CN110051915B

CN110051915B - Disposable deep vein infusion tube core with cap and heparin coating

Info

Publication number: CN110051915B
Application number: CN201910373706.5A
Authority: CN
Inventors: 聂凌; 赵景宏
Original assignee: Second Affiliated Hospital Army Medical University
Current assignee: Second Affiliated Hospital Army Medical University
Priority date: 2019-05-07
Filing date: 2019-05-07
Publication date: 2022-02-11
Anticipated expiration: 2039-05-07
Also published as: CN110051915A

Abstract

The invention belongs to the technical field of medical appliances, and discloses a disposable tube core with a cap of a deep vein infusion tube with a heparin coating, which is provided with a heparin cap; the tube core is integrally formed at the opening at the lower end of the heparin cap, the tail end of the tube core penetrates into a deep venous transfusion tube, the head end of the tube core is of a softer round blunt structure, the tail section of the tube core is a slightly tough material body, the length of the tube core is slightly longer than that of the deep venous transfusion tube, the head end of the tube core is exposed out of the tip end of the transfusion tube by about 0.5cm, after each transfusion, a CVC outer opening is repeatedly sterilized by iodophors, the tube core is placed into the tube core from the outer opening by a sterile glove, the tube core is conveyed to the bottom, the screw cap at the tail end of the tube core is rotated to tightly seal the outer opening of the transfusion tube, when the heparin cap is used next time, the screw cap is rotated to pull out the tube, and the empty needle can be connected with the transfusion tube after fresh blood is pumped back. The invention can effectively avoid the blockage of the CVC caused by the thrombosis near the inner opening of the catheter due to long-term catheter placement, and the smoothness of the CVC is very important for the survival of patients.

Description

Disposable deep vein infusion tube core with cap and heparin coating

Technical Field

The invention belongs to the technical field of medical appliances, and particularly relates to a disposable tube core with a cap for a deep vein infusion tube with a heparin coating.

Background

Currently, the current state of the art commonly used in the industry is such that:

the deep intravenous infusion tube (CVC) is a commonly used clinical infusion device, particularly for patients with tumor chemotherapy or surgical patients needing long-term parenteral nutrition, the smoothness of the CVC is critical to the survival of the patients, but because thrombus formation near the inner opening of a catheter caused by long-term tube placement is a main reason for blockage of the CVC, the blockage of the CVC cannot be reduced remarkably by the thick heparin/citric acid tube sealing.

In summary, the problems of the prior art are as follows:

(1) CVC occlusion results from thrombosis near the catheter's internal orifice due to chronic catheterization.

The difficulty of solving the technical problems is as follows:

1. the inner diameter of the tube core must be matched with the inner diameter of the CVC tube, and the tube core cannot be too thin, so that blood backflow causes thrombosis, and cannot be too thick, so that smooth implantation cannot be realized, and a heparin coating cannot be damaged in the implantation process;

2. the tube core has certain hardness and flexibility, so that the insertion process is smooth, the CVC tube is not damaged, and the tube core is not easy to break to fall into a blood vessel;

3. the head end of the tube core must be round and soft enough to avoid damaging the inner wall of the blood vessel after insertion;

4. a movable mechanism is required to be designed at the joint of the cap head and the tube core, so that the rotation of the cap head does not cause the tube core to rotate, but the connection between the cap head and the tube core is not influenced, and the tube core is not dropped when the cap head is pulled

The significance of solving the technical problems is as follows:

the smoothness of CVC catheterization is a necessary condition for ensuring tumor chemotherapy and parenteral nutrition therapy. The patient can effectively prevent the thrombosis in the CVC tube and at the tube mouth by using the disposable tube core with the cap and the heparin coating, effectively maintain the smoothness of the CVC tube and ensure the deep venous transfusion treatment.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a disposable tube core with a cap for a deep intravenous infusion tube with a heparin coating.

The invention is realized in such a way that a disposable deep vein infusion tube core with a heparin coating is provided with:

a heparin cap;

a tube core is integrally formed at the opening at the lower end of the heparin cap, and the tail end of the tube core penetrates into the deep vein infusion tube.

The joint of the cap head and the tube core is provided with a movable mechanism which can prevent the tube core from rotating along with the cap head, but the tube core is taken out along with the cap head when the cap head is lifted.

Furthermore, the head end of the tube core is of a relatively soft round and blunt structure, and the tail section is of a slightly tough material body.

Furthermore, the tube core length is slightly longer than the deep venous transfusion tube length, and the tube core head end is exposed about 0.5cm from the transfusion tube tip.

The invention also aims to provide a using method of the disposable heparin-coated deep intravenous infusion tube capped tube core, which comprises the following steps:

(1) after the transfusion is finished, repeatedly disinfecting the CVC outer opening by iodophor;

(2) placing the tube core from the outer opening with a sterile glove;

(3) after the tube core is sent to the bottom, the screw cap at the tail end of the tube core is rotated to tightly seal the outer opening of the infusion tube;

(4) when used next time, the screw cap is rotated to be pulled out, and the empty needle can be connected with the transfusion tube for transfusion after fresh blood is pumped back.

In summary, the advantages and positive effects of the invention are: the invention can effectively avoid the blockage of CVC caused by the thrombosis near the inner opening of the catheter due to long-term catheterization. The incidence rate of the existing common heparin cap sealing tube blocking is about 10 percent, the average smooth time is about 20 days, the invention reduces the incidence rate of the tube blocking to 1 to 2 percent, and the average smooth time is more than 40 days.

Drawings

FIG. 1 is a schematic structural diagram of a capped tube core of a disposable heparin-coated deep intravenous infusion tube according to an embodiment of the present invention;

in the figure: 1. a heparin cap; 2. a die; 3. a deep venous infusion tube; 4. a die tip.

Fig. 2 is a flow chart of a method for using a disposable tube core of a deep intravenous infusion tube with a cap and a heparin coating according to an embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The following detailed description of the principles of the invention is provided in connection with the accompanying drawings.

As shown in fig. 1, the disposable heparin-coated deep intravenous infusion tube capped tube core provided by the embodiment of the invention comprises: heparin cap 1, wick 2.

A tube core 2 is integrally formed at the opening at the lower end of the heparin cap 1, and the tail end of the tube core 2 penetrates into the deep vein infusion tube 3.

Preferably, the tip end 4 of the tube core is of a relatively soft and blunt configuration and the tail end is of a somewhat tough material.

Preferably, the length of the tube core 2 is slightly longer than that of the deep intravenous infusion tube 3, and the head end of the tube core 2 is exposed about 0.5cm from the tip end of the deep intravenous infusion tube 3.

As shown in fig. 2, the application method of the disposable heparin-coated deep intravenous infusion tube capped tube core provided by the embodiment of the invention specifically comprises the following steps:

s101: after the transfusion is finished, repeatedly disinfecting the CVC outer opening by iodophor;

s102: placing the tube core from the outer opening with a sterile glove;

s103: after the tube core is sent to the bottom, the screw cap at the tail end of the tube core is rotated to tightly seal the outer opening of the infusion tube;

s104: when used next time, the screw cap is rotated to be pulled out, and the empty needle can be connected with the transfusion tube for transfusion after fresh blood is pumped back.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a deep vein transfer line of disposable area heparin coating takes cap pipe core which characterized in that, the deep vein transfer line of disposable area heparin coating takes cap pipe core to be provided with:

a heparin cap;

a tube core is integrally formed at an opening at the lower end of the heparin cap, and the tail end of the tube core penetrates into the deep venous transfusion tube;

the head end of the tube core is a relatively soft round and blunt structure, and the tail section is a slightly tough material body;

the length of the tube core is slightly longer than that of the deep venous transfusion tube, and the head end of the tube core is exposed by about 0.5cm from the tip of the transfusion tube;

the use method of the disposable deep intravenous infusion tube core with the cap and the heparin coating comprises the following steps:

(1) after the transfusion is finished, the outer opening of the deep vein transfusion tube is repeatedly disinfected by iodophor;

(2) placing the tube core from the outer opening with a sterile glove;

(3) after the tube core is sent to the bottom, a heparin cap at the tail end of the tube core is rotated to tightly seal the outer opening of the deep venous transfusion tube;

(4) when the disposable infusion set is used next time, the heparin cap is pulled out by rotating the heparin cap, and the infusion tube can be connected for transfusion after fresh blood is pumped back by the empty needle.