BRPI0610647B1 - COMBINED WRENCH AND COMBINED FIXER FOR HEXAGONAL AND WOLF HEAD FIXING SYSTEMS - Google Patents

Description

(54) Title: COMBINATION WRENCH AND COMBINED FIXER FOR HEXAGONAL HEAD AND WOLF FIXING SYSTEMS (73) Holder: SYNTHES GMBH. Address: EIMATTSTRASSE 3, CH-4436 OBERDORF, SWITZERLAND (CH) (72) Inventor: RAYMOND A.PACHECO.JR.

Validity Term: 10 (ten) years from 10/02/2018, subject to legal conditions

Issued on: 10/02/2018

Digitally signed by:

Liane Elizabeth Caldeira Lage

Director of Patents, Computer Programs and Topographies of Integrated Circuits

1/25

Descriptive Report of the Invention Patent for COMBINATION WRENCHES AND COMBINED FIXERS FOR HEXAGONAL HEAD AND WOLF FIXATION SYSTEMS ”.

Background [001] The present invention relates to fasteners and keys for fasteners and, more particularly, to combined fasteners that can be driven by more than one key head configuration and combined keys that can drive more than one configuration of fastener head.

[002] Combined wrenches capable of engaging and driving more than one threaded fastener configuration can be useful when assembling parts. For example, numerous keys in the prior art combine a grooved head and a cross-shaped head such as a Philips type screwdriver on a single axis, to enable the single combined key to engage both, a screw that has a single groove head and a screw that has a Philips type head. Also, prior art combination wrenches include configurations that can correspond to conventional hexagonal head fasteners, such as the wrench described in U.S. Patent Application No. 4,367,664. Combined fasteners such as hex head fasteners that have a slot for a standard screwdriver are also well known.

[003] For orthopedic or other surgeries in which threaded fasteners are attached to part of a body, the type and size of the head of the fastener are often recorded in an X-ray record of the body. Consequently, in subsequent surgery to remove, or otherwise access, the fasteners, the same X-ray record used for medical analysis identifies the appropriate type and dimension of the key to engage the fasteners. Sometimes, however, subsequent surgery to remove, or otherwise access,

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2/25 the fixers, occurs without the use of identification information, such as when the information is not entered in the original X-ray record, or the original record is not available. Identifying the type and size of the fixator to choose the appropriate wrench during surgery is otherwise difficult without open dissection, due to the position of the fixators in the body and because fluid can darken the fixator.

Summary [004] A combined key is provided that has alternating grooves and grooves. The key is capable of engaging and operating a conventional hexagonal head fastener and a conventional wired head fastener, such as a Torx® type fastener. The key includes an axis that defines a longitudinal axis and only one drive tip. The tip includes alternate ridges and ridges. Each of the flutes is curved in cross-section. Each of the ridges includes a first side surface and an opposite second side surface. Each of the first side and second side surfaces is substantially straight in cross-section. The flutes are able to drive a fastener that has a recess with lobes and the ridges are able to drive another fastener that has a hexagonal recess with a straight wall. [005] The surfaces of the first side of the ridge and the surfaces of the second side of the ridge can be flat or arched in longitudinal profile. In cross-section the surfaces of the first ridge side and the second ridge side can be straight or of another configuration. Preferably each of the first ridge side surfaces and the second ridge side surfaces form an angle of approximately 120 ° between them. The first ridge side surfaces and the second ridge side surfaces can meet at any point in cross-section, or a joint portion can be placed between the first ridge surfaces

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3/25 ridge side and second ridge side surfaces. The junction portion can be flat or curved in cross-section. [006] The tip of the key can be straight, in such a way that the tip does not have a taper, or can taper in such a way that the width of the tip decreases near its distal end or such that the width of the tip increases near its end distant.

[007] A socket head wrench is provided, which includes an axis that defines a longitudinal axis and only one drive tip. The tip includes alternate ridges and ridges. Each of the flutes is curved in cross-section. Each of the ridges includes a first side surface and an opposite second side surface, each of which is substantially straight in cross-section. The flutes are capable of activating the fixer that has a hexagonal head and at least one of the flutes and the ridges are capable of activating another fixer that has a head with wolves.

[008] A combination of the combined wrench and conventional fasteners is also provided. The combination of a first configuration in which the wrench engages a conventional straight-wall hexagonal head fastener, and a second configuration in which the wrench engages a conventional wired head fastener such as a Torx® fastener. In the first configuration, at least a portion of the key ridges engages hexagonal head walls for actuation. In the second configuration, at least a portion of the key flutes engage along the fastener during activation.

[009] A threaded fastener is provided, which is capable of being actuated by each one between a conventional hexagon socket head wrench and a conventional socket head wrench. The fixer includes a head that has alternating ridges and ridges placed around its perimeter. Each of the canePetition 870180054944, of 06/26/2018, p. 6/41

4/25 luras is curved in cross-section. Each of the ridges includes a first side surface and an opposite second side surface, each of which is substantially straight in cross-section. An axle that has screw threads protrudes from the underside of the head. The flutes are capable of being driven by a wrench-head socket wrench and the ridges are capable of being driven by a straight-walled hex head socket wrench.

[0010] A combined socket head fastener is provided, which is capable of being driven by each of a hex head wrench and a wrench head wrench. The fastener includes a head that has a recess formed in it. This includes flutes and alternating side wall surfaces. Each of the flutes is curved in cross-section. The side wall surfaces are placed between the flutes and each side wall surface includes an opposite first side and second side surface, and each first side and second side surface is substantially straight in section. transversal transverse.

[0011] The combined socket head fastener can be configured such that the flutes divide each flat side wall substantially in half, such that the surfaces of the first side wall and second side wall form an angle of 120 ° between them. Consequently, the ridges or vertices of a hex head wrench should engage the side walls. Alternatively, the flutes can take the place of hexagonal ridges in such a way that a spaced central portion separated from the vertices contacts the side walls of the fastener.

Brief Description of the Figures [0012] Figure 1 is a perspective view that illustrates engaPetição 870180054944, of 06/26/2018, p. 7/41

5/25 adjustment of a key with a first fastener;

[0013] Figure 2 is a perspective view illustrating the engagement of the key shown in Figure 1 with a second fastener; [0014] Figure 3 is a perspective view of a key tip shown in Figures 1 and 2;

[0015] Figure 4 is another perspective view of the tip of the key shown in Figures 1 and 2;

[0016] Figure 5 is a cross-sectional view of the tip of the key taken along lines 5-5 of Figure 3;

[0017] Figure 6 is a schematic view of the cross-section profile of the key shown in Figure 5, placed on a fastener head like the one shown in Figure 1;

[0018] Figure 7 is a schematic view of the cross section of the key shown in Figure 5, placed on a fastener head like the one shown in Figure 2;

[0019] Figure 8A is an enlarged cross-sectional view of a portion of a key crest shown in Figure 5;

[0020] Figure 8B is an enlarged cross-sectional view of a portion of another embodiment of a key crest;

[0021] Figure 8C is an enlarged cross-sectional view of a portion of yet another embodiment of a key crest; [0022] Figure 9A is a perspective view of an end of a second embodiment of the key;

[0023] Figure 9B is a perspective view of an end of a third embodiment of the key;

[0024] Figure 9C is a perspective view of an end of a fourth mode of the key;

[0025] Figure 9D is a perspective view of an end of a fifth embodiment of the key;

[0026] Figure 10 is a plan view of a key of the type

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6/25 socket;

[0027] Figure 11 is a plan view of the socket wrench shown in Figure 10, with a conventional hexagonal head fastener, shown schematically, placed on it;

[0028] Figure 12 is a plan view of the socket wrench shown in Figure 10, with a conventional wired head fastener, shown schematically placed on it;

[0029] Figure 13 is a side view of a fastener suitable to be operated either by a socket-type hex head wrench or a socket-type head wrench;

[0030] Figure 14 is a cross-sectional view of the fastener of Figure 13, taken through lines 14-14 in Figure 13; [0031] Figure 15 is a sectional view through the fastener of Figure 13 with a first type of wrench engaged;

[0032] Figure 16 is a cross-sectional view of the fastener of Figure 13 being engaged by a second type of wrench;

[0033] Figure 17A is a perspective view showing the engagement of a wrench head wrench with a socket type fastener;

[0034] Figure 17B is a perspective view illustrating the engagement of a wrench head wrench with another type of socket type fastener;

[0035] Figure 18A is a perspective view showing the engagement of a hexagonal head wrench with the fastener shown in Figure 17A;

[0036] Figure 18B is a perspective view illustrating the engagement of a hexagonal head wrench with the fastener shown in Figure 17B;

[0037] Figure 19A is a cross-sectional view of the fastener of Figure 17A;

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7/25 [0038] Figure 19B is a cross-sectional view of the fastener of Figure 17B;

[0039] Figure 20A is a cross-sectional view of the engaged fastener and wrench shown in Figure 17A taken through lines 20A-20A;

[0040] Figure 20B is a cross-sectional view of the engaged fastener and wrench shown in Figure 17B taken through lines 20B-20B;

[0041] Figure 21A is a cross-sectional view of the engaged fastener and wrench shown in Figure 18A taken through lines 21A-21A;

[0042] Figure 21B is a cross-sectional view of the engaged fastener and wrench shown in Figure 18B taken through lines 21B-21B.

Detailed Description of Preferred Modalities [0043] A combined wrench 10 includes a cable 12, an axle 14 and a tip 16, capable of engaging and driving each one of a conventional head locker 100 and a conventional head lock 200, as shown in Figures 1 and 2, respectively. The cable 12 is shown schematically in Figure 1, to indicate that the key 10 can include any configuration or type of cable, and the present invention encompasses the omission of a cable.

[0044] The tip 16, which extends from the axis 17, and ends at a terminal or distal end 18, has a configuration that allows it to be inserted in the head holder with lobes 100 and in the hex head holder 200. Making reference to Figure 3 and Figure 4, showing perspective views of the tip 16, and Figure 5 showing a cross-sectional view of the tip 16 near its distal end 18, the tip 16 includes alternating ridges 20 and ridges 30 formed around its perimeter.

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8/25 [0045] In general the flute shape 20 shown in Figures 3, 4 and 5, preferably is the same as the flutes of a conventional wrench head spanner, such that flutes 20 engage the conventional fastener wolves 100 as described below more fully. The shape of ridges 30 is achieved by truncating a head with lobes, such that ridges 30 are configured to engage conventional commercial hexagonal head fasteners. For illustration, Figure 5 shows a portion of a conventional Torx® profile in dashed lines protruding from the ridge 30. In this regard, U.S. Patent Numbers 3,584,667; 4,269,246 and 5,279,190 describe wrench head wrenches and wolves head fasteners, and each is incorporated herein by reference in its entirety.

[0046] The particular modality of the wrench shown in Figure 5 is based on a Torx® T25 profile to enable the wrench 10 to engage a Torx® fastener of size T25. The configuration of the ridges 30 formed when removing a portion of the lobe allows the key 10 to engage a conventional 3.5 mm hexagonal head fastener. The present invention is not limited to any particular size. Instead, the present invention encompasses any sizes of Torx® fastener of any size and corresponding hexagonal head fastener. In addition, the present invention is not limited to orthopedic applications, or other surgical applications, but, instead, encompasses any use in which the key can be employed.

[0047] Referring again to the modality shown in Figure 5, each flute 20 has a curved profile in cross-section, which includes a portion of the first fluted side 22 and a portion of the opposite fluted side 24. Between the portions of the first and second flute side 22 and 24 there is a flute bottom 26. Each crest 30 includes a first side surface

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Ridge 9/25 and an opposite ridge second side surface 34. Preferably the ridge first and second side surfaces 32 and 34 are flat. A joint portion 36 is placed between the first and second ridge sides 32 and 34. An angle included between side surfaces 32 and 34 is approximately 120 °. The junction portion 36 is preferably a small segment of a circle, however it can be any configuration as discussed in more detail below with respect to Figures 8B and 8C.

[0048] Preferably each of the side surfaces 32 and 34 is parallel to a longitudinal axis of the key 10 by a suitable distance, to enable the key 10 to engage the desired fastener. Referring to Figure 1, the distance D by which the side surfaces 32 and 34 are parallel to the longitudinal axis L can be 4.5 mm. Consequently, the width W, shown in Figure 5 through the tip from a flat surface 32, 34 to another one is constant across the distance D. Above the portion identified as the one within the distance D, the surface of the tip 16 gradually fuses to the circular shape of axis 14 above the portion of the surfaces 32 and 34 which are flat. The present invention is not limited to any D dimension, width W, surface melting configuration 32 and 34 on axis 14, or any other dimensions or configurations that are not expressly described in the claims.

[0049] Furthermore, the present invention is not limited to ridge sides 32 and 34 which are parallel to the longitudinal axis L, but instead covers lateral surfaces that are curved in longitudinal profile, as explained more fully below with respect to Figures 9B and 9D. The present invention also encompasses lateral ridge surfaces which are slightly arched in cross-section. Consequently, the terms substantially flat for three dimensions or substantially straight for two dimensions 870180054944, of 06/26/2018, p. 12/41

10/25 sections (in cross-section), are used here to cover not only a flat surface or straight line (in cross-section), respectively, but also to cover ridge surfaces that are or have a portion that is slightly arched . A designer may employ a slightly arched crest surface due to design or manufacturing convenience, operational considerations, or the like. The limiting factor of the scope of meaning of substantially flat and substantially straight (in transverse cross section), is the ability of the key to engage straight walls of a conventional hex head recess. [0050] A first side transition 42 is placed between the first ridge side surface 32 and the fluted first side surface 22. A second side transition 44 is placed between the second ridge side surface 34 and the second side surface of flute 24. Transitions 42 and 44 in cross-section are the points or regions in which the arcuate flute 20 meets or mixes on the straight surface of the ridge 30.

[0051] Referring to Figure 1 and Figure 6, the conventional fastener 100 includes flute 120 and alternating lobes 130. Figure 6, which shows the profile of the opening in the fastener 100, schematically illustrates the interaction of the flutes of the key 20 with the lobes of the fastener 130. In Figure 1, the portions of lobes 130 that are contacted by the flutes 20 of the key 10 are shown with cross hatch. The portion first the side 22 of each groove 20 contacts the corresponding cross hatch portion of the fastener lobe 130 by driving the fastener 100 in a clockwise direction which is the insertion direction for threads on the right. The second side portion 24 of each groove 20 contacts the corresponding cross hatch portion of the fastener lobe 130 by driving the fastener 100 in a counterclockwise direction which is the removal direction for threads on the right. Crests 30 do not contact the

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11/25 inner surface of the fastener with lobes 100 in this embodiment, even though the invention is naturally not limited to such a configuration, but instead covers a configuration (not shown in the Figures), in which ridges 30 are not separated from, or are in contact with the surface of the fastener 100.

[0052] Referring to Figure 2 and Figure 7, the conventional fastener 200 includes six flat side walls 210, each of which is preferably parallel to a longitudinal axis of the fastener. Figure 7 showing the profile of the opening in the fastener 200, schematically illustrates the interaction of ridges 30 with hexagonal head opening side walls 210. In Figure 2 side walls 210 of the fastener 200 are shown in cross hatches. The first ridge side surface 32 contacts the corresponding portion of the fastener wall 210 when driving the fastener 200 in a clockwise direction which is the insertion direction for threads on the right. The second ridge side surface 34 contacts the corresponding portion of the fastener wall 210 when driving the fastener 200 in a counterclockwise direction than the right-hand thread removal direction. Flutes 20 do not contact an interior surface of the hexagonal head fastener 200 in this embodiment, even though the invention is of course not limited to configurations in which some or all of the flute portions 20 are separated from the fastener 200.

[0053] Figures 8A, 8B and 8C are enlarged views of ridges 30. In each mode the angle included between the first and second sides is 120 °. As seen in Figure 8A, which shows an enlarged view of the ridge 30 shown in Figures 1 through 7, the junction portion 36 in cross-section is preferably curved and is preferably a segment of a circle. As shown in Figure 8B, the junction portion 36 'placed between the first and second side portions 32' and 34' preferably in transPetition section 870180054944, from 06/26/2018, pg. 14/41

12/25 transverse versa is flat to form a chamfer. As shown in Figure 8C, the first and second side portions of ridge 32 and 34 meet at a point or vertex 38.

[0054] Figures 9A, 9B, 9C and 9D show alternative wrench tip configurations. Each reference numeral in Figures 9A through 9D refers to the structure that corresponds to the structure of the modality in Figures 1 to 7, however each reference numeral in Figures 9A through 9D is attached with a letter indication to indicate that its structure is a modality. alternative.

[0055] As shown in Figure 9A, tip 16a includes first and second ridge surfaces 32a and 34a that are flat and tapered. In this regard, the particular surfaces 32a and 34a, which are shown in Figure 9A, as well as other ridge surfaces placed similarly around the perimeter of the tip 16a, define a plane that is inclined with respect to the L axis, such as that the distance from the L axis to the plane formed by the ridge surfaces 32a and 34a decreases, approaching the distal end 18a. Thus, the width between ridge faces on opposite sides of the tip 16a decreases near its distal end 18a. The flutes can be parallel or arched in a longitudinal profile. The opposite distal end 18a, ridge surfaces 32a and 34a, gradually merge into the cylindrical profile of the axis 14.

[0056] As shown in Figure 9B, tip 16b includes first and second ridge surfaces 32b and 34b which are tapered and curved in longitudinal profile. Preferably, as can be seen in Figure 9B, the ridge surfaces 32b and 34b are straight or substantially straight in cross-section, the profile of which is not shown separately in the Figures. Consequently, the first and second ridge surfaces 32b, 34b do not form a plane, but instead form a surface that has a smooth longitudinal profile. Petition 870180054944, 06/26/2018, pg. 15/41

13/25 arched, such that the width between the ridge faces on opposite sides of the tip 16b decreases when approaching its distal end 18b. Flutes 20b can also be tapered in longitudinal profile. The opposite distal end 18b, ridge surfaces 32b, 34b, gradually merge into the cylindrical profile of the axis 14.

[0057] As shown in Figure 9C, tip 16c includes first and second ridge surfaces 32c, 34c which are flat and tapered back, or cut out. In this regard, the particular surfaces 32c, 34c that are shown in Figure 9C, as well as other ridge surfaces placed similarly around the perimeter of the tip 16c, define a plane that is inclined with respect to the L axis, such that the distance from the L axis to the plane formed by the ridge surfaces 32c, 34c increases as it approaches the distal end 18c. Thus, the width between ridge faces on opposite sides of the tip 16c increases near its distal end 18a. The opposite distal end 18c, ridge surfaces 32c and 34c merge into the cylindrical profile of the axis 14.

[0058] As shown in Figure 9D, tip 16d includes first and second ridge surfaces 32d and 34d that are tapered back or cut and curved in longitudinal profile. Preferably and as can be seen in Figure 9D, ridge surfaces 32d, 34d are straight or substantially straight in longitudinal profile, the profile of which is not shown separately in the Figures. Consequently, first and second surfaces 32d and 34d do not form a plane, but instead form a surface that has a smoothly arched longitudinal profile, such that the width between ridge faces on opposite sides of the tip 16d increases near its end distal 18b. The opposite distal end 18d, ridge surfaces 32d, 34d merge into the cylindrical profile of the axis 14.

[0059] The maximum torque transmission rating of the wrench

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14/25 which has any of the tips 16, 16a, 16b, 16c and 16d, can be smaller than that of a conventional wrench head wrench when driving wrench head fasteners. Similarly, the maximum torque transmission rating for any of the socket-type fasteners or wrenches described here may be lower than the classifications of head products with corresponding conventional wolves. For several applications, however, as in an orthopedic application, the torque transmission capacity of the wrench or screw head is not the limiting factor in determining the maximum torque that can be safely applied. For example, in an orthopedic application the risk of breaking a screw shaft, damaging bone, or similar failure probably limits the maximum safe torque.

[0060] The key configuration 10 that has any of the points 16, 16a, 16b, 16c and 16d, when placed either on the fastener 100 or on the fastener 200, forms channels that allow fluid placed in the head of the fastener to escape when the key 10 is inserted in the head 100 or 200. Referring to Figure 6 for illustration, a space or channel 28 formed between the crests of the key 30 and the lobe of the fixer 130 allows the transmission of fluid at the bottom of the fixator cavity

100. Referring to Figure 7 for illustration, a space or channel 38 formed between the flutes of the key 30 and the walls of the fastener 210 enables the transmission of fluid at the bottom of the fastener cavity 200.

[0061] Referring to Figure 10 to illustrate another configuration of a key, socket type 310 includes a socket type 316 tip that has alternating arched flutes 320 and ridges 330 formed around the perimeter of the socket, as well as a shaft and cable (not shown). The configuration of flutes 320 and ridges 330 is as described in relation to Figures 1 to 7, such that flutes 870180054944, of 06/26/2018, p. 17/41

15/25 ras 320 and 330 are the negative of the flutes 20 and ridges 30. In this regard, the flutes 320 include a fluted first side portion 322 and fluted second side portion 324. A fluted bottom portion 326 it is placed between the fluted side portions 322 and 324.

Ridges 330 preferably include a first flat ridge surface 322 and a second flat ridge surface 324 with a junction portion 336 or peak 338 formed between adjacent ridge surfaces 322 and 324. The junction portion 336 or peak 338 can any configuration such as the negative of the structure shown in Figures 8A, 8B or 8C. The ridges 330 can have the negative of any structure described herein in relation to the tips 16, 16a, 16b, 16c and / or 16d.

[0063] Figure 11 shows the key 310 engaged with a conventional hexagonal head fastener, whose head 301 is shown in cross section. Flutes 320 engage the hexagonal head planes to drive the hexagonal head fastener. In particular, since the bottom portions of the flute 326 are the radially innermost portions of the socket of the key 310 the bottom portions of the flute 326 engage the planes of the hexagonal head 301 during clockwise and counterclockwise actuation.

[0064] Figure 12 shows the key 310 engaged with a conventional lobe head fastener such as a Torx® style fastener, whose head 305 is shown in cross section. Depending on the particular dimensions of the fastener head 305 and key 310, the head lobes 305 can be engaged by the fluted side portions 322 or 324 or the ridge side surfaces 332 or 334 as will be understood by a person skilled in fastener and key technology and according to the particular configuration of the conventional lobe fixer.

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16/25 [0065] Referring to Figure 13, a fastener 50 includes a head 52, a flange 54 and an axle 56. The flange 54, which is optional, extends radially outwardly from a lower portion of the head 52, and can reduce the support pressure of the screw head against your workpiece. The shaft 56, which is preferably conventional, includes threads 58 placed on it. Threads 58 are shown in relief in Figure 13 to indicate that threads can be of any configuration.

[0066] As best shown in Figure 14, which shows a cross section through lines 14-14 in Figure 13 with flange 54 omitted for clarity, head 50 includes flutes 60 and alternating ridges 70 formed around its perimeter. In general, the flute shape 60 shown in Figure 13 and Figure 14 is preferably generally the same as the flutes of a conventional wired head fastener, such as a conventional Torx® fastener, such that the wolves of a socket wrench conventional coupling flutes 60.

[0067] The shape of the ridges of the fixer 70 is achieved by truncating a head with lobes such that the flat walls of a conventional hexagonal socket wrench engage ridges 70. For illustration, Figure 14 shows a portion of a conventional Torx® profile in dashed lines protruding from the ridge 30.

[0068] Each flute 60 has a curved profile in transverse cross section, which includes a portion of the first fluted side 62 and a portion of the second fluted side 64. Between the first and second fluted side portions 62 and 64 there is a fluted bottom 66. Each ridge 70 includes a ridge first side surface 72 and an opposite ridge second side surface 74. Preferably the ridge first and second side surfaces 72 and 74 are flat. A junction portion 76 is placed between surfaces of

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17/25 first and second ridge sides 72 and 74. An angle included between side surfaces 72 and 74 is approximately 120 °. The junction portion 76 is preferably a small segment of a circle, however it can be any configuration as discussed above with respect to Figures 8B and 8C.

[0069] Preferably each of the side surfaces 72 and 74 is parallel to a longitudinal axis of the fastener 50. The present invention is not limited to such a configuration of surfaces 72 and 74, but instead covers any configuration, as will be understood by persons familiar with fastener technology in the light of this description. As described below, the configuration of the fastener 50 enables it to be engaged and actuated by each one of a conventional socket head type wrench such as the key 150 shown in Figure 15, and a conventional hex head socket type wrench such as the key 250 shown in Figure 16.

[0070] Figure 15 shows, schematically, a cross section through a fixator head 52 of a conventional socket head wrench type wrench 150, which includes flutes 160 and alternating wolves 170. The first side portion 62 of each groove 60 is contacted by the corresponding first side portion 172 of the key lobe 170 when driving the fastener 50 in a clockwise direction which is the insertion direction for threads on the right. The second side portion 64 of each flute 60 is contacted by the corresponding second side portion 174 of the key lobe 170 by driving the fastener 50 in a counterclockwise direction which is the right-hand thread removal direction. Flutes of key 160 do not contact ridges of fastener 70 in the manner shown in Figure 15, such that a space or channel 168 is formed between ridges of fastener 70 and flute of key 160, which allows the transmission of fluid in it. The invention is of course not limited to such a configuration but, instead,

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18/25 covers a configuration (not shown in the Figures) in which ridges 70 are not separated from, or are in contact with, the surface of key 150.

[0071] Figure 16 shows, schematically, a cross section taken through the fastener head 50 of a conventional hexagon socket head wrench 250 that includes six flat side walls 260, each of which is preferably parallel to one longitudinal axis of the key. First ridge side surface of the fastener 72 is contacted by the corresponding portion of the wall of the key 260 when driving the fastener 50 in a clockwise direction, which is the insertion direction for threads on the right. Second ridge side surface of the fastener 74 is contacted by the corresponding portion of the wall of the key 260 when operating the fastener 50 in an anti-clockwise direction which is the removal direction for threads on the right. The wall of the key 260 does not contact the flute of the fastener 60, such that a space or channel 178 is formed between the flute of the fastener 60 and the side wall of the key 260 to enable transmission of fluid therein. The present invention, however, is not limited to configurations in which some or all of the flute portions 20 are spaced apart from the fastener 200.

[0072] The particular configuration of the fastener 50 shown in Figure 15 and Figure 16 is based on a Torx® T25 fastener. The configuration of ridges 70 formed in the removal of a portion of the lobe allows the fastener 50 to be engaged by a conventional 3.5 mm hexagon socket head wrench 250, as described above. The present invention is not limited to any particular dimension but, instead, the present invention encompasses any size sizes of Torx® fastener and corresponding hexagonal head fastener. In addition, the present invention is not limited to orthopedic or other surgical applications, but instead covers any requirement 870180054944, of 26/06/2018, p. 21/41

19/25 or for use in which fastener 50 can be used.

[0073] The maximum torque rating of fastener 50 can be less than that of conventional fasteners with wolves. For several applications, however, as in an orthopedic application, the torque rating of the fixator head is not the limiting factor in determining the maximum torque that can be safely applied to a transmitted. For example, in an orthopedic application, the risk of breaking a screw shaft, damaging bone or similar failure, probably limits the maximum safe torque.

[0074] A combined socket type 410a fastener can be engaged and actuated by each of a conventional wrench head wrench, such as a wrench 305 shown in Figure 17A, and a conventional hex wrench wrench such as the wrench 301 illustrated in Figure 18A.

[0075] As best shown in Figure 19A showing a cross-section of a fastener head portion 410a, a head 412a has a socket having the recess 414a formed therein, which includes flutes 420a and alternating flat side walls 430a, formed at the around its perimeter. In general, the flute shape 420a shown in Figure 19A is preferably generally the same as the flutes of a conventional wolf head fixture, such that the lobes of a conventional wolf head wrench engages the flutes 420a.

[0076] Also in general the shape of the flat side walls 430a shown in Figure 19A, preferably it is generally the same as the flat side walls of a conventional hexagonal head fastener such that the flat side walls of a conventional hexagonal wrench engage walls flat sides 430a. Each flute 420a includes a fluted first side portion 422a and an opposite fluted second side portion 424a.

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20/25

Each flat side wall 430a includes a flat side wall first side portion 432a and a flat side wall second side portion 434a.

[0077] Preferably each of the side wall surfaces 432a and 434a are parallel to a longitudinal axis of fastener 410a. The present invention is not limited to such a configuration of side wall surfaces 432a and 434a, instead it covers any configuration as will be understood by persons familiar with fastener technology in view of the present description. As described below, the fastener configuration 410a enables it to be engaged and actuated by each of a conventional wrench head wrench such as key 305 shown in Figure 17a, and a conventional hex head wrench such as key 301 illustrated in Figure 18A.

[0078] Figure 20A shows a cross section through a fastener head 412a and a conventional wrench head wrench 305, which includes wires 306 and alternate grooves 309. The first side portion 422a of each groove 420a is contacted by the corresponding first side portion 307 of the key lobe 306 when driving the fastener 410a in a clockwise direction which is the insertion direction for threads on the right. The second side portion 424a of each flute 420a is contacted by the corresponding second side portion 308 of the key lobe 306 when driving the fastener 410a in a counterclockwise direction which is the removal direction for threads on the right. The key flutes 309 do not contact flat side walls of fastener 430a in the manner shown in Figure 20A, such that a space or channel 438a is formed between side walls of fastener 430a and key flutes 309, which allows the transmission of fluid in it. The invention is of course not limited to such a configuration but, instead, encompasses a configuration not shown in the Figures, in which caneluPetição 870180054944, from 06/26/2018, p. 23/41

21/25 keys 309 contact a fastener portion 410a.

[0079] Figure 21A shows a cross section made through the fastener head 412a and a conventional hexagonal head wrench 301 that includes six flat side walls 302, each of which is preferably parallel to a longitudinal axis of the wrench. The first flat side wall portion of fastener 432a is contacted by the corresponding side wall surface 303 of key side wall 302 when driving fastener 410a in a clockwise direction which is the insertion direction for threads on the right. The second side portion of the flat side wall of fastener 434a is contacted by the corresponding side wall surface 303 of key side wall 302 when driving the fastener 410a in a counterclockwise direction which is the removal direction for threads on the right. Neither the key side wall 302 nor the key crest or vertices 301 between the side walls 302 contact fixer flutes 420a, such that a space or channel 439a forms between the fixture flute 420a and key 301, for enable fluid transmission in it.

[0080] In another type of combined socket-type fastener, a 410b fastener can be engaged and actuated by each of a conventional lobed head wrench such as a 305 wrench illustrated in Figure 17B, and a conventional hex head wrench such as key 301 shown in Figure 18B.

[0081] As best shown in Figure 19B showing a cross-section of the fastener head 410b, a head 412b has a socket or recess 414b formed therein that includes six flat side walls 430b each of which is substantially divided in half by a flute protruding out 420b. In general the shape of the flutes 420b shown in Figure 19B is preferably generally the same as the flutes of a conventional wired head fixer, such as the wolves of a wrench.

Petition 870180054944, of 06/26/2018, p. 24/41

22/25 head with conventional wolves engage flutes 420b.

[0082] In general the shape of the flat side walls 430b shown in Figure 19B is preferably generally the same as the flat side walls of a conventional hexagonal head fastener, such that the ridges or vertices formed by the side walls of a hexagonal head wrench conventional coupling the corresponding fastener structure 410b. In this regard, the socket-type crest of the fastener head 410b is identified in the Figures as 431b. Each flute 420b includes a fluted first side portion 422b and an opposite fluted second side portion 424b. Each flat side wall 430b includes a first flat side wall portion 432b and an opposite flat side second wall portion 434b.

[0083] Preferably each of the side wall surfaces 432b, 434b is parallel to a longitudinal axis of fastener 410b. The present invention is not limited to such a configuration of side wall surfaces 432b and 434b, but instead, it encompasses any configuration as will be understood by a person skilled in fastener technology in view of the present description. As described below, the fastener configuration 410b enables it to be engaged and actuated by each of a conventional wrench head wrench such as key 305 shown in Figure 17B, and a conventional hex wrench such as key 301 illustrated in Figure 18B. [0084] Figure 20B shows a cross section through a fastener head 412b and a conventional wrench head wrench 305, which includes flutes 309 and alternating wolves 306. The first side portion 422b of each groove 420b is contacted by the corresponding corresponding first side portion 307 of the key lobe 306 when driving the fastener 410b in a clockwise direction which is the insertion direction for threads on the right. The second side portion 424b

Petition 870180054944, of 06/26/2018, p. 25/41

23/25 of each flute 420b is contacted by the corresponding second side portion 308 of the key lobe 306 when driving the fastener 410b in a counterclockwise direction which is the removal direction for threads on the right. Key flutes 309 do not contact flat fastener side walls 430b in the manner shown in Figure 20B, such that a space or channel 438b formed between the side walls of fastener 430b, especially ridges 431b and key flutes 309 that allows fluid transmission in it . The invention is of course not limited to such a configuration but, instead, encompasses a configuration not shown in the Figures, in which key flutes 309 contact a fastener portion 410a.

[0085] Figure 21B shows a cross section taken through the fastener head 412b and a conventional hex head wrench 301 that includes six flat side walls, each of which is preferably parallel to a longitudinal key axis. The first flat side wall portion of fastener 432 is contacted by the corresponding side wall surface 302 of key 301 when driving fastener 410b in a clockwise direction which is the insertion direction for threads on the right. The second side portion of the flat side wall of fastener 434b is contacted by the corresponding key side wall surface 303 of key 301 when driving the fastener 410b in a counterclockwise direction which is the removal direction for threads on the right. The key side wall does not contact fastener flutes 420b in such a way that spaces or channels 438b are formed between fastener flutes 420b and the side walls of the key to enable fluid transmission in them.

[0086] The particular fastener modalities 410a and 410b shown in Figures 17A through 21A and 17B through 21B are based on a Torx® wrench. The configuration of the alternate flutes 420a and 420b and flat side walls 430a or 430b enable fasteners 410a

Petition 870180054944, of 06/26/2018, p. 26/41

24/25 or 410b, respectively, are engaged by a corresponding conventional hex head wrench as described above. The present invention is not limited to any particular size but, instead, the present invention encompasses any size of Torx® wrench and corresponding hex head wrench. In addition, the present invention is not limited to orthopedic or other surgical applications but, instead, covers any use for which the fixator 410a or 410b can be employed.

[0087] The key tip 16 is used to illustrate a key use 10. For simplicity, the operation of each key tip 16a, 16b, 16c and 16d, key 310 and fasteners 50, 410a and 410b is not specifically described as operation since the operation of each is similar to that of the key 10 having a point 16. For illustration, the operation of the key 10 is provided in the context of an orthopedic operation, even though the present invention is not limited to such use. In orthopedic surgery, it may be difficult to identify whether a conventional wolf head fixator such as fixator 100 or a conventional hexagonal head fixator such as fixator 200 has been previously inserted into a body, if the type of fixator has not been registered or if the information is not available. In such circumstances it may be useful to use key 10 which has the ability to drive each of fasteners 100 and 200 as described above. Consequently, a surgeon can insert key 10 into an incision to engage fixator 100 or 200 to, for example, remove the fixator. The ease of use of the key 10, as well as of the key tips 16a, 16b, 16c and 16d, of key 310 is evident for non-surgical applications, such as any manufacturing or generic use.

[0088] Similarly, a surgeon may employ a combined fixative 50 (or 410a or 410b) in circumstances in which he dePetition 870180054944, of 06/26/2018, p. 27/41

25/25 is that each of the conventional socket head wrenches such as key 150 (or conventional hex head wrench such as key 301), and a conventional hex head socket wrench such as the wrench 250 (or a conventional wrench head wrench like the 305 wrench) can be used. The ease of use of fixator 50 (or 410a or 410b) is evident for non-surgical applications, such as any manufacturing or generic use.

[0089] The present invention is not limited to the particular embodiments described here but, instead, encompasses any structure described by the claims and reasonable variations thereof. The present invention also covers any combination of any of the various aspects or structures described herein, and none of the embodiments described herein are limited only to use with conventional wrenches or fasteners.

Petition 870180054944, of 06/26/2018, p. 28/41

1/8

Claims (40)

1. Key characterized by the fact that it includes an axis that defines a longitudinal axis and only one drive tip, the tip including flutes and alternating ridges, each of the flutes is curved in cross-section; each of the ridges including a first side surface and an opposite second side surface, each between the first side surface and the second side surface is straight in cross-section; therefore, the flutes are able to drive the fastener that has a recess with lobes and the first and second side surfaces of the ridges are able to drive another fastener that has a straight wall hexagonal recess. 2. Key, according to claim 1, characterized by the fact that each of the flutes includes a portion of the first side and a portion of the second side, the portions of the first side of the flutes are capable of driving the fastener that has the recess with wolves during clockwise rotation and the second side flutes are able to activate the fastener that has the recess with wolves during the counterclockwise rotation. 3. Key according to claim 2, characterized by the fact that the surfaces of the first ridge side are capable of driving the fastener that has the hexagonal recess during the hourly rotation and the surfaces of the second ridge side are capable of driving the fastener that has the hexagonal recess during counterclockwise rotation. 4. Key according to claim 3, characterized by the fact that a first side surface of a first ridge drains into a first side portion of a first flute in a first side transition, the first side portion of the Petition 870180054944, of 06/26/2018, p. 29/41 2/8 the first flute drains into a second side portion of the first flute in order to define a flute bottom between them and the second side portion of the first flute flows into a second side surface of a second ridge in a second transition side. 5. Key according to claim 1, characterized in that the surfaces of the first ridge side and the surfaces of the second ridge side are flat. 6. Key according to claim 1, characterized in that the surfaces of the first ridge side and the surfaces of the second ridge side are not flat. 7. Key according to claim 6, characterized in that the surfaces of the first ridge side and the surfaces of the second ridge side are straight in cross-section. 8. Key according to claim 7, characterized in that the surfaces of the first ridge side and the surfaces of the second ridge side are arched in longitudinal profile. 9. Key according to claim 1, characterized in that each of the first ridge side surfaces and the second ridge side surfaces form an angle of 120 ° between them. Key according to claim 9, characterized in that each of the first ridge side surfaces and the second ridge side surfaces meet at a point in a cross-section. 11. Key according to claim 9, characterized in that a joint portion is placed between the surfaces of the first ridge side and surfaces of the second ridge side, the joint portion is flat in cross-section. Petition 870180054944, of 06/26/2018, p. 30/41 3/8 12. Key according to claim 9, characterized in that a joint portion is placed between the first ridge side surface and the second ridge side surface, the joint portion is curved in cross-section. 13. Key, according to claim 1, characterized by the fact that the tip is not tapered. 14. Key according to claim 1, characterized by the fact that the tip is tapered in such a way that the width of the tip decreases close to its distal end. 15. Key according to claim 1, characterized by the fact that the tip is tapered back in such a way that the width of the tip increases near its distal end. 16. Key, according to claim 1, characterized by the fact that the flutes are concave. 17. Socket head wrench characterized by the fact that it includes an axis that defines a longitudinal axis and only one drive tip, the tip including flutes and alternating ridges, each of the flutes is curved in cross-section; each of the ridges including a first side surface and an opposite second side surface, each between the first side surface and the second side surface being straight in cross-section; so the flutes are capable of driving a fastener that has a hexagonal head and at least one of the flutes and the ridges are capable of driving another fastener that has a head with wolves. 18. Combination of a wrench, as defined in any one of claims 1 to 16, and fasteners, characterized Petition 870180054944, of 06/26/2018, p. 31/41 4/8 due to the fact that it has at least a first and a second configuration, the key including an axis that defines a longitudinal axis and only a drive point, the point including alternate flutes and ridges, each of the flutes is curved in section transverse transverse and each of the ridges includes a first side surface and an opposite second side surface; the first configuration comprising the key and a straight-walled hex head fixer, at least a portion of the ridges engaging walls of the hex head to act on it; and the second configuration comprising the wrench and a wired head fastener, at least a portion of the flutes engaging the fastener lobes to act on them. 19. Combination according to claim 18, characterized by the fact that each of the surface of the first ridge side and the surface of the second ridge side is straight in cross-section. 20. Combination according to claim 19, characterized in that the surface of the first ridge side and the surface of the second ridge side form an included angle of 120 °. 21. Combination according to claim 18, characterized by the fact that channels are formed between the fastener and the key in each of the first and second configurations. 22. Threaded fastener capable of being actuated by each of a hex head socket wrench, as defined by claim 17, and a wrench socket wrench, the fastener characterized by the fact that it comprises: a head that includes alternating flutes and ridges placed around a perimeter of the head, each flute is Petition 870180054944, of 06/26/2018, p. 32/41 5/8 curved in cross-section and each of the ridges including a surface of the first side and an opposite surface of the second side, each of the surfaces of the first side and the surface of the second side is straight in cross-section, and a axis protruding from a lower side of the head, the axis including threads formed on it; whereby the flutes are capable of being driven by a wrench socket head wrench and the ridges are capable of being driven by a straight-walled hex head socket wrench. 23. Fixer according to claim 22, characterized by the fact that each of the flutes includes a first side portion and a second side portion, the fluted first side portions are capable of being driven by wrenches of the spanner. head socket with wolves during the clockwise rotation and the second side fluted portions are capable of being driven by the wolves of the head socket wrench during the counterclockwise rotation. 24. Fastener according to claim 23, characterized in that the surfaces of the first ridge side are capable of being driven by straight walls of a hexagon socket head wrench during hourly rotation, and the surfaces of the second ridge side they are able to be driven by the straight walls of the hex head socket wrench during counterclockwise rotation. 25. Fixer according to claim 22, characterized in that the surfaces of the first ridge side and the surfaces of the second ridge side are flat. 26. Fixer according to claim 22, characterized by the fact that the surfaces of the first ridge side and the Petition 870180054944, of 06/26/2018, p. 33/41 6/8 surfaces of the second ridge side are not flat. 27. Fixer according to claim 26, characterized in that the surfaces of the first ridge side and the surfaces of the second ridge side are straight in cross-section. 28. Fixer according to claim 27, characterized in that the surfaces of the first ridge side and the surfaces of the second ridge side are arched in longitudinal profile. 29. Fixer according to claim 22, characterized in that each of the surfaces of the first ridge side and the surfaces of the second ridge side form an angle of 120 ° between them. 30. Fixer, according to claim 22, characterized by the fact that channels are formed between the fixer and each one of the wrench head wrenches and the hex head wrench when engaged. 31. Fastener as defined in any of claims 22 to 20, combined with the socket head characterized by the fact that it comprises: a head that has a recess formed therein; the recess including flutes and alternating side wall surfaces, each flute curved in cross-section; and the side wall surfaces being placed between the flutes, each of the side wall surfaces including an opposite first side surface and a second side surface, which is oblique to the first side surface, each within the first side surface. and the second side surface is straight in section Petition 870180054944, of 06/26/2018, p. 34/41 Transversal transverse 7/8; whereby, the side wall surfaces are capable of being engaged by a wrench that has a hexagonal head and the flutes are capable of being driven by another fastener that has a head with wolves. 32. Fixer according to claim 31, characterized by the fact that each of the flutes includes a first side portion and a second side portion, the fluted first side portions are capable of being driven by the key that has the head with wolves during the clockwise rotation and the portions of the second side of the flute are capable of being activated by the key that has the head with wolves during the counterclockwise rotation. 33. Fixer according to claim 31, characterized in that the surfaces of the first side of the side wall are capable of being activated by the key that has the hexagonal head during the hourly rotation and the surfaces of the second side of the side wall are capable of to be activated by the key that has the hexagonal recess during the counterclockwise rotation. 34. Fixer according to claim 33, characterized in that a first side surface of a first side wall drains into a first side portion of a first flute in a first side transition, the first side portion of the the first flute flows to a second side portion of the first flute and the second side portion of the first flute flows to a second side surface of a second side wall in a second side transition. 35. Fixer according to claim 31, characterized by the fact that each of the surfaces of the first ridge side and the surfaces of the second ridge side form an angle of 120 ° between them. Petition 870180054944, of 06/26/2018, p. 35/41 8/8 36. Fixer according to claim 35, characterized by the fact that each of the surfaces of the first ridge side and the surfaces of the second ridge side meet at a point in cross-section. 37. Fixer according to claim 35, characterized in that a joint portion is placed between the first ridge side surfaces and the second ridge side surfaces, the joint portion is flat in cross-section. 38. Fixer according to claim 35, characterized in that a joint portion is placed between the surfaces of the first ridge side and the surfaces of the second ridge side, the joint portion is curved in cross-section. 39. Fixer, according to claim 31, characterized by the fact that the flutes are concave. 40. Fixer, according to claim 31, characterized by the fact that channels are formed between the fixer and each one between the wrench head wrench and the hex head wrench when engaged. Petition 870180054944, of 06/26/2018, p. 36/41 Zlo 2/22 FIG 4 3/22 (i FIG 5 FIG 6 4, 4/22 FIG 7 FIG 8b IQ22 7/22 FIG 9d 8/22 FIG 11 FIG 12 9/22 FIG 13 10/22 FIG 14 11/22 FIG 15 12/22 FIG 16% 13/22 FIG 17a 14/22 FIG 17b 15/22 FIG 18a 16/22 FIG 18b 17/22 FIG 19a 18/22 FIG 19b 19/22 ^ '2-Ζλ FIG 20a 20/22 FIG 20b 21/22 3οζ FIG 21a 22/22 4lüb FIG 21b