400 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.

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 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.

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.

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.

The invention provides an orthopaedic implantation post-operation X-ray film simulation method and system based on a preoperative CT image, a medium, a program product and a terminal, and aims to accurately convert and present results of three-dimensional segmentation, key point identification and prosthesis positioning based on preoperative CT into a standard post-operation X-ray film simulation effect conforming to clinical routine. A doctor can intuitively and clearly foresee the form projection and the specific spatial position of selected prostheses including an acetabular cup, a lining, a ball head, a femoral stem and the like on a post-operation standard orthotopic X-ray film and the accurate relative anatomical relation between the prostheses and key bony markers of the pelvis and the femur in the pre-operation planning stage. By providing an intuitive and quantitative post-operation X-ray film simulation effect, a doctor is effectively assisted in selecting an optimal operation scheme and adjusting setting of parameters such as the size, the position and the angle of an implant, the predictability and the accuracy of operation planning are improved, and dependence on pure experience is reduced.

An apparatus and method for inserting a femoral broach or femoral stem or acetabular cup into a bone. The apparatus includes at least one closed loop insertion mechanism to provide impacts on the associated handles of the broach, stem, or the acetabular cup; at least one sensor to sense a series of impacts, including impact angle, and to provide real-time feedback of the alignment and / or condition of the bone; and a processor operably connected to the at least one sensor. The processor includes an algorithm that receives the real-time feedback to control the force, frequency, and alignment of the impacts by the at least one closed loop insertion mechanism.

Bone and joint surface reconstruction methods are disclosed for the therapeutic amelioration of joint defects caused by various conditions, injuries, and diseases to help eliminate or reduce pain and return the joint to its proper bio-mechanical function without the need to replace fully or partially the anatomical joint. The joint may specifically include mammalian joints such as the femorotibial joint, for example. The methods disclosed herein leverage the significant role the subchondral bone plays in the health status of the afflicted joint.

The present application relates to femoral stem prosthesis, specifically provides a femoral stem prosthesis with twisted trabecular structure, aims to solve the problem that although the existing femoral stem prosthesis has trabecular porous structure to promote bone growth, but still due to the high material elastic modulus and stress concentration inside the pore, leading to stress shielding effect and trabecular fracture, so it is difficult to effectively prevent long-term loosening of the prosthesis. For this purpose, a femoral stem prosthesis with twisted trabecular structure of the present application comprises a trabecular structure unit arranged on the surface layer of the prosthesis, the shape of the trabecular structure unit is a space net structure, the space net structure is provided with pores, the pores can accommodate new bone, and the space net structure is twisted from the inside of the prosthesis to the surface layer of the prosthesis. The present application introduces the mechanical regulation effect brought by structure twisting by arranging the space net trabecular structure which is twisted continuously from inside to outside on the surface layer of the prosthesis, on the basis of ensuring that the pores can be used for new bone growth and realizing bone-prosthesis biological fixation.

To provide a sleeve for a prosthetic implant having an anatomical profile.SOLUTION: The invention relates to: a sleeve (10) for a prosthetic implant (100) implantable in bone such as a femur; and related modular prosthetic assembly (200) including at least a rod (110), an intermediate neck component (112) and a sleeve (10).SELECTED DRAWING: Figure 1

A device for forcefully inserting a surgical implant in a recipient bone by impaction, comprising an impactor (10) that exerts an impaction force on the implant and is associated with at least one sensor (12). The sensor (12) measures a value from among the exerted impaction force and the deformation of the impactor (10) and provides a measurement signal representing the temporal variation of said value during an impact. The sensor (12) is connected to a processing unit (30) that is configured to compute, on the basis of the temporal variation of said value during the impact, an indicator representing the level of contact between the implant and the recipient bone. The indicator corresponds to the duration separating the instant corresponding to the first maximum amplitude peak of the measurement signal from the instant corresponding to the second maximum amplitude peak of the measurement signal. The implant can be a femoral rod (2).

The present invention provides a proximal femoral cancellous bone harvesting and implanting device, belonging to the field of medical device technology. The device comprises a femoral head X and a cancellous bone harvesting region Y at the distal end of the femoral head. The device comprises an outer tube, the outer tube comprising a lower sleeve and an upper sleeve, a connecting mechanism being provided between the lower sleeve and the upper sleeve, the connecting mechanism enabling an adjustable angle between the lower sleeve and the upper sleeve, the central axis of the lower sleeve being arranged along the bone harvesting region Y toward the femoral head X, the lower sleeve being implanted into the femoral body to establish a bone harvesting and implanting channel, the lower sleeve, the upper sleeve, the inner tube, and the connecting mechanism being provided in the present invention cooperating with each other to achieve bone harvesting and implanting operations, eliminating the need to replace instruments during the bone harvesting and implanting processes, and facilitating operation. Specifically, the inner tube can be simultaneously passed through the upper sleeve and the socket member to reach the bone harvesting region Y for bone harvesting, or the inner tube can be simultaneously passed through the lower sleeve and the upper sleeve to reach the interior of the femoral head X for bone implanting.

The utility model provides a femoral stem, and relates to the field of passive medical instruments. Comprising a femoral stem conical part, a femoral stem neck part, a femoral stem shoulder part and a stem body, one end of the femoral stem neck part is connected with the stem body through the femoral stem shoulder part, and the other end of the femoral stem neck part is connected with the femoral stem conical part; at least two first protrusions are evenly arranged on the handle body and around the circumference of the handle body, the length of the first protrusions is equal to that of the handle body, and a second protrusion is arranged between every two adjacent first protrusions. The femoral stem can adapt to marrow cavities of different shapes and sizes, and can better adapt to anatomical features of cortical bones and thighbones of the marrow cavities of patients.

The present disclosure provides a knee brace for preventing or mitigating injury to a user's knee. The knee brace includes a first sensor positioned with respect to a femur, and a second sensor positioned with respect to a tibia. The knee brace further includes a stiffening component configured to stabilize the user's knee, and a processor that receives sensor data from the first sensor and the second sensor to determine a relative position between the femur location and the tibia location. The processor is configured to activate the stiffening component when the relative position exceeds at least one of a first threshold, a second threshold, and a third threshold, wherein the first threshold indicates a potential over-rotation, wherein the second threshold indicates a potential over-abduction, and wherein the third threshold indicates a potential hyperextension.

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 femoral intertrochanteric fracture opening system is characterized by comprising a sleeve, a hollow sleeve core and a hollow trephine, an impact portion is arranged at one end of the sleeve, a plurality of sawteeth are arranged on the outer ring of the end of the other end of the sleeve, the inner diameter of the sleeve is the same as the outer diameter of the hollow sleeve core, a center hole is formed in the center of the hollow sleeve core, and the hollow trephine is arranged in the center hole. The sleeve is limited and fixed through the hollow sleeve core, and the hollow trephine is limited through the sleeve and the positioning guide pin, so that the accuracy of the opening position is ensured; according to the utility model, the trephine is used for opening, the force is uniform when the trephine is used for opening, and the outer surface of the trephine does not have the situation that the size of the outer surface of a conical drill is always changed, so that the situation that bone blocks on two sides of a fracture line are extruded in the opening process is avoided, and the serious defect that the bone can be extruded open by a traditional drill bit is overcome.

The invention relates to the technical field of surgical measurement, in particular to a real-time measurement method and system for the length and eccentric distance of lower limbs in hip replacement. According to the technical scheme, the method comprises the following steps that anatomical feature points on the two sides of a patient are obtained, wherein the anatomical feature points at least comprise the positions of anterior superior iliac spines on the two sides and the positions of high points on the inner side and the outer side of ankle joints on the two sides; and according to the obtained anatomical feature points, calculating and establishing a normal position reference plane of the patient. By means of the non-invasive body surface positioning and optical tracking technology, the length and the eccentric distance of the lower limb can be accurately measured in real time in the hip replacement. The method comprehensively considers the change of both sides of the acetabulum and the femur, avoids the trauma risk of traditional invasive navigation and the deviation of single measurement, and provides a quantitative basis for doctors through intraoperative dynamic data feedback and preoperative, intraoperative and postoperative whole-course evaluation, thereby improving the surgical precision and reducing the occurrence rate of complications with unequal lengths of lower limbs.

Bone plates are disclosed for veterinary uses, for instance for performing distal femur repairs in canines or felines. The bone plates includes various features for better accommodating the anatomy and native tissue structure of the distal femur of an animal and may be utilized for all distal femur fracture patterns. Amongst the features, the head portion of the bone plate is positioned at an angle relative to its shaft portion and includes a curvature configured to match said distal femur; furthermore, head and shaft portions include openings extending along different trajectories.

The present invention provides a range of motion detection method for hip replacement surgery, comprising the following steps: obtaining the STL data of the femoral stem and acetabular cup after alignment from the preoperative plan as the object to be detected; obtaining the rotation center of the femoral head from the preoperative plan as the center, segmenting the STL data of the femoral stem and acetabular cup that may collide, and removing the remaining parts; detecting the range of motion of the femur: constructing a coordinate system with flexion and extension as the x-axis and abduction and adduction as the y-axis, with the coordinate origin being the current position of the object to be detected; then, based on the concept of breadth traversal, starting from the coordinate origin, traversing all coordinate points and detecting whether they collide, thereby obtaining the specific range of motion of the patient's femur; and sorting the boundary queue and drawing it. This detection method improves the strategy for detecting the range of motion of the femur, reducing the time required to update the femoral range of motion boundary after data replacement; and drawing the collision area when the current femoral range of motion collides.

There is provided a method to perform bone resection using a planer. Under guidance of a surgical navigation system, and, optionally, under command of a robotic system, a trackable surgical instrument is guided to a target pose on a target bone. The bone may be a femur or tibia in a TKA. The trackable instrument comprises a drill or a pin guide for mounting a pair of pins, preferably graduated pins to select a resection depth. A pin end is inserted into the planer and the planer operated to resect until the pin end bottoms out. A robot may command movement of the trackable instrument to the target pose. The target pose may be received or determined from surgical pre-planning or intra-operative activities such as tracked measurements, user input, etc. The navigation system presents information such as measurements and / or image overlays to guide the placement.

An apparatus to facilitate torso exercises includes a base frame, and a leg support member coupled to the base frame to rotate about a first vertical axis, supporting a user's legs during the torso exercises. A rotation mechanism is configured to allow rotation of the leg support member along the first vertical axis relative to the base frame. The leg support member includes a pair of cavities configured to accommodate tibias during the torso exercises, to enable the user to apply torque and rotation through the femurs. Further, the design of the chest support member facilitates adjustability of the chest support member in forward- backward direction, and upward-downward direction to account for different body shape and size of the user. The apparatus facilitates the user to perform exercises in a quad-pad position, by moving the chest support member out of a region occupied by the user.

A method is provided for performing a quadruped unicompartmental stifle arthroplasty. The method includes cutting a plateau of a tibia to form first cut surfaces. The method also includes cutting a medial condyle of a femur to form second cut surfaces. The method also includes aligning openings in a first trial device with the first cut surfaces and forming first holes in the first cut surfaces by passing a drill through the openings in the first trial device. The method also includes aligning openings in a second trial device with the second cut surfaces and forming second holes in the second cut surfaces by passing a drill through the openings in the second trial device. The method also includes mounting a first implant device to the first cut surfaces and mounting a second implant device to the second cut surfaces. A system is also provided for performing the method.

Femur lift (1) of an operating table (2) comprising a control device (5) for a support arm (3) mounted therein in a longitudinally adjustable position in a transverse recess (27) of an angularly pivotable control disk (6), with an end-side femur support (4) and a pivot-releasable return locking mechanism (7) made of a spring-loaded control wedge (8) which engages in a wedge gap between a functional surface (17) of the control device (5) and a convex end-face control surface (16) of the control disk (6), characterized in that the control device (5) is equipped with an adjusting device (25) which has a control slide (20) extending in front of a narrow side of the control wedge (8) and the control wedge (8) is held in a zero position out of engagement with the control surface (16),which, in an operating position with the control slide (20) moved out of contact, is engaged with the control surface (16) and allows an angular adjustment of a support arm (3) in one direction of rotation from bottom to top and locks in the opposite direction of rotation from top to bottom.