88 results about "Pelvic fracture" patented technology

Accurate pelvic fracture detection is accomplished with automated X-ray and Computed Tomography (CT) images for diagnosis and recommended therapy. The system combines computational methods to process images from two different modalities, using Active Shape Model (ASM), spline interpolation, active contours, and wavelet transform. By processing both X-ray and CT images, features which may be visible under one modality and not under the other are extracted and validates and confirms information visible in both. The X-ray component uses hierarchical approach based on directed Hough Transform to detect pelvic structures, removing the need for manual initialization. The X-ray component uses cubic spline interpolation to regulate ASM deformation during X-ray image segmentation. Key regions of the pelvis are first segmented and identified, allowing detection methods to be specialized to each structure using anatomical knowledge. The CT processing component is able to distinguish bone from other non-bone objects with similar visual characteristics, such a blood and contrast fluid, permitting detection and quantification of soft tissue hemorrhage. The CT processing component draws attention to slices where irregularities are detected, reducing the time to fully examine a pelvic CT scan. The quantitative measurement of bone displacement and hemorrhage area are used as input for a trauma decision-support system, along with physiological signals, injury details and demographic information.

Disclosed are an apparatus and its associated method for minimally invasive stabilization of anterior pelvic fractures. The pelvic stabilization system consisting of two rod shaped implants that may be surgically inserted subcutaneously or along the bone surface of each hemipelvis and a means of both linking the individual rods as well as rigidly securing the construct to the pelvis.

An embodiment in accordance with the present invention provides a continuum dexterous manipulator (CDM) with a specially designed flexible tool, to be used as a handheld or robotic steerable device for treatment of hard-tissue-related diseases. The CDM of the present invention works well in treatment of soft and sticky material (similar to a lesion) as well as milling the hard tissues (e.g. sclerotic liner of osteolytic lesions) and bone tumors. The present invention is also directed to flexible drilling tools as well as characterization and evaluation of integrating these tools with the CDM in curved-drilling of hard bone towards treatment of hard tissue related diseases (e.g. osteonecrosis or pelvic fracture). The present invention can also include use of various types of drill geometries, aspiration and irrigation, and endoscope view in curved-drilling and trajectory planning.

The invention provides a six-degree-of-freedom series- reduction robot for fracture of pelvis. The six-degree-of-freedom series- reduction robot comprises a chassis assembly, a serial-connection platform assembly, a series- connection assembly, a parallel-connection platform assembly and an outer fixing frame assembly, wherein the chassis assembly is arranged at the bottom end of the robot and in contact with the ground through four universal wheels; the serial-connection platform assembly is positioned above the chassis assembly and fixedly connected with the chassis assembly; the outer fixing frame assembly is connected with the parallel-connection platform assembly and integrally connected with the series-connection platform assembly through the series-parallel connection assembly. The robot can replace a doctor to perform the reduction of fracture of pelvis, so that the labor intensity of the doctors can be reduced; the series-parallel platform assembly is a three-degree-of-freedom linear moving mechanism and the parallel-connection platform assembly is a three-degree-of-freedom rotary moving mechanism, and the series-parallel connection mechanism formed by combining the two mechanisms can perform six-degree-of-freedom movement; the robot has the advantages of being high in precision, high in loading capacity and rigidity, reasonable in working space, and compact in structure.

The invention discloses a pelvis CT three-dimensional reconstruction image postprocessing method based on a coordinate system and belongs to the medical image processing field. The method comprises the following steps of 101) collecting patient pelvis CT data; collecting pre-operation pelvis two-dimensional CT case data of a patient; 102) establishing a three-dimensional case model; using the case data, through three-dimensional reconstruction, acquiring a three-dimensional pelvis model of a case; 103) establishing the coordinate system in the three-dimensional pelvis model of the case; 104) acquiring a distance shift and a rotation shift of a pelvic fracture; and establishing a mathematic model in the coordinate system in the step 103), and accurately calculating distance shifts and rotation shifts of a fracture portion projected on X, Y and Z axes. By using the method, an orthopedist can conveniently, visually and accurately know a shift mode and a degree of the pelvis fracture of the patient and can accurately guide intraoperative reset for the patient.

The invention discloses a combined tool for percutaneous screw setting for minimally invasive pelvic fracture and belongs to the field of medical instruments. The combined tool comprises a casing (1), a straight-head probe (5) and a bent-head probe (6), the right end of the bent-head probe (6) is a flat elbow pushing end (601), the front end of the elbow pushing end (601) bends towards the flat side, the right end of the straight-head probe (5) is a flat straight-head pushing end (501) which is straight, and the right end of the casing (1) is sharp to form a sharp end (2). The casing (1) can be positioned accurately on a smooth bone inclined plane of a pelvis by the aid of the sharp end (2), drill holes can be fine adjusted as required to select the optimum screw setting position, and when the straight-head probe (5) deviates from a preset track and is blocked by cortical bones or pierce the cortical bones carelessly, the bent-head probe (6) is used for preventing a pushing end from falling into an original screw path. The combined tool has the advantages that the success rate of operations is high, the structure is simple, the operation is convenient, and the like.

An apparatus for stabilization of pelvic fractures comprising a stationary pad member, an adjustable pad member, and two trochanter pads. The stationary pas member comprises a cross-member with a rack gear. The adjustable pad assembly is configured to slide laterally on the cross-member so that the distance between the first and second trochanter pads is adjustable. The invention further comprises a torque release clutch that is configured to cause the retaining pawl gear tooth to disengage from the rack gear teeth when a certain force is applied to the torque release clutch.

The invention provides an inflation-reduction fixation band for first aid of pelvic fracture, which is characterized in that the fixation band comprises a pelvis inflation-pressurization fixing device, an inflation pipe and an inflation device; the pelvis inflation-pressurization fixing device comprises a strip-shaped gas chamber, a strip-shaped elastic fabric connected with the strip-shaped gas chamber and Velcro positioned at two ends of the strip-shaped elastic fabric; the middle part of the pelvis inflation-pressurization fixing device is provided with a rear support which supports pelvis and consists of at least two hard ribs; two sides of the rear support are provided with lifting handles; an elastic perineum pocket is arranged below the rear support under the pelvis inflation-pressurization fixing device; and the elastic perineum pocket is provided with an convenient opening and fastening Velcro. Compared with the prior art, the fixation band has the advantages that the fixation band reduces complications or secondary injury, is not easy to cause lower-limb fascial compartment syndrome or severe hypotension, does not interfere with evaluation of lower-limb situation and vessel treatment, and can play a role in effectively fixing and pressurizing for hemostasis during first aid for the wounded.

A pelvis arcuate line lower edge anatomic bone fracture plate relates to the manufacturing technology of surgical appliances and is applicable to fixing fracture of the pelvis of a human body. A plate body of the pelvis arcuate line lower edge anatomic bone fracture plate is a spatial arc-shaped curve body matching with the shape of a pelvis arcuate line lower edge anatomy surface, fixing screw holes (3) are arranged on a surface of the plate, and grooves (4) with equal strength are arranged on two sides of the plate. The pelvis arcuate line lower edge anatomy type bone fracture plate can be used as a mold plate for realizing fracture reduction of a pelvis arcuate line lower edge, is beneficial for examining a fracture reduction effect, and can meet requirements of internal fixation of pelvis inlets in different types. Intraoperative shaping consumed time is shortened by the anatomic shape of the bone fracture plate, influence to strength of the bone fracture plate due to repeated intraoperative shaping is avoided, problems that surrounding soft tissues are injured in a mold testing process and fracture reduction is lost are reduced effectively, particularly, sufferings of patients are reduced, surgical risks and complications are also effectively decreased, and pelvis fracture surgery success ratio and a therapy effect are improved.

The invention relates to a pelvic internal fixation unit, which is composed of at least two pelvic internal fixation screws, a supporting rod and at least two fastening nuts, wherein the pelvic internal fixation screw is composed of a fully-threaded screw rod and a U-shaped tube sleeve. The invention further provides the application of the pelvic internal fixation unit. The pelvic internal fixation unit has the advantages that: the operation flows of traditional internal fixation of pelvic fracture and corrective osteotomy are changed so that the two surgical operations are simper in operations; a screw-rod fixation system is used, and the supporting rod can be bent randomly, thereby widening the applicable scope; the supporting rod comes into no direct contact with pelvis, which applies no influence on blood supply at the facture site and at pelvis below the internal fixation unit, therefore, bone union is quickened; the system adopts angle fixation and has good fixation effect, thereby avoiding the possibility of pulling out or loosening the screws; and minimally invasive operation can be realized through subcutaneous tunnel, thereby not only leading to small trauma, less bleeding and fast recovery, but also reducing complications remarkably.

The invention discloses a transdermal screw fixation in vitro sighting device for treating pelvic fracture. According to the sighting device, the left upper end of a U-shaped calibration transmissive frame is provided with a screw exit sight with a horizontal left guide needle passage in the middle, the right upper end of the U-shaped calibration transmissive frame is provided with a screw inlet sight with a horizontal inner sleeve passage in the middle, and calibration holes are respectively arranged on left and right sidewalls of the U-shaped calibration transmissive frame; a calibration rod is fixed on the U-shaped calibration transmissive frame through the calibration holes; an inner sleeve is inserted into the screw inlet sight through the inner sleeve passage; a left fixation guide needle is inserted into the left guide needle passage; and a right fixation guide needle is inserted into the inner sleeve through a right guide needle passage arranged in the inner sleeve. The invention solves the problems of high cost, long surgery time and low accuracy of a 3D imaging navigation device. The invention applicable to most hospitals has the advantages of simple operation process, shortened operation time, rapid adjustment of screw inlet and exit points and screw fixation axis, small volume, and convenient maintenance.

The invention relates to an adjustable pelvic fracture external fixator. The adjustable pelvic fracture external fixator consists of an upper pressurizing structure, a plane boss umbrella-type insection adjusting clip, an adjusting lock structure, a locking pin structure and a stable structure. The upper pressurizing structure consists of an upper two-end threaded pipe, a front-to-back U-shaped connecting block, an internal thread rotating wheel, a ring threaded rod, a cylindrical head threaded rod, a thin round bar and a hex socket cylindrical nut; the stable structure consists of a folding stable structure and a T-shaped lock sleeve stable structure; the folding stable structure consists of a folding arc semi-ring, a folding insection semi-ring with the umbrella-type insection, an insection head U-shaped head tube, an L-shaped rod piece, and another locking pin structure; and the T-shaped lock sleeve stable structure consists of a T-shaped lock sleeve, an insection pressing bowl, another insection head U-shaped head tube, the L-shaped rod piece and the another locking pin structure. Aiming at physiology arc crown structural characteristics of the pelvic, the adjustable pelvic fracture external fixator can be adjusted, and pressurized, enables needles to be threaded at a plurality of angles, has flexible and adjustable stability for connection of the pelvic fracture, and provides a convenient fixing condition for rescuing of pelvic trauma.

The invention discloses a multi-cavity adjustable pelvis filling water bag, which relates to the field of medical apparatus and instruments, and comprises an expansion hemostasis assembly and a liquid injection assembly; the hemostasis assembly comprises a push rod and n dilation balloons, the inner end of the push rod penetrates through the n dilation balloons and enables the n dilation balloons to be connected in series in a sealed mode, the liquid injection assembly comprises n liquid injection pipes, the inner ends of the n liquid injection pipes are communicated with inner cavities of the n dilation balloons along the push rod respectively, the outer end of each liquid injection pipe is provided with a valve body used for controlling the liquid inlet amount. Minimally invasive implantation is convenient and fast, normal saline is injected into the dilation balloon, the dilation balloon is properly dilated, hemostasis is achieved through compression of generated pressure and gravity, the pressure of pelvic cavity filling can be adjusted, angiography of a pelvic cavity is not affected, operation is easy, taking out is convenient, pain of a patient can be relieved, further damage cannot be caused, and the multi-cavity adjustable pelvis filling water bag is suitable for anterior peritoneal cavity hemostasis for severe pelvic fracture.

The invention relates to a screw-setting positioning system for pelvis fracture minimally invasive therapy and a working method. The screw-setting positioning system comprises a positioning mechanism,a coordinate system mechanism, an adjusting mechanism, a scanning mechanism, a modeling mechanism and an aiming mechanism, the positioning mechanism is used for being fixed at a body surface positionof a pelvis position to form a base plane, the coordinate system mechanism is used for being arranged outside a pelvis and connected with the positioning mechanism to form an in-vitro coordinate system, the adjusting mechanism is used for adjusting one coordinate axis in a coordinate system to be perpendicular to the base plane, the scanning mechanism is used for scanning the pelvis and the coordinate system mechanism at the pelvis position, the modeling mechanism is used for building a pelvis model and a graphic coordinate system matched with the coordinate system mechanism, building a simulation curve and determining position information and nailing direction of a nailing point, and the aiming mechanism is used for adjusting nailing position and nailing direction of a channel screw. Thepositioning system and the working method are precise, quick, simple and easy to learn, so that damage caused by X-rays during operation is avoided.

The invention discloses a traumatic sacroiliac joint dislocation closed reduction and minimally invasive bionic rational internal fixation system (i.e., a surgical instrument) and a use method thereof. The system is divided into a reduction system, an aiming system and a fixation system, and has the characteristics that: 1, the internal fixation system is a three-dimensional bone traction sacroiliac joint closed reduction system under the assistance of a reduction outer frame at a prone position; 2, a sacrum rod type screw implantation aiming system in the system is a minimally invasive precise aiming system taking the screw tail of a long-tail universal pedicle screw as a joint point; and 3, a sacrum rod type screw in the system is combined with pedicle screws of the sacrum 1 and the sacrum 2 to fix the sacroiliac joint, the fixation mechanism is similar to a suspension bridge type physiological stability mechanism of the sacroiliac joint, and the internal fixation system is a bionic rational fixing system. According to the invention, early, safe, effective and minimally invasive surgical treatment can be provided for traumatic sacroiliac joint dislocation and partial sacrum fracture patients, and surgery can be carried out in primary hospitals. The internal fixation system plays an important role in improving the cure rate of pelvic fracture and reducing the disability rate and the death rate of pelvic fracture.

The invention discloses a clinical intelligent decision support system for peripheral hip joint fracture, and relates to the technical field of a medical decision system. The clinical intelligent decision support system for peripheral hip joint fracture includes an information entry module, a diagnostic module, a decision module, a case database, wherein the preliminary diagnosis module includes aperipheral hip joint fracture classification module; the peripheral hip joint fracture classification module is based on the examination result in the information entry module, and combined with theclinical peripheral hip joint fracture classification standard for classifying the peripheral hip joint fracture; the peripheral hip joint fracture classification module classifies pelvic fractures, acetabular fractures, and hip dislocations; the pelvic fractures are classified based on injury violence-Young and Burgess, and/or based on the stability-Tile of the pelvic ring, and/or the classification criteria of tibia fracture Dennis; and the acetabular fractures are classified according to the classification criteria of Letournel-Judet. The technical solution of the clinical intelligent decision support system for peripheral hip joint fracture enables a patient and the patient's family to grasp and track the patient's condition and diagnosis and treatment plan in real time.

The invention provides a pelvic fracture front ring fixing detachable screw and an internal fixing device.The pelvic fracture front ring fixing detachable screw comprises a main screw, a screw barrel and a limiting mechanism; the through hole in the nail barrel is step-shaped; a nail head of the main nail is arranged in the nail barrel, a nail rod of the main nail penetrates out of the through hole, and the limiting mechanism is detachably connected into the nail barrel and used for limiting rotation of the main nail; when the pelvic fracture front ring fixing detachable screw is detached, the limiting mechanism is separated from the through hole, and the main nail is separated from the nail barrel after rotating by a preset angle. The internal fixing device comprises a connecting cross rod and at least two detachable screws for fixing the pelvic fracture front ring. The pelvic fracture front ring fixing detachable screws are connected through a connecting cross rod. By means of the internal fixing frame, the problem that in the prior art, for a patient provided with an internal fixing frame, other parts outside a main screw body of a screw are difficult to take out is solved, and then the postoperative discomfort of the patient can be reduced on the premise that the main screw body is reserved.

The invention discloses a pelvic locking plate system. The pelvic locking plate system comprises a locking plate and a fastening unit, wherein the locking unit comprises a support frame and a guide plate; a guide hole, which corresponds to a locking hole in the locking plate, is formed in the guide plate; in a using process, the locking plate is connected to one end of the support frame and the guide plate is connected to the other end of the support frame; and a position of the guide hole is designed as a position corresponding to the locking hole. According to the pelvic locking plate system provided by the invention, pelvic fracture can be effectively fixed, with good fitting performance; and fracture blocks can be fully reduced.

The invention relates to a pelvic fracture reduction fixing suite which is used in cooperation with an X-ray machine and is characterized in that the pelvic fracture reduction fixing suite comprises afixing frame, an adjusting frame and a positioning cylinder. wherein the fixing frame is connected to a bed body; the head end of the adjusting frame is connected to the fixing frame, the adjusting frame comprises at least three sections of adjusting rods which are sequentially connected end to end and a connecting piece for connecting every two adjacent adjusting rods, at least one connecting piece is a connecting rotating shaft, and at least one connecting piece is a connecting sleeve; the positioning cylinder is connected to the tail end of the adjusting frame, the positioning cylinder isprovided with a first positioning hole suitable for a kirschner wire to penetrate through and two second positioning holes suitable for a stimulating needle of a nerve stimulator to penetrate through,and the two second positioning holes are parallel to the first positioning hole and symmetrically formed in the two sides of the first positioning hole. The pelvic fracture reduction fixing suite issimple in structure, easy to operate and full in mechanical structure, manual operation can be achieved, the direction can be changed universally, the direction can also be fixed, the kirschner wire can accurately reach the needed position, and the success rate of resetting and fixing is increased.

The invention relates to a pelvic fracture reduction device and an operating method. The pelvic fracture reduction device comprises a near end reduction mechanism, a far end reduction mechanism and aconnecting rod, wherein the near end reduction mechanism comprises a first frame body and a first positioning assembly which is mounted on the first frame body and used for fixing skeleton at the nearend of the affected side; the far end reduction mechanism comprises a second frame body, an adjusting frame body which is hinged to the second frame body, a second positioning assembly which is mounted on the second frame body and used for fixing the skeleton at the far end of the affected side, a third positioning assembly which is arranged on the adjusting frame body and used for fixing the skeleton at the far end of the affected side; and the first frame body is connected with the second frame body through the connecting rod. Through the adoption of the pelvic fracture reduction device disclosed by the invention, the effect that after pelvic fracture and displacement occur, the skeleton at the far end of the affected side and the skeleton at the near end of the affected side are in reduction closing through the in vitro reduction device is realized; the reduction accuracy is high; the recover speed of a patient is high, the skeleton recovery effect is better, and besides, the situation that a large-range of scar is left through cutting open a fracture site is avoided.