53 results about "Osteogenesis distraction" patented technology

An osteogenesis distraction device for securement to separate bone segments in the body of a patient and operative to generate new bone between said bone segments by the gradual application of a distraction force, the device comprising attachment members securable to separate bone segments and moveable in relation to each other to generate a distraction force, a power source for powering relative movement of the attachment members, and wherein the entire device, including the attachment members and power source, is dimensioned for implantation entirely subdermally in the body of a patient.

The present invention provides an improved orthopedic system for the modification of the distance between the maxilla and zygoma. In a preferred embodiment, the system includes proximal and distal footplates attached to an orthopedic device. The distal footplate is attached to the zygoma, with the proximal footplate being mechanically coupled to the maxilla. This mechanical coupling is achieved either through attachment directly to the maxilla or by attachment to a construct which is then wired to the patient's teeth. The orthopedic device, which may be a distractor, allows for modification of the distance between the maxilla and zygoma. The entire system can advantageously be placed intra-orally within a patient. In a preferred embodiment, the footplates are also detachable from the orthopedic device and are composed of a bioresorbable material, such that they will be absorbed by the patient's body. Methods for using this novel orthopedic system are also disclosed.

A periosteal distraction osteogenesis method and apparatus uses a sheet member for covering a surface of living bone that is, in turn, covered by soft tissue. The sheet member is under the soft tissue and over an area where bone growth outwardly and normally to the bone surface is desired. An attractor member adapted to magnetically attract the sheet member for exerting a pulling force on the sheet member in a direction outwardly and normally of the bone surface, is secured at an outwardly spaced location from the sheet member for causing growth of bone outwardly and normally to the bone surface.

Methods and devices for distraction osteogenesis are disclosed employing an energy storage device and a controlled release of energy to provide a separating force. For example, bone expansion devices can include a first anchor element attachable to a first segment of bone, a second anchor element attachable to a second segment of bone, and an actuator for applying a separating force between the first and second anchor elements. The actuator can include a potential energy storage device and a controller for releasing energy from the energy storage device to provide the separating force.

A bone distraction device applies guided incremental forces to opposing bone segments for the purpose of generating native bone in an osteotomy site (distraction osteogenesis). The bone distraction device automatically adjusts the rate of the distraction utilizing feedback received from the ultrasound transducer and other sensors, using an adaptive decision algorithm(s). A wireless transmitter allows for remote guidance, feedback and monitoring.

Devices and methods for gradual displacing of the soft tissues covering bones. The gap developing between the bone and the displaced soft tissue will be filled with bone callus as it is in distraction osteogenesis. The devices and methods allow formation of bone in distraction osteogenesis without cutting a segment of the bone. The devices and methods are particularly useful in dental implantology for vertical ridge augmentation by displacing the periosteal tissue and for sinus lift by displacing the Schneiderian membrane. The devices and methods can also regenerate soft tissue between the bone and the displaced soft tissue.

A periosteal distraction osteogenesis method and apparatus uses a sheet member for covering a surface of living bone that is, in turn, covered by soft periosteal tissue. The sheet member is under the soft tissue and over an area where bone growth outwardly and normally from the bone surface is desired. The method and apparatus requires distracting the sheet member away from the portion of the bone surface at which bone growth is desired, for causing growth of the bone outwardly and normally from the bone surface.

A device and method for performing distraction osteogenesis. The distraction osteogenesis device, in accordance with the present invention, is modular in construction, and has at least two bioabsorbable footplates having screw or rivet holes therein and an extendable member therebetween. The extendable member is used to change the distance between the footplates. When performing the distraction osteogenesis procedure, the footplates are affixed to the bone on either side of an osteotomy / fracture by means of bioabsorbable screws or rivet bone fasteners. The footplates are connected to one another by the extendable member which spans the osteotomy site and stabilizes the bone segments comprising the osteotomy / fracture. Following implantation of the distractor, the extendable member is periodically elongated to incrementally separate the segments of the bone affixed to the respective footplates. Osteogenesis within the osteotomy site is sustained as the juxtaposed ends of the bone segments incrementally separate. When the bone attains a desired length and / or curvature, further elongation of the distractor is discontinued and the newly formed bone is permitted to harden. The extendable member is disconnected from the footplates and surgically explanted. The bioabsorbable footplates and the bioabsorbable screws or rivets affixing the footplates to the bone are not disturbed during explantation of the extendable member and are absorbed by the body over time. The bioabsorbable footplates may be adapted for use with a variety of extendable members.

A combination dental implant / prosthetic support and distractor for facilitating distraction osteogenesis comprises a basically cylindrical shaft having a set of threads on the outside surface and a smooth, distal tip which bears against the bone of the jaw of the patient. Rotation of the device in the mouth of the patient, after a suitable surgical cut is made, causes the adjacent tissue to move or ride up the screw threads to create space between the cut jaw segment and the balance of the jaw tissue. This space is then filled in by distraction osteogenesis. The implant / distractor is left in-situ, after the distraction is finished, for securement thereto of a dental prosthetic, either a bridge or crown. In an embodiment of the invention, a flat disc is placed in the blind bore drilled into the jaw such that the distal tip of the shaft of the combined implant / distractor, will bear against it. A protective cap and / or collar can be provided, suitable shaped, to protect the shaft / gum line from bacterial attack. Also, the shaft may be provided with an internal passageway and one or more radially extending branches. Growth-enhancing material can be passed through the passageway and branches to promote bone development and recovery. In another embodiment, a coronal member is provided, extra-osseously, to facilitate the distraction osteogenesis process. In one version of the device, fluting is provided to the exterior surface of the shaft so that bone growth is enhanced at that intersection. Also, the shaft can be provided with a flat disc at its head to reduce rocking of the device in the mouth.

An externally mounted fixation device for craniomaxillofacial distraction osteogenesis, the device having a helmet to secure the device in a relatively rigid and immobile manner to the head of a patient, support structure to receive distraction components in fixed or adjustable spatial location relative to the patient's head, and distraction components to apply traction to the bones of the patient to be distracted.

The present invention relates to compositions and methods for use in osteodistraction procedures. In one embodiment, a method of stimulating osteogenesis during and / or following bone distraction comprises providing a composition comprising a PDGF solution disposed in a biocompatible matrix and applying the composition to at least one site of bone distraction.

This invention comprises an orthodontic dental distractor for rapid orthodontic tooth movement, particularly into a fresh extraction socket. The rapid movement can occur from the effect of distraction osteogenesis.The device can include four components: a molar tooth band with buccal tube, a canine tooth band with buccal tube, a threaded screw, and a screw retaining clip. The threaded screw is engaged internally to the molar band tube which is threaded internally. The screw head bears externally on the anterior (mesial) end of the clip, and the clip bears externally on the canine band tube so that when the screw is turned the canine tooth moves distally toward the molar tooth. Thus the movement of a tooth can be controlled to proceed at a rapid and prescribed rate.

A combination dental implant / prosthetic support and distractor for facilitating distraction osteogenesis comprises a basically cylindrical shaft having a set of threads on the outside surface and a smooth, distal tip which bears against the bone of the jaw of the patient. Rotation of the device in the mouth of the patient, after a suitable surgical cut is made, causes the adjacent tissue to move or ride up the screw threads to create space between the cut jaw segment and the balance of the jaw tissue. This space is then filled in by distraction osteogenesis. The implant / distractor is left in-situ, after the distraction is finished, for securement thereto of a dental prosthetic, either a bridge or crown. In an embodiment of the invention, a flat disc is placed in the blind bore drilled into the jaw such that the distal tip of the shaft of the combined implant / distractor, will bear against it. A protective cap and / or collar can be provided, suitable shaped, to protect the shaft / gum line from bacterial attack. Also, the shaft may be provided with an internal passageway and one or more radially extending branches. Growth-enhancing material can be passed through the passageway and branches to promote bone development and recovery. In another embodiment, a coronal member is provided, extra-osseously, to facilitate the distraction osteogenesis process. In one version of the device, fluting is provided to the exterior surface of the shaft so that bone growth is enhanced at that intersection. Also, the shaft can be provided with a flat disc at its head to reduce rocking of the device in the mouth.

A distraction device that allows for an improved use of the existing process of distraction osteogenesis. The distraction device facilitates the displacement of a healthy portion of bone to a deficient area to enable bone and soft tissue growth in a fracture gap and allows for both vertical and angular bone regeneration.

The invention relates to a medical distraction osteogenesis device, in particular a built-in arc-shaped distraction osteogenesis device which has the key technology that both ends of an internal cylindrical guide path bent in an arc way are fixedly provided with a left fixed wing and a right fixed wing; a movable wing fixedly connected with a roller at the leftmost end is matched with and connected with the internal cylindrical guide path in a slide way between the left fixed wing and the right fixed wing along the preset arc of the internal cylindrical guide path; and the internal cylindricalguide path is filled with a plurality of rollers closely matched and connected with the internal cylindrical guide path in a slide way. In a distraction osteogenesis operation, the invention can carry out distraction osteogenesis along any directions, enhances the efficiency of the operation, relieves pains of patients and reduces the cost of the operation.

The invention relates to a distraction device and a distraction device system, the distraction device is used for implementing distraction osteogenesis, and the distraction device comprises a shell comprising an accommodating cavity; a rotating shaft extending along the axial direction of the shell and rotatably accommodated in the accommodating cavity; a moving part comprising a first end and a second end which are opposite to each other, wherein the first end is contained in the containing cavity and arranged on the rotating shaft in a sleeving mode, and the second end is located outside theshell and used for being connected with human bones or tissue; and a magnetic rotor arranged on the rotating shaft and used for driving the rotating shaft to rotate around the central axis of the rotating shaft under the action of a first external magnetic field, so that the moving part moves relative to the shell along the axial direction of the shell. The distraction device can be integrally implanted into the body of a patient, the influence on the daily life of the patient is reduced, and the possibility of infection and falling is reduced.

The invention relates to a built-in arc distraction osteogenesis apparatus, which comprises a cobalt-chromium crown, wherein the cobalt-chromium crown sleeves teeth at two sides; an arc-shaped guide rail is arranged at the cheek side of the cobalt-chromium crown; the bending degree of the arc-shaped guide rail is consistent with the physiological bending degree of the teeth; an anchor device is arranged on the cobalt-chromium crown, and the arc-shaped guide rail is fixed to the cobalt-chromium crown via the anchor device; a distraction osteogenesis device is additionally arranged on the arc-shaped guide rail; the distraction osteogenesis device comprises a traction device main body, a threaded rod and a guide rod; the traction device main body comprises two fixed supporting rods which arearranged in a parallel mode; one end of each of the two fixed supporting rods is inserted into the arc-shaped guide rail; through holes, from which the threaded rod and the guide rod can run through,are additionally arranged in the fixed supporting rods; the threaded rod and the guide rod are arranged in a mode of being perpendicular to the fixed supporting rods; and the threaded rod is arrangedbetween the arc-shaped guide rail and the guide rod. The built-in arc distraction osteogenesis apparatus provided by the invention is simple in structure; jawbone can undergo arc traction, so that anideal jawbone form can be recovered; and in addition, the built-in arc distraction osteogenesis apparatus is stable in traction force applying mode and good in controllability.

The invention discloses a pelvic traction approximator, which comprises a left connection rod, a right connection rod, an adjustor component, two traction approximator arm components and two pressurizing bone plate components. The two pressurizing bone plate components are connected to top positions of the left connection rod and the right connection rod respectively. Two ends of the adjustor component are connected to middles of the left connection rod and the right connection rod respectively. The two traction approximator arm components are connected to bottom positions of the left connection rod and the right connection rod respectively. An adjustor is used for adjusting a distance of an inner screw rod screwed into the inner wall of a sleeve. The pelvic traction approximator has advantages that by inner and outer fixing devices, pelvic traction is performed according to a distraction osteogenesis technique without osteotomy, occlusion of separated pubic symphysis of patients suffering from ectopocystis is realized, surgical risks are reduced, postsurgical effects similar to those of an osteotomy mode are achieved, and the treatment effective rate is increased; in addition, postsurgical abnormal gaits of patients are prevented, and approximately normal walking and urination of the patients after surgeries can be realized.

A mandibular distractor device is configured for attachment to opposing sides of a mandible, e.g., a rabbit's mandible, for performing distraction osteogenesis. The distractor device includes a distractor body and an activation bar that extends through the distractor body. The activation bar can be disposed within the body such that a threaded portion of the bar is threaded to an interior wall of the anterior plate, while a smooth portion of the bar extends within the posterior plate. Once the distractor is secured to the mandible, the activation bar can be rotated incrementally to incrementally disengage the threaded portion of the activation bar from the threaded interior wall of the anterior plate. Rotation of the activation bar in this manner incrementally moves the anterior plate anteriorly within the rabbit's mouth, while the posterior plate remains in position.

The present invention provides a method for accelerating bone growth in a subject having a bone condition, selected from the group consisting of a fracture by external force, pathological fracture, fatigue fracture, distraction osteogenesis, osteotomy, osseointegration and combinations thereof, the method employing the administration of a composition containing stable amorphous calcium carbonate, comprising at least one stabilizer. Further provided are the orally-administrable pharmaceutical compositions for use in accelerating bone growth in said bone conditions.

The invention provides a method of enhancing the healing of bone fractures in an animal subjected to distraction osteogenesis, the method comprising administering, to the animal in need thereof, a growth hormone or a growth hormone secretagogue in an amount sufficient to provide bone formation simultaneous with the distraction procedure. The invention further provides a method for treatment of patients suffering from fractured bones by distractive osteogenesis, which method comprises administering an effective amount of a growth hormone or a growth hormone secretagogue to a patient in need of such a treatment in conjunction with the distraction procedure, as well the use of a growth hormone or a growth hormone secretagogue for the manufacture of a medicament for the enhancement of healing of bone fractures in distractive osteogenesis,

The invention discloses an animal femoral surgery positioning and fixing device. The animal femoral surgery positioning and fixing device comprises a femoral positioning and fixing table, wherein thefemoral positioning and fixing table is provided with bone holding forceps for clamping an animal femoral shaft, a femoral positioning and fixing panel for fixing the neck of the bone holding forceps,and a fixing bin for fixing a handle of the bone holding forceps; and the femoral positioning and fixing table is used for limiting and fixing the surgical standard position of an animal femur in a femoral surgery, so that a surgical operation platform for a three-dimensional standard image of the femoral surgery is formed. By the animal femoral surgery positioning and fixing device, standardization of a femoral external fixation surgery for implementing experimental models such as femoral fracture, segmental bone defect and distraction osteogenesis can be guaranteed, so that a femoral modelsurgery technology has repeatability and data reliability. The animal femoral surgery positioning and fixing device is assisted by a three-dimensional digital fixing frame as an external fixing frame,and is linked with a synchronous laser marking navigation unit, so that a required large-environment suitable body position for the surgery is provided for a surgical operator, accurate positioning is realized, and meanwhile, a required basic environment is provided for a surgical robot operating system.

Transport distraction apparatus for performing transport distraction osteogenesis is provided which includes a track capable of being formed into a curvilinear shape with a carriage movable longitudinally along the track. The carriage has a fixation plate secured or securable to it and at least one gear for moving the carriage along the track in order to adjust its position relative to the length of the track. The track has a series of formations extending along one edge of the track and engaged by the gear which is at least partially accommodated within a space between a plane including the front face of the track and a plane including the rear face of the track. Preferably, the apparatus creates a gap between a central region of the track and a patient's bone in use. A fixation plate is also provided.

The present invention relates to the field of devices and methods for distraction osteogenesis, and, more particularly, to distraction devices and distraction systems used in the treatment of mandibular or maxillary alveolar ridge atrophy, and to methods for utilizing a distraction device or a distraction system for bone tensioning.

A miniature built-in automatic continuous sutural distraction osteogenesis device comprises a main anchorage rod and a distracter; the main anchorage rod is a slender titanium alloy rod, the front part of which is provided with a distracter hole and the tail of which is provided with at least two fixing holes; the distracter is made of an iron-nickel memory alloy wire, the preset shape is a W, the restored shape is a U, both ends are bent, and one of the ends is mounted in the distracter hole; and an auxiliary anchorage rod is arranged on one side of the main anchorage rod, so that a triangular support is formed. The device is individually designed by the three-dimensional CT computer-assisted design technology, can be fabricated in a simple way, and accords with the low-carbon economy, the operation of the surgery is convenient, the distraction process is smooth, and the distraction effect is accurate; the distraction process is simple and convenient, the surgery is minimally invasive and simple, the length of stay is short, the frequency of further consultation is less, the expense is less, and the device is highly compatible with the tissues of the human body, can be safely and reliably fixed, cannot fall apart due to external force, cannot affect the normal study, life, outing and the like of a diseased child, can be worn for a long time, and has a remarkable treatment effect.

The invention relates to a dental implant technology, in particular to an intra-bone distraction osteogenesis device and method applied to a dental implant. The intra-bone distraction osteogenesis device applied to the dental implant comprises a traction component, an implantation component, a central rod and an expansion component, wherein through holes allowing the central rod to penetrate through are formed in axes of the traction component and the implantation component, the central rod penetrates through the through holes, the head end penetrates to the outer side of the traction component, the tail end is detachably connected with the expansion component through the implantation component, and the traction component is connected with the head end of the central rod to push the central rod to move along the central holes. With the adoption of the intra-bone distraction osteogenesis device and method applied to the dental implant, force is applied by the central rod, expansion is performed by the expansion component, so that the alveolar bone is expanded and heightened, operation is convenient, mechanical damage to the alveolar bone is avoided, and osteogenesis of the alveolar bone can be promoted.

The invention discloses a maxillary built-in sagittal distraction osteogenesis device. The maxillary built-in sagittal distraction osteogenesis device comprises at least four belt rings, two screw anchorages and corresponding screw anchorage location holes, two expansion screws, two transpalatal arches, and four connecting rods; the four belt rings are bonded on the teeth on the two sides of the maxillary horizontal osteotomy line of a patient; the two screw anchorages are arranged on the two sides respectively between each pair of the root of a maxillary canine and the root of a correspondingdentes premolares; the two screw anchorage location holes are arranged on the two sides respectively between each pair of the root of a maxillary canine and the root of a corresponding dentes premolares; the other end of each screw anchorage is connected with a corresponding belt ring; the transpalatal arches are used for connecting the belt rings on the left and the right; the expansion screws are connected with the belt rings through the connecting rods. The maxillary built-in sagittal distraction osteogenesis device is capable of solving a problem in the prior art that the counter-acting force of a conventional tooth-borne type maxillary built-in sagittal distraction osteogenesis device on anchorage teeth is large, mixed supporting mode is adopted, teeth and maxilla are taken as anchorages, distraction force is transferred onto maxilla through the belt rings and the screw anchorages fixedly arranged on teeth, the counter-acting force on teeth is reduced, and distraction osteogenesis amount is increased effectively, so that effective curative of maxillary sagittal deficiency is realized, and operation is convenient.