CN220025172U - Rod bending device with angle scales - Google Patents

Abstract

The utility model discloses a rod bender with an angle scale, which includes two gripping rods connected by a pivot shaft. A ratchet and a turntable are provided on the pivot shaft. The ratchet and the turntable are fixedly connected. A spreader rod is fixedly installed, and elbows are fixedly installed on both the spreader rod and the grip rod. One grip rod is connected to the ratchet transmission through a transmission part. The utility model adopts a ratchet mechanism and utilizes the lever principle to realize labor-saving adjustment of the degree of bending of the rod. and precise quantitative adjustments.

Description

A rod bender with angle scale

Technical field

The utility model relates to the technical field of medical equipment, and in particular to a rod bender with an angle scale.

Background technique

Scoliosis, also known as scoliosis, is a spinal deformity in which the spine is curved laterally, which may compress the lungs and heart. Some patients may also experience back pain, limb weakness, difficulty standing and walking, and incontinence of urine and feces. Severe spinal deformity Surgery is required. During the operation, a titanium rod or cobalt-chromium-molybdenum rod needs to be used to complete the preset angle through a rod bender, and then the spine sequence relies on the curvature of the rod to restore the appearance and obtain correction. As clinical experience increases, the traditional clamp-type rod bender is continuously improved. For example:

Utility model patent CN208426200U discloses a rod bender, which includes a first hand-held handle and a second hand-held handle. The heads of the first hand-held handle and the second hand-held handle are equipped with bending components. The first hand-held handle and the third hand-held handle are equipped with bending components. The second hand handle is connected through a first fixed shaft. The fixed shaft is provided with a bending structure used in conjunction with the bending assembly. The bending assembly of the first hand handle is also connected to a linkage mechanism. The linkage mechanism is provided with a There is a through hole for the connecting rod to pass through, and the linkage mechanism is used to adjust the connecting rod in any direction, which solves the problem of easy deviation of the connecting rod after bending.

Utility model patent CN205379354U discloses a plastic plier handle rod bender, which includes left and right plier handles. The head of the right plier handle is provided with an arc-shaped protrusion extending toward the head of the left plier handle, and the left plier is provided with a The stepped concave portion of the arc-shaped protrusion is received. The heads of the left and right plier handles are rotatably connected through two fixed shafts installed on the arc-shaped protrusion and the stepped concave portion. The heads of the left and right plier handles are provided with bending components. Both the left and right handles are made of polymer materials, which greatly reduces the overall mass of the stick bender. The polymer materials used in the handles have the advantages of good biocompatibility and good light transmittance.

However, due to the high hardness of metal rods, especially cobalt-chromium-molybdenum rods, bending with conventional grips is extremely strenuous and laborious. Neither the above-mentioned technology nor existing rod benders have fully solved this critical problem.

Utility model content

In order to solve the technical problems existing in the background art, the present utility model proposes a rod bender with an angle scale. The utility model adopts a ratchet mechanism and utilizes the lever principle to achieve labor-saving adjustment and precise quantitative adjustment of the degree of rod bending.

In order to achieve the above purpose, the present utility model adopts the following technical solutions:

A rod bender with an angle scale, including two grips connected by a pivot shaft. A ratchet and a turntable are provided on the pivot shaft. The ratchet and the turntable are fixedly connected. The turntable is fixedly mounted. There is a spreading rod, and elbows are fixedly installed on the spreading rod and the holding rod. One of the holding rods is connected to the ratchet through a transmission part.

Further, the transmission member is a pawl, one end of the pawl is rotatably connected to the handle through a rotating shaft, and the other end of the pawl is engaged with the ratchet wheel.

Furthermore, an arc-shaped measuring ruler is fixedly installed on the gripping rod. The measuring ruler is marked with an angle scale and is an arc-shaped angle ruler to achieve precise quantitative adjustment.

Furthermore, an anti-slip layer is attached to the handle to increase stability when holding.

Furthermore, the two grips are of different lengths.

Further, the transmission member is fixed on the upper end of a longer handle.

Further, the length of the shorter one gripping rod plus the length of the spreading rod is equal to the length of the other gripping rod.

Further, the diameter of the ratchet wheel is larger than the diameter of the turntable.

Further, the diameter of the turntable is larger than the diameter of the elbow.

The above technical solution of the present invention has the following beneficial technical effects:

1. This application adopts a unique ratchet mechanism design. By rotating one lever clockwise, the other lever remains stationary. The lever moves the ratchet through the transmission part. The rotation of the ratchet drives the turntable to rotate, so that the lever is stretched. According to the lever principle, F grip force

2. The grip of this application is equipped with a measuring ruler, so that the bending angle can be observed to achieve precise quantitative adjustment.

3. The grip of this application is attached with an anti-slip layer to increase the stability when holding.

Description of the drawings

Figure 1 is a schematic structural diagram of a rod bender with an angle scale proposed by the utility model.

Figure 2 is a partial top view structural diagram of a rod bender with an angle scale proposed by the present invention.

The components in the figure are marked as follows: 1. Pivot shaft; 2. Grip; 3. Ratchet; 4. Turntable; 5. Spreading rod; 6. Elbow; 7. Transmission parts; 8. Measurement ruler; 9. Anti-slip layer.

Detailed ways

The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings. The advantages and features of the present utility model will become clearer with the description. However, it should be understood that the embodiments are only exemplary and do not limit the scope of the present invention.

It should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", etc. in the claims and description of this application document are based on the orientation or position shown in the drawings. relationship, and does not necessarily mean that the device or component referred to must have a specific orientation, be constructed or operate in a specific orientation.

In this utility model, unless otherwise clearly stated and limited, terms such as "fixed" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection. A connection can also be an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

The utility model will be further described below in conjunction with the accompanying drawings.

Figures 1 and 2 show the specific structure of a rod bender with an angle scale proposed by the present utility model, which includes two grips 2 connected by a pivot shaft 1. The pivot shaft 1 is provided with a ratchet 3 and The turntable 4, the ratchet 3 and the turntable 4 are fixedly connected. The turntable 4 is fixedly equipped with a spreading rod 5. The spreading rod 5 and the gripping rod 2 are both fixedly mounted with an elbow 6. A gripping rod 2 is connected to the turning plate 4 through a transmission part 7. Ratchet 3 transmission connection.

In an optional embodiment, the transmission member 7 is a pawl. One end of the pawl is rotatably connected to the handle 2 through a rotating shaft, and the other end of the pawl is engaged with the ratchet wheel 3 .

A measuring ruler 8 is fixedly installed on the handle 2. The measuring ruler 8 is an arc-shaped angle ruler and has an angle line.

In an optional embodiment, an anti-slip layer 9 is attached to the grip 2, and anti-slip patterns are provided on the anti-slip layer 9 to increase the stability when holding.

In an optional embodiment, the two grips 2 are of different lengths.

It should be noted that the length of one holding rod 2 plus the length of the spreading rod 5 is equal to the length of the other holding rod 2, and the diameter of the ratchet 3 is larger than the diameter of the turntable 4.

In the utility model, by rotating one lever 2 clockwise and the other lever 2 remaining stationary, the lever 2 moves the ratchet 3 through the transmission member 7, and the rotation of the ratchet 3 drives the turntable 4 to rotate, so that the lever 2 is opened. The elbow on rod 5 moves. According to the lever principle, F grip × R ratchet 3 = F resistance × R turntable 4. When R ratchet >> R turntable 4, the F resistance generated is very large, and the force at this time is enough to bend Cobalt chromium molybdenum rod, in order to achieve the effect of labor saving; by providing a measuring rod 8, the angle of use of the two grips 2 can be observed.

It should be understood that the above-mentioned specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present utility model shall be included in the protection scope of the present utility model. Furthermore, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or equivalents of such scope and boundaries.

Claims (9)

1. The utility model provides a take angle scale's curved excellent ware which characterized in that: including two holding rods (2) that connect through pivot (1), be equipped with ratchet (3) and carousel (4) on pivot (1), fixed connection between ratchet (3) and carousel (4), fixed mounting struts pole (5) on carousel (4), all fixed mounting has elbow (6) on strutting pole (5) and holding rod (2), one holding rod (2) are connected with ratchet (3) transmission through driving medium (7).

2. The bar bender with angle scales as in claim 1, wherein the transmission member (7) is a pawl, one end of the pawl is rotatably connected with the holding rod (2) through a rotating shaft, and the other end of the pawl is in blocking connection with the ratchet wheel (3).

3. The bar bender with angle scales as in claim 2, wherein the holding rod (2) is fixedly provided with a measuring rule (8), and the measuring rule (8) is an arc angle rule.

4. The bar bender with angle scales according to any one of claims 1-3, wherein the grip (2) is attached with an anti-slip layer (9).

5. An angle scale bar bender according to claim 4, wherein the two grips (2) are of different lengths.

6. The bar bender with angle scales as claimed in claim 5, wherein the transmission member (7) is fixed to the upper end of a grip (2) having a longer length.

7. The bar bender with angle scales as claimed in claim 6, wherein the length of one shorter grip (2) plus the length of the spreader bar (5) is equal to the length of the other grip (2).

8. An angularly graduated rod bender according to claim 1, characterized in that the ratchet wheel (3) has a diameter greater than the diameter of the turntable (4).

9. An angularly graduated rod bender according to claim 1, characterized in that the diameter of the turntable (4) is greater than the diameter of the elbow (6).