CN208710176U - Artificial isthmus prosthese - Google Patents
Artificial isthmus prosthese Download PDFInfo
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- CN208710176U CN208710176U CN201721351728.4U CN201721351728U CN208710176U CN 208710176 U CN208710176 U CN 208710176U CN 201721351728 U CN201721351728 U CN 201721351728U CN 208710176 U CN208710176 U CN 208710176U
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- gorge
- body portion
- isthmus
- artificial
- prosthese
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Abstract
The utility model provides a kind of artificial isthmus prosthese, comprising: gorge body portion and fixed part, gorge body portion are used for the predeterminated position being arranged in femoral bone cavitas medullaris, and gorge body portion has gorge body structure compatible with femoral stem；Fixed part and gorge body portion are detachably connected, and gorge body portion is fixed on predeterminated position.To in the case where the isthmus defect or missing of patient, rebuild isthmus for patient in Replacement of Hip Joint, guarantee that femoral stem is not in sink.Solve the problems, such as that the isthmus defect of patient in existing Replacement of Hip Joint or missing cause femoral stem to be easy.
Description
Technical field
The utility model relates to area of medical devices, in particular to a kind of artificial isthmus prosthese.
Background technique
Replacement of Hip Joint (THA) is 20th century one of most successful surgical operation, it can effectively eliminate joint
Pain rebuilds function of joint and correct deformity, to improve the quality of life of patient.The form of hip lesion is not quite similar,
Especially to the treatment of femoral shaft serious defect patient, it always is one of clinician the most stubborn problem, if processing
Improper, patient can bear catastrophic consequence.
Proximally to distal end thereof, the diameter of femoral bone cavitas medullaris arrives greatly again from big to small.In pulp cavity, to be at diameter minimum
Zero curve, the spongiosa bone segment that Xiang Jin, distal end respectively extend several centimeters are known as the isthmus of femur.In artificial hip joint replacing field,
Isthmus is critically important bony structure, can fix the distal end of artificial femur handle (short handle), prevents the sinking at a specified future date of femoral stem；Gorge
There is also a large amount of cancellous bones in portion, provide condition with the Integrated implant of bion femoral stem to realize.But some patients especially hip
The phenomenon that patient of skeleton animation, bone defect is more serious, often will appear isthmus defect or missing, it is difficult to increase operation
Degree.
In order to solve problem above, the method for doctors is to use the lengthening handle with bone cement, assembly type handle or remote at present
Lock handle is held, although these three handles can improve the isthmus defect of patient or the patient's condition of missing, all not no reconstruction patients
Isthmus, there are the risks that shank body is sunk.
Utility model content
The main purpose of the utility model is to provide a kind of artificial isthmus prostheses, to solve existing artificial hip joint replacing
The problem of isthmus defect of patient or missing cause femoral stem to be easy in art.
To achieve the goals above, the utility model provides a kind of artificial isthmus prosthese, comprising: gorge body portion, for setting
The predeterminated position in femoral bone cavitas medullaris is set, gorge body portion has for gorge body structure compatible with femoral stem；Fixed part, with gorge body
Portion is detachably connected, and gorge body portion is fixed on predeterminated position.
Further, body portion in gorge is tubular construction, along by the direction in the middle part of both ends to the gorge body portion in gorge body portion, in the body portion of gorge
The reduced diameter of wall.
Further, gorge body portion inner wall is rotating graphs, and the bus of rotating graphs is curved line, the extension side of curved line
The axis direction in Xiang Yuxia body portion is identical.
Further, there is anti-skid structure, anti-skid structure with the inner wall of femoral bone cavitas medullaris for being bonded on the outer wall in gorge body portion
To prevent gorge body portion from sliding axially along it.
Further, anti-skid structure is the circular saw of the circumferentially extending along gorge body portion.
Further, circular saw is multilayer, and multi-layer annular sawtooth is arranged along the extending direction interval in gorge body portion.
Further, fixed part is used to be arranged around the circumferential direction of femoral shaft, the outside of femoral bone cavitas medullaris is arranged in.
Further, the first connecting hole is offered in gorge body portion, and the second connecting hole is offered on fixed part；Wherein, manually
Isthmus prosthese further includes fixing bolt, and fixing bolt is threaded through in the second connecting hole and the first connecting hole so that gorge body portion to be fixed on
Predeterminated position.
Further, fixed part includes: muti-piece fixed plate, and muti-piece fixed plate is provided at circumferentially spaced along femoral shaft；Wherein,
Artificial isthmus prosthese further includes multiple fixing bolts, and every piece of fixed plate is connect with gorge body portion by corresponding fixing bolt with by gorge
Body portion is fixed on predeterminated position.
Further, fixed plate is arc panel, fixed plate is used for be arcwall face with the surface of femur dry contact with femur
It is dry to fit.
Using the artificial isthmus prosthese of technical solutions of the utility model, comprising: gorge body portion and fixed part, gorge body portion is for setting
The predeterminated position in femoral bone cavitas medullaris is set, gorge body portion has gorge body structure compatible with femoral stem；Fixed part and gorge body portion can
It releasably connects, gorge body portion is fixed on predeterminated position.Thus in Replacement of Hip Joint, the isthmus defect of patient or scarce
In the case where mistake, isthmus is rebuild for patient, guarantees that femoral stem is not in sink.It solves in existing Replacement of Hip Joint
The problem of isthmus defect or missing of patient cause femoral stem to be easy.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical
Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.
In the accompanying drawings:
Fig. 1 is shown according to mounting structure of the optionally a kind of artificial isthmus prosthese of the utility model embodiment in femoral shaft
It is intended to；
Fig. 2 is according to a kind of optional structural schematic diagram in the gorge body portion of artificial isthmus prosthese of the utility model embodiment；
Fig. 3 is the dress according to optionally a kind of fixed part of artificial isthmus prosthese of the utility model embodiment on femur rod
Distribution structure schematic diagram；
Fig. 4 is according to a kind of optional structural schematic diagram of the fixed part of artificial isthmus prosthese of the utility model embodiment；
And
Fig. 5 is the installation section knot according to optionally a kind of artificial isthmus prosthese of the utility model embodiment in femoral shaft
Structure schematic diagram.
Wherein, the above drawings include the following reference numerals:
10, gorge body portion；11, anti-skid structure；12, the first connecting hole；20, fixed part；21, the second connecting hole；22, fixed
Plate；30, fixing bolt；40, femoral bone cavitas medullaris；50, femoral shaft.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
According to the artificial isthmus prosthese of the utility model embodiment, as shown in Figure 1, comprising: gorge body portion 10 and fixed part 20,
Gorge body portion 10 is used for the predeterminated position being arranged in femoral bone cavitas medullaris 40, and gorge body portion 10 has for gorge compatible with femoral stem body
Structure；Fixed part 20 and gorge body portion 10 are detachably connected, and gorge body portion 10 is fixed on predeterminated position.
Using the artificial isthmus prosthese of technical solutions of the utility model, comprising: gorge body portion 10 and fixed part 20, gorge body portion 10
Predeterminated position for being arranged in femoral bone cavitas medullaris, gorge body portion 10 have gorge body structure compatible with femoral stem；Fixed part 20
It is detachably connected with gorge body portion 10, gorge body portion 10 is fixed on predeterminated position.Thus in Replacement of Hip Joint, patient
Isthmus defect or missing in the case where, for patient rebuild isthmus, guarantee femoral stem be not in sink.It solves existing artificial
The problem of isthmus defect of patient or missing cause femoral stem to be easy in hip replacement.
When it is implemented, gorge body portion 10 is tubular construction, the direction in the middle part of both ends to the gorge body portion 10 by gorge body portion 10,
The reduced diameter of 10 inner wall of gorge body portion is to form gorge body structure compatible with the distal end of femoral stem, i.e., with gorge body structure
Diameter minimum at be zero curve, Xiang Jin, remote both ends respectively extend several centimeters, and the diameter experience of 10 inner wall of gorge body portion is descending to be arrived again
Big process, so that the distal end of femoral stem be fixed.The conical design of gorge body inner structural wall can form cone with type femoral bone end prosthesis and connect
It connects, prevents femoral stem long term from sinking, reduce loosening rate.Specifically, the inner wall in gorge body portion 10 is rotating graphs, rotating graphs
Bus is curved line, and the extending direction of curved line is identical as the axis direction in gorge body portion 10.
In order to gorge body portion 10 is preferably fixed, prevent gorge body portion 10 along the axial movement of femoral bone cavitas medullaris 40, further,
As depicted in figs. 1 and 2, anti-skid structure 11 is provided on the outer wall in gorge body portion 10, anti-skid structure 11 is the week along gorge body portion 10
To the circular saw of extension, circular saw is multilayer, and multi-layer annular sawtooth is arranged along the extending direction interval in gorge body portion 10, annular
Sawtooth can fit closely to block in gorge body portion 10 with the inner wall of femoral bone cavitas medullaris, to prevent gorge body portion 10 from sinking.
As shown in figure 3, fixed part 20 is on the outer wall that femoral shaft is arranged in the circumferential direction of femoral shaft 50, to be located at femur marrow
The outside of chamber 40.As shown in Figure 1, Figure 2 and shown in Fig. 5, the first connecting hole 12 is offered in gorge body portion 10, and the is offered on fixed part 20
Two connecting holes 21；Wherein, artificial isthmus prosthese further includes fixing bolt 30, and fixing bolt 30 is threaded through the second connecting hole 21 and
Gorge body portion 10 is fixed on predeterminated position in one connecting hole 12.If it is bad to encounter femur sclerotin, multiple fixations can be used
Portion 20 is mounted side by side along the axial direction of femoral shaft, to play the role of protecting femoral shaft.It can be separation type that fixed part 20, which has,
It can be integrated type, fixed part 20 can prevent femur from cleaving in addition to that can play the role of fixed gorge body portion 10, while again.
Further, as shown in Figures 3 to 5, fixed part 20 includes: muti-piece fixed plate 22, and muti-piece fixed plate 22 is along femur
Dry 50 are provided at circumferentially spaced；Fixing bolt 30 be it is multiple, every piece of fixed plate 22 passes through corresponding fixing bolt 30 and gorge body portion
10 connections are to be fixed on predeterminated position for gorge body portion 10.
For the stability for enabling the outer wall of fixed plate and femoral shaft to be adjacent to improve fixed, further, fixed plate
22 be arc panel, and the surface that fixed plate 22 is used to contact with femoral shaft 50 is arcwall face to fit with femoral shaft 50, so as to
It enough circularizes and femoral shaft is enclosed and fixes gorge body portion 10.
The artificial isthmus prosthese of the utility model embodiment selects diameter suitable gorge body portion in the course of surgery first
10, and gorge body portion 10 is implanted to the predeterminated position in the femoral bone cavitas medullaris of femoral shaft；Then gorge body portion is determined using measuring tool
The position of the first connecting hole 12 on 10；Then the suitable fixed part 20 of diameter is selected, and guarantees the first connecting hole 12 and second
Gorge body portion 10 and the fixing bolt 30 of fixed part 20 with one heart, are finally connected and fixed by connecting hole 21.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of artificial isthmus prosthese characterized by comprising
Gorge body portion (10), for the predeterminated position that be arranged in femoral bone cavitas medullaris (40), gorge body portion (10) with for stock
The compatible gorge body structure of bone handle；
Fixed part (20), it is detachably connected with gorge body portion (10), gorge body portion (10) is fixed on described default
Position.
2. artificial isthmus prosthese according to claim 1, which is characterized in that gorge body portion (10) is tubular construction, edge
By the direction in the middle part of the both ends to gorge body portion (10) in gorge body portion (10), the diameter of gorge body portion (10) inner wall is gradually
It reduces.
3. artificial isthmus prosthese according to claim 2, which is characterized in that gorge body portion (10) inner wall is rotation figure
Shape, the bus of the rotating graphs are curved line, the axis direction of the extending direction of the curved line and gorge body portion (10)
It is identical.
4. artificial isthmus prosthese according to claim 2, which is characterized in that have on the outer wall in gorge body portion (10) anti-
Slipped Clove Hitch structure (11), the anti-skid structure (11) with the inner wall of the femoral bone cavitas medullaris (40) for being bonded to prevent gorge body portion
(10) it slides axially along it.
5. artificial isthmus prosthese according to claim 4, which is characterized in that the anti-skid structure (11) is along the gorge body
The circular saw of the circumferentially extending in portion (10).
6. artificial isthmus prosthese according to claim 5, which is characterized in that the circular saw is multilayer, described in multilayer
Circular saw is arranged along the extending direction interval in gorge body portion (10).
7. artificial isthmus prosthese according to claim 1, which is characterized in that the fixed part (20) is used for around femoral shaft
(50) circumferential setting, to be arranged in the outside of the femoral bone cavitas medullaris (40).
8. artificial isthmus prosthese according to claim 7, which is characterized in that offer the first company in gorge body portion (10)
It connects hole (12), offers the second connecting hole (21) on the fixed part (20)；
Wherein, the artificial isthmus prosthese further includes fixing bolt (30), and the fixing bolt (30) is threaded through the second connecting hole
(21) and first connecting hole (12) is interior gorge body portion (10) is fixed on the predeterminated position.
9. artificial isthmus prosthese according to claim 7, which is characterized in that the fixed part (20) includes:
Muti-piece fixed plate (22), fixed plate (22) being provided at circumferentially spaced along the femoral shaft (50) described in muti-piece；
Wherein, the artificial isthmus prosthese further includes multiple fixing bolts (30), and every piece of fixed plate (22) passes through corresponding
The fixing bolt (30) is connect so that gorge body portion (10) is fixed on the predeterminated position with gorge body portion (10).
10. artificial isthmus prosthese according to claim 9, which is characterized in that the fixed plate (22) is arc panel, described
The surface that fixed plate (22) is used to contact with the femoral shaft (50) is arcwall face to fit with the femoral shaft (50).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721351728.4U CN208710176U (en) | 2017-10-19 | 2017-10-19 | Artificial isthmus prosthese |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721351728.4U CN208710176U (en) | 2017-10-19 | 2017-10-19 | Artificial isthmus prosthese |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208710176U true CN208710176U (en) | 2019-04-09 |
Family
ID=65967555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721351728.4U Active CN208710176U (en) | 2017-10-19 | 2017-10-19 | Artificial isthmus prosthese |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208710176U (en) |
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2017
- 2017-10-19 CN CN201721351728.4U patent/CN208710176U/en active Active
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