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

The invention discloses a positioning device for assisting a C-arm in fluoroscopy, a C-arm X-ray machine and a positioning method and relates to the technical field of medical equipment. The positioning device comprises a first laser assembly and a second laser assembly, wherein a laser beam emitted by the first laser assembly and a laser beam emitted by the second laser assembly are intersected at a target point, the target point is located in the intersection area of an X-ray beam when the C-arm is in the normal position and an X-ray beam when the C-arm is in the lateral position. The targetpoint is positioned through the first laser assembly and the second laser assembly, the region of interest is put at the target point, fluoroscopy imaging of the region of interest in two directionscan be realized through one-time positioning, so that the adjustment frequency of the region of interest is reduced, the working efficiency is improved, besides, the radiation quantity of the X-rays is reduced, and radiation injury of X-rays to a patient is reduced.

The invention discloses a puncturing positioning device of operation of intervertebral foramen of lumbar vertebra and a using method thereof, and belongs to the field of medical instruments. The operation puncturing positioning device comprises an operation bed fixing clamp, an upright column which is perpendicular to a bed surface is connected with the fixing clamp, the end of a cross bar is slidably connected with the upright column, the other end of the cross bar is a rotary shaft, an adjusting rotary tube is rotatably connected with the rotary shaft, a positioning tube which is perpendicular to the axial center of the rotary shaft is arranged on the side, close the end, of the adjusting rotary tube, a positioning needle is arranged in the positioning tube, a horizontal length measuringbar and a tilting length measuring bar are arranged on a rotary shaft and an adjusting rotary tube which are located on the side of the positioning tube, arc-shaped long holes which are formed in therotary direction are formed in the outer circumference of the adjusting rotary tube, and the arc-shaped long holes move along the horizontal length measuring bar when the adjusting rotary tube is rotated. By means of the puncturing positioning device, the puncturing direction and angle can be accurately positioned, the operation time can be shortened, the smooth processing of the operation is ensured, the pain of a patient is relieved, and the overstrain of a doctor is reduced.

The invention discloses an in-vitro dynamic hip screw guider comprising guide needle cannulas and a guide block. The guide block is provided with a bottom edge and guide edges. The bottom edge is provided with two parallel puncture needles. The bottom edge is provided with a plurality of guide needle holes parallel to the guide edges. The guide needle cannulas are inserted into the guide needle holes. With the in-vitro dynamic hip screw guider, the positioning operation in needle passing and fixation for femoral intertrochanteric fracture and femoral neck fracture is simplified, a needle feeding point can be positioned quickly and accurately, and the needle feeding angle can be kept quickly and accurately; the guider has the advantages of avoidance of heavy wound, high cost, radiation and the like; through using the guider, the number of photographing or raying times is reduced, surgical time is shortened, surgical bleeding is less, and patients feel less pain; in addition, the guider guarantees safety and reliability of operation and is simple in structure, easy to disassemble, convenient to carry, economical, practical and suitable for final popularization and application.

The invention discloses a navigation template for vertebral pedicle locating and real-time screw path monitoring and a manufacturing method thereof. The navigation template comprises a vertebral surface attachment template body and an external vertebral pedicle template body, at least one connecting rod is arranged between the vertebral surface attachment template body and the external vertebral pedicle template body, a screw inlet area is arranged on the vertebral surface attachment template body, the vertebral surface attachment template body is obtained by thickening after needed surgical vertebral surface data are extracted, the external vertebral pedicle template body is obtained through a mirror image vertebral pedicle template, and the vertebral pedicle template is obtained by thickening after needed surgical vertebral pedicle surface data are extracted. The vertebral surface attachment template body is obtained by thickening after the needed surgical vertebral surface data are extracted, and therefore in the screw arrangement process, the navigation template is placed firmly. The external vertebral pedicle template body is obtained through the mirror image vertebral pedicle template, therefore, the position of a screw in the vertebral pedicle can be monitored in real time, and screw inlet accuracy is improved. The navigation template is suitable for the field of medical instruments.

The invention provides a minimally invasive guider for spines. The guider consists of a grid, a ruler, guider bodies, a drill bush and a puncture needle, and is used for guiding of spine puncture. Before surgery, the grid is stuck to the surface of skin; a puncture point and a puncture angle on the skin are determined by computerized tomography (CT) imaging; during the surgery, the ruler is attached to the surface of the skin, and a guider body is placed on the ruler, and the angle of the guider body can be adjusted longitudinally and transversely relative to the ruler to make a puncture direction and angle fit in with a puncture line, and thereby, the goal of puncture guiding is achieved.

The invention discloses a minimally-invasive S1 sacroiliac joint screw positioning guider which is characterized by including a sliding guide rail (1), a first positioning rod (2), a second positioning rod (3), an anterior superior spine locating sleeve rod (11), a posterior superior iliac spine sleeve rod (12), an S1 spinous process positioning needle (14), an S1 sacroiliac screw sleeve (7), a first guide buckle (4) and a second guide buckle (5). The positioning guider is universal and easy to operate and control, positioning is achieved through constant rules between bone landmarks, the positioning guider does not change along with postures in operations, operation time is reduced, fluoroscopy times are reduced, and learning curves are reduced.

The invention discloses a portable puncture outfit. The portable puncture outfit comprises a target, a working sheath, a puncture needle and a handle; the working sheath is of a hollow structure; thepuncture needle comprises a needle base, a needle tube, a lining core and a limiting block; one end of the lining core is fixedly connected with the bottom end of the limiting block, and the other endof the lining core is embedded into the working sheath and is in threaded connection with the working sheath; the top end of the limiting block is detachably connected with the needle base; the top end of the needle tube is fixedly connected with the needle base, and the bottom end of the needle tube penetrates through the limiting block, the lining core and the working sheath and extends out ofthe working sheath; the lining core rotates along the inner wall of the working sheath in a threaded mode and can limit the length of the portion, extending out of the outer end of the working sheath,of the needle tube; the handle is fixed under the working sheath; and the target is fixed right above the working sheath. The puncture needle is convenient to disinfect and clean, puncture deviationor slipping is prevented, and the accuracy and safety of a puncture operation can be effectively improved.

The invention discloses a three-dimensional adjustable nail locking guider for a long intramedullary nail. Three-dimensional deformation of a far end of the long intramedullary nail is decomposed intodeformation in two planes perpendicular to each other to be solved step by step. The deformation of the intramedullary nail is the displacement of a far-end nail locking hole; the displacement of thenail locking hole in one plane realizes re-accurate aiming of a guide hole and the nail locking hole through hinged rotation of a fixed guide arm and an adjusting guide arm, and accurate aiming in the plane is realized by adjusting the distance and the direction between the guide hole and the corresponding nail locking hole in the other plane; when the two planes correspond to each other, all theguide holes can be accurately aimed; according to the three-dimensional adjustable nail locking guider for the long intramedullary nail, accurate nail locking can be achieved, the problem that nail locking of the intramedullary nail is difficult is solved, the operation time can be shortened, radiation of X-rays to a patient and a doctor is reduced, bleeding is reduced, the infection proportion is reduced, and rehabilitation of the patient is facilitated.

The invention discloses a phalangeal fracture kirschner wire internal fixation guider and a using method thereof. The guider comprises a hollow guide needle, a direction pointer and a handle. The direction pointer parallel to the hollow guide needle is arranged above the hollow guide needle, and the direction pointer and the handle are both connected with a guide needle body through sleeves and can rotate around the longitudinal axis of the guide needle. The phalangeal fracture kirschner wire internal fixation guider is simple in structure, convenient to manufacture and low in cost. A kirschner wire can stably drill holes in the smooth inner wall of a finger marrow cavity through a slop at the far end of the hollow guide needle; meanwhile, the outlet position of the kirschner wire can be judged before kirschner wire is threaded, and soft tissue damage caused by multiple times of needle threading can be avoided. The one-time needle threading success rate can be increased, damage of X rays to the bodies of a doctor and a patient in an operation can be relieved, and dependence on the physical strength and experience of the doctor is reduced.

The invention discloses a locating guide plate for spine fluoroscopy. The locating guide plate comprises a guide plate body and stabilizing assemblies, wherein one side of the guide plate body is provided with an attaching locating face corresponding to the shape of the spine of a surgery patient, the attaching locating face is obtained by carrying out curved surface fitting according to the spinefluoroscopy data of the surgery patient, a vertebra line chart is marked on the guide plate body according to the spine fluoroscopy data of the surgery patient, and different symbols are used for marking the vertebra lines, so that the vertebra lines can be distinguished; the surgical incision position is marked on the guide plate body according to the spine fluoroscopy data; the stabilizing assemblies are arranged on two sides of the guide plate body, and are fixedly connected with the guide plate body in a detachable manner, so that the guide plate body can be stabilized. With the locatingguide plate for spine fluoroscopy, the accuracy of the surgery can be improved, the times of fluoroscopy in the surgery is reduced, and radiation is reduced.

The invention provides a percutaneous vertebroplasty (PVP) operating system capable of bilaterally injecting bone cement at the same time. The system comprises a puncture needle 1, a puncture needle 2, a connection pipe 3, a connection pipe 4, a three-way device 5 and a conveyor 6, the puncture needle 1 is connected with the connection pipe 3, the puncture needle 2 is connected with the connection pipe 4, the other end of the connection pipe 3 and the other end of the connection pipe 4 are connected with two ends of the three-way device 5, and the conveyor 6 is connected with the other end of the three-way device 5, wherein the three-way device 5 is provided with a switch 7.

The present invention provides a method and device for treating scaphoid fracture in the medical technology field, comprising the following steps: fixing the wrist joint in dorsiflexion position with a wrist fixation seat, determining trapezoid-scaphoid tubercle and marking ; Connect the sterilized auxiliary treatment device to the wrist fixation seat; make a 1cm transverse incision at the skin mark, separate the subcutaneous tissue until the scaphoid joint space; The guide sleeve pierces the surface of the distal pole of the scaphoid to lock the device; adjust the angle of the guide sleeve; use fluoroscopy to determine the direction of the sleeve, and confirm that the guide pin is inserted correctly; drive the anti-rotation Kirschner wire along the guide pin, remove Auxiliary treatment device; drill the guide pin into the distal end of the radius, and use a hollow drill to drill through the guide pin; double-ended compression screws pass through the guide pin and screw into the scaphoid; confirm the screw position again by fluoroscopy, and pull out the anti-rotation Kirschner wire , stop bleeding and suture the wound; the invention ensures accurate needle insertion and reduces the number of times of needle insertion and perspective.

The invention discloses a scaphoid Kirschner wire guiding device and a use method thereof. The wrist joint is fixed in a fully stretching position, an ulnar inclination position and a thumb fixation retraction position through a wrist and palm fixing support so that a Kirschner wire can be placed from a scaphoid nodule easily; the wrist and palm fixing support is fixed through a fixing belt, and an inverted regular frustum type Kirschner wire positioning guiding plate is fixed on the front side of a wrist support of the wrist and palm fixing support through a fixing belt; the inverted regular frustum type Kirschner wire positioning guiding plate comprises an upper-layer porous plate, a lower-layer porous plate and a connecting rod between the two porous plates, the area of the upper-layer porous plate is large, the area of the lower-layer porous plate is small, the two porous plates are square, the two porous plates are connected through the connecting rod and then are in an inverted frustum shape, and round holes in the uniform size are uniformly formed in the two layers of porous plates. It is guaranteed that the Kirschner wire can be accurately placed in, the puncture frequency the Kirschner wire in the scaphoid is low, the damage to blood supply in the scaphoid can be effectively reduced, the fluoroscopy frequency can be reduced, and radiation hazards can be reduced.

The invention provides an intraoperative fluoroscopy laser positioner, which comprises a fixing belt, two laser emitters shaped like a Chinese character 'yi' and a power supply system; the fixing beltsleeves an X-ray receiving screen of an mobile fluoroscopy machine and comprises a non-elastic belt, an elastic belt and a pair of connecting pieces, the three parts are connected with each other, the closing of the fixing belt is achieved through the connection of the two connecting pieces, and the total length of the fixing belt is slightly smaller than the circumference of the X-ray receivingscreen of the mobile fluoroscopy machine; the two laser emitters are arranged on the fixing belt, and the distance between the two laser emitters is 1/4 of the circumference of the X-ray receiving screen of the mobile fluoroscopy machine, so that a laser cross point is positioned at the central point of an X-ray emitting bulb tube of the mobile fluoroscopy machine; and the power supply system is connected with the laser emitters to supply power for the laser emitters. The positioner can be directly installed on a prior fluoroscopy machine, the fluoroscopy center point of the fluoroscopy machine is formed through the laser positioner, and the fluoroscopy center of the fluoroscopy machine can be accurately positioned.