CN214911625U

CN214911625U - Transfusion system with suction function

Info

Publication number: CN214911625U
Application number: CN202120228518.6U
Authority: CN
Inventors: 侯雪梅; 张雪芹
Original assignee: Guangyuan Central Hospital
Current assignee: Guangyuan Central Hospital
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2021-11-30
Anticipated expiration: 2031-01-27

Abstract

The utility model discloses an infusion apparatus with suction function relates to the transfusion system field, provides an infusion apparatus that helps puncture blood return. The infusion apparatus with the suction function comprises an infusion tube and a suction device, the suction device comprises a connecting tube and a suction device, the suction device comprises a suction tube, a piston rod, a spring and a positioning structure, the front end of the suction tube is communicated with the connecting tube, the piston is positioned at the front end in the suction tube and matched with the suction tube, the piston rod is connected with the piston, the positioning structure limits the piston rod to move, and the spring supports the piston rod backwards; both ends of the connecting pipe are connected with the transfusion pipe. The utility model discloses can avoid the puncture success and in time return the blood and arouse the erroneous judgement, do benefit to the accuracy and judge whether the pjncture needle pierces the blood vessel, the adjustment that does not need when avoiding the puncture to do benefit to the puncture and go on fast, reduce patient's misery.

Description

Transfusion system with suction function

Technical Field

The utility model relates to an infusion apparatus field especially relates to an infusion apparatus with suction function.

Background

The conventional infusion apparatus comprises an infusion tube, a puncture needle, a speed regulator, a Murphy's dropper and other structures. The puncture needle pierces into the blood vessel during transfusion, and whether the puncture is successful is judged by observing whether blood returns in the transfusion tube. However, in clinical practice, some patients, especially the old and children, have successfully punctured the blood vessel with the puncture needle, but have no or insignificant blood return, thereby easily causing misjudgment. If the puncture is successful and the puncture is not successful, the puncture operation needs to be continued, which increases the puncture time and aggravates the pain of the patient.

In order to avoid the above situation, an infusion apparatus with a suction function is provided, which is beneficial to blood return through suction, so as to avoid the situation that the puncture is successful but the blood does not return, and accurately judge whether the puncture is successful or not. ZL200620032737.2 discloses a negative pressure infusion set, which is essentially characterized in that the negative pressure generated by the rebound of an infusion tube and a Murphy dropper after extrusion plays a role in suction. The resilience of the infusion tube and the Murphy's dropper is limited, and the generated suction effect is not obvious. In addition, the suction operation of the infusion apparatus needs to extrude the infusion tube and the Murphy's dropper, and the speed regulator and the negative pressure control device are switched on and off, so that the operation is difficult to complete by one hand and is inconvenient.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: provides an infusion set which is helpful for puncture and blood return.

The technical scheme adopted for solving the problems is as follows: the infusion apparatus with the suction function comprises an infusion tube and a suction device, the suction device comprises a connecting tube and a suction device, the suction device comprises a suction tube, a piston rod, a spring and a positioning structure, the front end of the suction tube is communicated with the connecting tube, the piston is positioned at the front end in the suction tube and matched with the suction tube, the piston rod is connected with the piston, the positioning structure limits the piston rod to move, and the spring supports the piston rod backwards; both ends of the connecting pipe are connected with the transfusion pipe.

Further, the method comprises the following steps: the suction device comprises a suction tube cover connected to the rear end of the suction tube, the suction tube cover limiting the piston to move out of the suction tube.

Further, the method comprises the following steps: the rear end of the piston rod is provided with a supporting flange, the spring is sleeved on the piston rod, and two ends of the spring are respectively abutted against the suction pipe cover and the supporting flange.

Further, the method comprises the following steps: the positioning structure is connected with a positioning pin, the positioning pin is arranged along the radial direction of the piston rod, and the positioning pin is inserted into the suction pipe cover and the piston rod.

Further, the method comprises the following steps: the suction device is parallel to the connecting pipe.

The utility model has the advantages that: 1. when puncturing, puncturing is carried out according to the existing puncturing mode; if blood returns in time, the puncture needle is inserted into the blood vessel; if blood does not return, it means that blood vessel is not penetrated, or blood does not return though it is penetrated. When blood does not return, the speed regulator is closed and the limit of the positioning structure on the piston rod is released, and the piston rod and the piston move backwards due to the elastic force of the spring, so that negative pressure is generated in the infusion tube to realize suction. If blood does not return, the puncture needle does not puncture the blood vessel, and the puncture is required to be adjusted until blood returns; at this time, blood returns, indicating that the puncture needle has punctured the blood vessel. It is thus clear that the utility model discloses can avoid the puncture success and in time return the blood and arouse the erroneous judgement, do benefit to the accuracy and judge whether the pjncture needle pierces the blood vessel, the adjustment that does not need when avoiding the puncture to do benefit to the puncture and go on fast, reduce patient's misery.

2. The reasonable parameter that sets up the spring can make suction force enough, guarantees the utility model discloses a reliability.

Drawings

FIG. 1 is a front structural view of an infusion set with a suction function;

FIG. 2 is a view of the aspirator;

labeled as: puncture needle 1, aspirator 2, connecting tube 21, suction device 22, suction tube 221, piston 222, piston rod 223, suction tube cover 224, positioning pin 225, spring 226, communicating hole 23, infusion tube 3, and speed controller 4.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

As shown in fig. 1 and 2, the infusion set with the suction function comprises an infusion tube 3 and an aspirator 2, the aspirator 2 comprises a connecting tube 21 and a suction device 22, the suction device 22 comprises a suction tube 221, a piston 222, a piston rod 223, a spring 226 and a positioning structure, the front end of the suction tube 221 is communicated with the connecting tube 21, the piston 222 is positioned at the front end in the suction tube 221 and matched with the suction tube 221, the piston rod 223 is connected with the piston 222, the positioning structure limits the movement of the piston rod 223, and the spring 226 supports the piston rod 223 backwards; both ends of the connecting tube 21 are connected with the infusion tube 3.

Except for the aspirator 2, the other structures of the infusion set are the same as the prior art, namely, the structures of the puncture needle 1, the speed regulator 4 and the like are also provided, and the speed regulator 4 is positioned behind the aspirator 2.

When puncturing, puncturing is carried out according to the existing puncturing mode; if blood returns in time, the puncture needle 1 is inserted into the blood vessel; if blood does not return, it means that blood vessel is not penetrated, or blood does not return though it is penetrated. When blood is not returned, the speed regulator 4 is closed and the limit of the positioning structure on the piston rod 223 is released, and the piston rod 223 and the piston 222 are moved backward by the elastic force of the spring 226, so that negative pressure is generated in the infusion tube 3 to realize suction. If blood does not return, the puncture needle 1 does not puncture the blood vessel, and the puncture needs to be adjusted until blood returns; when blood returns at this time, the puncture needle 1 pierces the blood vessel. It is thus clear that the utility model discloses can avoid the puncture success and in time return the blood and arouse the erroneous judgement, do benefit to the accuracy and judge whether pjncture needle 1 pierces the blood vessel, the adjustment that does not need when avoiding the puncture to do benefit to the puncture and go on fast, reduce patient's misery.

The piston 222 cannot move out of the suction tube 221, which could otherwise cause liquid to leak out. For this purpose, the suction device 22 preferably includes a suction tube cover 224, the suction tube cover 224 is connected to the rear end of the suction tube 221, and the suction tube cover 224 restricts the movement of the piston 222 out of the suction tube 221.

The specific arrangement of the spring 226 is preferably as follows: the piston rod 223 has a support flange 2231 at the rear end thereof, the spring 226 is sleeved on the piston rod 223, and the two ends of the spring 226 respectively abut against the suction pipe cover 224 and the support flange 2231.

The specific arrangement of the positioning structure is preferably as follows: the positioning structure is connected with a positioning pin 225, the positioning pin 225 is arranged along the radial direction of the piston rod 223, and the positioning pin 225 is inserted into the suction pipe cover 224 and the piston rod 223. Thus, the piston rod 223 can be released from the restriction by pulling out the positioning pin 225, and the piston rod 223 can move backward under the action of the spring 226. The operation is simple and can be performed with one hand. To facilitate the extraction of the positioning pin 225, a pull ring may be attached to the positioning pin 225.

The suction device 22 may be angled with respect to the connection tube 21, but in order to reduce the space occupied by the aspirator 2, it is preferred that the suction device 22 be parallel to the connection tube 21.

Claims

1. Transfusion system with suction function includes transfer line (3), its characterized in that: the suction device comprises a suction device (2), wherein the suction device (2) comprises a connecting pipe (21) and a suction device (22), the suction device (22) comprises a suction pipe (221), a piston (222), a piston rod (223), a spring (226) and a positioning structure, the front end of the suction pipe (221) is communicated with the connecting pipe (21), the piston (222) is positioned at the front end in the suction pipe (221) and matched with the suction pipe (221), the piston rod (223) is connected with the piston (222), the positioning structure limits the movement of the piston rod (223), and the spring (226) supports the piston rod (223) backwards; both ends of the connecting pipe (21) are connected with the transfusion pipe (3).

2. The infusion set with suction function according to claim 1, wherein: the suction device (22) comprises a suction pipe cover (224), the suction pipe cover (224) is connected to the rear end of the suction pipe (221), and the suction pipe cover (224) limits the piston (222) from moving out of the suction pipe (221).

3. The infusion set with suction function according to claim 2, wherein: the rear end of the piston rod (223) is provided with a supporting flange (2231), the spring (226) is sleeved on the piston rod (223), and two ends of the spring (226) are respectively abutted against the suction pipe cover (224) and the supporting flange (2231).

4. The suction-enabled infusion set according to claim 3, wherein: the positioning structure is connected with a positioning pin (225), the positioning pin (225) is arranged along the radial direction of the piston rod (223), and the positioning pin (225) is inserted into the suction pipe cover (224) and the piston rod (223).

5. The suction-enabled infusion set according to claim 4, wherein: the suction device (22) is parallel to the connecting pipe (21).