Saw head of a medical reciprocating saw

Abstract

The utility model discloses a saw head of a medical reciprocating saw, relates to the technical field of reciprocating saws, and is applied to a reciprocating saw body. The front end of the reciprocating saw body is transmission-connected with a mounting seat, a mounting column is movably arranged on the inner side of the mounting seat, a first inclined portion is arranged at the inner end edge of the mounting column, an inclined groove is arranged at the middle part of the outer side of the mounting column, an extrusion plate is arranged inside the side wall of the mounting seat, a second inclined portion and a third inclined portion are arranged on both sides of one end of the extrusion plate, an inclined panel is arranged on the end face of the extrusion plate, a spring is arranged on one side of the inclined panel, a driving ring is arranged on the outer side of the mounting seat, the extrusion plate can reciprocate along a straight line, the driving ring reciprocates along the axis direction of the mounting seat, and a saw blade is tightly connected to the middle part of the outer end of the mounting column. The utility model stably installs the saw blade, ensures that the saw blade will not fall off or loosen during movement, and thus ensures the normal progress of the operation.

Description

Technical Field

[0001] The utility model relates to the technical field of reciprocating saws, in particular to a saw head of a medical reciprocating saw. Background Art

[0002] The medical reciprocating saw is a common surgical device in orthopedics, including a main unit and a saw head. The saw head includes a rotating connecting piece, a reciprocating rod and a saw blade. The saw blade is connected to the reciprocating rod. The rotating connecting piece rotates when driven by a motor. The rotating connecting piece drives the reciprocating rod to perform reciprocating motion through transmission components such as a bevel gear set, thereby driving the saw blade to perform reciprocating motion to cut bone tissue.

[0003] The saw blades of existing medical reciprocating saws are usually detachably connected, and the saw blades usually use a spring and a locking pin. This method uses the elasticity of the spring to keep the saw blade locked, which is highly dependent on the spring and is unstable, easily affecting the normal progress of the operation.

[0004] In view of the above problems, the utility model provides a saw head of a medical reciprocating saw. Utility Model Content

[0005] The utility model aims to provide a saw head of a medical reciprocating saw, stably mounting a saw blade to ensure that the saw blade will not fall off or become loose during movement, thereby ensuring the normal progress of the operation, thereby solving the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a saw head of a medical reciprocating saw, which is applied to a reciprocating saw body, wherein the front end of the reciprocating saw body is transmission-connected with a mounting seat, a mounting column is movably arranged on the inner side of the mounting seat, a first inclined portion is arranged at the inner end edge of the mounting column, a inclined groove is arranged at the middle part of the outer side of the mounting column, an extrusion plate is arranged inside the side wall of the mounting seat, a second inclined portion and a third inclined portion are arranged on both sides of one end of the extrusion plate, an inclined panel is arranged on the end surface of the extrusion plate, a spring is arranged on one side of the inclined panel, a driving ring is arranged on the outer side of the mounting seat, the extrusion plate can reciprocate along a straight line, the driving ring reciprocates along the axis direction of the mounting seat, and a saw blade is fastened to the middle part of the outer end of the mounting column.

[0007] Furthermore, grooves are symmetrically provided on the inner side of the mounting seat, and both ends of the outer side of the mounting column are fixedly connected with protrusions, which are slidably connected to the inner surface of the groove.

[0008] Furthermore, a plurality of evenly distributed first inclined portions are formed at the inner end edge of the mounting column, a plurality of inclined grooves corresponding to the first inclined portions are opened in the middle portion of the outer side of the mounting column, a plurality of rectangular grooves corresponding to the inclined grooves are opened on the inner wall of the mounting seat, an extrusion plate is slidably connected to the inner side of the rectangular groove, an inclined plate is fixedly connected to the end face of the extrusion plate, springs are fixedly connected on both sides of the end face of the extrusion plate, the other end of the spring is fixedly connected to the inner end face of the rectangular groove, a second inclined portion and a third inclined portion are respectively formed on both sides of the inner end of the extrusion plate, the first inclined portion is in contact with the second inclined portion, and the third inclined portion is in contact with the inclined face of the inclined groove.

[0009] Furthermore, the inner side of the driving ring is threadedly connected to the outer side of the mounting seat, and the driving ring is contact-connected with the inclined surface of the inclined plate.

[0010] Furthermore, the outer side of the driving ring is formed with a plurality of evenly distributed anti-slip strips.

[0011] Furthermore, a side panel is fixedly connected to the side of the inclined panel.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The utility model provides a saw head of a medical reciprocating saw. When the medical reciprocating saw needs to install a saw blade, the mounting column connected to the saw blade is inserted into the mounting seat. During the movement of the mounting column, the first inclined surface squeezes the second inclined surface, and the second inclined surface is squeezed to drive the squeezing plate to move outward and squeeze the spring at the same time. Then the mounting column continues to move. When the lower end of the squeezing plate faces the bevel groove, the spring deformation is restored to generate a driving force, which pushes the third inclined surface to move inward and contact the bevel groove. Then the driving ring is rotated, the driving ring moves linearly and squeezes the inclined surface of the inclined plate. The inclined plate is squeezed and moves inward, driving the third inclined surface to move inward and squeeze the bevel groove, so that the mounting column continues to move until the position is fixed. At this time, the saw blade is installed, and then the reciprocating saw body drives the mounting seat to reciprocate, driving the saw blade to reciprocate for cutting. The purpose of this design is to stably install the saw blade to ensure that the saw blade will not fall off or loosen during movement, thereby ensuring the normal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the drive ring in the utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the drive ring in the utility model;

[0017] Figure 4This is a schematic diagram of the extruded plate structure in the utility model.

[0018] In the figure: 1. reciprocating saw body; 2. mounting seat; 3. saw blade; 4. mounting column; 5. protrusion; 6. groove; 7. first inclined portion; 8. inclined groove; 9. extrusion plate; 10. second inclined portion; 11. third inclined portion; 12. inclined panel; 13. spring; 14. rectangular groove; 15. drive ring; 16. side plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In order to solve the technical problem of how to improve stability, such as Figure 1-4 As shown, the following preferred technical solutions are provided:

[0021] A saw head of a medical reciprocating saw is applied to a reciprocating saw body 1, the front end of the reciprocating saw body 1 is transmission-connected with a mounting seat 2, a mounting column 4 is movably provided on the inner side of the mounting seat 2, a first inclined portion 7 is provided at the inner end edge of the mounting column 4, a bevel groove 8 is provided at the middle part of the outer side of the mounting column 4, an extrusion plate 9 is provided inside the side wall of the mounting seat 2, a second bevel portion 10 and a third bevel portion 11 are provided on both sides of one end of the extrusion plate 9, an inclined panel 12 is provided on the end face of the extrusion plate 9, a spring 13 is provided on one side of the inclined panel 12, a drive ring 15 is provided on the outer side of the mounting seat 2, the extrusion plate 9 can reciprocate along a straight line, the drive ring 15 reciprocates along the axial direction of the mounting seat 2, and a saw blade 3 is fastened to the middle part of the outer end of the mounting column 4.

[0022] Specifically, when the medical reciprocating saw needs to install the saw blade 3, the mounting column 4 connected to the saw blade 3 is inserted into the mounting seat 2. During the movement of the mounting column 4, the first bevel portion 7 first squeezes the second bevel portion 10. The second bevel portion 10 is squeezed to drive the squeezing plate 9 to move outward and squeeze the spring 13 at the same time. Then the mounting column 4 continues to move. When the lower end of the squeezing plate 9 is facing the bevel groove 8, the spring 13 deforms and recovers to generate a driving force, pushing the third bevel portion 11 to move inward and contact the bevel groove 8. Then the drive ring 15 is rotated. The drive ring 15 moves linearly and squeezes the bevel of the bevel plate 12. The bevel plate 12 is squeezed and moves inward, driving the third bevel portion 11 to move inward and squeeze the bevel groove 8, so that the mounting column 4 continues to move until the position is fixed. At this time, the saw blade 3 is installed, and then the reciprocating saw body 1 drives the mounting seat 2 to reciprocate, driving the saw blade 3 to reciprocate for cutting. The purpose of such a design is to stably install the saw blade 3 to ensure that the saw blade 3 does not fall off or become loose during movement, thereby ensuring the normal progress of the operation.

[0023] Further, such as Figure 1-3 As shown, the following preferred technical solutions are provided:

[0024] Grooves 6 are symmetrically provided on the inner side of the mounting seat 2, and protrusions 5 are fixedly connected to both ends of the outer side of the mounting column 4. The protrusions 5 are slidably connected to the inner surface of the groove 6. The purpose of this design is to perform preliminary positioning of the mounting column 4 to facilitate subsequent fixation.

[0025] Further, such as Figure 1-4 As shown, the following preferred technical solutions are provided:

[0026] A number of evenly distributed first inclined portions 7 are formed at the inner end edge of the mounting column 4, a number of inclined grooves 8 corresponding to the first inclined portions 7 are provided in the middle of the outer side of the mounting column 4, a number of rectangular grooves 14 corresponding to the inclined grooves 8 are provided on the inner wall of the mounting seat 2, an extrusion plate 9 is slidably connected to the inner side of the rectangular groove 14, an inclined panel 12 is fixedly connected to the end face of the extrusion plate 9, springs 13 are fixedly connected to both sides of the end face of the extrusion plate 9, the other end of the spring 13 is fixedly connected to the inner end face of the rectangular groove 14, a second inclined portion 10 and a third inclined portion 11 are respectively formed on both sides of the inner end of the extrusion plate 9, the first inclined portion 7 is in contact with the second inclined portion 10, and the third inclined portion 11 is in contact with the inclined surface of the inclined groove 8. The purpose of such a design is to drive the inner end of the extrusion plate 9 to enter the mounting column 4 by moving the mounting column 4, to further position the mounting column 4, and to facilitate the final positioning.

[0027] Further, such as Figure 1-4 As shown, the following preferred technical solutions are provided:

[0028] The inner side of the driving ring 15 is threadedly connected to the outer side of the mounting seat 2, and the driving ring 15 is in contact with the inclined surface of the inclined plate 12. The purpose of this design is to rotate the driving ring 15 for linear motion, and to drive the inclined plate 12 to move linearly by squeezing the inclined surface of the inclined plate 12.

[0029] Further, such as Figure 2 As shown, the following preferred technical solutions are provided:

[0030] The outer side of the driving ring 15 is formed with a plurality of evenly distributed anti-skid strips. The purpose of such design is to facilitate the rotation of the driving ring 15 and improve the anti-skid performance.

[0031] Further, such as Figure 4 As shown, the following preferred technical solutions are provided:

[0032] The side of the inclined panel 12 is fixedly connected with a side panel 16. The purpose of this design is to facilitate the outward stretching of the inclined panel 12, so that the extrusion plate 9 can leave the inclined groove 8, so as to facilitate the removal of the mounting column 4. The structural design of several side panels 16 ensures that the mounting column 4 requires multiple people to be removed, thereby ensuring the stability of the saw blade 3.

[0033] To sum up: when the medical reciprocating saw needs to install the saw blade 3, the mounting column 4 connected to the saw blade 3 is inserted into the mounting seat 2. During the movement of the mounting column 4, the first bevel portion 7 first squeezes the second bevel portion 10. The second bevel portion 10 is squeezed to drive the squeezing plate 9 to move outward and squeeze the spring 13 at the same time. Then the mounting column 4 continues to move. When the lower end of the squeezing plate 9 is facing the bevel groove 8, the spring 13 deforms and recovers to generate a driving force, pushing the third bevel portion 11 to move inward and contact the bevel groove 8. Then the drive ring 15 is rotated. The drive ring 15 moves linearly and squeezes the bevel of the bevel plate 12. The bevel plate 12 is squeezed and moves inward, driving the third bevel portion 11 to move inward and squeeze the bevel groove 8, so that the mounting column 4 continues to move until the position is fixed. At this time, the saw blade 3 is installed, and then the reciprocating saw body 1 drives the mounting seat 2 to reciprocate, driving the saw blade 3 to reciprocate for cutting. The purpose of such a design is to stably install the saw blade 3 to ensure that the saw blade 3 does not fall off or become loose during movement, thereby ensuring the normal progress of the operation.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A saw head for a medical reciprocating saw, applied to a reciprocating saw body (1), the front end of the reciprocating saw body (1) being transmission-connected with a mounting seat (2), characterized in that: A mounting column (4) is movably arranged on the inner side of the mounting seat (2), a first inclined portion (7) is arranged at the inner end edge of the mounting column (4), an inclined groove (8) is arranged in the middle of the outer side of the mounting column (4), an extrusion plate (9) is arranged in the side wall of the mounting seat (2), a second inclined portion (10) and a third inclined portion (11) are arranged on both sides of one end of the extrusion plate (9), an inclined panel (12) is arranged on the end surface of the extrusion plate (9), a spring (13) is arranged on one side of the inclined panel (12), a driving ring (15) is arranged on the outer side of the mounting seat (2), the extrusion plate (9) can reciprocate along a straight line, the driving ring (15) reciprocates along the axial direction of the mounting seat (2), and a saw blade (3) is fastened to the middle of the outer end of the mounting column (4).

2. The saw head of a medical reciprocating saw according to claim 1, characterized in that: The inner side of the mounting seat (2) is symmetrically provided with grooves (6), and both ends of the outer side of the mounting column (4) are fixedly connected with protrusions (5), and the protrusions (5) are slidably connected to the inner surface of the groove (6).

3. The saw head of a medical reciprocating saw according to claim 1, characterized in that: The inner end edge of the mounting column (4) is formed with a plurality of evenly distributed first inclined surface portions (7); the middle portion of the outer side of the mounting column (4) is provided with a plurality of inclined surface grooves (8) corresponding to the first inclined surface portions (7); the inner side wall of the mounting seat (2) is provided with a plurality of rectangular grooves (14) corresponding to the inclined surface grooves (8); an extrusion plate (9) is slidably connected to the inner side of the rectangular groove (14); the end surface of the extrusion plate (9) is fixedly connected to an inclined plate (12); both sides of the end surface of the extrusion plate (9) are fixedly connected to springs (13); the other end of the spring (13) is fixedly connected to the inner end surface of the rectangular groove (14); the inner side ends of the extrusion plate (9) are respectively formed with a second inclined surface portion (10) and a third inclined surface portion (11); the first inclined surface portion (7) is in contact with the second inclined surface portion (10); and the third inclined surface portion (11) is in contact with the inclined surface of the inclined surface groove (8).

4. The saw head of a medical reciprocating saw according to claim 1, characterized in that: The inner side of the driving ring (15) is threadedly connected to the outer side of the mounting seat (2), and the driving ring (15) is in contact with the inclined surface of the inclined plate (12).

5. The saw head of a medical reciprocating saw according to claim 1, characterized in that: The outer side of the driving ring (15) is formed with a plurality of evenly distributed anti-slip strips.

6. The saw head of a medical reciprocating saw according to claim 1, characterized in that: The side of the inclined panel (12) is fixedly connected with a side panel (16).

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