CN105167887A - Memory alloy embracing type artificial hip joint prosthesis and implantation method thereof - Google Patents
Memory alloy embracing type artificial hip joint prosthesis and implantation method thereof Download PDFInfo
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- CN105167887A CN105167887A CN201510660032.9A CN201510660032A CN105167887A CN 105167887 A CN105167887 A CN 105167887A CN 201510660032 A CN201510660032 A CN 201510660032A CN 105167887 A CN105167887 A CN 105167887A
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Abstract
A memory alloy embracing type artificial hip joint prosthesis comprises an embracing handle body, wherein multiple pairs of embracing arms are symmetrically arranged on the embracing handle body, a fixation hook in the same direction with the embracing arms is arranged at the lower end of the embracing handle body, a handle body slope is arranged at the upper end of the embracing handle body and located on the opening sides of the embracing arms, a solid head-neck part is arranged on the handle body slope, and a slip catch is arranged at the lower end of the handle body slope. Before the prosthesis is implanted, the prosthesis is placed into disinfectant brine ice, the embracing arms are dilated by medical dilating forceps, the handle body slope and an affected bone removal surface coincide during implantation, holes are bored in positions, corresponding to the slip catch and the fixation hook, of a femur, the slip catch and the fixation hook are inserted into the corresponding holes for fixation, then the hot compressing is performed on the embracing arms with gauze soaked with disinfectant brine until the embracing arms recover the original shapes completely, and the implantation is finished. The memory alloy embracing type artificial hip joint prosthesis adopts a special memory effect of a nickel-titanium memory alloy material, the memory alloy has few foreign body reactions, the postoperative complications are reduced, and safety, simplicity and convenience are realized in a mounting process.
Description
Technical field
The invention belongs to Medical orthopedic implantation instrument technical field, be specifically related to a kind of memorial alloy encircling type artificial hip prosthesis and method for implantation thereof.
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.
Summary of the invention
Technical problem to be solved by this invention provides a kind of memorial alloy encircling type artificial hip prosthesis for shortcoming of the prior art.
Another object of the present invention is the method for implantation in order to provide above-mentioned a kind of memorial alloy encircling type artificial hip prosthesis.
Following technical scheme is adopted for solving technical problem of the present invention:
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.
The present invention 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 the present invention 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, the present invention 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.Handle body inclined-plane of the present invention 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 structural representation of the present invention;
Fig. 2 is front view of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention 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.
The present invention 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 the present invention 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, the present invention 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.Handle body inclined-plane of the present invention 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 (6)
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, 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 2, is characterized in that: described solid incidence (3) is 130 ° with the angle of encircling type handle body (1).
5. a kind of memorial alloy encircling type artificial hip prosthesis according to claim 4, is characterized in that: described solid incidence and encircling type handle body adopt screw (7) to be connected.
6. the method for implantation of a kind of memorial alloy encircling type artificial hip prosthesis described in above-mentioned arbitrary claim, it is characterized in that: 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) are inserted be fixed in the corresponding aperture beaten, then arm (6) 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 (6), implantation completes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510660032.9A CN105167887B (en) | 2015-10-14 | 2015-10-14 | Memory alloy embracing type artificial hip joint prosthesis and implantation method thereof |
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| CN201510660032.9A CN105167887B (en) | 2015-10-14 | 2015-10-14 | Memory alloy embracing type artificial hip joint prosthesis and implantation method thereof |
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| CN105167887B CN105167887B (en) | 2017-02-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108210054A (en) * | 2018-02-05 | 2018-06-29 | 兰州西脉记忆合金股份有限公司 | A kind of memorial alloy femur fracture plate |
| CN115645119A (en) * | 2022-12-12 | 2023-01-31 | 兰州西脉记忆合金股份有限公司 | Hip joint prosthesis memory alloy femoral stem component system and using method thereof |
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| CN2472682Y (en) * | 2001-04-17 | 2002-01-23 | 上海市嘉定区南翔医院 | Internal fixer for femoral fracture |
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| CN115645119A (en) * | 2022-12-12 | 2023-01-31 | 兰州西脉记忆合金股份有限公司 | Hip joint prosthesis memory alloy femoral stem component system and using method thereof |
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| CN105167887B (en) | 2017-02-01 |
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