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2015HainingZ

  

Invention (Patent): Haining Z. Artificial total hip joint prosthesis with axially restrained anti-dislocation structure. CN105105873A (2015). Machine translation from Chinese.

 

CN105105873A China
Inventor: Zhang Haining
Current Assignee: Shanghai longhui Medical Technology Co., Ltd.
Worldwide applications 2015 CN
Application CN201510360141.9A events:
2015-08-07 Application filed by Affiliated Hospital of University of Qingdao
2015-08-07 Priority to CN201510360141.9A
2015-12-02 Publication of CN105105873A
2017-06-20 Application granted
2017-06-20 Publication of CN105105873B
Status: Active
2035-08-07 Anticipated expiration

 

Artificial total hip joint prosthesis with axially restrained anti-dislocation structure

Zhang Haining

 

Abstract

The invention provides a kind of artificial full-hip joint prosthese with axially limitation anticreep bit architecture, including acetabular component, liner, femoral head prosthesis, liner is located in the groove of acetabular component, and femoral head prosthesis head is located in the groove of liner, also including axially limitation anticreep bit architecture, be connected as a single entity for above-mentioned three and its length and elasticity is can adjust through the central part of acetabular component, liner and femoral head prosthesis head by the anticreep bit architecture.Use this artificial full-hip joint prosthese with axially limitation anticreep bit architecture; axial traction action limitation femoral head prosthesis are obtained to deviate from from acetabular component; reach the complication for decreasing or even eliminating the dislocation of hip joint occurred after artificial total hip arthroplasty; and the mobility of postoperative hip joint can be increased; limitation requirement to the daily routines of postoperative patient is reduced, and structure design is simple, simple operation; dismounting is easy, is also beneficial to the taking-up of artificial full-hip joint prosthetic loosening prosthese when overhauling.

Description

Artificial full-hip joint prosthese with axially limitation anticreep bit architecture

Technical field

The invention belongs to medical apparatus technical field, specifically, axially the anti-dislocation of limitation is adjustable to be related to a kind of band The artificial full-hip joint prosthese of structure.

Background technology

Artificial total hip arthroplasty is to treat one of maximally efficient means of hip joint disease in the world at present, its treatment Effect obtains the consistent accreditation of doctor and patient in worldwide.But the major complications of Post operation impact effect are to close Section dislocation and range of motion reduction, reduce satisfaction to a certain extent, extend recovery period, and increased operation Risk, while also accordingly increasing to reduce requirement of the complication to surgical technic.At present for the improvement on apparatus to subtract The measure of dislocation risk less only carries out flash design to polyethylene liner, but influence to displacement rate is limited, dislocation it is concurrent Disease still has 3% or so, and the patient for there is dislocation to be inclined to, and the especially needed one kind of patient once dislocated can The artificial full-hip joint prosthese for limiting dislocation occurs.

The content of the invention

It is false the invention provides a kind of artificial full-hip joint with axially limitation anticreep bit architecture to solve problem above Body, reaches reduction or prevents the complication of postoperative artificial full-hip joint prothesis dislocation, and then it is postoperative restricted to reach reduction patient Action, the purpose for accelerating the course of convalescence.

In order to solve the above technical problems, the present invention is achieved using following technical scheme：

A kind of artificial full-hip joint prosthese with axially limitation anticreep bit architecture, including acetabular component, liner, femoral head are false Body, femoral head prosthesis include femoral head prosthesis head and neck, and the central part of wherein head has bellmouth, the end of neck Stretch into and taper fit is realized in the bellmouth, the liner is located in the groove of acetabular component, femoral head prosthesis head is located at interior In the groove of lining, also including axially limitation anticreep bit architecture, the anticreep bit architecture is false through acetabular component, liner and femoral head The central part of body head, above-mentioned three is connected as a single entity and elasticity is adjustable, effectively prevents femoral head prosthesis from deviating from from liner.

Further, the axially limitation anticreep bit architecture includes two button plates and artificial ligament structure, each button Two through holes are opened up on plate, the central part of the acetabular component opens up first through hole, and the central part of liner opens up second and leads to Hole, the central part of femoral head prosthesis head opens up third through-hole, and the first to the third through-hole and bellmouth are corresponding, One of button plate is located in first through hole, and another button plate is located in the bellmouth on the outside of third through-hole, described artificial tough Band structure sequentially passes through two through holes of button plate respectively, and two button plates are connected as a single entity, so as to by acetabular component, interior be lined with And femoral head prosthesis are connected as a single entity.

Further, the first through hole is shoulder hole, and Outboard Sections are more than inboard portion, and the button plate is located at outside Part is interior and is stuck at the step of shoulder hole.

Further, described second, third through hole is identical with the inboard portion size of first through hole, respectively less than first through hole Outboard Sections, while again smaller than the size of bellmouth, so two button plates are just stuck in the Outboard Sections of first through hole And in bellmouth.Here, the size of second, third through hole is less than the size of the smallest end of bellmouth.

Further, the edge rounding off of first, second, third through hole.The edge in hole is smooth zone radian Avoid to causing cutting by the artificial ligament structure in it.

Further, the cross section of first, second, third through hole is circular, square or polygon.

Further, the outward flange of the button plate in first through hole is concordant with the outward flange of acetabular component or less than hip The outward flange of mortar prosthese.

Further, the liner is using polyethylene, ceramics or metal material.

Further, the button plate is metal button plate.

Further, the artificial ligament structure uses polyester fiber or other materials, with elasticity, can adjust it nervous Degree.

Artificial full-hip joint prosthese of the invention is made by designing axially limitation anticreep bit architecture using axially drawing limitation With reaching the purpose that prevents femoral head prosthesis from being dislocated from acetabular component, due to this axially limitation anticreep bit architecture there is elasticity, Its length and tension force can be adjusted, adjustable anticreep bit architecture is formed.

Compared with prior art, advantages and positive effects of the present invention are：

Using this artificial full-hip joint prosthese with axially limitation anticreep bit architecture, due to obtaining axial traction action limit The effect that femoral head prosthesis processed are deviate from from acetabular component, the round ligament of femur of the similar Normal Hip of its effect, so that can The complication of the dislocation of hip joint occurred after artificial total hip arthroplasty is decreased or even eliminated to reach, the edge in hole is smooth Avoided to causing cutting by the structure in it with radian.Simultaneously as this axially limits anticreep bit architecture has certain length Degree and elasticity, therefore prothesis dislocation risk caused by the shock to the neck of femur part and acetabular component edge of prosthese is reduced, So the mobility of postoperative hip joint can be increased, the limitation requirement to the daily routines of postoperative patient is reduced.Also, this is axially limited Anticreep bit architecture design processed is simple, and simple operation, dismounting is easy, is also beneficial to the vacation when overhauling of artificial full-hip joint prosthetic loosening The taking-up of body.

Brief description of the drawings

Fig. 1 is the longitudinal cross section of artificial full-hip joint prosthese specific embodiment of the present invention；

Fig. 2 is the structural representation of button plate.

Specific embodiment

The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.

In the description of the invention, it is to be understood that the orientation of the instruction such as term " center ", " longitudinal direction ", " interior ", " outward " Or position relationship is, based on orientation shown in the drawings or position relationship, to be for only for ease of the description present invention and simplify description, and Be not indicate or imply meaning device or element must have specific orientation, with specific azimuth configuration and operation, therefore It is not considered as limiting the invention.Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that referring to Show or imply relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " second " are defined Feature can express or implicitly include one or more this feature.In the description of the invention, unless otherwise saying Bright, " multiple " is meant that two or more.

Although existing artificial total hip arthroplasty is obtained in that good clinical effectiveness such as pain of alleviation etc., postoperative de- The complication of position, and femoral head prosthesis neck and acetabular component shock, mobility reduction etc. affects postoperative effect, especially Its for exist the dislocation of hip joint tendency, or once occurred the dislocation of hip joint patient it is even more so.Conventional method is such as in poly- second The mode effect such as lining increase flash is substantially limited in alkene.Therefore, the present invention proposes that one kind can reduce or even prevent wind of dislocating The artificial full-hip joint prosthese of danger.

Embodiment 1

With reference to shown in Fig. 1, the embodiment is a kind of artificial full-hip joint prosthese with axially limitation anticreep bit architecture, including Acetabular component 1, liner 2, femoral head prosthesis 3, femoral head prosthesis 3 include femoral head prosthesis head 31 and neck 32, wherein head 31 central part has bellmouth 311, and the end of neck 32 is stretched into the bellmouth 311 and realizes taper fit, and liner 2 is located at In the groove of acetabular component 1, femoral head prosthesis head 31 is located in the groove of liner 2, in acetabular component 1, liner 2 and femur The central part of head prosthesis head 31 has also extended through axially limitation anticreep bit architecture, and above-mentioned three is linked as one by the anticreep bit architecture Body and elasticity it is adjustable, effectively prevent femoral head prosthesis 3 from deviating from from liner 2.Wherein, liner uses polythene material.

Specifically,

Axially limitation anticreep bit architecture includes metal button plate 4, metal button plate 5 and artificial ligament structure 6, each button Open up two through holes on plate, the structure of metal button plate 4 as shown in Figure 2 opens up two through holes 41, while in acetabular bone thereon The central part of prosthese 1 opens up first through hole 11, and the central part of liner 2 opens up the second through hole 21, femoral head prosthesis head 32 Central part open up third through-hole 312, the first to third through-hole and bellmouth are just corresponded to, first, second, third through hole Cross section for circle.

Wherein, first through hole 11 is shoulder hole, including larger Outboard Sections 111 and less inboard portion 112, metal Button plate 4 is located in Outboard Sections 111 and is stuck at the step of shoulder hole, and the outward flange 4 of button plate 4 is less than acetabular component 1 outward flange, prevents interference.

Second through hole 21, third through-hole 312 are identical with the size of inboard portion 112 of first through hole, respectively less than first through hole Outboard Sections 111, while the size of the smallest end again smaller than bellmouth 311.Metal button plate 5 is stuck in outside third through-hole 312 The bottom of the bellmouth 311 of side；

As seen from Figure 1, two button plates are just stuck in the Outboard Sections 111 of first through hole 11 and in bellmouth 311, Artificial ligament structure 6 sequentially passes through two through holes of button plate respectively, and two button plates are connected as a single entity, so as to by acetabular component 1st, liner 2 and femoral head prosthesis 3 are connected as a single entity.Artificial ligament structure 6 uses Polyester Fibers, can adjust its length and opens Power, forms adjustable anticreep bit architecture, the size of limitation dislocation strength as needed, can adjust its tensioning degree, utilizes The axial direction drawing restriction effect of artificial ligament structure reaches the purpose for preventing femoral head prosthesis from being dislocated from acetabular component.Using The good biocompatibility of Polyester Fibers manufacturing artificial ligament structure, is not easy to be ostracised in human body, and wear-resistant.

In order to prevent through hole from cutting is caused to artificial ligament structure 6, the edge of first, second, third through hole is band Radian, rounding off.

Accommodated axially by being opened up in the acetabular component in existing artificial full-hip joint prosthese, liner and femoral head prosthesis The hole of anticreep bit architecture is limited, axially limitation anticreep bit architecture is fitted into, obtain axial traction action, prevent femoral head Prosthese is deviate from from acetabular component, and the edge for accommodating the axially hole of limitation anticreep bit architecture is band radian smooth structure, will not be right Artificial ligament causes cutting.

Specific surgical operation step：

In operation after being prepared to acetabular component bottom and finishing, will axial limitation anticreep bit architecture acetabular bone side metal After button plate connection artificial ligament structure, it is placed in the first through hole in the middle part of metal acetabulum prosthese, then by common artificial complete Hip joint replacement technique squeezes into metal acetabulum prosthese.Again by artificial ligament structure through the second through hole in the middle part of polyethylene liner It is interior, polyethylene liner is squeezed into metal acetabulum prosthese.Then by artificial ligament structure through femoral head prosthesis head center In third through-hole, femur rostral Metal buttonses plate is then passed through, femoral head prosthesis head is placed in polyethylene liner, by femur Rostral metallic button buckle is shifted onto in femoral head prosthesis head and carries out the bellmouth inner bottom part that taper is matched with femoral head and neck.According to The size of the limitation dislocation strength of needs, adjusts the appropriate length and tension force of artificial ligament structure, by artificial ligament structure in stock Knotted between the holes of bone side metallic button buckle and fixed.Then femoral head prosthesis neck is reset in femoral head prosthesis head, Complete the placement of total hip prosthesis.

Certainly, the cross section of first, second, third through hole in above-described embodiment can also be square or polygon, root Factually border processing technology determines shape, and inner lining material therein can also be using ceramics or metal.

The above, is only presently preferred embodiments of the present invention, is not the limitation for making other forms to the present invention, is appointed What those skilled in the art changed possibly also with the technology contents of the disclosure above or be modified as equivalent variations etc. Effect embodiment.But it is every without departing from technical solution of the present invention content, according to technical spirit of the invention to above example institute Any simple modification, equivalent variations and the remodeling made, still fall within the protection domain of technical solution of the present invention.

Claims:

1. a kind of artificial full-hip joint prosthese with axially limitation anticreep bit architecture, including acetabular component, liner, femoral head is false Body, femoral head prosthesis include femoral head prosthesis head and neck, and the central part of wherein head has bellmouth, the end of neck Stretch into and taper fit is realized in the bellmouth, the liner is located in the groove of acetabular component, femoral head prosthesis head is located at interior In the groove of lining, it is characterised in that：Also include axially limitation anticreep bit architecture, the anticreep bit architecture is through the center of acetabular component The central part at position, the central part of liner and femoral head prosthesis head, by the acetabular component, liner and femoral head Prosthese head is connected as a single entity and elasticity is adjustable；

The axially limitation anticreep bit architecture includes two button plates and artificial ligament structure, two is opened up on each button plate and is led to Hole, the central part of the acetabular component opens up first through hole, and the central part of liner opens up the second through hole, femoral head prosthesis head The central part in portion opens up third through-hole, and first, second, and third through hole and bellmouth are corresponding, one of knob Buckle is located in first through hole, and another button plate is located in the bellmouth on the outside of third through-hole, the artificial ligament structure difference Two through holes of button plate are sequentially passed through, two button plates are connected as a single entity；

The first through hole is shoulder hole, and Outboard Sections are more than inboard portion, and the button plate is located in Outboard Sections and is stuck in At the step of shoulder hole；

The inboard portion of the first through hole, the second through hole and third through-hole size are identical, respectively less than the outside of first through hole Part, while again smaller than the size of bellmouth.

2. artificial full-hip joint prosthese according to claim 1, it is characterised in that：First, second, and third through hole Edge rounding off.

3. artificial full-hip joint prosthese according to claim 1, it is characterised in that：First, second, and third through hole Cross section is circular or polygon.

4. artificial full-hip joint prosthese according to claim 1, it is characterised in that：Button plate in first through hole it is outer Edge is concordant with the outward flange of acetabular component or outward flange less than acetabular component.

5. artificial full-hip joint prosthese according to claim 1, it is characterised in that：The liner using polyethylene, ceramics or Metal material.

6. artificial full-hip joint prosthese according to claim 1, it is characterised in that：The button plate is metal button plate.

7. artificial full-hip joint prosthese according to claim 1, it is characterised in that：The artificial ligament structure has elasticity.

 


 

External links

Haining Z. Artificial total hip joint prosthesis with axially restrained anti-dislocation structure. CN105105873A  August 7, 2015. 2015. patents.google 


Publications of invention

CN105105873 (А)
CN105105873 (B)
2015HainingZ

  

Authors & Affiliations

张海宁 (Zhang Haining) – China.

 

Keywords

ligamentum capitis femoris, ligamentum teres, ligament of head of femur, endoprosthesis, prosthesis, invention, bipolar, total

 

                                                                    

NB! Fair practice / use: copied for the purposes of criticism, review, comment, research and private study in accordance with Copyright Laws of the US: 17 U.S.C. §107; Copyright Law of the EU: Dir. 2001/29/EC, art.5/3a,d; Copyright Law of the RU: ГК РФ ст.1274/1.1-2,7


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