Surgical saw system

Abstract

To provide a surgical saw blade and a surgical saw system promoting surgical accuracy and surgical efficiency.SOLUTION: A surgical saw blade 24 includes a cutting edge 42, a proximal portion 34, and a body portion 46. The cutting edge has teeth 44 and is substantially formed of a first material having a first thermal conductivity. The proximal portion includes a blade hub. The body portion connects the cutting edge and the proximal portion and includes a thermal transit core formed by a second material having a second thermal conductivity at least twice the first thermal conductivity. The core has at least two longitudinally extending core surfaces. The body portion includes at least two longitudinally extending flanking members disposed over the longitudinally extending core surfaces.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] [Cross - Reference to Related Applications] This application claims the priority and benefit of U.S. Provisional Patent Application No. 62 / 703,944, filed on Jul. 27, 2018 the contents of which are hereby incorporated by reference in their entirety as being included herein.

Background Art

[0002] During surgery, an electric surgical saw system having a surgical saw blade is used to remove tissue including bone and cartilage An electric surgical saw system comprising a surgical saw blade beneficially assists a surgeon performing orthopedic surgery. However, there is a need for improved surgical saw blades and surgical saw systems that promote improved surgical accuracy and surgical efficiency.

Summary of the Invention

[0003] The disclosed saw blade comprises a thermally conductive core and advantageously enables cutting at a blade temperature lower than that of well - known blades. The blade temperature is further reduced by using an auxiliary heat sink disposed in the blade fixture. The surgical saw blade comprises a cutting edge, a proximal portion, and a body portion. The cutting edge has a plurality of teeth and is substantially entirely formed from a first material having a first thermal conductivity.

[0004] The proximal portion comprises a blade hub. The body portion is disposed between the cutting edge and the proximal portion and connects the cutting edge and the proximal portion to each other. The body portion comprises a heat transfer core formed from a second material having a second thermal conductivity that is at least 2 times the first thermal conductivity. The core is ​​​​, at least two first longitudinal elements extending across the width of the core on opposite sides It has a core surface. The main body portion is arranged on the first core surface which extends in the longitudinal direction. It comprises at least two first side members that extend longitudinally on opposite sides. Yes, they are.

[0005] The cutting edge may be made of steel, and the side members extending in the longitudinal direction may also be made of steel. It's okay if it's not allowed.

[0006] The cutting edge may be made of steel, and the proximal portion may also be substantially entirely made of steel. It's okay if it's not allowed.

[0007] The cutting edge may be located at the distal end of the blade. The cutting edge may be formed from steel. good.

[0008] The cutting edge may be located at the distal end of the blade. The saw blade is located from the blade hub. It may be substantially symmetrical with respect to the long axis extending from the tooth.

[0009] To provide the side members, steel sheets are arranged to cover the first and second surfaces of the heat transfer core. It's okay if it's not allowed.

[0010] The cutting edge may be formed from steel. A pair of second side members on opposite sides may also be made of steel. The second side member is connected to the first side member and forms a heat transfer core. Extending along each of the two second heat transfer core surfaces on opposite sides that extend across the thickness of It's okay to do so.

[0011] The cutting edge may be located at the distal end opposite the blade hub of the saw blade. It may have a length exceeding half of the length of the saw blade. The proximal portion, the cutting edge, and the main body portion of the surgical saw blade may be substantially planar and may have a substantially constant thickness .

[0012] The heat transfer core may be substantially composed of copper.

[0013] The heat transfer core may be substantially composed of aluminum.

[0014] The surgical saw blade thermal management system includes a surgical saw blade and a blade fixture. The surgical saw blade includes a cutting edge, a proximal portion, and a body portion. The cutting edge includes a plurality of teeth and is substantially entirely formed from a first material having a first thermal conductivity. The proximal portion includes a blade hub. The body portion is disposed between the cutting edge and the proximal portion, connects the cutting edge and the proximal portion to each other, and includes a heat transfer core formed from a second material. The second material has a second thermal conductivity that is at least twice the first thermal conductivity. The heat transfer core has at least two longitudinally extending first core surfaces on opposite sides that extend across the width of the core. The body portion includes at least two longitudinally extending side members disposed on the longitudinally extending first core surface. The blade fixture is adapted to receive the blade hub of the blade and is connected to the saw handpiece. The blade fixture includes a heat sink. The heat sink may be a passive heat sink.

[0015] The heat sink may be an active heat sink.

[0016] The heat sink may be an active heat sink.

[0017] The heat sink may be an electrically operable active heat sink.

[0018] The heat transfer core of the system may be substantially composed of copper.

[0019] The heat transfer core may be substantially composed of copper.

[0020] A method of manufacturing a surgical saw blade includes steps of forming a layer of a blank sheet assembly, forming the blank sheet assembly, cutting out a plurality of saw blade blanks, forming a blade hub, and forming cutting teeth. The blank sheet assembly includes a substantially planar first steel sheet, a substantially planar second steel sheet, and an intermediate layer disposed between the first sheet and the second sheet. The substantially planar first sheet is formed of steel and has a first thickness and a first planar area. The second sheet is formed of steel and has a second planar area substantially equal to the first planar area and a second thickness substantially equal to the first thickness. The intermediate layer includes steel forming a cutting edge and a second material having a thermal conductivity at least twice that of the thermal conductivity of the heat transfer core formed within the blade. The first and second sheets are fixed to opposite sides of the intermediate layer to form the blank sheet assembly. A plurality of saw blade blanks are cut out from the blank sheet assembly. Each blank has a heat transfer core formed of the second material and a cutting edge formed of steel. The blade hub is formed at the proximal end of the blade blank, and the cutting teeth are formed on the cutting edge of the blade blank. and steps of forming a blank sheet assembly, cutting out a plurality of saw blade blanks, forming a blade hub, and forming cutting teeth. The blank sheet assembly includes a substantially planar first steel sheet, a substantially planar second steel sheet, and an intermediate layer disposed between the first sheet and the second sheet. The substantially planar first sheet is formed of steel and has a first thickness and a first planar area. The second sheet is formed of steel and has a second planar area substantially equal to the first planar area and a second thickness substantially equal to the first thickness. The intermediate layer includes steel forming a cutting edge and a second material having a thermal conductivity at least twice that of the thermal conductivity of the heat transfer core formed within the blade. The first and second sheets are fixed to opposite sides of the intermediate layer to form the blank sheet assembly. A plurality of saw blade blanks are cut out from the blank sheet assembly. Each blank has a heat transfer core formed of the second material and a cutting edge formed of steel. The blade hub is formed at the proximal end of the blade blank, and the cutting teeth are formed on the cutting edge of the blade blank. and cutting out a plurality of saw blade blanks, forming a blade hub, and forming cutting teeth. The blank sheet assembly includes a substantially planar first steel sheet, a substantially planar second steel sheet, and an intermediate layer disposed between the first sheet and the second sheet. The substantially planar first sheet is formed of steel and has a first thickness and a first planar area. The second sheet is formed of steel and has a second planar area substantially equal to the first planar area and a second thickness substantially equal to the first thickness. The intermediate layer includes steel forming a cutting edge and a second material having a thermal conductivity at least twice that of the thermal conductivity of the heat transfer core formed within the blade. The first and second sheets are fixed to opposite sides of the intermediate layer to form the blank sheet assembly. A plurality of saw blade blanks are cut out from the blank sheet assembly. Each blank has a heat transfer core formed of the second material and a cutting edge formed of steel. The blade hub is formed at the proximal end of the blade blank, and the cutting teeth are formed on the cutting edge of the blade blank. The blank sheet assembly includes a substantially planar first steel sheet, a substantially planar second steel sheet, and an intermediate layer disposed between the first sheet and the second sheet. The substantially planar first sheet is formed of steel and has a first thickness and a first planar area. The second sheet is formed of steel and has a second planar area substantially equal to the first planar area and a second thickness substantially equal to the first thickness. The intermediate layer includes steel forming a cutting edge and a second material having a thermal conductivity at least twice that of the thermal conductivity of the heat transfer core formed within the blade. The first and second sheets are fixed to opposite sides of the intermediate layer to form the blank sheet assembly. A plurality of saw blade blanks are cut out from the blank sheet assembly. Each blank has a heat transfer core formed of the second material and a cutting edge formed of steel. The blade hub is formed at the proximal end of the blade blank, and the cutting teeth are formed on the cutting edge of the blade blank. and an intermediate layer disposed between the first sheet and the second sheet. The substantially planar first sheet is formed of steel and has a first thickness and a first planar area. The second sheet is formed of steel and has a second planar area substantially equal to the first planar area and a second thickness substantially equal to the first thickness. The intermediate layer includes steel forming a cutting edge and a second material having a thermal conductivity at least twice that of the thermal conductivity of the heat transfer core formed within the blade. The first and second sheets are fixed to opposite sides of the intermediate layer to form the blank sheet assembly. A plurality of saw blade blanks are cut out from the blank sheet assembly. Each blank has a heat transfer core formed of the second material and a cutting edge formed of steel. The blade hub is formed at the proximal end of the blade blank, and the cutting teeth are formed on the cutting edge of the blade blank. The substantially planar first sheet is formed of steel and has a first thickness and a first planar area. The second sheet is formed of steel and has a second planar area substantially equal to the first planar area and a second thickness substantially equal to the first thickness. The intermediate layer includes steel forming a cutting edge and a second material having a thermal conductivity at least twice that of the thermal conductivity of the heat transfer core formed within the blade. The first and second sheets are fixed to opposite sides of the intermediate layer to form the blank sheet assembly. A plurality of saw blade blanks are cut out from the blank sheet assembly. Each blank has a heat transfer core formed of the second material and a cutting edge formed of steel. The blade hub is formed at the proximal end of the blade blank, and the cutting teeth are formed on the cutting edge of the blade blank.​​​​​​​​​​​​​​​​​​​​ The steel of the intermediate layer has multiple regularly arranged predetermined shapes and sizes formed in the intermediate layer. The second material may be provided as a third steel sheet having pockets. Even if multiple heat transfer cores are provided having substantially the same dimensions and shape as the same core, Good. The step of placing the heat transfer core in the pocket of the third sheet may be included. .

[0022] The intermediate layer of steel may constitute at least a portion of the proximal end.

[0023] The first and second steel sheets may be welded to the intermediate steel layer.

[0024] The heat transfer core may be substantially composed of copper.

[0025] The surgical saw system comprises a handpiece and a blade holder. It is connected to the saw handpiece. The blade holder is connected to the heatsink. ru.

[0026] The heatsink may be a passive heatsink.

[0027] The heatsink has a plurality of cooling fins 74 extending from the heatsink base 76. A dynamic heatsink 32 may also be used. The heatsink base is connected to the blade mounting fixture. It's fine if you do that.

[0028] The heatsink may be an active heatsink.

[0029] The heatsink may be an electrically operated active heatsink.

[0030] The surgical saw system was positioned to blow air across the heat sink. It may also have a fan.

[0031] Relative bearing and direction (e.g., top, bottom, rear, front, back, outside the aircraft, inside the aircraft) (medial, lateral, transverse, left, right, proximal, distal) are used herein to limit the scope of this specification. Rather, in order to facilitate the reader's convenience in describing at least one embodiment of the structure described, As shown below. In this specification, the term "proximally" refers to the saw handle. For surgeons holding the -22, i.e., the surgical site where the surgical saw blade 24 is used. Please understand that it means the side away from the other. The term "distal" means the outside This refers to the direction away from the doctor, that is, the direction towards the surgical site where the saw blade 24 will be used. Please understand this.

[0032] The illustrated elements may take many different forms and may have numerous and / or alternative configurations. Elements and equipment may be included. The illustrative components shown are intended to be limiting. This does not mean that additional or alternative components and / or their implementations are used. Good. Furthermore, unless explicitly stated otherwise, the elements shown are not necessarily to scale. They are not depicted together. [Brief explanation of the drawing]

[0033] [Figure 1] This is a diagram illustrating an exemplary electric surgical saw system. [Figure 2] Figure 1 is an exploded view of an exemplary surgical saw system. [Figure 3] Figures 1 and 2 are top views of an exemplary surgical saw blade in an exemplary saw system. [Figure 4] This is a cross-sectional view of the saw blade in Figure 3, cut in the direction of arrow 4. [Figure 5] This is a fractured top view of an exemplary alternative blade with an alternative blade hub. [Figure 6] Figure 3 is a top view of an exemplary heat transfer core in a saw blade. [Figure 7] This is a cross-sectional view of the heat transfer core in Figure 6, cut in the direction of arrow 7. [Figure 8A] Figures 1 and 2 show a perspective view of an exemplary saw blade thermal management system for an exemplary saw system with an exemplary passive heatsink. [Figure 8B] Figures 1 and 2 show a schematic diagram of an exemplary saw blade thermal management system for an exemplary saw system with an exemplary active heatsink, illustrating the exemplary saw blade thermal management system. [Figure 9] Figure 4 is an exploded view of an exemplary blank sheet assembly used in the manufacture of an exemplary saw blade. [Figure 10] Figure 9 is a top view of an example blank sheet assembly in its assembled state. [Figure 11] This is a cross-sectional view of an exemplary blank sheet assembly cut in the direction of arrow 11. [Figure 12A] Figures 10 and 11 show a top view of an exemplary saw blade blank in an exemplary first state formed from a sheet assembly. [Figure 12B] Figure 12A is an exemplary top view of a saw blade blank in an exemplary intermediate state. [Figure 12C] Figures 12A and 12B show exemplary top views of the completed saw blade blanks. [Figure 13] Figures 1 and 2 are top views of an exemplary alternative surgical saw blade for an exemplary saw system. [Figure 14] This is a cross-sectional view of the saw blade in Figure 13, cut in the direction of arrow 14. [Figure 15] This is an enlarged cross-sectional view of the blade portion within circle 15 in Figure 14. [Figure 16] Figures 1 and 2 are top views of other exemplary alternative surgical saw blades for the exemplary saw system. [Figure 17]This is a cross-sectional view of the saw blade in Figure 16, cut in the direction of arrow 17. [Modes for carrying out the invention]

[0034] As shown in Figures 1 and 2, the electric surgical saw system 20 uses a surgical saw blade 24. It is equipped with a drive saw handpiece 22. The saw handpiece 22 is a pistol-type handpiece. It is shown as such. Other configurations of the handpiece, such as a pencil type, may also be used. Good. The saw handpiece 22 has a drive (not shown) for maneuvering the saw blade. A drive motor and a power source that supplies power to the drive motor, such as a battery or wall socket. AC power, an operator input control element in the form of a finger-response trigger 25, and (Illustrated) For adjusting the power supplied to the motor in accordance with the displacement of the operator input control device It is equipped with a control device (which cannot be controlled).

[0035] The surgical saw blade 24 is attached to the handpiece 22 by the saw adapter 26. It is selectively connected to 22. The saw adapter 26 has the shape shown in Figure 3 or alternatively shown in Figure 3. An exemplary blade hub 30,30' of a saw blade 24 having the shape shown in 5 fits into It is equipped with a blade mounting fixture 28 having a surface. The reference saw adapter 26 is shown in Figure 2. It is preferable that it be selectively removable from the rest of the handpiece 22, as shown. An example of a handpiece with such an interface is the Stryker F1 TM Small Bone Po It is commercially available as part of the wer System. Further details are provided below based on Figures 8A and 8B. The saw blade heatsinks 32, 32' are incorporated into the blade mounting fixture 28 or They are joined. The saw blade heatsinks 32,32' are described in more detail below. This constitutes part of the thermal management system 70 for scientific saw blades.

[0036] Figures 3 and 4 show an exemplary surgical saw blade 24 in detail. Proximal part of the blade 24 The proximal portion 34 of the blade 24 located at the end 36 is equipped with a blade hub 30. It is located on the distal end 40 of the blade 24, opposite to the terminal end 36 and the blade hub 30. The distal portion 38 of the blade 24 is equipped with a cutting edge 42. The cutting edge 42 has multiple incising teeth 44 It is equipped with the following: The main body portion 46 is positioned between the cutting edge 42 of the proximal portion 34 and the distal portion 38. These are connected to each other. The long axis 48 extends from the proximal end 36 to the distal end 40, and the breech The blade 24 is effectively divided into two equal parts. The saw blade 24 is substantially symmetrical around the axis 48. Therefore, the opposite sides of the blade 24 in the direction intersecting the axis 48 are substantially opposite each other. They are mirror images of each other. As shown in Figures 3 and 4, the blade 24 and its main body portion 24 are The blade is substantially flat and has substantially constant thickness. For example, it may include reinforcing features in the form of one or more raised ribs.

[0037] Alternatively, a blade used as a reciprocating saw (not shown) has a blade parallel to the long axis 48. It may have cutting edges extending on each side of the do. Alternatively, the main body portion 46 may be non-planar. The shape may be, for example, curved, in which case the teeth at the distal end of the blade It can be used for excising artificial acetabular cups. The main body part 46 is the length of the saw blade. It is preferable that length L1 be more than half the length of L2. An example length L1 is 24 mm. The exemplary length L2 is 36 mm.

[0038] The distal portion 38, and by extension the cutting edge 42 and teeth 44, all of them have a first yield strength and a first It is formed from a first material having a thermal conductivity of . The first material is a biocompatible material. It would be good to do so. The term "biocompatible" as used in this specification means This means that the materials or features described are not toxic or harmful to human tissue. The first exemplary biocompatible material is 440 series stainless steel. Later references to steel, stainless steel, and 300 and 400 series stainless steel are in 440. This also applies to stainless steel. The typical yield strength range for stainless steel is 450-19 It is 00 MPa (megapascals). The typical range of thermal conductivity values ​​for stainless steel is 1 It is 2-45 W / mK (watts / meter Kelvin). Other materials, for example, other high-carbon steel Stainless steel (e.g., 300 series or 400 series stainless steel), tungsten carbide, or Tan may be used. The teeth 44 are shown as being coplane with the main body portion 46. Because the teeth 44 are oriented in this way, when the saw blade 24 is held in a planar orientation , a cut surface (not shown) having a thickness substantially equal to the thickness TS of the saw blade 24 This will result in a drooping effect. The thickness TS of the saw blade 24 is shown in Figure 4. Exemplary thickness T S is 0.38 mm. Alternatively, tooth 44 is angled away from the plane of the main body. It may have a pointed tip, in which case the teeth 44 are greater than the thickness TS of the saw blade 24. It is possible to produce a cross-section with a wide width.

[0039] The proximal portion 34 is formed from the same material as the distal portion 38 (i.e., the first material). It is good to do so. One exemplary proximal portion 34 is a mounting feature portion, for example, an engaging arc 50 and multiple The blade hub 30 is equipped with a number of position-holding elongated holes 52. The engaging arc 50 is a blade This helps to determine the anterior-posterior position of the blade 24 relative to the mounting bracket 28, i.e., the distal-proximal position. The position-holding elongated hole 52 is located in a rotational position relative to the blade mounting fixture 28. The blade mounting fixture 28 that holds the cord 24 accepts an interface element (not shown). This is what is being done. One alternative blade hub 30' is shown in Figure 5. Engagement arc 50' is located at the bottom of the receiving elongated hole 54. The retaining lengths of the feature portion 30' on opposite sides. The hole 52' is to be engaged by a compatibility interface element (not shown). The hubs 30, 30' and their associated mounting features described are merely illustrative. It is merely a generalization and not intended to be comprehensive, because many alternatives are well known. This is because it is used commercially. Alternatively, the proximal portion 34 is used in the main body portion 46. They may share a layered structure. Such a layered structure will be explained below. ru.

[0040] The main body portion 46 is formed from a second material, for example, copper, aluminum, or a composite material. It is equipped with a heat transfer core 56. As an example of a composite material, it has a thermal conductivity greater than that of the first material. Specifically, diamond, synthetic diamond, having at least twice the second thermal conductivity. And carbon nanotubes are examples. However, materials with high thermal conductivity are cutting edge 42 And it tends to have a significantly lower yield strength than materials suitable for the tooth 44. For example, The typical thermal conductivity of copper is 386 W / mK, which is more than eight times that of stainless steel. However, the typical yield strength of copper is significantly lower than that of stainless steel. It is 70 MPa. On the other hand, the typical value of the thermal conductivity of aluminum is the same as the thermal conductivity of stainless steel mentioned above. It is 204 W / mK, which is more than four times the conductivity. However, it is the typical yield strength of aluminum. The yield strength is 95 MPa, which is significantly lower than that of stainless steel. Therefore, the main body part 4 6 is a pair of horizontal side members 58 on opposite sides and / or a pair It also includes vertical side members 60 on opposite sides. The side members 58 and 60 are heat transfer members. A material harder than the material of the core 56, for example, the same material as the distal portion 38 or the proximal portion 34. The material may be, for example, stainless steel. Such side members 58, 60 Lateral bending rigidity when side members 58, 60 are not provided during operation in excision mode By providing greater lateral bending rigidity to the main body portion 46, the blade mounting bracket 2 It facilitates the transmission of the cutting force from tooth 8 to tooth 44. The side members 58 and 60 are in the longitudinal direction. That is, in the direction of the long axis 48, from the proximal portion 34 across the main body portion 46 to the distal portion It would be good if it extended to 38.

[0041] The horizontal and vertical reference numerals are for the convenience of drawing the reader's attention. It is used only with respect to the attached drawings. The horizontal side member 58 can be alternatively, for example, The vertical side member 60 is sometimes called the first side member, and for example, the second side They are sometimes called components.

[0042] The core comprises multiple surfaces including an upper horizontal surface 57, a lower horizontal surface 59, and two vertical surfaces 62. It is. When assembled, one of the horizontal side members 58 has the upper horizontal plane 57 of the core horizontally. When cut and positioned, the other of the horizontal side member 58 is the lower horizontal surface 59 of the core 56. It is preferable to arrange them across. The upper horizontal plane 57 and the lower horizontal plane 59 of the core 56 are, As shown in Figures 6 and 7, it extends longitudinally along the entire length of the core 56. The horizontal planes 57 and 59 are opposite each other. As shown in Figure 7, the upper horizontal plane 57 And the lower horizontal plane 59 is on opposite sides of the core 56, and the two opposite sides of the vertical plane 59 They are connected to each other by the faces 62. The vertical faces 62 are also longitudinal along the length of the core 56. It extends in the direction. As shown in Figure 4, one of the vertical side members 60 is incorporated When this is done, the vertical side member 6 is often positioned across one of the vertical surfaces 62 of the core 56. The other side of 0 may be positioned across the vertical plane 62 opposite to the core 56. Alternatively, A56, for example, by making the core cross-section somewhat convex, specifically the horizontal plane 5 By rounding one or both of 7 and 59, the core surfaces 57 and 59 provide intermediate surfaces. This allows them to be directly joined to each other without any additional work, thereby providing individual vertical surfaces 62. It may be formed without any action required.

[0043] The horizontal, vertical, upper, and lower reference numerals are described in relation to the side members 58 and 60. Similarly, the attached drawings are used solely for the convenience of drawing the reader's attention to this specification. Alternatively, the horizontal plane 57 is sometimes called the first plane, and the vertical plane 62 is called the first. It is sometimes called the 2nd face.

[0044] The width W1 of the core 56 shown in Figure 7 is the total width W2 of the saw blade 24 and the width on opposite sides. The width W2 of the positioned horizontal side member 58 is equal to the width of the core. Alternatively, as shown in Figure 4, The width W1 of 56 takes into account the portion of the vertical side member 60 provided on the vertical surface 62, The width W2 of the blade 24 and the width W2 of the horizontal side member 58 may be shorter. The width W1 is 7 mm, and the exemplary width W2 is 9 mm. The vertical side members 60 are mutual In order to allow placement toward each of the opposite vertical surfaces 62, the width W2 is The width W1 is larger. The distal end 64 of the core 56 is the distal portion 3 of the blade 24. It is engaged by 8. The proximal end 66 of the core 56 is as described in more detail below. It is preferable that it be positioned inside the blade hub 30 to facilitate heat transfer from the teeth 44. The heat transfer core 56 has a positioning slot 68 used in conjunction with the blade hub 30 shown in the figure. As shown in Figure 6, the core 56 is provided with a positioning slot 68. It may be formed without, or during the machining of the saw blade assembly as described in more detail below. It may have an elongated hole 68 formed as part of it. Alternatively, as shown in Figure 5, When using the rad hub 30', it is not necessary to provide one of the positioning slots 68 in the core 56. .

[0045] The vertical side member 60 and the inner portions of the proximal portion 34 and the distal portion 38 are as follows: As will be explained in more detail below, it may also be a single, integrated product.

[0046] The degree of overlap of the core 56 with the blade hub 30,30' is such that the force is transmitted through the main body portion 46. The desired capacity and thermal energy of the blade hub 30,30' that transmits to the teeth 44 to the blade hub Considering both the desired capacity of the blade hub 30,30' transmitted through the 30,30'. It may be modified. It may be further modified to a shape other than those shown in Figures 3 and 5. For example Alternatively, a shape that allows the core 56 to extend almost entirely beneath the blade hub 30,30' is also possible. It is possible. By inserting the core in this way, the blade hub 30,30' below The area of ​​the core 56 is increased to the vicinity of the blade mounting fixture 28, thereby, This makes it possible to achieve faster heat transfer from the blade 24 to the blade mounting fixture 28.

[0047] The main body portion 46 may have a biocompatible surface. The core 56 is made of a non-biocompatible material. For example, when formed from substantially pure copper, the upper horizontal surface 57 and lower horizontal surface 5 of the core 56 9, and by arranging the side members 58, 60 to cover the vertical surface 62, the biocompatibility table A layer forming a surface is preferable. Alternatively, a biocompatible surface may have an alternative form of layer. For example, provided by integrally formed layers and coatings as described below based on Figure 15 It is also possible that the layer 72' is integrated with the heat transfer core 56. For example, if the core 56 If it was made of aluminum, the biocompatible surface layer would be a layer of aluminum oxide. In other words, it is preferable to have an anodized aluminum layer. Alternatively, a layer of biocompatible material. 72' refers to other materials and coating methods, such as polymer film formation, biocompatible metals, for example. It may also be provided by gold electroplating or titanium nitride deposition.

[0048] The surgical saw blade 24 may be part of a thermal management system 70. The Tem 70 is positioned on top of the blade mounting fixture 28, as shown in Figures 8A and 8B. The mounting bracket 28 is equipped with an auxiliary heatsink 32, 32' integrated into it. Sections 32,32' have the inherent ability of the blade mounting fixture 28 to act as a heat sink. Therefore, it is called auxiliary heatsink 32,32'. Heatsink 32,32' This may be a passive heatsink 32, or an active heatsink 32'. Alternatively, the heatsinks 32, 32' are attached to the blade hub 30 and blade mounting of the blade 24. It is connected to the surgical saw blade 24 via the attachment 28. Alternatively, the heatsink 3 2,32' may also be connected to blade 24 by an intermediate heat transfer path not shown. The thermal management system 70, which includes heat sinks 32, 32', is used for the blades 24 and blades. It may be independent of the Do form and may also be useful when used with conventional saw blades. It will be effective.

[0049] Figure 8A shows an exemplary heatsink with multiple cooling fins 74 extending from the heatsink base 76. The passive heatsink 32 is shown. Heat is transferred from the blade 24 to the base of the heatsink 32. The heat is transferred to the fins 74 and released into the surrounding air. The heat sink 32 absorbs the heat. Because it does not require supplemental power to perform the function of absorbing and dissipating energy, It is called "passive".

[0050] Figure 8B shows an example with an electrically operated heatsink, such as a Peltier cooler 32'. This shows an exemplary active heatsink 32'. The active heatsink 32' is a blade It is positioned on the mounting fixture 28. Multiple wires 78 are used to power the active human sink. It is connected to an electronic control unit 80 to obtain the temperature of the blade mounting fixture 28 (not shown). The feedback signal from the sensor is transmitted to the control device 80. Power supply 82, For example, power from the battery is supplied by the control device 80 to the Peltier cooler 32' or other power supply It is sent to a dynamic heat sink. The control device 80 and power supply 82 are integrated into the handpiece 22. The included control device and power supply may be the same. Although not shown, this power and signal Such transmission may be performed wirelessly. The heat sink 32' absorbs thermal energy and Because it uses auxiliary power, such as electricity, to perform the function of dissipating it, it is "active It is called ")".

[0051] A fan (not shown) is positioned to blow air across fin 74. An alternative (not shown) active heat dissipation mechanism exists, which does not have such a mechanism. The dynamic heatsink 32 may be provided with support. This fan is an electronic control unit. It would be good if it could respond electrically to that.

[0052] The following is a single step involving multiple steps for manufacturing the saw blade 24, with reference to Figure 9-12C. An example of such a method will be described.

[0053] A sufficiently strong material, for example, 300 series or 400 series stainless steel, tungsten carbide, Alternatively, titanium may be used for the distal portion 38, and consequently for the cutting edge 42 and teeth 44, and the side members 58, 60 Identified and selected as a first material used to form the first material It is preferable that the material be biocompatible.

[0054] A thermally conductive material having a thermal conductivity significantly higher than that of the first material is used as the heat transfer core. Identified and selected as a second material for 56. Examples of materials suitable for heat transfer cores. Examples include, but are not limited to, copper and aluminum. The term "copper" here refers to pure copper and copper-based alloys. Similarly, in this specification... The term "aluminum" used here refers to pure aluminum and aluminum This refers to a monoxide-based alloy. Examples of alternative thermally conductive materials include other materials, compounds, composite materials, and Laminate materials are one example. For instance, alternatives to aluminum and copper are a second example of materials. A typical layered material is mentioned. A further alternative example of the second material is the cutting edge 42 and the proximal portion 34 A fine steel mesh grid is placed between the two, and copper is filled into the cavities of the mesh. Examples include fine mesh grids made of steel. Such examples are illustrative and comprehensive. This is not intended to be the case.

[0055] One exemplary method for fabricating the saw blade 24 shown in Figure 9-12C is as follows: A laminate material in the form of a blade blank sheet assembly 96 including the second material, The first layer 92, the second layer 90, and the intermediate layer placed between them form a It includes a step.

[0056] A substantially planar first sheet of a first material having an exemplary thickness T2 of 0.08 mm. A first layer 92 in the form of 92 is prepared. The first sheet 92 is a blank sheet assembly. A first planar area A1 that depends on available manufacturing equipment suitable for forming and processing body 96 It has a substantially planar first material having an exemplary thickness T2 of 0.08 mm. The second sheet 90 is in the form of a second layer 9 composed of a second sheet 90. 0 is prepared. The second sheet 90 has a second planar area that is substantially equal to the first planar area A1. It has.

[0057] The intermediate layer consists of a first material that forms part of the intermediate layer, for example, stainless steel, and a part of the intermediate layer It contains a second material, for example, copper. In one exemplary method, the second material for the intermediate layer Material 1 is prepared as a third sheet 84 of the first material having a first planar area A1. Furthermore, the intermediate layer contains multiple cores 56 formed from a second material.

[0058] The first flat area A1 of the third sheet 84 is a predetermined number of saw blades 24, as shown in Figures 9 and 10. In the example given, it is large enough to allow for the manufacture of 12 saw blades 24. There are multiple pockets 86, specifically one for each of the blades 24 that are formed. A pocket 86 is formed in the third sheet 84 to receive the heat transfer core 56. The exemplary pocket 86 has predetermined dimensions that are complementary to the dimensions and shape of the heat transfer core 56. Specifically, pocket 86 has substantially the same dimensions and shape as core 56. It has the same shape. Therefore, the core 56 has substantially the same dimensions and shape as the pocket 86. And it will have a shape. For example, the third sheet 84 has a thickness of 0.23 mm. These pockets 86 are useful for the sheet 84 for making the blade 24. It is desirable that they be oriented in a way that maximizes utilization. Complete utilization is 100%, and In this case, there will be no waste of the third sheet, 84.

[0059] Pocket 86 can be formed by punching, die-cutting, laser cutting, and any suitable alternative forming method. Therefore, it is desirable that it be formed. Pockets are not necessarily required, but the third sheet 84 is complete. It should penetrate completely. In this example, pocket 86 completely penetrates a portion of the third sheet. This is because the exemplary third sheet 84 is substantially the same thickness as the exemplary core 56. This is because it has a thickness T1.

[0060] Multiple transmission cores 56 are formed from a second thermally conductive material. Figures 9 and 10 show the present specification. Twelve heat transfer cores 56 are shown to illustrate the concepts described in the book, but this number The manufacturing method and manufacturing equipment, as well as their capabilities, may be modified to suit the circumstances. Core 56 One way to form it is to cut out the core 56 from a sheet of thermally conductive material. A thermally conductive material selected as the transfer core material, for example, consisting of copper, aluminum, etc. A sheet (not shown) having an exemplary thickness T1 of 3 mm is prepared. A core 56 having the desired shape and dimensions is then cut out. An exemplary shape is shown in Figure 6. The thickness T1 is shown in the cross-sectional view of Figure 7. The core 56 is cut from the sheet using any commercially available material. This should be achieved by practical methods such as die cutting and laser cutting. Exemplary methods include die cutting and laser cutting. These are some examples.

[0061] The heat transfer core 56 is positioned within the pocket 86 of the third sheet 84. The relative dimensions of the core 56 allow for easy placement of the core 56 within the pocket 86. The choice of fitting method is preferable to result in press-fitting or sliding fitting of the core 56 into the socket 86. The use of a sliding mating is in a configuration in which the pocket 86 does not completely penetrate the third sheet 84. That is, before inserting the core 56, the first sheet 92 of stainless steel, i.e., stainless steel The stainless steel sheet 92 is fixed to the first surface 94 of the third sheet 84, and the first sheet 92 is It is more suitable for defining the base of ket 86.

[0062] The first substantially planar sheet 92 is aligned on the first surface 94 of the third sheet 84. They are positioned and then fixed to the third sheet 84. The third sheet 84 and the first sheet Sheet 92 is fixed together with sheets 84 and 92 by means of welding, adhesive bonding, etc. They should be connected to each other by means of this.

[0063] The second substantially planar sheet 90 is on the side opposite to the first surface 94 of the third sheet 84. It is positioned and aligned on the second surface 88, and then fixed to the third sheet. Sheet 84 and the second sheet 90 are joined together, for example, by welding, adhesive bonding, etc. By fixing them together, they should be connected to each other.

[0064] The vertical side member 60 is composed of a part of the third sheet 84, and similarly the third sheet The inner parts of the proximal portion 34 and distal portion 38, which are composed of parts of 84, are alternately It connects to the vertical side member 60 formed from the third sheet 84 and the nearby The distal portion 34 and the distal portion 38 are formed as a single, integrated part. ru.

[0065] The core 56 is constrained in a first direction between the first and second planar sheets 92, 90. , and is constrained in the second direction by the third sheet 84. Sheets 90, 92 are the finished saw This results in an exemplary horizontal side member 58 that covers the core 56 within the blade 24. In addition, the horizontal side members 58 provided by sheets 90 and 92 are advantageously, During use of Blade 24, the core 56 is retained in the pocket 86 of the finished Blade 24. This will happen.

[0066] In one alternative configuration, the pocket 86 of the third seat 84 completes the third seat 84. It does not penetrate completely. After the core 56 is placed in this pocket 86, as described above. The second sheet 90 is held within the pocket 86 by fixing it on the third sheet 84. Therefore, since the core 56 is held in this manner, there is no need to provide the first sheet 92.

[0067] In an alternative configuration, the first and third sheets 92,84 have equal thickness, for example, 0 It has a thickness of 0.19 mm, and pockets 86 may be formed in each of the sheets 92 and 84. In total, the depth of each pocket 86 is substantially half the depth of the core 56 thickness TI, for example, 0. It will have 11mm. Sheets 92 and 84 are fixed together. Core 56 is sheet It is placed in one pocket 86 of T92,84. Then the second sheet 92 is the third It is aligned with seat 84 and lowered onto the third seat 84. Then, seat 84, 9 The values ​​0 are fixed to each other.

[0068] The assembled core 56 and sheets 84, 90, 92 form a blank sheet assembly 96. It is composed of multiple, in the illustrated example, 12 saw blade blanks 98, which are assembled into a blank sheet. It is cut from 3D 96. The outline of the blade blank 98 is the blank sheet assembly 96. It is shown above by a dashed line.

[0069] The blade blank 98 is essentially what remains after being cut from the sheet assembly 96. , as shown in Figure 12A. The blade blank 98 is as shown in Figures 12B and 12C. Then, it is further processed to produce the finished blade 24. The blank 98 is die-cut. Alternatively, it may have a position-holding elongated hole 52 formed by another suitable material cutting method, This results in the partially finished blank 98 shown in Figure 12B. Alternatively, the material cutting is performed with the blade blank 98 as part of the blank sheet assembly 96. This may be done at some point. The teeth 44 are formed by cutting the blade 42. To achieve the final shape and surface finish shown in Figures 12C and 12C, polishing and finishing are performed. It is good to polish it. The engaging arc 50 connects the blade blank 98 to the blank sheet assembly 98. It is preferable that it be completely formed by the process of cutting from. The engaging arc 50 is alternatively, After the blade blank 98 is cut from the blank sheet assembly 96, it is machined or polished. It may be formed by polishing or partially formed by polishing.

[0070] In yet another example of this method not shown, the intermediate layer comprising the first and second materials is the Multiple parallel strips, i.e., ribbons, made of material 1 and material 2 are arranged alternately. It may be provided by the following. The strip of the first material is formed from the first material To adapt to the formation of a blank 98 having distal portion 38, a small portion of the distal portion 38 It is also preferable that it has a first width substantially equal to its length. Alternatively, the strip of the first material may be It has both a proximal portion 34 and a distal portion 38 that are substantially formed from a first material. To adapt to the formation of the blank 98, it may be even broader, for example, the proximal portion 34 and The distal portion 38 may have a width equal to at least the combined length. The strip of the second material is It is preferable that it has a second width substantially equal to the length of the proximal portion 34 and the main body portion 46. The strip of the first material is welded or bonded to the opposing first and second sheets 92 and 90 by means of welding or adhesive bonding. Therefore, it is good to fix it in place. Next, the blade blank 98 is assembled into the blank. They are cut out from the assembly. Sheets 92 and 90 form the horizontal side members 58. Next, as mentioned above, the blank 98 will be processed into blade 24.

[0071] An alternative method for forming the blade 24 is additive manufacturing, i.e., 3D printing. May be used. The entire blade 24 may be manufactured by additive manufacturing. Or, The entire blank 98 may be formed by additive manufacturing and then finished. Alternatively, the components of the blade blank, for example, the core 56, may be formed by additive manufacturing. Next, it may be incorporated into the blank sheet assembly 96. Or, the blade blank The components, for example, the core 56, the side members 58, 62, the distal portion 38, and the proximal portion 34 They may be formed individually or in combination, and then assembled.

[0072] When in use, the blade hub 30 of the finished blade 24 is inserted into the blade mounting bracket 28. It is then accepted and then engaged. The blade 24 is on the shaft 10 of the mounting fixture 28. It is preferable that it pivots around 0. The axis 100 is the effective axis of the blade 24. It is substantially perpendicular to the planar surface 102. The tooth 44 is on the surface of the surgical site, for example It is preferable to direct it toward the bone surface. The blade 24 on the surface of the surgical site and the handpiece 22 This movement causes tooth 44 to be swept back and forth in the plane and across the bone, thereby The bone material is then cut away from the bone. At this time, the cut surface has a width substantially equal to the blade thickness TS. The elongated foramen is then removed.

[0073] The energy from the motor (not shown) inside the handpiece 22 is mostly from the teeth 44 It is supplied and the bone is removed. The heat generated at the removal site while tooth 44 is removing the bone is transmitted to the bone. Heat is conducted from the teeth 44 to the fixture 28 by the cord 24. Heat conduction through the core 56 The speed is greater and faster than the speed of heat conduction through steel, and this is why the heat transfer core 5 The saw blade 24 having 6 can operate at lower temperatures than conventional steel blades. The transfer of heat from the teeth 44 through the blade 24 includes conduction, radiation, and convection through the core. It is facilitated by the transfer mechanism. Heat is transferred by both convection and radiation, which are combined with conduction. In the direction transverse to the length L1 of the heat transfer core 56 of the blade 24, the blade 24 and the core It dissipates from A56 into the surrounding air. Core 56 conducts heat along the blade length L2. Some of this heat is transferred to the blade through a relatively thin layer of steel that defines the horizontal side member 58. The vibration is transmitted to the surface 102, and then to the surrounding environment, for example, the air. The heat conducted to the outer surface 102 of the air is dissipated by radiation and convection. This is because air This is because it moves across the outer surface 102 of the blade.

[0074] Furthermore, heat is conducted from the teeth through the core 56 to the fixture 28. Heat conduction away from the body is prevented by providing heat sinks 32, 32' on the mounting fixture 28. This is further facilitated. Heat removal from heat sinks 32, 32' is facilitated by blades 24 and cutting. This will enhance heat removal from the affected area.

[0075] The average temperature of the teeth 44 of a commercially available steel blade used to cut wood pieces is determined at the end of a predetermined cutting cycle. Tests have revealed that it can sometimes reach 134°C. This includes copper core 56. If the disclosed blade 24 cuts a piece of wood under the same conditions, the average of the teeth of the blade 24 The temperature was 72°C at the end of the excision cycle. Assuming an ambient temperature of 21°C, commercially available When the blade disclosed herein is used in place of the steel blade, the blade teeth are exposed to the atmosphere. The temperature rise was reduced by 55%. The blade 24 used in the test was as described above. It is substantially the same as the one used. In both tests, the blade mounting fixture used was a commercially available one. It is a device that does not have any auxiliary heatsinks, either passive or active. Due to the decrease in performance, the resection that would have been performed using cooling irrigation if blade 24 had not been used is now This makes it possible to perform the procedure without using cooling irrigation, thus eliminating the need for cooling irrigation. It is possible to avoid the problems caused by this, such as a decrease in the visibility of the excision site. Yes.

[0076] Figure 13-16 shows exemplary alternative surgical saw blades 24', 24''. The reference numbers (e.g., 24, 24', 24'') refer to similar parts with the differences described. This refers to the product and its distinctive features.

[0077] Figures 13, 14, and 15 show in detail an exemplary alternative surgical saw blade 24'. The saw blade 24' has a longitudinal beam 61' and a side member 60 Aside from the lack of certain features, it's very similar to the Blade 24.

[0078] The proximal portion 34' of the blade 24', positioned at the proximal end 36' of the blade 24', The hub is equipped with, for example, a blade hub 30 or a blade hub 30'. The distal portion 38' of the blade 24', positioned at the distal end 40' of 4', is equipped with a cutting edge 42'. The cutting edge 42' is equipped with cutting teeth 44'. The main body portion 46' has a proximal portion 34' and It is positioned between the distal portion 38' and the cutting edge 42', and connects them to each other. Long axis 48 However, it extends from the proximal end 36' to the distal end 40', effectively dividing the blade 24' into two equal parts. The saw blade 24' is substantially symmetrical with respect to the axis 48, and in the direction intersecting the axis 48. The opposite sides of blade 24' in Figure 13 are essentially mirror images of each other. The blade 24' and its body portion 46' shown in 14 are substantially planar. Similar to the 24' blade, the 46' body of the 24' blade is half the length of the saw blade L2'. It has a length L1' that exceeds this.

[0079] Similar to blade 24, the distal portion 38', and consequently the cutting edge 42' and teeth of blade 24', are also affected. 44' may be formed from the first material mentioned above.

[0080] The proximal portion 34' is formed from the same material as the distal portion 38', i.e., the first material. It would be good if it were done so. The illustrated proximal portion 34' is substantially the same as the proximal portion 34. The blade hub 30 has an engaging arc 50' and a plurality of position-holding elongated holes 52'. As mentioned earlier, the blade hub configuration is illustrative.

[0081] The main body portion 46' has a second thermal conductivity greater than the first thermal conductivity of the aforementioned second The heat transfer core 56' is made of a material, for example, copper, aluminum, or composite material. The heat transfer core 56' is connected to the first half 56A' and by the longitudinal beam 61'. It is substantially divided into two halves 56B'. The longitudinal beam 61' has a distal portion 38 It is preferable that it be formed from the same material as the material of '. The longitudinal beam 61' is the proximal portion 34 The longitudinal beam 61 extends between the ' and the distal portion 38', connecting them to one another. 'furthermore, it has an exemplary third width W3' which is substantially narrower than the blade width W2. The width W2 is 9mm, as mentioned above. An example width W3' is 2mm. Main body 46' also includes a pair of horizontal side members 58' on opposite sides. Side member 58 ' extends in the longitudinal direction, that is, in the direction of the major axis 48, from the proximal portion 34' to the main body portion 46 It is more likely to extend across the ' and into the distal portion 38', or alternatively, into the proximal portion 34' and the distal portion. It may be positioned on each part of the positional portion 38' and composed of these parts.

[0082] One of the horizontal side members 58' is the respective surface 57A' of the core halves 56A and 56B. It is positioned across the upper horizontal plane 57', which consists of 57B', and above the beam 61. The opposite horizontal side member 58' is the respective surface 59A' of the core halves 56A' and 56B'. It is positioned across the lower horizontal plane 59', which consists of 59B', and on the beam 61'. The upper horizontal surface 57' and the lower horizontal surface 59' of core 56' are each the length of core 56'. It extends vertically in the longitudinal direction. As shown in Figure 7, the upper horizontal plane 57' and the lower horizontal plane Surface 59' is positioned on two opposite sides of core 56', on their opposite sides. They are connected to each other by the vertical surface 62' that is positioned above them. Also, the vertical surface 62' is connected to the core 5 It extends longitudinally along its 6' length, is exposed, and can come into contact with the outside.

[0083] The inner portions of beam 61' and the proximal portion 34 and distal portion 38 are a single unit It may be formed as a body fragment.

[0084] The main body portion 46' may have a biocompatible surface. The core 56' is made of a non-biocompatible material. If formed from material, the horizontal side member 58' is formed on the upper horizontal plane 57' and the lower horizontal plane 59 It is preferable to provide a layer that forms a biocompatible surface by placing it on top. Figure 13 As shown in -15, if the vertical surface 62' of the core 56' is exposed, i.e., vertical If not covered by a perpendicular side member, a biocompatible material, such as aluminum oxide, M, that is, thin layers of anodized aluminum, polymer coatings, gold, titanium nitride, etc. It is desirable that the surface layer 72' is covered. Such a surface layer 72' should be relatively thin (for example, 0 If formed to a thickness of 0.01 mm, it will substantially affect the final width W2 of the 24' blade. There is nothing to be gained.

[0085] Figures 16 and 17 show in detail an exemplary alternative surgical saw blade 24''. The blade 24'' has a core width of 56'' W1'' and a total width of the saw blade 24'' W2''. Except that the width W2'' of the horizontal side members 58 on opposite sides is equal to the blade 24 and They are very similar. The vertical side member 60 is not used in the saw blade 24''. Example The exemplary width W1'' is 9 mm, and the exemplary width W2'' is 9 mm. Core 56' The distal end 64 of the core 56 is engaged by the distal portion 38 of the blade 24''. The proximal end 66 of the tooth, as mentioned above, facilitates heat transfer from tooth 44. It is good if it is inside the radar hub 30''. The vertical plane 62'' is in front of Figure 15. As described above, to provide a biocompatible surface 72'', it is provided with a layer 72''. stomach.

[0086] Surgical saw blade, blade thermal management system, and method for manufacturing surgical saw blade. The entire structure has been disclosed. The disclosed blade, when the tooth pitch and profile are set to a predetermined value. Improvements that allow for faster excision when the device is operated until a predetermined temperature is reached at the excision site. This improves surgical efficiency, and when the tooth pitch is made fine, the temperature does not exceed a predetermined level. An improved design that allows cutting at the same speed as a non-precision blade with coarse teeth within a certain range. This results in an improved surgical saw system that provides greater precision.

[0087] In drawings, the same reference number refers to the same element. Furthermore, several of these elements... Some or all of the media, processes, and systems described herein may be changed. Regarding methods, rules of thumb, etc., the steps of such processes follow a certain regular order. Although it is described as being carried out in this manner, such a process is carried out in the order described herein. Please understand that the description steps may be carried out in an order other than the introduction. Some steps may be performed simultaneously, and other steps may be added. It is understood that some steps described herein may be omitted. In other words, the process description herein illustrates several embodiments. It is presented for the purpose of and should never be interpreted as limiting the scope of the claims. stomach.

[0088] Therefore, it is important to understand that the above explanation is intended to be illustrative and not restrictive. Please understand. Reading the above explanation will reveal many embodiments and uses other than those presented. It will be. The scope of the invention should not be determined in accordance with the above description, but rather , determined in accordance with the attached claims and the entire scope of equivalents for which such claims are granted It should be noted that the technologies discussed in this specification may develop further and that the disclosed technologies It is clearly intended that stems and methods will be included in such future embodiments. In short, please understand that this application is modifiable and changeable.

[0089] As used herein, the adverb "substantially" refers to the shape, structure, etc. Construction, measurement values, quality, time, etc., are related to materials, machining, manufacturing, data communication, calculation speed, etc. By perfection, one deviates from precisely described geometric forms, distances, measurements, qualities, time, etc. This means there is a possibility of escape.

[0090] All terms used in the claims are as specified herein, unless expressly indicated to be contrary to them. It is intended to convey the usual meaning that is understood by scientific and technological intellectuals. In particular, singular articles such as "a," "the," and "said" clearly indicate that the claims are contradictory. Unless explicitly indicated otherwise, it should be read as referring to one or more of the specified elements.

[0091] The abstract is provided to enable readers to quickly ascertain the characteristics of the technical disclosure. It is provided with the understanding that the abstract is not to be used to interpret or limit the scope or meaning of the claims. In addition, in the aforementioned “Modes for Carrying Out the Invention,” various features are grouped into various embodiments in order to streamline the disclosure. This method of disclosure should not be interpreted as reflecting an intention that the claimed embodiments require more features than those explicitly described in each claim. Rather, as shown in the following claims, the subject matter of the present invention is not necessarily encompassed in all features of a single disclosed embodiment. Therefore, although the following claims are included in the “Modes for Carrying Out the Invention,” each claim is independent as individually claimed subject matter. The claims at the time of filing were as follows: [Claim 1] Surgical saw blade (24,24',24''), A cutting edge (42,42') having multiple teeth (44,44'), wherein the cutting edge (42,42') is substantially formed entirely from a first material having a first thermal conductivity, The proximal portion (34, 34', 34'') has a blade hub (30, 30'), A main body portion (46, 46', 46'') is positioned between the cutting edge (42, 42') and the proximal portion (34, 34', 34'') and connects the cutting edge (42, 42') and the proximal portion (34, 34', 34'') to each other, A heat transfer core (56, 56', 56A', 56B', 56'') formed from a second material having a second thermal conductivity at least twice that of the first thermal conductivity, wherein the heat transfer core (56, 56', 56A', 56B', 56'') has at least two first core surfaces (57, 57A', 57B', 57'') extending longitudinally on opposite sides across the width of the core (56, 56', 56A', 56B', 56'', At least two longitudinally extending first side members (58, 58') are arranged on the longitudinally extending first core surface (57, 57A', 57B', 57'') respectively, and are opposite each other. The main body section (46, 46', 46'') includes, A surgical saw blade (24, 24', 24'') equipped with [specific features / features]. [Claim 2] The surgical saw blade (24,24',24'') according to claim 1, wherein the cutting edge (42,42') is formed of steel, and the longitudinally extending first side member (58,58') is also formed of steel. [Claim 3] The surgical saw blade (24,24',24'') according to claim 1, wherein the cutting edge (42,42') is formed of steel, and the proximal portion (34,34',34'') is also substantially entirely formed of steel. [Claim 4] The surgical saw blade (24,24',24'') according to claim 1, wherein the cutting edge (42,42') is positioned at the distal end of the blade (24,24',24''), and the cutting edge (42,42') is formed of steel. [Claim 5] The surgical saw blade (24,24',24'') according to claim 1, wherein the cutting edge (42,42') is positioned at the distal end of the blade (24,24',24''), and the saw blade (24,24',24'') is substantially symmetrical with respect to a long axis extending from the blade hub (30,30') to the teeth (44,44'). [Claim 6] A surgical saw blade (24, 24', 24'') according to claim 1, wherein a steel sheet is arranged to cover the first core surface (57, 57A', 57B', 57'') in order to provide the side members (58, 58', 60). [Claim 7] The surgical saw blade (24,24',24'') according to claim 1, wherein the cutting edge (42) is formed of steel, and two second side members (60) on opposite sides are also formed of steel, the second side members (60) are connected to the first side member (58) and extend along each of two second core surfaces (59) on opposite sides that extend across the thickness of the heat transfer core (56). [Claim 8] The cutting edge (42,42') is located at the distal end of the saw blade (24,24',24'') opposite the blade hub (30,30'), The main body portion (46, 46', 46'') has a length exceeding half the length of the saw blade (24, 24', 24''), The surgical saw blade (24, 24', 24''), comprising the proximal portion (34, 34', 34''), the cutting edge (42, 42'), and the main body portion (46, 46', 46''), is substantially planar and has substantially constant thickness. A surgical saw blade (24,24',24'') according to claim 1. [Claim 9] The surgical saw blade (24, 24', 24'') according to any one of claims 1 to 8, wherein the heat transfer core (56, 56', 56A', 56B', 56'') is substantially made of copper. [Claim 10] The surgical saw blade (24, 24', 24'') according to any one of claims 1 to 8, wherein the heat transfer core (56, 56', 56A', 56B', 56'') is substantially made of aluminum. [Claim 11] Surgical saw blade (24,24',24''), A cutting edge (42,42') having multiple teeth (44,44'), wherein the cutting edge (42,42') is substantially formed entirely from a first material having a first thermal conductivity, The proximal portion (34, 34', 34'') has a blade hub (30, 30'), A body portion (46, 46', 46'') is positioned between the cutting edge (42, 42') and the proximal portion (34, 34', 34'') and connects the cutting edge (42, 42') and the proximal portion (34, 34', 34'') to each other, and is a heat transfer core (56, 56', 56A', 56B', 56'') formed from a second material having a second thermal conductivity at least twice that of the first thermal conductivity, wherein the core (56, 56', 56A', 56B', 56'') A heat transfer core (56, 56', 56A', 56B', 56'') having at least two first core surfaces (57, 57A', 57B', 57'') extending longitudinally on opposite sides and spanning the width, and a main body portion (46, 46', 46'') comprising at least two first side members (58, 58') extending longitudinally on opposite sides, respectively, disposed on the first core surfaces (57, 57A', 57B', 57'', It is equipped with a surgical saw blade (24, 24', 24'') and A blade mounting fixture (28) is configured to receive the aforementioned blade hub (30, 30') and is connected to the saw handpiece (22), and the blade mounting fixture (28) is equipped with a heat sink (32, 32'), A surgical saw blade thermal management system (70) is provided. [Claim 12] The heat sink (32) is a passive heat sink (32) in the surgical saw blade thermal management system (70) according to claim 11. [Claim 13] The surgical saw blade thermal management system (70) according to claim 11, wherein the heat sink (32') is an active heat sink (32'). [Claim 14] The surgical saw blade thermal management system (70) according to claim 11, wherein the heat sink (32') is an electrically operable heat sink (32'). [Claim 15] A surgical saw blade thermal management system (70) according to any one of claims 11-14, wherein the heat transfer core (56, 56', 56A', 56B', 56'') is substantially composed of copper. [Claim 16] A method for manufacturing a surgical saw blade (24, 24', 24''), A step of forming layers of a blank sheet assembly (96), wherein the layers are A substantially planar first steel sheet (92) having a first thickness and a first area, A substantially planar second steel sheet (90) having a second flat area substantially equal to the first flat area and a second thickness substantially equal to the first thickness, An intermediate layer (84, 56, 56', 56A', 56B', 56'') disposed between the first sheet (92) and the second sheet (90), comprising both steel constituting the cutting edge (42, 42') and a second material having a thermal conductivity at least twice that of the first material constituting the heat transfer core (56, 56', 56A', 56B', 56'' within the formed blade (24, 24', 24''), Steps including, The steps include fixing the first and second sheets (92, 90) to opposite sides of the intermediate layer (84, 56, 56', 56A', 56B', 56'') to form the blank sheet assembly (96), A step of cutting out a plurality of saw blanks (98) from the blank sheet assembly (96), wherein each blank (98) comprises a heat transfer core (56, 56', 56A', 56B', 56'') formed from a second material and cutting edges (42, 42') made of steel, The steps include forming a blade hub (30, 30') at the proximal end (36, 36', 36') of the blade blank (98), The steps include forming teeth (44, 44') on the cutting edge (42, 42') of the blade blank (98), Methods that include... [Claim 17] The steel of the intermediate layer (84, 56, 56', 56A', 56B', 56'') is provided as a third steel sheet (84) having a plurality of regularly arranged pockets (86) of a predetermined shape and size formed in the intermediate layer (84, 56, 56', 56A', 56B', 56''), the second material is provided as a plurality of heat transfer cores (56, 56', 56A', 56B', 56'') having substantially the same dimensions and shape as the pockets (86), the method further comprising the step of placing the heat transfer cores (56, 56', 56A', 56B', 56'') in the pockets (86) of the third sheet (84), the method according to claim 16. [Claim 18] The method according to claim 16, wherein the steel of the intermediate layer (84, 56, 56', 56A', 56B', 56'') also constitutes at least a portion of the proximal end (36, 36', 36''). [Claim 19] The method according to claim 16, wherein the first and second steel sheets (92, 90) are welded to the steel of the intermediate layer (84, 56, 56', 56A', 56B', 56''). [Claim 20] The method according to any one of claims 16-19, wherein the second material is substantially composed of copper. [Claim 21] Electric handpiece (22), A blade attachment (28) connected to the aforementioned electric handpiece (22), The heat sink (32,32') connected to the blade mounting bracket (28), A surgical saw system (20) equipped with the following. [Claim 22] The surgical saw system (20) according to claim 21, wherein the heat sink (32) is a passive heat sink (32). [Claim 23] The surgical saw system (20) according to claim 21, wherein the heat sink (32) is a passive heat sink (32) having a plurality of cooling fins (74) extending from a heat sink base (76), and the heat sink base is connected to the blade holder (28). [Claim 24] The surgical saw system (20) according to claim 21, wherein the heat sink (32') is an active heat sink (32'). [Claim 25] The surgical saw system (20) according to claim 21, wherein the heat sink (32') is an electrically operable heat sink (32'). [Claim 26] The surgical saw system (20) according to claim 21, further comprising a fan positioned to blow air across the heat sink (32,32'').

Claims

1. A surgical saw system (20) used with surgical saw blades (24, 24', 24''), Electric handpiece (22), A blade attachment connected to the aforementioned electric handpiece (22), A heat sink connected to the blade mounting fixture (28) for removing heat from the surgical saw blade by heat conduction, wherein the heat sink is positioned on and integrated with the blade mounting fixture and is formed as a component independent of the surgical saw blade (24, 24', 24''), comprising a heat sink (32, 32'), A surgical saw system (20) equipped with the following.

2. The surgical saw system (20) according to claim 1, wherein the heat sink (32) is a passive heat sink (32).

3. The surgical saw system (20) according to claim 1, wherein the heat sink (32) is a passive heat sink (32) having a plurality of cooling fins (74) extending from a heat sink base (76), and the heat sink base is connected to the blade mounting fixture (28).

4. The surgical saw system (20) according to claim 1, wherein the heat sink (32') is an active heat sink (32') disposed on the blade mounting fixture.

5. The surgical saw system (20) according to claim 1, wherein the heat sink (32') is an electrically operable heat sink (32').

6. The surgical saw system (20) according to claim 3, further comprising a fan positioned to blow air across the plurality of cooling fins (74) of the heat sink (32, 32').

7. The surgical saw system (20) according to claim 4, further comprising a control device electrically connected to the heat sink and a temperature sensor, wherein the temperature sensor is connected to the blade mounting fixture and configured to transmit a feedback signal to the control device.

8. The blade holder further comprises a surgical saw blade (24, 24', 24'') connected to the blade holder, the surgical saw blade (24, 24', 24'') A cutting edge (42, 42') having multiple teeth (44, 44'), wherein the cutting edge (42, 42') is substantially formed entirely from a first material having a first thermal conductivity, A proximal portion (34, 34', 34'') comprising a blade hub (30, 30'), wherein the blade hub is configured to connect the surgical saw blade (24, 24', 24'') to the heat sink, A body portion (46, 46', 46'') is positioned between the cutting edge (42, 42') and the proximal portion (34, 34', 34'') and connects the cutting edge (42, 42') and the proximal portion (34, 34', 34'') to each other, and is a heat transfer core (56, 56', 56A', 56B', 56'') formed from a second material having a second thermal conductivity at least twice that of the first thermal conductivity, wherein the core (56, 56', 56A', 56B' A heat transfer core (56, 56', 56A', 56B', 56'') having two longitudinally extending first core surfaces (57, 57A', 57B', 57'') on opposite sides that extend across the width of the 56'', and a main body portion (46, 46', 46'') comprising two longitudinally extending side members (58, 58') on opposite sides, respectively, positioned on the longitudinally extending first core surfaces (57, 57A', 57B', 57'', Equipped with, The blade mounting fixture (28) is configured to receive the blade hub (30, 30'), is connected to the saw handpiece (22), and has a heat sink (32, 32'), according to any one of claims 1 to 7, the surgical saw system (20).

9. The surgical saw system (20) according to claim 8, wherein the heat transfer cores (56, 56', 56A', 56B', 56'') are substantially made of copper.

10. The surgical saw system (20) according to claim 8, wherein the cutting edge (42, 42') is formed of steel, and the proximal portion (34, 34', 34'') is also substantially entirely formed of steel.

11. The surgical saw system (20) according to claim 8, wherein the cutting edges (42, 42') are positioned at the distal end of the blade (24, 24', 24''), and the cutting edges (42, 42') are formed of steel.

12. The cutting edge (42, 42') is located at the distal end of the saw blade (24, 24', 24'') opposite the blade hub (30, 30'), The main body portion (46, 46', 46'') has a length exceeding half the length of the saw blade (24, 24', 24''), The surgical saw system (20) according to claim 8, wherein the surgical saw blade (24, 24', 24'') comprising the proximal portion (34, 34', 34''), the cutting edge (42, 42'), and the body portion (46, 46', 46'') is substantially planar and has substantially constant thickness.

13. The surgical saw system (20) according to any one of claims 8 to 12, wherein the heat transfer core (56, 56', 56A', 56B', 56'') is substantially made of aluminum.

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