174 results about "Mandible maxilla" patented technology

A system for mandibular reconstruction generally includes an elongated locking plate having a plurality of internally threaded apertures and a plurality of fasteners. Each fastener includes a main body portion having an upper threaded shaft and a lower threaded shaft. The lower threaded shaft is adapted to engage the mandible. Each fastener further includes a removable head portion internally threaded for engaging the upper shaft portion and externally threaded for engaging a selected one of the internally threaded apertures of the locking plate. In the preferred embodiment, the thread leads of the head portion and lower shaft of the main body portion are identical. A method of mandibular osteosynthesis utilizes the system of osteosynthesis and generally comprises the steps of temporarily securing the elongated locking plate to the mandible with at least one fastener by engaging the threads of the lower portion with the mandible and threadably engaging the head with the locking plate, unthreading the head portion from the main body of the fastener to thereby allow displacement of the locking plate from the mandible without removing the fasteners from the mandible, performing a surgical procedure (e.g., removal of a cancerous growth), and re-securing the elongated plate to the fastener with the removable head portion.

A system for mandibular reconstruction generally includes an elongated locking plate having a plurality of internally threaded apertures and a plurality of fasteners. Each fastener includes a main body portion having an upper threaded shaft and a lower threaded shaft. The lower threaded shaft is adapted to engage the mandible. Each fastener further includes a removable head portion internally threaded for engaging the upper shaft portion and externally threaded for engaging a selected one of the internally threaded apertures of the locking plate. In the preferred embodiment, the thread leads of the head portion and lower shaft of the main body portion are identical. A method of mandibular osteosynthesis utilizes the system of osteosynthesis and generally comprises the steps of temporarily securing the elongated locking plate to the mandible with at least one fastener by engaging the threads of the lower portion with the mandible and threadably engaging the head with the locking plate, unthreading the head portion from the main body of the fastener to thereby allow displacement of the locking plate from the mandible without removing the fasteners from the mandible, performing a surgical procedure (e.g., removal of a cancerous growth), and re-securing the elongated plate to the fastener with the removable head portion.

When there is an obstruction to the passage of air through the back of the mouth and nose, the soft palate and the bell collide, producing a vibration called snoring. There are various ways of reducing or eliminating snoring, nasal masks introducing air pressure to the throat (CPAP), surgery of the throat (OPPBA) and devices that are introduced into the mouth to cause a mandibular advancement what increases the oropharyngeal area, improving ventilation, among other solutions. The present invention disclosure an intraocclusal removable device in the form of a “U” that is placed covering all of the upper jaw teeth, wherein two steps, one in each extreme of the lower part of the element, which impede the mandible be closed completely on its normal occlusion, forcing it to produce a forward displacement of the lower jaw.

An apparatus for osteosynthesis of a mandible. An elongated plate has a plurality of apertures. The plate has a first portion, a second portion, and a central portion intermediate the first and second portions. Each of the apertures within the first portion and within the second portion are disposed in relatively close spaced relationship, and each of the apertures within the central portion are disposed in relatively widely spaced relationship. The width of the plate between apertures is less in the central portion than in the first portion. The plate is more easily bent within the central portion than within the first portion, and can be bent to a relatively small radius in the central portion without distorting the apertures within the central portion. The central portion is sized and located to overlie the symphysis of the mandible.

Mandibular advancement device (1; 20) and a device preparation method and kit, comprising a mouthpiece (2) and at least one plastic strap (5; 21) with two ends (7) fitted with a slot (9) that is connected articulately to a respective cylindrical portion (11) of a lateral protrusion (10) of the mouthpiece (2). The slot (9) is closed and is longer in length than the diameter of the cylindrical portion (11), which can move along the slot (9). The strap (5; 21) acts by traction between the cylindrical portions (11) of the mouthpiece (2) to prevent the free return of the lower portion (4) with respect to the upper portion (3) of the mouthpiece (2) and therefore treats apnea, whilst allowing some advancement and lateral movement of the lower portion (4), making it comfortable for the user.

The invention relates to a modular mandibular prosthesis for use after the resection of a patient's mandible. The modular mandibular prosthesis includes a pair of anchor plates and at least one connector member. Each anchor plate has first and second ends. The second end of each anchor plate is adapted to be attached to a portion of the patient's mandible. At least one connector member is disposed between the pair of anchor plates. Each connector member includes first and second ends. The first end of a connector member is connected to the first end of an anchor plate thereby defining a connection. The second end of a connector member is connected to the first end of the other anchor plate. Additional connector members may be disposed between the anchor plates wherein the first end of the additional connector member is attached to the second end of an adjacent connector member thereby defining a connection and the second end of the additional connector member is connected to the first end of an adjacent connector member thereby defining a connection. Each connection defines a swivel coupling which permits three dimensional movement at each connection thereby facilitating orientation and installation of the modular mandibular prosthesis.

A cover screw for a dental implant seals a threaded hole of an implant fixture formed in a mandible or maxilla. The cover screw is formed of a main body and a membrane fixing screw, and is attached to the implant fixture until the implant fixture is thoroughly connected to the mandible or maxilla in an implantation hole. The main body includes a first male screw to be screwed into the threaded hole of the implant fixture, an outer face formed on a side opposite to the male screw and facing an oral cavity, and a threaded hole formed on a side of the outer face. The threaded hole has a diameter smaller than that of the male screw and extends parallel to the male screw. The membrane fixing screw has a head, and a second male screw to be screwed in the threaded hole. A barrier membrane is properly held between the main body and the head.

The invention relates to the fields of computer-aided technology and maxillofacial plastic medical apparatus and instruments, in particular to an optimal design and manufacturing method for a jaw defect individual restoration. The optimal design and manufacturing method is characterized by comprising the following steps: conducting CBCT scanning on the maxillofacial part of a patient, obtaining DICOM data, guiding the data into three-dimensional modeling software-MIMICS (Materialise, Belgium) to reconstruct a jaw three-dimensional model, designing the individual restoration, designing models of a plurality of virtual screw according to the size of retention screws supposed to be adopted, then moving the models to the appropriate positions of the jaw to simulate the situation to the screw retention restoration, obtaining Von Mises stress and a strain nephogram, and manufacturing entities of various materials through the fast forming technology. The jaw defect individual restoration made through the manufacturing method for the jaw defect individual restoration has good performance in biomechanical properties including breaking strength, stress-strain distribution, the service life and the like. So far, a patient with upper and lower jaw defects accepting an implanting operation is observed for two years, and no bad complications of fracture, exposure and the like happen.

Disclosed herein are mandibular advancement devices comprising an upper splint and a lower splint, where the upper splint comprises one or more upper fins, where each upper fin is located at a distance UD from back of the upper splint; the lower splints comprise one or more lower fins, where each lower fin is located at a distance LD from back of the lower splint; where the position of the upper and lower fins is unchangeable. Also disclosed are methods of reducing partial constriction of airway during sleep for a patient, the method comprising identifying a patient in need thereof; and administering to the patient the disclosed mandibular advancement device. Also disclosed are methods of manufacturing a mandibular advancement device, the method comprising obtaining measurements from a patient's dentition; digitally designing a mandibular advancement device; and milling the mandibular advancement device.

An intra-oral device comprising an upper splint (7100), a lower splint (7200) and a pair of lateral connecting rods (7300). Each connecting rod has a first rod end (7310) that connects to the lower splint and a second rod end (7320) that connects to the upper splint. The connecting rods (7300) are configured to maintain the mandible in an advanced position relative to the maxilla. The upper splint (7100) includes at least one upper gutter portion (7110) that retains the upper splint on the maxilla. The lower splint (7200) includes at least one lower gutter portion (7210) that retains the lower splint on the mandible. The thickness of the at least one upper gutter portion and/or the at least one lower gutter portion may vary across the profile of the teeth.

The invention relates to a two-part mandibular protrusion splint (1) for preventing snoring and/or obstructive sleep apnoea, comprising a lower part (2) and an upper part (3), comprising shaping and flexurally rigid trays (2a, 3a) which are open towards the mandibula and maxilla respectively, where the bottom surfaces of the outsides of the two trays (2a, 3a) are connected to one another in such a way that they are continuously adjustable relative to one another in the longitudinal direction, and a corresponding ready-to-use set for the production or restoration of mandibular protrusion splints consisting of (i) shaping and flexurally rigid trays (2a, 3a) with preformed attachment elements on the outsides of each of the bottom surfaces; (ii) one or more adjustment screws (10) for connecting the attachment elements; and (iii) optionally use instructions.

Eyeglasses with additional temple arm supports for supporting the frame of a pair of eyeglasses off of and above the nose and nasal bone. The glasses are used by patients recovering from rhinoplasty surgery but who must still have use of eyeglasses which do not contact the nasal bone or nose. In one embodiment, the frame is suspended above the nose by an enhanced counterweighed ear loop. In another embodiment, a stanchion is provided supported by the zygomatic arch to elevate the temple arm. Several embodiments support the temple arm with additional mandibular and temple rests extending orthogonally from the temple. Several additional embodiments replace the conventional ear loop with a pair of support pads at the end of a shortened temple arm. The support pads press against the two bony protuberances on the side of the wearer's head. These protuberances include the zygomatic arch, the mandibular condyle, and the temple. Pressure by the support pads against two of these protuberances provides sufficient support for the entire weight of the eyeglasses. Another embodiment is comprised of a support hoop disposed on the temple arm. The upper arc of the hoop is supported by the temple while the lower arc is supported by the mandible.

A mandibular advancement device is proposed which comprises both an upper and a lower base plate, whereby engagement of the plates during closing of the jaws causes protrusion of the mandible and allows relative lateral movement between the jaws. In one particular form the invention relates to a device for positioning upper and lower jaws, including a cam associated with one of the jaws and a follower associated with the other jaw, the follower having an engagement surface which translates across the cam to advance one of the jaws relative to the other as the jaws are closed.

In accordance with one embodiment of the present invention, an osteodistraction device includes a flexible rod having a threaded portion. A distraction arm that includes a rod guide is coupled to the threaded portion of the flexible rod through a threaded hole near one end of the distraction arm. The rod guide of the distraction arm is operable to slide through a pivoting guide that is coupled to the distraction arm. An adjustment screw is coupled to the pivoting guide and is operable to rotate the distraction arm from a first to a second orientation. The flexible rod is operable to change the position of the rod guide relative to the pivoting guide.

A jaw advancer connects to the skull, maxilla jaw, and the jawbone, mandibular jaw, without contacting the teeth of a patient. Each advancer, of a pair, has a hollow upper member with a head to admit a screw into the maxilla and an opposite threaded end, a socket having a threaded end that admits the upper member and an opposite smooth bore, and a lower member with a head to admit a screw into the mandible and an opposite smooth end that fits into the smooth bore. The lower member has a coaxial spring that provides an expansive force to the lower jaw and that cushions the socket. The lower member slides within the hollow portion of the upper member when the patient moves the advancer. The head of the upper member attaches proximate the molars of the maxilla to advance the mandible and attaches proximate to the incisors of the maxilla to retract the mandible. Alternatively, the lower member has a slight curve to separate it from the teeth.

A guide for administering an injection including a guide body contoured for a human mandible; and at least one needle indexing guide on the guide body for the insertion of a needle there through, the guide use to provide a predictable and repeatable way of administering an injection to block a nerve.

The present invention discloses a safe surgical mouth gag (MG) comprising a substantially planar frame larger than the maximal mouth aperture which is defined by at least two cross members, i.e., a longitudinal maxillary cross member and a mandibular cross member and by at least one rod connecting said maxillary and said mandibular cross members; and modules maneuverably interconnected to the same. Said modules are selected from a tongue blade approximately perpendicular to said frames' plane, which is vertically displaceable with respect to said mandibular cross member; a retaining member within which said tongue blade shaft is slidably displaceable; retraction elements for urging the cheeks away from the oral cavity; abutment members for contacting the upper teeth or upper maxilla; and at least one light auxiliary located adjacent to oral cavity, adapted to illuminate the same effectively.

The invention discloses a system for capturing and visualizing mandibular three-dimensional motion. The system comprises a mandibular motion tracking device for designing and printing through a three-dimensional CT (Computed Tomography) model, at least two infrared cameras, and a host computer for analyzing shooting record data, wherein the mandibular motion tracking device comprises a rear end fixing device, a medium connecting rod, and three marking rods, wherein the three marking rods are arranged at the front end and are not co-planar; one end of each of the marking rods is connected to the medium connecting rod and while the other end of each of the marking rods is provided with a marker; the rear end fixing device is used for designing and printing through the three-dimensional CT model according to the external physical characteristics of lower teeth; the markers expose from the mouth and move together with the mandible; the host computer is used for recovering the overall motion of the mandible of a tested subject so as to determine whether the mandible motion and occlusal contacts are normal. The invention also provides a method for capturing and visualizing the mandibular three-dimensional motion. According to the technical scheme, the system and method have the advantages of low cost, high testing accuracy and the like, and is convenient to operate.