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CN109394300A - Myelocavity file - Google Patents

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Publication number
CN109394300A
CN109394300A CN201811430709.XA CN201811430709A CN109394300A CN 109394300 A CN109394300 A CN 109394300A CN 201811430709 A CN201811430709 A CN 201811430709A CN 109394300 A CN109394300 A CN 109394300A
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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.)
Granted
Application number
CN201811430709.XA
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Chinese (zh)
Other versions
CN109394300B (en
Inventor
丁罡
申宝胜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shaanxi Sizheng Medical Devices Co Ltd
Original Assignee
Shaanxi Sizheng Medical Devices Co Ltd
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Priority to CN201811430709.XA priority Critical patent/CN109394300B/en
Publication of CN109394300A publication Critical patent/CN109394300A/en
Application granted granted Critical
Publication of CN109394300B publication Critical patent/CN109394300B/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods
    • A61B17/16Instruments for performing osteoclasis; Drills or chisels for bones; Trepans
    • A61B17/164Instruments for performing osteoclasis; Drills or chisels for bones; Trepans intramedullary
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods
    • A61B17/16Instruments for performing osteoclasis; Drills or chisels for bones; Trepans
    • A61B17/1662Instruments for performing osteoclasis; Drills or chisels for bones; Trepans for particular parts of the body
    • A61B17/1664Instruments for performing osteoclasis; Drills or chisels for bones; Trepans for particular parts of the body for the hip
    • A61B17/1668Instruments for performing osteoclasis; Drills or chisels for bones; Trepans for particular parts of the body for the hip for the upper femur

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)
  • Prostheses (AREA)

Abstract

The invention 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

Myelocavity file
Technical field
The present invention 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.
Summary of the invention
The present invention has designed and developed Myelocavity file, goal of the invention of the invention first is that being cut by the way that annular groove is arranged in middle rear end It cuts sword and can make in the maximum bone amount for retaining cancellous bone of near end of thighbone in proximal end setting four sides tooth-shape structure to solve The problem of distal end of proximal end fixed femoral stem forms loose fit with femoral bone cavitas medullaris.
The second object of the present invention is by setting cylindrical shape structure for distal portion to solve Myelocavity file and pulp cavity The problem of initial stage of contact can freely adjust the angle.
Technical solution provided by the invention 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 present invention 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 of the present invention.
Fig. 2 is the left view of Myelocavity file of the present invention.
Fig. 3 is the lateral surface three-dimensional structure diagram of Myelocavity file of the present invention.
Fig. 4 is the medial surface three-dimensional structure diagram of Myelocavity file of the present invention.
Fig. 5 is the enlarged drawing in Fig. 4 at A.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text Word 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 invention is made of stainless steel material, and the main structure of Myelocavity file includes Sequentially connected close end 110, middle rear end 120 and distal portion 130;Wherein, close end 110 includes in first be oppositely arranged Side 110a and the first lateral surface 110b, and the first medial surface 110a and the first lateral surface 110b is globoidal structure, in first The joint face of side 110a and the first lateral surface 110b are two symmetrical first contralateral sides 110c, in the first medial surface 110a With transverse concave groove is offered on the first lateral surface 110b, offer oblique groove on the first contralateral sides 110c, and oblique Four sides tooth-shape structure 111 is set in groove;Around setting annular groove cutting edge on middle rear end 120;Distal portion 130 includes successively phase Transition part 131 and rotating part 132 even, 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 invention includes: hip replacement surgery, Myelocavity file is connect by handle connector with handle, Myelocavity file squeezed into pulp cavity by tapping handle, thus by pulp cavity fashion into and type femoral bone end prosthesis relative to shape, in pulp cavity The initial stage contacted with femoral bone cavitas medullaris is filed, since the rotating part of Myelocavity file distal portion is column, and does not have tooth, can freely turn It is dynamic, it 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 annular groove Cutting edge 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, in marrow Chamber file be driven into pulp cavity during, proximal end four sides tooth-shape structure in filing femoral bone cavitas medullaris, can filing fall a part of spongiosa Bone, but can also retain a part of bone amount simultaneously, while so that the close end of type femoral bone end prosthesis and femoral bone cavitas medullaris is formed interference fit Retain bone amount to greatest extent, promotes Bone Ingrowth, the cancellous bone chip shapes fallen by four sides tooth-shape structure filing are smaller, can lure Cancellous bone is led in the Bone Ingrowth of close end fixed femur handle proximal end.
Test example
Firstly, the Myelocavity file of the present invention and its corresponding type femoral bone end prosthesis of 5 same specifications are randomly selected, it is random to select Take common Myelocavity file and its corresponding type femoral bone end prosthesis, coding rule of 5 same specifications as shown in table 1:
Table 1 specimen coding rule
Exemplar number Exemplar description Exemplar specification Prosthese number Prosthese description Prosthese specification
F1 Invention Myelocavity file 3# J1 Femoral stem 3#
F2 Invention Myelocavity file 3# J2 Femoral stem 3#
F3 Invention Myelocavity file 3# J3 Femoral stem 3#
F4 Invention Myelocavity file 3# J4 Femoral stem 3#
F5 Invention Myelocavity file 3# J5 Femoral stem 3#
P1 Common Myelocavity file 3# J6 Femoral stem 3#
P2 Common Myelocavity file 3# J7 Femoral stem 3#
P3 Common Myelocavity file 3# J8 Femoral stem 3#
P4 Common Myelocavity file 3# J9 Femoral stem 3#
P5 Common Myelocavity file 3# J10 Femoral stem 3#
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, Myelocavity file of the present invention and Myelocavity file handle are connected, the present invention is related to And Myelocavity file be driven into the femoral bone cavitas medullaris of foam bone, it is ensured that the position consistency that each Myelocavity file is squeezed into extracts Myelocavity 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
Exemplar number Exemplar description Type femoral bone end prosthesis withdrawal force/N Pure water volume/ml in pulp cavity
F1 Invention Myelocavity file 181 226
F2 Invention Myelocavity file 178 232
F3 Invention Myelocavity file 185 229
F4 Invention Myelocavity file 170 223
F5 Invention Myelocavity file 174 231
P1 Common Myelocavity file 158 205
P2 Common Myelocavity file 161 211
P3 Common Myelocavity file 152 213
P4 Common Myelocavity file 165 206
P5 Common Myelocavity file 151 199
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited In specific details and legend shown and described herein.

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.
CN201811430709.XA 2018-11-28 2018-11-28 Marrow cavity file Active CN109394300B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811430709.XA CN109394300B (en) 2018-11-28 2018-11-28 Marrow cavity file

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Application Number Priority Date Filing Date Title
CN201811430709.XA CN109394300B (en) 2018-11-28 2018-11-28 Marrow cavity file

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Publication Number Publication Date
CN109394300A true CN109394300A (en) 2019-03-01
CN109394300B CN109394300B (en) 2023-08-04

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114748126A (en) * 2022-04-19 2022-07-15 天衍医疗器材有限公司 Knee joint revision file
USD1046152S1 (en) 2022-06-29 2024-10-08 Depuy Ireland Unlimited Company Femoral broach

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5456717A (en) * 1992-12-07 1995-10-10 Plus Endoprothtik Ag Stem for a femoral hip-joint endoprosthesis
WO1996009011A1 (en) * 1994-09-21 1996-03-28 Johnson Lanny L Instrumentation for proximal femoral compaction broaching
US5681315A (en) * 1995-05-31 1997-10-28 Szabo; Zsolt Bone marrow rasp
US6143012A (en) * 1997-05-06 2000-11-07 Orthofix S.R.L. Intramedullary awl assembly for preparation for a femoral-style nailing
US20040249384A1 (en) * 2003-02-04 2004-12-09 Blaha J. David Compacting broach
CN201668450U (en) * 2010-04-23 2010-12-15 创生医疗器械(江苏)有限公司 Medullary cavity file
US20110160733A1 (en) * 2009-12-23 2011-06-30 Aesculap Ag Modular prosthesis rasp
FR2961684A1 (en) * 2010-06-25 2011-12-30 T O Femoral shaft preparation and surgical instrument assembly for implantation of femoral rod, has receiving cavity worked by smoothing rasp including section corresponding to shape and dimension of chosen size of femoral rod
CN102573667A (en) * 2009-04-02 2012-07-11 马丁·M·马劳尔 Bone rifling system and method of treating bone using the system
US20120245700A1 (en) * 2011-03-24 2012-09-27 Sidebotham Christopher G Load bearing implants
US20140277540A1 (en) * 2013-03-15 2014-09-18 Filip Leszko Tibial impaction guide surgical instrument and method of using same
CN206603794U (en) * 2016-11-30 2017-11-03 嘉思特华剑医疗器材(天津)有限公司 Easily import extended type femoral bone cavitas medullaris file
CN107647899A (en) * 2016-07-26 2018-02-02 北京蒙太因医疗器械有限公司 Osteotomy device for replacement knee in arthroplasty
CN207412212U (en) * 2017-03-07 2018-05-29 上海长海医院 Bone-cement type hip replacement femoral myelocavity file

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5456717A (en) * 1992-12-07 1995-10-10 Plus Endoprothtik Ag Stem for a femoral hip-joint endoprosthesis
WO1996009011A1 (en) * 1994-09-21 1996-03-28 Johnson Lanny L Instrumentation for proximal femoral compaction broaching
US5681315A (en) * 1995-05-31 1997-10-28 Szabo; Zsolt Bone marrow rasp
US6143012A (en) * 1997-05-06 2000-11-07 Orthofix S.R.L. Intramedullary awl assembly for preparation for a femoral-style nailing
US20040249384A1 (en) * 2003-02-04 2004-12-09 Blaha J. David Compacting broach
CN102573667A (en) * 2009-04-02 2012-07-11 马丁·M·马劳尔 Bone rifling system and method of treating bone using the system
US20110160733A1 (en) * 2009-12-23 2011-06-30 Aesculap Ag Modular prosthesis rasp
CN201668450U (en) * 2010-04-23 2010-12-15 创生医疗器械(江苏)有限公司 Medullary cavity file
FR2961684A1 (en) * 2010-06-25 2011-12-30 T O Femoral shaft preparation and surgical instrument assembly for implantation of femoral rod, has receiving cavity worked by smoothing rasp including section corresponding to shape and dimension of chosen size of femoral rod
US20120245700A1 (en) * 2011-03-24 2012-09-27 Sidebotham Christopher G Load bearing implants
US20140277540A1 (en) * 2013-03-15 2014-09-18 Filip Leszko Tibial impaction guide surgical instrument and method of using same
CN107647899A (en) * 2016-07-26 2018-02-02 北京蒙太因医疗器械有限公司 Osteotomy device for replacement knee in arthroplasty
CN206603794U (en) * 2016-11-30 2017-11-03 嘉思特华剑医疗器材(天津)有限公司 Easily import extended type femoral bone cavitas medullaris file
CN207412212U (en) * 2017-03-07 2018-05-29 上海长海医院 Bone-cement type hip replacement femoral myelocavity file

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114748126A (en) * 2022-04-19 2022-07-15 天衍医疗器材有限公司 Knee joint revision file
USD1046152S1 (en) 2022-06-29 2024-10-08 Depuy Ireland Unlimited Company Femoral broach

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