CN209966494U - Novel spherical osteotomy pendulum saw head and novel spherical osteotomy pendulum saw - Google Patents
Novel spherical osteotomy pendulum saw head and novel spherical osteotomy pendulum saw Download PDFInfo
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- CN209966494U CN209966494U CN201822052766.0U CN201822052766U CN209966494U CN 209966494 U CN209966494 U CN 209966494U CN 201822052766 U CN201822052766 U CN 201822052766U CN 209966494 U CN209966494 U CN 209966494U
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Abstract
The utility model relates to a novel spherical osteotomy pendulum saw head, include: a connecting device; the first end of the first saw blade is connected with the connecting device; the first end of the second saw blade is connected with the second end of the first saw blade, the second saw blade is connected with the first saw blade in an L shape, and a plurality of saw teeth are arranged at the second end of the second saw blade; the inner surfaces of the first saw blade and the second saw blade form a spherical cambered surface; the connecting device, the first saw blade and the second saw blade are integrally formed. Still relate to a novel spherical osteotomy pendulum saw. The spherical osteotomy is realized by forming spherical cambered surfaces on the inner surfaces of the first saw blade and the second saw blade under the action of reciprocating power, so that the osteotomy end is spherical, and the osteotomy end surface is smooth and flat; is beneficial to fine adjustment in the osteotomy, maximizes the contact surface of the osteotomy end face, is beneficial to fixation after osteotomy and reduces related complications.
Description
Technical Field
The utility model relates to a cut bone technical field, especially relate to a novel spherical bone pendulum saw head of cutting and novel spherical bone pendulum saw of cutting.
Background
Osteotomy orthopedic treatment is a common surgical approach in orthopedics clinics. The conventional osteotomy swing saw is mostly adopted for the existing osteotomy orthopedic treatment to carry out osteotomy operation, an osteotomy plane is a plane generally, and the osteotomy mode generally has certain problems, for example, when angle adjustment is carried out, a gap is generated at an osteotomy end generally, so that the osteotomy plane is uneven, poor fracture healing is easily caused, fixation is not firm, and the situations of fracture of a fixed object and the like occur.
In order to solve the problems, the existing osteotomy oscillating saw is improved to obtain a semicircular osteotomy saw. However, the structure of the osteotomy saw has poor strength distribution, so that the osteotomy saw has fracture problems when the osteotomy is performed. In addition, the semicircular osteotomy saw cannot be finely angularly adjusted.
Therefore, there is a need for an osteotomy saw that can solve the above problems, achieve spherical osteotomy, and smooth and flat osteotomy end surface.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a novel spherical osteotomy pendulum saw head aiming at the defects in the prior art.
In order to achieve the purpose, the utility model adopts the technical proposal that:
the utility model provides a novel spherical osteotomy pendulum saw head which characterized in that includes:
a connecting device;
the first end of the first saw blade is connected with the connecting device;
the first end of the second saw blade is connected with the second end of the first saw blade, the second saw blade is connected with the first saw blade in an L shape, and a plurality of saw teeth are arranged at the second end of the second saw blade;
the inner surfaces of the first saw blade and the second saw blade form a spherical cambered surface;
the connecting device, the first saw blade and the second saw blade are integrally formed.
Preferably, the outer end face of the second blade is an arc-shaped face.
Preferably, the outer end face of the second blade has a central angle of less than 90 °.
Preferably, the connecting means comprises:
the first connecting device is cylindrical, and the second end of the first connecting device is connected with the first end of the first saw blade;
and the second connecting device is triangular, and the second end of the second connecting device is connected with the first end of the first connecting device.
Preferably, the radial distance between the axial center of the second connecting means and the edge of the second connecting means is smaller than the radial distance between the axial center of the first connecting means and the edge of the first connecting means.
Preferably, the second connecting means further comprises a connecting hole, the connecting hole being coaxially arranged with the second connecting means.
Preferably, the first end of the second connecting means is spherical.
Preferably, three sides of the second connecting means are convex towards the axis of the second connecting means.
Preferably, the angle formed by the connection of the first saw blade and the connecting device is an obtuse angle.
Preferably, the first saw blade and the second saw blade are connected to form an included angle which is an acute angle, a right angle or an obtuse angle.
Preferably, the connecting device, the first blade and the second blade are made of a stainless steel material.
Preferably, the first end of the first blade is in a shape of narrowing and widening towards the second end of the first blade.
Preferably, the first end of the first blade is trapezoidal and the second end of the first blade is rectangular.
A novel spherical osteotomy pendulum saw comprises the novel spherical osteotomy pendulum saw head.
The utility model adopts the above technical scheme, compare with prior art, have following technological effect:
the novel spherical osteotomy pendulum saw head of the utility model realizes spherical osteotomy by forming spherical cambered surfaces on the inner surfaces of the first saw blade and the second saw blade under the action of back and forth power, so that the osteotomy end is spherical and the osteotomy end surface is smooth and flat; the bone cutting device is beneficial to fine adjustment in the bone cutting operation, maximizes the contact surface of the bone cutting end surface, is beneficial to fixation after bone cutting, and reduces related complications; the spherical cambered surfaces with different diameters can be designed according to different bone parts, so that the spherical cambered surfaces can be applied to all bones; simple structure, convenient operation and wide clinical application prospect.
Drawings
Fig. 1 is a front view of an exemplary embodiment of the present invention.
Fig. 2 is a top view of an exemplary embodiment of the present invention.
Fig. 3 is a right side view of an exemplary embodiment of the present invention.
Fig. 4 is a perspective view of an exemplary embodiment of the present invention.
Fig. 5 is a schematic view of a coupling device and a first saw blade according to an exemplary embodiment of the present invention.
Fig. 6 is a schematic view of a first blade and a second blade of an exemplary embodiment of the present invention.
Fig. 7 is a cross-sectional view of a second blade (first blade) of an exemplary embodiment of the present invention.
Wherein the reference numerals are: a connecting device 1; a first saw blade 2; a second saw blade 3; a first connecting means 11; a second connecting means 12; and a connecting hole 13.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.
The utility model discloses an exemplary embodiment, as shown in fig. 1 ~ 4, a novel spherical osteotomy pendulum saw head that cuts, including connecting device 1, first saw bit 2 and second saw bit 3, connecting device 1, first saw bit 2 and second saw bit 3 connect gradually, and connecting device 1, first saw bit 2 and 3 integrated into one piece of second saw bit.
The coupling device 1 comprises a first coupling device 11 and a second coupling device 12, a first end of the first coupling device 11 being connected to a second end of the second coupling device 12, the first coupling device 11 and the second coupling device 12 being arranged coaxially, the first coupling device 11 being cylindrical and the second coupling device 12 being triangular.
The radial distance between the axis and the edge of the first connecting means 11, i.e. the radius of the first connecting means 11, is larger than the radial distance between the axis and the edge of the second connecting means 12.
Further, the second connecting means 12 is a rounded triangle, i.e. the three corners of the second connecting means 12 are circular arcs.
Further, three sides of the second connecting means 12 may be convex from outside to inside (axial center).
A connection hole 13 is also provided on the second connection means 12, the connection hole 13 being arranged coaxially with the second connection means 12.
Further, a connection hole 13 penetrates the second connection means 12.
Further, the connection hole 13 also penetrates the first connection means 11.
Further, the diameter of the connection hole 13 is smaller than or equal to the distance between both ends of the circular arc of the second connection means 12.
Further, the first end of the second connecting means 12 is spherical.
The first end of the first blade 2 is connected to the second end of the connecting device 1, i.e. the first end of the first blade 2 is connected to the second end of the first connecting device 11.
The shape of the first blade 2 is a shape that widens from a first end to a second end (i.e., a longitudinal section of the first blade 2). Specifically, the first end of the first saw blade 2 is a trapezoid, the second end of the first saw blade 2 is a rectangle, the length of the upper bottom edge of the trapezoid at the first end is equal to the diameter of the first connecting device 11, and the length of the lower bottom edge of the trapezoid at the first end is equal to the length of one side (the side is the side where the rectangle is connected with the trapezoid) of the rectangle at the second end.
The angle alpha formed by the connection of the first blade 2 and the connecting device 1 is an obtuse angle.
Further, the angle range of the included angle α is 90 ° to 150 °, preferably 90 ° to 135 °, and more preferably 120 ° to 135 °.
In the present embodiment, the angle α is 120 ° or 135 °.
Further, the first saw blade 2 has a certain radian, that is, the first saw blade 2 is arc-shaped (that is, the cross section of the first saw blade 2), and a straight line (or a plane) where centers of circles of the arc-shaped first saw blade 2 are located is coplanar with a straight line (or a plane) where axes of the connecting device 1 (that is, the first connecting device 11 and the second connecting device 12) are located.
Further, the central angle γ of the arc of the first blade 2 is less than or equal to 90 °.
Further, the central angle γ of the arc shape of the first blade 2 is 15 ° to 60 °, preferably 30 ° to 45 °.
In particular, the first blade 2 and the connecting device 1 are of a concentric-circle-like design from a right-hand perspective.
The first end of the second blade 3 is connected to the second end of the first blade 2, and the second blade 3 and the first blade 2 form an "L" shaped structure.
Further, the included angle β formed by connecting the first blade 2 and the second blade 3 is an obtuse angle, a right angle or an acute angle.
Further, the angle range of the included angle β is 60 ° to 120 °, and the preferable range is 75 ° to 110 °.
In the present embodiment, the angle β is 75 ° or 90 ° or 105 °.
The second end of the second blade 3 is evenly provided with saw teeth.
The second blade 3 has a certain curvature, i.e. the outer end surface of the second blade 3 is an arc surface (i.e. the cross section of the second blade 3). And the straight line (or plane) where the circle centers of the arcs of the second saw blade 3 are positioned is coplanar with the straight line (or plane) where the circle centers of the arcs of the first saw blade 2 are positioned.
Further, the central angle γ of the outer end face (i.e., the arc face) of the second blade 3 is less than or equal to 90 °.
Further, the central angle γ of the outer end surface (i.e., the arc surface) of the second blade 3 is 15 ° to 60 °, preferably 30 ° to 45 °.
The inner surface of the structure formed by connecting the first saw blade 2 and the second saw blade 3 is a spherical cambered surface, and a straight line (or a plane) where the sphere center of the spherical cambered surface is positioned is coplanar with a straight line (or a plane) where each circle center of the arc of the first saw blade 2 is positioned and a straight line (or a plane) where each circle center of the arc of the second saw blade 3 is positioned.
Furthermore, the sphere radius of the spherical cambered surface is 1 cm-6 cm.
Further, the sphere radius of the spherical cambered surface is 1cm or 4 cm.
Further, the radius of the arc of the outer end surface of the second blade 3 is larger than the radius of the spherical arc surface in terms of the cross section of the second blade 3.
Likewise, in the cross-section of the first blade 2, the radius of the arc of the first blade 2 is larger than the radius of the spherical arc.
Further, the cross section of the second blade 3 may be a shape that gradually widens from the middle to two sides, i.e., the shape is narrow in the middle and wide in two sides
Similarly, the cross section of the first blade 2 may be gradually wider from the middle to the two sides, i.e., a shape with a narrow middle and two wide sides is formed.
The embodiment still relates to a novel spherical bone pendulum saw of cutting, including foretell novel spherical bone pendulum saw head of cutting and pendulum saw main part, pendulum saw main part includes casing, motor and pivot, and the motor setting is connected with the motor in the casing, and novel spherical bone pendulum saw of cutting is connected with the pivot.
The utility model discloses a use method as follows: connecting the novel spherical osteotomy pendulum saw head with the pendulum saw main body, and connecting the second connecting device 12 with the rotating shaft; the motor is started and drives the rotating shaft to rotate, and then drives the second connecting device 12 to rotate (the general rotation angle range is 1-90 degrees), so that the novel spherical osteotomy pendulum saw head rotates 1-5 degrees towards two sides respectively by taking the connecting device 1 as an axis, namely, the novel spherical osteotomy pendulum saw head rotates 1-5 degrees towards one side by taking the connecting device 1 as an axis, then resets and rotates 1-5 degrees towards the other side; under the action of rotation, the spherical arcs of the inner surfaces of the first saw blade 2 and the second saw blade 3 form a spherical section facing the osteotomy position, and the spherical section is flat; in addition, the spherical section of the osteotomy position can be changed by adjusting the angle.
The above description is only an example of the preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and those skilled in the art should be able to realize the equivalent alternatives and obvious variations of the present invention.
Claims (10)
1. The utility model provides a spherical osteotomy pendulum saw head which characterized in that includes:
a connection device (1);
a first saw blade (2), wherein a first end of the first saw blade (2) is connected with the connecting device (1);
the first end of the second saw blade (3) is connected with the second end of the first saw blade (2), the second saw blade (3) is connected with the first saw blade (2) in an L shape, and a plurality of saw teeth are arranged at the second end of the second saw blade (3);
the inner surfaces of the first saw blade (2) and the second saw blade (3) form a spherical cambered surface;
the connecting device (1), the first saw blade (2) and the second saw blade (3) are integrally formed.
2. Spherical osteotomy pendulum saw head according to claim 1, wherein the outer end face of said second saw blade (3) is an arc-shaped face.
3. Spherical osteotomy pendulum saw head according to claim 2, wherein the central angle of the outer end face of said second saw blade (3) is less than 90 °.
4. Spherical osteotomy pendulum saw head according to claim 1, wherein said connection means (1) comprises:
a first connecting device (11), the first connecting device (11) being cylindrical, a second end of the first connecting device (11) being connected to a first end of the first saw blade (2);
a second connecting means (12), said second connecting means (12) being triangular, a second end of said second connecting means (12) being connected to a first end of said first connecting means (11).
5. Spherical osteotomy pendulum saw head according to claim 4, wherein a radial distance between an axial center of said second connecting means (12) and an edge of said second connecting means (12) is smaller than a radial distance between an axial center of said first connecting means (11) and an edge of said first connecting means (11).
6. Spherical osteotomy pendulum saw head according to claim 4, wherein said second attachment means (12) further comprises a connection hole (13), said connection hole (13) being arranged coaxially with said second attachment means (12).
7. Spherical osteotomy pendulum saw head according to claim 1, wherein said first saw blade (2) and said connecting means (1) are connected to form an included angle being an obtuse angle.
8. The spherical osteotomy pendulum saw head of claim 1, wherein said first saw blade (2) and said second saw blade (3) are connected to form an included angle that is acute or right or obtuse.
9. Spherical osteotomy pendulum saw head according to claim 1, wherein a first end of said first saw blade (2) is in a shape narrowing and widening towards a second end of said first saw blade (2).
10. A spherical osteotomy pendulum saw, comprising a spherical osteotomy pendulum saw head according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822052766.0U CN209966494U (en) | 2018-12-07 | 2018-12-07 | Novel spherical osteotomy pendulum saw head and novel spherical osteotomy pendulum saw |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822052766.0U CN209966494U (en) | 2018-12-07 | 2018-12-07 | Novel spherical osteotomy pendulum saw head and novel spherical osteotomy pendulum saw |
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| CN209966494U true CN209966494U (en) | 2020-01-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109589154A (en) * | 2018-12-07 | 2019-04-09 | 上海市第六人民医院 | A kind of spherical shape osteotomy goose saw head and spherical osteotomy goose saw |
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2018
- 2018-12-07 CN CN201822052766.0U patent/CN209966494U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109589154A (en) * | 2018-12-07 | 2019-04-09 | 上海市第六人民医院 | A kind of spherical shape osteotomy goose saw head and spherical osteotomy goose saw |
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