CN105520775A - Fracture fixation device capable of realizing longitudinal dynamic sliding - Google Patents
Fracture fixation device capable of realizing longitudinal dynamic sliding Download PDFInfo
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- CN105520775A CN105520775A CN201511024114.0A CN201511024114A CN105520775A CN 105520775 A CN105520775 A CN 105520775A CN 201511024114 A CN201511024114 A CN 201511024114A CN 105520775 A CN105520775 A CN 105520775A
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- steel plate
- screw
- fracture
- bar steel
- slide
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8004—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with means for distracting or compressing the bone or bones
- A61B17/8014—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with means for distracting or compressing the bone or bones the extension or compression force being caused by interaction of the plate hole and the screws
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/683—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin comprising bone transfixation elements, e.g. bolt with a distal cooperating element such as a nut
Abstract
The invention provides a fracture fixation device capable of realizing longitudinal dynamic sliding. According to the fracture fixation device, slide rails are arranged on a strip steel plate, sliding chutes are arranged on block steel plates, and the block steel plates sleeve the slide rails of the strip steel plate through the sliding chutes, and can slide dynamically and longitudinally on the strip steel plate; screw holes are reserved in the block steel plates, and the threads of the screw holes are matched with those on the tail of screws so that the block steel plates and the screws are integrated into a whole; grooves are reserved on the strip steel plate, and the screws are screwed into the skeleton after sequentially passing through the screw holes in the block steel plates and the grooves in the strip steel plate, and can slide in the grooves of the strip steel plate. According to the fracture fixation device, the fixation is stable, the healing time is short, the dynamic pressing and extension adjustment are integrated into a whole, and the healing and growth of the diseased bone are promoted; the limiting sliding fixation technology is adopted, the fracture end can be pressed continuously in the healing process of the fracture, no stress shielding is generated, and the longitudinal mechanical stress and final motion can be conducted on the fracture end, therefore, the fracture healing is promoted, the difficulties that the skeletal development is limited and the fracture healing is slow in the traditional static fixation model are solved, the treatment and rehabilitation time of patients are shortened, the burden of the patients is alleviated, and the fracture fixation device belongs to an ideal matched fixation apparatus specially used for treating limb fracture.
Description
Technical field
The present invention relates to is medical apparatus and instruments, says it is bone surgery internal fixators tool more in detail, and the pressurization or extend of can longitudinally dynamically sliding regulates, for the fracture fixation device that can longitudinally dynamically slide of the reduction of the fracture, fixing, rehabilitation.
Background technology
As everyone knows, human body, animal body fracture, bone splits, bone are had no progeny to be needed first to be resetted, insert built-in Interal fixation or external Boards wall again by fracture site, after the trophophase that heals after a while, then is laid down by the fixture of built-in steel plate or external clamping plate; Traditional built-in steel plate is a monoblock design, that steel plate is fixed by screws on skeleton, make steel plate and skeleton in aggregates, all directions all cannot be movable, longitudinal stress required in fracture healing process is also stopped in the lump simultaneously, thus result in a lot of negative consequence: adult, fracture site face can not get fine motion, and healing time extends, even nonunion, need operative treatment again, and steel plate indwelling time is long in vivo, bring misery and economic loss to patient; At budding teenager, in the fracture fixation phase, skeleton development is subject to constraint and the suppression of steel plate, causes the lifelong disabilities such as both limbs Length discrepancy.
Current basic research shows, fracture repair process is a complicated biological processes, for ensureing carrying out smoothly of reparation process, the built-in fixture of fracture, needs to provide good physiological mechanics environment.Existing built-in fixture is by after the reduction of the fracture, to be fractured by screw fixing as a whole with inside-fixture (steel plate, intramedullary pin etc.), shortcoming is also to be stopped in the lump by longitudinally-moving simultaneously, thus cannot pressurize dynamically with bone healing process or extend adjustment.According to current Basic Research Results, summing up existing fixed model subject matter has:
1, cannot persistent pressure fracture site: current inside-fixture, for static state is fixed, after fixing by the reduction of the fracture, skeleton and inside-fixture form be one cannot be movable overall, cannot produce by patient stand or longitudinal knocking limbs the broken ends of fractured bone pressurization continued, and the broken ends of fractured bone gap retained in reduction of the fracture process, and the early stage broken ends of fractured bone bone resorption of fracture repair and the broken ends of fractured bone gap of causing all cannot be eliminated, thus producing the separation of the broken ends of fractured bone, bone conduction interrupts, and affects union of fracture.
2, stress shielding: because inside-fixture is overall fixing, and it is too hard, block the stress stimulation of fracture end, the growth making fracture roll over healing or bone lacks stress stimulation and causes bone remoulding to postpone, fracture site healing place mechanical property is not enough, occurs that internal fixtion easily the serious problems such as secondary fracture occurs after removing clinically.
3, the mechanical stress of longitudinal direction cannot be conducted to fracture end: research at present shows that longitudinal mechanical stimulus can induce union of fracture, is a kind of effective mode without invasive assistant reinforcement union of fracture.And existing internal fixation material, all the mechanical stress conduction generation of longitudinal direction is blocked, the mechanical stress of limbs is caused to conduct to fracture end, cause " longitudinal mechanical stimulus can promote union of fracture " this theoretical dwell extensively approved for academia in the aspect of basic research, unconverted to clinical middle application.In the patient of nonunion after inserting intramedullary needle internal fixtion, the first-selected treating method that locking nail is removed of most scholar, union of fracture is promoted to conduct longitudinal stress, but so just the anti-rotation cannot taken into account needed for fracture is fixed, fracture can be caused to rotate, cause limbs to rotate malunion, cause patient disabilities.
4, fracture end lacks fine motion: research shows that fracture site slight movement and fine motion (micromovement) can promote formation and the calcification of callus, PGE2 burst size is impelled to increase, induction local mesenchymal propagation, be divided into osteoblast, increase its metabolic activity, facilitate union of fracture.Existing inside-fixture is static fixing, cannot provide fine motion, affect union of fracture for fracture end.
5, cannot extend with bone growth: for the child and the adolescent patient that are in growth and development stage, internal fixtion in maintenance fracture simultaneously, should not limit the longitudinal growth of skeleton, otherwise temporary or permanent growth inhibited may be caused, cause patient's both limbs to grow Length discrepancy, existing inside-fixture cannot take into account the demand of this type of patient.
Current fracture fixation pattern can not meet the instructions for use of patient treatment and operation, therefore, both effectively fracture site can be fixed in the urgent need to developing one, bone healing, growth needs can be helped again, realize dynamic pressurization or extend the fracture fixation pattern regulated meeting clinical actual demand, to alleviate patient suffering and financial burden, increase social benefit.
Summary of the invention
The object of the present invention is to provide one can eliminate above-mentioned shortcoming, have rational in infrastructure, simple to operate, location is firm, healing time is short, patient suffering is light, financial burden is little, good effect, can collect dynamic pressurization and be adjusted to one with extension, promotes the fracture fixation device that can longitudinally dynamically slide of the features such as disease knitting and growth.Especially the technique for fixing of spacing slip is adopted, the mobilism slide block of indwelling trough of belt on built-in fixation steel plate, sustainable in the agglutination of fracture fracture end can be pressurizeed, do not produce stress shielding, the mechanical stress of longitudinal direction and fine motion can be conducted to fracture end and promote union of fracture, achieve dynamic pressurization and extend the immobilization efficiencies regulated, wrap-around combination simultaneously makes bar steel plate more firm with the combination of the block plate of band chute, same implantation surgery is simpler, accurately, shorten healing time widely, decrease the slight illness of patient, improve skeleton Quality of rehabilitation and therapeutic effect.Fracture compared with dynamic fixation steel plate with number of patent application 201410579965.0, after bar steel plate of the present invention and the block plate of band chute organically combine, mechanical strength is high, large with the dynamic sliding distance of steel plate of slot pitch scope that is long, that be suitable for, the fracture being particularly suitable for the required fixing mechanical strength such as syntripsis, unstable fracture, load-bearing bone fracture higher uses, and has outstanding clinical therapeutic efficacy.The difficulties such as traditional static fixed model skeleton development is limited, union of fracture is slow are equally also captured, reduce iatrogenic injury, reduce intracorporeal indwelling time and operation wound, shorten treatment and the rehabilitation duration of patient, alleviating the financial burden of patient, is the special fixed apparatus of desirable treatment limb fracture.
The fracture fixation device that can longitudinally dynamically slide of the present invention, be be made up of bar steel plate, block plate, screw etc., bar steel plate leave slide rail, block plate leaves chute, block plate is enclosed within the slide rail of bar steel plate by chute, and block plate longitudinally dynamically can slide on bar steel plate; Block plate leaves screw hole, and the screw thread that tail followed closely by screw thread and the screw of screw hole mates, and block plate and screw can be made to be combined as a whole; Bar steel plate leaves groove, screw through after block plate screw hole by being screwed into skeleton after this groove, screw can slide in groove.Described bar steel plate leaves slide rail, block plate leaves chute, slide rail and chute match, and after bar steel plate is connected with chute by slide rail with block plate, block plate can slide on bar steel plate.Described bar steel plate leaves groove, and screw is screwed into skeleton through this groove, along with bone healing or growth screw slide in a groove, effectively overcomes the temporary or permanent suppression to bone growth and development.Described block plate leaves screw hole, the screw thread that tail followed closely by this screw hole and screw matches, and screw nail tail spiral shell is on the screw hole of block plate, and bar steel plate groove worn by ailhead, nail, be screwed into skeleton to be fixed, along with bone healing or growth can be slided in bar steel plate groove.Described screw is made up of ailhead, nail body, nail tail, and wherein, screw ailhead, nail body, nail tail are threaded, and nail tail screw thread and block plate screw hole screw thread match, and is threaded into skeleton with what follow closely bar and screw tip.Described bar steel plate groove shapes is that oblong or rectangle are oval circular or special-shaped.Described bar steel plate leaves groove, each steel plate at least leaves two grooves or multiple groove, with screw, bar steel plate and block plate are fixed on bone injury position.The shape of described bar steel plate, size, size and stay the quantity of groove and bone injury anatomic form to match.Described screw is plain screw, forcing screw, lock screw.Above-mentioned parts are made up of medical macromolecular materials or medical metal material or stainless steel material.
Furtherly, the fracture fixation device that can longitudinally dynamically slide has outstanding slide rail bar steel plate by one piece of both sides, and polylith both sides have chute and can match with bar steel plate bilateral slide rail and the formation such as block plate, screw can slided along it.Bar steel plate leaves and can pass wherein and the groove slided for screw, the both sides of bar steel plate are outstanding forms slide rail, can slide for the chute of block plate along it; Screw hole is left at block plate center, and with mechanical whorl, the mechanical whorl following closely tail with screw matches, and chute is extended in block plate both sides, matches and can slide along it with bar steel plate bilateral slide rail; Screw is divided into ailhead, nail body, nail tail, ailhead leads screw successively through screw hole, the groove of bar steel plate, the skeleton of block plate, with fixing fracture, nail body is threaded and can be screwed into skeleton, nail tail has the screw thread matched with the mechanical whorl of block plate central screw hole, screw and block plate can be made to be combined as a whole, screw can be limited again simultaneously and infinitely be screwed into, cause block plate be pressed in tension on bar steel plate and cannot slide.Though above-mentioned parts claim steel plate, be industry common name, non-ly refer in particular to as Steel material, can be made up of medical macromolecular materials or medical metal material or stainless steel material.
The fracture fixation device that can longitudinally dynamically slide of the present invention, it is a kind of novel bone fracture internal fixing device, that is: the fracture fixation device that can longitudinally dynamically slide, changing conventional steel plates is the static Fixed Design mode of integrated monolithic steel plate, and the screw of the block plate slided on bar steel plate and along bar steel plate two wood side-guide by one block of bar steel plate, polylith and nail tail band mechanical whorl forms.First block plate is positioned on bar steel plate according to use number time fixing, (if need dynamic pressurized, then chute is positioned over away from the position in the middle part of steel plate according to needing the correct position needing the screw hole at block plate center to slide to bar steel plate groove of dynamic pressurized or prolongation; If need extend, be then positioned over the position of chute in the middle part of steel plate), then by screw successively by screw hole, the groove of bar steel plate, the skeleton of block plate, with fixing fracture.The texture material of inner fixing device of the present invention with conventional inner fixing device, and can improve with the improvement of internal fixation material.The supporting operating theater instruments of middle need is used to comprise: the conventional bone surgery sets such as screwdriver inserted by screw pilot sleeve, screw tap, depth finder, electric drill, screw.
It is as follows that the process of being combined further illustrates its structure:
1, bar steel plate is made up of the slide rail of 1 bar steel plate body, multiple groove and both sides.Steel plate body is the elongated steel sheet providing anti-side side and rotation stress of fracturing; Groove is that in bar steel plate, stringer is distributed with multiple microscler vacancy, allows screw to pass through with fix bone, and within it slides; Slide rail is the outstanding formation in both sides of bar steel plate, can slide for the chute of block plate along it.
2, block plate is made up of the screw hole at block plate body, center and both sides chute.Block plate body is block structure, for carrying and the screw hole of Integration Center and both sides chute; Screw hole is positioned at the middle part of block plate body, and with mechanical whorl, the mechanical whorl following closely tail with screw matches, and can pass for screw and be fixed on skeleton; Chute is that block plate body both sides are prolonged and formed, and matches and can slide along it with bar steel plate bilateral slide rail;
3, screw screw is made up of ailhead, nail body, nail tail, and ailhead is sharp structure; Nail is threaded structure as cylindricality, can be screwed into skeleton; Nail tail has the screw thread matched with the mechanical whorl of block plate central screw hole, and screw and block plate can be made to be combined as a whole, and can limit again screw simultaneously and infinitely be screwed into, cause block plate be pressed in tension on bar steel plate and cannot slide.
In using, first block plate is positioned on bar steel plate according to use number, then bar steel plate and block plate are positioned over the skeleton that need fix, the relative position of the screw hole of adjustment block steel plate and bar steel plate groove that needs according to dynamic pressurized or prolongation (if need dynamic pressurized, is then positioned over chute away from the position in the middle part of steel plate; If need extend, be then positioned over the position of chute in the middle part of steel plate), then by screw successively by screw hole, the groove of bar steel plate, the skeleton of block plate, with fixing fracture.
The general form of described bar steel plate is elongated steel sheet, and can do anatomical compatibility design change according to the anatomical features of different parts appendicular skeleton, makes it the Morphological Characteristics more meeting institute's fix bone.As condyles or the osteoepiphyseal portion of fracture, or bend with skeleton physiology and suitably adjust radian and size.
Described bar steel plate according to circumstances, can carry out the fixed form combined with traditional plain screw hole, forcing screw hole, screw hole, to improve curative effect.As: the near-end of fracture adopts dynamic moving Interal fixation, and far-end adopts plain screw hole, forcing screw hole, lock screw fixing hole.Described bar steel plate, between two groups of adjacent grooves, part that can be removed material, to make the stress equilibrium of steel plate, and can in carrying out suitable pre-bending process herein when fixing fracture, more to meet skeleton curvature.
Using method
After anesthesia onset, according to fracture site, suitable body is adopted to be positioned on operating-table, prolong routine operation approach, appear fracture site, remove soft tissue and the hematoma of fracture site intercalation, reseting fracture, the relative position of the screw hole of adjustment block steel plate and bar steel plate groove that needs according to dynamic pressurized or prolongation (if need dynamic pressurized, is then positioned over bar steel plate groove away from the position in the middle part of steel plate; Extend if need, then be positioned over the position of bar steel plate groove in the middle part of steel plate), conventional screw pilot sleeve, screw tap, depth finder, electric drill, the screw of using inserts screwdriver by screw successively by screw hole, the groove of bar steel plate, the skeleton of block plate, with fixing fracture, layer-by-layer suture operative incision, put drain, aseptic dressing is wrapped up.
The static state that this bone fracture internal fixing device corrects previously internal fixtion fixes theory, and embody a kind of dynamically fixing theory completely newly: allow pressurize dynamically according to fracture needs or extend adjustment, can fracture agglutination in heavy burden sustainable to fracture end pressurization, do not produce stress shielding, the mechanical stress of longitudinal direction and fine motion can be conducted to fracture end promote union of fracture, more can meet and embody the biomechanics requirement of union of fracture, be beneficial to union of fracture, promote callus according to stress arrangement and reinvent bone trabecula; And at growth and development stage teenager, child patient, can extend with bone growth, the suppression of bone growth and development can not be caused.
The invention solves for a long time, the longitudinal stress changing the static fixed form existence of built-in steel plate is blocked, keep out longitudinal mechanical stress and fine motion, the deficiencies such as the self-sow of restriction skeleton, in identical groove slot pitch situation, sliding distance of the present invention and number of patent application 201410579965.0 are fractured longer compared with dynamic fixation steel plate, the scope be suitable for is large, after bar steel plate of the present invention and the block plate of band chute organically combine, mechanical strength is high, be particularly suitable for syntripsis, unstable fracture, the fracture that the required fixing mechanical strength such as load-bearing bone fracture is higher uses, there is outstanding clinical therapeutic efficacy.Have effectively achieved dynamic pressurization and extend the immobilization efficiencies regulated, effectively can fix fracture site, more can help bone healing, growth needs, implantation surgery is simple to operate, and accuracy is high, shortens healing time, decrease the slight illness of patient, improve skeleton Quality of rehabilitation and therapeutic effect.The difficulties such as traditional static fixed model skeleton development is limited, union of fracture is slow are captured, reduce iatrogenic injury, reduce intracorporeal indwelling time and operation wound, shorten treatment and the rehabilitation duration of patient, alleviate the financial burden of patient, meeting clinical actual demand, is the special supporting fixed apparatus of desirable treatment limb fracture.
Accompanying drawing explanation
Below for accompanying drawing illustrates, but the present invention is not limited to legend.
Fig. 1: bar steel plate perspective view;
Fig. 2: the block plate perspective view of trough of belt;
Fig. 3: screw perspective view;
Fig. 4: bar steel plate plan structure schematic diagram;
Fig. 5: structural representation looked up by bar steel plate;
Fig. 6: the main TV structure schematic diagram of bar steel plate;
Fig. 7: bar steel plate side TV structure schematic diagram;
Fig. 8: block plate plan structure schematic diagram;
Fig. 9: block plate looks up structural representation;
Figure 10: block plate side-looking structural representation;
Figure 11: the main TV structure schematic diagram of block plate;
Figure 12: the main TV structure schematic diagram of screw;
Figure 13: screw perspective view;
Figure 14: bar steel plate, block plate, screw association plan structure schematic diagram;
Figure 15: bar steel plate, block plate, screw association look up structural representation;
Figure 16: the main TV structure schematic diagram of bar steel plate, block plate, screw association;
Figure 17: bar steel plate, block plate, screw association perspective view;
Figure 18: the top view (top view show bar steel plate expands in nearly joint and uses conventional screw hole, so that the better anatomic form adapting to periarticular skeleton) that bar steel plate mates according to periarticular anatomic form with block plate
Figure 19: the side view (side view show bar steel plate has certain valgus angle better to adapt to the anatomic form of periarticular skeleton in nearly joint) that bar steel plate mates according to periarticular anatomic form with block plate
1-bar steel plate, 2-block plate, 3-screw, 4-bar steel plate body, 5-groove, 6-slide rail, 7-block plate body, 8-screw hole, 9-chute, 10-ailhead, 11-follow closely body, 12-follows closely tail, the nearly articular lamella of 13-, 14-screw hole.
Detailed description of the invention
Further illustrate combinative structure of the present invention by reference to the accompanying drawings:
A kind of fracture fixation device that can longitudinally dynamically slide as shown in the figure, longitudinally dynamically slip fracture fixation device is the bar steel plate 1 by one piece of both sides with outstanding slide rail 6, and polylith both sides have chute 9 and can match with bar steel plate bilateral slide rail 6 and the formation such as block plate 2, screw 3 can slided along it.Bar steel plate 1 leaves and can pass wherein and the groove 5 slided for screw 3, slide rail 6 is left in the both sides of bar steel plate 1, can slide for the chute 9 of block plate 2 along it; Screw hole 8 is left at block plate 2 center, and with mechanical whorl, matches with the mechanical whorl of the nail tail 12 of screw 3, and chute 9 is extended in block plate 2 both sides, matches and can slide along it with bar steel plate 1 bilateral slide rail 6; Screw 3 is divided into ailhead 10, nail body 11, nail tail 12, ailhead 10 leads screw 3 successively through screw hole 8,1 groove 5 of bar steel plate, the skeleton of block plate 2, with fixing fracture, nail body 11 is threaded and can be screwed into skeleton, nail tail 12 has the screw thread matched with the mechanical whorl of block plate 2 central screw hole 8, screw 3 and block plate 2 can be made to be combined as a whole, screw 3 can be limited again simultaneously and infinitely be screwed into, cause block plate 2 be pressed in tension on bar steel plate 1 and cannot slide.Though above-mentioned parts claim steel plate, be industry common name, non-ly refer in particular to as Steel material, can be made up of medical macromolecular materials or medical metal material or stainless steel material.
Described bar steel plate 1 is made up of the slide rail 6 of a bar steel plate body 4, multiple groove 5 and both sides.Steel plate body 4 is the elongated steel sheet providing anti-side side and rotation stress of fracturing; Groove 5 is distributed with multiple microscler vacancy for stringer in bar steel plate body 4, allows screw 3 to pass through with fix bone, and within it slides; Slide rail 6 is the outstanding formation in both sides of bar steel plate body 4, can slide for the chute 9 of block plate 2 along it.
Described block plate 2 is made up of the screw hole 8 at block plate body 7, center and both sides chute 9.Block plate body 7 is block structure, for carrying and the screw hole 8 of Integration Center and both sides chute 9; Screw hole 8 is positioned at the middle part of block plate body 7, and with mechanical whorl, the mechanical whorl following closely tail 12 with screw 3 matches, and can pass for screw 3 and be fixed on skeleton; Chute 9, for block plate body 7 both sides are prolonged and formed, matches with bar steel plate 1 bilateral slide rail 6 and can slide along it;
Described screw 3 is made up of ailhead 10, nail body 11, nail tail 12, and ailhead 10 be sharp structure, can with groove on nail tail end face, so that use instrument spiral is tightened; Nail body 11 is threaded structure for cylindricality, can be screwed into skeleton; Nail tail 12 has the screw thread matched with the mechanical whorl of block plate 2 central screw hole 8, and screw 3 and block plate 2 can be made to be combined as a whole, and can limit again screw 3 simultaneously and infinitely be screwed into, cause block plate 2 be pressed in tension on bar steel plate 1 and cannot slide.
In using, first block plate 2 is positioned on bar steel plate 1 according to use number, then bar steel plate 1 and block plate 2 are positioned over the skeleton that need fix, the screw hole 8 of adjustment block steel plate 2 that needs according to dynamic pressurized or prolongation (if need dynamic pressurized, is then positioned over chute 5 away from the position in the middle part of steel plate with the relative position of bar steel plate 1 groove 5; Extend if need, be then positioned over the position of chute 5 in the middle part of steel plate), then screw 3 is passed through successively screw hole 8, the groove 5 of bar steel plate 1, the skeleton of block plate 2, with fixing fracture.
The general form of described bar steel plate 1 is elongated steel sheet, and can do anatomical compatibility design change according to the anatomical features of different parts appendicular skeleton, makes it the Morphological Characteristics more meeting institute's fix bone.As condyles or the osteoepiphyseal portion of fracture, or bend with skeleton physiology and suitably adjust radian and size.Described bar steel plate 1 according to circumstances, can carry out the fixed form combined with traditional plain screw hole, forcing screw hole, screw hole, to improve curative effect.As: the near-end of fracture adopts dynamic moving Interal fixation, and far-end adopts plain screw hole, forcing screw hole, lock screw fixing hole.Described bar steel plate 1, between two groups of adjacent grooves 5, part that can be removed material, to make the stress equilibrium of steel plate, and can in carrying out suitable pre-bending process herein when fixing fracture, more to meet skeleton curvature.
Bar steel plate mates according to periarticular anatomic form with block plate, bar steel plate expands position in nearly joint can use the nearly articular lamella 13 of band, use conventional screw hole 14, so that the better anatomic form adapting to periarticular skeleton, usual bar steel plate has certain valgus angle so that the better anatomic form adapting to periarticular skeleton in nearly joint.
Using method
After anesthesia onset, according to fracture site, suitable body is adopted to be positioned on operating-table, prolong routine operation approach, appear fracture site, remove soft tissue and the hematoma of fracture site intercalation, reseting fracture, the screw hole 8 of adjustment block steel plate 2 that needs according to dynamic pressurized or prolongation (if need dynamic pressurized, is then positioned over groove 5 away from the position in the middle part of steel plate with the relative position of bar steel plate 1 groove 5; Extend if need, then be positioned over the position of groove 5 in the middle part of steel plate), conventional screw pilot sleeve, screw tap, depth finder, electric drill, the screw of using inserts screwdriver by screw 3 successively by screw hole 8, the groove 5 of bar steel plate 1, the skeleton of block plate 2, with fixing fracture, layer-by-layer suture operative incision, put drain, aseptic dressing is wrapped up.
The static state that this bone fracture internal fixing device corrects previously internal fixtion fixes theory, and embody a kind of dynamically fixing theory completely newly: allow pressurize dynamically according to fracture needs or extend adjustment, can fracture agglutination in heavy burden sustainable to fracture end pressurization, do not produce stress shielding, the mechanical stress of longitudinal direction and fine motion can be conducted to fracture end promote union of fracture, more can meet and embody the biomechanics requirement of union of fracture, be beneficial to union of fracture, promote callus according to stress arrangement and reinvent bone trabecula; And at growth and development stage teenager, child patient, can extend with bone growth, the suppression of bone growth and development can not be caused.
The invention solves for a long time, the longitudinal stress changing the static fixed form existence of built-in steel plate is blocked, is kept out longitudinal mechanical stress and fine motion, the deficiencies such as the self-sow of restriction skeleton, achieve dynamic pressurization and extend the immobilization efficiencies regulated, both effectively can fix fracture site, bone healing, growth needs can be helped again, implantation surgery is simple to operate, and accuracy is high, shortens healing time, decrease the slight illness of patient, improve skeleton Quality of rehabilitation and therapeutic effect.The difficulties such as traditional static fixed model skeleton development is limited, union of fracture is slow are captured, reduce iatrogenic injury, reduce intracorporeal indwelling time and operation wound, shorten treatment and the rehabilitation duration of patient, alleviate the financial burden of patient, meeting clinical actual demand, is the special supporting fixed apparatus of desirable treatment limb fracture.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent arrangements conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. the fracture fixation device that can longitudinally dynamically slide, it is characterized in that being made up of bar steel plate, block plate, screw, bar steel plate leaves slide rail, block plate leaves chute, block plate is enclosed within the slide rail of bar steel plate by chute, and block plate longitudinally dynamically can slide on bar steel plate; Block plate leaves screw hole, and the screw thread that tail followed closely by screw thread and the screw of screw hole mates, and block plate and screw can be made to be combined as a whole; Bar steel plate leaves groove, screw through after block plate screw hole by being screwed into skeleton after this groove, screw can slide in groove.
2. the fracture fixation device that can longitudinally dynamically slide as claimed in claim 1, it is characterized in that described bar steel plate leaves slide rail, block plate leaves chute, and slide rail and chute match, after bar steel plate is connected with chute by slide rail with block plate, block plate can slide on bar steel plate.
3. the fracture fixation device that can longitudinally dynamically slide as claimed in claim 1 or 2, is characterized in that described bar steel plate leaves groove, and screw is screwed into skeleton through this groove, along with bone healing or growth screw slide in a groove.
4. the fracture fixation device that can longitudinally dynamically slide as claimed in claim 1 or 2, it is characterized in that described block plate leaves screw hole, the screw thread that tail followed closely by this screw hole and screw matches, screw nail tail spiral shell is on the screw hole of block plate, bar steel plate groove worn by ailhead, nail, be screwed into skeleton to be fixed, along with bone healing or growth can be slided in bar steel plate groove.
5. the fracture fixation device that can longitudinally dynamically slide as described in claim 1 or 3 or 4, it is characterized in that described screw is made up of ailhead, nail body, nail tail, wherein, screw ailhead, nail body, nail tail are threaded, nail tail screw thread and block plate screw hole screw thread match, and are threaded into skeleton with what follow closely bar and screw tip.
6. the fracture fixation device that can longitudinally dynamically slide as described in claim 1 or 2 or 3, is characterized in that described bar steel plate groove shapes is that oblong or rectangle are oval circular or special-shaped.
7. the fracture fixation device that the bone as described in claim 1 or 2 or 3 or 6 can longitudinally dynamically slide, it is characterized in that described bar steel plate leaves groove, each steel plate at least leaves two grooves or multiple groove, with screw, bar steel plate and block plate are fixed on bone injury position.
8. the fracture fixation device that can longitudinally dynamically slide as described in claim 1 or 2 or 3 or 6 or 7, it is characterized in that the shape of described bar steel plate, size, size and stay the quantity of groove and bone injury anatomic form to match.
9. the fracture fixation device that can longitudinally dynamically slide as described in claim 1 or 3 or 4 or 5 or 7, is characterized in that described screw is plain screw, forcing screw, lock screw.
10. the fracture fixation device that can longitudinally dynamically slide as claimed in claim 1, is characterized in that above-mentioned parts are made up of medical macromolecular materials or medical metal material or stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511024114.0A CN105520775A (en) | 2015-04-20 | 2015-12-31 | Fracture fixation device capable of realizing longitudinal dynamic sliding |
Applications Claiming Priority (3)
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Cited By (11)
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| CN106037907A (en) * | 2016-07-12 | 2016-10-26 | 山东大学齐鲁医院(青岛) | Growth plate peripheral built-in fixation device |
| CN107137137A (en) * | 2017-06-01 | 2017-09-08 | 成都贝施美医疗设备有限公司 | A kind of new spinal fixing device |
| CN108309427A (en) * | 2018-02-23 | 2018-07-24 | 张强 | It is a kind of controllably to continue locking compress Medical orthopedic steel plate |
| CN109043753A (en) * | 2018-09-07 | 2018-12-21 | 歌尔股份有限公司 | Watchband component and wrist-watch |
| CN109528288A (en) * | 2019-01-21 | 2019-03-29 | 北京爱康宜诚医疗器材有限公司 | Bone plate structure |
| CN110711053A (en) * | 2019-10-23 | 2020-01-21 | 天衍医疗器材有限公司 | Patella driver |
| CN111544104A (en) * | 2019-05-15 | 2020-08-18 | 华中科技大学同济医学院附属协和医院 | Mortise and tenon structure splicing type fracture reduction pressurization internal fixation device |
| CN112402000A (en) * | 2020-11-13 | 2021-02-26 | 山东中医药大学附属医院 | Steel plate insertion auxiliary device, steel plate automatic insertion system and control method |
| WO2021085789A1 (en) * | 2019-10-31 | 2021-05-06 | 유한회사 인터메디 | Device for fixing femoral trochanter |
| CN115211948A (en) * | 2022-07-13 | 2022-10-21 | 湖南仁馨生物技术有限公司 | Improved structure of support nail minimally invasive bone fracture plate |
| CN111544104B (en) * | 2019-05-15 | 2024-04-30 | 华中科技大学同济医学院附属协和医院 | Mortise and tenon structure spliced fracture reduction pressurizing internal fixing device |
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| CN106037907A (en) * | 2016-07-12 | 2016-10-26 | 山东大学齐鲁医院(青岛) | Growth plate peripheral built-in fixation device |
| CN107137137A (en) * | 2017-06-01 | 2017-09-08 | 成都贝施美医疗设备有限公司 | A kind of new spinal fixing device |
| CN107137137B (en) * | 2017-06-01 | 2023-06-06 | 成都贝施美医疗设备有限公司 | Novel backbone is fixed device |
| CN108309427A (en) * | 2018-02-23 | 2018-07-24 | 张强 | It is a kind of controllably to continue locking compress Medical orthopedic steel plate |
| CN109043753B (en) * | 2018-09-07 | 2021-04-16 | 歌尔股份有限公司 | Watchband assembly and watch |
| CN109043753A (en) * | 2018-09-07 | 2018-12-21 | 歌尔股份有限公司 | Watchband component and wrist-watch |
| CN109528288A (en) * | 2019-01-21 | 2019-03-29 | 北京爱康宜诚医疗器材有限公司 | Bone plate structure |
| CN111544104A (en) * | 2019-05-15 | 2020-08-18 | 华中科技大学同济医学院附属协和医院 | Mortise and tenon structure splicing type fracture reduction pressurization internal fixation device |
| CN111544104B (en) * | 2019-05-15 | 2024-04-30 | 华中科技大学同济医学院附属协和医院 | Mortise and tenon structure spliced fracture reduction pressurizing internal fixing device |
| CN110711053A (en) * | 2019-10-23 | 2020-01-21 | 天衍医疗器材有限公司 | Patella driver |
| WO2021085789A1 (en) * | 2019-10-31 | 2021-05-06 | 유한회사 인터메디 | Device for fixing femoral trochanter |
| KR20210051632A (en) * | 2019-10-31 | 2021-05-10 | 유한회사 인터메디 | Fixture for Trochanter of the Femur |
| KR102327691B1 (en) * | 2019-10-31 | 2021-11-18 | 유한회사 인터메디 | Fixture for Trochanter of the Femur |
| CN112402000A (en) * | 2020-11-13 | 2021-02-26 | 山东中医药大学附属医院 | Steel plate insertion auxiliary device, steel plate automatic insertion system and control method |
| CN115211948A (en) * | 2022-07-13 | 2022-10-21 | 湖南仁馨生物技术有限公司 | Improved structure of support nail minimally invasive bone fracture plate |
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