Electrocoagulation and electroresection snare under direct view of oral bile duct endoscope

Abstract

The utility model belongs to the technical field of medical treatment, and particularly relates to an electrocoagulation and electroresection snare under direct view of an oral cholangioscope. Comprising a core rod and a hand ring, the front end of the core rod is connected with a sheath tube, the flexible rod is arranged in the sheath tube in a penetrating mode, and the end of the flexible rod is fixedly connected with the hand ring; the electric cutting knife is arranged at the other end part of the flexible rod, and the electric cutting knife is connected with the ferrule. The diameter of the sheathing canal of the novel snare is 1 mm, the novel snare sheathing canal can be used in cooperation with a bile duct endoscope, direct and real-time observation and operation can be conducted under the bile duct endoscope, and the accuracy and timeliness of an operation are improved; the electric cutting knife is arranged, so that small and large polyps can be cut off through the electric cutting knife, or the large polyps can be cut off conveniently through the snare after being cut off; the flexible rod is provided with the cavity and is matched with the through hole, liquid medicine can be dropwise added to the cut part, and ulceration infection of the cut part is avoided.

Description

Technical Field

[0001] The utility model belongs to the field of medical technology, and in particular relates to an electric coagulation and electric cutting snare under direct vision of a transoral bile ductoscope. Background Art

[0002] With the advancement of imaging technology and the popularization of direct-view diagnostic technology under oral cholangiopancreatoscopy, the detection rate of polypoid lesions in the common bile duct, common hepatic duct and gallbladder has gradually increased. Biliary polypoid lesions have a certain risk of malignant transformation, and patients often fall into the dilemma of excessive treatment with surgical resection and missing the best time for surgery with follow-up observation. Snares are mainly used for endoscopic removal of various polyps and excess tissues with high-frequency electricity. However, it is difficult to remove smaller or larger polyps. Smaller polyp snares are not easy to remove for cutting, and larger polyp snares cannot be inserted.

[0003] To address this issue, the existing application number "201520224932.4" "A rotatable snare with an injection needle" adds an injection needle to the snare to achieve water injection and protrusion of smaller polyps, and then uses the snare to remove the tissue, greatly shortening the operation time and increasing surgical efficiency.

[0004] However, this technology still has the following problems:

[0005] 1. The water injection of this device will not only cause the polyps to bulge, but also easily lead to problems such as ulceration of normal tissues after water injection;

[0006] 2. This device cannot solve the problem that larger polyps cannot be snare removed. Summary of the invention

[0007] The purpose of the utility model is to provide an electrocoagulation and electroresection snare under direct vision of a peroral choledochoscope, which can overcome the shortcomings of the above-mentioned prior art. The snare sheath of the novel snare has a diameter of 1 mm and can be used in conjunction with a choledochoscope. It can be directly and in real time observed and operated under the choledochoscope, thereby improving the accuracy and timeliness of the operation. An electric cutting knife is provided, which can be used to remove smaller and larger polyps, or to divide larger polyps for convenient snare removal. The flexible rod is provided with a cavity and a through hole, which can be used to drip medicine on the cut part to avoid ulceration and infection of the cut part.

[0008] In order to achieve the above technical effects, the technical solutions adopted by the present utility model are as follows:

[0009] An electrocoagulation and electroresection snare under direct vision of a transoral choledochoscope comprises a core rod and a hand ring, wherein the front end of the core rod is connected to a sheath tube, and further comprises:

[0010] A flexible rod, the flexible rod is inserted into the sheath tube, and the end of the flexible rod is fixedly connected to the bracelet;

[0011] An electric cutting knife is arranged at the other end of the flexible rod and is connected with the ferrule.

[0012] Preferably, the flexible rod is provided with a cavity, the end connected to the electric cutting knife is provided with a through hole penetrating the cavity, and the other end is connected with the card connector through a channel provided in the bracelet.

[0013] Preferably, the diameter of the sheath is 1 mm.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The diameter of the snare sheath of this new type is 1mm, which can be used with a choledochoscope, enabling direct and real-time observation and operation under the choledochoscope, thus improving the accuracy and timeliness of the operation;

[0016] 2. The new model is equipped with an electric cutter, which can be used to remove small and large polyps, or to divide large polyps to facilitate snare removal;

[0017] 3. The new flexible rod is provided with a cavity and a through hole, so that medicine can be dripped onto the cut part to avoid ulceration and infection of the cut part. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0019] In the attached picture:

[0020] Figure 1 This is a schematic diagram of the structure of the electric coagulation and cutting snare of the utility model;

[0021] Figure 2 for Figure 1 A magnified view of part A;

[0022] Figure 3 It is a cross-sectional view of the card connector of the utility model;

[0023] Figure 4 for Figure 3 A magnified view of part B;

[0024] Among them, 1. core rod, 2. bracelet, 3. sheath tube, 4. electrical connector, 5. card connector, 6. ferrule, 7. electric cutting knife, 8. through hole, 9. channel, 10. flexible rod. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0026] Example:

[0027] See attached Figure 1-4 A transoral choledochoscope-based electrocoagulation and electroresection snare comprises a core rod 1 and a bracelet 2. The front end of the core rod 1 is connected to a sheath tube 3. The diameter of the sheath tube 3 is 1 mm. The choledochoscope can pass through the sheath tube 3 with a diameter of 1 mm, and can then be directly and in real time observed and operated under the choledochoscope, thereby improving the accuracy and timeliness of the operation.

[0028] Also includes:

[0029] The flexible rod 10 is made of nickel-titanium alloy, which is the same material as the ferrule 6. The flexible rod 10 is provided with a cavity and has certain toughness and strength. The flexible rod 10 is passed through the sheath 3, and the end is welded or bonded to the bracelet 2; the end of the flexible rod 10 connected to the electric cutting knife 7 is provided with a through hole 8 that passes through the cavity, and the other end is connected to the card connector 5 through a channel 9 opened in the bracelet 2, and the channel 9 is a passage opened in the bracelet 2.

[0030] The card connector 5 can be connected to a syringe.

[0031] The electric cutting knife 7 is integrally formed at the other end of the flexible rod 10 , and the electric cutting knife 7 is integrally formed and connected with the ferrule 6 .

[0032] The wristband 2 is also provided with an electric connector 4 , which provides energy to the ferrule 6 .

[0033] Practical method and principle of this utility model:

[0034] When in use, the sheath 3 of the electrocoagulation and electroresection snare is inserted into the channel of the choledochoscope, and enters the common bile duct, common hepatic duct or gallbladder of the patient together with the choledochoscope. After reaching the location of the polyp, the operation is performed according to the situation observed by the choledochoscope. If the snare can cover it, it can be directly removed. If not, the electric cutting knife 7 is powered on first to cut or split it. After the removal is completed, the syringe is inserted into the card connector 5, and the medicine is injected, which drips from the through hole 8 to the patient's surgical site, thereby achieving the dressing and treatment of the wound.

[0035] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An electrocoagulation and electroresection snare under direct vision of a transoral choledochoscope, comprising a core rod (1) and a wristband (2), wherein the front end of the core rod (1) is connected to a sheath tube (3), and characterized in that: Also includes: A flexible rod (10), the flexible rod (10) being inserted into the sheath tube (3) and having an end fixedly connected to the bracelet (2); An electric cutting knife (7) is arranged at the other end of the flexible rod (10), and the electric cutting knife (7) is connected to the ferrule (6).

2. The electrocoagulation and electroresection snare under direct vision of a transoral choledochoscope according to claim 1, characterized in that: The flexible rod (10) is provided with a cavity, and an end portion connected to the electric cutting knife (7) is provided with a through hole (8) penetrating the cavity, and the other end is connected to the card connector (5) through a channel provided in the bracelet (2).

3. The electrocoagulation and electroresection snare under direct vision of a transoral choledochoscope according to claim 2, characterized in that: The diameter of the sheath tube (3) is 1 mm.

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