CN215690587U

CN215690587U - Infusion needle capable of preventing blood return

Info

Publication number: CN215690587U
Application number: CN202121892233.9U
Authority: CN
Inventors: 牛海兰; 薛炯; 黄建强; 陈彬; 田源; 田泉
Original assignee: Nanyang Jiukang Medical Instrument Co ltd
Current assignee: Nanyang Jiukang Medical Instrument Co ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2022-02-01
Anticipated expiration: 2031-08-13

Abstract

The utility model discloses an infusion needle capable of preventing blood return, which comprises a needle head, wherein a connecting pipe is arranged on one side of the needle head, a clamping piece is arranged on the connecting pipe, the clamping piece comprises a sleeve, the sleeve is sleeved outside the connecting pipe, the inner wall of the sleeve is fixedly connected with a baffle, a sliding groove is arranged inside the sleeve, an arc-shaped plate is slidably connected in the sliding groove, one end of the arc-shaped plate is fixedly connected with the arc-shaped plate, an extrusion block is arranged on the outer arc surface of the arc-shaped plate and corresponds to the baffle, an installation hole is arranged on the outer arc surface of the arc-shaped plate, a ball is slidably connected in the installation hole, a supporting spring is arranged between the ball and the hole bottom of the installation hole, two through holes are arranged on the inner wall of the sliding groove, and the through holes and the ball are arranged correspondingly. According to the utility model, the limiting of the arc-shaped plate can be released only by inserting the operating rod into the through hole, so that the stability of the clamping piece is kept.

Description

Infusion needle capable of preventing blood return

Technical Field

The utility model relates to the technical field of infusion needles, in particular to an infusion needle capable of preventing blood return.

Background

In the early 80 s, venous indwelling needles entered developed countries and regions of asia; in the 90 s, the open type indwelling needle firstly enters the operating room of China. The occurrence of the open type indwelling needle greatly reduces the pain of a patient caused by repeated puncture of a common steel needle, particularly in department of pediatrics and geriatrics, and is gradually popularized to other departments.

When sealing the pipe to the needle of keeping somewhere, need to grasp the transfer line, present holder is half for the plastics elastic component, presses down through elasticity and forms to close and open, and the elastic component is bumped by the mistake easily and is caused droing, causes the transfer line to open, influences the result of use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art, and provides an infusion needle capable of preventing blood return, so that the problems in the prior art are solved.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a can prevent transfusion needle of blood return, includes the syringe needle, syringe needle one side is equipped with the connecting pipe, be equipped with the holder on the connecting pipe, the holder includes the sleeve pipe, the sleeve pipe cup joints in the connecting pipe outside, intraductal wall fixed connection baffle, the intraductal sliding tray that is equipped with of cover, sliding tray sliding connection arc, arc one end fixed connection arc board, the extrados of arc board is equipped with the extrusion piece, the extrusion piece corresponds the setting with the baffle, the extrados of arc board is equipped with the mounting hole, sliding connection ball in the mounting hole, be equipped with supporting spring between the hole bottom of ball and mounting hole, the inner wall of sliding tray is equipped with two through-holes, the through-hole corresponds the setting with the ball.

Preferably, the diameter of the through hole is smaller than that of the ball, and the through hole is provided in communication with the outside of the sleeve.

Preferably, a through groove is formed in the outer side of the sleeve, the through groove is communicated with the sliding groove, a side plate is fixedly connected to one side of the arc plate, and the side plate extends out of the sleeve through the through groove.

Preferably, the height of the side plate extending out of the excircle of the sleeve is 1-2 mm.

Preferably, the outer side of the side plate is provided with anti-skid grains.

Preferably, the extrusion block is arc-shaped, and the baffle is provided with an arc-shaped groove.

Preferably, one end of the outer side of the sleeve is fixedly connected with the circular ring.

Preferably, the outer circular surface of the circular ring is uniformly distributed with anti-slip grooves.

The utility model has the advantages that: the transfusion needle capable of preventing blood return enables the extrusion block to push the connecting pipe into the arc-shaped groove of the baffle plate through the sliding of the arc-shaped plate to form extrusion interception, when the arc-shaped plate slides to the end, the mounting hole aligns to the other through hole, the support spring presses the ball on the hole opening of the through hole to form limiting, and at the moment, the limiting of the arc-shaped plate can be released only through inserting the operation rod into the through hole, so that the stability of the clamping piece is kept.

Drawings

FIG. 1 is a schematic diagram of the basic structure of the present invention;

FIG. 2 is a sectional view A-A of FIG. 1;

fig. 3 is a partial enlarged view at E in fig. 2;

fig. 4 is a partially enlarged view of fig. 2 at F.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in figures 1-4, the infusion needle capable of preventing blood return provided by the utility model comprises a needle head 1, a connecting pipe 2 is arranged on one side of the needle head 1, a clamping member 3 is arranged on the connecting pipe 2, the clamping member 3 comprises a sleeve pipe 31, the sleeve pipe 31 is sleeved on the outer side of the connecting pipe 2, a baffle 32 is fixedly connected on the inner wall of the sleeve pipe 31, a sliding groove 33 is arranged inside the sleeve pipe 31, an arc plate 34 is slidably connected in the sliding groove 33, one end of the arc plate 34 is fixedly connected with an arc plate 35, an extrusion block 36 is arranged on the outer arc surface of the arc plate 35, the extrusion block 36 is arranged corresponding to the baffle 32, the baffle 32 is provided with an arc groove 321, an installation hole 37 is arranged on the outer arc surface of the arc plate 35, a ball 38 is slidably connected in the installation hole 37, a supporting spring 39 is arranged between the ball 38 and the bottom of the installation hole 37, two through holes 391 are arranged on the inner wall of the sliding groove 33, the through holes 391 are arranged corresponding to the ball 38, the diameter of through-hole 391 is less than the diameter of ball 38, and through-hole 391 communicates the outside setting of sleeve pipe 31, and the sleeve pipe 31 outside is equipped with logical groove 4, and logical groove 4 is linked together with sliding tray 33, and arc 34 one side fixed connection curb plate 5, curb plate 5 stretches out the sleeve pipe 31 outside by leading to groove 4, and the height that curb plate 5 stretches out sleeve pipe 31 excircle is 1-2mm, and the curb plate 5 outside is equipped with anti-skidding line, and the finger of the medical staff of being convenient for promotes curb plate 5 and removes.

Specifically, one end of the outer side of the sleeve 31 is fixedly connected with a ring 6, and anti-slip grooves are uniformly distributed on the outer circular surface of the ring 6; facilitating the medical professional to grasp one end of the cannula 31 with one hand and then perform the operation.

During operation, medical staff takes out the operation stick, insert the through-hole 391 that corresponds with the operation stick, make ball 38 retract in the mounting hole 37, thereby make arc 34 can slide in sliding tray 33, arc 34 slides and makes extrusion piece 36 push in the arc 321 of baffle 32 with connecting pipe 2 and form the extrusion and cut off, arc 34 slides to last time, behind another through-hole 391 is adjusted well to mounting hole 37, supporting spring 39 presses ball 38 and forms spacingly at the entrance to a cave of through-hole 391, only can remove the spacingly of arc 34 through inserting the operation stick in the through-hole 391 this moment, thereby keep the stability of holder 3.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a can prevent transfusion needle of blood return, includes syringe needle (1), syringe needle (1) one side is equipped with connecting pipe (2), be equipped with holder (3) on connecting pipe (2), its characterized in that: the clamping piece (3) comprises a sleeve (31), the sleeve (31) is sleeved on the outer side of the connecting pipe (2), the inner wall of the sleeve (31) is fixedly connected with a baffle (32), a sliding groove (33) is arranged in the sleeve (31), the sliding groove (33) is connected with an arc-shaped plate (34) in a sliding way, one end of the arc-shaped plate (34) is fixedly connected with an arc-shaped plate (35), the outer arc surface of the arc plate (35) is provided with an extrusion block (36), the extrusion block (36) is arranged corresponding to the baffle plate (32), the outer arc surface of the arc plate (35) is provided with a mounting hole (37), the mounting hole (37) is connected with a ball (38) in a sliding way, a supporting spring (39) is arranged between the ball (38) and the bottom of the mounting hole (37), the inner wall of the sliding groove (33) is provided with two through holes (391), and the through holes (391) are arranged corresponding to the balls (38).

2. The infusion needle capable of preventing blood return of claim 1, wherein: the diameter of the through hole (391) is smaller than that of the ball (38), and the through hole (391) is communicated with the outside of the sleeve (31).

3. The infusion needle capable of preventing blood return of claim 1, wherein: the outer side of the sleeve (31) is provided with a through groove (4), the through groove (4) is communicated with a sliding groove (33), one side of the arc-shaped plate (34) is fixedly connected with a side plate (5), and the side plate (5) extends out of the sleeve (31) through the through groove (4).

4. The infusion needle capable of preventing blood return of claim 3, wherein: the height of the side plate (5) extending out of the excircle of the sleeve (31) is 1-2 mm.

5. The infusion needle capable of preventing blood return of claim 3, wherein: and anti-skid grains are arranged on the outer side of the side plate (5).

6. The infusion needle capable of preventing blood return of claim 1, wherein: the extrusion block (36) is arc-shaped, and the baffle plate (32) is provided with an arc-shaped groove (321).

7. The infusion needle capable of preventing blood return of claim 1, wherein: one end of the outer side of the sleeve (31) is fixedly connected with the circular ring (6).

8. The infusion needle capable of preventing blood return of claim 7, wherein: and anti-skidding grooves are uniformly distributed on the outer circular surface of the circular ring (6).