44 results about "Anterior superior iliac spine" patented technology

An instrument for establishing orientation of a pelvic prosthesis comprises a tri-pod having an angularly adjustable guide rod on it. The tips of the legs define a plane, and the guide rod is set by the surgeon to a defined orientation with respect to this plane on the basis of preoperative studies. In use, two of the legs of the instrument are positioned by the surgeon at defined anatomical locations on the pelvis (e.g., a point in the region of the posterior / inferior acetabulum and a point on the anterior superior iliac spine). The third leg then lands on the pelvis at a point determined by the position of the first two points, as well as by the separations between the third leg and the other two legs. The separations are adjustable, but are preferably fixed percentages of the separation between the first and second legs. The position of the guide rod then defines with respect to the actual pelvis the direction for insertion of a prosthesis.

A method is disclosed for introducing a spinal disc implant into an intervertebral space of a subject. The subject is placed in a lateral position, and the anterior face of the spinal disc intervertebral space is accessed, between the L5 and S1 vertebrae, from an anterior and lateral retroperitoneal approach. An operative corridor to the anterior face of the spinal disc space is established by introducing a retractor instrument anterolaterally to the spinal disc space between the anterior superior iliac spine and the anterior inferior iliac spine. The damaged spinal disc contents are removed from the intervertebral space through the operative corridor, and the implant is advanced into the intervertebral space at an oblique angle and pivoted to position the implant substantially laterally within the intervertebral space. Elongated retractor and insertion instruments, as well as a modified disc implant, are also disclosed for carrying out the method.

Lower underwear to be put on a body for intimate contact therewith for the purpose of correcting distortion of the pelvis. The lower underwear is provided with a tightening band passing a right pubis proximity portion, a right anterior superior iliac spine proximity portion, a sacrum proximity portion, a left anterior superior iliac spine proximity portion and a left pubis proximity portion in this order when the lower underwear is put on the body. The lower underwear provided with such a band is capable of gradually correcting distortion of the pelvis and the like by tightening the pelvis without applying pressure on the abdomen.

The present invention provides a device (1) for patient body positioning and immobilizing has four pressing pieces (41-44) for immobilizing the lumbar region of a patient (P) in lateral decubitus position on a table (B). The first pressing piece (41) and the second pressing piece (42) are arranged in a position corresponding to the anterior superior iliac spine (AS) of the patient (P). The third pressing piece (43) is arranged in a position corresponding to the pubic symphysis (PS) of the patient (P). The fourth pressing piece (44) pushes against the back surface of the lumbar region of the patient (P). The plane (P2) containing each of the pressing planes (F1-F3) of the first, second and third pressing pieces (41-43) is parallel to the patient (P)'s pelvic floor reference plane (P1). An angle indicator (6) is attached to a stand (30) supporting the first, second and third pressing pieces (41-43). The angle indicator (6) has an indicating rod (63). A first angle ([Theta]1) and a secondangle ([Theta]2) specifying the orientation of the indicating rod (63) with respect to the pelvic floor reference plane (P1) can be each regulated with a first angle regulator (61) and a second angleregulator (62). During a hip replacement arthroplasty, a rod (R) of a surgical instrument (OT) is held parallel with the indicating rod (63), and a cup (CP) is inserted in the patient (P)'s acetabulum using the surgical instrument (OT).

The invention relates to an external fixing device of the pelvis at the lateral position in artificial hip-joint replacement, comprising a flat plate, a sliding plate, an operating arm, a sacrum fixing plate, an operating bed connecting and fixing piece, an anterior superior iliac spine fixing piece, a guide needle, a universal rotating shaft, a universal shaft seat and a fixed piece. A working method of the external fixing device of the pelvis at the lateral position in the artificial hip-joint replacement comprises the following detailed steps: (1) the device is fixed with the operating bed to lead a human body to be in the lateral position; (2) the sliding plate is adjusted to drive the anterior superior iliac spine fixing piece; (3) the anterior superior iliac spine fixing piece is adjusted; (4) a vertical needle body is parallel to the connecting line of the anterior superior iliac spines at the two sides, an inclined needle body expands outwards by 45 degrees, and inclines forwards by 15-20 degrees; and (5) an acetabulum placer is parallel to the inclined needle body. The external fixing device has the advantages that (1) the angle design of the inclined needle body in the two-in-one guide needle ensures the accuracy of the operation; (2) the accuracy, the firmness and the reliability of the pelvis fixing are ensured; (3) the operation is convenient; and (4) the wound is avoided.

The invention relates to a femur extramedullary positioning device for knee joint replacement, characterized in that the positioning device includes an anterior superior iliac spine fixation arch (1), a first connecting rod (2), and the first connecting rod (1) It is vertically connected to the fixed arch of the anterior superior iliac spine (1), the other end of the first connecting rod is connected to the osteotomy positioner (3), the positioning device also includes a measuring rod (4), and the measuring rod (4 ) is connected to the osteotomy positioner (3). The advantages of the present invention are as follows: 1) The overall structure is ingeniously designed and easy to install; 2) The technical solution adopts an accurate right-angle connection design and an osteotomy positioning instrument capable of multiple measurements to further ensure its accuracy; 3) The technical solution The handle of the osteotomy locator has complex and fine double fork, groove, scale and small hole design. The double-fork design can constrain the connecting rod in the positioner, and the size is matched to ensure that it is parallel to the connecting rod in the coronal position.

The invention discloses a stationary fixture for pelvis biomechanics experiment. The fixture is connected to a mechanical testing machine by a base. A first anterior superior iliac spine baffle and a second anterior superior iliac spine baffle of the fixture are respectively connected to a pubic tubercle baffle by a first sacrum stationary jaw and a second sacrum stationary jaw. A top tray of upper margin of pubic bone and a bottom board of lower margin of pubic bone are respectively vertically connected to the pubic tubercle baffle. The first sacrum stationary jaw and the second sacrum stationary jaw are connected to the top tray of upper margin of pubic bone. A sacrum fixing cross slab is fixed on the first sacrum stationary jaw and the second sacrum stationary jaw. A connecting rod is arranged on the lower surface of the top tray of upper margin of pubic bone. A back head of pubic bone is horizontally connected to the connecting rod. The lower head of pubic bone is vertically drilled through the bottom board of lower margin of pubic bone. With the fixture of the invention, the pelvis can be fixed by taking a standing posture to do experiment, and the substance of bone and the structure of pelvic are not destroyed by assembling or detaching the fixture.