39 results about "Long bone" patented technology

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.

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.

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 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.

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.

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.

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.

Bone plate and instrument systems include interconnections and locking mechanisms to fix the bone plates to the instruments, and guide features that aim k-wires, drills, and / or fasteners to pass through holes in the bone plates when the bone plates are fixed to the instruments. The locking mechanisms include elongated flexible elements that connect to the bone plates.

The application discloses a 3D printing long bone osteotomy guide plate, and belongs to the technical field of orthopedic medical instruments. The 3D printing long bone osteotomy guide plate comprises a guide plate main body, the guide plate main body comprises a tumor fixing part, an osteotomy guiding part and an intermediate connecting part, the tumor fixing part and the osteotomy guiding part are fixedly connected through the intermediate connecting part, the tumor fixing part is in a spherical shape, the inner side of the tumor fixing part is in close contact with the outer surface of a long bone tumor, the osteotomy guiding part is clamped at the connecting position of the long bone and the long bone tumor, and the long bone tumor is cut off from the side of the osteotomy guiding part away from the tumor fixing part. The tumor fixing part is in close contact with the irregular shape of the tumor surface, the edge of the osteotomy guiding part is designed according to the direction of the osteotomy line, the guide plate is stably and closely combined with the bone and the tumor surface, sliding or misplacement is avoided, more accurate surgical positioning is provided for clinical doctors, the structure is simple, the operation is convenient, and the guide plate is suitable for large-scale popularization and application.

The present invention relates to a positioning device (100) for implantation of prosthesis in a long bone, in particular for implantation of humeral prosthesis, comprising: at least one centering element (101) with a channel (102) configured to house an intramedullary nail (11); a support element (103) configured to hold a reference mask (200) on a plane (12) at a resected metaphysis of the long bone; an adjustment element (104) configured to connect the centering element (101) and the support element (103), wherein the adjustment element (104) further comprises a displacement device (105) configured to provide a controlled offset to the support element (103) for displacing the reference mask (200) over the plane (12) of the resected metaphysis.

Implant (100) for fixing a long bone of a small animal or a bird, formed from a biocompatible hollow cylinder (102) comprising a carbon fiber composite with a closed cylinder wall (104) and a channel (106) extending axially through the hollow cylinder (102) and opening on both sides at an end face opening (108) of the hollow cylinder (102).

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 present invention relates to an orthopaedic implant and system for fixation of bones and a method for the use of the orthopaedic implant and system. The orthopaedic system finds utility for fixation of bones such as fractures of the tibia, although it may be used in any suitable long bone.

Agglomeration and deformation that occur during culture of a three-dimensional cell aggregate are suppressed to create a three-dimensional cell aggregate having a linear shape. A method for producing artificial cartilage tissue, the method comprising: agglomerating cartilage progenitor cells to form cartilage progenitor spheroids; seeding the cartilage progenitor spheroids along grooves in a membrane having the grooves; culturing the cartilage progenitor spheroids in a state in which a culture medium is supplied from the obverse side and the reverse side of the membrane to fuse the spheroids together; and then maturing the spheroids into cartilage-like tissue and / or long bone progenitor cartilage organoids.

The invention provides a telescopic intramedullary nail system, and belongs to the technical field of medical instruments. Comprising a front bone body, a rear bone body and a limiting mechanism, a fixing sleeve is slidably connected to the inner wall of a fixing groove, a sliding rod is slidably connected to the inner wall of the fixing sleeve, and a connecting sleeve is slidably connected to the inner wall of one end of the fixing sleeve; the device is characterized in that the inner wall of the fixing sleeve is provided with a limiting mechanism for preventing the sliding rod from moving backwards; along with the growth of the front bone body and the rear bone body, the overall length of the front bone body and the rear bone body can be changed, meanwhile, the sliding rod and the fixing sleeve slide relatively through the connecting sleeve, the overall length is increased, joint growth with the bone is achieved, and the sliding rod and the fixing sleeve placed in the front bone body and the rear bone body can form the effect of an intramedullary nail. The bone fracture stabilizer can be used for preventing or stabilizing bone fractures or correcting deformity of long bones in the growth process so that patients suffering from osteogenesis imperfecta, skeletal dysplasia and other skeletal deformity can use the bone fracture stabilizer conveniently.

This application discloses an automatic analysis method for CT images of long bones in mice and rats, relating to the field of image processing technology. The method includes: acquiring a CT image sequence of the target long bone, extracting the three-dimensional spatial distribution of bone tissue, and performing pose alignment and three-dimensional cropping to obtain a standardized bone image sequence; then constructing candidate depth intervals based on butterfly-shaped anatomical features and key points of growth plate strip-shaped gaps, respectively, and obtaining a fine search range through intersection operation; subsequently identifying candidate slices of triangular fractures and determining the anatomical zero point; finally, mapping the target analysis region based on the anatomical zero point, completing cortical bone segmentation, medullary cavity segmentation, and trabecular bone extraction under closed mask constraints, and outputting quantitative parameters of bone tissue. This application achieves accurate positioning of the growth plate and unified analysis region mapping in long bone CT images, improving the accuracy of trabecular bone extraction and the consistency of bone tissue quantification results.

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.

The application discloses a reduction device for long bone comminuted fracture operation, and relates to the technical field of medical devices. The device comprises a middle segment positioning mechanism and two groups of two-side segment positioning mechanisms symmetrically arranged. The middle segment positioning mechanism comprises a positioning tube provided with a wedge-shaped convex rib; the two-side segment positioning mechanism comprises a frame body, an inner movable block capable of adjusting the position in the axial direction and an outer flexible sheet, and realizes fine adjustment of the position through a lead screw and a bevel gear transmission group. The proximal ends of the two groups of frame bodies are designed in a step-shaped overlapping mode and are jointly sleeved outside the positioning tube. Through a one-way meshing structure formed by a rack in the mounting block and the wedge-shaped convex rib, and by using matched guide inclined surfaces and limiting stop surfaces, the two groups of frame bodies are realized to slide inwardly and be automatically locked. The application realizes the logic of central anchoring and two-side butt, ensures the tightness and in-operation stability of the joint between the side bone block and the middle bone block, supports vertical sliding and separation, and greatly facilitates post-operation removal.

Devices, systems, instruments, and methods for promoting healing and stability for bone fractures. A targeted interlocking plate-nail system may include an intramedullary nail configured to extend through a medullary canal of a long bone, a bone plate configured to be positioned against an exterior surface of the long bone, and a plurality of fasteners configured to extend through the bone plate, through the intramedullary nail, or through both the bone plate and the intramedullary nail, thereby interlocking the bone plate and the intramedullary nail together. Targeting instruments may be used for guiding the components into position.

The utility model discloses a four-limb long bone prosthesis with a connecting structure, which comprises a long bone prosthesis body and a steel plate, the steel plate is provided with at least one first connecting hole, the long bone prosthesis body is provided with at least one radial through threaded hole, the position of the threaded hole corresponds to the position of the first connecting hole in the steel plate, and the connecting structure is arranged on the steel plate. The steel plate and the long bone prosthesis body are locked and fixed through screws, and an anchoring structure is further arranged between the long bone prosthesis body and the steel plate. The long bone prosthesis body and the steel plate can be connected into a whole, the overall stability is improved, stress concentration and relative minimally invasive surgery are well avoided, and blood loss and infection risks are reduced. The anchoring structure is arranged between the steel plate and the prosthesis body, so that pre-fixation of the steel plate and the long bone prosthesis body is realized, and the accuracy of screw perforation can be improved.

The multifunctional umbrella comprises an umbrella handle, an umbrella rib mechanism, umbrella cloth and an umbrella cap, and the umbrella rib mechanism comprises a supporting rib assembly and a plurality of long rib assemblies; one end of the supporting rib assembly is slidably connected to the umbrella handle, and the other end is hinged to the long rib assembly; the whole long bone assembly is of a downwards-bent arc-shaped structure, the long bone assembly comprises two long bones, one ends of the two long bones are folded, and the other ends of the two long bones are bifurcated and opened; each long rib assembly is provided with a corresponding warped rib, the warped ribs extend towards the outer side of the umbrella and form an arc-shaped structure bent upwards, the two long ribs are symmetrically arranged on the two sides of the warped ribs, and the warped ribs are further connected with the rib supporting assemblies in a sliding mode through first connecting pieces. According to the scheme, the umbrella rib structure is originally created, the overall structure is more stable, and the rainproof and windproof effects are better; and the raised ribs are added into the long ribs to form cornice triangles, so that better toughness and stronger wind resistance are achieved. And meanwhile, the appearance modeling is unique and attractive, and the cornice has obvious Chinese ancient building cornice characteristics and is beneficial to promoting and developing Chinese traditional culture.

Provided is a method for manufacturing a prosthesis for a fractured long bone of a patient. The method includes: providing data representative of the fractured long bone of the patient, the fractured long bone comprising a diaphyseal fragment comprising a medullary cavity; based on the data provided, designing the prosthesis specifically to the patient, wherein the prosthesis comprising a stem part configured to be inserted into the medullary cavity for securing the stem part to the diaphyseal fragment.

Intramedullary nail for insertion into the medullary canal of long bones, comprising a first anchoring portion at its distal end, having at least one transverse through hole for allowing the passage of a first locking screw, a shank extending longitudinally from said first anchoring portion, a second anchoring portion at its proximal end longitudinally opposite to the first anchoring portion.

The present invention features a sensor implant that can adhere to bone. The sensing device is capable of sensing bone strains and reporting them as well as loads passing through bone for extended periods of time. The sensor implant can also be used to monitor bone growth for bone segmental repair of long bones or to monitor changes in bone characteristics of patients with osteoporosis. The present technology has the potential to give physicians the ability to predict when a patient with osteoporosis has an impending fracture and thus be able to intervene and prevent further damage.

Provided is a method for manufacturing a prosthesis for a fractured long bone of a patient. The method includes: providing data representative of the fractured long bone of the patient, the fractured long bone comprising a diaphyseal fragment comprising a medullary cavity; based on the data provided, designing the prosthesis specifically to the patient, wherein the prosthesis comprising a stem part configured to be inserted into the medullary cavity for securing the stem part to the diaphyseal fragment.