CN211243912U - Acetabular prosthesis and hip prosthesis - Google Patents
Acetabular prosthesis and hip prosthesis Download PDFInfo
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- CN211243912U CN211243912U CN201921761240.8U CN201921761240U CN211243912U CN 211243912 U CN211243912 U CN 211243912U CN 201921761240 U CN201921761240 U CN 201921761240U CN 211243912 U CN211243912 U CN 211243912U
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- acetabular
- acetabular cup
- lining
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- liner body
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Abstract
The utility model provides an acetabular bone false body and hip joint false body relates to medical instrument technical field, include: the lining cup is in threaded connection with the lining main body, so that the lining main body is screwed into the acetabular cup and is screwed to a correct position, the acetabular cup and the lining main body are fixed by the fixing mechanism, the correct position of the lining main body and the acetabular cup is guaranteed, the technical problems that the lining cannot accurately enter the acetabular cup and is not in the correct position in the acetabular cup in the prior art, the lining is prone to falling off from the lining due to long-time use and is prone to damage due to forced striking in are solved, the lining is accurately entered into the acetabular cup, firm connection between the lining and the acetabular cup is guaranteed, the lining is not prone to damage, and the service life of the lining cup is prolonged.
Description
Technical Field
The utility model belongs to the technical field of the medical instrument technique and specifically relates to a acetabular bone false body and hip joint false body are related to.
Background
The hip joint is a joint connecting the femur and the hip bone of the pelvis of a human body, and plays the most important role when the human walks. When the hip joint is damaged due to disease, trauma and other factors, in order to cure the disease, the focus of infection is removed through an artificial hip joint replacement operation, pain is eliminated, and the activity and the original function of the joint are recovered.
The service life of an artificial hip prosthesis after implantation in the human body depends on several aspects: such as the frictional wear performance of femoral head prosthesis and acetabulum prosthesis, the fixing effect of femoral stem and acetabulum, the fixing effect of lining in the acetabular cup, and the like, the connection and fixation of the lining in the acetabular cup are particularly important under the complex stress condition of the hip joint.
However, in an operation, the liner needs to be installed in the mortar, and medical staff drives the liner into the mortar, so that the liner is prone to being skewed, the position of the liner in the mortar is not correct, the fixing effect is further remarkably reduced, the liner is prone to being separated from the mortar after long-term use, and if the liner is driven by force in an improper time, the locking position of the liner may be broken or severe plastic deformation may occur.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an acetabular bone false body and hip joint false body to having alleviated the unable accurate entering into the acetabular bone of the operation in-process inside lining that exists among the prior art, the position of inside lining in the acetabular bone is just, uses for a long time and leads to the inside lining to drop from the inside lining easily, and squeezes into the technical problem who causes the damage easily by force.
In a first aspect, an acetabular prosthesis comprising: the acetabulum cup, the lining main body and the fixing mechanism;
the acetabular cup is in threaded connection with the liner body;
the fixing mechanism is connected with the acetabular cup and the lining main body respectively and forms a first resistance for avoiding the rotation of the lining main body along a first direction and a second resistance for avoiding the rotation of the lining main body along a second direction, and the first direction is opposite to the second direction.
In an alternative embodiment, the fixing mechanism includes a first positioning groove provided on the surface of the acetabular cup, a second positioning groove provided on the surface of the liner body, and a fixing member interposed between the first positioning groove and the second positioning groove.
In an alternative embodiment, the fixing member is connected with the first positioning groove and the second positioning groove in an interference fit manner.
In an alternative embodiment, a threaded groove is arranged on the inner wall of the acetabular cup, and a threaded strip is arranged on the outer surface of the liner main body;
alternatively, the first and second electrodes may be,
the inner wall of the acetabulum cup is provided with a thread strip, and the outer surface of the lining main body is provided with a thread groove;
the thread strip is connected with the thread groove in a matched mode.
In an alternative embodiment, the thread groove and the thread strip are provided in plurality;
the thread grooves and the thread strips are arranged in a one-to-one correspondence mode.
In an alternative embodiment, the liner body is provided with a holding hole;
the holding hole is used for being connected with a medical appliance, so that the medical appliance drives the lining main body to be screwed into the acetabular cup through the holding hole.
In an alternative embodiment, the holding hole is provided in plurality;
the plurality of holding holes are uniformly arranged along the circumferential direction of the liner body.
In an alternative embodiment, the holding hole may have a cross-sectional shape of any one of a straight shape, a cross shape, and a circular shape.
In an alternative embodiment, a guide projection is provided on the liner body;
the acetabulum cup is provided with a positioning groove, and the guide protrusion is matched and connected with the positioning groove so as to fix the relative position between the acetabulum cup and the lining main body.
In a second aspect, the present invention provides a hip joint prosthesis, including the acetabular prosthesis.
The utility model provides an acetabular bone false body, because set the acetabular cup and the inside lining main part to threaded connection, make the inside lining main part twist soon and enter into the acetabular cup, twist after the correct position soon, use fixed establishment to fix acetabular cup and inside lining main part, guarantee the fixed of inside lining main part and acetabular cup correct position, the unable accurate inside cup that enters into of inside lining among the operation process who has alleviated existence among the prior art, the position of inside lining in the acetabular cup is not just, long-time the use leads to the inside lining to drop easily from the inside lining, and squeeze into the technical problem who causes the damage easily by force, realized entering into the acetabular cup with the inside lining accuracy, guarantee the firm in connection of inside lining and acetabular cup, be difficult for causing the damage, improve life's technological effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic overall structural diagram of an acetabular prosthesis according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an acetabular cup in the acetabular prosthesis according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a liner main body in an acetabular prosthesis according to an embodiment of the present invention.
Icon: 100-acetabular cup; 110-thread groove; 120-positioning grooves; 130-a first positioning groove; 200-a liner body; 210-a thread strip; 220-a guide projection; 230-a second positioning slot; 300-a securing mechanism; 310-a fixture; 400-holding the hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
As shown in fig. 1-3, the present embodiment provides an acetabular prosthesis, including: an acetabular cup 100, a liner body 200, and a securing mechanism 300; the acetabular cup 100 is threadedly connected with the liner body 200; the securing mechanism 300 is coupled to the acetabular cup 100 and the liner body 200, respectively, and forms a first resistance to rotation of the liner body 200 in a first direction and a second resistance to rotation of the liner body 200 in a second direction, with the first and second directions being opposite.
Specifically, the acetabular cup 100 is in threaded connection with the liner body 200, the acetabular cup 100 is fixed to the hip of a human body in the operation process, and after the fixation is completed, the liner body 200 is screwed into the acetabular cup 100, so that the liner body 200 is fixed to the acetabular cup 100, and the liner body 200 and the acetabular cup 100 are assembled quickly.
After the liner body 200 is completely screwed into the acetabular cup 100, in order to prevent the liner body 200 from being unscrewed from the acetabular cup 100, after the liner body 200 is assembled with the acetabular cup 100, the fixing mechanism 300 is assembled on the acetabular cup 100 and the liner body 200, the liner body 200 is clamped in the acetabular cup 100 by blocking the rotation of the liner body 200 by the fixing mechanism 300, the liner body 200 is effectively prevented from being pulled out of the acetabular cup 100, the assembling speed of the acetabular cup 100 and the liner body 200 is effectively improved, and the service lives of the acetabular cup 100 and the liner body 200 are simultaneously prolonged.
The present embodiment provides an acetabular prosthesis, including: an acetabular cup 100, a liner body 200, and a securing mechanism 300; the acetabular cup 100 is threadedly connected with the liner body 200; the securing mechanism 300 is coupled to the acetabular cup 100 and the liner body 200, respectively, and forms a first resistance to rotation of the liner body 200 in a first direction and a second resistance to rotation of the liner body 200 in a second direction, with the first and second directions being opposite. The acetabular cup 100 and the lining main body 200 are in threaded connection, so that the lining main body 200 is screwed into the acetabular cup 100 and is fixed to the correct position by the fixing mechanism 300, the correct position of the lining main body 200 and the acetabular cup 100 is guaranteed to be fixed, the technical problems that the lining cannot accurately enter the acetabular cup and is not in the correct position in the prior art in the operation process, the lining is prone to falling off from the lining due to long-time use and is prone to damage due to forced driving in are solved, the lining is accurately entered into the acetabular cup, firm connection between the lining and the acetabular cup is guaranteed, damage is not prone to occurring, and the service life is prolonged.
In addition to the above embodiments, in an alternative embodiment, the fixing mechanism 300 of the acetabular prosthesis provided in the embodiment includes a first positioning slot 130 disposed on the surface of the acetabular cup 100, a second positioning slot 230 disposed on the surface of the liner main body 200, and a fixing member 310 clamped between the first positioning slot 130 and the second positioning slot 230.
Specifically, a first positioning groove 130 is formed in the surface of the acetabular cup 100, a second positioning groove 230 is formed in the surface of the liner main body 200, the liner main body 200 rotates to enter the acetabular cup 100, after the liner main body is positioned, the first positioning groove 130 in the acetabular cup 100 is connected with the second positioning groove 230 in the liner main body 200, the first positioning groove 130 and the second positioning groove 230 are enclosed to form a clamping groove, the fixing member 310 extends into the clamping groove, the fixing member 310 is used for clamping the first positioning groove 130 and the second positioning groove 230, the acetabular cup 100 and the liner main body 200 are further fixed, and the liner main body 200 is prevented from rotating relative to the acetabular cup 100.
The shapes of the first positioning groove 130 and the second positioning groove 230 may be set to be various, for example, semicircular, rectangular, triangular, etc., the fastening groove enclosed by the semicircular first positioning groove 130 and the second positioning groove 230 is circular, the fixing member 310 is set to be a cylindrical block, the fastening groove enclosed by the rectangular first positioning groove 130 and the second positioning groove 230 is rectangular, the fixing member 310 is set to be a rectangular block, the fastening groove enclosed by the triangular first positioning groove 130 and the second positioning groove 230 is rhombic, the fixing member 310 is set to be a triangular prism block, and the first positioning groove 130, the second positioning groove 230, and the fixing member 310 in different shapes are selected according to actual situations.
In an alternative embodiment, the fixing member 310 is coupled to the first and second positioning grooves 130 and 230 in an interference fit.
Specifically, mounting 310 is connected with first constant head tank 130 and second constant head tank 230 interference fit, inside lining main part 200 screw in acetabular cup 100 back, medical personnel use instrument is squeezed into first constant head tank 130 and second constant head tank 230 with mounting 310, interference fit connects and to place effectively that mounting 310 deviates from in first constant head tank 130 and the second constant head tank 230, guarantee that mounting 310 can not deviate from when using for a long time, improve acetabular cup 100 and inside lining main part 200's firm in connection, and then improve life.
In an alternative embodiment, the inner wall of the acetabular cup 100 is provided with a threaded groove 110, and the outer surface of the liner body 200 is provided with a threaded strip 210; alternatively, the inner wall of the acetabular cup 100 is provided with a thread strip 210, and the outer surface of the liner body 200 is provided with a thread groove 110; the screw thread strip 210 and the screw thread groove 110 are connected in a matching way.
Specifically, a thread groove 110 is formed in the inner wall of the acetabular cup 100, a thread strip 210 is formed in the outer surface of the liner main body 200, the thread groove 110 and the thread strip 210 are arranged correspondingly, in the operation process, after the acetabular cup 100 is fixed, medical staff screw the liner main body 200 into the acetabular cup 100, when the thread strip 210 completely extends into the thread groove 110, the first positioning groove 130 and the second positioning groove 230 are matched to form a clamping groove, the fixing piece 310 extends into the first positioning groove 130 and the second positioning groove 230, and the fixing piece 310 blocks the rotation path of the liner main body 200, so that the acetabular cup 100 and the liner main body 200 are fixed.
In addition, the inner wall of the acetabular cup 100 may be provided with a thread strip 210, and the outer surface of the liner body 200 may be provided with a thread groove 110, so as to ensure that the liner body 200 can be smoothly screwed into the acetabular cup 100.
In an alternative embodiment, the thread groove 110 and the thread bar 210 are each provided in plurality; the thread grooves 110 and the thread strips 210 are arranged in one-to-one correspondence.
Specifically, a plurality of thread grooves 110 and a plurality of thread strips 210 are provided, and the plurality of thread grooves 110 correspond to the plurality of thread strips 210, so as to ensure that the liner main body 200 can be quickly screwed into the acetabular cup 100.
In addition, it should be noted that the number of the surrounding turns of the thread strip 210 and the thread groove 110 is not too large, so as to avoid the prolonged operation time caused by the too long time for the liner body 200 to be screwed into the acetabular cup 100 during the operation, and preferably, the number of the surrounding turns of the thread strip 210 and the thread groove 110 is not more than two.
The acetabular prosthesis provided in this embodiment fixes the liner body 200 in the acetabular cup 100 by extending the fixture 310 into the first positioning groove 130 and the second positioning groove 230 and preventing the liner body 200 from rotating relative to the acetabular cup 100 by the fixture 310; through the setting of thread groove 110 and screw thread strip 210, be convenient for in the acetabular cup 100 with inside lining main part 200 screw in, and the number of turns of thread groove 110 and screw thread strip 210 should not exceed two circles, avoid the screw in number of turns too much, cause unnecessary increase of operation time, improve patient's experience.
On the basis of the above embodiments, in an alternative embodiment, the acetabular prosthesis provided in the embodiment includes a lining main body 200 provided with a holding hole 400; the holding hole 400 is used to connect a medical tool, so that the medical tool drives the liner body 200 to be screwed into the acetabular cup 100 through the holding hole 400.
Specifically, the holding hole 400 is formed in the liner body 200, after the acetabular cup 100 is fixed in the operation process, the liner body 200 is placed in the groove of the acetabular cup 100, a medical worker uses a medical tool to insert into the holding hole 400, the liner body 200 is driven to rotate relative to the acetabular cup 100 through the cooperation of the medical tool and the holding hole 400, the liner body 200 is screwed into the acetabular cup 100, and the assembly of the liner body 200 is completed.
In an alternative embodiment, the holding hole 400 is provided in plurality; the plurality of holding holes 400 are uniformly arranged along the circumferential direction of the liner body 200.
Specifically, the plurality of holding holes 400 are provided, the plurality of holding holes 400 are uniformly provided along the circumferential direction of the liner body 200, the specific number of the holding holes 400 may be two, three, four, and the like, the specific number of the holding holes 400 is selected according to the specific practical situation, and preferably, the specific number of the holding holes 400 is four.
In alternative embodiments, the sectional shape of the holding hole 400 is provided in any one of a straight shape, a cross shape, and a circular shape.
Specifically, the cross-sectional shape of the holding hole 400 may be set in various shapes, for example: the shape of the holding hole 400 is selected in accordance with the shape of the medical device to be used, such as a straight shape, a cross shape, and a circular shape.
In an alternative embodiment, the liner body 200 is provided with a guide protrusion 220; the acetabular cup 100 is provided with a positioning groove 120, and the guide protrusion 220 is cooperatively connected with the positioning groove 120 to fix the relative position between the acetabular cup 100 and the liner body 200.
Specifically, the lining main body 200 is provided with the guide protrusion 220, the acetabular cup 100 is provided with the positioning groove 120 in a matching manner, and after the lining main body 200 is rotated into position, the guide protrusion 220 extends into the positioning groove 120, so that the lining main body 200 is screwed into the acetabular cup 100 to fix the position, the end faces of the lining main body 200 and the acetabular cup 100 are on the same horizontal plane, and the lining main body 200 and the acetabular cup 100 are prevented from being dislocated.
According to the acetabular prosthesis provided by the embodiment, through the arrangement of the holding hole 400, a medical worker can drive the lining main body 200 to rotate relative to the acetabular cup 100, so that the lining main body 200 can be screwed into the acetabular cup 100; by arranging the positioning groove 120 on the acetabular cup 100 and correspondingly arranging the positioning protrusion on the liner main body 200, the positioning protrusion extends into the positioning groove 120 in the screwing process of the liner main body 200, so that the liner main body 200 is positioned.
In a second aspect, the present embodiments provide a hip prosthesis comprising an acetabular prosthesis.
Since the technical effect of the hip joint prosthesis provided by the present embodiment is the same as that of the acetabular prosthesis described above, the detailed description thereof is omitted.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. An acetabular prosthesis, comprising: an acetabular cup (100), a liner body (200), and a fixation mechanism (300);
the acetabular cup (100) is threadedly connected with the liner body (200);
the securing mechanism (300) is coupled to the acetabular cup (100) and the liner body (200), respectively, and forms a first resistance to rotation of the liner body (200) in a first direction and a second resistance to rotation of the liner body (200) in a second direction, the first direction and the second direction being opposite.
2. The acetabular prosthesis of claim 1, wherein the fixation mechanism (300) comprises a first detent (130) disposed on a surface of the acetabular cup (100), a second detent (230) disposed on a surface of the liner body (200), and a fastener (310) captured between the first detent (130) and the second detent (230).
3. The acetabular prosthesis of claim 2, wherein the fixture (310) is in interference fit connection with the first detent (130) and the second detent (230).
4. The acetabular prosthesis according to claim 1, wherein the inner wall of the acetabular cup (100) is provided with a threaded groove (110) and the outer surface of the liner body (200) is provided with a threaded strip (210);
alternatively, the first and second electrodes may be,
the inner wall of the acetabulum cup (100) is provided with a thread strip (210), and the outer surface of the lining main body (200) is provided with a thread groove (110);
the thread strip (210) and the thread groove (110) are in fit connection.
5. The acetabular prosthesis according to claim 4, wherein each of the threaded groove (110) and the threaded strip (210) is provided in plurality;
the thread grooves (110) and the thread strips (210) are arranged in a one-to-one correspondence manner.
6. The acetabular prosthesis according to claim 1, wherein the liner body (200) is provided with a gripping hole (400);
the holding hole (400) is used for being connected with a medical appliance, so that the medical appliance drives the lining main body (200) to be screwed into the acetabular cup (100) through the holding hole (400).
7. The acetabular prosthesis according to claim 6, wherein the holding hole (400) is provided in plurality;
the plurality of holding holes (400) are uniformly arranged in the circumferential direction of the liner body (200).
8. The acetabular prosthesis according to claim 7, wherein the holding hole (400) is provided in any one of a straight shape, a cross shape and a circular shape in cross section.
9. The acetabular prosthesis according to claim 1, wherein the liner body (200) is provided with guide projections (220);
the acetabulum cup (100) is provided with a positioning groove (120), and the guide projection (220) is matched and connected with the positioning groove (120) to fix the relative position between the acetabulum cup (100) and the lining main body (200).
10. A hip joint prosthesis comprising an acetabular prosthesis according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921761240.8U CN211243912U (en) | 2019-10-18 | 2019-10-18 | Acetabular prosthesis and hip prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921761240.8U CN211243912U (en) | 2019-10-18 | 2019-10-18 | Acetabular prosthesis and hip prosthesis |
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| CN211243912U true CN211243912U (en) | 2020-08-14 |
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| CN201921761240.8U Active CN211243912U (en) | 2019-10-18 | 2019-10-18 | Acetabular prosthesis and hip prosthesis |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110584840A (en) * | 2019-10-18 | 2019-12-20 | 北京安颂科技有限公司 | Acetabular prosthesis and hip prosthesis |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110584840A (en) * | 2019-10-18 | 2019-12-20 | 北京安颂科技有限公司 | Acetabular prosthesis and hip prosthesis |
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