CN211658166U

CN211658166U - Syringe capable of being locked in negative pressure state

Info

Publication number: CN211658166U
Application number: CN201922370179.0U
Authority: CN
Inventors: 陈锦涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-10-13
Anticipated expiration: 2029-12-26

Abstract

The utility model discloses a syringe which can be locked under the negative pressure state, which belongs to the field of syringes and comprises a syringe, a top plate is fixedly connected on the syringe, a movable rod is connected in the syringe in a sliding way and comprises a main rod, the upper end and the lower end of the main rod are respectively connected with a handle and a piston, two pairs of racks are fixedly connected on the side wall of the main rod, mounting holes are drilled on both ends of the top plate, a clamping plate is rotatably connected in the mounting holes and comprises a movable plate, a rotating shaft is connected between the movable plate and the top plate, a torsional spring is connected on the rotating shaft, one end of the movable plate close to the rack is fixedly connected with a clamping plate, the main rod is a hollow tube, through holes matched with the main rod are drilled on the handle and the piston, a rubber film matched with the through holes is fixedly connected on the handle, a waterproof ventilated film, the detection device is convenient to seal and is convenient to operate by hand.

Description

Syringe capable of being locked in negative pressure state

Technical Field

The utility model relates to a syringe field, more specifically say, relate to a syringe that can lock under negative pressure state.

Background

In clinical medical work, a series of puncture operations such as using a syringe to extract effusion and positioning blood vessels are often performed. Such as extracting joint effusion, arterial blood sampling, blind trans-clavicular vein-embedded central venous catheters, etc., during which the clinician is required to constantly review whether the needle tip has reached the desired location.

When the existing injector is used, because negative pressure exists in the injector, sometimes the piston can move under the action of the negative pressure, so that the space size of an injection cavity is changed, the existing injector only simply locks the piston by the friction force between the piston and the inner wall of the injector, the reliability is low, and the existing injector is not easy to find in time when air leaks.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

To the problem that exists among the prior art, the utility model aims to provide a can be at the syringe of locking under the negative pressure state, it can realize making things convenient for detection device leakproofness, makes things convenient for handheld operation.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

The syringe capable of being locked under the negative pressure state comprises a syringe, a top plate is fixedly connected to the syringe, a movable rod is connected to the syringe in a sliding mode and comprises a main rod, a handle and a piston are connected to the upper end and the lower end of the main rod respectively, two pairs of racks are fixedly connected to the side wall of the main rod, mounting holes are formed in the two ends of the top plate, clamping plates are rotatably connected to the inside of the mounting holes and comprise movable plates, a rotating shaft is connected between the movable plates and the top plate, a torsion spring is connected to the rotating shaft, a clamping plate is fixedly connected to one end, close to the racks, of each movable plate, the main rod is a hollow tube, through holes matched with the main rod are formed in the handle and the piston, a rubber film matched with the through holes is fixedly connected to the handle, and a waterproof and breathable film matched with, the detection device is convenient to seal and is convenient to operate by hand.

Furthermore, the cross section of the inner cavity of the injection tube is oval, and the handle and the piston are both oval matched with the inner cavity of the injection tube, so that the movable rod is prevented from rotating.

Furthermore, the injection tube is made of transparent PVC materials, and scale marks are cut on the surface of the injection tube, so that the condition in the injection tube can be observed conveniently.

Further, all laid on the both ends of roof and the handle with the rubber layer, it has anti-skidding line to cut on the rubber layer, increases the frictional force between user's hand and roof and the handle, prevents that the device from taking off one's hand when handheld operation.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of:

(1) this scheme can realize making things convenient for detection device leakproofness, and convenient handheld operation that operates.

(2) The section of the inner cavity of the injection tube is oval, and the handle and the piston are both oval matched with the inner cavity of the injection tube, so that the movable rod is prevented from rotating.

(3) The injection tube is made of transparent PVC materials, and scale marks are chiseled on the surface of the injection tube, so that the condition in the injection tube can be observed conveniently.

(4) The two ends of the top plate and the handles are respectively paved with a rubber layer, anti-slip lines are chiseled on the rubber layer, the friction force between the hands of a user and the top plate and the handles is increased, and the device is prevented from being released when the device is operated by hands.

Drawings

FIG. 1 is a perspective view of the utility model when carrying;

fig. 2 is a perspective view of the present invention in use;

fig. 3 is a cross-sectional view of the present invention;

FIG. 4 is a schematic view of the structure at A in FIG. 3;

fig. 5 is a schematic structural diagram at B in fig. 3.

The reference numbers in the figures illustrate:

the injection syringe comprises a syringe 1, a top plate 2, a clamping plate 3, a movable plate 301, a rotating shaft 302, a torsion spring 303, a clamping plate 304, a movable rod 4, a main rod 401, a rack 402, a piston 404 and a handle 403.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected with each other or indirectly through an intermediate medium, or they may be connected with each other through the inside of two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-3, an injector that can be locked under negative pressure state includes an injection tube 1, the injection tube 1 is made of transparent PVC material, scale marks are chiseled on the surface of the injection tube 1, it is convenient to observe the condition in the injection tube 1, a top plate 2 is fixedly connected to the injection tube 1, a movable rod 4 is slidably connected to the injection tube 1, the movable rod 4 includes a main rod 401, the upper and lower ends of the main rod 401 are respectively connected with a handle 403 and a piston 404, the cross section of the inner cavity of the injection tube 1 is oval, the handle 403 and the piston 404 are both oval matched with the inner cavity of the injection tube 1, and the movable rod 4 is prevented from rotating.

Referring to fig. 3-5, two pairs of racks 402 are fixedly connected to the side wall of the main rod 401, mounting holes are drilled at both ends of the top plate 2, a clamp plate 3 is rotatably connected in the mounting holes, the clamp plate 3 includes a movable plate 301, a rotating shaft 302 is connected between the movable plate 301 and the top plate 2, a torsion spring 303 is connected to the rotating shaft 302, a clamp plate 304 is fixedly connected to one end of the movable plate 301 close to the rack 402, the torsion spring 303 is used for resetting the movable plate 301, the initial position of the movable plate 301 is the position of the movable plate 301 when the clamp plate 304 is clamped with the racks 402, the main rod 401 is a hollow tube, through holes matched with the main rod 401 are drilled on the handle 403 and the piston 404, a rubber film 405 matched with the through holes is fixedly connected to the handle 403, a waterproof and breathable film matched with the through holes is fixedly connected to the piston 404, rubber layers are laid on, increasing the friction between the user's hand and the top plate 2 and handle 403, preventing the device from falling out of hand during handheld operation.

During the use, the user presses a pair of splint 3 and presses handle 403, can realize pressing the operation of injection, and direct outside pulling handle 403 can pull out movable rod 4 from syringe 1, stops pulling movable rod 4 and becomes a pair of splint 3 and the rack 402 joint on the movable rod 4, makes movable rod 4 locked, makes can keep stable negative pressure in the syringe 1.

The mobile jib 401 of this scheme is the hollow tube, and all cut the through-hole on handle 403 and the piston 404, the injection chamber that makes the inner chamber of mobile jib 401 and injection pipe 1 in communicates with each other, the injection chamber is the space between piston 403 and the injection pipe 1 inner chamber bottom, and use rubber membrane 405 to seal on handle 403, when having the negative pressure in injection pipe 1, rubber membrane 405 is sunken, when leaking gas in injection pipe 1, be the ordinary pressure in the injection chamber of injection pipe 1, rubber membrane 405 keeps the level this moment, whether the convenient injection chamber that in time observes out in the injection pipe 1 seals up well.

The above is only a preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.

Claims

1. An injector lockable under negative pressure, comprising a syringe (1), characterized in that: fixedly connected with roof (2) on injection tube (1), sliding connection has movable rod (4) in injection tube (1), movable rod (4) include mobile jib (401), the upper and lower both ends of mobile jib (401) are connected with handle (403) and piston (404) respectively, fixedly connected with two pairs of racks (402) on the lateral wall of mobile jib (401), the mounting hole has all been dug at the both ends of roof (2), it is connected with splint (3) to rotate in the mounting hole, splint (3) include fly leaf (301), be connected with pivot (302) between fly leaf (301) and roof (2), be connected with torsional spring (303) on pivot (302), one end fixedly connected with cardboard (304) that fly leaf (301) is close to rack (402), mobile jib (401) are the hollow tube, all open on handle (403) and piston (404) have with the chisel mobile jib (401) assorted through-hole, fixedly connected with and through-hole assorted rubber membrane (405) on handle (403), fixedly connected with and through-hole assorted waterproof ventilated membrane on piston (404).

2. A syringe lockable under reduced pressure as claimed in claim 1, characterised in that: the cross section of the inner cavity of the injection tube (1) is oval, and the handle (403) and the piston (404) are both oval matched with the inner cavity of the injection tube (1).

3. A syringe lockable under reduced pressure as claimed in claim 1, characterised in that: the injection tube (1) is made of transparent PVC materials, and scale marks are cut on the surface of the injection tube (1).

4. A syringe lockable under reduced pressure as claimed in claim 1, characterised in that: rubber layers are paved at two ends of the top plate (2) and on the handle (403), and anti-skid grains are dug on the rubber layers.