WO2010061410A1 - Modular osteosynthesis hook plate - Google Patents

Modular osteosynthesis hook plate Download PDF

Info

Publication number
WO2010061410A1
WO2010061410A1 PCT/IT2008/000728 IT2008000728W WO2010061410A1 WO 2010061410 A1 WO2010061410 A1 WO 2010061410A1 IT 2008000728 W IT2008000728 W IT 2008000728W WO 2010061410 A1 WO2010061410 A1 WO 2010061410A1
Authority
WO
WIPO (PCT)
Prior art keywords
hook
flat body
osteosynthesis
screw
plate
Prior art date
Application number
PCT/IT2008/000728
Other languages
French (fr)
Inventor
Nilli Del Medico
Piero Costa
Original Assignee
Intrauma S.R.L
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Intrauma S.R.L filed Critical Intrauma S.R.L
Priority to PCT/IT2008/000728 priority Critical patent/WO2010061410A1/en
Publication of WO2010061410A1 publication Critical patent/WO2010061410A1/en

Links

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
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8023—Variable length plates adjustable in both directions
    • 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
    • A61B17/8033—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers
    • 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
    • A61B17/8061—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones
    • 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

Definitions

  • the present invention relates to an osteosynthesis hook plate.
  • This kind of plate is particularly used in the treatment of fractures of femur proximal epiphysis (or head).
  • the osteosynthesis is an orthopaedic technique for fracture treatment that provides for the stabilization of the bone fracture through means (for instance metallic means) that are surgically inserted into the fractured bone and that are capable of maintaining the bone immobilised until it consolidates.
  • means for instance metallic means
  • suitable shaped monolithic plates are known, that are provided with holes for fastening screws and compression screws.
  • Such an osteosynthesis plate is disclosed for instance in patent application WO 01/91660.
  • hook plates like the plate shown in Figure 1 are known.
  • Plate 101 of Figure 1 includes a Hat body 103 having an elongated shape and provided with a first plurality of through-holes 105 for fastening screws 107 fastening the plate to femur 100 and with a second plurality of through-holes 109 - provided at the femur proximal epiphysis - for compression screws 1 1 1.
  • said plate 101 further includes a hook 1 13 provided with a pair of hooking elements 1 15 that engage with the trocanther of femur 100.
  • osteosynthesis plates of the kind shown in Figure 1 have non-negligible drawbacks. More particularly, it is evident that it is not possible to adjust plate 101 according to the shape and size of the patient's femur and trocanther so as to fit it to the anatomical contour of the fractured bone.
  • the main object of the present invention is to overcome the aforesaid drawback of prior art by providing an osteosynthesis hook plate capable of being adjusted so as to fit the anatomical contour of femurs having different shapes and sizes.
  • the body of the plate and the hook are separate pieces, that can assume different relative positions with respect to each other and then be rigidly fastened, the plate according to the invention can fit femurs with different shapes and sizes, having trocanthers with different shapes and sizes.
  • the osteosynthesis plate further includes a plurality of modular transversal supports for inserting cortical screws into the fractured bone laterally with respect to the plate flat body.
  • osteosynthesis plate according to the invention involves considerable advantages, both technical and economical, since with a little number of parts it is possible to obtain osteosynthesis hook plates lining a large number of femurs having different shapes and sizes. Further features and advantages of the invention will be evident from the detailed description of the preferred embodiments of the invention, given by way of non-limiting example, with reference to the attached drawings, wherein:
  • FIG. 1 shows an osteosynthesis hook plate according to prior art
  • FIG. 2 shows an osteosynthesis hook plate according to a first embodiment of the invention, before being assembled
  • Figure 3 shows an osteosynthesis hook plate according to a first embodiment of the invention, after having been assembled
  • FIG. 4A is a front view of the hook of the plate of Figure 2 - 3;
  • Figure 4B is a rear view of the hook of Figure 4A;
  • - Figures 5 to 9 show subsequent steps of the method of applying the osteosynthesis hook plate of Figures 2 and 3 to a femur;
  • FIG. 10 shows an osteosynthesis hook plate according to a second embodiment of the invention, after having been assembled
  • FIG. 1 I A is a perspective view of the flat body of the osteosynthesis hook plate of Figure 10;
  • Figure 1 1 B is a side view of the flat body of the osteosynthesis hook plate of Figure 10;
  • FIG. 12A is a perspective view of a transversal support of the osteosynthesis hook plate of Figure 10;
  • - Figure 12B is a side view of a support for cortical screws of the osteosynthesis hook plate of Figure 10.
  • the osteosynthesis hook plate 1 according to the invention includes a Hat body 3 having an elongated shape and provided with first through-holes 5 for fastening screws 7 for fastening the plate 1 to a bone and second through-holes 9 for compression screws 1 1 for applying a compression force on the fractured fragments of said bone; the plate 1 further includes a hook 13 provided with hooking elements 15, suitable for engaging and gripping the bone itself.
  • said flat body 3 and said hook 13 are made of metal, preferably titanium.
  • said flat body 3 and said hook 13 are separate pieces that can assume different relative positions with respect to each other and be rigidly fastened through suitable connecting means.
  • said connecting means include a connecting screw 17 which passes through a slot 19 provided in the hook 13 and is screwed inside a hole 21 provided in the flat body 3, thus fastening said hook 13 against said flat body 3.
  • the slot 19 is open at its back.
  • the end of the flat body 3 closer to said second through-holes 9 has a tapered portion 23 for guiding the hook 13, the hole 21 receiving the connecting screw 17 being provided in this tapered portion.
  • other suitable connecting means can also be employed, provided that they allow the flat body 3 and the hook 13 to assume different relative positions with respect to each other.
  • the plate according to the invention is suitable for treating femur fractures, namely fractures of the femur proximal epiphysis (or head).
  • the flat body 3 of the plate 1 will be sized so that it can be applied to a femur, the first through-holes 5 for the fastening screws 7 being positioned at the femur diaphysis (or body) and the second through-holes 9 for the compression screws 1 1 being positioned at the femur proximal epiphysis.
  • the hook 13, in turn, will be sized so that its hooking elements 15 clasp and grip the femur trocanther so as to facilitate the correct positioning of plate 1.
  • Said hook 13 is shown in greater detail in Figures 4A and 4B, wherein the hooking elements 15 provided at one end of said hook and shaped so as to grip the trocanther can be clearly seen.
  • the slot 19 is provided, which is open at its back for connection to the flat body 3 of the plate 1 : it is evident that, thanks to the length of the slot 19, the hook 13 can assume different positions with respect to said flat body before being rigidly fastened thereto by means of the connecting screw 17, so that the plate 1 can fit the anatomical contour of femurs with different shapes and sizes.
  • the hook 13 is provided at the slot 19 with a pair of side rails 25 that can slide along the side walls of the guiding portion 23 of the flat body 3, so as to facilitate the alignment of the hook 13 with said flat body and avoid the relative rotation thereof.
  • the through-hole 27 provided for an optional cortical screw can also be clearly seen.
  • the body 3 of the plate 1 is applied to the diaphysis of the femur 10 ( Figure 5). Then, in a known way, the compression screws 1 1 are inserted with the aid of suitable guide-wires through the through-holes 9 of the fiat body 3 into cavities previously obtained in the femur 10 ( Figure 6).
  • the connecting screw 17 is inserted in the hole 21 provided in the guiding portion 23 of the flat body 3, without being tightened ( Figure 7).
  • the hook 13 is brought close to the Hat body 3, it is aligned thereto by means of side rails 25 and it is made to slide thereon until it reaches the position wherein it correctly clasps and grips the trocanther of femur 10; at this stage, since the connecting screw 17 is still loose, the slot 19 of the hook 13 can freely translate with respect to the connecting screw stem without any impediment ( Figure 8).
  • the connecting screw 17 is tightened, so as to fasten the hook 13 against the Hat body 3 and therefore rigidly couple together said hook and body.
  • the osteosynthesis hook plate T includes a fiat body 3' having an elongated shape and provided with first through-holes 5' for fastening screws 7 " and second through-holes 9' for compression screws 1 1 '; the plate 1 ' further includes a hook 13' provided with hooking elements 15", said flat body 3' and said hook 13 " being separate elements that can assume different relative positions with respect to each other and be rigidly coupled through suitable fastening means.
  • the fiat body 3' further includes a plurality of depressed and flattened transversal portions 29 " , provided with a threaded hole 31 ', intended to receive corresponding transversal screw-carrying supports 33 " .
  • said screw-carrying supports 33 " will be preferably made of titanium.
  • the screw-carrying supports 33 " - also shown in greater detail in Figures 12A and 12B - include a central portion 33a " . that is intended for being received in a depressed and flattened transversal portions 29 * of the flat body 3 " and to this aim has an outline and sizes which are complementary to the one of said transversal portions 29 * .
  • Connecting means are provided for rigidly fastening the central portion 33a' of a screw- carrying support 33 " against a corresponding depressed transversal portion 29 * of the flat body 3".
  • said connecting means comprise a connecting screw 41 ' passing through a through-hole 39 * provided in the central portion 33a' of the screw- carrying support 33 ' and suitable for being screwed in the underlying threaded hole 31 ' of the transversal portion 29 " of the flat body 3'.
  • any other suitable connecting means for fastening the screw-carrying support 33' against a corresponding transversal portion 29 " can also be used.
  • the screw-carrying supports 33 " further comprise two side portions 33b “ . inclined with respect to said central portion 33a " and each provided with a corresponding through-hole 35 " for a cortical screw 37 * .
  • two cortical screws 37 " one at each side of the flat body 3', can be inserted in the through-holes 35 ' of the support 33 " and screwed in the fractured bone.
  • the screws 37 * will easily penetrate into the fractured bone, thus contributing to steadily maintain the osteosynthesis plate 1 ' in the correct position, as well as to apply a compression force onto the separated parts of the fractured bone.
  • the modular structure of the plate 1 " comprising on one hand a flat body provided with a plurality of depressed and flattened transversal portions 29 " and on the other hand separate screw-carrying supports 33 " , it will be possible, case by case, to associate to the flat body 3' the desired number of screw-carrying supports 33', which can be placed in the optimal position with respect to the flat body 3' for the specific needs of each single case.
  • the flat body 3' of the plate 1 " will be sized so that it can be applied to a femur; the hook 13', in turn, will be sized so that its hooking elements 15' clasp and grip the femur trocanther; finally, a suitable number of screw-carrying supports 33' will be rigidly associated to the flat body 3', in number and positions depending on the specific surgery intervention.
  • the modular structure of the osteosynthesis hook plate according to the invention provides for increased versatility and capability of fitting femurs having different shapes and sizes.
  • using the hook plate according to the invention assures on one hand a greater adhesion of the plate to the anatomical contour of the fractured bone and on the other hand the opportunity of obtaining, by using a limited number of parts, osteosynthesis hook plates fitting a large number of femurs having different shapes and sizes.

Abstract

The present invention relates to an osteosynthesis hook plate ( 1; 1') suitable for the treatment of femur fractures, more particularly of fractures of the femur proximal epiphysis. According to the invention, said plate ( 1; T) comprises a Hat body (3;3') having an elongated shape and provided with first through-holes (5;5') for fastening screws (7;7') and second through-holes (9;9') for compression screws ( 1 1; 1 1') and a hook ( 13; 13') provided with hooking elements ( 15; 15'), said flat body (3;3') and said hook (13;13') being separate pieces that can be rigidly fastened to each other in different relative positions. According to a preferred embodiment of the invention, said plates further comprises a plurality of depressed and flattened transversal portions (29') and transversal screw-carrying supports (33'), said screw-carrying supports (33') being separate pieces which can be rigidly fastened to the flat body of said plate in the desired number and positions.

Description

"Modular osteosynthesis hook plate"
DESCRIPTION
The present invention relates to an osteosynthesis hook plate.
This kind of plate is particularly used in the treatment of fractures of femur proximal epiphysis (or head).
The osteosynthesis is an orthopaedic technique for fracture treatment that provides for the stabilization of the bone fracture through means (for instance metallic means) that are surgically inserted into the fractured bone and that are capable of maintaining the bone immobilised until it consolidates. Among the means used in osteosynthesis, and more particularly in the treatment of fractures of long bones such as shinbone and femur, suitable shaped monolithic plates are known, that are provided with holes for fastening screws and compression screws. Such an osteosynthesis plate is disclosed for instance in patent application WO 01/91660. For fractures in the trocanther region, i.e. at the proximal epiphysis of the femur, hook plates like the plate shown in Figure 1 are known.
Plate 101 of Figure 1 includes a Hat body 103 having an elongated shape and provided with a first plurality of through-holes 105 for fastening screws 107 fastening the plate to femur 100 and with a second plurality of through-holes 109 - provided at the femur proximal epiphysis - for compression screws 1 1 1. For a correct positioning of plate 101 - and particularly of compression screws 1 1 1 - and for an appropriate reduction of the fracture, said plate 101 further includes a hook 1 13 provided with a pair of hooking elements 1 15 that engage with the trocanther of femur 100. However, osteosynthesis plates of the kind shown in Figure 1 have non-negligible drawbacks. More particularly, it is evident that it is not possible to adjust plate 101 according to the shape and size of the patient's femur and trocanther so as to fit it to the anatomical contour of the fractured bone.
As a consequence, it is necessary to manufacture a large number of plates having different shapes and sizes, so as to take into account the different bone structures of different patients. Indeed, said plates are usually marketed in kits containing a large number of items, each having different shape and size.
The main object of the present invention is to overcome the aforesaid drawback of prior art by providing an osteosynthesis hook plate capable of being adjusted so as to fit the anatomical contour of femurs having different shapes and sizes.
This and other objects are achieved by an osteosynthesis hook plate according to the invention, as claimed in the appended claims.
Thanks to the fact that according to the invention the body of the plate and the hook are separate pieces, that can assume different relative positions with respect to each other and then be rigidly fastened, the plate according to the invention can fit femurs with different shapes and sizes, having trocanthers with different shapes and sizes.
Furthermore, thanks to its modular construction, hooks with different shapes and sizes can be associated to the same body of a plate according to the invention, according to specific requirements. According to a preferred embodiment of the invention, the osteosynthesis plate further includes a plurality of modular transversal supports for inserting cortical screws into the fractured bone laterally with respect to the plate flat body.
The possibility of inserting as many of said supports and in such positions as suitable for each surgery intervention further increases the versatility of the plate according to the invention. It is evident that the osteosynthesis plate according to the invention involves considerable advantages, both technical and economical, since with a little number of parts it is possible to obtain osteosynthesis hook plates lining a large number of femurs having different shapes and sizes. Further features and advantages of the invention will be evident from the detailed description of the preferred embodiments of the invention, given by way of non-limiting example, with reference to the attached drawings, wherein:
- Figure 1 shows an osteosynthesis hook plate according to prior art;
- Figure 2 shows an osteosynthesis hook plate according to a first embodiment of the invention, before being assembled;
Figure 3 shows an osteosynthesis hook plate according to a first embodiment of the invention, after having been assembled;
- Figure 4A is a front view of the hook of the plate of Figure 2 - 3; Figure 4B is a rear view of the hook of Figure 4A; - Figures 5 to 9 show subsequent steps of the method of applying the osteosynthesis hook plate of Figures 2 and 3 to a femur;
- Figure 10 shows an osteosynthesis hook plate according to a second embodiment of the invention, after having been assembled;
- Figure 1 I A is a perspective view of the flat body of the osteosynthesis hook plate of Figure 10;
- Figure 1 1 B is a side view of the flat body of the osteosynthesis hook plate of Figure 10;
- Figure 12A is a perspective view of a transversal support of the osteosynthesis hook plate of Figure 10; - Figure 12B is a side view of a support for cortical screws of the osteosynthesis hook plate of Figure 10.
According to Figures 2 and 3, according to the invention the osteosynthesis hook plate 1 according to the invention includes a Hat body 3 having an elongated shape and provided with first through-holes 5 for fastening screws 7 for fastening the plate 1 to a bone and second through-holes 9 for compression screws 1 1 for applying a compression force on the fractured fragments of said bone; the plate 1 further includes a hook 13 provided with hooking elements 15, suitable for engaging and gripping the bone itself. In general, said flat body 3 and said hook 13 are made of metal, preferably titanium. According to the invention, said flat body 3 and said hook 13 are separate pieces that can assume different relative positions with respect to each other and be rigidly fastened through suitable connecting means.
More particularly, according to the first preferred embodiment of the invention that is shown in Figures 2 and 3, said connecting means include a connecting screw 17 which passes through a slot 19 provided in the hook 13 and is screwed inside a hole 21 provided in the flat body 3, thus fastening said hook 13 against said flat body 3. Preferably, as illustrated, the slot 19 is open at its back.
Moreover, the end of the flat body 3 closer to said second through-holes 9 has a tapered portion 23 for guiding the hook 13, the hole 21 receiving the connecting screw 17 being provided in this tapered portion. By the way, it is to be noted that other suitable connecting means can also be employed, provided that they allow the flat body 3 and the hook 13 to assume different relative positions with respect to each other. Among other things, it is also possible to provide the slot in the plate body and the threaded hole for the connecting screw in the hook. As anticipated above, the plate according to the invention is suitable for treating femur fractures, namely fractures of the femur proximal epiphysis (or head). Thus, the flat body 3 of the plate 1 will be sized so that it can be applied to a femur, the first through-holes 5 for the fastening screws 7 being positioned at the femur diaphysis (or body) and the second through-holes 9 for the compression screws 1 1 being positioned at the femur proximal epiphysis. The hook 13, in turn, will be sized so that its hooking elements 15 clasp and grip the femur trocanther so as to facilitate the correct positioning of plate 1.
Said hook 13 is shown in greater detail in Figures 4A and 4B, wherein the hooking elements 15 provided at one end of said hook and shaped so as to grip the trocanther can be clearly seen. At the other end of the hook 13 the slot 19 is provided, which is open at its back for connection to the flat body 3 of the plate 1 : it is evident that, thanks to the length of the slot 19, the hook 13 can assume different positions with respect to said flat body before being rigidly fastened thereto by means of the connecting screw 17, so that the plate 1 can fit the anatomical contour of femurs with different shapes and sizes. Advantageously, according to the first embodiment of the invention shown in Figures 2 and 3, the hook 13 is provided at the slot 19 with a pair of side rails 25 that can slide along the side walls of the guiding portion 23 of the flat body 3, so as to facilitate the alignment of the hook 13 with said flat body and avoid the relative rotation thereof. In Figures 4A and 4B the through-hole 27 provided for an optional cortical screw can also be clearly seen.
With reference now to Figures 5 to 9, the method for applying a plate 1 according to the invention to a bone, namely to a femur 10, is shown.
At first, the body 3 of the plate 1 is applied to the diaphysis of the femur 10 (Figure 5). Then, in a known way, the compression screws 1 1 are inserted with the aid of suitable guide-wires through the through-holes 9 of the fiat body 3 into cavities previously obtained in the femur 10 (Figure 6).
The connecting screw 17 is inserted in the hole 21 provided in the guiding portion 23 of the flat body 3, without being tightened (Figure 7).
By means of pliers 20 or similar tools, the hook 13 is brought close to the Hat body 3, it is aligned thereto by means of side rails 25 and it is made to slide thereon until it reaches the position wherein it correctly clasps and grips the trocanther of femur 10; at this stage, since the connecting screw 17 is still loose, the slot 19 of the hook 13 can freely translate with respect to the connecting screw stem without any impediment (Figure 8). Once the hook 13 has been placed in the most appropriate position, the connecting screw 17 is tightened, so as to fasten the hook 13 against the Hat body 3 and therefore rigidly couple together said hook and body. Finally, the fastening screws 7 are inserted through the through-holes 5 of the body 3 into cavities obtained in the diaphysis of the femur 10 (Figure 9). With reference now to Figure 10, a second preferred embodiment of the osteosynthesis plate according to the invention is shown.
As disclosed above in connection with the first embodiment of the invention, the osteosynthesis hook plate T includes a fiat body 3' having an elongated shape and provided with first through-holes 5' for fastening screws 7" and second through-holes 9' for compression screws 1 1 '; the plate 1 ' further includes a hook 13' provided with hooking elements 15", said flat body 3' and said hook 13" being separate elements that can assume different relative positions with respect to each other and be rigidly coupled through suitable fastening means.
With reference also to Figure 1 1 A and 1 1 B, according to this second preferred embodiment of the invention, the fiat body 3' further includes a plurality of depressed and flattened transversal portions 29", provided with a threaded hole 31 ', intended to receive corresponding transversal screw-carrying supports 33". Also said screw-carrying supports 33" will be preferably made of titanium. The screw-carrying supports 33" - also shown in greater detail in Figures 12A and 12B - include a central portion 33a". that is intended for being received in a depressed and flattened transversal portions 29* of the flat body 3" and to this aim has an outline and sizes which are complementary to the one of said transversal portions 29*. Connecting means are provided for rigidly fastening the central portion 33a' of a screw- carrying support 33" against a corresponding depressed transversal portion 29* of the flat body 3". In the illustrated example, said connecting means comprise a connecting screw 41 ' passing through a through-hole 39* provided in the central portion 33a' of the screw- carrying support 33' and suitable for being screwed in the underlying threaded hole 31 ' of the transversal portion 29" of the flat body 3'. Obviously, any other suitable connecting means for fastening the screw-carrying support 33' against a corresponding transversal portion 29" can also be used.
The screw-carrying supports 33" further comprise two side portions 33b". inclined with respect to said central portion 33a" and each provided with a corresponding through-hole 35" for a cortical screw 37*. As clearly visible in Figure 10, once the screw-carrying support 33" has been fastened to the flat body 3', two cortical screws 37", one at each side of the flat body 3', can be inserted in the through-holes 35' of the support 33" and screwed in the fractured bone. Thanks to the inclination of the side portions 33b" of the support 33*, the screws 37* will easily penetrate into the fractured bone, thus contributing to steadily maintain the osteosynthesis plate 1 ' in the correct position, as well as to apply a compression force onto the separated parts of the fractured bone. Thanks to the modular structure of the plate 1 ", comprising on one hand a flat body provided with a plurality of depressed and flattened transversal portions 29" and on the other hand separate screw-carrying supports 33", it will be possible, case by case, to associate to the flat body 3' the desired number of screw-carrying supports 33', which can be placed in the optimal position with respect to the flat body 3' for the specific needs of each single case.
Thus, the flat body 3' of the plate 1 " will be sized so that it can be applied to a femur; the hook 13', in turn, will be sized so that its hooking elements 15' clasp and grip the femur trocanther; finally, a suitable number of screw-carrying supports 33' will be rigidly associated to the flat body 3', in number and positions depending on the specific surgery intervention.
It is evident from the above disclosure that the modular structure of the osteosynthesis hook plate according to the invention provides for increased versatility and capability of fitting femurs having different shapes and sizes. As a consequence, using the hook plate according to the invention assures on one hand a greater adhesion of the plate to the anatomical contour of the fractured bone and on the other hand the opportunity of obtaining, by using a limited number of parts, osteosynthesis hook plates fitting a large number of femurs having different shapes and sizes.
Moreover, it is evident that the above disclosure is given merely as a non-limiting example and that several modifications and variants can be carried out without departing from the scope of protection as defined by the appended claims.

Claims

1 . Osteosynthesis hook plate ( 1 : 1 *) comprising at least:
- a flat body (3:3") having an elongated shape and provided with tlrst through-holes (5;5*) for fastening screws (7;7") and second through-holes (9:9") for compression screws ( 1 1 ; 1 1 '); and
- a hook ( 13; 13') provided with hooking elements ( 15; 1 5*); characterized in that said flat body (3;3') and said hook (13; 13') are separate pieces that can assume a plurality of different relative positions with respect to each other and be rigidly fastened to each other in said different relative positions by suitable connecting means ( 17,19,21 ).
2. Osteosynthesis hook plate ( T) according to claim 1 , wherein said flat body (3') comprises a plurality of depressed and flattened transversal portions (29") and wherein said plate further comprises one ore more transversal screw-carrying supports (33'), said screw-carrying supports (33") being separate pieces with respect to said flat body and capable of being rigidly coupled thereto by suitable connecting means (39",41 ').
3. Osteosynthesis hook plate ( 1 ; 1 ") according to claim 1 or 2, wherein said connecting means between said flat body and said hook include a slot ( 19) provided in said hook ( 13), a threaded hole (21 ) provided in said flat body (3) and a connecting screw ( 1 7) passing through said slot ( 19) and screwed into said hole (21 ), thus fastening said hook ( 13) against said flat body (3).
4. Osteosynthesis hook plate ( 1 ; 1 ") according to claim 1 or 2, wherein said connecting means between said flat body and said hook include a slot provided in said flat body (3), a threaded hole provided in said hook ( 13) and a connecting screw passing through said slot and screwed into said hole, thus fastening said hook ( 13) against said flat body (3).
5. Osteosynthesis hook plate (1 :1 ) according to claim 3 or 4. wherein said Hat body (3) includes a tapered portion (23) for guiding the hook ( 13). said hole (21 ) receiving said connecting screw ( 1 7) being provided in said draft tapered portion.
6. Osteosynthesis hook plate (1 ;T) according to claim 5, wherein said hook ( 13) is provided with a pair of side rails (25) that are sized so that they can slide along the side walls of said guiding tapered portion (23).
7. Osteosynthesis hook plate (V) according to claim 2, wherein said connecting means between said flat body and said screw-carrying support comprise a through-hole (39') provided in said screw-carrying support (33'), a threaded hole (31 ') provided in said flat body at said transversal portion (29') and a connecting screw (41 ') passing through said through-hole (39') and screwed in said hole (31 '), thus fastening said screw-carrying support (33') against said transversal portion (29') of said flat body.
8. Osteosynthesis hook plate (1 ;1 ') according to claim 1 , wherein said hook (13; 13') comprises a through-hole (27) for a cortical screw.
9. Osteosynthesis hook plate (1 ') according to claim 2, wherein said screw-carrying support (33') comprises a central portion (33a') suitable for being received in said transversal portion (29') of said flat body and two side portions (33b'), each provided with a corresponding through-hole (35') for a cortical screw (37').
10. Osteosynthesis hook plate (1 ') according to claim 9, wherein said side portions (33b') are inclined with respect to said central portion (33a') of said screw-carrying support (33').
1 1 . Osteosynthesis hook plate (1 ) according to any of the preceding claims, wherein said flat body (3) and said hook ( 13) are made of metal, preferably titanium.
12. Osteosynthesis hook plate (T) according to claim 2, wherein said screw-carrying supports (33') are made of metal, preferably titanium.
1 3. Method tor applying an osteosynthesis hook plate ( 1 : 1 ") according to claim 3 to a fractured bone, more particularly to a femur ( 10), comprising the following steps: applying said Ωat body (3:3") of said plate ( 1 ; T) to said femur diaphysis or body; inserting compression screws ( 1 1 ;1 T) through said second through-holes (9;9') of said body (3;3') into cavities previously obtained in said femur (10); by means of pliers (20) or similar tools, bringing said hook (13; 13') close to said flat body (3;3'), aligning it to said flat body and making it slide with respect to said flat body to the desired position; rigidly fastening said hook (13; 13') and said flat body (3;3') to each other by said . connecting means (17,19,21); inserting fastening screws (7;7') through said first through-holes (5;5') of said flat body (3;3") into cavities previously obtained in said femur (10).
PCT/IT2008/000728 2008-11-25 2008-11-25 Modular osteosynthesis hook plate WO2010061410A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IT2008/000728 WO2010061410A1 (en) 2008-11-25 2008-11-25 Modular osteosynthesis hook plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2008/000728 WO2010061410A1 (en) 2008-11-25 2008-11-25 Modular osteosynthesis hook plate

Publications (1)

Publication Number Publication Date
WO2010061410A1 true WO2010061410A1 (en) 2010-06-03

Family

ID=40445292

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2008/000728 WO2010061410A1 (en) 2008-11-25 2008-11-25 Modular osteosynthesis hook plate

Country Status (1)

Country Link
WO (1) WO2010061410A1 (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012121830A1 (en) * 2011-03-04 2012-09-13 Synthes Usa, Llc Modular hook plate assembly
EP2564797A1 (en) * 2011-08-31 2013-03-06 Stryker Trauma SA Bone place with hook portion
US20130245699A1 (en) * 2011-09-06 2013-09-19 Jorge L. Orbay Fracture fixation plate, system and methods of use
WO2013152182A1 (en) 2012-04-05 2013-10-10 Orthohelix Surgical Designs, Inc. Lateral ankle fusion plate system and jig, and method for use therewith
JP2014046201A (en) * 2012-08-29 2014-03-17 Trimed Inc Holder/impactor for contoured bone plate for fracture fixation
JP2014046200A (en) * 2012-08-29 2014-03-17 Trimed Inc Contoured bone plate for fracture fixation having hook members and holder/impactor for same
FR3010300A1 (en) * 2013-09-10 2015-03-13 D L P Sarl PLATE FOR OSTEOSYNTHESIS OF THE UPPER END OF THE FEMUR
WO2015042392A1 (en) 2013-09-19 2015-03-26 Zlotolow Dan Variable angle blade plate system and method
CN105326550A (en) * 2014-08-11 2016-02-17 天津市康尔医疗器械有限公司 Acromioclavicular hook locking plate
CN105640631A (en) * 2014-11-13 2016-06-08 无锡市闻泰百得医疗器械有限公司 Improved bone plate structure
CN106344140A (en) * 2016-08-23 2017-01-25 江苏奥康尼医疗科技发展有限公司 Thighbone near-end bone fracture plate
EP3248556A1 (en) * 2012-08-30 2017-11-29 Wright Medical Technology, Inc. Implant suitable for calcaneal osteotomy
CN108836465A (en) * 2018-04-26 2018-11-20 朱由兵 A kind of fixed device of clinic bone fracture surgery lesser trochanter of femur
RU2681245C1 (en) * 2018-02-22 2019-03-05 Федеральное государственное бюджетное учреждение "Российский ордена Трудового Красного Знамени научно-исследовательский институт травматологии и ортопедии имени Р.Р. Вредена" Министерства здравоохранения Российской Федерации (ФГБУ "РНИИТО им. Р.Р. Вредена" Минздрава России) Fixer for osteosynthesis of greater trochanter
CN109620378A (en) * 2018-12-27 2019-04-16 创美得医疗器械（天津）有限公司 The location structure of implantation material
CN109620377A (en) * 2018-12-27 2019-04-16 创美得医疗器械（天津）有限公司 The fixation device of implantation material
US11123117B1 (en) 2011-11-01 2021-09-21 Nuvasive, Inc. Surgical fixation system and related methods

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3006518A1 (en) * 1980-02-19 1981-08-27 Mecron Medizinische Produkte Gmbh, 1000 Berlin DEVICE FOR FIXING A THIGH NECK ON THE SHAFT OF A THIGH BONE
US5591168A (en) * 1993-10-25 1997-01-07 Tornier S.A. Device for stabilizing fractures of the upper end of the femur
GB2331244A (en) * 1997-11-18 1999-05-19 Univ Hull Fracture fixation devices
WO2000067653A1 (en) * 1999-05-11 2000-11-16 S.I.N.A.I. Medical Technologies Ltd. Universal hip compression device
DE20109273U1 (en) * 2001-06-02 2001-08-30 Merete Medical Gmbh Device for stabilizing fractures
US20020143336A1 (en) * 2001-02-23 2002-10-03 Hearn James P. Sternum fixation device
WO2006028971A1 (en) * 2004-09-02 2006-03-16 Synthes (U.S.A) Translatable carriage fixation system
WO2006097729A1 (en) * 2005-03-17 2006-09-21 Desmond Meiring Dall Configurable bone fixation system
US20060235401A1 (en) * 2000-02-03 2006-10-19 Pioneer Laboratories, Inc. Apparatus and method for repairing the femur

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3006518A1 (en) * 1980-02-19 1981-08-27 Mecron Medizinische Produkte Gmbh, 1000 Berlin DEVICE FOR FIXING A THIGH NECK ON THE SHAFT OF A THIGH BONE
US5591168A (en) * 1993-10-25 1997-01-07 Tornier S.A. Device for stabilizing fractures of the upper end of the femur
GB2331244A (en) * 1997-11-18 1999-05-19 Univ Hull Fracture fixation devices
WO2000067653A1 (en) * 1999-05-11 2000-11-16 S.I.N.A.I. Medical Technologies Ltd. Universal hip compression device
US20060235401A1 (en) * 2000-02-03 2006-10-19 Pioneer Laboratories, Inc. Apparatus and method for repairing the femur
US20020143336A1 (en) * 2001-02-23 2002-10-03 Hearn James P. Sternum fixation device
DE20109273U1 (en) * 2001-06-02 2001-08-30 Merete Medical Gmbh Device for stabilizing fractures
WO2006028971A1 (en) * 2004-09-02 2006-03-16 Synthes (U.S.A) Translatable carriage fixation system
WO2006097729A1 (en) * 2005-03-17 2006-09-21 Desmond Meiring Dall Configurable bone fixation system

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9566097B2 (en) 2011-03-04 2017-02-14 DePuy Synthes Products, Inc. Modular hook plate assembly
WO2012121830A1 (en) * 2011-03-04 2012-09-13 Synthes Usa, Llc Modular hook plate assembly
JP2014514005A (en) * 2011-03-04 2014-06-19 シンセス・ゲーエムベーハー Modular hook plate assembly
US9072557B2 (en) 2011-03-04 2015-07-07 DePuy Synthes Products, Inc. Modular hook plate assembly
EP2564797A1 (en) * 2011-08-31 2013-03-06 Stryker Trauma SA Bone place with hook portion
US8961574B2 (en) 2011-08-31 2015-02-24 Stryker Trauma Sa Bone plate with hook portion
US20130245699A1 (en) * 2011-09-06 2013-09-19 Jorge L. Orbay Fracture fixation plate, system and methods of use
EP2753257A4 (en) * 2011-09-06 2015-11-04 Skeletal Dynamics Llc Fracture fixation plate, system and methods of use
JP2014530658A (en) * 2011-09-06 2014-11-20 スケルタル ダイナミクス エルエルシー Fracture fixation plate, system and method of use
US10603090B2 (en) 2011-09-06 2020-03-31 Skeletal Dynamics, Inc. Fracture fixation plate, system and methods of use
US11123117B1 (en) 2011-11-01 2021-09-21 Nuvasive, Inc. Surgical fixation system and related methods
WO2013152182A1 (en) 2012-04-05 2013-10-10 Orthohelix Surgical Designs, Inc. Lateral ankle fusion plate system and jig, and method for use therewith
US9421103B2 (en) 2012-04-05 2016-08-23 Orthohelix Surgical Designs, Inc. Lateral ankle fusion plate system and jig, and method for use therewith
EP2844152A4 (en) * 2012-04-05 2016-03-16 Orthohelix Surgical Des Inc Lateral ankle fusion plate system and jig, and method for use therewith
JP2014046200A (en) * 2012-08-29 2014-03-17 Trimed Inc Contoured bone plate for fracture fixation having hook members and holder/impactor for same
JP2014046201A (en) * 2012-08-29 2014-03-17 Trimed Inc Holder/impactor for contoured bone plate for fracture fixation
US10736645B2 (en) 2012-08-30 2020-08-11 Wright Medical Technology, Inc. Implant suitable for calcaneal osteotomy
EP3248556A1 (en) * 2012-08-30 2017-11-29 Wright Medical Technology, Inc. Implant suitable for calcaneal osteotomy
US9949744B2 (en) 2012-08-30 2018-04-24 Wright Medical Technology, Inc. Implant suitable for calcaneal osteotomy
WO2015036686A1 (en) * 2013-09-10 2015-03-19 D.L.P. Plate for osteosynthesis of the top end of the femur
FR3010300A1 (en) * 2013-09-10 2015-03-13 D L P Sarl PLATE FOR OSTEOSYNTHESIS OF THE UPPER END OF THE FEMUR
US10117689B2 (en) 2013-09-19 2018-11-06 Mcginley Engineered Solutions, Llc Variable angle blade plate system and method
EP3046490A4 (en) * 2013-09-19 2017-06-07 Zlotolow, Dan Variable angle blade plate system and method
US9833270B2 (en) 2013-09-19 2017-12-05 Mcginley Engineered Solutions, Llc Variable angle blade plate system and method
WO2015042392A1 (en) 2013-09-19 2015-03-26 Zlotolow Dan Variable angle blade plate system and method
CN105326550A (en) * 2014-08-11 2016-02-17 天津市康尔医疗器械有限公司 Acromioclavicular hook locking plate
CN105640631A (en) * 2014-11-13 2016-06-08 无锡市闻泰百得医疗器械有限公司 Improved bone plate structure
CN106344140A (en) * 2016-08-23 2017-01-25 江苏奥康尼医疗科技发展有限公司 Thighbone near-end bone fracture plate
CN106344140B (en) * 2016-08-23 2018-11-30 江苏奥康尼医疗科技发展有限公司 A kind of near end of thighbone bone plate
RU2681245C1 (en) * 2018-02-22 2019-03-05 Федеральное государственное бюджетное учреждение "Российский ордена Трудового Красного Знамени научно-исследовательский институт травматологии и ортопедии имени Р.Р. Вредена" Министерства здравоохранения Российской Федерации (ФГБУ "РНИИТО им. Р.Р. Вредена" Минздрава России) Fixer for osteosynthesis of greater trochanter
CN108836465A (en) * 2018-04-26 2018-11-20 朱由兵 A kind of fixed device of clinic bone fracture surgery lesser trochanter of femur
CN109620377A (en) * 2018-12-27 2019-04-16 创美得医疗器械（天津）有限公司 The fixation device of implantation material
CN109620378A (en) * 2018-12-27 2019-04-16 创美得医疗器械（天津）有限公司 The location structure of implantation material
CN109620378B (en) * 2018-12-27 2021-12-24 创美得医疗器械（天津）有限公司 Positioning structure of implant
CN109620377B (en) * 2018-12-27 2021-12-24 创美得医疗器械（天津）有限公司 Implant fixing device

Similar Documents

Publication Publication Date Title
WO2010061410A1 (en) Modular osteosynthesis hook plate
US10993751B1 (en) Orthopedic implant in the form of a plate to be fixed between two bone parts
US8915918B2 (en) Bone plate system for bone restoration and methods of use thereof
US20150209093A1 (en) Implantable medical device for restoring alignment and stabilizing bone fractures and methods of using the same
US10828067B2 (en) Compressive distal humerus plating system
US8608783B2 (en) Bone plate with flange member and methods of use thereof
US8628533B2 (en) Bone plate with reduction aids and methods of use thereof
US3741205A (en) Bone fixation plate
US5931839A (en) Pin plate for fixation of bone fractures
US6325803B1 (en) Method and apparatus for mandibular osteosynthesis
US8062296B2 (en) Modular fracture fixation plate system with multiple metaphyseal and diaphyseal plates
US9962204B2 (en) Modular bone plate
US20090275987A1 (en) Bone plate extender and extension system for bone restoration and methods of use thereof
US20040102775A1 (en) Bone plates with slots
CA2983488A1 (en) Clavicle implants
US20120010667A1 (en) Fracture-specific distal radius plates
JP2011156386A (en) Bone plate
US7427283B2 (en) Surgical fixation device
WO2007044391A3 (en) Bone alignment implant and method of use
US8083783B2 (en) Surgical fixation pin
US20120016366A1 (en) Proximal Radius Locking Plate
US9968389B2 (en) Fracture plating
IL193043A (en) Fracture fixation device and implantation jig therefor
US20180193071A1 (en) Plate for synthesis of a bone fracture, kit incorporating that plate and method for synthesis of a fractured bone
US20120158005A1 (en) Guide device for insertion of blocking screws used to align insertion of intramedullary nail

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08876109

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08876109

Country of ref document: EP

Kind code of ref document: A1