67results about How to "Reduce the number of perspectives" patented technology

The invention discloses a femoral neck fracture fixing device. The femoral neck fracture fixing device comprises side steel plates, three sleeves, three head nails matched with the sleeves and at least one cortical bone locking screw. The inner surfaces of the side steel plates are matched with the anatomic form of the near-end outer side wall of the thigh bone. The head side of each side steel plate is provided with three conical threaded locking holes, and the tail side of locking the steel plates is provided with at least one cortical bone locking screw. The sleeves of hollow structures. The tail portions of the sleeves are matched with the conical threaded locking holes. The cortical bone locking screws are matched with cortical bone locking screw locking holes. The femoral neck fracture fixing device produces small wounds and is good in fixing effect, simple in operation and accurate in positioning.

The invention relates to a movable three-dimensional rocker arc-shaped guide spinal puncture assistor, which comprises a ground movable support part, a three-dimensional rocker regulating part and an arc-shaped angle guide puncture part, wherein bottom feet of the ground movable support part are rolling wheels with brakes; a vertical rod which is sleeved by a round tube and is used for maintaining the integral balance is arranged above the ground movable support part; the three-dimensional rocker regulating part is of a three-dimensional regulating structure consisting of three rockers with screw threads and three extension rods, and also comprises a horizontal calibrator and a horizontal locking spanner; the arc-shaped angle guide puncture part comprises a 1 / 4 circular-arc rail with an angle, a rocker, two infrared fixed point instruments, a guide rod and a needle guide device; the rocker can realize 360-degree vertical rotation through regulating the circular-arc rail; the guide rail slides along the circular-arc rail; and the needle guide device can be dismounted for disinfection. The movable three-dimensional rocker arc-shaped guide spinal puncture assistor has the advantages that the puncture accuracy is high; the perspective time is short; the number of perspective times is small; the quantity of X-ray radiation received by medical care personnel and patients is low; the needle guide device can be disinfected and repeatedly used; and high molecular materials are radiotransparent, and the like. Therefore the movable three-dimensional rocker arc-shaped guide spinal puncture assistor can be widely applied to spinal surgeries such as intervertebral aperture mirror positioning puncture, epidural anesthesia, spinal tumor biopsy and spinal abscess puncture drainage.

The invention relates to a pedicle screw, which comprises a screw connecting part and a U-shaped connecting part, wherein the U-shaped connecting part is arranged on the top of the screw connecting part. The invention is characterized in that a transverse cutting track is arranged on the outer side of a groove wall of the U-shaped connecting part, and the transverse cutting track divides the U-shaped connecting part into a folding part and a locking part, wherein the folding part is positioned at the upper section and can be broken through being folded, the locking part is positioned at the lower section and is used for placing and locking a connecting rod, the groove depth of the locking part is greater than or equal to the sum of the diameter of the connecting rod and the thickness of the locking screw nut, and the inner side of the groove wall of the folding part and the inner side of the groove wall of the upper part of the locking part are provided with inner screw threads used for connecting a locking screw nut. The invention is favorable for the placement and the connection of the connecting rod.

The invention discloses an auxiliary device for intramedullary nail internal fixation, relates to the technical field of orthopedic minimally invasive surgical instruments, and solves the difficulty in positioning the nail entry point of PFNA with the existing insertion device, and the helical blade cannot be accurately inserted into the femur at one time. Problems in the neck. The auxiliary device in the intramedullary nail internal fixation operation of the present invention comprises: a positioning guide base plate and a guide wire positioning guide mechanism connected by a positioning rod assembly; The position of the inserted PFNA corresponds up and down, and the positioning guide substrate can be used to preliminarily determine the insertion position, depth, and diameter of the PFNA; the guide pin positioning guide mechanism can be used to further accurately determine the insertion position and depth of the PFNA and the helical blade; positioning The rod assembly can be used to adjust the insertion direction of the helical blade. The invention is mainly used in closed reduction and PFNA internal fixation treatment of femoral intertrochanteric fracture.

The invention provides a positioning device for the force line measuring angle of an osteotomy around a knee. The positioning device comprises an angled force line measuring rod, a fixing assembly, asupporting needle and clamping board bases; the angled force line measuring rod comprises a fixing rod, a first movable rod and a second movable rod; one surface of the fixing assembly is connected with one end of the fixing rod, the portion, located on the opposite surface of the connected surface of the fixing rod and the fixing assembly, on the fixing assembly is movably connected with one endof the first movable rod, and the other end of the first movable rod is pivoted on the second movable rod through a pivoting shaft; the supporting needle penetrates a thighbone or shin bone of a lowerlimb of a human body, and the two ends of the supporting needle are fixed onto the clamping board bases; the fixing assembly is located above the lower limb and movably connected with the clamping board bases. The device has the advantages that a product is simple to operate, convenient to use, stable and reliable; surgical time is shortened, the precision of osteotomy orthopaedics is improved, and the number of times of fluoroscopy and the radiant quantity are greatly reduced, so that it is avoided that the patient and doctors receive too much radiation, so that physical health is affected.

The invention discloses a minimally invasive S1 sacroiliac joint screw positioning guide, which is characterized in that it comprises a sliding guide rail (1), a first positioning rod (2), a second positioning rod (3), and an anterior superior iliac spine positioning sleeve Rod (11), Posterior Superior Iliac Spine Positioning Sleeve Rod (12), S1 Spinous Process Positioning Needle (14), S1 Sacroiliac Screw Sleeve (7), First Guide Buckle (4) and Second Guide Buckle ( 5). It is universal, easy to operate and easy to master. It uses the constant law between bony landmarks to locate, does not change with the change of body position during operation, reduces operation time, reduces the number of perspectives, and reduces the learning curve.