CN104720884A

CN104720884A - Support used for femoral head necrosis treatment

Info

Publication number: CN104720884A
Application number: CN201510116633.3A
Authority: CN
Inventors: 刘德俊
Original assignee: Suzhou Ruihua Hospital Co Ltd
Current assignee: Suzhou Ruihua Hospital Co Ltd
Priority date: 2015-03-17
Filing date: 2015-03-17
Publication date: 2015-06-24

Abstract

The invention discloses a support used for femoral head necrosis treatment. The support used for femoral head necrosis treatment is made of titanium-nickel alloy and comprises a head, a body and a tail. The head is a bent hemispheroid, the body is cylindrical, an external thread is arranged on the outer side face of the tail, and a cross groove is designed in the end face of the tail. The head, the body and the tail are connected into a whole. After necrotic bone tissue in a femoral head medullary cavity is removed in an operation, the support is placed in the femoral head medullary cavity. The support used for femoral head necrosis treatment can achieve and reinforce effective supporting of the collapsing femoral head, delay or prevent further collapse and necrosis of the femoral head, delay or avoid artificial joint replacement, relieve pain of a patient, reduce economical burden and improve the living quality of the patient.

Description

A kind of eyelid retractor being used for the treatment of femur head necrosis

Technical field

The present invention relates to a kind of eyelid retractor being used for the treatment of femur head necrosis of hospital orthopedics.

Background technology

In existing clinical case, common relates to femur head necrosis mainly ischemic necrosis of femoral head (avascular necrosis of the femoral head, ANFH) destroy capital blood due to Different types of etiopathogenises to supply, make a pathological process in femoral head caused by osteonecrosis, in femoral head after osteonecrosis, body carries out nature reparation to necrotic area, necrotic bone girder is progressively absorbed, femoral head mechanical strength declines, cause collapse-deformation, cause the major injury of hip joint, support performance declines, under loading conditions, subchondral bone can be caused to bear ABNORMAL STRESS, cause articular step-off, there is Hip osteoarthritis, have a strong impact on hip joint function, affect patients ' life quality.

Three models is had at present: early treatment to the treatment of femur head necrosis, namely the treatment taked for the cause of disease, namely by bring vexation on oneself because of, remove the cause of disease, this method is the most thorough, ideal, but in the cause of disease of femur head necrosis, clear and definite or much indefinite, among current many causes of disease are still in and probe into, etiotropic treatment is not more known where to begin; Intermediate period treatment, namely to Symptomatic patient, takes certain method, from intervention, prevents or delay to subside, postpone or avoid carrying out prosthetic replacement, and this is the emphasis place of research at present; Later stage rescue therapy, also must not be the Therapeutic Method then taked, and after namely femur head necrosis is subsided, occurs Hip osteoarthritis, the hip arthralgia, moving obstacle, have impact on patients ' life quality, can only pass through joint replacement.Hip replacement wound is large, spends high.

The prior art the most close with the present invention is: early stage what subside, the elasticity of cartilage is fair, subchondral bone matter is not subsided, now remove sequestrum by operation, through decompression duct, insert eyelid retractor and support subchondral bone matter, improve capital resist collapse ability, preventer subsides, and by implanting autologous spongiosa bone, restarts the reparation potential of stock head internal skeleton.The device adopted and technology have patent No. ZL200810111686.6 and the patent No. to be the patent of invention of ZL2010202833869, wherein ZL200810111686.6 discloses a kind of eyelid retractor for femur head necrosis, its surface design is loose spongy, aperture is 100-800 micron, and axial portions is solid; It is a kind of for eyelid retractor netted in femur head necrosis that the patent No. is that the patent of invention of ZL2010202833869 discloses, its be made up of ti-ni shape memory alloy, have cancellated hollow out component, the profile of this component is consistent with femoral head intramedullary cavity, by changing temperature, can make it deformation occurs, be convenient to implant, after implantation, can be filled by its hollow cavity bone grafting, make interior netted eyelid retractor and New bone formation one, realize and strengthen capital effective support of subsiding, prevent or delay collapse of the femoral head necrosis.

Weak point is: the patent of invention of patent No. ZL200810111686.6, and this eyelid retractor aperture is less, and the bone trabecula of growing into is comparatively very thin, bears the limited use of pressure, and axial portions is solid, morely occupies space in limited marrow; Support function is not good enough, very limited to the effect preventing or delay femur head necrosis to subside, and uses less in recent years; The patent No. is the patent of invention of ZL2010202833869, required for this eyelid retractor, volume is little, is difficult to the establishment of memory alloy wire material, works out with thin memory alloy wire material, its support performance is limited, the experiment proved that the scheme of the interior netted eyelid retractor of employing memory alloy wire material is infeasible.

Summary of the invention

The technical problem that the present invention mainly solves is to provide a kind of eyelid retractor being used for the treatment of femur head necrosis, it is made to improve the capital effective support strength that subsides, and Postoperative Bone organization healing is accelerated, delay or prevent femoral head from continuing to subside and necrosis, delay or avoid carrying out prosthetic replacement, reduce patient suffering, reduce the financial burden, improve patients ' life quality.

For solving the problems of the technologies described above, the technical problem that the present invention mainly solves is to provide a kind of eyelid retractor being used for the treatment of femur head necrosis, its material is Ti-Ni alloy, comprise: head, body and afterbody three part, and head, body and afterbody are connected as a single entity, head becomes obtuse angle with body axis angle.

Preferably, described head is a curved hemisphere.

Preferably, described body is cylindrical shape.

Preferably, there is external screw thread in described lateral tail face, and described tail end face is designed with cross recess, is convenient to operation when installing.

Preferably, after described device implanted femur incidence, head hemisphere is upwards put, and can realize and strengthen the capital effective support to subsiding.

The invention has the beneficial effects as follows: Postoperative Bone organization healing is fast, increases supporting surface, improves support strength, delay or prevent femoral head from continuing to subside and necrosis, delay or avoid carrying out prosthetic replacement, reducing patient suffering, reduce the financial burden, improve patients ' life quality.

Accompanying drawing explanation

Fig. 1 is the structural representation being used for the treatment of the eyelid retractor of femur head necrosis of the present invention;

Fig. 2 is the main sectional structure schematic diagram being used for the treatment of the eyelid retractor of femur head necrosis of the present invention

Fig. 3 be of the present invention be used for the treatment of the eyelid retractor of femur head necrosis look up direction schematic cross-section

Fig. 4 is the eyelid retractor example structure schematic diagram being used for the treatment of femur head necrosis of the present invention;

Wherein, 1, head; 2, body; 3, afterbody; 4, cross recess; 5, external screw thread; 6, device; 7, femoral head and neck.

Detailed description of the invention

Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.

Embodiments of the invention as Figure 1-4, be used for the treatment of an eyelid retractor for femur head necrosis, its material is Ti-Ni alloy, comprising: head 1, body 2 and afterbody 3 three part, and head 1, body 2 and afterbody 3 are connected as a single entity, head 1 becomes obtuse angle with body 2 axis angle; Described head 1 is a curved hemisphere; Described body 2 is cylindrical shape; Described afterbody 3 lateral surface has external screw thread 5, and described afterbody 3 end face is designed with cross recess 4; After described device 6 implanted femur incidence 7, head 1 hemisphere is upwards put, and can realize and strengthen the capital effective support to subsiding.

The work process being used for the treatment of the eyelid retractor of femur head necrosis of the present invention is as follows:

In figures 1-4, after the osseous tissue of femoral head pulp cavity necrosis being removed during operation, by described device 6 in entering in femoral head and neck 7 pulp cavity, and head 1 hemisphere is upwards put.

A kind of eyelid retractor being used for the treatment of femur head necrosis of the present invention, realize and strengthen capital effective support of subsiding, delay or prevent femoral head from continuing to subside and necrosis, delay or avoid carrying out prosthetic replacement, reduce patient suffering, reduce the financial burden, improve patients ' life quality.A kind of new method and new equipment is provided for treating femur head necrosis and subsiding.

The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.

Claims

1. one kind is used for the treatment of the eyelid retractor of femur head necrosis, its material is Ti-Ni alloy, comprise: head (1), body (2) and afterbody (3) three part, and head (1), body (2) and afterbody (3) are connected as a single entity, it is characterized in that head (1) becomes obtuse angle with body (2) axis angle.

2. the eyelid retractor being used for the treatment of femur head necrosis according to claim 1, is characterized in that: described head (1) is a curved hemisphere.

3. the eyelid retractor being used for the treatment of femur head necrosis according to claim 1, is characterized in that: described body (2) is cylindrical shape.

4. the eyelid retractor being used for the treatment of femur head necrosis according to claim 1, is characterized in that: described afterbody (3) lateral surface has external screw thread (5), and described afterbody (3) end face is designed with cross recess (4), operation when being convenient to install.

5. the eyelid retractor being used for the treatment of femur head necrosis according to claim 1, is characterized in that: after described device (6) implanted femur incidence (7), and head (1) hemisphere is upwards put, and can realize and strengthen the capital effective support to subsiding.