37 results about "Avulsion fracture" patented technology

The invention relates to a posterior cruciate ligament protection device for total knee replacement. The posterior cruciate ligament protection device is characterized by comprising a handle, wherein one end of the handle is fastened and connected with an auxiliary plate; the inner surface of the auxiliary plate is of an arc-shaped structure; one end, far away from the handle, of the auxiliary plate is fastened and connected with a fixed protection plate; the inner surface of the fixed protection plate is provided with a groove structure; and the end part, far away from the auxiliary plate, of the fixed protection plate is provided with a cutting edge. One end of the handle is fastened and connected with the auxiliary plate for covering a thighbone trochlear groove, and the fixed protection plate inserted into the tibial plateau sclerotin is fastened and connected into a position, far away from the handle, of the auxiliary plate, so that in the use process, the tibial plateau can be forwards pushed out relative to the thighbone by using the lever principle; and the convenience is brought to osteotomy. The inner surface of the fixed protection plate is provided with the groove structure, so that the posterior cruciate ligament and the posterior cruciate ligament bottom dead center can be covered and protected, and the posterior cruciate ligament tibial lateral bottom dead center avulsion fracture in and after the operation can be prevented.

The invention discloses a fixing steel plate for the posterior cruciate ligament tibial avulsion fracture. The fixing steel plate is provided with a U-shaped pressing plate, the periphery of the front portion of the posterior cruciate ligament tibial insertion is covered with the bending part of the U-shaped pressing plate, and the two sides of the U-shaped pressing plate extend along the edges of the two sides of the posterior cruciate ligament tibial insertion respectively to the rear poration of the posterior cruciate ligament tibial insertion; the lower surface of the U-shaped pressing plate is a curved surface matched with the surface of the bone covered with the U-shaped pressing plate; the two sides of the U-shaped pressing plate are each provided with a lug extending outwards, and the lower surface of each lug is a curved surface matched with the surface of the bone covered with the lug; a screw hole is formed in the middle of each lug, and the axis of each screw hole points to the cortical bone in front of the upper section of the tibia; one line tying hole is formed in the position, close to the front edge of each lug, on the corresponding side of the U-shaped pressing plate, and one line tying hole is formed in the position, close to the rear edge of each lug, on the corresponding side of the U-shaped pressing plate.

The invention discloses an anterior cruciate ligament tibia condyles spina intercondyloidea avulsion fracture fixation steel plate. The fixation steel plate is provided with a board body from a tibia condyles spina intercondyloidea front edge to anterior cruciate ligament lower end point; the end, far away from the anterior cruciate ligament lower end point, of the board body and the edges of the two sides are provided with a skirt edge along the upper surface of a tibial plateau in the periphery of the tibia condyles spina intercondyloidea in an extending mode, and the end, opposite to the anterior cruciate ligament lower end point of the skirt edge is provided with compression strips on the rear edges of the tibia condyles spina intercondyloidea respectively along the edges of the two sides of the tibia condyles spina intercondyloidea in the tibial plateau; the lower surface of the plate board is a hook face which is matched with the upper surface of the tibia condyles spina intercondyloidea which is covered by the plate board, and the skirt edge and the lower surface of compression strips are matched with the surface of the tibial plateau of the edge of the tibia condyles spina intercondyloidea; the middle portion of the plate board is provided with a screw hole, the axis of the screw hole points to cortical bone in the rear of the upper section of tibia; the tail ends of the two compression bars are provided with line tying holes respectively.

The invention relates to a bone fracture plate, and particularly relates to a locking bone fracture plate with hooks for a proximal end of a humerus. Through making the contour of a steel plate abutted with the anatomic forms of a proximal end and a lateral border of the humerus, difficult problems in the therapeutic processes of the avulsion fracture of a greater tubercle of the humerus, the comminuted fracture of the greater tubercle of the humerus and the comminuted fracture of the proximal end of the humerus are solved. The locking bone fracture plate with the hooks for the proximal end of the humerus comprises a steel plate body, wherein the upper end surface of the steel plate body is connected with three drag hooks in an integral molding manner; the three draw hooks are connected with one another and are connected with the side of the steel plate body. The length design of different extending plates is suitable for different therapeutic demands, can be selected and used according to the conditions of different fractures; the shortest locking bone fracture plate with the hooks for the proximal end of the humerus can be operated under a shoulder arthroscopy, and has more advantages for the avulsion fracture and the comminuted fracture of a small piece.

The invention discloses a suspension steel plate for treating cruciate ligament tibial avulsion fracture. The suspension steel plate includes a first steel plate and a second steel plate. The first steel plate and the second steel plate can be buckled together, the bottom end of the first steel plate is fixedly connected with a clamping block, the bottom end of the clamping block is provided witha clamping groove, the left and right sides of the top end surface of the second steel plate are each provided with a third insertion groove, the third insertion groove is connected with the clampingblock through a gap, and the bottom end of the third insertion groove is provided with a first insertion groove. The suspension steel plate for treating cruciate ligament tibial avulsion fracture effectively fixes an injured part of a patient, so that the connection is convenient, the fixation is fast, and quick dismantling and quick mounting in urgent need can be achieved; due to the installationof two layers of steel plates, the injured part of the patient is effectively protected, the outer layer steel plate makes an object not be in contact with the injured part of the patient during theaccidental impact of the outside object, thereby avoiding secondary damage to the patient.

The invention relates to a fixing device for avulsion fractures of the anterior cruciate ligament (ACL) tibial insertion. The fixing device comprises a fixing plate and multiple fixed lines slidably fixed in the fixing plate. Two ends of each fixed line respectively extend out of the fixing plate from opposite directions. The whole device has a simple structure. The fixing plate and the fixed lines can slide relative to each other. In the implantation process, the position of the fixing plate can be conveniently adjusted. The operation is simple and convenient and facilitates fracture reduction and pressed fixation of the ACL tibial insertion during an operation, thus shortening the time for reduction and fixation surgery of fractures and simplifying the operation. The contact area betweenthe fixing plate and a fracture block is large, and the fixation is firm. No secondary surgery is required to remove a fixture, which reduces operative wounds and improves the quality of the operation. The device of the invention is applicable to various types of avulsion fractures of ACL tibial insertion.

The invention discloses an auxiliary device for treating front and back cruciate ligament tibial attachment point avulsion fractures. The auxiliary device comprises a cylindrical hollow guide sleeve, wherein an opening is formed in the axial direction of the guide sleeve; the opening is communicated with two ends of the guide sleeve; a disc-shaped steel plate is coaxially arranged inside the guide sleeve; a central column is arranged at the central position of the bottom surface of the steel plate; a through hole a is formed in the central column; inverted thorns are further arranged on the bottom surface of the steel plate; and through holes b are formed in two ends of one diameter of the steel plate respectively. The auxiliary device solves the problems of great time consumption, large infection risk and high operative difficulty index existing in the manner for treating front and back cruciate ligament tibial attachment point avulsion fractures.

The invention discloses a minitype surrounding joint injury restoring system and a locking bone fracture plate thereof. The minitype surrounding joint injury restoring system is mainly composed of the locking bone fracture plate, a locking bone jointing fixing piece, a suturing thread and/or an artificial ligament. The locking bone jointing fixing piece is used for fixing the locking bone fracture plate to a bone, and a structure for locating and fixing the suturing thread and/or the artificial ligament is arranged on the locking bone fracture plate and/or the locking bone jointing fixing piece. According to the minitype surrounding joint injury restoring system, torn soft tissue can be effectively sutured and repaired through the suturing thread and/or the artificial ligament, meanwhile, avulsion fractures following soft tissue tearing can be effectively restored through the locking bone fracture plate, and soft tissue injuries around the surrounding joint or following surrounding joint fractures of different degrees can be restored at the same time through one product.

The invention relates to a ligament tibia dead point avulsion fracture fixing device, and the device comprises a first fixed block, a second fixed block and a suture, the first fixed block, the secondfixed block and the suture are used in a matched mode, a plurality of wings extend out of the periphery of the first fixed block and the periphery of the second fixed block, concave areas are formedbetween the wings, and clamping grooves are formed in the concave areas of the first fixed block. Holes are formed in the concave areas of the second fixed blocks. Through an arthroscope technology, tissues near a fracture block are cleaned to expose a fracture broken end; a tunnel is dug and penetrates through the bone block to the broken end of the fracture; the first fixed block is arranged ata tunnel portal on the inner side of the tibia, and the second fixed block is arranged at a tunnel portal at the fractured end; two arc-shaped rope loops are formed at the other end of the suture; thetwo arc-shaped rope loops penetrate through the tunnel and are arranged in the two opposite clamping grooves of the first fixed block in a sleeved mode respectively; and sewing thread end can be tightened. The device can be matched with an arthroscope to realize minimally invasive fixation of a fracture broken end, a small incision shortens postoperative rehabilitation time of a patient, and painand treatment cost of the patient are reduced.

The invention discloses a calcaneus locking plate applied to tendo calcaneus avulsion fracture. The calcaneus locking plate comprises a calcaneus tubercle locking portion fitted with calcaneus tubercle, a calcaneus outer side face locking portion fitted with the outer side face of calcaneus and a calcaneus upper face locking portion fitted with the upper face of calcaneus, the calcaneus tubercle locking portion and the calcaneus upper face locking portion are connected at two ends of the calcaneus outer side face locking portion respectively, a locking hole is formed in each of the calcaneus tubercle locking portion, the calcaneus outer side face locking portion and the calcaneus upper face locking portion, and multiple suture line holes for calcaneus suture lines to penetrate are formed in the calcaneus tubercle locking portion. The calcaneus locking plate can effectively fix calcaneus fracture blocks and resist traction of tendo calcaneus.

The invention discloses a fixing suspension device for a posterior cruciate ligament avulsion fracture reduction surgery and an operation method. a) Knee joint cavity posterior mediastinal tissues and avulsion bone block surrounding fascia tissues need to be cleaned in the surgery to facilitate fracture exposure and reduction in the surgery; b) after avulsion bone block reduction, an ACL reconstruction dead point positioner needs to be used for holding, a 4.5 mm positioning rod needs to drill out from the middle part of a bone block, a PDS wire is introduced along the inside of the positioning rod, and the additional use of a wire feeding device is not needed; and c) during fixation, a wire ring is forcibly tensioned at a knee bending position of about 90 degrees and is extruded and fixed, so that the posterior cruciate ligament is in the most relaxed state, a fracture block and a bone bed can keep tight fit to maintain stable reduction of the bone block. The operation steps are few, the operation is simple and easy to implement, fracture reduction and fixation are firm and reliable, when the joint moves, the fracture end can slightly move, the BO principle of fracture healing is met, and fracture healing is facilitated, rehabilitation exercises can be performed as soon as possible to recover the joint function.

The invention discloses an anatomical hook plate at the rear edge of the tibial plateau. The two ends of the head of the bone plate extend outwards, and the ends of the two ends are arc-shaped to form a fixed plate. Screw holes are arranged in the horizontal direction, and screw holes are evenly distributed in the transverse direction of the surface of the fixing plate. The plate surface of the bone set plate is not flat, and the central part of the bone set plate is slightly raised. There are two tibial hooks, the upper end of the hook is pointed, and the lower end of the hook gradually expands to form a triangular shape as a whole. The invention has the advantages of simple structure, firm fixation, convenient operation, and can effectively fix tibial plateau fractures and posterior cruciate ligament avulsion fractures.

The invention relates to a device for fixing avulsion fracture of anterior cruciate ligament tibia insertion. The device comprises a flexible mesh sheet body and two first fixing lines which are slidably connected to the mesh sheet body. One end of the first fixing line protrudes to one side of the mesh sheet body, and the other end of the first fixing line extendes from the other side of the meshsheet body; a plurality of pairs of the second fixing lines A and the second fixing lines B are disposed between the adjacent first fixing lines, and one end of the second fixing line A is fixed on the first side of the mesh sheet body, one end of the second fixing line B is fixed to the second side of the mesh sheet body, and the first side and the second side are opposite and both are located between the adjacent first fixing lines. The device has the advantages of simple structure, convenient insertion, and simple operation, shortens operation time of fracture reduction and fixation, simplifies operation and fixes firmly, is suitable for various types of avulsion fractures of the anterior cruciate ligament tibia insertion, and is easy to manufacture, and the material is cheap, which greatly reduces the cost and reduces the burden of medical expenses.

The invention discloses a toothed screw assembly for a cure of an avulsion fracture. The toothed screw assembly comprises a screw pad, a locating screw and a locking screw. The top of the screw pad is provided with a locating hole. The bottom of the screw pad is provided with a plurality of clamping teeth and a fixing arm. According to the toothed screw assembly for the cure of the avulsion fracture, the screw pad, the clamping teeth and the fixing arm form a shape which is similar to the external shape of a fracture bone so that an injured part is well protected; being a thin screw, the locating screw can play a locating role and can not hurt the avulsion bone; being coarse threads, the threads on the head part of the locking thread can firmly claw the whole body of the assembly in the position of the injured part; and the locating screw and the locking screw are in fit connection with the screw pad and the fixing arm through threads so that phenomena of looseness of the screws can not happen after long-time utilization.

The invention discloses a posterior cruciate ligament avulsion fracture fixation apparatus and relates to the technical field of medical instruments. The cruciate ligament avulsion fracture fixation apparatus comprises a handle, a long tube, a draw string and a bone reset fixing mechanism; the handle which is of a hollow tubular structure is arranged at one end of the long tube, and the inner cavity of the handle is communicated with the inside of the long tube; the bone reset fixing mechanism is fittingly mounted at the other end of the long tube; one end of the draw string sequentially penetrates the inner cavity of the handle and the inner cavity of the long tube so as to be connected with the bone reset fixing mechanism; the bone reset fixing mechanism comprises a top plate, a short tube and a plurality of fastener strips, the short tube is arranged at one side of the top plate, one end of the short tube is disposed in the long tube, the short tube and the long tube are in threadedconnection, the fastener strips are distributed at one side of the top plate along the outer ring of the short tube, and one ends of the fastener strips are all hinged to the top plate.

The invention discloses a medical internal fixator for posterior cruciate ligament lower dead center avulsion fracture. The medical internal fixator comprises a fixator body. The fixer body comprises a bent part and a straight part; the bent part and the straight part are of an integrated plate type structure; the straight part is bent to the bent part in the reverse direction of the straight part, and the bent part is arc-shaped; a semi-arc notch is formed in the top end of the bent part; the top ends of the two side walls of the notch extend forwards to be bent in a barb shape. And a plurality of through holes through which locking screws can pass are sequentially formed in the surface of the fixator body from the semi-arc notch to the tail end of the straight part. According to the fixator, fracture reduction, firm and effective fixation and minimally invasive surgery can be achieved; and the problem that the strength of the internal fixation material is reduced due to manual bending of the steel plate during an operation can be avoided.

The invention discloses a drilling assembly and positioner for tibial plateau ankle intertrochanteric avulsion fracture. The drilling assembly is applied to the positioner for tibial plateau ankle intertrochanteric avulsion fracture. The positioner comprises a positioning sleeve. The drilling assembly comprises a sleeve and a drilling needle. The drilling assembly can movably penetrate through the positioning sleeve; the drilling needle comprises a long shaft section and a conical structure; the long shaft section is arranged in the sleeve; the large end of the conical structure is in buckled shaft connection with the sleeve; and the two ends, away from the conical structure and clamped to the conical structure, of the sleeve are each provided with a clamping protrusion structure capable of clamping the sleeve into the bone. The drilling assembly can conveniently and accurately carry out hole finding and threading actions, and an operation can be conveniently and smoothly carried out.

The invention discloses a knee joint anterior cruciate ligament tibial insertion avulsion fracture reduction fixing and guiding device which comprises a sleeve; a frame body is arranged in the sleeve, and the frame body is of a cuboid structure with two transparent ends; a sliding groove is formed in the upper edge of the frame body, a moving block is arranged on the sliding groove, one side of the moving block is connected with a connecting rod, the other end of the connecting rod extends into the frame body, the other end of the connecting rod is connected with an adjusting piece, the other end of the adjusting piece is connected with an inner cylinder, the inner cylinder is fixed into the frame body through the adjusting piece, the lower end of the inner cylinder is flush with the sleeve, and the inner cylinder can horizontally move in the frame body through the adjusting piece; the sleeve with the positioning hole is arranged, an avulsion fracture block is fixed through the fixing needle, then the guide needle is guided in through the inner cylinder arranged in the sleeve, the avulsion fracture block is prevented from shifting when the guide needle is driven in, and the accuracy of guide needle positioning is improved.

The invention discloses a minimally invasive phalanx avulsion fracture reduction internal fixation device. The minimally invasive phalanx avulsion fracture reduction internal fixation device comprisestwo row nail fixator assemblies and a connecting mechanism. A fixing frame, a threaded rod, an upper inserting plate hole, a lower inserting plate hole, a double-row nail guiding inserting plate, a single-row nail guiding inserting plate, a second guiding hole, a guiding hole, a row nail fixing inserting plate, a fixing hole, a connecting plate, an inserting groove, an inserting groove hole, a supporting frame, a rotary knob, a double-row nail special pressurizing rod, a single-row nail special pressurizing rod, a single-row nail, a through groove and a double-row nail are mutually cooperated, therefore, fracture reduction and fixation can be facilitated, and patient rehabilitation is promoted. Moreover, the economic cost is low, the fixator assemblies can be repeatedly used after being disinfected and sterilized, the economic cost is saved, meanwhile, the operation difficulty is simplified, the operation time is shortened, wounds are small, blood supply around an avulsion fracture block is protected, reduction loss after internal fixation is prevented, first-stage healing of avulsion fracture is achieved, complications such as nail path infection are avoided, and great convenience is brought to a user.

The invention relates to the technical field of medical apparatuses, in particular to a fixing device for coracoacromial ligament reconstruction, acromioclavicular joint dislocation, knee joint ligament reconstruction, joint dislocation of intra-articular avulsion fracture or ligament reconstruction. The fixing device comprises at least one bandage body and at least one main locking head. The fixing device has the advantages that the length of an artificial ligament can be adjusted according to actual conditions of patients' individual differences, the device not only can be used for the joint dislocation or the ligament reconstruction, but also is suitable for reduction and reconstruction work such as the reduction and reconstruction of the acromioclavicular joint dislocation, the knee joint ligament reconstruction and the reduction and reconstruction of the intra-articular avulsion fracture.