Disposable nipple dilator

Abstract

This invention relates to the field of medical device technology and proposes a disposable sphincter incision knife, including a cutting head with a guidewire connector inserted at the tail end. A fluid injection assembly is mounted on the guidewire connector, and a drive telescopic assembly is located at one end of the guidewire connector. The fluid injection assembly includes an injection tube connected to the guidewire connector. The injection tube is tilted and has a stepped groove at its end. A protective cap is fastened to the stepped groove, and the protective cap and stepped groove are sealed together. A conical cover is installed inside the injection tube, and the conical cover is sealed to the injection tube. This technical solution solves the problems of existing sphincter incision knives used in conjunction with high-frequency surgical equipment and flexible endoscopes for pancreaticobiliary cannulation and sphincter incision, where the knife is difficult to advance and retract, and the injection of medication easily leads to spillage.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a disposable nipple sphincter cutter. Background Technology

[0002] Sphincter muscles are circular muscles located in the walls of certain lumens in humans and animals, and are often particularly thickened. In humans, sphincter muscles are found in the digestive tract and urinary system.

[0003] The ileocecal sphincter, located at the junction of the terminal ileum and cecum, prevents ileal contents from flowing into the cecum; it also prevents ileal contents from entering the large intestine too quickly, prolonging the residence time of chyme in the small intestine, facilitating complete digestion and absorption, and preventing reflux of large intestine contents into the ileum. The internal urethral sphincter, located at the junction of the urethra and bladder, closes the internal urethral orifice upon contraction, preventing urine leakage. The membranous portion of the urethra (urogenital diaphragm) contains the urethral sphincter, composed of striated muscles and under conscious control. In the anal canal, there is a strong muscular ring called the anorectal ring, composed of the internal anal sphincter, superficial and deep external anal sphincter muscles, levator ani muscle, and longitudinal rectal muscles. This ring plays a crucial sphinctering role in the anal canal; damage to it will lead to fecal incontinence. The internal anal sphincter has no sphincter function, only assisting in defecation. The external anal sphincter, composed of striated muscles, is under conscious control and relaxes during defecation.

[0004] When used with high-frequency surgical equipment and flexible endoscopes for pancreaticobiliary cannulation and sphincterotomy, commonly used sphincterotomy knives suffer from difficulties in insertion and withdrawal, and are prone to leakage when injecting medication. Therefore, a disposable sphincterotomy knife was developed. Summary of the Invention

[0005] This invention proposes a disposable sphincterotomy knife, which solves the problems in related technologies where commonly used sphincterotomy knives are difficult to advance and retract, and prone to leakage when adding medication, when used with high-frequency surgical equipment and flexible endoscopes for pancreaticobiliary cannulation and sphincterotomy.

[0006] The technical solution of the present invention is as follows: including A shredder head, the tail end of which is connected to a wire guide connector; The fluid injection assembly is disposed on the guide wire connector; A drive telescopic assembly is disposed at one end of the guide wire connector; The injection assembly includes an injection tube that is connected to the guide wire connector. The injection tube is inclined and has a stepped groove at its end. A protective cap is fastened to the stepped groove and the protective cap is sealed to the stepped groove. A conical cover is provided inside the injection tube and is sealed to the injection tube.

[0007] As a further technical solution, the bottom of the conical cover is provided with a filling port, and an injection insert is provided on the filling port, with the injection insert being sealed between the injection insert and the filling port.

[0008] As a further technical solution, the drive telescopic assembly includes a fixed sleeve, which is fitted onto the guide wire connector. The fixed sleeve has a pressure relief groove, a connecting frame is provided on the side wall of the fixed sleeve, a finger ring is provided on the connecting frame, a push rod is inserted into the fixed sleeve, and a handle is provided at the end of the push rod.

[0009] As a further technical solution, a conductive tube is provided on the fixing sleeve, and a conductive post is provided on the top of the conductive tube.

[0010] As a further technical solution, the end of the slicing head is provided with an insert groove, and a developing ring is embedded in the insert groove.

[0011] The working principle and beneficial effects of this invention are as follows: In this invention, the protective cap in the injection assembly can seal and protect the injection tube. When injecting the medication, the injection can be performed by inserting the injection needle into the injection insert cotton on the conical cover. It can be used in conjunction with endoscopic operations to facilitate endoscopic treatment operations, such as enlarging the opening of the duodenal papilla, for example, biliary stenting and basket stone removal. Attached Figure Description

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a side view of the filling tube of the present invention; Figure 3 This is a side view of the shredder head of the present invention; Figure 4 This is a cross-sectional view of the injection pipe of the present invention; In the diagram: 1. Cutting head; 2. Guide wire connector; 3. Injection assembly; 3-1. Injection tube; 3-2. Stepped groove; 3-3. Protective cap; 3-4. Conical cover; 3-5. Injection port; 3-6. Injection insert cotton; 4. Drive telescopic assembly; 4-1. Fixing sleeve; 4-2. Pressure relief groove; 4-3. Connecting frame; 4-4. Finger ring; 4-5. Push rod; 4-6. Handle; 5. Conductive tube; 6. Conductive post; 7. Insertion groove; 8. Imaging ring. Detailed Implementation

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0015] like Figures 1-4 As shown, this embodiment proposes a disposable nipple sphincter cutter, including... A shredder head 1 is provided, and a wire guide connector 2 is inserted into the tail end of the shredder head 1. Liquid injection assembly 3 is mounted on guide wire connector 2; Drive telescopic assembly 4, which is located at one end of guide wire connector 2; The injection assembly 3 includes an injection tube 3-1, which is connected to the guide wire connector 2. The injection tube 3-1 is inclined and has a stepped groove 3-2 at its end. A protective cap 3-3 is fastened to the stepped groove 3-2 and is sealed to the stepped groove 3-2. A conical cover 3-4 is installed inside the injection tube 3-1 and is sealed to the injection tube 3-1.

[0016] Specifically, the bottom of the conical cover 3-4 is provided with an injection port 3-5, and an injection insert cotton 3-6 is provided on the injection port 3-5, with a sealed insert between the injection insert cotton 3-6 and the injection port 3-5.

[0017] In this embodiment, the protective cap 3-3 can seal and protect the injection tube 3-1. When injecting the medicine, the injection can be performed by inserting the injection needle into the injection insert cotton 3-6 on the conical cover 3-4.

[0018] Furthermore, the drive telescopic assembly 4 includes a fixed sleeve 4-1, which is fitted onto the guide wire connector 2. The fixed sleeve 4-1 has a pressure relief groove 4-2. A connecting frame 4-3 is provided on the side wall of the fixed sleeve 4-1. A finger ring 4-4 ​​is provided on the connecting frame 4-3. A push rod 4-5 is inserted into the fixed sleeve 4-1. A handle 4-6 is provided at the end of the push rod 4-5.

[0019] Furthermore, a conductive tube 5 is provided on the fixed sleeve 4-1, a conductive post 6 is provided on the top of the conductive tube 5, and an embedding groove 7 is provided at the end of the shredder head 1, with a developing ring 8 embedded in the embedding groove 7.

[0020] When using this device, remove the cutting blade from the packaging bag, ensure the shaped wire is in the guide wire lumen of the cutting blade catheter, and remove the shaped wire from the sheath (carefully remove it, maintaining the shape of the cutting blade head). Check that the cutting blade head is in the appropriate orientation, and ensure that the sheath is free from damage, knots, twisting, etc. Knots will cause obstruction of the injection chamber of the sheath; discontinue use. If the cutting blade is found to be damaged, please contact the manufacturer for replacement. Confirm that the patient's body is correctly positioned according to the instructions of the high-frequency electrogenerator. If contrast agent needs to be injected, please use a 20ml (20cc) syringe connected to the injection Luer connector for injection. The cutting blade preparation is now complete.

[0021] Insert the cutting blade into the endoscope in the correct direction. If the endoscope channel diameter is greater than or equal to 2.8 mm, a guidewire ≤ Ø0.89 mm can be used in conjunction with the cutting blade. After the cutting blade enters the biliary system, inject contrast agent into the biliary system and use X-ray fluoroscopy to capture its position, ensuring the cutting wire remains visible in the endoscope's view during withdrawal. Incorrect operation may cause the cutting wire to come into contact with the endoscope while powered on, potentially harming the patient, damaging the cutting wire, or damaging the endoscope. When using the cutting blade for surgical procedures... Before the procedure, use the image transmitted through the endoscope to ensure that the cutting wire is placed in the appropriate position in the tissue. Before turning on the power, please confirm that the cutting wire has fully extended out of the endoscope. Turning on the power when the cutting wire is in contact with the metal part of the endoscope may cause patient injury, cutting wire breakage, or endoscope damage. Adjust the high-frequency generator to the appropriate power and voltage, and use the cutting knife to perform electrocautery or electrocoagulation on the duodenal papilla. After use, push the cutting knife ring 4-4 ​​to the farthest distance. At this time, the forceps should be in the lowered position. Remove the cutting knife from the endoscope.

[0022] When used with a guidewire: The guidewire lumen of the standard cutting knife is a closed cavity. The cutting knife is slowly withdrawn from the endoscope along the guidewire lumen to prevent the guidewire from exiting the pancreaticobiliary system; the guidewire lumen of the quick-change cutting knife is an open cavity. After the guidewire is fixed, the cutting knife can be quickly withdrawn from the side of the guidewire lumen from the endoscope.

[0023] Because electrical surgical procedures are greatly affected by the shape and material of the electrodes, it is difficult to provide precise control parameters. Therefore, it is recommended to start by setting the parameters of the high-frequency electric generator in a low range, and then carefully increase the power until satisfactory results are achieved.

[0024] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A disposable nipple sphincterotome characterized in that, Includes a shredder (1), the tail end of which is connected to a wire guide connector (2); The liquid injection assembly (3) is disposed on the guide wire connector (2); A drive telescopic assembly (4) is disposed at one end of the guide wire connector (2); The injection assembly (3) includes an injection tube (3-1), which is connected to the guide wire connector (2). The injection tube (3-1) is inclined and has a stepped groove (3-2) at its end. A protective cap (3-3) is fastened to the stepped groove (3-2), and the protective cap (3-3) is sealed to the stepped groove (3-2). A conical cover (3-4) is provided inside the injection tube (3-1), and the conical cover (3-4) is sealed to the injection tube (3-1).

2. The single-use nipple-retractor according to claim 1, characterized in that The bottom of the conical cover (3-4) is provided with a filling port (3-5), and an injection insert cotton (3-6) is provided on the filling port (3-5). The injection insert cotton (3-6) is sealed and inserted between the filling port (3-5).

3. The single-use nipple-restrictive dilator of claim 1, wherein, The drive telescopic assembly (4) includes a fixed sleeve (4-1), which is fitted onto the guide wire connector (2). The fixed sleeve (4-1) has a pressure relief groove (4-2). A connecting frame (4-3) is provided on the side wall of the fixed sleeve (4-1). A finger ring (4-4) is provided on the connecting frame (4-3). A push rod (4-5) is inserted into the fixed sleeve (4-1). A handle (4-6) is provided at the end of the push rod (4-5).

4. The single-use nipple-restrictive dilator of claim 3, wherein, The fixed sleeve (4-1) is provided with a conductive tube (5), and a conductive post (6) is provided on the top of the conductive tube (5).

5. The disposable nipple sphincter cutter according to claim 1, characterized in that, The end of the shredder (1) is provided with an insert groove (7), and a developing ring (8) is inserted in the insert groove (7).

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