CN220801011U - Blood and qi needle capable of automatically removing needle - Google Patents

Abstract

The utility model discloses a blood and qi needle capable of automatically removing a needle head, which comprises an injector, a needle head, a needle cylinder, a suction tube and a needle head, wherein the injector is arranged on the needle head; the needle handle is movably arranged in the needle cylinder; the upper end of the suction tube is in through connection with the lower end of the needle cylinder, and the needle is sleeved at the lower end of the suction tube; the flange plate can slide up and down along the suction pipe and is arranged in the cylinder of the fixed cylinder, the lower end of the flange plate is fixedly connected with a circular ring, and the circular ring can extend out of the cylinder of the fixed cylinder through the through hole; the spring passes through the suction tube and is arranged between the flange plate and the needle cylinder; the side wall of the fixed cylinder is provided with at least one chute, and a first limit groove is arranged on one side of the top of the fixed cylinder, which is communicated with the chute. The utility model can directly spring the needle head of the blood gas needle into the sharp instrument box, thereby effectively protecting medical staff.

Description

Blood and qi needle capable of automatically removing needle

Technical Field

The utility model relates to the technical field of syringes, in particular to a blood needle capable of automatically removing a needle head.

Background

Arterial blood gas analysis refers to a technical process of analyzing different types of gases and acid-base substances in various gases and liquids. The specimens can be from blood, urine, cerebrospinal fluid, various mixed gases and the like, but the most clinical application is blood. Blood samples include arterial blood, venous blood, mixed venous blood, etc., with arterial blood gas analysis being most commonly used. At present, after arterial blood gas sampling, a needle needs to be pulled out, and then a soft film or a needle cap is sleeved on the needle for inspection, but in the process of taking down the needle, the needle has a great risk of stabbing medical staff, so that occupational exposure danger is caused.

Disclosure of utility model

The utility model aims to solve the technical problem of providing the blood and qi needle capable of automatically removing the needle head, and the needle head of the blood and qi needle can be directly flicked into the sharp instrument box, so that medical staff is effectively protected.

In order to solve the technical problems, the utility model adopts the following technical scheme:

The blood needle capable of automatically removing the needle head comprises a syringe, wherein the syringe comprises a needle handle, a needle cylinder, a suction tube and the needle head; the needle handle is movably arranged in the needle cylinder; the upper end of the suction pipe is connected with the lower end of the needle cylinder in a penetrating way, and the needle is sleeved at the lower end of the suction pipe, and the improvement is that: the needle ejecting device comprises a fixed cylinder, a flange plate and a spring, wherein the top of the fixed cylinder is fixedly connected with the bottom end of the needle cylinder, a through hole is formed in the bottom of the fixed cylinder in a penetrating manner, and the suction pipe can penetrate through the through hole and extend out of the bottom of the fixed cylinder; the flange plate can slide up and down along the suction pipe and is arranged in the cylinder of the fixed cylinder, the lower end of the flange plate is fixedly connected with a circular ring, and the circular ring can extend out of the cylinder of the fixed cylinder through the through hole; the spring passes through the suction pipe and is arranged between the flange plate and the needle cylinder; the side wall of the fixed cylinder is provided with at least one chute, a first limit groove is formed in the top side of the fixed cylinder, a limit block is arranged on the side face of the flange plate at least, the limit block is fixedly connected with the flange plate, and the limit block can fix the flange plate on the first limit groove.

In some embodiments, the first limiting groove is arranged at a position right below the first limiting groove, and the second limiting groove and the third limiting groove are respectively arranged at intervals, and the limiting block can fix the flange plate on the second limiting groove or the third limiting groove.

Compared with the prior art, the utility model at least realizes the following beneficial effects: through the syringe needle pop-up device that sets up at the front end of syringe makes after the sampling is accomplished, can promote the ring flange of card on first spacing groove through the spring that establishes in it, ring on the ring flange will promote the syringe needle to deviate from the straw and fall into appointed collection box simultaneously, does not need the manual needle of taking off, effectively avoids the infection.

Drawings

One or more embodiments of the present utility model will now be described, by way of example only, with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view of a needle in an embodiment of the utility model;

FIG. 2 is an exploded view of the embodiment of FIG. 1;

FIG. 3 is a schematic view of the structure of the present utility model with minimal spring compression;

FIG. 4 is a schematic view of the spring compression of the present utility model when the force is moderate;

fig. 5 is a schematic view of the structure of the present utility model when the compression force of the spring is maximized.

The reference numerals in the figures are: 1. a syringe; 11. a needle handle; 12. a needle cylinder; 13. a suction pipe; 14. a needle; 2. a needle ejection device; 21. a fixed cylinder; 211. a through hole; 212. a chute; 213. a first limit groove; 214. the second limit groove; 215. a third limit groove; 22. a flange plate; 221. a circular ring; 222. a limiting block; 23. a spring; 3. and (5) a shifting block.

Detailed Description

The utility model will be described in detail hereinafter with reference to exemplary embodiments in the accompanying drawings. It should be understood, however, that this utility model may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the utility model to those skilled in the art.

Terms of orientation such as up, down, left, right, front, rear, front, back, top, bottom, etc. mentioned or possible to be mentioned in the present specification are defined with respect to the configurations shown in the drawings, which are relative concepts, and thus may be changed according to different positions and different use states thereof. These and other directional terms should not be construed as limiting terms. Furthermore, the terms "first," "second," "third," and the like are used for descriptive and distinguishing purposes only and are not to be construed as indicating or implying a relative importance of the corresponding components.

As shown in fig. 1 to 5, the automatic needle removing blood needle according to the embodiment of the present utility model includes a syringe 1 and a needle ejection device 2.

Wherein the syringe 1 comprises a needle handle 11, a barrel 12, a suction tube 13 and a needle 14. Specifically, the needle handle 11 is movably disposed within the barrel 12. The upper end of the suction tube 13 is connected with the lower end of the syringe 12 in a penetrating way, and the needle 14 is sleeved at the lower end of the suction tube 13.

Wherein the needle ejection device 2 comprises a fixed barrel 21, a flange 22 and a spring 23. Specifically, the top of the fixed cylinder 21 is fixedly connected with the bottom end of the syringe 12, a through hole 211 is formed in the bottom of the fixed cylinder 21, and the suction pipe 13 can extend out of the bottom of the fixed cylinder 21 through the through hole 211. The flange 22 can slide up and down along the suction pipe 13 and is arranged in the fixed cylinder 21, the lower end of the flange 22 is fixedly connected with a circular ring 221, the circular ring 221 can extend out of the fixed cylinder 21 through the through hole 211, wherein the outer diameter of the circular ring 221 is smaller than the inner diameter of the through hole 211, and the inner diameter of the circular ring 221 is larger than the outer diameter of the suction pipe 13. A spring 23 is disposed between the flange 22 and the barrel 12 through the straw 13. The side wall of the fixed cylinder 21 is provided with at least one chute 212, one side of the top of the fixed cylinder is communicated with the chute 212 and provided with a first limit groove 213, the side surface of the flange 22 is at least provided with a limit block 222, the limit block 222 is fixedly connected with the flange 22, and the limit block 222 can fix the flange 22 on the first limit groove 213.

In order to control the ejecting force of the flange 22, the spacing right below the first limiting groove 213 is provided with a second limiting groove 214 and a third limiting groove 215, and the limiting block 222 can fix the flange 22 on the second limiting groove 214 or the third limiting groove 215. By this arrangement, when the flange 22 is clamped in the first limiting groove 213, the force of the compressed spring 23 will be at the maximum force. When the flange 22 is clamped in the second limiting groove 214, the force of the compressed spring 23 is at a moderate force. When the flange 22 is clamped in the third limiting groove 215, the force of the compressed spring 23 is at the minimum force.

To ensure that the needle 14 can be ejected out of the suction tube 13 when the flange 22 is ejected, the length of the ring 221 is longer than the length of the suction tube 13 extending out of the through hole 211.

The sliding groove 212 and the limiting block 222 are both provided with two symmetrical arrangement, and through the arrangement, the clamping in the fixed cylinder 21 caused by uneven stress when the flange plate 22 slides can be avoided.

In addition, in order to facilitate the stirring of the flange 22, a stirring block 3 is disposed at one end of the limiting block 222 extending out of the chute 212.

The working principle of the utility model is as follows: the sampled injector 1 is moved to the sharps box, the needle 14 is aligned to the throwing opening of the sharps box, the shifting block 3 on the limiting block 222 is pushed clockwise, the spring 23 in a compressed state pushes the flange 22 to move towards one end of the needle 14, and at the moment, the circular ring 221 on the flange 22 pushes the needle 14 arranged on the suction pipe 13 open, so that the needle 14 falls into the sharps box. When the elastic force of the spring 23 is too large or too small, the ejection force can be adjusted by adjusting the position of the flange 22 on the limit groove.

It should be understood that all of the above embodiments are exemplary and not limiting, and that various modifications or variations to the specific embodiments described above will be within the scope of the utility model as contemplated by those skilled in the art.

Claims (6)

1. The blood needle capable of automatically removing the needle head comprises a syringe (1), wherein the syringe (1) comprises a needle handle (11), a syringe barrel (12), a suction tube (13) and a needle head (14); the needle handle (11) is movably arranged in the needle cylinder (12); the upper end of the suction pipe (13) is connected with the lower end of the needle cylinder (12) in a penetrating way, and the needle head (14) is sleeved at the lower end of the suction pipe (13), and is characterized in that: the needle ejecting device (2) comprises a fixed cylinder (21), a flange plate (22) and a spring (23), wherein the top of the fixed cylinder (21) is fixedly connected with the bottom end of the needle cylinder (12), a through hole (211) is formed in the bottom of the fixed cylinder (21) in a penetrating way, and the suction pipe (13) can extend out of the bottom of the fixed cylinder (21) through the through hole (211); the flange plate (22) can slide up and down along the suction pipe (13) and is arranged in the fixed cylinder (21), the lower end of the flange plate (22) is fixedly connected with a circular ring (221), and the circular ring (221) can extend out of the fixed cylinder (21) through the through hole (211); the spring (23) passes through the suction pipe (13) and is arranged between the flange plate (22) and the needle cylinder (12); the side wall of the fixed cylinder (21) is provided with at least one chute (212), one side of the top of the fixed cylinder is communicated with the chute (212) and is provided with a first limit groove (213), the side face of the flange plate (22) is at least provided with a limit block (222), the limit block (222) is fixedly connected with the flange plate (22), and the limit block (222) can fix the flange plate (22) on the first limit groove (213).

2. An automatic despinning blood needle according to claim 1, wherein: the first limiting grooves (213) are arranged below the second limiting grooves (214) and the third limiting grooves (215), and the limiting blocks (222) can fix the flange plate (22) on the second limiting grooves (214) or the third limiting grooves (215).

3. An automatic despinning blood needle according to claim 2, wherein: the outer diameter of the circular ring (221) is smaller than the inner diameter of the through hole (211), and the inner diameter of the circular ring (221) is larger than the outer diameter of the suction pipe (13).

4. An automatic despinning blood needle according to claim 3, wherein: the length of the circular ring (221) is longer than the length of the suction pipe (13) extending out of the through hole (211).

5. An automatic despinning blood needle according to claim 4, wherein: the sliding grooves (212) and the limiting blocks (222) are symmetrically arranged.

6. An automatic despinning blood needle according to claim 5, wherein: one end of the limiting block (222) extending out of the sliding groove (212) is provided with a shifting block (3).