15 results about "Avulsion fracture" patented technology

The utility model provides a posterior cruciate ligament stopping point fracture fixing device which comprises a fixing steel plate, a threaded sleeve and a fixing screw, and a traction hole for a first traction line to penetrate through is formed in one corner of the fixing steel plate; one end of the threaded sleeve is rotatably arranged in the middle of the fixed steel plate, the other end of the threaded sleeve is provided with a threaded hole, and the bottom of the threaded hole is connected with a second pull wire; the fixing screw is in threaded fit with the threaded hole in the threaded sleeve, and the center of the fixing screw is provided with a threading hole for the second pull wire to penetrate through. The device can be implanted under arthroscope micro-creation, and has the advantages of small trauma and less bleeding compared with the traditional open implantation; meanwhile, compared with a loop-shaped steel plate, the bone block is fixed through the pulling force of the screw, the force is larger and more stable, and healing of posterior cruciate ligament dead point avulsion fracture is facilitated; the device is simple in overall structure, low in manufacturing cost, stable in structure and high in popularization value.

There is provided a method of diagnosis comprising providing a sample previously isolated from a subject and analysing the sample for presence of a peptide comprising the amino acid sequence N- terminal-KSSTG (SEQ ID NO 1). The diagnosis may be for example diagnosis of a disease is selected from: osteoarthritis, early stage osteoarthritis, moderate osteoarthritis, osteoarthritis associated with risk for chip fractures of the joint or risk for avulsion fractures, severe osteoarthritis, microfractures of the joints, avulsion fractures and chip fractures of the joint.

This invention provides a wire traction assembly for treating phalanx avulsion fractures, relating to the field of biomedical engineering technology. The wire traction assembly for treating phalanx avulsion fractures includes: a sleeve having a first end, a bent portion, and a second end; an insertion hole on the first end and a threading hole on the second end; a Kirschner wire for insertion into the insertion hole; and a tension band wire for attachment to the threading hole. This application achieves reliable wire fixation through direct attachment of the tension band wire to the threading hole, rather than by hanging it on the bent end of the Kirschner wire as in traditional techniques. Because the threading hole is a completely closed structure, the tension band wire cannot slip out of the hole under stress, effectively avoiding the risk of the wire slipping off at the smooth end of the needle in traditional techniques.

The invention discloses a method for fixing a finger extensor tendon avulsion fracture through a kirschner wire, and relates to the technical field of medical treatment, the method for fixing the finger extensor tendon avulsion fracture through the kirschner wire comprises the following steps: step 1, driving a kirschner wire into a finger far-end interphalangeal joint (DIP) straightening position under C-shaped arm fluoroscopy, enabling the kirschner wire not to be driven into a fracture gap when the kirschner wire passes through the joint, and enabling the kirschner wire to be inserted into the fracture gap when the kirschner wire passes through the joint; the method comprises the following steps of: (1) fixing a fracture to avoid influence on reduction, (2) resetting a fracture broken end at the back side of a tail phalanx and near a nail root through C-shaped arm perspective, and fixing by using a 0.8 mm blocking kirschner wire, and (3) transversely driving a 0.8 mm kirschner wire at the near end of the tail phalanx to penetrate out of two sides of a finger, leaving 0.4 mm outside the skin, and bending towards the finger pulp side. The method has the advantages of being firm in fixation, closed in reduction, small in injury, fast in recovery and the like, extensor tendon injury can be effectively avoided, meanwhile, the extensor tendon does not penetrate out of the finger pulp, stimulation to the skin of the finger pulp can be effectively reduced, and discomfort of a patient is reduced.

The present invention provides a reduction and positioning nail guide for posterior cruciate ligament tibial insertion avulsion fractures in the field of medical devices and a usage method. First, establish anterolateral and anteromedial approaches. The arthroscope enters the posteromedial compartment through the space between the posterior cruciate ligament and the medial femoral condyle via the anterolateral approach. After exposing the medial gastrocnemius tendon through the high-level posteromedial approach, insert the lens into the high-level posteromedial approach as the observation approach to expose the posterior cruciate ligament tibial insertion avulsion fracture fragment. Then, perform reduction and temporary fixation of the fracture fragment through the extremely high-level posteromedial approach using this device. Drill a Kirschner wire into the fracture fragment with the first sleeve and the second sleeve in this device, and screw in a hollow nail under the guidance of the Kirschner wire for fixation. It is convenient to reduce and fix the PCL tibial insertion avulsion fracture fragment, facilitate the fixation of the Kirschner wire and the hollow screw, can effectively avoid the risk of popliteal neurovascular injury, and the operation is simple and easy to establish, having extensive popularization and application value in the field of medical device technology.

The invention relates to the technical field of orthopedic surgical instruments, and discloses a protector for preventing posterior fork dead center avulsion fracture, the protector comprises an osteotomy guider and a chisel, the osteotomy guider is provided with a detachably matched fixing part, the fixing part is provided with a guide plate detachably connected with the fixing part, the guide plate is provided with a guide structure, and the chisel is provided with a guide groove. The detachable fixing component and the pre-bendable guide plate are matched with the chisel, a protective guide structure matched with the osteotomy guider is created, the guide inclined plane accurately limits the chisel track, posterior cruciate ligaments are prevented from being damaged, and the osteotomy guider is simple in structure, convenient to use and high in practicability. The guide plate is attached to the personalized bone surface of a patient through the deformation groove, stable assembly and no interference are guaranteed through the positioning groove and the receding groove, the cut-off groove can be flexibly excavated before and after bone block cutting, segmented chiseling and cutting are matched with the irregular bone surface to form a complete groove body, stress conduction is effectively blocked, and the rear fork stop point avulsion fracture is fundamentally prevented.

The invention discloses a fixing rivet for avulsion fracture and relates to the technical field of medical instruments, the fixing rivet comprises a rivet body, a rivet end cover is arranged at the upper end of the rivet body, a hexagonal groove facilitating auxiliary drilling of the rivet body is formed in the center of the upper surface of the rivet end cover, and a threading hole is formed in the side of the rivet end cover. And a threading hole is formed in the rivet end cover in a penetrating mode, a pressing piece is arranged on the upper surface of the rivet end cover, and the fixing rivet for avulsion fracture is provided with the fixing rivet. The two sets of medical sutures penetrate through the threading holes in a staggered mode, based on the medical principle of stable suturing and accurate positioning, reliable and accurate suturing and positioning can be conducted on the pressing piece, the situation that the pressing piece deviates due to the factors such as external force and tissue peristalsis in the surgical operation or postoperative recovery process is effectively avoided, and the working efficiency is improved. It is ensured that the pressing piece is located at the ideal fixing position all the time, then a solid guarantee is provided for stable fixing of avulsion bone blocks or ligaments, and the accuracy and reliability of surgical treatment are remarkably improved.

The present invention relates to a fixation device for avulsion fracture of posterior cruciate ligament tibial attachment point and a method of use. When in use, a guide rod is passed through the tibia and the fracture fragment from the front side of the tibia at the same time, and then a clamping ring is set on the guide rod between the clamping part and the fracture fragment from the rear side of the knee joint, and then the tightening part and the clamping ring are used to clamp the tibia and the fracture fragment to achieve the fixation of the tibia and the fracture fragment. Compared with the prior art, the present invention eliminates structures such as sutures and steel plates with loops, and cleverly achieves more stable rigid fixation through the tightening part and the clamping ring. Most importantly, the entire arthroscopic surgery does not require the complicated establishment of double tibial channels, and the surgical channel does not pass through the popliteal fossa blood vessels and nerve tissues, and has the characteristics of minimally invasive surgery under the whole microscope. In addition, the present invention eliminates the traditional repeated threading and winding, bundling and tying operations in the surgical process, making it more convenient and simpler to operate under arthroscopy.

There is provided an antibody that specifically binds to a peptide comprising the amino acid sequence N-terminal-GLGHN (SEQ ID NO 1), where the antibody binds to the sequence N-terminal-GLGHN (SEQ ID NO 1). The antibody can be used for diagnosis of for example bone sclerosis, fractures, chip fractures of the joint, avulsion fractures, bone bruise, osteoporosis, bone bruise, osteoporosis or cancer.

The application discloses a surgical method for the reduction and fixation of a posterior cruciate ligament tibial insertion avulsion fracture under the guidance of ultrasound, and is especially suitable for the reduction treatment of a posterior cruciate ligament tibial insertion avulsion fracture. The surgical method comprises the following steps: acquiring fracture information of a patient by means of an ultrasonic positioning device, wherein the fracture information at least comprises position information of a fracture block; planning a surgical path according to the fracture information, wherein the surgical path extends from the body surface of the patient to the fracture block; placing a guide needle along the surgical path, wherein the distal end of the guide needle is arranged close to the fracture block; placing a cannula device along the guide needle, wherein the distal end of the cannula device is arranged close to the fracture block, a working channel is formed in the cannula device, and the guide needle is accommodated in the working channel; performing a reduction operation on the fracture block; making a kirschner wire pass through the working channel and temporarily position the fracture block; opening at least two bone tunnels in a main bone adjacent to the fracture block by means of a drilling device; making a suture thread pass through the at least two bone tunnels; and fixing the two ends of the suture thread.

The application discloses an anterior cruciate ligament tibial insertion avulsion fracture fixing device, which is used for fixing the avulsion bone block in the avulsion fracture and comprises a first fixing wire, a wire feeder and a first gasket. The first fixing wire comprises a first clamping part and a connecting part, the first clamping part is connected to one end of the connecting part, and the first clamping part is arranged in cross with the connecting part. The wire feeder comprises a needle tube and a push rod in the needle tube, the clamping part can be accommodated in the needle tube, and the push rod can push the first clamping part in the needle tube out of the nozzle of the needle tube. The first gasket has a through hole. The nozzle on the first side can pass through the through hole and be arranged to the second side, and after the push rod pushes the clamping part in the needle tube out of the nozzle on the second side, the clamping part can be clamped on the second wall surface. The application avoids establishing a complex surgical channel, simplifies the whole avulsion fracture surgical process, and makes the repair of the avulsion fracture more easily realized under the arthroscope.

The invention discloses a fixing device for posterior cruciate ligament avulsion fracture, which comprises a fixing plate main body, the fixing plate main body is integrally formed by a far end, a middle end and a near end, the near end is provided with a locking screw hole I, the near end is provided with two wire passing grooves, the bottom of each wire passing groove is internally connected with a vertical column, the vertical column is provided with an annular winding groove, and the annular winding groove is provided with a locking screw hole II; the stand column is in threaded connection with a pressing cap through an external thread, the pressing cap comprises a straight section and an external expansion section, a gap is formed between the inner wall of the external expansion section and the lower edge of the outermost end of the annular winding groove, and two threading grooves are formed in the bottom of the external expansion section; a plurality of second locking screw holes are formed in the middle end and the far end. The fixing plate body can be bent on site according to the actual condition of a patient, so that the fixing plate body can be better attached to the tibial tuberosity, and the adhesive force is increased through the rough surface; the sewing rope can be pressed on the stand column through the pressing cap, and the sewing rope at the sewing position is prevented from being loosened when the two ends of the sewing rope are knotted.

The invention relates to the technical field of kirschner wire tractors, in particular to an arthroscopic kirschner wire retractor and a using method thereof.The arthroscopic kirschner wire retractor comprises a long handle and a guide needle, the bottom of the long handle is fixedly connected with a pull ring, the arthroscopic kirschner wire retractor further comprises a limiting traction mechanism used for limiting the pulled guide needle, the limiting traction mechanism is located at the end of the long handle, and the pull ring is fixedly connected with the pull ring; the limiting traction mechanism comprises a U-shaped groove and a positioning sleeve which are formed in the top of the long handle; through the effect of a limiting traction mechanism and the effect of a positioning sleeve, a worker can conveniently insert a guide needle into a fracture block of a patient, the positioning sleeve, a long handle and a pull ring are integrally arranged, the worker can conveniently use the traction device, the reduction and fixation treatment effect of the worker on the fracture block of the patient is improved, and the working efficiency is improved. And when the electric drill drives the guide pin to rotate, the guide pin is prevented from slipping off and causing difficulty in reduction of an avulsion fracture block, the operation time is correspondingly shortened, and ischemia reperfusion injury of an affected limb is relieved.

The utility model discloses a medical inner bone fracture plate for avulsion fracture of a proximal tibia posterior cruciate ligament. The device comprises a straight part and a hook part, the straight part is an arc-shaped plate formed by cutting a tubular plate, the radian of the straight part is smaller than 90 degrees, and the straight part is bent with the radian adaptive to the shape of the rear wall of the upper end of the tibia; the joint of the straight part and the hook part is in arc transition; the bent hook part and the straight part are integrally arranged, the bent hook part is bent towards the inner arc surface of the straight part in an arc shape adaptive to the rear edge of the upper end of the tibia, the bent hook part comprises two claw parts, the tail ends of the two claw parts are sharp, the joint of the two claw parts is an arc transition surface, and the radian of the arc transition surface is 180-250 degrees; and a plurality of screw holes are formed in the straight part. According to the internal bone fracture plate, stress concentration can be reduced, a stable structure is formed, and the internal bone fracture plate can be rapidly and accurately positioned when placed.

The utility model discloses a minimally invasive surgery cushion block for tendon ligament avulsion fracture, which relates to the technical field of medical instruments, is used for restraining sutures and comprises an arc-shaped pressing plate and a base. The end part, which is bent downwards, of the arc-shaped pressing plate is connected with the top surface of the base; a cavity is reserved between the end, protruding upwards, of the arc-shaped pressing plate and the base. A constraining suture passes through the cavity. The device is compact in overall structure and reasonable in arrangement, by reducing the size of the cavity, the arc-shaped pressing plate and the base are matched in an extrusion mode to restrain the suture, and finally a penetrating object is clamped and restrained through cavity shrinkage.