16 results about "Osteogenesis distraction" patented technology

The invention relates to the technical field of oral and maxillofacial surgery, and discloses an arc-shaped retractor for maxillofacial bone defect repair, which comprises a defective bone fixing assembly, the defective bone fixing assembly comprises two first titanium plates, the outer surfaces of the first titanium plates are integrally connected with first convex columns internally provided with screw holes, one ends of the first convex columns are connected with support plates through first medical screws, and the other ends of the first convex columns are connected with second convex columns through second medical screws; a plurality of rotating holes are formed in the outer surface of the support plate at equal intervals, rotating pins are rotationally connected into three of the rotating holes, and second medical screws are connected into the rotating pins in a threaded mode. The first titanium plate provides a reliable anchoring foundation for traction by means of biocompatibility and mechanical strength of titanium alloy, and the first convex column provides a supporting point for the traction assembly; a steel wire caulking groove and a limiting stop block ensure that the traction wire is stable and safe, and traction force is uniformly transmitted; the whole structure achieves accurate and controllable arc-shaped distraction osteogenesis, and the repair speed of the defective maxillofacial bone is increased.

The invention belongs to the technical field of medical instruments, and particularly relates to a multidirectional distraction osteogenesis correction system, in the multidirectional distraction osteogenesis correction system, the distance between a first fixing sleeve and a second fixing sleeve in supporting assemblies can be adjusted through a second traction assembly, and the distance between the two sets of supporting assemblies can be adjusted through a first traction assembly; the bilateral tooth-bone metastasis plate can be adjusted in the two-dimensional moving direction and the moving amount, the bilateral tooth-bone metastasis plate is allowed to move asymmetrically, transverse and sagittal differential distraction osteogenesis is achieved, and the bilateral tooth-bone metastasis plate is particularly suitable for cleft lip and palate patients with maxillary sagittal and transverse development insufficiency. According to the multidirectional distraction osteogenesis correction system, bilateral asymmetric distraction osteogenesis can be achieved, unilateral / bilateral alveolar process fractures of the front section of the maxillary dental arch are narrowed, the success rate of an alveolar process fracture bone grafting operation is increased, the alveolar bone mass of the middle section of the maxillary dental arch is increased, dentition congestion is relieved, space is provided for repair treatment, and the difficulty of subsequent treatment such as orthognathic surgery is reduced.

The application discloses a design method of an integrated titanium plate assembly for assisting midfacial suture distraction external support traction, comprising the following steps: scanning a target object by a medical scanning device to obtain a three-dimensional model of the internal structure and tissue of the target object, wherein the three-dimensional model at least comprises independently displayable bone structure and dental tissue; performing bone analysis on the bone structure of the target object based on the three-dimensional model to obtain the weak point of the bone structure; obtaining the tooth root position of the dental tissue of the target object based on the three-dimensional model; selecting the shape and size of an integrated titanium plate assembly model based on the bone analysis result, and determining the fixed hole position of the integrated titanium plate assembly model based on the tooth root position; and generating an integrated titanium plate assembly three-dimensional model based on the shape, size and fixed hole position of the integrated titanium plate assembly model. According to the individual differences of patients, the integrated titanium plate assembly for assisting midfacial suture distraction external support traction is designed to be more suitable for patients, and the postoperative traction effect is improved.

The utility model discloses a kind of fixators used in cooperation with distraction osteogenesis device, including clamp and fixed sleeve;Clamp: its left and right sides are provided with connecting mechanism, the connecting mechanism includes fixed plate, flexible strip, connecting plate and annular buckle, the left and right sides of clamp are provided with fixed plate, the lower end of fixed plate is fixedly connected with flexible strip, the lower end of flexible strip is fixedly connected with connecting plate, the middle part of opposite inner side of two connecting plates is equipped with annular buckle;Fixed sleeve: its outer camber surface is equipped with side wing, the inside of fixed sleeve is provided with hexagon hole, fixed sleeve is respectively clamped in the inside of annular buckle, the connecting mechanism further includes spring piece and connecting seat, the opposite inner side of two connecting plates is equipped with spring piece, which is symmetrically distributed up and down, the fixator used in cooperation with distraction osteogenesis device, distraction osteogenesis device is fixed by hexagon hole, avoid distraction osteogenesis device and occur rotation due to being acted on.

The utility model relates to a jawbone tractor, which comprises a traction tube which is provided with a guide groove and is provided with a front end and a rear end; the fixed traction plate is fixed relative to the traction tube; the movable traction seat is restrained in the guide groove and can axially slide, and a threaded through hole which axially penetrates through the movable traction seat is formed in the movable traction seat; the movable traction plate is fixed on the movable traction seat; the traction screw rod is arranged in the guide groove and can rotate around the axis of the traction screw rod, the front end of the traction screw rod penetrates out of the traction pipe to form a driving end, the universal joint is used for being connected with the stress application rod, and the traction screw rod penetrates through and is in threaded connection with the interior of a threaded through hole in the movable traction seat; the traction device is characterized in that the fixed traction plate is arranged close to the front end of the traction tube, and the movable traction plate is located behind the fixed traction plate. The distraction direction of the retractor is not limited by the space of the oral vestibule, so that the traction difficulty caused by the conflict of the traction directions is effectively avoided, and the predictability and the accuracy of the distraction osteogenesis process are improved.

Systems and methods for improved cranio-maxillo-facial distraction are provided. The disclosed subject matter can include a distraction device adapted for subcutaneous implantation in a patient, and a handheld device operationally coupled to the distraction device. The distraction device can include a distraction element, adapted to attach to opposing bony fragments of a bone and perform distraction osteogenesis on the bone, and a rotatable magnetic element, coupled to the distraction element such that rotation of the magnetic element controls the distraction element. The handheld device can include a magnetic element, operationally coupled to and magnetically aligned with the magnetic element of the distraction device, such that rotation of the magnetic element of the handheld device causes corresponding rotation of the magnetic element of the distraction device. The disclosed subject matter also provides techniques for implanting a distraction device to opposing bony fragments of a bone and using such a device.

The application discloses a positioning traction device for maxillofacial distraction osteogenesis, which comprises a distraction osteogenesis device corresponding to maxillofacial soft tissue and an osteotomy guide plate corresponding to teeth; one end of the distraction osteogenesis device corresponds to maxillofacial soft tissue, and the other end of the distraction osteogenesis device corresponds to maxillofacial osteotomy soft tissue, so as to position the relative position between the maxillofacial soft tissue and the maxillofacial osteotomy soft tissue; the osteotomy guide plate comprises a connecting part which is detachably connected with the distraction osteogenesis device, so as to position the spatial position of the distraction osteogenesis device. The application has the beneficial effect that in the device, the relative position between the maxillofacial soft tissue and the maxillofacial osteotomy soft tissue is fixed by the distraction osteogenesis device, and the spatial position of the distraction osteogenesis device is positioned by the connecting part of the osteotomy guide plate, so as to determine the relative position between the maxillofacial soft tissue and the maxillofacial osteotomy soft tissue, and the distraction osteogenesis operation can be finely controlled during the operation, so as to achieve the safe, fast, accurate and stable distraction osteogenesis operation purpose.

The present invention pertains to devices and methods for distraction osteogenesis, with a particular focus on distraction devices and systems used to treat mandibular or maxillary alveolar ridge atrophy. It also includes methods for using these devices or systems for bone tensioning.

The utility model provides a head frame with an improved adjusting assembly for a suturing traction osteogenesis. The head frame comprises a fixing frame, fixing plates are arranged on the two sides of the fixing frame, fixing rods are arranged at one ends of the fixing plates, fixing sleeves are arranged on the two sides of the fixing frame, the fixing rods are clamped in the fixing sleeves, and the fixing plates are connected with the fixing frame in a sliding mode. A plurality of sets of fastening screw holes are formed in the fixing plate, the fastening screws are arranged in the fastening screw holes in a penetrating mode, a sliding rod is arranged on the fixing frame, and a traction assembly is arranged below the fixing frame and arranged on the sliding rod in a sleeving mode. The fixing plates on the head frame are matched with the fixing sleeves on the fixing frame through the fixing rods, the distance between the two fixing plates can be adjusted, and therefore the fixing size of the fixing head frame can be adjusted according to the skull of a patient, it is ensured that the head frame can be perfectly attached to the skull of the patient, and the stable and reliable fixing effect is achieved. Meanwhile, the traction assembly can move up and down along the sliding rod and can be adjusted according to the actual condition of the patient, so that the optimal traction effect is achieved.

Distraction device known as an implant distractor device for distracting atrophied bone and simultaneously placing a dental implant. • The implant-distractor device is characterized by its ability to be manufactured from any biocompatible material. The implant-distractor device consists of: a) a deflectable implant: • The distractible implant is characterized by a mechanical or electronic locking system to prevent its movement after the desired distraction. • The distractible implant is characterized by sacred spaces to allow the upper part to rest in the lower part prior to distraction. • The deflectable implant is characterized by the fact that both an upper and a lower part can be provided with or without a thread to enable osseointegration. • The deflectable implant is characterized by its ability to be deflected or telescoped as needed. • The deflectable implant features different thread designs on its surface so that it can be deflected or telescoped as needed. • The deflectable implant is characterized by different thread designs on the surface to improve osseointegration, increase the surface area of ​​the implant bone or improve soft tissue healing. • The deflectable implant is characterized by its ability to support a temporary or permanent restoration to replace the missing teeth. • A device with a surface treatment to improve osseointegration or to increase the implant-bone surface area. b) a distraction activator with titanium wings: • The distraction activator is characterized by a stabilizing arm for fixation of the distracted implant. • The titanium wings of the distraction activator are characterized by triangular or circular slots to allow the placement of screws of different sizes. • The distraction activator is characterized by the fact that the stabilizing arm can be extended horizontally in order to adjust the distance between the distraction activator and the deflectable dental implant. • The distraction activator is characterized by the fact that the stabilizing arm can have several rings that are attached to several deflectable dental implants and enable distraction at the same time. • The distraction activator is unique in that it can be used to stabilize dental implants that are mobile due to peri-implantitis. The distracted implant can be stabilized while distraction osteogenesis of the surrounding bone or guided bone regeneration is performed. • The distraction activator is characterized by including a device to prevent activation of the device during the healing phase.

This invention presents a modular, osseointegrated prosthesis for restoring finger and thumb functionality after amputation. The prosthesis includes single-joint and dual-joint components, designed for the thumb's MCP joint and the PIP and DIP joints of other fingers. It integrates with the residual bone through intramedullary fixation, enabling seamless movement and restoring up to 180 degrees of extension in the MCP joint and precise motion in the PIP and DIP joints. Made from biocompatible materials like titanium with a hydroxyapatite coating, the prosthesis features mechanisms for optimal tendon movement and joint stabilization. It also incorporates distraction osteogenesis to lengthen the bone before implantation, ensuring functional and aesthetic outcomes. This solution offers significant advancements over current prosthetic technologies by combining functional restoration and aesthetic appeal, making it suitable for all finger amputations and enhancing the ability to regain full hand function with long-term stability and comfort.

This application provides a chip-based remote-controlled distraction osteogenesis system, comprising a first fixation device, a second fixation device, a first distraction device, and a second distraction device. Furthermore, the system includes a control device for adjusting the spacing between the first and second distraction devices, and a computer system for remotely controlling the operating state of the control device. By combining the first and second distraction devices with the computer system, this application enables precise and uniform remote adjustment of the distraction osteogenesis device, thereby overcoming the shortcomings of conventional distraction osteogenesis devices, which require manual adjustment and have the distractor handle exposed to the skin.

The present invention discloses an intelligent automatic precise minimally invasive distraction osteogenesis system, which includes an adjusting rod. A fixing mechanism is sleeved on the adjusting rod. The fixing mechanism includes an adjusting block sleeved on the adjusting rod. Two moving rods penetrate through the side wall of the adjusting block. Clamping plates are arranged at both ends of the adjusting block. The left and right ends of the two moving rods respectively pass through the two clamping plates and extend to the outside thereof. A moving mechanism is sleeved on the adjusting rod. The moving mechanism is electrically connected to an external signal source. A rotating mechanism is connected to the side wall of the moving mechanism. A regulating mechanism is connected to the side wall of the rotating mechanism. The present invention can help the staff firmly fix the device on the patient's head, and at the same time, it can also be adapted to different patients. Moreover, the device also facilitates the staff to start the servo motor to adjust the traction force of the traction spring through relevant data, which facilitates the work of the staff and indirectly improves the work efficiency of the staff.

The utility model relates to the technical field of rat distraction osteogenesis, in particular to a rat miniature single-side fixing frame which comprises a fixing seat, a sliding groove is formed in the upper surface of the fixing seat, a lead screw is rotationally connected to the interior of the fixing seat in a penetrating mode, and an adjusting and fixing mechanism is connected to the fixing seat in a sliding mode. According to the miniature single-side fixing frame for the rat, the sliding groove is formed in the upper surface of the fixing base, the top of the sliding block slidably connected in the sliding groove is connected with the sliding bottom clamping block and the top clamping block through bolts, and meanwhile, a kirschner wire is clamped and fixed between the sliding bottom clamping block and the top clamping block, so that the lower limb bone of the rat can be conveniently punctured and fixed; a lead screw rotationally connected in the sliding groove is connected with the damping ring, and a rotating head is further arranged at the outer end of the lead screw so that the positions of the sliding bottom clamping block, the top clamping block and the kirschner wire can be adjusted when the lead screw is rotated, and then the stretching gap can be adjusted according to the lower limb bone of the rat.

Disclosed herein is an alternative method and device to traditional alveolar distraction osteogenesis, which typically necessitates bone destruction. This method employs a titanium rod with a screw head design connected to two peripheral protrusions. The lower protrusion anchors the device to the jawbone, while the upper protrusion supports a porous titanium plate beneath the periosteal tissue. By gradually rotating the screw head, the distance between the protrusions increases, promoting controlled, tension-free bone growth without necessitating bone destruction. This approach is advantageous where traditional methods are not feasible, such as bones affected by congenital defects, severe atrophy, or near-exposed nerve canals. The porous titanium plate acts as a scaffold, preventing periosteal tissue collapse and maintaining space for bone regeneration, while preserving the integrity of the periosteum. This innovation offers a more effective and less invasive solution for complex alveolar bone deficiencies.

1. The name of the design product: animal stretching device (special for distraction osteogenesis). 2. The use of the design product: used for installing on the bone cutting site of the lower jaw, femur and other bones of animals such as mice, rats, rabbits, etc., aligning and fixing the two bone cutting ends, and promoting large-scale new bone formation through periodic stretching. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective drawing.