CN219229886U

CN219229886U - Arterial blood needle with needle tip protection

Info

Publication number: CN219229886U
Application number: CN202222592036.6U
Authority: CN
Inventors: 吴章燕; 宋俊
Original assignee: Shenzhen Longhua Peoples Hospital
Current assignee: Shenzhen Longhua Peoples Hospital
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-06-23
Anticipated expiration: 2032-09-29

Abstract

The utility model relates to the technical field of blood and gas needles and discloses an arterial blood needle with a needle tip for shielding, which is characterized by comprising an injection tube, wherein a cavity is formed in the injection tube, a push rod is slidably arranged in the cavity, a rubber plug is arranged at one end of the push rod, a push plate is arranged at the other end of the push rod, the injection tube is arranged on a connecting column, a needle tube is sleeved on the connecting column, a mounting sleeve is sleeved on the injection tube, a corrugated tube is arranged on the mounting sleeve, one end of the corrugated tube, which is far away from the injection tube, is provided with a mounting plate, the front end of the corrugated tube extends out after the blood drawing of the needle tube is completed until the front end of the corrugated tube extends to the front of the needle tip, the whole needle tube is covered by the corrugated tube, the needle tip is arranged in the corrugated tube, a doctor can avoid the hand puncture of the needle tip in the process of separating the needle tube from the injection tube, and arterial blood dropping out of the needle tip falls into the corrugated tube.

Description

Arterial blood needle with needle tip protection

Technical Field

The utility model relates to the technical field of blood and qi needles, in particular to an arterial blood and qi needle with a needle tip for shielding.

Background

The pulse blood needle is used for taking blood from an artery and comprises a syringe, a needle tube and a push rod, wherein the syringe is provided with a cavity, the push rod is inserted into the cavity, and a connecting column is arranged at the front end of the syringe along the rear end of the syringe;

the rear end of the needle tube is provided with a connecting seat, the front end of the needle tube is provided with a needle point, and the connecting seat is sleeved in the connecting column;

in the unused state, the needle tube is sleeved with a needle cap, so that the needle tube is protected;

when blood collection is needed, the needle cap is taken down from the needle tube, the needle tip of the needle tube is inserted into an artery, and arterial blood is pumped into the cavity through movement of the push rod;

after the blood is drawn, the needle tube is pulled out from the injection tube, and a sealing cap is sleeved on the connecting column to seal the cavity, so that arterial blood is prevented from contacting oxygen.

When the blood drawing is completed, the doctor is easily stabbed by the needle tip because the needle tube is not protected in the process of pulling the needle tube out of the injection tube, and arterial blood drops out of the needle tube and easily falls to the ground or clothes and the like.

Disclosure of Invention

The utility model aims to provide an arterial blood needle with a needle tip protection function, and aims to solve the problem that the arterial blood needle with the needle tip protection function is uncomfortable to wear in the prior art.

The arterial blood needle with the needle tip protected is realized in such a way that the arterial blood needle comprises an injection tube, a cavity is formed in the injection tube, a push rod is slidably arranged in the cavity, a rubber plug is arranged at one end of the push rod, a push plate is arranged at the other end of the push rod extending out of the injection tube, a connecting column is arranged on the injection tube, and a needle tube is sleeved on the connecting column;

the injection tube is sleeved with a mounting sleeve, a corrugated tube is mounted on the mounting sleeve, and a mounting plate is arranged at one end, far away from the injection tube, of the corrugated tube.

Preferably, the rubber plug is provided with a plurality of annular grooves which are uniformly distributed along the axial direction.

Preferably, two mutually symmetrical clamping blocks are arranged on the injection tube, and two L-shaped clamping grooves matched with the clamping blocks are formed in the mounting sleeve.

Preferably, two mutually symmetrical guide rods are arranged on the mounting plate, two connecting blocks are uniformly arranged on the mounting sleeve along the circumference, and guide holes matched with the guide rods are formed in the connecting blocks.

Preferably, the guide rod is sleeved with a reset spring in a sliding manner, one end of the reset spring is arranged on the mounting plate, and the other end of the reset spring is arranged on the connecting block.

Preferably, the mounting plate is provided with a through hole, and the inner diameter of the through hole is slightly larger than the outer diameter of the needle tube.

Preferably, the needle tube is sleeved with a needle cap, and the needle tube is arranged in the needle cap.

Preferably, the injection tube is arranged at the position close to the opening of the cavity, and the outer diameter of the connecting plate is slightly larger than that of the push plate.

Preferably, the corrugated pipe extends to a longest state to be slightly longer than the needle tube, and the corrugated pipe is sleeved on the periphery of the whole needle tube.

Preferably, the needle tube comprises a needle point and a connecting seat sleeved on the connecting column.

Compared with the prior art, the arterial blood needle with the needle tip shielding function has the advantages that the corrugated tube is arranged, the front end of the corrugated tube stretches out after the needle tube is used for drawing blood until the front end of the corrugated tube stretches to the front of the needle tip, the whole needle tube is covered by the corrugated tube, the needle tip is arranged in the corrugated tube, a doctor can avoid the needle tip from stabbing hands in the process of separating the needle tube from the injection tube, and arterial blood dropped out by the needle tip falls into the corrugated tube.

Drawings

FIG. 1 is a schematic diagram of an arterial blood needle with needle tip shielding according to the present utility model;

FIG. 2 is a schematic side sectional view of an arterial blood needle with needle tip shielding according to the present utility model;

FIG. 3 is a schematic view of the structure of a syringe of an arterial blood needle with needle tip shielding according to the present utility model;

fig. 4 is a schematic view of the structure of a bellows of an arterial blood needle with needle tip shielding according to the present utility model.

Reference numerals illustrate:

1. a syringe; 2. a push rod; 3. a push plate; 4. a connecting plate; 5. installing a sleeve; 6. an L-shaped clamping groove; 7. a clamping block; 8. a bellows; 9. a guide rod; 10. a return spring; 11. a mounting plate; 12. a guide hole; 13. a connecting seat; 14. a needle tip; 15. an annular groove; 16. a through hole; 17. a rubber stopper; 18. a chamber; 19. a connecting column; 20. a needle cap; 21. a connecting block; 22. needle tube.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The implementation of the present utility model will be described in detail below with reference to specific embodiments.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.

Referring to fig. 1-4, a preferred embodiment of the present utility model is provided.

The arterial blood needle with the needle tip protected comprises a syringe 1, a cavity 18 is formed in the syringe 1, a push rod 2 is slidably installed in the cavity 18, a rubber plug 17 is installed at one end of the push rod 2, a push plate 3 is installed at the other end, extending out of the syringe 1, of the push rod 2, a connecting column 19 is arranged on the syringe 1, and a needle tube 22 is sleeved on the connecting column 19;

the injection tube 1 is sleeved with a mounting sleeve 5, a corrugated tube 8 is mounted on the mounting sleeve 5, and a mounting plate 11 is arranged at one end, far away from the injection tube 1, of the corrugated tube 8.

Through bellows 8 that is equipped with, can be after needle tubing 22 draws blood finishes, the front end of bellows 8 stretches out, until the front end of bellows 8 stretches to the place ahead of needle point 14 for whole needle tubing 22 is covered by bellows 8, and inside bellows 8 is arranged in to needle point 14, and the doctor is in the in-process of separating needle tubing 22 and syringe 1, avoids needle point 14 to stab the hand, and the arterial blood that needle point 14 dripped falls into in bellows 8.

Specifically, in this embodiment, the rubber stopper 17 is provided with a plurality of annular grooves 15, and the annular grooves 15 are uniformly arranged along the axial direction.

By the annular groove 15 being provided, the contact area of the rubber stopper 17 with the chamber 18 can be increased, thereby increasing the friction force.

Specifically, in this embodiment, two mutually symmetrical clamping blocks 7 are installed on the injection tube 1, and two L-shaped clamping grooves 6 matched with the clamping blocks 7 are formed in the installation sleeve 5.

Through the joint piece 7 that is equipped with and L shape joint groove 6 to can conveniently install the dismouting of sleeve pipe 5, dock through the opening part with L shape joint groove 6 with joint piece 7, when the joint piece inserts the bottom in L shape joint groove 6, can accomplish the connection of installation sleeve pipe 5 and injection tube 1 through rotating installation sleeve pipe 5, when separating needle tubing 22 and injection tube 1, through holding needle tubing 22 in the middle of bellows 8 and rotating certain angle, can release the locking between installation sleeve pipe 5 and the injection tube 1 when unscrewing needle tubing 22.

Specifically, in this embodiment, two symmetrical guide rods 9 are installed on the installation plate 11, two connection blocks 21 are uniformly arranged on the installation sleeve 5 along the circumference, and guide holes 12 matched with the guide rods 9 are formed in the connection blocks 21.

Through the mutually supporting of guide bar 9 and guiding hole 12 that is equipped with to can make mounting panel 11 remove along guide bar 9, and then avoid bellows 8 to take place the skew in the shrink process and lead to bellows 8 to be stabbed by the needle point.

Specifically, in this embodiment, the guide rod 9 is slidably sleeved with a return spring 10, one end of the return spring 10 is mounted on the mounting plate 11, and the other end of the return spring 10 is mounted on the connecting block 4.

Through the reset spring 10 that is equipped with, when drawing blood, drive mounting panel 11 through the forefinger and remove to connecting block 21 and extrude reset spring 10 to deformation for bellows 8 is in accomodate folding condition, loosens mounting panel 11 after drawing blood finishes, and the elasticity potential energy of accessible reset spring 10 drives mounting panel 11 automatic re-setting, and drives bellows 8 and extend to the position of needle point 14.

Specifically, in this embodiment, the mounting plate 11 is provided with a through hole 16, and the inside diameter of the through hole 16 is slightly larger than the outside diameter of the needle tube 13.

Through the through hole 16 is arranged so that the mounting plate 11 passes through the needle cannula 22 when the bellows 8 is contracted.

Specifically, in this embodiment, needle cannula 22 is coupled to needle cap 20, and needle cannula 22 is disposed within needle cap 20.

Needle cannula 22 is protected from contamination by needle cap 20.

Specifically, in this embodiment, the injection tube 1 is disposed with a connecting plate 4 near the opening of the chamber 18, and the outer diameter of the connecting plate 4 is slightly larger than the outer diameter of the push plate 3.

Through the connecting plate 4, doctors can conveniently draw blood through the connecting plate 4 and the pushing plate 3.

Specifically, in this embodiment, bellows 8 is extended to a longest state slightly longer than needle cannula 22, and bellows 8 is fitted around the entire outer periphery of needle cannula 22.

During separation of needle cannula 22 from syringe 1 by the physician, the hand pricking of needle tip 14 is avoided and arterial blood dripping from needle tip 14 falls into bellows 8.

Specifically, in this embodiment, needle cannula 22 includes needle tip 14 and hub 13 that fits over hub 19.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The arterial blood needle with the needle tip protected is characterized by comprising an injection tube, wherein a cavity is formed in the injection tube, a push rod is slidably arranged in the cavity, a rubber plug is arranged at one end of the push rod, a push plate is arranged at the other end of the push rod extending out of the injection tube, a connecting column is arranged on the injection tube, and a needle tube is sleeved on the connecting column;

2. The arterial blood needle with needle tip shielding according to claim 1, wherein the rubber stopper is provided with a plurality of annular grooves which are uniformly arranged along the axial direction.

3. The arterial blood needle with needle tip protection according to claim 1, wherein the injection tube is provided with two mutually symmetrical clamping blocks, and the mounting sleeve is provided with two L-shaped clamping grooves matched with the clamping blocks.

4. The arterial blood needle with needle tip protection according to claim 1, wherein two mutually symmetrical guide rods are arranged on the mounting plate, two connecting blocks are uniformly arranged on the mounting sleeve along the circumference, and guide holes matched with the guide rods are formed in the connecting blocks.

5. The arterial blood needle with needle tip shielding according to claim 4, wherein the guide rod is slidably sleeved with a return spring, one end of the return spring is mounted on the mounting plate, and the other end of the return spring is mounted on the connecting block.

6. The arterial blood needle with needle tip shielding according to claim 1, wherein the mounting plate is provided with a through hole, and the inner diameter of the through hole is slightly larger than the outer diameter of the needle tube.

7. The arterial blood needle with needle tip shielding according to claim 1, wherein the needle tube is sleeved with a needle cap, and the needle tube is arranged in the needle cap.

8. The arterial blood needle with needle tip shielding according to claim 1, wherein the injection tube is arranged with a connecting plate near the opening of the chamber, the outer diameter of the connecting plate being slightly larger than the outer diameter of the push plate.

9. The needle tip shielded arterial blood needle of claim 1, wherein the bellows extends to a longest state slightly longer than the needle cannula, the bellows being disposed around the entire circumference of the needle cannula.

10. The needle tip shielded arterial blood needle of claim 1, wherein the needle cannula comprises a needle tip and a connector hub sleeved on the connector post.