CN214911669U

CN214911669U - Infusion pumping and injecting device and infusion device comprising same

Info

Publication number: CN214911669U
Application number: CN202120605318.8U
Authority: CN
Inventors: 汪海燕; 黄秋萍; 覃小静
Original assignee: Guangdong Hospital of Traditional Chinese Medicine
Current assignee: Guangdong Hospital of Traditional Chinese Medicine
Priority date: 2021-03-22
Filing date: 2021-03-22
Publication date: 2021-11-30
Anticipated expiration: 2031-03-22

Abstract

The utility model discloses an infusion is taken out and is annotated device, including cylinder and piston rod, the piston rod includes the piston handle and cup joints the piston on the piston handle, and the piston is located in the cylinder, outside the piston handle extended to the cylinder by cylinder inside, and be equipped with the prevention in the cylinder the first limit structure of piston motion under the atmospheric pressure effect. The utility model also comprises an infusion device comprising the infusion pumping and injecting device. The transfusion pumping and injecting device is arranged on the joint of the transfusion device, so that the condition of unobstructed pipelines can be conveniently checked, the tube can be flushed after the transfusion is blocked, and the transfusion device is convenient to use during micro-injection; and set up limit structure on the infusion is taken out and is annotated the device, and limit structure can take out the infusion and annotate the process of taking out of annotating the device and carry out spacing buffering to the infusion, makes the infusion take out annotate the device when taking out or annotating, can not cause the infusion to take out annotate the device because take out or annotate and damage because of taking out or annotating that the too violent condition of exerting oneself causes the infusion, or cause the infusion process to infect, or cause the condition such as patient discomfort to appear, carries out the flushing pipe when making things convenient for the microinjection infusion.

Description

Infusion pumping and injecting device and infusion device comprising same

Technical Field

The utility model relates to the field of medical equipment, especially an infusion is taken out and is annotated device and contain device infusion set.

Background

The patient who uses peripheral venous transfusion for a long time, the nurse will inspect whether the infusion pipeline is unobstructed when making a rounds of wards or handing over to a shift, generally all close the transfusion system switch, then the pipeline of pinching patient that sees whether have blood return to judge.

At present, if a transfusion switch is turned on by a patient with high fluid infusion speed, the infusion can be flushed out by dropping the fluid infusion quickly. However, for the patient who uses the micro-pump to pump the liquid in small dose, the blood-back squeezing method is used to judge whether the pipeline is unobstructed, and the following two problems remain: firstly, once extrusion can cause liquid to rapidly enter blood vessels of patients, thus affecting the treatment effect; secondly, blood returns after extrusion, but the pumping speed is unchanged, and the blood returns in minutes or even tens of minutes can enter the body of a patient, so that the needle is easy to be left for blocking. Furthermore, when the syringe for the injection joint of the indwelling needle for peripheral intravenous infusion is used for checking the tube and flushing the tube, a new syringe is required to be used every time the tube is checked to be unobstructed, which is very wasteful.

Therefore, a technical solution to the above problems is needed.

SUMMERY OF THE UTILITY MODEL

In order to make up for some deficiencies in the prior art, the utility model aims to provide an infusion pump and injection device and an infusion device comprising the same.

The utility model discloses a reach its purpose, the technical scheme of adoption as follows: an infusion pump device comprising:

a needle cylinder;

the piston rod comprises a piston handle and a piston sleeved on the piston handle, the piston is arranged in the needle cylinder, and the piston handle extends out of the needle cylinder from the inside of the needle cylinder;

a first limiting structure for preventing the piston from moving under the action of air pressure is arranged in the needle cylinder.

The utility model has the effects that: the utility model discloses take out and annotate and set up first limit structure on the device at the infusion, prevent to lead to the infusion to take out and annotate the device and drop from the transfer line because of pressure is too big when adding the liquid medicine in the transfer line is taken out in the infusion, also can take out the process of annotating of taking out of annotating the device to the infusion and cushion, make the infusion take out annotate the device when taking out or annotating, can not cause the infusion to take out and annotate the device damage because taking out or annotating hard excessively violent, or cause the infusion process to infect, or cause the condition such as patient's discomfort to appear, convenient infusion.

In some embodiments, the first limiting structure is a protrusion, or an annular first groove formed by inward depression of the outer wall of the syringe. Therefore, the piston is limited through the first limiting structure, and the effect of blocking is achieved.

In some embodiments, a second limit structure is disposed in the needle cylinder away from the first limit structure, and an elongated slot for the piston to move is formed between the first limit structure and the second limit structure. Therefore, the second limiting structure limits the piston for the second time, and the long groove space formed by the second limiting structure and the first limiting structure can be used for helping the constant volume of the infusion pumping and injecting device.

In some embodiments, the second limiting structure is a protrusion, or an annular second groove formed by inward depression of the outer wall of the syringe. Therefore, the second groove is also equivalent to an annular bulge relative to the piston, the bulge formed by the convex block or the second groove has a certain blocking effect on the piston, so that the piston cannot enter the long groove spontaneously, the piston is generally made of materials with certain elastic deformation such as rubber, and the piston can successfully enter the long groove by breaking through the obstacle formed by the convex block or the bulge formed by the second groove through temporary elastic deformation under the action of artificial tension.

In some embodiments, the elongated slot is provided with a scale. Therefore, when the infusion pumping and injecting device is used for injecting liquid medicine, the injection amount or the pumping amount can be conveniently observed.

According to another object of the utility model, still provide an infusion set who contains above-mentioned infusion pump and annotate device, infusion set includes:

a liquid inlet pipe;

a transfusion tube;

the liquid inlet pipe and the infusion pipe are connected through the joint, so that the liquid inlet pipe and the infusion pipe are communicated with each other; and

the infusion pumping and injecting device is connected to the joint and can be communicated with the liquid inlet pipe and the infusion pipe through the joint. Therefore, the infusion device is provided with the joint connection between the infusion tube and the liquid inlet tube, the joint is provided with the infusion suction and injection device, when the pipeline is checked after infusion, the infusion device does not need to extrude return blood, only the infusion switch needs to be closed, and the infusion device is directly used for drawing back blood, if the return blood is pushed back to the blood vessel of a patient; if there is not blood that returns after the inspection, can close and keep somewhere the needle and go up the clip, open the transfusion system switch, after the liquid that is dripping is extracted with infusion set, close the infusion switch, open the clip of keeping somewhere the needle, push the liquid medicine of holding the end extraction just taking out in the patient's blood vessel, reach the flush tube purpose, nevertheless extract the liquid medicine and only be limited to the liquid medicine of non-micro-pump income, make things convenient for the inspection pipeline unobstructed after the infusion whether, use when making things convenient for the microinjection.

In some embodiments, the syringe of the infusion pump is provided with a nipple at one end thereof for connection to the connector, and the nipple is connected to the connector such that the nipple end of the infusion pump communicates with the infusion tube and the fluid inlet tube. Therefore, the infusion pump can pump and inject in the infusion tube and the liquid inlet tube through the infusion pump and injection device, and the tube is convenient to wash.

In some embodiments, the joint is a Y-shaped knot three-way joint, the three-way joint is provided with a first joint and a second joint which are detachably connected with the infusion tube and the liquid inlet tube respectively, and the three-way joint is further provided with a third joint connected with the infusion pumping and injecting device. Therefore, the infusion pumping and injecting device, the infusion tube and the liquid inlet tube can be communicated through the three-way joint, and convenience is realized.

In some embodiments, the infusion pump is integral with the third connector. Therefore, when micro-injection is carried out, whether the pipeline is unobstructed or not is checked without an additional injector, the infusion tube and the liquid inlet tube can be sealed, the sealing effect of the infusion tube is better, and infection can be prevented.

In some embodiments, the liquid inlet pipe is also provided with a Murphy's dropper and a flow regulator. Therefore, the liquid is convenient to feed and transfuse.

Drawings

Fig. 1 is a schematic structural view of an infusion pump device according to some embodiments of the present invention;

FIG. 2 is a schematic view of an infusion device in accordance with certain embodiments of the present invention;

FIG. 3 is a block diagram of a joint according to some embodiments of the present invention;

fig. 4 is a schematic structural view of an infusion pumping device according to another embodiment of the present invention.

In the figure: 1. a liquid inlet pipe; 11. a Murphy dropper; 12. a flow regulator; 2. a transfusion tube; 3. a joint; 31. a first joint; 32. a second joint; 33. a third joint; 4. an infusion pump; 41. a limiting structure; 411. a first groove; 412. a second groove; 42. a needle cylinder; 421. a nipple; 422. an opening; 423. calibration; 43. a piston rod; 431. a piston handle; 432. a piston.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 schematically shows an infusion device for flushing an infusion tube in micro-infusion according to the present invention.

Referring to fig. 1 to 3, the infusion device comprises a liquid inlet pipe 1, an infusion tube 2, a joint 3 and an infusion pumping and injecting device 4 arranged on the joint 3, wherein an infusion pump, an infusion bag or an infusion bottle can be connected to the liquid inlet pipe 1, an indwelling needle can be connected to the infusion tube 2, a Murphy's dropper 11 and a flow regulator 12 are further arranged on the liquid inlet pipe 1, the Murphy's dropper 11 can prevent air from dropping during the infusion process, air can be prevented from entering the body along with the infusion, discomfort of a patient can be prevented, the flow regulator 12 is arranged on the liquid inlet pipe 1, and the liquid inlet speed of the liquid inlet pipe 1 can be controlled by sliding a pulley of the flow regulator 12, so that liquid inlet and infusion are facilitated;

further, can dismantle the connection through connecting 3 between feed liquor pipe 1 and the transfer line 2, make feed liquor pipe 1 and transfer line 2 communicate each other, the 4 attach fitting 3 of notes device is taken out in the infusion, make the infusion take out notes device 4 can with feed liquor pipe 1, transfer line 2 intercommunication, conveniently wash the pipe, and the infusion takes out notes device 4 and goes up to set up limit structure 41, and accessible limit structure 41 takes out the infusion and annotates the pump notes process of taking out notes device 4 and cushion. Wherein:

referring to fig. 1, in some embodiments, the infusion pump 4 is a syringe having a capacity of 4 ml. The injector comprises a syringe 42 and a piston rod 43 arranged in the syringe 42, wherein the piston rod 43 comprises a piston handle 431 and a piston 432 sleeved on the piston handle 431, and the piston handle 431 and the piston rod 43 are integrally formed; one end of the syringe 42 is a nipple 421 for connecting with the joint 3, the other end of the syringe 42 is provided with an opening 422, the piston rod 43 and the piston 432 are inserted from the opening 422, so that the piston 432 is arranged in the syringe 42 and can slide along the inner wall of the syringe 42 in the length direction of the syringe 42, the piston handle 431 extends out of the syringe 42 from the inside of the syringe 42, the piston 432 can be pushed to perform piston movement in the syringe 42 by pushing the piston handle 431, the nipple 421 is connected on the joint 3, so that the nipple 421 end of the injector is communicated with the infusion tube 2 and the liquid inlet tube 1, and the infusion tube 2 and the liquid inlet tube 1 can be pumped and injected by the injector, thereby facilitating tube flushing.

The limiting structure 41 comprises a first limiting structure and a second limiting structure which are arranged in the needle cylinder and prevent the piston 432 from moving under the action of air pressure, the first limiting structure can limit the piston at a first position of the needle cylinder 42, the second limiting structure can limit the piston at a second position of the needle cylinder 42, the second limiting structure is arranged in the needle cylinder 42 and far away from the first limiting structure, a long groove for the piston to move is formed between the first limiting structure and the second limiting structure, scales 423 are arranged on the long groove, and when the infusion pumping device is used for injecting liquid medicine, the injection amount can be observed conveniently. In some embodiments, the first and second stops are first and

second grooves

411, 412, respectively, on the syringe 42. The first groove 411, the second groove 412 and the syringe 42 are integrally formed through injection molding, the first groove 411 and the second groove 412 are both annular grooves formed by inward recess of the outer wall of the syringe 42, the first groove 411 is arranged at one end close to the opening 422, the second groove 412 is arranged at one end close to the nipple 421, when the piston 432 performs piston movement in the syringe 42, the piston 432 can move in a long groove formed between the first groove 411 and the second groove 412, when the piston 432 draws liquid, the first groove 411 limits and buffers the piston 432, so that the syringe cannot fall off due to too fast drawing liquid and too violent force, and blood return of a patient is serious, when liquid is injected, the second groove 412 limits and buffers the piston 432, infusion is not easy to be too violent due to too high pressure, discomfort of the patient is caused, the limiting structure 41 can limit the piston 432, and cannot influence the movement of the piston 432.

Referring to fig. 3, the joint 3 is a three-way joint with a Y-shaped structure, the three-way joint is provided with a first joint 31 and a second joint 32 which are respectively connected with the infusion tube 2 and the liquid inlet tube 1, in some embodiments, the first joint 31 and the second joint 32 are respectively connected with the infusion tube 2 and the liquid inlet tube 1 in a glue joint manner, so that the infusion tube 2 and the liquid inlet tube 1 can be communicated through the three-way joint for infusion, the three-way joint is further provided with a third joint 33 for installing an injector, the injector and the third joint 33 are of an integrated structure, so that the injector can seal the infusion tube 2 and the liquid inlet tube 1 from the joint 3, the sealing effect is better, infection can be prevented, the injector cannot fall off from the joint 3 due to overlarge pressure, liquid flows out, liquid pollution and drug amount loss are caused, the joint 3 can be communicated with the injector, the infusion tube 2 and the liquid inlet tube 1, and tube flushing is convenient.

The working principle is as follows: during micro-injection, the infusion tube 1 is connected with an infusion pump, the infusion tube 2 is connected with an indwelling needle on the body of a patient, the indwelling needle can be provided with a clamp, the clamp can block infusion, when a blood vessel for micro-injection is blocked, the regulating pulley of the flow regulator 12 is regulated to the tightest position, so that the liquid inlet tube 1 can not feed liquid and can not discharge liquid, the infusion is closed, blood is directly pumped back by using an injector integrally connected with the third joint 33 of the joint 3, and if the blood is pushed back to the blood vessel of the patient; if there is no blood return after the inspection, can close and keep somewhere the clip on the needle, open flow regulator 12, after the liquid that is dripping is extracted with the syringe on the joint 3, adjust flow regulator 12 regulating pulley to tightest position again, close the infusion, open the clip of keeping somewhere the needle, push the liquid medicine that just the syringe extracted in the patient's blood vessel, reach the flush tube purpose, can examine the unobstructed condition of pipeline, the extraction liquid medicine is also only limited to the liquid medicine that the non-trace pump was gone into, make things convenient for the trace injection flush tube. And the syringe is in drawing and annotating the in-process, because set up first limit structure, the syringe can not lead to the piston to drop because drawing liquid is too fast, hard excessively, makes the patient return blood seriously, syringe and joint structure as an organic whole make the syringe also can not lead to the syringe to drop from three way connection because pressure is too big, cause the liquid outflow, cause the liquid medicine pollution, reach the dose and run off, the second limit structure who sets up makes the syringe can not cause the patient to be uncomfortable because pressure too big makes the infusion too hard.

The utility model is provided with the joint connection between the transfusion tube and the liquid inlet tube, and the transfusion pumping and injecting device is arranged on the joint, thereby being convenient for checking the smooth condition of the pipeline, flushing the tube after the transfusion is blocked and being convenient for using during micro-injection; and set up limit structure on the infusion is taken out and is annotated the device, and limit structure can take out the infusion and annotate the process of taking out of annotating the device and carry out spacing buffering to the infusion, makes the infusion take out annotate the device when taking out or annotating, can not cause the infusion to take out annotate the device because take out or annotate and damage because of taking out or annotating that the too violent condition of exerting oneself causes the infusion, or cause the infusion process to infect, or cause the condition such as patient discomfort to appear, carries out the flushing pipe when making things convenient for the microinjection infusion.

Fig. 4 shows another embodiment of the infusion pump, which differs from the infusion pump of fig. 1 in that the first and second stops are protrusions on the inside wall of the barrel 42.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. Infusion is taken out and is annotated device, its characterized in that includes:

a needle cylinder;

and a first limiting structure for preventing the piston from moving under the action of air pressure is arranged in the needle cylinder.

2. The infusion pump according to claim 1, wherein the first stopper is a protrusion or an annular first groove formed by inward depression of the outer wall of the cylinder.

3. The infusion pump according to claim 1 or 2, wherein a second stopper is provided in the cylinder away from the first stopper, and an elongated slot for the piston to move is formed between the first stopper and the second stopper.

4. The infusion pump according to claim 3, wherein the second stopper is a protrusion or an annular second groove formed by inward depression of the outer wall of the cylinder.

5. The infusion pump according to claim 3, wherein the elongated slot is graduated.

6. An infusion device, comprising:

a liquid inlet pipe;

a transfusion tube;

the infusion pump device of any one of claims 1-5, connected to the fitting, the infusion pump device being in communication with the fluid inlet tube and the infusion tube through the fitting.

7. The infusion device as claimed in claim 6, wherein a nipple is provided at one end of the cylinder of the infusion pump, and the nipple is connected to the connector so that the infusion pump communicates with the infusion tube and the fluid inlet tube.

8. The infusion device as claimed in claim 7, wherein the connector is a tee connector having a Y-shaped configuration, the tee connector having first and second connectors detachably connected to the infusion tube and the fluid inlet tube, respectively, the tee connector having a third connector connected to the infusion pumping device.

9. The infusion device as claimed in claim 8, wherein the infusion pump is of unitary construction with the third connector.

10. The infusion device as claimed in any one of claims 6 to 9, wherein a Murphy's dropper and a flow regulator are further provided on the inlet tube.