CN215780558U - Improved disposable continuous infusion pump suitable for transarterial administration - Google Patents
Improved disposable continuous infusion pump suitable for transarterial administration Download PDFInfo
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- CN215780558U CN215780558U CN202122200244.2U CN202122200244U CN215780558U CN 215780558 U CN215780558 U CN 215780558U CN 202122200244 U CN202122200244 U CN 202122200244U CN 215780558 U CN215780558 U CN 215780558U
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Abstract
The utility model relates to an improved disposable continuous infusion pump suitable for arterially administration, wherein one end of a drug injection connecting pipe extends into an elastic drug storage bag and is communicated with the elastic drug storage bag through an opening on the pipe wall, and the other end of the drug injection connecting pipe is used for being connected with an arterial catheter; one end of the elastic medicine storage bag and one end of the medicine injection connecting pipe are arranged in the bottle body; one end of the gas injection connecting pipe extends into the bottle body, and the other end of the gas injection connecting pipe is used for being connected with a pressure gas source; the inlet of the bottle body forms a seal with the medicine injection connecting pipe and the air injection connecting pipe. The utility model adds a one-way valve gas injection pipe which pushes air outwards to the elastic liquid storage bag to keep the infusion speed, injects gas into the sealed bottle through the gas injection pipe to increase the external pressure of the liquid storage bag, recovers the pressure in the bag which is reduced due to the reduction of the liquid amount in the liquid storage bag, and keeps the stability of the infusion speed, thereby ensuring that the chemotherapy drugs can be continuously, uniformly and quantitatively input into a human body when the drugs are administered through arteries, and ensuring that the drugs are more accurately and safely used.
Description
Technical Field
The utility model relates to a disposable continuous infusion pump, in particular to an improved disposable continuous infusion pump suitable for transarterial administration.
Background
The disposable continuous infusion pump is a light miniature medical apparatus and utilizes an elastic medicine-storing bag to infuse medicine liquor. When the medicine liquid is filled in the medicine storage bag, the medicine liquid can be infused uniformly and quantitatively at the flow rate indicated by the product under the action of continuous internal pressure, namely elastic contraction force.
Fluorouracil (5-Fu) is a common anti-tumor chemotherapeutic drug and is mainly applied to digestive tract tumors such as intestinal cancer, liver cancer and the like. Because of its half-life after plasma entry of 10-20 minutes, slow administration at sustained high concentrations is required, with a duration of infusion of typically 48 hours. By using the disposable continuous infusion pump, 5-Fu can be slowly infused for a long time, and is most commonly used for the whole-body chemotherapy of tumors in an intravenous administration mode clinically due to the convenient use. Continuous perfusion chemotherapy (HAIC) through the hepatic artery is one of the methods for treating liver cancer. After completing the hepatic artery intubation, a catheter is placed at the hepatic artery, and then the chemotherapy drugs are continuously infused through the catheter. The common medicine in the adopted chemotherapy scheme is 5-Fu, continuous infusion is generally required for 24 to 48 hours, and the medicine is also taken by a disposable continuous infusion pump, and the infusion pump which is most commonly used clinically at present infuses 5-Fu into a human body at the speed of 5 ml/h.
However, in the use process of hepatic artery continuous perfusion chemotherapy, the infusion speed of the existing disposable continuous infusion pump is not stable, and the infusion speed is gradually reduced along with the gradual reduction of the medicine amount in the medicine storage bag. Not only prolonging the medication time of patients, but also possibly influencing the curative effect of the medicine. The main reason is that the elastic contractive force of the medicine storage bag is insufficient after the medicine is taken. This is generally not the case when administered intravenously, since central venous pressures are 5-12cmH2O, while mean arterial pressures are 70-102mmHg, which are about ten times higher than venous pressures, and higher if the patient has combined hypertension. As the amount of drug in the elastic reservoir decreased, its elastic contractive force decreased and was insufficient to continue the administration at a rate of 5ml/h after resisting the higher arterial pressure.
In summary, the conventional disposable continuous infusion pump is not enough to maintain a stable infusion speed against a high arterial pressure because the elastic contractive force of the elastic drug storage bag is weakened when the infusion is performed to the artery.
Disclosure of Invention
The utility model aims to provide an improved disposable continuous infusion pump suitable for transarterial administration, which solves the problem of unstable speed of the continuous infusion pump during transarterial administration.
The utility model adopts the following technical scheme:
an improved disposable continuous infusion pump suitable for arterially administration comprises a bottle body 1, a drug injection connecting pipe 4, an air injection connecting pipe 3 and an elastic drug storage bag 2; one end of the medicine injection connecting pipe 4 extends into the elastic medicine storage bag 2 and is communicated with the elastic medicine storage bag 2 through an opening of the pipe wall, and the other end of the medicine injection connecting pipe is used for being connected with an arterial catheter; one end of the elastic medicine storage bag 2 and one end of the medicine injection connecting pipe 4 are arranged in the bottle body 1; one end of the gas injection connecting pipe 3 extends into the bottle body 1, and the other end is used for being connected with a pressure gas source; the inlet of the bottle body 1 is sealed with a medicine injection connecting pipe 4 and an air injection connecting pipe 3.
Preferably, the bottle also comprises a connecting cap 5, and the connecting cap 5 is arranged at the bottleneck of the bottle body; the medicine injection connecting pipe 4 and the air injection connecting pipe 3 hermetically penetrate through the connecting cap 5.
Preferably, the other end of the gas injection connecting pipe 3 is provided with a one-way valve.
Further, the pressure air source is connected with the one-way valve through an air needle.
Preferably, the upper portion of the bottle body 1 is in a frustum shape, and the lower portion thereof is in a cylindrical shape.
Further, the connection cap 5 is cylindrical and connected to the frustum-shaped portion of the bottle body 1.
Preferably, the bottle body 1 is a closed acryl bottle body.
The utility model has the beneficial effects that: on the basis of the existing disposable continuous infusion pump, a one-way valve gas injection pipe which pushes air outwards to an elastic liquid storage bag to keep the infusion speed is added, the gas is injected into a closed bottle through the gas injection pipe to increase the external pressure of the liquid storage bag, the internal pressure of the bag which is reduced due to the reduction of the liquid amount in the liquid storage bag is recovered, and the stability of the infusion speed is kept, so that the chemotherapeutic drug can be continuously, uniformly and quantitatively infused into a human body when the drug is administered through an artery, and the use of the drug is more accurate and safer.
Drawings
FIG. 1 is a schematic diagram of an improved single use continuous infusion pump suitable for transarterial administration in accordance with the present invention.
In the figure, 1, a bottle body, 2, an elastic medicine storage bag, 3, an air injection connecting pipe, 4, a medicine injection connecting pipe and 5, a connecting cap.
Detailed Description
The utility model is further described with reference to the following figures and specific examples.
Referring to fig. 1, an improved disposable continuous infusion pump suitable for transarterial administration comprises a bottle body 1, a drug injection connecting pipe 4, an air injection connecting pipe 3, and an elastic drug storage bag 2; one end of the medicine injection connecting pipe 4 extends into the elastic medicine storage bag 2 and is communicated with the elastic medicine storage bag 2 through an opening of the pipe wall, and the other end of the medicine injection connecting pipe is used for being connected with an arterial catheter; one end of the elastic medicine storage bag 2 and one end of the medicine injection connecting pipe 4 are arranged in the bottle body 1; one end of the gas injection connecting pipe 3 extends into the bottle body 1, and the other end is used for being connected with a pressure gas source; the inlet of the bottle body 1 is sealed with a medicine injection connecting pipe 4 and an air injection connecting pipe 3.
In this embodiment, referring to fig. 1, it further comprises a connection cap 5, wherein the connection cap 5 is installed at the bottleneck of the bottle body; the medicine injection connecting pipe 4 and the air injection connecting pipe 3 hermetically penetrate through the connecting cap 5.
In this embodiment, the other end of the gas injection connecting pipe 3 is provided with a one-way valve, and a pressure gas source is connected with the one-way valve through an air needle. Can realize one-way gas injection pressurization.
In this embodiment, referring to fig. 1, the upper portion of the bottle body 1 has a frustum shape and the lower portion has a cylindrical shape.
In this embodiment, referring to fig. 1, the coupling cap 5 has a cylindrical shape and is coupled to a frustum-shaped portion of the bottle body 1.
In this embodiment, the bottle 1 is a closed acrylic bottle.
Specifically, the length of the body 1 of the entire apparatus is about 15cm, and a drug injection connection tube 4 and a gas injection connection tube 1 are attached thereto. The elastic medicine storage bag 2 is connected with a medicine injection connecting pipe 4, medicine liquid is injected from the medicine injection connecting pipe 4, the medicine liquid is connected with an arterial catheter through the medicine injection connecting pipe 4, and the medicine liquid is input into the body of a patient from the medicine liquid. The gas injection connecting pipe 3 provided with the one-way valve can be connected with an air needle to inject air into the bottle body 1, the injected air quantity can be adjusted at any time according to the infusion speed, and the design of the one-way valve can avoid gas leakage. The connecting cap 5 plays a role in connecting the gas injection pipe 3, the drug injection pipe 4 and the acrylic bottle body 1.
The present embodiment makes certain improvement to the existing infusion pump, mainly designs the empty bottle outside the medicine storage bag into a closed type, and adds an air injection pipe. When the retraction force of the elastic medicine storage bag is enough to stably output the liquid medicine, the pressure in the bottle body is kept stable by injecting air regularly; along with the reduction of the liquid medicine, when the retraction force is not enough to stably output the liquid medicine, the air injection is increased through the air injection pipe, the liquid medicine is pushed out by utilizing the extrusion of an external force to the medicine storage bag, so that the error of the infusion speed is reduced to the maximum extent, the timeliness of the medicine is ensured, and the pain of a patient caused by the prolonged infusion time is not increased.
With continued reference to fig. 1, 1 is a sealed acrylic bottle body, which contains an elastic medicine storage bag and a gas injection pipe, and the sealed design can ensure the balance of the air pressure in the bottle and avoid gas leakage; 2 is an elastic medicine storage bag, after the medicine liquid is injected, the medicine liquid can be delivered into the human body through the infusion pipeline by the elastic retraction force of the elastic medicine storage bag; 3, the one-way valve gas injection connecting pipe can be connected with the hollow needle, the size design is matched with the diameter of the medical hollow needle, the hollow needle can be conveniently inserted to inject air, the injected air can be determined according to the walking speed of the elastic medicine storage bag, and the design of the one-way valve avoids gas leakage; 4 is a medicine injection connecting pipe, the medicine liquid is injected into the elastic medicine storage bag from the medicine injection connecting pipe and then is connected with the arterial catheter, and the medicine liquid is injected into a human body; and 5, a connecting cap is used for connecting the one-way valve gas injection connecting pipe and the medicine injection connecting pipe with the sealed acrylic bottle body and keeping the connecting port completely sealed and airtight.
When the method is used, taking hepatic artery continuous perfusion chemotherapy as an example, after an operating doctor finishes hepatic artery catheterization in an interventional operating room, a patient returns to a ward to start to receive chemotherapy drug infusion, a chemotherapy drug scheme is set by the doctor, and the infusion time of 5-Fu is different from 24 hours to 48 hours according to different schemes. After the scheme is determined, the infused chemotherapy drugs are prepared and the liquid medicine is infused into the elastic medicine storage bag through the medicine infusion connecting pipe. Then, the drug injection connecting tube is connected to the hepatic artery catheter, and the elastic drug storage bag injects the drug solution into the human body at a relatively fixed speed by the self elastic retraction force. If the infusion speed is 5ml/h, 5ml of air is injected into the bottle body through the one-way valve gas injection connecting pipe every hour so as to ensure the pressure in the bottle body to be balanced. The infusion speed is observed by a ward nurse every hour, if the infusion speed is found to be slow, the air injection amount can be increased according to the actual situation, and the elastic medicine storage bag is extruded by increasing the pressure in the bottle body, so that the medicine infusion speed is accelerated, and the medicine infusion is completed within the set time as far as possible. After the medicine infusion is finished, the hepatic artery catheter and the infusion pump are integrally pulled out.
While the utility model has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (7)
1. An improved single use continuous infusion pump adapted for transarterial administration, comprising:
comprises a bottle body (1), a medicine injection connecting pipe (4), a gas injection connecting pipe (3) and an elastic medicine storage bag (2);
one end of the medicine injection connecting pipe (4) extends into the elastic medicine storage bag (2) and is communicated with the elastic medicine storage bag (2) through an opening on the pipe wall, and the other end of the medicine injection connecting pipe is connected with an arterial catheter;
the elastic medicine storage bag (2) and one end of the medicine injection connecting pipe (4) are arranged in the bottle body (1);
one end of the gas injection connecting pipe (3) extends into the bottle body (1), and the other end of the gas injection connecting pipe is connected with a pressure gas source;
the inlet of the bottle body (1) is sealed with the medicine injection connecting pipe (4) and the gas injection connecting pipe (3).
2. The improved single use continuous infusion pump adapted for transarterial administration of claim 1, wherein: the bottle also comprises a connecting cap (5), and the connecting cap (5) is arranged at the bottleneck of the bottle body; the medicine injection connecting pipe (4) and the gas injection connecting pipe (3) penetrate through the connecting cap (5) in a sealing mode.
3. The improved single use continuous infusion pump adapted for transarterial administration of claim 1, wherein: the other end of the gas injection connecting pipe (3) is provided with a one-way valve.
4. The improved single use continuous infusion pump adapted for transarterial administration of claim 3, wherein: the pressure air source is connected with the one-way valve through an air needle.
5. The improved single use continuous infusion pump adapted for transarterial administration of claim 2, wherein: the upper part of the bottle body (1) is in a frustum shape, and the lower part of the bottle body is in a cylindrical shape.
6. The improved single use continuous infusion pump adapted for transarterial administration of claim 5, wherein: the connecting cap (5) is cylindrical and is connected with the frustum-shaped part of the bottle body (1).
7. The improved single use continuous infusion pump adapted for transarterial administration of claim 1, wherein: the bottle body (1) is a closed acrylic bottle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122200244.2U CN215780558U (en) | 2021-09-13 | 2021-09-13 | Improved disposable continuous infusion pump suitable for transarterial administration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122200244.2U CN215780558U (en) | 2021-09-13 | 2021-09-13 | Improved disposable continuous infusion pump suitable for transarterial administration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215780558U true CN215780558U (en) | 2022-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122200244.2U Active CN215780558U (en) | 2021-09-13 | 2021-09-13 | Improved disposable continuous infusion pump suitable for transarterial administration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215780558U (en) |
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2021
- 2021-09-13 CN CN202122200244.2U patent/CN215780558U/en active Active
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