CN106420031A - Internal fixing device - Google Patents

Internal fixing device Download PDF

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Publication number
CN106420031A
CN106420031A CN201510473515.8A CN201510473515A CN106420031A CN 106420031 A CN106420031 A CN 106420031A CN 201510473515 A CN201510473515 A CN 201510473515A CN 106420031 A CN106420031 A CN 106420031A
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CN
China
Prior art keywords
fixing device
internal fixing
belt body
groove seat
poly
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Pending
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CN201510473515.8A
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Chinese (zh)
Inventor
戴念国
张雅惠
戴宣元
戴宣仁
戴宣德
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Zi Yuan Sheng Ji Co Ltd
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Zi Yuan Sheng Ji Co Ltd
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Priority to CN201510473515.8A priority Critical patent/CN106420031A/en
Publication of CN106420031A publication Critical patent/CN106420031A/en
Pending legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/82Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin for bone cerclage

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  • 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)
  • Prostheses (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

An internal fixing device comprises a band type body and a groove seat body coupled with the band type body. The band type body is provided with an upper end and a lower end, wherein the lower end is in a hook shape; one side of the band type body is provided with a plurality of first clamping teeth; the groove seat body is coupled with the upper end of the band type body; an included angle of 100 to 170-degree is formed between the groove seat body and the band type body; the groove seat body is provided with a perforation and at least one second clamping tooth; the perforation passes through the groove seat body, so the band type body can pass; and the second clamping tooth is disposed in the perforation to be clamped with the first clamping teeth.

Description

Internal fixing device
Technical field
The invention relates to a kind of fixing device, and it is used for organizing Internal fixation fracture smashing portion more particularly to one kind The internal collar fixture of position.
Background technology
The situation of union of fracture depends on the integrity of fixed form and fracture soft tissue;Therefore select suitable consolidating Determine device, the recovery situation for patient plays crucial role.
At present in orthopaedics therapy it will usually fix fractures using devices such as hone lamella, tinsel or intramedullary pins Position.Surgeon can aspect based on patients with fractures and physiological condition, to select the internal fixing device being suitable for, with Fixing fracture site.For general fracture it will usually using hone lamella collocation nail or only using intramedullary pin It is fixed.However, for comminuted fracture, aforesaid way just cannot fix GUSUIPIAN really;Therefore, can take Join tinsel to be wound around fracture periphery, really to fix GUSUIPIAN.
Above-mentioned internal fixing device is made by metal material (e.g., rustless steel, titanium or other alloys) mostly.By Higher in the biocompatibility of titanium, most hone lamella, nail or intramedullary pin are all to be with titanium or titanium alloy Made by main material, but based on being wound around considering of intensity, the tinsel for treating comminuted fracture would generally be adopted Use stainless steel silk;Now, because titanium is different with the charge number of rustless steel, lead between metal, produce interaction work With and there is electrochemical reaction, serious harmful effect can be produced to the regeneration of patients with fractures's site tissue and healing.
Furthermore, after patient's bony union (bone healing), internal fixing device need to be taken out.In general, In order to reduce wound area as far as possible, can select to take out fixing dress in vivo from the less position of muscular tissue (as joint) Put.If but employ stainless steel silk or other tinsels in therapeutic process, then must from tinsel be wound around position Put the position to determine to operate on taking-up.If the fixing position of tinsel is located at the thicker part of patient muscle tissue, take out When surgical wound generally larger and relatively deep, the risk of complication can be improved.
In addition, when clinically carrying out surgical operation, being limited to configuration and the material behavior of fixing device, it usually needs Using introducer, internal fixing device is directed to fracture, then makes it around impaired bone.However, surgery handss Art limited view, excessive operating theater instruments will have influence on surgical space, the fluency of impact surgical operation.
In view of this, a kind of internal fixing device of improvement is needed in this field badly, can arrange in pairs or groups hone lamella or intramedullary pin use, On the premise of not destroying muscular tissue, can effectively fix fracture site, to improve the deficiency of prior art.
Content of the invention
For solving the above problems, the present invention provides a kind of internal fixing device of improvement, to solve lacking of prior art Fall into.
Internal fixing device provided by the present invention, including a belt body and a groove seat body.Described belt body There is a upper end and a lower end, its lower end is in hook, and the side of this belt body has several first latches.Institute The upper end phase stating groove seat body with belt body couples, and forms the folder of an about 100-170 degree and belt body between Angle.In structure, described groove seat body has a perforation and at least one second latch, and described perforation runs through groove seat originally Body, in order to pass through for belt body;And at least one second latch be located at perforation in, in order to those the first latches Fasten.
According to another embodiment of present invention, the groove seat body of this disclosure and the joint of belt body There is a cambered surface.In one embodiment, the radian of described cambered surface is 0.175rad to 1.4rad.
In another embodiment, the length of described internal fixing groove seat body is 0.3-6.5 centimetre.
According to an embodiment of present invention, the hook lower end of described internal fixing device is one between 2/10 To 9/10 circle.In another embodiment, described hook lower end is justified between for 3/10-5/10 for one.
In another embodiment, described internal fixing device is made by bioabsorbable material.Furthermore, In optional embodiment, described bioabsorbable material is selected from alginic acid (alginate), biphasic calcium phosphate (biphasic calcium phosphate), calcium phosphate (calcium phosphate), calcium sulfate (calcium sulfate), Chitin (chitosan), collagen protein (collagen), gelatin (gelatin), oxyhydrogen-base apatite (hydroxyapatite, HA), gather and stretch alkyl ester (polyalkylene esters), polyanhydride (polyanhydrides), polyesteramide (polyamide Esters), poly- dioxy ketone (polydioxanone, PDS), Polyethylene Glycol (polyethylene glycol, PEG), poly- breast Acid and its copolymer (polylactic acid and its copolymers), Poly(D,L-lactide-co-glycolide (poly (lactic-co-glycolic acid)), poly- hydroxybutane acid-hydroxyl pentane acid copolymer (poly (3-hydroxybutyrate-co-3-hydroxyvalerate), PHBHV), polyvinyl ester (polyvinyl esters), The material group that polyvinyl alcohol (polyvinyl alcohols) and tricalcium phosphate (tricalcium phosphate, TCP) form In.
According to the another embodiment of present invention, the object that described internal fixing device is formed in one.One relatively In good embodiment, the hook lower end of described internal fixing device has an acute angle.
After refering to following description, persond having ordinary knowledge in the technical field of the present invention works as and can will readily appreciate that The essence spirit of the present invention and other goals of the invention, and the technology used in the present invention means and enforcement aspect.
Brief description
It is that the above-mentioned of the present invention can be become apparent with other purposes, feature, advantage and embodiment, appended accompanying drawing Be described as follows:
Fig. 1 is the structure sectional view according to the internal fixing device 100 shown in an embodiment of the present invention;
Fig. 2 is the schematic appearance according to the internal fixing device 100 shown in another embodiment of the present invention;
What Fig. 3 A and Fig. 3 B illustrated the internal fixing device 100 shown in Fig. 1 wears structural representation;
Fig. 4 is to wear structural representation according to the internal fixing device 200 shown in another embodiment of the present invention Figure;
Fig. 5 is the structure sectional view according to the internal fixing device 300 shown in a further embodiment of this invention; And
Fig. 6 is the structure sectional view according to the internal fixing device 400 shown in an embodiment of the present invention.
According to usual operating type, in figure various features and component are not drawn to scale, its drafting mode be for Assume specific features related to the present invention and component in optimal manner.Additionally, between different accompanying drawings, with phase With or similar component symbol censuring similar component/part.
【Symbol description】
100th, fixing device in 200,300,400 bodies
110th, 210,310,410 belt body
150th, 250,350,450 groove seat body
110U, 410U belt body upper end
110L, 210L, belt body lower end
310L、410L
122nd, 222,322,422 first latch
152nd, 252,452 perforation
154th, 354,454 second latch
D distance
A angle
Specific embodiment
In order that the narration of present invention is more detailed and complete, the enforcement aspect below for the present invention and tool Body embodiment proposes illustrative description;But this is not implemented or the unique shape with the specific embodiment of the invention Formula.The feature of multiple specific embodiments is covered and in order to construction and these specific embodiments of operation in embodiment Method and step with its order.However, also can be reached using other specific embodiments identical or impartial function with Sequence of steps.
Although the numerical range in order to define wider range of the present invention is all rough numerical value with parameter, to the greatest extent may be used herein The correlation values in specific embodiment can accurately be assumed.However, any numerical value substantially inevitably contain because Standard deviation caused by indivedual method of testings.Herein, " about " typically refer to actual numerical value in a special value or Within positive and negative 10%, 5%, 1% or 0.5% of scope.Or, " about " one word represents actual numerical value and falls flat Within the acceptable standard error of average, depending on considering of persond having ordinary knowledge in the technical field of the present invention Fixed.In addition to experimental example, or unless explicitly stated, when being appreciated that all scopes used herein, number Amount, numerical value and percentage ratio are all through the modification of " about ".Therefore, unless otherwise contrary explanation, this specification with Numerical parameter disclosed in appended claims is all rough numerical value, and visual demand and change.At least should be by These numerical parameters be interpreted as pointed number of significant digit with apply mechanically general transfer method obtained by numerical value.Herein, Numerical range is expressed as by end point to another end points or between two end points;Unless otherwise stated, this place The numerical range stated all includes end points.
The word such as " individual " (subject) or " patient ", " sufferer " (patient) refers to can be using in body of the present invention The animal of fixing device, including the mankind.Unless specifically stated otherwise, " individual " or " patient ", " sufferer " cover hero Property and jenny.
Unless this specification is defined otherwise, the implication of science and technology vocabulary used herein and the affiliated technology of the present invention In field, tool usually intellectual is understood and usual same meaning.Additionally, the situation in discord context conflict Under, the singular noun used by this specification covers several types of this noun;And also cover this during several noun used The odd number type of noun.
During surgery fracture fixing operation, quickly accurate and really fixing fracture site, is sufferer future bone Head whether can healing completely key.Therefore, the present invention proposes a kind of novel internal collar fixture, allows and makes User (e.g., doctor) can be not required to the guiding of introducer, can complete surgery fracture fixing operation.
Fig. 1 is the structure sectional view according to the internal fixing device 100 shown in an embodiment of the present invention.Fig. 2 The schematic appearance of the internal fixing device 100 shown in Fig. 1.Please referring also to Fig. 1 and Fig. 2, body of the present invention Inner fixing device 100 has the structure of a similar band and tail end is in hook, allows surgeon not need introducer And under the assistance of screw, the fracture site of the quick immobilized patients of energy, therefore can lift the efficiency of surgical operation.
In structure, in body of the present invention fixing device 100 main by belt body 110 and 150 groups of groove seat body Become.Described belt body 110 has an a upper end 110U and lower end 110L, and its lower end 110L is in hook, and The side of belt body 110 has several first latches 122.The hook lower end 110L of described belt body 110 There is suitable hardness and elasticity.In a unrestriced embodiment, described hook lower end 110L has an acute angle, And the characteristic based on the hook lower end 110L suitable hardness of tool, may be used to wear the gap between individual muscle and skeleton, Along while skeleton outer surface winding, push muscular tissue aside.Furthermore, hook lower end 110L tool quite elasticity Characteristic, makes hook lower end 110L recessed can roll over the perforation (as shown in Figure 3A) passing through groove seat body 150.More than being based on Feature, body inner fixing device 100 is under the assistance being not required to other surgical operating instruments, you can completely fixing fracture Position.
Described groove seat body 150 is coupled with the upper end 110U phase of belt body 110, and with belt body 110 it Between formed an about 100-170 degree included angle A.For example, about 100,101,102,103,104,105,106, 107、108、109、110、111、112、113、114、115、116、117、118、119、120、121、 122、123、124、125、126、127、128、129、130、131、132、133、134、135、136、 137、138、139、140、141、142、143、144、145、146、147、148、149、150、151、 152、153、154、155、156、157、158、159、160、161、162、163、164、165、166、 167th, 168,169 or 170 degree;Preferably 110-160 degree.Described belt body 110 and groove seat body 150 Between angle design so that the internal collar fixture 100 of the present invention can be closer to bone surface, it is to avoid when When in body of the present invention, the belt body 110 of fixing device 100 wears to groove seat body 150 formation circulus, should The junction stress concentrations of belt body 110 and groove seat body 150, and rupture.Therefore, this The belt body 110 of phaneroplasm inner fixing device 100 and the design of groove seat body 150 joint included angle A, can divide Dissipate the stress at this position.
Described groove seat body 150 in structure, runs through groove seat body 150 including a perforation 152, in order to supply banding Body 110 passes through;With several second latches 154 located at 152 inner surfacies of boring a hole, in order to those the first latches 122 fasten.
In optional embodiment, about 0.2-1 centimetre of the thickness of described belt body 110, e.g., from about 0.2, 0.3rd, 0.4,0.5,0.6,0.7,0.8,0.9 or 1 centimetre;Preferably about 0.2-0.5 centimetre, e.g., from about 0.2, 0.3rd, 0.4 or 0.5 centimetre.Furthermore, the width of described belt body 110 is 0.2-5 centimetre, e.g., from about 0.5, 0.6、0.7、0.8、0.9、1、1.1、1.2、1.3、1.4、1.5、1.6、1.7、1.8、1.9、2、2.1、2.2、 2.3、2.4、2.5、2.6、2.7、2.8、2.9、3、3.1、3.2、3.3、3.4、3.5、3.6、3.7、3.8、 3.9th, 4,4.1,4.2,4.3,4.4,4.5,4.6,4.7,4.8,4.9 or 5 centimetres;In another embodiment In, the width of described belt body is 0.5-3 centimetre, e.g., from about 0.5,0.6,0.7,0.8,0.9,1,1.1, 1.2、1.3、1.4、1.5、1.6、1.7、1.8、1.9、2、2.1、2.2、2.3、2.4、2.5、2.6、2.7、 2.8th, 2.9 or 3 centimetres.Furthermore, the length of described belt body 110 is about 3-15 centimetre, e.g., from about 3,3.1, 3.2、3.3、3.4、3.5、3.6、3.7、3.8、3.9、4、4.1、4.2、4.3、4.4、4.5、4.6、4.7、 4.8th, 4.9,5,6,7,8,9,10,11,12,13,14 or 15 centimetres.
Additionally, the tip of the hook lower end 110L of described belt body 110, non-bending place is separated by with belt body One apart from D, described distance be 0.5-7 centimetre, e.g., from about 0.5,0.6,0.7,0.8,0.9,1,1.1,1.2, 1.3、1.4、1.5、1.6、1.7、1.8、1.9、2、2.1、2.2、2.3、2.4、2.5、2.6、2.7、2.8、 2.9、3、3.1、3.2、3.3、3.4、3.5、3.6、3.7、3.8、3.9、4、4.1、4.2、4.3、4.4、4.5、 4.6、4.7、4.8、4.9、5、5.1、5.2、5.3、5.4、5.5、5.6、5.7、5.8、5.9、6、6.1、6.2、 6.3rd, 6.4,6.5,6.6,6.7,6.8,6.9,7 centimetres.In optional embodiment, under described hook Hold for one between 2/10 to 9/10 circle;For example, 2/10,3/10,4/10,5/10,6/10,7/10,8/10 Or 9/10 circle.Preferably 3/10-5/10 circle.
Described technical field tool usually intellectual can come according to the difference of the bone size at patients with fractures and configuration Select fixing device in the body of the present invention of suitable specification.Specifically, individual upper limb, lower limb, palm or sole Skeletal shape simultaneously differs, for example, when femur or fracture of radius, because the diameter of bone is different with length, and institute The stress needing also differs.Therefore, in body of the present invention fixing device size, can according to applicable bone size not Change together.
In addition, those of ordinary skill in the art should be understood that described first latch 122 and the second latch 154 is the snap-in structure of corresponding setting, and therefore, the first latch 122 is not limited to located at belt body 110 Left side or right lateral surface, as long as the second latch 154 located at perforation 152 inner surface of groove seat body 150 can be with the One latch 122 position is corresponding to be engaged.Additionally, the direction of its bending of the hook lower end 110L of the present invention is also It is not limited to direction shown in Fig. 1, correlative technology field personage can change hook according to actually used situation and usual experience The bending direction of shape lower end 110L.
Perforation 152 in a specific embodiment, on the groove seat body 150 of fixing device 100 in body of the present invention Size need to be passed through enough to the hook lower end 110L for belt body 110, and several second latches in perforation 154 have elasticity in itself, make the first latch 122 of belt body 110 can pass through to bore a hole 152 simultaneously with single direction Fasten with the second latch 154.
In a unrestriced embodiment, about 0.3-6.5 centimetre of the length of groove seat body 150.For example, about 0.3, 0.4、0.5、0.6、0.7、0.8、0.9、1、1.1、1.2、1.3、1.4、1.5、1.6、1.7、1.8、1.9、2、 2.1、2.2、2.3、2.4、2.5、2.6、2.7、2.8、2.9、3、3.1、3.2、3.3、3.4、3.5、3.6、 3.7、3.8、3.9、4、4.1、4.2、4.3、4.4、4.5、4.6、4.7、4.8、4.9、5、5.1、5.2、5.3、 5.4th, 5.5,5.6,5.7,5.8,5.9,6,6.1,6.2,6.3,6.4 or 6.5 centimetres.
Fig. 3 A and Fig. 3 B illustrates the operation chart of the internal fixing device 100 shown in Fig. 1.
In actual use, surgeon is first by the belt body 110 of fixing device 100 in body of the present invention Be placed in individual fracture (in figure does not illustrate), followed by hook lower end 110L separately excessively individual fracture with The muscular tissue of side;Then, adjusting fixing device 100 in body of the present invention makes the hook lower end of its belt body 110 110L exposes, then the hook lower end 110L clamping belt body with general operating theater instruments (for example, clamper) is simultaneously Pull it back, subsequently pass through the perforation 152 of groove seat body 150, after adjusting suitable circulus size, tension Belt body 110, and make fractures so that the second latch 122 is engaged with the first latch 154 of groove seat body 150 Position is fixing by fixing device 100 in body of the present invention.In body of the present invention fixing device 100 around fixing fracture when, Bone surface can be obedient to, it is to avoid space produces and causes stress distribution inequality (Fig. 3 B) as far as possible.
It is noted that in this embodiment, belt body 110 is only capable of with single direction (that is, shown in arrow Direction) pass through groove seat body 150.In other words, belt body 110 cannot be with opposite direction (that is, in contrast to arrow Direction) mobile, leave groove seat body 150, therefore, in body of the present invention, fixing device 100 can be really around tying up Determine fracture, will not get loose landing.Additionally, in a non-essential embodiment, when dress fixing in body of the present invention Put 100 be fixed in fracture site after, actually used situation can be fitted, wipe out the hook of belt body 110 with shears Lower end 100L.
Fig. 4 is the operation chart according to the internal fixing device 200 shown in another embodiment of the present invention.This reality Apply the construction of internal fixing device 200 of mode and component configuration mode is generally filled with fixing in vivo shown in Fig. 1 Put 100 identical, therefore, separately do not repeat.Unlike unique, internal fixing device 200 foundation of present embodiment The configuration of its belt body 210 length and the first latch 222 so that when belt body 210 wear through groove seat this After body 250, the hook lower end 210L of belt body 210 can directly be sticked in the perforation 252 of groove seat body 250 And groove seat body wall between.This structure provides between belt body 210 and groove seat body 250 two and is fixed Portion, i.e. the place that the first latch 222 and hook lower end 210 are combined with groove seat body 250, strengthens belt body 210 with the bond strength of groove seat body 250.
Fig. 5 is the structure sectional view according to the internal fixing device 300 shown in a further embodiment of this invention.This The construction of phaneroplasm inner fixing device 300 and component configuration generally with internal fixing device 100 phase shown in Fig. 1 With, except for the difference that the first latch 322 of the internal fixing device 300 of present embodiment and the second latch 354, with And the configuration direction of the hook lower end 310L of belt body 310 is different.As can be seen here, on belt body 310 First latch 322 and second latch 354 relative set in structure of groove seat body 350, in order to be mutually clamped, Wherein first latch 322 is not limited to be arranged on left side or the right side of belt body 300.Furthermore, belt body 310 hook lower end 310L also can change with the usual experience of correlative technology field personage and actually used situation. Furthermore it should be noted that in unrestriced embodiment, groove seat body 350 bending has a radian, it is to use To fit with fracture, so that groove seat body 350 is kept out when bone surface and be provided that preferably support force.
Fig. 6 is according to the internal collar fixture 400 shown in another embodiment of the present invention.Present embodiment institute Each component major part included by the internal collar fixture 400 showing and the internal collar fixture shown in Fig. 1 100 is identical, therefore identical component here does not separately repeat.
As illustrated, groove seat body 450 of the present invention has cambered surface S with the joint of belt body 410.Described The radian of cambered surface is 0.175rad to 1.4rad.Described radian (radian) is unit, intercepts and half on circumference The isometric arc in footpath (radius), its corresponding central angle is referred to as 1 radian.Represented with following equation:
In this embodiment, in body of the present invention, fixing device 400 strengthens groove seat body 450 and belt body The structure of 410 joints, enables joint closer to skeleton, reduces the turning stress of joint, to strengthen this The intensity of phaneroplasm inner fixing device 400.Additionally, the internal fixing device shown in any embodiment of the present invention is permissible Made by bioabsorbable material.Furthermore, in optional embodiment, described bioabsorbable material choosing Free alginic acid, biphasic calcium phosphate, calcium phosphate, calcium sulfate, chitin, collagen protein, gelatin, hydroxy phosphorus Lime stone, the poly- alkyl ester, polyanhydride, polyesteramide, poly- dioxy ketone, Polyethylene Glycol, polylactide and its copolymer, poly- of stretching Poly lactic coglycolic acid, poly- hydroxybutane acid-hydroxyl pentane acid copolymer, polyvinyl ester, polyvinyl alcohol and In the material group of tricalcium phosphate composition.
Internal fixing device made by bioabsorbable material for the present invention, arrange in pairs or groups known metal hone lamella, bone When nail or intramedullary pin use, the internal fixing device with metal material can be avoided to produce metal reciprocal action, impact The healing of fracture site tissue;Additionally, the internal fixing device of the present invention can indwelling for a long time in organization internal, warp By excreting after absorption of human body metabolism it is not necessary to take out via surgical operation again, invasive surgical can be reduced to patient Caused misery.
Although disclosing the specific embodiment of the present invention above in embodiment, so it is not limited to the present invention, Persond having ordinary knowledge in the technical field of the present invention, in the case of not departing from the principle of the present invention with spirit, When it can be carried out with various changes and modification, therefore protection scope of the present invention is when with appending claims institute circle Fixed is defined.

Claims (10)

1. a kind of internal fixing device, including
One belt body, has a upper end and a lower end, and its lower end is in hook, and the side of this belt body has Several first latches;
One groove seat body, is coupled with the upper end phase of this belt body, and forms one and this belt body between about The angle of 100-170 degree, and have:
One perforation, runs through this groove seat body, with passing through for this belt body;And
At least one second latch, in this perforation, in order to fasten with those first latches.
2. as claimed in claim 1 internal fixing device it is characterised in that this groove seat body and belt body Joint there is a cambered surface.
3. as claimed in claim 2 internal fixing device it is characterised in that the radian of this cambered surface is about 0.175 Rad to 1.4rad.
4. as claimed in claim 1 internal fixing device it is characterised in that the length of this groove seat body is 0.3-6.5 centimetre.
5. as claimed in claim 1 internal fixing device it is characterised in that this hook lower end for one between 2/10 to 9/10 circle.
6. as claimed in claim 5 internal fixing device it is characterised in that this hook lower end for one between For 3/10-5/10 circle.
7. as claimed in claim 1 internal fixing device it is characterised in that it is by bioabsorbable material Made.
8. as claimed in claim 6 internal fixing device it is characterised in that this bioabsorbable material is selected from By alginic acid (alginate), biphasic calcium phosphate (biphasic calcium phosphate), calcium phosphate (calcium Phosphate), calcium sulfate (calcium sulfate), chitin (chitosan), collagen protein (collagen), gelatin (gelatin), oxyhydrogen-base apatite (hydroxyapatite, HA), poly- stretch alkyl ester (polyalkylene esters), polyanhydride (polyanhydrides), polyesteramide (polyamide esters), poly- dioxy ketone (polydioxanone, PDS), poly- Ethylene glycol (polyethylene glycol, PEG), polylactide and its copolymer (polylactic acid and its Copolymers), Poly(D,L-lactide-co-glycolide (poly (lactic-co-glycolic acid)), poly- hydroxybutane acid- Hydroxyl pentane acid copolymer (poly (3-hydroxybutyrate-co-3-hydroxyvalerate), PHBHV), polyethylene Ester (polyvinyl esters), polyvinyl alcohol (polyvinyl alcohols) and tricalcium phosphate (tricalcium phosphate, TCP in the material group) forming.
9. as claimed in claim 1 internal fixing device it is characterised in that this internal fixing device is integrated The object of molding.
10. as claimed in claim 1 internal fixing device it is characterised in that this hook lower end has an acute angle.
CN201510473515.8A 2015-08-05 2015-08-05 Internal fixing device Pending CN106420031A (en)

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CN204379360U (en) * 2015-01-12 2015-06-10 华永飞 A kind of blood flow controlling apparatus of performing the operation
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Application publication date: 20170222