CN220344928U

CN220344928U - Three-cavity PICC catheter

Info

Publication number: CN220344928U
Application number: CN202321904610.5U
Authority: CN
Inventors: 王珉
Original assignee: Qingdao Municipal Hospital
Current assignee: Qingdao Municipal Hospital
Priority date: 2023-07-19
Filing date: 2023-07-19
Publication date: 2024-01-16
Anticipated expiration: 2033-07-19

Abstract

The utility model provides a three-cavity PICC catheter, which belongs to the technical field of medical equipment, and comprises a catheter and a three-way assembly; the catheter is internally provided with a main cavity, a side cavity and a third cavity which are mutually independent, and the sections of the main cavity, the side cavity and the third cavity are all fan-shaped; the tip of the catheter is an opening, and the tail end of the catheter is fixedly connected to the tee joint assembly; the three-way component comprises a positioning joint, a connecting pipe and a medicine feeding joint, one end of the positioning joint is communicated with the catheter, the other end of the positioning joint is connected with three connecting pipes in parallel, the other ends of the connecting pipes are respectively connected with the medicine feeding joint, the connecting pipes comprise a first connecting pipe, a second connecting pipe and a third connecting pipe, the first connecting pipe is communicated with the main cavity, the second connecting pipe is communicated with the side cavity, and the third connecting pipe is communicated with the third cavity; the PICC catheter can solve the problem that the traditional PICC catheter cannot achieve multifunction and applicability, and improves the application range and clinical use rate.

Description

Three-cavity PICC catheter

Technical Field

The utility model belongs to the technical field of medical equipment, and particularly relates to a three-cavity PICC catheter.

Background

PICC (Peripherally Inserted Central Catheter) catheter is a long-term vascular access device that is used for infusion in the peripheral veins of the patient's upper limb and then through the venous system into a large central vein, such as the subclavian vein or the internal jugular vein, in the vicinity of the heart. It plays a role of bridging the peripheral blood vessel and the central vein, provides a reliable and convenient passage, and is used for transfusion, antibiotic treatment, nutrition support and the like. PICC catheters are typically made of soft and durable materials such as hard polyurethane or nylon. The diameter of the catheter is typically expressed in french dimensions (F), common dimensions including 3F to 6F, and diameters of about 1 mm to 2 mm. The length of the catheter may vary depending on the patient's height, weight and path of the passageway desired, typically from about 40 cm to about 70 cm.

Conventional PICC catheters typically contain only a single catheter lumen, limiting their flexibility and functional expansion in clinical applications. Where it is desired to perform different functions, such as blood, drug and drainage, within the same catheter, a PICC catheter of multi-lumen design is created. However, in order to ensure infusion efficiency, the PICC catheter with multiple chambers often needs a larger diameter, which results in a smaller application range and low clinical usage, and thus has a problem that it cannot achieve both multifunction and applicability.

Disclosure of Invention

In view of this, the utility model provides a three-cavity PICC catheter, which can solve the problem that the traditional PICC catheter cannot be compatible with multiple functions and applicability, and improves the application range and clinical utilization rate.

The utility model is realized in the following way:

the utility model provides a three-cavity PICC catheter, which comprises a catheter and a three-way assembly; the catheter is internally provided with a main cavity, a side cavity and a third cavity which are mutually independent along the circumferential direction at equal intervals, and the sections of the main cavity, the side cavity and the third cavity are all fan-shaped; the tip of the catheter is an opening, and the tail end of the catheter is fixedly connected to the tee joint assembly; the tee joint assembly comprises a positioning joint, a connecting pipe and a medicine feeding joint, one end of the positioning joint is communicated with the guide pipe, the other end of the positioning joint is connected with three connecting pipes in parallel, and the other ends of the connecting pipes are respectively connected with the medicine feeding joint.

The technical effects of the three-cavity PICC catheter provided by the utility model are as follows: through setting up PICC pipe with three cavity, can be used for blood flow, medicine infusion and drainage respectively, can realize multiple functions simultaneously, improved the multifunctionality of pipe; by arranging the chambers in a fan shape, compared with the traditional circular shape, the volume of each chamber is increased as much as possible, and the infusion rate is also favorably met under the condition that the outer diameter of the catheter is as small as possible; the partition plates between the adjacent chambers can also be used as support plates for the catheters, so that the stability and pressure resistance of the catheters are improved, and thrombus or tube blockage caused when the PICC catheters are left in the patient for a long time is avoided; through the tee bend subassembly of setting up, each cavity in connecting pipe wherein and the pipe communicates respectively, has realized independence between each cavity for each cavity is not interfered with each other when carrying out respective function.

Based on the technical scheme, the three-cavity PICC catheter can be further improved as follows:

the connecting pipes comprise a first connecting pipe, a second connecting pipe and a third connecting pipe, the first connecting pipe is communicated with the main cavity, the second connecting pipe is communicated with the side cavity, and the third connecting pipe is communicated with the third cavity.

Further, the cross-sectional area of the main cavity is larger than the cross-sectional areas of the side cavity and the third cavity.

Furthermore, the inner corners of the main cavity, the side cavity and the third cavity are all arc-shaped.

Further, a metal guide wire is embedded in the axis of the catheter; one end of the metal guide wire, which is close to the tee joint assembly, is fixedly connected with the positioning joint; the other end of the metal guide wire penetrates out of the tip end of the catheter and extends to the outside of the catheter to form a tip.

The beneficial effects of adopting above-mentioned improvement scheme are: the metal guide wire is directly arranged in the catheter and used for guiding the catheter to enter the blood vessel, so that the accuracy of the intubation is improved, and the risks of sliding and ectopic guide wire in the catheterization process can be reduced;

further, the shape of the end head is J-shaped with smooth surface.

The beneficial effects of adopting above-mentioned improvement scheme are: the end part of the metal guide wire is the J-shaped soft head, so that the compliance of the front end of the catheter is increased, a boosting effect is formed, the pushing of the catheter is facilitated, and meanwhile, the vascular scoring can be avoided.

Further, a first connecting cap with internal threads is arranged at one end of the positioning joint connected with the catheter, and two symmetrical first screwing pieces are arranged on the outer side wall of the first connecting cap.

Furthermore, a second connecting cap with internal threads is arranged at one end of the medicine feeding connector connected with the connecting pipe, so that two symmetrical second screwing pieces are arranged on the outer side wall of the second connecting cap.

The beneficial effects of adopting above-mentioned improvement scheme are: through the arrangement, the connecting effect between the positioning joint and the catheter, and between the connecting pipe and the medicine feeding joint is stable and reliable.

Further, the inner diameters of the first connecting pipe, the second connecting pipe and the third connecting pipe are all 2-3 mm.

Further, the outer diameter of the catheter is 1.6-1.7 mm.

The beneficial effects of adopting above-mentioned improvement scheme are: because the external diameter of pipe directly relates to its male blood vessel size and the invasive degree of puncture, traditional three-chamber PICC pipe's external diameter is thicker, and application scope is little and the rate of utilization is low, through above-mentioned setting for this three-chamber PICC pipe is more suitable for the thinner patient of blood vessel, can also ensure patient's comfort level and security when guaranteeing the functionality.

Compared with the prior art, the three-cavity PICC catheter provided by the utility model has the beneficial effects that: through setting up PICC pipe with three cavity, can be used for blood flow, medicine infusion and drainage simultaneously, can realize multiple functions simultaneously, improved the multifunctionality of pipe; the metal guide wire is directly arranged in the catheter and used for guiding the catheter to enter the blood vessel, so that the accuracy of the intubation is improved, and the risks of sliding and ectopic guide wire in the catheterization process can be reduced; through the tee joint assembly, the connecting pipes are respectively communicated with the chambers in the guide pipe, so that the independence among the chambers is realized, and each chamber is not interfered with each other when executing the respective functions; by providing a sector shaped chamber, the volume of each chamber is increased as much as possible compared to a conventional circular shape, which is also advantageous for meeting the infusion rate in case the catheter outer diameter is as small as possible.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments of the present utility model will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of a three-lumen PICC catheter;

FIG. 2 is a schematic illustration of a catheter section in a three-lumen PICC catheter;

FIG. 3 is a schematic view of a positioning adapter in a three-lumen PICC catheter;

FIG. 4 is a schematic illustration of a drug delivery connector in a three-lumen PICC catheter;

in the drawings, the list of components represented by the various numbers is as follows:

1. a conduit; 11. a main chamber; 12. a side cavity; 13. a third chamber; 14. a metal guide wire; 141. an end head; 2. a tee assembly; 21. positioning the joint; 211. a first connection cap; 212. a first screw piece; 22. a connecting pipe; 221. a first connection pipe; 222. a second connection pipe; 223. a third connection pipe; 23. a drug inlet connector; 231. a second connection cap; 232. and the second screwing piece.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

1-4, a three-cavity PICC catheter provided by the utility model comprises a catheter 1 and a three-way component 2; wherein, the catheter 1 is internally provided with a main cavity 11, a side cavity 12 and a third cavity 13 which are mutually independent along the circumferential direction at equal intervals, and the sections of the main cavity 11, the side cavity 12 and the third cavity 13 are all fan-shaped; the tip of the catheter 1 is an opening, and the tail end of the catheter is fixedly connected to the tee joint assembly 2; the tee joint assembly 2 comprises a positioning joint 21, a connecting pipe 22 and a medicine feeding joint 23, one end of the positioning joint 21 is communicated with the catheter 1, the other end of the positioning joint 21 is connected with three connecting pipes 22 in parallel, and the other ends of the connecting pipes 22 are respectively connected with the medicine feeding joint 23.

When in use, the catheter 1 is internally provided with three chambers, namely a main chamber 11, a side chamber 12 and a third chamber 13, wherein the main chamber 11 is communicated with the first connecting pipe 221 to form a main chamber of the three-chamber PICC catheter, and the main chamber has larger volume and can obtain larger flow velocity for detecting CVP or rapid fluid infusion; the side cavity 12 is communicated with the second connecting pipe 222 to form a side cavity of the three-cavity PICC catheter, and the volume of the side cavity is smaller than that of the main cavity, so that the flow rate is also smaller than that of the main cavity, and the side cavity is preferably used for pumping medicines, such as vasoactive medicines and the like; the third lumen 13 communicates with the third connection tube 223 to form a third chamber of the three-lumen PICC catheter, which has the same volume and flow rate as the side chamber, for fluid infusion, intravenous administration and replacement of the side chamber.

In the above-mentioned embodiments, the connection tube 22 includes a first connection tube 221, a second connection tube 222, and a third connection tube 223, the first connection tube 221 is in communication with the main chamber 11, the second connection tube 222 is in communication with the side chamber 12, and the third connection tube 223 is in communication with the third chamber 13.

Further, in the above-described embodiments, the cross-sectional area of the main chamber 11 is larger than the cross-sectional areas of the side chambers 12 and the third chamber 13.

Further, in the above technical solution, the inner corners of the main cavity 11, the side cavity 12 and the third cavity 13 are all circular arc-shaped.

Furthermore, in the above technical solution, a metal guide wire 14 is embedded in the axial center of the catheter 1; one end of the metal guide wire 14, which is close to the tee joint assembly 2, is fixedly connected with the positioning joint 21; the other end of the wire 14 extends out of the tip of the catheter 1 to the outside of the catheter 1 to form a tip 141.

Further, in the above technical solution, the shape of the end 141 is a J-shape with a smooth surface.

When in use, the end head 141 is arranged in the catheter 1, has the functions of supporting and guiding the catheter 1 to advance, and the J-shaped soft head with smooth surface can effectively reduce the damage to the inner wall of the blood vessel, is not easy to cause complications such as thrombus, tissue hemorrhage and the like, and reduces the pain of patients; meanwhile, the anti-friction and hydrophilic performance is good, the anti-falling performance is not easy to fall off, and the operation difficulty of medical staff is reduced.

Further, in the above technical solution, the end of the positioning connector 21 connected with the catheter 1 is provided with a first connection cap 211 with internal threads, and two symmetrical first screwing pieces 212 are provided on the outer sidewall of the first connection cap 211.

Further, in the above-mentioned technical solution, the end of the drug feeding connector 23 connected with the connecting tube 22 is provided with the second connecting cap 231 with internal threads, so two symmetrical second screwing pieces 232 are provided on the outer sidewall of the second connecting cap 231.

Further, in the above-described embodiments, the inner diameters of the first connection pipe 221, the second connection pipe 222, and the third connection pipe 223 are all 2 to 3mm.

Further, in the above-described embodiments, the outer diameter of the catheter 1 is 1.6 to 1.7mm.

Specifically, the principle of the utility model is as follows: the catheter 1 is internally provided with three chambers, namely a main chamber 11, a side chamber 12 and a third chamber 13, wherein the main chamber 11 is communicated with a first connecting pipe 221 to form a main chamber of a three-chamber PICC catheter, and the main chamber is large in volume and can acquire a larger flow rate for detecting CVP or rapid fluid infusion; the side cavity 12 is communicated with the second connecting pipe 222 to form a side cavity of the three-cavity PICC catheter, and the volume of the side cavity is smaller than that of the main cavity, so that the flow rate is also smaller than that of the main cavity, and the side cavity is preferably used for pumping medicines, such as vasoactive medicines and the like; the third lumen 13 communicates with the third connection tube 223 to form a third chamber of the three-lumen PICC catheter, which has the same volume and flow rate as the side chamber, for fluid infusion, intravenous administration and replacement of the side chamber.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims

1. A three-cavity PICC catheter, which comprises a catheter (1) and a tee joint assembly (2); the catheter is characterized in that a main cavity (11), a side cavity (12) and a third cavity (13) which are mutually independent are arranged in the catheter (1) at equal intervals along the circumferential direction, and the sections of the main cavity (11), the side cavity (12) and the third cavity (13) are fan-shaped; the tip of the catheter (1) is an opening, and the tail end of the catheter is fixedly connected to the tee joint assembly (2); the tee joint assembly (2) comprises a positioning joint (21), a connecting pipe (22) and a medicine feeding joint (23), one end of the positioning joint (21) is communicated with the guide pipe (1), the other end of the positioning joint (21) is connected with three connecting pipes (22) in parallel, and the other ends of the connecting pipes (22) are respectively connected with the medicine feeding joint (23).

2. The three-lumen PICC catheter according to claim 1, wherein the connection tube (22) comprises a first connection tube (221), a second connection tube (222), a third connection tube (223), the first connection tube (221) being in communication with the main lumen (11), the second connection tube (222) being in communication with the side lumen (12), the third connection tube (223) being in communication with the third lumen (13).

3. A three-lumen PICC catheter according to claim 2, wherein the main lumen (11) has a larger cross-sectional area than the side lumen (12), the third lumen (13).

4. A three-lumen PICC catheter according to claim 3, wherein the main lumen (11), the side lumen (12) and the third lumen (13) have rounded inner corners.

5. The three-cavity PICC catheter as defined in claim 4, wherein a metal guide wire (14) is embedded at the axis of the catheter (1); one end of the metal guide wire (14) close to the tee joint assembly (2) is fixedly connected with the positioning joint (21); the other end of the metal guide wire (14) penetrates out of the tip of the catheter (1) and extends to the outside of the catheter (1) to form a tip (141).

6. The three-lumen PICC catheter according to claim 5, wherein the tip (141) is shaped as a smooth-surfaced J.

7. The three-chamber PICC catheter according to claim 6, wherein the end of the positioning connector (21) connected with the catheter (1) is provided with a first connecting cap (211) with internal threads, and the outer side wall of the first connecting cap (211) is provided with two symmetrical first screwing pieces (212).

8. The three-chamber PICC catheter according to claim 7, wherein the end of the drug feeding connector (23) connected with the connecting tube (22) is provided with a second connecting cap (231) with internal threads, so that the outer side wall of the second connecting cap (231) is provided with two symmetrical second screwing pieces (232).

9. The three-lumen PICC catheter according to claim 8, wherein the inner diameters of the first connecting tube (221), the second connecting tube (222) and the third connecting tube (223) are all 2-3 mm.

10. A three-lumen PICC catheter according to claim 9, characterized in that the catheter (1) has an outer diameter of 1.6-1.7 mm.