CN203989399U - Poriferous circular venous duct and puncture bag - Google Patents

Abstract

The utility model provides a porous central venous catheter, which is inserted into a patient's central vein for infusion, and is characterized in that it comprises: an infusion tube with an infusion end placed in the patient's central vein; tube; and a positioning component connected between the extension tube and the infusion tube to fix the extension tube on the patient's skin, and the infusion tube is provided with a plurality of infusion holes in a predetermined arrangement on the side wall of the infusion end. The utility model also provides a puncture pack, comprising: a puncture needle for forming a puncture hole; a guide wire inserted into the puncture needle and blood vessel; an expansion tube for expanding the puncture hole; and a porous central venous catheter inserted into the puncture hole. The porous central venous catheter of the utility model can not only speed up the transfusion speed but also reduce the probability of blockage.

Description

Multi-hole central venous catheter and puncture kit

technical field

The utility model relates to a porous central venous catheter and a puncture bag, belonging to the field of medical instruments.

Background technique

A central venous catheter is a type of endovascular tube that is placed in a large vein by puncture. The current central venous catheter generally has a single hole at the top for drug administration and infusion. This will cause high lumen pressure and slow infusion speed during the infusion process, and if the single hole is blocked, the entire central venous catheter will lose its function.

Utility model content

The utility model is made in order to solve the above-mentioned problems, and the purpose is to provide a porous central venous catheter and a puncture bag which can accelerate the infusion speed and reduce the probability of blockage.

In order to achieve the above object, the utility model adopts the following structure.

<Structure 1>

The utility model provides a porous central venous catheter, which is inserted into a patient's central vein for infusion, and is characterized in that it comprises: an infusion tube with an infusion end placed in the patient's central vein; tube; and a positioning assembly connected between the extension tube and the infusion tube to fix the extension tube on the patient's skin, wherein the infusion tube is provided with a plurality of infusion holes in a predetermined arrangement on the side wall of the infusion end.

In addition, the porous central venous catheter of the present invention may also have such a feature: wherein, the length of the infusion tube ranges from 15 cm to 20 cm, and the diameter of each infusion hole ranges from 0.5 mm to 4 mm.

In addition, the porous central venous catheter of the present invention may also have such a feature: wherein, the predetermined arrangement is that a plurality of infusion holes are arranged in a spiral shape on the side wall of the infusion tube.

In addition, the porous central venous catheter of the present invention may also have such a feature: wherein, the predetermined arrangement is that a plurality of infusion holes are arranged in a straight line on the side wall of the infusion tube.

In addition, the porous central venous catheter of the present invention may also have such a feature: wherein, the number of infusion holes is less than 20.

In addition, the porous central venous catheter of the present invention may also have such a feature: wherein, the end of the extension tube is provided with a heparin cap for sealing the lumen.

In addition, the porous central venous catheter of the present invention may also have the feature that positioning holes are respectively provided on both sides of the positioning component.

In addition, the porous central venous catheter of the present invention may also have such a feature: wherein, the extension tube is covered with an infusion valve for clamping the lumen.

<Structure 2>

Furthermore, the utility model also provides a puncture bag, which is characterized in that it includes:

A puncture needle for forming a puncture hole; a dilation tube for dilating the puncture hole; a guide wire for inserting the puncture hole along the puncture needle; and a multi-hole central venous catheter inserted into the puncture hole, wherein the multi-hole central venous catheter is <structure 1> Porous central venous catheter in,

Functions and Effects of Utility Models

According to the porous central venous catheter of the present invention, because the infusion tube is provided with a plurality of infusion holes in a predetermined arrangement on the side wall of the infusion end, during infusion, the lumen pressure is low and the infusion speed is faster than that of a single hole; and if a certain If one tube hole is blocked, the other tube holes can still be used, which does not affect the infusion and reduces the chance of blockage.

In addition, the increase in the infusion hole reduces the contact area between the central venous catheter and the blood vessel, reduces the area of foreign matter in the blood vessel, and reduces the risk of thrombosis.

Description of drawings

Fig. 1 is the structural representation of the multi-puncture bag involved in the utility model in embodiment 1;

Fig. 2 is a structural schematic diagram of the porous central venous catheter involved in the utility model in Embodiment 1;

Fig. 3 is a structural schematic diagram of the porous central venous catheter of the present invention in Modification 1; and

Fig. 4 is a schematic structural view of a central venous catheter in the background technology.

Detailed ways

The porous central venous catheter and the puncture bag involved in the present invention will be described in detail below with reference to the accompanying drawings.

<Example 1>

Fig. 1 is a schematic structural view of the puncture pack in Embodiment 1 of the present invention.

As shown in FIG. 1 , the puncture kit 100 includes a puncture needle 101 , a multi-hole central venous catheter 50 , a dilation tube 102 , a guide wire 103 , and a syringe 104 .

The porous central venous catheter 50 is covered with a disposable plastic sleeve, which is used to protect the porous central venous catheter 50 from damage, and must be removed before the porous central venous catheter 50 is inserted into the body. The multi-hole central venous catheter 50 includes an infusion tube 51 , a positioning component 52 , and an extension tube 53 . The positioning assembly 52 is divided into two parts: an inner liner 521 and an outer shell 522 . The inner liner 521 is arranged on the porous central venous catheter 50 and connected between the infusion tube 51 and the extension tube 53 . Housing 522 is placed in the puncture pack. When the porous central venous catheter 50 is used, the shell 522 and the inner liner 521 need to be assembled together. The end of the extension tube 53 is provided with a heparin cap 5 .

The puncture needle 101 is composed of a needle tube and a needle head, and is used to form a puncture hole. The expansion tube 102 can expand the puncture hole, the guide wire 103 can be inserted into the puncture hole along the puncture needle 101 , and the multi-hole central venous catheter 50 is inserted into the puncture hole under the guidance of the guide wire 103 for infusion. The guide wire 103 is J-shaped and fixed with a plastic tube. The syringe 104 is used to inject anesthesia before the puncture operation.

Fig. 2 is a schematic structural view of the porous central venous catheter in Embodiment 1 of the present invention.

Fig. 4 is a schematic structural view of a central venous catheter in the background technology.

As shown in FIG. 2 , the porous central venous catheter 50 has an infusion tube 51 , a positioning component 52 , and an extension tube 53 .

The top end of the infusion tube 51 is the infusion end 1 . The top of the infusion end 1 has a single hole, and the side wall has five infusion holes 2 arranged in a spiral shape, while in the existing multi-hole central venous catheter 56 of the infusion tube, the infusion end 22 only has a single hole at the top, as shown in the figure 4. However, the number of infusion holes should not be too many, generally less than 20, because too many holes will reduce the continuity of the porous central venous catheter 50 and easily break.

The length of the infusion tube 51 is 20 cm, and the diameter of the infusion hole 2 is 1.7 mm. Positioning holes 3 are respectively provided on both sides of the positioning component 52 , and the extension tube 53 can be sutured on the patient's skin through the positioning holes 3 . The infusion valve 4 is sleeved on the extension tube 53, and when the infusion valve 4 is clamped, the infusion process of the infusion tube 51 can be blocked. The end of the extension tube 53 is provided with a heparin cap 5 for sealing the tube.

The use of the puncture kit and the process of implanting the porous central venous catheter 50 in the body are as follows: determine the puncture point, and disinfect the surgical area, such as the skin at the femoral vein, subclavian vein, and internal jugular vein. A local anesthetic, such as 10% lidocaine, is injected subcutaneously using the syringe 104 . Then the needle is inserted under negative pressure for puncture. After the puncture needle 101 sucks the venous blood, feed the guide wire 103 to about 20 cm along the tail hole of the puncture needle 101, then withdraw from the puncture needle 101, and keep the guide wire 103. Next, send the expansion tube 102 along the tail end of the guide wire 103 to expand the skin at the puncture site. Then exit the expansion tube 102, unscrew the heparin cap 5 at the tail end of the porous central venous catheter 50 to open the lumen, and feed the porous central venous catheter 50 along the tail end of the guide wire 103 until it remains on the body surface for positioning on the skin At hole 3, the length of the porous central venous catheter 50 entering the body is 15cm-20cm. After the guide wire 103 is exposed from the tail end of the porous central venous catheter 50 , the guide wire 103 can be pulled out. Use a suture to pass through the positioning hole 3 and suture the extension tube 53 on the skin surface. Sterilize again and cover the puncture point with a large patch. The end of the epitaxial tube 53 is connected with the medicinal liquid, and the medicinal liquid can be input into the body.

Function and effect of embodiment

According to the porous central venous catheter involved in this embodiment, because the infusion tube is provided with five infusion holes distributed in a spiral shape on the side wall of the infusion end, during infusion, the lumen pressure is low and the infusion speed is faster than that of a single hole; Moreover, if a certain tube hole is blocked, other tube holes can still be used, which does not affect the transfusion and reduces the probability of blockage.

In addition, the increase in the infusion hole reduces the contact area between the porous central venous catheter and the blood vessel, reduces the area of foreign matter in the blood vessel, and reduces the risk of thrombosis.

<Modification 1>

In Modification 1, the same reference numerals are assigned to the same configurations as in Embodiment 1, and the same descriptions are omitted.

Fig. 3 is a schematic structural view of the modified example 1 of the porous central venous catheter of the present invention.

As shown in FIG. 3 , the multi-hole central venous catheter 54 has an infusion tube 55 , a positioning component 52 , and an extension tube 53 .

The top of the infusion tube 55 is the infusion end 11, and the top of the infusion end 1 has a single hole, and the side wall has five infusion holes 21 arranged in a straight line.

Function and effect of embodiment

According to the porous central venous catheter involved in this modified example, because the infusion tube is provided with five infusion holes distributed in a straight line on the side wall of the infusion end, during infusion, the lumen pressure is low and the infusion speed is faster than that of a single hole; and If a certain tube hole is blocked, other tube holes can still be used, which does not affect the infusion and reduces the probability of blockage.

In addition, the increase in the infusion hole reduces the contact area between the porous central venous catheter and the blood vessel, reduces the area of foreign matter in the blood vessel, and reduces the risk of thrombosis.

Certainly, the porous central venous catheter and the puncture bag involved in the present invention are not limited to the structure in this embodiment. The number of infusion holes can also be any value between 2 and 20. The length range of the infusion tube can also be any value between 15cm and 20cm. The range of the diameter of each infusion hole can also be any value between 0.5mm and 4mm.

Claims (9)

1. a poriferous circular venous duct, inserts in patient's central vein and infuses, and it is characterized in that, comprising:

Tube for transfusion, has the transfusion end being placed in described patient's central vein;

Be connected to and on described tube for transfusion, be exposed to the extension outside described patient body; And

Be connected to described extension and described tube for transfusion between the skin that described extension is fixed on to described patient on positioning component,

Wherein, described tube for transfusion is provided with a plurality of infusion holes with predetermined arrangement mode on the sidewall of described transfusion end.

2. poriferous circular venous duct according to claim 1, is characterized in that:

Wherein, the length range of described tube for transfusion is 15cm to 20cm,

The diameter range of each described infusion hole is 0.5mm to 4mm.

3. poriferous circular venous duct according to claim 1, is characterized in that:

Wherein, described predetermined arrangement mode is that a plurality of described infusion holes are arranged in the shape of a spiral on the sidewall of described tube for transfusion.

4. poriferous circular venous duct according to claim 1, is characterized in that:

Wherein, described predetermined arrangement mode is that a plurality of described infusion holes are arranged in a linear on the sidewall of described tube for transfusion.

5. poriferous circular venous duct according to claim 1, is characterized in that:

Wherein, the quantity of described infusion hole is less than 20.

6. poriferous circular venous duct according to claim 1, is characterized in that:

Wherein, described extension end is provided with the calparine cap for sealing tube chamber.

7. poriferous circular venous duct according to claim 1, is characterized in that:

Wherein, the both sides of described positioning component are respectively arranged with locating hole.

8. poriferous circular venous duct according to claim 1, is characterized in that:

Wherein, on described extension, cover is useful on the fluid-delivery valve that presss from both sides stopped pipe chamber.

9. a puncture bag, is characterized in that, comprising:

Be used to form the puncture needle of puncturing hole;

The convergent divergent channel that described puncturing hole is expanded;

For insert the seal wire of described puncturing hole along described puncture needle; And

Insert the poriferous circular venous duct of described puncturing hole,

Wherein, described poriferous circular venous duct is the claims 1 to the poriferous circular venous duct described in any one in claim 8,