Abdominocentesis drainage assembly

Abstract

The invention discloses an abdominal cavity puncture drainage assembly which comprises an injector, a puncture needle, a right-angle bent pipe with a plug, a drainage catheter, a boosting clamp, a drainage pipe, a liquid collection bag and an air bag. The key use steps are as follows: puncturing; the puncture section enters the abdominal cavity of the patient. Expanding the skin; the reducing section and the skin expanding section are slowly inserted into the abdominal cavity of a patient, and the puncture hole is gradually expanded. Placing a tube; the whole drainage catheter is sleeved on the puncture needle, a doctor holds the boosting clamp to clamp the drainage catheter on the outer side of the belly, and the drainage catheter is gradually clamped and inserted into the belly of a patient. Two parts of a guide wire and a skin expander in the prior art are omitted, skin expansion can be directly performed after puncture, the risk of organ injury in the operation process is reduced, and the puncture and drainage device has the advantages of guaranteeing comfort of a patient, preventing drainage liquid from flowing back and improving puncture and drainage operation efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to an abdominal puncture and drainage component. Background Art

[0002] The abdominal cavity is an irregular cystic space formed by the continuation of the wall membrane and the organ membrane. It is a serous membrane covering the surface of the abdominal wall and the abdominal organs. This membrane composed of a single layer of squamous epithelium and connective tissue is thin and smooth. In a healthy person, there is 50 ml of liquid in the abdominal cavity, which is clear, colorless and tasteless and plays a lubricating role. However, the amount of serous fluid in the abdominal cavity is not fixed, but the production and absorption are in dynamic balance. In pathological conditions, more fluid can be produced, which is called peritoneal effusion or water accumulation. According to the nature and cause of the effusion, it is divided into effusion and transudate. Distinguishing the nature of the effusion and benign effusion is of great significance for the diagnosis and treatment of the disease. Abdominal puncture and drainage is mainly a therapeutic operation in which a puncture needle is inserted into the abdominal cavity through the abdominal wall, and then a drainage tube is inserted to drain the effusion, blood, pus or other abnormal fluid in the abdominal cavity out of the body. This technology plays an important role in clinical situations. For example, for patients with abdominal infection, such as abdominal abscess caused by appendicitis perforation, this operation can drain purulent secretions, reduce inflammatory response, and relieve the patient's abdominal pain, fever and other symptoms. In patients with cirrhosis and ascites, when a large amount of ascites accumulates, causing the patient to suffer from unbearable abdominal distension, difficulty breathing and other discomfort, abdominal puncture and catheter drainage can effectively drain the ascites and improve the patient's symptoms.

[0003] In the prior art, the steps for abdominal puncture and catheter drainage are: 1. Use iodine or alcohol to perform routine disinfection on the puncture needle. 2. Perform local infiltration anesthesia on the puncture point located by B-ultrasound or CT. 3. Allow the puncture needle to enter the abdominal cavity, and withdraw the visible peritoneal effusion sample for inspection. 4. Pull out the puncture needle and insert the metal guide wire into the patient's abdominal cavity along the puncture needle hole. 5. Skin expansion operation, there is a central hole on the skin expander, and the outer end of the guide wire is passed through the central hole of the skin expander. The skin expander enters the puncture needle hole along the guide wire to expand the puncture needle hole. 6. Pull out the skin expander, the drainage catheter is put on the guide wire and inserted into the patient's abdominal cavity along the guide wire. 7. Fixation and drainage: Fix the drainage catheter and pull out the guide wire, connect the drainage catheter to the drainage bag, and collect the peritoneal effusion. The disadvantages of the above operation are: in step 4-5, the puncture needle is pulled out and the guide wire is inserted into the abdominal cavity, the central hole of the skin expander is expanded along the guide wire, the skin expander is taken out, and the drainage catheter is inserted into the abdominal cavity along the guide wire. The guide wire and the skin expander make the entire puncture and drainage process complicated and cumbersome, and there is a risk of damaging organs. The drainage catheter is made of polyurethane and is easy to bend when inserted into the abdominal cavity, which increases the insertion time and patient discomfort, and reduces the operational efficiency of abdominal puncture and drainage. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an abdominal puncture and drainage assembly, which has the characteristics of streamlining puncture components, reducing operation steps, reducing the risk of organ damage, preventing reflux of accumulated fluid, improving operation efficiency and ensuring patient comfort.

[0005] An abdominal puncture and drainage assembly includes a syringe, a puncture needle, a right-angle elbow with a plug, a drainage catheter, and a booster clamp;

[0006] The puncture needle is provided with a puncture section, a diameter-changing section and a skin-expanding section in sequence from left to right, the diameter of the puncture section is smaller than the diameter of the skin-expanding section, the diameter-changing section is located between the puncture section and the skin-expanding section and is provided with a smooth transition outer peripheral surface;

[0007] The left port of the right-angle elbow can be adapted to be connected to the right end of the expansion section, and the lower port can be adapted to be connected to the nipple of the syringe;

[0008] The length of the drainage catheter is shorter than the length of the entire puncture needle, the inner diameter of the drainage catheter is larger than the outer diameter of the skin expansion segment, and a plurality of side drainage holes are provided on the outer periphery of the insertion end of the drainage catheter;

[0009] The upper part of the booster clamp is provided with two symmetrical semicircular clamping openings, the clamping hole formed by closing the clamping openings has a diameter smaller than the outer diameter of the drainage catheter and the clamping hole is provided with an internal thread;

[0010] The above-mentioned abdominal puncture and drainage component also includes a drainage tube, a fluid collection bag and an air bag. One end of the drainage tube is provided with a sleeve that can be connected to the drainage catheter, and the other end is provided with a branch tube that can be connected to the syringe; the fluid collection bag is provided with a liquid inlet pipe and an exhaust pipe, the tube mouth of the drainage tube is inserted into the liquid inlet pipe mouth and plugged, and the neck of the air bag can be inserted into the exhaust pipe and remain sealed.

[0011] The present invention provides an abdominal puncture and drainage assembly, which has the following beneficial technical effects:

[0012] First, compared with the prior art, the device eliminates the need for two components, the guide wire and the skin expander, and reduces the two steps of inserting the guide wire and expanding the skin with the skin expander, which can reduce repeated entry into the puncture site. A diameter-reducing section and a skin expansion section are added to the puncture needle, and the puncture needle gradually thickens from the puncture section to the skin expansion section. After entering the abdominal cavity, the diameter-reducing section and the skin expansion section are directly inserted to expand the skin, which reduces the operation time and the risk of organ damage during the operation. Because the puncture point has been anesthetized in advance, the patient's discomfort will not increase.

[0013] Second, since there is always a puncture needle at the puncture site to exert pressure and stop bleeding, repeated entry and exit is reduced, and bleeding from burr vessels at the puncture site is reduced.

[0014] Third, the length of the drainage catheter is shorter than the length of the entire puncture needle, and the inner diameter is larger than the outer diameter of the skin expansion segment, which facilitates the installation of the drainage catheter on the puncture needle and the withdrawal of the puncture needle. The booster clamp can clamp the drainage catheter and move it into the abdominal cavity. The clamp hole is provided with a tooth pattern formed by an internal thread, which can firmly hold the drainage catheter and prevent it from slipping off, so that the drainage catheter can be reduced in diameter and become thinner in the diameter-changing segment, making it easier to enter the patient's belly, avoiding delays due to the easy bending of the drainage catheter and ensuring the effectiveness of the drainage catheter insertion action.

[0015] Fourth, a right-angle elbow with a plug is used to connect the puncture needle. The right-angle elbow serves as a handle to facilitate the doctor to hold the puncture needle in a balanced manner during the operation. When the puncture section enters the abdominal cavity, the plug can be immediately pulled out and a syringe can be pressed to draw out the abdominal fluid for examination, saving operation steps and time.

[0016] Fifth, the neck of the airbag is inserted into the exhaust pipe and kept sealed with the inner wall of the exhaust pipe, so as to facilitate the extraction of air in the liquid collection bag, prevent the drainage fluid from flowing back and speed up the drainage speed.

[0017] The present invention eliminates the two components of the guide wire and the skin expander in the prior art, and can directly expand the skin after puncture, thereby reducing the risk of organ damage during the operation, and has the characteristics of ensuring patient comfort, preventing drainage fluid backflow and improving the efficiency of puncture and drainage operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the connection structure between the puncture needle and the right-angle elbow with a blockage in the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of removing the plug and installing a syringe to extract the effusion sample;

[0020] Figure 3 is a schematic diagram of the structure of the drainage catheter;

[0021] Figure 4 It is a schematic diagram of the structure of the booster clamp;

[0022] Figure 5 yes Figure 4 Right view of;

[0023] Figure 6 yes Figure 4 AA view in;

[0024] Figure 7 It is a schematic diagram of the structure of the booster clamp clamping the drainage catheter sleeved on the puncture needle;

[0025] Figure 8 It is a schematic diagram of the structure of connecting the puncture needle with the drainage tube to the liquid collection bag.

[0026] The components in the figure are numbered as follows: puncture section 1, reducing section 2, skin expansion section 3, puncture needle 4, right-angle elbow 5, plug 6, drainage catheter 7, side drainage hole 8, syringe 9, patient's belly 10, clamp 11, internal thread 12, booster clamp 13, handle 14, sleeve 15, drainage tube 16, branch tube 17, liquid inlet tube 18, liquid collecting bag 19, air bag 20, exhaust pipe 21, cotton gauze roll 22, and the pipe mouth 23 of the drainage tube. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0028] like Figures 1 to 8 An abdominal puncture and drainage assembly is shown, in which the puncture needle 4 of the present invention is made of stainless steel, the outer diameter of the puncture section 1 can be 2 mm, the outer diameter of the skin expansion section 3 can be 4-4.8 mm, the drainage catheter 7 is made of medical grade polyurethane (TPU) material, the inner diameter can be 5 mm, and the booster clamp 13 can be made of injection molding or stainless steel.

[0029] Embodiment 1: An abdominal puncture and drainage assembly comprises a syringe 9, a puncture needle 4, a right-angle elbow 5 with a plug 6, a drainage catheter 7 and a booster clamp 13; the puncture needle 4 is provided with a puncture section 1, a diameter-reducing section 2 and a skin expansion section 3 from left to right, the diameter of the puncture section 1 is smaller than the diameter of the skin expansion section 3, the diameter-reducing section 2 is located between the puncture section 1 and the skin expansion section 3 and is provided with a smooth transition outer peripheral surface; the left port of the right-angle elbow 5 can be adaptively connected to the right end of the skin expansion section 3, and the lower port thereof can be adaptively connected to the nipple of the syringe 9; the length of the drainage catheter 7 is smaller than the length of the entire puncture needle 4, the inner diameter of the drainage catheter 7 is larger than the outer diameter of the skin expansion section 3, and a plurality of side drainage holes 8 are provided on the outer periphery of the insertion end of the drainage catheter 7; the upper part of the booster clamp 13 is provided with two symmetrical semicircular clamps 11, the diameter of the clamp hole formed by closing the clamp 11 is smaller than the outer diameter of the drainage catheter 7 and the clamp hole 11 is provided with an internal thread.

[0030] Embodiment 2: An abdominal puncture and drainage assembly includes a syringe 9, a puncture needle 4, a right-angle elbow 5 with a plug 6, a drainage catheter 7 and a booster clamp 13; the puncture needle 4 is provided with a puncture section 1, a diameter-reducing section 2 and a skin expansion section 3 from left to right, the diameter of the puncture section 1 is smaller than the diameter of the skin expansion section 3, the diameter-reducing section 2 is located between the puncture section 1 and the skin expansion section 3 and is provided with a smooth transition outer peripheral surface; the left port of the right-angle elbow 5 can be adaptively connected to the right end of the skin expansion section 3, and its lower port can be adaptively connected to the nipple of the syringe 9; the length of the drainage catheter 7 is less than the length of the entire puncture needle 4, and the inner diameter of the drainage catheter 7 is larger than the outer diameter of the skin expansion section 3, A plurality of side drainage holes 8 are provided on the periphery of the insertion end of the drainage catheter 7; two symmetrical semicircular clamps 11 are provided on the upper part of the booster clamp 13, the diameter of the clamp hole formed by closing the clamp 11 is smaller than the outer diameter of the drainage catheter 7 and the clamp hole 11 is provided with an internal thread; it also includes a drainage tube 16 and a liquid collecting bag 19, one end of the drainage tube 16 is provided with a sleeve 15 that can be connected to the drainage catheter 7, and the other end is provided with a branch tube 17 that can be connected to the syringe 9; the liquid collecting bag 19 is provided with a liquid inlet pipe 18, an exhaust pipe 21 and an air bag 20, the pipe mouth 23 of the drainage pipe is inserted into the mouth of the liquid inlet pipe 18 and plugged, and the neck of the air bag 20 can be inserted into the exhaust pipe 21 and kept sealed.

[0031] The method of using the present invention comprises the following steps:

[0032] 1. Disinfection: The doctor uses iodine or alcohol to disinfect the puncture area to ensure sterility.

[0033] 2. Anesthesia: Anesthetize the puncture point located by color ultrasound, B-ultrasound or CT.

[0034] 3. Puncture; (see Figure 2 ) The doctor needs an assistant to assist in the operation. The doctor installs the right-angle elbow 5 with the plug 6 at the right end of the skin expansion segment 3, holds the right-angle elbow 5 with the right hand, and uses the left hand to make the puncture segment 1 enter the patient's abdominal cavity. The assistant pulls out the plug 6 and connects the syringe 9 to draw out the abdominal fluid sample for pathological examination; then removes the right-angle elbow 5 and the syringe 9, and plugs the outer port of the skin expansion segment 3 with a cotton gauze roll 22 to prevent air from entering the abdominal cavity.

[0035] Fourth, skin expansion; the assistant holds the outer end of the skin expansion segment 3 to keep the puncture needle 4 balanced, and the doctor slowly inserts the reducing segment 2 and the skin expansion segment 3 into the patient's abdominal cavity to expand the puncture hole, and the assistant holds the puncture needle 4 to keep it balanced.

[0036] 5. Catheterization; (see Figure 7) The doctor puts the entire drainage catheter 7 onto the puncture needle 4 and exposes the outer end of the puncture needle 4. The assistant clamps the outer end of the puncture needle 4 with a tool to keep it balanced and positioned. The doctor holds the booster clamp 13 to clamp the drainage catheter 7 on the outside of the belly 10, clamping and pushing the patient's belly 10 one by one, so that the side drainage holes 8 on the periphery of the drainage catheter 7 are completely inserted into the patient's belly 10. The assistant pulls out the puncture needle 4 from the drainage catheter 7, and the doctor holds the entire drainage catheter 7 to keep it balanced and prepares for drainage.

[0037] 6. Drainage; (see Figure 8 ) The assistant quickly connects the sleeve 15 on the drainage tube 16 with the drainage catheter 7, inserts the tube mouth 23 of the drainage tube 16 into the liquid inlet tube 18 on the fluid collecting bag 19, connects the syringe 9 to the branch tube 17 at a position higher than the fluid collecting bag 19, and uses the syringe 9 to draw out the accumulated fluid in the patient's abdominal cavity. As soon as the accumulated fluid comes out, the syringe 9 is immediately raised to open the exhaust pipe 21 for ventilation, allowing the accumulated fluid to flow into the fluid collecting bag 19; if the flow rate of the accumulated fluid is slow, the airbag 20 can be flattened so that its neck is tightly inserted into the exhaust pipe 21 on the fluid collecting bag 19, so that the negative pressure generated by the airbag 20 sucks out the air in the fluid collecting bag 19 and speeds up the flow rate of the accumulated fluid.

[0038] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs may also make appropriate changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention.

Claims

1. A peritoneal puncture and drainage assembly, comprising a syringe (9), characterized in that: It also includes a puncture needle (4), a right-angle elbow (5) with a plug (6), a drainage catheter (7) and a booster clamp (13); The puncture needle (4) is provided with a puncture section (1), a diameter-changing section (2) and a skin-expanding section (3) in sequence from left to right. The diameter of the puncture section (1) is smaller than the diameter of the skin-expanding section (3). The diameter-changing section (2) is located between the puncture section (1) and the skin-expanding section (3) and is provided with a smooth transition outer peripheral surface. The left end of the right-angle elbow (5) can be adapted to be connected to the right end of the expansion section (3), and the lower end thereof can be adapted to be connected to the nipple of the syringe (9); The length of the drainage catheter (7) is shorter than the length of the entire puncture needle (4), the inner diameter of the drainage catheter (7) is larger than the outer diameter of the skin expansion segment (3), and a plurality of side drainage holes (8) are provided on the outer periphery of the insertion end of the drainage catheter (7); The booster clamp (13) is provided with two symmetrical semicircular clamping openings (11) on its upper portion. The clamping hole formed by closing the clamping openings (11) has a diameter smaller than the outer diameter of the drainage catheter (7), and the clamping hole (11) is provided with an internal thread.

2. The abdominal puncture and drainage assembly according to claim 1, characterized in that: It also includes a drainage tube (16), a liquid collecting bag (19) and an air bag (20); one end of the drainage tube (16) is provided with a sleeve (15) that can be connected to the drainage catheter (7), and the other end is provided with a branch tube (17) that can be connected to the syringe (9); the liquid collecting bag (19) is provided with a liquid inlet pipe (18) and an exhaust pipe (21); the pipe mouth (23) of the drainage tube is inserted into the mouth of the liquid inlet pipe (18) and plugged tightly, and the neck of the air bag (20) can be inserted into the exhaust pipe (21) and kept sealed.

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