CA2007079A1 - Device for compression screwing - Google Patents
Device for compression screwingInfo
- Publication number
- CA2007079A1 CA2007079A1 CA002007079A CA2007079A CA2007079A1 CA 2007079 A1 CA2007079 A1 CA 2007079A1 CA 002007079 A CA002007079 A CA 002007079A CA 2007079 A CA2007079 A CA 2007079A CA 2007079 A1 CA2007079 A1 CA 2007079A1
- Authority
- CA
- Canada
- Prior art keywords
- sleeve
- compression
- screw
- fixing ring
- screwing
- 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.)
- Abandoned
Links
- 230000006835 compression Effects 0.000 title claims abstract description 18
- 238000007906 compression Methods 0.000 title claims abstract description 18
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 9
- 239000000853 adhesive Substances 0.000 claims abstract description 3
- 230000001070 adhesive effect Effects 0.000 claims abstract description 3
- 210000000501 femur body Anatomy 0.000 claims abstract description 3
- 210000001519 tissue Anatomy 0.000 claims description 3
- 229910019932 CrNiMo Inorganic materials 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 230000006978 adaptation Effects 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 241001502381 Budorcas taxicolor Species 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/74—Devices for the head or neck or trochanter of the femur
- A61B17/742—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck
- A61B17/746—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck the longitudinal elements coupled to a plate opposite the femoral head
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/809—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with bone-penetrating elements, e.g. blades or prongs
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Medical Informatics (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
ABSTRACT OF THE DISCLOSURE
Device for compression screwing fractures of the femural neck, consisting of a plate of a sleeve, the sleeve being hollow and cylindrical in shape, the plate of the sleeve beign attached by screws to the femur shaft and of a bone screw being located within the sleeve which is provided with a female thread on its head side into which compression screw having a respective male thread fits, whereby the compression screw is supported by means of the bottom edge of its head or by a respective, especially conical contact surface for the limitation of its movement against a fixing ring being located within the sleeve in such a way that it can be displaced, sliding with its surface along the inner surface of the sleeve and having a conical surface in an acial direction that is adapted to the bottom edge of the head of the compression screw and the cone angle of which is sized in such a way that the adhesive friction between the outer surface of the fixing ring and the inner surface of the sleeve is greater than the compressional force acting in the longitudinal direction of the screw.
Device for compression screwing fractures of the femural neck, consisting of a plate of a sleeve, the sleeve being hollow and cylindrical in shape, the plate of the sleeve beign attached by screws to the femur shaft and of a bone screw being located within the sleeve which is provided with a female thread on its head side into which compression screw having a respective male thread fits, whereby the compression screw is supported by means of the bottom edge of its head or by a respective, especially conical contact surface for the limitation of its movement against a fixing ring being located within the sleeve in such a way that it can be displaced, sliding with its surface along the inner surface of the sleeve and having a conical surface in an acial direction that is adapted to the bottom edge of the head of the compression screw and the cone angle of which is sized in such a way that the adhesive friction between the outer surface of the fixing ring and the inner surface of the sleeve is greater than the compressional force acting in the longitudinal direction of the screw.
Description
~(~7079 CROSS REFERENCE TO RE~ T13D ~PPLICATION
~hi~ application claims the prlorlty of the Federal ~public 4f Germ~ny application No. ~ 8~ 00 121.4 11ed January 4th, 19~, which ls lncorporated hereln ~y reference.
BACKGROU~ O~ THE INVENTION
The present inveAtlon rolates to a device for com~resslon screwing fractures of tha femural neck, con~lstlng of a plate of a slecv~, th~ sleev~ being hollow and cyllndrlcal ~n shape, the plate of the æleeve belng attached by screws to the femur shaft and of a bone screw beln~ located wlthin the sleeve whlch is provlded wlth ~ female thread on it~ hoad slde into which a compressi4n screw havlng 8 respectlve male thread flts.
In ~h~ ca~e o~ fractures oE the femural neck, osteosynthesls ~s gradually takins ov~r from bone repl~cement with endoprosth~ses. Thls ~hift has led to the dovelopment Oc numerous new operatlon methods and new in~tru~ents.
The screwing and~or n~iling ~ogether of bone fragments ln : partlcular, is used widely and has shown that ~ pressural force whlch causes the fracture surfaces to notch or wadge into each cther greatly lmproves the heallng o~ the fracture. In particular, the revascularlzatlon o~ the top ~0 fragment ~s gre~tly improvsd due to the bettor st~blllty and tha preventlon o~ destruct~ve shear a~d rotational movement ln such a mechaAlcally endangered area.
~ ~ 7079 I~ ls known to construct the inner slde of the sleeve of such a compression screw in a ~ep-like fashlon so that the head o~ ~he compresslon screw læ supported by the ~lng-shaped face-~nd of th~ mlll~d openlng. As the screwlng length o~ the bone screw d~pend~ on the type and posltlon of the ~racture lt can vary greatly and the length of the compresslon scr~w ~ust be adapted to the actual conditlons every ~ime when using a fixed s~pport surface.
Thls h~s the disadvantage that lf a too short or a too long ~ompresslon screw is selected it ha~ to be screwed back out ~gain ln order to replace it wlth a screw o~ the ~lght length. The pa~ient is thus additlonally sub~ected lS to unn~c~sary strain.
SUMMAi~Y OF I~IE INVENTION
.
It iS an ob~ ~ct of the invention to pr~vide a devlce for compresslon s~rewing of the above mentloned type wlth wh~ch u~lfo~m compres~ion screws ~an be used a~d also have a sa~ support in the ~leeve whlch ln turn can wlthstand lar~e axl~l forces.
~s The above and other ob~ects ars accompllshed according to the i~ve~tion by utilizlng the r~allzation that a length selec~ion or adaptation of t~e ~crew is n~ longer ne~ssary i~ a flxing rin~ 1~ placed lnte the sle~ve ln any poæitlon which then wldens wh~n the compression screw ls t~ghtened a~d ls pressed so tlghtly against the lnner surf~e of ~he sleeve that the ~dheslve friction preYentS
r'EC._? 'SS ll:Ul P~ `-HRI~,TI~ ,E'I ~EI~;'LII`I S_'~7U~,-1 '"05 : ~ O ~ 7 0 7 9 the fixing ring ~rom slldlng. The flxation is achleved by axially and con1cally twlstin~ out the fixing rlng untll the bottom edye of the head of the compres~lon screw exactly ~its lnto lt. Th~ wld~ning of the flxlng rlng can 5 be augmented according to a favorable ~urther embodiment of the ~nventlon by slitting the fixlng ring ln a longltudinal dixection. The flxlns ring can also be posltioned and secured against unlntentional sllding ln the sleeve whil t the sleeve ls being lnsert~d because of o its sprlngllke characterlstlcs ln the radlal dixection.
t is also partlc~larly advantageous that the con~tructlon of t~B devlce for compresslon screwing accordlng to the lnventlon does ~ot en~argen it. The devlce is not expenslve and can be constructed eco~omically wlthout an appreclable lncrease in the co~ as, ln pa~tlcular, the amount of raw material requlred can in some cases decrease due to tha shorter s~rews. The head of the comp~es~lon screw~ res~s lnslde the sleeve and therefore is of a 20 smaller diameter.
In order to prev~nt the ~lxing ring from ~elng able to turn whilst the compr~sslon screw is belng screwed in, it preferably has ~n outer longltudlnal groove. The lnslde of the sl~eve ~as a correspondlng pro~action ln the form of a bar which slots into the groove of ~h~ flxl~g rlng.
Alternately the sleev~ can have a groove lnto which a pln or a pro~ection of the ~lxlng rin~ can slot.
In order to ~n~ure tissue compatlbility lt has al~o proven ~o ~e advan~ageous to construct all th~ parts of th8 ~ ~ 0 7079 lmplanta~e and all ~he lnstrumen~s that come lnto contact wlth the tissue out o~ ~he one sAme matsrlal, in partlcular out o~ the body comp~tlble stezl x 5 ~rNlMo 1~10.
1$ Figure 1 is a longitudlnal sectlon of a preferred embodlment of ~ devlce for compression screwlng a~cordlng ~o the lnventlon with a ~ar~lal lndlc~tlon of D fracture of a femur~l neck.
~igure ~ ls a perspec~i~e view o~ the ~ixing ring.
DESC~RIPTION OF THE PREFERRED EMBODIMENT
The preferred embod.lmen~ o~ the dovlco for compresslo~
screwlng of ~he two fe~ural neck parts A and B ~n Flgure 1 wlll be used at first to descrlbe the m~thod of operation:
l~uring the operation of femural neck ~ractur~s using o~teosynthesis the ~emur has a bore of the re~ulred dlameter l~to whlch the sleevo 1 ls insorted and through wh$~h a KirsChner wire 2 is ~hen thread~d as a l~ad. This ~lmpliflas the screwing in o~ the bo~e scr~w 4 whlch ln ~urn has a lang~tudinal bore 3 throuyh whlch the Xlrschner 3C wlre 2 can flt.
t6 r!E~ . . .` ' '. ;`~ 11: 0_' F'~ ~-HF~ S L,E~ 7,~ 7 ~0()7079 The screw 4 ls screwed through the ~racture cross-sectlon in~o the head part B by fl~tlng a screwdxlver lnto the groove 4a in the back end of the screw. The Klrschner wlre ~ ls then removed. The sleeve plate 5 is attach~d firmly to the sle~ve and ls ~ltted to the shape o~ the ~emur ~haft to which it ls tho~ ~lrmly attached by screwing rortlcal screws 6 into prebored holes.
De~end~nt o~ the ~crewln~ depth reached by the bone screw 0 4, the fixin~ ring 7 is po~ltioned ln tho sleeve 1, whlls~
taXlng the lsngth of a screw ~ lnto ac~ount whlch can be screwed lnto the inner thread 9 of the bone screw ~. The flxins ring ls at flrst fre~ly moveable ln the sleeve.
Then the compresslon crew 8 is screwed into the lnner thread 9 at the end of the bone screw 4 whlch protrudes lnto the sleeve 1. In order ~or the flxiny ring 7 to be able to widen whllæt the compres~lon screw ~ ls ~e~ng lnserted ~oth of the contact surfaces 10 of the flxlng ring 7 and the `~ottom edge o~ the compress lon scr~w 8 are 20 fittad and conlcal in form.
~he adhesive frlctional force resulklng from ~he wldenlng of the ~le~ve caused by th~ wedge actlon of the cone ls greater thPIn the compresslonal ~orce ~ctlng ln the longltudlnal dlrection of the screw. In thls way the sle~ve ls s~lf-ch~cking so that the ~one areas ~ and ~
close in on each other ln the d~sired ~shion due to the compresslon~l ~o~c~.
The sl~ev~ 1 has ~ longitudinal groove 11 on the lnner surface into whlch Ihe pin 12 o~ the flxing ring 7 flts .C~ F'~ ~ HRI~-,TlH~ EE~
~007079 which ensure~ th~t the f~xlng rlng 7 cannot turn ~hilst the compresslon screw ~ ls belng lnsert~d. The same effect can be a~hl~ved by the fixlng rlng ~ as lllustrated ln ~lgure 2 having a longltudln~l sllt 13 and whlch ls 5 ins~rted and moveable ln the groove of th~ sleeve 1. The lon~ltudlnal sllt 13 also improv~s the widenlng and clamping characteristics of the flxlng ring 7. The lmplantate ls totally removed after the fracturs has ~ealed.
It wlll be understood that the above descrlption of the present lnvention ls susceptible to ~arlous modlflcations, changes and adaptations, and the same are ~ntended to be ~omprehended within the me~ning and ran~ of equlvalent~
of the appended clalms.
* * * * *
2a ~5
~hi~ application claims the prlorlty of the Federal ~public 4f Germ~ny application No. ~ 8~ 00 121.4 11ed January 4th, 19~, which ls lncorporated hereln ~y reference.
BACKGROU~ O~ THE INVENTION
The present inveAtlon rolates to a device for com~resslon screwing fractures of tha femural neck, con~lstlng of a plate of a slecv~, th~ sleev~ being hollow and cyllndrlcal ~n shape, the plate of the æleeve belng attached by screws to the femur shaft and of a bone screw beln~ located wlthin the sleeve whlch is provlded wlth ~ female thread on it~ hoad slde into which a compressi4n screw havlng 8 respectlve male thread flts.
In ~h~ ca~e o~ fractures oE the femural neck, osteosynthesls ~s gradually takins ov~r from bone repl~cement with endoprosth~ses. Thls ~hift has led to the dovelopment Oc numerous new operatlon methods and new in~tru~ents.
The screwing and~or n~iling ~ogether of bone fragments ln : partlcular, is used widely and has shown that ~ pressural force whlch causes the fracture surfaces to notch or wadge into each cther greatly lmproves the heallng o~ the fracture. In particular, the revascularlzatlon o~ the top ~0 fragment ~s gre~tly improvsd due to the bettor st~blllty and tha preventlon o~ destruct~ve shear a~d rotational movement ln such a mechaAlcally endangered area.
~ ~ 7079 I~ ls known to construct the inner slde of the sleeve of such a compression screw in a ~ep-like fashlon so that the head o~ ~he compresslon screw læ supported by the ~lng-shaped face-~nd of th~ mlll~d openlng. As the screwlng length o~ the bone screw d~pend~ on the type and posltlon of the ~racture lt can vary greatly and the length of the compresslon scr~w ~ust be adapted to the actual conditlons every ~ime when using a fixed s~pport surface.
Thls h~s the disadvantage that lf a too short or a too long ~ompresslon screw is selected it ha~ to be screwed back out ~gain ln order to replace it wlth a screw o~ the ~lght length. The pa~ient is thus additlonally sub~ected lS to unn~c~sary strain.
SUMMAi~Y OF I~IE INVENTION
.
It iS an ob~ ~ct of the invention to pr~vide a devlce for compresslon s~rewing of the above mentloned type wlth wh~ch u~lfo~m compres~ion screws ~an be used a~d also have a sa~ support in the ~leeve whlch ln turn can wlthstand lar~e axl~l forces.
~s The above and other ob~ects ars accompllshed according to the i~ve~tion by utilizlng the r~allzation that a length selec~ion or adaptation of t~e ~crew is n~ longer ne~ssary i~ a flxing rin~ 1~ placed lnte the sle~ve ln any poæitlon which then wldens wh~n the compression screw ls t~ghtened a~d ls pressed so tlghtly against the lnner surf~e of ~he sleeve that the ~dheslve friction preYentS
r'EC._? 'SS ll:Ul P~ `-HRI~,TI~ ,E'I ~EI~;'LII`I S_'~7U~,-1 '"05 : ~ O ~ 7 0 7 9 the fixing ring ~rom slldlng. The flxation is achleved by axially and con1cally twlstin~ out the fixing rlng untll the bottom edye of the head of the compres~lon screw exactly ~its lnto lt. Th~ wld~ning of the flxlng rlng can 5 be augmented according to a favorable ~urther embodiment of the ~nventlon by slitting the fixlng ring ln a longltudinal dixection. The flxlns ring can also be posltioned and secured against unlntentional sllding ln the sleeve whil t the sleeve ls being lnsert~d because of o its sprlngllke characterlstlcs ln the radlal dixection.
t is also partlc~larly advantageous that the con~tructlon of t~B devlce for compresslon screwing accordlng to the lnventlon does ~ot en~argen it. The devlce is not expenslve and can be constructed eco~omically wlthout an appreclable lncrease in the co~ as, ln pa~tlcular, the amount of raw material requlred can in some cases decrease due to tha shorter s~rews. The head of the comp~es~lon screw~ res~s lnslde the sleeve and therefore is of a 20 smaller diameter.
In order to prev~nt the ~lxing ring from ~elng able to turn whilst the compr~sslon screw is belng screwed in, it preferably has ~n outer longltudlnal groove. The lnslde of the sl~eve ~as a correspondlng pro~action ln the form of a bar which slots into the groove of ~h~ flxl~g rlng.
Alternately the sleev~ can have a groove lnto which a pln or a pro~ection of the ~lxlng rin~ can slot.
In order to ~n~ure tissue compatlbility lt has al~o proven ~o ~e advan~ageous to construct all th~ parts of th8 ~ ~ 0 7079 lmplanta~e and all ~he lnstrumen~s that come lnto contact wlth the tissue out o~ ~he one sAme matsrlal, in partlcular out o~ the body comp~tlble stezl x 5 ~rNlMo 1~10.
1$ Figure 1 is a longitudlnal sectlon of a preferred embodlment of ~ devlce for compression screwlng a~cordlng ~o the lnventlon with a ~ar~lal lndlc~tlon of D fracture of a femur~l neck.
~igure ~ ls a perspec~i~e view o~ the ~ixing ring.
DESC~RIPTION OF THE PREFERRED EMBODIMENT
The preferred embod.lmen~ o~ the dovlco for compresslo~
screwlng of ~he two fe~ural neck parts A and B ~n Flgure 1 wlll be used at first to descrlbe the m~thod of operation:
l~uring the operation of femural neck ~ractur~s using o~teosynthesis the ~emur has a bore of the re~ulred dlameter l~to whlch the sleevo 1 ls insorted and through wh$~h a KirsChner wire 2 is ~hen thread~d as a l~ad. This ~lmpliflas the screwing in o~ the bo~e scr~w 4 whlch ln ~urn has a lang~tudinal bore 3 throuyh whlch the Xlrschner 3C wlre 2 can flt.
t6 r!E~ . . .` ' '. ;`~ 11: 0_' F'~ ~-HF~ S L,E~ 7,~ 7 ~0()7079 The screw 4 ls screwed through the ~racture cross-sectlon in~o the head part B by fl~tlng a screwdxlver lnto the groove 4a in the back end of the screw. The Klrschner wlre ~ ls then removed. The sleeve plate 5 is attach~d firmly to the sle~ve and ls ~ltted to the shape o~ the ~emur ~haft to which it ls tho~ ~lrmly attached by screwing rortlcal screws 6 into prebored holes.
De~end~nt o~ the ~crewln~ depth reached by the bone screw 0 4, the fixin~ ring 7 is po~ltioned ln tho sleeve 1, whlls~
taXlng the lsngth of a screw ~ lnto ac~ount whlch can be screwed lnto the inner thread 9 of the bone screw ~. The flxins ring ls at flrst fre~ly moveable ln the sleeve.
Then the compresslon crew 8 is screwed into the lnner thread 9 at the end of the bone screw 4 whlch protrudes lnto the sleeve 1. In order ~or the flxiny ring 7 to be able to widen whllæt the compres~lon screw ~ ls ~e~ng lnserted ~oth of the contact surfaces 10 of the flxlng ring 7 and the `~ottom edge o~ the compress lon scr~w 8 are 20 fittad and conlcal in form.
~he adhesive frlctional force resulklng from ~he wldenlng of the ~le~ve caused by th~ wedge actlon of the cone ls greater thPIn the compresslonal ~orce ~ctlng ln the longltudlnal dlrection of the screw. In thls way the sle~ve ls s~lf-ch~cking so that the ~one areas ~ and ~
close in on each other ln the d~sired ~shion due to the compresslon~l ~o~c~.
The sl~ev~ 1 has ~ longitudinal groove 11 on the lnner surface into whlch Ihe pin 12 o~ the flxing ring 7 flts .C~ F'~ ~ HRI~-,TlH~ EE~
~007079 which ensure~ th~t the f~xlng rlng 7 cannot turn ~hilst the compresslon screw ~ ls belng lnsert~d. The same effect can be a~hl~ved by the fixlng rlng ~ as lllustrated ln ~lgure 2 having a longltudln~l sllt 13 and whlch ls 5 ins~rted and moveable ln the groove of th~ sleeve 1. The lon~ltudlnal sllt 13 also improv~s the widenlng and clamping characteristics of the flxlng ring 7. The lmplantate ls totally removed after the fracturs has ~ealed.
It wlll be understood that the above descrlption of the present lnvention ls susceptible to ~arlous modlflcations, changes and adaptations, and the same are ~ntended to be ~omprehended within the me~ning and ran~ of equlvalent~
of the appended clalms.
* * * * *
2a ~5
Claims (6)
1. Device for compression screwing fractures of the femural neck, consisting of a plate of a sleeve, the sleeve being hollow and cylindrical in shape, the plate of the sleeve being attached by screws to the femur shaft and of a bone screw being located within the sleeve which is provided with a female thread on its head side into which a compression screw having a respective male thread fits, whereby said compression screw is supported by means of the bottom edge of its head or by a respective, especially conical contact surface for the limitation of its movement against a fixing ring being located within said sleeve in such a way that it can be displaced, sliding with its surface along the inner surface of said sleeve and having a conical surface in an axial direction that is adapted to the bottom edge of the head of said compression screw and the cone angle of which is sized in such a way that the adhesive frictiion between the outer surface of the fixing ring and the inner surface of said sleeve is greater than the compressional force acting in the longitudinal direction of said compression screw.
2. Device for compression screwing as defined in claim 1, wherein said fixing ring is slit in a longitudinal direction.
3. Device for compression screwing as defined in claim 1, wherein said sleeve comprises a longitudinal guide means to prevent said fixing ring from turning in said sleeve.
4. Device for compression screwing as defined in claim 3, wherein said guide means comprises a longitudinal groove in said fixing ring into which a projection in the form of a bar on the inner surface of said sleeve slots.
5. Device for compression screwing as defined in claim 3, wherein a projection in the form of a pin is radially positioned on the outer surface of said fixing ring and which slots into a longitudinal groove on the inner surface of said sleeve.
6. Device for compression screwing as defined in claim 1, wherein All the parts of said device and all the instruments which come into contact with body tissue are constructed of the one same material, in particular, of X 5 CrNiMo 1810.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8900121U DE8900121U1 (en) | 1989-01-04 | 1989-01-04 | |
| DEG8900121.4 | 1989-01-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2007079A1 true CA2007079A1 (en) | 1990-07-04 |
Family
ID=6834852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002007079A Abandoned CA2007079A1 (en) | 1989-01-04 | 1990-01-03 | Device for compression screwing |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5007910A (en) |
| EP (1) | EP0377401A1 (en) |
| JP (1) | JPH03198840A (en) |
| CA (1) | CA2007079A1 (en) |
| DE (1) | DE8900121U1 (en) |
Families Citing this family (59)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5122133A (en) * | 1990-10-26 | 1992-06-16 | Smith & Nephew Richards Inc. | Compression screw for a joint endoprosthesis |
| FR2674119B1 (en) * | 1991-03-22 | 1993-06-18 | Fixano Productions | DEVICE FOR GUIDING THE SLIDING OF OSTEOSYNTHESIS SCREWS FOR INTRA-CAPSULAR FRACTURE OF THE FEMUR'S NECK. |
| GB9113578D0 (en) * | 1991-06-24 | 1991-08-14 | Howmedica | Intramedullary intertrochanteric fracture fixation appliance |
| JP3311022B2 (en) * | 1992-03-10 | 2002-08-05 | 旭光学工業株式会社 | Osteosynthesis material |
| DE4237520C2 (en) * | 1992-11-06 | 2002-01-17 | Dietmar A Kumm | Set screw to fix the femoral epiphysis against dislocation due to softening of the epiphyseal plate |
| IL105183A (en) * | 1993-03-28 | 1996-07-23 | Yehiel Gotfried | Surgical device for connection of fractured bones |
| FR2711505B1 (en) * | 1993-10-25 | 1995-12-29 | Tornier Sa | Device for synthesizing fractures of the upper end of the femur. |
| US5976139A (en) | 1996-07-17 | 1999-11-02 | Bramlet; Dale G. | Surgical fastener assembly |
| NL1009832C2 (en) * | 1998-08-10 | 2000-02-11 | Novarticulate Bv | Hip replacement. |
| FR2897259B1 (en) * | 2006-02-15 | 2008-05-09 | Ldr Medical Soc Par Actions Si | INTERSOMATIC TRANSFORAMINAL CAGE WITH INTERBREBAL FUSION GRAFT AND CAGE IMPLANTATION INSTRUMENT |
| US6645209B2 (en) | 2000-04-04 | 2003-11-11 | Synthes (Usa) | Device for rotational stabilization of bone segments |
| US6533789B1 (en) * | 2000-04-04 | 2003-03-18 | Synthes (Usa) | Device for rotational stabilization of bone segments |
| US6447546B1 (en) | 2000-08-11 | 2002-09-10 | Dale G. Bramlet | Apparatus and method for fusing opposing spinal vertebrae |
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| US8182484B2 (en) * | 2008-04-21 | 2012-05-22 | Depuy Products, Inc. | Orthopaedic trauma hip screw assembly |
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| RU2508065C1 (en) * | 2012-06-19 | 2014-02-27 | Николай Владимирович Белинов | Device for osteosynthesis of fractures of femoral neck |
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| DE202013101135U1 (en) * | 2013-03-15 | 2014-06-17 | Zimmer Gmbh | Surgical locking screw |
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| US10857003B1 (en) | 2015-10-14 | 2020-12-08 | Samy Abdou | Devices and methods for vertebral stabilization |
| US10973648B1 (en) | 2016-10-25 | 2021-04-13 | Samy Abdou | Devices and methods for vertebral bone realignment |
| US10744000B1 (en) | 2016-10-25 | 2020-08-18 | Samy Abdou | Devices and methods for vertebral bone realignment |
| US11179248B2 (en) | 2018-10-02 | 2021-11-23 | Samy Abdou | Devices and methods for spinal implantation |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3029811A (en) * | 1960-04-25 | 1962-04-17 | Ken Standard Corp | Surgical hip nail |
| US3107666A (en) * | 1961-07-17 | 1963-10-22 | Howe Sound Co | Fracture fixation nail |
| US3996931A (en) * | 1975-07-03 | 1976-12-14 | Callender Jr George R | Fractured bone setting fastener assembly |
| EP0023228B1 (en) * | 1979-07-25 | 1985-06-05 | Michael Dr. med. Stürmer | Compression pin for the intramedullary stabilisation of bone fractures |
| US4438762A (en) * | 1981-12-30 | 1984-03-27 | Richard F. Kyle | Orthopedic hip fixation device |
| US4530355A (en) * | 1982-01-18 | 1985-07-23 | Richards Manufacturing Co., Inc. | Compression screw assembly |
| US4432358A (en) * | 1982-01-22 | 1984-02-21 | Fixel Irving E | Compression hip screw apparatus |
| US4657001A (en) * | 1984-07-25 | 1987-04-14 | Fixel Irving E | Antirotational hip screw |
| US4612920A (en) * | 1984-11-06 | 1986-09-23 | Zimmer, Inc. | Compression hip screw |
| US4621629A (en) * | 1985-08-12 | 1986-11-11 | Harrington Arthritis Research Center | Compression hip screw |
-
1989
- 1989-01-04 DE DE8900121U patent/DE8900121U1/de not_active Expired - Lifetime
- 1989-12-20 EP EP89730224A patent/EP0377401A1/en not_active Withdrawn
- 1989-12-22 US US07/453,289 patent/US5007910A/en not_active Expired - Fee Related
- 1989-12-28 JP JP1338874A patent/JPH03198840A/en active Pending
-
1990
- 1990-01-03 CA CA002007079A patent/CA2007079A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| US5007910A (en) | 1991-04-16 |
| DE8900121U1 (en) | 1990-02-15 |
| JPH03198840A (en) | 1991-08-30 |
| EP0377401A1 (en) | 1990-07-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |