Disposable high frequency nipple sphincter cutting knife

Abstract

The application discloses a disposable high-frequency nipple sphincter knife, which 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, a limiting sliding plate is slidably connected to the inside of the fixing side box, a top rod is fixedly connected to the top of the limiting sliding plate, and the top rod is slidably connected with the fixing side box. The beneficial effects of the application are as follows: the metal spring and the bevel clamping block are added, the position of the limiting top plate and the inserted pipe body is limited by the bevel clamping block, the inserted pipe body is stretched, the blade body is exposed outside, the cutting treatment is performed by the blade body, the limiting sliding plate and the top rod are upwardly moved by the reset of the first spring when the position of the limiting top plate is not limited by the bevel clamping block, the limiting top plate and the inserted pipe body are upwardly moved by the top rod, and the position of the blade body is stored.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of papillary sphincterotomy, in particular to a disposable high-frequency papillary sphincterotomy knife. BACKGROUND

[0002] The application of the incision knife in therapeutic ERCP mainly has two points: 1, dilate the duodenal papillary sphincter to assist the doctor in inserting the catheter into the duodenal papilla under the guidance of the guide wire, at this point, the incision knife assists the intubation mainly in the "arch" and "toughness" of the incision knife, and if a rotatable papillary incision knife is provided, it has the control ability of "up, down, left and right" and can "show great skill" when assisting the guide wire intubation; 2, cut the duodenal papillary sphincter to expand its opening to meet the subsequent treatment needs such as removing common bile duct stones, at this point, the incision knife is mainly used to cut the intramural segment of the Oddi sphincter in the duodenal wall, so the length and size of the incision are appropriate to not perforate and meet the subsequent treatment such as stone removal, the incision knife is a necessary instrument in EST surgery, the incision knife is divided into a pull-type arch-shaped incision knife and a needle-shaped incision knife, the pull-type arch-shaped incision knife is currently the most widely used, and most patients who need to undergo EST can be completed by using the pull-type arch-shaped incision knife, but the existing disposable high-frequency papillary sphincterotomy knife is not convenient to disassemble and replace, the disposable incision knife is not convenient to separate when installing the electrode plug, and the knife wire that needs to be extended inside is not convenient to extend, adjust and process, the overall structure is disposable, which wastes the use of a large amount of materials and causes unnecessary waste of the incision knife as a whole. SUMMARY

[0003] The present application relates to the technical field of papillary sphincterotomy, in particular to a disposable high-frequency papillary sphincterotomy knife.

[0004] In order to achieve the above object, the present application provides the following technical scheme: the disposable high-frequency nipple sphincter knife comprises a connecting sleeve, a fixed sleeve is fixedly connected to the top of the connecting sleeve, two fixed side boxes are fixedly connected to the outer side of the fixed sleeve in a symmetrical manner, a limiting sliding plate is slidably connected to the inside of the fixed side box, a top rod is fixedly connected to the top of the limiting sliding plate, the top rod is slidably connected with the fixed side box, a No. 1 spring is arranged in the fixed side box, one end of the No. 1 spring is fixedly connected with the limiting sliding plate, an external thread column is arranged above the fixed sleeve, an extension tube is slidably connected to the inner side of the external thread column, two limiting top plates matched with the top rod are fixedly connected to the outer side of the extension tube in a symmetrical manner, the limiting top plates are slidably connected with the external thread column, a guide wire cavity is arranged in the inside of the extension tube, a guide wire tube matched with the guide wire cavity is fixedly connected to one side of the extension tube, the guide wire tube is in communication with the guide wire cavity, an injection cavity is arranged in the inside of the extension tube, an injection tube matched with the injection cavity is fixedly connected to one side of the extension tube, the injection tube is in communication with the injection cavity, a guide wire body is arranged in the inside of the guide wire cavity and the guide wire tube, a No. 2 knife wire through hole is arranged in the inside of the extension tube, a No. 1 knife wire through hole matched with the No. 2 knife wire through hole is arranged in the inside of the connecting sleeve and the fixed sleeve, a knife wire body is arranged in the inside of the No. 1 knife wire through hole and the No. 2 knife wire through hole, an installation groove is arranged in the bottom of the connecting sleeve, a high-frequency electrode plug is arranged in the inner side of the installation groove, one end of the knife wire body is fixedly connected with the high-frequency electrode plug.

[0005] As a preferred scheme of the present application: the outer side of each of the two fixed side boxes is fixedly connected with a side plate, a metal spring plate is fixedly connected to the inside of the side plate, an oblique edge clamping block matched with the limiting top plate is fixedly connected to one side of the metal spring plate, the oblique edge clamping block is movably connected with the side plate, a pull plate is fixedly connected to the side of the metal spring plate away from the oblique edge clamping block, and a movable opening is arranged in one side of the side plate, the pull plate is movably connected with the movable opening.

[0006] As a preferred scheme of the present application: the bottom of the high-frequency electrode plug is fixedly connected with a fixed box, a fixed clamping block is slidably connected to the inside of the fixed box, and a mounting clamping groove matched with the fixed clamping block is arranged in the inner side of the installation groove.

[0007] As a preferred scheme of the present application: the top of the fixed sleeve is provided with a thread groove matched with the external thread column.

[0008] As a preferred scheme of the present application: one side of the fixed clamping block is fixedly connected with a moving plate, the moving plate is slidably connected with the fixed box, a No. 2 spring is arranged in the inside of the fixed box, and one end of the No. 2 spring is fixedly connected with the moving plate.

[0009] As a preferred scheme of the present application: the inside of the fixed box is slidably connected with a pressing plate, one side of the pressing plate is fixedly connected with an adjusting rod, the inside of the moving plate is provided with an adjusting inclined groove, the adjusting rod is slidably connected with the adjusting inclined groove, the bottom of the pressing plate is fixedly connected with a threaded rod, and the threaded rod is slidably connected with the fixed box.

[0010] As a preferred scheme of the present application: the bottom of the threaded rod is fixedly connected with a pressing plate.

[0011] As a preferred scheme of the present application: the outside of the threaded rod is threadedly connected with a limiting nut.

[0012] As a preferred scheme of the present application: the outside of the connecting sleeve is symmetrically fixedly connected with two sliding handles.

[0013] As a preferred scheme of the present application: the outside of the guide wire body is provided with a plastic coating, and the plastic coating is made of polytetrafluoroethylene material.

[0014] Compared with the prior art, the present application has the beneficial effects that: by adding the metal elastic sheet and the beveled edge clamping block, the position of the limiting top plate and the pipe body extending into is limited by the beveled edge clamping block, so that the pipe body extending into is stretched, the guide wire body is exposed outside, and the cutting treatment is performed by the guide wire body; by adding the limiting sliding plate and the jacking rod, when the position of the limiting top plate is not limited by the beveled edge clamping block, the limiting sliding plate and the jacking rod are moved upward by the reset of the first spring, the jacking rod jacks the limiting top plate and the pipe body extending into to move upward, and the position of the guide wire body is stored; by adding the clamping block and the mounting clamping groove, the clamping block and the mounting clamping groove are mounted and fixed, the fixed box and the high-frequency electrode plug are mounted and fixed in the mounting groove, the position of the guide wire body is mounted and fixed, and the high-frequency electrode plug and the guide wire body can be conveniently disassembled. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is an internal structure schematic view of the present application;

[0016] Figure 2 It is an internal structure schematic view of the present application; Figure 1 It is an enlarged view of A in the present application;

[0017] Figure 3 It is an enlarged view of B in the present application; Figure 1 It is an enlarged view of B in the present application;

[0018] Figure 4 It is a guide wire body structure schematic view of the present application.

[0019] In the figure: 1, connecting sleeve; 2, fixed sleeve; 3, fixed side box; 4, limiting sliding plate; 5, ejector pin; 6, No. 1 spring; 7, side plate; 8, metal spring piece; 9, bevel clamping block; 10, pull plate; 11, movable mouth; 12, sliding handle; 13, No. 1 wire pass hole; 14, high-frequency electrode plug; 15, fixed box; 16, fixed clamping block; 17, mounting clamping groove; 18, moving plate; 19, adjusting inclined groove; 20, No. 2 spring; 21, adjusting rod; 22, pressing plate; 23, threaded rod; 24, limiting nut; 25, pressing plate; 26, mounting groove; 27, threaded groove; 28, external thread column; 29, limiting top plate; 30, extending into the pipe body; 31, No. 2 wire pass hole; 32, wire body; 33, wire guide cavity; 34, injection cavity; 35, wire guide pipe; 36, injection pipe; 37, wire guide body; 38, plastic coating. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0021] Please refer to Figures 1 to 4The application provides a technical scheme: the disposable high-frequency nipple sphincter incision knife, which comprises 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 fixedly connected to the outer sides of the fixed sleeve 2 in a symmetrical mode, a limiting sliding plate 4 is slidably connected to the inside of the fixed side box 3, a top rod 5 is fixedly connected to the top of the limiting sliding plate 4, the top rod 5 is slidably connected with the fixed side box 3, a first spring 6 is arranged in the fixed side box 3, one end of the first spring 6 is fixedly connected with the limiting sliding plate 4, an external thread column 28 is arranged above the fixed sleeve 2, an extension pipe body 30 is slidably connected to the inner side of the external thread column 28, two limiting top plates 29 matched with the top rod 5 are fixedly connected to the outer sides of the extension pipe body 30 in a symmetrical mode, the limiting top plates 29 are slidably connected with the external thread column 28, a guide wire cavity 33 is arranged in the inside of the extension pipe body 30, a guide wire pipe 35 matched with the guide wire cavity 33 is fixedly connected to one side of the extension pipe body 30, the guide wire pipe 35 is communicated with the guide wire cavity 33, an injection cavity 34 is arranged in the inside of the extension pipe body 30, an injection pipe 36 matched with the injection cavity 34 is fixedly connected to one side of the extension pipe body 30, the injection pipe 36 is communicated with the injection cavity 34, a guide wire body 37 is arranged in the inside of the guide wire cavity 33 and the guide wire pipe 35, a second knife wire through hole 31 is arranged in the inside of the extension pipe body 30, a first knife wire through hole 13 matched with the second knife wire through hole 31 is arranged in the inside of the connecting sleeve 1 and the fixed sleeve 2, a knife wire body 32 is arranged in the inside of the first knife wire through hole 13 and the second knife wire through hole 31, an installation groove 26 is arranged at the bottom of the connecting sleeve 1, a high-frequency electrode plug 14 is arranged at the inner side of the installation groove 26, one end of the knife wire body 32 is fixedly connected with the high-frequency electrode plug 14, the knife wire body 32 is electrified through the high-frequency electrode plug 14, incision treatment is carried out, the guide wire body 37 is arranged in the nipple sphincter incision knife to the nipple part, and the inside is injected with liquid medicine through the injection cavity 34.

[0022] The outer sides of the two fixed side boxes 3 are fixedly connected with side plates 7, the inside of the side plate 7 is fixedly connected with metal spring plates 8, one side of the metal spring plate 8 is fixedly connected with an oblique edge clamping block 9 matched with the limiting top plate 29, the oblique edge clamping block 9 is movably connected with the side plate 7, one side of the metal spring plate 8 away from the oblique edge clamping block 9 is fixedly connected with a pull plate 10, one side of the side plate 7 is provided with a movable opening 11, the pull plate 10 is movably connected with the movable opening 11, the pull plate 10 pulls the metal spring plate 8 and the oblique edge clamping block 9 to move in position by pulling outward, and the oblique edge clamping block 9 cancels the limiting of the top of the limiting top plate 29.

[0023] The bottom of the high-frequency electrode plug 14 is fixedly connected with a fixed box 15, the inside of the fixed box 15 is slidably connected with a fixed clamping block 16, the inner side of the installation groove 26 is provided with an installation clamping groove 17 matched with the fixed clamping block 16, and the position of the high-frequency electrode plug 14 is installed.

[0024] The top of the fixed sleeve 2 is provided with a threaded groove 27 matched with the external threaded column 28, the external threaded column 28 and the pipe body 30 are installed at the top of the fixed sleeve 2 through the threaded connection between the external threaded column 28 and the threaded groove 27.

[0025] The side of the fixed clamping block 16 is fixedly connected with a moving plate 18, the moving plate 18 is slidably connected with the fixed box 15, the inside of the fixed box 15 is provided with a second spring 20, one end of the second spring 20 is fixedly connected with the moving plate 18, the moving position of the moving plate 18 and the fixed clamping block 16 is reset through the second spring 20, the position of the fixed box 15 is installed through the fixing between the fixed clamping block 16 and the installation clamping groove 17, and the high-frequency electrode plug 14 is installed.

[0026] The inside of the fixed box 15 is slidably connected with a pressing plate 22, the side of the pressing plate 22 is fixedly connected with an adjusting rod 21, the inside of the moving plate 18 is provided with an adjusting inclined groove 19, the adjusting rod 21 is slidably connected with the adjusting inclined groove 19, the bottom of the pressing plate 22 is fixedly connected with a threaded rod 23, the threaded rod 23 is slidably connected with the fixed box 15, the adjusting rod 21 moves to press the adjusting inclined groove 19 and drive the moving plate 18 and the clamping block 16 to move, the moving plate 18 presses the second spring 20, the clamping block 16 leaves the installation clamping groove 17, and the high-frequency electrode plug 14 and the knife wire body 32 can be separated and disassembled, and the connection sleeve 1 is separated.

[0027] The bottom of the threaded rod 23 is fixedly connected with a pressing plate 25, and the threaded rod 23 is pressed through the pressing plate 25.

[0028] The outer side of the threaded rod 23 is threadedly connected with a limiting nut 24, the position of the threaded rod 23 is limited through the limiting nut 24, the pressing position of the threaded rod 23 is limited, and the stability is guaranteed.

[0029] The outside of the connection sleeve 1 is symmetrically fixedly connected with two slide handles 12, and the position of the connection sleeve 1 is assisted and fixed.

[0030] The outside of the guide wire body 37 is provided with a plastic layer 38, the plastic layer 38 is made of polytetrafluoroethylene material, and the outside of the guide wire body 37 is protected.

[0031] Specifically, in use, the outer threaded column 28 and the extension tube 30 are installed at the top of the fixing sleeve 2 by the threaded connection between the outer threaded column 28 and the threaded groove 27, the limiting top plate 29 is pressed downward, the top rod 5 and the limiting sliding plate 4 are moved downward, the limiting sliding plate 4 presses the first spring 6, the limiting top plate 29 drives the extension tube 30 to move downward, the limiting top plate 29 presses the beveled edge clamping block 9, the beveled edge clamping block 9 drives the metal spring piece 8 to be pressed, the metal spring piece 8 resets and drives the beveled edge clamping block 9 to reset, the beveled edge clamping block 9 limits the position of the top of the limiting top plate 29, thereby fixing the position of the extension tube 30, exposing the blade wire body 32, the blade wire body 32 is electrified by the high-frequency electrode plug 14, cutting treatment is performed, the guide wire body 37 is inserted into the guiding type nipple sphincter cutter to the nipple part, the inside is injected with liquid medicine through the injection cavity 34, after use, the blade wire body 32 needs to be protected again by the extension tube 30, the pull plate 10 is pulled outward, the metal spring piece 8 and the beveled edge clamping block 9 are moved in position, the beveled edge clamping block 9 cancels the limiting of the top of the limiting top plate 29, at this time the first spring 6 resets and drives the limiting sliding plate 4 and the top rod 5 to move upward, the top rod 5 upwardly drives the limiting top plate 29 and the extension tube 30 to move upward, the blade wire body 32 is protected, when the extension tube 30 is replaced, the extension tube 30 and the outer threaded column 28 are rotated, the outer threaded column 28 is separated from the fixing between the threaded groove 27, the extension tube 30 can be disassembled, the limiting nut 24 is rotated to the bottom of the threaded rod 23, the press plate 25 is pressed upward, the threaded rod 23 and the pressing plate 22 are moved upward, the pressing plate 22 drives the adjusting rod 21 to move, the adjusting rod 21 moves and presses the adjusting inclined groove 19 and drives the moving plate 18 and the clamping block 16 to move in position, the moving plate 18 presses the second spring 20, the clamping block 16 leaves the installation clamping groove 17, the high-frequency electrode plug 14 and the blade wire body 32 can be disassembled and separated, and the connection sleeve 1 is separated.

[0032] In the description of the present application, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "central", "both ends" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0033] In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purpose and are not to be construed as indicating or implying relative importance or a specific number of the technical features indicated thereby, thus the features with "first", "second", "third", "fourth" can include at least one of the features explicitly or implicitly.

[0034] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting", "fixing", "screwing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly limited, the above terms in the present application can be understood according to the specific meaning of the above terms in the present application by those skilled in the art.

[0035] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A disposable high-frequency papillary sphincterotomy knife, 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 fixed side boxes (3), the interior of the fixed side box (3) is slidably connected to a limiting slide (4), the top of the limiting slide (4) is fixedly connected to a push rod (5), the push rod (5) is slidably connected to the fixed side box (3), a No. 1 spring (6) is provided inside the fixed side box (3), one end of the No. 1 spring (6) is fixedly connected to the limiting slide (4), an external threaded column (28) is installed above the fixing sleeve (2), the inner side of the external threaded column (28) is slidably connected to an insert tube (30), and the outer side of the insert tube (30) is symmetrically fixedly connected to two push rods (5) that cooperate with the push rod (5). A limiting top plate (29) is slidably connected to the external threaded column (28); a guide wire cavity (33) is provided inside the inserted tube body (30); a guide wire tube (35) that cooperates with the guide wire cavity (33) is fixedly connected to one side of the inserted tube body (30); the guide wire tube (35) is communicated with the guide wire cavity (33); an injection cavity (34) is provided inside the inserted tube body (30); an injection tube (36) that cooperates with the injection cavity (34) is fixedly connected to one side of the inserted tube body (30); the injection tube (36) is communicated with the injection cavity (34); a guide wire body (37) is installed inside the guide wire cavity (33) and the guide wire tube (35); a No. 2 knife wire passage is provided inside the inserted tube body (30); The connecting sleeve (1) and the fixing sleeve (2) are both provided with a first blade wire through hole (13) matched with the second blade wire through hole (31), and a blade wire body (32) is installed inside the first blade wire through hole (13) and the second blade wire through hole (31). The bottom of the connecting sleeve (1) is provided with a mounting groove (26), and a high-frequency electrode plug (14) is installed inside the mounting groove (26). One end of the blade wire body (32) is fixedly connected to the high-frequency electrode plug (14), and the bottom of the high-frequency electrode plug (14) is fixedly connected to a fixing box (15), and a fixed block (16) is slidably connected to the inside of the fixing box (15). The inner side of the mounting groove (26) is provided with a fixing block (16) matched with the fixing block (16). The fixing block (16) is fixedly connected to a movable plate (18) on one side, 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). 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 inclined groove (19) is provided inside the movable plate (18), and 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 pressure plate (22), and the threaded rod (23) is slidably connected to the fixed box (15).The bottom of the threaded rod (23) is fixedly connected to a pressing plate (25).

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 panels (7), the inside of the side panels (7) is fixedly connected to a metal spring (8), one side of the metal spring (8) is fixedly connected to a bevel block (9) that cooperates with the limit top plate (29), the bevel block (9) is movably connected to the side panels (7), the side of the metal spring (8) away from the bevel block (9) is fixedly connected to a pull plate (10), a movable opening (11) is opened on one side of the side panel (7), 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: The top of the fixing sleeve (2) is provided with a thread groove (27) that cooperates with the external thread column (28).

4. The disposable high-frequency sphincterotomy device according to claim 3, characterized in that: The outer side of the threaded rod (23) is threadedly connected to a limiting nut (24).

5. The disposable high-frequency sphincterotomy knife according to claim 4, characterized in that: Two sliding handles (12) are symmetrically and fixedly connected to the outer side of the connecting sleeve (1).

6. The disposable high-frequency sphincterotomy device according to claim 5, 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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