CN114668473A - Radian-adjustable connecting rod - Google Patents

Abstract

The invention discloses a connecting rod with adjustable radian, which comprises a first connecting rod, a second connecting rod and an adjusting assembly, wherein the first connecting rod is rotatably connected with the second connecting rod, the adjusting assembly comprises an adjusting piece and a driving piece, the driving piece and the adjusting piece are both connected with the second connecting rod, the adjusting piece is movable relative to the second connecting rod along a first direction, the adjusting piece is in contact with the first connecting rod, the adjusting piece moves along the first direction to drive the first connecting rod to rotate, the driving piece can drive the adjusting piece to move along the first direction, and the driving piece can lock the adjusting piece after the adjusting piece moves to a preset position to limit the movement of the adjusting piece. The radian-adjustable connecting rod is convenient to adjust, can automatically keep a required angle, does not need to be adjusted repeatedly, is convenient to assemble, and reduces the complexity of an operation.

Description

Radian-adjustable connecting rod

Technical Field

The invention relates to the technical field of medical equipment, in particular to a radian-adjustable connecting rod.

Background

With the development of industry and traffic and the aging problems of domestic and social society, such as the trend that cervical vertebra wounds and diseases rise year by year, surgical operation is one of the currently effective clinical treatment modes.

The occipital-cervical joint fixing system is an implant commonly used in the treatment process of cervical spondylosis, the neck pillow connecting rod is an important structural component in the occipital-cervical joint fixing system, and the neck pillow connecting rod is bent in the operation according to the actual physiological curvature of the occipital bone of a patient, so that the neck pillow connecting rod can be respectively placed in U-shaped grooves of the occipital plate and the screw and locked by the screw plug, and the effect of resetting and fixing is achieved.

There is angle modulation inconvenience in the neck pillow connective bar among the correlation technique to and the problem that is difficult to keep behind the neck pillow connective bar angle modulation, need newly increase the mounting and fix the neck pillow connective bar after the angle adjustment, and discover in the art that neck pillow connective bar angle is improper, need adjust repeatedly, increased the complexity of operation.

Disclosure of Invention

The present invention is directed to solving, at least in part, one of the technical problems in the related art.

Therefore, the connecting rod with the adjustable radian is convenient to adjust, can automatically keep a required angle, does not need to be adjusted repeatedly, is convenient to assemble, and reduces the complexity of an operation.

The radian-adjustable connecting rod of the embodiment of the invention comprises: a first connecting rod; a second connecting rod, the first connecting rod being rotatably connected with the second connecting rod; the adjusting part, the adjusting part includes regulating part and driving piece, the driving piece with the regulating part all with the second connecting rod is connected just the regulating part is relative the second connecting rod is portable along first direction, the regulating part with first connecting rod contact just the regulating part is followed first direction removes and can drive first connecting rod rotates, the driving piece can drive the regulating part is followed first direction removes, just the driving piece is in can lock after the regulating part removes preset position the regulating part is in order to restrict the regulating part removes.

According to the connecting rod with the adjustable radian, disclosed by the embodiment of the invention, the first connecting rod and the second connecting rod are rotatably connected, the driving piece can drive the adjusting piece to move so as to drive the first connecting rod to rotate, and the driving piece can lock the adjusting piece after the adjusting piece moves to the preset position so as to limit the movement of the adjusting piece, so that the adjusting component can adjust the relative angle of the first connecting rod and the second connecting rod, and can lock the first connecting rod so as to keep the required angle unchanged after the angle is adjusted, the angle can be kept without using a screw plug, the assembly is convenient, the problem that the angle needs to be repeatedly adjusted due to the rotation of the first connecting rod in the operation process can be avoided, the complexity of the operation and the operation risk are reduced, and the failure problem caused by the repeated locking of the screw plug can be avoided.

In some embodiments, the driving member has an outer circumference provided with an external thread arranged along the first direction, the adjusting member is sleeved on the driving member and is in threaded connection with the driving member, the driving member is rotatable about a first axis, the first axis extends in a direction parallel to the first direction, and the driving member is rotated to drive the adjusting member to move along the first direction.

In some embodiments, the external threads are anti-back threads.

In some embodiments, the end of the second connecting rod facing the first connecting rod is provided with a cavity extending through the second connecting rod in the first direction, a portion of the driving member fits into the cavity, and the adjusting member fits with the portion of the driving member located in the cavity.

In some embodiments, an end of the second connecting rod facing the first connecting rod is provided with a mounting groove opening to the first connecting rod, the mounting groove communicating with the chamber, an end of the first connecting rod facing the second connecting rod fitting within the mounting groove.

In some embodiments, the connecting rod with adjustable radian further comprises a pivot shaft, the pivot shaft penetrates through the side wall of the mounting groove and is arranged on the first connecting rod in a penetrating mode, and the first connecting rod can rotate relative to the pivot shaft.

In some embodiments, a limiting bump is disposed on an outer circumferential surface of the adjusting member, a portion of the limiting bump fits into the mounting groove, and an inner wall of the mounting groove can abut against the limiting bump to prevent the adjusting member from rotating with the driving member.

In some embodiments, the driving member includes a first catch and a second catch, the first catch and the second catch are spaced apart in the first direction, and the first catch and the second catch are respectively caught at both sides of the second connecting rod in the first direction.

In some embodiments, the chamber comprises a first cavity section, a second cavity section and a third cavity section arranged along the first direction, the cross-sectional area of the first cavity section is larger than that of the second cavity section, the cross-sectional area of the third cavity section is larger than that of the second cavity section, a portion of the first retainer fits within the first cavity section, and a portion of the second retainer fits within the third cavity section;

and/or, the driving piece includes knob and locking bolt, the knob has the cooperation groove that extends along first direction, the partial cooperation of locking bolt is in the cooperation groove and with cooperation groove threaded connection, first card is held the portion and is formed on the knob, the second card is held the portion and is formed on the locking bolt, the regulating part cover is established on the knob.

In some embodiments, one of an end of the first connecting rod facing the second connecting rod and an end face of the adjusting member facing the first connecting rod is provided with a latch, and the other is provided with a slot, and the latch is adapted to fit in the slot.

Drawings

Fig. 1 is a schematic view of a connector rod with adjustable arc according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view of an adjustable arc connector rod according to an embodiment of the present invention.

Fig. 3 is an enlarged view of a portion of an adjustable arc connector rod according to an embodiment of the present invention.

Fig. 4 is a partial schematic view of an adjustable arc connector rod according to an embodiment of the present invention.

Reference numerals:

the occipital plate adjusting mechanism comprises a first connecting rod 1, a latch 11, a second connecting rod 2, a cavity 21, an adjusting assembly 3, a driving piece 31, a knob 311, a locking bolt 312, a first clamping part 313, a second clamping part 314, an adjusting piece 32, a limiting bump 321, a pivot shaft 4, an occipital plate 5, a tail nail 6 and a screw plug 7.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

As shown in fig. 1 to 4, the connecting rod with adjustable radian according to the embodiment of the invention comprises a first connecting rod 1, a second connecting rod 2 and an adjusting component 3. For the convenience of understanding, taking the cervical vertebra operation as an example, during the operation, the neck pillow connecting rod is used in cooperation with the occipital plate 5 and the tail nail 6, specifically, the first connecting rod 1 is an occipital connecting rod and is matched in a U-shaped groove of the occipital plate 5, and the second connecting rod 2 is a neck connecting rod and is matched in a U-shaped groove of the tail nail 6 (refer to fig. 1 and 2).

As shown in fig. 1-4, the first connecting rod 1 is rotatably connected to the second connecting rod 2, the adjusting assembly 3 includes an adjusting member 32 and a driving member 31, the driving member 31 is connected to the second connecting rod 2, the adjusting member 32 is connected to the second connecting rod 2 and is movable in a first direction relative to the second connecting rod 2, the adjusting member 32 is in contact with the first connecting rod 1 and the adjusting member 32 moves in the first direction to drive the first connecting rod 1 to rotate, the driving member 31 can drive the adjusting member 32 to move in the first direction, and the driving member 31 can lock the adjusting member 32 after the adjusting member 32 moves to a predetermined position to limit the movement of the adjusting member 32.

In other words, in the operation process, when the angle of first connecting rod 1 and second connecting rod 2 needs to be adjusted in order to satisfy the assembly of neck pillow connecting rod, can utilize driving piece 31 drive regulating part 32 to move along the first direction in order to drive first connecting rod 1 and rotate relative second connecting rod 2, and after first connecting rod 1 rotated to satisfying the assembly angle, driving piece 31 stopped drive regulating part 32 and moved and prevented regulating part 32 from continuing to move, that is to say, adjusting part 3 had both possessed the function of the bending angle of adjustment neck pillow connecting rod, can realize the locking of neck pillow connecting rod under the bending state again, so that make the neck pillow connecting rod can keep the angle after the adjustment, need not to increase the mounting newly.

It should be noted that, in the related art, it is proposed to use a turning member as an adapter between the first connection rod and the second connection rod so that the first connection rod can rotate relative to the second connection rod, but the inventors found that after the radian adjustment of the neck pillow connection rod in the related art is completed, the neck pillow connection rod needs to be manually placed in the U-shaped grooves of the occipital plate and the tail nail, and then the neck pillow connection rod needs to be locked and maintained at a preset radian by using the screw plug.

However, when the neck pillow connecting rod is placed and installed, the relative angle between the second connecting rod and the first connecting rod is difficult to keep unchanged by hands, and the problem that the neck connecting rod and the first connecting rod rotate relatively due to the fact that the neck connecting rod and the first connecting rod are not assembled in place exists in the screw plug locking process, so that in the operation process, the neck pillow connecting rod with an uncomfortable angle needs to be adjusted repeatedly, the adjusting process is accompanied with the disassembly and assembly of the screw plug, the complexity of the operation is increased, and the risk of screw plug failure is easily caused.

And the adjusting part 3 of this application possesses regulatory function and self-locking function simultaneously to adjust the back of accomplishing at the radian of neck pillow connective bar, with the locking of first connective bar 1, need not to utilize plug screw 7 can realize the maintenance of angle, the problem that the angle that leads to the neck pillow connective bar because of first connective bar 1 rotates need be adjusted repeatedly can not appear.

In addition, the adjusting component 3 in the application can also play a role of a supporting point, for example, when the needs of strutting the occipital bone and the atlantoaxial are clinically needed, the adjusting component 3 can be used as a supporting point to respectively strut the occipital bone and the atlantoaxial by using a distractor.

According to the connecting rod with the adjustable radian, the first connecting rod and the second connecting rod are rotatably connected, the driving piece can drive the adjusting piece to move so as to drive the first connecting rod to rotate, and the driving piece can lock the adjusting piece after the adjusting piece moves to the preset position so as to limit the movement of the adjusting piece, so that the adjusting assembly can adjust the relative angle of the first connecting rod and the second connecting rod, and can lock the first connecting rod to keep the required angle unchanged after the angle is adjusted, the angle can be kept without using a screw plug, the assembly is convenient, the problem that the angle needs to be adjusted repeatedly due to the rotation of the first connecting rod in the operation process can be avoided, the complexity of the operation and the operation risk are reduced, and the failure problem caused by the repeated locking of the screw plug can be avoided. In other embodiments, the adjustable arc connector rod may be used in other environments.

Further, as shown in fig. 3, the outer peripheral surface of the driving member 31 is provided with an external thread arranged along the first direction, the adjusting member 32 is sleeved on the driving member 31, the adjusting member 32 is in threaded connection with the driving member 31, the driving member 31 is rotatable around the first axis, the extending direction of the first axis is parallel to the first direction, and the driving member 31 is rotated to drive the adjusting member 32 to move along the first direction. Preferably, the external thread is a back-off thread.

From this, the screw-thread fit of driving piece 31 and regulating part 32 can realize utilizing the purpose that the rotatory dish of screw thread rises to drive regulating part 32 and removes, and screw-thread fit itself has the effect of preventing moving back, and driving piece 31 is rotatory to be driven regulating part 32 and removes and rotate to the preset position in order to drive first connecting rod 1 promptly, only needs stop rotating driving piece 31, and regulating part 32 can keep at current position automatically. In addition, the precision of screw thread regulation is high, easy control.

Further, as shown in fig. 2 and 3, the end of the second connecting rod 2 facing the first connecting rod 1 is provided with a cavity 21 penetrating the second connecting rod 2 in the first direction, a portion of the driving member 31 is fitted in the cavity 21, and the adjusting member 32 is fitted with a portion of the driving member 31 in the cavity 21. Therefore, the connecting rod is compact in structure, the assembly space of part of structural parts is shared, and after the appearance effect is achieved, the structural integrity is strong.

Further, as shown in fig. 2 to 4, an end of the second connecting rod 2 facing the first connecting rod 1 is provided with a mounting groove opening to the first connecting rod 1 and communicating with the chamber 21, and an end of the first connecting rod 1 facing the second connecting rod 2 is fitted in the mounting groove.

Optionally, as shown in fig. 3, the connecting rod further comprises a pivot 4, the pivot 4 penetrates through the side wall of the mounting groove and is arranged on the first connecting rod 1, and the first connecting rod 1 can rotate relative to the pivot 4. Thus, the adjusting member 32 moves in the first direction to drive the first connecting rod 1 to rotate around the pivot 4 in the direction allowed by the mounting groove, so as to realize the rotation adjustment of the first connecting rod 1.

Further, as shown in fig. 3 and 4, in order to prevent the adjusting part 32 from rotating with the driving part 31, a limiting protrusion 321 is disposed on the outer circumferential surface of the adjusting part 32, a portion of the limiting protrusion 321 is fitted in the mounting groove, and the inner wall of the mounting groove can stop against the limiting protrusion 321 to prevent the adjusting part 32 from rotating with the driving part 31. In other words, the stop between the limiting projection 321 and the inner wall of the mounting groove can prevent the adjusting member 32 from rotating circumferentially, so that the adjusting member 32 can climb or descend with the rotation of the driving member 31.

In some embodiments, as shown in fig. 3, the driving member 31 includes a first catch 313 and a second catch 314, the first catch 313 and the second catch 314 are spaced apart in the first direction, and the first catch 313 and the second catch 314 are respectively caught at both sides of the second connecting rod 2 in the first direction. That is, the driving member 31 is fastened to the second connecting rod 2 by the first and second catches 313 and 314.

Specifically, as shown in fig. 2 to 4, the driving member 31 includes a knob 311 and a locking bolt 312, the knob 311 has a fitting groove extending in the first direction, a portion of the locking bolt 312 is fitted in and threadedly coupled with the fitting groove, a first catch 313 is formed on the knob 311, a second catch 314 is formed on the locking bolt 312, and the adjusting member 32 is fitted on the knob 311. From this, knob 311 and locking bolt 312 easy dismounting, the assembly of driving piece 31 and second connective bar 2 of being convenient for, and the chucking degree accessible locking bolt 312 of driving piece 31 and knob 311 are deep to be adjusted, are favorable to the second connective bar 2 of the different sizes of driving piece 31 adaptation.

Further, as shown in fig. 3, the chamber 21 includes a first cavity section, a second cavity section and a third cavity section arranged along the first direction, the sectional area of the first cavity section is larger than that of the second cavity section, the sectional area of the third cavity section is larger than that of the second cavity section, a portion of the first retaining portion 313 is fitted in the first cavity section, and a portion of the second retaining portion 314 is fitted in the third cavity section. Thus, the outer peripheral edge of the first catch 313 can abut against the inner wall of the first cavity section, and the outer peripheral edge of the second catch 314 can abut against the inner wall of the third cavity section, so as to prevent the driving member 31 from translating, and limit the rotation track of the driving member 31 by using the first cavity section and the third cavity section.

In this embodiment, as shown in fig. 3, one of the end of the first connecting rod 1 facing the second connecting rod 2 and the end face of the adjusting member 32 facing the first connecting rod 1 is provided with a latch 11, and the other is provided with a slot, and the latch 11 is adapted to fit into the slot. From this, when adjusting part 32 removed along the first direction, can utilize the block of draw-in groove and latch 11 to promote first connecting rod 1 and rotate around pivot 4, and the difficult dead phenomenon of rotation card that appears in draw-in groove and latch 11's cooperation.

Alternatively, as shown in fig. 3, the card slot is disposed on the stopper projection 321. It can be understood that, through latch 11 and draw-in groove cooperation, when driving piece 31 drive regulating part 32 moved along first direction, the draw-in groove can stir latch 11 and make first connective bar 1 rotate along pivot 4, and then adjusts the angle of first connective bar 1 for second connective bar 2, and it is simple and convenient to adjust. In other embodiments, the first connecting rod 1 and the adjusting member 32 can be matched in other ways to realize the angle adjustment.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. An adjustable arc connector rod, comprising:

A first connecting rod;

a second connecting rod, the first connecting rod being rotatably connected with the second connecting rod;

the adjusting part, the adjusting part includes regulating part and driving piece, the driving piece with the regulating part all with the second connective bar is connected just the regulating part is relative the second connective bar is portable along the first direction, the regulating part with first connective bar contact just the regulating part is followed first direction removes can drive first connective bar rotates, the driving piece can drive the regulating part is followed first direction removes, just the driving piece is in can lock after the regulating part removes preset position the regulating part is in order to restrict the regulating part removes.

2. The connector rod of claim 1, wherein the driving member has an outer surface provided with an external thread arranged along the first direction, the adjusting member is sleeved on the driving member and is threadedly connected to the driving member, the driving member is rotatable around a first axis, the first axis extends in a direction parallel to the first direction, and the driving member is rotated to drive the adjusting member to move along the first direction.

3. The adjustable arc connector rod of claim 2 wherein said external threads are anti-back threads.

4. The adjustable arc connector rod of claim 2, wherein the end of the second connector rod facing the first connector rod is provided with a cavity extending through the second connector rod in a first direction, a portion of the driving member is engaged in the cavity, and the adjustment member is engaged with the portion of the driving member located in the cavity.

5. The adjustable arc connector rod of claim 4, wherein the end of the second connector rod facing the first connector rod is provided with a mounting groove opening to the first connector rod, the mounting groove communicating with the chamber, and an end of the first connector rod facing the second connector rod is fitted in the mounting groove.

6. The adjustable arc connecting rod of claim 5, further comprising a pivot shaft extending through a sidewall of the mounting groove and through the first connecting rod, the first connecting rod being rotatable relative to the pivot shaft.

7. The adjustable arc connecting rod of claim 5, wherein the adjusting member has a limiting protrusion on its outer circumference, part of the limiting protrusion fits into the mounting groove, and the inner wall of the mounting groove can stop against the limiting protrusion to prevent the adjusting member from rotating with the driving member.

8. The adjustable arc connecting rod of claim 4, wherein the driving member comprises a first catch and a second catch, the first catch and the second catch being spaced apart in the first direction, the first catch and the second catch respectively catching both sides of the second connecting rod in the first direction.

9. The radian-adjustable connector rod of claim 8, wherein the cavity comprises a first cavity section, a second cavity section and a third cavity section arranged along the first direction, the cross-sectional area of the first cavity section is larger than that of the second cavity section, the cross-sectional area of the third cavity section is larger than that of the second cavity section, part of the first retainer fits in the first cavity section, and part of the second retainer fits in the third cavity section;

and/or, the driving piece includes knob and locking bolt, the knob has the cooperation groove that extends along first direction, the partial cooperation of locking bolt is in the cooperation groove and with cooperation groove threaded connection, first card is held the portion and is formed on the knob, the second card is held the portion and is formed on the locking bolt, the regulating part cover is established on the knob.

10. A connector rod with adjustable arc according to any one of claims 1 to 9, wherein the end of the first connector rod facing the second connector rod and the end of the adjuster facing the first connector rod are provided with a latch on one and a catch on the other, the latch being adapted to fit within the catch.

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