59 results about "Iliac bone" patented technology

An acetabular prosthesis having an outer member for engaging the acetabulum. The outer member has a part-spherical bearing surface terminating in a distal rim. The rim has a contour such that the portion thereof to be located between the ischium and the pubis extends distally further from an equator of the bearing surface than the contour to be implanted between the pubis and the illium and between the ischium and the illium.

Procedures for the fusion of the sacroiliac joint advantageously make use of an implant selected to distract the joint upon insertion and to maintain or increase tension upon insertion. The implant can have a varying structure along its length. In some method described herein for fusing the sacroiliac joint using an implant, an implant is screwed into the sacroiliac joint between the sacrum bone and the iliac bone. The implant comprises a shaft, a tool engagement flange at top end of the shaft, a pointed tip comprising no more than about 20 percent of the length of the screw, and threads spiraling around the shaft. For screws of particular interest, the volume displacement perpendicular to the shaft increases at least about 5 percent from a point adjacent the tip to a point near the top of the shaft. Some of the desirable screw designs can be used in other orthopedic application, especially situations involving varying bone hardness. Useful filler material can be formed from a blend of bone powder and bioactive agents.

A modular implant system and method for dynamic stabilization of a spine segment that can be implanted in a minimally invasive posterior approach. In one embodiment, the implant device has an inferior body portion configured for fixation in a sacrum or ilium and a superior body portion configured for engaging one or more spinous processes to limit extension and optionally flexion while off-loading a spine segment. The implant system can be configured to stabilize a spine segment, re-distribute loads with the spine segment and still allow spine lateral bending and torsion. Besides being far less invasive than other procedures, the system and method is reversible and adjustable post-implant.

An endoluminal prosthesis includes two stent grafts with a flexible bridge extending between and connected to the stent grafts. The prosthesis can be part of a prosthesis assembly for treatment of branched vascular systems and can function as an interconnected leg extension prosthesis in combination with a main bifurcated prosthesis. In treating abdominal aortic aneurysms, the prosthesis can be deployed within both iliac arteries.

Disclosed is a method and apparatus for treating bifurcations of the vascular system, such as abdominal aneurysms at the bifurcation of the aorta and iliac arteries. A tubular implant having a first section, a second section and a magnetic connection therebetween is positioned across the bifurcation such that the proximal ends of the first and second sections extends into a first iliac and a second iliac respectively. Deployment catheters are also disclosed.

A heart rate monitoring system for use in sport and fitness training that includes a sensor belt worn on the waist of the user and a display device worn on the wrist of the user. The sensor belt has a pair of sensors that can be located on opposite sides of the body in various locations, such as near the kidneys, near the ilium bones in the pelvis, or on the front abdominal area of the user. Various signal processing techniques are employed to extract the degraded signal that is available at the waist area as compared to the chest area. These signal-processing techniques include bandpass filtering, an adaptive time window, a delayed transmission to allow for correction methods such as missed beat replacement and extra beat deletion, a lead off detection and adjustment algorithm, automatically adjustable gain control, and waveform detection and characterization.

The present invention provides a sacral-iliac plate having an iliac portion with a first screw hole for receiving a first fastener to secure the iliac portion to the iliac bone. A sacral portion integrated monolithically with the iliac portion is also provided with a second and third screw holes for receiving second and third fasteners to secure the sacral portion to the sacral bone. The sacral portion also includes a tulip for receiving and securing a spinal rod.

A hip implant assembly including a spherical shaped ball and an elongated stem. An annular defining rim separates the ball from the stem and abuts, in a maximum inserting condition, over an exterior reconditioned surface of the femur and upon inserting the stem within an interior passageway formed within the femur. A cup shaped support seats the ball in a universally articulating permitting fashion via a flexible and resilient ligament which extends from the ball and is received within a recess passageway of the cup. The cup also includes a mounting surface with a central projecting portion which is in turn resistively fitted within an undercut defined recess formed in the ilium bone in communication with a base surface of the reconditioned acetabulum socket. A corresponding installation kit assists the preparation of the femur and ilium bones defining the hip joint, as well as the installation of the implant body into the upper conditioned femur end and the cup shaped and outer socket support to a reconditioned acetabulum defined in the ilium bone.

A method for automatically initializing pose for registration of 2D fluoroscopic abdominal aortic images with a 3D model of an abdominal aorta includes detecting a 2D iliac bifurcation and a 2D renal artery bifurcation from a sequence of 2D fluoroscopic abdominal aortic images, detecting a spinal centerline in a 2D fluoroscopic spine image, providing a 3D iliac bifurcation and a 3D renal artery bifurcation from a 3D image volume of the patient's abdomen, and a 3D spinal centerline from the 3D image volume of the patient's abdomen, and determining pose parameters {x, y, z, θ}, where (x, y) denotes the translation on a table plane, z denotes a depth of the table, and θ is a rotation about the z axis, by minimizing a cost function of the 2D and 3D iliac bifurcations, the 2D and 3D renal artery bifurcation, and the 2D and 3D spinal centerlines.

A seat provides a band-like support for the body sides of a user so as to reduce the supporting pressure on the user's lumbar and to hold the user's upper body stably. In this seat, the center of a load to be received in regions symmetrically divided to a vertical central line of the seat are positioned outside of a back region defined by left and right angulus inferior scapulae and by the upper ends of iliac bones. Moreover, the load ratios in the individual regions are not more than 25% in the region corresponding to a region extended downward from the back region.

The invention relates to a cotyloid component of a hip prosthesis, said cotyloid component being hollow and in the form of a cup whose outer part has a thread allowing it to be fixed in the iliac bone, said thread being a discontinuous self-cutting double thread (20, 21), and said cotyloid component having a flattened upper pole (1), a coating that promotes osseointegration on its outer face (10), and a concave, substantially hemispherical and polished inner surface (11), characterized in that: (a) the pitch of the threads (20, 21) decreases from the upper pole (1) towards the equatorial periphery (3) of the cotyloid component, (b) the thicknesses of the threads (20, 21) increase from the upper pole (1) of the cotyloid component towards its periphery (3), (c) the crest of the threads (20, 21) is sharp towards the pole (1) of the cotyloid component and rounded or substantially trapezoidal towards the equatorial periphery (3) of the cotyloid component.

The invention discloses a spinal motion segment in-vivo loading device, which relates to the technical field of medical equipment, and comprises a first loading plate, a second loading plate, a sliding mechanism and a driving device, the first loading plate is provided with a first mounting seat for mounting a kirschner wire, the second loading plate is provided with a second mounting seat for mounting the kirschner wire, the first loading plate and the second loading plate are slidably connected through a sliding mechanism, and the driving device is used for driving the first loading plate and the second loading plate to be close to each other. During use, the kirschner wire on the first mounting seat penetrates through the upper section of the spine, the kirschner wire on the second mounting seat penetrates through the lower section of the spine, the first mounting seat and the second mounting seat are driven by the driving device to get close to each other, and axial loading can be performed on the spine; and therefore, a researcher can complete the research on the specific relation between the mechanical load and the iliac bone mass, the structure and the mechanical property.

The invention discloses a measurement system of an acetabular bone coverage degree based on an ultrasonic image. The measurement system comprises a pre-processing module, an edge detection module, an analysis processing module and a coverage degree measurement module. A measurement method comprises the following steps: S1, carrying out detail enhancement processing; S2, carrying out outline completion processing; S3, carrying out image analysis processing; and S4, measuring a coverage ratio. According to the measurement system and the measurement method, the obtained ultrasonic image is subjected to the detail enhancement processing and the outline completion processing; then an iliac bone A, a round outermost side edge point B of a femoral head, an outermost edge point C of an inner side of an acetabular bone, a base line D, a femoral head reference line and an acetabular bone reference line are determined; and finally, the acetabular bone coverage ratio R is calculated by utilizing a vertical distance L1 between the round outermost side edge point B of the femoral head and the base line D, and a vertical distance L2 between the outermost edge point C of the inner side of the acetabular bone and the base line D. The measurement system and the measurement method have relatively low requirements on the skill level of an operation way and the definition of the image, so that the measurement speed is relatively high and errors are not easy to occur.

The invention relates to an endoprosthesis for part of the pelvis having at least one base element which can be secured to a resected iliac bone and at least one hip shell attachable at a spacing thereto, with the base element having a first neck which in particular projects at an angle α from the orthogonal to a planar connection surface and the hip shell having a second neck which in particular projects at an angle β from its polar axis, with at least one separate intermediate element being provided which can be installed between the first neck and the second neck.

The invention belongs to the technical field of medical instruments and apparatuses, and particularly relates to a combined individual sacroiliac joint screw navigation template and a manufacturing method. The template is characterized in that the navigation template is provided with a sleeve base, a positioning needle sleeve and a base, the positioning needle sleeve is provided with an outer sleeve and an inner sleeve, a guiding hole is formed in the sleeve base, the sleeve base is hollow, and the sleeve base is arranged in the guiding hole and is fixedly connected with the base into a whole;the outer sleeve is connected with the sleeve base, and the base completely fits the posterior superior iliac spine and adjacent partial iliac bone outer plates in shape; a screw through hole is formed inside the outer sleeve for penetrating through the inner sleeve or the hollow screw therein; a kirschner wire through hole is formed inside the inner sleeve for penetrating through a positioning kirschner wire, the bone restoration effect is good, and skin incision and hemorrhage during operation can be obviously reduced compared with a traditional integrated guiding plate.

The invention discloses a sacrum and pelvis combined prosthesis, which comprises a sacroiliac fixation part, a connecting rod and a mortar cup assembly. The sacroiliac fixation part is detachably connected with one end of the connecting rod, and the mortar cup assembly is detachably connected with the other end of the connecting rod. A sacroiliac fixation member includes a spinal fixation assemblyand an iliac bone fixation assembly, a side of the spinal fixation assembly and the spinal fixation is provided with a first spike structure, a first screw hole and a first growth hole, screws passing through the first spike structure and the first screw hole are used for fixing the spinal column, the first growth hole is used for bone growth penetration, the side of the iliac bone fixation assembly and the iliac bone fixation is provided with a second spike structure, a second screw hole and a second growth hole, the second spike structure and screws passing through the second screw hole areused for fixation of the iliac bone, and the second growth hole is used for bone growth penetration. The prosthesis of the invention can be used for reconstruction after total sacrum and semi-pelvichip joint resection, and has great significance.

The invention provides a pelvic filling prosthesis, wherein the prosthesis is integrally formed and arranged in a stereoscopic net shape, the stereoscopic net shape outer surface of the prosthesis isa curved surface shape, the curved surface shape adopts a copying design of an anatomical structure, and the prosthesis comprises an acetabular outer cup, an iliac bone connection part, a pubic bone connection part and an ischium connection part; and the prosthesis comprises an acetabular outer cup, an iliac bone connection part and an ischium connection part. An iliac bone connection part, a pubic bone connection part and an ischium connection part are arrange on that periphery of the acetabular outer cup, the out end of the iliac bone connection part is connected with the iliac bone cuttingsurface of the pelvis, the outer end of the pubic bone connection part is connecte with the pubic bone cutting surface of the pelvis, and the outer end of the ischium connection part is connected withthe ischium cutting surface of the pelvis. The prosthesis of the invention can realize free cutting, plasticity, convenient use and simple operation, and greatly reduces the difficulty of operation.

The invention discloses a tool for maintaining a needling point of a sacroiliac screw guide needle and regulating direction. The tool comprises a grinding drill, a sleeve, a sleeve fixer and a diamond point bit, wherein a working surface of a drill bit at the lower end of a grinding drill rod is an arc surface; the diamond point bit is inserted into a guide needle passage in the center of the grinding drill; a fixing wing clamp arranged on the drill rod of the grinding drill is locked into a locking slot in the drill rod of the grinding drill; the drill tip extends out of the drill bit of the grinding drill; the sleeve consists of two semicircular cylinders; the upper end of the sleeve is connected to the lower end of the sleeve fixer by screw threads; the center of the sleeve fixer is provided with a pipe cavity through which the drill rod of the grinding drill can pass; a fixing bolt is arranged on the wall of the pipe cavity and is used for fixing the sleeve on the drill rod of the grinding drill. The tool disclosed by the invention integrates the functions of maintaining the needling point of the screw guide needle and regulating the direction of the guide needle; a power drill is used for driving the grinding drill and the diamond point bit to rotate; an arc-surface opening is drilled in an iliac bone outer plate, and then the sleeve fixer, the sleeve and the diamond point bit are taken down; the directions of the drill rod of the grinding drill and the guide needle passage are regulated by motion of the drill bit of the grinding drill in the arc-surface opening.

The invention discloses a bone marrow puncture needle for hematology department, including a puncture needle, a positioning assembly for positioning a puncture needle, a force applying assembly mounted on the positioning assembly for driving a puncture needle into a patient and an auxiliary member for assisting the puncture needle in removing bone marrow. The positioning assembly includes a fixture, the fixing piece comprises a fixing plate made of hard material and a silica gel bonding part fixed on the bottom of the fixing plate, which solves the problems that the bone puncture needle is inaccurate in orientation when puncturing, is easy to slide into the iliac bone side, can not enter the bone marrow cavity, or penetrates into the bone marrow cavity and then penetrates out of the bone marrow cavity.