CN213551820U

CN213551820U - Air isolation type blood-gas needle

Info

Publication number: CN213551820U
Application number: CN202022057975.1U
Authority: CN
Inventors: 孙术芳; 曹妍; 梁靖
Original assignee: Chifeng Municipal Hospital
Current assignee: Chifeng Municipal Hospital
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-06-29
Anticipated expiration: 2030-09-18

Abstract

The utility model relates to the technical field of syringes, specifically speaking relates to an air-isolation type blood gas needle. It includes syringe overcoat, push rod and sets up the syringe needle at syringe overcoat front end, the syringe overcoat includes awl headstock, awl headstock rear side radius is greater than the front side radius, be used for with the syringe needle is connected, syringe overcoat rear side is equipped with supports the lid, it is the annular and has seted up a plurality of draw-in grooves to support the lid inner wall, the syringe overcoat with push rod sliding connection, the position that the push rod is close to the front end is equipped with the stopper, the outer wall of stopper is the annular and has seted up a plurality of spouts, spout inside sliding connection has the fixture block, the fixture block bottom is equipped with the spring. The utility model discloses fixture block, spring and draw-in groove combine to inside the fixture block received deformation spring to produce elasticity and enters into the draw-in groove, rather than the joint, and then fix the push rod, avoid its roll-off syringe overcoat, thereby reach the purpose that the antiskid is taken off.

Description

Air isolation type blood-gas needle

Technical Field

The utility model relates to the technical field of syringes, specifically speaking relates to an air-isolation type blood gas needle.

Background

Along with the development of science and technology, people's living standard can improve, need to detect people's blood gas many times, it is to pH valve, carbon dioxide partial pressure and oxygen partial pressure in the blood, relevant index is surveyed, it is often used for judging whether organism exists the inspection means such as acid-base balance maladjustment and oxygen deficiency degree in medical science, generally adopt blood gas to take a sample to blood, but the blood gas needle is when using, the push rod is when the pull, separates with the syringe overcoat easily, causes the air to get into in the syringe, causes the potential safety hazard, therefore need very careful when using, increase user of service's psychological burden.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an air-insulated formula blood gas needle to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides an air-insulated formula blood gas needle, including syringe overcoat, push rod and the syringe needle of setting at syringe overcoat front end, the syringe overcoat includes awl headstock, awl headstock rear side radius is greater than the front side radius, be used for with the syringe needle is connected, syringe overcoat rear side is equipped with supports the lid, it is annular and has seted up a plurality of draw-in grooves to support the lid inner wall, the syringe overcoat with push rod sliding connection, the position that the push rod is close to the front end is equipped with the stopper, the outer wall of stopper is the annular and has seted up a plurality of spouts, spout inside sliding connection has the fixture block, the fixture block bottom is equipped with the spring, the spring be used for the fixture block reset with the cooperation of draw-in groove joint.

As a further improvement of the technical scheme, a sealing plug is arranged on the front side of the push rod, a plurality of sealing rings are arranged around the sealing plug, and the sealing rings are tightly attached to the inner wall of the outer sleeve of the injector and used for sealing a compression cavity at the front end of the sealing plug.

As a further improvement of the technical scheme, a pressure reducing cover is arranged at the rear end of the push rod, the area of the pressure reducing cover is larger than the cross section of the push rod, and the pressure reducing cover is used for increasing the contact area with fingers.

As a further improvement of the technical scheme, the push rod adopts a star-shaped design.

As a further improvement of the technical scheme, the left side and the right side of the front side wall of the supporting cover are both provided with a supporting seat, and a semicircular groove is formed in the wall of the supporting seat and used for adapting to the shape of a finger.

As a further improvement of the technical scheme, three elastic plates are arranged in the needle head close to the front end, and the three elastic plates are tightly attached to form a sealed circular plate.

Compared with the prior art, the beneficial effects of the utility model are that:

1. in this air-isolation formula blood gas needle, fixture block, spring and draw-in groove combine to inside the fixture block received deformation spring to produce elasticity and enters into the draw-in groove, rather than the joint, and then fix the push rod, avoid its roll-off syringe overcoat, thereby reach the purpose that the antiskid is taken off.

2. In this air isolation formula blood gas needle, closely laminating between the three elastic plate forms a sealed circular slab, and the effort that the suction of blood in the syringe needle and blowout produced makes three elastic plate separation produce the gap, and when not having blood in the syringe needle, three elastic plate receives self elastic action to reset, and further keeps apart the air.

Drawings

FIG. 1 is a schematic view of the entire structure of embodiment 1;

FIG. 2 is an exploded view of the syringe structure of example 1;

FIG. 3 is a schematic view of the structure of the syringe jacket according to example 1;

FIG. 4 is a schematic view of a push rod structure according to embodiment 1;

fig. 5 is a schematic view of the structure of the needle of example 1.

The various reference numbers in the figures mean:

1. a syringe jacket; 11. a cone seat; 12. a support cover; 121. a supporting seat; 122. a card slot;

2. a push rod; 21. a sealing plug; 211. a seal ring; 22. a pressure reducing cover; 23. a limiting block; 231. a chute; 232. a clamping block; 233. a spring;

3. a needle head; 31. an elastic plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Example 1

Please refer to fig. 1-5, the utility model provides an air-isolating blood gas needle, including syringe overcoat 1, push rod 2 and the syringe needle 3 of setting at syringe overcoat 1 front end, syringe overcoat 1 includes awl head seat 11, awl head seat 11 rear side radius is greater than the front side radius, be used for being connected with syringe needle 3, through the little and syringe needle 3 of awl head seat 11 front side radius, thereby make and connect more smooth, syringe overcoat 1 rear side is equipped with support lid 12, support lid 12 inner wall is the annular and has seted up a plurality of draw-in grooves 122, syringe overcoat 1 and push rod 2 sliding connection, the position that push rod 2 is close to the front end is equipped with stopper 23, the outer wall of stopper 23 is the annular and has seted up a plurality of spouts 231, spout 231 inside sliding connection has fixture block 232, fixture block 232 bottom is equipped with spring 233, spring 233 is used for fixture block 232 to reset and draw-in groove 122 joint cooperation.

During the use, pulling push rod 2, make it along 1 inner wall rebound of syringe overcoat, the increase of compression cavity volume this moment, inside atmospheric pressure reduces, then receive external pressure effect to make blood enter into the compression cavity through syringe needle 3, continue pulling push rod 2, when fixture block 232 moves to with draw-in groove 122 level, fixture block 232 receives deformation spring 233 to produce the elastic force effect and resets, enter into inside draw-in groove 122, rather than the joint, fix push rod 2, avoid its roll-off syringe overcoat 1, thereby reach the mesh that the antiskid takes off.

When blood is taken out, the push rod 2 is pushed, the front side surface of the clamping block 232 inclines, and is separated from the clamping groove 122 under the action of an inclination force and a pushing force, so that the push rod 2 is pushed, the volume of the compression cavity is reduced, and the blood is sprayed out from the needle head 3 at the moment.

In this embodiment, the front side of push rod 2 is equipped with sealing plug 21, be equipped with a plurality of sealing washers 211 around sealing plug 21, sealing washer 211 is used for closely laminating with 1 inner wall of syringe overcoat, it is sealed to the compression cavity of sealing plug 21 front end, thereby avoid the air to enter into the compression cavity, reach the isolated purpose of air, and the inside position that is close to the front end of syringe needle 3 is equipped with three elastic plate 31, closely laminate between three elastic plate 31 and form a sealed circular slab, the effort that the suction of blood and blowout produced in the syringe needle 3 make three elastic plate 31 separate and produce the gap, when not having blood in syringe needle 3, three elastic plate 31 receives self elastic force effect to reset, further keep apart the air.

Further, the rear end of the push rod 2 is provided with a pressure reducing cover 22, the area of the pressure reducing cover 22 is larger than the cross section of the push rod 2, the pressure reducing cover 22 is used for increasing the contact area with fingers, and the contact area is increased due to the fact that the pressure is the same, so that the pressure of the push rod 2 on hands is reduced, and the comfort level during pressing is improved.

Specifically, the push rod 2 adopts star type design, and the star type design has reduced 2 consumptive materials of push rod, reaches the purpose of practicing thrift the cost.

In addition, the left side and the right side of the front side wall of the supporting cover 12 are both provided with a supporting seat 121, the wall of the supporting seat 121 is provided with a semicircular groove, and the semicircular groove is used for adapting to the shape of fingers, so that the supporting cover 12 can be conveniently hooked by the fingers, and the sliding is avoided.

The air-insulated formula blood gas needle of this embodiment is when specifically using, at first stimulate push rod 2, make it along 1 inner wall rebound of syringe overcoat, the increase of compression cavity volume this moment, inside atmospheric pressure reduces, then receive external pressure effect to make blood enter into the compression cavity through syringe needle 3, continue to stimulate push rod 2, when fixture block 232 moves to with draw-in groove 122 level, fixture block 232 receives deformation spring 233 to produce the elastic force effect and resets, enter into inside draw-in groove 122, rather than the joint, fix push rod 2, avoid its roll-off syringe overcoat 1, thereby reach the mesh that the antiskid is taken off.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an air-insulated formula blood gas needle, includes syringe overcoat (1), push rod (2) and sets up syringe needle (3) at syringe overcoat (1) front end, its characterized in that: syringe overcoat (1) is including awl headstock (11), awl headstock (11) rear side radius is greater than the front side radius, be used for with syringe needle (3) are connected, syringe overcoat (1) rear side is equipped with supports lid (12), it is the annular and has seted up a plurality of draw-in grooves (122) to support lid (12) inner wall, syringe overcoat (1) with push rod (2) sliding connection, the position that push rod (2) are close to the front end is equipped with stopper (23), the outer wall of stopper (23) is the annular and has seted up a plurality of spouts (231), spout (231) inside sliding connection has fixture block (232), fixture block (232) bottom is equipped with spring (233), spring (233) are used for fixture block (232) reset with draw-in groove (122) joint cooperation.

2. The air-insulated blood gas needle according to claim 1, characterized in that: the front side of push rod (2) is equipped with sealing plug (21), be equipped with a plurality of sealing washer (211) around sealing plug (21), sealing washer (211) be used for with syringe overcoat (1) inner wall closely laminates, and is right the compression cavity of sealing plug (21) front end is sealed.

3. The air-insulated blood gas needle according to claim 2, characterized in that: the rear end of the push rod (2) is provided with a pressure reducing cover (22), the area of the pressure reducing cover (22) is larger than the cross section of the push rod (2), and the pressure reducing cover (22) is used for increasing the contact area with fingers.

4. The air-insulated blood gas needle according to claim 3, characterized in that: the push rod (2) adopts a star-shaped design.

5. The air-insulated blood gas needle according to claim 1, characterized in that: the left side and the right side of the front side wall of the supporting cover (12) are both provided with a supporting seat (121), and a semicircular groove is formed in the wall of the supporting seat (121) and is used for adapting to the shape of a finger.

6. The air-insulated blood gas needle according to claim 1, characterized in that: the position that is close to the front end in syringe needle (3) inside is equipped with three elastic plate (31), and is three closely the laminating forms a sealed circular slab between elastic plate (31).