CN204169956U - Tool height dissects the neck of femur retaining device of laminating degree - Google Patents
Tool height dissects the neck of femur retaining device of laminating degree Download PDFInfo
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- CN204169956U CN204169956U CN201420261435.7U CN201420261435U CN204169956U CN 204169956 U CN204169956 U CN 204169956U CN 201420261435 U CN201420261435 U CN 201420261435U CN 204169956 U CN204169956 U CN 204169956U
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Abstract
A kind of tool height is provided to dissect the neck of femur retaining device of laminating degree, in order to replace the animal hip joint of a degeneration or necrosis.Neck of femur retaining device of the present utility model, be fixedly arranged on a termination of an animal skeleton, it includes a housing, and housing has a mesh-like structure inner surface, is able to attached to it for the skeletal tissue newly grown out.Housing is formed with the first perforation, the second perforation and the 3rd perforation.This utility model separately includes nail in skeleton, skeleton is followed closely outward, the first screw and the second screw.In skeleton, nail comprises a threaded interior hole and is implanted in animal skeleton in advance, and the outer nail of skeleton then passes through the 3rd and bores a hole and be locked in this endoporus, reaches the object of stationary housing.First screw and the second screw are pass through the first perforation and second bore a hole and be locked in animal skeleton, to strengthen the effect locked.
Description
Technical field
This utility model has about a kind of neck of femur retaining device, and relates to the neck of femur retaining device that a kind of tool height possessing the two-part skeleton nail that can improve locking effect dissects laminating degree especially.
Background technology
Generally speaking, human hip is positioned at the junction of Thigh bone and pelvis, is the junction of femoral head and acetabular bone.The structure of hip joint imbeds a spill nest as a ball, by means of the structure that this is special, makes it have inborn stability, and without the need to special supportive ligament.In general activity, human body need with hip joint be the strong point to balance body weight, therefore hip joint will bear pressure much more several-fold than body weight.Such as general human body is when normally walking, and the weight that hip joint is born just is the body weight of 2.5 to 3 times.
If but human body has the hip joint diseases such as congenital hip dysplasia, degenerative coxitis, rheumatoid coxitis, traumatic coxitis, ischemic necrosis of femoral head or fracture of femoral neck, it will cause the bad or joint deformity of pain, joint motion, and when general conservative treatment is invalid, then artificial hip replacement surgery can be used to treat.
The artificial hip joint that prior art artificial hip joint replacing operation employing one acetabular cup and a distal femoral component form.Acetabular cup is placed on acetabular bone (hip socket), and the cartilage that wherein acetabular bone is original and bone can be removed by operation.Acetabular cup is usually made by polyethylene or metal, and there is a porous coating outside, for the formation of a suitable friction environment, and allows skeleton be grown up attachment on it to obtain extra fixed effect simultaneously.Distal femoral component is the additional femur bulb of a femoral stem, is placed on femur (Thigh bone).The femoral head that wherein femur is original and neck of femur can pass through excision, and in femur, the bone marrow of a part can be hollowed out to be formed the groove that can accept femoral stem simultaneously.Prior art femoral stem is made up of multiple materials such as titanium, cobalt chromium or rustless steels.Femoral stem can insert bone cement when inserting femur simultaneously, and relies on bone cement cementing with resected femur handle in femur.
But prior art artificial hip joint has some shortcomings, often can cause some complication, one of them is for bone dissolves (Osteolysis).Bone dissolves normally relevant with bone cement fragment and other wear debris, because health attempts to clear up these wear particles and triggering immune reaction, causes the osseous tissue of living to be absorbed.Bone dissolves and bone implant may be caused to loosen or fracture.In addition, put femoral stem due to prior art and need empty medullary cavity, make operating time length and patient wound is large, patient also likely produces allergy to the bone cement inserted when putting femoral stem simultaneously, separately because bone cement has good mobility at high operating temperatures, insert medullary cavity for convenience of bone cement, often bone cement is inserted with the condition of high temperature, cause much cell tissue downright bad inserting in process of bone cement, cause the danger of overall operation large and the postoperative rehabilitation time long.Femoral stem also can cause the stress distribution of femur to change, generation stress covers and causes the bone of proximal femur neck to fracture, often cannot be effectively coated by femoral stem with the stylish cell tissue that grows and callus, cause femoral stem cannot completely and femur be combined into one, cause loosening, needing performs the operation again overhauls thus causes serious medical care problem.
For improving above-mentioned prior art shortcoming, develop a kind of artificial hip joint of stockless at present.Prior art non-stem hip prothesis adopts a kind of neck of femur retaining device, and this neck of femur retaining device is cover unification hollow cylinder on neck of femur, to protect neck of femur.The screw rod that neck of femur retaining device relies on body centre to wear and crosses, is fixed on neck of femur.This structure will no longer need to arrange femoral stem, thus in order to avoid empty medullary cavity, the generation that stress covers can be avoided, remove the use of bone cement from, reduce the generation that bone dissolves, and then reduce the loosening of artificial hip joint, the danger of overall operation and postoperative time of rebuilding.But still can excise neck of femur peripheral cells due to its profile, neck of femur blood supply is caused not easily to degenerate, strengthen fixing retaining element due to its fixing screw rod and surrounding to be parallel to each other simultaneously, it is caused cannot all to possess good crystallized ability in all directions, in older and patients with osteoporosis, its screw rod has loosening situation and occurs, and its profile is normalized cylindrical, increase the probability that screw rod occurs to loosen especially, and then cause the use of prior art artificial hip joint not desirable to the greatest extent.
In view of this, be badly in need of a kind of device being applied in artificial hip joint of exploitation at present, can further reduce loosening generation, better treatment can be had to allow the patient of hip joint disease.
Utility model content
For solving the problem, an object of the present utility model is to provide a kind of neck of femur retaining device, one to degenerate, the human hip of pathological changes or necrosis in order to replace.This utility model neck of femur retaining device is fixedly arranged on a termination of an animal skeleton, in order to protect neck of femur and to connect a femur bulb.
There is provided a kind of tool height dissect laminating degree neck of femur retaining device, be fixedly arranged on a termination of an animal skeleton, it is characterized in that, this neck of femur retaining device includes: a housing, this housing has an inner surface, this housing is formed with one first perforation, one second perforation and one the 3rd perforation, the 3rd perforation has helicitic texture; Nail in one skeleton, it comprises the threaded endoporus of a tool; One skeleton is followed closely outward; One first screw; And one second screw; Wherein, this inner surface of this housing contacts with this termination of this animal skeleton, this first screw passes through this first perforation mutually to lock with this animal skeleton, this second screw passes through this second perforation mutually to lock with this animal skeleton, and this skeleton is followed closely outward and passed through and be locked in the 3rd perforation mutually to lock with this endoporus of following closely in this skeleton implanted in advance in this animal skeleton.
According to above-mentioned design, this housing is formed in one.
According to above-mentioned design, in this skeleton, the diameter of nail is greater than the diameter of the 3rd perforation, and the diameter that this skeleton is followed closely outward is less than or equal to the diameter of the 3rd perforation.
According to above-mentioned design, in this skeleton, nail and this skeleton are followed closely outward and are formed in one.
According to above-mentioned design, when this first screw and this second screw locking are in this housing, the minimum range of the head of screw of this first screw and this second screw is less than the minimum range of the screw-tipped of this first screw and this second screw.
According to above-mentioned design, this housing is a cap-like structure, and its side is connected by a chamfering with top.
This utility model neck of femur retaining device includes a housing, and this housing has an inner surface, in order to contact the termination of above-mentioned animal skeleton.Housing is formed with one first perforation, one second perforation and one the 3rd perforation.In one embodiment, housing is a cap-like structure, and the edge of its side and top has a chamfering, and side has an outward extending side skirt structure.
This utility model neck of femur retaining device separately comprises nail in a skeleton, a skeleton is followed closely outward, one first screw and one second screw, in order to stationary housing.In skeleton, nail comprises the threaded endoporus of a tool and is implanted in advance in this animal skeleton, and skeleton is followed closely outward, boring a hole and being locked in this endoporus, reaching the object of fixing this housing by means of passing through the 3rd.First screw by means of passing through the first perforation to be locked in animal skeleton, the second screw then by means of passing through the second perforation to be locked in animal skeleton, with strengthen lock effect.Need it is specifically intended that, in skeleton, the diameter of nail is greater than the diameter of the 3rd perforation, and the diameter that skeleton is followed closely outward is less than or equal to the diameter of the 3rd perforation, this utility model relies on the two-part structure that in this skeleton, nail and skeleton are followed closely that the diameter followed closely in the skeleton of locking in skeleton can be made to increase outward, and then increases its stability.
In the prior art, its skeleton nail mainly fixed is strengthened fixing retaining element with surrounding and is parallel to each other, and causes it cannot all possess good crystallized ability in all directions.And the first screw of the present utility model and the second screw locking in animal skeleton time and skeleton in follow closely and skeleton is followed closely outward and not parallel, even the locking direction of the first screw and the second screw is also not parallel to each other.Rely on the above-mentioned structure of formation to make neck of femur retaining device of the present utility model to resist multidirectional carrying, and be unlikely to get loose.But be not parallel to each other it is noted that the locking direction of the first screw of the present utility model and the second screw does not limit, the first screw and the situation of the parallel locking of the second screw are also a wherein embodiment of the present utility model.
Moreover, the inner surface of housing has a mesh-like structure further, this mesh-like structure can allow the inner surface of housing and animal skeleton retain suitable space, in order to subsequent growth, skeletal tissue is out attached on housing, and then housing and animal skeleton are combined into one, reduce the generation loosened.
In addition, the first perforation on housing, the second perforation and the 3rd inner edge of boring a hole all can have screw thread.Therefore, the first screw and the second screw also can be bored a hole with first and second be bored a hole and mutually lock except being locked in skeleton, and similarly, skeleton to be followed closely outward except being locked in the endoporus followed closely in skeleton and also can be bored a hole and mutually lock with the 3rd.Thus, the stability of neck of femur retaining device of the present utility model can be promoted further again.In one embodiment, housing has multiple convex tubular construction, the first perforation and the second perforation are formed in these convex tubular constructions, and the first screw and the second screw locking can be made more firm when the first perforation and the second perforation.
In practical application, the termination of femur (Thigh bone) is provided with a neck of femur retaining device as above, the housing that femur bulb is then connected to neck of femur retaining device is interconnected with the acetabular cup of hipbone, forms artificial hip joint.
Except described in front; the housing of protector of the present utility model must have an inner surface; this housing is formed with one first perforation and one the 3rd perforation, and the bearing of trend of this first perforation and the 3rd bearing of trend of boring a hole intersect in this animal skeleton, to provide more firm fixing.
Simultaneously, protector obtains and includes one first screw and the 3rd screw further, the diameter of the 3rd screw is greater than the diameter of this first screw, when applying, this first screw and the 3rd screw pass through this first perforation and the 3rd perforation respectively, simultaneously, this first screw and the 3rd screw wear mutually relative to the other end of this first perforation and the 3rd perforation, and the first screw or the 3rd screw obtain relative to the other end of the first perforation and the 3rd perforation and are alternatively formed with a lockhole, must be arranged in wherein for another one, think the effect of further locking.
In addition, neck of femur retaining device of the present utility model also must have another extending design, and this neck of femur retaining device includes a housing, one first screw, one the 3rd screw and a connection piece.Housing has an inner surface, this housing is formed with one first perforation and one the 3rd perforation, and the 3rd perforation has helicitic texture; Connector has one first link slot and one second link slot; Wherein, when applying, this connector is embedded among this animal skeleton in advance and this inner surface of this housing contacts with this termination of this animal skeleton, this first screw passes through this first perforation mutually to lock with this animal skeleton, this second screw passes through this second perforation mutually to lock with this animal skeleton, meanwhile, this first screw wears this first link slot and the 3rd screw wears in this second link slot the effect thinking mutually locking.
In sum, the beneficial effects of the utility model are, neck of femur retaining device of the present utility model relies on the two-part structure that in skeleton, nail and skeleton are followed closely outward, adds the diameter of nail in skeleton and then improves the stability of locking, forms a stable lock solid structure.And follow closely in the first screw, the second screw and skeleton, locking direction that skeleton is followed closely outward is not parallel crooked even mutually, make neck of femur retaining device of the present utility model can resist multidirectional carrying, and then minimizing neck of femur retaining device is loosening.In addition, the inner surface of housing has a mesh-like structure, is combined into one in order to neck of femur retaining device and animal skeleton, reduces loosening probability more further.Comprehensive, it is not good that the neck of femur retaining device that this utility model provides improves crystallized ability in prior art really, and then the problem causing the use of artificial hip joint not desirable to the greatest extent.
Following utility model can be relied on to describe in detail about advantage of the present utility model and spirit and institute's accompanying drawings is further understood.
Accompanying drawing explanation
Fig. 1 illustrates schematic perspective view when being applied to an animal skeleton according to the neck of femur retaining device of a specific embodiment of the present utility model.
Fig. 2 A illustrates the side isometric view of closing according to neck of femur retaining device and the femoral ball head group of a specific embodiment of the present utility model.
Fig. 2 B illustrates the upper parallax stereogram closed according to neck of femur retaining device and the femoral ball head group of a specific embodiment of the present utility model.
Fig. 2 C illustrates the lower parallax stereogram closed according to neck of femur retaining device and the femoral ball head group of a specific embodiment of the present utility model.
Fig. 3 A illustrates the side isometric view of the neck of femur retaining device according to a specific embodiment of the present utility model.
Fig. 3 B illustrates the lower parallax stereogram of the neck of femur retaining device according to a specific embodiment of the present utility model.
Fig. 4 illustrates nail and skeleton in the skeleton according to a specific embodiment of the present utility model and follows closely the axonometric chart of combination outward.
Fig. 5 illustrates the partial cutaway schematic view of the neck of femur retaining device according to a specific embodiment of the present utility model.
Fig. 6 illustrates schematic diagram when being applied to an animal skeleton according to the neck of femur retaining device of another specific embodiment of the present utility model when side is cutd open.
Fig. 7 illustrates schematic diagram when being applied to an animal skeleton according to the neck of femur retaining device of another specific embodiment of the present utility model when side is cutd open.
Wherein, description of reference numerals is as follows:
1: neck of femur retaining device 2: animal skeleton
10: housing 11: the first is bored a hole
12: the second perforation 13: the three perforation
14: mesh-like structure 15: convex tubular construction
16: chamfering 17: side skirt structure
18: top 19: side
20: nail 21 in skeleton: endoporus
30: skeleton follows closely 40: the first screws outward
50: the second screws 60: femur bulb
70: fixed block 80: connector
82: the first link slot 84: the second link slots
90: the three screws 92: lockhole
D1: the first distance D2: second distance
Detailed description of the invention
See also Fig. 1, Fig. 2 A, Fig. 2 B and Fig. 2 C.Fig. 1 illustrates schematic perspective view when being applied to an animal skeleton according to the neck of femur retaining device of a specific embodiment of the present utility model.Fig. 2 A illustrates the side isometric view of closing according to neck of femur retaining device and the femoral ball head group of a specific embodiment of the present utility model.Fig. 2 B illustrates the upper parallax stereogram closed according to neck of femur retaining device and the femoral ball head group of a specific embodiment of the present utility model.Fig. 2 C illustrates the lower parallax stereogram closed according to neck of femur retaining device and the femoral ball head group of a specific embodiment of the present utility model.This utility model provides a kind of neck of femur retaining device 1, is fixedly arranged on a termination of an animal skeleton 2, in order to protect a neck of femur and to connect a femur bulb 60.This utility model neck of femur retaining device 1 includes a housing 10, and this housing 10 has an inner surface, in order to contact the termination of animal skeleton 2.Housing 10 is formed with one first perforation 11,1 second perforation 12 and the 3rd perforation 13.First perforation 11 is pass with for one first screw 40, and the second perforation 12 is pass with for one second screw 50, and the 3rd perforation 13 is pass with following closely 30 (see Fig. 4) outward for a skeleton, is fixedly arranged on the termination of animal skeleton 2 in order to housing 10.Wherein, housing 10 is formed in one (One piece formed), and in one embodiment, housing 10 is a cap-like structure, its side 19 and top 18 relies on a chamfering 16 to be connected, and side 19 has one stretches out and the side skirt structure 17 caved in the direction of top 18.And nail 20 comprises the threaded endoporus 21 (see Fig. 5) of a tool and is implanted in advance in this animal skeleton 2 in skeleton.
In actual applications, skeleton follows closely 30 outward by means of passing through the 3rd perforation 13 and being locked in this by the endoporus 21 of nail 20 in the skeleton implanted in advance in animal skeleton 2, to reach the object of fixing this housing 10.First screw 40 by means of passing through the first perforation 11 to be locked in animal skeleton 2, the second 50, screw by means of passing through the second perforation 12 to be locked in animal skeleton 2, with strengthen lock effect.Femur bulb 60 is fixed on housing 10, and in one embodiment, femur bulb 60 is the outside of the 3rd perforation 13 be fixed on housing 10.It is noted that this utility model does not limit the mode that femur bulb 60 is fixed in housing 10, fix again threadably or be all contained in embodiment of the present utility model so that the mode of engaging is fixing.
Neck of femur retaining device 1 of the present utility model is when practical application, the termination of femur (Thigh bone) is provided with a neck of femur retaining device 1 as in the previous paragraph, the housing 10 that femur bulb 60 is then connected to neck of femur retaining device 1 is interconnected with the acetabular cup of hipbone, forms artificial hip joint.
In this specific embodiment, inner surface has a mesh-like structure 14 (see Fig. 5), this mesh-like structure 14 can allow housing 10 and animal skeleton 2 retain suitable space, subsequent growth skeletal tissue is out allowed to be able to attached to it, and skeletal tissue attached to it can fill completely whole inner surface gradually, and then housing 10 and animal skeleton 2 are combined into one, the probability making neck of femur retaining device 1 of the present utility model occur to loosen reduces.
In addition, mesh-like structure 14 is not limited to be arranged at inner surface, but whole housing 10 also can be made up of mesh-like structure completely, is combined into one in order to housing 10 and animal skeleton 2, and then reduces the generation loosened.But, concentrate because stress more easily occurs for the first perforation 11, second perforation 12 and the 3rd perforation 13, housing 10 can be formed with non-mesh-like structure in the adjacent domain of the first perforation 11, second perforation 12 and the 3rd perforation 13, and all the other regions are formed with mesh-like structure, so when being beneficial to housing 10 and being combined into one with animal skeleton 2, can still possess enough intensity.
In the prior art, its skeleton nail mainly fixed is strengthened fixing retaining element with surrounding and is parallel to each other, and causes it cannot all possess good crystallized ability in all directions.See also Fig. 3 A and Fig. 3 B.Fig. 3 A illustrates the side isometric view of the neck of femur retaining device according to a specific embodiment of the present utility model.Fig. 3 B illustrates the lower parallax stereogram of the neck of femur retaining device according to a specific embodiment of the present utility model.But can be found out by the side view of Fig. 3 A, follow closely when first screw 40 of the present utility model and the second screw 50 are locked in animal skeleton and in skeleton 20 and skeleton follow closely the locking direction of 30 (see Fig. 4) outward and not parallel, even the locking direction of the first screw 40 and the second screw 50 is also not parallel to each other, therefore neck of femur retaining device 1 of the present utility model can resist multidirectional carrying.In addition, can be found out by Fig. 3 B, when first screw 40 and the second screw 50 are locked in housing, the head of screw minimum range to each other (the first distance D1) of the first screw 40 and the second screw 50 is less than screw-tipped minimum range to each other (second distance D2), by geometry representing the locking direction of i.e. the first screw 40 and the second screw 50 is crooked mutually.But should be noted, the locking direction of the first screw 40 of the present utility model and the second screw 50 does not limit and to be not parallel to each other or crooked each other, first screw 40 and the situation of the parallel locking of the second screw 50 are also a wherein embodiment of the present utility model, and this utility model does not add restriction to this.
Refer to Fig. 4 and Fig. 5, Fig. 4 illustrates nail and skeleton in the skeleton according to a specific embodiment of the present utility model and follows closely the axonometric chart of combination outward, and Fig. 5 illustrates the partial cutaway schematic view of the neck of femur retaining device according to a specific embodiment of the present utility model.The diameter of nail 20 is greater than the diameter of the 3rd perforation 13 in skeleton, and the diameter that skeleton follows closely 30 is outward less than or equal to the diameter of the 3rd perforation 13, and skeleton is followed closely 30 outward and combined by being locked in skeleton the endoporus 21 following closely 20.The advantage of this two-part structure is, the enlarged diameter of nail 20 in the skeleton bearing maximum locking responsibility, can increase the stability of locking with this, and skeleton is followed closely 30 outward and is then used for connecting in housing 10 and skeleton and follows closely 20.In practical application, nail 20 to be implanted in advance in animal skeleton 2 and to be comprised an endoporus 21 in skeleton, endoporus 21 has and corresponds to the screw thread that skeleton follows closely 30 outward, and skeleton is followed closely 30 outward and passed through the 3rd perforation 13 and be locked in this endoporus 21, reaches the object of stationary housing 10.
In addition, in a specific embodiment, the first perforation 11 has a screw thread corresponding with the first screw 40, and the second perforation 12 has a screw thread corresponding with the second screw 50, and the 3rd perforation 13 has one and follows closely 30 corresponding screw threads outward with skeleton.
Therefore, be also locked on housing 10 when the first screw 40 and the second screw 50 are locked in animal skeleton 2, skeleton is followed closely 30 outward when being locked in the endoporus 21 of nail 20 in skeleton and is also locked on housing 10 simultaneously, and then reduces the generation loosened simultaneously.The method effectively can improve the stability of neck of femur retaining device 1 of the present utility model.In one embodiment, housing 10 has multiple convex tubular construction 15, first perforation 11 and the second perforation 12 is formed in these convex tubular constructions 15, more firm when the first screw 40 and the second screw 50 can be made to be locked in the first perforation 11 and the second perforation 12.
Moreover refer to Fig. 6, it paints the schematic diagram when neck of femur retaining device having stated another specific embodiment of the present utility model is applied to an animal skeleton when side is cutd open.In this example, roughly contained with foregoing embodiments person is identical in its design, therefore is not repeated.And more different person is that the first screw 40 of the present utility model and the 3rd screw 90 intersect in the skeleton of animal, also, the 3rd perforation 13 of housing 10 and the bearing of trend of the first perforation 11 intersect in this animal skeleton.And in this example, aforesaid 3rd screw 90 refers to that in skeleton, nail 20 and skeleton follow closely the combination of 30 outward, and in this example, the 3rd screw 90 is formed in one (one piece formed).In addition, in this example, the diameter of the 3rd screw 90 is greater than the diameter of this first screw 40, and the first screw 40 and the 3rd screw 90 pass through this first perforation 11 and the 3rd perforation 13 respectively, meanwhile, the first screw 40 and the 3rd screw 90 wear mutually relative to the other end of the first perforation 11 and the 3rd perforation 13.Moreover state as depicted in the figures, the 3rd screw 90 has a lockhole 92 relative to the other end of the 3rd perforation 13, lockhole 92 is suitable for being arranged in wherein to limit relative position both it for the first screw 40.Just this utility model is not as limit, and when needs, lockhole 92 also must be formed at the other end place of the first screw 40 relative to this first perforation 11, is suitable for being arranged in wherein to limit relative position both it for the 3rd screw 90 in now lockhole 92.So, housing 10, first screw 40 and the 3rd screw 90 also can form firm three-legged structure, make neck of femur surface replacement type device 1 of the present utility model to resist multidirectional carrying, are effectively fixedly arranged on the termination of animal skeleton and are unlikely to get loose.
On the other hand, the 3rd perforation 13 is followed closely 30 places outward relative to skeleton and must be provided with a fixed block 70, and the screw thread that fixed block 70 is fixed on the 3rd perforation 13 is established its 3rd perforation 13 with lid and avoids the 3rd screw 90 to get loose in the 3rd perforation 13.As previously mentioned, in this example, it is optionally a smooth surface that 3rd screw 90 obtains in the side surface relative to the 3rd perforation 13, and only rely on fixed block 70 to be fixed it, just it is not also as limit, when needs, the 3rd screw 90 also must be provided with corresponding screw thread relative to the 3rd perforation 13 places.
Hold the design of Fig. 6, this utility model has also proposed another Variant Design and has not stated person as depicted in fig. 7.The design of Fig. 7 is similar to the design of Fig. 6, and just it is when applying, and implanting in advance in an intramedullary canal of animal skeleton has a connection piece 80, and connector 80 includes threaded first link slot 82 of a tool and threaded second link slot 84 of a tool.First screw 40, passing through the first perforation 11 with while being locked in this animal skeleton 2, also passes through the first link slot 82 to be locked on connector 80.3rd screw 30, passing through the 3rd perforation 13 to be locked in this animal skeleton while 2, also passes through the second link slot 84 to be locked on connector 80.So, housing 10, first screw 40, the 3rd screw 30 and connector 80 can form a kind of firm lock solid structure, make neck of femur surface replacement type device 1 of the present utility model to resist multidirectional carrying, be effectively fixedly arranged on the termination of animal skeleton and be unlikely to get loose.It is worth mentioning that, in this specific embodiment, first perforation 11 bearing of trend and the 3rd bore a hole 13 bearing of trend not with intersect in this animal skeleton be necessity.
In sum, neck of femur retaining device of the present utility model relies on the two-part structure that in skeleton, nail and skeleton are followed closely outward, adds the diameter of nail in skeleton and then improves the stability of locking, forms a stable lock solid structure.And follow closely in the first screw, the second screw and skeleton, locking direction that skeleton is followed closely outward is not parallel crooked even mutually, makes neck of femur retaining device of the present utility model can resist multidirectional carrying, and then the probability that reduction neck of femur retaining device is loosening.In addition, the inner surface of housing has a mesh-like structure, is combined into one in order to neck of femur retaining device and animal skeleton, reduces loosening probability more further.Comprehensive, it is not good that the neck of femur retaining device that this utility model provides improves crystallized ability in prior art really, and then the problem causing the use of artificial hip joint not desirable to the greatest extent.
By means of the above detailed description of preferred embodiments, it is desirable to clearly to describe feature of the present utility model and spirit, and not with above-mentioned disclosed preferred embodiment, category of the present utility model is limited.On the contrary, its objective is wish to contain various change and tool equality be arranged in this utility model institute in the category of the scope of the claims applied for.Therefore, the category of the scope of the claims that this utility model is applied for should do the broadest explanation, with the arrangement causing it to contain all possible change and tool equality according to above-mentioned explanation.
Claims (19)
1. tool height dissects a neck of femur retaining device for laminating degree, and be fixedly arranged on a termination of an animal skeleton, it is characterized in that, this neck of femur retaining device includes:
One housing, this housing has an inner surface, and this housing is formed with one first perforation, one second perforation and one the 3rd perforation, the 3rd perforation has helicitic texture;
Nail in one skeleton, it comprises the threaded endoporus of a tool;
One skeleton is followed closely outward;
One first screw; And
One second screw;
Wherein, this inner surface of this housing contacts with this termination of this animal skeleton, this first screw passes through this first perforation mutually to lock with this animal skeleton, this second screw passes through this second perforation mutually to lock with this animal skeleton, and this skeleton is followed closely outward and passed through and be locked in the 3rd perforation mutually to lock with this endoporus of following closely in this skeleton implanted in advance in this animal skeleton.
2. neck of femur retaining device as claimed in claim 1, it is characterized in that, this housing is formed in one.
3. neck of femur retaining device as claimed in claim 1, it is characterized in that, this inner surface of this housing has a mesh-like structure.
4. neck of femur retaining device as claimed in claim 1, is characterized in that, in this skeleton, the diameter of nail is greater than the diameter of the 3rd perforation, and the diameter that this skeleton is followed closely outward is less than or equal to the diameter of the 3rd perforation.
5. neck of femur retaining device as claimed in claim 1, is characterized in that, this first perforation second is bored a hole with this and all had screw thread.
6. neck of femur retaining device as claimed in claim 1, is characterized in that, in this skeleton, nail and this skeleton are followed closely outward and be formed in one.
7. neck of femur retaining device as claimed in claim 1, it is characterized in that, when this first screw and this second screw locking are in this housing, the minimum range of the head of screw of this first screw and this second screw is less than the minimum range of the screw-tipped of this first screw and this second screw.
8. neck of femur retaining device as claimed in claim 1, it is characterized in that, this housing is a cap-like structure, and its side is connected by a chamfering with top.
9. tool height dissects a neck of femur retaining device for laminating degree, and be fixedly arranged on a termination of an animal skeleton, it is characterized in that, this neck of femur retaining device includes:
One housing, this housing has an inner surface, this housing is formed with one first perforation and one the 3rd perforation, and the bearing of trend of this first perforation and the 3rd bearing of trend of boring a hole intersect in this animal skeleton;
Wherein, this inner surface of this housing contacts with this termination of this animal skeleton.
10. neck of femur retaining device as claimed in claim 9, is characterized in that, this first perforation and the 3rd is bored a hole and all had screw thread.
11. neck of femur retaining devices as claimed in claim 9, is characterized in that, include one first screw and one the 3rd screw further, the diameter of the 3rd screw is greater than the diameter of this first screw.
12. neck of femur retaining devices as claimed in claim 11, it is characterized in that, when applying, this first screw and the 3rd screw pass through this first perforation and the 3rd perforation respectively, meanwhile, this first screw and the 3rd screw wear mutually relative to the other end of this first perforation and the 3rd perforation.
13. neck of femur retaining devices as claimed in claim 12, is characterized in that, the 3rd screw has a lockhole relative to the other end of the 3rd perforation, and this lockhole is suitable for wearing for this first screw.
14. neck of femur retaining devices as claimed in claim 12, is characterized in that, this first screw has a lockhole relative to the other end of this first perforation, and this lockhole is suitable for wearing for the 3rd screw.
15. neck of femur retaining devices as claimed in claim 9, it is characterized in that, this housing is formed in one.
16. neck of femur retaining devices as claimed in claim 9, it is characterized in that, this inner surface of this housing has a mesh-like structure.
17. neck of femur retaining devices as claimed in claim 11, is characterized in that, the 3rd screw is followed closely one-body molded outward by nail and a skeleton in a skeleton.
18. neck of femur retaining devices as claimed in claim 9, it is characterized in that, this housing is a cap-like structure, and its side is connected by a chamfering with top.
19. 1 kinds of tool height dissect the neck of femur retaining device of laminating degree, and be fixedly arranged on a termination of an animal skeleton, it is characterized in that, this neck of femur retaining device includes:
One housing, this housing has an inner surface, and this housing is formed with one first perforation, one second perforation and one the 3rd perforation, the 3rd perforation has helicitic texture;
One first screw;
One second screw;
One the 3rd screw; And
A connection piece, has one first link slot and one second link slot;
Wherein, this connector is embedded among this animal skeleton in advance and this inner surface of this housing contacts with this termination of this animal skeleton, this first screw passes through this first perforation mutually to lock with this animal skeleton, this second screw passes through this second perforation mutually to lock with this animal skeleton, meanwhile, this first screw wears this first link slot and the 3rd screw wears in this second link slot mutually to lock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420261435.7U CN204169956U (en) | 2014-05-21 | 2014-05-21 | Tool height dissects the neck of femur retaining device of laminating degree |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420261435.7U CN204169956U (en) | 2014-05-21 | 2014-05-21 | Tool height dissects the neck of femur retaining device of laminating degree |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204169956U true CN204169956U (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420261435.7U Expired - Fee Related CN204169956U (en) | 2014-05-21 | 2014-05-21 | Tool height dissects the neck of femur retaining device of laminating degree |
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| Country | Link |
|---|---|
| CN (1) | CN204169956U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113397766A (en) * | 2021-06-17 | 2021-09-17 | 嘉思特华剑医疗器材(天津)有限公司 | Bionic surface hip joint prosthesis with high long-term stability |
| CN113397767A (en) * | 2021-06-17 | 2021-09-17 | 嘉思特华剑医疗器材(天津)有限公司 | Bionic surface hip joint prosthesis convenient to replace |
| CN113456305A (en) * | 2021-06-17 | 2021-10-01 | 嘉思特华剑医疗器材(天津)有限公司 | Bionic surface hip joint prosthesis convenient for operation |
| WO2022077192A1 (en) * | 2020-10-12 | 2022-04-21 | 董谢平 | Artificial hip joint femur-side prosthesis capable of preserving neck of femur |
-
2014
- 2014-05-21 CN CN201420261435.7U patent/CN204169956U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022077192A1 (en) * | 2020-10-12 | 2022-04-21 | 董谢平 | Artificial hip joint femur-side prosthesis capable of preserving neck of femur |
| CN113397766A (en) * | 2021-06-17 | 2021-09-17 | 嘉思特华剑医疗器材(天津)有限公司 | Bionic surface hip joint prosthesis with high long-term stability |
| CN113397767A (en) * | 2021-06-17 | 2021-09-17 | 嘉思特华剑医疗器材(天津)有限公司 | Bionic surface hip joint prosthesis convenient to replace |
| CN113456305A (en) * | 2021-06-17 | 2021-10-01 | 嘉思特华剑医疗器材(天津)有限公司 | Bionic surface hip joint prosthesis convenient for operation |
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