Circulating infusion port

Abstract

The utility model discloses a circulating type infusion port which comprises an injection seat, a valve seat, a valve seat, a valve seat, a valve seat, a valve seat, a valve seat, a valve seat, a valve seat, a valve seat, a valve seat, a valve seat and a valve seat cover, and the valve seat is provided with a cavity and a puncture diaphragm. The cavity is divided into an injection cavity and a protection cavity; the circulating catheter is communicated with one end of the injection cavity, and the circulating catheter is communicated with the upstream of a certain blood vessel of a patient during use; and the dispersion catheter is communicated with the other end of the injection cavity, and when in use, the dispersion catheter is communicated with the downstream of a certain blood vessel of a patient. According to the utility model, blood can circulate in the infusion port when infusion is not carried out, so that the blood cannot reside in the dispersed catheter for a long time, and thrombus is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a circulating infusion port. Background Art

[0002] Intravenous injection is a very common treatment method, but during the process of intravenous injection, the concentration of the drug solution is high, and direct contact with the blood vessel wall can easily lead to venous diseases, such as phlebitis and venous necrosis. The emergence of the infusion port solves this problem. It is a vascular access device that is completely placed in the human body and is suitable for medium- and long-term (3-6 months and above) intravenous treatment. It is generally divided into upper arm infusion ports and chest wall infusion ports. In clinical practice, chest wall infusion ports are more often chosen. They are usually used for patients such as cancer patients who need long-term infusion and have poor immunity, fragile body tissues, and vasoconstriction that makes injection difficult. Medical staff use a needle to pierce the infusion port to give patients intravenous injections and blood transfusions. The infusion port mainly includes an injection seat and a catheter. The catheter is implanted in the patient's veins, and the drug solution is injected into the injection seat. The drug solution is slowly released into the patient's blood through the catheter, thereby avoiding direct contact of the high concentration of drug solution with the blood vessel wall. However, when the infusion port is not in use, blood will flow back into the catheter and remain there for a long time. In order to prevent blood from clotting and forming a thrombus on the inner wall of the catheter, the infusion port needs to be tested and cleared each time it is used, and urokinase will be injected into the patient to degrade fibrinogen, coagulation factor V and coagulation factor VIII in the blood circulation, thereby reducing the patient's blood clotting ability. This makes the operation process cumbersome, the treatment cost increases, and it will have a negative impact on the patient's health, causing the patient's wound healing time to be slower. Utility Model Content

[0003] The purpose of the utility model is to provide a circulating infusion port to address the deficiencies of the prior art. The infusion port can allow blood to circulate in the infusion port when no infusion is given, so that the blood cannot stay in the dispersed catheter for a long time, thereby avoiding the formation of thrombus.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A circulating infusion port, comprising:

[0006] An injection seat having a cavity thereon, and a puncture diaphragm is also provided on the injection seat, and the puncture diaphragm separates the cavity into an injection cavity and a protection cavity;

[0007] A circulation catheter is connected to one end of the injection chamber. When in use, the circulation catheter is connected to an upstream of a blood vessel of the patient;

[0008] The dispersion catheter is communicated with the other end of the injection cavity. When in use, the dispersion catheter is communicated with a downstream of a blood vessel of the patient.

[0009] Furthermore, a base is provided, which wraps the injection seat on its inner side, and the base is trumpet-shaped.

[0010] Furthermore, the end surface of the circulation catheter that is connected to the patient's blood vessel is curved.

[0011] Furthermore, one end of the circulation catheter connected to the patient's blood vessel is in a conical shape, the diameter of which gradually increases as it approaches the injection seat.

[0012] Furthermore, a plurality of circulation holes are provided on the end surface of the circulation catheter which is in communication with the patient's blood vessel.

[0013] Furthermore, a plurality of slow-release holes are arranged on the side wall of one end of the dispersion catheter that is in communication with the patient's blood vessel.

[0014] Furthermore, a fixing seat is provided on the base, and a plurality of suture holes for fixing the base are provided on the fixing seat.

[0015] Furthermore, the circulation catheter is combined with the dispersion catheter and then implanted into the patient's blood vessel, wherein the circulation catheter is implanted against the direction of blood flow and the dispersion catheter is implanted along the direction of blood flow.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the infusion port of this embodiment enables blood to enter the circulation catheter from the blood vessel and then flow into the injection cavity and the dispersion catheter when no infusion is performed, thereby completing the blood circulation inside the infusion port, so that the blood cannot stay in the dispersion catheter for a long time, thereby avoiding the formation of thrombus; the present invention can avoid thrombus formation without any operation. Compared with the prior art, it not only omits cumbersome operating steps, but also improves treatment efficiency and reduces costs; there is no need to inject urokinase into the patient, which will not have a negative impact on the patient's health. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a circulating infusion port provided by an embodiment of the utility model;

[0018] Figure 2 It is a partial cross-sectional view of a circulating infusion port according to an embodiment of the utility model. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0021] The present invention will be further described below in conjunction with specific embodiments, but this is not intended to limit the present invention.

[0022] like Figure 1 and Figure 2 As shown, the embodiment of the utility model discloses a circulating infusion port, including an injection seat 110, a circulation catheter 200 and a dispersion catheter 300. Among them, there is a cavity in the injection seat 110. A puncture diaphragm 140 is arranged at the upper part of the cavity, and the puncture diaphragm 140 divides the cavity into an injection cavity 130 and a protection cavity 180. Among them, the injection cavity 130 and the protection cavity 180 are both closed cavities and are not connected to each other. In order to facilitate the installation of the circulation catheter 200 and the dispersion catheter 300, an input end 150 and an output end 160 extend from both ends of the injection cavity.

[0023] The circulation catheter 200 is made of a flexible tube. One end of the circulation catheter 200 is connected to the input end of the injection cavity 130 so as to communicate with the injection cavity 130. The other end of the circulation catheter 200 is implanted into the patient's vein against the direction of blood flow. The material of the other end of the circulation catheter 200 is softer, and its end is in the shape of a borderless curved surface. In order to facilitate the entry of blood, this section of the circulation catheter 200 is set to be a cone whose diameter gradually increases as it gradually approaches the injection seat, and a plurality of circulation holes 210 are provided on the end surface.

[0024] The dispersion catheter 300 is also made of a flexible tube body. One end of the dispersion catheter 300 is connected to the input end of the injection chamber 130 to communicate with the injection chamber 130. The other end of the dispersion catheter 300 is implanted into the patient's vein along the direction of blood flow. A plurality of sustained-release holes 310 are also provided on the side wall of the other end of the dispersion catheter 300.

[0025] In order to facilitate the fixation of the injection seat 110, a base 120 is integrally formed on the outer side of the injection seat 110. The base 120 wraps the injection seat 110 on its inner side, and the base is trumpet-shaped, thereby increasing the fixing area. The base 120 is made of skin-friendly materials such as silicone. In addition, a plurality of fixing seats are evenly spaced on the skirt of the base 120, and a plurality of suture holes 170 are provided on the fixing seats, through which the base 120 is sutured to the human body.

[0026] In order to reduce the pain caused to the patient by multiple implantations in the blood vessels, the circulation catheter 200 and the dispersion catheter 300 are implanted at one end of the patient's blood vessel and put together to form an integral catheter. During implantation, the catheter only needs to be implanted into the human blood vessel once and ensure that the implanted end of the circulation catheter 200 is against the direction of blood flow, while the dispersion catheter 300 is in the direction of blood flow. There is no need for two implantations, which reduces the pain of the patient.

[0027] When using the circulating infusion port of this embodiment, the infusion port is implanted into the patient's chest or upper arm, and the base 120 is sutured into the patient's body through the suture hole 170 to prevent the infusion port from shifting. The integrated catheter is then implanted into a certain blood vessel of the patient, and the implanted end of the circulating catheter 200 is ensured to be against the direction of blood flow, and the dispersed catheter 300 is along the direction of blood flow. During injection, the injection needle pierces the puncture septum 140, and the injection liquid is input from the injection cavity 130 into the dispersed catheter 300, and then from the dispersed catheter 300 into the patient's blood vessel, thereby completing the infusion. When no injection is performed, due to the provision of the circulation catheter 200, blood enters the injection cavity 30 from the circulation catheter 200 and then flows out from the dispersion catheter 300. According to the Bernoulli principle, the blood at the end outlet position of the circulation catheter 200, under the influence of the blood naturally flowing in the human blood vessels, will move toward the downstream direction of the blood flow, thereby generating a certain negative pressure suction force, thereby drawing the blood to flow in the injection cavity 130 and the dispersion catheter 300, thereby completing the blood circulation inside the infusion port, making it impossible for the blood to stay in the dispersion catheter 300 for a long time, and avoiding the formation of thrombus. The utility model can avoid thrombosis without any operation. Compared with the prior art, it not only omits cumbersome operation steps, improves treatment efficiency, and reduces costs; it does not need to inject urokinase into the patient, and will not have a negative impact on the patient's health.

[0028] The above are only preferred embodiments of the present invention, and do not limit the implementation mode and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the contents of the present invention specification should be included in the protection scope of the present invention.

Claims

1. A circulating infusion port, characterized in that: include: An injection seat having a cavity thereon, and a puncture diaphragm is also provided on the injection seat, and the puncture diaphragm separates the cavity into an injection cavity and a protection cavity; A circulation catheter is connected to one end of the injection chamber. When in use, the circulation catheter is connected to an upstream of a blood vessel of the patient; The dispersion catheter is communicated with the other end of the injection cavity. When in use, the dispersion catheter is communicated with a downstream of a blood vessel of the patient.

2. The circulating infusion port according to claim 1, characterized in that: A base is also provided, which wraps the injection seat on its inner side, and the base is trumpet-shaped.

3. The circulating infusion port according to claim 1, characterized in that: The end surface of one end of the circulation catheter communicating with the patient's blood vessel is in a curved shape.

4. The circulating infusion port according to claim 3, characterized in that: One end of the circulation catheter connected to the patient's blood vessel is in a conical shape, the diameter of which gradually increases as it approaches the injection seat.

5. The circulating infusion port according to claim 3 or 4, characterized in that: A plurality of circulation holes are arranged on the end surface of the circulation catheter which is connected with the patient's blood vessel.

6. The circulating infusion port according to claim 1, characterized in that: A plurality of sustained-release holes are arranged on the side wall of one end of the dispersion catheter which is in communication with the patient's blood vessel.

7. The circulating infusion port according to claim 2, characterized in that: A fixing seat is also arranged on the base, and a plurality of suture holes for fixing the base are arranged on the fixing seat.

8. The circulating infusion port according to claim 1, characterized in that: The circulation catheter is combined with the dispersion catheter and then implanted into the patient's blood vessel, wherein the circulation catheter is implanted against the direction of blood flow and the dispersion catheter is implanted along the direction of blood flow.

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