CN208710177U - Type femoral bone end prosthesis component - Google Patents

Abstract

The utility model provides a kind of type femoral bone end prosthesis component, comprising: interlayer prosthese, for being assembled in pulp cavity, interlayer prosthese includes: cylindrical base body and first connecting portion, cylindrical base body has inner cavity, intracavitary including first connecting portion setting, and synosteosis layer is formed on the outer surface of cylindrical base body；Type femoral bone end prosthesis is worn in the lumen, and second connecting portion is provided on type femoral bone end prosthesis, and interlayer prosthese and type femoral bone end prosthesis are removably joined together by the cooperation of first connecting portion and second connecting portion.The technical solution of the utility model effectively solves destroy original bone amount in secondary revision procedure in the prior art.

Description

Type femoral bone end prosthesis component

Technical field

The utility model relates to medical instruments fields, in particular to a kind of type femoral bone end prosthesis component.

Background technique

Type femoral bone end prosthesis is to apply to one of current orthopaedics hip replacement implantation material, is suitable for human hip The reparation and reconstruction of disease, it will usually with femoral head prosthesis implantation after with acetabular bone side prosthesis acetabular outer cup and common group of acetabular bone liner At a set of hip prosthesis, to form final joint motions.

Type femoral bone end prosthesis fixed form is usually bion and two kinds of bone-cement type, the former bion outer surface and femur marrow The sclerotin of chamber fits to form bone interface；The latter is inserted into bone-cement type femoral stem by Cement fixation pulp cavity, in a timing In with bone cement solidify bone cement femoral stem that it is bonded therewith can it is secondary sink even multiple sinking shape, formed firm Effect.

Usually, bone-cement type implantation material can obtain faster incipient stability effect, shorten the reply period of patient.But Be will appear secondary the case where overhauling, such as postoperative a period of time generate loosen, handle neck cracking, shank body excessive convergence situations such as. Then prosthese just inevitably being replaced in reprocessing operation while removing remaining bone cement, the bone cement of this period is very It is hard, usually during removal can the related significant component of self bone amount of removal, due to bone-cement type be suitable for sclerotin Loose, the Primary replacement of the elderly of sclerotin condition difference, secondary overhaul is exactly secondary to causing originally with regard to poor sclerotin in fact Injury.

Utility model content

The utility model is intended to provide a kind of type femoral bone end prosthesis component, to solve to break in secondary revision procedure in the prior art The problem of bad original bone amount.

To achieve the goals above, the utility model provides a kind of type femoral bone end prosthesis component, comprising: interlayer prosthese is used In being assembled in pulp cavity, interlayer prosthese includes: cylindrical base body and first connecting portion, and cylindrical base body has inner cavity, first connecting portion It is intracavitary including setting, synosteosis layer is formed on the outer surface of cylindrical base body；Type femoral bone end prosthesis is worn in the lumen, and femoral stem is false The cooperation that second connecting portion, interlayer prosthese and type femoral bone end prosthesis are provided on body by first connecting portion and second connecting portion is removable It links together with unloading.

Further, first connecting portion is the threaded hole that the bottom of inner cavity is arranged in, and second connecting portion is to be arranged in femur Through-hole inside handle prosthese, type femoral bone end prosthesis component further include the fastener for being threaded through in through-hole and cooperating with threaded hole, fastening The first end of part is provided with the external screw thread with threaded hole cooperation.

Further, through-hole is stepped hole, and stepped hole includes the first through hole section being relatively large in diameter and diameter lesser second The junction of through hole section, first through hole section and the second through hole section forms step surface, and the second end of fastener is provided with and step surface The bolt head of cooperation is provided with handle hole on the surface of bolt head.

Further, type femoral bone end prosthesis component further includes jackscrew plug, and jackscrew plug is connected in the second through hole section and position In the one end of fastener far from threaded hole.

Further, by being threadedly engaged between jackscrew plug and the second through hole section.

Further, cylindrical base body is made of metal material.

Further, synosteosis layer is trabecular bone structure layer.

Further, trabecular bone structure layer is made up of 3D printing.

Further, interlayer prosthese further include: fixed spine is arranged in the circumferential exterior surface of cylindrical base body, fixed point Thorn extends with gradually tapering up from the inside to the outside.

Further, interlayer prosthese further include: the one end of cylindrical base body far from its opening is arranged in plug.

Using the technical solution of the utility model, type femoral bone end prosthesis component includes the interlayer vacation being removably joined together Body and type femoral bone end prosthesis.Interlayer prosthese and type femoral bone end prosthesis fit together before being implanted into the pulp cavity to patient.Interlayer is false Body and type femoral bone end prosthesis are cooperated together by first connecting portion and second connecting portion.Type femoral bone end prosthesis group after assembling Part and existing type femoral bone end prosthesis shape are essentially identical, and shape is adapted with femoral bone cavitas medullaris.The utility model utilizes tubular base The synosteosis layer formed on external surface forms biological fixation in conjunction with patient's sclerotin.Using the type femoral bone end prosthesis of the utility model Component, when secondary overhaul occurs, interlayer prosthese has passed through synosteosis layer and has formed biological fixation layer in conjunction with the sclerotin of patient, Interlayer prosthese and type femoral bone end prosthesis are separated, and interlayer prosthese is made to retain and only take out type femoral bone end prosthesis, guarantor can be played in this way Protect the sclerotin in pulp cavity, so these sclerotin will not be remained by broken ring, aforesaid operations good sclerotin and it is good With effect.After taking out type femoral bone end prosthesis, the false intracorporal cavity of interlayer exposes, and is packed into new type femoral bone end prosthesis at this time.Therefore, The technical solution of the utility model is able to solve the problem of destroying original bone amount in secondary revision procedure in the prior art.This is practical Novel technical solution is easily accomplished revision procedure under the premise of not losing sclerotin, while reducing operation difficulty, shortens operation Time.

Detailed description of the invention

The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model. In the accompanying drawings:

Fig. 1 shows the structural schematic diagram of the embodiment of type femoral bone end prosthesis component according to the present utility model；

Fig. 2 shows enlarged diagrams at the A of the type femoral bone end prosthesis component of Fig. 1；And

Fig. 3 shows enlarged diagram at the B of the type femoral bone end prosthesis component of Fig. 1.

Wherein, the above drawings include the following reference numerals:

10, interlayer prosthese；11, cylindrical base body；12, first connecting portion；13, synosteosis layer；20, type femoral bone end prosthesis；21, Two interconnecting pieces；31, fastener；311, bolt head；312, handle hole；32, jackscrew plug.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to this is practical Novel and its application or any restrictions used.Based on the embodiments of the present invention, those of ordinary skill in the art are not having Every other embodiment obtained under the premise of creative work is made, is fallen within the protection scope of the utility model.

It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.

Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments Up to the unlimited the scope of the utility model processed of formula and numerical value.Simultaneously, it should be appreciated that for ease of description, each shown in attached drawing The size of a part is not to draw according to actual proportionate relationship.For skill known to person of ordinary skill in the relevant Art, method and apparatus may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as awarding Weigh part of specification.In shown here and discussion all examples, any occurrence should be construed as merely example Property, not as limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar Label and letter similar terms are indicated in following attached drawing, therefore, once be defined in a certain Xiang Yi attached drawing, then with In attached drawing afterwards do not need that it is further discussed.

As shown in Figure 1, the type femoral bone end prosthesis component of the present embodiment includes: interlayer prosthese 10 and type femoral bone end prosthesis 20.Wherein, For interlayer prosthese 10 for being assembled in pulp cavity, interlayer prosthese includes: cylindrical base body 11 and first connecting portion 12, and cylindrical base body 11 has It is intracavitary including thering is inner cavity, first connecting portion 12 to be arranged, synosteosis layer 13 is formed on the outer surface of cylindrical base body 11.Type femoral bone end prosthesis 20 wear in the lumen, and second connecting portion 21 is provided on type femoral bone end prosthesis 20, and interlayer prosthese 10 and type femoral bone end prosthesis 20 pass through The cooperation of first connecting portion 12 and second connecting portion 21 is removably joined together.

Using the technical solution of the present embodiment, type femoral bone end prosthesis component includes the interlayer prosthese being removably joined together 10 and type femoral bone end prosthesis 20.Interlayer prosthese 10 and type femoral bone end prosthesis 20 fit together before being implanted into the pulp cavity to patient. Interlayer prosthese 10 and type femoral bone end prosthesis 20 are cooperated together by first connecting portion 12 and second connecting portion 21.After assembling Type femoral bone end prosthesis component and existing type femoral bone end prosthesis shape it is essentially identical, shape is adapted with femoral bone cavitas medullaris.This implementation Example forms biological fixation in conjunction with patient's sclerotin using the synosteosis layer 13 formed on 11 outer surface of cylindrical base body.Using this implementation The type femoral bone end prosthesis component of example, when secondary overhaul occurs, interlayer prosthese has passed through the sclerotin knot of synosteosis layer 13 Yu patient Conjunction forms biological fixation layer, separates interlayer prosthese and type femoral bone end prosthesis 20, and interlayer prosthese is made to retain and only take out femoral stem Prosthese 20 can play the sclerotin in protection pulp cavity in this way, and then these sclerotin will not remain good by broken ring, aforesaid operations Good sclerotin and good matching effect.After taking out type femoral bone end prosthesis 20, the false intracorporal cavity of interlayer exposes, and is packed at this time new Type femoral bone end prosthesis 20.Therefore, the technical solution of the present embodiment is able to solve in secondary revision procedure in the prior art and breaks The problem of bad original bone amount.The technical solution of the present embodiment is easily accomplished revision procedure, simultaneously under the premise of not losing sclerotin Operation difficulty is reduced, operating time is shortened.

Above-mentioned new type femoral bone end prosthesis can be bone-cement type femoral stem, intracavitary filling bone water including needing when being implanted at this time Mud, then bone-cement type femoral stem is selected to be implanted into.It can certainly select the type femoral bone end prosthesis with second connecting portion.It can basis The type to select type femoral bone end prosthesis is actually needed.

As shown in figures 1 and 3, in the technical scheme of this embodiment, first connecting portion 12 is that the bottom of inner cavity is arranged in Threaded hole, second connecting portion 21 is the through-hole being arranged in inside type femoral bone end prosthesis 20, and type femoral bone end prosthesis component further includes wearing Fastener 31 in through-hole and with threaded hole cooperation, the first end of fastener 31 are provided with the external screw thread with threaded hole cooperation. Threaded hole and external screw thread are easily worked, and attended operation is simple and convenient.In the present embodiment, the external screw thread and spiral shell of fastener 31 Pit is connected so that type femoral bone end prosthesis 20 to be fixed on to the inside of interlayer prosthese 10.Above-mentioned fixed form operation is simple, handling ease.

As shown in Fig. 2, in the present embodiment, through-hole is stepped hole, stepped hole include the first through hole section being relatively large in diameter and The junction formation step surface of lesser second through hole section of diameter, first through hole section and the second through hole section, the second of fastener 31 End is provided with the bolt head 311 with step surface cooperation, is provided with handle hole 312 on the surface of bolt head 311.Bolt head 311 On the one hand the tightening operation for being used for fastener 31 is set, on the other hand for by cooperating resected femur handle prosthese with step surface 20.When secondary overhaul occurs, it is only necessary to separate the external screw thread of fastener i.e. with threaded hole by operating aforesaid operations hole 312 Type femoral bone end prosthesis 20 can be taken out from the inside of interlayer prosthese 10.

As depicted in figs. 1 and 2, in the technical scheme of this embodiment, type femoral bone end prosthesis component further includes jackscrew plug 32, Jackscrew plug 32 is connected in the second through hole section and is located at the one end of fastener 31 far from threaded hole.Above-mentioned jackscrew plug 32 can Prevent fastener 31 from loosening, to influence the fixation between interlayer prosthese and type femoral bone end prosthesis 20.

Preferably, by being threadedly engaged between jackscrew plug 32 and the second through hole section.It is threadedly engaged handling ease and grasps Make simple.

In order to effectively protect to the sclerotin in pulp cavity, cylindrical base body 11 needs to have certain structure strong Degree, in the present embodiment, cylindrical base body 11 is made of metal material.

In the present embodiment, synosteosis layer 13 is trabecular bone structure layer.Further, trabecular bone structure layer passes through 3D printing It is made.Trabecular bone structure layer can rapidly form biological fixation layer in conjunction with sclerotin.

In order to guarantee the initial fixed effect of interlayer prosthese, interlayer prosthese further include: fixed spine is arranged in cylindrical base body Circumferential exterior surface on, fixed spine extends with gradually tapering up from the inside to the outside.Above-mentioned fixation spine can be planted in interlayer prosthese When entering in the pulp cavity of patient, cooperation is generated, and then between other sclerotin convenient for initial fixed.

In the present embodiment, interlayer prosthese further include: the one end of cylindrical base body 11 far from its opening is arranged in plug.Have When a little, remote plug can be implanted into before implanted femur handle.Being implanted into remote plug can be carried out by a tool.In the present embodiment In, it is provided with plug, which can connect with remote plug before implantation, form synchronous implantation, simplify implantation step.

It can be seen from the above description that the above embodiments of the utility model achieve the following technical effects:

Type femoral bone end prosthesis component includes the interlayer prosthese and type femoral bone end prosthesis being removably joined together.Interlayer prosthese and Type femoral bone end prosthesis fits together before being implanted into the pulp cavity to patient.Interlayer prosthese and type femoral bone end prosthesis pass through the first connection Portion and second connecting portion cooperate together.Type femoral bone end prosthesis component and existing type femoral bone end prosthesis shape base after assembling This is identical, and shape is adapted with femoral bone cavitas medullaris.The utility model using the synosteosis layer formed on cylindrical base body outer surface with Patient's sclerotin combines and forms biological fixation.Using the type femoral bone end prosthesis component of the utility model, when secondary overhaul occurs, interlayer Prosthese has passed through synosteosis layer and has formed biological fixation layer in conjunction with the sclerotin of patient, makes interlayer prosthese and type femoral bone end prosthesis point From, and interlayer prosthese is made to retain and only take out type femoral bone end prosthesis, the sclerotin in protection pulp cavity, and then these bones can be played in this way Matter will not remain good sclerotin and good matching effect by broken ring, aforesaid operations.After taking out type femoral bone end prosthesis, folder The false intracorporal cavity of layer exposes, and is packed into new type femoral bone end prosthesis at this time.Therefore, the technical solution of the utility model can solve The problem of certainly destroying original bone amount in secondary revision procedure in the prior art.The technical solution of the utility model is not losing sclerotin Under the premise of, it is easily accomplished revision procedure, while reducing operation difficulty, shortens operating time.

In the description of the present invention, it should be understood that the noun of locality such as " front, rear, top, and bottom, left and right ", " laterally, Vertically, vertically, it is horizontal " and " pushing up, bottom " etc. indicated by orientation or positional relationship be normally based on orientation or position shown in the drawings Relationship is set, is merely for convenience of describing the present invention and simplifying the description, in the absence of explanation to the contrary, these nouns of locality Do not indicate that and imply that signified device or element must have a particular orientation or be constructed and operated in a specific orientation, because This should not be understood as the limitation to scope of protection of the utility model；The noun of locality " inside and outside " refers to the wheel relative to each component itself Wide is inside and outside.

For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ", " ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction " Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and " in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and And respective explanations are made to the opposite description in space used herein above.

In addition, it should be noted that, limiting components using the words such as " first ", " second ", it is only for be convenient for Corresponding components are distinguished, do not have Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore should not be understood as to this The limitation of utility model protection range.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of type femoral bone end prosthesis component characterized by comprising

Interlayer prosthese (10), for being assembled in pulp cavity, the interlayer prosthese includes: cylindrical base body (11) and first connecting portion (12), the cylindrical base body (11) has inner cavity, and the first connecting portion (12) is arranged in described interior intracavitary, the cylindrical base body (11) synosteosis layer (13) are formed on outer surface；

Type femoral bone end prosthesis (20), is threaded through in the inner cavity, is provided with second connecting portion (21) on the type femoral bone end prosthesis (20), The interlayer prosthese (10) and the type femoral bone end prosthesis (20) pass through the first connecting portion (12) and the second connecting portion (21) cooperation is removably joined together.

2. type femoral bone end prosthesis component according to claim 1, which is characterized in that the first connecting portion (12) is that setting exists The threaded hole of the bottom of the inner cavity, the second connecting portion (21) are setting in the logical of the type femoral bone end prosthesis (20) inside Hole, the type femoral bone end prosthesis component further include the fastener (31) for being threaded through in the through-hole and cooperating with the threaded hole, institute The first end for stating fastener (31) is provided with the external screw thread cooperated with the threaded hole.

3. type femoral bone end prosthesis component according to claim 2, which is characterized in that the through-hole is stepped hole, the ladder Hole includes the first through hole section being relatively large in diameter and lesser second through hole section of diameter, the first through hole section and second through-hole The junction of section forms step surface, and the second end of the fastener (31) is provided with the bolt head with step surface cooperation (311), handle hole (312) are provided on the surface of the bolt head (311).

4. type femoral bone end prosthesis component according to claim 3, which is characterized in that the type femoral bone end prosthesis component further includes top Plug (32), the jackscrew plug (32) are connected in second through hole section and are located at the fastener (31) far from described One end of threaded hole.

5. type femoral bone end prosthesis component according to claim 4, which is characterized in that the jackscrew plug (32) and described second By being threadedly engaged between through hole section.

6. type femoral bone end prosthesis component according to claim 1, which is characterized in that the cylindrical base body (11) is by metal material It is made.

7. type femoral bone end prosthesis component according to claim 1, which is characterized in that the synosteosis layer is trabecular bone structure Layer.

8. type femoral bone end prosthesis component according to claim 7, which is characterized in that the trabecular bone structure layer passes through 3D printing It is made.

9. type femoral bone end prosthesis component according to claim 1, which is characterized in that the interlayer prosthese further include:

Fixed spine, is arranged in the circumferential exterior surface of the cylindrical base body, the fixed spine gradually tapers up ground from the inside to the outside Extend.

10. type femoral bone end prosthesis component according to claim 1, which is characterized in that the interlayer prosthese further include:

Plug is arranged in the one end of the cylindrical base body (11) far from its opening.