CN104306084A - Anti-loosening hip joint prosthesis - Google Patents
Anti-loosening hip joint prosthesis Download PDFInfo
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- CN104306084A CN104306084A CN201410593755.7A CN201410593755A CN104306084A CN 104306084 A CN104306084 A CN 104306084A CN 201410593755 A CN201410593755 A CN 201410593755A CN 104306084 A CN104306084 A CN 104306084A
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Abstract
The invention relates to an anti-loosening hip joint prosthesis, comprising an acetabular prosthesis and a femoral prosthesis matching with each other. The acetabular prosthesis is arranged on the human hip bone; the femoral prosthesis is arranged on the human femur. The femoral prosthesis comprises a head, a joint neck and a femoral stem; the head is arranged at one end of the joint neck; the femoral stem is arranged at the other end of the joint neck. The femoral prosthesis further comprises fixing nails. The three-sixths to four-sixths part of the femoral stem is provided with fixing holes corresponding to the fixing nails in the vertical direction; the fixing nails penetrate the fixing holes; two ends of every fixing nail are both fixed to the human femur. The anti-loosening hip joint prosthesis has the advantages that the fixing pins help decrease stress around the upper femoral hip joint prosthesis, increase stability of the hip joint prosthesis and decrease peripheral micro loosening of the hip joint prosthesis, and the risk of peri-prosthetic femoral fracture of the hip joint can be reduced.
Description
Technical field
The invention belongs to medical instruments field, be specifically related to a kind of loosing prevention hip prosthesis.
Background technology
Extensively adopt replacement of total hip (THA) to treat hip lesion in latter stage at end at present in the world, THA therapeutic effect, through clinical practice for many years, has obtained certainly sufficient and has developed into a kind of reliable treatment means.THA adopts various types of hip prosthesis, can be divided into bone-cement type prosthese and cementless prosthesis (i.e. biotype prosthese) according to the fixed form of hip prosthesis, and postoperative hip prosthesis loosens and hip prosthesis surrounding fracture is the major complications of THA and extensively concerned.During THA patients with functional exercise of postoperative initial stage may there is micro-loosening in hip prosthesis, and the deformation under the effect of various power of a few stressed key point of hip prosthesis is comparatively large, hip prosthesis surrounding fracture may be there is under the long term of power or burst violence.
Utility model content
In order to solve the problems referred to above that prior art exists, the invention provides and can reduce micro-around hip prosthesis loosening and a kind of loosing prevention hip prosthesis of risk of hip prosthesis surrounding fracture.
The technical solution adopted in the present invention is:
A kind of loosing prevention hip prosthesis, it comprises the acetabular component and thighbone end prosthesis that cooperatively interact, and described acetabular component is located on the hipbone of human body, and described thighbone end prosthesis is located on the femur of human body; Described thighbone end prosthesis comprises head, joint neck and femoral stem, and described head is located at one end of described joint neck, and described femoral stem is located at the other end of joint neck; Described thighbone end prosthesis also comprises staple, and in the 3/6-4/6 position of its vertical direction, corresponding described staple is provided with fixing hole to described femoral stem, and described staple is arranged in described fixing hole, and the two ends of described staple are all fixed on the femur of human body.
Adopt above structure, in the 3/6-4/6 position of its vertical direction, corresponding described staple is provided with fixing hole to described femoral stem, and described staple is arranged in described fixing hole, and the two ends of described staple are all fixed on the femur of human body.Because staple is arranged in described fixing hole, and the two ends of described staple are all fixed on the femur of human body, therefore, it is possible to play fixing effect to hip prosthesis, reduce micro-around hip prosthesis loosening; Staple is fixed on the 3/6-4/6 position of femoral stem at its vertical direction simultaneously, greatly can reduce the stress of the crucial stress point of hip prosthesis, reduce the effect of various motion mode to the power of the sclerotin of hip prosthesis upper end fragility, and then reduce the risk of hip prosthesis surrounding fracture.
Preferably, the quantity of described fixing hole is two, and each described fixing hole is equipped with a staple, and the axis direction of each described fixing hole is transverse direction, and the axis of two described fixing holes is spatially interspersed.By arranging two fixing holes and two staples, fixed effect can be increased better.And the axis direction of each described fixing hole is transverse direction, the axis of two described fixing holes is spatially interspersed, what staple can be made to fix is more stable, the axis of two described fixing holes is spatially interspersed, namely be that two described staples are spatially interspersed, can be fixed hip prosthesis from different directions, reduce the micro-of hip prosthesis and loosen.
Preferably, described fixing hole is straight trough mouth, the described length direction of straight trough mouth and the length side of femoral stem, and to unanimously, the distance between two centers of circle of described straight trough mouth is 1mm.This kind of structure allows micro-sedimentation of postoperative initial stage 0-1mm, namely by changing the stress conduction pattern of distal femur after micro-sedimentation terminates, by vertical, side and act on distal femur fragile sclerotin when rotating stress transfer to strong femoral shaft.
Preferably, the angle that the axis of two described fixing holes is formed is 60 degree.This kind of structure, good stability, and can not impact the blood vessel of human femur under loading upper end and the neural tissue that waits.
Preferably, the distance between two described fixing holes is 0.5-1.5cm.This distance can make the stability of the staple being arranged in fixing hole better.
Preferably, described staple comprises the head of a nail, nail bar and nail tip, and one end of described nail bar is located at by the described head of a nail, and described nail tip is provided with the other end of described nail bar, and the lateral side of femur of human body is located in one end that described staple is provided with the head of a nail.Due in the process of operation, patient is that face upwards couches on operating-table, and one end that therefore described staple is provided with the head of a nail is located at outside human femur under loading, can the operation of more convenient doctor.
Preferably, the angle that the axis of two described staples is formed is 60 degree.This kind of structure, good stability, and can not impact the blood vessel of human femur under loading upper end and the neural tissue that waits.
Preferably, described staple is titanium alloy material molding.The staple of titanium alloy material molding has the following advantages: hardness is large and lightweight, and implant into body can not affect activity because of weight issue; Stainless corrosion-resistant, the erosion of environment material can be resisted, therefore safety; Do not cause the immunoreation of body, make metal itself not by the attack of immune material.
Preferably, described staple is drive screw, screw thread on described staple comprises the first screw thread and the second screw thread, described first screw thread is located at described nail bar near nail tip and the part be fixed on the femur of human body, and described second screw thread is located at described nail bar near the head of a nail and the part be fixed on the femur of human body.The described staple part be fixed on the femur of human body is the both sides of cortical bone.This kind of structure had both facilitated staple to be fixed on the femur of human body, can match again with fixing hole.
Beneficial effect of the present invention is: replacement of total hip relates to osteotomy and expands marrow, and the proximal femur surface stress situation of old friend's body highlights important.Femoral stem long-term stability in hip prosthesis needs its design and inserts the proximal femur biomechanics meeting human body dynamic, realizes effective micro-strand cable.Under combined stress, femoral stem needs strong sclerotin support, staple of the present invention can reduce the stress around proximal femur hip prosthesis, increase the stability of hip prosthesis, reduce micro-around hip prosthesis loosening, the risk of hip prosthesis surrounding fracture can be reduced.
Accompanying drawing explanation
Fig. 1 be a kind of loosing prevention hip prosthesis of the present invention face structural representation;
Fig. 2 is the plan structure schematic diagram (omission acetabular component) of a kind of loosing prevention hip prosthesis of the present invention;
Fig. 3 is the structural representation of the fixing hole of a kind of loosing prevention hip prosthesis of the present invention;
Fig. 4 is the structural representation of the staple of a kind of loosing prevention hip prosthesis of the present invention;
Fig. 5 is the stress test point schematic diagram in stress test;
Fig. 6 is the schematic cross-section in face, A, B 2 places in Fig. 5;
Fig. 7 is the schematic cross-section in face, C point place in Fig. 5;
Fig. 8 is the schematic cross-section in face, D point place in Fig. 5;
Fig. 9 is the schematic cross-section in face, E, F 2 places in Fig. 5;
Figure 10 is the schematic cross-section in face, G 2 places in Fig. 5;
Figure 11 is the schematic cross-section in face, J, K 2 places in Fig. 5;
Figure 12 is the schematic cross-section in face, H, I 2 places in Fig. 5;
Figure 13 is the stress diagram of D point and G point in compression stress test;
Figure 14 is the stress diagram of K point and J point in compression stress test;
Figure 15 is the stress diagram of D point and G point in the stress test of side;
Figure 16 is the stress diagram of K point and J point in the stress test of side;
Figure 17 is the stress diagram of D point in distorting stress test;
Figure 18 is the stress diagram of G point in distorting stress test.
In figure: 1, acetabular component; 2, thighbone end prosthesis; 21, head; 22, joint neck; 23, femoral stem; 231, fixing hole; 24, staple; 241, nail tip; 242, bar is followed closely; 243, the head of a nail; 244, screw thread; 244a, the first screw thread; 244b, the second screw thread.
Detailed description of the invention
As shown in one of Fig. 1-2, the invention provides a kind of loosing prevention hip prosthesis, it comprises the acetabular component 1 and thighbone end prosthesis 2 that cooperatively interact, and described acetabular component 1 is located on the hipbone of human body, and described thighbone end prosthesis 2 is located on the femur of human body; Described thighbone end prosthesis 2 comprises head 21, joint neck 22 and femoral stem 23, and described head 21 is located at one end of described joint neck 22, and described femoral stem 23 is located at the other end of joint neck 22; Described thighbone end prosthesis 2 also comprises staple 24, described femoral stem 23 is provided with fixing hole 231 at the 3/6-4/6 position 3/6-4/6 position of length shown in L1 (namely in Fig. 1) the corresponding described staple 24 of its vertical direction, described staple 24 is arranged in described fixing hole 231, and the two ends of described staple 24 are all fixed on the femur of human body.
Adopt above structure, in the 3/6-4/6 position of its vertical direction, corresponding described staple 24 is provided with fixing hole 231 to described femoral stem 23, and described staple 24 is arranged in described fixing hole 231, and the two ends of described staple 24 are all fixed on the femur of human body.Because staple 24 is arranged in described fixing hole 231, and the two ends of described staple 24 are all fixed on the femur of human body, therefore, it is possible to play fixing effect to hip prosthesis, reduce micro-around hip prosthesis loosening; Staple 24 is fixed on the 3/6-4/6 position of femoral stem 23 at its vertical direction simultaneously, greatly can reduce the stress of the crucial stress point of hip prosthesis, reduce the effect of various motion mode to the power of the sclerotin of hip prosthesis upper end fragility, and then reduce the risk of hip prosthesis surrounding fracture.
Preferably, as shown in Figure 3, described fixing hole 231 is straight trough mouth, and the length direction of described straight trough mouth is consistent with the length direction of femoral stem 23, and in the distance between two centers of circle of described straight trough mouth and Fig. 3, the length of L2 is 1mm.The width of shown straight trough mouth, namely in Fig. 3, the length of L3 is corresponding by the diameter following closely bar 242 in staple 24.This kind of structure allows micro-sedimentation of postoperative initial stage 0-1mm, namely by changing the stress conduction pattern of distal femur after micro-sedimentation terminates, by vertical, side and act on distal femur fragile sclerotin when rotating stress transfer to strong femoral shaft.
Preferably, the quantity of described fixing hole 231 is two, and each described fixing hole 231 is equipped with a staple 24, and the axis direction of each described fixing hole 231 is transverse direction, and the axis of two described fixing holes 231 is spatially interspersed.By arranging two fixing holes 231 and two staples 24, fixed effect can be increased better.And the axis direction of each described fixing hole 231 is transverse direction, the axis of two described fixing holes 231 is spatially interspersed, what staple 24 can be made to fix is more stable, the axis of two described fixing holes 231 is spatially interspersed, namely be that two described staples 24 are spatially interspersed, can be fixed hip prosthesis from different directions, reduce the micro-of hip prosthesis and loosen.
Preferably, two described fixing holes 231 axis formed angle and Fig. 2 in the angle shown in α be 60 degree.This kind of structure, good stability, and can not impact the blood vessel of human femur under loading upper end and the neural tissue that waits.
Preferably, in the distance between two described fixing holes 231 and Fig. 1, the length shown in L4 can be 0.5cm, 0.8cm, 1cm, 1.2cm and 1.5cm.
Preferably, as shown in Figure 4, described staple 24 comprises nail tip 241, nail bar 242 and the head of a nail 243, and described nail tip 241 is located at one end of described nail bar 242, the described head of a nail 243 is provided with the other end of described nail bar 242, and the lateral side of femur of human body is located in one end that described staple 24 is provided with the head of a nail 243.Due in the process of operation, patient is that face upwards couches on operating-table, and one end that therefore described staple 24 is provided with the head of a nail 243 is located at outside human femur under loading, can the operation of more convenient doctor.
Preferably, two described staples 24 axis formed angle and Fig. 2 in α angle be 60 degree.This kind of structure, good stability, and can not impact the blood vessel of human femur under loading upper end and the neural tissue that waits.
Preferably, described staple 24 is titanium alloy material molding.The staple 24 of titanium alloy material molding has the following advantages: hardness is large and lightweight, and implant into body can not affect activity because of weight issue; Stainless corrosion-resistant, the erosion of environment material can be resisted, therefore safety; Do not cause the immunoreation of body, make metal itself not by the attack of immune material.
Preferably, described staple 24 is drive screw, screw thread 24 on described staple 24 comprises the first screw thread 244a and the second screw thread 244b, described first screw thread 244a is located at described nail bar 242 near nail tip 241 and the part be fixed on the femur of human body, and described second screw thread 244b is located at described nail bar 242 near the head of a nail 243 and the part be fixed on the femur of human body.Described staple 24 part be fixed on the femur of human body is the both sides of cortical bone.This kind of structure had both facilitated staple 24 to be fixed on the femur of human body, can match again with fixing hole 231.
Beneficial effect of the present invention is: replacement of total hip relates to osteotomy and expands marrow, and the proximal femur surface stress situation of old friend's body highlights important.Femoral stem 23 long-term stability in hip prosthesis needs its design and inserts the proximal femur biomechanics meeting human body dynamic, realizes effective micro-strand cable.Under combined stress, femoral stem 23 needs strong sclerotin support, staple 24 of the present invention can reduce the stress around proximal femur hip prosthesis, increase the stability of hip prosthesis, reduce micro-around hip prosthesis loosening, the risk of hip prosthesis surrounding fracture can be reduced.
The excellent properties of a kind of loosing prevention hip prosthesis of the present invention is proved further below by way of Experiments of Machanics.
Wherein pressure detection point position as is shown in figures 5-12; In Fig. 6-12, the rear side of the corresponding human femur under loading of upper and lower, left and right difference in figure, front side, inner side, outside.
Wherein in Fig. 5, A point and B point position are bottom neck of femur; C point position is little tuberosity; D point position is greater trochanter upper end; E point and F point position are little tuberosity basilar part; G point position is that greater trochanter and femoral shaft are had a common boundary; J point and K point position are the point midway after Using prosthesis; H point and I point position are the remote location after Using prosthesis.
1, compression stress test: (wherein J point and K point are the fixing point close to staple, and D point and G point are hip prosthesis the most obvious loosening point):
1) test method:
Active force mode: upper end is by pressure effect vertically downward, and lower end is supported by level table.
Load mode: pressure is started from scratch and slowly increased, until setting value (before femur destruction).
Test mode: the microstrain adopting gauge length 2mm, is affixed on measuring point place, obtains strain value by deformeter.
Test instrunment: electronic universal tester (load and obtain corresponding force value).
Calculate and result: according to generalized Hooke law, establishment MATLAB software, obtain stress, and mapping obtains stress and pressure relationship plot by strain calculation.
2) result of the test:
Analyze 1: as shown in figure 13, the stress of D point and G point is just, and is tension; 2 stress intensities increase linearly with pressure increase, and the stress value of D point is greater than the stress value of G point; When pressure is to certain value, there is significantly fluctuation in curve, the stress of D point increases rapidly, the stress of G point sharply reduces, and shows that the relation of now stress and pressure produces certain change, should be that prosthese contacts with femur and effect starts to change, thus the power making pressure act on femur by prosthese changes, namely prosthese starts to loosen, and just produces prosthetic loosening as seen under non-growing state during low stress, and therefore prosthetic loosening is a subject matter.After prosthetic loosening, the relation of stress and pressure can not calculate in proportion.This stress of 2 is primarily of bending generation.This stress value of 2 is relatively little, for femur intensity be secondary.
Analyze 2: as shown in figure 14, the stress of K point is just, is tension, and the stress of J point is negative, is compressive stress, and 2 stress intensities increase linearly with pressure increase, and the stress value of J point is greater than the stress value of K point; When pressure arrives certain value, there is fluctuation in curve, show that the relation of now stress and pressure produces certain change, should be that prosthese contacts with femur and effect starts to change, thus the power making pressure act on femur by prosthese changes, namely prosthese starts to loosen, and just produces prosthetic loosening as seen under non-growing state during low stress, and therefore prosthetic loosening is a subject matter.
2, side stress test: (, close to staple fixing point, D point and G point are hip prosthesis the most obvious loosening point for J point and K point):
1) test method:
Tested object: metal prostheses (biotype) and fresh femur assembly--No. 1.
Active force mode: femur is vertically placed, stand is fixed in upper end, and lower end is by horizontal forward direction thrust (backward pulling force) effect, and generation is bending, and (active force is 40cm to the distance of upper stiff end, therefore respective action power is less, and moment is larger).
Overall main variant: bending.
Load mode: horizontal force is started from scratch and slowly increased, until setting value (before femur destruction).
Test mode: the microstrain sheet adopting gauge length 2mm, is affixed on measuring point place, obtains strain value by deformeter.
Test instrunment: electronic universal tester loads to worm screw, Force sensor (load and obtain corresponding force value).
Calculate and result: according to generalized Hooke law, establishment MATLAB software, obtain stress, and mapping obtains stress and horizontal force relation curve by strain calculation.
Note: prosthese and femur assembly only have one, this experiment order is the rear i.e. second time of compression.
2) result of the test
Analyze 1: as shown in figure 15, the stress of D point is close to zero; The stress of G point is just, for tension, stress intensity substantially increases with horizontal force and increases linearly, wherein curve has slight fluctuations, shows that the relation of now stress and horizontal force produces certain change, should be that prosthese contacts with femur and effect starts to change, thus the power making horizontal force act on femur by prosthese changes, namely prosthese starts locally to loosen, and under non-growing state, just produce prosthetic loosening during low stress as seen, therefore prosthetic loosening is a subject matter.The stress of this point is primarily of bending generation, and because being positioned near neutral axis, stress value is less, for femur intensity be secondary.
Analyze 2: as shown in figure 16, the stress of K point is just, is tension, and the stress of J point is negative, is compressive stress, 2 stress intensities substantially increase with horizontal force and increase linearly, and the stress value of some J is less than the stress value of a K.This stress of 2 is primarily of bending generation.The stress value of some K is greater than the stress value of I point and F point, is again femur cross section comparatively carefully and near prosthese front end acts on, needs to pay close attention to it and change.
3, turning stress test: (, close to screw fixing point, D point and G point are hip prosthesis the most obvious loosening point for J point and K point):
1) test method:
Tested object: metal prostheses (biotype) and fresh femur assembly--No. 1.
Active force mode: femur horizontal positioned, stand is fixed in upper end, and lower end, by torsional interaction, produces and reverses.
Overall main variant: reverse.
Load mode: moment of torsion is started from scratch and slowly increased, until setting value (before femur destruction).
Test mode: the microstrain sheet adopting gauge length 2mm, is affixed on measuring point place, obtains strain value by deformeter.
Test instrunment: torsion testing machine (load and obtain corresponding torque value).
Calculate and result: according to generalized Hooke law, establishment MATLAB software, obtain stress, and mapping obtains stress and torque relationship curve by strain calculation.
2) result of the test
Analyze 1: as shown in figure 17, D1 is the maximum principal stress of D point, and D2 is the minimum principal stress of D point; D3 is the principal stress direction angle of D point; As can be seen from Figure 17 the maximum principal stress of D point is just, is tension, and minimum principal stress is negative, is compressive stress; Tension and compressive stress size leading portion substantially increase with moment of torsion and increase linearly; When moment of torsion arrives certain value, there is fluctuation in curve, show that the relation of now stress and moment of torsion produces certain change, should be that prosthese contacts with femur and effect starts to change, thus the power making moment of torsion act on femur by prosthese changes, namely prosthese starts to loosen, and just produces prosthetic loosening as seen under non-growing state during low stress, and therefore prosthetic loosening is a subject matter.After prosthetic loosening, the relation of stress and moment of torsion can not calculate in proportion.
Analyze 2: as shown in figure 18, the stress of G point (becoming to bear 45 degree of directions with axis) is just, be tension, stress intensity substantially increases with moment of torsion and increases linearly, and wherein curve has slight fluctuations.This stress produces primarily of torsion, because of its position than D point closer to femoral shaft axis, therefore distorting stress value is less.
The present invention is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present invention; no matter but any change is done in its shape or structure; every have identical with the application or akin technical scheme, all drops within protection scope of the present invention.
Claims (8)
1. a loosing prevention hip prosthesis, is characterized in that: it comprises the acetabular component and thighbone end prosthesis that cooperatively interact, and described acetabular component is located on the hipbone of human body, and described thighbone end prosthesis is located on the femur of human body; Described thighbone end prosthesis comprises head, joint neck and femoral stem, and described head is located at one end of described joint neck, and described femoral stem is located at the other end of joint neck; Described thighbone end prosthesis also comprises staple, and in the 3/6-4/6 position of its vertical direction, corresponding described staple is provided with fixing hole to described femoral stem, and described staple is arranged in described fixing hole, and the two ends of described staple are all fixed on the femur of human body.
2. a kind of loosing prevention hip prosthesis according to claim 1, it is characterized in that: the quantity of described fixing hole is 1-2, each described fixing hole is equipped with a staple, the axis direction of each described fixing hole is transverse direction, and the axis of two described fixing holes is spatially interspersed.
3. a kind of loosing prevention hip prosthesis according to claim 2, it is characterized in that: described fixing hole is straight trough mouth, the length direction of described straight trough mouth is consistent with the length direction of femoral stem, and the distance between two centers of circle of described straight trough mouth is 1mm.
4. a kind of loosing prevention hip prosthesis according to claim 2, is characterized in that: the distance between two described fixing holes is 0.5-1.5cm.
5. according to a kind of loosing prevention hip prosthesis one of claim 1-4 Suo Shu, it is characterized in that: described staple comprises the head of a nail, nail bar and nail tip, one end of described nail bar is located at by the described head of a nail, described nail tip is located at the other end of described nail bar, and the lateral side of femur of human body is located in one end that described staple is provided with the head of a nail.
6. a kind of loosing prevention hip prosthesis according to claim 5, is characterized in that: the angle that the axis of two described staples is formed is 60 degree.
7. a kind of loosing prevention hip prosthesis according to claim 5, is characterized in that: described staple is titanium alloy material molding.
8. a kind of loosing prevention hip prosthesis according to claim 6, it is characterized in that: described staple is drive screw, screw thread on described staple comprises the first screw thread and the second screw thread, described first screw thread is located at described nail bar near nail tip and the part be fixed on the femur of human body, and described second screw thread is located at described nail bar near the head of a nail and the part be fixed on the femur of human body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410593755.7A CN104306084A (en) | 2014-10-30 | 2014-10-30 | Anti-loosening hip joint prosthesis |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410593755.7A CN104306084A (en) | 2014-10-30 | 2014-10-30 | Anti-loosening hip joint prosthesis |
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| CN104306084A true CN104306084A (en) | 2015-01-28 |
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| FR2925841A1 (en) * | 2007-12-26 | 2009-07-03 | Ceram Sarl I | Hip prosthesis i.e. arthroplasty prosthesis, for e.g. cervico-trochanteric treatment, of femur, has femoral stem cooperating with medullary canal and neck of head and including body with length adapted for occupying diaphyseal support |
| WO2010045116A1 (en) * | 2008-10-14 | 2010-04-22 | Zimmer, Inc. | Modular intramedullary nail |
| FR2941863A1 (en) * | 2009-02-10 | 2010-08-13 | Fournitures Hospitalieres Ind | Prosthetic femoral stems for use during installation of hip prosthesis on patient, has forming part projected from femur, where positioning between part and hole is conceived so that distance between center and axis is identical to stems |
| CN102551921A (en) * | 2012-01-13 | 2012-07-11 | 南方医科大学 | Artificial femoral stem for fracture surgery around hip joint prosthesis |
| CN202724039U (en) * | 2012-02-24 | 2013-02-13 | 常州市海盈五金科技有限公司 | Artificial hip joint femoral stem |
| CN203328856U (en) * | 2013-06-24 | 2013-12-11 | 重庆润泽医药有限公司 | Simply combined hip joint |
| CN203341857U (en) * | 2013-06-18 | 2013-12-18 | 李万红 | Micro-momentum hip joint implantation material |
| CN204274722U (en) * | 2014-10-30 | 2015-04-22 | 嘉兴市中医医院 | A kind of loosing prevention hip prosthesis |
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1307952C (en) * | 2000-03-16 | 2007-04-04 | 斯罗博丹·特皮克 | Screw anchored joint prosthesis |
| CN2484918Y (en) * | 2001-05-28 | 2002-04-10 | 韦兆祥 | Artificial hip joint and femur shaft |
| FR2925841A1 (en) * | 2007-12-26 | 2009-07-03 | Ceram Sarl I | Hip prosthesis i.e. arthroplasty prosthesis, for e.g. cervico-trochanteric treatment, of femur, has femoral stem cooperating with medullary canal and neck of head and including body with length adapted for occupying diaphyseal support |
| WO2010045116A1 (en) * | 2008-10-14 | 2010-04-22 | Zimmer, Inc. | Modular intramedullary nail |
| FR2941863A1 (en) * | 2009-02-10 | 2010-08-13 | Fournitures Hospitalieres Ind | Prosthetic femoral stems for use during installation of hip prosthesis on patient, has forming part projected from femur, where positioning between part and hole is conceived so that distance between center and axis is identical to stems |
| CN102551921A (en) * | 2012-01-13 | 2012-07-11 | 南方医科大学 | Artificial femoral stem for fracture surgery around hip joint prosthesis |
| CN202724039U (en) * | 2012-02-24 | 2013-02-13 | 常州市海盈五金科技有限公司 | Artificial hip joint femoral stem |
| CN203341857U (en) * | 2013-06-18 | 2013-12-18 | 李万红 | Micro-momentum hip joint implantation material |
| CN203328856U (en) * | 2013-06-24 | 2013-12-11 | 重庆润泽医药有限公司 | Simply combined hip joint |
| CN204274722U (en) * | 2014-10-30 | 2015-04-22 | 嘉兴市中医医院 | A kind of loosing prevention hip prosthesis |
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Application publication date: 20150128 |