axis intersecting the plane of jaw movement at a point midway between the jaws. A locking link coupled to the handles is adapted to releasably lock the jaws onto an orthopedic implant. A connection rod can be threaded into a hole in one of the handles near the jaws, so that a force applying tool such as a slap hammer can be connected to the rod to apply force to remove the implant. The rod is in alignment with the axis, which alignment makes it easier to remove the implant.

A dental wrench device to loosen and extract teeth, comprising a handle with a fixed tapered jaw. A moveable jaw is also coupled to the handle. The tapered jaw is positioned along the root of a tooth selected to be extracted. The moveable jaw has a blunt contoured shape configured to grasp the gum and bone on the opposite side of the selected tooth at a level below the crown of the tooth. The device is applied and tightened around the selected tooth by turning a thumbscrew, or other jaw movement interface, that moves the moveable jaw end closer to the fixed tapered jaw end until the tooth is tightly gripped by the device. Once the wrench is locked into position, force may then be applied to extract the tooth. The device may also incorporate an optional force feedback gauge to warn the operator when excessive force is being applied.

The invention discloses a device for detecting food mechanical characteristics by simulating human jaw movement circulation. The device comprises a support, a bionic lower jaw, bionic teeth, a bionic upper jaw, a fixed ejector rod, a rotary shaft, a sleeve, a stepping motor and a rotary body. The stepping motor is installed on the top of the support. The movement of an output shaft of the stepping motor is transferred to the rotary shaft, the bionic upper jaw is driven by the rotary shaft to rotate, the sleeve is fixed to the support, the bionic lower jaw is fixedly connected to the sleeve, the rotary shaft penetrates through the bionic lower jaw to be connected with the bionic upper jaw, the bionic teeth are installed on the bionic upper jaw, the fixed ejector rod is fixed to the bionic lower jaw, the rotary body is fixedly connected with the rotary shaft, and the upper end of the rotary body makes contact with the lower end of the fixed ejector rod. The device for detecting the food mechanical characteristics by simulating human jaw movement circulation is ingenuous and simple in structure, low in cost, high in measurement accuracy, capable of meeting food mechanical requirements, and capable of being used for measuring the food mechanical characteristics.

A three-dimensional articulator model having upper and lower base members movable in relation to each other through the action of a hinged articulator joint mechanism, and also having a built-in work stand and label assembly that is adjustable with the articulator mechanism. Each of the arch-shaped base members has a plurality of channels extending therethrough to receive a corresponding dowel pin tray having plurality of outwardly extending dowel pins with grooved end surfaces to facilitate insertion and removal of the pins from the base members. Dental casts are formed upon the dowel pin trays and the movement of the articulator provides for full jaw movement simulation through the design of the articulator joint mechanism. The workstand and label assembly provides a convenient and organized means for working on the model as well as for tracking the information associated with the particular model upon completion thereof, and the model is easily and safely transported in a specially designed carrying cover that protects the model while also providing identifying information in conjunction with the classification panel of the label assembly.

The invention discloses a waste power battery disassembly device and method. The device comprises a clamping jaw movement track arranged on a base, a clamping jaw device is arranged on the upper portion of the clamping jaw movement track and capable of moving along an x-axis and / or y-axis direction, an upper and lower surface cutting device is fixed to the base through a portal frame II, a tail cutting cell removing device is mounted on the base and capable of vertically reciprocating on a z-axis, and a cover plate cutting device is arranged on a portal frame I and capable of reciprocating on an x-axis along the portal frame I. The device is simple in structure, small in size, convenient to use, continuous in disassembly process, high in disassembly speed and efficiency and free from potential safety hazards, and shell recovery and subsequent recovery of cells are facilitated.

A shell (10) for a hearing device, and a method of producing the same. The shell (10) comprises a sub-shell (11) produced by a generative method, and a thermoformed hull (12) covering the subshell (11). The sub-shell (11) comprises lateral openings (13) covered by the thermoformed hull (12) so as to render the shell (10) more flexible in the region of the openings (13), and thereby to relieve pressure exerted by the shell (10) due to dynamic changes in the shape of the wearer's ear canal during jaw movement.

Clamping apparatus for a camera mount includes two clamping jaws slidably coupled to each other so they can move towards or away from each other along a common plane. A rotatable jaw movement controlling mechanism having an eccentric (elliptical or variable contour) shaped inner surface is coupled around a portion of the two clamping jaws for controlling the movement of the two clamping jaws towards or away from each other. A ratcheting mechanism is coupled to the jaw movement controlling mechanism for preventing slippage of the two clamping jaws when the two clamping jaws are moving towards each other. The ratcheting mechanism may include a release button for releasing the ratcheting function and enabling the jaws to move away from each other quickly and without much effort.

The adjustable airway mannequin with visual feedback models the human skull, maxilla, upper teeth, lower teeth, jaw, spine and airway mounted on a backboard. Adjustments can be made to the height of the maxilla, the height of the upper teeth, the tension and distance of the jaw movement representing mouth opening, the anterior-posterior displacement of the jaw relative to the maxilla and skull, the presence or absence of the upper teeth and lower teeth, the range of motion of the spine, and tension on the airway to mimic a variety of anatomies. The mannequin may include one or more electronic proximity and position sensors that operate through magnetic field sensing, accelerometry, and optical sensing to monitor one or more of face length, jaw length, mouth opening, jaw tension, larynx position, head height off the table, and spine mobility.

A dental inlay graft measuring / machining system comprising three-dimensional shape making means for creating shape data on a virtual tooth row including the shapes of a loss part of a tooth and its adjacent tooth and shape data on the opposite occluding surfaces of the opposite teeth opposed to the virtual tooth row, virtual inlay graft fabricating means for making a virtual inlay graft shape from the shape data on the virtual tooth row and the shape data on the opposite occluding surfaces, occlusion adjusting means for virtually combining the shape data on a ready-made inlay graft shape for inlay graft formation similar to the virtual inlay graft shape with the shape data on the virtual inlay graft shape and adjusting the combined data, subjecting the shape data on the virtual tooth row and the shape data on the opposite occluding surfaces to contact, mastication, and adjustment, subjecting the shape data on the opposite occluding surfaces to virtual movement, subjecting the shape data on the virtual tooth row to virtual jaw movement, thereby displaying the state of the jaw movement on a monitor, and determining the most suitable inlay graft shape of the virtual tooth row, and block machining means for machining a block to be machined according to the most suitable inlay graft shape data to make a dental inlay graft.

The invention belongs to the technical field of robots and discloses a chewing force composite test robot. A problem of a single function caused by a failure of transverse chewing movement in the prior art is solved. The robot comprises a static platform. An upper jaw movement platform and a mandibular movement platform are up-down correspondingly arranged on the static platform. The upper jaw movement platform comprises an upper jaw installation platform wherein an upper jaw tooth model is installed. A ball pair connection pushing force rod is hinged to an upper end ball of the upper jaw installation platform. One end of the ball pair connection pushing force rod is hinged to the upper jaw installation platform. The other end of the ball pair connection pushing force rod is connected witha universal joint of the upper end of the static platform. Two shaft connection pushing force rods are arranged on the upper jaw installation platform. One end of each shaft connection pushing forcerod is connected with the upper jaw installation platform. The other end of each shaft connection pushing force rod is hinged to a pushing rod installation sleeve on the static platform. The pushing rod installation sleeve sleeves a rotation shaft of the lower end of the static platform.

A device for controlling an intelligent artificial limb based on eye and lower jaw electromyographic signals comprises an eye or lower jaw surface electromyographic signal acquisition module, an electromyographic signal processing module, an eye or lower jaw movement feature extraction module, a feature matching module, and an artificial limb control module. The eye or lower jaw surface electromyographic signal acquisition module is connected with the electromyographic signal processing module, the electromyographic signal processing module is connected with the eye or lower jaw movement feature extraction module, the eye or lower jaw movement feature extraction module is connected with the feature matching module, and the feature matching module is connected with the artificial limb control module. The movement range is big, signal acquisition is easy, and the precision is high. A low-complexity artificial limb is driven to complete an advanced task based on a detailed electromyographic signal analysis result. The relationship between signals and different modes is searched through a variety of methods to make the signals become a reliable signal source of artificial limbs. Accurate control on artificial limbs can be better realized, and the needs of people can be satisfied better.

A dental articulator includes an articulator frame. The articulator frame has an upper member adapted to hold an upper mounting plate. The upper mounting plate holds an upper dental cast. An elongate lower member of the frame holds a lower mounting plate. The lower mounting plate holds a lower dental cast. The upper member is pivotally connected to the lower member so as to define an anatomically accurate hinge axis to simulate human jaw movement. The dental articulator can be used to form dental prostheses.

The invention relates to a trousers flattening machine comprising a stretching device for stretching a trouser waist, wherein said stretching device comprises a drive device and at least two lateral jaws capable of passing through The drive means moves, characterized in that said side jaws are each attached to a frame which is pivotally rotatable about the jaw's distal point of rotation to move said side jaws.

An air filtering soft face mask has a soft body formed of multiple layers of material, including at least one layer of air filtering material capable of filtering selected contaminants from air. The body has an arcuate or peaked nose engaging edge adapted to engage a nose of a wearer and terminating in remote ends that extend downwardly. The body has a chin underlying edge adapted to underlie a chin of a wearer and terminating in remote ends that extend upwardly. The remote ends of the chin underlying edge being secured to the remote ends of the nose engaging edge to form side edges. Jaw movement tensions the body, forcing the nose engaging edge into firmer engagement with the nose of the wearer, forcing the chin underlying edge into firmer engagement with the chin of the wearer and tensioning the side edges into firmer engagement with the cheeks of the wearer.