73 results about "Bone fragment" patented technology

The present disclosure relates to the field of medical image processing and, more in particular, to a method for determining an anatomical fracture reconstruction based on one or more medical images of a broken bone, and a system configured for the same. According to an aspect the method comprises the steps of: receiving medical image data associated with the broken bone, identifying the plurality of bone fragments in the medical image data, generating a plurality of 3D surface models that virtually represent the bone fragments; registering a plurality of landmarks matching the surface models; generating a reconstructed model representing a reconstructed form of the broken bone by selecting at least two landmarks; generating a template model representing an optimal alignment of the surface models; repositioning the surface models to align at the selected landmarks set using the template model as reference; iteratively refining the reconstructed model by selecting different landmarks; changing the position of the surface models to align at the different landmarks; evaluating a quality measure that quantifies how changing the position affects the quality of the reconstructed model until a stopping condition is satisfied; and determining an anatomical reconstruction of the broken bone by comparing the position of the identified bone fragments in the medical image data with the position of the corresponding surface models in the reconstructed model.

The present invention provides an osteosynthesis plate for fixing bone fragments in the repair of bone, particularly the mandible. [Solution] The plate body P comprises a plate body having at least one bridge portion BU used to bridge a gap S extending between bone fragments K1, the plate body comprising fixing portions BA1, BA2 each associated with at least one fixing point, at least one fixing point BP1, BP2 of the fixing portions formed on an island portion IA, the island portion being connected to each associated fixing portion only via spring segments FS1, FS2 which allow elastically restorable relative displacement between each fixing portion and each island portion, at least one of the spring segments causing relative displacement between the island portion and the associated fixing portion when a load is applied in the principal loading direction of the bone, and increasing the distance between the island portion and at least one bridge portion.

An orthopedic surgical guide for a surgical operation to fuse two bone fragments, wherein the guide includes:—a frame configured to be removably attached to at least one of the two bone fragments,—a cutting window

The device comprises a nail rod, a nail cap and an O-shaped pull strap, a sliding groove is formed in the middle of the nail rod in a penetrating mode, a sliding rod is connected to the inner wall of the sliding groove in a sliding mode, a plurality of mounting grooves are symmetrically formed in the outer wall of the nail rod at equal intervals in a penetrating mode, and the O-shaped pull strap is arranged in the mounting grooves. The mounting grooves extend into the sliding groove and are rotationally connected with auxiliary nails, connecting grooves are formed in the positions, opposite to the auxiliary nails, of the outer wall of the nail rod in a penetrating mode, push blocks are fixedly connected to the outer walls of one sides of the auxiliary nails and extend into the connecting grooves, and one end of the sliding rod extends out of the sliding groove and is fixedly connected with a nail cap. The outer wall of the limiting block is sleeved with an O-shaped pull strap, so that the auxiliary nail abuts against the bone wall of a patient, the friction performance of the sliding rod is improved, the nail cap is limited through the limiting block, the limiting block is sleeved with the O-shaped pull strap, the nail rod is limited through the O-shaped pull strap, and secondary reinforcement is conducted on fractured bone fragments of the patient.

A method for controlled delivery of fluids to the exterior of bone and surrounding tissue of a patient includes providing a cannulated bone rod. The method further includes creating an aperture in the skin of a patient and fixating the rod along bones or bone fragments using a spinal fixation system through the aperture. A spinal fixation system includes a bone screw having a longitudinal access and a bone rod configured to connect the bone screw to at least one additional bone screw. The bone rod is lateral to the longitudinal axis. The method further includes the steps of providing a fluid source, coupling the fluid source to the bone rod, and delivering a fluid from the fluid source into the bone rod. An additional method includes using the fixation system as a point of drainage for the posterolateral fusion site.

The invention provides a fixing steel plate for proximal humerus comminuted fracture, and relates to the technical field of proximal humerus fracture, the fixing steel plate comprises a main steel plate with a connecting hole and a branch steel plate fixed with the main steel plate through the connecting hole; a plurality of extending claws are arranged on the side, away from the main steel plate, of the branch steel plate, and fixing structures are arranged at the ends of the extending claws and can connect bone fragments and make the bone fragments tightly attached to the main bone. The branch steel plates can be strip-shaped or ring-shaped, and the extension claws can be integrally formed or detachably combined. The problems that a traditional steel plate can only be placed on the outer side, and when fractures are smashed, the upper rear large nodule and the inner fracture blocks are difficult to fix and prone to displacement or internal fixation fails are solved, all-directional fixation is achieved, the steel plate is suitable for different fracture scenes, operative wounds are reduced, and shoulder joint function recovery is assisted.

A medical device can include a first anchor for attachment to a first bone fragment and a second anchor for attachment to a second bone fragment. The second anchor attachment can be coupled to the first anchor via a compression element between the first anchor and the second anchor. The medical device can include a resorbable element maintaining the first anchor and the second anchor at a first distance. The resorbable element can be configured to at least partially resorb after insertion into a patient. After the resorbable element is at least partially sorbed, the compression element forces the first anchor and / or the second anchor to translate such that the first anchor and the second anchor are at a second distance, thereby compressing the first bone fragment and the second bone fragment.

A patella reinforcing member is disclosed. The patella reinforcing member is configured as a compliant mechanism that may be pre-tensioned / stretched to fit around a fractured patella. The member may then be anchored to the patella—for example, via fasteners and / or hooks—and the pre-tensioning forces may be released as the member returns to its initial, non-tensioned position. The member may thereby deliver targeted anterior compression between fractured bone fragments.

The utility model discloses a spine endoscope minimally invasive surgery embracing type spike tooth bone grasping forceps, which comprises a first clamping jaw, a second clamping jaw, a fixing rod and a handle, the first clamping jaw is rotatably connected with the second clamping jaw, the second clamping jaw is fixedly arranged at one end of the fixing rod, the handle is arranged at the other end of the fixing rod, and the handle is fixedly connected with the first clamping jaw. The handle is used for controlling the rotating angle of the first clamping jaw relative to the second clamping jaw. According to the embracing type spike tooth bone grasping forceps for the spine endoscope minimally invasive surgery, the opening angle is increased through the first clamping jaw and the second clamping jaw, meanwhile, when a broken bone is grasped, the second clamping jaw is matched with the arched first clamping jaw, the first sharp teeth and the second sharp teeth can stretch into the side face of the broken bone to embrace the bone block, and the broken bone is convenient to grasp.

This invention relates to the field of medical device technology, and particularly to an ultrasonic orthopedic drilling device, comprising a main unit, control cables, an operating handle, a cutting tool, a cutting tool holder, a cutting tool sheath, an anti-aspiration module, and a separation module. The invention utilizes the pressure difference generated by soft tissue aspiration blockage via the anti-aspiration module to automatically push open the sealing plate to balance the pressure. A lever-linked pressure relief plate exposes the pressure relief groove, breaking the suction cup effect, thus achieving safe unloading and reverse discharge of aspirated soft tissue while maintaining low negative pressure suction. Furthermore, the separation module utilizes the kinetic energy of large bone fragments to trigger the release of energy through the dead point of the booster spring, rapidly diverting and intercepting the large bone fragments. These fragments are then transferred in advance to the separation chamber via the side separation port for temporary storage, significantly shortening the transport journey of the large bone fragments, effectively avoiding the risk of blockage in the pipeline, and ensuring smooth suction and drainage as well as surgical continuity.

The invention relates to a method for producing a template for a bone plate for treating a fracture of a bone of a human or animal, in particular for a bone plate for treating a pelvic fracture of a human. According to the invention, in order to produce the template in a patient-specific manner with high practical applicability, a digital data set of an image of bone fragments of the fracture is obtained using an imaging method, in particular an MRI or CT or X-ray method, wherein the method comprises the following steps: a) creating a digital, in particular virtual, three-dimensional bone model of the bone fracture fragments on the basis of the data set; b) determining a digital template design adapted to the bone model; c) producing, in particular 3D printing, the template on the basis of the determined template design. The invention also relates to a data processing device, to a system for producing the template, and to a computer program product.

An osteosynthesis plate (P) for fixing bone fragments incudes an elongate main body (G) with a top side (G1) and an underside (G2) opposite the top side (G1). The underside (G2) is provided for placing the osteosynthesis plate (P) on the bone fragments. The osteosynthesis plate (P) includes multiple openings (A) for accommodating one screw (SK) each. An annular insert (R) formed in one piece is arranged in at least one of the openings (A). The insert (R) includes a first and a second portion (R1, R2). The first portion (R1) faces the top side (G1) and is arranged directly adjacent to the second portion (R2) in the axial direction. The first portion (R1) has a non-rotationally symmetrical outer contour (AD1) and the second portion (R2) has a rotationally symmetrical outer contour (AD2).

A bone reduction and fixation device (1, 70) comprises an elongated biplanar plate along most of its length having an L-shaped profile defined by a first plate surface (3A, 4A) and one or more second plates (3B, 4B), in which the first and second plates comprise a plurality of countersunk holes (8) configured for receipt of bone-fixing screws (10). The biplanar plate comprises two biplanar L-shaped end sections (3, 4) defined by end parts of the first plate and second end plates, and a monoplanar central section (2) defined by a central part of the first plate, in which the central part of the first plate has a thickness greater than the end parts. The L-shaped end sections help guide bone fragments into correct alignment and hold the alignment while the surgeon adjusts one of or both of the fragments laterally and medially to reduce the fragments. The L-shaped profile of the plate also provides for greater bending and torsional stiffness, allowing the plate to have a reduced thickness.

A hook plate guide and method of use to facilitate engagement of a hook plate to a fracture fixation plate and to at least one bone fragment in a fractured bone; the guide comprising a proximal end, a distal end having a head, and a substantially elongated rigid body with a slot adapted to receive a hook plate guide fastener and adapted to slidably secure the hook plate guide to the fracture fixation plate; the head extending outward and having at least one reference hole and at least one drill hole adapted to be positioned over the at least one bone fragment; each at least one drill hole adjacent to a respective at least one reference hole.

The invention discloses an autogenous bone taking instrument which comprises a bone taking device, a positioner and a positioning channel, and the bone taking device has various forms. The trephine bone extractor is mainly used for obtaining complete bone blocks; after the spiral bone fetcher is positioned, the spiral structure drives the cut bone blocks to enter the storage cavity; the ring cutting bone taking device can be used for completely cutting bone blocks; the spiral lifting bone taking device can store broken bone blocks in a centralized mode through a spiral structure. The bone taking bin is composed of a bin body and a bin cover, and bone scraps are cut through an incomplete circular groove. The bone scraper scrapes broken bones in the bone taking channel through the sharp cutting edge at the front end, and the broken bones can be taken out through the storage cavity. Three fixing needles are arranged on the edge of the positioner to facilitate intraoperative positioning, and a bone taking hole is formed in the middle and used for positioning the intraoperative bone taking device. The positioning channel is of an oval exposed structure and has two forms. The autologous bone extractor is high in bone extraction efficiency and operation precision, and the operation effect and the postoperative recovery effect of a patient can be effectively optimized.

This utility model discloses a Yankee tube with a filter bag, including a suction tube and a handle. The handle contains a tubular filter bag with an opening and a mesh around its perimeter. The opening of the filter bag is aligned with the outlet end of the suction tube. The suction tube and the handle are internally connected hollow structures. The handle has a back cover with a suction connector that is connected to the interior of the handle. An inner core tube is fitted over the filter bag, and a fixing ring with a through hole is located at the front end of the inner core tube. The opening of the filter bag is clamped and fixed by the inner core tube and the fixing ring and exposed at the through hole. This utility model cleverly incorporates a tubular filter bag with an open end. The drainage medium must pass through this filter bag before it can be drained. The filter bag is large in volume and has numerous mesh holes around its perimeter, which can prevent tube blockage during retention, does not affect the drainage speed, and can retain a large amount of human tissue such as bone fragments and tissue debris, thus avoiding or reducing the frequency of changing drainage devices during surgery.

The present application relates to a kind of whole guide plate for bone graft sandwich bone grafting simultaneous implantation and manufacturing method, including the implantation guide plate of bone graft and implant, bone graft positioning finishing plate, tooth positioning device of bone area, osteotomy guide plate, tooth bone model of edentulous area, tooth bone model of bone area, the top of the implantation guide plate of bone graft and implant is connected with the bottom of bone graft positioning finishing plate, can be set with the several positioning points corresponding to bone area position in bone area by the guide drill needle hole on bone graft positioning finishing plate, can accurately transplant the bone graft taken to bone area;The osteotomy guide plate can be connected with tooth positioning device of bone area, also can be fixed in bone area according to the several positioning points;The present application can realize accurate, minimally invasive, safe to obtain intraoral autologous bone graft, can provide bone graft acquisition, finishing, implantation and implantation whole process guidance for surgeon, reduce the difficulty of operation, assist surgeon to complete the whole operation more accurately, efficiently, safely.

Devices and methods for generating distraction between two or more bones to alleviate pressure on nerves are disclosed. A screw for securing a first bone fragment to a second bone fragment, said screw comprising: a proximal threaded region designed to grip bone; a distal threaded region designed to grip bone, wherein said proximal threaded region has a thread pitch greater than said distal threaded region.

The utility model discloses an auxiliary device for preparing a rat periodontal bone defect model, which comprises a frame body, a plurality of positioning pin rods for installation and fixation are arranged on the frame body, a sliding beam is arranged on the frame body along the width direction, a positioning piece slides on the sliding beam, the positioning piece comprises two positioning arms, and the two positioning arms are arranged on the frame body. The two positioning arms are connected and arranged in a V shape, a sliding groove is formed in one positioning arm in the length direction, the positioning piece is in sliding fit with a sliding beam through the sliding groove, a limiting beam is further arranged on the frame body, a limiting plate is arranged on the limiting beam in a sliding mode, a connecting ball head is rotationally arranged on the limiting plate, and the connecting ball head is connected with the positioning arm. A matching hole is formed in the connecting ball head, a drilling device is arranged in the matching hole in a matched mode, and a negative pressure device used for sucking out bone fragments is connected to the drilling device. The device is simple in structure, facilitates positioning of the oral cavity of the rat, facilitates subsequent drilling and other operations, and has a good use effect.

The application relates to the technical field of medical devices, and discloses a bone surgery drill equipment capable of recycling bone fragments, which comprises a shell, a power machine is fixedly installed at the top of the shell, the power machine outputs a torque and drives a transmission shaft to rotate when the power machine operates, a transmission shaft is fixedly installed at one end of a power machine output shaft, a negative pressure pipe is fixedly installed at the bottom of the transmission shaft, helical fins are arranged on the outer surface of the negative pressure pipe, and negative pressure holes are arranged on the outer surface of the negative pressure pipe between the helical fins. During the movement of the power machine, the transmission shaft and the ring gear rotate synchronously and in opposite directions, and under the transmission action of the inner sleeve and the rotating rod, the first drill grinding ball and the second drill grinding ball are synchronously and reversely driven to rotate, so that the vibration of the torque difference and the deflection force can be offset, the friction force generated by the first drill grinding ball and the second drill grinding ball when contacting with the bone is parallel and opposite, and can also be offset, and the practicability of the device is improved.

This invention discloses an automatic feeding device for mixing, crushing, and feeding grouper aquatic feed ingredients, relating to the field of grouper aquaculture technology. It includes a base, with a fixed shell fixedly installed on the top of the base, and a drive assembly fixedly installed on one side of the fixed shell. This invention achieves good feed crushing effect by incorporating a crushing ring, crushing roller, and elastic plates. During rotation, the four crushing plates contact one side of the elastic plates, and the rotation of the crushing plates pushes the bones inside the crushing ring, placing the bones between the elastic plates and the crushing plates. The rotation of the crushing plates compresses the bones between the elastic plates and the crushing plates, causing the bone fragments to break under pressure. Because the inner diameter of the crushing ring gradually decreases from left to right, the bones move from the left end to the right end of the elastic plates, gradually being crushed between the elastic plates and the crushing plates, thus achieving good feed crushing effect.

This invention discloses a surgical guide and its manufacturing method. The surgical guide includes: a plate body with at least two guide grooves penetrating the plate body and interconnected at an angle, the angle being the osteotomy angle; and a positioning part located at the edge of the plate body, used to locate the relative position between two bone fragments after osteotomy. Using this design, the guide grooves penetrating the plate body guide the osteotomy path of osteotomy tools during surgery, such as oscillating saw blades or milling cutters. Furthermore, the interconnected guide grooves provide the osteotomy angle, improving the accuracy of osteotomy. The positioning part can locate the relative position of the two bone fragments after osteotomy, thereby improving the accuracy of bone fragment positioning, thus improving the therapeutic effect of surgical correction of deformities and reducing postoperative pain. Additionally, the positioning part is located at the edge of the plate body, allowing for positioning using the edge of the plate body.

A method for bone regeneration and surgical planning comprising the following steps: Providing a digital dataset of a 3D image of the bones using digital X-ray, orthopantomography (OPT), computed tomography (CT), digital volume tomography (DVT) and / or magnetic resonance imaging (MRI); Identification of deviations from normal anatomy using 3D imaging; Creation of a real 3D model that corresponds to the 3D scan; Identifying deviations based on the real 3D model for planning a surgical intervention, whereby The real 3D model accurately reproduces the anatomy of the bones, including deviations within a tolerance range of ±0.05 mm. During the planning phase, the arrangement of bones and bone fragments is examined, as well as the accessibility of the bone fragments and whose removability is determined, Free-floating bone fragments that have no connection to the other bones are identified in the 3D scan before the actual 3D model is created, and In the 3D scan, appropriate spacers are incorporated between the free-floating bone fragments and the remaining bones. to hold the free-floating bone fragments.

This invention relates to the field of orthopedic medical device technology, specifically to a small bone fragment repositioning aid. The repositioning aid includes a C-shaped, curved clamping plate. A first thermoplastic block is disposed at the top center of the inner side of the clamping plate, and two second thermoplastic blocks are symmetrically disposed at the left and right ends of the inner side of the clamping plate. Fastening lines are fixedly provided at both ends of the inner side of the clamping plate, passing through the clamping plate from the inside out and connecting to a slider. A guide rod is provided at the top of the outer side of the clamping plate, and the slider is movably sleeved on the guide rod. The fastening lines, slider, and guide rod together constitute a synchronous fastening mechanism. By driving the slider to move axially along the guide rod, the fastening lines can be pulled synchronously, causing the two ends of the clamping plate to move towards the center, thereby causing the two second thermoplastic blocks to move closer together and apply a centripetal clamping force towards the first thermoplastic block. This invention has a compact structure, is flexible in operation, and is suitable for the repositioning and fixation of small bone fragments.

The present invention provides a bone fixation plate for fixing bone fragments, and a method for manufacturing such a bone fixation plate. [Solution] A bone fixation plate (P) for fixing a bone fragment, comprising a long body (G) having an upper surface (G1) and a lower surface (G2) opposite to the upper surface (G1), the lower surface being provided for positioning the bone fixation plate on a bone fragment, the bone fixation plate having a plurality of openings for each receiving a screw, an integrally molded annular insert (R) being positioned in at least one of the openings, the insert comprising a first and a second portion, the first portion facing toward the upper surface and positioned directly adjacent to the second portion in the axial direction, the first portion having a non-rotationally symmetric outer contour, and the second portion having a rotationally symmetric outer contour.

A screw includes a screw head having a bevel and an elongate shaft attached to the screw head. The shaft has a central longitudinal axis. A tip is attached to the shaft, distal from the head. A method in implanting the screw into a bone or bone fragment is also disclosed.

An assembly includes a first portion including an anchor pivotally attached to a first end of the first portion, the anchor to be inserted into an intramedullary canal of a first bone fragment; a second portion pivotally attached to a second end of the first portion and including a first skin-interfacing portion; a second skin-interfacing portion to interface with and secure the assembly to skin adjacent to the first bone fragment; and an actuation mechanism attached between the first portion and the second portion that actuates pivoting of the second portion to the first portion; wherein a lateral force is generated between the first skin-interfacing portion against a second bone fragment, adjacent to the first bone fragment, and a holding force is provided by the anchor when the actuation mechanism is actuated, so the first portion pivots with respect to second portion, while the anchor is in the intramedullary canal.

Disclosed herein are components, systems, and methods to secure an intramedullary implant to multiple fragments of a fractured bone and to secure an intramedullary implant to a fragment of a fractured bone using multiple modalities. The intramedullary implant includes a proximal body portion with transverse fixation holes positioned to receive bone fixators that secure a first bone fragment of the fractured bone to the intramedullary implant, a distal body portion with a deployable bone fixator that abuts an inner surface of a second bone fragment of the fractured bone, and a tapered intermediate body portion with a transverse fixation hole positioned to receive a bone fixator that secures the second bone fragment of the fractured bone to the intramedullary implant.

1. Name of the product in this design: Distal clavicle fracture fixation plate (anterior distal screw plate system). 2. Purpose of this design: to fix distal clavicle fractures, providing longitudinal fixation force when the distal bone fragments are small, and providing relatively strong fixation force for the distal fracture ends. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention relates to a low-salt-content polypeptide production method, and belongs to the technical field of polypeptide production. The method comprises the following steps: removing surface meat and grease from cattle bones, sheep bones and pig bones, cleaning, carrying out multi-stage crushing to prepare crushed bones, soaking the crushed bones in a microbial bacteria solution to play a biological treatment role, further adding acid, citric acid, acetic acid and hydrochloric acid with different strengths, carrying out gradient acid pickling, and finally carrying out protease enzymolysis to obtain the high-protein protein powder. And performing spray drying to obtain a finished product of the low-salt-content polypeptide. The low-salt-content polypeptide obtained through recycling of the soup, microbiological treatment, multi-stage pickling and mild enzymolysis is high in quality, low in salt content and sufficient in extraction.