CN221491028U - An intravenous infusion port - Google Patents

Abstract

The utility model discloses an intravenous infusion port, which specifically belongs to the field of intravenous indwelling technology, including an infusion port injection seat, an infusion port catheter, a puncture needle, a deformation buffer ring and a silicone diaphragm; a first receiving groove is provided in the middle of the infusion port injection seat, a silicone diaphragm is embedded in the first receiving groove, and a cavity for the circulation of liquid medicine is reserved between the bottom end of the silicone diaphragm and the bottom of the first receiving groove; a second receiving groove is provided at the upper end of the infusion port injection seat, and a deformation buffer ring is embedded in the second receiving groove; the infusion port catheter is connected to the cavity; the puncture needle vertically punctures the silicone diaphragm, the liquid outlet end of the puncture needle is an inclined surface, and the liquid outlet end of the puncture needle is arranged to face away from one end of the liquid inlet of the infusion port catheter. When the intravenous infusion port is used, the liquid medicine, blood, etc. in the port body can be effectively flushed to prevent infection and tube blockage. At the same time, through the setting of the deformation buffer ring, the impact force of the liquid medicine on the side wall of the infusion port when flushing the side wall can be buffered, so as to avoid the skin around the infusion port being squeezed and causing swelling and pain symptoms.

Description

An intravenous infusion port

Technical Field

The utility model belongs to the technical field of venous indwelling, and in particular relates to a venous infusion port.

Background Art

Totally Implanted Venous Access Port (TIVAP) is a safe and effective long-term venous indwelling system that implants an intravenous drug delivery device in the human body to achieve the purpose of long-term infusion and chemotherapy. It can reduce the pain and difficulty of repeated venous punctures, prevent irritating drugs from damaging peripheral veins, increase patients' freedom in daily life, and improve their quality of life. Therefore, it has been widely used in the infusion of chemotherapy drugs in patients with malignant tumors.

Chinese utility model patent CN2022225338106 discloses an intravenous infusion port, which has the risk of thrombosis due to blockage of the intravenous infusion port's liquid passage tube. However, if the structure of the intravenous infusion port's infusion tube catheter is too complicated, it will not only increase the production cost, but its own complex structure will also easily affect the flux of the liquid medicine. In addition, when flushing the intravenous infusion port, the liquid medicine will cause a certain amount of squeezing on the surrounding skin, causing local discomfort symptoms. Therefore, on the basis of the above problems, further improvements are still needed.

Utility Model Content

The utility model aims to provide an intravenous infusion port, which can effectively flush the liquid medicine, blood, etc. in the port body when in use, and prevent infection and tube blockage. At the same time, the deformation buffer ring can buffer the impact force of the liquid medicine on the side wall of the infusion port when flushing, and avoid the skin around the infusion port from being squeezed and causing swelling and pain.

In order to achieve the above purpose, the utility model provides the following technical solutions:

A venous infusion port, comprising an infusion port injection seat, an infusion port catheter, a puncture needle, a deformation buffer ring and a silicone diaphragm;

A first receiving groove is provided in the middle of the injection seat of the infusion port, a silicone diaphragm is embedded in the first receiving groove, and a cavity for the circulation of the drug solution is left between the bottom end of the silicone diaphragm and the bottom of the first receiving groove;

A second receiving groove is provided at the upper end of the injection seat of the infusion port, and the deformation buffer ring is embedded in the second receiving groove;

The infusion port catheter is connected to the cavity;

The puncture needle vertically punctures the silicone diaphragm, the liquid outlet end of the puncture needle is an inclined surface, and the liquid outlet end of the puncture needle is arranged to face away from one end of the liquid inlet of the infusion port catheter.

How does an IV port work and what are its benefits?

During use, the injection seat of the infusion port is implanted into the subcutaneous tissue, and the puncture needle is vertically inserted into the silicone diaphragm until the liquid outlet end of the puncture needle is located in the cavity formed between the silicone diaphragm and the bottom of the first receiving groove. The puncture needle is a non-destructive needle. The end of the non-destructive needle has some curvature, and will not cut the silicone diaphragm of the infusion port during puncture, thereby avoiding damage to the silicone diaphragm and leakage, and the cut particles blocking the catheter and blood vessels. The liquid outlet end of the non-destructive needle is a bevel, and the bevel of the needle tip is facing away from the infusion port catheter. A 180-degree vortex is formed during flushing, which can effectively flush the liquid medicine, blood, etc. in the infusion port to prevent infection and blockage. Through this use, there is no need to add a complex anti-blocking mechanism in the catheter to affect the flux of the liquid medicine, and it can also play a role in clearing blood clots and liquid medicine.

At the same time, by installing a deformation buffer ring in the second receiving groove, the impact force caused by flushing the inner wall of the infusion port can be buffered, thereby preventing the infusion port from squeezing the surrounding subcutaneous tissue after being subjected to force, thereby preventing the subcutaneous tissue from swelling and pain.

Preferably, the infusion port injection seat and the deformation buffer ring are both made of silicone material.

In the present application, the infusion port injection seat and the deformation buffer ring are both made of silicone material, which has the advantage that the non-destructive needle is implanted into the infusion port injection seat of the human body through percutaneous puncture. The needle is inserted vertically into the cavity through the silicone diaphragm puncture septum, and the drug can be injected or continuously dripped. The drug flows out through the end of the infusion port catheter into the central vein. In clinical work, the left hand is generally used to find the position of the infusion port first, and the thumb, index finger and middle finger of the left hand form a triangle, and the infusion port is arched. The center of these three fingers is determined as the puncture point. The non-destructive needle is vertically inserted into the puncture septum from the center of the three fingers to reach the bottom of the reservoir. The silicone infusion port injection seat is soft in material, which can avoid damage to the subcutaneous tissue during operation.

Preferably, a buffer groove is provided at the upper end of the injection seat of the infusion port to prevent the infusion line from crushing the skin.

When fixing the puncture needle seat, if the line tube contacts the skin for a long time, it will cause pressure damage, so a buffer groove is set on the injection seat of the infusion port. When the line is placed on the skin above the buffer groove, the pressure on the skin in the area will be reduced, avoiding local pressure damage.

Preferably, the intravenous infusion port further comprises a fixed patch, which is attached to the skin corresponding to the injection seat of the infusion port.

The role of fixed dressing:

In order to protect the corresponding skin covering the intravenous infusion port and avoid infection caused by foreign matter or bacteria, the setting of the fixed dressing can also prevent slipping during the three-finger fixation method puncture.

Preferably, the intravenous infusion port further comprises a connector, one end of which is threadedly fixed to the injection seat of the infusion port, and the other end of which is sleeve-fixed to the catheter of the infusion port.

The setting of the connector can make the insertion of the infusion port more convenient and avoid the one-piece pipeline blocking the surgical view.

Preferably, the end of the connector close to the injection seat of the infusion port is a threaded section, and correspondingly, the side end of the injection seat of the infusion port is provided with a threaded groove that penetrates the cavity.

Preferably, a fixing ring is provided at the inner end of the connector facing away from the injection seat of the infusion port, and a gap is left between the fixing ring and the inner wall of the connector for the infusion port catheter to be inserted and fixed.

The connector and the infusion tube are connected by threads, and the infusion port catheter and the connector are fixed by sleeve connection.

Preferably, the fixed dressing is made of non-woven fabric.

The non-woven material has good breathability and low cost, is easy to replace, and avoids redness and swelling of the skin that comes into contact with the fixed dressing.

Compared with the prior art, the beneficial effects of the utility model are:

1. When flushing, the bevel of the needle tip is facing away from the catheter port, forming a 180-degree vortex, which can effectively flush the liquid medicine, blood, etc. in the port body to prevent infection and blockage.

2. By setting a deformation buffer ring, it is possible to prevent the liquid medicine from impacting the surrounding skin when flushing the inside of the intravenous infusion port, causing symptoms of swelling and pain.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of an intravenous infusion port provided in Example 1;

FIG2 is a schematic diagram (cross-sectional structure) of a venous infusion port provided in Example 1;

FIG3 is a schematic diagram of the structure of an intravenous infusion port provided in Example 1 (without a fixed patch);

FIG. 4 is a schematic diagram of the structure of an intravenous infusion port provided in Example 2 (with a positioning ring added).

In the figure: 1. puncture needle, 2. fixing patch, 3. silicone diaphragm, 4. infusion port injection seat, 5. subcutaneous tissue, 6. fixing ring, 7. infusion port catheter, 8. connector, 9. threaded groove, 10. deformation buffer ring, 11. buffer groove.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Example 1

This embodiment further describes the intravenous infusion port from the perspective of application:

A venous infusion port, the main body of which includes an infusion port injection seat 4, an infusion port catheter 7, a puncture needle 1, a deformation buffer ring 10, a silicone diaphragm 3, a fixed dressing 2 and a connector 8.

As shown in FIG2 , the infusion port injection seat 4 is implanted in the subcutaneous tissue 5. After installation, one end of the infusion port catheter 7 is connected to the central vein, and the other end is connected to the connector 8. The puncture needle 1 is a non-destructive needle and is vertically inserted into the silicone diaphragm 3. Here, the bevel liquid outlet of the non-destructive needle should be located on the side facing away from the connector 8, which can make the flushing effect better.

In terms of manufacturing materials, the intravenous infusion port is made of silicone, which has a soft texture and avoids redness and swelling of the surrounding skin after puncture and infusion using the three-finger fixation method.

Fixed dressings can be made of non-woven fabrics or foam patches. Both are lightweight and can avoid pressure injuries caused by prolonged contact between the device and the skin.

The above-mentioned intravenous infusion port is more practical in clinical work, easy to obtain, and easier to promote in clinical practice.

Example 2

This embodiment is further improved on the basis of embodiment 1, and a positioning ring 12 is fixed on the outer end of the skin. The positioning ring 12 is attached to the skin by a fixed patch, and a positioning groove 14 is provided at the corresponding position of the positioning ring 12 and the connector 8. After the connector 8 is inserted into the skin, a small range of protrusions will appear on the skin. The positioning groove 14 can prevent the connector 8 and the liquid passage tube from moving, and a notch 13 is provided on the opposite side of the positioning groove 14. The notch can allow the extension tube of the non-injury needle to pass through the middle, and the angle is strictly in accordance with the guide standard: that is, the bevel of the non-injury needle is 180° with the outlet of the infusion port catheter, which effectively reduces the incidence of tube blockage infection.

Claims (8)

1. An intravenous transfusion port comprises a transfusion port injection seat (4), a transfusion port catheter (7) and a puncture needle (1), and is characterized by also comprising a deformation buffer ring (10) and a silica gel diaphragm (3);

the middle part of the transfusion port injection seat (4) is provided with a first accommodating groove, the silica gel diaphragm (3) is embedded in the first accommodating groove, and a cavity for flowing liquid medicine is reserved between the bottom end of the silica gel diaphragm (3) and the bottom of the first accommodating groove;

The upper end of the transfusion port injection seat (4) is provided with a second accommodating groove, and a deformation buffer ring (10) is embedded in the second accommodating groove;

The transfusion port catheter (7) is communicated with the cavity;

The puncture needle (1) is vertically punctured in the silica gel diaphragm (3), the liquid outlet end of the puncture needle (1) is an inclined plane, and the liquid outlet end of the puncture needle (1) is arranged at one end, which is opposite to the liquid inlet of the transfusion harbor catheter (7).

2. An intravenous port according to claim 1, characterized in that the port injection seat (4) and the deformation buffer ring (10) are both made of silicone material.

3. An intravenous port according to claim 1, characterized in that the upper end of the port injection seat (4) is provided with a buffer groove (11) for preventing the infusion line from damaging the skin.

4. An intravenous port according to claim 1, further comprising a fastening application (2), said fastening application (2) being applied to the skin of the port in correspondence of the injection seat (4).

5. An intravenous port according to claim 1, further comprising a connector (8), wherein one end of the connector (8) is screwed to the port injection seat (4) and the other end is sleeved to the port catheter (7).

6. An intravenous port according to claim 5, characterized in that the end of the connector (8) adjacent to the port injection seat (4) is a threaded section, and correspondingly, the port injection seat (4) is provided with a threaded groove (9) extending through the cavity at the side end.

7. An intravenous port according to claim 5, characterized in that the inner end of the connector (8) facing away from the port injection seat (4) is provided with a securing ring (6), and that a port catheter (7) is inserted into a fixed gap between the securing ring (6) and the inner wall of the connector (8).

8. An intravenous port according to claim 4, wherein the fastening patch (2) is made of a nonwoven material.