CN205094682U - Memory alloy surrounds artifical hip joint prosthesis of formula - Google Patents
Memory alloy surrounds artifical hip joint prosthesis of formula Download PDFInfo
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- CN205094682U CN205094682U CN201520791429.7U CN201520791429U CN205094682U CN 205094682 U CN205094682 U CN 205094682U CN 201520791429 U CN201520791429 U CN 201520791429U CN 205094682 U CN205094682 U CN 205094682U
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Abstract
The utility model provides a memory alloy surrounds artifical hip joint prosthesis of formula, is including surrouning formula handle body, and the formula handle of surrouning symmetry on one's body sets up manyly to surrouning the arm, surrounds formula handle body lower extreme and surrounds the arm syntropy and set up the fixed hook, and the formula handle of surrouning is held on one's body and is equipped with handle body inclined plane, and handle body inclined plane is located and surrounds arm opening side, sets up solid neck portion on the handle body inclined plane, and slide hook is prevented in the lower extreme setting of handle body inclined plane. The utility model discloses before the false body is implanted, put into the disinfection brine ice with the false body and use and strut pincers and strut and encircle the arm, during the implantation with handle body inclined plane with suffer from the coincidence of bone excision face, then correspond on the thighbone and prevent the position of slide hook and fixed hook and punch, will prevent slide hook and fixed hook and fix in inserting the corresponding hole of beating, then encircle the arm with the gauze hot compress of the salt solution of disinfecting, recover original shape, implantation completion totally up to encircling the arm. The utility model discloses a special memory effect of nickel titanium memory alloy material, the reaction of memory alloy foreign matter is little, reduces postoperative complication to it is safe in the installation, simple, convenient.
Description
Technical field
This utility model belongs to Medical orthopedic implantation instrument technical field, is specifically related to a kind of memorial alloy encircling type artificial hip prosthesis.
Background technology
Ischemic necrosis of femoral head (AVN) is also known as femur head necrosis (ONFH), that blood supply of the femoral head interrupts or impairedly causes the dead and reparation subsequently of osteocyte and marrow components, then causing the disease of femoral head structural change, collapse of the femoral head, joint function disturbance, is the common refractory disease of field of orthopaedics.Artificial hip prosthesis's displacement is a kind of main treatment means of AVN patients with terminal.Past common artificial femur is all insert pulp cavity formula, wherein artificial femur handle is extremely important with coordinating of pulp cavity, and its advantage is: patient can early ambulation, and the hospital stays is also shorter, can the course of disease be shortened, make patient drop in normal life, work soon; Its shortcoming is: pain after the implantation, and reason is that artificial femur head and neck is long, causes that femoral head is relative with acetabular bone gap to narrow, postoperative feels pain when bearing a heavy burden lowerly.Artificial hip prosthesis can repair pulp cavity in implantation process in addition, can cause certain defect, then after inserting pulp cavity, osteoporotic patient can increase the probability of fracture in repair process to cortical bone, especially increases the probability of prosthese fractured near end far away.Simultaneously when artificial hip prosthesis implants, degradation under the implantation of the operation wound caused, foreign body, local resistance, make infected hip arthroplasty probability high, but the diagnosis of infected hip arthroplasty is quite difficult, except clinical realization and iconography, can only by monitoring reactive protein CRP concentration and erythrocyte sedimentation ESR.In the process that traditional artificial thigh bone is transplanted, in femur marrow during operation, a large amount of fat can be caused to drip release, breaking of bone marrow blood sinus, the sharply rising of marrow cavity pressure.In addition, the toxic action in Traditional Man joint replacement during bone cement polymerization, has wound to operate the Systemic stress response etc. excited, finally causes significant quantities of fat droplet to enter blood circulation, forms fat embolism.
Utility model content
Technical problem to be solved in the utility model provides a kind of memorial alloy encircling type artificial hip prosthesis for shortcoming of the prior art.
Following technical scheme is adopted for solving technical problem of the present utility model:
A kind of memorial alloy encircling type artificial hip prosthesis, comprise encircling type handle body, described encircling type handle is symmetrical arranged with it multipairly encircles arm, described encircling type handle body lower end with encircle arm fixation hook be set in the same way, described encircling type handle is held with it and is provided with handle body inclined-plane, described handle body inclined-plane is positioned at and encircles arm open side, and described handle body inclined-plane arranges solid incidence, and lower end, described handle body inclined-plane arranges non-slip hook.
Between described handle body inclined-plane and encircling type handle body, angle is 40 °.
The angle of described solid incidence and encircling type handle body is 130 °.
Described solid incidence adopts screw to be connected with encircling type handle body.
The method for implantation of above-mentioned memorial alloy encircling type artificial hip prosthesis, before implantation memorial alloy encircling type artificial hip prosthesis, what sterilization brine ice prosthese being put into 0-5 DEG C used medical distraction forcep to strut prosthese encircles arm, during implantation, handle body inclined-plane is overlapped with trouble resected bone face, then on femur, punch in the position of corresponding non-slip hook and fixation hook, non-slip hook and fixation hook are inserted be fixed in the corresponding aperture beaten, then arm is encircled with the gauze hot compress of the sterile saline being moistened with 35 DEG C-45 DEG C, return to the original form completely until encircle arm, implantation completes.
Cross sectional moment of inertia is a physical quantity, is often used as description object opposing twisting, the ability of torsion.People is walking, hip joint bears a heavy burden at most in motor process, and hip joint structure can adapt to the immense strength produced by the leverage of bone.In artificial hip prosthesis's design, cross sectional moment of inertia is exactly an important parameter, and compared with traditional artificial femur handle, memorial alloy encircling type artificial hip prosthesis adopts encircling type, relevant with diameter d with diameter D in computational process middle section the moment of inertia.With in conventional femoral handle cross sectional moment of inertia comparing calculation process, the cross sectional moment of inertia of memorial alloy encircling type artificial hip prosthesis is the cross sectional moment of inertia being greater than conventional femoral handle, so the cross sectional moment of inertia proving memorial alloy encircling type artificial hip prosthesis is better than conventional femoral handle.So memorial alloy encircling type artificial hip prosthesis is antitorque dynamic, the energy force rate conventional femoral handle performance of torsion is good many.
This utility model adopts the special memory effect of Ultimum Ti material, memorial alloy encircling type artificial hip prosthesis uses medical distraction forcep to strut and encircles arm at the temperature of 0-5 DEG C, temperature encircles the shape before arm recoverable deformation after raising, adopt memorial alloy foreign body reaction little in addition, this material has good biocompatibility and the elastic modelling quantity similar with cortical bone, thus foreign body reaction is little, the generation of stress can be reduced after the implantation and reduce stress shielding, thus minimizing post-operative complication, reduce postoperative infection greatly, circumferential type structure also has good protection for osteoporotic patient, thus reduce the probability of prosthese fractured near end far away.And this memorial alloy encircling type artificial hip prosthesis is safe in installation process, simple, convenient.Simultaneously in implantation process not at femur marrow transluminal operation, not Cement, so the formation of fat embolism can be reduced after the implantation more.The parts such as the handle body inclined-plane that this utility model adopts, non-slip hook and fixation hook are used to prevent memorial alloy encircling type artificial hip prosthesis from loosening after implant into body and sinking, structure is simple, this utility model easy to use is designed to encircling type, multipair arm of encircling is had to be fixed, fixation, stress distribution is even, and between prosthese and bone, adaptation is high.This utility model handle body inclined-plane and vertical direction (human body is stood) angle are 40 °, and after femoral head and neck of femur cut-out, can fit better in section and inclined-plane; The angle of cervical region and vertical is 130 ° in mind, and femoral head leaning angle meets body mechanics; After femur and neck of femur excise, tangent plane and the laminating of memorial alloy encircling type artificial hip prosthesis face, then on femur, punching insertion fixation hook is fixed, and prevents from.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation;
Fig. 2 is this utility model front view.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail:
As Fig. 1, described in Fig. 2, a kind of memorial alloy encircling type artificial hip prosthesis, comprise encircling type handle body 1, encircling type handle body 1 is symmetrical arranged and multipairly encircles arm 6, encircling type handle body 1 lower end with encircle arm 6 fixation hook 5 be set in the same way, encircling type handle body 1 upper end is provided with handle body inclined-plane 2, between handle body inclined-plane 2 and encircling type handle body 1, angle is 40 °, handle body inclined-plane 2 is positioned at and encircles arm 6 open side, described handle body inclined-plane 2 arranges solid incidence 3, solid incidence 3 adopts screw 7 to be connected with encircling type handle body, solid incidence 3 is 130 ° with the angle of encircling type handle body 1, lower end, handle body inclined-plane 2 arranges non-slip hook 4.
The using method of above-mentioned memorial alloy encircling type artificial hip prosthesis is, before implantation memorial alloy encircling type artificial hip prosthesis, what sterilization brine ice prosthese being put into 0-5 DEG C used medical distraction forcep to strut prosthese encircles arm 6, during implantation, handle body inclined-plane 2 is overlapped with trouble resected bone face, then on femur, punch in the position of corresponding non-slip hook 4 and fixation hook 5, non-slip hook 4 and fixation hook 5 inserted in beaten corresponding aperture and be fixed; Then encircle arm 6 with the gauze hot compress of the sterile saline being moistened with 35 DEG C-45 DEG C, return to the original form completely until encircle arm 6, implantation completes.
This utility model adopts the special memory effect of Ultimum Ti material, and memorial alloy encircling type artificial hip prosthesis uses medical distraction forcep to strut and encircles arm at the temperature of 0-5 DEG C, and temperature encircles the shape before arm recoverable deformation after raising; Adopt memorial alloy foreign body reaction little in addition, reduce stress shielding, thus reduce post-operative complication; And this memorial alloy encircling type artificial hip prosthesis is safe in installation process, simple, convenient.The parts such as the handle body inclined-plane that this utility model adopts, non-slip hook and fixation hook are used to prevent memorial alloy encircling type artificial hip prosthesis from loosening after implant into body and sinking, structure is simple, this utility model easy to use is designed to encircling type, multipair arm of encircling is had to be fixed, fixation, stress distribution is even, and between prosthese and bone, adaptation is high.This utility model handle body inclined-plane and vertical direction (human body is stood) angle are 40 °, and after femoral head and neck of femur cut-out, can fit better in section and inclined-plane; The angle of cervical region and vertical is 130 ° in mind, and femoral head leaning angle meets body mechanics; After femur and neck of femur excise, tangent plane and the laminating of memorial alloy encircling type artificial hip prosthesis face, then on femur, punching insertion fixation hook is fixed, and prevents from.
Claims (4)
1. a memorial alloy encircling type artificial hip prosthesis, it is characterized in that: comprise encircling type handle body (1), described encircling type handle body (1) is symmetrical arranged and multipairly encircles arm (6), described encircling type handle body (1) lower end with encircle arm (6) fixation hook (5) be set in the same way, described encircling type handle body (1) upper end is provided with handle body inclined-plane (2), described handle body inclined-plane (2) is positioned at encircles arm (6) open side, described handle body inclined-plane (2) arranges solid incidence (3), and described handle body inclined-plane (2) lower end arranges non-slip hook (4).
2. a kind of memorial alloy encircling type artificial hip prosthesis according to claim 1, is characterized in that: between described handle body inclined-plane (2) and encircling type handle body (1), angle is 40 °.
3. a kind of memorial alloy encircling type artificial hip prosthesis according to claim 1 and 2, is characterized in that: described solid incidence (3) is 130 ° with the angle of encircling type handle body (1).
4. a kind of memorial alloy encircling type artificial hip prosthesis according to claim 3, is characterized in that: described solid incidence and encircling type handle body adopt screw (7) to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520791429.7U CN205094682U (en) | 2015-10-14 | 2015-10-14 | Memory alloy surrounds artifical hip joint prosthesis of formula |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520791429.7U CN205094682U (en) | 2015-10-14 | 2015-10-14 | Memory alloy surrounds artifical hip joint prosthesis of formula |
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| CN205094682U true CN205094682U (en) | 2016-03-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105167887A (en) * | 2015-10-14 | 2015-12-23 | 兰州西脉记忆合金股份有限公司 | Memory alloy embracing type artificial hip joint prosthesis and implantation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105167887A (en) * | 2015-10-14 | 2015-12-23 | 兰州西脉记忆合金股份有限公司 | Memory alloy embracing type artificial hip joint prosthesis and implantation method thereof |
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