117 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.

A compliant bone plate that can be to be attached to two or bone fragments has a frame, a first suspended fixation body, a first flexure, and a second flexure. The frame forms therethrough one or more frame apertures, and the inner wall of the frame formed by a first frame aperture of the one or more frame apertures includes an upper wall, a lower wall, a right side wall, and a left side wall. The first suspended fixation bod is within a first frame aperture of the one or more of the one or more frame apertures, and the outer face of the first suspended fixation body includes a top face, a bottom face, a right face, and a left face. The first flexure connects the right side wall of the frame to the right face of the first suspended fixation body, and the second flexure connects the left side wall of the frame to the left face of the first suspended fixation body.

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

Device for the osteosynthetic treatment of bone fractures, in particular patella fractures, with a plate (1) which has a plurality of star-shaped cavities (4), each extending in the radial direction of the plate (1) from an open end (5) on the radially outer edge of the plate (1) to an opposite end which is closer to the center (6) of the plate (1) than the open end, and a plurality of arms (18, 19, 20, 21), each having two legs (22, 24, 25, 26, 27) arranged at an angle to one another, wherein the arms (18, 19, 20, 21) are radially continuously movable relative to the plate (1) after the one leg (22) has been received in the cavities (4) and can be releasably held in place in their respective position on the plate (1) by means of fastening means, characterized in that the arms (18, 19, 20, 21) are each individually detachably connectable to the plate (1) and independently movable relative to the plate (1), the arms (18, 19, 20,21) and the plate (1) each have at least one through-opening (13, 14, 16), and the fastening means have a plurality of screws (15, 17, 31) by means of which each arm (18, 19, 20, 21) can be detachably connected to the plate (1) and to at least one bone fragment, or the plate (1) can be detachably connected to at least one bone fragment.

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 invention discloses precise cutting equipment for allogeneic bone machining, which comprises an ultrasonic osteotome and an allogeneic bone clamping piece, the ultrasonic osteotome comprises a replaceable cutting tool bit, and an ultrasonic vibration generator acting on the cutting tool bit is arranged in the ultrasonic osteotome; a runner pipe is embedded in the upper portion of one side of the ultrasonic osteotome, electrode connectors are arranged at the two ends of the runner pipe respectively, and quantitative liquid expansion metal is contained in the runner pipe. Bone tissue is stably clamped through clamping jaws of the allogeneic bone clamping piece under the action of a pressing disc and a spring piece, a rotating sleeve drives a threaded disc to rotate under pushing of liquid, the extending length of an adjusting fan blade of an adjusting mechanism changes along with changes of centrifugal force, and the clamping force is enhanced when high-density bones are cut in cooperation with changes of the flow speed of the liquid; meanwhile, the bone residues are taken away from the cutting area by the liquid expanding the flowing direction, so that the bone residues are prevented from being sucked away during cutting, the bone residues are prevented from being embedded into bone gaps, the inflammatory reaction risk is reduced, and the bone healing efficiency is improved.

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).

The utility model discloses a humerus handle beneficial to large and small tubercle reconstruction, which comprises a humerus prosthesis handle, a cover plate and a fixing screw, a screw hole is arranged on the humerus prosthesis handle, a joint surface is fixed on the humerus prosthesis handle, the joint surface is matched with a cambered surface joint head, and the cover plate is fixed on the cover plate. The humerus prosthesis handle is mutually fixed with a human body bone block through the cover plate and the fixing screw. According to the humerus handle beneficial to large and small tubercle reconstruction, the overall operation is simple, a doctor does not need to conceal a suture binding mode and a mechanical structure when a patient moves later, compared with a traditional suture binding mode, the risk that bone fragments are separated from the binding position is high, the design has no risk, fixation is firm, the humerus prosthesis handle is made of a titanium alloy material, and the use is convenient. The screw and the cover plate are also made of titanium alloy materials, biocompatibility is guaranteed, meanwhile, strength is achieved, the cover plate and the screw are in spherical connection, the device can better adapt to the shape of a bone block, and the adaptability of the device is improved.

This invention provides a nice suture guide, comprising a slender needle bar with a puncture hook at its head and two suture channels connecting its two ends within the needle bar. When pre-positioning the suture, the ligation suture is threaded back and forth through the two suture channels to obtain a double-stranded suture, with the closed loop end of the double-stranded suture located at the end of the puncture hook. During suture passage, the puncture hook of the needle bar pierces and bypasses the bone tissue, then hooks the closed loop end of the double-stranded suture, and finally withdraws the puncture hook, thus completing the suture passage. During this process, the double-stranded suture is effectively confined within the needle bar, avoiding the risk of the double-stranded suture being stuck by bone fragments or other tissues during passage, as well as the risk of detachment during the passage process; it offers better stability and safety, and is also convenient to operate.

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 present invention concerns a method for obtaining an implantable plate for healing a fractured joint of a patient, comprising the steps of: 1) providing a 3D representation of a bone structure in a zone around a joint fracture, the zone comprising essentially all fragments of broken or ruptured bones and at least the ends of unbroken bones which form part of the fractured joint; 2) identifying different bone fragments within said 3D representation; 3) simulating a reduction of said bone fragments into a full joint; 4) calculating optimal parameter values for an implantable plate; 5) obtaining the implantable plate taking into account the calculated parameter values, whereby in step 3, the reduction is simulated by automatedly fitting positions and orientations of said bone fragments to a 3D representation of a healthy joint of said patient.

A screw element for the fixation of bone components and bone fragments is disclosed having a shaft with an outside screw thread and a longitudinal axis extending along the shaft and defining a distal direction and a proximal direction, and an insertion direction and an opposite removal direction, and has a tool attachment point starting radially inwards and the tool attachment point has a central opening and in the wall of this opening at least five tooth profiles directed radially outwards and mainly parallel to the screw axis directed radially outwards and mainly parallel to the screw axis are formed in the wall of this opening, and for each tooth profile an insertion wall in insertion direction and a removal wall in removal direction can be separated, and that the surface of the insertion wall is greater than the surface of the removal wall.

A method and a guide system for performing a bone osteotomy. The guide system has a block defining first and second edges each for guiding a cutting component. The block and a cooperating base each is configured to be releasably fixed in an operative position relative to a bone. The block has a connector that cooperates with a connector on the base to guide relative movement of the base and block substantially along a first line. Separation of a bone fragment formed using the guided cutting component produces a gap of a first width between facing surfaces on relatively movable bone parts, with the base and block fixed one each thereto. The block and base are configured so that with the bone fragment separated, the block and base can be guidingly relatively moved to thereby: a) reduce the width of the gap from the first width; b) move the facing surfaces towards each other; and c) place the bone parts in a desired relationship. The bone parts can be fixed to each other in different manners to maintain the desired relationship.

An intramedullary pin (10) for fracture reduction of a fractured bone comprising a first bone fragment (100) and a second bone fragment (102). The intramedullary pin (10) comprising an elongate body (12) for insertion into a medullary canal (108) of the first bone fragment (100) and the second bone fragment (102) through an opening (112) in the first bone fragment (100). The elongate body (12) comprising a proximal end (14) and a distal end (16). The intramedullary pin (10) further comprises a blunt tip (18) at the distal end (16) for abutting against an end (114) of the medullary canal (108) within the second bone fragment (102), and an externally threaded section (20) along at least a portion of the elongate body (12) for engaging the first bone fragment (100).

Assemblies and methods for fixation of bone or bone fragments using an orthopedic plate having a slot that causes the bone or bone fragments to compress as a screw is inserted into the slot and rotated therein. By anchoring the orthopedic plate to a first bone or bone fragment and rotating the screw into the second bone or bone fragment at an angle that may be up to approximately fifteen degrees from perpendicular to the top surface of the orthopedic plate, the screw head causes the orthopedic plate to traverse away from the first screw thereby causing the first bone or bone fragment to be drawn toward and / or compress with the second bone or bone fragment.

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.