40 results about "Patella fracture" patented technology

The present invention provides a medical device applied for patella fracture repair. The medical device applied for the patella fracture repair comprises a rotating mechanism, a tensioning device anda power source arranged at a bottom part of the rotating mechanism and for providing power for the tensioning device, the tensioning device comprises a single wire head tensioning mechanism for tightening single head wire, a double wire head tensioning mechanism for tightening double head wire, and a tensioning control mechanism used for receiving the power by the power source and transmitting tothe single wire head tensioning mechanism/double wire head tensioning mechanism, the single wire head tensioning mechanism is located at one end of the rotating mechanism, the double wire head tensioning mechanism is located at the other end of the rotating mechanism, the single wire head tensioning mechanism is located in a working position, the double wire head tensioning mechanism is in an idleposition, the tensioning control mechanism can be arranged in a combining state and a separating state with the single wire head tensioning mechanism and double wire head tensioning mechanism in an inter-switchable manner, and under an initial state, the tensioning control mechanism is combined with the single wire head tensioning mechanism and separated with the double wire head tensioning mechanism.

The invention relates to a pressurization needle cable fixed system for patella fracture. The fixed system consists of a needle body, a steel cable and a guide needle. The needle body and the guide needle are connected to two ends of the steel cable. The needle body is a solid metal cylinder, and provided with an annular tail hole at the end which is not connected with the steel cable. The invention further provided application of the pressurization needle cable fixed system. Compared with the existing commercial common hollow pressurization screw or screw cable, pressurization needle cable fixed system provided by the invention is simple in installation, can apply pressure on a fracture end during the installation process, and balance pressure of each part of the needle cable during steel cable tension belt fixed due to sliding of the needle cable, so that the integral pressurizing effect is realized and the breakage risk of an implanted article is avoided. The system is free of screw-like sharp structures so that cutting between implanted articles or cutting of implanted article to peripheral tissues can be avoided as much as possible.

The invention discloses fracture reduction forceps with the adjustable locating guiding function. The fracture reduction forceps comprise a forceps handle and a forceps head, the forceps handle and the forceps head are connected, the forceps head is provided with the locating guiding device, the locating guiding device is provided with a guiding hole, and a Kirschner wire or a drill can be very conveniently inserted into the guiding hole to cut an inner fixing hole. The fracture reduction forceps are used for a fixing operation in patella fracture, and clamping and fixing in the front stage ofpatella fracture reduction and locating and guiding a penetrating hole can be achieved.

The invention relates to a patella fracture fixing device based on traumatology and orthopedics of traditional Chinese medicine and is applicable to undisplaced patella fracture. Patients suffering from fissural fractures or stellate fractures with small displacement can be purely utilize the patella fracture fixing device to fix the knee joints in an extending position, and patients transverse fractures with displacement within 1 cm can be treated through massage and then fix the knee joints in the extending position. The patella fracture fixing device has the advantages of being simple and flexible in application, low in production cost and capable of well meeting the individual demands of patients, embodies the characteristics of traumatology and orthopedics of traditional Chinese medicine and has wide application values.

The invention relates to an encircling fixator for curing patella fracture and belongs to the technical field of orthopedic medical instruments. The encircling fixator is used for avoiding various complicating diseases and accurately and firmly fixing reduction of the fracture. The invention adopts a technical scheme that: the encircling fixator consists of an encircling slice and side shifts; the encircling slice is a strip slice; the encircling slice is axially provided with radian matched with the upper ambitus and the lower ambitus of patella; both sides of the encircling slice are provided with a plurality of side shifts; the directions of the side shifts are along the upper surface and the lower surface of the patella; and the plate surface of the encircling slice is provided with a plurality of screw holes. The encircling fixation guider has the advantages that: the fixator can temporarily fix the reduction of the patella fracture in a surgery and can further adjust until anatomical reduction if x-rayed fluoroscopy shows that the reduction is dissatisfactory; the screw holes are convenient for the guide needles and screws to be imbedded accurately and finally be fixed firmly; and the encircling fixator can be used in minimally invasive surgeries, has a few soft tissue injuries, and is favorable for protecting blood circulation of the patella and healing fracture. The encircling fixator is a creative medical instrument for curing the patella fracture and is worth of being clinically popularized and applied in orthopaedic departments.

The invention discloses a patella fracture reduction guide device. The device comprises a first clamping groove (1) and a second clamping groove (2) which are arc-shaped or broken-line-shaped, concavesurfaces of the first clamping groove (1) and the second clamping groove (2) are close to each other in an XY plane, and the first clamping groove (1) and the second clamping groove (2) are detachably connected; the first clamping groove (1) and the second clamping groove (2) are each provided with at least one protrusion (3) used for supporting patella; and the first clamping groove (1) and thesecond clamping groove (2) are provided with at least two groups of guide holes (4) which correspond to each other and are used for guiding a kirschner wire. The patella fracture reduction guide device is simple in structure, capable of enabling the patella to be accurately reduced and enabling the kirschner wire to be accurately driven into the patella, easy to operate and convenient to apply andpopularize.

The invention relates to a patella bone fracture plate for treating patella fracture and belongs to the technical field of medical instruments. The patella bone fracture plate comprises a patella upper steel plate, a patella lower steel plate and a plurality of parallel patella steel plate screws, wherein the patella upper steel plate and the patella lower steel plate are connected through the patella steel plate screws, the number of the patella steel plate screws is two, a first bent hook component is arranged on the patella upper steel plate, the patella lower steel plate is provided with two bent hook components, and the position relationship of the first bent hook component and the second bent hook components is the corresponding position relationship. The patella bone fracture plate has the advantages that the remote end bone block can be effectively fixed, patients can carry out effective function exercise, in addition, the bone fracture displacement caused during the functional exercise is avoided, the limb function disability in different degrees is avoided, simplicity and practicability are realized, and in addition, the cost is low.

A cylindrical tension band pressurizing fixing apparatus for patellar fracture mainly comprises an outer sleeve, an inner rod, a primary tension band and a secondary tension band. The outer sleeve and the inner rod can be axially and freely sleeved together in a pluggable manner, and the primary tension band and the secondary tension band are sleeved on the outer sleeve and the inner rod. The cylindrical tension band pressurizing fixing apparatus for patellar fracture is a human body internal fracture inner fixing apparatus mainly used for patella transverse fracture or slightly comminuted patella fracture. The distance between the outer sleeve and the inner rod is shortened by the aid of tensioning of the tension bands, so that two fracture ends are fixed in a pressurized manner and are prevented from moving laterally, deformity of the two fracture ends is avoided, and fracture stability is maintained. Fracture boundaries can contact tightly, friction force is increased, fracture stability is increased, joints of a patient can be trained early, and fracture union is promoted.

The invention discloses reduction forceps for bone fracture with positioning and guiding functions. The reduction forceps are composed of forceps handles and forceps heads, the forceps handles are connected with the forceps heads which comprise the first forceps head and the second forceps head, the first forceps head and the second forceps head are provided with a first guide device and a secondguide device respectively, a first guide hole and a second guide hole are formed in the first guide device and the second guide device respectively, and the central line of the first guide hole is coincident with that of the second guide hole. In the reduction forceps, a Kirschner wire or a drill bit can be very conveniently inserted through the guide holes so as conduct internal fixing hole drilling. The reduction forceps are used in an internal fixation operation of patella fracture, and early-stage clamping and fixing of patella fracture reduction and through hole positioning and guiding can be achieved.

The invention discloses a handheld medical instrument for patella fracture repair. The device comprises a handheld base, a connecting mechanism, a double-thread-end tightening mechanism and a single-thread-end tightening mechanism; the handheld base can be quickly connected and disconnected with the double-thread-end tightening mechanism and the single-thread-end tightening mechanism through the connecting mechanism; and a modular connecting structure is adopted between the handheld base and the connecting mechanism. The handheld base is used for achieving position and posture adjustment of the double-thread-end tightening mechanism and the single-thread-end tightening mechanism, and driving force can be provided for tightening a steel wire; the two driving modes can be freely switched according to the actual condition of an operation and the use habit of medical personnel; the double-thread-end tightening mechanism, the single-thread-end tightening mechanism and the connecting mechanism also adopt a modular connecting structure, and rapid connection and disconnection can be achieved; and the double-thread-end tightening mechanism can tighten steel wires led out of double thread ends and steel wires led out of two single thread ends, and the single-thread-end tightening mechanism can tighten a steel wire led out of one single thread end.

The invention discloses a patella fracture internal fixation device. The patella fracture internal fixation device comprises a knee holding ring, patella nails, adjusting rope belts and an adjusting mechanism, wherein the edge of the knee holding ring is connected with the adjusting rope belts and/or fixing rope belts, the tail ends of the adjusting rope belts and/or fixing rope belts are fixedlyarranged at two ends of the corresponding patella nails in a sleeving manner, and the lengths of the two ends or the middle of the adjusting rope belts can be adjusted, so that each fixing rope belt and each adjusting rope belt are tensioned. The rope belts can be adjusted in the radial direction and can also rotate moderately along the knee holding ring, thus, the rope belts are suitable for selection of arrangement of nails at different positions, the constraint problems of the lengths of the rope belts and the hole positions at the ends of the belts do not need to be considered during nailarrangement, the optimal position can be found for nail arrangement, a positioning instrument is not needed, and only the rope belts need to be operated for tensioning adjustment after nail arrangement; and the operation process is simple and efficient.

The invention provides a patella fracture hollow screw cable locking system, and relates to the technical field of medical instruments. The patella fracture hollow screw cable locking system comprises a hollow screw, a fastening screw and a traction cable, the head end of the hollow screw is provided with internal threads, and the tail end of the hollow screw is provided with external threads. The tail end of the fastening screw is in threaded connection with the hollow screw through an internal thread; and the head end of the fastening screw is fixedly connected with the traction cable. According to the patella fracture hollow screw cable locking system, the hollow screw is adopted, a guide pin can be inserted through an internal through cavity of the hollow screw before a traction wire cable is placed, after reduction, a hollow drill for reaming is not needed, secondary placement of the screw is not needed, reduction fracture displacement is not needed, limited bone loss caused by secondary placement can be avoided, and the patella fracture hollow screw cable locking system is suitable for popularization and application. Meanwhile, incision reduction is not needed, and early rehabilitation after the patella operation is better facilitated. After the guide needle is pulled out, the traction cable and the hollow screw are stably connected through the fastening screw, and the success rate and effectiveness of the operation are further improved.

The invention discloses a design and use method of a personalized patella fracture surgery navigation template. The design and use method is used for improving fracture reduction quality and efficiency of comminuted patella. The method comprises the following steps of importing bilateral patella CT scanning data into a computer, respectively establishing 3D models of bilateral patella, mirroring a3D model of a healthy side patella, assisting virtual restoration of an affected side patella, and on the basis of the virtual restored 3D model of the subchondral bone of the patella, thickening thesubchondral bone of the patella to reach the thickness of a cartilage surface to form a cartilage surface morphology 3D model; and on the basis of the artificial virtual cartilage surface 3D model, thickening the cartilage surface of the patella to the thickness required by the surgical navigation template in a thickening manner, and finally, enabling the patella and the virtual cartilage surfaceto be subtracted in a Boolean subtraction manner, so that the design of the navigation template is completed. For displaced comminuted patella fractures, an upper half patella reduction navigation template, a lower half patella reduction navigation template and a full patella reduction navigation template need to be designed respectively, printed and formed by a 3D printer, disinfected and then used in an operation.

The invention provides a fixation device beneficial to the fixation and healing of patella fracture, and belongs to the technical field of medical instruments in the orthopedics department. The device is used for patella fixation after fracture. According to the technical scheme, the device is characterized in that the rear portion of a needle body of a fixation needle is provided with a limiting bulge, the portion, below the limiting bulge, of the needle body is provided with a groove, the groove is opposite to the limiting bulge, the groove is in a semi-arc shape, the diameter of the circular arc of the groove is matched with the diameter of a steel wire, and the portion, on the rear portion of the groove, of the needle body is provided with a breaking groove; a wire feeding plate is a long strip-type plate, the portion, in the length direction of the plate surface, of the wire feeding plate is in a curved arc shape, the curvature of the arc shape is matched with that of the upper surface of a patella, a push rod is connected with the rear end of the wire feeding plate, the rear end of the push rod is connected with a hand shank, a steel wire hole is formed in the rod body of the push rod, the lower bottom surface of the wire feeding plate is provided with a wire feeding groove in the length direction of the wire feeding plate, and the steel wire hole of the push rod is opposite to the wire feeding groove. The device is firstly provided for minimally invasive fixation of patella fracture and has the advantages of being simple in structure, convenient to operate and good in fixation effect, avoiding damage and being beneficial to fracture healing.

The invention provides a marrow nail for patellae. The marrow nail comprises a nail shank; the nail shank is provided with a first break-off groove and a second break-off groove; an intramedullary rodis between the first break-off groove and the second break-off groove; the end, near the first break-off groove, of the intramedullary rod is provided with a first threading hole; and the end, near the second break-off groove, of the intramedullary rod is provided with a second threading hole. The invention designs a special marrow nail for patella fracture; after a nail body passes through a patella, except the first threading hole and the second threading hole at two ends of the intramedullary rod, the remaining middle part stays in the patella, and the first break-off groove and the secondbreak-off groove are utilized to break off and separate parts respectively connected with the two ends of the intramedullary rod; the intramedullary rod fixes a fracture position by making multiple auxiliary steel wires thread through the first threading hole and the second threading hole, so that the fracture is stable and reliable to fix, and the technical problems that a slender rod connectedwith a top end of an intramedullary nail in the prior art is bent to form a ring to thread the auxiliary steel wires, and the ring formed by bending has poor closure, and has a gap, so that the auxiliary steel wires are prone to slip off are relieved.

The invention provides a patella fracture reduction guide device, which relates to the technical field of medical equipment, and comprises a seat body, a first clamping part and a second clamping part, the seat body is of a concave structure; the first clamping part is composed of four first sliding rods, a first clamping block, a second sliding rod, a connecting plate A and an adjusting rod A. An auxiliary block is of a right triangle block structure, the inclined face of the auxiliary block makes contact with the head end of the auxiliary block, when an adjusting rod A is rotated clockwise, a connecting plate B moves rightwards, at the moment, a second clamping block moves forwards under extrusion of the auxiliary block, and therefore stretching of the legs and the thigh fracture part of the patient is achieved; therefore, the fracture reduction time and the painful time of the patient are saved, and the problems that firstly, the painful time of the patient is long due to the fact that the efficiency is low during adjustment are solved; and secondly, a limiting structure is not adjusted, so that the pain degree of the patient is easily improved due to excessive operation when the intern operates.

The invention discloses an automatic leg lifting rehabilitation device for promoting blood circulation and removing acid after patella fracture treatment. The automatic leg lifting rehabilitation device comprises a support table, wherein a support is fixedly arranged on the support table; a swing box is fixedly arranged on the support; a swing cavity is formed in the swing box; a gear plate is arranged on the lower side of the swing cavity; and three connecting plates in annular array are fixedly arranged on end face of lower side of the gear plate. According to the automatic leg lifting rehabilitation device, before rehabilitation exercise is conducted after patella fracture treatment, hot compress can be conducted on legs which do not do exercise for a long time, the adhesion condition of the patella joints is eliminated, and blood distribution of the legs is smoother; and by means of an automatic leg swinging mechanism, a large amount of manpower consumed in the manual swinging process is avoided, a cold compress mechanism can eliminate the aching pain feeling of the legs in time after the legs are exercised, the better rehabilitation exercise effect can be achieved, and the patella fracture position obtained after treatment cannot be damaged.

The invention relates to the technical field of medical instruments, and provides a percutaneous patella fracture repository. The percutaneous patella fracture repository comprises a base and a plurality of horizontal rods arranged on the base through a movable mechanism, the movable mechanism comprises a lifting mechanism arranged on the base and a horizontal adjusting mechanism arranged on the lifting mechanism and ascending and descending along with the lifting mechanism, the horizontal rods move in a three-dimensional space by means of the horizontal adjusting mechanism and the lifting mechanism, the ends, facing a patella, of the horizontal rods are sharp ends, and the sharp ends are used for penetrating through the skin to abut against the patella. By means of the technical scheme, the problem that in the prior art, when patella fracture reduction is conducted, incision reduction is needed, and a patient is seriously wounded is solved.

The invention discloses a patella fracture threading device with threading and tightening knotting functions. The patella fracture threading device comprises a grab handle, a connecting rod, an arc section rod, a transition section, a micro motor, an outer cylinder, a rotating shaft rod, patella fixing claws and patella fixing clamps. The device can be used in an arthroscopic patella internal fixation operation, and also can be used in a tissue incision patella internal fixation operation; wherein the radian of the thread passing device can be automatically and flexibly adjusted according to the radian of the patella surface, so that the thread passing device can be better attached to the patella surface, and the obstruction during thread passing is reduced; according to the additionally designed knotting device part, a steel wire or a fixing line is tightened through electric control, and the position where the inner fixing line is tightened through medical thermoplastic resin is condensed and fixed. During knotting operation of an internal fixing wire or a steel wire, the tightening force can be monitored and mastered in real time, and an internal fixing wire knot can be pressed and fixed by using a plastic wire clamp; and the patella fixing clamp can be used for clamping and fixing the broken patella.

The invention provides a patella locking, pressurizing and internally-fixing device. The patella locking, pressurizing and internally-fixing device comprises a needle, a titanium cable and a nut. The needle comprises a needle tip and a needle body. The needle body is provided with an outer thread. The nut is of a hollow structure. An inner thread is arranged in a cavity in the front end of the nut and matched with the outer thread of the needle body. The tail end of the nut is provided with a first through hole and a second through hole which are communicated in the transverse direction. The diameter of the first through hole and the diameter of the second through hole are larger than the outer diameter of the titanium cable, and the first through hole and the second through hole provide a channel for the titanium cable to penetrate through. The patella locking, pressurizing and internally-fixing device has the advantages that by means of the thread connection of the needle body and the nut and locking of the titanium cable, the phenomenon that the needle body looses or disengages during the function exercise period after the patella fracture can be effectively prevented, the stability and effectiveness of the internally-fixing device are improved, and locking pressing and healing of the fracture end are facilitated; the needle tip is fixed into the round and blunt nut in a threaded connection mode, the acute stimulation of the internally-fixing object to the quadriceps femoris is avoided, and compliance of a patient to the postoperation function exercise is improved.