122results about How to "Improve puncture accuracy" patented technology

The invention discloses a safety venous indwelling needle with a needleless interface positive-pressure closing valve, comprising a puncture needle, a puncture needle seat and a handle, wherein, the puncture needle is formed into a puncture needle protection assembly by a puncture protection sleeve, a spring, a plunger latch and an escapement clamp; a venous indwelling needle is formed by an indwelling needle soft tube, a puncture needle guide tube, an indwelling needle seat and a sealing plug; a needless interface positive-pressure closing valve is formed by a shell, a piston, a seal ring, a spring, a connecting soft tube and a base; the positive-pressure closing valve and a liquid out plug separated structure do not involve the indwelling needle, are easy to operate, can reduce pain, and avoid the indwelling needle from taking off; the puncture needle protection sleeve can protect the puncture needle before and after the use of the indwelling needle, has the advantages of without added length, small and exquisite volume, good hand feel, accurate control, high puncture precision, and convenience for puncture operation and the like, can automatically retract to protect the puncture needle, can avoid acupuncture injury on medical workers, has positive pressure closing function, can prevent venous blood flowing back and overflowing, prevent blood from being polluted and avoid the blood from forming blocking in the indwelling needle, does not need heparin tube closing and other operation, has needless connection function, and can avoid needle injury, improve working efficiency and protect the safety of medical workers and patients.

The invention discloses a three-dimensional positioning and guiding device for penetrating a vertebral pedicle through skin. The three-dimensional positioning and guiding device for penetrating the vertebral pedicle through the skin comprises a base, dip angle measuring devices and a measuring device supporting rod, wherein guiding grooves are arranged in length wise frame edges of the base, two dip angle measuring devices are matched on the measuring device supporting rod in a sliding mode, and an arc-shaped guiding groove is arranged in each dip angle measuring device. A bar-shaped hole is arranged in the measuring device supporting rod, a puncture needle guiding tube is in hinge joint with the dip angle measuring devices, and the puncture needle guiding tube penetrates through the bar-shaped hole. A guiding pin is arranged on the puncture needle guiding tube and is matched with the arc-shaped guiding grooves, marking needle fixing holes are arranged in the middle portion of the measuring device supporting rod, and two ends of the measuring device supporting rod are cylindrical segments. The measuring device supporting rod is matched with the guiding grooves in a sliding mode through sliding blocks, the cylindrical segments of the measuring device supporting rod extend out of the sliding blocks and are connected with a positioning rod, and the positioning rod is in the same plane with the measuring device supporting rod and the puncture needle guiding tube. The three-dimensional positioning and guiding device for penetrating the vertebral pedicle through the skin is capable of three-dimensional positioning and guiding and shortening the operation time, high in efficiency, accurate in guiding and capable of improving the achievement ratio of operation.

The invention discloses an all-dimensional close-range seed implantation robot for the prostate and relates to the field of medical instruments. The robot is composed of a position adjustment mechanism, a cross joint gesture adjustment mechanism, an ultrasonic image navigation module, a seed implantation module and an operation table cart; by controlling a motor, the position and gesture of an ultrasonic probe can be adjusted, feeding and rotation motion around the axis of the ultrasonic probe are achieved, and a series of sequence ultrasonic images are obtained; under guide of the ultrasonicimages, by controlling the seed implantation module, the radioactive seed implantation treatment operation for the prostate cancer is completed. According to the robot, the defects can be overcome that in the traditional seed implantation operation process, due to the fatigued operation of doctors, the positioning precision and stability of manual operation are low, and the treatment process depends on the personal experience of the doctors. The operation efficiency and seed implantation precision are improved.

The invention discloses a respiratory motion compensation method for lung percutaneous puncture. The method comprises the following steps: constructing a four-dimensional visualization model by usingpre-operative 4DCT images; extracting a respiratory movement trajectory, selecting a target point and a skin insertion point based on the four-dimensional visualization model and respiratory movementtrajectory, forming a puncture path, and determining an initial position, direction and puncture depth of a puncture needle; and during intraoperative puncture needle insertion, acquiring respiratorysignals of a patient in real time by a respiratory monitoring device, inputting the respiratory signals into a control system of a puncture robot, and analyzing characteristic parameters of the respiratory signals by the control system to guide the puncture robot to iteratively adjust the needle insertion speed to ensure that a needle tip reaches the target point at a specified time, so as to compensate for tumor displacement caused by breathing. The method provided by the invention allows puncture to be performed in a state of free breathing, has a wider application range, and helps to reducepain of the patient and improve the success rate of surgery.

The invention relates to a three-dimensional positioning guiding gauge for puncture, which consists of a master member and a suite. The master member and the suite have three edges; a face between a first edge and a second edge is a front face, and a face between the second edge and a third edge is a lateral face; the master member and the suite are divided into two symmetrical and equal ends through a zero line, and can be used bidirectionally; and the suite is sleeved on the master member, the inner face of the suite is attached to the outer face of the master member without gaps, the front face and lateral face of the suite correspond to those of the master member, and the suite can slide on the master member back and forth. The three-dimensional positioning guiding gauge is used for improving puncture success rate and accuracy and avoiding puncturing repeatedly to reduce exposure times and radiation damage; and puncture side-open distance, angle degree and puncture depth are accurate further, so that surgical doctors have the visual sense of space in the puncture operation, and the puncture success rate and accuracy are improved. The three-dimensional positioning guiding gauge is suitable for the use and reference of doctors in departments of orthopedics, spine surgery, pain treatment, intervention and neurology, and has the advantages of simple structure, convenient use and popularization, wide application and low manufacturing cost.

The invention provides a brain focus target puncture positioning method and a puncture positioning device. The puncture positioning device comprises a vertical positioning ruler, a first sliding baseand a horizontal positioning ruler, wherein the vertical positioning ruler is provided with first scales in the vertical direction; the first sliding base is vertically and slidably arranged on the vertical positioning ruler; the horizontal positioning ruler is arranged on the first sliding base. The puncture positioning method comprises the steps that a middle-line sagittal view surface of the brain of a patient is determined; brain CT scanning is carried out; CT scanning data is analyzed, and a target transverse-cutting layer image of a brain focus of the patient is determined; a middle-linesagittal image and the target transverse-cutting layer image are modeled in proportion, and simulated puncture is carried out; then solid puncture is carried out on the brain of the patient. The focus target puncture positioning method and the puncture positioning device thereof are used so that multi-point puncture positioning can be realized, the influence of human factors is eliminated, the puncture accuracy of a focus target and the success rate of an operation are improved, the operation difficulty is reduced, the operation time and the pain of the patient are reduced, and the method andthe device have high application and popularization significance.

The invention discloses an in situ fenestration instrument. The instrument comprises a puncture device, a bending-adjustable catheter and an anchoring catheter which are coaxially sleeved in sequence;the puncture device comprises a puncture push rod, a puncture needle head and a puncture handle; the bending-adjustable catheter comprises an bending-adjustment catheter body, a traction assembly anda bending-adjustment mechanism, the far end of the traction assembly is connected to the far end of the bending-adjustment catheter body, and the near end of the traction assembly is connected to thebending-adjustment mechanism; the anchoring catheter comprises a hollow anchoring catheter body and an anchoring piece arranged at the far end of the anchoring catheter body; the anchoring piece is made of an elastic material and has a contracted state and an expanded state; and the anchoring piece is axially provided with a through hole corresponding to the far end of the anchoring catheter body, and the anchoring piece is provided with at least one aperture which axially passes through the anchoring piece. According to the invention, the bending-adjustable catheter and the anchoring catheter can perform accurate positioning, ensure the puncture accuracy, and be used for retrograde in situ fenestration and antegrade in situ fenestration without influencing blood supply during fenestration.

The invention discloses an endovascular anchoring catheter. The endovascular anchoring catheter includes a hollow catheter body and an anchoring member arranged on a distal end of the catheter body. The anchoring member expands radially outward from the catheter body in a natural state. The anchoring member is provided with a through hole which is coaxial with an opening at the distal end of the catheter body. The anchoring member is provided with at least one aperture axially passing through the anchoring member. The cavity of the endovascular anchoring catheter provides an access for other instruments. An anchoring device at the distal end of the catheter can limit radial deviation of the catheter and the instruments in the catheter and does not affect normal circulation of blood of a vessel in which the endovascular anchoring catheter is placed.

The invention discloses a spinal puncture positioning method and device. The device includes a positioning ruler, an angle ruler, a correction magnet, a detachable level, and may also include a height gauge. The spinal puncture positioning method is simple and only needs to measure two The angle and depth of the puncture path can be obtained by numerical values. Based on the method, the puncture positioner has a simple structure, is convenient for production and maintenance, and is easy to operate. It can be used for real-time positioning during surgery. Convenient, quick and accurate puncture positioning, easy to re-puncture to locate the target. Small in size, easy to sterilize, high-temperature disinfection does not affect the accuracy of the instrument, does not occupy the space of the operating table, and does not pollute the operating area. Its positioning principle and design can be widely applied to various deep positioning operations in the body and the development and research of various special positioners.

The invention discloses a portable percutaneous puncture locating device and a locating method implemented via the device. The device comprises a locating frame, a rotary piece and a scale ring, wherein an arc-shaped groove is formed in one end of the locating frame, and angle scales, along the circumferential direction of the arc-shaped groove and the outer wall surface of the scale ring, are arranged on the outer wall surface of the end; the rotary piece comprises a locating end and a rotating end; the locating end of the rotary piece is overlapped with the circle center of the arc-shaped groove; a power unit, by which the locating end of the rotary piece can be driven to rotate, is arranged in the locating frame; the rotary piece can move along a radial direction of the arc-shaped groove; one end of the scale ring is connected to the rotary piece, so that a plane where the scale ring is located is perpendicular to a plane where the end of the locating frame is located; a guide blockis connected to the scale ring; a guide hole, in which a puncture needle is inserted, is formed in the guide block; and a central shaft of the guide hole points to the circle center of the arc-shapedgroove. The puncture guidance device provided by the invention is simple in structure, easy to disinfect and low in cost; and the device is simple and convenient to operate and relatively short in locating duration, and radiation quantities to a patient and operators can be reduced.

The invention provides a sacral nerve puncture guide plate and a construction method thereof. The guide plate comprises a base plate, an outer guide pipe and an inner guide pipe, wherein the outer guide pipe is arranged on the outer side face of the base plate; the inner guide pipe is coaxially arranged in the outer guide pipe; the inner guide pipe penetrates through the base plate; and the end face of the end, penetrating through the base plate, of the inner guide pipe is flush with the inner side face of the base plate. According to the sacral nerve puncture guide plate provided by the invention, the end face of the end, penetrating through the base plate, of the inner guide pipe is flush with the inner side face of the base plate, so that the tail end face of the inner guide pipe directly abuts against the skin in use and can be attached to the surface of the skin, whole-course guided puncture is achieved, and puncture errors are avoided.

The invention provides a vein vessel depth measuring device and a blood sampling machine and relates to the technical field of medical equipment. An imaging device and a control system connected with the imaging device are included. The imaging device comprises a support and a camera arranged on the support. The control system comprises an image processing module and a correction module. The image processing module comprises a foreground extraction module and a depth measuring and calculating module. The foreground extraction module is used for receiving an original target image collected by the camera and forming a foreground extraction graph of a target area. The depth measuring and calculating module receives the foreground extraction graph and obtains depth data of target subcutaneous vein vessel depth by conducting processing and calculation on the foreground extraction graph. The correction module is used for receiving the depth data and obtaining accurate depth data of the target subcutaneous vein vessel depth by conducting processing and calculation on the depth data. According to the vein vessel depth measuring device, the vein vessel depth is worked out through image processing technology, thus puncturing work can be more efficient, and the puncturing accuracy rate is increased greatly.

The invention belongs to the field of medical puncture instruments, and particularly relates to a medical puncture needle with a spiral type microstructure and a manufacturing method thereof. The femtosecond laser machining technology is adopted, femtosecond laser pulses are kept fixed in the machining process, and the spiral type microstructure is machined on the surface of the puncture needle by controlling rotation and feed movement of the puncture needle. In the puncture process of the medical puncture needle, the microstructure is organically combined with tissue fluid or lubricating agents in a punctured tissue, adsorption and storage of the lubricating agents are facilitated, generation of fluid power lubrication is facilitated, the resistance in the puncture process is effectively reduced, the puncture precision is improved, and pains brought in the puncture process are reduced.

The invention belongs to the technical field of puncture needles, and specifically relates to a novel puncture trocar and a using method thereof. The novel puncture trocar structurally comprises a sleeve, wherein the sleeve is internally connected with a hollow puncture needle of which the front end protrudes out of the sleeve in a sleeving way; the tail end of the sleeve is fixedly connected witha supporting seat; the supporting seat is connected with a movable block in a sliding and sleeving way; a transfusion channel is formed in the movable block; the tail end of the hollow puncture needle is fixedly connected with the movable block; the hollow puncture needle is correspondingly communicated with the transfusion channel; a fluid communicating pipe is arranged at one opposite side, which is connected with the hollow puncture needle, of the movable block; the fluid communicating pipe is correspondingly communicated with the transfusion channel; an actuating mechanism is also arranged above the movable block. The novel puncture trocar provided by the invention is simple in structure and is capable of completing operation by one hand; the using method of the novel puncture trocaris correspondingly provided. The operability of the puncture trocar in clinical medical treatment and biomedical experiments is remarkably increased, and practical significance is obtained.

The invention discloses a multi-angle adjustment puncture fixator based on medical image guidance. The fixator comprises a base sleeve, an adjusting plate, a gear sleeve, a rotating shaft, a gear clamping plate, a fixed seat, a screw rod, a sliding block, a positioning arc plate I, a positioning arc plate II, a sliding plate and a middle positioning plate. The invention discloses the multi-angle adjustment puncture fixator based on medical image guidance. Firstly, a combined structure is adopted, so that installation and operation are convenient; secondly, longitudinal angle and transverse angle double-adjustment guide design is adopted, rapid positioning of multiple angles and degrees of freedom can be met, puncture accuracy is improved, clinical operation is facilitated, and the problemthat an assistant is needed for fixing a puncture needle during conventional needle biopsy is solved; and finally, the distance between the positioning arc plates can be adjusted in cooperation with alead screw structure, and adaptive adjustment can be conducted according to the sizes of the head, limbs and other areas of a patient. In conclusion, the fixator is high in practicability, stable, reliable and extremely high in application and popularization value.

The invention relates to a target point puncture method, a device, a storage medium and computer equipment. obtaining a positioning image of a target object, and determining spatial position information of a target point in the positioning image; obtaining the current puncture position information of a puncture needle during a puncture process, and according to the spatial position information ofthe target point and the current puncture position information of the puncture needle, updating the display condition of the simulated image corresponding to the puncture needle in the positioning image. During the puncture process, the current puncture situation can be known in real time by updating the display condition of the simulated image of the puncture needle, X-ray exposure is not required to determine whether puncture achieves the target point tissue, while improving the puncture accuracy, the operation steps can be reduced, time is saved, and work efficiency is improved. In addition, X-ray exposure is not required on the patient again, and the amount of radiation received by the patient can be reduced.

The invention relates to the technical field of percutaneous puncture, in particular to a percutaneous puncture stereotaxic frame based on CT guidance. The percutaneous puncture stereotaxic frame includes a frame body and a puncture mechanism, wherein the frame body is a reloading mechanism; an arc-shaped first chute is formed in the frame body; a first sliding block is slidably mounted in the first chute; the puncture mechanism is arranged below the frame body; the puncture mechanism is fixedly connected with the first sliding block through a connecting rod; the first sliding block drives thepuncture mechanism to adjust the position when sliding in the first chute, so that the puncture mechanism quickly reaches the position near a puncture position; and the puncture mechanism comprises afirst rack and a second rack which are perpendicular to each other. The puncture accuracy of a dangerous part is greatly improved, the work efficiency is improved, the holdup time of equipment such as CT is shortened, the CT utilization rate is increased, and resources are saved.