17 results about "Tubular bone" patented technology

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 application discloses an intramedullary fixation device for tubular bone fracture, which comprises an intramedullary nail, an anchoring structure, an adjusting mechanism and an angle locking mechanism; the intramedullary nail is used for implanting into a bone marrow cavity to provide a fracture fixation support; the anchoring structure is movably arranged on the intramedullary nail, and the anchoring structure is provided with at least one anchoring wing, and the anchoring wing has multiple unfolding angles; the adjusting mechanism is in transmission connection with the anchoring structure, and the adjusting mechanism is used for driving each anchoring wing to switch between different unfolding angles; the angle locking mechanism is linked with the adjusting mechanism, and the angle locking mechanism is provided with multiple preset unfolding angle gears, and the angle locking mechanism is used for locking the anchoring wing at a target unfolding angle. The application solves the problem that the existing intramedullary nail cannot be graded and adjusted after implantation.

The invention relates to a plate (10) for temporarily bridging fragments of a fracture having a proximal portion (11), a distal portion (12), and an intermediate portion (13) disposed between the proximal portion (11) and the distal portion (12). The proximal portion (11) has a proximal attachment zone (14) adapted to be applied and attached to a first tubular bone (1). The distal portion (12) has a distal attachment zone (15) adapted to be applied and attached to a second tubular bone (2). The intermediate portion (13) is adapted to bridge a joint (3) between the first tubular bone (1) and the second tubular bone (2) and thereby at least one further bone, in particular without attachment to the at least one further bone. The plate (10) has at least one curved region (16, 17) between the proximal attachment zone (14) and the distal attachment zone (15). Furthermore, the invention relates to a method for treating a complex joint fracture, in which in particular such a plate can be used.

The utility model discloses an intramedullary needle for treating fracture and convenient to hold, which is provided with a treatment section and a holding section for operating and holding, and a positioning structure for holding and positioning is further arranged on the holding section. The intramedullary needle conforms to tubular bone biological fixation, the treatment section can be effectively prevented from rotating in the surgical treatment operation process through the holding section, the penetration depth and path of the treatment section can be further accurately controlled, the treatment accuracy is improved, and the treatment duration is shortened. When the intramedullary needle is used in the treatment process of metacarpal bone fracture, further damage to fracture local hematoma and periosteum can be avoided through closed reduction, blood supply of sclerotin is protected, and fracture healing is facilitated. The intramedullary needle is small in trauma, small in wound scar and beneficial to attractiveness; intramedullary fixation retains the minimally invasive characteristic of kirschner wire fixation, and the fixing effect is more stable and lasting than that of a kirschner wire, and the articular surface is not damaged.

The invention relates to the technical field of shortening osteotomy, in particular to a long tubular bone shortening osteotomy guide plate reduction integrated device which comprises an arc-shaped protection plate and a connecting strip connected to one end of the arc-shaped protection plate through a shaft. The magnetic attraction structure comprises a sliding block arranged at the lower end of the sliding piece and a positioning block arranged at the lower end of the positioning piece, the sliding piece and the positioning piece are connected through a pulling mechanism, the pulling mechanism is further connected with a driven piece and a fixed piece, and the sliding piece and the positioning piece are arranged in one-to-one correspondence with the driven piece and the fixed piece respectively. According to the invention, not only can the saw blade of the swing saw be prevented from cutting soft tissues around bones, but also the saw blade of the swing saw can be ensured not to deviate in the osteotomy process, and in addition, the length of the cut bones can be intuitively seen. Meanwhile, when the two sections of osteotomy broken ends are close to each other, the two broken ends can be prevented from rotating or angulating and staggering, and then stable butt joint of the osteotomy surfaces at the far end and the near end of the two sections is facilitated.

The orthopedic reduction forceps comprise two single-blade forceps fixed by a fixing bolt, each single-blade forceps is composed of a forceps head, a forceps body and a forceps handle from head to tail, the thickness of the forceps head of each single single-blade forceps is larger than 4 mm, the thickness of a cutting edge of each single single-blade forceps is larger than 1 mm, a clamping opening of each forceps head is provided with a plurality of reduction teeth, and the top end of each forceps head is further provided with tip teeth; according to the invention, the tip teeth can be easily inserted between fracture blocks, tightly attached to the fracture blocks and stably grasp the fracture blocks, the fracture broken ends can be fixed by matching with the reduction teeth, the fracture broken ends can be kept in a good alignment relationship, and meanwhile, some small tubular bones can be clamped; the forceps body is widened and thickened, the forceps body is short and thick, the fracture broken end can be better held, inconvenience caused by narrow operation space is reduced, and the situation that the fracture broken end cannot be stably held due to the fact that bent forceps and tissue forceps are too long and too thin, and effective reduction is difficult occurs.

The utility model relates to the technical field of medical instruments, in particular to an intramedullary broken rod taking-out device which comprises an inner clamping and drawing part and an outer clamping and fixing part, the lower end of the outer clamping and fixing part is clamped and fixedly installed on the outer side of the upper end of a long tubular bone of a patient, and an outer tensioning part capable of fixing the size of an opening of the outer clamping and fixing part is arranged on the outer side of the upper portion of the outer clamping and fixing part. The utility model discloses reasonable and compact structure, convenient to use, it clamps and fixes the patient's long tubular bone immovable through the outer clamping fixed part, clamps and fixes the upper end of broken rod (broken nail or broken handle) through the inner clamping drawing part, and the inner clamping drawing part cooperates with the outer clamping fixed part action, can gradually pull the broken rod upwards, and it is convenient to use. Finally, the broken rod is taken out from the long tube marrow cavity of the patient; the device is high in operability, time-saving and labor-saving in the using process, the operation time for taking out the broken intramedullary nail in clinic and iatrogenic injury in the operation can be greatly shortened, and the pain of a patient is prevented from being additionally increased.

The application provides an external fixation support for tubular bone osteotomy, the tubular bone comprising a cutting line and proximal and distal joint ends distributed on both sides of the cutting line, the external fixation support comprising: at least two pairs of fixing needles, each pair of fixing needles comprising one or more fixing needles fixed to the proximal and distal joint ends respectively; a plurality of top blocks fixed to the proximal joint end by the fixing needles, the top blocks comprising first connecting holes and first limiting components, the fixing needles being connected to the top blocks by the first limiting components; a plurality of base blocks fixed to the distal joint end by the fixing needles, the base blocks comprising second connecting holes and second limiting components, the fixing needles being connected to the base blocks by the second limiting components; and connecting members connecting the top blocks and the base blocks by the first connecting holes and the second connecting holes, the connecting members being capable of adjusting the distance between the top blocks and the base blocks. In the external fixation support, the subcutaneous fixing devices do not need to be removed by a secondary operation. Accordingly, the application also provides a method for correcting the force line of a limb.

A medullary cavity inside and outside tubular bone fixing minimally invasive system comprises a pair of fixing needles (2) inserted into a tubular bone (1), a connecting nail (3) used for fixing the tubular bone (1) from the side face is arranged between the pair of fixing needles (2), and the connecting nail (3) is inserted into the tubular bone (1) on the two sides of a transverse fracture line. The device has the advantages that three longitudinal guide rails, a self-adaptive stress system and a relatively stable mechanical system which resists rotation, separation and different lateral stresses and shields the lateral stresses and rotation stresses are generated through a pair of fixing needles and connecting nails, so that fractures are quickly healed in a good timely mechanical environment.

The application relates to the field of shortening osteotomy, in particular to a long tubular bone shortening osteotomy guide plate reset integrated device, which comprises an arc-shaped protection plate and a connecting strip connected to one end of the arc-shaped protection plate, a sliding sheet and a positioning sheet are connected to the connecting strip through magnetic attraction structures, the magnetic attraction structures comprise a sliding block arranged at the lower end of the sliding sheet and a positioning block arranged at the lower end of the positioning sheet, the sliding sheet and the positioning sheet are connected through a pulling mechanism, a driven sheet and a fixed sheet are further connected to the pulling mechanism, and the sliding sheet and the positioning sheet are arranged in one-to-one correspondence with the driven sheet and the fixed sheet. The device can not only avoid the cutting of soft tissues around the skeleton by the saw blade of the swing saw, but also ensure that the position of the saw blade of the swing saw does not deviate during the osteotomy process, and the length of the cut skeleton can be directly observed. Meanwhile, when the two osteotomy ends are close to each other, the rotation or angular misplacement of the two ends can be prevented, thereby helping the stable butt joint of the two end osteotomy surfaces.

Modular endoprosthesis for at least partial replacement of a tubular bone, including, as module components, a stem for insertion into a bone cavity of the tubular bone, and an end piece including a support body with a neck part arranged on the medial aspect thereof. The module components being able to be coupled to each other and released from each other along a longitudinal axis of the shaft. The end piece has at least two different surface configurations on its support body, namely a closed surface (6′) on a medial aspect, and a porous configuration of the surface on the opposite, lateral aspect. The latter permits and positions the adhesion of muscle tissue, specifically without suturing. The muscle trauma caused by suturing, and the peak loads that occur at the respective suture points, can thus be avoided by virtue of the invention.

The utility model relates to medicine, specifically to traumatology, orthopedics, and purulent surgery, and can be used in the treatment of fractures of long tubular bones complicated by infectious processes. A rod for intramedullary osteosynthesis of long tubular bones is designed as a curved rod with a roughness Ra in the range of 0.02 to 0.75 μm with holes for transosseous transverse locking with screws. Isolated recesses are formed on the surface of the rod for the placement of a medicinal composition, and the shape of the rod is made anatomically corresponding to the curvature of the bone diaphysis. This achieves an expansion of the arsenal of means for the specified purpose with an increase in the performance characteristics of the rod. 31 clauses, 15 figs., 21 items.

A cannulated bone fastener (10) for engagement into a target bone and / or target bone fragment is provided. According to one embodiment. the cannulated bone fastener (10) comprises an elongated shaft (11) extending between a bone fastener tip or tip section and a bone fastener head or head section. a central cannulation (17) having a cannulation entry with a first cross-sectional area (A1) at the shaft tip section, and a cannulation exit with a second cross-sectional area (A2) at the head section, and wherein the first cross-sectional area (A1) is different from the second cross-sectional area (A2), and wherein the surface roughness of the cannulation wall is at most 25 micrometres.

The invention discloses a bone cement type intramedullary nail device capable of being used for hyperthermic perfusion chemotherapy. The bone cement type intramedullary nail device comprises a main nail, a hyperthermic perfusion injector, a bone cement injector and an aspirator. The main nail is suitable for being implanted into a lesion medullary cavity through a guide needle, a through hollow main nail medullary core is formed in the main nail in the axial direction, an injection opening communicated with the main nail medullary core is formed in the near end of the main nail, and the main nail is suitable for being connected with a hyperthermia perfusion syringe or a bone cement syringe so that chemotherapeutic drugs or bone cement can be injected into the main nail medullary core. A leaking hole communicated with the main nail medullary core is formed in the far end of the main nail, so that chemotherapeutic drugs or bone cement flows into a lesion medullary cavity; and the aspirator is communicated with the diseased medullary cavity through the water outlet screw so as to suck out the chemotherapeutics in the diseased medullary cavity. The bone nail has remarkable beneficial effects in the aspects of mechanical stability, chemotherapy drug hyperthermic perfusion treatment, bone cement filling and fixation enhancement, surgical operation process simplification, main nail structure design optimization and the like, and has a wide application prospect in the field of treatment of limb long tubular bone metastatic cancer.

The application provides an intramedullary nail fixing device for treating long tubular bone fracture, and belongs to the technical field of medical instruments, which comprises a bendable hollow main nail and an elastic inner core nail; the distal end of the hollow main nail is fixed by rotating expansion of the inner core nail, the proximal end is inserted into the bone by the splittable insert piece, and the elastic inner core nail can provide a continuous pressure, which is beneficial to fracture healing. The intramedullary nail provided by the application is bendable and can be adapted to different bones and adaptive cavities; the intramedullary nail is fixed by internal fixation technology, does not need additional locking nail fixing, can reduce the operation difficulty, protects the blood vessels and muscles near the fractured bone, and reduces the pain of the patient.

The invention relates to an intramedullary nail (1) for transverse distraction of a tubular bone (2), the intramedullary nail (1) comprising an at least partially hollow tube body (3) extending in an axial direction of the intramedullary nail (1), at least one locking means for locking the tube body (3) in an end portion of the tubular bone (2), a first inner part (5) and a second inner part (7), which are each arranged within the tube body (3) so as to be displaceable in the axial direction toward each other or with each other, a drive within the tube body (3) for axial displacement of the first inner part (5) relative to the second inner part (7), at least one longitudinal recess (11) in the tube body (3), and at least one lever mechanism (20) which comprises at least one lever element (9, 23, 24) which is designed to be extended out of, and to be retracted again into, the tube body (3) in a radial direction, wherein the displacement of the first inner part (5) relative to the second inner part (7) causes the at least one lever element (9) to be moved or extended out of the at least one lateral longitudinal recess (11) in the tube body (3) or causes the at least one lever element (9) to be moved or retracted into the at least one lateral longitudinal recess (11) in the tube body (3).

The invention discloses an external fixing device for limb long tubular bone fracture emergency treatment reduction. The external fixing device comprises an upper clamping plate, a lower clamping plate, a sliding pulling plate and a fixing belt. The lower end of the upper clamping plate is provided with a lower clamping plate; the rear ends of the upper clamping plate and the lower clamping plate are slidably connected with sliding pull plates respectively. The lower end of the sliding pull plate is movably connected with a fixing belt; connecting plates are arranged at the rear ends of the upper clamping plate and the lower clamping plate; a sliding groove is formed in the middle of the connecting plate and slidably connected with a sliding pull plate; the rear ends of the sliding grooves are slidably connected with sliding clamping plates. Clamping plates are arranged at the lower ends of the sliding clamping plates; a clamping groove is formed in the lower end of the clamping plate and detachably connected with a fixing belt; the upper and lower ends of the fixing belt are connected with the clamping grooves; the angle of the sliding pulling plate and the angle of the fixing band can be flexibly adjusted according to the position, shape and type of a fracture, so that the fixing band can be attached to fracture parts of different forms, and the contact area between the fixing band and the fracture parts on the two sides is greatly increased.