CN104546101A - Dynamic fixing steel plate for fracture - Google Patents
Dynamic fixing steel plate for fracture Download PDFInfo
- Publication number
- CN104546101A CN104546101A CN201410579965.0A CN201410579965A CN104546101A CN 104546101 A CN104546101 A CN 104546101A CN 201410579965 A CN201410579965 A CN 201410579965A CN 104546101 A CN104546101 A CN 104546101A
- Authority
- CN
- China
- Prior art keywords
- steel plate
- fracture
- screw
- dynamic
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
- A61B17/8023—Variable length plates adjustable in both directions
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention relates to a dynamic fixing steel plate for fracture. The dynamic fixing steel plate is characterized by comprising a frame steel plate, dynamic sliding steel plates and screws, wherein a groove is reserved in the frame steel plate; the dynamic sliding steel plate are arranged in the groove; the screws penetrate through the dynamic sliding base plate and are connected to a bone. The dynamic fixing steel plate disclosed by the invention has the characteristics of reasonable structure, positioning stability, short healing time, capability of integrating dynamic pressurizing and extension adjusting to promote the healing and growth of the bone, and the like. Especially, a fixation technology of limited sliding is adopted, a dynamic sliding block is resided on the internal fixing steel plate, the fracture end can be continuously pressurized in a fracture healing process without generating stress shielding, and the longitudinal mechanical stress and micromovement are conducted to the fracture end to promote fracture healing, so that the fixation effect by dynamic pressurizing and extension adjusting is realized, the difficulties that the bone development is limited, the bone healing is slow and the like in a traditional static fixation mode can be overcome, the treatment time and the healing time of a patient are shortened, the economic burden of the patient is reduced, and thus the dynamic fixing steel plate is an ideal special associated fixation apparatus for treating fracture of limbs.
Description
Technical field
The present invention relates to is medical apparatus and instruments, says it is about bone surgery internal fixators tool more in detail, and the pressurization of dynamic or extension regulate the dynamic fixation steel plate of fracture for location of fracturing, reset, rehabilitation.
Background technology
As everyone knows, human body, animal body fracture, bone splits, bone are had no progeny to be needed first by lesions position resets such as fracture, insert built-in Interal fixation or external Boards wall again, after the trophophase that heals after a while, then the fixture of built-in steel plate or external clamping plate is laid down; Traditional built-in steel plate is directly fixed on skeleton steel plate and screw, in agglutination, skeleton is originally in self-sow, the direct fixed form of this static state can restrict the self-sow of skeleton, cause physical disabilities because growing imbalance, bone stump face can not get fine motion simultaneously, 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.
Usually, fracture repair process is a complicated biological processes, comprises the biologically such as calcification and bone remoulding in the differentiation of pluripotent stem cell, cartilage.In order to ensure 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.), only play the effect of fixing fracture, cannot follow bone healing process pressurize dynamically or extend adjustment, existing fixed model subject matter has:
1, cannot persistent pressure fracture site: current inside-fixture, mostly be static fixing, 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 too strong, 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: there are some researches show that longitudinal mechanical stimulus can induce union of fracture, be 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, " longitudinal mechanical stimulus can promote union of fracture " this achievement in research extensively approved for academia is caused to stay 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, so just the anti-rotation cannot taken into account needed for fracture is fixed, fracture can be caused to rotate, cause malunion, cause patient disabilities.
4, fracture end lacks fine motion: research shows that fracture site controlling slight movement and fine motion (micromovement) can promote formation and the calcification of callus, PGE2 burst size is impelled to increase, produce secondary damage phenomenon (secondary injury phenomenon), induction local mesenchymal propagation, be divided into osteoblast, increase its metabolic activity, and increase the growth of fracture region blood capillary, 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 young patient being 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 limbs of patient to grow Length discrepancy, existing inside-fixture is the demand cannot taking into account this type of patient.
Current fracture fixation pattern can not meet the instructions for use of patient treatment and operation, therefore, in the urgent need to developing a kind of dedicated built-in fixed apparatus being specifically designed to skeleton reduction of the fracture rehabilitation, both effectively fracture site can be fixed, bone healing, growth needs can be helped again, meanwhile, 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 with extending and be adjusted to the dynamic fixation steel plate of fracture integrally promoting the features such as disease knitting and growth.Especially the technique for fixing of spacing slip is adopted, indwelling mobilism slide block 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 promotion union of fracture, achieve dynamic pressurization and extend the immobilization efficiencies regulated, 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, alleviating the financial burden of patient, is the special supporting fixed apparatus of desirable treatment limb fracture.
The dynamic fixation steel plate of fracture of the present invention is made up of framework steel plate, dynamically sliding plate, screw etc., and framework steel plate leaves groove, and at groove built with dynamic sliding plate, screw is connected on skeleton through dynamic sliding plate.Described groove is made up of upper groove and low groove, wherein, upper groove size is greater than low groove size, same or similar or the difformity of lower notches shape, upper groove bottom land becomes a groove platform with low groove castellated, on, low groove is through to be connected as a single entity, dynamic sliding plate embeds in upper groove, be seated on groove platform, so that dynamic sliding plate is with skeleton self-sow or rehabilitation, can slide along groove long side direction, can to fracture site pressurization and conduction longitudinal stress, the longitudinal growth of skeleton can not be limited, cause temporary or permanent growth inhibited, limbs of patient is caused to grow the deformity such as Length discrepancy.Described dynamic sliding plate forms with the steel plate of upper groove form fit, also can suitably extend inside and outside vacancy chute further, to increase stability.Dynamic sliding plate leaves screwed hole, and the screw thread of this screwed hole aperture and screw matches, and screw spiral shell is screwed into skeleton through low groove and is fixed on dynamic sliding plate.It is oval circular or special-shaped that described groove shapes can be oblong or rectangle, and suitably can adjust with steel plate stress demand.Upper groove is greater than low groove, lower notches form fit, is convenient to dynamic sliding plate and slides in upper groove.Described steel plate leaves groove on steel plate, each framework steel plate has two grooves at least, generally should leave multiple groove, with screw by dynamic sliding plate by framework Interal fixation at bone injury position.The shape of described framework steel plate, size, size and stay the quantity of groove and bone injury position to match.Described screw is made up of screw tail (head), shank of screw, screw tip, wherein, screw nail tail, nail bar are threaded, the screw thread of nail tail mates with the screw thread of dynamic sliding plate and is connected, the screw thread of nail bar is used for being screwed into skeleton, and the diameter of shank of screw is less than the diameter of low groove.Described screw can also select plain screw, forcing screw, lock screw.Above-mentioned parts are made up of medical macromolecular materials or medical metal material or stainless steel material.
A kind of new steel plate of the present invention is namely: the dynamically steel plate of fixing fracture, change the static Fixed Design mode that conventional steel plates is integrated monolithic steel plate, and be made up of the screw of a block frame steel plate, dynamic sliding plate that polylith can slide on framework steel plate vacancy groove and nail tail band mechanical whorl, first dynamic sliding plate is positioned on framework steel plate vacancy groove time fixing, after screw is fixed on skeleton by dynamic sliding plate, and dynamically sliding plate can slide by y direction in the vacancy chute of framework steel plate.The designed same conventional steel sheet of steel plate screw texture material, and can improve with the improvement of steel plate materials.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, framework steel plate is the elongated steel sheet providing anti-side side and rotation stress of fracturing, in framework steel plate, stringer is distributed with multiple vacancy chute (i.e. groove), each vacancy chute crown and on be divided into inside and outside vacancy chute (i.e. upper and lower groove), the comparatively outer vacancy chute of interior vacancy chute is little.The use of this structure is: outer vacancy chute (i.e. upper groove) can serve as chute effect, allow dynamic sliding plate embed go forward side by side Mobile state slide, and interior vacancy chute (i.e. low groove) allows screw to pass through with fix bone, and within it slide with dynamic sliding plate.
2, dynamically sliding plate is the steel plate being placed on the outer vacancy chute of framework steel plate, its width is compared with the wide smaller of the outer vacancy chute in framework steel plate and match, its length is little compared with the length of the outer vacancy chute in framework steel plate, and it can be allowed just to embed also longitudinal sliding motion in outer vacancy chute.The center of dynamic sliding plate is furnished with the nail of mechanical whorl, and to follow closely tail place mechanical whorl supporting with dynamic hold-down screw.
3, screw is a kind of screw locking junction steel plate and skeleton, and comprise a head of screw, shank of screw and screw tail, head of screw and shank of screw are threaded, and can be screwed into and hole, in the skeleton of tapping.Screw tail is with mechanical whorl, supporting with the mechanical whorl nail at described dynamic sliding plate center, and screw nail tail, with the hole matched with conventional bolt crewdriver attachment, allows to use screwdriver to carry out stubborn screw.Time fixing: the screw nail mechanical whorl of tail and the mechanical whorl at dynamic sliding plate center match, and head of screw, shank of screw are fixed on skeleton by vacancy chute in framework steel plate, by the interconnect function of screw, skeleton and dynamic moving steel plate are combined as a whole, the y direction that the two ends skeleton of fracture can retrain at framework steel plate vacancy groove with dynamic movable steel plate slides, complete pressurization or extend and (as needed pressurization, then all dynamic sliding plates are moved to the side away from fracture site of the outer vacancy groove of framework steel plate; As needed to extend, then all sides dynamic sliding plate being moved to the nearly fracture site of the outer vacancy groove of framework steel plate).
Length corresponding change with the fixed demand of fracture of described framework steel plate.
Width corresponding change with the fixed demand of fracture of described framework steel plate.
Thickness corresponding change with the fixed demand of fracture of described framework steel plate.
The general form of described framework steel plate is elongated steel sheet, but 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.
Vacancy chute quantity contained in described framework steel plate requires with steel plate length and fracture fixation and changes.
Vacancy chute contained in described framework steel plate can change vacancy chute shape as required.
The Aspect Ratio of the multiple inside and outside vacancy chute in described framework steel plate, can require and corresponding change according to the stress of extremity fracture different parts.
Multiple inside and outside vacancy chute in described framework steel plate accounts for the ratio of steel plate thickness, can require and corresponding change according to the stress of extremity fracture different parts.
The wide of interior vacancy chute in described framework steel plate will be large compared with the diameter of screw, passes be fixed on skeleton to allow screw; The length of the interior vacancy chute in described framework steel plate will be large compared with the diameter of screw, to allow screw longitudinal sliding motion in chute.
The shape of described dynamic sliding plate can make suitable change with framework steel plate vacancy chute, also can suitably extend inside and outside vacancy chute further, to increase stability.
Described screw is before boring is inserted, should first by the proper site of described dynamic sliding plate adjustment at the outer vacancy chute of framework steel plate, as: adjust dynamic sliding plate outside vacancy chute away from the position of fracture line, can occur to continue to produce fracture site separation away from the slip of fracture line by anti-dynamic sliding plate, but persistent pressure effect can be produced with limbs heavy burden; Adjust dynamic sliding plate outside vacancy chute near the position of fracture line, then can allow the corresponding prolongation with bone growth of dynamic moving steel plate, can not produce the bone growth of period of development youngsters and children patient and suppress.
Described screw is a kind of lock screw, screw tail is with mechanical whorl, supporting with the mechanical whorl nail at described dynamic sliding plate center, (end of screw thread is screwed to) after screw is screwed into the mechanical whorl of dynamic sliding plate completely, cannot continue to be screwed into, do not produce larger pressure to steel plate and skeleton, dynamic moving steel plate can not be oppressed in framework steel plate tension cannot longitudinal sliding motion, and steel plate also can not be made to oppress periosteum impact fracture blood fortune.
Described framework 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 framework steel plate, between two groups of adjacent vacancies, 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, remove the soft tissue of fracture end intercalation, reseting fracture, framework steel plate is placed in fracture is upper, dynamic sliding plate is positioned over one by one the multiple outer vacancy chute place in framework steel plate, dynamic sliding plate is slided into outer vacancy chute place correct position (as: adjust dynamic sliding plate outside vacancy chute away from the position of fracture line, anti-dynamic sliding plate can occur to continue the slip away from fracture line, and can longitudinal stress be conducted; Adjust dynamic sliding plate outside vacancy chute near the position of fracture line, then can allow the corresponding prolongation with bone growth of dynamic sliding plate), conventional use screw pilot sleeve, screw tap, depth finder, electric drill, screw to insert screwdriver screw is screwed into skeleton by dynamic sliding plate is fixed, layer-by-layer suture operative incision, put drain, aseptic dressing is wrapped up.
This steel plate allows 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 can extend with the bone growth of growth and development stage patient, be particularly suitable for the fractures for growth and development stage patient.Dynamic fixes the steel plate of fracture, the static state that previously internal fixtion corrected by this steel plate fixes theory, and embody a kind of dynamically fixing theory completely newly, can pressurize dynamically with fracture needs or extend adjustment, 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 promotion union of fracture, and can extend with the bone growth of growth and development stage patient, more can meet and embody the biomechanics requirement of union of fracture.
The dynamic fixation steel plate of fracture of the present invention solves for a long time, the self-sow of the restriction skeleton that the static fixed form of built-in steel plate exists, cause physical disabilities, bone stump face can not get fine motion, healing time extends, the problems such as patient suffering, especially the technique for fixing of spacing slip is adopted, both effectively fracture site can be fixed, bone healing can be helped again, growth needs, 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, implantation surgery is simple to operate, accuracy is high, shorten 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 steel plate of the present invention is not limited to legend.
Fig. 1: the main TV structure schematic diagram of dynamic fixation steel plate framework steel plate (oblong) of fracturing
Fig. 2: dynamic fixation steel plate framework steel plate (oblong) backsight structural representation of fracturing
Fig. 3: dynamic fixation steel plate framework steel plate (oblong) of fracturing looks up structural representation
Side-looking structural representation in Fig. 4: Fig. 3
Fig. 5: dynamic fixation steel plate framework steel plate (oblong) of fracturing (put down to) perspective view
Fig. 6: dynamic fixation steel plate framework steel plate (oblong) (side direction) perspective view of fracturing
Fig. 7: the dynamically main TV structure schematic diagram of sliding plate (oblong)
Fig. 8: dynamically sliding plate (oblong) looks up structural representation
Plan structure schematic diagram in Fig. 9: Fig. 7
Side-looking structural representation in Figure 10: Fig. 9
Figure 11: dynamically sliding plate (oblong) perspective view
Figure 12: screw plan structure schematic diagram
Figure 13: structural representation looked up by screw
Figure 14: the main TV structure schematic diagram of screw
Figure 15: screw perspective view
Figure 16: dynamic fixation steel plate framework steel plate (rectangle) perspective view of fracturing
1-framework steel plate, 2-upper groove, 3-low groove, the dynamic sliding plate of 4-, 5-screwed hole, 6-screw tail, 7-shank of screw, 8-screw tip.
Detailed description of the invention
Further illustrate combinative structure of the present invention by reference to the accompanying drawings:
The dynamic fixation steel plate of fracture is as shown in the figure new steel plate---the dynamically steel plate of fixing fracture, change the static Fixed Design mode that conventional steel plates is integrated monolithic steel plate, and by a block frame steel plate 1, polylith can in framework steel plate vacancy groove (i.e. lower notches) 2, the screw 6 of the dynamic moving steel plate 4 slided on 3 and nail tail band mechanical whorl, 7, 8 compositions, first dynamic moving steel plate 4 is positioned in the outer vacancy groove 2 of framework steel plate 1 time fixing, after screw is fixed on skeleton by dynamic moving steel plate 4, and dynamic moving steel plate 4 can slide along y direction in the outer vacancy chute (i.e. upper groove) 2 of framework steel plate 1.The designed same conventional steel sheet of steel plate screw texture material, and can improve with the improvement of steel plate materials.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.
In described framework steel plate 1, stringer is distributed with multiple vacancy chute, and each vacancy chute is divided into inside and outside vacancy chute on coronalplane, and the interior comparatively outer vacancy chute of vacancy chute (i.e. low groove) 3 (i.e. upper groove) 2 is little.This structure function is: outer vacancy chute 2 can serve as chute effect, and permission dynamic moving steel plate 4 embeds Mobile state of going forward side by side and slides, and interior vacancy chute 3 allows screw to pass through with fix bone.
Described dynamic moving steel plate 4 is for being placed on the steel plate of the outer vacancy chute 2 of framework steel plate, its width is compared with the wide smaller of the outer vacancy chute 2 in framework steel plate 1 and match, its length is little compared with the length of the outer vacancy chute 2 in framework steel plate 1, and it can be allowed just to embed also longitudinal sliding motion in outer vacancy chute.The center of dynamic moving steel plate 4 is furnished with the nail 5 of mechanical whorl, and to follow closely tail 6 place mechanical whorl supporting with screw.
Described screw is a kind of screw locking junction steel plate and skeleton, comprises a head of screw 6, shank of screw 7 and screw tip 8, and screw tail (head) 6 and screw 7 bar are threaded, and can be screwed into and hole, in the skeleton of tapping.Head of screw 6 is with mechanical whorl, supporting with the mechanical whorl nail 5 at described dynamic moving steel plate 4 center.Time fixing: the mechanical whorl of screw ailhead 6 and the mechanical whorl hole 5 at dynamic moving steel plate 4 center match, and screw tip 8, shank of screw 7 are fixed on skeleton by vacancy chute 3 in framework steel plate 1, by the interconnect function of screw, skeleton and dynamic moving steel plate 4 are combined as a whole, the y direction that the two ends skeleton of fracture can retrain at the outer vacancy groove 2 of framework steel plate 1 with dynamic movable steel plate 4 slides, complete pressurization or extend and (as needed pressurization, then all dynamic moving steel plates 4 are moved to the side away from fracture site of the outer vacancy groove 2 of framework steel plate 1; As needed to extend, then all sides dynamic moving steel plate 4 being moved to the nearly fracture site of framework steel plate 1 outer vacancy groove 2).
The length of described framework steel plate 1, width, thickness can the corresponding changes with the fixed demand of fracture.
The general form of described framework steel plate 1 is elongated steel sheet, but 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.
Vacancy chute 2,3 quantity contained in described framework steel plate 1 requires with steel plate length and fracture fixation and changes.
Vacancy chute 2,3 contained in described framework steel plate 1 can change vacancy chute shape as required.
The Aspect Ratio of the multiple inside and outside vacancy chute 2,3 in described framework steel plate 1, can require and corresponding change according to the stress of extremity fracture different parts.
Multiple inside and outside vacancy chute 2,3 in described framework steel plate 1 accounts for the ratio of steel plate thickness, can require and corresponding change according to the stress of extremity fracture different parts.
The wide of interior vacancy chute 3 in described framework steel plate 1 will be large compared with the diameter of screw 7,8, passes be fixed on skeleton to allow screw; The length of the interior vacancy chute 3 in described framework steel plate 1 will be large compared with the diameter of screw 7,8, to allow screw longitudinal sliding motion in chute.
The shape of described dynamic moving steel plate 4 can make suitable change with framework steel plate 1 vacancy chute 2,3, also can suitably extend to vacancy chute 2,3 is inside and outside, to increase stability further.
Before hold-down screw, should adjust dynamic moving steel plate 4 outside vacancy chute 2 away from the position of fracture line, can prevent dynamic moving steel plate 4 from occurring to continue to produce fracture site away from the slip of fracture line and be separated, but can bear a heavy burden with limbs and produce persistent pressure effect; Adjustment dynamic moving steel plate 4 outside vacancy chute 2 near the position of fracture line, then can allow the corresponding prolongation with bone growth of dynamic moving steel plate, can not produce suppress the bone growth of period of development youngsters and children patient.
Described screw head of screw 6 is with mechanical whorl, supporting with the mechanical whorl nail 5 at described dynamic moving steel plate 4 center, (end of screw thread is screwed to) after screw is screwed into the mechanical whorl nail 5 of dynamic moving steel plate 4 completely, cannot continue to be screwed into, larger pressure is not produced to steel plate and skeleton, dynamic moving steel plate 4 can not be oppressed in framework steel plate 1 tension cannot longitudinal sliding motion, and steel plate also can not be made to oppress periosteum impact fracture blood fortune.
Described framework 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 steel plate 4 to fix, and far-end adopts plain screw hole, forcing screw hole, lock screw fixing hole.
Described framework steel plate 1, between two groups of adjacent vacancies 2,3, can according to circumstances remove part 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.
When using in art, after anesthesia onset, according to fracture site, suitable body is adopted to be positioned on operating-table, prolong routine operation approach, appear fracture, remove the soft tissue of fracture end intercalation, reseting fracture, framework steel plate 1 is placed in fracture is upper, dynamic moving steel plate 4 is positioned over one by one multiple outer vacancy chute 2 place in framework steel plate 1, (as: adjustment dynamic moving steel plate 4 outside vacancy chute 2 makes to be screwed away from the position of fracture line dynamic moving steel plate 4 to be slided into the correct position at outer vacancy chute 2 place, can prevent dynamic moving steel plate 4 from occurring to continue the slip away from fracture line, and can longitudinal stress be conducted, adjustment dynamic moving steel plate 4 outside vacancy chute 2 makes to be screwed near the position of fracture line, then can allow dynamic moving steel plate 4 corresponding prolongation with bone growth), conventional use screw pilot sleeve, screw tap, depth finder, electric drill, screw to insert screwdriver screw is screwed into skeleton by dynamic moving steel plate 4 is fixed, layer-by-layer suture operative incision, put drain, aseptic dressing is wrapped up.This steel plate allows 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 can extend with the bone growth of growth and development stage patient, the fractures for growth and development stage patient is significant.
Claims (9)
1. the dynamic fixation steel plate of fracture, it is characterized in that being made up of framework steel plate, dynamically sliding plate, screw, framework steel plate leaves groove, and at groove built with dynamic sliding plate, screw is connected on skeleton through dynamic sliding plate.
2. the dynamic fixation steel plate of fracture as claimed in claim 1, it is characterized in that described groove is made up of upper groove and low groove, wherein, upper groove size is greater than low groove size, and upper groove bottom land becomes a groove platform with low groove castellated, and lower notches is through to be connected as a single entity, dynamic sliding plate embeds upper groove, be seated on groove platform, can slide along groove long side direction, screw slides along low groove long side direction.
3. the dynamic fixation steel plate of fracture as claimed in claim 1 or 2, it is characterized in that described dynamic sliding plate forms with the steel plate of upper groove form fit, dynamic sliding plate leaves screwed hole, the screw thread of this screwed hole aperture and screw matches, screw spiral shell is screwed into skeleton through low groove and is fixed on dynamic sliding plate, and can slide in low groove.
4. the dynamic fixation steel plate of fracture as claimed in claim 1 or 2 or 3 or 4, is characterized in that described groove shapes is that oblong or rectangle are oval circular or special-shaped.
5. the dynamic fixation steel plate of fracture as claimed in claim 1, it is characterized in that described framework steel plate leaves groove on steel plate, each framework steel plate at least leaves two grooves or multiple groove, with screw by dynamic sliding plate and framework Interal fixation at bone injury position.
6. the dynamic fixation steel plate of the fracture as described in claim 1 or 5, it is characterized in that the shape of described framework steel plate, size, size and stay the quantity of groove and bone injury position to match.
7. the dynamic fixation steel plate of fracture as described in claim 1 or 3 or 5, it is characterized in that described screw is made up of screw tail, shank of screw, screw tip, wherein, screw nail tail, nail bar and screw tip are threaded, the screwed hole of nail tail screwed hole aperture and dynamic sliding plate matches, and is threaded into skeleton with what follow closely bar and screw tip.
8. the dynamic fixation steel plate of fracture as described in claim 1 or 3 or 5 or 7, is characterized in that described screw is plain screw, forcing screw, lock screw.
9. the dynamic fixation steel plate of fracture 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 |
|---|---|---|---|
| CN201410579965.0A CN104546101A (en) | 2013-10-24 | 2014-10-24 | Dynamic fixing steel plate for fracture |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310519996 | 2013-10-24 | ||
| CN201410579965.0A CN104546101A (en) | 2013-10-24 | 2014-10-24 | Dynamic fixing steel plate for fracture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104546101A true CN104546101A (en) | 2015-04-29 |
Family
ID=53063921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410579965.0A Pending CN104546101A (en) | 2013-10-24 | 2014-10-24 | Dynamic fixing steel plate for fracture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104546101A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108309427A (en) * | 2018-02-23 | 2018-07-24 | 张强 | It is a kind of controllably to continue locking compress Medical orthopedic steel plate |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2201902Y (en) * | 1994-10-20 | 1995-06-28 | 刘松江 | Automatic pressure fixation plate |
| CN2477151Y (en) * | 2001-05-22 | 2002-02-20 | *** | Point contact type continuously pressuring inner fixed steel plate |
| US20020156474A1 (en) * | 2001-04-20 | 2002-10-24 | Michael Wack | Polyaxial locking plate |
| CN101147694A (en) * | 2006-06-28 | 2008-03-26 | 德普伊产品公司 | Cam/compression lock plate |
| WO2008113191A1 (en) * | 2007-03-22 | 2008-09-25 | Synthes Gmbh | Bone plate |
| CN101983617A (en) * | 2010-12-05 | 2011-03-09 | 明彩 | Trace slide type unstressed shielding steel plate |
| US20110276097A1 (en) * | 2010-05-07 | 2011-11-10 | Osteomed L.P. | System for Treating Bone Fractures |
| US20120191138A1 (en) * | 2011-01-21 | 2012-07-26 | Kiester P Douglas | Use of flexible bushings to promote healing and stable fracture compression in orthopedic trauma plates |
| US20130006310A1 (en) * | 2010-06-23 | 2013-01-03 | Apex Biomedical Company Llc | Flexible plate fixation of bone fractures |
-
2014
- 2014-10-24 CN CN201410579965.0A patent/CN104546101A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2201902Y (en) * | 1994-10-20 | 1995-06-28 | 刘松江 | Automatic pressure fixation plate |
| US20020156474A1 (en) * | 2001-04-20 | 2002-10-24 | Michael Wack | Polyaxial locking plate |
| CN2477151Y (en) * | 2001-05-22 | 2002-02-20 | *** | Point contact type continuously pressuring inner fixed steel plate |
| CN101147694A (en) * | 2006-06-28 | 2008-03-26 | 德普伊产品公司 | Cam/compression lock plate |
| WO2008113191A1 (en) * | 2007-03-22 | 2008-09-25 | Synthes Gmbh | Bone plate |
| US20110276097A1 (en) * | 2010-05-07 | 2011-11-10 | Osteomed L.P. | System for Treating Bone Fractures |
| US20130006310A1 (en) * | 2010-06-23 | 2013-01-03 | Apex Biomedical Company Llc | Flexible plate fixation of bone fractures |
| CN101983617A (en) * | 2010-12-05 | 2011-03-09 | 明彩 | Trace slide type unstressed shielding steel plate |
| US20120191138A1 (en) * | 2011-01-21 | 2012-07-26 | Kiester P Douglas | Use of flexible bushings to promote healing and stable fracture compression in orthopedic trauma plates |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108309427A (en) * | 2018-02-23 | 2018-07-24 | 张强 | It is a kind of controllably to continue locking compress Medical orthopedic steel plate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105520775A (en) | Fracture fixation device capable of realizing longitudinal dynamic sliding | |
| CN203042413U (en) | Universal locking and pressurizing bone plate | |
| CN105476701B (en) | A kind of bone handling device for femur large segmental bone defect | |
| CN103006302A (en) | Spherical universal joint for external bone fixator and regulating type bionic external bone fixator | |
| CN105078526A (en) | Apparatus for repairing ligament or tendon defect | |
| CN201755246U (en) | Changeable biological-type proximal femur steel plate | |
| CN201324284Y (en) | Proximal tibia lateral angulation fixed bone collecting plate | |
| CN201441446U (en) | Internal fixation system for proximal femoral locking plate | |
| CN202235630U (en) | Medical hollow forcing screw | |
| CN203425021U (en) | Tubular drawing pressurizing connection rod control device and external fixator | |
| CN106073871B (en) | It is applied to the external fixator that fibula is laterally moved | |
| CN203468727U (en) | Single screw type percutaneous zygopophysis pedicle screw internal fixation system | |
| CN104546101A (en) | Dynamic fixing steel plate for fracture | |
| CN204951039U (en) | Be used for restoreing defective device of ligament or tendon | |
| CN204072300U (en) | A kind of bone screw | |
| CN105877824A (en) | Micro lock external fixing device for treating hand or foot bone fracture | |
| CN101953712B (en) | Semi-self-locking acetabulum posterior wall and posterior column anatomical plate | |
| CN203634272U (en) | Sliding-groove vertebral plate forming titanium plate | |
| CN203244449U (en) | Fixator for ilium groin admission passage acetabulum square area fracture treatment | |
| CN201759661U (en) | Sternoclavicular joint dissecting steel plate | |
| CN203815554U (en) | Distal tibia external fixation device | |
| CN103417280A (en) | Tubular traction pressurization connecting rod control device and outer-bone fixing device | |
| CN209404874U (en) | A kind of minimally invasive fan-shaped osteotomy device | |
| CN106691565A (en) | Chicken breast and funnel chest integrated steel plate | |
| CN102125458A (en) | Hydroxyapatite coated hollow core titanium rod supporting femoral head for preventing collapse |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150429 |