CA1239754A - Compression hip screw - Google Patents
Compression hip screwInfo
- Publication number
- CA1239754A CA1239754A CA000494515A CA494515A CA1239754A CA 1239754 A CA1239754 A CA 1239754A CA 000494515 A CA000494515 A CA 000494515A CA 494515 A CA494515 A CA 494515A CA 1239754 A CA1239754 A CA 1239754A
- Authority
- CA
- Canada
- Prior art keywords
- barrel
- pin
- hip screw
- femur
- groove
- 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.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
-
- 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
Abstract
ABSTRACT OF THE DISCLOSURE
A compression hip screw comprises a plate with a barrel, a lag screw adapted for fixation to a femoral head, a compression screw engageable with the lag screw to retain the plate and barrel attached with the femur and a locking pin to oppose rotation between the barrel and the lag screw. The locking pin is disposed on one side of the barrel to provide a robust structure for the lag screw and enable the barrel to transmit loads developed during the walking mode for the hip.
A compression hip screw comprises a plate with a barrel, a lag screw adapted for fixation to a femoral head, a compression screw engageable with the lag screw to retain the plate and barrel attached with the femur and a locking pin to oppose rotation between the barrel and the lag screw. The locking pin is disposed on one side of the barrel to provide a robust structure for the lag screw and enable the barrel to transmit loads developed during the walking mode for the hip.
Description
~23~
~OMPRE S S I ON H I P SCREW
! This inventivrl relate Jo a ~ompre~siorl hip cry which rigidly owns a femoral head to the remanning pyre ; of the Lamar d~splte a fracture i31 the area of the Femur neck.
~18eet~DfOr~l 8 compression hip screw provided a lag screw eat~nding through the femur and into eke femoral head.
An opening Wow drilled through the femur from an opiate wide of the femoral head to receive the lug screw. With the lag grew edible coupled to the femoral head, a plate aye disposed adjacent the femur Jo that a barrel formed by the : plate extended into the opening. The lag screw extended into a bore formed by the barrel Jo that a compression screw or bolt could thread ably engage the lag screw and oppose the barrel to bias the femoral hoed in the direction of the fracture to wake up any spacing at the f rapture .
As shown in United States Pant 4,432,35~ issued February 21, 1984 to Fixes, it it known thaw a loc1cing assembly can be provided to a koalas assembly to prevent rotation of the lag s~r2w relative to the plate and barrel. In order to aceommod~te the locking amiably, the barrel it modified to ; provide additional holes and the lag screw it motif led to dew he a hexagonal hole to Roy the looking amiably, which longer than 'eke lag Brew During a normal ~alkinq yule for eye f femur and I I compre~ion hop Roy, the ~upecior wide of the barrel it if loaded it nylon an eke i~fl3rior idea ox tea barrel it loaded ; in kippered. with the substantial load pared Jo the , pluck and carrel I it desirable to reduce thy pueblo of u Jo I
.... _ _ Lo fuller. Therefore. it any part of the compression hip screw ode jail, to Jay be necessary for thy patient to undergo additional surgery. For this reason, the lag screw and Braille j should be designed for optimum load transfer ., Toe pent invention comprise a co~pre~6ion hip screw with a locking device or assembly that it deposed Betty the lag screw and the barrel on the inferior slowed of I the barrel ED that a uniform profile retainer for the I ~uperl~ idea ox the barrel. The locking device calipers a pi dl~po~ed in a groove furrowed by the barrel end a excess ! framed by the lag screw.
i It is an advantage of the present invention that a compre~aion hip screw can be modlfi0d slightly to accommodate a Al looking assembler without substantially reducing the load .' carrying capability of the ~ompree~ion hip screw.
In the drawings. Figure 1 depicts the compression hip strew in cry section as applied to a femur hiving a future sty the need Thor. Figure 2 is a cross exile view taken , along line 2-2 of Figure 1. Figure 3 I a wide view of the lag I screw. lure 4 lo an exploded view of the kippers cry, llbarrel and lag essayer.
I
A our 10 owe in figure 1 with a femoral he'd 12 end a frisks I lotted at a neck 16. the floral head 12 I form a hi joint with an ace tabular member 18.
,' A cooperation hip o'er 20 includes a lag screw 22, a ~ompr~ion screw 24 ehreadably coupled to thy lag err 22. a place I adapted or attachment to the femur via bone screw l l .. . ..
- I
.
25~ end a looking pin I An opening 30 it formed in the femur Jo stunned Eon a lateral wide of tie femur Jo an literal pylon Winnie ho femor~l head. The plate 26 ~i~fln~ an intro b~21 32 di8po~Qd in thy opening 3û. Tube bay 8 I; iEormed lo bore 34 wending there~hrouqll. A f first end 36 of the I screw LO Dodd in Tao bore I when a ~ec3nd threaded end 38 it threaded into the femoral head fox f i~zation Thor The f irrupt end 36 it slowed at I Jo that a . screwdriver or the like can be utilized to advance the lag grew into the femor~l head. A pudgy 42 thin 'Shea lug screw 22 is provided with a threaded internal surface at the f irrupt 80 that the compression screw 24 it engage able eighth.
Thy ~ompre~BiOn screw 24 Proms a î tango I which abut a shoulder 46 on thy barrel 32 when the compre6l3ion screw I 1 ' sully engaged with the lag screw 22.
it In a~cor~lance with the it notion, the lag screw it .1 provided with a pelf of recesses 50 and 52 and the barrel 32 it privily with a grower 54. The pelf ox recesses 50 and 52 are I disposed on opposite sides of the lag strew Chile the groove So ! it disposed OX the inferior side 33 of the barrel. A a result the superior wide 35 of the barrel 32, viewing Figures 1 and 2, Dunn a unl~orm cylindrical profile with constant radial thickness R. The pin 28 f it within the grower 54 and extends into the bore 34 to Lowe f it within one of the ruses 50 or l, 52. Preferably. the groove 54 it dirll~n6ioned to rove 75% of thy pus ~iarnet~r an the pair of Roy it diminuendo Jo ra!~c~lve 25~ of thy pun dlametsr. In order to Ryan the pin ¦ I lo~tuainally ache groove I a pair of proje~tiLons 56 j Noah I art o'er t two end of the groove 54. The Err of 30 I proje~t~on~ o'er slit interference with thy pin Jo that the pin con be force onto the groove but the pin will not freely If . . .. ... _ I
withdraw from the grower. Therefore, the yin it y~Qldably retainer in toe Roy. The wall of tile groove 54 partially j overleap tile do eater of the pin 28 to prevent rudely I ~lthdrawal Thor.
S I, Thy tetehnlqu~ espied nereinaft*r one way kiwi I at ho ~ompr~ on hip screw 20 to the furrier 10. Other ¦¦ te~hrllque~ ore feasibly on view of o~thopaedic surgeon I pr~r~ncQs Ed the characteristics of toe femur fracture. The ¦ 01?2niSlg 30 ~13 prude by a ~u~tabl~ tool, such as a reamer.
101! Thy aye screw 22 it awkward to I e femaral heckle 12 in& the opining 30 by rotating the lag screw 22 for advancement in the if opening 30 to a predetermined location. For a "keyed insertion, thy pin 28 disposed in the groove 54 and ye I bfirrel 32 it aligned with the lag screw 22 for insertion of the 15' litter in born 34. IT the reseizes 50 or 52 are no aligned with pin 2B, the barrel 32 and plate 26 are rotated us he , pin zap I tree to advance unto either recess. with the barrel ugly disposed it tile opening 30, the plate 26 and barrel 3 If are rotated to Further secure the lag screw 22 to the femoral 20" head 12. when the plate it adjacent the femur, the bone Russ 25 are astound to the femur to fixedly tush toe plate thereto. Thereafter the ~ompre6aion Syria 24 is thread ably coupled Jo the lag screw I 60 that the femoral head 12 it biased it eo~pre~lon toward the barrel to eliminate or wreck any polka at the fracture I Alternatively, the mprQs~lon sow I on be Seward before the bone grew 25 attuned to thy femur. For a yule inrush the barrel '32 it avenues into the opined 30 over the lug grew without if thy pun 28 it thy grow I with the barrel 32 in ho opening 30, 30, ho plats no barrel 32 I rotated until tube groove 5 new iota zither ryes 50 or 520 Thy pie ye en I
I I . . . . .
erred into tile Roy 54 and one of the ruckuses to prevent If rakish between thy barrel 32 and thy lay Roy 22.
Thereafter 'eke barrel 32 end plot 26 ore Rudy 'co further cure tub 1~9 cry I to the femoral heal 12 and n the to 26 with the Syria 10.
ilAlthough eye foregoing description prop use of the pin I it it pO13Bible to utilize the lay screw 22, tile empower screw 24, the plate 26, no the be net 32 in the If absence of the pin 28, should the orthopaedi~ surgeon prefer I "koalas compression lo screw. If Tao orthopedic surgeon elect to omit the pun I the ~tructurQ for the barrel 32 and lo lag screw 22 retain the uniform cylindrical profile ox constant radial thickness for eke barrel 32 Jo that the een~ion , Lowe impurity to the barrel are evenly distribute. Moreover, 15 ! the lag cry 22 provides a robust structure with only minor , ~aterlal removed for the ~ece6ses 50 and 52, whether the pin I
ill UDOd ox lot .
~OMPRE S S I ON H I P SCREW
! This inventivrl relate Jo a ~ompre~siorl hip cry which rigidly owns a femoral head to the remanning pyre ; of the Lamar d~splte a fracture i31 the area of the Femur neck.
~18eet~DfOr~l 8 compression hip screw provided a lag screw eat~nding through the femur and into eke femoral head.
An opening Wow drilled through the femur from an opiate wide of the femoral head to receive the lug screw. With the lag grew edible coupled to the femoral head, a plate aye disposed adjacent the femur Jo that a barrel formed by the : plate extended into the opening. The lag screw extended into a bore formed by the barrel Jo that a compression screw or bolt could thread ably engage the lag screw and oppose the barrel to bias the femoral hoed in the direction of the fracture to wake up any spacing at the f rapture .
As shown in United States Pant 4,432,35~ issued February 21, 1984 to Fixes, it it known thaw a loc1cing assembly can be provided to a koalas assembly to prevent rotation of the lag s~r2w relative to the plate and barrel. In order to aceommod~te the locking amiably, the barrel it modified to ; provide additional holes and the lag screw it motif led to dew he a hexagonal hole to Roy the looking amiably, which longer than 'eke lag Brew During a normal ~alkinq yule for eye f femur and I I compre~ion hop Roy, the ~upecior wide of the barrel it if loaded it nylon an eke i~fl3rior idea ox tea barrel it loaded ; in kippered. with the substantial load pared Jo the , pluck and carrel I it desirable to reduce thy pueblo of u Jo I
.... _ _ Lo fuller. Therefore. it any part of the compression hip screw ode jail, to Jay be necessary for thy patient to undergo additional surgery. For this reason, the lag screw and Braille j should be designed for optimum load transfer ., Toe pent invention comprise a co~pre~6ion hip screw with a locking device or assembly that it deposed Betty the lag screw and the barrel on the inferior slowed of I the barrel ED that a uniform profile retainer for the I ~uperl~ idea ox the barrel. The locking device calipers a pi dl~po~ed in a groove furrowed by the barrel end a excess ! framed by the lag screw.
i It is an advantage of the present invention that a compre~aion hip screw can be modlfi0d slightly to accommodate a Al looking assembler without substantially reducing the load .' carrying capability of the ~ompree~ion hip screw.
In the drawings. Figure 1 depicts the compression hip strew in cry section as applied to a femur hiving a future sty the need Thor. Figure 2 is a cross exile view taken , along line 2-2 of Figure 1. Figure 3 I a wide view of the lag I screw. lure 4 lo an exploded view of the kippers cry, llbarrel and lag essayer.
I
A our 10 owe in figure 1 with a femoral he'd 12 end a frisks I lotted at a neck 16. the floral head 12 I form a hi joint with an ace tabular member 18.
,' A cooperation hip o'er 20 includes a lag screw 22, a ~ompr~ion screw 24 ehreadably coupled to thy lag err 22. a place I adapted or attachment to the femur via bone screw l l .. . ..
- I
.
25~ end a looking pin I An opening 30 it formed in the femur Jo stunned Eon a lateral wide of tie femur Jo an literal pylon Winnie ho femor~l head. The plate 26 ~i~fln~ an intro b~21 32 di8po~Qd in thy opening 3û. Tube bay 8 I; iEormed lo bore 34 wending there~hrouqll. A f first end 36 of the I screw LO Dodd in Tao bore I when a ~ec3nd threaded end 38 it threaded into the femoral head fox f i~zation Thor The f irrupt end 36 it slowed at I Jo that a . screwdriver or the like can be utilized to advance the lag grew into the femor~l head. A pudgy 42 thin 'Shea lug screw 22 is provided with a threaded internal surface at the f irrupt 80 that the compression screw 24 it engage able eighth.
Thy ~ompre~BiOn screw 24 Proms a î tango I which abut a shoulder 46 on thy barrel 32 when the compre6l3ion screw I 1 ' sully engaged with the lag screw 22.
it In a~cor~lance with the it notion, the lag screw it .1 provided with a pelf of recesses 50 and 52 and the barrel 32 it privily with a grower 54. The pelf ox recesses 50 and 52 are I disposed on opposite sides of the lag strew Chile the groove So ! it disposed OX the inferior side 33 of the barrel. A a result the superior wide 35 of the barrel 32, viewing Figures 1 and 2, Dunn a unl~orm cylindrical profile with constant radial thickness R. The pin 28 f it within the grower 54 and extends into the bore 34 to Lowe f it within one of the ruses 50 or l, 52. Preferably. the groove 54 it dirll~n6ioned to rove 75% of thy pus ~iarnet~r an the pair of Roy it diminuendo Jo ra!~c~lve 25~ of thy pun dlametsr. In order to Ryan the pin ¦ I lo~tuainally ache groove I a pair of proje~tiLons 56 j Noah I art o'er t two end of the groove 54. The Err of 30 I proje~t~on~ o'er slit interference with thy pin Jo that the pin con be force onto the groove but the pin will not freely If . . .. ... _ I
withdraw from the grower. Therefore, the yin it y~Qldably retainer in toe Roy. The wall of tile groove 54 partially j overleap tile do eater of the pin 28 to prevent rudely I ~lthdrawal Thor.
S I, Thy tetehnlqu~ espied nereinaft*r one way kiwi I at ho ~ompr~ on hip screw 20 to the furrier 10. Other ¦¦ te~hrllque~ ore feasibly on view of o~thopaedic surgeon I pr~r~ncQs Ed the characteristics of toe femur fracture. The ¦ 01?2niSlg 30 ~13 prude by a ~u~tabl~ tool, such as a reamer.
101! Thy aye screw 22 it awkward to I e femaral heckle 12 in& the opining 30 by rotating the lag screw 22 for advancement in the if opening 30 to a predetermined location. For a "keyed insertion, thy pin 28 disposed in the groove 54 and ye I bfirrel 32 it aligned with the lag screw 22 for insertion of the 15' litter in born 34. IT the reseizes 50 or 52 are no aligned with pin 2B, the barrel 32 and plate 26 are rotated us he , pin zap I tree to advance unto either recess. with the barrel ugly disposed it tile opening 30, the plate 26 and barrel 3 If are rotated to Further secure the lag screw 22 to the femoral 20" head 12. when the plate it adjacent the femur, the bone Russ 25 are astound to the femur to fixedly tush toe plate thereto. Thereafter the ~ompre6aion Syria 24 is thread ably coupled Jo the lag screw I 60 that the femoral head 12 it biased it eo~pre~lon toward the barrel to eliminate or wreck any polka at the fracture I Alternatively, the mprQs~lon sow I on be Seward before the bone grew 25 attuned to thy femur. For a yule inrush the barrel '32 it avenues into the opined 30 over the lug grew without if thy pun 28 it thy grow I with the barrel 32 in ho opening 30, 30, ho plats no barrel 32 I rotated until tube groove 5 new iota zither ryes 50 or 520 Thy pie ye en I
I I . . . . .
erred into tile Roy 54 and one of the ruckuses to prevent If rakish between thy barrel 32 and thy lay Roy 22.
Thereafter 'eke barrel 32 end plot 26 ore Rudy 'co further cure tub 1~9 cry I to the femoral heal 12 and n the to 26 with the Syria 10.
ilAlthough eye foregoing description prop use of the pin I it it pO13Bible to utilize the lay screw 22, tile empower screw 24, the plate 26, no the be net 32 in the If absence of the pin 28, should the orthopaedi~ surgeon prefer I "koalas compression lo screw. If Tao orthopedic surgeon elect to omit the pun I the ~tructurQ for the barrel 32 and lo lag screw 22 retain the uniform cylindrical profile ox constant radial thickness for eke barrel 32 Jo that the een~ion , Lowe impurity to the barrel are evenly distribute. Moreover, 15 ! the lag cry 22 provides a robust structure with only minor , ~aterlal removed for the ~ece6ses 50 and 52, whether the pin I
ill UDOd ox lot .
Claims (13)
1. A compression hip screw for fixation of a femoral head in a femur, the compression hip screw comprising a plate adapted for attachment to the femur, the plate including a barrel extending into an opening, the opening being formed in the femur and the femoral head, the barrel defining a bore extending therethrough, a first member coupled to the femoral head and extending into the barrel bore, a second member cooperating with the first member to oppose withdrawal of the barrel from the opening, and locking means cooperating with the first member and the barrel to limit rotation between the barrel and the first member, characterized in that the barrel defines an inferior side adjacent the portion of the plate attached to the femur and a superior side remote from the plate portion, the locking means comprising a groove defined in the barrel on the inferior side and a pin disposed in the groove, the pin extending into the barrel bore, and the first member defining a recess for receiving the pin whereby the pin forms an interference fit with the first member and the barrel.
2. The compression hip screw of Claim 1 in which the pin and the groove extend substantially the length of the barrel to transmit loads over the length of the barrel when rotation is initiated between the first member and the barrel.
3. The compression hip screw of Claim 1 in which the second member oppose withdrawal of the pin from the groove when the second member is cooperating with the first member.
4. The compression hip screw of Claim 1 in which the first member is slotted at a first end and the recess aligns with the slot to extend therefrom.
5. The compression hip screw of Claim 1 in which the barrel defines a shoulder in abutment with the second member and the groove extends from the shoulder to a proximal end of the barrel.
6. The compression hip screw of Claim 5 in which the pin is compactly confined to an interface between the barrel and the first member in spaced relation to the shoulder.
7. The compression hip screw of Claim 1 in which the barrel defines means to yieldably retain the pin in the groove and the pin extends substantially to a leading end of the barrel in order to provide for alignment between the first member slot and the pin when the barrel is initially fitted over the first member.
8. The compression hip screw of Claim 1 in which the groove forms the only interruption in a substantially uniform cylindrical surface for the barrel, and the barrel defines a constant radical thickness apart from the groove from the bore to an outer surface for the barrel.
9. The compression hip screw of Claim 1 in which the first member recess extends from a first member not adjacent the threads whereby minimal material is removed from the first member to form the recess and accommodate the pin.
10. A compression hip screw for fixation of a femoral head in a femur bone, the compression hip screw comprising a plate adapted for attachment to the femur, the plate leading superiorly to a barrel extending into an opening, the opening being provided on the femur and the femoral head, a pair of members cooperating with the femoral head and the barrel to retain the femoral head connected to the femur and oppose withdrawal of the barrel from the opening, the barrel superior side being loaded in tension during a normal walking mode for the hip, the barrel inferior side being loaded in compression during a normal walking mode for the hip and locking means cooperating with one of the pair of members and barrel to oppose rotation between the one member and the barrel, the locking means cooperating with the barrel solely on the inferior side in order to provide a uniform cylindrical profile of constant radial thickness for the superior side of the barrel in the absence of holes through the radical thickness, whereby the tension imparted to the superior side of the barrel is spread evenly over the uniform cylindrical profile of constant radial thickness.
11. The compression hip screw of Claim 10 in which the locking means comprises a pin extending into a groove formed by the barrel and a recess formed by the one member.
12. The compression hip screw of Claim 11 in which the one member is slotted at a distal and and the recess extends in a proximal directional from the slot.
13. The compression hip screw of Claim 12 in which the one member is provided with threads at a proximal end engaging the femoral head, the recess is spaced from the threads, and the groove extends the length of the barrel to accommodate the pin over the length of the barrel while limiting the recess to a length shorter than the length of the one member.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US668,782 | 1984-11-06 | ||
| US06/668,782 US4612920A (en) | 1984-11-06 | 1984-11-06 | Compression hip screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1239754A true CA1239754A (en) | 1988-08-02 |
Family
ID=24683716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000494515A Expired CA1239754A (en) | 1984-11-06 | 1985-11-04 | Compression hip screw |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US4612920A (en) |
| JP (1) | JPS61159955A (en) |
| KR (1) | KR890000923B1 (en) |
| AU (1) | AU567624B2 (en) |
| BE (1) | BE903589A (en) |
| BR (1) | BR8505526A (en) |
| CA (1) | CA1239754A (en) |
| ES (1) | ES296764Y (en) |
| FR (1) | FR2572648B1 (en) |
| GB (1) | GB2166359B (en) |
| IT (1) | IT1182955B (en) |
| MX (1) | MX163082B (en) |
| NL (1) | NL8503024A (en) |
Families Citing this family (109)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2173104B (en) * | 1984-02-28 | 1987-11-25 | Peter John Webb | Spinal fixation apparatus |
| DE3538346C2 (en) * | 1985-10-29 | 1996-07-11 | Ingo Kliefoth | Hip prosthesis |
| US4854311A (en) * | 1986-01-09 | 1989-08-08 | Acro Med Corporation | Bone screw |
| US4733654A (en) * | 1986-05-29 | 1988-03-29 | Marino James F | Intramedullar nailing assembly |
| US4795473A (en) * | 1987-01-09 | 1989-01-03 | Grimes James B | Extramedullary femoral head-neck prosthesis and method of implanting same |
| DE8900121U1 (en) * | 1989-01-04 | 1990-02-15 | Mecron Medizinische Produkte Gmbh, 1000 Berlin, De | |
| US5087260A (en) * | 1989-09-15 | 1992-02-11 | Fixel Irving E | Total femoral hip system |
| US5057108A (en) * | 1990-01-12 | 1991-10-15 | Zimmer, Inc. | Method of surface finishing orthopedic implant devices |
| US5041116A (en) * | 1990-05-21 | 1991-08-20 | Wilson James T | Compression hip screw system |
| US5100405A (en) * | 1990-09-07 | 1992-03-31 | Mclaren Alexander C | Locking cap for medical implants |
| JPH04138152A (en) * | 1990-09-29 | 1992-05-12 | Ikufumi Yamada | Internal fixing tool for collum humeri fracture |
| US5122133A (en) * | 1990-10-26 | 1992-06-16 | Smith & Nephew Richards Inc. | Compression screw for a joint endoprosthesis |
| US5108449A (en) * | 1990-12-31 | 1992-04-28 | Gray Frank B | Femoral component for a hip prosthesis |
| AT398529B (en) * | 1991-01-25 | 1994-12-27 | Winkler Heinz Dr | ENDOPROTHESIS, ESPECIALLY THE HIP JOINT |
| US5514138A (en) * | 1991-02-08 | 1996-05-07 | Pfizer Inc. | Connector having a stop member |
| GB9113578D0 (en) * | 1991-06-24 | 1991-08-14 | Howmedica | Intramedullary intertrochanteric fracture fixation appliance |
| SE9102216D0 (en) * | 1991-07-23 | 1991-07-23 | Astra Ab | HIP JOINT PROSTHESIS |
| US5324292A (en) * | 1993-02-10 | 1994-06-28 | Zimmer, Inc. | Fracture fixation assembly with selectively removable protrusion |
| US5326376A (en) * | 1993-08-23 | 1994-07-05 | Zimmer, Inc. | Femoral stem prosthesis |
| FR2735010B1 (en) * | 1995-06-07 | 1997-12-05 | Worcel Alexandre | RING OF OSTEOSYNTHESIS USABLE IN COMBINATION WITH A SPINDLE OR A SCREW, AND ANCILLARY FOR ITS COMPRESSION. |
| FR2737968B1 (en) * | 1995-08-23 | 1997-12-05 | Biomat | IMPLANT FOR OSTEOSYNTHESIS OF SUPERIOR FEMALE EPIPHYSIS |
| US5658339A (en) | 1996-01-05 | 1997-08-19 | Wright Medical Technology, Inc. | Compression hip screw plate |
| DE19601340C1 (en) * | 1996-01-16 | 1997-06-05 | Eska Implants Gmbh & Co | Endoprosthesis for neck of femur for artificial hip joint |
| US5849004A (en) * | 1996-07-17 | 1998-12-15 | Bramlet; Dale G. | Surgical anchor |
| DE29804268U1 (en) | 1998-03-11 | 1998-05-14 | Synthes Ag | Spiral blade insertion instrument |
| DE19904126A1 (en) * | 1999-02-03 | 2000-08-10 | Ceramtec Ag | Hip endoprosthesis in which at least the articulation surface of the femoral head is replaced |
| 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 |
| FR2824261B1 (en) | 2001-05-04 | 2004-05-28 | Ldr Medical | INTERVERTEBRAL DISC PROSTHESIS AND IMPLEMENTATION METHOD AND TOOLS |
| FR2827156B1 (en) | 2001-07-13 | 2003-11-14 | Ldr Medical | VERTEBRAL CAGE DEVICE WITH MODULAR FASTENING |
| US6916323B2 (en) * | 2001-08-21 | 2005-07-12 | Depuy Products, Inc. | Method and apparatus for percutaneously securing a bone screw and a bone plate to a bone of a patient |
| US6835197B2 (en) * | 2001-10-17 | 2004-12-28 | Christoph Andreas Roth | Bone fixation system |
| DE10223474A1 (en) * | 2002-05-27 | 2003-12-18 | Ulrich Muender | Cementless implant of the endoprosthetic replacement of the neck of the femur involves femur implant and bolts fitting though holes |
| FR2846550B1 (en) | 2002-11-05 | 2006-01-13 | Ldr Medical | INTERVERTEBRAL DISC PROSTHESIS |
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-
1984
- 1984-11-06 US US06/668,782 patent/US4612920A/en not_active Expired - Lifetime
-
1985
- 1985-10-29 AU AU49158/85A patent/AU567624B2/en not_active Expired
- 1985-11-04 KR KR1019850008190A patent/KR890000923B1/en not_active IP Right Cessation
- 1985-11-04 CA CA000494515A patent/CA1239754A/en not_active Expired
- 1985-11-04 IT IT48742/85A patent/IT1182955B/en active
- 1985-11-05 MX MX498A patent/MX163082B/en unknown
- 1985-11-05 FR FR858516367A patent/FR2572648B1/en not_active Expired - Lifetime
- 1985-11-05 BR BR8505526A patent/BR8505526A/en unknown
- 1985-11-05 GB GB08527197A patent/GB2166359B/en not_active Expired
- 1985-11-05 JP JP60246428A patent/JPS61159955A/en active Granted
- 1985-11-05 NL NL8503024A patent/NL8503024A/en not_active Application Discontinuation
- 1985-11-05 BE BE0/215826A patent/BE903589A/en not_active IP Right Cessation
- 1985-11-06 ES ES1985296764U patent/ES296764Y/en not_active Expired
Also Published As
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|---|---|
| GB2166359A (en) | 1986-05-08 |
| US4612920A (en) | 1986-09-23 |
| JPH0461658B2 (en) | 1992-10-01 |
| FR2572648B1 (en) | 1991-05-03 |
| ES296764Y (en) | 1988-10-01 |
| MX163082B (en) | 1991-08-19 |
| BR8505526A (en) | 1986-08-12 |
| GB8527197D0 (en) | 1985-12-11 |
| KR890000923B1 (en) | 1989-04-14 |
| KR860003821A (en) | 1986-06-13 |
| IT1182955B (en) | 1987-10-05 |
| ES296764U (en) | 1988-01-16 |
| IT8548742A0 (en) | 1985-11-04 |
| AU4915885A (en) | 1986-05-15 |
| FR2572648A1 (en) | 1986-05-09 |
| AU567624B2 (en) | 1987-11-26 |
| JPS61159955A (en) | 1986-07-19 |
| BE903589A (en) | 1986-05-05 |
| NL8503024A (en) | 1986-06-02 |
| GB2166359B (en) | 1988-11-23 |
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