35 results about "Bone contact" patented technology

The invention relates to an artificial periosteum suitable for a complex bone surface. The artificial periosteum is an integrated single-layer membrane. The artificial periosteum is provided with an anti-adhesion area, a directional pore channel structure area and a bone contact area which are sequentially distributed in the thickness direction. The directional pore channels are sequentially filled with composite hydrogel for filling bone surface pores and promoting bone repair and bonding gel for bonding bone surfaces in the extending direction of the directional pore channels; an expanding agent and prestretching memory polymer fibers are dispersed in a matrix of the artificial periosteum; the expanding agent is enriched in the matrix of the directional pore channel structure area and the bone contact area and is used for driving the composite hydrogel to leave the directional pore channel so as to seal bone surface gaps or cracks; and the pre-stretched memory polymer fibers are enriched in the matrix of the anti-adhesion area and are used for limiting the expansion direction of the expanding agent. The artificial periosteum can solve the technical problems that in the prior art, the attaching effect of the artificial periosteum on the complex bone surface is poor, and the long-term reliability is poor.

In some embodiments, a bone implant for percutaneous use is provided. The bone implant comprises a head, a body adjacent to the head and a tip opposite the head. At least the head, body or tip is configured to contact bone. An expandable member contacts at least one of the head, tip or body and is movable from an unexpanded configuration to an expanded configuration when deployed at a bone implant site. In some embodiments, a system for percutaneous bone harvesting is provided.

Systems and methods for bone surface geometry generation include a computing device. The computing device projects first geometry data indicative of a first bone contact surface of a first bone of a patient to a coordinate space of a second bone of the patient to generate a projected geometry. The second bone includes a second bone contact surface engaged with the first bone contact surface. The computing device also maps the projected geometry to a plurality of poses within a range of motion of the first bone relative to the second bone using position data indicative of relative positions of the first bone and the second bone at the plurality of poses within the range of motion. The computing device also selects an intersecting geometry from the mapped projected geometries to generate second geometry data indicative of a second bone contact surface.

An ultrasonically vibrating surgical tool for removing cement (7) in artificial joint revision surgery has an ultrasonic vibration source operationally coupled to a working tip (5) that acts on the cement (7) in the lumen (8) of a bone such as a femur (1). When acting on the cement (7), the tool vibrates at substantially a single resonant frequency. If the working tip (5) comes into contact with a hard material such as the bone wall (6) of the femur (1), additional supplemental vibrations are generated at other frequencies. The tool is equipped with a microphone or other vibration detector to pick up these supplemental vibrations, which may be in the audible or ultrasonic range. If supplemental vibrations are detected at a frequency characteristic of contact between the working tip (5) and bone, the user of the tool is warned and the operation of the tool is interrupted.

A bone fixation device (1) is presented, comprising a wire (7) and a load distributor (9), the load distributor comprising: a contact side (2) having a contact region (11) which is pressed against the bone to be fixed upon tightening of the wire (7), and two opposite lateral sides (4) that are not in contact with the bone upon tightening of the wire (7). At least one of the lateral sides (4) is provided with a plurality of recesses (5) which do not extend into the contact sides (2). The contact side (2) of the load distributor (9) has a continuous smooth surface which is configured to slide across the bone without damaging the bone when the load distributor (9) is pulled longitudinally across the bone during application.

Described herein are cannulated reamer designs and methods. In one embodiment, a reamer comprises a cannulated central body portion, a plurality of cutting legs and outer frame. The cannulated central body portion has an inner wall surface and an opposing outer wall surface defining a thickness and a bone contacting surface and an opposing distal end surface defining a length, the inner wall surface defining a bore about a central longitudinal axis of the cannulated central body portion. The plurality of cutting legs extends outwardly from the cannulated central body portion. The other defines a periphery of the reamer, the outer frame coupled to a lateral end of each of the plurality of cutting legs. The cannulated central body portion has a recess extending entirely through the thickness and only partially though the length.

This utility model discloses a digital dental 3D-printed titanium framework, comprising a pure titanium frame, a support mechanism and an occlusal mechanism on the pure titanium frame, the support mechanism including an upper support rod and a lower support rod, the top of the upper support rod being fixedly connected to a bone contact surface, the bone contact surface having multiple first micropores, multiple embedded protrusions at the outer edge of the bone contact surface, and first positioning markers on the bone contact surface, and multiple triangular support components between the upper and lower support rods, the triangular support components including a first support rod and a second support rod, belonging to the field of medical device technology. This digital dental 3D-printed titanium framework acquires three-dimensional data of the patient's teeth and jaws through an intraoral scanner, uses selective laser melting equipment, and selects medical-grade Ti-6Al-4V ELI alloy powder as the printing material, effectively improving accuracy, shortening the processing cycle, reducing weight, improving osseointegration efficiency, and reducing costs.

Graft for a bone defect, in particular a tibial head graft for a knee-joint endoprosthesis. It comprises a sleeve-like inner body (2) for implantation at one end of a long bone (99). An outer face of the inner body (2) is designed as a bone contact face (20) for bearing on the surrounding bone margin (97). According to the invention, an outer shell piece (3) is provided which, as a bone replacement piece, is doubled onto the outside of the inner body (2) for filling a defect at the cortical bone margin (97) and is not dimensioned peripherally, such that, in the circumferential direction, it covers only a part of the outer circumference of the inner body (2). The doubled outer shell piece (3) forms a filler piece for a bone defect (bone window 96) at the bone end. Closure of the bone window (96) is achieved, and unwanted contact between the graft and surrounding soft-tissue parts is avoided. Moreover, the graft is thus also supported in the region of the bone window (96). Parts of the bone margin (97) that are still present can thus remain intact, allowing the greatest possible preservation of naturally present bone substance.

According to the preparation method of the PEEK-based tantalum coating skull restoration, the tantalum coating is prepared through data modeling, fused deposition modeling 3D printing and magnetron sputtering, the preparation process is simplified, and the production efficiency and the product consistency are improved. Medical-grade PEEK serves as a substrate, a micro-nano structure is formed on the surface through laser pretreatment, an ultrathin tantalum coating (the thickness is smaller than or equal to 1 micrometer) is deposited through magnetron sputtering, the matching degree of the appearance of the prosthesis and the anatomical appearance of a skull defect area reaches + / -1 mm, and the proximity error between the elasticity modulus of a bone contact area and a host bone is smaller than or equal to + / -10%.

This invention relates to the field of veterinary medical device technology, and more particularly to a high-performance orthopedic implant for veterinary use and its preparation method. The method includes: preparing a solid external structure using additive manufacturing technology with a matrix material, and preparing a three-dimensional porous structure for the bone contact area on the solid external structure; preparing a micromaterial layer on the three-dimensional porous structure for the bone contact area using PVD technology, thereby obtaining the high-performance orthopedic implant for veterinary use. The preparation method of this invention combines additive manufacturing with technologies such as spraying, PVD, and laser sintering, employing cold spraying combined with laser sintering to overcome the non-metallurgical bonding defects of pure cold spray coatings, improving bonding strength and implant lifespan. The prepared implant possesses high mechanical strength, precise three-dimensional porosity, suitable elastic modulus, and good biocompatibility and osteoinductive properties. Through the synergistic effect achieved by the microporous structure and multi-material composite, excellent bone ingrowth can still be achieved even in cases of bone cell infarction.

The utility model provides a full-porous spine fusion cage with an extremely-small curved surface structure, and belongs to the technical field of medical instruments. The utility model comprises an extremely small curved surface porous structure which is a three-period spiral curved surface; the bone grafting windows are arranged on the pair of cambered surfaces of the extremely-small-curved-surface full-porous structure and are used in cooperation with bone grafting; and the instrument clamping area is arranged in the middle of the bottom surface of the extremely-small-curved-surface porous structure, is communicated with the bone grafting window and is used for clamping the spinal fusion cage by an instrument. According to the utility model, an extremely small curved surface porous structure formed by a three-period spiral curved surface is adopted, the comprehensive mechanical property is excellent, and the static compression strength and the fatigue strength are improved by more than 50%; the matching degree of the elasticity modulus and the human skeleton is high, the stress load is uniformly distributed, the mechanical reliability is high, and the anti-fatigue capability is strong; no compact solid part exists, so that the contact area with bones and the bone tissue ingrowth space are increased; blood is rapidly sucked into the pore channel through the capillary effect, bone fusion and vascularization are facilitated, and bone conduction, bone fusion and bone ingrowth performance is outstanding.

In some embodiments, a bone implant for percutaneous use is provided. The bone implant comprises a head, a body adjacent to the head and a tip opposite the head. At least the head, body or tip is configured to contact bone. An expandable member contacts at least one of the head, tip or body and is movable from an unexpanded configuration to an expanded configuration when deployed at a bone implant site. In some embodiments, a system for percutaneous bone harvesting is provided.

An interbody implant system for use in the spine includes a base comprising two or more bone contacting surfaces, at least one recess in at least one of the two or more bone contacting surfaces, the recess configured for containing a tooth, a deployable tooth to provide fixation between the base and the anatomy of a subject, a break-away bridge between the tooth and the base for providing a first relative position between the tooth and the base, and a locking mechanism for providing a second relative position between the tooth and the base.

Systems and methods include a component of a bone implant that includes a patient specific bone contacting surface and, optionally, at least one protrusion adjacent to or extending from the patient specific bone contacting surface. The at least one protrusion is configured for engaging a bone preparation in the bone. To prepare the bone for receiving the component, one or more cutting tool templates may be used. The one or more cutting tool templates may be fabricated to have a patient specific bone contacting surface that engages the bone that is to receive the implant component. A cutting tool is engaged in one or more of one or more slots defined by the cutting tool template(s) to remove surface portions of the bone to create the bone preparation for engaging the protrusion. The patient specific bone contacting surface of the component engages the bone.

A metatarsal implant for repairing damage in a metatarsophalangeal joint of a patient and in particular for repairing damage caused by osteofytes or as a result of osteofytes is provided. The metatarsal implant is adapted to be attached to an implant receiving surface at least partly covering a lateral surface of the metatarsal head. A bone contacting surface of the metatarsal implant is designed to correspond to the implant receiving surface, the bone contacting surface thus comprising at least two sub-surfaces in different planes, and at least one junction point where sub-surfaces meet, and a contour curvature of the articulating surface is designed by simulating a healthy articulating surface of the damaged metatarsal head, generated based on a determined surface curvature of the cartilage and / or the bone in a predetermined area at the site of diseased cartilage and / or bone, to mimic the original, undamaged, articulating surface of the metatarsal head.

The invention discloses a hip joint prosthesis system and a preparation method thereof. The hip joint prosthesis system comprises a thighbone assembly, an acetabulum assembly and a soft tissue fixing device. The femoral component comprises a femoral stem and a femoral bulb, the femoral stem comprises a bone contact surface used for being combined with the thighbone of a user and a near-end bearing portion used for being connected with the femoral bulb, the near-end bearing portion extends laterally to form a neck, and the neck is provided with an interface structure. The bone contact surface of the femoral stem and the bone contact surface of the acetabular cup are each provided with a three-dimensional porous structure. The acetabulum assembly comprises an acetabulum lining arranged on the femur ball head in a sleeving mode and an acetabulum cup arranged outside the acetabulum lining in a sleeving mode. The soft tissue fixing device is mounted on the interface structure; the pore characteristic parameters of the three-dimensional porous structure on the femoral stem change in the axial direction of the femoral stem. According to the invention, the limitation that the traditional uniform coating cannot give consideration to the optimal bone ingrowth conditions of different bone regions can be overcome, and uniform and firmer osseointegration of the prosthesis in the body of a patient can be promoted.

A gradient porous structure (200) for one or more bone contacting surfaces of a total ankle replacement implant (100) is provided. The gradient porosity of the porous structure may be optimized to match the natural variation of a patient's bone density, while the pattern (202) of the porous structure may be optimized to maximize mechanical strength so that the implant is structurally stable within the ankle joint.

Graft for a bone defect, in particular a tibial head graft for a knee-joint endoprosthesis. It comprises a sleeve-like inner body (2) for implantation at one end of a long bone (99). An outer face of the inner body (2) is designed as a bone contact face (20) for bearing on the surrounding bone margin (97). According to the invention, an outer shell piece (3) is provided which, as a bone replacement piece, is doubled onto the outside of the inner body (2) for filling a defect at the cortical bone margin (97) and is not dimensioned peripherally, such that, in the circumferential direction, it covers only a part of the outer circumference of the inner body (2). The doubled outer shell piece (3) forms a filler piece for a bone defect (bone window 96) at the bone end. Closure of the bone window (96) is achieved, and unwanted contact between the graft and surrounding soft-tissue parts is avoided. Moreover, the graft is thus also supported in the region of the bone window (96). Parts of the bone margin (97) that are still present can thus remain intact, allowing the greatest possible preservation of naturally present bone substance.

The invention discloses a 3D printing anterior cervical interbody fusion implantation system assisted by an orthopedic robot. The 3D printing anterior cervical interbody fusion implantation system comprises a steel plate body (1) and a fusion cage body (2), the steel plate body (1) is of a spatial curved-plate-shaped structure, and pedicle screw placement holes (1.1) are formed in the steel plate body (1). A coating of graphene or a derivative thereof can be arranged on the surface of the implant. The robot-assisted surgery system comprises a handle (3), a control unit (12), an interaction module (6), a visual detection module (7), a mechanical arm (8), a holder (9) and the like. The device adapts to personalized operations, and is large in bone contact area, good in stability and high in fusion rate. By applying the visual operation system of the orthopedic robot, the accuracy and safety of screw placement of the anterior cervical pedicle screw are improved, the number of times of fluoroscopy in an operation is reduced, the operation process is simplified, and accurate treatment of an orthopedic operation is achieved.

An implant, system, and method used for inserting a tendon repair implant system into a patient's humerus. The implant system includes an implant and at least one staple. The implant includes a body, a first arm extending away from the body on a first end of the implant, and a second arm extending away from the body between the first end and a second end of the implant. The implant may also include a hydrogel coating with a gradient of human growth factors positioned on at least the bone contacting surfaces. The implant is positioned on the proximal humerus and greater tuberosity with the two arms of the implant spaced apart forming a passageway for receiving the rotator cuff tendon.

The utility model discloses an artificial ligamentum flavum complex which comprises an artificial ligament and two fixing seats, and the two ends of the artificial ligament are fixedly connected with the two fixing seats respectively. Screw holes are formed in the two fixing seats, the two fixing seats are fixedly connected with the spine by installing screws into the respective screw holes, and the bone contact surfaces at the bottoms of the two fixing seats are provided with micropore structures. When the artificial ligamentum flavum complex is installed on the spine, the artificial ligamentum flavum complex can replace the cut ligamentum flavum to maintain the mechanical stability of the spine and cover the dura mater to reduce postoperative dura mater scars. Therefore, the artificial ligamentum flavum complex can replace ligamentum flavum removed in the operation, improve the stability of the spine of a patient, reduce postoperative spine instability, protect spinal canal duramater and nerves, reduce scar adhesion and improve the postoperative clinical effect.

This invention claims protection for a novel gradient artificial vertebra and its design method, belonging to the technical field of medical devices. It mainly includes a biomimetic porous structure design method, an axial gradient design method, and a radial gradient design method. First, simulating the in vivo loading conditions of a spinal vertebra, a density gradient design is performed along the axial direction. This reduces the relative density of the bone contact surfaces at both ends to lower the elastic modulus, weaken the stress shielding effect, and promote bone ingrowth. Simultaneously, the relative density of the middle portion is increased to reduce stress concentration and improve specific strength. Then, a radial gradient design is performed, increasing the relative density on the inner side to enhance central mechanical properties. Finally, the gradient designs in both directions are integrated into the final artificial vertebra, resulting in an artificial vertebra with reduced stress concentration, increased specific strength, reduced stress shielding at the bone contact surfaces, promoted bone ingrowth, and enhanced fatigue performance. This method is applicable to most devices requiring reduced stress concentration and enhanced fatigue performance.

A metatarsal implant for repairing damage in a metatarsophalangeal joint of a patient and in particular for repairing damage caused by osteofytes or as a result of osteofytes is provided. The metatarsal implant is adapted to be attached to an implant receiving surface at least partly covering a lateral surface of the metatarsal head. A bone contacting surface of the metatarsal implant is designed to correspond to the implant receiving surface, the bone contacting surface thus comprising at least two sub-surfaces in different planes, and at least one junction point where sub-surfaces meet, and a contour curvature of the articulating surface is designed by simulating a healthy articulating surface of the damaged metatarsal head, generated based on a determined surface curvature of the cartilage and / or the bone in a predetermined area at the site of diseased cartilage and / or bone, to mimic the original, undamaged, articulating surface of the metatarsal head.

The invention relates to the technical field of medical apparatuses and instruments, and discloses a nickel-titanium memory alloy ship-shaped connector which comprises a connecting frame, two annular frames, a connecting rod and a connecting rod. An extension part is arranged on the ring frame, the extension part comprises two extension arms, and the two extension arms are both connected to the inner wall of the ring frame in a sliding mode; a reset part is further arranged on the ring frame and used for manually driving the two extension arms to retract into the ring frame. Through the arrangement of the extension parts, the two extension arms can automatically extend out and form an annular structure with the annular frame after the annular frame is in contact with a bone, so that the stability of fixing the bone is greatly improved, independent installation operation is not needed, the operation time is saved, and by utilizing the characteristics of nickel-titanium memory alloy, the operation efficiency is greatly improved. The annular frame and the extension arms above the annular frame can automatically hold the skeleton tightly after being heated, use of skeleton fixing pieces is reduced, and then damage to the skeleton is reduced.

A method and system for generating a dynamic seating map during joint replacement surgery is disclosed. The method comprises tracking a spatial pose of a surgical tool relative to a patient's anatomy, determining a position of an implant based on the spatial pose of the surgical tool, mapping a prepared bone surface of the patient's anatomy, calculating distances between the implant and the prepared bone surface, and generating a real-time visualization of the distances on a user interface, wherein the visualization comprises a color-coded representation of implant-to-bone contact. The system may include a tracking device, a processor configured to perform the distance calculations, and a display device for presenting the real-time visualization to guide intraoperative implant placement.

The utility model relates to a kind of bone surface liquid suction device, including installation cylinder, be located in the inside of installation cylinder and the liquid suction part of bone surface close, be located on the connecting portion of installation cylinder, connecting portion is equipped with the aspirator that through suction to the liquid suction part is applied negative pressure, aspirator can be inhaled the liquid on bone surface into liquid suction part, the utility model can effectively attract and remove the liquid remaining on contact surface, prevent liquid remaining on bone contact surface, further produce adverse effect to the bonding operation of bone surface, it is favorable to enhance the bonding of bone cement and bone contact surface, avoid the early prosthesis loosening caused by the inadhesive of bone contact surface.

In accordance with one or more embodiments herein, a metatarsal implant (100, 300) for repairing damage in a metatarsophalangeal joint of a patient and in particular for repairing damage caused by osteofytes or as a result of osteofytes is provided. The metatarsal implant (100; 300) is adapted to be attached to an implant receiving surface (420) at least partly covering a lateral surface of the metatarsal head. A bone contacting surface (130, 330) of the metatarsal implant (100, 300) is designed to correspond to the implant receiving surface (420), the bone contacting surface (130, 330) thus comprising at least two sub-surfaces in different planes, and at least one junction point where sub-surfaces meet, and a contour curvature of the articulating surface (110, 310) is designed by simulating a healthy articulating surface of the damaged metatarsal head (410), generated based on a determined surface curvature of the cartilage and / or the bone in a predetermined area at the site of diseased cartilage and / or bone, to mimic the original, undamaged, articulating surface of the metatarsal head (410).

A dual predrilling module for drilling a fixation hole and a repair tunnel in a bone is provided. The dual predrilling module includes a body comprising a bone interface side comprising a bone contacting surface engageable with a surface of the bone or a fixation plate engaging side removably engageable with a fixation plate, and an operative side opposite the bone interface side or the fixation plate engaging side. The dual predrilling module further includes an osteotomy drill guide to create a fixation hole according to a fixation hole pathway, and a repair drill guide extending outwardly to create a repair tunnel according to a repair tunnel pathway, the repair tunnel pathway being determined to intersect a predetermined cutting plane intended to create an osteotomy and to extend across the bone to open to an articular surface of bone, without intersecting the fixation hole pathway.

The utility model relates to a turbine-shaped external connection dental implant system, which comprises a dental implant, an external plug-in body, an external connection body, a central screw and a false tooth, the dental implant comprises an implant and a plug-in frame, the implant is used for being implanted in a dental implant cavity, the implant is a turbine-shaped cylinder, the plug-in frame is integrally formed above the implant, and the external connection body is connected with the central screw through the plug-in frame. The plug-in frame is an upper conical cylinder, the outer plug-in body comprises a hollow plug-in body, the hollow plug-in body is a lower conical hollow cylinder, a hollow plug-in part is arranged on the bottom surface of the hollow plug-in body, and the hollow plug-in part is in plug-in locking fit with the plug-in frame; the turbine pieces of the implant are evenly distributed to form a multi-stage bone contact interface, the surface area of the implant and bone tissue is enlarged, three-dimensional climbing of osteoblasts is promoted, the bone regeneration and bone combination process is accelerated, gaps of the turbine pieces and the bone tissue form mechanical interlocking, the overall cylindrical turbine form of the implant is combined, the strong torsional load resistance is provided, and the bone regeneration and bone combination are promoted. And the bone resorption risk caused by micromotion is reduced.

A surgical system for joint procedures includes a distractor device with two pivotable arms and two distracting members, along with two attachable tools—one designed to hold or position a prosthetic device and interface with a bone surface, and the other to interface with the opposing bone surface and allow passage of the prosthetic device. The distractor device adjusts the arms to move closer together or farther apart, modifying the space between bone surfaces. The first tool securely engages a prosthetic device or interfaces with a bone. The second tool fits the opposing bone and includes an opening for the prosthetic device to pass through. This system facilitates controlled joint distraction and precise insertion and alignment of a prosthetic device, such as a stemmed tibial implant, during orthopedic surgery. The system is beneficial for procedures like total ankle replacement, enhancing surgical access and outcomes by supporting accurate placement of implants.