138 results about "Long bone" patented technology

A telescopic intramedullary nail for the treatment of fractures or deformations of long bones, such as for example in the case of osteogenesis imperfecta or pseudoarthrosis may include a hollow stem and a rod telescopically coupled inside said hollow stem. The hollow stem may include, at a free distal end, an anchor tip configured to be internally fixed inside a distal portion of a long bone of a patient, without protruding from said long bone. The rod may include a free proximal end arranged to be fixed to a proximal site of said long bone.

The invention belongs to the crossing field of biomedical engineering and additive manufacturing, and particularly relates to a 3D printing metamaterial piezoelectric bone defect repair scaffold, and the pore structure of the scaffold is formed by compounding three extremely small curved surface units, namely Gyandroid, SchwarzP and Diamond, which are defined by mathematical expressions; the porosity of the stent is 30%-70%, and the pore diameter range is 0.1-1 mm; the stent is made of a piezoelectric composite material composed of polyvinylidene fluoride (PVDF), polylactic acid and barium titanate, the piezoelectric composite material comprises the following components in percentage by mass: 30%-55% of polyvinylidene fluoride (PVDF), 20%-45% of polylactic acid (PLA) and 10%-25% of barium titanate (BaTiO3), and the sum of the mass percentages of all the components is 100%. Precise regulation and control of a macrostructure and a microstructure are achieved through a multi-material 3D printing technology, and the system has the mechanical adaptability, degradation controllability and the function of actively promoting bone regeneration and is suitable for large-section bone defect repair scenes such as craniomaxillofacial and long bones of four limbs.

A bone reattachment system includes an intramedullary implant that includes a longitudinal axis that extends between a first end and a second end thereof, and a stem body that defines at least the second end and is configured to be received within an intramedullary canal of a long bone. The system also includes a clamping assembly for clamping a first bone segment to a second bone segment and includes a mount, a clamp, and an end effector. The mount is connectable to the first end of the intramedullary implant. The clamp has a first end connected to the mount and a second end moveable relative to the first end. The end effector is connected to and extends from the second end of the clamp such that movement of the second end of the clamp relative to the first end moves the end effector in a direction transverse to the longitudinal axis of the intramedullary implant.

treatment of skeletal dysplasias in children, and improvement in one or more symptoms of skeletal dysplasias, such as long bone growth or growth velocity, by administering variants of C-type natriuretic peptide (CNP) is described.

The invention provides an anti-rotation assembly for an orthopedic surgery reference frame, and relates to the technical field of medical instruments, the anti-rotation assembly comprises a main body with a movable cavity inside, and a locking piece moving in the movable cavity; the locking piece is provided with at least two contact surfaces, and the locking piece has an initial state and a locking state relative to the main body; the main body is provided with at least two limiting holes penetrating through the movable cavity, and each limiting hole is provided with at least two non-parallel inner walls; the traction structure is connected with the locking piece and drives the locking piece to linearly move, so that the locking piece reaches a locking state from an initial state, and in the moving process, a clamping space formed by the contact surface and the inner wall of the limiting hole is reduced; the traction structure enables the locking piece to be fixed at any position of the movable cavity, and the problems that various knocking and drilling actions are involved in a long bone operation, the fierce vibration enables the reference frame inserted into a bone to rotate relative to the bone, and then the whole navigation system generates a large error are solved; and the prior art is not suitable for relatively thin bones.

Systems and methods for reaming an intramedullary canal of a long bone comprise a trial stem configured to extend into the long bone along an insertion axis and a guide device comprising an adapter configured to couple to the trial stem and a reaming guidepost extending from the adapter along a guide axis, wherein the guide axis and the insertion axis are non-aligned. A method of reaming an intramedullary canal of a long bone to form a complex shaped socket can comprise inserting a stem into the intramedullary canal along an insertion axis, connecting a guide device to the stem, the guide device comprising a guidepost extending along a guide axis and guiding a cannulated reamer along the guidepost to remove bone from the intramedullary canal to form the complex shaped socket, wherein the guide axis and the insertion axis are non-aligned.

An implant assembly for a long bone is adapted to support an exo-prosthesis. The assembly includes a stem, a subdermal component and a percutaneous post. The stem has a proximal end that is adapted to be received in a surgically prepared medullary canal of the long bone, and a distal end having a surface that is adapted to promote bone ingrowth. The subdermal component includes a proximal portion that is adapted for attachment to the distal end of the stem, and a fixation surface that is adapted to promote soft tissue fixation. The percutaneous post has a proximal end that is adapted to be attached to the subdermal component.

The present disclosure is directed to a method of preparing an osteogenic bone graft. The method includes introducing an anticoagulant compound into a volume of cellular material including a mononuclear cell population from the intramedullary canal of a long bone; collecting an effluent including the volume of cellular material containing the anticoagulant compound at a collection point; separating a concentrated cell fraction from the effluent, the concentrated cell fraction including the mononuclear cell population and the anticoagulant compound; and preparing an osteogenic bone graft from the concentrated cell fraction.

Provided are bone plates and systems including such plates. The present plates may be used for example, to accommodate spinolaminar junction or as a plate locking screw system for posterior spinal fixation in the cervical, thoracic, lumbar and sacral spine, extremities, pelvis and long bone fixation. The present devices and systems may include modular plates, rods and rails. Devices and systems herein relate to both open methods and minimally invasive surgery applications. Also provided are locking plates and systems relating to tethering applications. Further provided are kits including any of the present kits or devices, and methods including insertion of any of the present plates or systems into a patient.

An intramedullary nail (1) for long bones, comprising: a tube (2) extending in an axial direction of the intramedullary nail (1), the tube (2) comprising a first through slot (21) aligned longitudinally in the axial direction; a first rod (3) extending in the axial direction and telescopically coupled within the tube (2), the first rod (3) further configured for axial displacement within the tube (2). The first rod (3) comprises a first hole (31) perpendicular to the axial direction and configured for receiving a first fastening screw (100), the first hole (31) being configured for axial displacement along the first through slot (21) to displace the first fastening screw (100) in the axial direction. The first rod (3) further comprises: a second hole (32) perpendicular to the axial direction; a guide element (5) housed in the second bore (32) and axially displaceable in the axial direction, the guide element (5) being enclosed within the outer contour of the tube (2) and configured for preventing a relative rotation of the first rod (3) with respect to the tube (2). (Figure 5)

The utility model relates to a novel uterus holder relates to medical equipment technical field for solving the problem that the internal tissue of uterus in prior art is extremely easy to fall into the gap between two adjacent uterus umbrella long bones, this not only can influence the definition of operation visual field, still can cause certain interference to the precision of operation operation, including: uterus holder body, uterus umbrella subassembly and storage spare, the storage spare installs on the uterus holder body, the uterus umbrella subassembly includes the hollow umbrella stem, umbrella face and multiple umbrella bones, one end of umbrella stem removes setting in the storage spare, the storage spare is used for accomodating the uterus umbrella subassembly, the other end of each umbrella bone rotates and installs in the umbrella stem, the umbrella face covers on the umbrella bone, each umbrella bone with the umbrella stem all is provided with umbrella bone angle adjusting spare, the rotation included angle between umbrella bone and the umbrella stem is arranged 0~90 DEG.

Systems and methods for reaming an intramedullary canal of a long bone comprise a trial stem configured to extend into the long bone along an insertion axis and a guide device comprising an adapter configured to couple to the trial stem and a reaming guidepost extending from the adapter along a guide axis, wherein the guide axis and the insertion axis are non-aligned. A method of reaming an intramedullary canal of a long bone to form a complex shaped socket can comprise inserting a stem into the intramedullary canal along an insertion axis, connecting a guide device to the stem, the guide device comprising a guidepost extending along a guide axis and guiding a cannulated reamer along the guidepost to remove bone from the intramedullary canal to form the complex shaped socket, wherein the guide axis and the insertion axis are non-aligned.

This invention discloses a method and system for measuring the ratio of long bones in human limbs to height based on images. The method includes steps such as acquiring image sequences, selecting target frames, estimating two-dimensional human pose, predicting the ratio of long bones in limbs to height, labeling potential anomalies, and iterative updates. By acquiring human experience data, the method simultaneously verifies the model detection results and the potential anomaly labeling results based on this data. If there is a significant difference between the model detection results and the human experience data, it indicates that the model accuracy is insufficient and needs updating. If the number of abnormal individuals in the potential anomaly labeling results exceeds a preset proportion threshold, it indicates that the weighting of the linear relationship between long bones in limbs and height is incorrect. This invention offers convenient measurement, high measurement accuracy, and is unaffected by factors such as age, gender, or race; it is suitable for obese individuals and has good versatility.

The utility model relates to the technical field of implants, in particular to an implant external fixing device for an extraosseous implant tooth, which solves the problem of long bone grafting treatment period when the bone width of a patient is insufficient, and comprises a fixing body for an implant, the fixing body comprises a limiting structure and connecting structures, the limiting structure is of an arc-shaped structure, the connecting structures are fixed to the two ends of the limiting structure respectively, the bottom of each connecting structure is connected with a locking block structure with a locking function, and the bottom of each locking block structure is provided with a transition structure with a guiding function. The fixing bodies are respectively arranged at the neck, the middle and the root of the implant, the operation is simple and convenient, the pain of a patient is small, the healing effect is good, the chair-side time of the patient is shortened, and the implant has a good development prospect.

Telescopic nail for the treatment of fractures or deformations of long bones, as for example in the case of osteogenesis imperfecta or pseudo arthrosis. Comprising of a hollow stem; a rod telescopically inserted into said hollow stem; a first fastening element coupled to an end of said hollow stem for fixing to a first long bone end; a second fastening element coupled to an end of said rod for fixing to a second long bone end. Advantageously, one end of said hollow stem is provided with coupling means for coupling to an end of a tool which can be inserted into a cavity formed in the bone for insertion of the nail.

The invention relates to an apparatus for treating a fracture of a bone, in particular a human long bone, comprising a bone nail (1) having a first end (2) and a second end (3), with at least one first bore (4) in a region of the first end (2) and at least one second bore (5) in a region of a second end (3) being provided transversely to a longitudinal axis (6) of the bone nail (1), so that the bone nail (1) can be fixed in place in the bone by locking pins (7) arranged in the bores (4, 5) and protruding out of the bores (4, 5). In order to enable a stable positioning in a bone in a simple manner, it is provided according to the invention that the bone nail (1) comprises a channel (8) that extends, at least in regions, approximately along a longitudinal axis (6) in the bone nail (1) and, on one side, is connected to the at least one second bore (5) and, on the other side, to an introduction opening (9) arranged in a region between the first end (2) and the second bore (5) in a lateral surface (19) of the bone nail (1), so that an illumination of the second bore (5) is possible from an interior of the bone nail (1) in that a lamp (10) is inserted into the channel (8) via the introduction opening (9) and is moved into a region of the second bore (5) in order to be able to determine a position of the second bore (5) with the aid of an emission of light from the second bore (5) when the bone nail (1) is arranged in a bone.

An intramedullary nail (1) for long bone traction comprises a first tube (3) extending along the axial direction of the intramedullary nail (1); a second tube (5) extending along the axial direction of the intramedullary nail (1), the second tube (5) being coupled to the first tube (3) so as to be axially movable with respect to each other; a first locking opening (7) located in the end region of the first tube (3) away from the second tube (5); and a coil (11) arranged in the coil region of the first tube (3) between the first locking opening (7) and the second tube (5).

The application discloses an individual customized long bone defect filling biomimetic bone block, which has biological compatibility and is a topological optimization structure and comprises a support cylinder, a middle filling body and an inner filling body from outside to inside. The support cylinder is a dense cylindrical structure, has connecting parts for being connected with bone cortices at both ends of the support cylinder, and further has fusion parts at both ends of the inner wall of the support cylinder. The fusion parts are annular and are made of degradable material with a porous lattice structure, and the outer end surface of the fusion part is in contact with the end surface of the connected bone cortex. The middle filling body is arranged in the support cylinder and is filled between the two fusion parts and is made of degradable material. The inner filling body is filled in the middle filling body, and both ends of the inner filling body do not extend into the fusion part. The middle filling body and the inner filling body are stacked by a plurality of porous cell units. The dense non-degradable material and the loose porous degradable material are combined, the mechanical properties are optimized through the topological structure, the growth simulation is realized by using different lattice form characteristics, and the rapid osteogenesis is promoted.

The invention relates to an endoprosthesis shaft system for elongate bones, comprising an anchoring part and a shaft, which is formed from module elements that can be coupled by means of a plug-in connection, wherein a mutual rotation of the elements along the shaft is adjustable and is blocked by means of an anti-rotation mechanism. In order to adjust the rotation, a rotation piece is provided as a further module element, which has a self-contained rotation adjustment device and a clamping device as a mechanism for blocking the rotation. The rotation piece comprises two end faces for the plug-in connection and a sleeve. The invention provides, with the rotation piece, a particular module element for the shaft, which as a structural unit allows both an adjustment of the rotation and a blocking against undesired rotation in a self-contained unit.

The present invention discloses an intramedullary reducer for long bone fractures of limbs, comprising a guide hose, a guide wire, a driving mechanism and a wire feeding mechanism. The guide hose can be extended into the medullary cavity of the long bone shaft, and a capsule body capable of guiding the forward direction of the guide hose is fixed at the front end of the guide hose. The guide wire is inserted into the guide hose, and the front end of the guide wire extends out of the guide hose and is fixed with a blunt head abutting against the guide hose. The driving mechanism is used to drive the guide hose to move forward, and the distance between the driving mechanism and the front end of the guide hose is at least 10 mm. The wire feeding mechanism is placed outside the long bone shaft and is used to drive the guide wire to move forward.

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 relates to the technical field of medical instruments, and discloses a tibia transverse moving device which comprises a traction mechanism, two connecting rod mechanisms connected to the two sides of the traction mechanism, a universal rotating mechanism arranged at the tail ends of the connecting rod mechanisms and a long bone needle clamping mechanism arranged at the tail end of the universal rotating mechanism. Wherein the traction mechanism is configured to drive a bone block to move transversely, the connecting rod mechanism comprises a length-adjustable telescopic unit, and the universal rotating mechanism realizes three-dimensional angle adjustment. Through the synergistic effect of all the components, the surgical suitability and the operation accuracy can be effectively improved.

The invention discloses a lower limb projection image generation method and a terminal. The method comprises the following steps: acquiring a full lower limb three-dimensional model, and processing the full lower limb three-dimensional model to obtain a single-side lower limb long bone model and a single-side lower limb three-dimensional model; extracting a surface data point set of the single-side lower limb long bone model, and extracting a projection reference point of the single-side lower limb long bone model from the surface data point set based on bone anatomical features; and determining a standard projection direction of the single-side lower limb three-dimensional model according to the projection reference point, and projecting the single-side lower limb three-dimensional model based on the standard projection direction to obtain a single-side lower limb projection image. According to the invention, the projection direction can be automatically calculated, and the subjectivity of manual adjustment is avoided, so that the accuracy of the projection image is ensured, and the imaging efficiency of the projection image is improved.

The invention relates to the technical field of medical instruments, in particular to a backbone lesion windowing tool set which is easy and convenient to operate, capable of rapidly manufacturing a bone window on a long bone backbone and reducing the occurrence rate of pathological fracture in the bone window manufacturing process and after the operation, regular in window shape, smooth and non-sunken in cross section, capable of reducing the window area to the maximum extent and capable of improving the production efficiency. Postoperative recovery is facilitated; comprising a trephine and a swing saw, the trephine, the swing saw and the guide plate assembly jointly form a windowing tool set, the positioning needle core is located on one side of sawteeth of a trephine pipe and fixed in the trephine pipe of the trephine through a fixing piece, and the tip end of the positioning needle core extends outwards from the inside of the trephine pipe.

An endoprosthesis intended to replace a resected portion of bone and joint. The endoprosthesis can be non-invasively, manually operated to lengthen a patient's limb both intraoperatively and postoperatively. It includes bone anchoring components for anchoring to a first and second long bone, a joint to replace the function of an orthopedic joint, and a purely mechanical lengthening mechanism which can be located and operated manually by an operator by pressing on skin of a patient without requiring a surgical incision. The axle for joint is the actuating mechanism that lengthens the implant. The endoprosthesis does not need or include any magnets, electric motors, electric current, application of heat or a fluid displacement (hydraulic) system.

Methods and devices for applying a compressive force to a growth plate in a long bone of a pediatric patient. A dynamically compressive bone plate is provided for applying the compressive force to the growth plate of the long bone. By applying compressive force to the growth plate in the long bone, the activity of the growth plate is suppressed, inactivated, or otherwise shut down.

A memory alloy periosteal traction plate is provided, including a plate body and screws. A work surface, a proximal installation end, and a distal installation end are formed on the plate body. The work surface fits a surface of a curved long bone, and extends in a length direction of the long bone. The proximal installation end is located at one end, close to a proximal end of the long bone, of the plate body, and the distal installation end is located at one end, close to a distal end of the long bone, of the plate body. Both the proximal installation end and the distal installation end are firmly connected to the long bone through screws by means of multiple fixing points, the plate body can gradually transition from a bending state to a straight state by means of deformation.

A method for implanting a telescopic nail may include providing a telescopic nail comprising a hollow stem, a rod inserted telescopically into the hollow stem, a first fastening element configured to couple to an end of the hollow stem for fixing to a first long bone end, and a second fastening element configured to couple to an end of the rod for fixing to a second long bone end. The end of the hollow stem couples to a coupling end of a perforating tool. The method further includes the steps of inserting the perforating tool opposite to the coupling end inside the cavity, coupling the end of the hollow stem of the telescopic nail together with a counter-coupler of the coupling end of the perforating tool, and advancing the perforating tool inside the cavity until it comes out completely from the other long bone end.

The invention relates to a prosthesis (10), in particular a knee prosthesis or a hip stem prosthesis, with a stem (12) for arrangement and attachment in a long bone, wherein the stem has two stem sections (30, 32) separated from each other by a slot-shaped space (28) with slot boundary surfaces facing each other, wherein the stem sections are deformable from an undeformed rest state by bending load such that the slot-shaped space narrows, wherein a first distance of the slot boundary surfaces measured in the undeformed rest state in a slot area spaced from the distal end of the stem is smaller than a second distance of the slot boundary surfaces measured in the undeformed rest state at the distal end of the stem.

A patient positioning device for use during the repair of a long bone procedure includes a crescent-shaped member detachably coupled to an elongated post member, a patient positioning instrument mounted in the track of the crescent-shaped member having an adjustable radial position toward the center of the crescent-shaped member, where the patient positioning instrument comprises at least one of a padded plunger, a bone pusher, and a bone hook. The device further includes a horizontally-oriented brace member mounted in the track of the elongated post member having an adjustable height position along the track, and the patient positioning instrument and the brace member being adapted to securely hold and support a patient's anatomy. The patient positioning device is coupled to a clamp for secure mounting to a surgical table.