CN215688802U - Driver - Google Patents

Abstract

The utility model discloses a driver, which comprises a main rod and a thimble, wherein the main rod is provided with a first end and a second end, the end surface of the first end is provided with a groove, the thimble is arranged in the groove and can move between a first position and a second position, at least part of the thimble protrudes out of the end surface of the first end at the first position, and the thimble is positioned in the groove at the second position. According to the driver provided by the embodiment of the utility model, the ejector pin which can be matched with the threaded hole at the tail part of the fusion device is arranged at one end of the main rod, so that the slipping of the driver is effectively avoided, secondary damage to a patient is prevented, the driving efficiency of the driver is improved, and the application range is wide.

Description

Driver

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a driver.

Background

In intervertebral operation, often need implant the fusion ware between two vertebral segments, still need use the impactor to strike the adjustment to the fusion ware position after implanting the fusion ware, impactor in the market is according to fusion ware afterbody shape, mostly be solitary plane or cambered surface structure, and then strike the adjustment position to the fusion ware, among the correlation technique, the tip of impactor is the shovel form, this kind of structure atress is inhomogeneous, the slippage appears very easily, partly special impactor in addition, can only match the structure of specific shape, and can only strike the positive axis angular orientation of fusion ware, application scope is narrow.

SUMMERY OF THE UTILITY MODEL

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

Therefore, the embodiment of the utility model provides the driver, which can effectively avoid the situation of slipping off the fusion cage and has a wide application range.

The driver comprises a main rod and a thimble, wherein the main rod is provided with a first end and a second end, the end surface of the first end is provided with a groove, the thimble is arranged in the groove and can move between a first position and a second position, in the first position, at least part of the thimble protrudes out of the end surface of the first end, and in the second position, the thimble is positioned in the groove.

According to the driver provided by the embodiment of the utility model, the ejector pin which can be matched with the threaded hole at the tail part of the fusion device is arranged at one end of the main rod, so that the situation that the driver slips off is effectively avoided, secondary damage to a patient is prevented, the driving efficiency of the driver is improved, and meanwhile, when the side edge of the fusion device needs to be struck, the ejector pin can be retracted into the main rod, so that the first end of the main rod is attached to the fusion device, the striking range of the driver is improved, and the application range of the driver is wider.

In some embodiments, the first end has a cross-sectional shape that is a flattened rectangle.

In some embodiments, the dimension of the long side of the first oblate rectangle gradually increases in a direction from the second end toward the first end, and the dimension of the short side of the first oblate rectangle remains constant in a direction from the second end toward the first end.

In some embodiments, the end face of the first end is planar.

In some embodiments, the end surface of the first end is perpendicular to the axis of the primary shaft.

In some embodiments, the driver further includes a stopper ring disposed at the notch of the groove, the thimble includes a first section and a second section, the cross-sectional area of the first section is smaller than that of the second section, the first section penetrates through the stopper ring at the first position, and the second section abuts against the stopper ring.

In some embodiments, an end surface of the baffle ring is flush with an end surface of the first end.

In some embodiments, the cross-sectional area of the end of the first section remote from the second section decreases progressively in the direction of the second section towards the first section.

In some embodiments, the main rod is further provided with a through hole formed along a radial direction of the main rod, and the through hole is communicated with the groove.

In some embodiments, a spring is further disposed within the recess for retaining the spike in the first position.

Drawings

FIG. 1 is a schematic diagram of an impactor in accordance with an embodiment of the utility model;

FIG. 2 is an exploded view of a driver according to an embodiment of the present invention;

FIG. 3 is a schematic view of an impactor in a first position according to an embodiment of the utility model;

FIG. 4 is a schematic view of an impactor in a second position according to an embodiment of the utility model;

FIG. 5 is a schematic view of the stem of the impactor according to an embodiment of the utility model;

FIG. 6 is a schematic diagram of a thimble of the driver according to an embodiment of the present invention;

FIG. 7 is a schematic view of a retainer ring of a driver according to an embodiment of the present invention;

FIG. 8 is a schematic view of a spring of the impactor according to an embodiment of the utility model;

FIG. 9 is another schematic view of the stem of the driver according to an embodiment of the present invention;

FIG. 10 is a side view of the stem of the driver according to an embodiment of the present invention;

FIG. 11 is a perspective view of a first end of a main stem of the driver according to an embodiment of the present invention.

Reference numerals:

the device comprises a main rod 1, a groove 11, a through hole 12, a thimble 2, a first section 21, a second section 22, a baffle ring 3, a spring 4 and a fusion device 5.

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 utility model and are not to be construed as limiting the utility model.

The following describes an impactor according to an embodiment of the present invention with reference to the drawings.

As shown in fig. 1 to 11, the impactor according to the embodiment of the utility model includes a main rod 1 and a thimble 2, the main rod 1 has a first end and a second end, the first end is used for holding by a medical staff, the second end is used for knocking the fusion device 5 to adjust the position of the fusion device 5, and the thimble 2 is arranged at the first end of the main rod 1.

Specifically, a first end of the main rod 1 is provided with a groove 11, and the thimble 2 is disposed in the groove 11 and is movable between a first position where at least a portion of the thimble 2 protrudes from an end surface of the first end and a second position where the thimble 2 is disposed in the groove 11.

It should be noted that, the afterbody of fusing ware 5 all generally is equipped with the screw hole to fuse ware 5 and pusher link to each other, the diameter of 2 of ejector pin of impactor is less than the diameter of the last screw hole of fusing ware 5, ejector pin 2 when the primary importance, can insert the screw hole that fuses ware 5, help location impactor, fuse ware 5 is strikeed to the first end of rethread mobile jib 1, can effectively avoid the impactor to take place the slippage when strikeing fuse ware 5, because the screw hole generally is located the intermediate position of fusing ware 5, the dynamics when the impactor strikeed 5 intermediate position of fusing ware is great relatively, the slippage takes place more easily in the impactor, ejector pin 2 has effectively avoided the emergence of this condition with screw hole matched with mode.

When the impactor strikes other positions of the fusion device 5, small force is needed to be used for slight striking, the impactor is not easy to slip, the ejector pin 2 cannot be inserted into the threaded hole of the fusion device 5 at the moment, the ejector pin 2 moves from the first position to the second position, the fusion device 5 is directly struck through the first end of the main rod 1, and interference between the ejector pin 2 and the fusion device 5 can be avoided.

According to the driver provided by the embodiment of the utility model, the ejector pin 2 which can be matched with the threaded hole at the tail part of the fusion device 5 is arranged at one end of the main rod 1, so that the slipping of the driver is effectively avoided, secondary damage to a patient is prevented, the driving efficiency of the driver is improved, and meanwhile, when the side edge of the fusion device needs to be driven, the ejector pin can be retracted into the main rod, so that the first end of the main rod is attached to the fusion device, the driving range of the driver is improved, and the application range of the driver is wider.

Further, the cross-sectional shape of the first end of the primary lever 1 is a flat rectangle, which may also be referred to as a rectangle. It should be noted that, in order to avoid injury to the patient, the corner of the first end is a smooth curved surface, and the impactor can strike the fusion cage 5 along any angle of the tail of the fusion cage 5.

In some embodiments, the cross-sectional area of the first end of the primary shaft 1 increases gradually in the direction from the second end to the first end. Specifically, the dimension of the long side of the first-end flattened rectangle of the primary lever 1 (the dimension in the up-down direction indicated by the arrow in fig. 10) gradually increases in the direction from the second end toward the first end, and the dimension of the short side of the first-end flattened rectangle of the primary lever 1 (the dimension in the left-right direction indicated by the arrow in fig. 10) remains constant in the direction from the second end toward the first end.

It can be understood that the cross-sectional area of the end face of the first end of the main rod 1 is the largest, so that the main rod 1 is more easily contacted with the fusion cage 5, and the difficulty of the operation is favorably reduced.

In some embodiments, the end surface of the first end is a plane and the end surface of the first end is perpendicular to the axis of the main rod 1, so that the contact area between the driver and the fusion device 5 can be increased, the friction force between the driver and the fusion device 5 during knocking can be increased, and the probability of avoiding the driver from slipping can be further reduced.

In some embodiments, the driver further includes a retaining ring 3 for preventing the thimble 2 from being removed from the recess 11, the retaining ring 3 is disposed at the notch of the recess 11, and an end surface of the retaining ring 3 is flush with an end surface of the first end, so as to prevent the retaining ring 3 from interfering with the fusion cage 5.

Specifically, as shown in fig. 6 and 7, the thimble 2 includes a first section 21 and a second section 22, the cross-sectional area of the first section 21 is smaller than that of the second section 22, the retainer ring 3 has a through hole, the cross-sectional area of the first section 21 of the thimble 2 is smaller than that of the through hole, the cross-sectional area of the second section 22 of the thimble 2 is larger than that of the through hole, in the first position, the first section 21 penetrates through the retainer ring 3, the second section 22 abuts against the retainer ring 3 and cannot be separated from the through hole of the retainer ring 3, and in the second position, neither the first section 21 nor the second section 22 protrudes out of the retainer ring 3.

The baffle ring 3 is welded with the main rod 1, the baffle ring 3 is more tightly connected with the main rod 1, the baffle ring 3 and the thimble 2 can be effectively prevented from being separated from the groove 11, and the reliability of the driver is improved.

In some embodiments, as shown in fig. 8, the driver further includes a spring 4, the spring 4 is a compression spring, the spring 4 is disposed in the groove 11, one end of the spring 4 abuts against the bottom of the groove 11, and the other end of the spring 4 abuts against one end of the second section 22 away from the first section 21. The spring 4 provides a force for the thimble 2 to move from the second position to the first position, the thimble 2 is always located at the first position in the normal state, when the driver is knocked at the position of the non-threaded hole of the fusion device 5, the thimble 2 retracts to the second position, and when the driver leaves the fusion device 5, the thimble 2 returns to the first position again.

The cross-sectional area of the end of the first section 21 of the thimble 2 remote from the second section 22 decreases progressively in the direction of the second section 22 towards the first section 21. In other words, the end of the thimble 2 is shaped like a cone with a tip, so that the end of the first section 21 can guide the thimble 2 into the threaded hole, thereby reducing the difficulty of inserting the thimble 2 into the threaded hole.

As shown in fig. 9, in some embodiments, the main rod 1 is further provided with a through hole 12, the through hole 12 is formed along a radial direction of the main rod 1, and the through hole 12 is communicated with the groove 11, so as to clean the groove 11 and avoid breeding bacteria.

The main rod 1, the thimble 2, the baffle ring 3 and the spring 4 are all made of medical stainless steel, and the impactor made of the medical stainless steel is harmless to a human body and has good corrosion resistance.

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 utility model 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 utility model.

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 such 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. The utility model provides a driver, its characterized in that includes mobile jib and thimble, the mobile jib has first end and second end, the terminal surface of first end has the recess, the thimble is established just can move between primary importance and second place in the recess the primary importance, at least part salient of thimble is in the terminal surface of first end the second place, the thimble is located in the recess.

2. The impactor of claim 1, wherein the cross-sectional shape of the first end is a flattened rectangle.

3. The impactor of claim 2, wherein the dimension of the long side of the first oblong rectangle gradually increases in a direction from the second end toward the first end, and the dimension of the short side of the first oblong rectangle remains constant in a direction from the second end toward the first end.

4. The impactor of claim 1, wherein the end surface of the first end is planar.

5. The impactor of claim 3, wherein the end surface of the first end is perpendicular to the axis of the primary shaft.

6. The driver according to claim 1, further comprising a stopper ring disposed at the notch of the recess, wherein the thimble includes a first section having a smaller cross-sectional area than a cross-sectional area of the second section, and a second section extending through the stopper ring in the first position, the second section abutting against the stopper ring.

7. The impactor of claim 6, wherein an end surface of the retainer ring is flush with an end surface of the first end.

8. The impactor of claim 6, wherein the cross-sectional area of the end of the first section distal from the second section decreases progressively in the direction of the second section toward the first section.

9. The driver according to claim 1, wherein the main rod is further provided with a through hole formed along a radial direction thereof, and the through hole is communicated with the groove.

10. The driver according to any of claims 1-9, wherein a spring is further disposed within the recess for retaining the spike in the first position.

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