Electric surgical tool with oscillating saw blade

Abstract

In general, devices, systems, and methods for assembling and operating a handheld oscillating surgical saw (100) are provided. In an exemplary embodiment, a surgical tool includes a handpiece including a coupling head (106) including a slot configured to releasably receive a surgical saw blade (108) configured to cut bone, and a magnet (in a magnet housing 204) configured to magnetically attract the saw blade (108), wherein the coupling head (106) is configured to move between a first position, in which the slot has a first height and the coupling head is configured to selectively receive and release the surgical saw blade (108) therein, and a second position, in which the coupling head (106) has a second height and is configured to selectively receive and release the surgical saw blade (108) therefrom. The slot has a second height less than the first height and a coupling head (106) is configured to fixedly seat a saw blade (108) therein.

Description

Technical Field

[0001] This disclosure relates in its entirety to electrically powered surgical tools with oscillating saw blades. Background Technology

[0002] In orthopedics, surgical saws are commonly used to cut bone in joint replacement procedures such as hip and knee replacements. Electric oscillating saws offer greater precision and efficiency than traditional manual bone saws. The saw blade is typically operatively coupled to a power source to enable its electric oscillation, which provides the ability to cut bone. The handpiece of an electric surgical saw is usually compatible with a variety of different attached blades, each offering a different geometry suitable for various surgical applications. However, changing blades safely can be challenging for physicians or other medical professionals. Ensuring the blade is properly secured in the surgical instrument is crucial for ensuring accurate cuts by the instrument during surgical procedures.

[0003] Therefore, there is still a need for improved electric surgical tools with oscillating saw blades. Summary of the Invention

[0004] Generally speaking, devices, systems, and methods for use with electrically powered surgical tools having oscillating saw blades are provided.

[0005] In one aspect, a surgical tool is provided, in one embodiment of which the surgical tool includes a handpiece including a connector including a slot and at least one magnet, the slot being configured to releasably receive a surgical saw blade configured to cut bone, and the at least one magnet being configured to magnetically attract the saw blade, wherein the connector is configured to move between a first position and a second position, in which the slot has a first height and the connector is configured to selectively receive and release the surgical saw blade from the slot, and in the second position, the slot has a second height less than the first height and the connector is configured to securely position the saw blade in the slot.

[0006] The surgical device can have any number of variations. For example, the connector may include a movable cap configured to be in an upward position when the connector is in a first position and in a downward position when the connector is in a second position. Furthermore, the tool may include an actuator configured to be actuated to selectively move the cap between the upward and downward positions. The cap of the tool may include at least one protrusion extending from the cap, the at least one protrusion being configured to engage at least one corresponding concave member formed in the saw blade when the connector is in the second position.

[0007] In another example, the tool may include an actuator configured to be actuated to selectively move the coupling head between a first position and a second position.

[0008] In yet another example, the slot may be defined by a bottom surface, a top surface, a left side wall, a right side wall, and a distal surface, at least one magnet may be positioned on the distal surface, and the saw blade may be configured to extend distally out of the slot. Furthermore, the top surface may be defined by a cap configured to be movable relative to the distal surface to allow the coupling head to move between a first position and a second position.

[0009] In another example, the coupling head moving from a first position to a second position can be configured to provide feedback to the user indicating that the saw blade is securely positioned within the coupling head, the feedback including at least one of visual, auditory, and tactile feedback. Furthermore, when the feedback includes at least visual feedback, the tool may also include a saw blade, and the saw blade may include an alignment feature configured to align with the coupling head when the coupling head is in the second position. Furthermore, when the feedback includes at least auditory feedback, the tool may include a saw blade, and the magnetic engagement between the saw blade and at least one magnet may be configured to provide auditory feedback. Furthermore, when the feedback includes at least tactile feedback, the tool may include a saw blade, and the interaction between the magnetic field generated by at least one magnet and the saw blade may be configured to provide tactile feedback.

[0010] In yet another example, the tool may include a saw blade, and at least one magnet may include a first magnet and a second magnet. The saw blade may include a U-shaped proximal portion, which includes a first arm and a second arm, and when the coupling head is in a second position, the first arm may be positioned adjacent to the first magnet, and the second arm may be positioned adjacent to the second magnet.

[0011] In another aspect, a surgical method is provided, which may include: inserting a surgical saw blade into a slot formed between the base and a cap of a connector of a surgical tool; sliding the saw blade proximally into the slot until the saw blade contacts the distal wall of the base and engages at least one magnet at the distal wall; and closing the cap of the connector to secure the saw blade to the connector.

[0012] This method can be varied in several ways. For example, a saw blade coupled with at least one magnet can provide the user with at least one of visual, auditory, and tactile feedback.

[0013] In another example, the capping of the closure joint may include clamping the cap onto the saw blade.

[0014] In yet another example, closing the cap may include an actuator that actuates a surgical tool, causing the cap to move relative to the base.

[0015] In another example, closing the cap may include engaging at least one protruding member extending from the cap with at least one corresponding recessed member formed in the saw blade. Furthermore, the method may include, after closing the cap, re-acting the actuator to move the cap relative to the base and subsequently removing the saw blade from the slot. In some cases, the saw blade cannot be removed from the slot until the actuator is re-acted.

[0016] In yet another example, the method may include swinging the saw blade relative to the bone while the saw blade is fixed to the coupling head. Attached Figure Description

[0017] The present invention is described with reference to the following figures:

[0018] Figure 1 This is a perspective view of a handheld oscillating saw tool;

[0019] Figure 2 yes Figure 1 A perspective view of the saw head and saw blade of a handheld oscillating saw tool;

[0020] Figure 3 yes Figure 1 A perspective view of the saw head and saw blade of a handheld oscillating saw tool, with the cap of the saw head connector removed;

[0021] Figure 4 yes Figure 1 Another perspective view of the saw head and saw blade of a handheld oscillating saw tool, in which the cap of the saw head connector has been removed;

[0022] Figure 5 yes Figure 1 A cross-sectional view of the connector of a handheld oscillating saw tool;

[0023] Figure 6 yes Figure 1 A perspective view of the cap of the connector of a handheld oscillating saw tool;

[0024] Figure 7 This is a top view of the connection portion of the saw blade implementation scheme;

[0025] Figure 8 It is during the first step of assembly. Figure 1 A perspective view of the saw blade and saw head of a handheld oscillating saw tool, with the connector open and the saw blade not attached;

[0026] Figure 9 It is during the second step of assembly. Figure 1 A perspective view of the saw head of a handheld oscillating saw tool, with the connector open and the saw blade inside the connector;

[0027] Figure 10It is during the second step of assembly. Figure 1 A cross-sectional view of the connector of a handheld oscillating saw tool;

[0028] Figure 11 Is Figure 9 During the second phase of assembly Figure 1 A perspective view of the connector of a handheld oscillating saw tool;

[0029] Figure 12 It is during the third stage of assembly. Figure 1 A perspective view of the saw head of a handheld oscillating saw tool, with the saw blade locked in the coupling head;

[0030] Figure 13 Is Figure 12 During the third stage of assembly Figure 1 A perspective view of the connector of a handheld oscillating saw tool.

[0031] Figure 14 It is during the third stage of assembly. Figure 1 A cross-sectional view of the connector of a handheld oscillating saw tool; Detailed Implementation

[0032] Certain exemplary embodiments will now be described to provide an overall understanding of the structure, function, manufacture, and principles of use of the apparatuses, systems, and methods disclosed herein. One or more examples of these embodiments are illustrated in the accompanying drawings. Those skilled in the art will understand that the apparatuses, systems, and methods specifically described herein and illustrated in the drawings are non-limiting exemplary embodiments, and that the scope of the invention is defined only by the claims. Features illustrated or described in conjunction with one exemplary embodiment may be combined with features of other embodiments. Such modifications and variations are intended to be included within the scope of the invention.

[0033] Furthermore, in this disclosure, components with similar names in various embodiments often have similar features, and therefore, in specific embodiments, not every feature of every component with a similar name is necessarily fully described. Additionally, the extent to which linear or circular dimensions are used in the description of the disclosed systems, apparatuses, and methods is not intended to limit the types of shapes that can be used in conjunction with such systems, apparatuses, and methods. Those skilled in the art will recognize that equivalent dimensions of such linear and circular dimensions can be readily determined for any geometry. Those skilled in the art will also understand that dimensions may not be precise values, but are considered to be approximately such values ​​due to any number of factors such as manufacturing tolerances and the sensitivity of the measuring equipment. The dimensions and shapes of systems and apparatuses and their components can depend at least on the dimensions and shapes of the components to be used with the systems and apparatuses.

[0034] Generally, apparatus, systems, and methods are provided for assembling and operating a handheld oscillating surgical saw. In an exemplary embodiment, the saw head of the handheld oscillating surgical saw includes a coupling head configured to receive and retain a saw blade inserted into a slot in the coupling head, regardless of whether the coupling head is in an open or closed position. The coupling head includes a plurality of magnets configured to magnetically retain the saw blade within the slot of the coupling head. The coupling head is configured to magnetically retain the saw blade within the coupling head regardless of the orientation of the handheld oscillating surgical saw (e.g., the end of the saw blade points downwards). This magnetic retention reduces the likelihood of the saw blade loosening from the saw head before the coupling head is secured in a closed position that locks the saw blade in place.

[0035] Figure 1 An embodiment of a handheld oscillating surgical saw 100 is illustrated. The surgical saw includes a handpiece 102 configured to be held by a user. The handpiece has a saw head 104 configured to receive a saw blade 108. In the illustrated embodiment, the saw head 104 is fixedly attached to the handpiece 102. However, in an alternative embodiment, the saw head and the handpiece may be separated from each other. The saw head 104 includes a coupling head 106 that retains the saw blade 108 in a slot within the coupling head (e.g., Figure 3 In the slot 308 shown. The saw head 104 also includes an actuator (here, knob 110) operatively coupled to the coupling head 106 to lock the saw blade 108 in place for operation of the handheld oscillating surgical saw 100. Knob 110 rotates 120 degrees to move the coupling head between an unlocked position and a locked position. See below for reference. Figure 10 and Figure 14 The operation connection is described in more detail. In some implementations, the knob may be replaced with another form of actuator (e.g., lever, button, etc.).

[0036] To operate the handheld oscillating surgical saw 100, the user actuates a second actuator (e.g., trigger 112), and the saw blade 108 oscillates back and forth along a 4.5-degree arc. Trigger 112 is operatively coupled to a controller and motor in the handheld unit 102. When trigger 112 is pressed, a signal is sent to the controller, which controls the operating speed of the motor, thereby controlling the oscillation rate of the saw blade 108. Trigger 112 has a stroke of 10 mm, and the movement of trigger 112 is proportional to the oscillation speed of the saw blade 108. A mode switch 114 on one side of the handheld unit 102 is a slide lock that locks trigger 112 and prevents accidental start-up of the device's motor, thus preventing accidental start-up of the saw blade 108.

[0037] The handpiece 102 and / or saw head 104, as well as other embodiments of the oscillating saw tool described herein, may be formed of a rigid biocompatible material, such as stainless steel, titanium, or other materials. Rigid biocompatible materials can provide durability during one or more surgical procedures while experiencing vibrations caused by the oscillating saw blade 108.

[0038] Figures 2 to 5 Examples Figure 1 One embodiment of the saw head 104 of a handheld oscillating surgical saw 100. For example... Figure 2 As shown, the saw head 104 is configured to be connected to the saw blade 108 via a connector 106. The connector 106 includes sidewalls 202a, 202b, a magnet housing 204, and a bottom surface 306 (also in...). Figure 3 The slot 308 (as shown in the diagram) is defined by Figure 3 (As shown in the diagram). Sidewalls 202a, 202b, magnet housing 204, and bottom surface 306 form the base of connector 106. The base of connector 106 is covered by a cap 200, which includes a rod 602 extending through a slot and downward toward knob 110 (as shown in the diagram). Figure 6 (As shown). The gap between the cap 200 and the base of the connector 106 forms a slot. The cap 200 is movable between a first position and a second position. In the first position, the gap between the cap 200 and the bottom surface 306 provides clearance for the connecting portion 302 of the saw blade to slide between the cap and the bottom surface. In the second position, the cap 200 is lowered toward the base of the connector 106 to clamp the saw blade 108 between the cap 200 and the base of the connector 106.

[0039] Figure 3 An embodiment of saw head 104 is illustrated, wherein cap 200 (in Figure 2 (As shown in the image) has been removed to allow for observation of the slot 308 and other features of the connector 106. Figure 3 In this configuration, the saw blade 108 is positioned outside the slot 308. The saw blade 108 includes a connecting portion 302 that can be inserted into the connecting head 106. The connecting portion 302 of the saw blade 108 is generally U-shaped and has arms 300a, 300b. In some embodiments, the connecting portion 302 is thinner than the rest of the saw blade.

[0040] The saw blade 108 has a cutting portion 310, which has teeth 312 at its distal end. Figure 3In one embodiment, the cutting portion 310 of the saw blade 108 is generally rectangular in shape. In other embodiments, the saw blade may have any number of different structural configurations (e.g., shape, length, size). By way of example, in some aspects, the saw blade may have a generally rectangular body, while in others, it may have a generally triangular body (e.g., fan-shaped, such as radially projecting portions extending outward from the connecting portion, such that the teeth of the saw blade are positioned along the arcuate distal portion). Those skilled in the art will appreciate that the saw blade may have other suitable shapes.

[0041] exist Figure 3 In one embodiment, the slot 308 is generally shaped as a rectangular prism and configured to receive the connecting portion 302 of the saw blade 108, including arms 300a and 300b. The sidewalls 202a and 202b are generally parallel to each other and perpendicular to the surface 304 of the magnet housing 204 to form this rectangular shape. A bottom surface 306 extends between the sidewalls 202a and 202b and the surface 304 of the magnet housing 204 and forms the bottom of the slot 308. The slot 308 is configured to accommodate saw blades 108 of different thicknesses, for example, blades with a thickness between 0.4 mm and 1.47 mm at the connecting portion 302. The slot 308 opens to a height of 1.75 mm between the underside of the cap 200 and the bottom surface 306 to provide a clearance for inserting the saw blade 108.

[0042] In some embodiments, the slot 308 may have an alternative shape. For example, the sidewalls 202a and 202b may not be parallel to each other. In such an example, the bottom surface 306 may be trapezoidal in shape, and the sidewalls 202a and 202b may be closer together at the rear of the slot 308 than at the opening of the slot 308. In such embodiments, the connecting portion 302 may have a similar trapezoidal shape. In another alternative embodiment, at least one of the sidewalls 202a and 202b and / or surface 304 has a curved shape. In such alternative embodiments, the connecting portion of the saw blade 108 may have a corresponding curved shape.

[0043] Figure 4 yes Figure 1 A perspective view of the saw head 104 of a handheld oscillating surgical saw 100, with the saw blade 108 inserted into a slot. Figure 4 The cap 200 (not depicted in the text) Figure 2 (As shown) to allow observation of the interior of the slot 308. When the saw blade 108 is inserted into the slot 308, the arms 300a, 300b of the connecting portion 302 of the saw blade 108 contact the surface 304 of the magnet housing 204. Figure 4In one embodiment, the magnet housing 204 includes two magnets, each enclosed within a cylindrical portion of the magnet housing 204. Each of the two magnets in the magnet housing 204 is aligned with one of the arms 300a, 300b parallel to the insertion axis A. During assembly, the cover 200 (in...) Figure 2 (as shown in the diagram) is located in the connector 106, wherein the capped rod 602 (in) Figure 6 (As shown in the diagram) it extends downward into the hole 402 in the base of the connector 106. When the saw blade 108 is pushed into the slot 308 indicated by arrow 400, the arms 300a, 300b advance into the slots 308 on opposite sides of the rod 602 of the cap 200.

[0044] In some implementations, any suitable number of magnets can be used to engage the saw blade. For example, a large magnet can be used instead of... Figure 4 The implementation uses two cylindrical magnets. In another example, three or more magnets can be used to hold a saw blade that can have any number of arms.

[0045] As the arms 300a and 300b of the saw blade 108 move into the slot 308, the arms 300a and 300b experience a magnetic field generated by a magnet in the magnet housing 204. The pulling force of the magnet on the arms 300a and 300b provides visual, tactile, and / or auditory feedback to the user inserting the saw blade 108. In some embodiments, the auditory feedback is the sound of the arms 300a and 300b contacting the magnet housing 204. In some embodiments, the tactile feedback is the pulling force of the magnetic field on the saw blade felt by the user inserting the saw blade 108. In some embodiments, the visual feedback is the contact of the arms 300a and 300b with the surface 304 of the magnet housing 204.

[0046] Figure 5 This is a cross-sectional view of the connector 106 of the saw head 104. The cross-section shows the magnet 500 positioned inside the magnet housing. The magnet 500 is a cylindrical neodymium magnet and is one of two magnets in the magnet housing 204, with each magnet corresponding to the position of the arms 300a, 300b of the saw blade 108 when the saw blade 108 is positioned in the slot 308.

[0047] In some embodiments, the connector 106 does not employ a magnet housing 204 containing one or more magnets, but may instead include one or more magnets attached to a wall. In some embodiments, the rear wall of the connector may be made of a magnetic material. In some embodiments, the size or selection of the magnets is determined relative to the thickness or weight of the saw blade.

[0048] Figure 6 yes Figure 1A perspective view of the cap 200 of the connector 106 of a handheld oscillating surgical saw 100. The cap 200 includes a top 600 and a rod 602. When the cap 200 is assembled in the connector 106, the rod 602 extends into the hole 402 (in... Figure 4 As shown in the diagram, it is fixed when the knob 110 is turned. The lower side 604 of the cover 200 includes recessed members 404a and 404b on the saw blade 108 (in... Figure 4 (As shown in the diagram) mating protrusions 606a and 606b. Protrusions 606a and 606b can be, for example, protrusions, pins, etc. Recesses can be, for example, notches, holes, etc. In some embodiments, one protrusion on the cap 200 can mat with one recess on the saw blade 108. In some embodiments, more than one protrusion on the cap 200 can mat with more than one recess on the saw blade 108. Figure 6 In one embodiment, the protruding members 606a and 606b positioned on the lower side 604 of the cover 200 are configured to interact with... Figure 7 The recessed components 706a and 706b of the saw blade 700 shown are joined together.

[0049] Figure 7 A connecting portion of another embodiment of the saw blade 700 is shown. The saw blade 700 includes a connecting portion 702. The connecting portion 702 has a U-shaped cut 704 that forms arms 708a, 708b and is configured to allow the rod 602 of the cap 200 (in) Figure 6 (As shown in the image) extends through the U-shaped cut. The connecting portion 702 also includes two recessed members 706a, 706b, which are configured to engage with the cap (e.g., Figure 6 The protruding member on the lower side of the cover 200 shown (e.g., Figure 6 The convex members 606a and 606b shown are mated. The patterns of the concave and convex members between the connecting portion of the saw blade and the lower side of the cap may match or may not match (for example, matching is that each concave member on the connecting portion of the saw blade mats with a convex member on the lower side of the cap, and mismatch is that there are more concave members on the connecting portion of the saw blade than convex members on the lower side of the cap).

[0050] In one embodiment, the connecting portion has a width W1 of 20.5 mm and a length L of 20.2 mm. In this embodiment, the U-shaped cutout 704 has a width W2 of 9.5 mm, and each arm 708a, 708b has a width W3 of 5.5 mm.

[0051] In an alternative embodiment, the connecting portion does not include a U-shaped geometry. In such an alternative embodiment, the connection between the connecting portion of the saw blade and the slot of the connecting head of the handheld oscillating surgical saw is defined by the thickness and width of the saw blade and the thickness and height of the slot. In such an alternative embodiment, the connecting head may include an arm or proximal side configured to contact a magnet housing. The arm or proximal side is subjected to the magnetic field of at least one magnet in the magnet housing.

[0052] Figure 8 This is during the first stage 800 of attaching the saw blade to the connector 106 of the handheld oscillating surgical saw 100. Figure 1 A perspective view of a handheld oscillating saw tool. First, the user ensures that knob 110 is in the unlocked position. In the first position, the cap 200 of the coupling head 106 is raised above the slot 308 (indicated by arrow 802), such that the coupling portion 302 of the saw blade 108 is in contact with the cap 200 and the bottom surface 306 (in... Figure 3 (As shown in the diagram) There is a gap between them to allow sliding into the slot 308. Figure 8 In one embodiment, the slot 308 opens to a height of 1.75 mm between the underside of the cap 200 and the bottom surface 306 to provide a clearance for inserting the saw blade 108. With the cap 200 in the first position, the user then inserts the connecting portion 302 of the saw blade 108 into the slot 308 (indicated by arrow 804).

[0053] Figure 9 It was during the second phase of assembly, 900. Figure 1 A perspective view of a handheld oscillating saw tool. With the cap 200 in the first position, the user inserts the saw blade 108 into the slot 308. As the user inserts the connecting portion 302 of the saw blade 108 into the slot 308, the arms 300a, 300b of the saw blade 108 are pulled backward by the magnetic force generated by the magnet in the magnet housing 204 (indicated by arrow 902). This backward pull and contact between the arms 300a, 300b and the surface 304 provides the user with visual, tactile, and / or auditory feedback that the saw blade 108 has reached the rear of the slot 308 at the surface 304.

[0054] Figure 10 This is a cross-sectional view of the saw head 104 of a handheld oscillating surgical saw 100, with the cover 200 in the raised, unlocked position. In the unlocked position, the cover 200 is raised approximately 1.75 mm above the bottom surface 306 to provide clearance for inserting the saw blade 108 into the slot 308. When the knob 110 is in the unlocked position (in... Figure 10 (shown in the middle) and locked position (in Figure 14When rotated between the knob 110 and the cover 200 (shown in the diagram), two mechanisms provide an operational connection between the knob 110 and the cover 200. When the knob 110 is rotated from the locked position to the unlocked position, the first mechanism raises the cover 200. When moved from the locked position to the unlocked position, a pin (not shown) interacts with the knob 110 to raise the vertical member 1004. As the vertical member 1004 moves upward, it contacts the lever 602 of the cover 200 and pushes the cover 200 into the open position. Figure 10 The image shows the positions of the knob 110, vertical member 1004, lever 602, and cover 200 in the unlocked position.

[0055] Figure 11 A close-up view 1100 of this second stage of component 900 is shown. The top surface 1104 of the cap 200 is located above the side walls 202a, 202b, indicating that the cap 200 (and the knob 110, in...) Figures 9 to 10 (As shown in the diagram) in the unlocked position. When the saw blade 108 is pushed back (by the user) and pulled (by one or more magnets) into the slot 308, the coupling portion 302 of the saw blade 108 is positioned within the coupling head 106. The magnetic force from the magnets in the magnet housing 204 on the saw blade 108 is sufficient to allow the saw blade 108 to be held in the coupling head 106 when the tool is oriented with the saw blade pointing downwards. This magnetic retention can be achieved with saw blades of different thicknesses and weights, and the magnets in the magnet housing 204 can have a strength and size corresponding to the saw blade intended for use with the tool.

[0056] The magnetic force also helps to move the saw blade 108 into contact with the magnet housing 204, where the saw blade is positioned and locked in place within the coupling head 106. In this position, the recessed members 404a, 404b (in...) Figure 4 (as shown in the image) and the protruding members 606a, 606b on the lower side 604 of the cover 200 (in...) Figure 6 (As shown in the image) Alignment.

[0057] Figure 12 It was during the third stage of assembly, 1200. Figure 1A perspective view of a handheld oscillating saw tool. At the start of the third stage of assembly, the connecting portion 302 of the saw blade is positioned in the slot 308 and contacts the surface 304 of the magnet housing 204. The knob 110 is rotated from the unlocked position (indicated by arrow 1202) to the locked position. The rotation of the knob 110 from the unlocked position to the locked position moves the cover 200 from a first position to a second position (indicated by arrow 1204) and clamps the connecting portion 302 of the saw blade 108 between the bottom surface 306 of the connector 106 and the lower side 604 of the cover 200. The protruding members 606a and 606b on the lower side 604 of the cover 200 are aligned with the recessed members 404a and 404b in the connecting portion 302 of the saw blade 108 and extend vertically within the recessed members 404a and 404b. The connection of the convex members 606a, 606b and concave members 404a, 404b of the connecting portion 302 of the saw blade 108 further helps to keep the saw blade 108 in the proper position in the connecting head 106 by providing mechanical interference to prevent the saw blade 108 from being pulled out of the slot 308.

[0058] Figure 13 Is Figure 12 During the third stage of assembly Figure 1 A close-up perspective view 1300 of the connector head of a handheld oscillating saw tool. During this assembly stage, the cap 200 is pulled down from a first position (indicated by arrow 1302) to a second position to clamp the connector portion 302 of the saw blade 108 into the slot 308. As shown... Figure 13 As shown, the top surface of the cap 200 is lower in the second position than in the first position, which is... Figure 9 and Figure 11 The second stage of assembly is shown in the diagram. In this embodiment, the top surface 1104 of the cap 200 is flush with or below the sidewalls 202a, 202b that form part of the boundary of the slot 308. After the saw blade 108 has been locked in place in the coupling head 106, as... Figure 12 and Figure 13 As shown, a handheld oscillating saw tool is ready to be used to perform surgical procedures.

[0059] Figure 14 This is a cross-sectional view of the saw head 104 of a handheld oscillating surgical saw 100, with the cap 200 in the lowered, locked position. As previously mentioned, when the knob 110 is in the unlocked position (in... Figure 10 (shown in) and locking position (in) Figure 14 When rotated between (as shown in the diagram), two mechanisms provide operational engagement between the knob 110 and the cover 200. The first mechanism is described above regarding... Figure 10The description is as follows. When knob 110 is rotated from the unlocked position to the locked position, the second mechanism lowers the cover 200. When moved from the unlocked position to the locked position, a pin (not shown) interacting with knob 110 causes vertical member 1004 to move downward toward knob 110 and allows spring 1002 to expand, thereby applying a downward force to cylindrical member 1006, which is coupled to rod 602 and pulls the cover 200 downward to clamp the saw blade 108 in slot 308. As previously discussed, when the cover 200 moves downward, protrusions 606a, 606b align with concave members 404a, 404b of the coupling portion 302 of the saw blade 108 to lock the saw blade 108 in place.

[0060] Although described in the context of handheld surgical tools, those skilled in the art will understand that the surgical tools described herein can be used in applications such as robot-assisted surgery, where the handpiece is replaced by a tool housing that is then coupled to a manipulator arm or another manipulated component of a robotic surgical system. In such embodiments, the saw head and coupling head are mounted within the tool housing.

[0061] The device disclosed herein may be designed for single-use disposal or for multiple-use applications. However, in either case, the device can be refurbished and reused after at least one use. Refurbishment may include any combination of disassembly of the device, subsequent cleaning or replacement of specific parts, and subsequent reassembly steps. Specifically, the device is detachable, and any number of specific parts or components of the device can be selectively replaced or removed in any combination. After cleaning and / or replacing specific parts, the device can be reassembled for subsequent use at a refurbishment facility or by the surgical team just before surgical procedures. Those skilled in the art will recognize that various techniques can be used for disassembly, cleaning / replacement, and reassembly of the device. The use of such techniques and the resulting refurbished device are within the scope of this application.

[0062] The apparatus described herein can be processed before use. First, new or used instruments are acquired and cleaned as needed. The instruments can then be sterilized. In one sterilization technique, the instrument is placed in a closed, sealed container (such as a plastic or TYVEK bag). The container and instrument are then placed in a radiation field or toxic gas field that can penetrate the container, such as ethylene oxide, gamma radiation, X-rays, or high-energy electrons. The radiation kills bacteria on the instrument and in the container. The sterilized instrument can then be stored in a sterile container. Sealing the container keeps the instrument sterile until it is opened in a medical facility.

[0063] Sterilization can be performed by any of the many methods known to those skilled in the art, including beta or gamma radiation, ethylene oxide, steam, and liquid baths (e.g., cold soaking).

[0064] Those skilled in the art will recognize other features and advantages of these apparatuses, systems, and methods based on the embodiments described above. Therefore, this disclosure should not be limited to what has been specifically shown and described, unless indicated by the appended claims. All publications and references cited herein are expressly incorporated by reference in their entirety for all purposes.

[0065] This disclosure has been described by way of example only in the context of the overall disclosure provided herein. It will be appreciated that modifications may be made within the spirit and scope of the claims without departing from the overall scope of this disclosure.

Claims

1. A surgical instrument comprising: Handheld items; and A saw head, operatively coupled to the handpiece, the saw head including a coupling head comprising a slot and at least one magnet, the slot being configured to releasably receive a surgical saw blade configured to cut bone, and the at least one magnet being configured to magnetically attract the saw blade. The coupling head is configured to move between a first position and a second position. In the first position, the slot has a first height and the coupling head is configured to selectively receive and release the surgical saw blade therein. In the second position, the slot has a second height less than the first height and the coupling head is configured to securely house the saw blade therein.

2. The tool of claim 1, wherein the connector includes a movable cap configured to be in an upward position when the connector is in the first position and in a downward position when the connector is in the second position.

3. The tool of claim 2 further includes an actuator configured to be actuated to selectively move the cap between the first position and the second position.

4. The tool of claim 2, wherein the cap includes at least one protruding member extending from the cap, the at least one protruding member being configured to engage at least one corresponding concave member formed in the saw blade when the coupling head is in the second position.

5. The tool of claim 1, further comprising an actuator configured to be actuated to selectively move the coupling head between the first position and the second position.

6. The tool of claim 1, wherein the slot is defined by a bottom surface, a top surface, a left side wall, a right side wall, and a distally facing surface; The at least one magnet is positioned on the distal-facing surface; and The saw blade is configured to extend the slot distally.

7. The tool of claim 6, wherein the top surface is defined by a cap, the cap being configured to be movable relative to the distally facing surface to move the coupling head between the first position and the second position.

8. The tool of claim 1, wherein the coupling head, moving from the first position to the second position, is configured to provide feedback to the user indicating that the saw blade is securely positioned therein, the feedback including at least one of visual feedback, auditory feedback, and tactile feedback.

9. The tool of claim 8, wherein the feedback includes at least the visual feedback; The tool also includes the saw blade; and The saw blade includes an alignment feature configured to align with the connector when the connector is in the second position.

10. The tool of claim 8, wherein the feedback includes at least the auditory feedback; The tool also includes the saw blade; and The magnetic engagement of the saw blade and the magnet is configured to provide the auditory feedback.

11. The tool of claim 8, wherein the feedback includes at least the tactile feedback; The tool also includes the saw blade; and The interaction between the magnetic field generated by the magnet and the saw blade is configured to provide the tactile feedback.

12. The tool according to claim 1, further comprising the saw blade; The at least one magnet includes a first magnet and a second magnet; The saw blade includes a U-shaped proximal portion, which includes a first arm and a second arm; and When the connector is in the second position, the first arm is positioned adjacent to the first magnet, and the second arm is positioned adjacent to the second magnet.

13. A surgical method comprising: Insert the surgical saw blade into the slot formed between the base of the connector of the surgical tool and the cap; Slide the saw blade proximally into the slot until the saw blade contacts the distal wall of the base and engages at least one magnet at the distal wall; and Close the cap of the connector to secure the saw blade to the connector.

14. The surgical method of claim 13, wherein the saw blade engaging the at least one magnet provides the user with at least one of visual feedback, auditory feedback, and tactile feedback.

15. The surgical method of claim 13, wherein closing the cap of the connector comprises clamping the cap onto the saw blade.

16. The method of claim 13, wherein closing the cap includes actuating an actuator of the surgical instrument, the actuator causing the cap to move relative to the base.

17. The method of claim 13, wherein closing the cap comprises engaging at least one protruding member extending from the cap with at least one corresponding concave member formed in the saw blade.

18. The method of claim 16, further comprising, after closing the cap, re-acting the actuator to move the cap relative to the base, and subsequently removing the saw blade from the slot.

19. The method of claim 17, wherein the saw blade cannot be removed from the slot until the actuator is actuated again.

20. The surgical method of claim 13, further comprising, while the saw blade is fixed to the connector, oscillating the saw blade relative to the bone.

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