CN102217972B - Combined type pressurizing locking device applied on metrizable torque force for articulation fractures - Google Patents
Combined type pressurizing locking device applied on metrizable torque force for articulation fractures Download PDFInfo
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- CN102217972B CN102217972B CN 201110154706 CN201110154706A CN102217972B CN 102217972 B CN102217972 B CN 102217972B CN 201110154706 CN201110154706 CN 201110154706 CN 201110154706 A CN201110154706 A CN 201110154706A CN 102217972 B CN102217972 B CN 102217972B
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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
- A61B17/8052—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
- A61B17/8057—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded the interlocking form comprising a thread
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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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
- A61B17/863—Shanks, i.e. parts contacting bone tissue with thread interrupted or changing its form along shank, other than constant taper
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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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8685—Pins or screws or threaded wires; nuts therefor comprising multiple separate parts
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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
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8033—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers
- A61B17/8047—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers wherein the additional element surrounds the screw head in the plate hole
-
- 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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8645—Headless screws, e.g. ligament interference screws
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Abstract
The invention discloses a combined type pressurizing locking device applied on metrizable torque force for articulation fractures, which is characterized by consisting of a component (A), a component (B) and a locking bone fracture plate (C), wherein the component (A) consists of a thread (1), a thread (2) and a tail part (4); the thread (1) is conical; the thread (2) is coaxial; the tail part (4) has a prism structure; the component (B) consists of a thread (5) and a thread (7); the thread (7) is internally provided a hollow prism hole and is penetrated with the thread (5); the tail part (4) of the component (A) can penetrate through the interiors of the thread (5) and the thread (7); the component (A) and the component (B) are connected with the thread (5) through the thread (2); the component (B) and the locking bone fracture plate (C) are connected with a thread (8) through the thread (7); the thread pitch between the thread (2) and the thread (5) is larger than the thread pitch between the thread (7) and the thread (8); and the thread (2), the thread (5), the thread (7) and the thread (8) are coaxial. The combined type pressurizing locking device applied on the metrizable torque force for the articulation fractures has excellent angle coaxial stability and pressure between the metrizable torque force and fracture fragments simultaneously when pressurizing on the fracture fragments in articulations.
Description
Technical field
The present invention relates to bone fracture internal fixing device, relate in particular to the inner fixing device and the system that are applied to articular fracture.
Background technology
At present the Therapeutic Principle of articular fracture is as follows: blade plate supported to rebuild metaphysis, postoperative early functional exercise after intra-articular fracture needed the pressurization of noinvasive anatomical reduction, intra-articular fracture piece of articular surface and strong fixing, bone grafting and bone grafting.Rebuild joint metaphysis the need protection vigor of soft tissue and the integrity of peplos, the setting board of skeleton end fracture piece does not need anatomical reduction, as long as keep the axis of limbs, by the integrally-built relatively stable early functional exercise that allows control.
What use according to this principle design and in clinical middle main flow at present is locked pressurized bone plate and the use that mixes that mixes use or locking bone fracture plate and many pieces of cancellous bone screws of many pieces of cancellous bone screws.
Reset, realize that by sclerite in the cancellous bone screw subjoint intra-articular fracture piece pressurization and strong fixing principle are as follows: cancellous bone screw relies on blade plate or pad that the cortical bone sclerite of exerting pressure in the subjoint is resetted and the intra-articular fracture piece is formed pressurization and fixed effect, and wherein the cancellous bone screw afterbody does not have screw thread.Have angle stability by lock screw and locking bone fracture plate under articular surface, support metaphysis, the prevention articular surface is highly lost long term, and wherein the inner screwed screw of locking bone fracture plate is combined with the screw afterbody, and the screw afterbody has screw thread.
There is following shortcoming in the related medical apparatus of main flow Therapeutic Method and use at present:
1, be used for sclerite in the subjoint reset, realize the pressurization of intra-articular fracture piece also strong fixing cancellous bone screw have the problem of initial solid failure and solid failure at a specified future date.So-called initial solid failure refers to: the required torsion of cancellous bone screw that is screwed into the intra-articular fracture piece depends on the experience of operator, usually by overtorquing, cause the interface damage between screw plastic deformation, fracture or spongy bone and the screw thread, so that interior solid failure.So-called solid failure at a specified future date refers to: cancellous bone screw can not form with blade plate the integral body of a locking, and the angle axial stability can not be provided, and exists the screw sequential loosening behind the certain hour under bad stress, so that interior solid failure.
Although 2, lock screw can lock with locking bone fracture plate, can not subjoint in sclerite reset and pressor effect be provided, single lock screw resistance to plucking in spongy bone is exerted oneself less than single cancellous bone screw simultaneously.Therefore often need lock screw to use with cancellous bone screw, locking bone fracture plate or locked pressurized bone plate, but so still can't avoid disadvantages associated, and the screw number that implants increases greatly.
3, treatment is during articular fracture, is used in the subjoint sclerite to reset, realizes the pressurization of intra-articular fracture piece also strong fixing cancellous bone screw and support and rebuild metaphyseal lock screw system and can not form an integral body.Generally need to implant more inside-fixture to realize the Therapeutic Principle of articular fracture, still implanting more inside-fixture will cause larger operation wound, the higher shortcomings such as medical expense.The performance when treatment part articular fracture of these shortcomings is particularly outstanding, the locking bone fracture plate of the at present clinical main flow use for the treatment of part articular fracture is longer with respect to the length of fractured area, blade plate extends to key section, backbone section not fracture need to be screwed into screw equally, cause larger operation wound, long blade plate and skeleton attach the bad decline of internal fixation system mechanics effect and the soft tissue complication of also may causing simultaneously.
4, the required torsion of cancellous bone screw that is screwed into the intra-articular fracture piece depends on the operator experience, so there is the gradient of a learning curve, is unfavorable for the formation of the quantitative criteria of this technology, and the accumulation of experience depends on the experience of failure.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of device, and it can realize intra-articular fracture block reset, pressurization and strong fixing the time, has good angle axial stability, avoids because of the loosening interior fixing solid failure at a specified future date that causes of screw sequential; Quantize to be screwed into the required torsion of intra-articular fracture block assembly, interior fixing initial solid failure is avoided at the interface between effective protector and the spongy bone in the sclerite in auxiliary reset, pressurization and strong fixing joint; The articular surface hyaline cartilage of fracture quantizes the pressure between the intra-articular fracture piece, so that can realize real healing in appropriate pressure limit.
For solving the problems of the technologies described above, the invention provides following technical scheme, a kind of combined locking and pressurizing device that is applied to the quantized torsion of articular fracture: comprise assembly A, assembly B and locking bone fracture plate C, assembly A is by screw thread 1, screw thread 2 and afterbody 4 consist of, screw thread 1 is tapered thread, screw thread 2 is coaxial threaded, afterbody 4 is prismatic structure, assembly B is made of screw thread 5 and screw thread 7, screw thread 7 inside are hollow prism-shaped hole, it runs through mutually with screw thread 5, the afterbody 4 of assembly A can pass the inner hollow part of screw thread 5 and screw thread 7, and assembly A is connected with screw thread 5 by screw thread 2 with assembly B, and assembly B is connected with screw thread 8 with the screw thread 7 that locking bone fracture plate C passes through, screw thread 2,5 pitch is greater than screw thread 7,8 pitch, screw thread 2,5,7,8 is coaxial threaded.
As a kind of preferred version of the combined locking and pressurizing device of the quantized torsion that is applied to articular fracture of the present invention, wherein: the depth of thread of assembly A screw thread 1 and pitch are greater than the depth of thread and the pitch of screw thread 2.
A kind of preferred version as the combined locking and pressurizing device of the quantized torsion that is applied to articular fracture of the present invention, wherein: be connected by bar 3 between the screw thread 2 of described assembly A and the afterbody 4, the diameter of described bar 3 is less than the aperture in the hollow prism-shaped hole of the aperture of screw thread 5 and screw thread 7 inside.
A kind of preferred version as the combined locking and pressurizing device of the quantized torsion that is applied to articular fracture of the present invention, wherein: be provided with between screw thread 5 parts of described assembly B and the hollow prism-shaped hole of screw thread 7 inside excessive in threaded portion 6, screw thread 5 parts with excessively without the aperture of threaded portion 6 diameter greater than afterbody 4 and bar 3.
A kind of preferred version as the combined locking and pressurizing device of the quantized torsion that is applied to articular fracture of the present invention, wherein: described afterbody 4 prismatic structures and combined sleeve inner sleeve are complementary, and the hollow prism-shaped hole of screw thread 7 inside of described assembly B and the outer sleeve of combined sleeve are complementary.
Wherein, supporting specific purpose tool combined sleeve is divided into inside and outside sleeve: inner sleeve passes the hollow space in the assembly B, entangles the afterbody 4 of assembly A; Outer sleeve is connected with for example torque force device of torque spanner and so on, is complementary with the hollow prism-shaped hole of screw thread 7 inside of assembly B.
The technique effect that the present invention is useful comprises: one, screw thread 7,8 and the range difference subjoint that produces of screw thread 2,5 coaxial rotation in sclerite reset, form also strong fixed effect of intra-articular fracture piece pressurization, the screw thread 7 of assembly B is fixedly connected with the integral body that makes whole system form a locking with the screw thread 8 of locking bone fracture plate C simultaneously, has good angle axial stability.Thereby realized that " intra-articular fracture block reset, pressurization and strong fixing " is integrated with " form axial angle stability under the articular surface, support and also rebuild metaphysis ", and the overall pulling test that improves simultaneously whole device is exerted oneself; Two, adopt device of the present invention, the required torsion of device that then is screwed into the intra-articular fracture piece can rely on apparatus to carry out accurate Calculation, does not have the gradient of learning curve, and the formation that is conducive to this technology quantitative criteria reaches to be popularized; Three, the pressure between the quantification intra-articular fracture piece is so that the articular surface hyaline cartilage of fracture can realize real healing in appropriate pressure limit; Four, compare with present main flow medical skill and device, adopt less inside-fixture to implant and just can realize the Therapeutic Principle of articular fracture, and operation wound is less, medical expense significantly reduces; Five, when treatment needs the part articular fracture of operation, the locking bone fracture plate length that device of the present invention needs is shorter, reduce operation wound, short locking bone fracture plate can be better and the skeleton attaching, further improved the mechanical stability of whole device, effectively reduced blade plate and attach the bad soft tissue complication that causes.
Description of drawings
Fig. 1 is device user mode sketch map of the present invention.
Fig. 2 is the sketch map of assembly A.
Fig. 3 is the end view of assembly A afterbody 4.
Fig. 4 is assembly B partial schematic diagram.
Fig. 5 is the partial cutaway schematic of assembly B.
Fig. 6 is the end view of assembly B end.
Fig. 7 is the perspective diagram of locking bone fracture plate C.
Fig. 8 is assembly A, assembly B and locking bone fracture plate C connection diagram.
Fig. 9 is assembly A, assembly B connection diagram.
Figure 10 is the perspective diagram of assembly B.
Figure 11 is the sketch map of combined sleeve.
Figure 12 utilizes combined sleeve that the sketch map of device of the present invention is installed.
The specific embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing.
Such as Fig. 1, Fig. 8, Fig. 9, the combined locking and pressurizing device that is applied to the quantized torsion of articular fracture of the present invention is divided into three parts: assembly A, assembly B and locking bone fracture plate C.Figure 11, Figure 12 are combined sleeve sketch map and the sketch map that utilizes the combined sleeve installation, and wherein combined sleeve comprises inner sleeve D and outer sleeve E.
Such as Fig. 2, shown in Figure 3, assembly A is by screw thread 1, screw thread 2, and bar 3, afterbody 4 forms, and afterbody 4 is prismatic structure, for example hexagonal prismoid or analogous shape.No matter which kind of shape afterbody 4 is, its hole than the screw thread 5 of assembly B or 7 inside is all little, can pass the hole of screw thread 5 or 7 inside, and have certain interval, could fix afterbody 4 with the combined sleeve inner sleeve like this.Screw thread 1 is similar to the screw thread design of standard cancellous bone screw, and its depth of thread and pitch are larger with respect to screw thread 2.During use, screw thread 1 is screwed into offside intra-articular fracture piece, this moment assembly A and anchoring of offside intra-articular fracture piece.Screw thread 1 should be twisted fracture line, entered fully in the offside intra-articular fracture piece, and the resistance to plucking that screw thread 1 provides is exerted oneself and is better than lock screw, and its effect is similar to cancellous bone screw.The depth of thread of screw thread 2 and pitch is less than the depth of thread and the pitch of screw thread 1, and screw thread 2 is that sclerite resets and realizes the part of pressor effect between sclerite in the subjoint intrinsic articulation.Bar 3 mainly is the length variations that increases assembly A, and this part also can be replaced and is designed to screw thread 2, and the length of screw thread 2 designs a bit can solve length issue.Afterbody 4 is prismatic structure, and hexagonal prismoid for example can utilize this structure that assembly A is screwed in the sclerite on the one hand, can utilize on the other hand its inner sleeve with combined sleeve to mate, with fixation kit A.
Such as Fig. 4, Fig. 5, Fig. 6, shown in Figure 10, assembly B is by screw thread 5, excessively form without threaded portion 6, screw thread 7, and assembly B inside is hollow.Excessively provide the length variations of assembly B without the effect of threaded portion 6, it also can be designed to screw thread 5.Arranging excessively can provide potential mechanics advantage without threaded portion 6.Screw thread 5 is identical with pitch and the depth of thread of assembly A screw thread 2, has realized being connected of assembly A and assembly B being connected between screw thread 2 and the screw thread 5.The pitch of screw thread 7 is less than the pitch of screw thread 5, and screw thread 7 is parts of coupling assembling B and locking bone fracture plate C, also is that sclerite resets and realizes the part of sclerite pressor effect in the subjoint intrinsic articulation.Screw thread 7 inside are hollow prism-shaped hole, and for example interior hexagonal or analogous shape utilize combined sleeve assembly B can be connected in assembly A and locking bone fracture plate.The aperture in the hollow prism-shaped hole of screw thread 7 inside is greater than the diameter of assembly A afterbody 4, so that the inner sleeve of combined sleeve can pass the hollow space in the assembly B, when the outer sleeve runner assembly B of combined sleeve assembly A is fixed.
Such as Fig. 1 and shown in Figure 7, locking bone fracture plate C shape can be various, and it is provided with screw thread 8, and the degree of depth of its pitch and screw thread is identical with screw thread 7, is connected the locking that can realize between assembly B and the locking bone fracture plate C between screw thread 7 and the screw thread 8.
So-called homonymy intra-articular fracture piece refers to the contacted side with locking bone fracture plate C, and so-called offside intra-articular fracture piece refers to the sclerite corresponding with homonymy intra-articular fracture piece.
The use procedure of the combined locking and pressurizing device of relevant the quantized torsion that is applied to articular fracture of the present invention in the concrete operation:
The first step: by the standard procedures flow process, sterilization spreads single and exposes fracture by the standard procedures approach, resets and utilizes Kirschner wire or the temporary fixed fracture of reduction forceps, perspective to confirm to reset good;
Second step: first fixation kit A: punch to offside intra-articular fracture piece in the ipsilateral fracture piece with the special-purpose rotary head of operation, utilize the inner sleeve of the combined sleeve that is complementary with assembly A afterbody 4, screw thread 1 part of assembly A is screwed into offside intra-articular fracture piece, screw thread 1 should be twisted fracture line, enter in the offside intra-articular fracture piece this moment assembly A and anchoring of offside intra-articular fracture piece fully.The resistance to plucking that screw thread 1 provides is exerted oneself and is better than lock screw, and its effect is similar to cancellous bone screw.
The 3rd step: should be by corresponding device, for example pelvis-repositioning pincers or the fixedly locked blade plate C of screw avoid locking bone fracture plate C movement or rotation in the horizontal direction, make locking bone fracture plate C be close to the cortical bone surface of homonymy intra-articular fracture piece.The outer sleeve of combined sleeve is connected with for example torque force device of torque spanner and so on, in order to can detect at any time used torsion numerical value.The inner sleeve of combined sleeve is passed hollow space in the assembly B, entangle the afterbody 4 of assembly A, with fixation kit A, then rotate the outer sleeve of combined sleeve, so that constantly screw between assembly B and locking bone fracture plate C and the assembly A.In this process, the screw thread 7 of assembly B is screwed in the process of screw thread 8 of locking bone fracture plate C at the outer sleeve that utilizes combined sleeve, between the screw thread 5 of assembly B and the screw thread 2 of assembly A also in mutual rotation.When screw thread 7 and 8 rotated a circle, screw thread 2 and 5 also rotated a circle, but because screw thread 7 and 8 the pitch pitch less than screw thread 2 and 5, so screw thread 7 encloses the distance of advancing with 8 rotations one and encloses the distance of advancing less than screw thread 2 and 5 rotations one.Because assembly A is fixed, therefore screw thread 7,8 range differences that produce with screw thread 2,5 coaxial rotation will cause assembly B to drive locking bone fracture plate C to assembly A move toward one another, this move toward one another is eliminated the gap between the intra-articular fracture piece, and to forming pressor effect between the intra-articular fracture piece.Medical fundamentals research and clinical practice prove, if between the intra-articular fracture piece the fixing and pressure value of pressurization can be controlled in the appropriate scope be one of basic factor that realizes the healing of articular surface hyaline cartilage.Therefore when using torque spanner twisting combined sleeve, the torsion numerical value that attention applies, when arriving appropriate numerical value, for example just stop 2500 Ns the time firmly, so just can quantize pressure required between the pressurization of intra-articular fracture piece, quantize to be screwed into the required torsion of intra-articular fracture piece, more be conducive to the real healing of articular surface hyaline cartilage.
First with assembly A and the anchoring of offside intra-articular fracture piece; utilize the inner sleeve fixation kit A of combined sleeve; and then can also reach following purpose with what assembly B was connected with locking bone fracture plate C and assembly A: avoid assembly A to rotate in this course; cause the contiguous spongy bone of screw thread 1 cutting; effectively initial solid failure is prevented at the screw thread 1 of protection assembly A and the interface between the spongy bone.The end of assembly B and locking bone fracture plate C, avoid because of the loosening solid failure at a specified future date that produces of screw sequential also so that whole device has good angle axial stability by thread lock simultaneously.
The 4th step: cut off the part that assembly B is higher than locking bone fracture plate C by related equipment.
The 5th step: according to the operation needs, can be screwed into a plurality of devices of the present invention at the suitable screw hole of locking bone fracture plate by identical flow process; According to the operation needs, also can be screwed into the other types screw at the suitable screw hole of locking bone fracture plate, for example lock screw or standard os integumentale screw.
The 6th step: the perspective affirmation reduction of the fracture and interior fixed position are good again, are seamed to successively skin after flushing wound surface and the definite hemostasis.
Sclerite resets in the unique design of device of the present invention, subjoint, realizes synchronously the fixing and angle axial stability of intra-articular fracture pressurization, quantizes the pressure between the intra-articular fracture piece; And can quantize to be screwed into the required torsion of intra-articular fracture piece, to avoid device by overtorquing or excessively loose, cause interior fixedly primary failure; Also improve the resistance to plucking of device of the present invention in spongy bone and exert oneself, further improved the fixing reliability of implant system.
Therefore, this device sclerite in subjoint resets, when realizing that the strong pressurization of intra-articular fracture piece is fixing, can lock with blade plate, axial angle stability is provided, and resistance to plucking is exerted oneself and is better than present lock screw, the reliability of the whole fixedly fracture of Effective Raise system simultaneously, so that the required implants quantity of whole fixedly fracture system reduces, reduce medical treatment cost and patient suffering.Especially when treatment part articular fracture, locking bone fracture plate C does not need too much to extend to key section, the key section of fracture does not need to be screwed into too much screw, the length of required like this locking bone fracture plate C is less, be conducive to the attaching of locking bone fracture plate C and skeleton, further the mechanical stability of the whole fixedly fracture of raising system reduces operation wound, effectively reduces blade plate and attaches the bad soft tissue complication that causes.
It should be noted that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (5)
1. combined locking and pressurizing device that is applied to the quantized torsion of articular fracture, it is characterized in that: comprise the first assembly (A), the second assembly (B) and locking bone fracture plate (C), the first assembly (A) is by the first screw thread (1), the second screw thread (2) and afterbody (4) consist of, the first screw thread (1) is tapered thread, afterbody (4) is prismatic structure, the second assembly (B) is made of the 3rd screw thread (5) and the 4th screw thread (7), the 4th screw thread (7) inside is hollow prism-shaped hole, it runs through mutually with the 3rd screw thread (5), the afterbody (4) of the first assembly (A) can pass the inner hollow part of the 3rd screw thread (5) and the 4th screw thread (7), the first assembly (A) is connected with the 3rd screw thread (5) of the second assembly (B) by the second screw thread (2), the second assembly (B) is connected with the 5th screw thread (8) of locking bone fracture plate (C) by the 4th screw thread (7), the pitch of the second screw thread (2) and the 3rd screw thread (5) is respectively greater than the pitch of the 4th screw thread (7), also respectively greater than the pitch of the 5th screw thread (8), the second screw thread (2), the 3rd screw thread (5), the 4th screw thread (7), the 5th screw thread (8) all is coaxial threaded.
2. the combined locking and pressurizing device that is applied to the quantized torsion of articular fracture according to claim 1, it is characterized in that: the depth of thread of the first assembly (A) the first screw thread (1) is greater than the depth of thread of the second screw thread (2), and the pitch of the first assembly (A) the first screw thread (1) is greater than the pitch of the second screw thread (2).
3. the combined locking and pressurizing device that is applied to the quantized torsion of articular fracture according to claim 1, it is characterized in that: be connected by bar (3) between second screw thread (2) of described the first assembly (A) and the afterbody (4), the diameter of described bar (3) is less than the inner aperture of the 3rd screw thread (5), also less than the aperture in the inner hollow prism-shaped hole of the 4th screw thread (7).
4. the combined locking and pressurizing device of the quantized torsion that is applied to articular fracture described in according to claim 3, it is characterized in that: be provided with excessive in threaded portion (6) between the 3rd screw thread (5) part of described the second assembly (B) and the hollow prism-shaped hole of the 4th screw thread (7) inside, the 3rd screw thread (5) with excessively without the aperture of threaded portion (6) diameter greater than afterbody (4), also respectively greater than the diameter of bar (3).
5. the combined locking and pressurizing device that is applied to the quantized torsion of articular fracture according to claim 1, it is characterized in that: described afterbody (4) prismatic structure and combined sleeve inner sleeve are complementary, and the hollow prism-shaped hole that the 4th screw thread (7) of described the second assembly (B) is inner and the outer sleeve of combined sleeve are complementary.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110154706 CN102217972B (en) | 2011-06-09 | 2011-06-09 | Combined type pressurizing locking device applied on metrizable torque force for articulation fractures |
| PCT/CN2012/076544 WO2012167729A1 (en) | 2011-06-09 | 2012-06-06 | Torsion-measurable combination-type compression locking device for joint fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110154706 CN102217972B (en) | 2011-06-09 | 2011-06-09 | Combined type pressurizing locking device applied on metrizable torque force for articulation fractures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102217972A CN102217972A (en) | 2011-10-19 |
| CN102217972B true CN102217972B (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110154706 Expired - Fee Related CN102217972B (en) | 2011-06-09 | 2011-06-09 | Combined type pressurizing locking device applied on metrizable torque force for articulation fractures |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102217972B (en) |
| WO (1) | WO2012167729A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102217972B (en) * | 2011-06-09 | 2013-04-24 | 徐达强 | Combined type pressurizing locking device applied on metrizable torque force for articulation fractures |
| CN102319103B (en) * | 2011-09-15 | 2013-11-20 | 徐达强 | Pressurized locking combined screw system and special composite screwdriver |
| CN112367937A (en) * | 2018-06-29 | 2021-02-12 | 先锋外科技术公司 | Bone plating system |
| CN115192165A (en) * | 2022-06-13 | 2022-10-18 | 南方医科大学第三附属医院（广东省骨科研究院） | Compression device and internal fixation device for fracture reduction |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0550814A2 (en) * | 1991-12-07 | 1993-07-14 | Howmedica GmbH | Anchorage nail for the treatment of hollow bone fractures |
| CN1806766A (en) * | 2005-01-20 | 2006-07-26 | 朱俊岭 | Half-thread screw hole and screw hole positioning protector |
| CN201692039U (en) * | 2010-06-04 | 2011-01-05 | 谢辉晋 | Primary-secondary pull force screw |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0852156A (en) * | 1994-08-15 | 1996-02-27 | Asahi Optical Co Ltd | Surgical screw unit for fracture of bone |
| WO2006124987A1 (en) * | 2005-05-17 | 2006-11-23 | Smith & Nephew, Inc. | Axial compression fastener system |
| US8641740B2 (en) * | 2007-09-26 | 2014-02-04 | Zimmer, Gmbh | Bone anchoring device for the operative repair of fractures |
| CN101138514A (en) * | 2007-10-18 | 2008-03-12 | 王建华 | Neck of femur pressurizing locking fixer |
| CN102217972B (en) * | 2011-06-09 | 2013-04-24 | 徐达强 | Combined type pressurizing locking device applied on metrizable torque force for articulation fractures |
| CN202198655U (en) * | 2011-06-09 | 2012-04-25 | 徐达强 | Combination type locking compression device applied on quantifiable torsion of joint fracture |
| CN102319103B (en) * | 2011-09-15 | 2013-11-20 | 徐达强 | Pressurized locking combined screw system and special composite screwdriver |
-
2011
- 2011-06-09 CN CN 201110154706 patent/CN102217972B/en not_active Expired - Fee Related
-
2012
- 2012-06-06 WO PCT/CN2012/076544 patent/WO2012167729A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0550814A2 (en) * | 1991-12-07 | 1993-07-14 | Howmedica GmbH | Anchorage nail for the treatment of hollow bone fractures |
| CN1806766A (en) * | 2005-01-20 | 2006-07-26 | 朱俊岭 | Half-thread screw hole and screw hole positioning protector |
| CN201692039U (en) * | 2010-06-04 | 2011-01-05 | 谢辉晋 | Primary-secondary pull force screw |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012167729A1 (en) | 2012-12-13 |
| CN102217972A (en) | 2011-10-19 |
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