CN2167689Y - Artificial hipbone component - Google Patents
Artificial hipbone component Download PDFInfo
- Publication number
- CN2167689Y CN2167689Y CN 93222173 CN93222173U CN2167689Y CN 2167689 Y CN2167689 Y CN 2167689Y CN 93222173 CN93222173 CN 93222173 CN 93222173 U CN93222173 U CN 93222173U CN 2167689 Y CN2167689 Y CN 2167689Y
- Authority
- CN
- China
- Prior art keywords
- stem
- prosthesis
- utility
- model
- femoral
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 210000001981 hip bone Anatomy 0.000 title abstract description 3
- 210000000689 upper leg Anatomy 0.000 claims description 13
- 210000003484 anatomy Anatomy 0.000 claims description 8
- 210000000988 bone and bone Anatomy 0.000 abstract description 7
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 210000001624 hip Anatomy 0.000 description 6
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241001061264 Astragalus Species 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 241000699666 Mus <mouse, genus> Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 235000006533 astragalus Nutrition 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 210000002436 femur neck Anatomy 0.000 description 1
- 210000002414 leg Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 210000004233 talus Anatomy 0.000 description 1
- 150000003608 titanium Chemical class 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Images
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- Prostheses (AREA)
Abstract
The utility model relates to a femoral component of an artificial hipbone, which is composed of a far-end stem part, a middle body part and a near-end neck part. Anatomically speaking, the component coincides with the femoral bones of Asian or oriental patients, wherein, the stem part is provided with a near-end position bended backward, a far-end position bended forward and positioned below the bended near-end position, and a round tip; inversely, a body part is provide with an asymmetric cross-section, and the width and the switch of the body part are arranged in such a way as to actually fit with and fill in a femoral canal via the middle piece of the near end.
Description
This utility model means a kind of artificial hip assembly, refers to a kind of distal femoral component of artificial hip especially.
Be used for Asia or Asians patient artificial hip on one's body, all be at the designed person of white people in the past.Because this artificial hip is not designed at Asia or Asians patient specially, so the not enough industry of the fitness of all kinds of problems, especially these grafts really can't be suitable for for a long time.
The problem that size and dimension does not conform to if be contained on one's body Asia or the Asians patient, will take place in the existing graft designed according to white people.In order to overcome these problems, thereby specialized designs goes out the Prosthesis of this utility model.Especially, the Prosthesis of this utility model is behind the femur that studied many Asia and Asians in great detail, selected its size and dimension of beginning.
Be with, this utility model provides a kind of distal femoral component of artificial hip, this assembly is made of a far-end stem, an intermediate host portion and a near-end cervical region.With regard to anatomy, be harmonious with Asia or Asians patient's femur.
At the research that Asia and Asians's femur are carried out, have found that size before and after its bone pipe is greater than inside and outside size.Though white femur also is so, compare greater than Asia or Asians with interior outside dimension before and after its bone pipe.Therefore, the Prosthesis of this utility model is just listing the characteristics on this anatomy in consideration in shape, so can be inserted in the femoral canal easily.With regard to the Prosthesis's of this utility model far-end stem, before and after it size system greater than, or preferably essence equals its inside and outside size.
Simultaneously, the tip of far-end stem also rounds, and preferably this tip being done into essence is spheric shape.
Have now found that if compare with white people, Asia and Asians's femoral canal average-size is less.Characteristics on this anatomy were listed consideration in already on stem's size of the Prosthesis of this utility model.Be with, the size of far-end stem and tip thereof is decided by patient's femoral size.The Prosthesis of this utility model has the stem of size of all kinds, and for example 7mm rises behind the width, has 7,8,9,10,11,12-1/2,13,14 and 15mm or the like.The size of the size of stem, particularly its tip should unlikelyly when transplanting be fixed in the femoral canal, stiffly in order to avoid this stem and tip thereof can be to patient's bone build-ups of pressure.
At the research that Asia and Asians's femur are carried out, also find in addition its femoral head to the average distance in gorge, femoral canal if compare with white femur, shorter usually.Moreover, Asia or Asians's femur no matter aspect other how, its strand head is constant in fact to the distance in gorge, femoral canal.Relatively, the distance of white femur from its femoral head to the gorge, femoral canal can increase with work when gorge, femoral canal shield directly increases usually.Characteristics on these anatomy are also listed among the consideration of the present utility model.With regard to the Prosthesis of each molded dimension under this utility model, constant on the wide matter of length from middle shoulder to femur stem tip.The constant length of this essence is between 135 to 165mm, but preferably between 145 to 150mm, for example 145mm.
When being to transplant, the Prosthesis's of this utility model a purpose can cooperate with whole available femoral canal essence and it be filled up.Be white people patient's designed artificial device, if be used for to produce wedge-like engagement unsatisfactory on one's body Asia or the east patient in the past.For improving this measure, the Prosthesis of this utility model just curves far-end stem tip.With regard to the Prosthesis of each molded dimension of this utility model, identical on the nature and extent small house matter of stem's curvature.If with for the designed Prosthesis that commonly uses of white people patient compares, the Prosthesis's of this utility model Mus stem curvature has allows the sensation of people's " tighter ".This stem is to bending towards work back/the place ahead.If from the outside or the inboard watch, the axis that can see stem is earlier towards palintrope, now is again towards antecurvature.The rear end of stem with the part of main part adjacency, is towards palintrope just partly.The radius of back flexibility can be between 400 to 600mm, and for example 450 to 500, just can be about 500mm.In addition, if from the outside or celestial side when watching, the distal portions of stem is towards antecurvature.This part is provided in a side of the below of the curved proximal end part of stem, then fortunately stem's tip directly over.The radius of the curvature of this distal bent part can be between 300 to 500mm, for example between 350 to 450, and just can be about 400mm.
If from the place ahead or rear when watching, stem seems that essence is straight, that is to say, if from that viewpoint, the axis of stem is walked back and forth the Buddhist position on the straight straight line of essence.
Far-end stem preferably does the some of its total length to become to have the constant cross section of essence.From this beginning, upwards produce to be and to widen its width simultaneously towards the work intermediate host.The constant part of cross section small house matter, its length can become with work Prosthesis's overall size.For example, be as the criterion with overall size, stem's length overall can have the variation between 60% to 25%, if when Prosthesis's overall size increases, just this variations ratio reduces with showing.
Under the set condition of stem's width, if the commonly use Prosthesis designed with aiming at white people patient compares, the Prosthesis's of this utility model main part (or claiming stage casing or close end) broad.Be as the criterion with a center line that extends through the cross section towards outstanding inside/outside direction, this Prosthesis's main part has asymmetric cross section.The shared ratio in this center line the place ahead of main part is greater than the rear.Compare with commonly using the Prosthesis, this measure helps to fill up the middle crack district of femoral canal near-end.This part obtains the effect of good cooperation, the Prosthesis of this utility model free-revving engine just in the femoral canal.If the size (width) of the Prosthesis's of this utility model far-end stem is when increasing, and the width of this intermediate host portion also can increase with work.In addition, the cross section of main part is towards palintrope, so that the leaning forward naturally of the femur of turning back.
The inboard of main part is provided with a shoulder, and the top that this shoulder is in use with the patient has adorned appropriate femoral neck keeps flushing.
Main part also the apparatus that can promote its fixed effect can be set, the some through holes that can wear from the Prosthesis front to the back for example are set.The shape in these apertures is regardless of, and for example circular, square or triangle is as long as be suitable for.
The Prosthesis's of this utility model cervical region is made to hold for the head of artificial hip and is received thereon.The head that this neck portion design one-tenth can install various sizes holds to be received thereon.This neck portion design becomes can install the head of various sizes, increases its practicality according to this.Have now found that the bias levels of axis comes for a short time than white people among Asia or Asians patient's femoral head and the femoral axis.Characteristics on this anatomy are also considered the Prosthesis of this utility model.When if the Prosthesis's of this utility model size changes to some extent, this biasing also changes with work.Usually this biasing is between 30 to 50mm, for example 35 arrives 45mm.
The Prosthesis's of this utility model cervical region must be variable or constant person on its length.
The Prosthesis of this utility model can (modularity 0 head share, and perhaps also can device establishes the head with its formation one with separate type.
The Prosthesis of this utility model no matter be a left side or right femur to the patient, all is suitable for.
The Prosthesis's of this utility model materials being fabricated can be any material of commonly using that is suitable for the manufacture of intraocular graft, for example rustless steel and titanium, and the alloy material of cobalt/chromium and this class of titanium alloy.
The Prosthesis of this utility model can not be coated with coating, or is coated with last layer coating on its part or all surface, for example ventilative coating.Because the area that intermediate host portion contacts with bone is very big, so the most handy ventilative coating.As for stem, then preferably adopt level and smooth airtight coating.
The Prosthesis of this utility model can not add bone mud in use.
The Prosthesis of this utility model is special in Asia or the designed a kind of distal femoral component of Asians patient's structoure of the human body, so have best long-term device effect.Far-end stem designs according to variation complicated on the anatomy of near-end and distal femoral fully, so help to fill up the near-end femoral canal, rotation of playing stably according to this and removal proximal pressure make astragalus obtain to save from damage.Because stem's tip that the Prosthesis of this utility model has level and smooth far-end stem and does wholecircle shape so need not use toggle or strand nail, also need not adopt the far-end fixation, to avoid near-end stress shielding effect.In addition, if the Prosthesis of this utility model is when being coated with ventilative coating, the friendship fruit that more can bring into play biological fixation.When the Prosthesis of this utility model used the modularity head, the vast variation of its neck length scope of imitating can be guaranteed the best leg length that obtains suitable joint clearance and have the stable engagement effect.In addition, the excursion of stem's size and about all spendable my frock put, more a step guarantees to obtain best fiting effect.
Now for embodiment and cooperate graphic, after this utility model is described in more detail in, wherein:
Fig. 1 is the side view of artificial joint the right embodiment of this utility model;
Fig. 2 is the front view of artificial joint shown in Figure 1, and has three modularity bones shown in dotted line; And
Fig. 3 is an a) C-C line in Fig. 2, b) B-B line, and c) profile that intercepted of A-A line.
The prosthesis 1 of this utility model comprises a stem 2, one main parts 3 and a cervical region 4.Stem 2 is provided with a far-end cantle Duan Yuyi near-end anterior arch section.In other words, on anatomy, the near-end of stem 2 (position 5) is curved from front to back (consulting the side view of Fig. 1), and far-end (position 6) then is curved back to front, then is rounded tip 7 at last.If when the place ahead is watched, stem 2 straight in fact (consulting Fig. 2).Stem 2 cross section essence originally is constant (position 8), but just expands to main part 3 towards work front and back and inside/outside direction afterwards always.The inboard of main part 3 is provided with a shoulder 9, and the neck of cutting that this shoulder is in use with the patient has adorned appropriate femur (not shown) keeps flushing.Cervical region 4 is that shape then is a protrusion with the circular cross section of slightly dwindling from extension from inside to outside above the Ministry of Revenue 9.Can one modularity head 10 be set according to required ratio at cervical region 4.The degree of depth in its recessed crack of conversion is contained in the head 10 on the cervical region 4, as long as just can make the length overall of cervical region change with work.As shown in Figure 2, head 10b placed in the middle belongs to full-length person.Occupy outer head 10c and can make the length overall of stem/head have more 6mm, otherwise head 10a then can make the length overall of stem/head than standard person 6mm in occupying than full-length.
Size A shown in each cross section of Fig. 3, B, C and D depend on the size of prosthesis and decide.Wherein the size of far-end stem inside and outside (size A) and front and back (size B) can be between 7 to 15mm.For the prosthesis with aforementioned dimensions, the inside/outside size (size C) of main part can be at 22mm between the 40mm, as for its front/rear size (dimension D), and then can be between 11 to 21mm.
Claims (1)
1, a kind of distal femoral component of artificial hip, it is characterized in that: constituted by a far-end stem, an intermediate host portion and a near-end cervical region, with regard to anatomy, this assembly and Asia or Asians patient's femur is harmonious, wherein stem is provided with the near-end position, one of palintrope on one day below this curved proximal end position and towards an antecurvature distal site and a rounded tip, otherwise main part has asymmetric cross section, simultaneously its width and switch be set as be enough to the femoral canal can with near-end stage casing district essence cooperate and it filled up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93222173 CN2167689Y (en) | 1993-08-23 | 1993-08-23 | Artificial hipbone component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93222173 CN2167689Y (en) | 1993-08-23 | 1993-08-23 | Artificial hipbone component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2167689Y true CN2167689Y (en) | 1994-06-08 |
Family
ID=33800833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93222173 Expired - Lifetime CN2167689Y (en) | 1993-08-23 | 1993-08-23 | Artificial hipbone component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2167689Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100413480C (en) * | 2004-05-28 | 2008-08-27 | 科润泰克株式会社 | Femoral shaft of artificial hip joint and method of processing neck thereof |
| WO2010063167A1 (en) * | 2008-12-04 | 2010-06-10 | 北京纳通投资有限公司 | Artificial femoral stem and artificial total hip replacement prosthesis thereof |
| CN107647944A (en) * | 2017-10-13 | 2018-02-02 | 北京爱康宜诚医疗器材有限公司 | Femoral prosthesis |
-
1993
- 1993-08-23 CN CN 93222173 patent/CN2167689Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100413480C (en) * | 2004-05-28 | 2008-08-27 | 科润泰克株式会社 | Femoral shaft of artificial hip joint and method of processing neck thereof |
| WO2010063167A1 (en) * | 2008-12-04 | 2010-06-10 | 北京纳通投资有限公司 | Artificial femoral stem and artificial total hip replacement prosthesis thereof |
| CN107647944A (en) * | 2017-10-13 | 2018-02-02 | 北京爱康宜诚医疗器材有限公司 | Femoral prosthesis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |