106 results about "External fixator" patented technology

An adjustable external fixator and fixator kit for angle correction on a bone comprising a head element, arm, shaft element, and adjustable distraction element. Sizing inserts of different discrete sizes are provided and are installable between ends of the head element and ends of the arm. When installed, the fixator can fit patients of any size. The sizing inserts can be blocks or rails secured by threaded fasteners. The fixator and kit may also comprise a wrench releasably secured to the shaft element can be used to adjust a length of the distraction element. The fixator and kit may also comprise an angle measurement tool to measure angle of distraction.

The invention discloses an external skeletal fixator position and posture staged adjustment method and system based on intelligent marking, and belongs to the field of medical instruments. The method comprises the following steps: firstly, constructing and training a lightweight cross-scale mark generation model, and generating an optimal reference mark for each surface, except a mounting surface, of a three-dimensional marker by using the trained model; projecting each optimal reference mark to electronic paper screens on corresponding surfaces of an upper three-dimensional marker and a lower three-dimensional marker on the external bone fixator; then, a binocular camera is used for collecting images of the upper stereoscopic marker and the lower stereoscopic marker and preprocessing the images; constructing a 2D-3D point pair set matched with the feature points, and estimating a relative pose between an upper fixing ring and a lower fixing ring of the external bone fixator; and finally, calculating a pose error. If the pose error does not exceed the threshold value, the external bone fixator is not adjusted; if the pose error exceeds the threshold value, the adjustment amount of the electric connecting rod is calculated and adjusted; and repeating the steps until the pose error does not exceed the threshold value, and completing pose adjustment. And pose adjustment is carried out in stages, so that the adjustment precision is improved.

The invention discloses a main rod connecting device of an external bone fixing frame, and relates to the technical field of medical instruments. Comprising fixing rods, steel needles are installed in the fixing rods, universal joints are installed at the opposite ends of the two fixing rods, a shell is arranged between the two universal joints, a grading rotating mechanism is installed in the shell, an adjusting assembly is installed at the lower end of the front side of the shell, and the grading rotating mechanism comprises a baffle. A rotating rod is rotatably connected to the upper end of the barrier plate, a resistance assembly is installed in a second gear, normal joint movement is simulated, the problem that joints of a patient are stiff in all recovery stages is solved, the patient is helped to rebuild motion perception so as to improve the recovery effect, resistance during limb rotation of the patient can be increased step by step, and the recovery effect is improved. Exercise and adaptability to the limbs of the patient are enhanced, the recovery effect of the fracture area of the patient is improved, and growth of callus is promoted.

The present invention relates to an elastic external fixator system (1) for distracting a first bone (3) from a second bone (5) of the body (C) of a patient (P), comprising: - a first pin (7), - a second pin (9), and - a pair of fixators (11), each fixator (11) being held respectively by one end of the first pin (7) and by one end of the second pin (9), each fixator (11) comprising a first portion (21) having a first through hole and a second portion (22) having at least one series of second through holes, the first portion (21) being made of a first elastomeric material, the second portion (22) being made of a second material having a greater hardness than the first material. The invention also relates to an assembly comprising such a system (1) and a drilling guide. Figure for the abstract: Fig. 1

The utility model discloses an external fixing instrument for treating bony hammer-shaped fingers in the technical field of hammer-shaped finger treatment, which comprises a fixator aluminum plate, an injured finger and a fixing needle, the fixator aluminum plate is strip-shaped and can wrap the two sides of the palm back of the injured finger of a patient, and the fixing needle can penetrate through the fixator aluminum plate to pressurize the fracture end of the patient. The fixator aluminum plate is provided with a mounting hole, the mounting hole is formed in the middle of the fixator aluminum plate, and the diameter of the mounting hole is smaller than the size of the tail segment of a finger of a patient; the traction equipment can penetrate through the mounting hole to be fixed to the tail section of the finger of the patient, the end, located between the fixator aluminum plates, of the traction equipment is soft rubber, the soft rubber can be fixedly attached to the tail end of the finger of the patient, and an adjusting assembly is arranged at the upper end of the traction equipment; the annular fixing band is elastic and can be connected to the lower end of the fixator aluminum plate wrapping the fingers of the patient in a sleeved mode, and the external fixator can be used for treating the patient under the condition that an operation is not conducted.

The present technology relates generally to ring fixators and associated systems and methods. In some embodiments, for example, a ring fixator assembly comprises a ring configured to surround a fractured bone, a retention device disposed at a first position on the ring, and a tensioner clamp disposed at a second position on the ring. A wire extends between the retention device and the tensioner clamp. The tensioner clamp includes a first screw configured to secure the wire in position with respect to the tensioner clamp and a second screw configured to apply additional tension to the wire.

The utility model relates to the technical field of intrauterine devices, in particular to a T-shaped intrauterine device external hanging fixator which comprises a fixing portion and an installation portion, the fixing portion comprises a fixing cylinder and a fixing plate arranged at the top of the fixing cylinder, two through hanging holes are oppositely formed in the side wall of the fixing cylinder, and a fixing rod is arranged at the position, corresponding to the axis of the fixing cylinder, of the top of the fixing plate. The fixing rod is spiral; the mounting part comprises a mounting cylinder coaxially and movably arranged on the fixing cylinder in a sleeving mode, the top of the mounting cylinder abuts against the bottom of the fixing plate, and a limiting piece is arranged between the mounting cylinder and the fixing cylinder and used for limiting relative rotation of the mounting cylinder and the fixing cylinder. By adopting the technical scheme provided by the utility model, the technical problem that the expected contraception and treatment effects cannot be achieved due to the fact that the contraception device is easy to move downwards in the uterus and even prolapse from the uterus after the contraception device is put in the uterus in the prior art can be solved.

A joint of an external retaining device for fragments of a bone (external fixator) with circular ribs and grooves having a V-shaped cross-section, the flanks of which form frustum-shaped friction surfaces, which enable a high friction force to prevent rotation of the joint, and thereby prevent inadvertent displacement of the retaining device, and enable adjustment of the retaining device using an adjustable friction force for aligning the fragments of the bone.

The invention discloses a characterization method for describing tibia malformation correction path features, and the characterization method comprises the following steps: S1, building a bone section model, and modeling a bone section after osteotomy into a closed ring surface with the tail end of the bone section as the center; s2, according to the total correction period, the total adjustment amount of all traction rods of the parallel external fixator is averagely distributed every day, and then joint space equal-interval discrete planning is achieved; s3, constructing correction path characteristic evaluation indexes including rod length adjustment rate, bone section position stretching rate and bone section posture stretching speed; s4, the new bone shape is visually represented, the growth process of the bone section is represented as a series of discrete closed ring surfaces along the correction path, and the new bone shape is represented as the volume swept by the series of discrete closed ring surfaces along the correction path. According to the method, the visual representation of the new bone generation process in the malformation correction process is realized, so that a clinician is assisted to carry out feasibility analysis and evaluation on a preoperative correction prescription.

The present disclosure relates to an external fixator for orthopedic use, in particular for the treatment of calcaneus fractures, comprising: a rigid support for a first clamp for fixing bone screws; a second support for a second clamp that is hinged at an end of the rigid support; a third support for a third clamp that is hinged at an end of the rigid support; the rigid support being configured as a guide with the first clamp slidingly mounted thereon. The fixator according to the invention is made of radiolucent material with joint elements comprising partially radiolucent or radiopaque materials and configured to allow orienting the bone screws held by the clamps in directions that are tilted to each other.

The utility model relates to an L type medical external fixator, including short plate, long plate, hinge, binding band and flannelette protective cover, hinge includes the casing that is located in the hinge, the inside of the casing is equipped with hinge shaft, the outer surface of hinge shaft is respectively rotatingly equipped with first hinge and second hinge. According to the L-shaped medical external fixator, through cooperation of the short plate, the long plate, the hinge, the binding belt and the like, when the L-shaped medical external fixator is worn and a patient is in a horizontal position, the short plate is arranged on the first lumbar vertebra of the back side of the patient, the long plate is tightly attached to the outer side of an affected limb, the flannelette protection sleeve makes contact with the skin of the patient during binding, and the binding belt is pressed on the flannelette protection sleeve; then a binding belt with a proper length is taken, the binding belt forms transverse 8-shaped binding on the waist of the patient, and meanwhile, in the binding process, the tightness of the binding belt is adjusted to ensure that the binding belt is not too tight to influence blood circulation and is not too loose to be effectively fixed.

The present invention belongs to the technical field of medical devices, and in particular, is an external fixator for drainage tubes after breast cancer surgery, comprising a fixed disk, a pressure plate fixed on the front of the fixed disk, the pressure plate being elastic, and a slide groove being provided on the front of the fixed disk, a slider being slidably connected in the slide groove, a push plate being fixed on the top of the slider, the pressure plate being close to the push plate and tilted upward, a double-sided adhesive strip being provided on the back of the fixed disk, and the pressure plate and the push plate being connected by a fixing assembly. In the present invention, the external fixator for drainage tubes after breast cancer surgery can compress and fix the drainage tube by the cooperation of the fixed disk, the elastic pressure plate and the push plate. When the drainage tube is pulled strongly, the drainage tube can still move and will not be fixed, which not only ensures the stability of the drainage tube under normal circumstances, but also avoids the problem of displacement or disengagement caused by pulling, thereby improving the safety and effectiveness of drainage.

A centering rotation device for an Ilizarov bone external fixator comprises a fixing assembly, a rotation adjustment assembly and a rotation positioning assembly; wherein one end of the fixing assembly is used for fixed connection with the proximal fixing ring of the Ilizarov bone external fixator, and the other end is connected to the rotation adjustment assembly; one end of the rotation adjustment assembly is connected to the fixing assembly, and the other end is arranged on the distal adjustment ring of the Ilizarov bone external fixator, and is used to apply rotational stress to the distal adjustment ring; one end of the rotation positioning assembly is fixedly connected to the proximal fixing ring of the Ilizarov bone external fixator, and the other end is movably sleeved on the distal adjustment ring of the Ilizarov bone external fixator through a hollow fixing ring, so that the distal adjustment ring can move within the space of the fixing ring. The present invention is convenient to disassemble and install, and can realize independent rotation adjustment of the distal circular ring, thereby playing a role in correcting the deviated bone force line.

The present invention provides a single-rod bone distraction device. The bone distraction device includes a main body structure of the bone distraction device, a rod needle clamp, and bone needles. The main body structure of the bone distraction device includes a base rod and a sleeve. The base rod includes an adjustment section in the middle and first and second fixed sections at both ends. The sleeve is slidably sleeved on the adjustment section. The adjustment section is provided with an axially extending guide groove. A guide key that is slidably and cooperatively engaged with the guide groove is detachably installed on the sleeve. The outer surface of the adjustment section is provided with an external thread. The two ends of the sleeve are respectively provided with first and second nuts that are threadedly engaged with the external thread through internal threads. By screwing the first and second nuts, the sleeve is driven to move axially. The rod needle clamp and the bone needles are installed on the first and second fixed sections to fix the two ends of the bone to be distracted. The rod needle clamp and the bone needles are installed on the sleeve. It has the advantages of simple structure, easy bone fixation, low cost, convenient and fast operation, and can be used in combination with a ring external fixator and a combined external fixator.

Logic may provide a deformity analysis to create a treatment plan for external fixators. Logic may further perform additional refinements to the treatment plan to improve the patient experience. Logic may further include pre-operative osteotomy to select an osteotomy and to provide real-time updates to a post-operative image based on changes to an osteotomy line, orientation, and / or rotation point. Logic may facilitate movement of one or two portions of a medical image to determine an alignment of bone segments in the portions of the medical image. Logic may generate deformity parameters based on a combination of translations and / or rotations of the movement to align the portions. Logic may create a treatment plan including a prescription for an external fixator based on deformity parameters.

The utility model relates to the field of external fixators, and discloses a fibula unilateral external fixator which comprises a threaded column, the upper end of the outer surface of the threaded column is sleeved with an upper nut in a threaded mode, the middle of the outer surface of the threaded column is sleeved with a clamping block in a threaded mode, and a clamping groove is formed in one side of the lower end face of the clamping block. The lower end of the outer surface of the threaded column is sleeved with a lower nut in a threaded mode. In the utility model, in a surgical operation, a steel plate is usually used for treating a fracture through a screw, and the steel plate is fixed on a skeleton through a screw to provide stable support and promote the healing of the fracture, but the screw steel plate needs to be disassembled after being used, and meanwhile, the screw steel plate possibly causes injury to a patient when being disassembled; when the fibula unilateral external fixator is used, external fixation is convenient, the broken end of the fibula can be reset through a small incision or closing, the outer surface of the threaded column is sleeved with the upper nut and the lower nut, and the positions of the clamping block and the clamping piece can be adjusted when the upper nut and the lower nut are rotated.

The invention relates to the technical field of medical instruments, and particularly discloses a spiral limb fracture external fixator and a using method thereof.The silica gel air bag bandage is made of silica gel, is in a thin strip shape and is connected through a plurality of air bags, the edges of the air bags are substantial leucorrhea, the inner side and the outer side of each air bag are in special shapes, air holes are formed in the adjacent air bags, and an inflation opening is connected with an air guide pipe; and the digital display inflator pump is connected with the air guide pipe and the sensor. When in use, the sensor is attached to an affected limb, the spirally wound bandage wraps the sensor, and then the digital display inflator pump is used for inflating to a set value. The air bag is of a semicircular structure on the outer side and a trapezoidal table structure on the inner side, when the air bag bandage is wound on an affected limb, the side faces of the trapezoidal tables can be tightly attached and firmly fixed, the semicircle is pulled into a flat empty bag structure, and vibration is relieved. Under the cooperation of devices such as the digital display inflator pump and the flexible film pressure sensor, the air bag can change along with the state of the limb, continuous compression power is generated on the limb, and a patient can do some simple activities.

The present invention relates to an elastic external fixator system (1) suitable for distracting a first bone (3) with respect to a second bone (5) of the body (C) of a patient (P), comprising: - a first pin (7); - a second pin (9); and - a pair of fixators (11), each fixator (11) being respectively held by one end of the first pin (7) and by one end of the second pin (9), each fixator (11) comprising a first portion (21) provided with a first through-hole and a second portion (22) provided with at least one series of second through-holes, the first portion (21) consisting of a first elastomeric material, the second portion (22) consisting of a second material which has a greater hardness than the first material. The invention also relates to an assembly comprising such a system (1) and a drilling guide.

The present invention discloses a method and system for adjusting the posture of an external fixator in stages based on intelligent marking, which belongs to the field of medical devices. First, a lightweight cross-scale marker generation model is constructed and trained, and the trained model is used to generate an optimal reference marker for each surface of the three-dimensional marker except the mounting surface; each optimal reference marker is projected onto the electronic paper screen of the corresponding surface of the upper and lower three-dimensional markers on the external fixator; then, a binocular camera is used to collect the images of the upper and lower three-dimensional markers and perform preprocessing; a 2D-3D point pair set of matching feature points is constructed to estimate the relative posture between the upper and lower fixing rings of the external fixator; finally, the posture error is calculated; if the posture error does not exceed the threshold, the external fixator is not adjusted; if the posture error exceeds the threshold, the adjustment amount of the electric connecting rod is calculated and adjusted; this cycle is repeated until the posture error does not exceed the threshold and the posture adjustment is completed. Posture adjustment is performed in stages to improve the adjustment accuracy.

Embodiments of a multi-clamp apparatus for an orthopedic exterior fixator are disclosed. One embodiment of the multi-clamp apparatus has two clamp arms, each having a plurality of opposing crescentic channels that, when pressed together, are of a length, size, and shape to engage and secure a plurality of bone pins. An outrigger bar extends from each of the clamp arms for attachment of fixator components. Each clamp arm has a collapsible torque amplifying knob that can be hand operated and that causes relative movement of the two clamp arms for concurrently clamping and unclamping multiple bone pins when rotational force is applied to one or both of the knobs. The turn levers of each knob can be collapsed in a generally mating, side-by-side arrangement. The turn levers of the knobs are ergonomically designed so that the knobs can be hand operated, without tools, in the collapsed and un-collapsed configurations.

Logic may provide a deformity analysis to create a treatment plan for external fixators. Logic may further perform additional refinements to the treatment plan to improve the patient experience. Logic may further include pre-operative osteotomy to select an osteotomy and to provide real-time updates to a post-operative image based on changes to an osteotomy line, orientation, and / or rotation point. Logic may facilitate movement of one or two portions of a medical image to determine an alignment of bone segments in the portions of the medical image. Logic may generate deformity parameters based on a combination of translations and / or rotations of the movement to align the portions. Logic may create a treatment plan including a prescription for an external fixator based on deformity parameters.

The present invention provides a 3D printed hollow external fixation brace and a preparation method thereof, belonging to the field of medical device technology, comprising a brace body, a medicine port reserved on the brace body, a brace block installed in the medicine port, and the pillars and the brace body connected via a connector; the connector comprises a connector piece, an upper connector module and a lower connector module; the upper connector module is installed on the connector piece, the upper connector module comprises an inner column, an outer shell and a stop unit, the inner column is installed in the outer shell, and the stop unit is installed in the inner column; the lower connector module is installed on the brace body, the lower connector module comprises a lower connector tube, a connector sleeve and a traction unit, and the lower connector tube is installed on the outer wall surface of the brace body. The present invention solves the problem that the current use of damaging external fixators for fixation is prone to infection, inconvenience in movement, muscle atrophy, poor patient experience, and certain medical risks.

The utility model relates to the technical field of medical instruments, and discloses a drainage tube external fixator which comprises a spring rod fixedly installed on the inner top wall of a tube sleeve, the upper end of the spring rod is fixedly connected with a pull rod used for pulling, and the lower end of the spring rod is fixedly provided with an installation block used for positioning. The lower end of the mounting block is fixedly connected with a cover plate used for positioning, and the outer surface of the pipe sleeve is fixedly connected with a connecting block used for positioning. According to the external fixator for the drainage tube, the tube sleeve, the spring rod, the pull rod, the mounting block and the cover plate are arranged in a matched mode, before a medical worker clamps the drainage tube in the tube sleeve, the drainage tube can be clamped in the tube sleeve by pulling the pull rod to enable the mounting block and the cover plate to be lifted upwards, and resetting can be conducted through the elasticity of the spring rod after the pull rod is loosened; the drainage tube can be limited and fixed by rotating the rotating shaft, so that the drainage tubes of different types and different sizes can be limited and fixed.

The utility model is applicable to the technical field of medical consumables, and provides a durable drainage tube fixing paste which comprises a base layer paste and a fixer, a central ring is arranged at the top of the base layer paste, a circle of clamping hook is formed at the top of the central ring, a plurality of limiting strips are further arranged on the inner wall of the central ring, a connector is arranged at the bottom of the fixer, and a narrow opening wider than the limiting strips is formed in the lower portion of the connector. A pair of arc-shaped grooves are formed in the top of the fixator, and a locking cover is further connected to one side edge of the fixator through a rotating shaft. According to the structure, the drainage tubes are fixed through the fixator, two drainage tubes can be fixed at the same time, and compared with an adhesive tape mode, the drainage tubes are not prone to falling off; in addition, the connector at the bottom of the fixator is directly inserted into the center ring, the fixator can rotate in a small range to adapt to movement of a human body pasting part, the dragging degree of the drainage tube to the fixing paste is reduced, and the fixing paste cannot fall off and is durable.

External fixator assemblies, systems, and methods thereof. An external fixator system may include a plurality of fixator assemblies configured to connect a plurality of pins, for example, positioned on opposite sides of a fractured bone, with one more rods. The fixator assemblies may include a plurality of clamp assemblies that are configured to clamp onto the rods. A distractor / compression instrument is used to adjust the location of a clamp assembly along the length of its rod.

The invention relates to the technical field of external fixator for fracture, in particular to an external fixator for chest fracture. According to the technical scheme, the device comprises two fixing plates and further comprises a plastic module installed in the fixing plates, a plurality of elastic flexible plates are installed on the plastic module, the plastic module changes the bending degree of the flexible plates at different positions according to the contour of the human body, and the plastic module fixes the deformed flexible plates. According to the invention, the shaping plate is effectively prevented from applying extra pressure to the human body, so that the human body is prevented from being locally pressed, the comfort of a patient is effectively improved, and compression pain, numbness and even blood circulation disorder caused by excessive local pressure are prevented.

The utility model provides a multi-segment spine reduction external fixator, which relates to the field of spine reshaping, and comprises fixing plates which are symmetrically arranged up and down, the two fixing plates are fixedly connected through inserting plates on two sides, two sides of the fixing plates are rotatably connected with telescopic sleeves, and the other ends of the telescopic sleeves are fixedly provided with limiting sleeves; the telescopic sleeve is divided into a fixed end and a free end, and a hinge shaft is fixedly installed on the contact face of the telescopic sleeve and the fixing plate. Through rotation and stretching of a limiting sleeve, after connection is completed, curing glue is injected into a cavity formed by a sealing ring, a telescopic sleeve and a positioning hole, meanwhile, curing glue is injected into a cavity formed by a sliding groove, a baffle and a positioning groove and a fixing sleeve, and therefore the device can be rigidly connected; through the arrangement, after the limiting sleeve can be adjusted at will, the device is rigidly connected, and therefore the problem that when the position of an existing device is fixed, the hole opening position needs to be precisely limited can be solved.

The invention relates to the technical field of CT image examination external fixators, in particular to a movable CT image examination external fixator, which comprises a bed body, a fixing device, a first fixing device, a second fixing device, a third fixing device, a fourth fixing device and a fifth fixing device, and is characterized in that a patient can lie on the bed body and can be moved into a CT; the head fixing assembly is arranged above the bed body and can reciprocate in the length direction of the bed body; the sliding rails are fixed to the two sides of the bottom of the bed body and are in sliding fit with the head fixing assembly. The body fixing assembly is arranged above the bed body, can reciprocate in the length direction of the bed body and is in sliding fit with the sliding rail; the head fixing assembly comprises movable frames distributed on the two side faces of the bed body. The side face clamping air bag is arranged to clamp the head of a patient, the side face clamping air bag can adapt to the shape of the head of the patient, the material is soft, discomfort is not likely to be brought to the patient, and the height of the head of the patient can be adjusted through the function of the height adjusting air bag.

An external fixator for fixing a fractured bone in place is disclosed. Methods of making and using the external fixators are also disclosed.

An improved external fixator assembly for fixating fractures that includes a proximal frame assembly, a distal frame assembly and a polyaxial joint. The polyaxial joint comprises articulating components that engage to have multi-axial or polyaxial translational motion to allow for distraction / reduction and adjustment of flexion / extension, radial / ulnar deviation, pronation / supination of the wrist to an optimal wrist position. The polyaxial joint may be lockable. Fixation screws are also provided for engaging the patient's bone tissue on opposite sides of a fracture.