CN105342685A - Dynamic locking screw and dynamic locking bone plate system - Google Patents
Dynamic locking screw and dynamic locking bone plate system Download PDFInfo
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- CN105342685A CN105342685A CN201510800717.9A CN201510800717A CN105342685A CN 105342685 A CN105342685 A CN 105342685A CN 201510800717 A CN201510800717 A CN 201510800717A CN 105342685 A CN105342685 A CN 105342685A
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- hole
- pin
- axostylus axostyle
- blind hole
- lock screw
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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
-
- 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
- A61B17/84—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
- A61B17/8635—Tips of screws
-
- 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
- A61B2017/564—Methods for bone or joint treatment
-
- 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
- A61B2017/8655—Pins or screws or threaded wires; nuts therefor with special features for locking in the bone
Abstract
The invention relates to a dynamic locking screw; a screw shaft is provided with a first pin hole, a shaft sleeve is provided with a second pin hole, and a fixing pin penetrates the first and second pin holes so as to fix the screw shaft with the shaft sleeve; a whole making process is simple and convenient. In the prior art, a screw shaft and a shaft sleeve are fixed in a welding mode, the gap between the screw shaft and the shaft sleeve is very narrow, so the manufacture is very difficult; the novel dynamic locking screw can solve the said technical problems; in addition, a gap is formed between a shaft rod and a blind hole; after the dynamic locking screw fixes the bone plate, in a human body recovery process, the gap between the shaft rod and the blind hole allows the bone plate and the bone can slightly move in certain scope along with human body activities, thus providing light stable stimulation effects on bone fractures, promoting porosis formation, and accelerating fracture healing.
Description
Technical field
The present invention relates to a kind of dynamic lock screw and use the dynamic locking bone fracture plate system of this dynamic lock screw, belong to the inner fixer field for synthetism in surgical operating instrument.
Background technology
The traditional method of fractures is by Interal fixation at fracture, is regrowed in the two ends of fracture, and restores appearance and the performance of skeleton next time in the protection of steel plate as far as possible.But conventional steel plates mainly relies on the frictional force of contact surface between skeleton-steel plate to realize the pressurization of steel plate to bone, along with axial dynamic load circulation increases, screw starts to relax and causes frictional force to reduce, and therefore the steel plate being finally fixed on fracture loosens.If before this loosens and occurs in union of fracture, unstable phenomenon will be there is in fracture, finally may cause and cause steel plate deformed or fracture, and then obtain the fixing fracture (such as metaphysis or osteoporotic epiphysis) of the fixing screw of maintenance more difficult, will be more prone to produce fracture wild effect.And simultaneously, while application conventional steel plates, researcher also finds, the fracture that conventional steel plates is applied can be produced line defect biology: oppress periosteum and affect fracture and/end blood supply.So current conventional steel plates osteopathy (such as pressurization and lag screw between sclerite) has quite high complication rate, comprises infection, Plate break, delayed union and disunion.
In order to solve the problem, researcher has invented locking bone fracture plate, become the important apparatus in fractures, but through this clinical practice in several years recently, existing locking bone fracture plate is fixed due to lock screw, drawback is also progressively leaked cruelly, especially be not suitable for using to many common fracture, locking bone fracture plate is difficult to fully reset to fracture simultaneously, especially the special blade plate of lock hole is only had, must reset to fracture before above-mentioned plate fixation, once lock screw hammers into epiphysis through blade plate, this epiphysis is not just by squeezing into other screw or using the modes such as pressue device to adjust position, thus form asymmetric callus.And simultaneously, another clinical problem often faced is that rigidly fixing of long bone fracture makes only to have minimum motion on cortical bone, therefore can form asymmetric callus.In order to overcome the problems referred to above, Chinese patent literature CN102697551A discloses one makes agglutination faster, more stable, the dynamic lock screw of low rigidity, comprise fixing hold-down screw and threaded sleeve, described threaded sleeve is arranged on outside described hold-down screw, described hold-down screw axle head is set to polished rod band external thread structure, described threaded sleeve inner surface adopts hollow belt female thread structure, the form that hold-down screw is connected by internal and external threads with threaded sleeve is fixed together, composition threaded sleeve can make the dynamic elasticity micromotion structure of axially-movable along hold-down screw, allow its fine motion within the specific limits, stable stimulation is provided between fracture end, promote callus formation, accelerate the healing of biological fracture.Although the fine motion that above-mentioned technology can be caused by the dynamic elasticity structure of threaded sleeve, promote callus formation and accelerate biological healing of fracturing, when but hold-down screw is screwed on the both sides skeleton of fracture by threaded sleeve, the two is easily fixed together by the screw thread cooperatively interacted, be difficult to formative dynamics elastic construction, thus can not callus formation be promoted, and then identical with single lock screw function.
In order to solve the problem, Chinese patent literature CN202458652U discloses a kind of dynamically lock screw, comprise taper thread nail axle and the threaded sleeve that taper thread follows closely axle can be inserted, taper thread nail axle has head, polished rod and connecting portion, head, polished rod and connecting portion are integrated mechanism, the diameter of polished rod is less than the diameter of connecting portion, blind hole is had in threaded sleeve, blind hole has the overhead matched with polished rod, mesopore and the lower opening of mating with connecting portion form, the diameter of lower opening is less than the diameter of mesopore, connecting portion and lower opening are fixedly connected by welding, polished rod and mesopore, gap is left between lower opening.Above-mentioned technology is by above-mentioned setting, have adjusted the rigidity of locking steel plate system, make load diatibution evenly, the motion of parallel direction can be transmitted, contribute to biological bone healing, locking bone fracture plate system along steel plate direction fine motion can rent skeleton circumferencial direction callus generate.But said structure welding process is complicated, be difficult to form industrialization; Meanwhile, the relation and between undeclared upper hole and polished rod.
Summary of the invention
For this reason, technical problem to be solved by this invention is the problem of existing dynamic lock screw complex manufacturing process, thus proposes the simple dynamically lock screw of a kind of making.
For solving the problems of the technologies described above, the invention provides a kind of dynamically lock screw, it comprises:
Nail axle, described nail axle comprises threaded portion;
Axle sleeve, described axle sleeve is provided with external screw thread, blind hole and ailhead;
Described threaded portion is connected with axostylus axostyle, and the end away from described threaded portion of described axostylus axostyle is provided with the first pin-and-hole;
The bottom sidewall of described blind hole is provided with the second pin-and-hole, and described second pin-and-hole matches with described first pin-and-hole;
It is inner that described axostylus axostyle is arranged on described blind hole, and described nail axle and described axle sleeve are fixed together by described first pin-and-hole and described second pin-and-hole by steady pin, and leave gap between described axostylus axostyle and described blind hole.
Preferably, the width in the gap between described axostylus axostyle and described blind hole is 0.01-0.3mm.
Further preferably, the width in the gap between described axostylus axostyle and described blind hole is 0.1-0.2mm.
Further, the end away from described threaded portion of described axostylus axostyle is provided with fixed block, and described first pin-and-hole is arranged on described fixed block; The bottom of described blind hole arranges holddown groove, and described second pin-and-hole is arranged on the cell wall of described holddown groove; Described fixed block matches with described holddown groove, and described nail axle and described axle sleeve are fixed together by described first pin-and-hole and described second pin-and-hole by described steady pin.
Further, the opening of described blind hole and described threaded portion and between the link of described axostylus axostyle, gap is set.
Preferably, the opening of described blind hole and described threaded portion and gap between the link of described axostylus axostyle be 0.0001-0.5mm.
Preferably, described threaded portion becomes inverted frustum, and the screw thread on described threaded portion is taper thread.
Preferably, described axostylus axostyle is cylindrical, and described blind hole is cylindrical shape.
Preferably, described steady pin is cylindrical, and described first pin-and-hole and described second pin-and-hole are circular hole, and the outer surface of the end of described steady pin and described axle sleeve combines together.
Meanwhile, the invention also discloses a kind of dynamically locking bone fracture plate system, comprise blade plate, and the dynamic lock screw coordinated with described blade plate.
Technique scheme of the present invention has the following advantages compared to existing technology:
(1) dynamic lock screw of the present invention, described threaded portion is connected with axostylus axostyle, and the end away from described threaded portion of described axostylus axostyle is provided with the first pin-and-hole; The bottom sidewall of described blind hole is provided with the second pin-and-hole, and described second pin-and-hole matches with described first pin-and-hole; Described nail axle and described axle sleeve are fixed together by described first pin-and-hole and described second pin-and-hole by steady pin.By arranging described first pin-and-hole and described second pin-and-hole, and by described nail axle and described axle sleeve are fixed together through described first pin-and-hole and described second pin-and-hole by described steady pin, whole manufacturing process is simple, convenient, avoid in prior art and nail axle and axle sleeve are fixed by the mode of welding the technical problem being difficult to because the gap between following closely between axle and axle sleeve is too narrow and small make; Simultaneously, gap is left between described axostylus axostyle and described blind hole, after making described dynamic lock screw fix blade plate, in the recovery process of human body, along with the activity of human body, due to the existence in described gap, can fine motion within the specific limits between described blade plate and skeleton, slight stable stimulation can be provided to fracture, more easily promote callus formation, accelerate the healing of fracture.
(2) dynamic lock screw of the present invention, the width in the gap between described axostylus axostyle and described blind hole is 0.01-0.3mm.Further preferably, the width in the gap between described axostylus axostyle and described blind hole is 0.1-0.2mm, in space in above-mentioned scope, the secondary pain that the fine motion of described dynamic lock screw both can not cause patients with fractures to locate, the biological speed of growth that patients with fractures locates can be promoted again, accelerate the healing of fracture further.
(3) dynamic lock screw of the present invention, the end away from described threaded portion of described axostylus axostyle is provided with fixed block, and described first pin-and-hole is arranged on described fixed block; The bottom of described blind hole arranges holddown groove, and described second pin-and-hole is arranged on the cell wall of described holddown groove; Described fixed block matches with described holddown groove, and described nail axle and described axle sleeve are fixed together by described first pin-and-hole and described second pin-and-hole by described steady pin.By arranging described fixed block, and holddown groove is set in the ailhead of the lower end of described blind hole, like this when described fixed block inserts in described holddown groove, and described steady pin through described first pin-and-hole and described second pin-and-hole time, the outer face of described steady pin can in the outside of described ailhead, the external screw thread place of described axle sleeve can not be dropped on, make the externally threaded length of described axle sleeve the longest, namely the length of described axle sleeve is in a disguised form shortened, identical even better fixed effect can be reached by the length of shorter axle sleeve, avoid occurring producing axostylus axostyle phenomenon between described external screw thread and ailhead, thus increase the length of described axle sleeve, and then increase the misery of fracture patient.
(4) dynamic lock screw of the present invention, by set the opening of described blind hole and described threaded portion further and gap between the link of described axostylus axostyle be 0.0001-0.5mm, there is synergism in itself and the gap between described axostylus axostyle and described blind hole, formed and laterally work in coordination with radial fine motion, blood circulation promoting, while not increasing patient pain, and then provides more stable stimulation to fracture further, promote the formation of callus, accelerate the healing of fracture.
(5) dynamic locking bone fracture plate system of the present invention, comprise blade plate, and the dynamic lock screw to coordinate with described blade plate, after the described dynamic lock screw of employing, can fine motion within the specific limits between described blade plate and skeleton, slight stable stimulation can be provided to fracture, more easily promote callus formation, accelerate the healing of fracture.
Accompanying drawing explanation
In order to make content of the present invention be more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the front view following closely axle described in the embodiment of the present invention 1;
Fig. 2 is the sectional view of axle sleeve described in the embodiment of the present invention 1;
Fig. 3 is the sectional view of fixed axis described in the embodiment of the present invention 1;
Fig. 4 is the front view following closely axle described in the embodiment of the present invention 2;
Fig. 5 is the sectional view of axle sleeve described in the embodiment of the present invention 2;
Fig. 6 is the sectional view of fixed axis described in the embodiment of the present invention 2;
Fig. 7 is the schematic diagram of dynamic locking bone fracture plate system described in the embodiment of the present invention 3;
In figure, Reference numeral is expressed as: the dynamic lock screw of 1-; 11-follows closely axle; 111-threaded portion; 112-axostylus axostyle; 113-first pin-and-hole; 114-fixed block; 12-axle sleeve; 121-external screw thread; 122-blind hole; 123-ailhead; 124-second pin-and-hole; 125-holddown groove; 126-otch; 2-steady pin; 3-blade plate.
Detailed description of the invention
Below in conjunction with accompanying drawing, content of the present invention is described in detail.
Embodiment 1
As shown in Figure 1-Figure 3, the present embodiment provides a kind of dynamically lock screw, comprises nail axle 11, axle sleeve 12 and steady pin 2.
Described nail axle 11 comprises threaded portion 111, described threaded portion 111 is in order to be fixed on blade plate by described dynamic lock screw by threaded engagement, described threaded portion 111 can be shape in dynamic lock screw of the prior art and structure, in the present embodiment, the inverted frustum in described 111 one-tenth, threaded portion, and the screw thread on described threaded portion 111 is taper thread; Meanwhile, described threaded portion 11 is connected with axostylus axostyle 112, and the connection set-up mode of described threaded portion 111 and described axostylus axostyle 112 has a lot, as threaded screw fix, welding etc., in the present embodiment, the two one-body molded setting; The end away from described threaded portion 111 of described axostylus axostyle 112 is provided with the first pin-and-hole 113.
Described axle sleeve 12, described axle sleeve 12 comprises axle sleeve main body, the outer entire body of described axle sleeve main body is provided with external screw thread 121, blind hole 122 is provided with in described axle sleeve main body, and be connected with described axle sleeve main body ailhead 123 is set, described ailhead 123 is one-body molded with described axle sleeve main body, the shape of described ailhead 123 is varied, as in the present embodiment, describedly bow 123 for vertebral body shape, and otch 126 is provided with on described ailhead 123, the shape of described otch 126, the selection of structure and number is not unique, in the present embodiment, described otch 126 is symmetrically arranged 3, and be arranged to easily pierce skeleton, preferably, the centrage of described blind hole 122 overlaps with the axis of described axle sleeve main body, the bottom sidewall of described blind hole 122 is provided with the second pin-and-hole 124.
Described first pin-and-hole 113 and described second pin-and-hole 124 match setting, the two to be equipped with form varied, as as described in the second pin-and-hole 124 can be on the bottom sidewall of blind hole 122 as described in one or two are arranged on, in the present embodiment, described second pin-and-hole is on a bottom sidewall being arranged on described blind hole 122; Meanwhile, the shape of the two is also varied, and in the present embodiment, the two is circular hole; It is inner that described nail axle 11 stretches into described blind hole 122, and simultaneously, described nail axle 11 and described axle sleeve 12 are fixed together by described first pin-and-hole 113 and described second pin-and-hole 124 by steady pin 2; It is varied that the shape of described steady pin 2 arranges form, as can according to as described in the first pin-and-hole 113 and as described in the shape of the second pin-and-hole 124 arrange, described steady pin 2 cross section is circular column shape as shown in Figure 3, can not also arrange according to the shape of the first pin-and-hole 113 and the second pin-and-hole 124, as long as but described nail axle 11 and described axle sleeve 12 are fixed, but last, the end portion treatment that described steady pin 2 stretches out described axle sleeve 12 becomes the shape consistent with described axle sleeve 12 surface and structure.
In order to formative dynamics locking bone fracture plate is installed to fracture formative dynamics micromotion structure, gap is left between described axostylus axostyle 112 and described blind hole 122, namely gap is left between the outer peripheral face of described axostylus axostyle 112 and the internal face of described blind hole 122, and the vertical dimension in this gap is 0.01-0.3mm, further, this vertical dimension is 0.1-0.2mm; Preferably, in the present embodiment, described axostylus axostyle 112 is cylindrical, and described blind hole 122 is cylindrical shape simultaneously, the width in the gap at this moment between the outer circumference surface of described axostylus axostyle 112 and the inner peripheral surface of described blind hole is 0.01-0.3mm, further preferably, the width in gap is therebetween 0.1-0.2mm.
It should be noted that, the shape of described axostylus axostyle 112 is varied, except above-mentioned is cylindrically, can also be the cylindrical body of rule, as triangular column, square post etc., then corresponding described blind hole 122 be arranged to triangular column tubular, tetragonal tubular etc.; In addition, in order to weight reduction, the outer surface of described axostylus axostyle 112 can also be arranged to the structures such as ripple, screw thread, trench, projection, salient point, and the inner surface of described blind hole can be arranged to above-mentioned shape equally, as long as described axostylus axostyle 112 can touch the distance size of described blind hole 122 wall in above-mentioned size in fine motion.
In order to make described dynamic locking bone fracture plate system be installed to the effect that fracture reaches fine motion further, the opening of described blind hole 122 and described threaded portion 111 and between the link of described axostylus axostyle 112, gap is set.Preferably, the opening of described blind hole 112 and described threaded portion 111 and gap between the link of described axostylus axostyle 112 be 0.0001-0.5mm.
Embodiment 2
As Figure 4-Figure 6, present embodiments provide a kind of dynamically lock screw, it is the modification in embodiment 1, and this modification is as follows:
The end away from described threaded portion 111 of described axostylus axostyle 112 is provided with fixed block 114, and described first pin-and-hole 113 is arranged on described fixed block 114; The bottom of described blind hole 122 arranges holddown groove 125, and described second pin-and-hole 124 is arranged on the cell wall of described holddown groove 125; The form that arranges of described fixed block 114 and described holddown groove 125 is not one, as long as ensure that stating steady pin 2 is fixed together described nail axle 11 and described axle sleeve 12 by described first pin-and-hole 113 and described second pin-and-hole 124; In the present embodiment, described fixed block 114 is square blocks, and described holddown groove 125 matches with described fixed block 114, and its shape, size are consistent with described fixed block 114, can ensure best fixed effect like this; In addition, in the present embodiment, as shown in Figure 6, described steady pin 2 for cross section be circular bullet.
Embodiment 3
As shown in Figure 7, present embodiments provide a kind of dynamically locking bone fracture plate system, comprise blade plate 3, and dynamic lock screw 1 of the present invention, described blade plate is existing any blade plate that can use dynamic lock screw, be provided with the internal thread hole matched with described threaded portion 111, be suitable for the installation of described dynamic lock screw 1 and be fixed to fracture, its number of described internal thread hole can be determined according to reality, in the present embodiment, its number is 8, and described internal thread hole is inside tapered thread hole.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain of the invention.
Claims (10)
1. a dynamic lock screw, comprises
Nail axle (11), described nail axle (11) comprises threaded portion (111);
Axle sleeve (12), described axle sleeve (12) is provided with external screw thread (121), blind hole (122) and ailhead (123);
It is characterized in that,
Described threaded portion (111) is connected with axostylus axostyle (112), and the end away from described threaded portion (111) of described axostylus axostyle (112) is provided with the first pin-and-hole (113);
The bottom sidewall of described blind hole (122) is provided with the second pin-and-hole (124), described second pin-and-hole (124) is matched with described first pin-and-hole (113);
It is inner that described axostylus axostyle (112) is arranged on described blind hole (122), described nail axle (11) and described axle sleeve (12) are fixed together by described first pin-and-hole (113) and described second pin-and-hole (124) by steady pin (2), and leave gap between described axostylus axostyle (112) and described blind hole (122).
2. dynamic lock screw according to claim 1, is characterized in that, the width in the gap between described axostylus axostyle (112) and described blind hole (122) is 0.01-0.3mm.
3. dynamic lock screw according to claim 2, is characterized in that, the width in the gap between described axostylus axostyle (112) and described blind hole (122) is 0.1-0.2mm.
4. according to the arbitrary described dynamic lock screw of claim 1-3, it is characterized in that, the end away from described threaded portion (111) of described axostylus axostyle (112) is provided with fixed block (114), and described first pin-and-hole (113) is arranged on described fixed block (114); The bottom of described blind hole (122) arranges holddown groove (125), and described second pin-and-hole (124) is arranged on the cell wall of described holddown groove (125); Described fixed block (114) matches with described holddown groove (125), and described nail axle (11) and described axle sleeve (12) are fixed together by described first pin-and-hole (113) and described second pin-and-hole (124) by described steady pin (2).
5. dynamic lock screw according to claim 4, is characterized in that, the opening of described blind hole (122) and described threaded portion (111) and between the link of described axostylus axostyle (112), gap is set.
6. dynamic lock screw according to claim 5, it is characterized in that, the opening of described blind hole (112) and described threaded portion (111) and gap between the link of described axostylus axostyle (112) be 0.0001-0.5mm.
7. dynamic lock screw according to claim 4, is characterized in that, described threaded portion (111) become inverted frustum, and the screw thread on described threaded portion (111) is taper thread.
8. dynamic lock screw according to claim 4, is characterized in that, described axostylus axostyle (112) is for cylindrical, and described blind hole (122) is cylindrical shape.
9. dynamic lock screw according to claim 4, it is characterized in that, described steady pin (2) is for cylindrical, described first pin-and-hole (113) and described second pin-and-hole (124) are circular hole, and the outer surface of the end of described steady pin (2) and described axle sleeve (12) combines together.
10. a dynamic locking bone fracture plate system, comprises blade plate (3), it is characterized in that, also comprises the dynamic lock screw (1) described in claim 1-9 coordinated with described blade plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510800717.9A CN105342685B (en) | 2015-11-19 | 2015-11-19 | A kind of dynamic lock screw and dynamic locking bone fracture plate system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510800717.9A CN105342685B (en) | 2015-11-19 | 2015-11-19 | A kind of dynamic lock screw and dynamic locking bone fracture plate system |
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| Publication Number | Publication Date |
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| CN105342685A true CN105342685A (en) | 2016-02-24 |
| CN105342685B CN105342685B (en) | 2017-12-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109330745A (en) * | 2018-11-27 | 2019-02-15 | 北京爱康宜诚医疗器材有限公司 | Pubis prosthesis assembly |
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| US5569251A (en) * | 1993-07-16 | 1996-10-29 | Bhc Engineering, L.P. | Implant device and method of installing |
| CN102137627A (en) * | 2007-12-17 | 2011-07-27 | 新特斯有限责任公司 | Dynamic bone fixation element and method of using the same |
| CN202458652U (en) * | 2012-02-02 | 2012-10-03 | 常州鼎健医疗器械有限公司 | Dynamic locking screw |
| CN102697551A (en) * | 2012-05-24 | 2012-10-03 | 浙江科惠医疗器械有限公司 | Dynamic locking screw |
| CN103845109A (en) * | 2012-12-05 | 2014-06-11 | 比德尔曼技术有限责任两合公司 | Dynamic bone anchor and method of manufacturing a dynamic bone anchor |
| CN104490463A (en) * | 2014-12-24 | 2015-04-08 | 山东威高骨科材料股份有限公司 | Combined type bone screw |
| CN204337030U (en) * | 2014-12-24 | 2015-05-20 | 山东威高骨科材料股份有限公司 | A kind of Combined bone screw |
| CN205163229U (en) * | 2015-11-19 | 2016-04-20 | 江苏百易得医疗科技有限公司 | Developments locking screw and dynamic locking bone plate system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109330745A (en) * | 2018-11-27 | 2019-02-15 | 北京爱康宜诚医疗器材有限公司 | Pubis prosthesis assembly |
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