77 results about "Bone fixation devices" patented technology

An example apparatus is provided for the approximation of two bones. The apparatus can include a nail configured to be disposed within a first bone (e.g., the fibula). The nail can include a proximal end, a distal end, and a rigid body. The apparatus can further include one or more first threads disposed along the proximal end of the nail, and one or more second threads disposed along the distal end of the nail. The first thread(s) can be axially spaced from the second thread(s).

An intramedullary bone fixation device includes an elongate member having a proximal section, a distal section, and a transformative section between the proximal and distal sections. The proximal section includes a first threaded section with threads having a first pitch. The distal section includes a second threaded section with threads having a second pitch. The transformative section includes a plurality of segments disposed generally vertical between the proximal and distal sections, each segment including male and female engagement portions. One or more inner surfaces of the segments define a threaded aperture through the transformative section. A screw adapted to be placed through the threaded aperture includes a first set of threads adapted to engage threads of the threaded aperture, a distal second set of threads, and a proximal third set of threads, the second and third sets of threads having a different pitch than the first set of threads.

An intramedullary bone fixation device includes an elongate member having a proximal section, a distal section, and a transformative section between the proximal and distal sections. The proximal section includes a first threaded section with threads having a first pitch. The distal section includes a second threaded section with threads having a second pitch. The transformative section includes a plurality of segments disposed generally vertical between the proximal and distal sections, each segment including male and female engagement portions. One or more inner surfaces of the segments define a threaded aperture through the transformative section. A screw adapted to be placed through the threaded aperture includes a first set of threads adapted to engage threads of the threaded aperture, a distal second set of threads, and a proximal third set of threads, the second and third sets of threads having a different pitch than the first set of threads.

The invention provides a testing device for evaluating the degradation behavior of a degradable bone fixing instrument under complex mechanical loading, and the device can simulate complex mechanical conditions and liquid environment after the degradable bone fixing instrument is implanted into a human body in vitro, and can load pressure and fluid impact force in 1-3 directions at the same time; the temperature can be regulated and controlled to realize degradation at a specific temperature, and a plurality of test samples and degradation liquid can be collected at the same time for characterization analysis due to the multi-flux design, so that the degradation condition of the degradable bone fixation instrument under the complex mechanical loading condition is evaluated. The mechanical loading device is easy and convenient to operate, low in cost, good in universality and expansibility and adjustable in parameter, and the simulation condition is closer to the in-vivo real condition. Compared with a traditional non-mechanical condition, the device can provide a new thought for in-vitro prediction in vivo and short-term prediction of degradation evaluation of the degradable bone implant, and finally facilitates promotion of marketing of the novel degradable bone implant.

Distal tip designs for bone fixation devices are disclosed. In some embodiments, a system for bone fixation includes a delivery catheter having a proximal end and a distal end; an expandable member having a proximal region and a distal region, wherein the expandable member is releasably attached about the distal end of the delivery catheter at the proximal region of the expandable member; a distal cap attached to the distal region of the expandable member to seal the expandable member; a light conducting fiber; and a light-sensitive liquid; wherein the delivery catheter has an inner void for passage of a light-sensitive liquid into the expandable member to expand the expandable member and an inner lumen for passage of the light conducting fiber into the expandable member to cure the light-sensitive liquid inside the expandable member.

Reconfiguration of a bone fixation device of a patient may include generating, on a main server, a new actuation plan for the bone fixation device, the new actuation plan including operational parameters of the bone fixation device, notifying a patient device that the new actuation plan is available on the main server, requesting from a patient on the patient device an approval of the new actuation plan. Upon receiving the patient's approval, requesting by the patient device, from the main server, the new actuation plan from the main server, and reconfiguring the bone fixation device with the new actuation plan.

The present invention provides a lateral fibular bone transport external fixator device, which includes a fibular transport device, a tibia fixation device, and a connection device. The fibular transport device drives the synchronous movement of the fibular transport frame through the movement of the adjustment device, so as to realize the position offset of the bone block of the osteotomy segment of the fibula. The tibia fixation device includes a tibia fixation frame and a deviation correction adjustment device, and the deviation correction adjustment device can adjust the fixation position of the tibia fixation frame and the connection device. The connection device connects the fibular transport device and the tibia fixation device. The present invention also provides a method for using the lateral fibular bone transport external fixator device. The present invention only sets the fixed fulcrum on the tibia, reduces the number of wound surfaces on the tibia side, does not affect the load-bearing capacity of the tibia after surgery, and at the same time sets the bone transport operation on the fibular side to realize the lateral fibular bone transport. The fibula is located deep in the skin fascia and is wrapped by the anterior and posterior muscle groups of the fibula. There is a richer capillary basis for bone transport at the fibular end, and the effect of repairing blood circulation is better.

There is disclosed a bone fixation device that can include a cage having an optional mesh portion. The bone fixation device can be configured to couple a leg portion to a foot portion of a user's body. In at least one embodiment, the device includes at least one cage having a plurality of struts forming cells. There can be an optional mesh portion having a pre-set porosity that can be either constant or variable in density. In at least one embodiment there can be a cage portion which is substantially spherical shaped. Alternatively, the device can be substantially egg shaped. In at least one embodiment there can be a central post hole for receiving a post. In another embodiment at least one plate or shaft can connect to the cage.

The application relates to an external bone fixation device. The external bone fixation device comprises a base, a first fixing member for fixing one of a proximal bone and a distal bone, the first fixing member being movably connected to one end of the base along a first direction, so that the first fixing member can rotate relative to the base along a second direction and a third direction, the first direction being the arrangement direction of the proximal bone and the distal bone, and any two of the first direction, the second direction and the third direction being perpendicular; and a fixing assembly for fixing the other of the proximal bone and the distal bone, the fixing assembly being movably connected to the end of the base along the first direction away from the first fixing member, so that the fixing assembly can move relative to the base along the second direction and the third direction, and can move and rotate relative to the base along and around the first direction. The external bone fixation device does not need to be repeatedly adjusted, and the operation is relatively simple.

A method of preparing a metatarsophalangeal joint for fusion may involve surgically accessing the metatarsophalangeal joint and separating the metatarsal from the opposed proximal phalanx at the joint. The technique may involve preparing an end of the metatarsal and preparing an end of the opposed proximal phalanx for fusion. With or without the aid of a bone positioner, the metatarsal may be moved in one or more planes, such as the frontal and transverse planes. The proximal phalanx may also be moved in one or more planes, for example relative to the moved metatarsal. Subsequently, a bone fixation device can be applied across or through the metatarsophalangeal joint separating the metatarsal from the opposed proximal phalanx.

The utility model relates to a pressurizable arm bone fixing device which comprises a flexible pressurizable main body sleeved on an arm, an elbow fixing area and a wrist fixing area, wherein the elbow fixing area and the wrist fixing area are arranged at two ends of the flexible pressurizable main body; the flexible pressurizable main body comprises a first elastic fiber fabric layer, a second elastic fiber fabric layer arranged on the inner side of the first elastic fiber fabric layer, and a pressurizable interlayer arranged between the first elastic fiber fabric layer and the second elastic fiber fabric layer, and the second elastic fiber fabric layer is in contact with the forearm part of a user; a gel pad is detachably adhered to the inner side of the second elastic fiber fabric layer, and the gel pad is used for pressing type protection of wounds on the arms. Compared with the prior art, through the combination of the first elastic fiber fabric layer and the second elastic fiber fabric layer and the addition of the detachable gel pad, the device not only can provide uniform pressure distribution and reduce postoperative swelling and pain, but also can carry out effective pressing type protection on a wound and promote the healing process.

In an external fixation device, adjustments in length (contracting or extending a strut) are carried out by respective motorized actuators of the struts, which are programmed to operate according to an actuation plan. In some embodiments, a total required change in length is defined for each of the struts, and based on the intended number of treatment days, a daily change in length is defined for the strut. Then, taking into account the number of intended device actuations per day, a change in length for each actuation is defined. Since the total required change in length may differ for different struts of the same device, the changes in length (whether at a single actuation or as a daily, cumulative change in length) can differ between the different struts.

A bone plate incorporating a length adjusting elongate hole formed in a shaft portion thereof, along with corresponding methods of use. In one embodiment, the length adjusting elongate hole is configured to receive one or more bone fixation devices (e.g., bone screws). In use, the bone fixation device positioned within the length adjusting elongate hole may be partially loosened, without removal, to enable the patient's bone to be adjusted (e.g., loosening the bone fixation device within the length adjusting elongate hole allows the surgeon to adjust the position of the patient's bone, and hence the bone fixation device coupled thereto, relative to the bone plate). Once properly adjusted, the bone fixation device positioned within the length adjusting elongate hole may be retightened. In various embodiments, the length adjusting elongate hole is configured so that, in use, each of the plurality of bone fixation openings remains available to a surgeon.

The invention relates to the technical field of biomedical materials. The invention discloses a Schiff base-sulfonated hyaluronic acid light-cured microsphere as well as a preparation method and application thereof. The microspheres are prepared by condensing DL-lysine and paeonol to generate Schiff base, then conjugating the Schiff base with sulfonated hyaluronic acid through a carbodiimide chemical method, and finally molding by adopting a microfluidic technology and carrying out ultraviolet curing. The metal chelation characteristic of Schiff base is combined with the precise structure regulation advantage of the microspheres, and the prepared microspheres show an excellent synergistic effect when applied to the surfaces of implant materials such as degradable magnesium alloy, iron alloy and zinc alloy: the corrosion resistance of a base material can be remarkably improved, an effective protective layer is formed, and the service life of the microspheres is prolonged. Meanwhile, the compound has multiple biological functions of promoting endothelial cell proliferation, inhibiting excessive proliferation of smooth muscle cells and regulating and controlling macrophages to be polarized to anti-inflammatory phenotypes, and has a wide application prospect in the biomedical fields of intravascular stents, bone fixing instruments and the like.

A bone fixation device (1) is presented, comprising a wire (7) and a load distributor (9), the load distributor comprising: a contact side (2) having a contact region (11) which is pressed against the bone to be fixed upon tightening of the wire (7), and two opposite lateral sides (4) that are not in contact with the bone upon tightening of the wire (7). At least one of the lateral sides (4) is provided with a plurality of recesses (5) which do not extend into the contact sides (2). The contact side (2) of the load distributor (9) has a continuous smooth surface which is configured to slide across the bone without damaging the bone when the load distributor (9) is pulled longitudinally across the bone during application.

Various embodiments disclosed herein relate to bone fixation devices, including intramedullary fixation or fusion devices. The various devices disclosed include an intramedullary rod or device having a proximal portion and a distal portion. The proximal portion and the distal portion have articular ends that are connected to form a joint. The joint may be actuated to reduce the fracture and realign the bone after the device is inserted into the bone. Additionally, the device includes an adjustable joint formed between a proximal member and a distal member, the proximal member and the distal member being substantially radially movable relative to one another through the adjustable joint, and a drive mechanism operably coupled to the adjustable joint, the drive mechanism being configured and arranged to actuate the joint.

A combined inserter for insertion of an intramedullary nail and a bone plate together. The combined inserter includes a body that includes a longitudinal axis, a distal end, and a proximal end. The combined inserter includes an intramedullary nail coupler coupled to the body and configured to couple to an intramedullary nail; and a bone plate coupler coupled to the body and configured to couple to a bone plate.

There is a fixation device for promoting fusion and / or osteosynthesis of a first bone segment and a second bone segment, comprising a bone plate portion including an outer surface, an inner surface and at least one fixation aperture extending from the outer surface to the inner surface and a bone wedge portion extending from the plate portion at a first end and a free opposite end, the bone wedge portion comprising a porous architecture configured to promote bone ingrowth, the wedge portion defining first and second engagement surfaces for engaging the first bone segment and a second bone segment, respectively. There is also a method of manufacturing a fixation device for promoting fusion and / or osteosynthesis of a first bone segment and a second bone segment, a method of promoting fusion and / or osteosynthesis of a first bone segment and a second bone segment, and a fixation kit.

The present inventive subject matter is a bone fixation device where the distal end of the bone fixation device is affixed to the digit of a hand and the proximal end of the bone fixation device is connected to the a bone in the arm. There is a middle section between the proximal section and the distal section.

Knee joint biomechanics and kinematics simulation machine, including frame, ankle joint simulation device, tibia fixing device, patellar tendon fixing device, hip joint simulation device, quadriceps femoris fixing device and femur fixing device; the ankle joint simulation device is arranged at the bottom of the frame, the ankle joint simulation device is connected with the tibia fixing device, the tibia fixing device is connected with the femur fixing device, the femur fixing device is connected with the hip joint simulation device, and the hip joint simulation device is arranged on the frame; the tibia fixing device and the femur fixing device are provided with the patellar tendon fixing device at the connecting position; the hip joint simulation device and the femur fixing device are provided with the quadriceps femoris fixing device at the connecting position. The invention provides a knee joint biomechanics and kinematics simulation machine to simulate the working condition of the lower limbs of human body under physiological activity conditions such as walking and squatting, and test and research the biomechanics and kinematics of natural knee joints and artificial knee joints.

There is disclosed a bone fixation device that can include a cage having an optional mesh portion. The bone fixation device can be configured to couple a leg portion to a foot portion of a user's body. In at least one embodiment, the device includes at least one cage having a plurality of struts forming cells. There can be an optional mesh portion having a pre-set porosity that can be either constant or variable in density. In at least one embodiment there can be a cage portion which is substantially spherical shaped. Alternatively, the device can be substantially egg shaped. In at least one embodiment there can be a central post hole for receiving a post. In another embodiment at least one plate or shaft can connect to the cage.

The modular intramedullary fixation device is a multi-piece bone fixation device for insertion into the medullary cavity of a bone. In one embodiment, the modular intramedullary fixation device is formed from a plurality of substantially Z-shaped modular elements, which are assembled together to a desired length and width. In additional embodiments, the modular intramedullary fixation device includes a proximal portion, a distal portion, and a connector for connecting the two portions to each other. The connector may be provided in a wide variety of configurations, including an adjustable connector for adjusting the length of the modular intramedullary fixation device. Each of the proximal and distal portions may further have an adjustable length.

An intramedullary nail includes a shaft between a proximal end and a distal end. The distal end includes a first bend that extends from an anterior side of the intramedullary nail toward a posterior side and a second bend that extends from the posterior side toward the anterior side of the intramedullary nail. The two bends transfer an insertion force on a distal end of the intramedullary nail to, and along a longitudinal axis of the shaft of the intramedullary nail.

Various bone fixation device embodiments include both a fixation device (such as a screw) and a detachable driver device, with the fixation device having an elongate uncannulated fixation shaft, a sharp distal tip, and a proximal head having a first coupling structure and a proximal flat surface, and the detachable driver device having an elongate driver shaft and a distal head having a second coupling structure and a distal flat surface. Further implementations include a combination device comprising both a detachable driver device and a fixation device, along with related systems and methods. In addition, a stabilization device is provided that can be coupled to a detachable driver device and an attachment device to help maintain the coupling of the driver device and the attachment device and help to maintain the coupling thereof during a procedure.

A bone plate (100) incorporating a length adjusting elongate hole (130) formed in a shaft portion (115) thereof, along with corresponding methods of use, are disclosed herein. In one embodiment, the length adjusting elongate hole (130) is arranged and configured to receive one or more bone fixation devices (e.g., bone screws). In use, the bone fixation device positioned within the length adjusting elongate hole (130) may be partially loosened, without removal, to enable the patient's bone to be adjusted (e.g., loosening the bone fixation device within the length adjusting elongate hole allows the surgeon to adjust the position of the patient's bone, and hence the bone fixation device coupled thereto, relative to the bone plate). Once properly adjusted, the bone fixation device positioned within the length adjusting elongate hole (130) may be retightened. In various embodiments, the length adjusting elongate hole (130) is arranged and configured so that, in use, each of the plurality of bone fixation openings remains available to a surgeon.

A bone fixation assembly may include a male member removably couplable with a female member. The male member may include a male load-sharing feature having at least one male load-sharing surface. The female member may include a female load-sharing feature having at least one female load-sharing surface. The female load-sharing feature may be positioned and shaped to receive the male load-sharing feature therein. In response to a bending load acting on the bone fixation assembly, at least one of the male member and the female member may bend such that, at least a portion of the at least one male load-sharing surface engages with at least a portion of the at least one female load-sharing surface to distribute the bending load between the male member and the female member.

A bone disunion instrument system may include a first bone pin, a second bone pin, and a guide block. The guide block may include first and second bone pin holes to receive the first and second bone pins, and a window intermediate the first and second bone pin holes. The first bone pin may be anchored in a first bone portion and inserted through the first bone pin hole, and the second bone pin may be anchored in a second bone portion and inserted through the second bone pin hole to impart a compression or distraction force on a bone disunion between the first and second bone portions. The window formed through the guide block may provide access for an implant placed through the window to stabilize the bone disunion while the bone disunion is placed under a compression or distraction force.

The utility model discloses a skull fixing device and a brain micro-infusion system thereof, the skull fixing device comprises a base part and a first opening, and the first opening is arranged in the base part; the first groove is formed in one side in the base part; the second groove is positioned on the other side of the base part; and the clamping hook is connected with the second groove. Through close cooperation of the base part, the first groove, the second groove and the clamping hook, a stable fixing effect is provided for the brain micro-drug infusion tube, it is ensured that the infusion tube can be accurately positioned to a target brain area, and therefore accurate injection is achieved.

A fastener (100) for bone fixation, the fastener comprising: a tubular body (101) comprising a proximal end, a distal end and an intermediate portion (102) disposed therebetween, the tubular body having a longitudinal axis extending from the proximal end to the distal end. The intermediate portion (102) comprises one or more transformable zones (103) configured to transition from a first state to a second state in response to the distal end being moved towards the proximal end to form a raised profile in the outer surface of the tubular body (101) for gripping bone.

Clavicle fixation devices and methods thereof. A clavicle fixation device includes an elongated plate extending between first and second ends, the elongated plate defining a plurality of spaced apart screw holes. At least one pair of relief cuts extends into the elongated plate on opposite sides thereof, the at least one pair of relief cuts axially positioned between a pair of the spaced apart screw holes and at least one pair of suture holes along opposite sides of the elongated plate, the at least one pair of suture holes axially positioned between a pair of the spaced apart screw holes. At least one pair of relief cuts is axially aligned with a pair of suture holes to define combined holes on opposite sides of the elongated plate.