683 results about "Femur bone" patented technology

A system for computer assisted navigation during surgery includes a computer platform that operates to register a target surgical area of a patient. In certain cases, a process includes: obtaining a pre-op CT image of a pelvic region of a patient and intra-operatively obtaining a point cloud data about the pelvic region with a navigated instrument, generating a 3D bone model which excludes non-targeted area such as a femur, and then merging the 3D bone model to the point cloud to register the target surgical area.

A system for computer assisted navigation during surgery includes a computer platform that operates to register a target surgical area of a patient. In certain cases, a process includes: obtaining a pre-op CT image of a pelvic region of a patient and intra-operatively obtaining a point cloud data about the pelvic region with a navigated instrument, generating a 3D bone model which excludes non-targeted area such as a femur, and then merging the 3D bone model to the point cloud to register the target surgical area.

A system for computer assisted navigation during surgery includes a computer platform that operates to register a target surgical area of a patient. In certain cases, a process includes: obtaining a pre-op CT image of a pelvic region of a patient and intra-operatively obtaining a point cloud data about the pelvic region with a navigated instrument, generating a 3D bone model which excludes non-targeted area such as a femur, and then merging the 3D bone model to the point cloud to register the target surgical area.

A system for computer assisted navigation during surgery includes a computer platform that operates to register a target surgical area of a patient. In certain cases, a process includes: obtaining a pre-op CT image of a pelvic region of a patient and intra-operatively obtaining a point cloud data about the pelvic region with a navigated instrument, generating a 3D bone model which excludes non-targeted area such as a femur, and then merging the 3D bone model to the point cloud to register the target surgical area.

An improved orthopedic broach used to prepare an intramedullary canal of a patient's bone such as, for example, a patient's femur, to receive an orthopedic implant such as, for example, a hip stem implant. The broach has differential teeth or tooth patterns. In one preferred example, the broach includes three different types of teeth including diamond teeth, compaction teeth, and extraction teeth. The different teeth patterns being specifically arranged on the sides of the broach to optimize bone removal and bone compaction for a subsequently implanted hip stem implant. In addition, the different teeth patterns and locations enhancing rotational stability. As such, the broach is configured to compact bone in certain areas while removing bones in other areas, all while maintaining broach rotation.

The invention provides an osteotomy path adjusting system in robot-assisted knee arthroplasty, and belongs to the technical field of knee joint detection. The system comprises a multi-modal data acquisition unit which comprises a knee joint pressure measuring gasket, an optical acquisition module and a kinematics data acquisition module, the knee joint pressure measuring gasket is used for acquiring knee joint pressure signals in an operation, and the optical acquisition module is used for acquiring relative poses of a femur and a tibia; the kinematics data acquisition module is used for acquiring kinematics data of the mechanical arm; the main control calculation unit comprises a data fusion module and a dynamic compensation module, and the data fusion module is used for constructing a synchronous spatio-temporal data set; and the dynamic compensation module is used for outputting a compensation instruction to the mechanical arm to adjust an osteotomy path based on the synchronous spatio-temporal data set, the preoperative predicted pressure prediction matrix and the soft tissue stiffness matrix. The pressure change in the operation can be responded in real time, the operation precision of the knee arthroplasty is improved, and the dependence on the experience of doctors can be reduced.

The invention provides a plant lactobacillus TH13, and the preservation number of the plant lactobacillus TH13 is CGMCC (China General Microbiological Culture Collection Center) NO.32112. The plant lactobacillus TH13 provided by the invention can be used for fermenting folium cortex eucommiae and enzymatically hydrolyzed bone meal, and the fermentation product of the plant lactobacillus TH13 has high content of chlorogenic acid, proline, glycine and lysine. The fermentation product can significantly improve the content of alkaline phosphatase (ALP) and osteocalcin (OCN) in mouse serum and reduce the content of tartrate-resistant acid phosphatase (TRACP). Therefore, the fermentation product can significantly improve the bone mineral density of the femur, increase the number of bone trabecula and significantly reduce the separation degree of the bone trabecula, thereby promoting bone formation of a mouse with senile osteoporosis, inhibiting bone resorption and improving senile bone loss and bone microstructure deterioration. The preparation method of the probiotic preparation containing the plant lactobacillus and the probiotic fermentation product is simple, and large-scale production can be realized.

The invention provides a joint reconstruction full-dimensional operation planning method, system and device based on anatomy biomechanical kinematics and a computer readable storage medium. The method comprises the following steps: acquiring a hip joint CT image of a patient; performing three-dimensional reconstruction based on the hip joint CT image to obtain a hip joint three-dimensional model; performing preoperative planning based on the hip joint three-dimensional model to obtain an initial preoperative planning scheme; after a simulation operation is carried out according to the initial preoperative planning scheme, postoperative motion simulation is carried out on the hip joint femur and the hip joint pelvis, and whether the corresponding normal joint motion range can be reached or not through various motion simulation is judged; and if at least one motion simulation cannot reach the corresponding normal joint motion range, adjusting the initial preoperative planning scheme to obtain a final preoperative planning scheme. According to the embodiment of the invention, preoperative planning can be more accurately carried out.

A femur-first orthopaedic surgical procedure may include using a surgical navigation system to perform one or more initial measurements on a femur of a patient, a tibia of the patient, or both and to develop a surgical plan for the orthopaedic surgical procedure based on the one or more initial measurements, performing a first resection of the femur, using the surgical navigation system to perform one or more later measurements of the tibia that were inaccessible prior to the first resection of the femur and to confirm the surgical plan based on the one or more later measurements of the tibia, performing a tibial resection of the tibia based on a planned tibial resection plane of the surgical plan after confirming the surgical plan, and performing additional resections of the femur based on planned femoral resection planes of the surgical plan after confirming the surgical plan.

The invention discloses bifidobacterium longum subsp.infantis capable of promoting bone growth and a metagen thereof, and belongs to the technical field of biology. The bifidobacterium longum subsp. Infantis CCFM1445 provided by the invention can promote the increase of bone volume fraction, femoral bone trabecula thickness and far-end growth plate thickness of mammals in a growth period, reduce the levels of serum bone resorption markers I-type collagen amino-terminal peptide and tartrate-resistant acid phosphatase, improve the levels of serum bone alkaline phosphatase and parathyroid hormone, and improve the clinical application value of the bifidobacterium longum subsp. Infantis CCFM1445. And the relative abundance of the other bacteria in the intestinal flora and the levels of creatine and indole-3-lactic acid are increased. The thermally inactivated bifidobacterium longum subsp. Infantis CCFM1445 can promote the increase of the volume fraction of femoral bones and the number of bone trabecula of malnourished mice and improve the N-terminal propeptide level of serum I-type procollagen. Therefore, the medicine or health care product prepared from the bifidobacterium longum subsp. Infantis CCFM1445 can be used for assisting in regulating bone metabolism and bone mass, and has a wide market prospect.

A proximal femur replacement implant assembly (500, 1000) arranged and configured to replace a head portion of a patient's proximal femur is disclosed. In some examples, the proximal femur replacement implant assembly includes a proximal femur replacement implant (505, 1005) arranged and configured to be coupled to, or inserted into an intramedullary canal of, a remaining portion of a patient's femur. The proximal femur replacement implant being arranged and configured to engage a bone plate (510, 1010, 1050) to, for example, minimize micromotion of the patient's greater trochanter to promote porous in-growth and to constrain movement of the greater trochanter.

Disclosed herein is a system and method for providing pre-operative planning and intra-operative guidance to a surgeon to assist in the optimal placement of the stem portion of a femoral implant within the intramedullary canal of a patient's femur during hip replacement surgery. In particular, the system and method provide information regarding contact points between the femoral stem in the patient's intramedullary canal to alleviate risk, inform the surgeon on key pre- and intra-operative decisions and guide femoral broaching and / or stem placement for optimal proximal fixation of the femoral implant.

Systems and methods for planning and assisting orthopaedic surgical procedures include a computer system and a robotic surgical device. The computer system receives multiple surgeon preferences, including target values and boundary values for surgical parameters of the orthopaedic surgical procedure. A surgeon uses the computer system to perform bony registration and leg-alignment registration for anatomy of a patient. The computer system determines a surgical plan for the orthopaedic surgical procedure based on the surgeon preferences, the bony registration, and the leg-alignment registration. The surgical plan includes planned values associated with the surgical parameters that are within the boundary values of the surgeon preferences. Determining the surgical plan may include automatically adjusting tibial coronal alignment, femoral coronal alignment, femoral flexion, femoral rotation, distal femoral resection height, proximal tibial resection height, and / or distal femoral resection height. The computer system may control the robotic surgical device according to the surgical plan.

The present disclosure involves object recognition as a method of registration, using a stereoscopic camera on Augmented Reality (AR) glasses or an endoscope as the image capture technology. Exemplary objects include surgical tools, anatomical components or features, such as bone or cartilage, etc. By detecting just a portion of the object in the image data of the surgical scene, the present disclosure may register and track a portion of the patient's anatomy, such as the pelvis, the knee, etc. The present disclosure also optionally displays information on the AR glasses themselves, such as the entire pelvis, the femur, the tibia, etc. The present disclosure may include combinations of the foregoing features, and may eliminate the need for electromagnetic, inertial, or infrared stereoscopic tracking as the tracking technology.

A left-right pair of rear tethers is configured such that one-end portions thereof are anchored to a left-right pair of front-rear extension portions, other-end portions thereof are anchored to a seatback or to the vehicle body, and during passenger restraint each of a left-right pair of front-rear extension portions is pulled relatively in a seat diagonally rearward and downward direction such that a coupling portion approaches a femur area of a passenger.

The invention belongs to the technical field of biology, and particularly relates to casein phosphopeptides for promoting absorption of calcium, iron and zinc minerals and improving bone health. Casein phosphopeptides containing high-activity peptide fragments are obtained through an optimization process, six mineral elements of calcium, magnesium, copper, iron, zinc and manganese serve as research objects, firstly, mineral utilization of CPP is evaluated through a mineral deficiency rat model, the content of Ca, Mg, Cu, Fe, Zn and Mn in thighbones is increased by 7.12%, 3.56%, 20.76%, 15.84%, 9.94% and 67.12% respectively when the CPP is eaten by 7mg / kg.d; secondly, screening a peptide fragment with calcium absorption promoting activity from the CPP by utilizing a molecular docking technology, and performing functional verification; the invention aims to reveal the action effect of CPP in mineral absorption and utilization from cell and animal levels, and provides a theoretical basis for functional development of CPP.

Computer implemented methods, systems, and computer products employing program code or algorithms for use in customized patient specific hip implants or femoral stems or sleeves having an outer surface that corresponds more closely to the inner surface of the cortical bone of a patient's femur compared to conventional hip implant or femoral stems or sleeves based on population-based design.

The invention discloses a bone scaffold fusion design and preparation method based on mirror image registration, and the method comprises the steps: firstly, based on a three-dimensional medical image of a femoral defect region of a patient, combining an opposite-side complete femoral CT image, and achieving the automatic recognition and complementation of the defect region through the mirror image transformation and ICP registration technology; after defect boundary extraction is completed, three-dimensional reconstruction is carried out on the individualized outer contour of the left bone tissue, and an STL format model is exported. According to the femur functional partition characteristics, a Diamond structure is adopted in a cortical bone area to enhance mechanical support, and a Gyandroid structure is selected in a cancellous bone area to achieve porosity gradient filling, so that the permeability is optimized, and cell proliferation is promoted. Continuous transition among the structures is realized through a Sigmoid function, and the stability and the biological adaptability of the whole structure are improved. And finally, the stent model is subjected to selective laser melting, and a Zn-3Mg alloy material is utilized to complete printing manufacturing.

A system for surgical registration. The system may include at least one computing device in communication with a surgical navigation system and the surgical device. The at least one computing device: a) receiving external bone registration data corresponding to locations on the exterior surface of the femur; b) calculating a first registration transform based on the external bone registration data; c) transforming a first bone removal plan of a surgical plan to the operative coordinate system based on the first registration transform; d) receiving internal bone canal registration data corresponding to at least one of location or orientation data from the inner canal of the femur; e) calculating a second registration transform based on both of the external and internal bone canal bone registration data; and f) transforming a second bone removal plan of the surgical plan to the operative coordinate system based on the second registration transform.

The invention relates to the technical field of medical orthopedic simulation devices, and discloses an orthopedic hip arthroscopic surgery simulation device which comprises a base, a supporting assembly is arranged on the upper side of the base, and a longitudinal moving assembly is arranged above one side of the supporting assembly. Transverse moving assemblies are arranged above the other side of the supporting assembly and on one side of the longitudinal moving assembly, one of the two transverse moving assemblies is provided with a thighbone model in a clamping mode, and the other one of the two transverse moving assemblies is provided with a pelvis model in a clamping mode. The supporting assembly comprises a right-angle table fixedly arranged at the position, close to one side, of the upper end of the base. According to the hip joint arthroscopic surgery simulation device for the orthopedics department, through overall cooperative use, movement in different directions under the normal condition is simulated, movement tracks in different spaces are improved, operation simulation is more flexible and real, and the operation ability of doctors in the surgery is improved.

An image registration system and a method for a femur surgery relates to the field of surgery image registration are provided, before a surgery, DRR projections at different angles are carried out of a three-dimensional femur CT image, femoral coordinate systems and femoral characteristic points are respectively generated and selected on a the two-dimensional DRR projection images and two-dimensional X-ray images. Based on the femoral coordinate systems and the femoral characteristic points, the two-dimensional DRR projection images and the two-dimensional X-ray images are registered, so that the image registration precision is improved, a two-dimensional DRR projection image in the same femoral posture as a femoral posture during a two-dimensional X-ray image scanning can be accurately obtained, which can obtain a real surgical path for surgical navigation, ensures the precision of surgery-assisted navigation, and further improves the surgery quality.

The invention discloses a preparation method of a bionic beetle skeleton implant, and belongs to the field of femoral implantation. The bionic structure characteristics of beetle elytra and cuticle are creatively combined, the mechanical strength and structural stability of the porous nickel-titanium alloy structure implant are effectively improved through the bionic structure design method, and the long-standing stress shielding effect problem of a traditional femoral metal implant is successfully solved; the porous nickel-titanium alloy bionic skeleton structure prepared by adopting a selective laser melting (SLM) technology not only has good mechanical suitability, avoids rejection and shedding reaction with natural bone tissues after implantation, but also can realize a complete shape memory recovery function in a room temperature environment, and has good application prospects in the field of medical orthopedic implantation.

Systems and methods are disclosed for a computerized framework that provides novel mechanisms for determining automatic placement of a reference grid and an anatomical reference frame (ARF) of a bone. The disclosed framework operates to implement computerized mechanisms that may determine, provide, and / or display an anatomically correct position of a femoral tunnel and / or other forms of surgical markers that are surgeon dependent for an anterior cruciate ligament (ACL) procedure based on a three-dimensional (3D) model of the distal femur. The disclosed framework also operates to implement computerized mechanisms that may determine, provide, and / or display an anatomically correct position of the tibial tunnel and / or other forms of surgical markers dependent on an ACL procedure surgeon based on a three-dimensional (3D) model of the proximal tibia.

The present invention belongs to the technical field of medical devices, and discloses a multi-angle femoral osteotomy guide capable of protecting ligaments and a method of using the same, wherein the multi-angle femoral osteotomy guide capable of protecting ligaments comprises a gap positioning block and an osteotomy guide, wherein the gap positioning block extends in one direction and is configured with a positioning direction consistent with the direction, the gap positioning block has a positioning end and a mounting end sequentially arranged along the positioning direction, and the femoral osteotomy guide can be inserted into the bone joint along the positioning direction through the positioning end; the osteotomy guide is detachably slidably connected to the mounting end of the gap positioning block, and can be moved along the positioning direction on the gap positioning block, so that the gap positioning block can be detached from the osteotomy guide in a direction opposite to the positioning direction. The present invention adopts a connection structure in which the gap positioning block and the osteotomy guide can be installed and detached along the positioning direction, so that the oscillating saw will not touch the ligament when osteotomizing the distal end of the femur, thereby effectively protecting the ligament.

There is provided a computer-implemented method of estimating fetal weight, the method comprising the steps of: a) providing a plurality of ultrasound images comprising image data representative of the anatomical structure and appearance of a head, an abdomen and a femur of a fetus in utero; b) utilising the image data in a first machine learning model comprising one or more neural networks to generate one or more latent space representations of the anatomical structure and appearance of the fetus and one or more predicted measurements of the anatomical structure of the fetus; and c) utilising the one or more predicted measurements and the one or more latent space representations in a second machine learning model to generate an estimated weight of the fetus.

The invention belongs to the technical field of biomedical engineering, and particularly relates to an in-vitro testing method and device for an artificial meniscus, and the device comprises a femur model, a tibia model, a pressure sensor a, a low-modulus high-strain sensor, a high-modulus low-strain sensor, two fixing sheets, an upper chuck, a servo motor, a transmission device and a pressure sensor b, according to the method, the artificial meniscus is fixed between the femur model and the tibia model according to the human body structure, axial pressure is applied to the artificial meniscus through the femur model, and the axial pressure, acting on the tibia model, of the artificial meniscus, the actual circumferential bulging strain value of the artificial meniscus and the actual circumferential bulging stress value of the artificial meniscus are monitored. The testing method is simple and convenient, the characteristic that the wedge-shaped structure of the meniscus bulges outwards during extrusion is utilized, the stress condition of the material can be reflected in multiple directions through multiple cooperation of the sensors, and the complex mechanical property of the meniscus is accurately measured.

The invention discloses a thighbone inverted-hitting intramedullary nail entry point guide plate and a preparation method thereof, and aims to improve the precision and efficiency of a thighbone intramedullary nail operation. The guide plate comprises an attaching plate and a guide column, the attaching plate is provided with an attaching face precisely matched with a femoral intercondylar fossa and an inner side condylar area, it is ensured that the guide plate can be stably attached to the distal end of the femur, and stable support is provided for an operation. One end of the guide column is connected with the pasting plate, the other end of the guide column extends towards the proximal femur, a guide hole is formed in the guide column, the central axis of the guide hole is strictly collinear with a preset needle inserting point at the distal femur, and reliable guidance is provided for accurate insertion of an intramedullary nail. The guide plate can be prepared before an operation, assists a doctor in quickly positioning a needle inserting point during the operation, effectively shortens the operation time, improves the operation efficiency, reduces the operation risk, and provides an efficient and accurate auxiliary tool for the femoral intramedullary nail operation.

The present invention relates to the technical field of medical devices, and proposes a proximal femoral fixation steel plate, comprising a steel plate body and a first screw, wherein the first screw comprises a nail tube, a rotating cylinder and a drill rod, wherein the nail tube penetrates and is slidably arranged in the steel plate body, and the peripheral side of the nail tube is provided with an annular groove and a first through hole that are interconnected; the rotating cylinder is rotatably arranged in the annular groove, and the peripheral side thereof is provided with an interconnected reinforcement groove and a second through hole; the drill rod is fixedly arranged on the rotating cylinder, and its length direction is parallel to the axial direction of the nail tube, and the side away from the axis of the nail tube is spaced from the peripheral side of the rotating cylinder. The present invention arranges a rotating cylinder and a drill rod on the nail tube, and when the nail tube is screwed into the femur, the drill rod can be driven to move along the axial direction of the nail tube, so as to open a line groove for storing bone cement on the inner wall of the femoral borehole, which not only improves the degree of fixation of the first screw and the femur, but also reduces the damage area of ​​the femur to the drill rod.

A dynamic ligament repair device includes a suture, a femoral side suture anchor and a threaded screw or housing implant. The screw is configured for placement in the tibia, or alternatively in the femur. A spring is housed inside an axial bore in the threaded screw. In some embodiments, the spring is a compression spring. A moveable spring button is positioned inside the axial bore adjacent a distal end of the spring. The spring button engages the spring directly in some embodiments. In alternative embodiments, an intermediate structure such as a spacer is positioned between the spring button and the spring. The suture extends between the spring button and the suture anchor. When the joint flexes or extends, the spring button travels inside the axial bore and dynamically compresses or relaxes the spring.

A distal femoral joint replacement system includes a femoral component having condylar articular surfaces, a stem extending from the femoral component, and a void filler for filling a bone void within a femur. The void filler includes a body and a plurality of legs extending from the body. The body has a sidewall defining an opening for receipt of the stem which extends along a length of the body and extends through the sidewall so as to form a side-slot in the sidewall that extends along an entire length of the sidewall. The plurality of legs each have a first end connected to the body and a second end remote from the body. The legs each have an outer surface that tapers between the first and second ends and is configured to register with a corresponding inner surface of a bone void when implanted in an end of the femur.