Double-cavity biliary-intestinal nutrient canal capable of loading radioactive particles

Abstract

The double-cavity biliary-intestinal nutrient canal capable of loading the radioactive particles comprises a canal body, a canal cavity of the canal body is divided into a main canal of a hollow structure and a branch canal of a hollow structure through a diaphragm, one side of the main canal is connected with the branch canal, one end of the main canal and one end of the branch canal are each provided with a canal head, and the other end of the main canal and the other end of the branch canal are each provided with a catheter head. The pipe cavity of the main pipe is larger than that of the branch pipe; the tube body is fixedly sleeved with a developing ring, the tail end of the main tube is bent to be in a pigtail ring shape, a plurality of side holes are formed in the inner side of the tail end of the main tube, the tip end of the branch tube is a blind end, and a graduated scale is marked on the surface of one side of the branch tube. When the double-cavity biliary-intestinal nutrient canal is applied, radioactive particles can be implanted and stored through the branch tube, local radiotherapy of bile duct cancer is achieved, infusion of nutrition in the jejunum can be achieved through the main tube and the side holes in the pigtail ring, the operation process is simple, and infection and tube disengaging can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical auxiliary tools, in particular to a double-lumen gallen-jenunal nutrition tube capable of carrying radioactive particles. BACKGROUND

[0002] Malignant distal biliary obstruction (MDBO) is commonly seen in patients with pancreatic head cancer, cholangiocarcinoma, periampullary cancer, etc. Due to insidious onset, most patients have entered the locally advanced stage at the time of initial diagnosis, and the prognosis is poor. Biliary obstruction and malnutrition are fatal complications of advanced MDBO. Percutaneous transhepatic cholangial drainage (PTCD) combined with biliary stent implantation, or endoscopic biliary stent placement, is minimally invasive and safe, and has become the first choice for biliary obstruction. However, as the tumor grows, patients may again develop jaundice due to stent obstruction. In addition, due to the influence of multiple factors such as tumor consumption, gastrointestinal dysfunction, and the toxic side effects of drugs during systemic treatment, patients may develop malnutrition and progressively worsen due to loss of appetite and low oral food intake, and their survival time is significantly shortened.

[0003] Maintaining unobstructed biliary tract and improving malnutrition are the focus of palliative treatment for patients with MDBO. Studies have shown that local radiotherapy with I-125 radioactive strips placed through PTCD can prolong the intestinal passage time of biliary stents in patients with cholangiocarcinoma. Another study has shown that PTCD combined with biliary stent implantation is safe and effective for enteral nutrition. Therefore, it is particularly important to conduct related research on the simultaneous implementation of intraluminal local radiotherapy and enteral nutrition therapy through PTCD in patients with MDBO. CONTENT OF THE UTILITY MODEL

[0004] Based on the above problems, the present application provides a double-lumen gallen-jenunal nutrition tube capable of carrying radioactive particles, which solves the problem of how to simplify the operation process, avoid infection and tube loss while simultaneously implementing local radiotherapy for cholangiocarcinoma and jejunal nutrition in the prior art.

[0005] The present application provides a double-lumen gallen-jenunal nutrition tube capable of carrying radioactive particles, which includes a tube body, the lumen of the tube body is divided into a main tube and a branch tube in a hollow structure by a diaphragm, one side of the main tube is connected with the branch tube, one end of the main tube and the branch tube is provided with a tube head, and the lumen of the main tube is larger than that of the branch tube.

[0006] A developing ring is fixedly sleeved on the tube body, the tail end of the main tube is curved in a pigtail shape, a plurality of side holes are arranged on the inner side of the tail end of the main tube, the tip end of the branch tube is a blind end, and a scale is marked on one side surface of the branch tube.

[0007] As a preferred embodiment, the tube body is a polyurethane material tube body.

[0008] As a preferred implementation, the inner and outer surfaces of the lumen of the tube body are further provided with a super-slip hydrophilic coating.

[0009] As a preferred implementation, the material of the developing ring is metal titanium.

[0010] As a preferred implementation, the number of side holes is 2.

[0011] As a preferred implementation, the diameter of the side holes of the main tube is 1.8mm.

[0012] As a preferred implementation, the lumen of the main tube is a hollow semi-cylindrical shape.

[0013] As a preferred implementation, the length of the main tube is 50cm.

[0014] As a preferred implementation, the developing ring is located 30cm from the head end of the tube body and 20cm from the tail end of the tube body.

[0015] As a preferred implementation, the scale is marked in reverse from the tail end to the head end of the branch tube, and the developing ring is arranged at the position of 0.

[0016] Compared with the prior art, the double-lumen gallbladder-intestinal nutrition tube capable of carrying radioactive particles provided by the application comprises a tube body, the lumen of the tube body is divided into a main tube and a branch tube in a hollow structure by a diaphragm, one side of the main tube is connected with the branch tube, one end of the main tube and the branch tube is provided with a tube head, the lumen of the main tube is larger than the lumen of the branch tube; a developing ring is fixedly sleeved on the tube body, the tail end of the main tube is curved into a pigtail shape, the sharp end is a through hole, a plurality of side holes are arranged on the inner side of the tail ring of the main tube, the sharp end of the branch tube is a blind end, and the side surface of the branch tube is provided with a scale. By using the double-lumen gallbladder-intestinal nutrition tube, the branch tube can be implanted and used to store radioactive particles, local radiotherapy of gallbladder cancer can be realized, the main tube and the side holes of the pigtail ring can be used to realize the infusion of jejunal nutrition, the operation process is simple, infection and tube falling can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the application, the drawings required in the embodiments will be briefly introduced below. Obviously, other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0018] Fig. 1 The structure schematic view of the double-lumen gallbladder-intestinal nutrition tube capable of carrying radioactive particles provided by the application is shown in the figure.

[0019] Fig. 2 The cross-sectional schematic view of the double-lumen gallbladder-intestinal nutrition tube capable of carrying radioactive particles provided by the application is shown in the figure.

[0020] In the figure: 1, pipe head; 2, pipe body; 3, main pipe; 4, branch pipe; 5, tail ring; 6, side hole; 7, developing ring; 8, 125-I particle; 9, prosthesis; 30, main pipe official cavity; 40, branch pipe official cavity. DETAILED DESCRIPTION

[0021] In order for those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings.

[0022] As shown in the figure, it is a scheme of the present embodiment. Figs. 1-2

[0023] The double-lumen chole-enteral nutrition tube capable of carrying radioactive particles comprises a pipe body 2, the lumen of the pipe body 2 is divided into a main pipe 3 in a hollow structure and a branch pipe 4 in a hollow structure by a diaphragm, that is, the pipe body 2 is a double-lumen pipe, the specification of the pipe body 2 is selected as 10F, one side of the main pipe 3 is connected with the branch pipe 4, the one end of the main pipe 3 and the one end of the branch pipe 4 are both provided with a pipe head 1, the lumen of the main pipe 3 is larger than the lumen of the branch pipe 4, and when being arranged, the lumen of the main pipe 3 is large and the lumen of the branch pipe 4 is small. The developing ring 7 is fixedly sleeved on the pipe body 2, the tail end of the main pipe 3 is bent into a pigtail shape (tail ring 5), the pigtail shape can avoid the tip of the end damaging the intestinal canal of the patient, the inner side of the tail end of the main pipe 3 is provided with a plurality of side holes 6, the tip of the branch pipe 4 is a blind end, and the one side surface of the branch pipe 4 is provided with a scale.

[0024] Preferably, the pipe body 2 is a polyurethane material pipe body, which is good in flexibility, not easy to be twisted, has excellent biocompatibility, mechanical strength and solvent resistance, and can be placed for a long time. Meanwhile, the inner and outer surfaces of the lumen of the pipe body 2 are also provided with a super-smooth and hydrophilic coating, the application of the hydrophilic coating mainly reduces the friction force when the tube is placed, and can effectively reduce the adhesion of bacteria and the adsorption of protein.

[0025] Preferably, the material of the developing ring 7 is metal titanium, which is used for developing under X-ray perspective when the tube is placed. After the tube is successfully placed, the corresponding anatomical part of the developing ring 7 is the opening of the duodenal papilla.

[0026] In actual arrangement, the main pipe 3 is equal in length to the pipe body 2, and the branch pipe 4 is a side wing opening. Preferably, the lumen of the main pipe 3 is in a hollow semicircular column shape, which can reduce the friction resistance when being placed along the guide wire. The number of the side holes 6 is 2, the side holes 6 are located after the initial segment of the jejunum, and the diameters of the side holes 6 are all 1.8 mm, which are used as channels for the nutrition liquid to flow out and enter the jejunum.

[0027] Preferably, the length of the main pipe 3 is 50 cm, that is, the total length of the pipe body 2 is 50 cm, the branch pipe 4 is shorter than the main pipe 3, the tip of the branch pipe 4 is a blunt end, and the tip is a blind end. The developing ring 7 is located 30 cm away from the head end of the pipe body 2 and 20 cm away from the tail end of the pipe body 2, and the position corresponding to the blind end overlaps with the developing ring 7, that is, the length of the branch pipe 4 is 30 cm. ​

[0028] In this embodiment, preferably, the scale is marked in reverse direction from the tail end to the head end of the branch tube 2, and the marker ring 7 is arranged at the position of 0 on the scale, and the counting is started from the marker ring 7 to the tube head 1, and the scale values are marked every 5 cm.

[0029] The tube head 1 is the starting part. Since the tube body 2 is divided into the main tube 3 and the branch tube 4, there are the main tube head and the branch tube head. The main tube head can be connected with the infusion device or the syringe, and is mainly used for infusion of nutrient solution, and can be closed by a heparin cap when not in use. The branch tube head is closed by a heparin cap. In actual operation, the following steps are needed to be performed:

[0030] The first step is to select the puncture path, and generally the right axillary midline 8-9 rib or 9-10 intercostal space is adopted, and under the X-ray monitoring, the variation of the liver is directly observed, and the height, direction and depth of the puncture point are adjusted.

[0031] The second step is to disinfect and cover the towel, and the local infiltration anesthesia of the puncture point is performed.

[0032] The third step is to cut 3 mm at the selected puncture point by a sharp knife, to puncture the needle, and the horizontal direction is adopted, and the needle tip points to the xiphoid process.

[0033] The fourth step is to generally puncture 8-13 cm, and the relatively thick bile duct is punctured. When the puncture needle is inserted into the bile duct, the breakthrough feeling can be felt. At this time, the needle core is pulled out, the syringe is replaced, the needle is slowly withdrawn, and the suction is performed. If the bile is sucked, the external withdrawal is stopped, and it is indicated that the needle tip is in the bile duct. If the bile is not sucked, the needle is withdrawn to 1 / 2 of the needle path, and the puncture fails. The needle is withdrawn to the subcutaneous, and the puncture is performed again after the direction is slightly changed.

[0034] Alternatively, when the needle is inserted to the appropriate depth, a small amount of contrast agent is first injected, and the position of the needle is judged under the X-ray fluorescent screen display. If the needle is misinserted into the blood vessel, the contrast agent will be diluted and quickly flow away. If the needle is in the liver parenchyma, the contrast agent will remain stationary. If the contrast agent enters the liver and bile duct, the contrast agent can be slowly seen to flow to the hepatic portal.

[0035] The fifth step is to fix the needle after the puncture is successful, to connect the syringe with the plastic tube, to suck out part of the bile, to send the bacterial culture, and to slowly inject 20 ml of warm 30%-50% meglumine diatrizoate. When the patient feels the slight swelling of the liver area, the injection should be stopped, and the radiograph is taken. If the bile duct is highly dilated, the dose of the contrast agent can be appropriately increased.

[0036] The sixth step is to insert the guide wire after the bile flows out smoothly, to continuously rotate and change the direction, so that the guide wire passes through the obstruction end or the narrow segment to enter the distal bile duct, the duodenum and the jejunum, and the puncture needle is withdrawn. The dilatation catheter is used to dilate the channel along the guide wire.

[0037] The seventh step is to dilate the narrow segment and the duodenal nipple by the dilatation catheter along the guide wire and the nutrient solution infusion cavity.

[0038] Step 8, place the biliary metal stent along the guide wire, and the distal end passes through the duodenal papilla into the duodenum 10mm.

[0039] Step 9, implant the "double-lumen biliary- enteric nutrition tube capable of carrying radioactive particles" along the guide wire, so that the visualization ring 7 is located at the opening of the duodenal papilla.

[0040] Step 10, according to the length of the stenosis segment, implant 125-I particles 8 from the particle implantation cavity. After implantation, fill the remaining lumen with particle prosthesis 9, and close the tube head.

[0041] If the patient cannot tolerate long surgery or has severe biliary infection, a common biliary internal-external drainage tube can be placed after step 6, and after one week of drainage, the biliary stent and the double-lumen biliary- enteric nutrition tube provided by the present application can be placed.

[0042] After the tube is placed, the main tube head is connected to the enteral nutrition infusion tube for enteral nutrition infusion. Every 6 hours and at the end of the nutrition infusion, the main tube is flushed with warm water in a pulse manner, and the main tube head is closed with a heparin cap. The branch tube head is also closed with a heparin cap.

[0043] Step 11, when the double-lumen biliary- enteric nutrition tube provided by the present application is removed, it is pulled out of the body in its entirety.

[0044] Step 12, when the double-lumen biliary- enteric nutrition tube provided by the present application is replaced, sterile operation is performed, the guide wire is placed in the main tube, the old tube is pulled out along the guide wire, and the new tube is placed along the guide wire.

[0045] The double-lumen tube provided by the present application is not suitable for patients with severe bleeding tendency, large amount of ascites in the abdominal cavity, or guide wire or catheter that cannot pass through the biliary obstruction site.

[0046] The double-lumen biliary- enteric nutrition tube capable of carrying radioactive particles provided by the present application has the following advantages compared with existing biliary drainage tubes capable of carrying radioactive particles:

[0047] First, the double-lumen biliary- enteric nutrition tube capable of carrying radioactive particles provided by the present application changes the structure of the original bile drainage lumen, making it an enteral nutrition infusion lumen, which has a great change in function, i.e., from a bile drainage tube to an enteral nutrition treatment path.

[0048] Second, the double-lumen biliary- enteric nutrition tube provided by the present application is approximately a tube-in-tube structure, as shown in Fig. 2 The main tube 3 has a larger lumen, and the resistance between the guide wire and the tube wall is small when the guide wire is pushed under the support of the guide wire, making it easy to successfully place the tube. Even if the viscosity of the nutrition liquid is large, it is not easy to cause tube blockage during infusion of the nutrition liquid. The branch tube 4 has a certain elasticity and toughness, and after the radioactive particles are implanted, the prosthesis 9 is filled, which is not easy to displace.

[0049] Thirdly, the double-lumen tube provided by the application is characterized in that the main tube 3 has a tube body length of 50 cm, the tube head 1 can be placed in the upper segment of the jejunum, and intrajejunum feeding can be realized, so that the pressure of the duodenum can be reduced, and the probability of bile reverse infection can be reduced. At the same time, the tube body 2 is long and is not easy to be pulled out of the tube, and the body surface nursing is convenient. The existing conventional disposable feeding biliary drainage tube has a main tube length of only 40 cm, and can only be placed in the duodenum, and is easy to be pulled out of the bile duct along with the respiratory movement, so that the nutrition therapy fails. In addition, the tube body is designed to be short as a whole, so that the extracorporeal part is also too short, which is not convenient for the external fixation of the drainage tube and the skin, and is not convenient for the connection with the enteral nutrition infusion tube.

[0050] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the application be construed as including any variations, uses or adaptations of the application following in general the principles of the application and including such as come within the scope of the following claims and their equivalents. The specification and examples are to be regarded as illustrative only, and the true scope of the application is indicated by the following claims.

[0051] It should be understood that the application is not limited to the precise construction that has been described above and illustrated in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The embodiments of the application described above are intended to be merely exemplary and the true scope of the application is indicated by the following claims.

Claims

1. A dual lumen chole-enteral feeding tube capable of carrying radioactive seeds, characterized in that, The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube.

2. The dual lumen radioisotope carrying gastroenteric feeding tube according to claim 1, wherein, The application relates to a medical tube.

3. The dual lumen radioisotope carrying gastroenteric feeding tube according to claim 1, wherein, The application relates to a medical tube.

4. The dual lumen radioisotope carrying gastroenteric feeding tube according to claim 1, wherein, The application relates to a medical tube.

5. The dual lumen radioisotope carrying gastroenteric feeding tube according to claim 1, wherein, The application relates to a medical tube.

6. The dual lumen radioisotope carrying gastroenteric feeding tube according to claim 5, wherein, The application relates to a medical tube.

7. The dual lumen radioisotope carrying gastroenteric feeding tube according to claim 1, wherein, The application relates to a medical tube.

8. The dual lumen radioisotope carrying gastroenteric feeding tube according to claim 1, wherein, The application relates to a medical tube.

9. The dual lumen radioisotope carrying gastroenteric feeding tube according to claim 8, wherein, The application relates to a medical tube.

10. The dual lumen radioisotope carrying gastroenteric feeding tube according to claim 1, wherein, The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application relates to a medical tube. The application

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