Handheld surgical device with rotating portion

Abstract

An apparatus may include a shaft configured to be rotated about a central axis by a motor. The shaft may include a working portion including a center of mass offset from the central axis and at least one cutting edge portion extending toward an outer periphery of the shaft.

Description

Cross-reference to related applications

[0001] This application claims priority to U.S. Provisional Patent Application No. 63 / 538,959, filed on September 18, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure generally relates to a handheld surgical device configured to perform one or more surgical procedures. Background Technology

[0003] Surgical tools are used in healthcare to affect anatomical sites, such as during surgical procedures (e.g., cutting, removing, cauterizing, etc.). Typically, each surgical tool is constructed to perform a specific function. Therefore, when different functions are required to complete a surgical procedure, professionals may need to use multiple surgical tools during the procedure. Summary of the Invention

[0004] When healthcare professionals use multiple surgical instruments, the manual operation of switching between two surgical instruments can be very time-consuming and may lead to increased associated costs and complications.

[0005] The disclosure herein provides improved handheld surgical devices and methods related to handheld surgical devices. Some embodiments of the handheld surgical devices described herein are configured to have a working portion that is contained (when not in operation) and then exposed (during operation). As used herein, the term "contained" can mean that an element is located or positioned such that it is at least partially or completely protected or covered by another structure. Thus, a contained working portion can mean that at least a portion or all of the working portion is protected or covered by another structure (e.g., a concave portion, a covered cap, or a partially enclosed spoon).

[0006] According to some embodiments, for example, when the work section is not in operation, the work section can be contained within the concave portion. When the work section is activated, at least a portion of the work section becomes exposed from the concave portion, so that at certain times, the work section is not covered by the concave portion.

[0007] According to some embodiments, for example, the working portion is formed at or near the end of the shaft, such that the working portion rotates as the shaft rotates. The working portion has a center of mass offset from or off-center from the central axis of the shaft. Due to the offset of the center of mass, the working portion rotates about an axis different from the central axis of rotation around which the rest of the shaft rotates. The working portion has one or more cutting edges or cutting edge portions extending toward the outer periphery of the shaft. According to some embodiments, the one or more cutting edge portions may extend beyond the outer periphery. The one or more cutting edge portions are configured to rotate when activated (e.g., energized, turned on, etc.). When not activated, the working portion is received within a concave portion such that one or more cutting edge portions of the working portion are covered by the concave portion. When activated, the shaft and the working portion rotate, and the rotation of the working portion causes one or more cutting edge portions of the working portion to become exposed from the concave portion, such that rotating one or more cutting edge portions can cut material without obstruction by the concave portion. The concave portion separates the tissue intended to be cut by the working portion from the surrounding tissue. Therefore, the concave portion helps prevent damage to tissue or accidental cutting when the device is activated.

[0008] Furthermore, when the working portion is accommodated, the portion covering the working portion (e.g., a concave portion) may include another working portion configured to perform different surgical procedures. Therefore, some embodiments of the handheld surgical device can be used to perform two or more specific functions. Advantageously, embodiments of the handheld surgical device described herein can reduce or eliminate the need to switch between surgical devices during surgical procedures. Thus, time, associated costs, or both can be saved.

[0009] This handheld surgical device has a distal portion and a proximal portion. The terms "proximal" and "distal" are used herein to refer to the portion of the handheld surgical device relative to the operator's hand. In other words, when in use, the proximal portion of the handheld surgical device is closer to the operator's hand than the distal portion. The proximal portion includes a handle configured to be held by the operator's hand.

[0010] In some embodiments, the switch is located at the proximal portion (e.g., a handle) and is configured to operate a motor to rotate a shaft in the distal portion, thereby rotating a working portion connected to the shaft. In other embodiments, the switch may be located in different positions, for example, at the distal portion.

[0011] In some embodiments, the handheld surgical device is activated by a remote switch, such as a foot switch (wired or wireless), which is configured to activate the motor of the handheld surgical device when activated by a foot or similar device. Therefore, in some embodiments, the switch is not located at the proximal portion of the handheld surgical device.

[0012] In some embodiments, the handheld surgical device includes both a switch located at the proximal portion (e.g., the handle) and a remote switch (e.g., a foot switch, etc.). A concave portion is configured to protect one or more nearby anatomical sites when the working portion is activated. When the switch is off, the motor is configured to ensure that the working portion is received within the concave portion (e.g., when the motor is not activated to rotate the shaft, one or more cutting edges or edge portions of the working portion are received within the concave portion).

[0013] In some embodiments, the shaft and the working part are balanced (e.g., using a grinding part or a counterweight). Attached Figure Description

[0014] Referring to the accompanying drawings, which form part of this disclosure, embodiments in which the apparatus and methods described herein can be practiced are shown.

[0015] Figure 1 Schematic illustrations are shown based on some embodiments of a handheld surgical device.

[0016] Figure 2 A schematic diagram of a portion of the distal part of a handheld surgical device according to some embodiments is shown.

[0017] Figure 3A and Figure 3B A schematic side view is shown based on some embodiments of a handheld surgical device.

[0018] Figure 4A and Figure 4B It shows Figure 3A and Figure 3B A side view of the shaft and working part of the handheld surgical device shown.

[0019] Figure 5 It shows Figure 3A and Figure 3B An end view of a portion of the working part of the handheld surgical device shown.

[0020] Figure 6 An end view of a portion of the working part of a handheld surgical device according to some embodiments is shown.

[0021] Figure 7 An end view of a portion of the working part of a handheld surgical device according to some embodiments is shown.

[0022] Figure 8 A perspective view of a portion of the working part of a handheld surgical device according to some embodiments is shown.

[0023] Figure 9An end view of a portion of the working part of a handheld surgical device according to some embodiments is shown.

[0024] Figure 10 A perspective view of a portion of the working part of a handheld surgical device according to some embodiments is shown.

[0025] Figure 11 A schematic diagram of a portion of the distal part of a handheld surgical device according to some embodiments is shown. Specific Implementation Typically, the working portion of a handheld surgical device is configured to perform a specific function during a medical procedure performed by a healthcare professional. During a medical procedure, the healthcare professional may need to switch between different handheld surgical devices at or near the same anatomical location. According to some embodiments, for example, a device for cutting and removing soft tissue may be used, and then, when that device approaches bone, a different device may be needed to remove the bone. Repeatedly switching between different handheld surgical devices within the wound to complete the procedure can increase surgical time and associated costs. Furthermore, switching between different surgical devices may require the healthcare professional to take their eyes off the anatomical area (e.g., the wound) and may require additional mental concentration to obtain the correct tool for the required function in the anatomical area. Therefore, alternating between several tools can be cumbersome and may increase healthcare professional fatigue, the risk of contamination, infection, and / or harm to the patient. Contamination, infection, and / or accidental injury may cause or exacerbate patient problems and problems with treatment planning. Therefore, there is a clear advantage to handheld surgical devices that can reduce and / or eliminate the cumbersome switching between different tools.

[0027] The handheld surgical device described herein can provide multiple tools and / or functions in a single device. Therefore, the handheld surgical device described herein can reduce and / or eliminate the cumbersome switching between different tools.

[0028] One embodiment of the handheld surgical device described herein includes a concave portion having a cutting edge disposed at a distal portion, wherein the concave portion can accommodate a working portion having one or more cutting edges or cutting edge portions. When the working portion is activated (e.g., energized) by a switch connected to a control unit, a motor, and a power source, the motor rotates a shaft, which in turn rotates the working portion. The shaft rotates about its central axis. The working portion has a center of mass offset from or deviated from the central axis of the shaft. As the working portion rotates, it rotates about an axis different from the central axis of the shaft. The rotation of the working portion exposes one or more cutting edge portions of the working portion from the concave portion (i.e., as the working portion is activated, the cutting edge portions are no longer accommodated). The shaft and the working portion are balanced in a rotational manner (e.g., by a grinding portion or counterweight disposed at the shaft).

[0029] Figure 1 A schematic illustration of a handheld surgical device 100 according to some embodiments is shown. The handheld surgical device 100 includes a proximal portion 102 and a distal portion 104. The proximal portion 102 includes a handle 106 configured for gripping by an operator's hand, preferably comfortably, when using the handheld surgical device 100. The distal portion 104 includes a working portion 108. At least a portion of the working portion 108 is configured to be inserted into a wound or anatomical region during surgery to perform a function (e.g., cutting bone, cutting tissue, etc.).

[0030] In some embodiments, the distal portion 104 may be attached to or detached from the proximal portion 102 at the attachment region 110. According to some embodiments, for example, the distal portion 104 may be detached from the proximal portion 102 at the attachment region 110 after use in a surgical procedure, and then a new (i.e., unused) distal portion 104 may be attached to the proximal portion 102 at the attachment region 110 before use in another surgical procedure. Alternatively, the distal portion 104 may be removed and cleaned / sterilized before being attached to the proximal portion 102 for future use. That is, the distal portion 104 may be discarded after use or sterilized after use for reuse.

[0031] The distal portion 104 includes a neck portion 112 that extends from the attachment region 110 to the working portion 108. The working portion 108 of the handheld surgical device 100 may be accommodated within a concave portion 114 located at or near the end of the distal portion 104. The concave portion 114 may be, for example, bowl-shaped and have a cutting edge 116. In some embodiments, the concave portion 114 may be a covered cap or a partially enclosed spoon-like object. According to some embodiments, for example, the cutting edge 116 and the concave portion 114 may be used to cut and / or scoop soft tissue without a power motor. The working portion 108 is connected to a motor and a power source, such that the working portion 108 can be activated to cut tissues harder than soft tissue (e.g., bone, etc.). In some embodiments, the power source may include a self-contained battery in the handle 106. In some embodiments, power may be provided by one or more wires connected to one or more external batteries. In some embodiments, power may be alternating current provided by one or more external sources (e.g., a power outlet). In other embodiments, the power source may include a pneumatic power source or a vacuum-driven power source. Other types of power sources may be used in other embodiments. The concave portion 114 separates the tissue intended to be cut by the working portion 108 from the surrounding tissue. Therefore, the concave portion 114 helps prevent damage to or accidental cutting of tissue outside the healthcare professional's target area.

[0032] Advantageously, healthcare professionals can use the handheld surgical device 100 for at least two different functions (e.g., to affect different anatomical regions). Therefore, the handheld surgical device 100 can eliminate the need to manually switch between two different surgical tools during surgery (e.g., for cutting soft tissue and for cutting bone).

[0033] As further described herein, the working portion 108 can be exposed above the cutting edge 116 of the concave portion 114 by, for example, being activated to rotate within the concave portion 114. The proximal portion 102 of the handheld surgical device 100 includes a switch 118 disposed at or near the handle 106. Although not shown, some embodiments may include switches disposed in different locations, for example, at the distal portion. The switch 118 is connected to a control unit in the handle 106, which is connected to a motor, which in turn is connected to a shaft inside the neck portion 112. The working portion 108 is located at or near the distal end of the shaft, or otherwise connected to the distal end of the shaft. In some embodiments, the working portion 108 is integrally formed with the shaft such that the working portion 108 is part of the shaft. In some embodiments, the working portion is removably attached to the shaft such that the working portion can be replaced. When the switch 118 is activated, the control unit supplies power to the motor to rotate the shaft and the working portion 108. The handheld surgical device 100 may have various shapes and sizes.

[0034] Figure 2 A schematic cross-sectional side view of a portion of a handheld surgical device 200 is shown. The distal portion 202 of the handheld surgical device 200 includes a housing 204 surrounding a shaft 206. The housing 204 has a body configured to define an inner cavity 208, within which the shaft 206 is located.

[0035] The housing 204 includes or is connected to a concave portion 210 with a cutting edge 212. The concave portion 210 includes a concave structure having a bowl-shaped shape. The bowl-shaped shape of the concave portion 210 may have a closed lower surface, circular sides, and an opening at the upper surface.

[0036] Shaft 206 includes and / or is connected to working portion 214. Working portion 214 includes one or more cutting edges or cutting edge portions extending toward the outer periphery of the shaft. Thus, when shaft 206 rotates, the cutting edge portions rotate to perform cutting (e.g., bone, meat, etc.).

[0037] Shaft 206 is configured to rotate about its central axis 220 during operation (e.g., energization, startup, etc.). Figure 2 As indicated by the arrows and axes in the diagram. The working part 214 has a center of mass that is offset from or deviates from the central axis 220 of the shaft 206. During operation, the shaft 206 causes the working part 214 to rotate. Because the center of mass of the working part 214 is offset from the central axis 220, the working part 214 and its cutting edge portion rotate about an axis different from the central axis 220.

[0038] As the working portion 214 is rotated, the cutting edge portion of the working portion 214 becomes exposed when it rises above the cutting edge 212 of the concave portion 210. In other words, during one rotation, the cutting edge portion of the working portion 214 becomes higher than the cutting edge 212 of the concave portion 210.

[0039] The powered rotation of the cutting edge portion of the working section 214 can cut tissue, bone, or a combination of tissue and bone that would otherwise be difficult or impossible to cut with the cutting edge 212. According to some embodiments, for example, the cutting edge portion of the working section 214 can function to tear, chisel, or shave tissue, bone, or a combination of tissue and bone. The cutting edge portion of the working section 214 may be made of one or a combination of surgical stainless steel or other materials.

[0040] When the working section 214 is not in operation (e.g., not in use), the motor connected to the shaft 206 stops to ensure that the cutting edge portion of the working section 214 is guided away from or substantially away from the opening of the concave portion 210, such that the cutting edge portion is received within the concave portion 210 (i.e., the cutting edge portion can face the bottom surface of the concave portion 210). According to some embodiments, for example, the cutting edge portion is positioned near the lower surface of the bowl-shaped member and away from the opening at the upper surface. In other words, the cutting edge portion of the working section 214 is substantially surrounded by the concave portion 210. This allows the cutting edge 212 of the concave portion 210 to be used (e.g., for cutting or scooping soft tissue, or a combination of cutting and scooping soft tissue) without being obstructed by the cutting edge portion of the working section 214. The shaft 206 may include a grinding section 222 (i.e., the place where material is removed from the shaft 206) or a counterweight portion disposed at the shaft 206 to balance the working section 214 in a rotational manner.

[0041] Figure 3A and Figure 3B A schematic side view of a handheld surgical device 300 according to some embodiments is shown. The handheld surgical device 300 includes a proximal portion 302, a distal portion 304, a handle 306, an operating portion 308, an attachment region 310, a neck portion 312, a concave portion 314, a cutting blade 316, and a switch 318, wherein these elements are similar to... Figure 1 Similar features shown and described.

[0042] The proximal portion 302 includes a control mechanism 320 connected to a switch 318 and a motor 322. The motor 322 and the control mechanism 320 are connected to a power source 324 (e.g., a battery) for supplying power to the motor 322. When the switch 318 is activated, the control mechanism 320 allows power to be supplied to the motor 322, which causes the shaft 326, connected to the motor 322 and the working portion 308, to rotate.

[0043] Rotating the working part 308 causes one or more cutting edge portions of the working part 308 to rotate. Figure 3A The cutting edge portion of the working section 308 is shown to be exposed outside the concave portion 314 (e.g., the motor is activated). Figure 3B The diagram shows the motor being de-energized (i.e., shaft 326 is not rotating), and in this state, one or more of the control mechanism 320 and motor 322 ensure that the cutting edge portion of the working part 308 is accommodated within the concave portion 314 so that the cutting edge portion does not obstruct the cutting edge 316.

[0044] The shaft 326 may include a grinding portion 330 (i.e., the place where material is removed from the shaft 326) or a counterweight portion disposed on the shaft 326 to balance the working portion 308 in a rotational manner.

[0045] Figure 4A and Figure 4B It shows Figure 3A and Figure 3B A side view of the axis and working part of an embodiment of the handheld surgical device 300 shown. Figure 5 An end view of a portion of the working portion of a handheld surgical device 300 is shown. Shaft 326 includes a working portion 308 and a grinding portion 330. The working portion 308 includes a first surface 404 and a second surface 406 located on the side of the working portion 308 opposite to the first surface 404. The working portion 308 includes a first cutting edge portion 408 and a second cutting edge portion 410 located on the side of the working portion 308 opposite to the first cutting edge portion 408. The first cutting edge portion 408 and the second cutting edge portion 410 extend toward the outer periphery of shaft 326. According to some embodiments, the first cutting edge portion 408 and / or the second cutting edge portion 410 may extend beyond the outer periphery.

[0046] A first cutting edge portion 408 is formed between a first surface 404 and a second surface 406, such that the first cutting edge portion 408 connects the first surface 404 and the second surface 406. A second cutting edge portion 410 is formed between the first surface 404 and the second surface 406, such that the second cutting edge portion 410 connects the first surface 404 and the second surface 406. The first surface 404 has a curved or concave shape extending along the length of the working portion 308. The second surface 406 has a curved or concave shape extending along the length of the working portion 308. In some embodiments, the first cutting edge portion 408 and the second cutting edge portion 410 are substantially parallel.

[0047] The working portion 308 has a center of mass that is offset from or off-center from the central axis 400 of the shaft 326. During operation, the shaft 326 causes the working portion 308 to rotate. Because the center of mass of the working portion 308 is off-center from the central axis 400, the working portion 308 (including the first cutting edge portion 408 and the second cutting edge portion 410) rotates about an axis 402 that is different from and / or offset from and / or moved away from the central axis 400 of the shaft 326.

[0048] In some embodiments, the first surface 404 and / or the second surface 406 are configured or shaped to perform the function of scooping or otherwise collecting material (e.g., bone or tissue) cut by the first cutting edge portion 408 and / or the second cutting edge portion 410. According to some embodiments, for example, as the working portion 308 rotates and the first cutting edge portion 408 and the second cutting edge portion 410 cut material (e.g., bone or tissue), the curved or concave shape of the first surface 404 and / or the second surface 406 scoops or otherwise collects the cut material. In some embodiments, one or more surfaces forming, opposite, surrounding, or adjacent to the first surface 404 and / or the second surface 406 are configured or shaped to perform the function of scooping or otherwise collecting material (e.g., bone or tissue) cut by the first cutting edge portion 408 and / or the second cutting edge portion 410. In some embodiments, one or more surfaces forming, opposite, surrounding, or adjacent to the first cutting edge portion 408 and / or the second cutting edge portion 410 are configured or shaped to perform the function of scooping or otherwise collecting material (e.g., bone or tissue) cut by the first cutting edge portion 408 and / or the second cutting edge portion 410.

[0049] Figure 6 An end view of another embodiment of a portion of the working section of a handheld surgical device is shown. The working section 500 includes a first surface 502 and a second surface 504. The working section 500 includes a first cutting edge portion 506 extending toward the outer periphery of an axis. According to some embodiments, the first cutting edge portion 506 may extend beyond the outer periphery. The first cutting edge portion 506 is located between the first surface 502 and the second surface 504. In some embodiments, the first surface 502 and / or the second surface 504 are wholly or partially curved, convex, or angled.

[0050] In some embodiments, the first surface 502 and / or the second surface 504 are configured or shaped to perform the function of scooping or otherwise collecting material (e.g., bone or tissue) cut by the first cutting edge portion 506. According to some embodiments, for example, as the working portion 500 rotates and the first cutting edge portion 506 cuts material (e.g., bone or tissue), the first surface 502 and / or the second surface 504 can scoop or otherwise collect the cut material. In some embodiments, one or more surfaces forming, opposite, surrounding, or adjacent to the first surface 502 and / or the second surface 504 are configured or shaped to perform the function of scooping or otherwise collecting material (e.g., bone or tissue) cut by the first cutting edge portion 506. In some embodiments, one or more surfaces forming, opposite, surrounding, or adjacent to the first cutting edge portion 506 are configured or shaped to perform the function of scooping or otherwise collecting material (e.g., bone or tissue) cut by the first cutting edge portion 506.

[0051] Figure 7 An end view of another embodiment of a portion of the working section of a handheld surgical device is shown. The working section 600 includes a first surface 602 and a second surface 604. The working section 600 includes a first cutting edge portion 606 and a second cutting edge portion 608 extending toward the outer periphery of an axis. According to some embodiments, the first cutting edge portion 606 and / or the second cutting edge portion 608 may extend beyond the outer periphery. In some embodiments, the first surface 602 and the second surface 604 are positioned such that an angle between the first surface 602 and the second surface 604 is formed between 90 degrees and 180 degrees. In some embodiments, the first surface 602 and / or the second surface 604 are wholly or partially curved, convex, or angled.

[0052] The collecting portion 614 may be configured such that at least a portion of the collecting portion 614 may be located on the side of the working portion 600 opposite to at least a portion of the first surface 602 and / or the second surface 604. The collecting portion 614 is formed by a third surface 610 and a fourth surface 612. The third surface 610 may be located on the side of the working portion 600 opposite to the first surface 602, and the fourth surface 612 may be located on the side of the working portion 600 opposite to the second surface 604. In some embodiments, the collecting portion 614 is generally or substantially V-shaped.

[0053] In some embodiments, the first surface 602 and / or the second surface 604 are configured or shaped to perform the function of scooping or otherwise collecting material (e.g., bone or tissue) cut by the first cutting edge portion 606 and / or the second cutting edge portion 608. According to some embodiments, for example, as the working portion 600 rotates and the first cutting edge portion 606 and the second cutting edge portion 608 cut material (e.g., bone or tissue), the first surface 602 and / or the second surface 604 can scoop or otherwise collect the cut material. In some embodiments, one or more surfaces forming, opposite, surrounding, or adjacent to the first surface 602 and / or the second surface 604 are configured or shaped to perform the function of scooping or otherwise collecting material (e.g., bone or tissue) cut by the first cutting edge portion 606 and / or the second cutting edge portion 608. According to some embodiments, for example, a collecting portion 614 can be configured or shaped to perform the function of scooping or otherwise collecting material (e.g., bone or tissue) cut by the first cutting edge portion 606 and / or the second cutting edge portion 608. In some embodiments, one or more surfaces forming, opposite, surrounding, or adjacent to the first cutting edge portion 606 and / or the second cutting edge portion 608 are configured or shaped to perform the function of scooping or otherwise collecting material (e.g., bone or tissue) cut by the first cutting edge portion 606 and / or the second cutting edge portion 608.

[0054] Figure 8 A perspective view of another embodiment of a portion of the working section of a handheld surgical device is shown. The working section 700 includes a first surface 702 and a second surface 704. The working section 700 includes a first cutting edge portion 706 and a second cutting edge portion 708 extending toward the outer periphery of an axis. According to some embodiments, the first cutting edge portion 706 and / or the second cutting edge portion 708 may extend beyond the outer periphery. In some embodiments, the first surface 702 and the second surface 704 are positioned such that an angle between the first surface 702 and the second surface 704 is formed between 90 degrees and 180 degrees. In some embodiments, the first surface 702 and / or the second surface 704 are wholly or partially curved, convex, or angled.

[0055] The collecting portion 714 may be configured such that at least a portion of the collecting portion 714 may be located on the side of the working portion 700 opposite to at least a portion of the first surface 702 and / or the second surface 704. The collecting portion 714 is formed by a third surface 710 and a fourth surface 712. The third surface 710 may be located on the side of the working portion 700 opposite to the first surface 702, and the fourth surface 712 may be located on the side of the working portion 700 opposite to the second surface 704. In some embodiments, the collecting portion 714 is generally or substantially V-shaped. A first cutting edge portion 706 extends along the end of the first surface 702. A second cutting edge portion 708 extends along the second surface 704, which extends from the distal end of the first surface 702 toward and / or along the outer periphery of the axis.

[0056] In some embodiments, the first surface 702 and / or the second surface 704 are configured or shaped to perform the function of scooping or otherwise collecting material (e.g., bone or tissue) cut by the first cutting edge portion 706 and / or the second cutting edge portion 708. According to some embodiments, for example, as the working portion 700 rotates and the first cutting edge portion 706 and the second cutting edge portion 708 cut material (e.g., bone or tissue), the first surface 702 and / or the second surface 704 can scoop or otherwise collect the cut material. In some embodiments, one or more surfaces forming, opposite, surrounding, or adjacent to the first surface 702 and / or the second surface 704 are configured or shaped to perform the function of scooping or otherwise collecting material (e.g., bone or tissue) cut by the first cutting edge portion 706 and / or the second cutting edge portion 708. According to some embodiments, for example, a collecting portion 714 can be configured or shaped to perform the function of scooping or otherwise collecting material (e.g., bone or tissue) cut by the first cutting edge portion 706 and / or the second cutting edge portion 708. In some embodiments, one or more surfaces forming, opposite, surrounding, or adjacent to the first cutting edge portion 706 and / or the second cutting edge portion 708 are configured or shaped to perform the function of scooping or otherwise collecting material (e.g., bone or tissue) cut by the first cutting edge portion 706 and / or the second cutting edge portion 708.

[0057] Figure 9 An end view of another embodiment of a portion of the working section of a handheld surgical device is shown. The working section 800 includes a first surface 802. In some embodiments, the first surface 802 is wholly or partially curved, convex, or angled. The working section 800 includes a first cutting edge portion 804, a second cutting edge portion 806, and a third cutting edge portion 808 extending toward the outer periphery of an axis. According to some embodiments, one or more cutting edge portions 804, 806, 808 may extend beyond the outer periphery. The first cutting edge portion 804 extends along a first end or side of the first surface 802 along the working section 800. The second cutting edge portion 806 extends along a second end or side of the first surface along the working section 800. The third cutting edge portion 808 extends along a projection extending from the distal end of the first surface 802.

[0058] The first collection portion 814 may be configured such that at least a portion of the first collection portion 814 can be located on the side of the working portion 800 opposite to at least a portion of the first surface 802. The first collection portion 814 is formed by a second surface 810 and a third surface 812. In some embodiments, the first collection portion 814 is generally or substantially V-shaped. The angle formed between the second surface 810 and the third surface 812 is between 0 degrees and 90 degrees. In some embodiments, the angle formed between the second surface 810 and the third surface 812 is between 90 degrees and 180 degrees.

[0059] The second collecting portion 820 can be configured such that at least a portion of the second collecting portion 820 can be located on the side of the working portion 800 opposite to at least a portion of the first surface 802. The second collecting portion 820 is formed by a fourth surface 816 and a fifth surface 818. The second collecting portion 820 is generally or substantially V-shaped. The angle formed between the fourth surface 816 and the fifth surface 818 is between 90 degrees and 180 degrees. In some embodiments, the angle formed between the fourth surface 816 and the fifth surface 818 is between 0 degrees and 90 degrees.

[0060] The third cutting edge portion 808 is located at the end of the third surface 812 and the end of the fourth surface 816. According to some embodiments, for example, the third surface 812 and the fourth surface 816 may form a protrusion extending from the distal end of the first surface 802. The protrusion extends from the distal end of the first surface 802 at an angle between 0 degrees and 90 degrees. In some embodiments, the protrusion extends from the distal end of the first surface 802 at an angle between 90 degrees and 180 degrees. The top portion of the third cutting edge portion 808 may extend from the third surface 812, and the bottom portion of the third cutting edge portion 808 may extend from the fourth surface 816, such that the third cutting edge portion 808 extends along the length of the working portion 800.

[0061] In some embodiments, the first surface 802 is configured or shaped to perform the function of scooping or otherwise collecting material (e.g., bone or tissue) cut by the first cutting edge portion 804 and / or the second cutting edge portion 806 and / or the third cutting edge portion 808. According to some embodiments, for example, the first surface 802 can scoop or otherwise collect the cut material (e.g., bone or tissue) as the working portion 800 rotates and the first cutting edge portion 804, the second cutting edge portion 806, and the third cutting edge portion 808 cuts the material. In some embodiments, one or more surfaces forming, opposite, surrounding, or adjacent to the first surface 802 are configured or shaped to perform the function of scooping or otherwise collecting material (e.g., bone or tissue) cut by the first cutting edge portion 804 and / or the second cutting edge portion 806 and / or the third cutting edge portion 808. According to some embodiments, for example, the first collecting portion 814 may be configured or shaped to perform the function of scooping or otherwise collecting material (e.g., bone or tissue) cut by the first cutting edge portion 804 and / or the second cutting edge portion 806 and / or the third cutting edge portion 808. Additionally or alternatively, the second collecting portion 820 may be configured or shaped to perform the function of scooping or otherwise collecting material (e.g., bone or tissue) cut by the first cutting edge portion 804 and / or the second cutting edge portion 806 and / or the third cutting edge portion 808. In some embodiments, one or more surfaces forming, opposite, surrounding, or adjacent to the first cutting edge portion 804 and / or the second cutting edge portion 806 and / or the third cutting edge portion 808 are configured or shaped to perform the function of scooping or otherwise collecting material (e.g., bone or tissue) cut by the first cutting edge portion 804 and / or the second cutting edge portion 806 and / or the third cutting edge portion 808.

[0062] Figure 10 A perspective view of another embodiment of a portion of the working section of a handheld surgical device is shown. The working section 900 includes a first surface 902, a cutting edge portion 904, a second cutting edge portion 906, a third cutting edge portion 908, a third surface 910, a fourth surface 912, a first collection portion 914, a fifth surface 916, a sixth surface 918, and a second collection portion 920, wherein these elements are similar to Figure 9 Similar features shown and described. Figure 10 The embodiments shown are similar to Figure 9 The difference in the embodiment shown is that the protrusion may extend from the distal end of the first surface 902 in a grooved or curved configuration.

[0063] The third cutting edge portion 908 is located at the end of the fourth surface 912 and the end of the fifth surface 916. The fourth surface 912 and / or the fifth surface 916 may be curved or convex. According to some embodiments, for example, the fourth surface 912 and the fifth surface 916 may form a protrusion extending from the distal end of the first surface 902. The protrusion extends from the distal end of the first surface 902 at an angle between 0 degrees and 90 degrees. In some embodiments, the protrusion extends from the distal end of the first surface 902 at an angle between 90 degrees and 180 degrees. The top portion of the third cutting edge portion 908 may extend from the fourth surface 912, and the bottom portion of the third cutting edge portion 908 may extend from the fifth surface 916, such that the third cutting edge portion 908 extends along the length of the working portion 900 and forms a grooved cutting edge.

[0064] Figure 11 A schematic diagram of a portion of a handheld surgical device 1000 is shown. The distal portion 1002 of the handheld surgical device 1000 includes a housing 1004 surrounding a shaft 1006. The shaft 1006 includes and / or is connected to a working portion 1012. The working portion 1012 includes one or more cutting edges or cutting edge portions extending toward the outer periphery of the shaft. According to some embodiments, one or more cutting edges may also extend beyond the outer periphery. Thus, when the shaft 1006 rotates, the cutting edge portions rotate to perform cutting (e.g., bone, muscle, etc.). The shaft 1006 may include a grinding portion 1008 (i.e., the place where material is removed from the shaft 1006) or a counterweight portion disposed at the shaft 1006 to balance the working portion 1012 in a rotational manner. The housing 1004 includes a concave portion 1010. These elements are similar to Figure 1 Similar features to those shown and described in Figure 3. Figure 11 The embodiments shown are similar to Figure 1 The difference from the embodiment shown in Figure 3 is that the concave portion 1010 is flush (or substantially flush) with the housing 1004. In other words, the concave portion 1010 does not extend above or below the housing 1004.

[0065] The terminology used in this specification is intended to describe particular embodiments and not to be limiting. Unless otherwise expressly stated, the terms "a," "an," and "the" also include the plural forms.

[0066] aspect: Any of the following aspects may be combined with any one or more of the other aspects.

[0067] Aspect 1. A handheld surgical device, comprising: A shaft configured to rotate about a central axis by a motor, the shaft comprising: The assignment section includes: The centroid, which is offset from the central axis; and At least one cutting edge portion extends toward the outer periphery of the shaft.

[0068] Aspect 2, the handheld surgical device according to aspect 1, further includes a proximal portion and a distal portion, wherein the distal portion includes a housing that at least partially surrounds the shaft, and wherein the distal portion also includes a concave portion having a cutting edge.

[0069] Aspect 3, the handheld surgical device according to any one or more aspects of Aspect 1 and Aspect 2, wherein the shaft further includes a grinding portion configured to balance the working portion in a rotational manner.

[0070] Aspect 4. The handheld surgical device according to any one or more aspects 1 to 3, wherein the proximal portion includes a motor, wherein the working portion is accommodated within a concave portion when the motor is not energized.

[0071] Aspect 5. The handheld surgical device according to any one or more aspects 1 to 4, wherein when the motor is energized and started, the motor causes the shaft and the working part to rotate such that, as the working part rotates, at least a portion of the working part becomes exposed from the concave portion.

[0072] Aspect 6: A handheld surgical device according to any one or more aspects 1 to 5, wherein the proximal portion further includes a control mechanism and a power source.

[0073] Aspect 7: A handheld surgical device according to any one or more aspects 1 to 6, wherein a control mechanism, a power supply and a motor are connected together.

[0074] Aspect 8: A handheld surgical device according to any one or more aspects 1 to 7, wherein the power source is a battery.

[0075] Aspect 9: A handheld surgical device according to any one or more aspects 1 to 8, wherein a control mechanism controls the supply or non-supply of power from a power source to a motor.

[0076] Aspect 10. A handheld surgical device according to any one or more aspects of aspects 1 to 9, wherein at least one cutting edge portion is formed between two surfaces, wherein the first surface of the two surfaces has a curved shape extending along the length of the working portion, and the second surface of the two surfaces has a curved shape extending along the length of the working portion.

[0077] Aspect 11. A handheld surgical device according to any one or more aspects 1 to 10, wherein at least one cutting edge portion comprises a first cutting edge portion and a second cutting edge portion.

[0078] Aspect 12. A handheld surgical device according to any one or more aspects 1 to 11, wherein at least one cutting edge portion includes a first cutting edge portion, a second cutting edge portion and a third cutting edge portion.

[0079] Aspect 13: A handheld surgical device according to any one or more aspects 1 to 12, wherein the first cutting edge portion and the second cutting edge portion are substantially parallel.

[0080] Aspect 14. The handheld surgical device according to any one or more aspects of aspects 1 to 13, wherein the working portion further includes a first surface and a second surface, wherein a first cutting edge portion is located on the side of the working portion opposite to the second cutting edge portion, wherein the first cutting edge portion is located between the first surface and the second surface, and wherein the second cutting edge portion is located between the first surface and the second surface.

[0081] Aspect 15. The handheld surgical device according to any one or more aspects of aspects 1 to 14, wherein the working portion further includes a first surface and a second surface adjacent to the first surface, wherein the first surface and the second surface are positioned such that an angle between the first surface and the second surface is formed between 90 degrees and 180 degrees.

[0082] Aspect 16. A handheld surgical device according to any one or more aspects of aspects 1 to 15, wherein the working portion further includes a first curved surface, wherein a first cutting edge portion extends along an end of the first curved surface, and wherein a second cutting edge portion extends along a protrusion extending from a distal end of the first curved surface toward the outer periphery of the shaft.

[0083] Aspect 17. The handheld surgical device according to any one or more aspects 1 to 16, wherein at least one of the first cutting edge portion, the second cutting edge portion, and the third cutting edge portion includes a grooved cutting edge.

[0084] Aspect 18. A handheld surgical device according to any one or more aspects of aspects 1 to 17, wherein the working portion further includes a first curved surface, wherein a first cutting edge portion and a second cutting edge portion extend along opposite ends of the first curved surface, wherein a third cutting edge portion extends along a protrusion extending from a distal end of the first curved surface toward the outer periphery of the shaft.

[0085] Aspect 19. A handheld surgical device according to any one or more aspects 1 to 18, wherein the protrusion extends from the distal end of the first curved surface in a grooved configuration.

[0086] Aspect 20. A surgical device comprising: Electric motor; A shaft, wherein the shaft has a first end connected to an electric motor, the shaft being configured to rotate about a central axis by the electric motor; and The working part, wherein the working part is connected to the shaft at a second end opposite to the first end, The assignment includes: The center of mass, which is offset from the central axis of the axis in the radial direction, and At least one cutting edge portion, and First curved surface, At least one cutting edge portion is disposed at the end of the first curved surface, such that at least one cutting edge portion is disposed on the outer periphery of the working portion.

[0087] Regarding the foregoing description, it should be understood that changes may be made in details, particularly in the construction materials used and in the shape, size, and arrangement of components, without departing from the scope of this disclosure. The described embodiments are merely exemplary. Other and further embodiments may be devised without departing from the essential scope of this disclosure, the true scope and spirit of which are indicated by the claims.

Claims

1. A handheld surgical device, comprising: A shaft configured to rotate about a central axis by a motor, the shaft comprising: The work section includes: Centroid, which is offset from the central axis; and At least one cutting edge portion, the at least one cutting edge portion extending toward the outer periphery of the shaft.

2. The handheld surgical device according to claim 1 further includes a proximal portion and a distal portion, wherein, The distal portion includes a housing that at least partially surrounds the shaft, and wherein the distal portion further includes a concave portion having a cutting edge.

3. The handheld surgical device according to claim 1 or 2, wherein, The shaft also includes a grinding section configured to rotate and balance the working section.

4. The handheld surgical device according to claim 2, wherein, The proximal portion includes a motor, wherein the working portion is accommodated within the concave portion when the motor is not powered on.

5. The handheld surgical device according to claim 4, wherein, When the motor is powered on, the motor causes the shaft and the working part to rotate such that, as the working part rotates, at least a portion of the working part becomes exposed from the concave portion.

6. The handheld surgical device according to claim 4 or 5, wherein, The proximal portion also includes a control mechanism and a power supply.

7. The handheld surgical device according to claim 6, wherein, The control mechanism, the power supply, and the motor are connected together.

8. The handheld surgical device according to claim 6, wherein, The power source is a battery.

9. The handheld surgical device according to claim 6, wherein, The control mechanism controls whether or not power is supplied from the power source to the motor.

10. The handheld surgical device according to claim 1 or 2, wherein, The at least one cutting edge portion is formed between two surfaces, wherein a first surface of the two surfaces has a curved shape extending along the length of the working portion, and a second surface of the two surfaces has a curved shape extending along the length of the working portion.

11. The handheld surgical device according to claim 1 or 2, wherein, The at least one cutting edge portion includes a first cutting edge portion and a second cutting edge portion.

12. The handheld surgical device according to claim 1 or 2, wherein, The at least one cutting edge portion includes a first cutting edge portion, a second cutting edge portion, and a third cutting edge portion.

13. The handheld surgical device according to claim 11, wherein, The first cutting edge portion and the second cutting edge portion are approximately parallel.

14. The handheld surgical device according to claim 11, wherein, The working part further includes a first surface and a second surface, wherein the first cutting edge portion is located on the side of the working part opposite to the second cutting edge portion, wherein the first cutting edge portion is located between the first surface and the second surface, and wherein the second cutting edge portion is located between the first surface and the second surface.

15. The handheld surgical device according to claim 11, wherein, The working part further includes a first surface and a second surface adjacent to the first surface, wherein the first surface and the second surface are positioned such that an angle between the first surface and the second surface is formed between 90 degrees and 180 degrees.

16. The handheld surgical device according to claim 11, wherein, The working portion further includes a first curved surface, wherein the first cutting edge portion extends along an end of the first curved surface, and wherein the second cutting edge portion extends along a protrusion extending from a distal end of the first curved surface toward the outer periphery of the shaft.

17. The handheld surgical device according to claim 12, wherein, At least one of the first cutting edge portion, the second cutting edge portion, and the third cutting edge portion includes a grooved cutting edge.

18. The handheld surgical device according to claim 12, wherein, The working portion further includes a first curved surface, wherein the first cutting edge portion and the second cutting edge portion extend along opposite ends of the first curved surface, and wherein the third cutting edge portion extends along a protrusion extending from the distal end of the first curved surface toward the outer periphery of the shaft.

19. The handheld surgical device according to claim 18, wherein, The protrusion extends from the distal end of the first curved surface in a grooved configuration.

20. A surgical device comprising: Electric motor; A shaft, wherein the shaft has a first end connected to the electric motor, the shaft being configured to rotate about a central axis via the electric motor; and The working part, wherein the working part is connected to the shaft at a second end opposite to the first end. The work section includes: The centroid, which is offset from the central axis of the shaft in a radial direction along the central axis; At least one cutting edge portion; and First curved surface, The at least one cutting edge portion is disposed at the end of the first curved surface such that the at least one cutting edge portion is disposed at the outer periphery of the working portion.

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