Disposable high-frequency nipple sphincter incision knife

Abstract

The disposable high-frequency nipple sphincter incision knife comprises a connecting sleeve, a fixing sleeve is fixedly connected to the top of the connecting sleeve, two fixing side boxes are symmetrically and fixedly connected to the outer side of the fixing sleeve, limiting sliding plates are slidably connected to the interiors of the fixing side boxes, and ejector rods are fixedly connected to the tops of the limiting sliding plates; the cutting device has the beneficial effects that the metal elastic pieces and the bevel edge clamping blocks are additionally arranged, the bevel edge clamping blocks limit the positions of the limiting top plate and the extending-in pipe body, so that the extending-in pipe body is stretched, the knife wire body is exposed to the outside, cutting treatment is conducted through the knife wire body, and the cutting effect is good. And a limiting sliding plate and an ejector rod are additionally arranged, so that when the bevel edge clamping block leaves the position limitation of the limiting ejector plate, the limiting sliding plate and the ejector rod are jacked to move upwards through the reset of a first spring, the ejector rod jacks the limiting ejector plate and extends into a pipe body to move upwards, and the position of the cutter wire body is stored.

Description

Technical Field

[0001] The invention relates to the technical field of papillary sphincterotomy, in particular to a disposable high-frequency papillary sphincterotomy knife. Background Art

[0002] There are two main uses of the trocar in therapeutic ERCP: 1. Dilate the duodenal sphincter to assist the doctor in inserting the catheter into the duodenal papilla under the guidance of the guidewire. The trocar assists in intubation mainly in the "bow" and "toughness" of the trocar. In addition, if it is equipped with a rotatable trocar, it has multi-directional control capabilities such as "up, down, left, and right", which can be used to assist in guidewire intubation; 2. Cut the duodenal sphincter to expand its opening to meet the subsequent treatment needs such as removing common bile duct stones. The trocar is mainly used to cut the bile duct sphincter, that is, the inner segment of the duodenal wall of the sphincter of Oddi, so the length and size of the incision should not be perforated and meet the subsequent treatment such as stone removal. The trocar is a necessary instrument in EST surgery. The trocar is divided into a pull-type bow trocar and a needle-shaped trocar. The most widely used one is the pull-type bow trocar. Most of the patients who need EST can use a pull-type arcuate sphincterotomy, but the existing disposable high-frequency papillary sphincterotomy is not easy to disassemble and replace, and the disposable sphincterotomy is not easy to separate when installing the electrode plug. It is also not easy to extend and adjust the blade wire that needs to be extended inside. The overall structure is disposable, which wastes a lot of materials and causes unnecessary waste of the sphincterotomy as a whole. Summary of the invention

[0003] The object of the present invention is to provide a disposable high-frequency papillary sphincterotomy knife to solve the problem that the existing disposable high-frequency papillary sphincterotomy knife mentioned in the above background technology is not convenient for disassembly and replacement, the disposable knife is not convenient for separation when installing the electrode plug, and the blade wire that needs to be extended inside is not convenient for extension and adjustment. The overall structure is disposable, which wastes the use of a lot of materials and causes unnecessary waste of the knife as a whole.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a disposable high-frequency sphincterotomy knife comprises a connecting sleeve, the top of the connecting sleeve is fixedly connected to a fixing sleeve, the outer side of the fixing sleeve is symmetrically fixedly connected to two fixed side boxes, the inner side of the fixing side box is slidably connected to a limiting slide, the top of the limiting slide is fixedly connected to a push rod, the push rod is slidably connected to the fixed side box, a No. 1 spring is provided inside the fixed side box, one end of the No. 1 spring is fixedly connected to the limiting slide, an externally threaded column is installed above the fixing sleeve, the inner side of the externally threaded column is slidably connected to an insertion tube body, the outer side of the insertion tube body is symmetrically fixedly connected to two limiting top plates cooperating with the push rod, the limiting top plate is slidably connected to the externally threaded column, and the insertion tube body A guide wire cavity is provided inside the tube body, a guide wire tube matching the guide wire cavity is fixedly connected to one side of the tube body extending into the tube body, the guide wire tube is communicated with the guide wire cavity, an injection cavity is provided inside the tube body extending into the tube body, an injection tube matching the injection cavity is fixedly connected to one side of the tube body extending into the tube body, the injection tube is communicated with the injection cavity, a guide wire body is installed inside the guide wire cavity and the guide wire tube, a No. 2 knife wire through hole is provided inside the tube body extending into the tube body, a No. 1 knife wire through hole matching the No. 2 knife wire through hole is provided inside the connecting sleeve and the fixing sleeve, a knife wire body is installed inside the No. 1 knife wire through hole and the No. 2 knife wire through hole, an installation groove is provided at the bottom of the connecting sleeve, a high-frequency electrode plug is installed on the inner side of the installation groove, and one end of the knife wire body is fixedly connected to the high-frequency electrode plug.

[0005] As a preferred solution of the present invention: the outer sides of the two fixed side boxes are fixedly connected with side panels, the inner sides of the side panels are fixedly connected with metal spring sheets, one side of the metal spring sheets is fixedly connected with a beveled edge block that cooperates with the limiting top plate, the beveled edge block is movably connected to the side panels, the side of the metal spring sheets away from the beveled edge block is fixedly connected with a pull plate, one side of the side panel is provided with a movable opening, and the pull plate is movably connected to the movable opening.

[0006] As a preferred solution of the present invention: a fixing box is fixedly connected to the bottom of the high-frequency electrode plug, a fixing block is slidably connected inside the fixing box, and a mounting slot matching the fixing block is provided inside the mounting slot.

[0007] As a preferred solution of the present invention: a thread groove matching with the external thread column is formed on the top of the fixing sleeve.

[0008] As a preferred solution of the present invention: a movable plate is fixedly connected to one side of the fixed block, the movable plate is slidably connected to the fixed box, a No. 2 spring is provided inside the fixed box, and one end of the No. 2 spring is fixedly connected to the movable plate.

[0009] As a preferred solution of the present invention: a pressure plate is slidably connected inside the fixed box, an adjusting rod is fixedly connected to one side of the pressure plate, an adjusting bevel is opened inside the movable plate, the adjusting rod is slidably connected to the adjusting bevel, a threaded rod is fixedly connected to the bottom of the pressure plate, and the threaded rod is slidably connected to the fixed box.

[0010] As a preferred solution of the present invention: a pressing plate is fixedly connected to the bottom of the threaded rod.

[0011] As a preferred solution of the present invention: the outer side of the threaded rod is threadedly connected with a limiting nut.

[0012] As a preferred solution of the present invention: two sliding handles are symmetrically fixedly connected to the outer side of the connecting sleeve.

[0013] As a preferred solution of the present invention: a plastic coating layer is provided on the outer side of the guide wire body, and the plastic coating layer is made of polytetrafluoroethylene material.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: by adding metal spring pieces and beveled edge blocks, the present invention realizes that the beveled edge blocks limit the position of the limit top plate and the inserted tube body, thereby stretching the inserted tube body, exposing the knife wire body to the outside, and cutting through the knife wire body; by adding a limit slide plate and a push rod, when the beveled edge block leaves the position restriction on the limit top plate, the limit slide plate and the push rod are pushed upward by the reset of the No. 1 spring, and the push rod pushes the limit top plate and the inserted tube body upward to store the position of the knife wire body; by adding a block and an installation slot, the block and the installation slot are installed and fixed, the fixing box and the high-frequency electrode plug are installed and fixed in the installation slot, the position of the knife wire body is installed and fixed, and the high-frequency electrode plug and the knife wire body can be conveniently disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the internal structure of the present invention; Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle; Figure 3 For the present invention Figure 1 Enlarged view of point B in the middle; Figure 4 It is a schematic diagram of the structure of the guide wire body of the present invention.

[0016] In the figure: 1. Connecting sleeve; 2. Fixing sleeve; 3. Fixed side box; 4. Limiting slide plate; 5. Ejector rod; 6. No. 1 spring; 7. Side plate; 8. Metal spring; 9. Bevel block; 10. Pull plate; 11. Movable opening; 12. Slide handle; 13. No. 1 knife wire through hole; 14. High-frequency electrode plug; 15. Fixing box; 16. Fixing block; 17. Mounting slot; 18. Moving plate; 19. Adjusting bevel slot; 20. , No. 2 spring; 21, adjusting rod; 22, pressure plate; 23, threaded rod; 24, limiting nut; 25, pressing plate; 26, mounting groove; 27, threaded groove; 28, external threaded column; 29, limiting top plate; 30, extending into the tube body; 31, No. 2 knife wire through hole; 32, knife wire body; 33, guide wire cavity; 34, injection cavity; 35, guide wire tube; 36, injection tube; 37, guide wire body; 38, plastic coating layer. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0018] See also Figures 1 to 4The present invention provides a technical solution: a disposable high-frequency papillary sphincterotomy knife, comprising a connecting sleeve 1, a fixed sleeve 2 is fixedly connected to the top of the connecting sleeve 1, two fixed side boxes 3 are symmetrically fixedly connected to the outside of the fixed sleeve 2, a limiting slide plate 4 is slidably connected to the inside of the fixed side box 3, a push rod 5 is fixedly connected to the top of the limiting slide plate 4, the push rod 5 is slidably connected to the fixed side box 3, a No. 1 spring 6 is arranged inside the fixed side box 3, one end of the No. 1 spring 6 is fixedly connected to the limiting slide plate 4, an external threaded column 28 is installed above the fixing sleeve 2, an inner side of the external threaded column 28 is slidably connected to an inserted tube body 30, two limiting top plates 29 matched with the push rod 5 are symmetrically fixedly connected to the outside of the inserted tube body 30, the limiting top plate 29 is slidably connected to the external threaded column 28, a guide wire cavity 33 is opened inside the inserted tube body 30, a guide wire tube 35 matched with the guide wire cavity 33 is fixedly connected to one side of the inserted tube body 30, and the guide wire tube 35 is connected to the guide wire cavity 33 An injection cavity 34 is provided in the tube body 30, and an injection tube 36 matching the injection cavity 34 is fixedly connected to one side of the tube body 30, and the injection tube 36 is communicated with the injection cavity 34. A guide wire body 37 is installed in the guide wire cavity 33 and the guide wire tube 35, and a No. 2 knife wire through hole 31 is provided in the tube body 30. A No. 1 knife wire through hole 13 matching the No. 2 knife wire through hole 31 is provided in the connecting sleeve 1 and the fixing sleeve 2, and a knife wire body 32 is installed in the No. 1 knife wire through hole 13 and the No. 2 knife wire through hole 31. A mounting groove 26 is provided at the bottom of the connecting sleeve 1, and a high-frequency electrode plug 14 is installed on the inner side of the mounting groove 26. One end of the knife wire body 32 is fixedly connected to the high-frequency electrode plug 14, and the knife wire body 32 is energized through the high-frequency electrode plug 14 for cutting. A guide-type nipple sphincter cutter is inserted into the nipple through the guide wire body 37, and then a liquid medicine is injected into the interior through the injection cavity 34.

[0019] Among them, the outer sides of the two fixed side boxes 3 are fixedly connected with side panels 7, the inside of the side panels 7 is fixedly connected with metal springs 8, one side of the metal springs 8 is fixedly connected with a bevel block 9 that cooperates with the limiting top plate 29, the bevel block 9 is movably connected to the side panels 7, the side of the metal springs 8 away from the bevel block 9 is fixedly connected with a pull plate 10, a movable opening 11 is opened on one side of the side panel 7, the pull plate 10 is movably connected with the movable opening 11, by pulling the pull plate 10 outward, the pull plate 10 pulls the metal spring 8 and the bevel block 9 to move their positions, and the bevel block 9 cancels the limit on the top of the limiting top plate 29.

[0020] Among them, the bottom of the high-frequency electrode plug 14 is fixedly connected to a fixing box 15, and the interior of the fixing box 15 is slidably connected to a fixing block 16. The inner side of the installation groove 26 is provided with an installation groove 17 that cooperates with the fixing block 16 to install the position of the high-frequency electrode plug 14.

[0021] The top of the fixing sleeve 2 is provided with a thread groove 27 that matches the external thread column 28 . The external thread column 28 and the extending tube body 30 are installed on the top of the fixing sleeve 2 through a threaded connection between the external thread column 28 and the thread groove 27 .

[0022] Among them, a moving plate 18 is fixedly connected to one side of the fixed block 16, and the moving plate 18 is slidably connected to the fixed box 15. A No. 2 spring 20 is provided inside the fixed box 15, and one end of the No. 2 spring 20 is fixedly connected to the moving plate 18. The moving position of the moving plate 18 and the fixed block 16 is reset by the No. 2 spring 20, and the fixed block 16 is fixed to the installation slot 17 to install the position of the fixed box 15 and install the high-frequency electrode plug 14.

[0023] Among them, a pressure plate 22 is slidably connected inside the fixed box 15, and an adjusting rod 21 is fixedly connected to one side of the pressure plate 22. An adjusting bevel groove 19 is opened inside the movable plate 18, and the adjusting rod 21 is slidably connected to the adjusting bevel groove 19. A threaded rod 23 is fixedly connected to the bottom of the pressure plate 22, and the threaded rod 23 is slidably connected to the fixed box 15. When the adjusting rod 21 moves, it presses the adjusting bevel groove 19 and drives the movable plate 18 and the block 16 to move their positions. The movable plate 18 presses the No. 2 spring 20, and the block 16 leaves the installation slot 17, so that the high-frequency electrode plug 14 and the wire body 32 can be disassembled and separated, and separated from the connecting sleeve 1.

[0024] The bottom of the threaded rod 23 is fixedly connected with a pressing plate 25 , and the threaded rod 23 is pressed by the pressing plate 25 .

[0025] The outer side of the threaded rod 23 is threadedly connected to a limiting nut 24, and the threaded rod 23 is position-limited by the limiting nut 24, thereby limiting the pressing position of the threaded rod 23 and ensuring stability.

[0026] Among them, two sliding handles 12 are symmetrically fixedly connected to the outer side of the connecting sleeve 1 to perform auxiliary position fixing processing on the connecting sleeve 1.

[0027] The outer side of the guide wire body 37 is provided with a plastic coating layer 38 , and the plastic coating layer 38 is made of polytetrafluoroethylene material, which performs a protective treatment on the outer side of the guide wire body 37 .

[0028] Specifically, when in use, the external thread column 28 and the inserted tube body 30 are installed on the top of the fixed sleeve 2 through the threaded connection between the external thread column 28 and the thread groove 27, and the limiting top plate 29 is pressed downward, and the limiting top plate 29 presses the top rod 5 and the limiting slide plate 4 to move downward, and the limiting slide plate 4 presses the first spring 6, and the limiting top plate 29 drives the inserted tube body 30 to move downward, and the limiting top plate 29 presses the bevel block 9, and the bevel block 9 drives the metal spring piece 8 to be pressed, and the metal spring piece 8 is deformed and reset and drives the bevel block 9 to move downward. The block 9 is reset, and the beveled block 9 limits the position of the top of the limiting top plate 29, thereby fixing the position of the inserted tube body 30, exposing the blade wire body 32, and energizing the blade wire body 32 through the high-frequency electrode plug 14 to perform incision processing, and inserting the guide type nipple sphincter incision knife through the guide wire body 37 to reach the nipple, and injecting the liquid medicine into the interior through the injection cavity 34. After use, when it is necessary to re-protect the blade wire body 32 by inserting the tube body 30, the pull plate 10 is pulled outward, and the pull plate 10 pulls the metal spring piece 8 and the bevel block 9 to move the position, and the bevel block 9 cancels the limit on the top of the limit top plate 29. At this time, the No. 1 spring 6 will reset and drive the limit slide plate 4 and the push rod 5 to move upward, and the push rod 5 pushes the limit top plate 29 and the insertion tube body 30 upward to protect the blade body 32. When the insertion tube body 30 is replaced, the insertion tube body 30 and the external thread column 28 are rotated, and the external thread column 28 is separated from the fixation between the thread groove 27, and the insertion tube body 30 can be disassembled. Processing, rotate the limit nut 24 to the bottom of the threaded rod 23, and press the pressing plate 25 upward. The pressing plate 25 presses the threaded rod 23 and the pressure plate 22 to move upward, and the pressure plate 22 drives the adjusting rod 21 to move. When the adjusting rod 21 moves, it presses the adjusting slot 19 and drives the moving plate 18 and the block 16 to move their positions. The moving plate 18 presses the No. 2 spring 20, and the block 16 leaves the installation slot 17. The high-frequency electrode plug 14 and the wire body 32 can be disassembled and separated, and separated from the connecting sleeve 1.

[0029] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0031] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A disposable high-frequency sphincterotomy tool, comprising a connecting sleeve (1), characterized in that: The top of the connecting sleeve (1) is fixedly connected to a fixing sleeve (2), the outer side of the fixing sleeve (2) is symmetrically fixedly connected to two fixing side boxes (3), the inside of the fixing side box (3) is slidably connected to a limiting slide plate (4), the top of the limiting slide plate (4) is fixedly connected to a push rod (5), the push rod (5) is slidably connected to the fixing side box (3), a No. 1 spring (6) is provided inside the fixing side box (3), one end of the No. 1 spring (6) is fixedly connected to the limiting slide plate (4) An external threaded column (28) is installed above the fixed sleeve (2), and an insertion tube body (30) is slidably connected to the inner side of the external threaded column (28), and two limit top plates (29) cooperating with the top rod (5) are symmetrically fixedly connected to the outer side of the insertion tube body (30), and the limit top plates (29) are slidably connected to the external threaded column (28), and a guide wire cavity (33) is opened inside the insertion tube body (30), and one side of the insertion tube body (30) is fixedly connected to a guide wire cavity (33) cooperating with the guide wire cavity (33). The guide wire tube (35) is connected to the guide wire cavity (33), the insertion tube body (30) is provided with an injection cavity (34), one side of the insertion tube body (30) is fixedly connected with an injection tube (36) that cooperates with the injection cavity (34), the injection tube (36) is connected with the injection cavity (34), a guide wire body (37) is installed inside the guide wire cavity (33) and the guide wire tube (35), and a second knife wire through hole (37) is provided inside the insertion tube body (30). 31), the connection sleeve (1) and the fixing sleeve (2) are both provided with a first blade wire through hole (13) cooperating with the second blade wire through hole (31), a blade wire body (32) is installed inside the first blade wire through hole (13) and the second blade wire through hole (31), a mounting groove (26) is provided at the bottom of the connection sleeve (1), a high-frequency electrode plug (14) is installed inside the mounting groove (26), and one end of the blade wire body (32) is fixedly connected to the high-frequency electrode plug (14).

2. The disposable high-frequency sphincterotomy knife according to claim 1, characterized in that: The outer sides of the two fixed side boxes (3) are fixedly connected to side plates (7), the inside of the side plates (7) are fixedly connected to metal springs (8), one side of the metal springs (8) is fixedly connected to a beveled edge block (9) that cooperates with a limit top plate (29), the beveled edge block (9) is movably connected to the side plates (7), the side of the metal springs (8) away from the beveled edge block (9) is fixedly connected to a pull plate (10), one side of the side plates (7) is provided with a movable opening (11), and the pull plate (10) is movably connected to the movable opening (11).

3. The disposable high-frequency sphincterotomy knife according to claim 2, characterized in that: A fixing box (15) is fixedly connected to the bottom of the high-frequency electrode plug (14), a fixing block (16) is slidably connected to the interior of the fixing box (15), and a mounting slot (17) cooperating with the fixing block (16) is provided on the inner side of the mounting slot (26).

4. The disposable high-frequency sphincterotomy knife according to claim 3, characterized in that: The top of the fixing sleeve (2) is provided with a thread groove (27) which cooperates with the external thread column (28).

5. The disposable high-frequency sphincterotomy knife according to claim 4, characterized in that: A movable plate (18) is fixedly connected to one side of the fixed block (16), and the movable plate (18) is slidably connected to the fixed box (15). A second spring (20) is provided inside the fixed box (15), and one end of the second spring (20) is fixedly connected to the movable plate (18).

6. The disposable high-frequency sphincterotomy knife according to claim 5, characterized in that: A pressing plate (22) is slidably connected inside the fixed box (15), an adjusting rod (21) is fixedly connected to one side of the pressing plate (22), an adjusting inclined groove (19) is provided inside the movable plate (18), the adjusting rod (21) is slidably connected to the adjusting inclined groove (19), a threaded rod (23) is fixedly connected to the bottom of the pressing plate (22), and the threaded rod (23) is slidably connected to the fixed box (15).

7. The disposable high-frequency sphincterotomy knife according to claim 6, characterized in that: A pressing plate (25) is fixedly connected to the bottom of the threaded rod (23).

8. The disposable high-frequency sphincterotomy knife according to claim 7, characterized in that: The outer side of the threaded rod (23) is threadedly connected to a limiting nut (24).

9. The disposable high-frequency sphincterotomy knife according to claim 8, characterized in that: Two sliding handles (12) are symmetrically and fixedly connected to the outer side of the connecting sleeve (1).

10. The disposable high-frequency sphincterotomy knife according to claim 9, characterized in that: A plastic coating layer (38) is provided on the outer side of the guide wire body (37), and the plastic coating layer (38) is made of polytetrafluoroethylene material.

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