Surgical cutting tools and attachment mechanisms for cutting tools, and related systems and methods - Patents.com

Abstract

The cutting tool and attachment mechanism are configured to releasably and securely couple the cutting tool to a cutting instrument. The cutting tool has a tang end, a tip end, and a cutting edge at the tip end. The attachment mechanism includes a first clamping member having a first engagement surface and a second clamping member having a second engagement surface. The second clamping member further includes a pair of axially spaced projections extending from the second engagement surface and a pair of laterally spaced projections extending from the second engagement surface. The attachment mechanism further includes an adjustment mechanism configured to selectively adjust a distance between the first engagement surface and the second engagement surface. The tang end includes an axially extending coupling slot and a pair of resiliently deformable fastening members disposed on sides of the tang end that extend laterally outward as they extend axially from the tang end toward the tip end.

Description

[Technical field]

[0001] [CROSS-REFERENCE TO RELATED APPLICATIONS] This application claims priority to U.S. Provisional Application No. 63 / 296,849, filed January 5, 2022, entitled "SURGICAL CUTTING TOOLS AND ATTACHMENT MECHANISMS FOR CUTTING TOOLS, AND RELATED SYSTEMS AND METHODS," the entire contents of which are expressly incorporated herein by reference.

[0002] Field of the Disclosure The following disclosure relates generally to a cutting instrument, and more specifically to an instrument for cutting bone or other tissue having a surgical cutting tool and an attachment mechanism configured to be operably coupled to the cutting tool, and configured to ensure that the cutting tool and the attachment mechanism are properly and securely releasably coupled to one another. [Background technology]

[0003] Typically, a cutting tool is coupled to a cutting instrument that in some way facilitates movement of the cutting tool to cut tissue. Many cutting instruments are configured to couple to and facilitate movement of the cutting tool such that one or more cutting edges of the cutting tool effect severing of material engaged by the cutting edges.

[0004] Some cutting instruments are manual cutting instruments that are manually operated by a user. Other cutting instruments are powered cutting instruments that have a power source (e.g., an electric motor) that provides at least some movement of the cutting tool along a cutting path defined by a cutting edge. Some of these powered cutting instruments still require at least some manual manipulation of the cutting tool to perform the tissue (or other material) cut. For example, some powered cutting instruments are configured as hand-held or manually guided instruments that move the cutting tool along a cutting path, but require the user to manually guide the moving cutting tool to and / or through the tissue to cut the tissue (or other material). Other powered cutting instruments are coupled to or form part of a surgical robot that moves the moving cutting tool to and / or through the tissue (or other material) without the user having to manually manipulate the cutting instrument.

[0005] Cutting tools are typically made of a material that is harder than the material that they are being used with. There are many different types of cutting tool configurations (e.g., cutting blades, cutting bits, etc.). A typical saw blade has a thin, flat, elongated shape with a cutting edge at one end. This thin, flat configuration minimizes the size of the path required and allows the blade to make accurate, straight cuts. The cutting edge is generally oriented along a direction perpendicular to the extension (length) of the blade and has multiple teeth and / or abrasives. Thus, when the blade is inserted into the path, the cutting edge may be pressed against the surface of the bone that needs to be resected.

[0006] Cutting blades are configured to cut, for example, when moving in a reciprocating motion (along a forward and / or reverse stroke), when moving along a linear direction (collinear with the cutting edge), when moving along a plane (e.g., two-dimensional), or when moving along a three-dimensional pattern. For example, as shown in the exemplary cutting blade 1 shown in FIG. 1, some blades are configured to rotate or oscillate back and forth within the plane in which the blade is oriented. The cutting blade 1 may be configured to oscillate (oscillate) linearly laterally, or in an arc extending along the plane of the cutting blade 1. This type of cutting blade 1 is referred to as a sagittal saw blade. The exemplary sagittal saw blade (cutting blade 1) is provided with teeth that extend forward from the distal end of the blade body. Other blades are configured to cut while moving back and forth along a longitudinal axis. This type of blade is known as a reciprocating saw blade and is provided with teeth that extend outward from the side edges of the blade body.

[0007] The end of a saw blade typically has a tang (hub) 2 configured to be attached to a cutting device (e.g., a motorized cutting device), as shown in cutting blade 1 of FIG. 1. Typically, the cutting device has a chuck or other attachment mechanism configured to engage the tang 2 to releasably secure the saw blade (or other cutting tool) to the cutting device. For such cutting devices to function properly, the tang 2 of the cutting blade 1 must be properly engaged with the attachment mechanism. Most attachment mechanisms for cutting devices sequentially engage the tang 2 of the saw blade by first inserting the tang 2 of the saw blade into the attachment mechanism and then manipulating the attachment mechanism (usually manually) to lock the saw blade to the cutting device via the attachment mechanism.

[0008] Attachment mechanisms for cutting tools on typical cutting instruments require a user to use two hands to properly couple the cutting tool to the cutting instrument. For example, during a surgical procedure, it is often necessary to surgically cut or remove bone, cartilage, and / or other tissue from a patient (e.g., a mammalian patient). Such attachment mechanisms present problems because a surgeon or technician often does not have both hands readily available during a procedure.

[0009] Additionally, many mounting mechanisms allow the cutting tool to move out of position until it is fully secured manually, resulting in improper positioning of the cutting tool or an unstable connection with the cutting equipment, which can reduce cutting accuracy, cause the cutting equipment or cutting tool to function improperly, and create a hazard.

[0010] Furthermore, many of the mounting mechanisms for cutting tools in cutting equipment rely on inaccurate alignment methods, such as one or more visual indicators on the cutting tool. For example, as shown in FIG. 1, many saw blades (cutting blade 1) have visual indicators 3 on or adjacent to the tang portion 2 that indicate the extent to which the tang portion 2 should be engaged in a corresponding mounting mechanism to properly secure the saw blade (cutting blade 1) to the cutting tool. Such mounting mechanisms rely on visual indicators on the cutting tool to inform the user when the cutting tool is fully and / or properly inserted into the mounting mechanism. In robotic applications, additional steps, such as registering the position of the cutting tool, may be required to ensure proper alignment of the cutting tool. Such visual aids are not necessarily an effective means of determining proper alignment of the cutting tool.

[0011] Although certain aspects of the prior art have been described to facilitate disclosure of Applicant's invention, Applicant has not disclaimed any of these technical aspects, and the present invention may include one or more of the prior art technical aspects.

[0012] Where a document, act, or article of knowledge is referenced or discussed in this disclosure, such reference or discussion is not an admission that such document, act, or article of knowledge, or any combination thereof, was publicly available, was known, was part of the general knowledge, or constituted prior art under any applicable statutory provision, or was otherwise known as being relevant to any attempt to solve any problem related to this specification, at the priority date. Summary of the Invention

[0013] The present invention may address one or more problems and deficiencies of current cutting tools, cutting equipment, and their attachment mechanisms. However, it is believed that the present invention will be useful in addressing other problems and deficiencies in many technical fields. Thus, the claimed invention should not necessarily be construed as being limited to addressing any of the specific problems or deficiencies discussed herein.

[0014] The present disclosure generally relates to current cutting tools, cutting instruments, attachment mechanisms for cutting tools, and related systems and methods. The present disclosure provides an attachment mechanism for a cutting instrument and a cutting tool that allows a user to couple and separate the cutting instrument and the cutting tool with only one hand. Additionally, the present disclosure provides an attachment mechanism for a cutting instrument and a cutting tool that cooperate to ensure that the cutting tool is securely and properly engaged with the attachment mechanism by reducing the risk of backing out (disengagement) and / or misalignment of the cutting tool prior to full securing of the cutting tool by the attachment mechanism.

[0015] In some embodiments, the present disclosure provides an attachment mechanism for a cutting tool that allows a user to securely and reliably couple a cutting tool (e.g., a cutting blade) to a cutting instrument (e.g., a powered (electric) cutting instrument). The attachment mechanism for a cutting tool provides ease of placement, accuracy of placement, reduced risk of misplacement, and ease of removal of the cutting tool from the cutting instrument.

[0016] The attachment mechanism for the cutting tool and corresponding cutting tool feature a mechanical interface that provides tactile and audible feedback to the user to ensure full and proper engagement of the cutting instrument. A feature of the attachment mechanism for the cutting tool and corresponding cutting tool is that it provides a relatively secure engagement of the cutting tool even before fully locking the cutting tool to the cutting instrument.

[0017] In some embodiments, a cutting tool, such as a cutting blade (e.g., a sagittal saw blade), has a locking member or "fingers." When the cutting tool and the corresponding attachment mechanism for the cutting tool are securely coupled (which may be coupled to the cutting instrument), the locking member is elastically deformed or pressed into a deformed state during initial insertion of the cutting tool into the attachment mechanism for the cutting tool, and elastically deforms from the deformed state to a locked state when the cutting tool is fully inserted into the attachment mechanism for the cutting tool. In the locked state of the locking member, the locking member provides a locking force to prevent backing out (falling out) of the cutting tool from the attachment mechanism (even before adjustment of the attachment mechanism to lock the cutting tool within the attachment mechanism), thereby ensuring that the cutting tool is securely and releasably coupled to the attachment mechanism for the cutting tool (and thus the cutting instrument). The locking member generates tactile and audible feedback to the user that the cutting tool is properly seated within the attachment mechanism such that the cutting tool is securely and releasably coupled to the attachment mechanism (and thus the cutting instrument). Additionally, in the locked state, the securing member prevents retraction (falling off) of the cutting tool prior to adjustment of the attachment mechanism to lock the cutting tool within the attachment mechanism.

[0018] It should be noted that the cutting tool may be any cutting tool, such as, for example, a surgical cutting tool configured to cut or resect tissue. As an example, the cutting tool is a cutting blade or saw (e.g., a sagittal surgical saw blade). Similarly, the cutting instrument may be any cutting instrument configured to couple to the cutting tool and facilitate the use of the cutting tool to cut material, such as, but not limited to, a powered cutting tool. As an example, the cutting instrument is a powered cutting instrument (e.g., a powered sagittal saw) that reciprocates or rotates the cutting tool in a direction extending along the cutting edge of the cutting tool (e.g., the direction in which the cutting edge is configured to cut). In some such embodiments, the powered cutting instrument is a hand-held power tool. In some embodiments, the powered cutting instrument is part of or coupled to a robot (e.g., a surgical robot).

[0019] In one aspect, the present disclosure provides a system including a cutting tool and a cutting instrument, the cutting tool including a tang end, a tip, and a cutting edge at the tip, the cutting edge configured to cut a material upon movement of the cutting tool while engaged with the material, the cutting tool having an axial length extending between the tang end and the cutting edge, the cutting instrument including an attachment mechanism configured to releasably securely couple the cutting tool and the cutting instrument, the cutting instrument configured to effectuate or facilitate the movement of the cutting tool. The attachment mechanism comprises a first clamping member, a second clamping member and an adjustment mechanism, the first clamping member having a first engagement surface and the second clamping member having a second engagement surface, a pair of axially spaced projections extending from the second engagement surface and a pair of laterally spaced projections extending from the second engagement surface, and the adjustment mechanism configured to selectively adjust the distance between the first engagement surface and the second engagement surface by relative movement between the first clamping member and the second clamping member. The tang end of the cutting tool comprises an axially extending coupling slot and a pair of resiliently deformable fastening members disposed on sides of the tang end to extend laterally outward as they extend axially from the tang end towards the tip. The tang end of the cutting tool and the attachment mechanism are configured to cooperate with each other such that when the tang end is fully axially inserted into the attachment mechanism between the first engagement surface and the second engagement surface, the pair of axially spaced projections are disposed within the coupling slot and the pair of laterally spaced projections are disposed axially through at least a portion of the fixing member.

[0020] In some embodiments, the cutting tool and the attachment mechanism are configured such that when the tang end is fully axially inserted into the attachment mechanism, one of the pair of axially spaced protrusions abuts an axial end of the coupling slot.

[0021] In some embodiments, the cutting tool and the attachment mechanism are configured such that when the tang end is fully axially inserted into the attachment mechanism, the pair of laterally spaced apart projections are disposed axially past a distal end of the fixation member that defines a free end of the fixation member. In some such embodiments, the distal end of the fixation member defines a laterally inwardly extending end face. In some such embodiments, the end face of the distal end of the fixation member extends further axially as it extends laterally inwardly. In some embodiments, the cutting tool and the attachment mechanism are configured such that when the tang end is fully axially inserted into the attachment mechanism, the pair of laterally spaced apart projections engage the end face of the distal end of the fixation member.

[0022] In some embodiments, the cutting tool and the attachment mechanism are configured such that the locking member is in a deformed state upon full axial insertion of the tang end into the attachment mechanism, hi some such embodiments, the pair of resiliently deformable locking members define (have) a lateral width (maximum width) in the locking member's natural state that is greater than a lateral width (minimum width) of the spacing between the pair of laterally spaced apart projections.

[0023] In some embodiments, the locking member and the pair of laterally spaced protrusions are configured such that at the beginning of insertion of the tang end into the attachment feature between the first and second engagement surfaces (initial insertion), the locking member is disposed between the pair of laterally spaced protrusions in its natural, undeformed state. In some such embodiments, the locking member and the pair of laterally spaced protrusions are configured such that axial movement of the tang end into the attachment feature between the first and second engagement surfaces from the beginning of insertion (initial insertion) to full axial insertion causes the locking member to be deformed laterally inwardly by the pair of laterally spaced protrusions into a deformed state. In some such embodiments, the fixing member and the pair of laterally spaced protrusions are configured such that axial movement of the tang end into the attachment mechanism between the first engagement surface and the second engagement surface from the start of insertion (initial insertion) to full axial insertion causes the fixing member to be deformed laterally inward by the pair of laterally spaced protrusions into a deformed state, and then when a tip end of the fixing member engages the pair of laterally spaced protrusions, the fixing member elastically deforms laterally outward.

[0024] In some embodiments, a minimum lateral width of the coupling slot is substantially the same as a maximum lateral width of the pair of axially spaced protrusions. In some embodiments, the second engagement surface is a flat surface. In some embodiments, the first engagement surface is a flat surface. In some embodiments, the adjustment mechanism is configured to selectively apply a compressive force to the tang end by the first engagement surface and the second engagement surface.

[0025] In some embodiments, the cutting tool is a cutting blade. In some embodiments, the cutting tool is a surgical cutting blade. In some embodiments, the cutting tool is a sagittal cutting blade (sagittal saw blade). In some embodiments, the cutting edge is configured to cut material by lateral reciprocating motion of the cutting tool.

[0026] In some embodiments, the cutting instrument comprises a powered end effector configured to move the cutting tool along a direction defined by the cutting edge, hi some embodiments, the cutting instrument comprises a robotic arm configured to effectuate or facilitate the movement of the cutting tool.

[0027] In another aspect, the present disclosure provides a cutting tool comprising a tang end, a tip, and a cutting edge at a free end of the tip, the cutting edge configured to engage a material and cut the material upon movement of the cutting tool, the cutting tool defining an axial length extending between the free end of the tang end and the cutting edge, the tang end of the cutting tool comprising an axially extending coupling slot and a pair of resiliently deformable fastening members disposed on sides of the tang end to extend laterally outward as they extend axially from the tang end towards the tip.

[0028] In some embodiments, the distal ends of each of the pair of fixation members define end faces that extend laterally inwardly toward one another, hi some such embodiments, the distal ends of the fixation members extend axially as they extend laterally inwardly.

[0029] In some embodiments, the cutting edge is configured to cut material by lateral reciprocating motion of the cutting tool. In some embodiments, the cutting tool is a cutting blade. In some embodiments, the cutting tool is a planar cutting blade. In some embodiments, the cutting tool is a surgical cutting blade. In some embodiments, the cutting tool is a sagittal cutting blade (sagittal saw blade).

[0030] In another aspect, the present disclosure provides a mounting mechanism for a cutting tool comprising a first clamping member having a first engagement surface for engaging a cutting tool, and a second clamping member having a second engagement surface for engaging the cutting tool, a pair of axially spaced projections extending from the second engagement surface, and a pair of laterally spaced projections extending from the second engagement surface. The mounting mechanism for a cutting tool further comprises an adjustment mechanism configured to selectively adjust a distance between the first engagement surface and the second engagement surface by relative movement between the first clamping member and the second clamping member. The mounting mechanism is configured to releasably and securely couple a tang portion of the cutting tool to the mounting mechanism.

[0031] In some embodiments, the second engagement surface (second cutting tool engagement surface) is a flat surface. In some such embodiments, the first engagement surface (first cutting tool engagement surface) is a flat surface.

[0032] In some embodiments, the adjustment mechanism is configured to selectively apply a compressive force to the tang portion by the first engagement surface and the second engagement surface.

[0033] In some embodiments, the attachment mechanism is coupled to a cutting device configured to perform or facilitate a cutting operation of the attachment mechanism. In some such embodiments, the cutting device comprises a powered end effector configured to move the attachment mechanism along a cutting direction. In some such embodiments, the cutting device further comprises a robotic arm configured to effectuate or facilitate movement of at least the end effector and the attachment mechanism in three dimensions.

[0034] It will be appreciated that any combination of the aforementioned aspects and the further concepts described in more detail below (unless such concepts are mutually inconsistent) is considered to be part of the subject matter of the present invention and achieves the advantages disclosed herein.

[0035] The above and other objects, features and advantages of the present disclosure will become apparent from the following detailed description of the various aspects of the present disclosure, taken in conjunction with the accompanying drawings. [Brief description of the drawings]

[0036] These and other features, aspects, and advantages of the present disclosure will become better understood from the following detailed description taken in conjunction with the accompanying drawings, in which, although not necessarily drawn to scale, like reference characters represent like aspects throughout the drawings, in which:

[0037] [Figure 1] 1 shows a top view of a conventional saw blade as an example. [Diagram 2] 1 illustrates, by way of example, a perspective view of a cutting instrument, a mounting mechanism for a cutting tool, and a cutting tool, in accordance with one or more aspects of the present disclosure. [Diagram 3] 3 illustrates a perspective view of an attachment mechanism for the cutting instrument and cutting tool of FIG. 2 in accordance with one or more embodiments of the present disclosure. [Figure 4] 3 shows, by way of example, a cross-sectional view of a cutting tool and a clamping member of the attachment mechanism for the cutting tool of FIG. 2 according to one embodiment of the present invention. [Diagram 5] 3 illustrates, by way of example, a top view of the cutting tool of FIG. 2 in accordance with one or more embodiments of the present disclosure. [Figure 6] 6 illustrates, by way of example, an enlarged top view of a tang portion of the cutting tool of FIG. 5 in accordance with one or more embodiments of the present disclosure. [Figure 7] FIG. 3 illustrates, by way of example, a perspective view of a clamping member with alignment and locking protrusions of the mounting mechanism for the cutting tool of FIG. 2 according to one or more aspects of the present disclosure. [Figure 8]8 illustrates a top view of the clamping member, alignment protrusion, and locking protrusion of FIG. 7 according to one or more embodiments of the present disclosure. [Figure 9] 3 illustrates, by way of example, how the cutting tool and the attachment mechanism for the cutting tool of FIG. 2 are releasably and securely coupled to one another, according to one or more aspects of the present disclosure. [Figure 10] 3 illustrates, by way of example, how the cutting tool and the attachment mechanism for the cutting tool of FIG. 2 are releasably and securely coupled to one another, according to one or more aspects of the present disclosure. [Figure 11] 3 illustrates, by way of example, how the cutting tool and the attachment mechanism for the cutting tool of FIG. 2 are releasably and securely coupled to one another, according to one or more aspects of the present disclosure. [Figure 12] 3 illustrates, by way of example, how the cutting tool and the attachment mechanism for the cutting tool of FIG. 2 are releasably and securely coupled to one another, according to one or more aspects of the present disclosure. [Figure 13] 3 illustrates, by way of example, how the cutting tool and the attachment mechanism for the cutting tool of FIG. 2 are releasably and securely coupled to one another, according to one or more aspects of the present disclosure. [Figure 14] 3 illustrates, by way of example, how the cutting tool and the attachment mechanism for the cutting tool of FIG. 2 are releasably and securely coupled to one another, according to one or more aspects of the present disclosure. [Figure 15] 3 illustrates, by way of example, how the cutting tool and the attachment mechanism for the cutting tool of FIG. 2 are releasably and securely coupled to one another, according to one or more aspects of the present disclosure. [Figure 16] 3 illustrates, by way of example, how the cutting tool and the attachment mechanism for the cutting tool of FIG. 2 are releasably and securely coupled to one another, according to one or more aspects of the present disclosure. [Figure 17] 3 illustrates, by way of example, how the cutting tool and the attachment mechanism for the cutting tool of FIG. 2 are releasably and securely coupled to one another, according to one or more aspects of the present disclosure. [Figure 18] 3 illustrates, by way of example, how the cutting tool and the attachment mechanism for the cutting tool of FIG. 2 are releasably and securely coupled to one another, according to one or more aspects of the present disclosure. [Figure 19] 3 illustrates, by way of example, how the cutting tool and the attachment mechanism for the cutting tool of FIG. 2 are releasably and securely coupled to one another, according to one or more aspects of the present disclosure. [Figure 20] 3 illustrates, by way of example, decoupling of the cutting tool of FIG. 2 and the attachment mechanism for the cutting tool, in accordance with one or more embodiments of the present invention. [Figure 21] 3 illustrates, by way of example, decoupling of the cutting tool of FIG. 2 and the attachment mechanism for the cutting tool, in accordance with one or more embodiments of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0038] Aspects of the present disclosure, as well as specific embodiments, features, advantages, and details thereof, are described in more detail below with reference to non-limiting examples shown in the accompanying drawings. Descriptions of well-known materials, manufacturing tools, processing techniques, and the like are omitted to avoid unnecessarily obscuring relevant details. However, it should be understood that the following detailed description and specific examples, while illustrating aspects of the present disclosure, are for illustrative purposes only and are not intended to be limiting. Various substitutions, modifications, additions, and / or edits within the spirit and / or scope of the basic inventive concept will be apparent to those skilled in the art from this disclosure.

[0039] Approximation terms used throughout this specification may be applied to modify quantitative expressions that may vary within acceptable limits without resulting in a change in the basic function to which they relate. Thus, values ​​modified by terms such as "about," "approximately," "substantially," and the like are not limited to the exact value specified. For example, these terms may refer to ±5% or less (e.g., ±2% or less, ±1% or less, ±0.5% or less, ±0.2% or less, ±0.1% or less, ±0.05% or less, etc.). In some cases, approximation terms may correspond to the precision of the instrument that measures the value. Any examples of operational or configuration parameters are not intended to exclude other parameters of the disclosed embodiments.

[0040] The terms used herein are for the purpose of describing particular examples only and are not intended to be limiting. As used herein, the singular terms "a," "an," "an," and "an" are intended to include the plural unless the context clearly dictates otherwise. Furthermore, reference to "one example" should not be interpreted as excluding the existence of another example that incorporates the described features. Furthermore, unless expressly stated to the contrary, terms such as "comprise," "have," "include," "include" (and any form of terms related thereto) are used as open-ended linking verbs. As a result, any embodiment that "comprises," "has," "includes," or "includes" one or more steps or elements includes such one or more steps or elements, but is not limited to only including such one or more steps or elements.

[0041] As used herein, terms such as "may," "could," "may," and "could" indicate the possibility of occurring within a set of circumstances and the possession of a particular property, characteristic, or function, and / or modify a verb by expressing one or more capabilities, capabilities, or possibilities associated with the verb. Thus, the use of terms such as "may," "may," "could," and "could" indicates that the modified term is clearly appropriate, applicable, or compatible with the indicated capability, function, or usage, but takes into account that in some circumstances the modified term may not be appropriate, applicable, or compatible. For example, in some circumstances an event or capability may be expected, but in other circumstances the event or capability may not occur. This distinction is expressed by terms such as "may," "may," "could," and "could."

[0042] As used herein, the term "coupled" and similar terms are used to refer to both direct and indirect connections. As used herein, unless otherwise specified, the term "entirely" means at least a substantial portion (e.g., at least 95%, or at least 99%). Thus, as used herein, the term "entirely" is not limited to 100% unless otherwise specified.

[0043] Components, aspects, features, configurations, arrangements, uses, etc. that are described, illustrated, or otherwise disclosed in this specification with respect to a particular embodiment may be applied to other embodiments disclosed herein as well.

[0044] As shown in Figure 2, a cutting tool 10, a cutting device 14, a cutting tool mounting mechanism 12, and related tool mounting systems and methods are disclosed. The cutting tool mounting mechanism 12 and the cutting tool 10 cooperate to allow a user to quickly and reliably attach and detach the cutting tool 10 to a cutting device 14 (either part of or coupled to one or more cutting devices 14) using only one hand. Furthermore, the cutting tool mounting mechanism 12 and the cutting tool 10 prevent the cutting tool 10 from backing out of position after the cutting tool 10 is initially inserted and coupled into the cutting tool mounting mechanism 12 before the cutting tool 10 is fully secured to the cutting tool mounting mechanism 12 (by adjustment of the cutting tool mounting mechanism 12). The cutting tool 10 and the mounting mechanism 12 for the cutting tool are configured to provide ease of placement, accuracy of placement, reduced risk of improper placement, and ease of removal of the cutting tool 10 from the mounting mechanism 12 for the cutting tool (and the cutting equipment 14).

[0045] As shown in Figures 2, 3 and 5, the cutting tool 10 may be formed (configured) as a saw blade (e.g., a sagittal saw blade) configured to cut bone, cartilage and / or other tissue of a patient (e.g., a mammalian patient). For example, as shown in Figure 5, the cutting tool 10 may be a flat saw blade extending longitudinally along an axis XX. The cutting tool 10 comprises a tang portion (tang end) (core portion) 20 at one end, a tip portion 22 having a cutting edge, and a shaft portion (middle portion) 21 extending between the tang portion 20 and the tip portion 22. The cutting edge of the tip portion 22 has a plurality of cutting teeth (and / or abrasives) arranged transversely (extending transversely to the axis XX) along the plane of the saw blade (e.g., linearly or along an arc having a radius coinciding with the axis XX). The plurality of cutting teeth defines a free end (i.e., axial extent) of the cutting tool 10 at the tip portion 22.

[0046] The cutting tool 10 is configured such that the cutting teeth on the tip 22 perform the cut as the saw blade moves oscillatingly forward and backward in an aligned plane. As a result, when the cutting tool 10 is actuated by the cutting instrument 14, the teeth of the saw blade move forward and backward against the material (e.g., tissue or bone) to be cut. As a result of this movement and the forward pressure applied (directly or indirectly) by the cutting instrument 14, the teeth of the saw blade cut and separate the material to be cut.

[0047] It is expressly disclosed that instead of being configured as a sagittal saw blade, the cutting tool 10 may be configured as a different type of saw blade. For example, the cutting tool 10 may be configured as a reciprocating saw blade with a plurality of cutting teeth (and / or abrasives) disposed along an axially extending side of the saw blade. As another example, the cutting tool 10 may be configured as any other blade-type cutting tool that uses a tang portion (attachment portion) 20 to couple to the attachment mechanism 12 of the cutting device 14. Furthermore, the cutting tool 10 may be configured as a non-blade-type cutting tool (e.g., a rotary bit) that uses a tang portion (attachment portion) 20 to couple to the attachment mechanism 12 of the cutting device 14.

[0048] The cutting instrument 14 may be configured as any instrument that provides motion to the cutting tool 10 via the attachment mechanism 12. In some embodiments, the cutting instrument 14 may be a powered (e.g., motorized) cutting instrument that includes a motor (e.g., electric motor) or other power mechanism that provides motion to the cutting tool 10 (e.g., selectively) along the cutting edge of the cutting tool 10. For example, as shown in FIG. 2, the cutting instrument 14 may be configured for use with a cutting tool 10 configured as a sagittal saw blade, and the cutting instrument 14 may have an end effector 16 configured to move in an oscillating forward and backward pattern in a plane in which the saw blade is aligned. However, the end effector 16 may be configured to drive or move the cutting tool 10 in any other direction (pattern) in which the cutting edge is configured to cut.

[0049] In some embodiments, the end effector 16 may include a motor control circuit (motor control and complementary control circuit) that controls the operation of the motor, and a drive system that transfers power generated by the motor to the cutting tool 10 (via the mounting mechanism 12). More specifically, the drive system may be configured to convert and transfer rotational motion generated by the motor to the cutting tool 10 such that the cutting tool 10 moves along the direction of its cutting edge.

[0050] In some embodiments, the cutting device 14 may be configured as a handheld device that is manually operated by a user. In other embodiments, as shown in FIG. 2, the cutting device 14 may be configured as a robotic device. For example, the cutting device 14 may include an articulated robotic arm 18 that may be coupled to or include a drive mechanism (end effector 16) and an attachment mechanism 12. In some such embodiments, the robotic cutting device 14 may be configured with a manually guided robotic arm 18 that moves the cutting tool 10 along a cutting path via the end effector 16, but the moving (e.g., reciprocating) cutting tool 10 must be manually guided by a user to and / or through the material to be cut. In other embodiments, the robotic cutting device 14 may be configured with an automated robotic arm 18 that moves the cutting tool 10 along the cutting path via the end effector 16, but the moving (e.g., reciprocating) cutting tool 10 must be manually guided by a user to and / or through the material to be cut.

[0051] As shown in FIGS. 2-4 and 16-19, in some embodiments, the attachment mechanism (connector) 12 for a cutting tool may comprise a clamping mechanism having first and second clamping members (engagement members) 30A, 30B and an adjustment member 36. The adjustment member 36 is configured to selectively adjust the relative position or spacing between the engagement surfaces 31A, 31B of the first and second clamping members (engagement members) 30A, 30B, respectively. In some embodiments, the adjustment member 36 may comprise a manual knob. The manual knob is configured to adjust the threaded connection between the first and second clamping members (engagement members) 30A, 30B to adjust the relative position of the first and second clamping members (engagement members) 30A, 30B and thus the spacing between the engagement surfaces 31A, 31B. However, in this case, it is contemplated that the clamping mechanism and the adjustment member 36 may form any arrangement or configuration that allows the spacing between the engagement surfaces 31A, 31B to be selectively adjusted. For example, the clamping mechanism may comprise a cam mechanism, a gear mechanism, a linear actuator, or any other configuration, mechanism, or arrangement.

[0052] As described further below, the clamping mechanism of the attachment mechanism 12 for the cutting tool may be configured to engage a surface or side (e.g., opposing surfaces) of the cutting tool 10 and apply a compressive force to the engagement surface, as shown in Figures 2-4 and 19. The adjustment member 36 may be utilized to actuate the clamping mechanism by a user (e.g., manually). In this case, the clamping members 30A, 30B may be "opened" by increasing the distance between the engagement surfaces 31A, 31B, and the clamping members 30A, 30B may be "closed" by minimizing the distance between the engagement surfaces 31A, 31B. In some embodiments, the clamping mechanism may be configured to adjust the distance between the engagement surfaces 31A, 31B, for example, along a direction extending perpendicular to the plane of the cutting tool 10.

[0053] As shown in FIG. 4, the engagement surfaces 31A, 31B of the clamp members 30A, 30B may be configured to physically engage or abut the surface of the cutting tool 10. In some embodiments, the first engagement surface 31A and the second engagement surface 31B may be flat surfaces. As shown in FIG. 7 and FIG. 8, the second engagement surface 31B of the second clamp member 30B may be provided with a plurality (e.g., a pair) of alignment and fixing protrusions 32 spaced apart from each other in the axial direction and a plurality (e.g., a pair) of retention protrusions (retraction prevention protrusions) 34 spaced apart from each other in the lateral direction, extending from the second engagement surface 31B.

[0054] In the exemplary embodiment shown in Figs. 7 to 15, the above-mentioned protrusions 32, 34 are formed as cylindrical pin members extending perpendicularly from the second engagement surface 31B. However, the protrusions 32, 34 do not have to be cylindrical or extend perpendicularly from the engagement surface 31B. It should be noted that the protrusions 32, 34 may be integral with the second clamp member 30B or may be separate components coupled to the second clamp member 30B. Furthermore, the protrusions 32, 34 may or may not have the same size (e.g., the same height (thickness), the same diameter).

[0055] As shown in Figures 7 and 8, the axially spaced alignment and fixing protrusions 32 may include at least a first protrusion disposed adjacent to the front end (front surface) of the second engagement surface 31B and a second protrusion disposed adjacent to the rear end (rear surface) of the second engagement surface 31B. That is, the first alignment and fixing protrusion 32 and the second alignment and fixing protrusion 32 may be provided spaced apart from each other in the axial direction. As shown in Figure 8, the axial end of the laterally spaced retaining protrusion (retraction prevention protrusion) 34 and the front alignment and fixing protrusion 32 define a maximum second axial length L2.

[0056] As shown in Figures 7 and 8, the laterally spaced retaining projections (retraction prevention projections) 34 may include at least a first projection 34 disposed adjacent to a first lateral end (first side surface) of the second engagement surface 31B and a second projection disposed adjacent to a second lateral end (second side surface) of the second engagement surface 31B. That is, as shown in Figure 8, the first retaining projection 34 and the second retaining projection 34 may be laterally spaced apart from each other by a second lateral width W2. In some embodiments, the alignment and fixing projection 32 may be disposed in the middle of the second engagement surface 31B, or may be disposed between the laterally spaced retaining projections 34.

[0057] The first engagement surface 31A of the first clamping member 30A may or may not be provided with axially spaced apart alignment and locking projections 32 and / or laterally spaced apart anti-removal projections 34. For example, in the exemplary embodiments shown in Figures 2-4 and 16-20, the first engagement surface 31A is devoid of projections 32 and 34. In some such embodiments, the first engagement surface 31A may have cavities (e.g., recesses or openings) corresponding in location and size to the projections 32 and 34. This allows the protrusions 32 and 34 of the second engagement surface 31B to extend or fit into the cavities of the first engagement surface 31A (e.g., when no cutting tool is disposed between the first and second clamping members 30A, 30B and the first and second clamping members 30A, 30B are closed, or when the protrusions 32 and 34 are thick relative to the thickness of the cutting tool 10 secured between the first and second engagement surfaces 31A, 31B). In other embodiments, the first engagement surface 31A is flat, and the protrusions 32 and 34 of the second engagement surface 31B may engage the first engagement surface 31A or may be spaced apart from the first engagement surface 31A when the first and second clamping members 30A, 30B are in the closed configuration. In embodiments in which protrusions and / or protrusions 34 extend from the first and second engagement surfaces 31A, 31B of the first and second clamping members 30A, 30B, the protrusions 32 and protrusions 34 may be arranged to correspond to one another and the height (thickness) of the protrusions 32 and protrusions 34 may be configured so as not to prevent the first and second engagement surfaces 31A, 31B from engaging the cutting tool 10 when the cutting tool 10 is positioned between the first and second engagement surfaces 31A, 31B and the first and second clamping members 30A, 30B are in a closed configuration.

[0058] 5 and 6, the tongue portion 20 of the cutting tool 10 is configured to cooperate with the alignment and fixing protrusions (axially spaced apart from each other) 32 and the retention protrusions (laterally spaced apart from each other) 34 extending from the tongue portion 20. This will be described further below. Specifically, the tongue portion 20 includes at least one elastically deformable fixing member (finger portion) 24 on a side surface of the tongue portion 20 and a coupling slot 25 extending from a free axial end (free end surface) (e.g., space) of the tongue portion 20 of the cutting tool 10. As shown in FIG. 5 and FIG. 6, in some embodiments, the tongue portion 20 has a pair of elastically deformable fixing members 24 on both side surfaces of the tongue portion 20.

[0059] As shown in Figures 5 and 6, at least one elastically deformable fixing member 24 extends axially toward the front end of the first engagement surface 31A (i.e., the front ends of the first and second clamp members 30A, 30B) and laterally outward. As also shown in Figures 5 and 6, a space 25 is formed along the lateral direction between the middle portion (in the width direction) of the tongue portion 20 and the inner side surface of each fixing member 24. This allows the fixing member 24 to be elastically deformed inwardly along the lateral direction (width direction) of the tongue portion 20 to at least some extent, as shown in Figure 6.

[0060] As also shown in Figures 5 and 6, the coupling slot 25 forms an inner central cavity 23 in the tang portion 20. The inner central cavity 23 may be open at an axial end of the tang portion 20. Also as shown in Figure 5, the pair of lateral deformable fastening members 24 define (have) a maximum first lateral width W1 in a natural (neutral, i.e., undeformed) state. The coupling slot 25 may extend axially into the cutting tool 10 such that the axial ends of the deformable fastening members 24 and the axial ends of the coupling slot 25 define a maximum first axial length L1. The maximum first lateral width W1 of the pair of lateral deformable fastening members 24 is greater than the second lateral width W2 of the first and second retaining projections 34, 34 laterally spaced apart from each other.

[0061] As will be further described below with respect to Figures 9-19, the coupling slot 25 is configured to accommodate the axially spaced apart alignment and locking projections 32 such that the projections 32 are disposed within the cavities 23 of the coupling slot 25 when the first and second clamping members 30A, 30B engage and couple with the tangs 20 of the cutting tool 10. In some embodiments, the maximum lateral width or diameter of the projections 32 may correspond (match) with the minimum lateral width of the coupling slot 25. In this manner, when the axially spaced apart alignment and locking projections 32 are disposed within the coupling slot 25, the cutting tool 10 is prevented from moving laterally relative to the second engagement surface 31B of the second clamping member 30B (and thus the first clamping member 30A) and from rotating (in all directions) along the plane of the saw blade. Furthermore, the front projection 32 is configured such that when the front projection 32 engages the axial end of the coupling slot 25, the fixing member 24 engages with the projection 34 to prevent the cutting tool 10 from axially dislodging from the front of the second clamping member 30B. In this manner, the front projection 32 and the coupling slot 25 cooperate, and the fixing member 24 and the projection 34 cooperate, to prevent the cutting tool 10 from moving axially relative to the second clamping member 30B (and thus the first clamping member 30A) when the front projection 32 engages the axial end of the coupling slot 25.

[0062] Next, an exemplary process for securely and reliably detachably coupling the cutting tool 10 and the attachment mechanism 12 via the tongue portion 20 and the first and second clamp members 30A, 30B will be described with reference to Figures 9 to 21. Note that for convenience of explanation, the first clamp member 30A is not shown in Figures 9 to 15.

[0063] As shown in FIG. 9, in order to utilize the attachment mechanism 12 to securely and removably couple the cutting tool 10 to the cutting equipment 14, the tongue portion 20 of the cutting tool 10 may first be inserted between the first and second engagement surfaces 31A, 31B of the first and second clamping members 30A, 30B, with the coupling slot 25 substantially aligned with the front protrusion 32. Note that the distance between the first and second engagement surfaces 31A, 31B may be adjusted, for example, by the adjustment member 36, to be slightly larger than the thickness of the cutting tool 10. This allows the tongue portion 20 to be inserted between the first and second engagement surfaces 31A, 31B, and prevents the tongue portion 20 from moving beyond the protrusion 32 (and protrusion 34) along the thickness direction (e.g., between the protrusion 32 and the first engagement surface 31A).

[0064] As shown in Figures 10, 16 and 17, the tang 20 may be moved along the second engagement surface 31B or axially inserted into the attachment mechanism 12 between the first and second engagement surfaces 31A, 31B, causing the coupling slot 25 to move over the forward projection 32 such that the forward projection 32 is located within the cavity 23. Note that the axial ends of the coupling slot 25 may be relatively wide and inwardly tapered as they extend axially therefrom, to facilitate positioning and / or guiding the coupling slot 25 over or around the forward projection 32, as shown in Figure 10. The axial ends of the tang 20 may be dimensioned laterally or widthwise such that the laterally spaced retaining projections 34 do not engage the tang 20 when initially inserted and during the limited duration of axial movement of the cutting tool 10. However, as shown in FIG. 11, with the front projection positioned in the coupling slot 25, the cutting tool 10 is further inserted axially into the attachment mechanism 12 between the first and second engagement surfaces 31A, 31B until the laterally outer surfaces of the fastening member 24 engage the laterally spaced apart anti-slip projections 34.

[0065] 12 and 13, once the cutting tool 10 is positioned within the attachment mechanism 12 such that the fastener 24 engages the protrusions 34, the cutting tool 10 can be moved axially further into the attachment mechanism 12 such that the protrusions 34 elastically deform the fastener 24 inward (i.e., inward along the width or lateral direction) toward the intermediate width of the tang 20 (and the forward protrusions 32 are axially disposed deeper within the coupling slot 25). As shown in FIGS. 14 and 15, the cutting tool 10 can be moved axially further into the attachment mechanism 12 such that the distal end 26 of the fastener 24 reaches the laterally spaced retaining protrusions 34, the rear protrusions 32 are disposed within the coupling slot 25, and the forward protrusions 32 engage the axial ends of the coupling slots 25.

[0066] As shown in FIGS. 6, 14, and 15, the tip 26 of the fixing member 24 may be inclined laterally inward (i.e., inward in the width direction) as it extends axially. Specifically, the axial end face of the tip 26 of the fixing member 24 may be inclined laterally inward (i.e., inward in the width direction) as it extends axially. In this way, when the tip 26 of the fixing member 24 reaches the protrusion 34 and is further moved axially, the tip 26 may elastically deform the fixing member 24 laterally outward toward a neutral state (neutral position) and transition to a locked state (locked position). Such elastic movement of the fixing member 24 and / or the engagement of the tip 26 with the protrusion 34 may provide an audible and / or tactile indication or feedback. This indicates to the user that the cutting tool 10 has been properly and completely inserted into the attachment mechanism 12.

[0067] Further, a first axial length L1 between the tip 26 of the deformable locking member 24 and the axial end of the coupling slot 25 and a second axial length L2 between the axial end of the laterally spaced apart retaining projection 34 and the front projection 32 are sized relatively to one another such that the projection 34 is engaged with the tip 26 (or axially disposed through at least a portion of the locking member 24) when the front projection 32 engages the axial end of the coupling slot 25. Because the tip 26 extends laterally inward (i.e., toward the middle of the width of the tang 20), when the front projection 32 engages the axial end of the coupling slot 25, the projection 34 is axially disposed through at least a portion of the locking member 24, thereby preventing the cutting tool 10 from moving axially forward and backward from the attachment mechanism 12 (i.e., axially secured).

[0068] The securing member 24 is elastically deformed or pressed into a deformed state when the cutting tool 10 is initially inserted into the cutting tool attachment mechanism 12, and elastically deforms from the deformed state to a locked state when the cutting tool 10 is fully inserted into the cutting tool attachment mechanism 12. In the locked state of the securing member 24, the cutting tool 10 is securely, firmly and releasably coupled to the cutting tool attachment mechanism 12 (and thus the cutting equipment 14) such that the securing member 24 provides a locking force that prevents the cutting tool 10 from retracting (falling off) from the attachment mechanism 12. Furthermore, as shown in FIG. 17, in the locked state, the securing member 24 prevents the cutting tool 10 from retracting (falling off) prior to adjustment of the attachment mechanism 12 (e.g., via the adjustment member 36) such that the first and second engagement surfaces 31A, 31B engage (and apply a compressive force to) the tang portion 20.

[0069] As shown in Figures 18 and 19, after the cutting tool 10 is fully inserted into the attachment mechanism 12, the attachment mechanism 12 may be adjusted (e.g., via the adjustment member 36) so that the first and second engagement surfaces 31A, 31B engage the tang portion 20 (and apply a compressive force) so that the cutting tool 10 is securely and releasably coupled to the attachment mechanism 12 for the cutting tool (and thus the cutting equipment 14) via the fixing member 24 and the anti-slip protrusions 34 spaced laterally from each other, and the coupling slots 25 and the alignment and fixing protrusions 32 spaced axially from each other, thereby allowing the attachment mechanism 12 to securely and releasably lock the cutting tool 10 and the attachment mechanism 12 to each other.

[0070] After the cutting tool 10 has been used to cut material (e.g., bone or other tissue), the attachment mechanism 12 may be adjusted (e.g., via adjustment member 36) such that the first and second engagement surfaces 31A, 31B are disengaged from the tang 20, which may create a space between at least one previous engagement surface of the cutting tool 10 and the first and / or second engagement surfaces 31A, 31B, as shown in FIG. 20. The cutting tool 10 may then be removed from the attachment mechanism 12 (between the first and second clamping members 30A, 30B) by moving the cutting tool 10 along its thickness such that the tang 20 is moved along and past the protrusions 32, 34, as shown in FIGS. 20 and 21.

[0071] It should be understood that the above description is illustrative only and is not intended to be limiting. For example, the above-described embodiments (and / or aspects thereof) may be used in combination with each other. Moreover, many modifications may be made to adapt a particular situation or material to the teachings of the various embodiments without departing from the scope of the appended claims. Although dimensions and types of materials are described herein, these are intended to define certain parameters of the various embodiments and are merely illustrative rather than limiting of all embodiments. Many other examples will be apparent to those skilled in the art in light of the above description. The scope of the various embodiments should therefore be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

[0072] In the appended claims, the terms "comprise", "have", and "include" are used as synonyms of their corresponding plain language terms. Moreover, in the claims, terms such as "first", "second", "third", etc. are used merely as reference labels and are not intended to impose numerical, structural, or other requirements on their subject matter. The form of the term "based on" in this specification includes relationships in which an element is based in part and relationships in which an element is based in whole. The form of the term "defined" includes relationships in which an element is defined in part and relationships in which an element is defined in whole. Moreover, the limitations of the following claims are not written in means-plus-function form and are not intended to be interpreted under 35 U.S.C. 112, paragraph 6, unless such claim limitations expressly use the phrase "means" followed by a description of a functional cavity of further structure. It is to be understood that not all of the above objects or advantages may necessarily be achieved by any particular embodiment. Thus, for example, those skilled in the art will recognize that the devices, systems, and methods described herein may be embodied or performed in a manner that achieves or optimizes one or more advantages described herein, without necessarily achieving other objectives or advantages described or implied herein.

[0073] Although the present invention has been described in detail with respect to only a limited number of examples, it should be readily understood that the present invention is not limited to such disclosed examples. Rather, the present disclosure may be modified to incorporate any number of variations, modifications, substitutions, or equivalent arrangements not described above that are commensurate with the spirit and scope of the present disclosure. Furthermore, while various examples have been described, it should be understood that aspects of the disclosure may include only one or several of the described examples. Also, although some disclosures are described as having a specific number of elements, it will be understood that embodiments may be practiced with fewer or more than the specific number of elements.

[0074] It should be understood that any combination of the foregoing concepts, and further concepts described in more detail below, is contemplated as part of the inventive subject matter disclosed herein (to the extent such concepts are not mutually inconsistent), and in particular, any combination of the subject matter of the claims appearing at the end of this disclosure is contemplated as part of the inventive subject matter disclosed herein.

Claims

1. a cutting tool having a tang end, a tip end, and a cutting edge at the tip end, the cutting edge being configured to cut a material upon movement of the cutting tool with the cutting edge engaging the material, the cutting tool having an axial length extending between the tang end and the cutting edge; a cutting instrument having an attachment mechanism configured to releasably and securely couple the cutting tool and the cutting instrument, the attachment mechanism configured to effect or facilitate the movement of the cutting tool; The attachment mechanism includes: a first clamp member having a first engagement surface; a second clamping member having a second engagement surface, a pair of axially spaced projections extending from said second engagement surface, and a pair of laterally spaced projections extending from said second engagement surface; an adjustment mechanism configured to selectively adjust a distance between the first and second engagement surfaces by relative movement between the first and second clamping members; the tang end of the cutting tool includes an axially extending coupling slot and a pair of resiliently deformable fastening members disposed on sides of the tang end so as to extend laterally outward as they extend axially from the tang end toward the tip; the tang end of the cutting tool and the attachment mechanism are adapted to cooperate such that, when the tang end is fully axially inserted into the attachment mechanism between the first engagement surface and the second engagement surface, the pair of axially spaced projections are disposed within the coupling slot and the pair of laterally spaced projections are disposed axially past at least a portion of the stationary member. system.

2. the cutting tool and the attachment mechanism are configured such that when the tang end is fully axially inserted into the attachment mechanism, one of the pair of axially spaced projections abuts an axial end of the coupling slot. The system of claim 1 .

3. the cutting tool and the attachment mechanism are configured such that, upon full axial insertion of the tang end into the attachment mechanism, the pair of laterally spaced apart projections are disposed axially past a distal end of the stationary member defining a free end of the stationary member. The system of claim 1 .

4. The distal end of the fixation member defines a laterally inwardly extending end surface. The system of claim 3.

5. the end surface of the tip of the fixation member extends further axially as the end surface extends laterally inward; The system of claim 4.

6. the pair of laterally spaced projections are configured to engage the end surface of the tip of the fastener when the tang end is fully axially inserted into the attachment mechanism. The system of claim 4.

7. the cutting tool and the attachment mechanism are configured such that the fixation member is in a deformed state when the tang end is fully axially inserted into the attachment mechanism. The system of claim 6.

8. the pair of resiliently deformable fastening members define a lateral width in a natural state of the fastening members that is greater than a lateral width of the spacing between the pair of laterally spaced apart projections; The system of claim 1 .

9. the fixing member and the pair of laterally spaced apart protrusions are configured such that, at a time when insertion of the tang end into the attachment mechanism between the first engagement surface and the second engagement surface begins, the fixing member is disposed between the pair of laterally spaced apart protrusions in an undeformed natural state. The system of claim 1 .

10. the locking member and the pair of laterally spaced protrusions are configured such that axial movement of the tang end into the attachment mechanism between the first and second engagement surfaces from the start of insertion to full axial insertion causes the locking member to be deformed laterally inwardly by the pair of laterally spaced protrusions into a deformed state. The system of claim 9.

11. the fixing member and the pair of laterally spaced protrusions are configured such that axial movement of the tang end into the attachment mechanism between the first engagement surface and the second engagement surface from the start of the insertion until complete axial insertion causes the fixing member to be deformed laterally inwardly by the pair of laterally spaced protrusions into a deformed state, and then when a tip end of the fixing member engages the pair of laterally spaced protrusions, the fixing member elastically deforms laterally outwardly. The system of claim 10.

12. a minimum lateral width of the coupling slot is approximately the same as a maximum lateral width of the pair of axially spaced projections; The system of claim 1 .

13. the second engagement surface being a flat surface; The system of claim 1 .

14. the first engagement surface is a flat surface; The system of claim 1 .

15. the adjustment mechanism is configured to selectively apply a compressive force to the tang end by the first engagement surface and the second engagement surface. The system of claim 1 .

16. the cutting tool is a cutting blade; The system of claim 1 .

17. the cutting tool being a surgical cutting blade; 17. The system of claim 16.

18. the cutting tool is a sagittal cutting blade; 17. The system of claim 16.

19. the cutting edge is configured to cut material by lateral reciprocating motion of the cutting tool; 17. The system of claim 16.

20. the cutting instrument comprising a powered end effector configured to move the cutting tool along a direction defined by the cutting edge; The system of claim 1 .

21. the cutting device comprises a robotic arm configured to effectuate or facilitate movement of the cutting tool; The system of claim 1 .

22. 1. A cutting tool comprising a tang end, a tip end, and a cutting edge at a free end of the tip end, the cutting edge is configured to cut the material upon movement of the cutting tool with the cutting edge engaged with the material; the cutting tool has an axial length extending between a free end of the tang end and the cutting edge; the tang end of the cutting tool includes an axially extending coupling slot and a pair of resiliently deformable fastening members provided on sides of the tang end so as to extend laterally outward as they extend axially from the tang end toward the tip; Cutting tool.

23. The distal ends of each of the pair of fixing members have end faces extending laterally inwardly toward each other.

23. A cutting tool according to claim 22.

24. The distal end of the fixation member extends axially as it extends laterally inward.

24. A cutting tool according to claim 23.

25. the cutting edge is configured to cut material by lateral reciprocating motion of the cutting tool; 23. A cutting tool according to claim 22.

26. the cutting tool is a cutting blade; 23. A cutting tool according to claim 22.

27. The cutting tool is a planar cutting blade.

23. A cutting tool according to claim 22.

28. the cutting tool being a surgical cutting blade; 23. A cutting tool according to claim 22.

29. the cutting tool is a sagittal cutting blade; 23. A cutting tool according to claim 22.

30. 1. An attachment mechanism for a cutting tool, comprising: a first clamping member having a first engagement surface for engaging a cutting tool; a second clamping member having a second engagement surface for engaging the cutting tool, a pair of axially spaced projections extending from the second engagement surface, and a pair of laterally spaced projections extending from the second engagement surface; an adjustment mechanism configured to selectively adjust a distance between the first and second engagement surfaces by relative movement between the first and second clamping members; the attachment mechanism is configured to releasably and securely couple the tang of the cutting tool and the attachment mechanism to one another; Mounting mechanism for cutting tools.

31. the second engagement surface being a flat surface; 31. An attachment mechanism for a cutting tool according to claim 30.

32. the first engagement surface is a flat surface; 32. An attachment mechanism for a cutting tool according to claim 31.

33. The adjustment mechanism is configured to selectively apply a compressive force to the tongue portion by the first engagement surface and the second engagement surface.

31. An attachment mechanism for a cutting tool according to claim 30.

34. the attachment mechanism is coupled to a cutting device configured to perform or facilitate a cutting operation of the attachment mechanism; 31. An attachment mechanism for a cutting tool according to claim 30.

35. the cutting instrument comprises a powered end effector configured to move the attachment mechanism along a cutting direction; 35. An attachment mechanism for a cutting tool according to claim 34.

36. the cutting instrument further comprising a robotic arm configured to achieve or facilitate three-dimensional movement of at least the end effector and the attachment mechanism; 36. An attachment mechanism for a cutting tool according to claim 35.

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