CN219250265U - Safety locking structure of disposable biopsy needle - Google Patents

Abstract

The utility model discloses a safety locking structure of a disposable biopsy needle, which comprises a biopsy needle body, wherein the front surface of the biopsy needle body is provided with a movable window, the inside of the movable window is provided with a switch, the outside of the movable window is provided with a connecting piece arranged on the front surface of the biopsy needle body, the inside of the connecting piece is respectively provided with a gear cavity, a cavity and an air cavity, the inside of the gear cavity is provided with a driving gear, two sides of the driving gear are respectively meshed with a driven gear, the right side of the driven gear is fixedly connected with a threaded shaft extending to the inside of the cavity, the outside of the threaded shaft is in threaded connection with a movable plate in sliding connection with the inner wall of the cavity, and the right side of the movable plate is respectively fixedly connected with a connecting rod. The safety locking structure of the disposable biopsy needle has the advantages of being simple to operate and convenient to use, and can prevent the disposable biopsy needle from being triggered due to the fact that the disposable biopsy needle is accidentally touched on a switch, so that unnecessary loss of equipment is effectively avoided.

Description

Safety locking structure of disposable biopsy needle

Technical Field

The utility model relates to the technical field of biopsy needles, in particular to a safety locking structure of a disposable biopsy needle.

Background

The biopsy needle is a medical instrument for sampling and sucking cells from living tissues of cone tumors, unknown tumors and the like of various organs such as kidneys, livers, lungs, breasts, thyroid glands, prostates, pancreas, testes, uterus, ovaries, body surfaces and the like.

The disposable biopsy needle is provided with a firing switch when in use, the biopsy needle can be fired after operation, and human tissues are collected, and in the present stage, as the disposable biopsy needle mostly lacks a limiting structure for the switch, the condition that the disposable biopsy needle is accidentally touched when in use can possibly cause the firing operation of the disposable biopsy needle, thereby causing unnecessary loss of equipment.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the utility model provides the safety locking structure of the disposable biopsy needle, which has the advantages of simple operation and convenient use, and can prevent the disposable biopsy needle from being triggered due to the false touch of a switch, thereby effectively avoiding unnecessary loss of equipment.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a safety locking structure of disposable biopsy needle, includes the biopsy needle body, the front of biopsy needle body has seted up the removal window, the inside of removal window is provided with the switch, the outside of removal window is provided with the connecting piece that sets up at the biopsy needle body front, gear cavity, cavity and air cavity have been seted up respectively to the inside of connecting piece, gear cavity inside is provided with the driving gear, the both sides of driving gear mesh respectively has driven gear, the equal fixedly connected with in right side of driven gear extends to the screw shaft of cavity inside, the outside threaded connection of screw shaft has the fly leaf with cavity inner wall sliding connection, the right side of fly leaf is fixedly connected with connecting rod respectively, the right side fixedly connected with first piston plate of connecting rod, be provided with air duct between cavity and the air cavity, the inside of air cavity is provided with the second piston plate, the opposite side of second piston plate is fixedly connected with extension connecting piece respectively and sets up the spacing post on the switch right side.

Preferably, a rotating handle which extends into the gear cavity and is fixedly connected with the driving gear is arranged on the left side of the connecting piece.

Preferably, the number of teeth of the driving gear is greater than that of the driven gear.

Preferably, the inside of the gear cavity is rotationally connected with an auxiliary shaft fixedly connected with the driven gear.

Preferably, sealing rings are arranged on the outer sides of the first piston plate and the second piston plate.

The beneficial effects of the utility model are as follows:

1. when the biopsy needle is used, the driving gear is driven to synchronously rotate in a mode of rotating the rotating handle, the driving gear drives the two side threaded shafts to rotate through the meshing action of the driving gear and the two side driven gears, the two side threaded shafts respectively drive the movable plates connected with the two side threaded shafts to move rightwards when rotating, the two side movable plates drive the two side first piston plates to move rightwards through the connecting rods, air in the cavity is led into the air cavity under the matching action of the air guide channel, the pressure in the air cavity is increased, the two side second piston plates are pushed to drive the two side limiting columns to move oppositely, the limiting columns extend out of the connecting piece and limit the switch, so that the disposable biopsy needle is prevented from being triggered due to the mistaken touching of the switch, unnecessary loss of the instrument is effectively avoided, and when the limitation of the switch is required to be relieved, the two side limiting columns are enabled to move backwards under the matching action of each component structure, and the limitation of the switch is relieved.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view of the overall structure of the present utility model;

figure 2 is a cross-sectional view of a connector structural assembly of the present utility model.

Reference numerals in the drawings: 1. a biopsy needle body; 2. a moving window; 3. a switch; 4. a connecting piece; 5. a gear cavity; 6. a cavity; 7. an air cavity; 8. a drive gear; 9. a rotating handle; 10. a driven gear; 11. a threaded shaft; 12. a movable plate; 13. a connecting rod; 14. a first piston plate; 15. an air guide channel; 16. a second piston plate; 17. and a limit column.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying positive importance.

Example 1

The safety locking structure of the disposable biopsy needle shown in fig. 1-2 comprises a biopsy needle body 1, a movable window 2 is arranged on the front surface of the biopsy needle body 1, a switch 3 is arranged in the movable window 2, a connecting piece 4 arranged on the front surface of the biopsy needle body 1 is arranged on the outer side of the movable window 2, a gear cavity 5, a cavity 6 and an air cavity 7 are respectively arranged in the connecting piece 4, a driving gear 8 is arranged in the gear cavity 5, a rotating handle 9 which extends into the gear cavity 5 and is fixedly connected with the driving gear 8 is arranged on the left side of the connecting piece 4, the driving gear 8 is driven to rotate through the rotating handle 9, driven gears 10 are respectively meshed with two sides of the driving gear 8, the number of teeth of the driving gear 8 is larger than that of driven gears 10, the driving gear 8 can realize the position adjustment of a first piston plate 14 through rotation with fewer circles, a threaded shaft 11 which extends into the cavity 6 is fixedly connected to the right side of the driven gear 10, a movable plate 12 which is in sliding connection with the inner wall of the cavity 6 is respectively arranged on the outer side of the threaded shaft 11, a connecting rod 13 is fixedly connected to the right side of the piston plate 12, a first connecting rod 14 is fixedly connected with the right side of the piston plate 13, a second piston plate 16 is fixedly connected with the right side of the connecting rod 13, a second piston plate 16 is fixedly connected with the air guide plate 16 is fixedly connected with the air cavity 7, and a second piston plate 16 is fixedly connected with the second air cavity 16, and the position of the air guide plate 16 is fixedly connected with the second piston plate 16, and the position of the air guide plate is fixedly connected with the air guide device, and the position of the air guide device is provided with the air guide device, and the air device, and the position of a position device, and the safety device is shown.

When the biopsy needle is used, the driving gear 8 can be driven to synchronously rotate in a mode of rotating the rotating handle 9, the driving gear 8 drives the two side threaded shafts 11 to rotate through the meshing action of the driving gear 8 and the two side driven gears 10, the two side threaded shafts 11 respectively drive the movable plates 12 connected with the two side threaded shafts to move right when rotating, the two side movable plates 12 drive the two side first piston plates 14 to move right through the connecting rods 13, air in the cavity 6 is led into the air cavity 7 under the matching action of the air guide channels 15, the internal pressure of the air cavity 7 is increased, the two side second piston plates 16 are further driven to drive the two side limiting columns 17 to move in opposite directions, the limiting columns 17 extend out of the connecting pieces 4 and limit the switch 3, so that the disposable biopsy needle is prevented from being fired due to mistakenly touching the switch 3, unnecessary loss of the biopsy needle is effectively avoided, and when the limitation on the switch 3 is required to be relieved, the limiting columns 17 can be moved in opposite directions under the matching action of each component structure.

Example two

Referring to fig. 2, as another preferred embodiment, the difference from the first embodiment is that the inside of the gear chamber 5 is rotatably connected with an auxiliary shaft fixedly connected with the driven gear 10, and by providing the auxiliary shaft, the stability of the driven gear 10 when driving the threaded shaft 11 to rotate can be improved.

Example III

Referring to fig. 2, as another preferred embodiment, there is a difference from the first embodiment in that sealing rings are provided on the outer sides of the first and second piston plates 14 and 16, and sealing performance of the first and second piston plates 14 and 16 can be improved by providing the sealing rings.

Finally, it should be noted that: the above is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that the present utility model is described in detail with reference to the foregoing embodiments, and modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (5)

1. The utility model provides a safety locking structure of disposable biopsy needle, includes biopsy needle body (1), its characterized in that: the utility model discloses a biopsy needle, including biopsy needle body (1), gear cavity (5), cavity (6) and air cavity (7) have been seted up in the front of biopsy needle body (1), remove window (2) inside is provided with switch (3), the outside of remove window (2) is provided with and sets up positive connecting piece (4) at biopsy needle body (1), gear cavity (5) inside has been seted up respectively, cavity (6) and air cavity (7), gear cavity (5) inside is provided with driving gear (8), driven gear (10) have been meshed respectively to the both sides of driving gear (8), the equal fixedly connected with in right side of driven gear (10) extends to screw mandrel (11) inside cavity (6), the outside threaded connection of screw mandrel (11) have fly leaf (12) with cavity (6) inner wall sliding connection, the right side of fly leaf (12) is fixedly connected with connecting rod (13) respectively, the right side fixedly connected with first piston plate (14) of connecting rod (13), be provided with air guide channel (15) between cavity (6) and air cavity (7), inside (16) are provided with, and limiting columns (17) extending out of the connecting piece (4) and arranged on the right side of the switch (3) are fixedly connected to the opposite sides of the second piston plate (16) respectively.

2. The safety lockout structure of a disposable biopsy needle of claim 1, wherein: the left side of connecting piece (4) is provided with and extends to inside gear chamber (5) and just with driving gear (8) fixed connection's stem (9).

3. The safety lockout structure of a disposable biopsy needle of claim 1, wherein: the number of teeth of the driving gear (8) is more than that of the driven gear (10).

4. The safety lockout structure of a disposable biopsy needle of claim 1, wherein: the inside of the gear cavity (5) is rotationally connected with an auxiliary shaft fixedly connected with the driven gear (10).

5. The safety lockout structure of a disposable biopsy needle of claim 1, wherein: sealing rings are arranged on the outer sides of the first piston plate (14) and the second piston plate (16).

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