CN219230989U

CN219230989U - Backflow-preventing infusion catheter

Info

Publication number: CN219230989U
Application number: CN202320790055.1U
Authority: CN
Inventors: 陈涛; 陈勇; 蒲淳; 梁孟秋; 雷雪
Original assignee: No 3 Peoples Hospital of Chengdu
Current assignee: No 3 Peoples Hospital of Chengdu
Priority date: 2023-04-11
Filing date: 2023-04-11
Publication date: 2023-06-23
Anticipated expiration: 2033-04-11

Abstract

The utility model relates to the technical field of medical appliances, in particular to a backflow-preventing infusion catheter. The infusion bag comprises an infusion bag, wherein a bottle stopper is arranged on the lower surface of the infusion bag, one end, far away from the infusion bag, of the bottle stopper is communicated with a needle head, one end of the needle head is fixedly communicated with a hose, the circular arc surface of the hose is provided with an adjusting structure, the adjusting structure comprises a semipermeable membrane, a three-way pipe and two bifurcation pipes, one end of the three-way pipe is fixedly communicated with the hose, the cross section of the three-way pipe is U-shaped, the two bifurcation pipes are respectively fixedly communicated with the circular arc surface of the hose, the semipermeable membrane is fixedly connected with the inner wall of the needle head, and the circular arc surface of the hose is fixedly connected with three hard pipes. The problem that in the infusion process, if air enters a lower catheter in case of improper treatment, a blood return phenomenon can occur, and the blood return phenomenon can cause that the catheter cannot continue infusion due to air bubble embolism is solved.

Description

Backflow-preventing infusion catheter

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a backflow-preventing infusion catheter.

Background

The infusion catheter is composed of a hose, a hard tube, and the like, and is a conduit through which a liquid medicine flows when a patient is infused intravenously.

The utility model discloses an infusion catheter with the bulletin number of CN214129884U, which relates to the technical field of medical appliances and aims to solve the problems that the prior clinical patient using a breathing machine commonly adopts an injector to drop medicine on the trachea, the time is tens of minutes for the first time in one hour generally, the long-time repeated opening of a breathing machine pipeline is easy to cause difficulty and asynchronism to the inspiration of the patient, the patient is uncomfortable, intolerant and affects the treatment effect in the auxiliary breathing treatment process of a noninvasive breathing machine, the nursing work is heavy, the time and the work cost are increased, and a nurse is more hard to operate for a long time. Including thin hose, middle hard tube and have elastic outer lane hose, the fixed cover of middle hard tube is established at thin hose outer wall, the fixed cover of outer lane hose is established at middle hard tube outer wall.

With respect to the above-mentioned matters, the inventors consider that the following technical drawbacks exist: in the infusion process, if air enters the lower catheter in case of improper treatment, a blood return phenomenon can occur, and the blood return phenomenon can cause that the catheter cannot continue to infuse due to air bubble embolism.

Disclosure of Invention

The utility model aims to solve the defect that in the prior art, if air enters a lower catheter in case of improper treatment, the blood return phenomenon can occur, and the blood return phenomenon can cause the catheter to be incapable of continuing to infuse due to air bubble embolism.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides an anti-reflux infusion catheter, includes the infusion bag, the lower surface mounting of infusion bag has the bottle plug, the bottle plug is kept away from the one end intercommunication of infusion bag and is had the syringe needle, the one end fixed intercommunication of syringe needle has the hose, the arc surface of hose is equipped with adjusting structure, adjusting structure includes semi-permeable membrane, three-way pipe and two bifurcation pipes, the one end and the hose fixed intercommunication of three-way pipe, the cross-section of three-way pipe is "U" shape, two bifurcation pipes respectively with the arc surface fixed intercommunication of hose, semi-permeable membrane and the inner wall fixed connection of syringe needle.

The effects achieved by the components are as follows: through setting up adjusting structure, the convenience that bifurcation pipe and three-way pipe can be to different liquid medicine of hose internal injection, the semipermeable membrane can only pass through liquid, can't pass through the air to avoid the liquid medicine backward flow.

Preferably, the circular arc surface of the hose is fixedly connected with three hard pipes, and the hard pipes are uniformly distributed on the circular arc surface of the hose.

The effects achieved by the components are as follows: when a patient infuses, the hard tube can avoid the flexible tube from bending as much as possible, thereby improving the practicability of the infusion catheter.

Preferably, the arc surfaces of the three hard pipes are fixedly connected with connecting ropes, and the connecting ropes are elastic ropes.

The effects achieved by the components are as follows: after the hose is used, the connecting rope can be wound on the hose, so that the hose can be folded and stored conveniently.

Preferably, one end of each of the two bifurcation pipes is fixedly connected with a sealing ring, and the sealing rings are attached to the rubber plugs.

The effects achieved by the components are as follows: the sealing ring can improve the tightness of the bifurcation pipe, thereby avoiding the outflow of liquid medicine.

Preferably, the arc surface of hose is equipped with auxiliary structure, auxiliary structure includes the adapter ring, adapter ring and hose fixed connection, the inner wall fixedly connected with three reference column of adapter ring, the arc surface rotation of reference column is connected with the locating plate, one side screw thread of locating plate wears to be equipped with the screw rod, screw rod and reference column looks butt.

The effects achieved by the components are as follows: through setting up auxiliary structure, before being connected the bottle plug on syringe needle and the infusion bag, can adjust the locating plate to can be to carrying out quick location, make it can insert in the bottle plug fast.

Preferably, the circular arc surface of the positioning column is sleeved with a coil spring, and two ends of the coil spring are fixedly connected with the positioning plate and the connecting ring respectively.

The effects achieved by the components are as follows: after the screw rod is separated from the positioning column, the coil spring can drive the positioning plate to rotate towards the bottle stopper all the time, so that the positioning plate can be abutted against the bottle stopper all the time in the process of inserting the needle into the bottle stopper, and the positioning plate is more convenient for personnel to use.

Preferably, an auxiliary groove is formed in one side of the positioning plate, and the auxiliary groove is abutted against the bottle stopper.

The effects achieved by the components are as follows: the auxiliary groove can enable one side of the positioning plate to be an arc surface, so that friction force generated when the positioning plate is abutted against the bottle stopper is reduced, and the positioning plate can move more smoothly.

In summary, the beneficial effects of the utility model are as follows:

according to the utility model, different liquid medicines can be conveniently injected into the hose through the bifurcation pipe and the three-way pipe by arranging the adjusting structure, the semipermeable membrane can only pass through the liquid and can not pass through the air, so that the liquid medicine is prevented from flowing back, wherein the hard pipe can avoid bending the hose as much as possible when a patient infuses, the practicability of the infusion catheter is improved, the connecting rope can be wound on the hose after the hose is used, the hose is conveniently bent and stored, and finally, the sealing ring can improve the sealing property of the bifurcation pipe, so that the liquid medicine is prevented from flowing out.

According to the utility model, the auxiliary structure is arranged, before the needle is connected with the bottle stopper on the infusion bag, the positioning plate can be adjusted, so that the needle can be rapidly positioned and can be rapidly inserted into the bottle stopper, wherein after the screw rod is separated from the positioning column, the coil spring can drive the positioning plate to always rotate towards the bottle stopper, so that the positioning plate can be always abutted with the bottle stopper in the process of inserting the needle into the bottle stopper, the positioning plate is more convenient for a person to use, one side of the positioning plate can be an arc surface through the auxiliary groove, the friction force of the positioning plate when the positioning plate is abutted with the bottle stopper is reduced, the positioning plate can be moved more smoothly, and the needle can be rapidly positioned and can be rapidly inserted into the bottle stopper through adjusting the positioning plate by arranging the auxiliary structure.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is an enlarged view of the utility model at A of FIG. 1;

FIG. 3 is a schematic structural view of the adjusting structure of the present utility model;

FIG. 4 is an enlarged view of the utility model at B of FIG. 3;

FIG. 5 is a schematic view of a part of the adjusting structure of the present utility model;

FIG. 6 is a schematic view of an auxiliary structure of the present utility model;

fig. 7 is an enlarged view of fig. 6 at C in accordance with the present utility model.

Legend description: 1. an infusion bag; 2. a bottle stopper; 3. an adjustment structure; 31. a three-way pipe; 32. a hard tube; 33. a connecting rope; 34. a bifurcation tube; 35. a rubber stopper; 36. a seal ring; 37. a semipermeable membrane; 4. an auxiliary structure; 41. a linking ring; 42. positioning columns; 43. a positioning plate; 44. a screw; 46. a coil spring; 45. an auxiliary groove; 5. a needle; 6. and (3) a hose.

Detailed Description

Other advantages and advantages of the present utility model will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1, the present utility model provides a technical solution: the utility model provides an anti-reflux infusion catheter, includes infusion bag 1, and infusion bag 1's lower surface mounting has bottle plug 2, and bottle plug 2 keeps away from infusion bag 1's one end intercommunication has syringe needle 5, and syringe needle 5's one end fixed intercommunication has hose 6, and hose 6's circular arc face is equipped with adjusting structure 3, and hose 6's circular arc face is equipped with auxiliary structure 4.

The specific arrangement and function of the adjustment structure 3 and the auxiliary structure 4 will be described in detail below.

Referring to fig. 2, 3, 4 and 5, in this embodiment: the adjusting structure 3 comprises a semipermeable membrane 37, a three-way pipe 31 and two branch pipes 34, one end of the three-way pipe 31 is fixedly communicated with a hose 6, the cross section of the three-way pipe 31 is U-shaped, the two branch pipes 34 are fixedly communicated with the circular arc surface of the hose 6 respectively, the semipermeable membrane 37 is fixedly connected with the inner wall of a needle 5, the semipermeable membrane 37 can conveniently inject different liquid medicines into the hose 6 through the adjusting structure 3, the branch pipes 34 and the three-way pipe 31 can only pass through liquid and can not pass through air, so that liquid medicine backflow is avoided, the circular arc surface of the hose 6 is fixedly connected with three hard pipes 32, the hard pipes 32 are uniformly distributed on the circular arc surface of the hose 6, a patient can avoid bending the hose 6 as much as possible during transfusion, so that the practicability of the transfusion catheter is improved, the circular arc surface of the three hard pipes 32 is fixedly connected with a connecting rope 33, the connecting rope 33 is particularly an elastic rope, after the hose 6 is used up, the connecting rope 33 can be wound on the hose 6, so that the hose 6 is conveniently stored, one ends of the two branch pipes 34 are fixedly connected with three hard pipes 32, the hard pipes 36, the sealing rings 36 are respectively, and the sealing rings 36 are prevented from being adhered to each other, and the sealing ring 36 is prevented from flowing out.

Referring to fig. 6 and 7, in the present embodiment: the auxiliary structure 4 comprises a connecting ring 41, the connecting ring 41 is fixedly connected with a hose 6, three positioning columns 42 are fixedly connected with the inner wall of the connecting ring 41, the circular arc surfaces of the positioning columns 42 are rotationally connected with a positioning plate 43, one side of the positioning plate 43 is threaded through a screw rod 44, the screw rod 44 is abutted against the positioning columns 42, the positioning plate 43 can be adjusted by arranging the auxiliary structure 4 before the needle 5 is connected with the bottle stopper 2 on the infusion bag 1, so that the needle can be quickly positioned, the needle can be quickly inserted into the bottle stopper 2, the circular arc surfaces of the positioning columns 42 are sleeved with coil springs 45, two ends of the coil springs 45 are respectively fixedly connected with the positioning plate 43 and the connecting ring 41, after the screw rod 44 is separated from the positioning columns 42, the coil springs 45 can drive the positioning plate 43 to always rotate towards the bottle stopper 2, so that the positioning plate 43 can always be abutted against the bottle stopper 2 in the process of inserting the needle 5, a person can use the positioning plate 43 more conveniently, one side of the positioning plate 43 is provided with an auxiliary groove 46, the auxiliary groove 46 is abutted against the bottle stopper 2, one side of the positioning plate 43 can be enabled to be in a cambered surface shape, and the friction force of the positioning plate 43 can be smoothly moved against the bottle stopper 2 when the positioning plate 43 is enabled.

Working principle: according to the utility model, by arranging the adjusting structure 3, different liquid medicines can be conveniently injected into the hose 6 through the bifurcation tube 34 and the three-way tube 31, the semipermeable membrane 37 can only pass through liquid and can not pass through air, so that the liquid medicine backflow is avoided, wherein the hard tube 32 can avoid bending of the hose 6 as much as possible when a patient infuses, so that the practicability of the infusion catheter is improved, the connecting rope 33 can be wound on the hose 6 after the hose 6 is used, so that the hose 6 is conveniently bent and stored, and finally, the sealing ring 36 can improve the tightness of the bifurcation tube 34, so that the liquid medicine is prevented from flowing out.

In the utility model, by arranging the auxiliary structure 4, before the needle 5 is connected with the bottle stopper 2 on the infusion bag 1, the positioning plate 43 can be adjusted, so that the needle can be rapidly positioned and can be rapidly inserted into the bottle stopper 2, wherein after the screw 44 is separated from the positioning column 42, the coil spring 45 drives the positioning plate 43 to always rotate towards the bottle stopper 2, so that the positioning plate 43 can be always abutted with the bottle stopper 2 in the process of inserting the needle 5 into the bottle stopper 2, the positioning plate 43 is more convenient for a person to use, one side of the positioning plate 43 can be provided with an arc surface by the auxiliary groove 46, the friction force when the positioning plate 43 is abutted with the bottle stopper 2 is reduced, the positioning plate 43 can be moved more smoothly, and the needle can be rapidly positioned and can be rapidly inserted into the bottle stopper 2 by adjusting the positioning plate 43 by arranging the auxiliary structure 4.

Claims

1. An anti-reflux infusion catheter, comprising an infusion bag (1), characterized in that: the infusion bag is characterized in that a bottle stopper (2) is mounted on the lower surface of the infusion bag (1), one end of the bottle stopper (2) far away from the infusion bag (1) is communicated with a needle head (5), one end of the needle head (5) is fixedly communicated with a hose (6), the circular arc surface of the hose (6) is provided with an adjusting structure (3), the adjusting structure (3) comprises a semipermeable membrane (37), a three-way pipe (31) and two bifurcation pipes (34), one end of the three-way pipe (31) is fixedly communicated with the hose (6), the cross section of the three-way pipe (31) is U-shaped, the two bifurcation pipes (34) are fixedly communicated with the circular arc surface of the hose (6) respectively, and the semipermeable membrane (37) is fixedly connected with the inner wall of the needle head (5).

2. The anti-reflux infusion catheter of claim 1, wherein: the circular arc surface of hose (6) fixedly connected with three hard tube (32), hard tube (32) evenly distributed is on the circular arc surface of hose (6).

3. A reflux-preventing infusion catheter according to claim 2, wherein: the arc surfaces of the three hard pipes (32) are fixedly connected with connecting ropes (33), and the connecting ropes (33) are elastic ropes.

4. The anti-reflux infusion catheter of claim 1, wherein: one end of each bifurcation tube (34) is fixedly connected with a sealing ring (36), and the sealing rings (36) are attached to the rubber plugs (35).

5. The anti-reflux infusion catheter of claim 1, wherein: the circular arc face of hose (6) is equipped with auxiliary structure (4), auxiliary structure (4) are including linking ring (41), linking ring (41) and hose (6) fixed connection, the inner wall fixedly connected with three reference column (42) of linking ring (41), the circular arc face of reference column (42) rotates and is connected with locating plate (43), screw rod (44) are worn to be equipped with by one side screw thread of locating plate (43), screw rod (44) and reference column (42) looks butt.

6. The anti-reflux infusion catheter of claim 5, wherein: the circular arc surface of the positioning column (42) is sleeved with a coil spring (45), and two ends of the coil spring (45) are fixedly connected with the positioning plate (43) and the connecting ring (41) respectively.

7. The anti-reflux infusion catheter of claim 5, wherein: an auxiliary groove (46) is formed in one side of the positioning plate (43), and the auxiliary groove (46) is abutted to the bottle stopper (2).