651 results about "Orthopaedic department" patented technology

Polymer-bioceramic structures are described for use in the repair of bone defects. The composites of the present disclosure are characterized by a polymer disposed in a porous bioceramic matrix. Processes for preparing the composites of the present invention by compression molding are described, including compression molding to induce orientation of the polymer is multiple directions. The composites of the present invention are also useful as drug delivery vehicles to facilitate the repair of bone defects.

A method for gaining access to and removing mechanical fasteners such as pedicle screws. A small arthroscopic incision is made over the location of the fastener. A guide wire is then placed into the incision and attached to the fastener. A series of progressively enlarging dilator tubes are slipped into the incision to progressively enlarge its diameter. A screw extractor tube is placed into the incision, over the largest dilator tube. The screw extractor tube is advanced until its lower extreme surrounds the head of the fastener. The dilator tubes are then removed. At this point, the screw extractor tube holds open the incision and provides access to the fastener through its hollow interior. A specially designed extractor tool is inserted into the screw extractor tube. An arthroscope is preferably also inserted through the screw extractor tube so that the surgeon can visualize the process. Jaws on the end of the extractor tool are clamped to the fastener's head. The extractor tool is then rotated to back out the fastener. Once the fastener is freed from its installed position, the extractor tool withdraws it through the screw extractor tube. Other conventional processes—such as debridement—may then be performed through the screw extractor tube. Finally, the surgeon withdraws the screw extractor tube and closes the small incision.

A bone plating apparatus includes a handle having extending therefrom a tissue expander for insertion through a skin incision and through the subcutaneous tissue surrounding a fractured bone. A bone plate may be secured to the handle during advancement of the tissue expander so as to deliver the bone plate to a desired location proximate to the fractured bone. Both the tissue expander and the bone plate may be advanced to the desired location proximate to the fractured bone under the visualization of an endoscope. A screw alignment jig is secured to the handle and has a guide hole which aligns with an access hole of the tissue expander. The alignment of the guide hole and the access hole allow for percutaneous screw insertion into the delivered bone plate. A method for plating a fractured bone is also disclosed.

A multi-layer, fiber-reinforced composite orthopaedic fixation device having a design selected based on a desired characteristic of the orthopaedic fixation device. The design may be selected according to a model of the device, the model defining design constraints, and the design may comprise a pattern of the fiber angle for each layer. The selection of a design may be analyzed using finite element analysis to determine whether the design will comprise the desired characteristic.

Surgical anchoring systems and methods are employed for the correction of bone deformities. The anchoring system and its associated instrument may be suitable for surgical repair of hallux valgus, tarsometatarsal sprains, ankle ligament reconstruction, spring ligament repair, knee ligament reinforcement, acromioclavicular sprains, coracoclavicular sprains, elbow ligament repair, wrist and hand ligamentous stabilization or similar conditions. The anchoring system may include a fixation system for anchoring two or more sections of bone or other body parts and a system for aligning of one section relative to another section.

The invention relates to porous ceramic composites incorporating biodegradable polymers for use as a bone substitute in the fields of orthopaedics and dentistry or as a scaffold for tissue engineering applications. The porous ceramic composite implant for connective tissue replacement comprises a porous ceramic matrix having a biodegradable polymer provided on internal and external surfaces of the ceramic matrix. The biodegradable polymer allows for the passage and / or delivery of a variety of agents throughout the porous ceramic matrix and improves mechanical properties of the implant in vivo.

Artificial implants having reduced area to provide reduced wear are provided. The reduced area is particularly located at areas where greatest wear is exhibited. In a particular embodiment of a mobile bearing knee implant, the area is reduced on the mobile bearing insert underside, where it contacts a tibial component. The reduced area may be any shape of indentations, for example, grooves, dimples, straight patterns, curved patterns, crossing patterns, holes, channels or slots. The indentations may be various sizes, and have been found to be particularly effective if covering about 10% to about 20% of the insert at depths between about 1-2 mm.

A prosthesis (20) for use in performing joint arthroplasty is provided. The prosthesis (20) is to be fitted to a long bone (3). The prosthesis includes a first body (22) having a first body articulating surface (24) defining a generally circular outer periphery (26) of the first body articulating surface (24). The first body (22) has a support surface (28) opposed to the articulating surface (24). The support surface (28) is adapted to receive the head of the long bone (3). The prosthesis (20) also includes a second body (30) operably associated with the first body (22). The second body (30) has a second body articulating surface (32) extending from a portion of the circular outer periphery (26) of the first body articulating surface (24).

Systems and methods are provided for navigated placement of bone engaging elements, such as support pins used to support a cutting block on a bone for resection. In one embodiment, a guide apparatus is configured to be mounted to a bone and provides multi-degree of freedom gross and fine adjustments of a pin guide. The pin guide carries a position tracking element so that its real-time spatial position relative to a location on the bone can be evaluated.

The invention discloses a method for manufacturing a navigation template of human bone surgery and a female die thereof. The method comprises the following steps of: a, acquiring raw data of a patient bone, and establishing a three-dimensional model on a computer; b, analyzing the three-dimensional model, extracting a bone curve image near a surgical screw inlet part, and designing a screw positioning rod; c, establishing a reverse template fitted with a bone curve near the surgical screw inlet part to make the screw positioning rod matched with the reverse template through reverse engineering software, establishing a three-dimensional model of the female die of the surgical navigation template, and manufacturing a physical model of the female die; and d, pouring biomedical materials into the physical model of the female die to make the bottom three-dimensional shape of the biomedical material model fitted and consistent with the bone curve near the surgical screw inlet part, and hardening to form the biocompatible navigation template of human bone surgery. The biocompatible navigation template of the human bone surgery manufactured by the invention makes the surgery safer and achieves better effect.

Orthopaedic device (10, 110, 210, 310) for correcting deformities of a long bone (11), comprising a bar (12), extended along an axis (Y-Y) and intended to be placed alongside the bone (11), at least a first clamp (14, 214, 314) for a first group of osseous screws (16) and a second clamp (18, 19, 118) for a second group of osseous screws (20, 22), removably mounted on said bar (12), wherein the first of said clamps (14, 214, 314) is placed onboard a support base (21, 221, 321) in turn mounted on said bar (12), and angularly movable in relation to the support base around a given rotation axis (X-X, X′-X′, Z-Z) by means of a rotary coupling, characterised in that said rotary coupling comprises a male element (35; 235, 236, 237, 238, 239; 333, 334) associated with the first clamp (14, 214, 314) and having a surface at least partially cylindrical, and a corresponding female element (36; 130; 250, 254, 255; 336, 337) associated with the support base (21, 221, 321) and having a surface at least partially cylindrical constituting a seat for the loose coupling of the male element (35; 235, 236, 237, 238, 239; 333, 334).

The invention discloses a three-dimensional guiding method for use in an orthopaedic operation and a guider thereof. In the invention, an acceleration sensor and a magnetic field sensor are fixedly arranged on an operating instrument, wherein the acceleration sensor acquires gravity acceleration components corresponding to the axes of the operating instrument, and the magnetic field sensor acquires the magnetic field components corresponding to the axes of the operating instrument; the acquired gravity acceleration components and magnetic field components are converted into azimuth angle and sagittal saw angle information which is to be displayed in real time; and real-time three-dimensional orientation guiding is performed according to the displayed azimuth angle and sagittal saw angle information. The guider can be used to help medical care personnel to determine the sizes of azimuth angles and sagittal saw angles in clinic so as to avoid various human errors. Meanwhile, the guider has a small volume and therefore is convenient to carry; and when the guider is used, the medical care personnel can acquire real-time position accurate information, so that the successful rate of an operation can be increased.

A robot-guided system to assist orthopaedic surgeons in performing orthopaedic surgical procedures on pre-positioned inserts, including for the fixation of bone fractures, and especially for use in long bone distal intramedullary locking procedures. The system provides a mechanical guide for drilling the holes for distal screws in intramedullary nailing surgery. The drill guide is automatically positioned by the robot relative to the distal locking nail holes, using data derived from only a small number of X-ray fluoroscopic images. The system allows the performance of the locking procedure without trial and error, thus enabling the procedure to be successfully performed by less experienced surgeons, reduces exposure of patient and operating room personnel to radiation, shortens the intra-operative time, and thus reduces post-operative complications.

An orthopaedic prosthetic inserter used for the implantation of double mobility cup implants is described. The inserter consists of a drive train, a C-shaped housing, and a prosthetic cup engaging subassembly. The subassembly comprises an impaction plate, a grasping plate and a domed nose. When activated by the drive train, a plurality of hook ends extending from the grasping plate latch onto the cup of the prosthetic to hold and manipulate the prosthetic cup during implantation.

A trial implant kit includes a plurality of intermediate components and a plurality of inner components. Each of the plurality of intermediate components has a uniform inner surface, although at least two of the plurality of intermediate components having distinct outer surfaces. Each of the distinct outer surfaces is configured to engage one of a plurality of acetabular shell component geometries. Each of the plurality of inner components has a uniform outer surface portion and a bearing surface, the uniform outer surface portion configured to be received by the uniform inner surface of any of plurality of intermediate components. The bearing surface is configured to engage a femoral head. At least two of plurality of inner components having distinct bearing surface configurations.

The invention discloses a high-strength, high-plasticity and corrosion-resistant titanium alloy, a preparation method thereof and an application thereof. The invention belongs to the field of titanium alloy technology. According to the titanium alloy, a certain mass fraction proportion of copper (2.6-4.9%) is added into titanium, then the copper and the titanium are mixed and smelted, and after a series of heat treatment processes, dispersed titanium copper phase is precipitated on the basal body of the titanium alloy, so that an anti-microbial objective can be achieved. Moreover, the mechanical property, the corrosion property and the bio-compatibility of the titanium alloy can be improved significantly and the titanium alloy can be widely used for various kinds of titanium alloy medical instruments in the field of medical clinic such as the orthopaedics department, the stomatology department and like.

The invention provides an intelligent orthopaedic system which comprises an intelligent robot, a controller and an operating rod. The intelligent robot comprises a movable base, a seven-degree-of-freedom mechanical arm and a robot end effector. A movable device is arranged at the bottom of the movable base. The number of degree of freedom of the robot operating rod is half of that of the robot end effector. The operating rod is positioned at the wrist of the intelligent robot and connected with the robot controller to transmit manual operating signals of an operator. The controller is positioned in a base of the intelligent robot and connected with the intelligent robot and the operating rod to realize control on the intelligent robot. The intelligent robot is placed besides an operating table so as to assist surgeons in operating on patients.

An orthopedic prosthetic inserter used for the implantation of an acetabular prosthetic cup implant. The inserter consists of a drive train, a C-shaped housing, and a collet mechanism used to attach a prosthetic cup implant. When activated by the drive train, the collet mechanism expands to draw the prosthesis towards the collet mechanism and create a substantially friction tight engagement therebetween.

The invention relates to a degradable magnesium alloy implanting material for bone fixation and a preparing method of the degradable magnesium alloy implanting material. The implanting material is prepared from, by mass percent, 0.5-4% of Mg, 0.5-4% of Ag and the balance Y. The preparing method of the implanting material comprises the steps of ingot casting metallurgy, extruding, rolling and heat treatment. The prepared implanting material meets the requirement of plates, rods and profiles, wherein the plates, the rods and the profiles serve in biological fluid environments. By means of alloy materials, the good comprehensive mechanical performance needed by bone fixing materials is ensured, the beneficial effects of being capable of inhibiting bacteria, resistant to corrosion, free of cytotoxicity, good in biological mechanical property and the like are achieved, and the alloy materials can be degraded under the biological fluid environments. The implanting material can serve as bone nails or marrow nails or bone fraction plates or other various devices to be used under the medical conditions, and the comprehensive performance is good; and especially, the implanting material has both the biomechanical property and the biodegradable performance at the same time, and the typical defect of existing metal materials of a titanium alloy or stainless steel or high polymer materials in application of the department of orthopaedics is overcome.

An orthopedic magnetic resonance imaging system is disclosed. This system includes a source of magnetic resonance imaging data sets resulting from successive magnetic resonance imaging acquisitions from a diseased joint of a patient. A segmentation module segments surfaces in the joint based on information contained within at least one of the data sets, and a registration module spatially registers, in three dimensions, information represented by a first of the data sets with respect to information represented by one or more further data sets for the same patient. A comparison module detects differences between information represented by the data sets caused by progression of the disease in the joint of the patient between acquisitions. A cross-patient comparison module can compare detected differences for the patient with detected differences for at least one other patient.

A bone depth gauge having a distal handle to which a tip is releasably connected. The tip is formed by photochemical machining to produce a tip and hook on the distal end with an approximate hexagonal cross section. The manufacturing costs of the tip are low enough to provide it in a one use package. A tubular element is releasably telescoped over the tip and handle to enable determination of the depth of a hole formed in a bone.

The present invention relates generally to an antibacterial coating which is composed of silver, to medical tools and to implants comprising such a coating and to a method as well to an apparatus for the production of such a coating. The medical tools or the dental or orthopaedic implant comprises a metal or metal alloy having a treated surface wherein the treated surface is at least partially converted to an oxide film by plasma electrolytic oxidation using a colloid-dispersed system and wherein the converted surface is partially covered by islands formed by colloid-dispersed silver-particles of the colloid-dispersed system. An Ag—TiO2 coating shows excellent properties in terms of antibacterial efficacy (even against multi-resistant strains), adhesion and biocompatibility. The life-time of an implant in a human body is increased. The antibacterial coating can be used in the field of traumatology, orthopaedic, osteosynthesis and / or endoprothesis, especially where high infection risk exists.

The invention relates to the technical field of medical instruments, in particular to a smoothly started leg rehabilitation training instrument for an orthopaedic patient, which can enable the patientto perform stretching rehabilitation training on leg ligaments and tendons. The leg rehabilitation training instrument comprises an inclined opening and closing semicircular disc, opening and closingassisting armrests, leg up-and-down swing lining plates, a damping matching base, an inclined supporting sliding bottom frame, inclined driving assisting armrests and a locking lying training bed, apatient lies on the locking lying training bed firstly, then two legs are fixed to the two leg up-and-down swing lining plates, and then up-and-down swing training of the two legs is conducted; ligaments and tendons behind the legs of the patient can be trained when the legs are lifted, and the two opening and closing assisting armrests can be driven to slide at the front end and the rear end of the inclined opening and closing semicircular disc by swinging the lining plate up and down through the two legs of the patient, so that the patient can perform opening and closing training on the legs; ligaments and tendons on the inner sides of the legs of the patient are subjected to stretching rehabilitation training.

The invention provides a real-time visual navigation system in orthopaedic minimally invasive surgery based on virtual-real fusion. The real-time visual navigation system based on virtual-real fusioncomprises an NDIPolaris optical tracking device, a virtual-real fusion device and a navigation device, wherein the NDIPolaris optical tracking device is used for acquiring six-degree-of-freedom pose information of a mark point in a real three-dimensional space; an optical tracking equipment bracket used for supporting optical tracking equipment (NDIPolaris) so that the optical tracking equipment is placed at a pointing position at any angle; a depth camera used for acquiring video data and video depth information in normal and lateral directions in an operation; a display used for displaying the poses of the tracked surgical instrument in the front side video, the side video and the three-dimensional virtual model in real time so as to realize visualization of the minimally invasive surgery; a video equipment bracket used for supporting the depth camera and the display equipment and fixing the depth camera and the display equipment at specified positions; and a video navigation calculation device is used for processing data acquired by the optical tracking equipment and the depth camera, calculating video navigation data and sending the video navigation data to the display.

The invention relates to the technology of biological material in the field of biomedical engineering, specifically a preparation technology for bioactive bone-repairing cement material, which is suitable for medical application in the fields of orthopaedics department, thoracic surgery department and reconstructive surgery, such as artificial joint fixation, bone defect filling and implant restoration. The invention relates to a new material which is a combination of powder and liquid with bioactivity for bone repairing and is characterized in that the combination comprises a powder component including homopolymerization powder of methyl methacrylate or copolymerization powder of methyl methacrylate, and a sosoloid powder doped with strontium hydroxyapatite capable of being hardened and solidified to form solid substance with a certain mechanical intensity and synostosis activity when mixed with the liquid component. The main component of the liquid includes methyl methacrylate monomer, which can form bioactive bone-repairing cement when mixed with the powder component. Compared with the prior art, the material can further increase osteoconduction and osteoconduction activity of the combination, and accelerate healing of bone defect part; thus, the material is suitable for orthopaedics department and craniomaxillofacial plastic repair.

The invention discloses an intellectualized orthopaedics implant for reconstruction after centrum excision. The intellectualized orthopaedics implant comprises an outer sleeve and an inner sleeve, wherein the outer sleeve is provided with an opening in one end, and an end surface at the other end, and the inner sleeve is provided with an opening in one end, and an end surface at the other end; theopening end of the outer sleeve is mounted at the opening end of the inner sleeve in a sleeving manner; the outer sleeve is in clearance fit with the inner sleeve; a stress sensor is arranged in a gap between the outer sleeve and the inner sleeve; a stress sensor and a displacement sensor are arranged at a supporting component between the opening end of the inner sleeve and the outer sleeve; anda gravity sensor is arranged on the inner wall of the outer sleeve or the inner sleeve; a plurality of through holes are formed in the side wall of the outer sleeve and / or the inner sleeve, communicate with an inner cavity of the outer sleeve and / or the inner sleeve, and are formed in the periphery of the outer sleeve and / or the inner sleeve. According to the intellectualized orthopaedics implantdisclosed by the invention, under the situation that X-ray examination and CT examination are not performed, whether a patient is subjected to bone fusion or not can be accurately judged, the precision rate for judging bone fusion is increased, and the own position, the stress situation and the like of the orthopaedics implant after transplanting can be recorded and fed back.

This invention relates to a new type of apparatus designed to modulate the neurovegetative system and integrate the neurovegetative action with that of the central nervous system. The method is not invasive, because it uses pulses transmitted through the skin; the intensity of the stimulus is controlled directly by the patient in order to achieve better integration with the central nervous system. This invention effectively treats vascular disorders resulting from obstruction of the arteries of the legs, heart and brain because it induces vasodilatation and increases blood flow and the production of new blood vessels. The method also improves lesions of the spinal column, especially those affecting the back and neck, and other orthopaedic disorders.

The invention relates to platelet-rich plasma freeze-dried powder and a preparation method and application thereof, in particular to a method for extracting platelet-rich plasma from blood and preparing the free-dried powder of the platelet rich plasma. The method includes the steps of (a), placing whole blood into a container with anticoagulation agents, and evenly mixing the blood with the anticoagulation agents; (b), placing the blood in a centrifugal tube, and performing primary centrifugation to separate the blood into three layers; (c), extracting the upper layer and most of the middle layer, transferring the extracted blood into a new centrifugal tube, evenly mixing, and performing secondary centrifugation; (d), discarding the upper plasma of the centrifugal tube, enabling sedimentary blood platelets to be re-suspended by using the residual plasma to obtain the platelet-rich plasma; (e), adding freeze-drying excipients into the platelet-rich plasma, and freeze-drying the platelet-rich plasma to obtain the platelet-rich plasma freeze-dried powder. The plateletrich plasma freeze-dried powder is applicable to the fields such as the orthopaedics department, the stomatology department, dentofacial surgery, sport medicine and cosmetic medicine. The freeze-dried powder comprises the freeze-drying excipients and has an excellent technical effect.

The invention discloses an orthopaedic navigation and positioning system and method, and the system comprises a mechanical arm which is provided with an actuator and a tracer at the tail end; a precision verification device which is used for cooperating with the C-arm machine and the optical tracker to verify and optimize the navigation precision of the system; an optical tracker which is used for collecting the position of the tracer on each device and obtaining the position information of the corresponding device; a C-arm machine which is used for scanning to generate a preoperative 3D image and registering the preoperative 3D image with the intraoperative 2D perspective image; and an upper computer which is used for planning a path according to the preoperative 3D image, controlling the mechanical arm to move to a target position after the preoperative 3D image is registered with the intraoperative 2D perspective image, and carrying out an operation. By means of precise positioning, the operation precision of a person and a mechanical arm can be maximized, wounds of a patient are reduced, meanwhile, the operation process can be accelerated, and radiation borne by doctors and the patient is reduced.