CN209347145U - Myelocavity file - Google Patents
Myelocavity file Download PDFInfo
- Publication number
- CN209347145U CN209347145U CN201821979347.5U CN201821979347U CN209347145U CN 209347145 U CN209347145 U CN 209347145U CN 201821979347 U CN201821979347 U CN 201821979347U CN 209347145 U CN209347145 U CN 209347145U
- Authority
- CN
- China
- Prior art keywords
- myelocavity file
- lateral surface
- medial surface
- myelocavity
- file
- 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.)
- Active
Links
Abstract
The utility model discloses Myelocavity files, it include: wherein, the close end includes the first medial surface and the first lateral surface being oppositely arranged, and first medial surface and first lateral surface are globoidal structure, the joint face of first medial surface and first lateral surface is two symmetrical first contralateral sides, transverse concave groove is offered on first medial surface and first lateral surface, oblique groove is offered on first contralateral sides, and four sides tooth-shape structure is set in the oblique groove；Around setting annular groove cutting edge on the middle rear end；The distal portion includes the transition part and rotating part being sequentially connected, and the rotating part is cylindrical-shaped structure.
Description
Technical field
The utility model relates to hip replacement surgery field of tool, and in particular to Myelocavity file.
Background technique
The advantages of structure of currently marketed Myelocavity file is mostly the downward ring channel structures of cutting edge, the structure is can
The a large amount of cancellous bone of filing, the shape of femoral bone cavitas medullaris is consistent with the shape of body after guarantee filing, for bone cement row femoral stem
For prosthese, this structure is suitable.For bion femoral stem fixed for bion femoral stem, especially proximal end, this
Kind structure cannot play the best use.The reason is that the fixed bion femoral stem in proximal end is long mainly by the bone of femur handle proximal end coating
Enter to be fixed, and the premise of Bone Ingrowth is cancellous bone bone amount abundance, and forms press-fit relationship with femur handle proximal end, if
There is the induction of spongiosa bone scraps, the progress of Bone Ingrowth can be accelerated.
For bion femoral stem fixed for proximal end, best fixed form is that proximal end is closely solid between cancellous bone
It is fixed, distal end loose fit, to reduce the stress-shielding effect caused by being greater than the elasticity modulus of bone because of femoral stem elasticity modulus, thus
Mitigate thigh pain.Existing Myelocavity file does not consider this point mostly in the market, after leading to Myelocavity file filing, femoral stem and pulp cavity it
Between either proximal end still distally be interference fit.
Angle between human femur under loading neck and the line of interior outside condyle of femur is called top rake, in the process of filing pulp cavity
In, if top rake control is improper, it be easy to cause patient activity's degree limited.The cross sectional shape of currently marketed Myelocavity file distal end
It is mostly rectangle or trapezoidal, what this will lead to that the initial stage that Myelocavity file is contacted with femoral bone cavitas medullaris just secures Myelocavity file squeezes into direction,
Later period is difficult adjustment direction again.
Utility model content
The utility model has designed and developed Myelocavity file, the purpose of this utility model first is that by the way that ring is arranged in middle rear end
Groove cutting sword and proximal end setting four sides tooth-shape structure to solve can near end of thighbone it is maximum retain cancellous bone bone
Amount makes the problem of distal end of proximal end fixed femoral stem is with femoral bone cavitas medullaris formation loose fit.
The two of the purpose of this utility model by by distal portion be set as cylindrical shape structure to solve Myelocavity file with
The problem of initial stage of pulp cavity contact can freely adjust the angle.
Technical solution provided by the utility model are as follows:
Myelocavity file, including sequentially connected close end, middle rear end and distal portion；
Wherein, the close end includes the first medial surface and the first lateral surface being oppositely arranged, and on the inside of described first
Face and first lateral surface are globoidal structure, and the joint face of first medial surface and first lateral surface is two symmetrical
The first contralateral sides, transverse concave groove, first opposite side are offered on first medial surface and first lateral surface
Oblique groove is offered on side, and four sides tooth-shape structure is set in the oblique groove；
Around setting annular groove cutting edge on the middle rear end；And
The distal portion includes the transition part and rotating part being sequentially connected, and the rotating part is cylindrical-shaped structure.
Preferably, the middle rear end includes the second medial surface and the second lateral surface being oppositely arranged, in described second
The joint face of side and second lateral surface is two symmetrical second contralateral sides, around second medial surface, described
Annular groove cutting edge is arranged in second lateral surface and second contralateral sides.
Preferably, further includes: handle connector is fixedly mounted at the top of the close end, taps hand for connecting
Handle.
Preferably, the upper section of the transition part is trapezoid cross section, for the lower section transition with the middle rear end
Connection；And
The lower section of the transition part is circular cross-section, is connect for the upper section transition with the rotating part.
Preferably, the transverse concave groove uniform parallel arrangement；And
The oblique groove uniform parallel arrangement.
Preferably, the close end length is 60~70mm.
Preferably, the middle rear end length is 18~70mm.
Preferably, the distal portion length is 35~39mm；
Wherein, the length of the transition part is 18~20mm, and the length of the rotating part is 17~19mm.
Preferably, the cross-sectional periphery radius of the rotating part in the distal portion is 8~12mm.
Preferably, the Myelocavity file is made of stainless steel material.
The utility model compared with prior art possessed by the utility model has the advantages that
1, compared with conventional Myelocavity file, the Myelocavity file that this patent is related to can retain near end of thighbone cancellous bone to greatest extent
Bone amount, be conducive to fixation and the Bone Ingrowth of femoral stem；
2, compared with conventional Myelocavity file, the spongiosa bone scraps that the Myelocavity file filing that this patent is related to is fallen are smaller, can induce
Bone Ingrowth of the cancellous bone on femur handle proximal end coating；
3, compared with conventional Myelocavity file, the Myelocavity file posterior segment annular groove cutting edge that this patent is related to being capable of the more bone of filing
Amount makes the distal end of proximal end fixed femoral stem form loose fit with femoral bone cavitas medullaris.To reduce stress-shielding effect, thigh is reduced
The probability that pain occurs；
4, compared with conventional Myelocavity file, the Myelocavity file bottom that this patent is related to is column, can be connect in Myelocavity file and pulp cavity
The initial stage of touching freely adjusts the angle, to meet the requirement of patient femur's physiology top rake.
Detailed description of the invention
Fig. 1 is the main view of Myelocavity file described in the utility model.
Fig. 2 is the left view of Myelocavity file described in the utility model.
Fig. 3 is the lateral surface three-dimensional structure diagram of Myelocavity file described in the utility model.
Fig. 4 is the medial surface three-dimensional structure diagram of Myelocavity file described in the utility model.
Fig. 5 is the enlarged drawing in Fig. 4 at A.
Specific embodiment
The following describes the utility model in further detail with reference to the accompanying drawings, to enable those skilled in the art referring to explanation
Book text can be implemented accordingly.
As shown in Fig. 1~5, Myelocavity file is a kind of hip replacement surgery tool, by Myelocavity file by femoral myelocavity file
After being whittled into type, implanted femur handle prosthese, the working principle of Myelocavity file is to be cut after by percussion active force using the cutting edge on body
The cancellous bone in femoral bone cavitas medullaris is cut, Myelocavity file provided by the utility model is made of stainless steel material, the main structure of Myelocavity file
Including sequentially connected close end 110, middle rear end 120 and distal portion 130；Wherein, close end 110 includes the be oppositely arranged
One medial surface 110a and the first lateral surface 110b, and the first medial surface 110a and the first lateral surface 110b is globoidal structure, the
The joint face of one medial surface 110a and the first lateral surface 110b are two symmetrical first contralateral sides 110c, in the first medial surface
Transverse concave groove is offered on 110a and the first lateral surface 110b, offers oblique groove on the first contralateral sides 110c, and
Four sides tooth-shape structure 111 is set in oblique groove；Around setting annular groove cutting edge on middle rear end 120；Distal portion 130 include according to
Secondary connected transition part 131 and rotating part 132, and rotating part 132 is cylindrical-shaped structure.
In another embodiment, middle rear end 120 includes the second medial surface 120a and the second lateral surface being oppositely arranged
120b, the second medial surface 120a and the joint face in the second outside face 120b are two symmetrical second contralateral sides 120c, are surround
Annular groove cutting edge is arranged in second medial surface 120a, the second lateral surface 120b and the second contralateral sides 120c.
In another embodiment, further includes: handle connector 200 is fixedly mounted on 110 top of close end, is used for
Connection taps handle.
In another embodiment, the upper section of transition part 131 is trapezoidal, for the lower section mistake with middle rear end 120
Cross connection；The lower section of transition part 131 is circular cross-section, is connect for the upper section transition with rotating part 132.
In another embodiment, transverse concave groove uniform parallel is arranged, oblique groove uniform parallel arrangement.
In another embodiment, 110 length of close end is 60~70mm, and middle 120 length of rear end is 18~70mm, far
130 length of end is 35~39mm；Wherein, the length of the transition part 131 of distal portion 130 is 18~20mm, the length of rotating part 132
Degree is 17~19mm, and the cross-sectional periphery radius of the rotating part 132 in distal portion 130 is 8~12mm.
When the working principle of the utility model includes: hip replacement surgery, Myelocavity file passes through handle connector and handle
Myelocavity file is squeezed into pulp cavity by tapping handle by connection, thus by pulp cavity fashion into and type femoral bone end prosthesis relative to shape,
The initial stage that Myelocavity file is contacted with femoral bone cavitas medullaris since the rotating part of Myelocavity file distal portion is column, and does not have tooth, can be free
Rotation, adjusts and Myelocavity file is squeezed into pulp cavity after leaning forward angular direction, during Myelocavity file is driven into pulp cavity, middle rear end ring
Groove cutting sword can the more bone amount of filing, so that the distal end of close end fixed femoral stem and femoral bone cavitas medullaris is formed loose fit,
During Myelocavity file is driven into pulp cavity, proximal end four sides tooth-shape structure in filing femoral bone cavitas medullaris, can filing fall a part of pine
Matter bone, but can also retain a part of bone amount simultaneously, so that the close end of type femoral bone end prosthesis is formed the same of interference fit with femoral bone cavitas medullaris
When retain bone amount to greatest extent, promote Bone Ingrowth, the cancellous bone chip shapes fallen by four sides tooth-shape structure filing are smaller, can
Induce cancellous bone in the Bone Ingrowth of close end fixed femur handle proximal end.
Test example
Firstly, randomly select 5 same specifications the utility model relates to Myelocavity file and its corresponding type femoral bone end prosthesis, with
The common Myelocavity file and its corresponding type femoral bone end prosthesis, coding rule of machine 5 same specifications of selection are as shown in table 1:
Table 1 specimen coding rule
Then, prepare 10, foam vacation bone, 250ml graduated cylinder, tensile testing machine and auxiliary instrument, including Myelocavity file handle
Hand, hammer, the fixture of fixed foam vacation bone, femoral stem handle.
Finally, being tested, include the following steps:
With foam bone fixture fixed foam bone, connect the utility model relates to Myelocavity file and Myelocavity file handle, by this reality
The femoral bone cavitas medullaris of foam bone is driven into the novel Myelocavity file being related to, it is ensured that the position consistency that each Myelocavity file is squeezed into extracts marrow
Chamber file.
Femoral stem and femoral stem handle are installed, prosthese is numbered and squeezes into ready femoral bone cavitas medullaris for J1-J5 femoral stem,
Ensure the position consistency of each femoral stem implantation.
The threaded hole for connecting tensile testing machine and femoral stem shoulder vertically extracts type femoral bone end prosthesis, records peak pullout load.
Similarly, with common Myelocavity file prepare femoral bone cavitas medullaris, prosthese is numbered be driven into for J6-J10 femoral stem it is ready
Femoral bone cavitas medullaris measures peak pullout load.
The pulp cavity for rinsing 10 foam bones, injects pure water in pulp cavity, and measuring every foam bone with graduated cylinder can carry
Pure water volume；Experimental result is as shown in table 2, and compared with traditional Myelocavity file, the Myelocavity file that this patent is related to can retain
More femoral bone cavitas medullaris bone amount, and increase the fixing intensity of type femoral bone end prosthesis.
2 test result of table
It is not only in the description and the implementation although the embodiments of the present invention have been disclosed as above
Listed utilization, it can be applied to various fields suitable for the present invention completely, for those skilled in the art,
Other modifications may be easily implemented, therefore without departing from the general concept defined in the claims and the equivalent scope, this reality
It is not limited to specific details and legend shown and described herein with novel.
Claims (10)
1. Myelocavity file, which is characterized in that including sequentially connected close end, middle rear end and distal portion；
Wherein, the close end includes the first medial surface and the first lateral surface being oppositely arranged, and first medial surface and
First lateral surface is globoidal structure, and the joint face of first medial surface and first lateral surface is two symmetrical the
One contralateral sides offer transverse concave groove, first contralateral sides on first medial surface and first lateral surface
On offer oblique groove, and in the oblique groove be arranged four sides tooth-shape structure；
Around setting annular groove cutting edge on the middle rear end；And
The distal portion includes the transition part and rotating part being sequentially connected, and the rotating part is cylindrical-shaped structure.
2. Myelocavity file as described in claim 1, which is characterized in that the middle rear end includes the second medial surface being oppositely arranged
With the second lateral surface, the joint face of second medial surface and second lateral surface is two symmetrical second contralateral sides,
Around second medial surface, second lateral surface and second contralateral sides, annular groove cutting edge is set.
3. Myelocavity file as claimed in claim 2, which is characterized in that further include: handle connector is fixedly mounted on described close
End top taps handle for connecting.
4. Myelocavity file as claimed in claim 3, which is characterized in that the upper section of the transition part be trapezoid cross section, for
The lower section transition of the middle rear end connects；And
The lower section of the transition part is circular cross-section, is connect for the upper section transition with the rotating part.
5. such as Myelocavity file of any of claims 1-4, which is characterized in that the transverse concave groove uniform parallel arrangement；
And
The oblique groove uniform parallel arrangement.
6. Myelocavity file as claimed in claim 5, which is characterized in that the close end length is 60~70mm.
7. Myelocavity file as claimed in claim 6, which is characterized in that the middle rear end length is 18~70mm.
8. Myelocavity file as claimed in claim 7, which is characterized in that the distal portion length is 35~39mm；
Wherein, the length of the transition part is 18~20mm, and the length of the rotating part is 17~19mm.
9. Myelocavity file as claimed in claim 8, which is characterized in that the cross-sectional periphery radius of the rotating part in the distal portion is
8~12mm.
10. the Myelocavity file as described in any one of claim 6-9, which is characterized in that the Myelocavity file is by stainless steel material system
At.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821979347.5U CN209347145U (en) | 2018-11-28 | 2018-11-28 | Myelocavity file |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821979347.5U CN209347145U (en) | 2018-11-28 | 2018-11-28 | Myelocavity file |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209347145U true CN209347145U (en) | 2019-09-06 |
Family
ID=67784494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821979347.5U Active CN209347145U (en) | 2018-11-28 | 2018-11-28 | Myelocavity file |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209347145U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113855151A (en) * | 2021-09-09 | 2021-12-31 | 苏州市康力骨科器械有限公司 | Medullary cavity file of finger joint fusion device |
-
2018
- 2018-11-28 CN CN201821979347.5U patent/CN209347145U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113855151A (en) * | 2021-09-09 | 2021-12-31 | 苏州市康力骨科器械有限公司 | Medullary cavity file of finger joint fusion device |
| CN113855151B (en) * | 2021-09-09 | 2024-03-19 | 苏州市康力骨科器械有限公司 | Finger joint fusion device marrow cavity file |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4608053A (en) | Femoral hip prosthesis | |
| US4549319A (en) | Artificial joint fixation to bone | |
| RU2655878C2 (en) | Joint implant | |
| US4163292A (en) | Hip prosthesis | |
| CN102917658A (en) | Intramedullary fixation device and methods for bone fixation and stabilization | |
| US20210045884A1 (en) | Implant Device(s) Including Tapered Protrusions and Method(s) for Inserting the Same into Bone | |
| KR20070083667A (en) | Intramedullary pin for insertion in medullary cavity of femur | |
| EP2421476A1 (en) | Hip prosthesis | |
| CN110393612A (en) | A kind of tibial plateau support and the knee-joint prosthesis using it | |
| WO1991003992A1 (en) | Skeletal implants | |
| CN209347145U (en) | Myelocavity file | |
| CN207012231U (en) | Outside universal lock inner fixing device after a kind of tibial plateau | |
| JP2997681B2 (en) | Thigh of hip prosthesis | |
| CN211409540U (en) | Femoral stem prosthesis and artificial hip joint prosthesis | |
| CN202136445U (en) | Biological absorption type femoral stem prosthesis | |
| CN107374790A (en) | A kind of porous soleplate formula cervical artificial disc prosthese | |
| CN208942488U (en) | Bone prosthetic appliance | |
| CN109157309A (en) | Proximal tibia filling block prosthese | |
| CN109394300A (en) | Myelocavity file | |
| CN110192934A (en) | Alaossisilii filling prosthesis | |
| CN214387784U (en) | Replacement scaphoid used in orthopedic surgery | |
| WO2010063167A1 (en) | Artificial femoral stem and artificial total hip replacement prosthesis thereof | |
| CN211409544U (en) | Degradable cervical vertebra fusion cage | |
| CN208404802U (en) | Oversleeve in a kind of marrow | |
| CN209347323U (en) | A kind of type femoral bone end prosthesis |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |