CN214967162U - Hip joint femoral stem - Google Patents
Hip joint femoral stem Download PDFInfo
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- CN214967162U CN214967162U CN202120350214.7U CN202120350214U CN214967162U CN 214967162 U CN214967162 U CN 214967162U CN 202120350214 U CN202120350214 U CN 202120350214U CN 214967162 U CN214967162 U CN 214967162U
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- femoral stem
- stem
- femoral
- central axis
- fixing hole
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Abstract
The utility model provides a hip joint femoral stem, a femoral stem pyramid part, a femoral stem neck part and a femoral stem body; the femoral stem taper part is connected with the femoral stem body through the femoral stem neck part, wherein the included angle between the central axis corresponding to the femoral stem body and the central axis corresponding to the femoral stem neck part is 125-145 degrees; the top of the femoral stem body is provided with a fixing hole used for connecting a femoral stem driver, the fixing hole is matched with the femoral stem driver, and the included angle formed by the central axis of the fixing hole and the central axis of the femoral stem body ranges from 0.1 degrees to 79 degrees. Through the axis of femoral stem handle body top fixed orifices with the contained angle design that the axis of femoral stem handle body formed, guarantee to implant convenient more high-efficient of operation process, guarantee that the implantation of femoral stem false body is more accurate.
Description
Technical Field
The utility model relates to the technical field of medical machinery, in particular to a hip joint femoral stem.
Background
In the medical field, artificial hip replacement is widely used as a clinical treatment. The artificial hip joint replacement is mainly to implant artificial hip joint prosthesis into the position of the hip joint of a human body through a hip joint installation device, thereby achieving the purpose of eliminating the pain of a patient. The hip joint prosthesis is used for replacing a hip joint of a human body, and the operation process comprises the following steps: the hip joint femoral stem is inserted into the femoral bone marrow cavity and is provided with the ball head and the acetabular cup in the acetabulum, so that the function of the hip joint is realized.
In the prior art, the fixing holes of the artificial hip joint femoral stem and the femoral stem driver have no special requirements and are on the same straight line.
However, when the artificial hip joint femoral stem is implanted, the femoral stem driver is easy to cause inaccurate implantation of the femoral stem prosthesis.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention has been made to provide a hip stem that overcomes or at least partially solves the above problems.
The utility model discloses a hip joint femoral stem, which comprises a femoral stem pyramid part, a femoral stem neck part and a femoral stem body;
the femoral stem taper part is connected with the femoral stem body through the femoral stem neck part, and a preset included angle is formed between the central axis corresponding to the femoral stem body and the central axis corresponding to the femoral stem neck part;
the top of the femoral stem body is provided with a fixing hole used for connecting a femoral stem driver, the fixing hole is matched with the femoral stem driver, and the included angle formed by the central axis of the fixing hole and the central axis of the femoral stem body ranges from 0.1 degrees to 79 degrees.
Preferably, the end of the femoral stem handle body close to the femoral stem neck is larger than the end far away from the femoral stem neck.
Preferably, the femoral stem taper and the femoral stem neck are transitionally connected by an arc.
Preferably, the preset included angle is 125-145 degrees.
Preferably, the femoral taper is conical.
Preferably, the outer surface of the femoral stem handle body is sprayed with a titanium coating and/or a hydroxyapatite coating and/or a sand coating.
The application has the following advantages:
in an embodiment of the present application, the femoral stem neck portion includes a femoral stem taper portion, a femoral stem neck portion, and a femoral stem body; the femoral stem taper part is connected with the femoral stem body through the femoral stem neck part, and a preset angle is formed between the central axis of the femoral stem body and the central axis of the femoral stem neck part; the top of the femoral stem body is provided with a fixing hole used for connecting a femoral stem driver, the fixing hole is matched with the femoral stem driver, and the included angle formed by the central axis of the fixing hole and the central axis of the femoral stem body ranges from 0.1 degrees to 79 degrees. Through the axis of femoral stem handle body top fixed orifices with the contained angle design that the axis of femoral stem handle body formed, guarantee to implant convenient more high-efficient of operation process, guarantee that the implantation of femoral stem false body is more accurate.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings needed to be used in the description of the present application will be briefly introduced below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
Fig. 1 is a schematic structural view of an embodiment of a hip stem of the present invention;
fig. 2 is a schematic side view of a hip stem according to an embodiment of the present invention;
1. a femoral stem taper; 2. a femoral stem neck; 3. a femoral stem body; 4. and (7) fixing holes.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, the present application is described in further detail with reference to the accompanying drawings and the detailed description. It is to be understood that the embodiments described are only a few embodiments of the present application and not all 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 application.
It should be noted that, in any embodiment of the present invention, a hip stem is used to reconstruct a hip joint structure by inserting the hip stem into a femoral medullary cavity in a hip replacement operation.
Referring to fig. 1, a schematic structural diagram of a hip stem according to an embodiment of the present application is shown, and specifically includes the following structures: comprises a femoral stem cone part 1, a femoral stem neck part 2 and a femoral stem body 3; the femoral stem taper part 1 is connected with the femoral stem body 3 through the femoral stem neck part 2, and a preset included angle is formed between a central axis corresponding to the femoral stem body 3 and a central axis corresponding to the femoral stem neck part 2; the top of the femoral stem body 3 is provided with a fixing hole 4 for connecting a femoral stem driver, the fixing hole 4 is matched with the femoral stem driver, and the included angle formed by the central axis of the fixing hole 4 and the central axis of the femoral stem body ranges from 0.1 degrees to 79 degrees.
In the embodiment of the present application, the femoral stem taper portion 1, the femoral stem neck portion 2, and the femoral stem shaft portion 3; the femoral stem taper part 1 is connected with the femoral stem body 3 through the femoral stem neck part 2, and a preset included angle is formed between a central axis corresponding to the femoral stem body 3 and a central axis corresponding to the femoral stem neck part 2; the top of the femoral stem body 3 is provided with a fixing hole 4 for connecting a femoral stem driver, the fixing hole 4 is matched with the femoral stem driver, and the included angle formed by the central axis of the fixing hole 4 and the central axis of the femoral stem body ranges from 0.1 degrees to 79 degrees. Through the axis in 4 fixed holes in 3 tops of femoral stem handle body with the contained angle design that the axis of femoral stem handle body 3 formed, the angle is an, guarantees to implant convenient more high-efficient of operation process, guarantees that the implantation state of femoral stem false body is more accurate.
Next, a hip stem in the present exemplary embodiment will be further described.
In the embodiment of the application, the femoral stem comprises a femoral stem conical part 1, a femoral stem neck part 2 and a femoral stem body 3; the femoral stem taper part 1 is connected with the femoral stem body 3 through the femoral stem neck part 2, and a preset angle is formed between the central axis of the femoral stem body 3 and the central axis of the femoral stem neck part 2;
in a specific embodiment, the angle formed by the central axis of the femoral stem neck 2 and the transverse axis of the femoral stem shoulder is 125-145 degrees, and specifically may be 125 degrees, 135 degrees or 145 degrees; the angle formed by the central axis of the neck part 2 of the femoral stem and the central axis of the bottom part of the femoral stem is 125-145 degrees, and specifically can be 125 degrees, 135 degrees or 145 degrees.
In a specific embodiment, the top of the femoral stem handle body 3 is provided with a fixing hole 4 for connecting a femoral stem driver, the fixing hole 4 is matched with the femoral stem driver, and an included angle formed by a central axis of the fixing hole 4 and a central axis of the femoral stem handle body ranges from 0.1 degrees to 79 degrees.
In a specific embodiment, the femoral stem taper portion 1 and the femoral stem neck portion 2 are transitionally connected through an arc, and the femoral stem taper portion 1 is conical.
In a specific embodiment, the end of the femoral stem shaft 3 close to the femoral stem neck 2 is larger than the end far away from the femoral stem neck 2.
In a specific embodiment, the outer surface of the femoral stem handle body 3 is sprayed with a titanium coating and/or a hydroxyapatite coating and/or a sand coating, and the titanium coating is sprayed on the surface, so that the biocompatibility of the femoral stem is enhanced.
Referring to fig. 2, a schematic side structure diagram of an embodiment of the hip femoral stem of the present invention is shown, specifically the following structure: the femoral stem is characterized in that the bottom of the femoral stem is conical, the conical shape is used for reducing resistance when the femoral stem is implanted, and the conical shape is favorable for the femoral stem to enter in the femoral stem implantation process.
It should be noted that the peripheral wall of the femoral stem shaft 3 is provided with a lateral groove for increasing the contact area with the bone. The transverse grooves can increase the contact area of the femoral stem with the bone in the femoral medullary cavity, and can convert the annular pressure of the femoral stem originally formed in the medullary cavity into longitudinal pressure, so that the growth of the bone is better stimulated, and the femoral stem is more stable and durable.
It should be noted that, the peripheral wall of the bottom of the femoral stem handle body 3 is provided with a longitudinal groove for increasing the contact area with the bone, the longitudinal groove increases the contact area of the femoral stem with the bone in the femoral medullary cavity, stimulates the growth of the bone, and can effectively improve the dislocation problem in the use process caused by the axial rotation of the femoral stem relative to the femur, so that the femoral stem is more stable and durable.
The lowest part of the bottom of the femoral stem handle body 3 is spherical, so that the resistance of the femoral stem during implantation can be reduced, and the damage to a medullary cavity is reduced; effectively reducing the stress concentration problem at the bottom when the femoral stem is loaded and relieving the over stimulation to the bone.
In one embodiment, the femoral stem taper 1, femoral stem neck 2, and femoral stem body 3; the femoral stem taper part 1 is connected with the femoral stem body 3 through the femoral stem neck part 2, and a preset angle is formed between the central axis of the femoral stem body 3 and the central axis of the femoral stem neck part 2; the top of the femoral stem handle body 3 is provided with a fixing hole 4 for connecting a femoral stem driver, the fixing hole 4 is matched with the femoral stem driver, an included angle formed by the central axis of the fixing hole 4 and the central axis of the femoral stem handle body is a, and the value range of the angle a is 0.1-79 degrees.
In one embodiment of the present application, the femoral stem taper portion 1, the femoral stem neck portion 2 and the femoral stem body 3; the femoral stem pyramid part 1 is connected with the femoral stem body 3 through the femoral stem neck part 2, and a preset included angle of 125 degrees is formed between the central axis corresponding to the femoral stem body 3 and the central axis corresponding to the femoral stem neck part 2; the top of the femoral stem handle body 3 is provided with a fixing hole 4 for connecting a femoral stem driver, the fixing hole 4 is matched with the femoral stem driver, and the included angle formed by the central axis of the fixing hole 4 and the central axis of the femoral stem handle body is 0.1 degrees.
In one embodiment of the present application, the femoral stem taper portion 1, the femoral stem neck portion 2 and the femoral stem body 3; the femoral stem taper part 1 is connected with the femoral stem body 3 through the femoral stem neck part 2, and a preset included angle is formed between the central axis corresponding to the femoral stem body 3 and the central axis corresponding to the femoral stem neck part 2 and is 135 degrees; the top of the femoral stem handle body 3 is provided with a fixing hole 4 for connecting a femoral stem driver, the fixing hole 4 is matched with the femoral stem driver, and the included angle formed by the central axis of the fixing hole 4 and the central axis of the femoral stem handle body is 45 degrees.
In one embodiment of the present application, the femoral stem taper portion 1, the femoral stem neck portion 2 and the femoral stem body 3; the femoral stem taper part 1 is connected with the femoral stem body 3 through the femoral stem neck part 2, and a preset included angle of 145 degrees is formed between the central axis corresponding to the femoral stem body 3 and the central axis corresponding to the femoral stem neck part 2; the top of the femoral stem handle body 3 is provided with a fixing hole 4 for connecting a femoral stem driver, the fixing hole 4 is matched with the femoral stem driver, and the included angle formed by the central axis of the fixing hole 4 and the central axis of the femoral stem handle body is 79 degrees.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The detailed description is given above on the femoral stem with the inclination angle provided by the utility model, and the specific examples are applied herein to explain the principle and the implementation manner of the utility model, and the description of the above embodiments is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, and in summary, the content of the present specification should not be understood as the limitation of the present invention.
Claims (6)
1. A hip joint femoral stem is used for reconstructing a hip joint in an artificial hip joint replacement operation and is characterized by comprising a femoral stem cone part, a femoral stem neck part and a femoral stem body;
the femoral stem taper part is connected with the femoral stem body through the femoral stem neck part, and a preset included angle is formed between a central axis corresponding to the femoral stem body and a central axis corresponding to the femoral stem neck part;
the top of the femoral stem body is provided with a fixing hole used for connecting a femoral stem driver, the fixing hole is matched with the femoral stem driver, and the included angle formed by the central axis of the fixing hole and the central axis of the femoral stem body ranges from 0.1 degrees to 79 degrees.
2. The hip stem according to claim 1, wherein the stem body is larger at the end closer to the stem neck than at the end further away from the stem neck.
3. The hip stem according to claim 1, wherein the stem taper and the stem neck are connected by a circular arc transition.
4. The hip stem according to claim 1, wherein the predetermined included angle is 125 ° to 145 °.
5. The hip stem according to claim 1, wherein the femoral stem taper is conical.
6. The hip-joint femoral stem according to any one of claims 1 to 5, wherein the outer surface of the stem body of the femoral stem is coated with a titanium coating and/or a hydroxyapatite coating and/or a sand coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120350214.7U CN214967162U (en) | 2021-02-03 | 2021-02-03 | Hip joint femoral stem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120350214.7U CN214967162U (en) | 2021-02-03 | 2021-02-03 | Hip joint femoral stem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214967162U true CN214967162U (en) | 2021-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120350214.7U Active CN214967162U (en) | 2021-02-03 | 2021-02-03 | Hip joint femoral stem |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214967162U (en) |
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2021
- 2021-02-03 CN CN202120350214.7U patent/CN214967162U/en active Active
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