Surgical saw blade

Abstract

A surgical saw blade is provided having an upper surface and a lower surface and including a first end having a right side edge and a left side edge, wherein the first end is configured to connect to a vibrating head of a powered saw. The saw blade also has a cutting end; and an elongated shank connecting the first end and the cutting end. The first end of the saw blade can be narrower than the shank, and a stop surface can connect the first end to the elongated shank. The stop surface is configured to engage the vibrating head of the powered saw in order to ensure proper positioning of the saw blade relative to the vibrating head. The elongated shank of the saw blade can have an elongated aperture through the shank, wherein the elongated aperture is sized and shaped to optimize the resonant frequency and / or dynamic stiffness of the saw blade. The cutting end of the saw blade can have a plurality of first teeth thereon, wherein each first tooth is mounted on a distal end of a tine. Each pair of adjacent tines is separated by a longitudinal slot, wherein a distal end of each longitudinal slot is bridged by a web connecting the corresponding pair of adjacent tines.

Description

Technical Field

[0001] The present invention relates generally to surgical saw blades for use with power saws. Background Technology

[0002] Surgical saws are widely used in performing bone surgeries. Many of these saws employ a long, thin blade with a toothed section at one end and a pivoting mount at the other end that allows for angular vibration. The angularly vibrating blade provides a wide cutting motion at the blade tip. In some cases, minimal cutting motion may be required to minimize trauma to the patient. Summary of the Invention

[0003] Given the need for improved surgical saw blades, a brief overview of various exemplary embodiments is presented. Some simplifications and omissions are made in the following overview to highlight and illustrate aspects of the various exemplary embodiments. Detailed descriptions of exemplary embodiments suitable for allowing those skilled in the art to make and use the concepts disclosed herein will be provided in later sections.

[0004] The various embodiments disclosed herein relate to a surgical saw blade having an upper surface and a lower surface. The saw blade may include a first end having a right edge and a left edge, the first end being configured to connect to a vibrating head of a power saw; a second end having a plurality of teeth thereon; and an elongated shank having a right edge and a left edge, wherein the elongated shank connects the first end and the second end. In various embodiments, the first end is narrower than the elongated shank, and a stop surface connects the first end to the elongated shank. The stop surface may be configured to engage the vibrating head to ensure proper positioning of the saw blade relative to the vibrating head.

[0005] In various embodiments, the surgical saw blade has a stop surface comprising a first stop surface connecting the right edge of a first end of the saw blade to the right edge of an elongated shank; and a second stop surface connecting the left edge of the first end to the left edge of the elongated shank. The first and second stop surfaces may be configured to engage a vibrating head.

[0006] In various embodiments, the first end of the saw blade has an upper surface and a lower surface, wherein a hole in the first end extends from the upper surface to the lower surface. The upper and lower surfaces of the first end of the saw blade can be configured to engage a first clamping surface and a second clamping surface on a power saw. The hole in the first end can be configured to engage a raised ridge on at least one of the first and second clamping surfaces.

[0007] The various embodiments disclosed herein relate to a surgical saw blade having an upper surface and a lower surface. The saw blade may include a first end having a right edge and a left edge, the first end being configured to connect to the vibrating head of a power saw; a second end having a plurality of teeth thereon; and an elongated shank having a right edge and a left edge, wherein the elongated shank connects the first end and the second end. In various embodiments, the elongated shank has an upper surface and a lower surface, wherein at least one hole in the shank extends from the upper surface to the lower surface. In various embodiments, the hole in the shank is configured to optimize the resonant frequency of the saw blade. The hole in the shank may be configured to ensure that the resonant frequency of the saw blade is greater than the vibration frequency of the vibrating head of the power saw.

[0008] The size and shape of at least one hole can be selected to ensure that the resonant frequency of the saw blade is greater than the vibration frequency of the saw during cutting operations, thereby ensuring that the saw blade does not resonate during use. In various embodiments, the hole is an elongated hole that can be configured to control the resonant frequency of the saw blade. In various embodiments, the hole in the shank can be an elliptical hole, a circular hole, or a polygonal hole. An elongated hole can also be selected to optimize the dynamic stiffness of the saw blade. In various embodiments, the hole in the shank can be a single large circular hole. Some embodiments disclosed herein may include a series of multiple small holes in the shank instead of a single circular or elongated hole.

[0009] In various embodiments, the surgical saw blade has an elongated shank with an upper surface and a lower surface, wherein a plurality of holes in the shank extend from the upper surface to the lower surface. These holes can be configured to ensure that the resonant frequency of the saw blade is greater than the vibration frequency of the vibrating head. The plurality of holes in the shank can be a plurality of circular holes, a plurality of polygonal holes, or a combination of circular and polygonal holes.

[0010] The various embodiments disclosed herein relate to a surgical saw blade having an upper surface and a lower surface. The saw blade may include a first end having a right edge and a left edge, the first end being configured to connect to a vibrating head of a power saw; a second end having a plurality of teeth thereon; and an elongated shank having a right edge and a left edge, wherein the elongated shank connects the first end and the second end. In various embodiments, a stop surface configured to engage the vibrating head connects the first end to the elongated shank. In various embodiments, the stop surface includes a first stop surface connecting the right edge of the first end of the saw blade to the right edge of the elongated shank; and a second stop surface connecting the left edge of the first end to the left edge of the elongated shank.

[0011] The surgical saw blade may also include at least three alignment holes located on an elongated shank. The at least three alignment holes on the elongated shank can be freely distributed on the saw blade in various ways. At least one alignment hole may be located near a first end of the saw blade, close to a stop surface. At least one alignment hole may be located near a second cutting end of the saw blade. A third alignment hole may be located near the first end of the saw blade, close to the second end of the saw blade, or on the shank between the first and second ends of the saw blade. At least two alignment holes may be located on one side of the saw blade, with the third hole located on the opposite side of the saw blade.

[0012] In various embodiments, the surgical saw blade includes at least three alignment holes located on an elongated shank, these alignment holes being distributed along the length of the saw blade or across the width of the saw blade. In various embodiments, the surgical saw blade includes at least two first alignment holes located on the elongated shank, each alignment hole being adjacent to a second end of the surgical saw blade.

[0013] In various embodiments, the surgical saw blade includes at least two first alignment holes on an elongated shank adjacent to a first stop surface and a second stop surface, and at least one second alignment hole on the elongated shank adjacent to a second end of the surgical saw blade.

[0014] The various embodiments disclosed herein relate to a surgical saw blade having:

[0015] A first end portion having a right edge and a left edge, the first end portion being configured to connect to the vibrating head of a power saw;

[0016] The second end portion has a plurality of teeth thereon;

[0017] An elongated handle connecting a first end and a second end; and

[0018] A stop surface connects the first end to the elongated shank. The stop surface can be configured to engage the vibrating head to ensure proper positioning of the saw blade relative to the vibrating head.

[0019] In various embodiments, the second end of the saw blade may have a planar upper surface and a planar lower surface, on which a plurality of first teeth are mounted. The second end of the saw blade may have a constant thickness. Alternatively, the second end of the saw blade may have a variable thickness, wherein slots and / or grooves in the second end of the saw blade are configured to carry away powder generated during the sawing operation from the teeth on the saw blade.

[0020] In various embodiments, the second end of the saw blade may have a plurality of first teeth thereon, each first tooth being mounted on the distal end of a tooth. In various embodiments, each pair of adjacent teeth is separated by a longitudinal slot extending from the upper surface of the saw blade to the lower surface of the saw blade, and the distal end of each longitudinal slot is bridged by a connecting plate connecting a corresponding pair of adjacent teeth. In various embodiments, each longitudinal slot is configured to carry away powder generated during the sawing operation from the first tooth.

[0021] In various embodiments, one or more longitudinal grooves extending partially through the thickness of the saw blade may be positioned between adjacent teeth, wherein the one or more longitudinal grooves are configured to carry away powder generated during the sawing operation from the teeth on the saw blade.

[0022] In various embodiments, the saw blade may further include at least two first alignment holes located on the elongated shank, each first alignment hole approaching a longitudinal slot. In various embodiments, each first alignment hole approaches a different longitudinal slot. In various embodiments, the surgical saw blade may further include at least one second alignment hole located on the elongated shank, approaching a stop surface that connects a first end of the saw blade to the elongated shank.

[0023] The various embodiments disclosed herein relate to a surgical saw blade. This saw blade may include:

[0024] A first end portion having an upper surface, a lower surface, and a hole extending from the upper surface to the lower surface, the first end portion being configured to connect to a vibrating head of a power saw;

[0025] The second end portion has a plurality of teeth thereon;

[0026] An elongated handle portion, which is connected to a second end; and

[0027] A stop surface connects the first end and the elongated shank, and the stop surface is shaped to engage a mating surface of the vibrating head. In various embodiments, the stop surface may be planar to engage a flat mating surface on the vibrating head. In various embodiments, the stop surface may be non-planar, such as curved, to engage a non-planar mating surface on the vibrating head.

[0028] In various embodiments, the upper and lower surfaces of the first end portion can be configured to engage a first clamping surface and a second clamping surface on the power saw; and the hole in the first end portion is configured to engage a raised ridge on at least one of the first and second clamping surfaces. The elongated shank portion can have an upper surface and a lower surface, wherein the elongated hole in the shank portion extends from the upper surface to the lower surface. The size of the elongated hole can be selected to optimize the dynamic stiffness of the saw blade, the resonant frequency of the saw blade, or both the dynamic stiffness and the resonant frequency of the saw blade. In various embodiments, the hole in the shank portion is configured to optimize the resonant frequency of the saw blade such that the resonant frequency of the saw blade is greater than the vibration frequency of the saw during cutting operations. In various embodiments, the surgical saw blade may also include at least two alignment holes located on the elongated shank portion, wherein a first alignment hole is adjacent to a second end portion of the saw blade, and a second alignment hole is adjacent to a stop surface.

[0029] The various embodiments disclosed herein relate to a surgical saw assembly, which includes:

[0030] a. A surgical saw blade having an upper surface and a lower surface, the upper surface and the lower surface having:

[0031] A first end portion, the first end portion having a right edge and a left edge;

[0032] The second end portion has a plurality of teeth thereon;

[0033] An elongated handle having a right edge and a left edge, wherein the elongated handle connects a first end and a second end; and

[0034] A stop surface that connects the first end to the elongated handle; and,

[0035] b. A handheld surgical saw handle, the handheld surgical saw handle comprising:

[0036] A vibrating head configured to vibrate the surgical saw blade laterally includes:

[0037] A first surface, configured to engage the right edge of a first end of a surgical saw;

[0038] A second surface, configured to engage the left edge of the first end of the surgical saw blade; and

[0039] A third surface, configured as an engagement stop surface; and

[0040] At least two clamping surfaces are configured to engage the first end of the saw blade;

[0041] The ridge may be positioned on at least one of the clamping surfaces, and the ridge is configured to engage a hole extending through a first end of the saw blade.

[0042] In various implementations, the surgical saw assembly includes:

[0043] a. A surgical saw blade, the surgical saw blade having:

[0044] A first end portion having an upper surface, a lower surface, and a hole extending from the upper surface to the lower surface, the first end portion being configured to connect to a vibrating head of a power saw;

[0045] The second end portion has a plurality of teeth thereon;

[0046] An elongated handle portion, which is connected to a second end; and

[0047] A stop surface, connecting the first end and the elongated handle, is shaped to engage the surface of the vibrating head; and

[0048] b. A handheld surgical saw handle, the handheld surgical saw handle comprising:

[0049] A vibrating head configured to vibrate the surgical saw blade laterally, and configured to engage the first end of the surgical saw blade and the stop surface of the surgical saw blade.

[0050] A first clamping surface is configured to engage the upper surface of a first end of the saw blade;

[0051] A second clamping surface, configured to engage the lower surface of the first end of the saw blade; and

[0052] An elevated ridge, located on at least one of a first clamping surface and a second clamping surface, is configured to engage a hole in a first end of the saw blade. Attached Figure Description

[0053] To better understand the various exemplary embodiments, refer to the accompanying drawings, in which:

[0054] Figure 1 and Figure 12 A top perspective view of the surgical saw blade disclosed herein is shown;

[0055] Figure 1A It shows Figure 1 The first end of the surgical saw blade is configured for attachment to a power saw;

[0056] Figure 1B It shows Figure 1 The second cutting end of the surgical saw blade;

[0057] Figure 2 and Figure 13 It shows Figure 1 Top plan view of the surgical saw blade;

[0058] Figure 3 and Figure 14 It shows Figure 1 Bottom plan view of the surgical saw blade;

[0059] Figure 4 It shows Figure 1 A front view of a surgical saw blade, showing the cutting end;

[0060] Figure 5 and Figure 15 It shows Figure 1 A rear front view of a surgical saw blade;

[0061] Figure 6 and Figure 16 It shows Figure 1 Right front view of a surgical saw blade;

[0062] Figure 7 and Figure 17 It shows Figure 1 Left front view of a surgical saw blade;

[0063] Figure 8 It shows along Figure 2 The direction of arrow 8 in the image is used to cut off the view. Figure 1 A three-dimensional cross-sectional view of a surgical saw blade, making features visible in or behind the plane of the cross-section;

[0064] Figure 9 and Figure 10 The vibrating head connected to the power saw is shown. Figure 1 Two views of the saw blade; and

[0065] Figure 11 A diagram shows how to ensure Figure 1 The alignment tool is used to correctly align the saw blade. Detailed Implementation

[0066] The specification and accompanying drawings illustrate the principles of the invention. Therefore, it will be understood that those skilled in the art will be able to design various layouts that, while not explicitly described or shown herein, embody the principles of the invention and are included within its scope. Furthermore, all examples set forth herein are explicitly intended for educational purposes to assist the reader in understanding the principles of the invention and the concepts proposed by the inventors to advance the prior art, and should be understood as not being limited to these specifically set forth examples and situations. Additionally, unless otherwise stated (e.g., “or” or “or alternatively”), the term “or” as used herein means non-exclusive (i.e., and / or). Furthermore, the various embodiments described herein are not necessarily mutually exclusive, as some embodiments may be combined with one or more other embodiments to form new embodiments.

[0067] Referring now to the accompanying drawings, where similar figures refer to similar components or steps, a wide range of aspects of various exemplary embodiments are disclosed. Figure 1 It has an upper surface 2 and a lower surface 3 ( Figure 2 A view of a surgical saw blade 1 (shown in the figure). The saw blade may include a first end 4 having a right edge 4a and a left edge 4b, wherein the first end is configured to connect to the vibrating head of a power saw. A second cutting end 6 of the saw blade has a plurality of teeth 5 thereon, including internal teeth 5a and external teeth 5b, wherein the teeth 5b are located at the right and left edges of the second end. An elongated shank 7 connects the first end and the second end. The shank 7 may have a right edge 7a and a left edge 7b, respectively. In various embodiments, the first end 4 of the saw blade 1 is narrower than the elongated shank 7, and a stop surface 8 is located at the junction of the first end and the elongated shank. The stop surface 8 may be configured to engage the vibrating head of the power saw to ensure proper positioning of the saw blade relative to the vibrating head.

[0068] In various embodiments, the elongated shank 7 has an upper surface and a lower surface, wherein an elongated hole 10 in the shank 7 extends from the upper surface to the lower surface. The elongated hole 10 can be configured to control the resonant frequency of the saw blade 1. The size of the elongated hole 10 can also be selected to optimize the dynamic stiffness of the saw blade 1. According to the formula, the resonant frequency W depends on the mass M and the stiffness K:

[0069]

[0070] Therefore, the resonant frequency can be increased by reducing mass and / or increasing stiffness. Because the presence of hole 10 reduces the overall mass of saw blade 1, it helps to increase the resonant frequency of the saw blade. The shape of hole 10 can affect the stiffness of the saw blade. The support 11 in the shank 7 connects the second end of the saw blade to the blade. The thickness of the support 11 depends on the width of hole 10. Changing the shape of hole 10 while keeping its area constant, thus keeping the blade mass constant, affects the resonant frequency. If hole 10 is wider, the width of support 11 can be smaller, thereby reducing the blade stiffness K and lowering the blade's resonant frequency. Reducing the width of hole 10 without changing its area increases the width of support 11, thereby increasing the stiffness K of blade 1 and thus increasing the resonant frequency.

[0071] Furthermore, changing the area of ​​the hole 10 alters the blade mass and affects the resonant frequency; specifically, increasing the area of ​​the hole 10 decreases the mass M and increases the resonant frequency. The resonant frequency can be optimized by balancing the area of ​​the hole 10 and the width of the support bar 11.

[0072] The various embodiments disclosed herein relate to a surgical saw blade having an upper surface and a lower surface, the surgical saw blade having:

[0073] A first end portion having a right edge and a left edge, wherein the first end portion is configured to connect to the vibrating head of a power saw operating at a designed vibration frequency;

[0074] The second end portion has a plurality of teeth thereon; and

[0075] An elongated shank connects a first end and a second end. In various embodiments, the elongated shank has an upper surface and a lower surface, wherein at least one hole in the shank extends from the upper surface to the lower surface, and the shape and size of the hole in the shank are configured to optimize the resonant frequency of the saw blade. The hole in the shank can be configured to ensure that the resonant frequency of the saw blade is greater than the vibration frequency of the vibrating head of the power saw, thereby ensuring that the saw blade does not resonate during use. In various embodiments, the hole may be a single elongated hole. In various embodiments, the hole in the shank may be an elliptical hole, a circular hole, or a polygonal hole. In various embodiments, the hole in the shank may be a single large circular hole. Some embodiments disclosed herein may include a series of multiple small holes in the shank instead of a single circular or elongated hole.

[0076] In various embodiments, the surgical saw blade has an elongated shank with an upper surface and a lower surface, wherein a plurality of holes in the shank extend from the upper surface to the lower surface. These holes can be configured to ensure that the resonant frequency of the saw blade is greater than the vibration frequency of the vibrating head. The plurality of holes in the shank can be a plurality of circular holes, a plurality of polygonal holes, or a combination of circular and polygonal holes.

[0077] In various embodiments, the surgical saw blade 1 has a stop surface 8, which includes a first stop surface 8a connecting the right side edge 4a of the first end 4 of the saw blade to the right side edge 7a of the elongated shank 7, and a second stop surface 8b connecting the left side edge 4b ​​of the first end 4 to the left side edge 7b of the elongated shank 7. The first and second stop surfaces can be configured to engage the vibrating head of a power saw. Figure 1A In the various embodiments shown, the second stop surface 8b and the left edge 4b ​​may intersect at an angle θ to form an angled surface on the left side of the saw blade, where θ can be an acute, right, or obtuse angle. Similarly, the first stop surface 8a and the right edge 4a may intersect at a corresponding angle θ to form an angled surface on the right side of the saw blade. The right and left angled surfaces formed by the stop surfaces 8a and the side surfaces of the first end of the saw blade are configured to engage corresponding angled surfaces on the vibrating head of the power saw. When the right stop surface 8a and the left stop surface 8b engage the vibrating head, the stop surfaces prevent the saw blade from moving further longitudinally into the vibrating head, thereby ensuring proper positioning of the saw blade. In various embodiments, the stop surfaces 8a and 8b may satisfy the corresponding edges 4a and 4b at a defined angle θ, where the stop surfaces 8a and 8b may be planar surfaces or curved surfaces. The angle θ may be an acute, obtuse, or right angle. If the stop surfaces 8a and 8b are planar surfaces, they are configured to engage corresponding planar surfaces on the vibrating head of the power saw. If the stop surfaces 8a and 8b are curved surfaces, they are configured to engage corresponding curved surfaces on the vibrating head of the power saw. In various embodiments, the intersections between the stop surfaces 8a and 8b and the corresponding edges 4a and 4b can be rounded, wherein the stop surfaces 8a and 8b can be planar or curved surfaces. In embodiments where the intersections between the stop surfaces and the corresponding edges 4a and 4b can be rounded, a line A tangent to the stop surfaces 8a and 8b at a point adjacent to the intersection can intersect the edges 4a and 4b at a defined angle θ, such as... Figure 1A As shown.

[0078] like Figure 1A and Figure 2 As shown, the first end portion 4 of the saw blade 1 may have an upper surface and a lower surface, wherein a hole 9 in the first end portion extends from the upper surface to the lower surface. The upper and lower surfaces of the first end portion of the saw blade may be configured to engage a first clamping surface and a second clamping surface on the power saw, as will be further described later in this disclosure. The hole in the first end portion may be configured to engage a raised ridge on at least one of the first and second clamping surfaces.

[0079] The various embodiments disclosed herein relate to a surgical saw blade having an upper surface and a lower surface. The saw blade may include a first end having a right edge and a left edge, the first end being configured to connect to a vibrating head of a power saw; a second end having a plurality of teeth thereon; and an elongated shank having a right edge and a left edge, wherein the elongated shank connects the first end and the second end. In various embodiments, at least one stop surface configured to engage the vibrating head connects the first end to the elongated shank. In various embodiments, the stop surface may include a first stop surface and a second stop surface located on opposite edges of the first end of the saw blade, wherein the first stop surface and the second stop surface together connect the first end of the saw blade to the elongated shank.

[0080] A surgical saw blade may include at least three alignment holes located on a slender shank. These at least three alignment holes on the slender shank can be freely distributed on the saw blade in various ways. Figure 1A In the various embodiments shown, at least one alignment hole 12 may be accessible to at least one stop surface 8a or 8b. At least one alignment hole 13 may be positioned near the second end 6 of the saw blade, close to the cutting edge, such as... Figure 1B As shown. At least one alignment hole may be located near the first end of the saw blade, close to the stop surface, and at least one alignment hole may be located near the second cutting end of the saw blade. A third alignment hole may be located near the first end of the saw blade, close to the second end of the saw blade, or on the shank between the first and second ends of the saw blade. At least two alignment holes may be located on one side of the saw blade, with the third hole located on the opposite side of the saw blade. Figure 1A In the various embodiments shown, the alignment hole 12 can be accessible to each of the stop surfaces 8a and 8b.

[0081] In various embodiments, the surgical saw blade includes at least three alignment holes located on an elongated shank, the alignment holes being distributed along the length of the saw blade or across the width of the saw blade. In various embodiments, the surgical saw blade includes at least two first alignment holes located on the elongated shank, each alignment hole protruding from a second end of the surgical saw blade. In various embodiments, the surgical saw blade includes at least two first alignment holes located on the elongated shank, the at least two first alignment holes protruding from a first stop surface and a second stop surface, and at least one second alignment hole located on the elongated shank, the at least one second alignment hole protruding from a second end of the surgical saw blade.

[0082] Figure 1BA cutting end 6 of a surgical saw blade is shown. The cutting end 6 has a plurality of first teeth 5a mounted thereon. Each first tooth 5a is mounted on the distal end of a tooth 14. Each pair of adjacent teeth can be separated by longitudinal slots 15, wherein the distal ends of each longitudinal slot 15 are bridged by connecting plates 16 connecting a corresponding pair of adjacent teeth. When the saw blade vibrates laterally by the power saw, the surface of the connecting plate 16 is recessed from the upper and / or lower surface of the saw blade 1, thereby allowing sawdust and flakes generated during the sawing operation to move around the connecting plate 16 into the longitudinal slots 16. The longitudinal slots 16 allow cutting material generated at the tip of the cutting edge to move away from the teeth 5a at the teeth, thereby preventing the accumulation of cutting material at the cutting edge during the sawing operation. Figure 1B In the various embodiments shown, at least one alignment hole 13 can be accessible to the cutting end 6 of the surgical saw blade 1, for example, near the teeth 5 or the longitudinal slot or groove 15. Figure 1A In the various embodiments shown, at least two alignment holes 13 can be accessed to the cutting end 6 of the surgical saw blade 1.

[0083] In various embodiments, the cutting end 6 of the surgical saw blade may have a planar upper surface and a planar lower surface, on which a plurality of first teeth are mounted. The second end of the saw blade may have a constant thickness, wherein there are no grooves 15 or other features. Alternatively, the second end of the saw blade may have a variable thickness, wherein a slot 15 extends through the entire thickness of the cutting end 6. Alternatively, the second end of the saw blade may have teeth separated by a plurality of grooves, wherein each groove partially extends through the entire thickness of the cutting end 6. The slots 15 and / or grooves in the second end of the saw blade are configured to remove powder generated during the sawing operation from the teeth on the saw blade. In various embodiments, any adjacent pairs of teeth on the second cutting end of the saw blade may be separated by one or more longitudinal grooves.

[0084] The connecting plate 16 can be thinner than the total thickness of the saw blade, allowing the cut material to easily travel above and / or below the connecting plate 16 into the longitudinal slot 15. The left and right edges of the cutting end 6 can have serrations 14a. Serrations 14a can have a single tooth and are structurally similar to serrations 14, except that they have adjacent serrations only on one inner side. Alternatively, serrations 14a can have increased thickness relative to the other serrations 14, and each serration can have two teeth at its distal end. In various embodiments, each serration 14a can have an outer tooth 5b and an inner tooth 5a, wherein each tooth 5a can be positioned at the end of the serration 14a located at the entrance of the longitudinal slot 15. The teeth 5a at the ends of serrations 14a can be connected to the teeth 5a on adjacent serrations 14 via the connecting plate 16. The outer tooth on each serration 14a is a tooth 5b, wherein the tooth 5b is adjacent to the tooth 5a on the serration 14a. In various embodiments, the teeth 5a and 5b at the ends of the serration 14a may or may not be separated by a longitudinal slot or groove (such as groove 14). In various embodiments, the outer serration 14a and the inner serration 14 each have a width similar to that of a single tooth. In various embodiments, the outer serration 14a has two teeth and may be two to six times wider than the inner serration 14, or about four times wider. The increased thickness of the serration 14a can increase the rigidity of the cutting end 6 of the saw blade 1. Figure 1B As shown, the teeth 5 can be asymmetrical, wherein each tooth 5a and 5b can have an outer cutting edge 5c and an inner cutting edge 5d, wherein the edges 5c and 5d intersect at an acute angle, and wherein the outer cutting surface 5c is closer to the edge of the saw blade 1 than the inner cutting edge 5d. In various embodiments, the outer edge 5c of each tooth 5a and 5b can be parallel to or nearly parallel to the edge of the saw blade 1, forming an angle β with the edge of the saw blade, wherein β is between 160° and 180°. In various embodiments, the inner edge 5d of each tooth 5a and 5b can form an angle α with the corresponding outer edge 5c between 30° and 45°. In various embodiments, the teeth 5 can each be asymmetrical about a line parallel to the edge of the saw blade 1. In various embodiments, the saw blade 1 can include a combination of symmetrical and asymmetrical teeth.

[0085] Figure 2 and Figure 3 They are shown respectively Figure 1 Top and bottom plan views of the surgical saw blade. Figure 2 and Figure 3 The relationship between the stop surfaces 8a and 8b, configured for attachment to the power saw, and the edges of the shank 7 and the first end 4 is seen. The elongated shank 7 typically extends from the stop surfaces 8a and 8b to the alignment hole 13. The cutting end of the saw blade can be considered to extend from the alignment hole 13 to the tips of the teeth 5a and 5b.

[0086] Figure 4 A front view of the cutting end 6 of a surgical saw blade 1 is shown. Two asymmetrical teeth 5b are present at the outer edge of the cutting end 6. Each asymmetrical tooth 5b may include an outer cutting edge 5c and an inner cutting edge 5d, the outer cutting edge being parallel to or nearly parallel to the edge of the saw blade 1. The inner cutting edge 5d may form an acute angle with a line parallel to the edge of the saw blade 1. The inner tooth 5a may also be asymmetrical, wherein the outer cutting edge 5c is nearly parallel to the edge of the saw blade 1, and the inner cutting edge 5d forms an acute angle with the edge of the saw blade 1. The saw blade 1 may have a plane of symmetry along its longitudinal axis, such that the tooth 5 on the left side of the cutting end 6 may be a mirror image of the corresponding tooth on the right side. If such a plane of symmetry exists, each tooth 5a and each tooth 5b has the same width on the upper surface of the cutting end 6 and the same width on the lower surface of the cutting end 6, wherein the widths at the upper and lower surfaces of the cutting edge may be the same or different. Alternatively, the cutting end 6 may have double rotational symmetry when rotated 180° about the longitudinal axis of the saw blade 1.

[0087] If the cutting edge has double rotational symmetry, all teeth can have a constant width from the upper surface of the cutting edge 6 to the lower surface of the cutting edge 6. Alternatively, if double rotational symmetry exists, the width of each tooth 5 on the right side of the saw blade 6 can change from a first selected width at the upper surface of the cutting edge 6 to a second selected width at the lower surface of the cutting edge 6. To maintain rotational symmetry, the width of each tooth 5 on the left side of the saw blade 6 can change from the second selected width at the upper surface of the cutting edge 6 to the first selected width at the lower surface of the cutting edge 6. Figure 4 The cut end 6 with rotational symmetry is shown, wherein the teeth 5a on the cut end 6 are:

[0088] The upper surface on the right side of the cut end 6 is narrower than the lower surface; and

[0089] The lower surface on the left side of the cut end 6 is narrower than the upper surface.

[0090] If there is a plane of symmetry or rotational symmetry with respect to saw blade 1, then the inner cutting edges 5d of corresponding teeth on opposite sides of the cutting end 6 face each other. Between any two adjacent teeth 5a, there is a longitudinal slot 15, the opening of which is located at... Figure 4 As can be seen, the opening of the longitudinal slot 15 is in... Figure 4 As can be seen, the opening of each slot 15 is partially covered by a connecting plate 16. Each connecting plate 16 connects two cusps carrying adjacent teeth 15a and prevents relative movement between adjacent teeth 15a by keeping the cusps separated by a fixed distance.

[0091] Figure 5A front view of the first end 4 of the surgical saw blade 1 is shown, wherein end 4 is configured for attachment to a power saw. Figure 5 As shown, the stop surface 8a connects the right edge 4a of the first end 4 of the saw blade to the right edge 7a of the elongated shank 7; and the stop surface 8b connects the left edge 4b ​​of the first end 4 to the left edge 7b of the elongated shank 7.

[0092] Figure 5 and Figure 6 The left and right front views of the surgical saw blade 1 are shown.

[0093] Figure 8 It shows Figure 1 Saw blade 1 from Figure 2 A three-dimensional cross-sectional view viewed in the direction of arrow 8. The surgical saw blade 1 has a first end 4 configured to connect to the vibrating head of a power saw; and a second cutting end 6 having multiple teeth thereon, which includes... Figure 8 The internal teeth 5a shown; and the elongated shank 7 connecting the first end 4 and the cutting end 6. (See example...) Figure 8 As shown, the first end 4 of the saw blade 1 may have a hole 9 extending from the upper surface to the lower surface of the saw blade in the first end. In various embodiments, the elongated shank 7 has at least one hole 10 extending from the upper surface to the lower surface of the shank 7. The hole 10 may be configured to control the resonant frequency of the saw blade 1. In various embodiments, the shape and size of the hole 10 are configured to ensure that the resonant frequency of the saw blade 1 is higher than the vibration frequency of the saw blade during sawing operations. In various embodiments, the saw blade 1 is configured to be attached to a vibrating surgical saw head, wherein the hole 10 is configured to ensure that the resonant frequency of the saw blade 1 is higher than the vibration frequency of the saw head. When observing Figure 9 In a cross-sectional view, the hole 10 can be seen in the foreground, wherein the rear edge of the elongated hole 10 defines the inner edge of the support 11. The support 11 in the shank 7 is visible at the rear surface of the elongated hole 10. Each tooth 5a is adjacent to the opening of at least one longitudinal slot 15, wherein adjacent longitudinal slots 15 are connected by a connecting plate 16.

[0094] In various embodiments, the hole 10 in the handle can be a single elongated hole, a single elliptical hole, or a single large circular hole. Some embodiments disclosed herein may include a series of multiple small holes 10 in the handle, instead of a single circular, elliptical, or elongated hole. In some embodiments including a series of multiple small holes 10 in the handle, the small holes 10 may each have the same geometry; for example, the series of small holes may be a series of circular holes, a series of elliptical holes, or a series of polygonal holes. In some embodiments including a series of multiple small holes in the handle, the small holes 10 may have different geometries; for example, a series of circular holes combined with polygonal holes or a series of square holes combined with rectangular or parallelogram holes.

[0095] Figure 9 The first end 4 of the saw blade 1 is shown, mounted in the handle 20 of a handheld surgical saw of a power saw. The power saw handle 20 includes two clamping surfaces 21, and may include an upper clamping surface 22 and a lower clamping surface 23, respectively. The upper clamping surface 22 may be the lower surface of the vibrating head 28 of the power saw handle 20. The lower clamping surface 23 may be mounted on a clamping sleeve 27, wherein the clamping sleeve 27 can be raised or lowered independently of the vibrating head 28. Figure 9 In this configuration, the clamping sleeve 27 can be lowered relative to the clamping surface 22 to increase the gap between the clamping surfaces 22 and 23 and allow the first end 4 of the saw blade 1 to be inserted therebetween. The first end 4 of the saw blade 1 can then be clamped between the clamping surfaces 22 and 23 by raising the clamping sleeve 27 relative to the clamping surface 22.

[0096] In various embodiments, the first hole 26 extends through the vibratory head 28 and the upper clamping surface 22. A corresponding hole 25 extends into the lower clamping surface 23, such that holes 25 and 26 are aligned with each other. When the saw blade 1 is correctly inserted into the vibratory saw, between the clamping surfaces 21, the hole 9 in the saw blade aligns with each of the holes 25 and 26 in the power saw handle 20. A pin 26A can be installed in the hole 26 in the vibratory head 28 and can pass through the hole 9 in the saw blade in the direction of arrow A and enter the hole 25 in the clamping sleeve 27. Thus, the pin 26a secures the saw blade 1 in the power saw handle 20 to prevent the saw blade 1 from detaching from the handle 20.

[0097] In various embodiments, the first hole 26 extending through the vibrating head 28 and the corresponding hole 25 extending into the lower clamping surface 23 may each have a common radius r1, which is approximately equal to the radius of the pin 27. In various embodiments, the hole 9 in the saw blade 1 may have a radius r2 greater than r1. In various embodiments, at least one of the upper clamping surface 22 and the lower clamping surface 23 has a ridge 24 thereon, wherein the ridge 24 has an outer diameter r2 and a width w, where w = r2 - r1. Thus, the ridge has an outer edge configured to engage the hole 9 on the saw blade 1. The ridge has an outer edge configured to engage the pin 26a. When the vibrating head 28 vibrates the saw blade 1, the ridge 24 prevents the saw blade 1 from moving relative to the clamping surface 21.

[0098] Figure 10 Is Figure 9The arrow 10 in the diagram is directed along the plane of the lower clamping surface 23, showing a view of the saw blade 1 mounted in the power saw handle 20. The first end 4 is positioned such that the edges 4a and 4b of the first end contact the opposing contact surface 28c of the vibrating head 28. The vibrating head 28 is configured to vibrate the saw blade laterally from right to left via the movement of the planar contact surface 28c. The vibrating head does not have a pivotal connection to the blade, such that the lateral movement of the saw blade at the shank 7 near the vibrating head 28 is similar to that of the cutting end 6 of the saw blade 1. Figure 10 The amplitude of the lateral motion (not shown in the figure).

[0099] The first stop surface 28a on the vibrating head 28 contacts the stop surface 8a on the saw blade 1. The second stop surface 28b on the vibrating head 28 contacts the stop surface 8b on the saw blade 1. In various embodiments, the stop surfaces 28a and 28b of the vibrating head 28, which may be curved or planar, are each configured to mate with the corresponding stop surface 8a or 8b. The stop surfaces 8a and 8b on the saw blade 1 can each make direct surface-to-surface contact with the stop surfaces 28a or 28b on the vibrating head 28. As described above, the ridge 24 is fitted into the hole 9 on the saw blade 1.

[0100] Figure 11 A saw blade 1 is shown in combination with a surgical saw 29, wherein the surgical saw 20 includes a barrel 30, a handle 31, a trigger 32, and a vibrating head 28. The saw blade 1 is connected to the surgical saw 29 via a clamping sleeve 27. A cap 39 is mounted on the cutting end of the saw blade 1. A saw array 33 with multiple markers 34 is mounted to the surgical saw 29. Figure 11 The diagram also shows positioning markers 35, which include a positioning array 36 with a plurality of markers 37 and a pointer 38 with a sterile pointer tip. The sterile pointer tip on the pointer 38 is fitted into one of the alignment holes 12 and 13 on the saw blade 1. The markers 34 and 37 are then imaged with a camera and used to determine the precise position of the positioning array 36 relative to the saw array 33. Since the length of the pointer 38 is known, this allows the position of the saw blade 1 relative to the saw array 33 to be determined, thereby allowing the user to determine the position of the saw blade 1 relative to the surgical saw 29. In various embodiments, the sterile pointer tip on the pointer 38 may be individually positioned in two or all three of the alignment holes 12 and 13 on the saw blade 1. For each alignment hole 12 and 13, the markers 34 and 37 can be used to determine the precise position of the positioning array 36 relative to the saw array 33 at each alignment hole, thereby allowing the position of the saw blade 1 relative to the saw array 33 to be determined at multiple points, enabling the user to determine the cutting plane of the saw blade 1.

[0101] Although various embodiments have been described with reference to certain aspects, it should be understood that the subject matter disclosed herein can have other embodiments, and its details can be modified in various ways. It will be apparent to those skilled in the art that variations and modifications can be made while maintaining the spirit and scope of this disclosure. Therefore, the foregoing disclosure, specification, and drawings are for illustrative purposes only and do not limit the invention in any way, which is defined only by the claims.

Claims

1. A surgical saw blade having an upper surface and a lower surface, the saw blade comprising: The proximal end has a right edge and a left edge, and the proximal end is configured to connect to the vibrating head of the power saw; The distal end has a plurality of sharp teeth; An elongated shank having a right edge and a left edge, wherein the elongated shank connects the proximal end and the distal end of the saw blade; A stop surface that connects the proximal end to the elongated handle; The stop surface is configured to engage the vibrating head to ensure proper positioning of the saw blade relative to the vibrating head, wherein: The proximal end of the saw blade is narrower than the elongated shank. The distal end of the saw blade has a plurality of first teeth thereon. Each first tooth is mounted on the distal end of the corresponding cusp. Each pair of adjacent cusps is separated by a longitudinal slot, and The distal end of each longitudinal slot is bridged by a connecting plate that connects a corresponding pair of adjacent teeth, wherein the connecting plate does not bridge the proximal end of each longitudinal slot.

2. The surgical saw blade according to claim 1, wherein, The stop surface forms an acute angle θ with the right edge, left edge, or both the right edge and left edge of the proximal end.

3. The surgical saw blade according to claim 1, wherein, The stop surface includes: A first stop surface connects the right edge of the proximal end to the right edge of the elongated handle; A second stop surface connects the left edge of the proximal end to the left edge of the elongated handle; and The first stop surface and the second stop surface are configured to engage the vibrating head.

4. The surgical saw blade according to claim 3, further comprising at least two first alignment holes located on the elongated shank, the at least two first alignment holes being adjacent to the first stop surface and the second stop surface.

5. The surgical saw blade according to claim 1, wherein: The proximal end has an upper surface and a lower surface, wherein the hole in the proximal end extends from the upper surface to the lower surface; The upper surface and the lower surface are configured to engage the first clamping surface and the second clamping surface on the power saw; and The hole in the proximal end is configured to engage a raised ridge on at least one of the first clamping surface and the second clamping surface.

6. The surgical saw blade according to claim 1, wherein, The elongated handle has an upper surface and a lower surface, wherein a hole in the elongated handle extends from the upper surface to the lower surface.

7. The surgical saw blade according to claim 6, wherein, The hole in the elongated shank is configured to ensure that the resonant frequency of the surgical saw blade is greater than the vibration frequency of the vibrating head.

8. The surgical saw blade according to claim 6, wherein, The hole in the elongated handle is an elongated hole, an elliptical hole, a circular hole, or a polygonal hole.

9. The surgical saw blade according to claim 1, wherein, The elongated shank has an upper surface and a lower surface, wherein a plurality of holes in the elongated shank extend from the upper surface to the lower surface, the plurality of holes being configured to ensure that the resonant frequency of the surgical saw blade is greater than the vibration frequency of the vibrating head.

10. The surgical saw blade according to claim 9, wherein, The plurality of holes in the elongated handle are a plurality of circular holes, a plurality of polygonal holes, or a combination of circular holes and polygonal holes.

11. The surgical saw blade of claim 9, further comprising at least one second alignment hole located on the elongated shank, the at least one second alignment hole being adjacent to the distal end of the surgical saw blade.

12. The surgical saw blade of claim 1, further comprising at least three alignment holes located on the elongated shank, the alignment holes being distributed along the length or across the width of the surgical saw blade.

13. The surgical saw blade of claim 1, further comprising at least two alignment holes located on the elongated shank, each alignment hole being adjacent to the distal end of the surgical saw blade.

14. The surgical saw blade according to claim 1, wherein, The elongated handle has an upper surface and a lower surface, wherein an elongated hole in the elongated handle extends from the upper surface to the lower surface.

15. The surgical saw blade according to claim 14, wherein, The size of the elongated hole is selected to ensure that the resonant frequency of the surgical saw blade is greater than the vibration frequency of the vibrating head.

16. The surgical saw blade of claim 1, further comprising at least three alignment holes located on the elongated shank, wherein a first alignment hole is adjacent to a longitudinal slot and a second alignment hole is adjacent to the stop surface.

17. A surgical saw assembly, the surgical saw assembly comprising, in combination: The surgical saw blade according to claim 1; and A handheld surgical saw handle, the handheld surgical saw handle comprising: A vibrating head configured to vibrate the surgical saw blade laterally, the vibrating head comprising: A first surface, configured to engage the right edge of the proximal end of the surgical saw blade; A second surface, configured to engage the left edge of the proximal end of the surgical saw blade; and A third surface, the third surface being configured as an engagement stop surface; and At least two clamping surfaces, said at least two clamping surfaces being configured to engage the proximal end of the surgical saw blade; and At least one of the clamping surfaces includes a ridge configured to engage a hole extending through the proximal end of the surgical saw blade.

18. A surgical saw assembly, the surgical saw assembly being assembled in a modular manner. include ： According to claim 1, the surgical saw blade, wherein, The proximal end of the surgical saw blade includes a hole that extends from the upper surface of the surgical saw blade to the lower surface of the surgical saw blade; and A handheld surgical saw handle, the handheld surgical saw handle comprising: A vibrating head configured to vibrate the surgical saw blade laterally, the vibrating head being configured to engage the proximal end of the surgical saw blade and the stop surface of the surgical saw blade. A first clamping surface, the first clamping surface being configured to engage the upper surface of the proximal end of the surgical saw blade; A second clamping surface, configured to engage the lower surface of the proximal end of the surgical saw blade; and An elevated ridge, located on at least one of the first clamping surface and the second clamping surface, is configured to engage a hole in the proximal end of the surgical saw blade.

Images