WO2018069554A1 - Conjunto de enclavado intramedular de ángulo variable para el tratamiento de fracturas de fémur - Google Patents
Conjunto de enclavado intramedular de ángulo variable para el tratamiento de fracturas de fémur Download PDFInfo
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- WO2018069554A1 WO2018069554A1 PCT/ES2016/000110 ES2016000110W WO2018069554A1 WO 2018069554 A1 WO2018069554 A1 WO 2018069554A1 ES 2016000110 W ES2016000110 W ES 2016000110W WO 2018069554 A1 WO2018069554 A1 WO 2018069554A1
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- nail
- screw
- variable angle
- femur
- proximal
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- 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
- A61B17/748—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 with means for adapting the angle between the longitudinal elements and the shaft axis of the femur
-
- 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
- A61B17/744—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 an intramedullary nail
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/14—Surgical saws ; Accessories therefor
- A61B17/15—Guides therefor
- A61B17/151—Guides therefor for corrective osteotomy
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/14—Surgical saws ; Accessories therefor
- A61B17/15—Guides therefor
- A61B17/154—Guides therefor for preparing bone for knee prosthesis
- A61B17/155—Cutting femur
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1613—Component parts
- A61B17/1615—Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/164—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans intramedullary
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
- A61B17/1664—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the hip
- A61B17/1668—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the hip for the upper femur
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1717—Guides or aligning means for drills, mills, pins or wires for applying intramedullary nails or pins
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1721—Guides or aligning means for drills, mills, pins or wires for applying pins along or parallel to the axis of the femoral neck
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1725—Guides or aligning means for drills, mills, pins or wires for applying transverse screws or pins through intramedullary nails or pins
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
- A61B17/1742—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the hip
- A61B17/175—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the hip for preparing the femur for hip prosthesis insertion
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- 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
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- 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
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8872—Instruments for putting said fixation devices against or away from the bone
-
- 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
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/90—Guides therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B2017/1602—Mills
Definitions
- the object of the present invention consists of a set of cephalomedular nailing for the treatment of femoral fractures as well as the Instrumental for the placement of said nailing set, giving the function to which it is intended, advantages and novelty characteristics that suppose a remarkable improvement of the current state of the art.
- the cephalomedular interlock assembly of the present invention allows solving fundamental problems: the reduction of fractures (especially pertrochanteric fractures of inverted and subtrochanteric lines), improving the biomechanics of the assembly so that the load axis is the most favorable for the stroke fracture it and avoid collapse of the femoral neck and loss of limb length and off set and with it the abductor power.
- the types of proximal femoral limb fractures are known as: femoral neck fractures, pertrochanteric fractures and subtrochanteric fractures.
- Fractures of the femoral neck are the qae affecting the area between the trochanteric region and the femoral head.
- the treatment of femoral neck fractures is performed with cannulated percussive screw threads perpendicular to the plane of the fracture, which allows interfragmentary compression to help reduce and promote consolidation,
- Pertrochanteric fractures affect the focused area between the major and minor trochanter, which represents the transitional signal between the femoral neck and the femoral shaft
- the major and minor trochanteric coughs are the insertion zones of the main muscles of the gluteal region: lower glutes and a half, jliopsoas and short rotators.
- the classic systems used are the cefslornedular elevo (intramedullary nail with sliding screw) (intramedullary device) and the sliding screw-plate (extramedullary device) m its different variants.
- Sufferential fractures are located within 5 cm of the proximal femur portion immediately inferior to the lesser trochanter. This type of fractures produces a characteristic deformity of the proximal femur in flexion, abduction and external rotation, Since in this type of fractures what is affected is the subtrochanteric region and not the femoral neck, in this section it does not make sense to talk about devices of length fp versus devices of variable length of femoral neck.
- the options for the treatment of this type of fractures are axtramedullary devices versus intramedullary ios
- the extra-medullary devices include a 95 * angled plate-plate type and the dynamic condylar screw must be included.
- Intramedullary devices include ordinary anterograde intramedullary nails or cephalo-articular nails. Although fractures can be treated with ordinary intramedullary nails with transverse locking screws, in most cases some type of fixation in the femoral head and neck type cephalomedular nail is more appropriate.
- Patent application EP2T30243 discloses an osteosynthesis device for the treatment of femoral neck fractures, comprising a femoral nail with oblong cross section, for insertion into the medullary canal of the femur and a cephalic thyme to be inserted at least partially into the head and neck of the lemur, said cephalic screw has a transverse opening to receive said femoral nail.
- the osteosynthesis device for the treatment of fractures of the femoral neck comprises a femoral nail (1) of rectangular or oblong cross-section, for insertion into the medullary canal of the femur and a cephalic screw 12) to be inserted at least in part, in the head and neck of the femur, the cephalic screw (2) has a transverse hole (25) to receive said femoral nail (1), characterized in that it comprises a compression element (3) that connects said femoral nail and said cephalic screw , in which the two opposite transverse walls, respectively called distal (252) and proximal (251) of the transverse hole (25) are inclined in the same direction with respect to the longitudinal axis ( ⁇ 1-X'1) of said tension screw ( 2), and because the distance (D) between the edge of said stop (252a) of the distal transverse wall (252) located in the plane of the inlet opening (253) of said transverse opening (25) and the orthogon projection 1 of said parallel edge (251b)
- WO01S648 patent application reveals an orthopedic implant comprising: a hip thyme; a sliding mechanism; an inframedullary nail; and a compression screw, wherein said orthopedic implant provides for postoperative static compression, dynamic postoperative compression and is of a hip thyme implant design, said intraroedular nail has a cross section of any geometric shape, the shape and dimensions of which the cross section may generally be the same along the entire length of said intramedullary nail or may vary along the length of said inmedullary nail.
- EP patent application 1072229 shows a synthesis element (10) for the repair of fractures of the femur comprising a femoral component that can be associated with the femur, and a cephalic screw capable of attaching said femoral component to the head of the femur , the synthesis element is characterized in that said cephalic screw (11) comprises a first association for coupling a first femoral component comprising a rod (12) layers to be inserted into a diaphysis channel made in the femur and the second association means coupling a second femoral component comprising a plate (13) layers being fixed laterally to the outer surface of the femur, said first and second association allows being able to be used alternately to define at least two different configurations of use for the synthesis element (10 ).
- the difference between the present invention and the prior art is based primarily on the novel specific geometry of the screw channel and the placement of an additional locking screw.
- the nail can rotate in 360 ° of the space which makes the nail easier to insert through the screw.
- the shape of the channel allows the nail to be arbitrarily blocked according to the desired varus-valgus inclination (within a range of established varus-valgus inclination) offering three opposing support points to varo-valgo forces as well as a rotational stapilisaeion by means of locking screws and grooves (in its grooved version).
- the nail also has advantages in relation to the possibility of performing valguizing osteotomy once the head screw is placed (if the anatomical axis of the femoral neck is not adequate). In turn / compared to the angled plate, it is a less complex system and allows the earliest twill (being an intramedullary system) after performing a valgus osteotomy.
- the introducer-compression device and its extension-reducer the proximal femur fragment is managed in the axial plane and in the anteroposterior plane.
- cephalomedular nail object of the invention can be made with any material according to existing standards or other possible materials that may be suitable or useful for this purpose.
- cephalomedular nailing assembly for the treatment of femur fractures of the present invention, as well as the instruments for the placement of said nailing set it gives you the function to which it is intended, advantages and characteristics of novelty that suppose a remarkable improvement of the current state of the art.
- Figures 1-18 correspond to examples of the cephalomedular nailing assembly, in a first variant embodiment thereof with a nail for insertion into a trecanteric fosita.
- the concrete show the following:
- Figure 1 corresponds to a medial sagittal section of the cephalic screw
- Figure i ⁇ represents how the cross-channel geometry of the screw is achieved.
- This geometry is obtained by subtracting from the screw volume the geometric shape corresponding to the volume that delimits inside a torosdal revolution surface whose central point coincides with the axis of the thyme, which tilts according to an established angle, which can be variable.
- said geometry may correspond to the subtraction of the screw volume of a double inclined inverted cone trunk (18) whose distal surface (surface on which the nail is pushed during its blockage) is modified (represented in the image by line of points) so that its sagittal section is circumferential and therefore homogeneous for the support of the nail on the screw.
- Figure 2 is a shave view of the screw,% ures 4 and 6 are top and bottom floor views respectively of the cephalic thyme shown in size 1.
- Figure 3 is an axial section according to section AB of Sa fkfura 1.
- Figure 4 represents the upper (le) and lower (1f) ellipses of the screw channel (Id) head (1).
- Figures SA and 58 correspond to views of the left and right side profile respectively of each of the stabilization screws
- Figure S shows the upper (le) and lower (1f) ellipses of the channel (Id) of the head screw (1).
- Figure 7 is a view of the left lateral profile or proximal part of the head screw, and Figure 8 of the right side or distal part.
- Figures 8A, SB and 8C represent the short proximal straight nail (A elevation view, 8 left profile., C right profile).
- Figure 10 is a cut at the groove level where the stabilization screws are supported (consolidate the thyme-nail assembly) and where an elevation view of one of said stabilization screws has been added.
- Figure 11 A is a shaved view of the distal locking screw, and 118 a left profile view of the thyme.
- Figure 12A is a top plan view (proximal end of the nail) and Figure 128 is a bottom plan view (distal end of the nail).
- Figure 13A is a top view of the head screw in its grooved version.
- Figure 138 is a top plan view of the cephalic screw in its slotted version with a cut made longitudinally anteroposteriorly in its upper part.
- Figure 13C is a sagittal section of the nail in its grooved version (proximal part of the nail).
- Figure 13D is a left profile view of the grooved nail.
- Figure 13E is a cross-section of the nail in its grooved version (AS cut of the figure 13D).
- Figures 13F-H correspond to a perspective view of the upper part of the nail in its version with square, triangular and semi-circular section edges respectively.
- Figures 131-K correspond to a perspective view of the top of the nail in its version with a single square, triangular and semicircular edge respectively.
- Figure 14 ⁇ is a medial sagittal section of the short "proximal straight nail", with the two locking screws distant!
- Figure 14B corresponds to the same stop nail in a coronal section.
- Figure 1.5 is a composition of the cephalic thyme with the short proximal straight nail with the two distal locking screws.
- Figures 16 and 17 represent the angular range of movement of said nail over the cephalic thyme in the lateral and anteropostenor plane respectively.
- Figure ISA is a view of the long proximal straight nail assembly with the head screw in the Left profile and Figure 18B in shaving.
- Figures 1 ⁇ -23 correspond to a second variant of the cephalomedular nail, in this case for insertion in the greater trochanter tip, which, in particular, show the following:
- Figure 19 is a medial sagittal section of the cephalic screw of the cephalomedular nail in its version for greater trochanter tip insertion.
- Figure 20A is an elevational view of said thyme
- Figures 20B and 20C are top plan views s respectively of the same thyme shown in Figures 10, preceding 19 and 20.
- Figure 21 is an elevational view of the short proximal angled nail with the two distal locking screws.
- Figure 22 corresponds to a sagittal section of said nail with its two block-locking screws.
- Figure 23A is a view of the assembly of the long proximal angled nail with the left head screw m and the figure 23B in elevation.
- Figure 24 A shows a shaved view of the trochanteric support plate and flat screw fixing it to the cephalic screw as well as the trosanthome screws and their relationship with the screw-nail system as well as the direction of the blocked trochanteric screws to the plate.
- Figure 248 is a left profile view of the trochanteric support plate adapted to the cephalic thyme.
- Figure 24C is a left profile view (from the proximal region) of the flat fixing bolt of the frochanteric plate.
- Figure 24D is a left profile view (from the proximal area) of a trochanteric thyme.
- Figures 25-48 refer to the Instrumental necessary for the placement of the cephalometular nail in its variant for trochanteric fossta insertion, which is also exfensible to the second variant of said nail, with minor modifications in the guidance system. Specifically, this group of figures show the following:
- Figure 25A is an elevational view of the needle placement guide through which the head screw is placed.
- Figure 2S8 is a left profile view of the needle placement guide.
- Figure 26A is a shaved view of the soft tissue protector with the needle reducer positioned through the gluttonic needle of the cephalic thyme.
- Figure 26B is a left profile view of the soft tissue protector
- Figures 26C and D correspond to the guide needle reducer: shaving and right profile views (from the distal part) respectively.
- Figure 26 E is a shaved view of the cephalic screw burr piercing the femoral neck through the guide needle.
- Figure 27A is a shaved view of the special milling cutter terminal that optionally contemplates the nail of the assembly of the invention
- Figure 27B is a section of said terminal according to the short AB indicated m Figure 27A. and Fig. 27C is a bottom plan view (as far as possible) of the same terminal.
- Figure 28 shows an elevation view of the interfragmentary insertion-compression device with the connector placed therethrough.
- Figure 29A is a shaved view of the connector of the compression insertion device 5 and Figure 2918 a left profile view of said connector ( ' from its proximal part).
- Figure 30 is a sagittal section of the connector shown in Figures 29.
- Figure 31 is a perspective view from the proximal region of the insertion-compression device together with the connector.
- Figure 32 is a shaved view of the extension-reducing device and its assembly with the interfragmentary compression-intruder device.
- Figure 33 is a left profile view of the extension-reducing device.
- Figure 34 is a sectional view, according to section A8 indicated in Figure 32, at the level of the joint extension device-reducer cors and the introducer device.
- Figures 35A f 3SB are profile views Left and in ally respectively of the 16 clamping pin between the introduction-compression device and the drive-reducing device
- Figure 36 shows a shaved view of the nail locking guide.
- Figure 37 a top plan view (from the proximal region) of the connecting thyme of the nail insertion guide
- Figure 38 shows an elevational view of said eonecior thyme with a sagittal cortex in its upper half and its relation with the nail insertion guide, which is sagittally sectioned
- Figure 39 ⁇ is a top plan view of the locking guide
- figure 398 a bottom plan view of it.
- Figure 40A is a shaved view of the insertion handle and head screw through which the special cutter penetrates around the guide needle.
- Figure 408 is a shaved view of the assembly of the cephalomedular enervation assembly with the aid of the instruments formed by the prolonged-reducer device coupled to the insertion device and the nail insertion guide
- Figure 41 is a left profile view of the nail insertion guide with the extension device located through its central space.
- Figure 42 is a shaved view of the cephalomedular nail in a sagittal section where the connector of the insertion device is shown, through which the screwdriver is introduced to adjust the stabilization screws. In turn, the distal locking guide and the drill bit are shown. for distal locking thymes.
- Figure 43A shows a displaced inverted fret fracture in which the head screw has been introduced with the insertion-compression device and extension-reducer
- Figure 436 shows the same reduced fracture through lever application with the instruments.
- Figure 44A shows a fracture displaced in the axial plane into which it has been introduced the cephalic thyme with the introduction-business device and extension-reducer.
- Figure 44B shows the same fracture reduced by means of a rotational movement in the direction of the needles of the thin) with the instruments.
- Fig. 4SA is a shaved view and 4S8 shows a profile view of the osteotomy device going Ig, the figures 48A and 48B correspond to views in the upper plan, respectively, of the valgizing osteotomy device.
- Figure 47 corresponds to the section A8 marked in Figure 45A
- Figure 48 corresponds to a scheme of placement of the valgui3 ⁇ 4ante osteotomy device on the femur in the trocanfersa region where its stabilization is represented by needles.
- Figure 48 depicts the osteotomy d® lateral subtraction once; placed the head screw in a femoral stress neck fracture.
- Figure 50 shows the sliding of the diaphysis towards the lateral region as well as valguisacion of the femoral neck once the osteotomy has been performed.
- Figure 51 depicts the introduction of the nail into the reduced valgus osteotomy.
- the assembly of the cephalonedular interlocking object of the invention is distinguished essentially because it comprises a cannulated screw which we will call a cephalic screw, which is introduced through the lateral face of the irocantorea region of the femur directed towards the femoral head through which a hollow nail anterogatically in the proximal limb of the femur (Irochanteric fossa / greater trochanter tip).
- proximal straight nail a nail with Insertion in a greater trochanter tip, where the nail is curved in its proximal part
- proximal angled nail a nail with Insertion in a greater trochanter tip
- both cvos can be formed with an edge / series of edges in their medial part of variable morphology, which would fit with a series of grooves in the internal surface of the transverse screw channel and give it a double rotational stability from the point of biomechanical view (on the one hand rotational stability of the stabilization screws on the lateral nail groove and on the other the edge / groove assembly that is established between the medial nail face on the transverse channel of the cephalic screw).
- the type of morphology suitable for its performance should be evaluated through biomechanical studies)
- the channel of the cephalic screw through which the nail is inserted and that passes through said thyme in a transverse direction has a configuration specially designed to allow the angular variation of the position of the nail, its diameter being greater in the upper and lower parts of the screw and minor in the central part.
- this channel is equivalent, from the geometric point of view, to the volume that delimits in its interior a surface of twisted revolution (not circumferential but ellipid revolution).
- Another option is a double cone-shaped channel with the central surface recessed in the part of the screw on which the nail will impact during placement. Both geometric shapes have a certain inclination with respect to the central axis of the cephalic screw in order to obtain a convenient angle of varus-value stabilization between cephalic screw and nail.
- a locking system is contemplated to consolidate the cephalic screw with the nail by means of two stabilizing screws.
- both types of nail are blocked by two screws, which we will call distal locking thymes, and that pass through the nail in its lower toroso, one of them with the possibility of dynamic placement, similar to those that exist in the market.
- the cephalic thyme also has the option of placing a plate with screw locking system, a plate that we will call a trochanteric support plate, ampouled thereto, and- that allows the placement of trochanteric thymes to fix the greater trochanter tip or supplement the fixation dal cueiio / femoral head in cases where indicated.
- the interlock assembly is placed by instruments specifically designed for this purpose, said instrument being a second aspect of the present invention.
- the caliper thyme is introduced, once the femoral neck is broached, by means of a device that joins the thyme through a connector and allows it to perform interfragmentary compression when the fracture requires it.
- the Introduction-compression device This device allows, at the same time, to manipulate the proximal femoral segment.
- a prolonged device r "in T” that allows the manipulation of the proximal segment of the femur with greater ease and that we will call an extension-reducing device, which is connected to the introduction-compression device by means of a threaded butterfly system
- the nail is attached to an arc-shaped guide, which we will call a nail insertion guide, through a connecting screw.
- Said guide allows the insertion of a needle to guide said insertion of the nail, as well as the passage through the protonator-reductive device for the screwing of the stabilization screws by means of the fingerboard morphology of its vertical arm. From this guide, the brocade and subsequent introduction of the distal locking screws are performed by using a distal locking guide.
- the invention contemplates, in a complementary manner, special milling cutters in the nail that can pass through the thyme channel in a staggered manner.
- the invention contemplates a valguizing osteotomy device applicable to cases in which there is an angular alteration of the femoral neck axis.
- Said device can be placed and used to perform a wedge resection of the intertrochanteric region once placed the head screw. In this way the recovery of the correct cephalic angle of the femur can be achieved by manipulating the proximal fragment of the femur by means of the placement instruments.
- the specific geometry of the screw channel and the placement of an additional locking screw of the present invention presents several different and novel facts. On the one hand the nail can rotate in 360 ° of the space which makes the nail easier to insert through the screw.
- the shape of the channel allows the nail to be arbitrarily blocked according to the desired varus-valgus inclination (within an established varus-valgus inclination range) offering three points of support that oppose the varus-valgus forces as well as a Rotational stabilization by means of locking screws and grooves (in its slotted version).
- the assembly of the invention comprises a cephalic thyme (1), a nail (3) proper, short or long * and one or two locking thymes (4).
- a troeanthenic support plate (9) with trochanteric screws (11) is also contemplated.
- the cephalic screw (1) for proximal straight nail (3) is a screw is channeled (1d) in a transverse direction. It has an asymmetric diameter, which should be assessed through biomechanical studies. From the geometric point of view, the aforementioned channel (Id) of the screw is determined by subtracting the geometric shape corresponding to the volume (1j) from the screw volume that delimits inside a twisted revolution surface whose point center coincides with the axis of the screw, which tilts according to an established angle and that can be variable. The surface of toroldal revolution is obtained by rotating the circumference (generatrix curve) around an axis of rotation that does not intersect it at any point ( Figure 1A).
- vain-valgus inclination of the nail on the thyme is greater than the anteropesterior inclination, said rotation is not circumferential but elliptical. It has an elliptical section in the coronal plane. In the proximal and distal parts of the canal, said geometric shape is modified to increase the mechanical strength of the thyme, becoming rectilinear in its section.
- the central axis axis of rotation of the circumference
- this geometric shape allows the nail (3) an inclination in the 386 ° of the space, with limits of inclination towards varus / valgus of 15 ° (range angle of varo-valgus inclination of 30 °) and of anterior and posterior inclination of 10 ° (anteroposterior inclination angular range of 20 °), that is, an angular range of vario-valancing inclination of +/- ⁇ 15 ° and of anteroposterior inclination of +/- 10 °.
- the bisector axis of the angular range of inclination corresponds to the axis of rotation of the circumference which, in its turn, delimits said volume.
- the head screw (i) shown in Figure 1 in a medial sagittal section has the described transverse channel (id) for the nail ⁇ 3). It is a screw with longitudinal cannulation and with distal short thread (1h). In addition, it has two notches (Ib) in diametrically opposite positions in its proximal part to stabilize the screw-glues connection that are threaded into the internal thread (la) of said proximal part (ib). It also has two pre-stabilized stabilization screws (2) that have a thread (2a) that allows the advance through the two threaded tunnels (lo) of the cephalic thyme in the desired position (once the fracture reduction is achieved) .
- Figures 1, 2, 4 and ⁇ represent the upper (1e) and Lower (1f) ellipses of the channel (id) of the cephalic thyme (1).
- the thyme can be manufactured with a transverse channel obtained by subtracting the volume of a double inverted cone trunk (1k) from the screw volume whose center It coincides with the axis of the screw and that: it is inclined- In this case the distal part where the nail rests is modified Making its sagittal section circumferential without affecting the range of inclination of the nail on the screw (Figure IB).
- it can have a series of rectilinear vertical striations (edges) (3ti) in the slotted screw variant (Figure 13) that would fit with longitudinal depressions on the surface of the screw where the nail is supported (grooves) (11).
- the edges can have different section (rectangular, triangular, or circumferential) and can be single or multiple (Figures 13F to 13K).
- the nail (3) in its proximal straight variant: it is a guided cannulated nail (milled or not) of different diameters. It has a longitudinal depression (3b) as a channel in the lateral face of its upper region where the stabilization screws will seat
- the nail (3) can be short (figures 9 to 1?) Or long shown in Figures 18A and B.
- (3) length is anatomical, that is, curved in its dietal part following the anterior curvature of the femur, therefore a range of right nails (3) and another of left nails (3) are contemplated. It has different lengths that have been represented with dashed line C3g) to adapt to lemurs of different lengths. In this case, it is advisable to mill the femoral canal with special strawberries prior to nail placement.
- the cephalic screw (1) Due to the design of the cephalic screw (1), once the latter is placed in the femoral neck, allow 15 ° of additional valgus with respect to the angulation proposed as standard. Therefore, it is possible to place a screw (1), perform valgulzant osteotomy of lateral subtraction and force the valgus to reduce the femur antas or after placing the nail (3). Since the design of the screw (1) would be limited to 15 ° of valgus from the standard position, in case of needing greater correction in valgus the thyme could be placed slightly in varus (up to a maximum of 30 * of valgus by placing the screw to 100 * of varus).
- the locking screws (4) are conventional cortex screws similar to other femoral nail locking screws known in the prior art. They have a head (4a) with a hexagonal cavity (4c) inside to fit a screwdriver of the same morphology, as well as a small notch (4b) in its distal part to turn them into self-embossing (figures 11A and 14).
- the cephalic thyme (1) presents the possibility of placing an accessory in its proximal part, a trochanteric support plate (9).
- a trochanteric support plate (9) what is consolidated with said head screw (1) by means of a flat connecting thyme (19) with a proximal head (10a) with a large hexagonal cavity (10o) for a large hexagonal screwdriver and distal thread (10o) and by projections (Se) that they fit into the notches (1b) of the proximal part of the screw (1).
- the support plate (9) offers the possibility of placing trochanteric screws (11) locked to the plate to fix the greater trochanter when there is a decrease in the fracture or even directed to the neck-head of the femur.
- the trochanteric thymes (11) are connected to the trochanteric support plate (9
- the nail (3) is angled in its proximal area for introduction through a greater trochanter tip, comprising the following:
- the nail (3) has the option of using a trochanteric support plate (9).
- the cephalic screw (1) is similar to the previous one, but when the nail is introduced from a lateral position to the axis of the femoral and non-central canal, as was the case with the nail for insertion through the trocan ⁇ rerea fosita, it is increased # 1 angle of inclination of the nail varus (3) on the thyme (1) to allow proper insertion of the nail.
- the channel (id) of the screw (1) is more iatera ⁇ izado (figures 19 and 20).
- the limits of inclination towards varc / valgo are 30 ° respectively (angular range of varo-valgus inclination of 60 s ) and of anterior and posterior incineration of ICr 3 (angular range of anteropostenor inclination of 20 °).
- the prominent angle between the head screw (1) and the distal part of the key (3) would be 125 °.
- the nail (3) As for the next curved nail (3), it is similar to the proximal straight nail (3) in general terms, but in this case the nail has an angulation in its proximal part of 10 * to adapt to the morphology of the proximal femur. Roll be short or long.
- the long nail (3) is anatomical with curvature of the anterior convexity to adapt to the morphology of the femoral dialysis ( Figure 23A). It has several lengths (3g) to adapt me to the characteristics of the femur or fracture type. Being anatomical, the long nails (3) are divided into right and left.
- said instrument comprises a needle guide for the femoral neck (12) that is handled by gripping it by means of the clamping handle (12a) and which has a bone support surface (12d) that resembles the anatomy of the femur as well as 2 upper tubular guides (12b) for guide wires (13) antiretatorlas and a lower (12c) for glutton needle (13) of the cephalic thyme, a soft tissue protector (14) that has a clamp handle (14a) and a tubular element whose distal limb has teeth of stabilization (14c) and a needle reducer (15) that is cannulated (15a) to allow the passage of gluttonic needle through it.
- It also includes a drill for a cephalic screw (18) as well as a milling system for a medullary canal with a specific morphology terminal ("special drills") (17) for milling the medullary canal of the femur, and on the other hand an insertion device.
- Infernal pressure (18) with m connector (19) and a pro-reducer device (20), to place the head screw (1), an insertion guide (21) of the nail (3) and a locking guide (27 ) of the locking screws (4) distal. Since milling of the spinal canal is usually necessary to insert the nail (usually 1, S ram more than the diameter of the nail), according to the caliber of the channel (I d) of the cephalic screw (1), it is necessary to use drills special (17).
- the diameter (d) of a conventional milling cutter would be the effective diameter of the special tesas (17).
- the thickness (e) of the cutting blades (17a) of the milling cutter would correspond to one third of the radius of the milling cutter, that is, one sixth of the effective diameter of the milling cutter ( Figure 27C).
- Said diameter (d) would be the maximum width of the special milling cutter (17) and therefore can pass through the screw channel.
- the maximum width that the special milling cutter (17) would have along its length would be 10 mm. which would be stealthily small to be introduced through the channel (Id) of the head screw (1) psra a nail (3) of 10 mm. Strawberries (17) are introduced from the proximal part of the femur guided by an olive guide wire (28)
- Is the introduction device HSipresien (18) inertifragmentana allow to introduce the cephalic screw (1) once the brocade has been made at the level of the femoral neck to carve a canal
- This device (18) is attached to the cephalic screw (1) through a connection? (19), as shown in Figures 28 to 31
- the device (18) has a central core with an upper extension (I8e) and a lower one (18d) as well as five tunnels through which threaded needles ( 23) two upper tunnels (18a) and two lower tunnels (18b) adjacent to the central core, and another tunnel at the lower end (181) of greater diameter to place a pin (24) of external Schanz type fixator (figure 40).
- Said pin (24) is maintained by a small sized pin (25b) inserted through a hole (18k) existing in said tunnel of the lower end (181) once the desired reduction has been achieved.
- the upper extension (18e) has a hole (18m) where the distal end (20b) of the pro-reducing-device (20) is coupled and has a hole (18c) on its front face to place a second lever (25) that stabilizes prolonged saying? by its threaded end (25a),
- the central core of this interfragmenic introduction-compression device (18) has two tabs (18j) in its distal part, which are inserted in the notches (Ib) presented by the cephalic thyme (1) in its proximal part to improve stability of their union.
- Said central core, in its distal part has a wide thread (18g) of interfragmentary compression that rotates around its threaded outer surface (18h), to rotate manually and that has several perforations (18n) to help the rotation confresistance through a small key when necessary, La.
- Distal area (18f) has a nut (181) which, by turning clockwise, also allows interfnamental compression by pushing on the lateral cortex of the femur.
- the connector (19) has a proximal part (1Sa) of hexagonal head and a threaded distal part (19b) that adapts to the proximal part of the cephalic screw (1). It adapts by screwdriver with hexagonal terminal.
- the connector (18) has, along its route, two tunnels (19c), one upper and one lower through which insert the screwdriver (28) to tighten the stabilization screws (2) screw-nail with which the head screw (1) (figures 25 to 31) is used,
- the extension-reduetor device (20) is an extension of the insertion-compression device (18) (figures 32 to 35) linked thereto, as described, through its distal end (20b) by means of a clamping knob ( 25), It has a proximal area in "T" (20a) that, by grasping it, allows manipulation of the femoral neck in the anteroposterior direction.
- this device is housed between the two branches of the insertion glutton (21) of the nail fingerboard ") so that rotation is stabilized: of the nail (3) with respect to the cephalic screw ( 1) to ensure that the stabilization screws (2) are led to the longitudinal depression (3b) of the nail (3) created for this purpose (figure 41).
- the instrument also features a nail insertion guide (21) consisting of a bifurcated vertioal part (21a) "in fingerboard” and another curve (21b) that ends in a tubular region (21c) at the end of which there are two tabs (21 d) that fit the notches (3a) of the nail (3) (figure 38).
- a guide wire (26) is inserted through the trochanteric fossa / greater trochanter tip after having performed bone perforation by means of a conventional punch.
- the insertion guide (21) is connected to the nail (3) by means of a connecting screw (22) consisting of of head (22a) for hexagonal screwdriver a tubular part (22c) and a threaded end (22b) (figures 37 and 38).
- the instrument also features a dsstaf bolt of thimble (27), where said guide (27) is inserted between the arms of the bifurcated vertical part (21a) of the insertion guide (121) of the nail perpendicular to the nail ( 3) (figure 42), It consists of a proximal wide part (27a) and a narrow tubular section (27b) through which the drill bit (29) is introduced to mill the femur for the passage of the distal locking screw (4). Subsequently, through this guide, said locking thyme (4) is introduced by means of a hexagonal screwdriver.
- a valguizanta osteotomy device (30) that adapts to the bone in the lateral region of the proximal femur and is attached by introducing fixation needles (31) to through holes for fixing the device (30a).
- the cutting guide (30c) is fixed by means of needles (31) inserted through the holes (3Gb) of the convergent channels that it presents through it, first horizontally to make the first cut (with conventional saw) and then move It was born below according to the desired angulation that can be measured through the calibration (30d) and is fixed again and then the lower cut of the lateral subtraction wedge is performed.
- Said cutting guide (30c) has edges (30g) that allow it to perform angular variation by sliding through the arofom grooves ⁇ (30 ⁇ ) of the cutting glutton. It has a horizontal groove (30f) that gives access to the guide through which the saw blade is introduced to establish the cuts that delimit the lateral subtraction wedge.
- the shaft be moved slightly to the lateral region by means of a bone hook (33) to avoid altering the mechanical axis of the limb (figure 50).
- proxlmal fragment to reduce the proximal segments and tel to the osteotomy through the introduction device (18) coupled to the extension-reducing device (20) and, once the reduction was obtained, the nail (3) would be introduced (figure 51) ) and its locking to the cephalic screw by means of stabilization screws (2) and subsequently blocked distally (4).
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020197013072A KR20190067202A (ko) | 2016-10-10 | 2016-10-10 | 대퇴골 골절을 치료하기 위한 각도 가변형의 세팔로메듈러리 네일링 시스템, 본 발명의 범위 내에 있는 외반-생성 절골술 장치를 포함한, 그 시스템을 배치하기 위해 사용되는 기구 |
US16/340,482 US11471201B2 (en) | 2016-10-10 | 2016-10-10 | Cephalomedullary nailing system of variable angle to treat femur fractures and the utensils used to place the system |
AU2016426047A AU2016426047B2 (en) | 2016-10-10 | 2016-10-10 | Intramedullary nailing system of variable angle to treat femur fractures |
MX2019004076A MX2019004076A (es) | 2016-10-10 | 2016-10-10 | Conjunto de enclavado cefalomedular de angulo variable para el tratamiento de fracturas de femur, e instrumental para su colocacion incluyendo dispositivo para osteotomia valguizante. |
CN201680089999.9A CN109843194A (zh) | 2016-10-10 | 2016-10-10 | 用于治疗股骨骨折的角度可变的头状髓内钉系统 |
PCT/ES2016/000110 WO2018069554A1 (es) | 2016-10-10 | 2016-10-10 | Conjunto de enclavado intramedular de ángulo variable para el tratamiento de fracturas de fémur |
BR112019007255-1A BR112019007255B1 (pt) | 2016-10-10 | 2016-10-10 | Sistema de fixação intramedular de ângulo variável para tratar fraturas femuras |
CA3078664A CA3078664A1 (en) | 2016-10-10 | 2016-10-10 | Cephalomedullary nailing system of variable angle to treat femur fractures. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/ES2016/000110 WO2018069554A1 (es) | 2016-10-10 | 2016-10-10 | Conjunto de enclavado intramedular de ángulo variable para el tratamiento de fracturas de fémur |
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WO2018069554A1 true WO2018069554A1 (es) | 2018-04-19 |
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PCT/ES2016/000110 WO2018069554A1 (es) | 2016-10-10 | 2016-10-10 | Conjunto de enclavado intramedular de ángulo variable para el tratamiento de fracturas de fémur |
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US (1) | US11471201B2 (es) |
KR (1) | KR20190067202A (es) |
CN (1) | CN109843194A (es) |
AU (1) | AU2016426047B2 (es) |
BR (1) | BR112019007255B1 (es) |
CA (1) | CA3078664A1 (es) |
MX (1) | MX2019004076A (es) |
WO (1) | WO2018069554A1 (es) |
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US11717413B2 (en) * | 2018-06-11 | 2023-08-08 | Desarrollos Biomecanicos Innovason S.L. | Hip or shoulder prosthesis and placement instruments |
WO2021043907A1 (en) * | 2019-09-03 | 2021-03-11 | Bispebjerg Hospital | Surgical system for osteosynthesis of femoral fractures |
KR102125716B1 (ko) | 2019-11-06 | 2020-06-23 | 의료법인 명지의료재단 | 삽입 각도 재현 가능한 k-강선 가이드 기구 |
KR102519621B1 (ko) * | 2020-06-22 | 2023-04-06 | 박명식 | 대퇴경간부 각도고정장치 |
US11701132B2 (en) | 2021-03-25 | 2023-07-18 | DePuy Synthes Products, Inc. | Lateral cortex penetrator |
US20220378482A1 (en) * | 2021-05-25 | 2022-12-01 | Spinal Generations, Llc | Orthopedic bone tap and methods incorporating the same |
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EP1072229A2 (en) | 1999-07-30 | 2001-01-31 | LIMA Lto SpA | Synthesis element for repairing fractures of the femur |
WO2001056487A1 (en) | 2000-02-02 | 2001-08-09 | Nelson Owen A | An orthopedic implant used to repair intertrochanteric fractures and a method for inserting the same |
EP2730243A1 (fr) | 2012-11-09 | 2014-05-14 | Denis Pichon | Dispositif d'ostéosynthèse pour le traitement des fractures du col de fémur |
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US4697585A (en) * | 1985-01-11 | 1987-10-06 | Williams Michael O | Appliance for fixing fractures of the femur |
US5281224A (en) * | 1993-01-05 | 1994-01-25 | Orthofix S.R.L. | Centering means for holes of intramedullary nails |
DE19829228C1 (de) * | 1998-06-30 | 1999-10-28 | Aesculap Ag & Co Kg | Vorrichtung zur Versorgung von Knochenbrüchen |
US6648889B2 (en) * | 2001-04-24 | 2003-11-18 | Dale G. Bramlet | Intramedullary hip nail with bifurcated lock |
JP2006522637A (ja) * | 2003-04-09 | 2006-10-05 | ジンテス ゲゼルシャフト ミット ベシュレンクテル ハフツング | 大腿骨折部の固定用の髄内ネイル |
DE102007029090A1 (de) * | 2007-06-21 | 2008-12-24 | Plus Orthopedics Ag | Vorrichtung zur Osteosynthese gelenknaher Knochenfrakturen |
US8906023B2 (en) * | 2007-06-22 | 2014-12-09 | Epix Orthopaedics, Inc. | Intramedullary rod for pivoting a fastener |
US9289220B2 (en) * | 2008-06-24 | 2016-03-22 | Extremity Medical Llc | Intramedullary fixation assembly and method of use |
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BRPI1011556A2 (pt) * | 2009-06-30 | 2016-03-29 | Smith & Nephew Inc | implante ortopédico e montagem de fixação |
CN101601605B (zh) * | 2009-07-14 | 2011-01-05 | 常州市康辉医疗器械有限公司 | 股骨近端骨折髓内钉固定装置 |
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EP3294167B1 (en) * | 2015-04-24 | 2021-05-19 | Biomet Manufacturing, LLC | Humeral nail |
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2016
- 2016-10-10 BR BR112019007255-1A patent/BR112019007255B1/pt active IP Right Grant
- 2016-10-10 AU AU2016426047A patent/AU2016426047B2/en active Active
- 2016-10-10 WO PCT/ES2016/000110 patent/WO2018069554A1/es active Search and Examination
- 2016-10-10 US US16/340,482 patent/US11471201B2/en active Active
- 2016-10-10 CA CA3078664A patent/CA3078664A1/en active Pending
- 2016-10-10 MX MX2019004076A patent/MX2019004076A/es unknown
- 2016-10-10 CN CN201680089999.9A patent/CN109843194A/zh active Pending
- 2016-10-10 KR KR1020197013072A patent/KR20190067202A/ko not_active Application Discontinuation
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EP1072229A2 (en) | 1999-07-30 | 2001-01-31 | LIMA Lto SpA | Synthesis element for repairing fractures of the femur |
WO2001056487A1 (en) | 2000-02-02 | 2001-08-09 | Nelson Owen A | An orthopedic implant used to repair intertrochanteric fractures and a method for inserting the same |
EP2730243A1 (fr) | 2012-11-09 | 2014-05-14 | Denis Pichon | Dispositif d'ostéosynthèse pour le traitement des fractures du col de fémur |
Also Published As
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BR112019007255A2 (pt) | 2019-07-02 |
CA3078664A1 (en) | 2018-04-19 |
US20190380752A1 (en) | 2019-12-19 |
AU2016426047A1 (en) | 2019-05-30 |
MX2019004076A (es) | 2019-06-10 |
CN109843194A (zh) | 2019-06-04 |
AU2016426047B2 (en) | 2022-12-15 |
US11471201B2 (en) | 2022-10-18 |
BR112019007255B1 (pt) | 2022-10-04 |
KR20190067202A (ko) | 2019-06-14 |
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