CN220343297U

CN220343297U - Nematode picking needle

Info

Publication number: CN220343297U
Application number: CN202321771115.1U
Authority: CN
Inventors: 杨春菊; 李宏伟; 张琳萄; 李蛮江
Original assignee: Qujing Medical College
Current assignee: Qujing Medical College
Priority date: 2023-07-06
Filing date: 2023-07-06
Publication date: 2024-01-16
Anticipated expiration: 2033-07-06

Abstract

The utility model discloses a nematode picking needle which comprises a holding rod with openings at two ends, wherein first internal threads are arranged at the left end and the right end of the inner wall of the holding rod, a first double-headed screw rod is detachably connected to the lower end of the holding rod, a second double-headed screw rod is detachably connected to the upper end of the holding rod, a fixing sleeve is detachably connected to the lower end of the first double-headed screw rod, a spacer is arranged at the lower end of the inner wall of the holding rod, a needle cylinder is detachably connected to the upper end of the spacer, a plurality of picking needles are detachably connected to the inner wall of the needle cylinder, a sliding hole is formed in the upper end penetrating through the first double-headed screw rod, a fixing rod is slidably connected to the sliding hole, a through hole is formed in the upper end penetrating through the fixing rod, a cross-shaped notch is formed in the lower end of the fixing rod, an external thread is arranged at the upper end of the outer wall of the fixing rod, and a fixing nut is rotatably connected to the upper end of the first double-headed screw rod. The utility model can not only be adjusted according to the needs of different users, but also carry different types of picking needles which are convenient to replace while being convenient to store and protect the picking needles.

Description

Nematode picking needle

Technical Field

The utility model relates to the technical field of nematode cultivation, in particular to a nematode picking needle.

Background

The caenorhabditis elegans is an excellent model organism, has various characteristics, can provide excellent experimental observation objects for scientific researchers, most of nematodes are picked through a nematode picking pen after existing nematode cultivation, the front end of a traditional nematode picking pen body is a glass tube, a platinum wire for picking nematodes is placed inside and fixed through a heat-added glass tube when the nematode picking pen is used, but the existing nematode picking pen is formed by glass outside, so that the glass pen is extremely easy to break, the platinum wire picking hardness inside the glass pen is higher, and the platinum wire cannot be adjusted according to the requirements of users, so that great waste is caused.

In addition, the existing picking needle is usually designed into a storable form for protecting the picking needle, but the picking needle in the form is inconvenient to replace and use different types of picking needles, and when different types of pillows are replaced, an additional picking needle placement box is required to be carried, so that the operation is inconvenient.

Disclosure of Invention

The utility model aims to provide a nematode picking needle which can be adjusted according to the needs of different users, is convenient to store and protect the picking needle, and can carry different types of picking needles which are convenient to replace.

The technical aim of the utility model is realized by the following technical scheme:

the utility model provides a nematode picking needle, includes both ends open-ended holding rod, both ends all are provided with first internal thread about the holding rod inner wall, the lower extreme of holding rod can be dismantled and be connected with the first double-end screw rod that corresponds first internal thread threaded connection, the upper end of holding rod can be dismantled and be connected with the second double-end screw rod that corresponds first internal thread threaded connection, the lower extreme of first double-end screw rod can be dismantled and be connected with the fixed cover of cooperation with it, the holding rod inner wall is kept away from its lower extreme open-ended position and is provided with the spacer of middle trompil, can dismantle in the holding rod in the upper end of spacer be connected with the cylinder of cooperation and both ends all opening, the cylinder inner wall can dismantle and be connected with many and be equidistant distribution and different grade type picking needles;

the utility model discloses a slide hole is provided with the upper end of running through the first double-end screw rod, slide hole sliding connection has can slide from top to bottom and one end stretches out the dead lever of slide hole upper end, runs through the upper end of dead lever inwards has seted up the through-hole, the lower extreme of dead lever has been seted up and is cross and with the through-hole intercommunication just is used for fixing the notch of choosing the needle, the notch is the state of outwards expanding under initial and unstressed state, the dead lever stretches out the outer wall of slide hole one end is provided with the external screw thread, the upper end rotation of first double-end screw rod be connected with the through-hole intercommunication just with external screw thread threaded connection's fixation nut.

Through adopting above-mentioned technical scheme, during the use, will fix the cover earlier and take off from first double-end screw rod, select suitable picking needle according to the in-service use demand, take first double-end screw rod and second double-end screw rod off from the holding rod, take the cylinder out, take suitable picking needle, then put back the cylinder in the holding rod, the second double-end screw rod resumes to initial condition, rotate fixation nut on the first double-end screw rod, let the fixation rod slide downwards along the slide opening through first external screw thread, at this moment, the notch is outside expansion state, put into the through-hole with the picking needle that needs to use, rotate fixation nut again and drive the fixation rod and to retrieve, and fix the picking needle through the notch, fix first double-end screw rod on the holding rod through first internal screw thread, can use after sterilizing the picking needle.

The utility model is further provided with: the needle cylinder is characterized in that a plurality of fixing rings which are in one-to-one correspondence with the picking needles and are used for fixing the corresponding picking needles are arranged on the inner wall of the needle cylinder close to the opening at the upper end of the needle cylinder.

By adopting the technical scheme, the picking needle is convenient to take and place.

The utility model is further provided with: the edge of cylinder lower extreme is provided with the spacing piece, the lower extreme of spacing piece with the cooperation is provided with reset spring between the upper end of spacer, reset spring with can dismantle between the spacing piece and be connected.

Through adopting above-mentioned technical scheme, when taking down the second double-end screw rod, reset spring not only can automatic release the cylinder, can also fix the cylinder in the holding rod, prevents that it from rocking in the holding rod.

The utility model is further provided with: the fixed cover inner wall is close to its open-ended position be provided with first double-end screw rod and the equal threaded connection's of second double-end screw rod second internal thread.

Through adopting above-mentioned technical scheme, can fix fixed cover on the second double-end screw rod, not only can increase the length of holding the pole, also can prevent that fixed cover from losing.

Compared with the prior art, the utility model has the following beneficial effects:

firstly, the utility model can be adjusted according to the needs of different users, and can carry different types of picking needles which are convenient to replace while the picking needles are convenient to store and protect;

secondly, the needle cylinder of the utility model can be used for placing different types of picking needles, and the picking needle cylinder can be suitable for picking different types of nematodes by replacing different picking needles, so that the applicability of the needle cylinder is improved;

thirdly, the reset spring not only can automatically push out the needle cylinder, but also can fix the needle cylinder in the holding rod, so that the normal use of workers is prevented from being influenced by shaking in the holding rod.

Drawings

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

FIG. 2 is a diagram mainly used for showing the positional connection relation of the components;

FIG. 3 is a schematic view of the construction of the cartridge of the present utility model;

FIG. 4 is a view mainly showing a notch and a slide hole;

fig. 5 is primarily intended to show the second internal thread.

In the figure: 1. a grip; 11. a first internal thread; 12. a first double-ended screw; 13. a second double-ended screw; 14. a fixed sleeve; 15. a second internal thread; 16. a slide hole; 17. a fixed rod; 18. a through hole; 19. a notch; 2. an external thread; 21. a fixing nut; 22. a spacer; 23. a needle cylinder; 24. picking needles; 25. a fixing ring; 26. a limiting piece; 27. and a return spring.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1-5, an nematode picking needle includes a holding rod 1 with two open ends, a first internal thread 11 is provided at both left and right ends of an inner wall of the holding rod 1, a first double-ended screw rod 12 in threaded connection with the corresponding first internal thread 11 is detachably connected to a lower end of the holding rod 1, a second double-ended screw rod 13 in threaded connection with the corresponding first internal thread 11 is detachably connected to an upper end of the holding rod 1, a fixing sleeve 14 matched with the lower end of the first double-ended screw rod 12 is detachably connected to a lower end of the first double-ended screw rod 12, and a second internal thread 15 in threaded connection with both the first double-ended screw rod 12 and the second double-ended screw rod 13 is provided at a position, close to the opening, of the inner wall of the fixing sleeve 14.

The position that the inner wall of the holding rod 1 is far away from the opening at the lower end of the holding rod is provided with a spacer 22 with a middle opening, a needle cylinder 23 which is matched with the spacer 22 and is provided with openings at two ends is detachably connected with the upper end of the holding rod 1, the edge of the lower end of the needle cylinder 23 is provided with a limiting plate 26, a reset spring 27 is matched between the lower end of the limiting plate 26 and the upper end of the spacer 22, the reset spring 27 is detachably connected with the limiting plate 26, a plurality of fixing rings 25 which are distributed at equal intervals are arranged at the position, close to the opening at the upper end, of the inner wall of the needle cylinder 23, and each fixing ring 25 is detachably connected with a picking needle 24 which is matched with the fixing rings and is of different types.

A slide hole 16 is formed through the upper end of the first double-headed screw 12, the slide hole 16 is slidably connected with a fixing rod 17 which can slide up and down and one end of which extends out of the upper end of the slide hole 16, a through hole 18 is formed through the upper end of the fixing rod 17 inwards, a notch 19 which is cross-shaped and communicated with the through hole 18 and used for fixing the picking needle 24 is formed at the lower end of the fixing rod 17, the notch 19 is in an outwards expanded state in an initial and unstressed state, an external thread 2 is arranged on the outer wall of one end of the fixing rod 17 extending out of the slide hole 16, and a fixing nut 21 which is communicated with the through hole 18 and in threaded connection with the external thread 2 is rotationally connected at the upper end of the first double-headed screw 12.

The using mode is as follows: when the double-ended screw rod is used, the fixed sleeve 14 is firstly removed from the first double-ended screw rod 12, the proper picking needle 24 is selected according to the actual use requirement, the first double-ended screw rod 12 and the second double-ended screw rod 13 are removed from the holding rod 1, the needle cylinder 23 is automatically ejected by the reset spring 27 on the spacer 22, the proper picking needle 24 is taken, then the needle cylinder 23 is replaced in the holding rod 1, the second double-ended screw rod 13 is restored to the initial state, the reset spring 27 is compressed by the limiting piece 26 at the lower end of the needle cylinder 23, the needle cylinder 23 is fixed in the holding rod 1, and the fixed sleeve 14 is fixed on the second double-ended screw rod 13 through the second internal thread 15, so that the length of the holding rod 1 is increased.

The fixing nut 21 on the first double-headed screw 12 is rotated, the fixing rod 17 slides downwards along the sliding hole 16 through the first external thread 2, at the moment, the notch 19 is in an outward expansion state, the required picking needle 24 is placed into the through hole 18, the fixing nut 21 is rotated again to drive the fixing rod 17 to be recovered into the sliding hole 16, the picking needle 24 is fixed in the through hole 18 through the notch 19, when the picking needle 24 is fixed, the length of the picking needle 24 in the through hole 18 can be adjusted according to the needs of a user, after the fixing is completed, the first double-headed screw 12 is fixed on the holding rod 1 through the first internal thread 11, and the picking needle 24 can be used after sterilization.

The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.

Claims

1. The utility model provides a nematode picking needle, includes both ends open-ended holding rod (1), its characterized in that: the left end and the right end of the inner wall of the holding rod (1) are respectively provided with a first internal thread (11), the lower end of the holding rod (1) is detachably connected with a first double-ended screw rod (12) which is in threaded connection with the corresponding first internal thread (11), the upper end of the holding rod (1) is detachably connected with a second double-ended screw rod (13) which is in threaded connection with the corresponding first internal thread (11), the lower end of the first double-ended screw rod (12) is detachably connected with a fixed sleeve (14) matched with the first double-ended screw rod, a spacer (22) with a middle opening is arranged at the position, far away from the opening at the lower end, of the inner wall of the holding rod (1), a needle cylinder (23) which is matched with the spacer (22) and is provided with openings at both ends is detachably connected with a plurality of picking needles (24) which are distributed at equal intervals and are in different types;

a slide hole (16) is formed at the upper end of the first double-head screw rod (12), a fixed rod (17) which can slide up and down and one end of which extends out of the upper end of the slide hole (16) is slidably connected with the slide hole (16), a through hole (18) is formed at the upper end of the fixed rod (17) inwards, a notch (19) which is cross-shaped and communicated with the through hole (18) and used for fixing the picking needle (24) is formed at the lower end of the fixed rod (17), the notch (19) is in an outwards expanded state in an initial and unstressed state, an external thread (2) is arranged on the outer wall of one end of the fixing rod (17) extending out of the sliding hole (16), and a fixing nut (21) communicated with the through hole (18) and in threaded connection with the external thread (2) is rotationally connected to the upper end of the first double-headed screw (12).

2. A nematode pick according to claim 1, wherein: the needle cylinder (23) is provided with a plurality of fixing rings (25) which are in one-to-one correspondence with the picking needles (24) and fix the corresponding picking needles (24) at positions close to the opening at the upper end of the needle cylinder.

3. A nematode picking needle according to claim 1, characterized in that a limit piece (26) is arranged at the edge of the lower end of the needle cylinder (23), a return spring (27) is arranged between the lower end of the limit piece (26) and the upper end of the separation piece (22), and the return spring (27) is detachably connected with the limit piece (26).

4. A nematode pick according to claim 1, wherein: the inner wall of the fixed sleeve (14) is provided with a second internal thread (15) which is in threaded connection with the first double-headed screw (12) and the second double-headed screw (13) at the position close to the opening of the fixed sleeve.