Door body shunting guide pipe suite

Abstract

The invention provides a portal body shunt catheter suite which comprises a body vein catheter and a portal vein catheter, the first end of the body vein catheter is used for being placed in the internal jugular vein or the subclavian vein or the femoral vein, and the second end of the body vein catheter is used for being connected with the second end of the portal vein catheter; the first end of the portal vein catheter is used for being placed in an intrahepatic portal vein. The portal shunt catheter suite comprises the body vein catheter and the portal vein catheter which are connected with each other and work cooperatively, the purpose of portal shunt is achieved, the body vein catheter can be easily placed into the internal jugular vein, the subclavian vein or the femoral vein, and the portal vein catheter can be accurately placed into the intrahepatic portal vein. Blood accumulated in the portal vein of a patient is shunted into systemic circulation, then the portal vein pressure of the patient is reduced, symptoms caused by portal hypertension are relieved for the patient, risks such as esophageal and gastric fundus varicose vein bleeding and ascites can be reduced, and digestive tract bleeding caused by portal hypertension can be effectively treated.

Description

Technical Field

[0001] The present application relates to the field of medical device technology, and in particular to a portosystemic shunt catheter kit. Background Art

[0002] Portal hypertension is a syndrome characterized by persistently elevated portal venous pressure. Most cases are caused by cirrhosis, while a few are secondary to obstruction of the main portal or hepatic veins, as well as other unexplained factors. Elevated portal venous pressure occurs when portal venous blood cannot flow smoothly through the liver into the inferior vena cava. This manifests as the opening of portal-systemic communicating branches, allowing a significant amount of portal venous blood to enter the systemic circulation directly through these branches before entering the liver. This can lead to dilation of the abdominal wall, esophageal veins, and retroperitoneal communicating branches, splenomegaly and hypersplenism, hepatic decompensation, and ascites. Most seriously, dilated veins at the junction of the esophagus and stomach, once ruptured, can cause severe, acute, and life-threatening upper gastrointestinal bleeding. Current treatments include medical medication, transjugular intrahepatic portosystemic shunt (TIPSS), and surgical shunting.

[0003] Transjugular intrahepatic portosystemic shunt (TIPS) is an interventional therapy that utilizes the principle of shunt. A cannula is inserted into the hepatic vein via the internal jugular vein, puncturing the liver parenchyma to enter the portal vein. A stent is then placed within the liver parenchyma to divert portal venous blood flow. Currently, the most commonly used surgical procedure for patients with portal hypertension is transjugular intrahepatic portosystemic shunt (TIPS). This procedure is complex and invasive, and patients with portal hypertension are at high risk of postoperative liver failure and hepatic bleeding. Furthermore, a covered stent is implanted during the procedure to create an artificial channel between the portal vein and the inferior vena cava. Postoperative stent stenosis is high, leading to recurrence of portal hypertension. A second surgery with balloon-expandable stents is required, which is difficult and expensive, placing a heavy burden on patients with portal hypertension who already have limited financial resources.

[0004] Furthermore, current clinical drug treatments are ineffective for patients with cirrhosis and portal hypertension. These patients are often in poor physical condition, making surgery difficult and sometimes impossible. There are no effective treatments for these patients' complications, such as ascites, abdominal distension, and portal hypertensive gastropathy. There is also no portosystemic shunt catheter kit for surgery in patients with cirrhosis and portal hypertension. Summary of the Invention

[0005] The present application is made in view of the above problems, and its purpose is to provide a portosystemic shunt catheter kit.

[0006] Specifically, the first aspect of the present application provides a portosystemic shunt catheter kit, comprising a systemic venous catheter and a portal venous catheter, wherein the first end of the systemic venous catheter is used to be inserted into the internal jugular vein, subclavian vein or femoral vein, and the second end of the systemic venous catheter is used to be connected to the second end of the portal venous catheter; the first end of the portal venous catheter is used to be inserted into the intrahepatic portal vein.

[0007] Furthermore, the portal vein catheter is provided with a valve, and the valve is used to connect to a pressure gauge.

[0008] Furthermore, the portal vein catheter is provided with a first anti-slip sleeve, which is sleeved on the portal vein catheter to enable the first anti-slip sleeve to move relative to the portal vein catheter, so as to fix the portal vein catheter.

[0009] Furthermore, a second anti-slip sleeve is provided on the body venous catheter, and the second anti-slip sleeve is provided on the body venous catheter so as to enable the second anti-slip sleeve to move relative to the body venous catheter, so as to fix the body venous catheter.

[0010] Furthermore, the first anti-slip cover and the second anti-slip cover are provided with fixing holes.

[0011] Furthermore, the first end of the portal vein catheter and the first end of the systemic vein catheter are both provided with a plurality of side holes.

[0012] Furthermore, the portal vein catheter is a 6F-8F portal vein dedicated catheter.

[0013] Furthermore, the body venous catheter is a 6F-7F body venous dedicated catheter.

[0014] Furthermore, it also includes a fixing patch, which is used to fix the systemic venous catheter or the portal vein catheter on the skin.

[0015] Furthermore, it also includes an expansion and support inner core, which is used to cooperate with the portal vein catheter to enhance its ability to enter the body.

[0016] The present invention has the following beneficial effects: The portosystemic shunt catheter kit of the present invention includes a systemic venous catheter and a portal vein catheter, which are interconnected and work together to achieve the purpose of portosystemic shunt. The systemic venous catheter can be easily inserted into the internal jugular vein, subclavian vein or femoral vein, while the portal vein catheter can be accurately inserted into the intrahepatic portal vein, shunting the blood accumulated in the patient's portal vein to the systemic circulation, thereby reducing the patient's portal pressure, improving the symptoms caused by portal hypertension for such patients, helping to reduce the risks of esophageal varicose vein bleeding and ascites, and can effectively treat gastrointestinal bleeding caused by portal hypertension. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present drawings or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present drawings. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the structure of the portosystemic shunt catheter kit; Figure 2 Schematic diagram of the expansion and support core structure; Figure 3 This is a schematic diagram of the portosystemic shunt catheter kit in use; Figure 4 Schematic diagram of the unfolded structure of the first anti-slip cover.

[0019] Explanation of the accompanying figures: 1. Systemic venous catheter; 2. Portal vein catheter; 3. Valve; 4. First anti-slip sleeve; 41. First sleeve body; 42. Second sleeve body; 43. Buckle; 44. Clamp; 45. Catheter accommodating cavity; 5. Second anti-slip sleeve; 6. Fixing hole; 7. Side hole; 8. Fixing patch; 9. Expansion and support inner core.

[0020] The purpose, features and advantages of this drawing will be further described with reference to the accompanying drawings in conjunction with the embodiments. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is described and illustrated below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are merely used to explain this application and are not intended to limit this application. Based on the embodiments provided in this application, all other embodiments obtained by those of ordinary skill in the art without making any creative work are within the scope of protection of this application.

[0022] Obviously, the following descriptions are merely some examples or embodiments of the present application. Those skilled in the art can apply the present application to other similar scenarios without inventive effort. Furthermore, it is also understood that, although the effort involved in such a development process may be complex and lengthy, for those skilled in the art related to the content disclosed in the present application, changes in design, manufacturing, or production based on the technical content disclosed in the present application are merely conventional technical means and should not be construed as an insufficiency of the content disclosed in the present application.

[0023] See also Figures 1 to 3A portosystemic shunt catheter kit includes a systemic venous catheter 1 and a portal venous catheter 2. The first end of the systemic venous catheter 1 is used to be inserted into the internal jugular vein, subclavian vein or femoral vein, and the second end of the systemic venous catheter 1 is used to be connected to the second end of the portal venous catheter 2; the first end of the portal venous catheter 2 is used to be inserted into the intrahepatic portal vein.

[0024] The portosystemic shunt catheter kit of the present invention includes a systemic venous catheter 1 and a portal venous catheter 2, which are interconnected and work together to achieve the purpose of portosystemic shunting. The systemic venous catheter 1 can be easily inserted into the internal jugular vein, subclavian vein or femoral vein, while the portal venous catheter 2 can be accurately inserted into the intrahepatic portal vein, shunting the blood accumulated in the patient's portal vein to the systemic circulation, thereby reducing the patient's portal pressure, improving the symptoms caused by portal hypertension for such patients, and helping to reduce the risks of esophageal variceal bleeding and ascites.

[0025] In this embodiment, the portal vein catheter 2 is provided with a valve 3 for connecting to a manometer. Valve 3 controls the opening and closing of the catheter assembly and the manometer. In the present invention, valve 3 is connected to the manometer, allowing physicians to monitor portal vein pressure changes in real time, providing accurate data support for treatment.

[0026] In this embodiment, a first anti-slip sleeve 4 is provided on the portal vein catheter 2 . The first anti-slip sleeve 4 is sleeved on the portal vein catheter 2 so as to enable the first anti-slip sleeve 4 to move relative to the portal vein catheter 2 and to fix the portal vein catheter 2 .

[0027] The first anti-slip sleeve 4 includes a first sleeve body 41 and a second sleeve body 42. The first sleeve body 41 and the second sleeve body 42 are respectively provided with a buckle 43 and a snap ring 44 that cooperate with each other. When the first sleeve body 41 and the second sleeve body 42 are connected to each other through the buckle 43 and the snap ring 44, a catheter accommodating cavity 45 is formed in the first sleeve body 41 and the second sleeve body 42. The catheter accommodating cavity 45 can allow the catheter to pass through, thereby enabling the first anti-slip sleeve 4 to move relative to the portal vein catheter 2 so that it can fix the portal vein catheter 2.

[0028] In this embodiment, the intravenous catheter 1 is provided with a second anti-slip sleeve 5, which is mounted on the intravenous catheter 1 to enable the second anti-slip sleeve 5 to move relative to the intravenous catheter 1 and to secure the intravenous catheter 1. The structure of the second anti-slip sleeve 5 is the same as that of the first anti-slip sleeve 4.

[0029] Furthermore, the first anti-slip cover 4 and the second anti-slip cover 5 are provided with fixing holes 6. The anti-slip cover is fitted into the appropriate position of the catheter. When the fixing holes 6 are used to fix the systemic venous catheter 1 and the portal vein catheter 2, the fixing holes 6 are connected to the skin with sutures to fix the catheter.

[0030] In the present invention, the first anti-slip cover 4 and the second anti-slip cover 5 are respectively provided on the portal vein catheter 2 and the systemic vein catheter 1, which further improve the stability of the catheter in the body and prevent the catheter from accidentally sliding or falling off.

[0031] In this embodiment, the first end of the portal vein catheter 2 and the first end of the systemic vein catheter 1 are both provided with a plurality of side holes 7. The number of the side holes 7 is 2-5, and the provision of the side holes 7 helps to improve blood flow and enhance the shunting effect.

[0032] In this embodiment, the portal vein catheter 2 is a 6F-8F dedicated portal vein catheter. The systemic vein catheter 1 is a 6F-7F dedicated systemic vein catheter. Both the portal vein catheter 2 and the systemic vein catheter 1 are provided in one piece. Both are made of medical-grade materials with excellent biocompatibility and corrosion resistance, ensuring safety and reliability for patient use. Furthermore, the length and diameter of both catheters are rationally designed based on clinical needs, facilitating operation during surgery and reducing operative time and patient pain.

[0033] In this embodiment, the portosystemic shunt catheter kit also includes a fixation patch 8, which is used to secure the systemic venous catheter 1 or the portal venous catheter 2 to the skin. The fixation patch 8 is butterfly-shaped with a central groove for securing the catheter. Made of medical-grade adhesive material, the fixation patch 8 offers excellent adhesion and breathability, ensuring that the catheter does not fall off during fixation while minimizing skin irritation.

[0034] In this embodiment, the portosystemic shunt catheter kit also includes an expansion and support inner core 9, which is used to cooperate with the portal vein catheter 2 to enhance its ability to enter the body. The expansion and support inner core is similar to the support inner core of the internal and external biliary drainage tube. It is in the shape of a long tube with a conical head end and a hard texture, which is conducive to breaking through the expansion puncture tract. The tail end of the expansion and support inner core and the tail end of the portal vein catheter 2 are respectively provided with an internal thread and an external thread, which can be tightened and combined for use. During the catheter insertion process, the expansion and support inner core 9 plays a guiding and supporting role to ensure that the portal vein catheter 2 can accurately and smoothly enter the intrahepatic portal vein.

[0035] The portosystemic shunt catheter kit of the present invention has a reasonable design, a simple structure, and is easy to operate. It can effectively reduce the portal pressure of patients with portal hypertension and improve the symptoms caused by portal hypertension, and has broad application prospects.

[0036] During specific use, first puncture the internal jugular vein, subclavian vein or femoral vein, insert a guide catheter, use a pre-dilator to expand the puncture channel, insert a 0.035-inch guide wire, and send the systemic venous catheter through the guide wire. Use sutures to fix the systemic venous catheter to the skin surface. Use a syringe to suction the tail end of the systemic venous catheter with negative pressure until venous blood enters the syringe. Then fill the systemic venous catheter with saline, and connect the tail end to a syringe or a three-way valve to prevent blood from flowing out.

[0037] The portal vein branch is then punctured through the right midaxillary line, a guide wire is inserted, and the puncture tract is widened with a pre-dilator. A 0.035-inch guidewire is then inserted over the guidewire. Once the portal vein catheter tip reaches the appropriate position, the support core is removed. Once blood has flowed out of the portal vein, a manometer is connected to measure portal venous pressure. After the pressure measurement is complete, the second end of the portal vein catheter is connected to the second end of the systemic venous catheter to create a portosystemic shunt. The portal vein catheter is then secured to the skin surface with sutures.

[0038] There is a valve near the tail end of the systemic venous catheter, which is connected to a manometer. After opening the valve, the portal vein pressure is measured again to calculate the difference in portal vein pressure drop. The systemic venous catheter is fixed to the skin with a fixation patch.

[0039] When it is necessary to adjust the position of the catheter or perform other operations, the position of the catheter in the body is changed by moving the first anti-slip sleeve and the second anti-slip sleeve, and the catheter is fixed at a suitable position using the fixing hole and sutures.

[0040] The portosystemic shunt catheter kit of the present invention is not only simple to operate, safe, and reliable, but also significantly reduces portal pressure in patients with portal hypertension, improving symptoms associated with portal hypertension and enhancing their quality of life and prognosis. Furthermore, the kit can be widely used in the treatment of various portal hypertension-related diseases, possessing significant clinical value and promotional significance.

[0041] The present invention uses a portosystemic shunt catheter kit to shunt blood accumulated in the patient's portal vein into the systemic circulation, thereby reducing the patient's portal pressure, improving symptoms caused by portal hypertension for such patients, and helping to reduce the risks of esophageal variceal bleeding and ascites. The portal vein-jugular vein and portal vein-subclavian vein shunts are more effective in the supine position, and the portal vein-femoral vein shunt is better in the standing position (taking into account the influence of gravity).

[0042] It should be noted that the present application is not limited to the above-mentioned embodiments. The above-mentioned embodiments are merely examples, and any embodiments having substantially the same structure and effect as the technical concept within the scope of the present application are all included in the technical scope of the present application. In addition, without departing from the scope of the present application, any other embodiments that can be conceived by those skilled in the art and that combine some of the constituent elements in the embodiments are also included in the scope of the present application.

Claims

1. A portal-system shunt catheter kit, characterized in that: The invention comprises a systemic venous catheter (1) and a portal venous catheter (2), wherein the first end of the systemic venous catheter (1) is used for being inserted into the internal jugular vein, the subclavian vein or the femoral vein, and the second end of the systemic venous catheter (1) is used for being connected to the second end of the portal venous catheter (2); and the first end of the portal venous catheter (2) is used for being inserted into the intrahepatic portal vein.

2. The portosystemic shunt catheter kit according to claim 1, characterized in that: The portal vein catheter (2) is provided with a valve (3), and the valve (3) is used to connect to a pressure gauge.

3. The portosystemic shunt catheter kit according to claim 1, characterized in that: The portal vein catheter (2) is provided with a first anti-slip sleeve (4), which is sleeved on the portal vein catheter (2) so as to enable the first anti-slip sleeve (4) to move relative to the portal vein catheter (2) and to fix the portal vein catheter (2).

4. The portosystemic shunt catheter kit according to claim 1, characterized in that: The body venous catheter (1) is provided with a second anti-slip sleeve (5), which is sleeved on the body venous catheter (1) so as to enable the second anti-slip sleeve (5) to move relative to the body venous catheter (1) and to fix the body venous catheter (1).

5. The portosystemic shunt catheter kit according to claim 3 or 4, characterized in that: Fixing holes (6) are provided on the first anti-slip sleeve (4) and the second anti-slip sleeve (5).

6. The portosystemic shunt catheter kit according to claim 1, characterized in that: The first end of the portal vein catheter (2) and the first end of the systemic vein catheter (1) are both provided with a plurality of side holes (7).

7. The portosystemic shunt catheter kit according to claim 1, characterized in that: The portal vein catheter (2) is a 6F-8F portal vein-specific catheter.

8. The portosystemic shunt catheter kit according to claim 1, characterized in that: The body vein catheter (1) is a 6F-7F body vein dedicated catheter.

9. The portosystemic shunt catheter kit according to claim 1, characterized in that: It also includes a fixing patch (8), which is used to fix the body vein catheter (1) or the portal vein catheter (2) on the skin.

10. The portosystemic shunt catheter kit according to claim 1, wherein: It also includes an expansion and support inner core (9), which is used to cooperate with the portal vein catheter (2) to enhance its ability to enter the body.

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