CN113317911A - Pressure expansion type femoral stem - Google Patents
Pressure expansion type femoral stem Download PDFInfo
- Publication number
- CN113317911A CN113317911A CN202110622852.4A CN202110622852A CN113317911A CN 113317911 A CN113317911 A CN 113317911A CN 202110622852 A CN202110622852 A CN 202110622852A CN 113317911 A CN113317911 A CN 113317911A
- Authority
- CN
- China
- Prior art keywords
- cavity
- bag
- handle body
- femoral stem
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000007569 slipcasting Methods 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 11
- 239000004568 cement Substances 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 2
- 108010048734 sclerotin Proteins 0.000 abstract description 14
- 238000002513 implantation Methods 0.000 abstract description 6
- 238000001125 extrusion Methods 0.000 abstract description 4
- 238000003780 insertion Methods 0.000 description 11
- 230000037431 insertion Effects 0.000 description 11
- 210000000988 bone and bone Anatomy 0.000 description 7
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 230000001154 acute effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000007774 longterm Effects 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 208000037408 Device failure Diseases 0.000 description 1
- 208000001132 Osteoporosis Diseases 0.000 description 1
- 208000037099 Prosthesis Failure Diseases 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000000151 anti-reflux effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002639 bone cement Substances 0.000 description 1
- 210000001185 bone marrow Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010883 osseointegration Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 238000011541 total hip replacement Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3662—Femoral shafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3662—Femoral shafts
- A61F2/3672—Intermediate parts of shafts
Abstract
The invention discloses a pressurization expansion type femoral stem which comprises a stem body, wherein a cavity is formed in the stem body, a plurality of through holes are formed in the side wall of the stem body, clamping pieces are rotationally connected in the through holes, an expansion assembly is placed in the cavity, a limiting annular nut is in threaded connection with the top of the cavity, and the expansion assembly is located at the bottom of the limiting annular nut. According to the invention, the clamping piece is arranged, so that when the expansion assembly expands, the clamping piece extends out of the through hole and is inserted into the sclerotin, and the handle body is fixed in the sclerotin, so that the handle body cannot move up and down in the sclerotin, and the stability of the handle body after implantation is improved. According to the invention, the expansion component is adopted instead of the hard extrusion component, the distance of the extrusion clamping components can be controlled according to the shape of the marrow cavity, the clamping components can be fully fitted with the marrow cavity, the conduction force shared by the clamping components is more balanced, the stability of the handle body after implantation is improved, and the problem of near-end stress shielding is effectively solved.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a pressurization expansion type femoral stem.
Background
The loosening of the femoral stem prosthesis in the total hip replacement operation is the main reason of the operation failure, so the stability of the femoral stem prosthesis in a human body is an important factor influencing the service life of the femoral stem prosthesis.
At present, the biological fixation is the main fixation type of the femoral stem prosthesis in clinic. The biological fixation is achieved by integrating bone tissues and rough structures (such as titanium slurry spraying) on the surface of the handle body. However, the time required for the biological fixation to be effective for osseointegration is a long-term mode of fixation.
The initial fixation is mostly mechanical fixation, namely temporary fixation is formed by utilizing the structure of the femoral stem and bone, and the early fixation effect directly influences the long-term fixation effect. At present, the position of the femoral stem prosthesis adopting the existing initial fixing mode can be changed after being stressed, so that the femoral stem is loosened or sinks secondarily, and the failure of the operation is caused. In addition, because the shape of the femoral bone marrow cavity is irregular, the existing initial fixing mode can only realize local fixing, so the initial stability of the existing femoral stem prosthesis initial fixing technology cannot be well ensured, and hidden troubles are left for long-term prosthesis failure.
Disclosure of Invention
The invention aims to provide a pressurizing expansion type femoral stem, which solves the problems in the prior art, enables a stem body not to move up and down in a bone and improves the stability of the stem body after being implanted.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a pressurization expansion type femoral stem which comprises a stem body, wherein a cavity is formed in the stem body, a plurality of through holes are formed in the side wall of the stem body, clamping pieces are rotationally connected in the through holes, an expansion assembly is placed in the cavity, a limiting annular nut is in threaded connection with the top of the cavity, and the expansion assembly is located at the bottom of the limiting annular nut.
Preferably, the clamping piece comprises a rotating shaft, the rotating shaft is rotatably connected with the inner wall of the through hole, a clamping block is fixedly connected to the rotating shaft, the clamping block is triangular, one end of the clamping block, which is close to the outer wall of the handle body, is a sharp angle, and one end of the clamping block, which is close to the inner wall of the handle body, is a fillet; the rounded corners of the fixture block are in contact connection with the expansion assembly.
Preferably, the inflation subassembly is including pressurizeing the bag, it is located to pressurize the bag in the cavity, pressurize the bag outer wall with the laminating of cavity inner wall, pressurize the bag with the contact of joint spare is connected, it is fixed with the slip casting mouth to pressurize the bag top, slip casting mouth threaded connection has the shutoff to block up, it is filled with water hardening material to pressurize the bag intussuseption, the slip casting mouth bottom is fixed with prevents the reflux valve.
Preferably, the two ends of the pressurizing bag are made of non-deformable semi-flexible materials, and the middle of the pressurizing bag is made of extensible materials.
Preferably, the bottom of the cavity is provided with an insertion groove, the bottom of the pressurizing bag is fixed with an insertion block, and the insertion groove is matched with the insertion block.
Preferably, a round hole is formed in the middle of the limiting ring nut, and arc-shaped grooves are formed in two sides of the top surface of the limiting ring nut.
Preferably, the water hardening substance is cement.
Preferably, the abduction angle of the fixture block at the proximal end is larger than that of the fixture block at the distal end under the same pressure.
The invention discloses the following technical effects:
according to the invention, the clamping piece is arranged, so that when the expansion assembly expands, the clamping piece extends out of the through hole and is inserted into the sclerotin, and the handle body is fixed in the sclerotin, so that the handle body cannot move up and down in the sclerotin, and the stability of the handle body after implantation is improved.
According to the invention, the expansion component is adopted instead of the hard extrusion component, the distance of the extrusion clamping components can be controlled according to the shape of the marrow cavity, the clamping components can be fully fitted with the marrow cavity, the conduction force shared by the clamping components is more balanced, the stability of the handle body after implantation is improved, and the problem of near-end stress shielding is effectively solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic structural view of a pressure-expandable femoral stem in example 1;
FIG. 2 is a schematic view showing the structure of a shank according to embodiment 1;
FIG. 3 is a schematic view showing the structure of a pressure bladder in embodiment 1;
FIG. 4 is a schematic structural view of a retainer ring nut according to embodiment 1;
FIG. 5 is a schematic structural diagram of a fixture block in embodiment 1;
FIG. 6 is a schematic view showing the structure of a pressure bladder in embodiment 2;
FIG. 7 is a partial enlarged view of part A in embodiment 2;
FIG. 8 is a schematic structural view of embodiment 3;
in the figure: 1. a handle body; 2. a cavity; 3. a through hole; 4. a limit ring nut; 5. a rotating shaft; 6. a clamping block; 7. a pressurizing bag; 8. a water hardening substance; 9. a grouting port; 10. an anti-reflux valve; 11. inserting grooves; 12. the insertion block 13 and the round hole; 14. an arc-shaped slot; 15. blocking; 16. a grouting pipe; 17. grouting holes; 18. inserting a block; 19. a base; 20. anti-skid projections; 21. anti-skid texture; 22. small acute angle.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example 1
Referring to fig. 1-5, the invention provides a pressurization expansion type femoral stem, which comprises a stem body 1, wherein a cavity 2 is formed in the stem body 1, a plurality of through holes 3 are formed in the periphery of the side wall of the stem body 1, clamping pieces are rotationally connected in the through holes 3, as the main force bearing part of the stem body 1 is a near end, the density of the through holes 3 at the near end of the stem body 1 is higher, the density of the through holes 3 at the far end is lower, the near end is a near end at an opening close to the cavity 2, and the far end is a far end at an opening far away from the cavity 2, the weight of the femoral stem can be reduced on the premise of ensuring the stability of the stem body, an expansion assembly is placed in the cavity 2, the top of the cavity 2 is in threaded connection with a limit ring nut 4, and the expansion assembly is located at the bottom of the limit ring nut 4.
During the use, pack into cavity 2 with expansion assembly in, then install 2 tops of cavity with spacing ring nut 4, press expansion assembly in 4 bottoms of spacing ring nut, the lower surface of 4 of spacing ring nut contacts with expansion assembly's top shoulder after the installation, fix expansion assembly in cavity 2, insert the marrow intracavity with handle body 1 afterwards, after the mounted position is confirmed, control expansion assembly expands, spacing ring nut 4 blocks expansion assembly and expands to the top when expansion assembly expands, make expansion assembly lateral expansion, extrude joint spare to the through-hole 3 outside, make joint spare insert in the sclerotin of marrow cavity lateral wall, increase the stability of handle body 1 after implanting.
According to a further optimized scheme, the clamping piece comprises a rotating shaft 5, the rotating shaft 5 is rotatably connected with the inner wall of the through hole 3, a clamping block 6 is fixedly connected to the rotating shaft 5, the clamping block 6 is triangular, one end, close to the outer wall of the handle body 1, of the clamping block 6 is a sharp corner, and one end, close to the inner wall of the handle body 1, of the clamping block 6 is a fillet; the rounded corner part of the fixture block 6 is in contact connection with the expansion component. When the expansion assembly expands, it is the one end of fillet to withstand fixture block 6, make fixture block 6 rotate around pivot 5, it is ejecting with the one end of taper angle with fixture block 6, insert in the sclerotin of marrow cavity lateral wall, play the effect of fixed handle body 1, prevent that handle body 1 from upwards becoming flexible, the stability of handle body 1 after the implantation has been increased, fixture block 6 is triangle-shaped simultaneously, the slope sets up in through-hole 3 of handle body 1, fixture block 6 stretches out from the through-hole, insert in the sclerotin, fix the handle body in the sclerotin, make the handle body can not reciprocate in the sclerotin, strengthen the power conduction that fixture block 6 undertakes, increase the stability of handle body after the implantation, can effectively solve the problem that near-end stress sheltered from.
Further optimize the scheme, the inflation subassembly is including pressurizeing bag 7, it is located to pressurize bag 7 in the cavity 2, pressurize bag 7 outer wall with the laminating of 2 inner walls of cavity, pressurize bag 7 with the joint spare contact is connected, it is fixed with slip casting mouth 9 to pressurize bag 7 top, 9 threaded connection of slip casting mouth has shutoff stopper 15, it is filled with water hardening material 8 to pressurize bag 7 intussuseption, water hardening material 8 is cement, preferably bone cement, 9 bottoms of slip casting mouth are fixed with prevents reverse flow valve 10. Water hardening substances 8 are injected into the pressurizing bag 7 from the injection port 9 to enable the pressurizing bag 7 to gradually expand, the limiting ring-shaped screw cap 4 blocks the pressurizing bag 7 from expanding towards the top end when the pressurizing bag 7 expands to enable the pressurizing bag 7 to expand towards the side face, the outer wall of the pressurizing bag 7 is attached to the inner wall of the cavity 2, the clamping block 6 is extruded out of the through hole 3, the anti-backflow valve 10 is fixed at the bottom of the injection port 9 and can prevent the water hardening substances 8 from flowing back before hardening and flowing out from the injection port 9 to ensure that the pressure in the pressurizing bag 7 does not leak, the amount of the water hardening substances 8 injected into the pressurizing bag 7 can be selected according to requirements, after the injection is finished, the sealing plug 15 is filled into the injection port 9, and after the water hardening substances 8 are solidified and hardened, the permanent setting can be carried out, and the retraction of the clamping block 6 is prevented.
The round corner surface of the fillet of the fixture block 6 is provided with a plurality of anti-skid protrusions 20, anti-skid textures 21 are laid on the outer side of the pressurizing bag 7, after the pressurizing bag 7 expands, the anti-skid protrusions 20 are abutted to the anti-skid textures 21, friction force between the fixture block 6 and the pressurizing bag 7 is increased, the fixture block 6 is prevented from retracting, the sharp corners of the fixture block 6 are formed by a plurality of small acute angles 22, the small acute angles 22 are distributed in a step shape, after the fixture block 6 is extruded by the pressurizing bag 7, the small acute angles 22 are respectively inserted into bone of the side wall of the marrow cavity, the contact area of the fixture block 6 and the bone of the side wall of the marrow cavity is increased, and the connection between the fixture block 6 and the side wall of the marrow cavity is more tight.
Further optimization scheme, pressurize 7 both ends and be non-deformable's semi-flexible material, can slightly warp, conveniently fix with pressurizing 7 bag in the handle body 1, possess certain hardness simultaneously, make and pressurize 7 both ends and keep certain shape, pressurize 7 middle part of the bag and be the extension material, make and pressurize 7 bag can expand or shrink, conveniently put into handle body 1 with pressurizing 7 bag during the shrink, can expand behind the inside packing water hardening matter 8 of pressurizing 7 bag.
Further optimization scheme, inserting groove 11 has been seted up to cavity 2 bottom, add the pressure bag 7 bottom and be fixed with grafting piece 12, inserting groove 11 and grafting piece 12 looks adaptation, conveniently will add the pressure bag 7 bottom and fix with cavity 2 bottom, grafting piece 12 is non-deformable's semi-flexible material, makes grafting piece 12 can produce slight deformation when getting into inserting groove 11, is difficult for breaking away from after getting into inserting groove 11.
Further optimization scheme, round hole 13 has been seted up in the middle of spacing ring nut 4, and slip casting mouth 9 is located round hole 13, can not shelter from slip casting mouth 9, conveniently carries out the slip casting from slip casting mouth 9, arc wall 14 has been seted up to 4 top surfaces both sides of spacing ring nut, provides the impetus for use tool installation spacing ring nut 4 time. Use special screwdriver to twist spacing ring nut 4 in handle body 1, special screwdriver top has two arc archs, two arc archs and two recess phase-matchs. The outer part of the limiting ring nut 4 is fixed with an end cover matched with the handle body 1 in shape, so that the limiting ring nut is attractive and practical and is prevented from being scratched.
According to a further optimized scheme, after the pressurizing bag 7 is expanded, the fixture block 6 is unfolded at a certain angle according to the distance from the periphery to the sclerotin, the extending angle of the fixture block 6 at the near end is larger than that of the fixture block 6 at the far end under the same pressure, so that the near end can conduct more stress, osteoporosis caused by stress shielding can be solved to a certain degree, the fixture blocks 6 at the near end and the far end can be inserted into the sclerotin, and the whole handle body 1 is fixed with the sclerotin more tightly.
Example 2
Referring to fig. 6 to 7, the difference from embodiment 1 is that a grouting pipe 16 is fixed on the inner side wall of a grouting opening 9, the anti-backflow valve 10 is fixed inside the grouting pipe 16, the bottom of the grouting pipe 16 is fixedly connected with the inner wall of the pressurizing bag 7, and a plurality of grouting holes 17 are formed in the side wall of the bottom of the grouting pipe 16. The water hardening substance 8 enters the pressurizing bag 7 from the grouting hole 17, so that the water hardening substance 8 at the bottom of the pressurizing bag 7 keeps flowing all the time, bubbles and air holes are prevented from occurring after the water hardening substance 8 is hardened, the structure of the hardened water hardening substance 8 is unstable, meanwhile, the grouting pipe 16 is a hard pipe, the grouting pipe 16 is directly pressed, the inserting block 12 can be inserted into the inserting groove 11, other tools are not needed, the grouting pipe 16 also plays a role in supporting and stabilizing the hardened water hardening substance 8, and a support is equivalently added in the water supply hardening substance 8.
Example 3
Referring to fig. 8, the difference from embodiment 1 is that the clamping member is replaced by an insertion block 18, the through hole 3 is a stepped hole, a base 19 is fixed to one end of the insertion block 18, the area of the base 19 is larger than that of the through hole 3, the base 19 is in contact connection with the pressurizing bag 7, the insertion block 18 is inserted into the through hole 3 and is in sliding connection with the through hole 3, the base 19 is arc-shaped and fits the radian of the cavity 2, and anti-slip textures or a plurality of small spines are arranged on one end, far away from the base 19, of the insertion block 18, so that the insertion block 18 is inserted into a bone after the pressurizing bag 7 is expanded, the contact area between the insertion block 18 and the bone is increased, and friction force is increased.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (8)
1. A pressurization inflation formula femoral stem which characterized in that: including the handle body (1), cavity (2) have been seted up in the handle body (1), a plurality of through-holes (3) have been seted up on the handle body (1) lateral wall, through-hole (3) internal rotation is connected with joint spare, the inflation subassembly has been placed in cavity (2), cavity (2) top threaded connection has spacing ring nut (4), the inflation subassembly is located spacing ring nut (4) bottom.
2. The pressure-expandable femoral stem according to claim 1, characterized in that: the clamping piece comprises a rotating shaft (5), the rotating shaft (5) is rotatably connected with the inner wall of the through hole (3), a clamping block (6) is fixedly connected onto the rotating shaft (5), the clamping block (6) is triangular, one end, close to the outer wall of the handle body (1), of the clamping block (6) is a sharp corner, and one end, close to the inner wall of the handle body (1), of the clamping block (6) is a fillet; the rounded corner part of the fixture block (6) is in contact connection with the expansion component.
3. The pressure-expandable femoral stem according to claim 1, characterized in that: the inflation subassembly is including pressurizeing bag (7), it is located to pressurize bag (7) in cavity (2), pressurize bag (7) outer wall with cavity (2) inner wall laminating, pressurize bag (7) with the joint piece contact is connected, it is fixed with slip casting mouth (9) to pressurize bag (7) top, slip casting mouth (9) threaded connection has shutoff stopper (15), it is filled with water hardening material (8) to pressurize bag (7) intussuseption, slip casting mouth (9) bottom is fixed with prevents reflux valve (10).
4. The pressure-expandable femoral stem according to claim 3, characterized in that: the two ends of the pressurizing bag (7) are made of non-deformable semi-flexible materials, and the middle of the pressurizing bag (7) is made of an extension material.
5. The pressure-expandable femoral stem according to claim 3, characterized in that: the bottom of the cavity (2) is provided with an inserting groove (11), the bottom of the pressurizing bag (7) is fixed with an inserting block (12), and the inserting groove (11) is matched with the inserting block (12).
6. The pressure-expandable femoral stem according to claim 1, characterized in that: round holes (13) are formed in the middle of the limiting ring nut (4), and arc-shaped grooves (14) are formed in the two sides of the top surface of the limiting ring nut (4).
7. The pressure-expandable femoral stem according to claim 3, characterized in that: the water hardening substance (8) is cement.
8. The pressure-expandable femoral stem according to claim 2, characterized in that: the abduction angle of the fixture block (6) at the near end is larger than that of the fixture block (6) at the far end under the same pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110622852.4A CN113317911A (en) | 2021-06-04 | 2021-06-04 | Pressure expansion type femoral stem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110622852.4A CN113317911A (en) | 2021-06-04 | 2021-06-04 | Pressure expansion type femoral stem |
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| CN113317911A true CN113317911A (en) | 2021-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110622852.4A Pending CN113317911A (en) | 2021-06-04 | 2021-06-04 | Pressure expansion type femoral stem |
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| CN (1) | CN113317911A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117243731A (en) * | 2023-11-16 | 2023-12-19 | 北京爱康宜诚医疗器材有限公司 | Femoral prosthesis |
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| CN110934668A (en) * | 2019-11-28 | 2020-03-31 | 佛山市逸合生物科技有限公司 | Femoral stem |
| CN112137707A (en) * | 2020-09-27 | 2020-12-29 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | A inflation sacculus and medical device for intervertebral disc plasty |
| CN112190370A (en) * | 2020-10-28 | 2021-01-08 | 北京中安泰华科技有限公司 | Locking femoral stem prosthesis of type that moves |
| CN112494178A (en) * | 2020-12-12 | 2021-03-16 | 北京中安泰华科技有限公司 | Expansion type fixed femoral stem prosthesis |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117243731A (en) * | 2023-11-16 | 2023-12-19 | 北京爱康宜诚医疗器材有限公司 | Femoral prosthesis |
| CN117243731B (en) * | 2023-11-16 | 2024-03-29 | 北京爱康宜诚医疗器材有限公司 | Femoral prosthesis |
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