CN101006946A

CN101006946A - Artificial femur structure

Info

Publication number: CN101006946A
Application number: CN 200610002718
Authority: CN
Inventors: 郑诚功; 魏鸿文; 吕玉蓉
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-01-25
Filing date: 2006-01-25
Publication date: 2007-08-01

Abstract

The invention discloses an artificial femur structure, which comprises the following parts: chassis corresponding to fill defect, plural limit groove with hole on the periphery, support crank in the hole, joint end on one end of support crank, bone crank end on the other end with tapering segment, limit bond in the plural limit groove to define the position of joint end.

Description

Artificial femur structure

Technical field

The present invention relates to a kind of artificial femur structure, particularly relate to a kind of artificial femur structure that medical-therapeutic treatment of human body substitutes usefulness that is used for.

Background technology

Human with advancing age, each position organ dysfunction of bodily tissue is degenerated in succession; And old people's femur, under all the year round use wearing and tearing, often can't be as the activity as the normal person, or because of osteoporosis, or accident causes the neck of femur fracture to take action; But along with medical skill is constantly progressive, the medical thing that the problem of femur wear and rupture just can artificial femur is got and is treated human original femur; Yet, concerning healthcare givers and sufferer, can solve following long problem at present, be only the task of top priority:

One, after having implanted artificial femur, whether the angle of the corresponding pelvis of femur corresponds to the angle of primary femur, so the patient must bear the problem that adapts to new femur angle; And

Two, hospital must bear the cost of the artificial femur that stores the standard angle, and has the high expense that the patient who is different from the standard angle must bear customized new femur.

Because above-mentioned two problems as if selecting one to handle, all solve quite easily, but, be the difficult problem in the design in fact if both have concurrently.

Medical profession is generally in the process of handling the implantable artificial femoral stem at present, be that the muscle that at first will coat the femur place cuts, the place amputates together with femoral head at neck of femur, surface rubbing after will amputating again, and by the cutting instrument this plane is knocked and to punching, waiting punchinges correctly implants artificial femur handle after finishing again and enters femur bone marrow in the hole; Just can observe the situation of femur and artificial femur handle healing in the future; And the design of artificial femur handle, directly influence in the future femur engages whether firm principal element with artificial femur handle, if do not make the artificial femur handle deisgn product of this consideration, the situation that nearly all can cause femur to engage in the future with artificial femur handle, the problem of the lax or length foot of leg muscle can appear in the patient, and faces the destiny that need undergo surgery again once more.

Therefore, present known artificial femur structure, mostly as " artificial hip joint " of No. the 359159th, TaiWan, China patent announcement No. 268276 " femoral hip prosthesis prothesis implant body " and TaiWan, China patent announcement, wherein disclosed a kind of upper face, be processed into how prominent granular artificial femur handle; This kind structural design, though can increase a little stablizing effect, after but practice is implemented, but not as Expected Results, its reason is: because of people's bone formation, if good growth will be arranged, just must often use with movable, but for the contact surface of femur and artificial femur handle, will cause relative fine motion, this fine motion overslaugh femur just is attached to the biggest factor on the artificial femur handle; Therefore, prominent granulous artificial femur handle design more than this kind can only be said so at most and utilize prominent grain to reach minimizing because of the fine motion that activity caused, and can't really be solved the problem that femur firmly is engaged in artificial femur handle; And, need consider the adaptive problem of human body again.Notice be to have an angle between the femoral head of femoral stem, and everyone angle differs, yet the employed artificial femur in market is all for easy to manufacture and be set to the design of special angle; If replace primary femur with specific standard angle artificial femur, then the patient promptly can produce incompatible sense after using this kind artificial femur, also can cause the acetabular cup that continues the wearing and tearing patient as mentioned above.

Yet, the project organization of above-mentioned two patents, owing to all can't really solve the problem that exists for a long time, therefore, announce No. 5906644 " modularity adaptability surgical implant (Adjustable Modular Orthopedic Implant); wherein disclosed a kind of surgical implant that adapts to adjustment; be specially adapted to hip joint; shoulder joint or knee joint; the reason of form to adapt to adjusting angle then is because correspondence is provided with and makes its fastening tapering on its assembly; but this kind taper design and can't complete its angle of fastening setting as United States Patent (USP), still might form corresponding the slip, and this may be real in human body be unallowed.

In addition, before excision damaged skeleton, the doctor must do to excise original skeleton breakage again after the assessment at the damaged condition of original skeleton, and the defective that the excision back produces reinstalls the artificial bone of suitable this defective of cooperation.No. the 6702845th, United States Patent (USP) " property implanted artificial joint (Implantable jointprosthesis) ", be to include shank (stem portion) and cervical region (neck portion) both fix and the artificial femur that forms, wherein shank (stem portion) and cervical region (neck portion) respectively correspondence possess key portion is arranged (keyed portio) and containing hole (receiving slot), and relative shank (stem portion) deflection angle of the gudgeon (trunnion) that defines this cervical region (neck portion), to adapt to the former thigh skeleton of human body deflection angle, and on it, following affixed shank (stem portion) and cervical region (neck portion), be cylinder type embolus (cylindrical spigot) Joint, and can have the problem that gets loose with convex.

In gross, for hospital, be convenient to store in a warehouse, use the most important for the patient to reduce storage cost and to select suitable, the most firm artificial femur, the convenient installation for use; For the patient, perform the operation comfortableness and safety with low cost, after changing are main considering; For manufacturer, easy to manufacture, cheap for manufacturing cost is main purpose.And aforementioned previous prior art all can't satisfy tripartite considering, and historical facts or anecdotes has necessity of improvement.

This shows that above-mentioned existing artificial femur structure obviously still has inconvenience and demands urgently further being improved with defective in structure and use, this obviously is the problem of relevant dealer's urgency desire solution.Therefore how to found a kind of new artificial femur structure, just become the current industry utmost point to need improved target.

Summary of the invention

The objective of the invention is to, overcome the defective that existing artificial femur structure exists, and provide a kind of new artificial femur structure, technical problem to be solved is to make it be intended for the reconstruction structure that substitutes original femoral hip prosthesis head of human body thigh skeleton and neck tissue excision back formation defective thereof, can select corresponding former Thigh bone angle excursion to rotate, and be respectively equipped with the definition stopper slot of this angle excursion and the mutual winding of positive stop key and form fastening location with pedestal and support shank, be very suitable for practicality.

Another object of the present invention is to, a kind of artificial femur structure is provided, technical problem to be solved is to make it can reduce the hospital storage area, utilizing this artificial femur handle is isolating design, and can corresponding change the required angle of patient and this defect size is selected multi-form support shank or pedestal for use, so needn't store the artificial femur handle of different systems size the selective use of artificial femur handle of various different angles can be arranged, thereby be suitable for practicality more.

A further object of the present invention is, a kind of artificial femur structure is provided, technical problem to be solved is to make it can reduce the medical expense that particular hip angle patient is arranged, and utilizes the patient of the present invention needn't customized especially artificial femur, and can reduce its medical expense.

An also purpose of the present invention is, a kind of artificial femur structure is provided, technical problem to be solved is to make it only mutually urgent fixing and form with the pedestal of two-piece type and support shank, must the complicated processing program or assembly program can finish artificial femur structure, and can reduce processing and built-up time in a large number, and then can reduce time cost.

The object of the invention to solve the technical problems realizes by the following technical solutions.A kind of artificial femur structure according to the present invention's proposition, be used to replace the reconstruction structure of former human body Thigh bone bone 3 femoral hip prosthesis heads and neck tissue excision back formation defective 30 thereof, it comprises: a corresponding pedestal 10 of filling this defective 30, and this pedestal 10 is provided with a plurality of stopper slots 12 that possess the perforation 11 of tapering 13 and be located at these 11 peripheries of boring a hole; One is arranged in the support shank 20 in this perforation 11, one end of this support shank 20 is provided with a joint end 22, and the other end is a bone pommel 21, and it is urgent in the taper segment 212 of these 11 taperings 13 of boring a hole that this bone pommel 21 has a correspondence, and one and these a plurality of stopper slots 12 in one of match and set up the positive stop key of establishing 211 jointly, use the position of this joint end 22 of definition.

The object of the invention to solve the technical problems also adopts following technical measures further to realize.

Aforesaid artificial femur structure, wherein said stopper slot 12 are to spend angles at a distance of 30 with contiguous stopper slot 12 respectively by the center line in these 11 centers of circle of boring a hole by this center line of boring a hole 11 centers of circle.

After being equipped with and supplying this thigh skeleton 3 to live again, aforesaid artificial femur structure, wherein said bone pommel 21 be sticked in plurality of fixed groove 213 wherein.

Aforesaid artificial femur structure, wherein said joint end 22 is provided with a cervical region 222, in order to install a bone ball-and-socket.

Aforesaid artificial femur structure, wherein said pedestal 10 extend the platform part 14 that is provided with should defective 30 degree.

Aforesaid artificial femur structure, wherein said joint end 22 includes a pedestal, and this pedestal possesses radical length A and the axial length B that has should defective 30 degree.

The present invention compared with prior art has tangible advantage and beneficial effect.By technique scheme, the artificial femur structure of the present invention has following advantage at least:

1, the present invention is intended for the reconstruction structure that substitutes original femoral hip prosthesis head of human body thigh skeleton and neck tissue excision back formation defective thereof, it includes mutual winding in order to the pedestal of filling this defective and possess the joint end and the support shank of bone pommel, and for fastening both connection relationship, and corresponding patient's primary Thigh bone angle excursion, the bone pommel of this pedestal and support shank is then corresponding to be provided with perforation with tapering and taper segment and the socket that is fastened, so can select corresponding former Thigh bone angle excursion to rotate, and be respectively equipped with the stopper slot of this angle excursion of definition and the mutual winding of positive stop key and form fastening location with this pedestal and this support shank.

2, the present invention utilizes this artificial femur handle to design for separated structures, and can corresponding change the required angle of patient and this defect size is selected multi-form support shank or pedestal for use, so hospital needn't store the selective use of artificial femur handle that the artificial femur handle of different systems size promptly can have various different angles, not only be very suitable for practicality, and can reduce the storage area of hospital.

3, the present invention can reduce the medical expense that particular hip angle patient is arranged, and utilizes the patient of the present invention needn't customized especially artificial femur, and can reduce its medical expense.

4, artificial femur of the present invention structure is only mutually urgent fixing and form with the pedestal of two-piece type and support shank, must the complicated processing program or assembly program can finish artificial femur structure, process and built-up time so can reduce in a large number, and can reduce cost.

In sum, the invention relates to a kind of artificial femur structure, be used to replace original femoral hip prosthesis head of human body thigh skeleton and neck tissue thereof form defective after excision reconstruction structure, be to combine for a pedestal and a support shank that substitutes this thigh skeleton of filling this defective, wherein, this pedestal is provided with a perforation that possesses tapering, the taper segment that is provided with for the bone pommel correspondence of support shank wears and urgent engaging, be concaved with a plurality of stopper slots at this pedestal in this perforation periphery again, the stopper slot that is provided with for this support shank correspondence is arranged at one of them and defines the angle of this support shank joint end, and the design of planting artificial femur structure by this has the effect of firm this support shank of location, also can replace with the pedestal installing of correspondence at patient's skeletal defect excision place state.No matter it all has bigger improvement on product structure or function, have than much progress technically, and produced handy and practical effect, and more existing artificial femur structure has the multinomial effect of enhancement, thereby being suitable for practicality more, really is a new and innovative, progressive, practical new design.

Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of description, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.

Description of drawings

Fig. 1 is the stereoscopic sketch map of the artificial femur structure of the present invention.

Fig. 2 is the exploded perspective sketch map of the artificial femur structure of the present invention.

Fig. 3 is the generalized section of the artificial femur structure of the present invention.

Fig. 4-1～Fig. 4-the 2nd, the illustrative view of the artificial femur structure of the present invention.

Fig. 5-1～Fig. 5-the 3rd, the embodiment sketch map of the artificial femur structure of the present invention.

Fig. 6 is the use illustration intention of the artificial femur structure of the present invention.

The specific embodiment

Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to its specific embodiment of artificial femur structure, structure, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.

Seeing also Fig. 1, Fig. 2, shown in Figure 3, is respectively stereoscopic figure, exploded perspective view and the generalized section of the artificial femur structure of the present invention.As shown in the figure, the present invention is for being used for being used to replace the reconstruction structure of the defective that produces after primary thigh skeleton femoral hip prosthesis head and the neck tissue excision thereof.The artificial femur structure of preferred embodiment of the present invention includes a pedestal 10 in order to fill this defective, and a support shank 20 that is assembled on this pedestal 10, wherein:

This pedestal 10 which is provided with a perforation 11 that possesses tapering 13, and this pedestal 10 is provided with a plurality of stopper slots 12 at the periphery of this perforation 11;

This support shank 20 can be divided into the joint end 22 in order to installing bone ball-and-socket (not shown), and be assembled in former femoral bone pommel 21 after being arranged in this pedestal 10, wherein:

This joint end 22, possess a base portion 221 is arranged, this base portion 221 extends one section cervical region 222 with installing bone head shoot nest, and after this bone pommel 21 wore the perforation 11 of pedestal 10, the bottom surface of this base portion 221 reclines mutually with this pedestal 10, and the taper segment 212 that tapering 13 and this bone pommel 21 of pedestal 10 are provided with forms urgent fixed relationship, and the positive stop key 211 that is provided with by one of set a plurality of stopper slots 12 of this pedestal 10 and these bone pommel 21 correspondences, to define the required deviation angle of this cervical region 222.

This bone pommel 21 which is provided with a plurality of holddown grooves 213 that are depressed in this bone pommel 21, makes the patient behind this artificial femur structure 1 of packing into, can allow bone growth and clip in this holddown groove 213, more increases the effect of fixing this artificial femur structure 1.

See also shown in Fig. 4-1～Fig. 4-2, it is the illustrative view of the artificial femur structure of the present invention, as shown in the figure, artificial femur structure 1 of the present invention, be urgent and fixing with tapering 13 and taper segment 212 mutually with the pedestal 10 and the support shank 20 of two-piece type, utilize the positive stop key 211 and the stopper slot 12 of corresponding combination again, locate and define the angle of the former thigh skeleton of this cervical region 222 corresponding patients femoral hip prosthesis head.See also shown in the figure, be to be preferred embodiment of the present invention, this pedestal 10 is provided with three stopper slots 12, spend angles (but not limiting) at a distance of 30 with each stopper slot 12 respectively by the center line in these 11 centers of circle of boring a hole between the stopper slot 12, be obviously to represent the effect of angle difference, see also shown in Fig. 5-2 that extension possesses a platform part 14 on the pedestal 10 shown in this figure, and this platform part 14 is the same ends that are set to this stopper slot 12, and the patient bigger for defect level uses; Please cooperate and consult shown in Fig. 4-1～Fig. 4-2, can obviously understand 222 pairs of this cervical regions should positive stop key 211 can angulation with different stopper slot 12 configurations conversion, by this, the present invention can be according to the angle of the former thigh skeleton of patient femoral hip prosthesis head, before assembling artificial femur structure 1, make the angle initialization of correspondence earlier.

As previously discussed, before excision patient skeleton, must make assessment report at patient's skeleton infringement, and the position that each patient may excise varies and on-fixed, meaning is varying in size of defective, the present invention derives the mode of corresponding above-mentioned different defectives according to founding spirit in view of the above, see also Fig. 5-1～Fig. 5-3 and shown in Figure 6, be respectively embodiments of the invention and use illustration intention, as shown in the figure, size for the defective 30 of the different patient's thigh of correspondence skeleton 3, axially reaching of these joint end 22 relative these support shank 20 radially has axial length B and radical length A respectively, and this pedestal 10 corresponding different defectives 30 and possess the different diameters of axle is arranged, or extending one section platform part 14 increases bracing force to joint end 22, fills with correspondence to have big defective 30 thigh skeleton 3 partly.

Of the present invention focusing on: by possessing corresponding urgent pedestal 10 respectively and support shank 20 mutual windings form artificial femur structure 1 of the present invention, wherein pedestal 10 and support shank 20 have more the stopper slot 12 and positive stop key 211 that has these cervical region 222 angle excursions of definition respectively; By this, the present invention can reach in conjunction with this artificial femur structure 1 and reach localized effect, and easy to manufacture, there is no complicated assembly program or member.

In addition, can reduce the storing space of hospital greatly by artificial femur structure 1 of the present invention, utilize this artificial femur handle to design for separated structures, and can correspondingly change the required angle of patient, and this defect size is selected the support shank 20 of different axial length B and radical length A for use or is possessed the pedestal 10 of platform part 14, so need as have now the artificial femur handle that need store the different systems size the known product or customized, and can assemble by taking out artificial femur structure 1 in the warehouse at any time according to the defect level of skeleton, use for you to choose, so to hospital, medical treatment cost and time cost have been saved in patient or maker commercial city.

The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.

Claims

1, a kind of artificial femur structure is used to replace former human body Thigh bone bone (3) femoral hip prosthesis head and neck tissue is excised the reconstruction structure that the back forms defective (30), it is characterized in that it comprises:

One corresponding pedestal (10) of filling this defective (30), this pedestal (10) is provided with a plurality of stopper slots (12) that possess the perforation (11) of tapering (13) and be located at this perforation (11) periphery;

One is arranged in the support shank (20) in this perforation (11), one end of this support shank (20) is provided with a joint end (22), and the other end is bone pommel (21), and it is urgent in the taper segment (212) of this perforation (11) tapering (13) that this bone pommel (21) has a correspondence, and one and these a plurality of stopper slots (12) in one of match and set up the positive stop key of establishing (211) jointly, use the position of this joint end (22) of definition.

2, artificial femur structure according to claim 1 is characterized in that wherein said stopper slot (12) is to spend angles at a distance of 30 with contiguous stopper slot (12) respectively by the center line in this perforation (11) center of circle by the center line in this perforation (11) center of circle.

3, artificial femur structure according to claim 1 is characterized in that wherein said bone pommel (21) is equipped with the plurality of fixed groove (213) that is sticked in after this thigh skeleton (3) of confession is lived again wherein.

4,, it is characterized in that wherein said joint end (22) is provided with a cervical region (222), in order to install a bone ball-and-socket according to claim 1,2 or 3 described artificial femur structures.

5, artificial femur structure according to claim 4 is characterized in that wherein said pedestal (10) extends the platform part (14) be provided with should defective (30) degree.

6, artificial femur structure according to claim 4 is characterized in that wherein said joint end (22) includes a pedestal, and this pedestal possesses radical length (A) and the axial length (B) that has should defective (30) degree.

7, artificial femur structure according to claim 6 is characterized in that wherein said pedestal (10) extends the platform part (14) be provided with should defective (30) degree.