Visual biliary tract expansion kit

Abstract

The invention relates to the technical field of choledochoscopes, in particular to a visual biliary tract expansion kit. The guide wire sequentially penetrates through the first guide hole and the second guide hole, the guide wire extends out and then extends into the body of a patient, then the sheathing canal extends into the body of the patient along the guide wire, and in the process, the guide wire plays a positioning role to prevent the sheathing canal from moving disorderly in the process of entering the body of the patient; when the main body of the sheathing canal enters the body of a patient, the expanding tube can be inserted into the interventional channel from the first end, and the sheathing canal is the flexible tube body, so that the expanding tube with a smaller diameter can be inserted into the interventional channel, then the expanding tube is pulled out, and then the expanding tube with a larger diameter is inserted into the interventional channel, so that the diameter of the interventional channel is slowly expanded; according to the biliary tract calculus removing device, the body of a patient has a gradual adaptation process, the body of the patient can be prevented from being injured due to the fact that a large expanding tube is directly used at the beginning, it can be guaranteed that the large expanding tube is used for guaranteeing a better operation space, and therefore calculus removing operation can be conveniently conducted on the biliary tract.

Description

Technical Field

[0001] The invention relates to the technical field of choledochoscopes, and in particular to a visualized biliary dilation kit. Background Art

[0002] The existing biliary stone removal kit includes a sheath tube; the sheath tube is provided with an intervention channel and a guidewire hole body into which the lithotripsy can be inserted, and the guidewire hole is penetrated with a guidewire running axially, and the guidewire is used to locate and prevent the sheath tube from shifting; however, the existing sheath tube cannot expand in diameter after being inserted into the human body, and is not convenient for inserting lithotripsy and cholecystoscopic tubes of different sizes; therefore, there is an urgent need for a biliary stone removal kit that can expand the diameter of the intervention channel. Summary of the invention

[0003] The main purpose of the present invention is to provide a visualized biliary dilation kit, aiming to solve the problem that a biliary stone removal kit capable of expanding the diameter of an interventional channel is currently urgently needed.

[0004] To achieve the above purpose, the technical solution proposed by the present invention is:

[0005] A visualized biliary dilatation kit, comprising a sheath, a guide wire, a dilator and a connecting assembly; the sheath comprises a main body and a secondary body obliquely connected to the main body; the main body comprises a first end and a second end; the secondary body comprises a third end away from the main body; the main body is provided with an intervention channel, and the intervention channel respectively passes through the first end and the second end; the secondary body is provided with a first guide hole; the main body is provided with a second guide hole; the second guide hole is connected to the first guide hole; one end of the first guide hole passes through the third end; one end of the second guide hole passes through the second end; the guide wire is used to pass through the first guide hole and the second guide hole in sequence; the expansion tube is used to pass through the intervention channel; the sheath is a flexible sheath, and the intervention channel can be expanded by the expansion tube; the number of expansion tubes is multiple; different expansion tubes have different diameters; an annular baffle is provided at one end of the expansion tube; the first and second convex plates are respectively connected to the two sides of the annular baffle; the sheath is formed with a support baffle at the first end; the connecting component is provided on the support baffle to fix the first and second convex plates so that the annular baffle fits against the support baffle.

[0006] Preferably, the connecting assembly includes a connecting rod and a first baffle; the connecting rod is vertically connected to the side of the supporting baffle facing away from the main body; the first baffle is connected to the connecting rod; the first baffle is parallel to the supporting baffle; the distance between the first baffle and the supporting baffle is a preset value; the thickness of the first convex plate is the preset value; when the annular baffle is abutted against the supporting baffle, the annular baffle can be rotated until the first convex plate is embedded between the first baffle and the supporting baffle, and at this time, one side of the first convex plate is abutted against the first baffle, and the other side of the first convex plate is abutted against the supporting baffle to fix the first convex plate.

[0007] Preferably, the connecting assembly also includes a support block and a pressure plate; the second protrusion plate and the first protrusion plate are symmetrically arranged with respect to the center of the annular baffle; the shape of the second protrusion plate is consistent with the shape of the first protrusion plate, and the thickness of the second protrusion plate is the preset value; the support block and the pressure plate are arranged on the side of the support baffle away from the connecting rod; the support block includes a support surface, and the support surface is flush with the side surface of the support baffle facing away from the main pipe body; when the annular baffle is in contact with the support baffle, the annular baffle can be rotated until the second protrusion is embedded between the support block and the pressure plate; the pressure plate can be in contact with one side of the second protrusion plate so that the second protrusion is in contact with the support surface to fix the second protrusion plate.

[0008] Preferably, the connecting assembly also includes a first driving component; a notch is provided on the side of the support baffle away from the connecting rod; a sliding rod is connected to the notch, and the sliding rod is parallel to the support baffle; the sliding rod is parallel to the supporting surface; a first through hole is provided through the support block; the sliding rod slides through the first through hole; the cross-section of the sliding rod is rectangular, and the cross-section of the first through hole is rectangular; the pressure plate is movably connected to the support block; the pressure plate is parallel to the supporting surface, and the pressure plate is on the side of the support block away from the main body; the first driving component is used to drive the pressure plate to approach or move away from the support block.

[0009] Preferably, the connecting assembly also includes a spring, a second baffle and a second driving component; the second baffle is vertically connected to the sliding rod; the support block is between the second baffle and the main pipe body; the spring is sleeved on the sliding rod; one end of the spring is connected to the support block, and the other end of the spring is connected to the second baffle, and the spring is always in a compressed state; the elastic force of the spring makes the support block tend to approach the main pipe body; the second driving component is used to drive the support block away from the main pipe body.

[0010] Preferably, the second driving component includes an adjusting rotating tube, a supporting tube and a cam; the supporting tube is connected to a side of the supporting baffle close to the main body; the supporting tube and the main body share a central axis; the adjusting rotating tube is rotatably sleeved on the supporting tube; the adjusting rotating tube and the supporting tube share a central axis; the cam is coaxially sleeved on the outer wall of the adjusting rotating tube; the outer wall of the cam abuts against a side of the supporting block close to the main body; the outer wall of the adjusting rotating tube is provided with anti-slip textures.

[0011] Preferably, the connecting assembly also includes a first lifting rod, a first sleeve and a first rotating tube; the first lifting rod is vertically connected to one end of one side of the pressure plate; the support block is provided with a second through hole; the central axis of the second through hole is perpendicular to the support surface; the first lifting rod is passed through the second through hole, and the inner diameter of the second through hole is larger than the outer diameter of the first lifting rod; the first sleeve is connected to the side of the support block away from the pressure plate; the first sleeve and the second through hole share a central axis; the first rotating tube is rotatably embedded in the first sleeve, and the first rotating tube and the first sleeve share a central axis; a first internal thread is provided inside the first rotating tube; the inner diameter of the first rotating tube is smaller than the inner diameter of the second through hole; the outer wall of the first lifting rod is provided with a first external thread matching the first internal thread; the first lifting rod is screwed on the first rotating tube.

[0012] Preferably, the connecting assembly also includes a second lifting rod, a second sleeve and a second rotating tube; the second lifting rod is vertically connected to the other end of one side of the pressure plate; the support block is provided with a third through hole; the central axis of the third through hole is perpendicular to the support surface; the second through hole and the third through hole are symmetrical about the center of the support block; the second lifting rod is passed through the third through hole, and the inner diameter of the third through hole is larger than the outer diameter of the second lifting rod; the second sleeve is connected to the side of the support block away from the pressure plate; the second sleeve and the third through hole share a central axis; the second rotating tube is rotatably embedded in the second sleeve, and the second rotating tube and the second sleeve share a central axis; a second internal thread is provided inside the second rotating tube; the inner diameter of the second rotating tube is smaller than the inner diameter of the third through hole; the outer wall of the second lifting rod is provided with a second external thread matching the second internal thread; the second lifting rod is screwed on the second rotating tube.

[0013] Preferably, the connecting assembly also includes a first gear, a second gear, a third gear, a rotating rod and a rotating handle; the first gear is coaxially sleeved on the first rotating tube; the second gear is coaxially sleeved on the second rotating tube; the diameters of the first rotating tube and the second rotating tube are consistent; the sizes of the first gear and the second gear are consistent; the rotating rod is rotatably connected to the side of the support block away from the pressure plate; the third gear is coaxially sleeved on the rotating rod; the first gear and the second gear are both meshed with the third gear; the first gear and the second gear are symmetrical with the rotating rod; the end of the rotating rod away from the support block is connected with a rotating handle.

[0014] Preferably, the connecting assembly also includes a protective cover; the protective cover is arranged on the supporting block; the first sleeve, the second sleeve, the first rotating tube, the second rotating tube, the first gear, the second gear and the third gear are all arranged in the protective cover; the rotating rod extends out of the protective cover, and the rotating handle is outside the protective cover; the first sleeve and the second sleeve have the same size; the first lifting rod and the second lifting rod have the same size; the inner diameter of the second through hole and the third through hole is consistent.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] This visualized biliary dilation kit can expand the diameter of the interventional channel when used; when used specifically, first pass the guide wire through the first guide hole and the second guide hole in turn, and extend the guide wire and then extend it into the patient's body, and then extend the sheath tube into the patient's body along the guide wire. During this process, the guide wire plays a positioning role to prevent the sheath tube from running around in the process of entering the patient's body; when the main body of the sheath tube enters the patient's body, the expansion tube can be inserted into the interventional channel from the first end. Because the sheath tube is a flexible tube body, a smaller diameter expansion tube can be used to insert the interventional channel first, and then the expansion tube can be pulled out, and then a larger diameter expansion tube can be used to insert the interventional channel, thereby slowly expanding the diameter of the interventional channel, allowing the patient's body to have a gradual adaptation process, which can prevent the patient's body from being damaged by directly using a larger expansion tube at the beginning, and can also ensure that a larger expansion tube is used to ensure a better surgical space, thereby facilitating stone removal operations in the bile duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1This is a schematic structural diagram of an embodiment of a visualized biliary dilation kit proposed by the present invention;

[0019] Figure 2 for Figure 1 A magnified schematic diagram of the details in the middle;

[0020] Figure 3 A schematic side view of the local structure of an embodiment of a visualized biliary dilation kit provided by the present invention;

[0021] Figure 4 A schematic top view of the local structure of an embodiment of a visualized biliary dilation kit proposed by the present invention (1);

[0022] Figure 5 This is a schematic top view of the local structure of an embodiment of the visualized biliary dilation kit proposed by the present invention (2).

[0023] Description of reference numerals:

[0024] 110, main body; 120, auxiliary body; 130, first end; 140, second end; 150, third end; 160, intervention channel; 170, first guide hole; 180, second guide hole; 190, support baffle; 210, expansion tube; 220, annular baffle; 230, first convex plate; 240, second convex plate; 250, connecting rod; 260, first baffle; 270, support block; 280, pressure plate; 290, support tube; 310, adjustment rotating tube; 320, cam; 33 0, protective cover; 340, rotating handle; 350, second baffle; 360, spring; 370, sliding rod; 380, rotating rod; 390, second lifting rod; 410, supporting surface; 420, first lifting rod; 430, first through hole; 440, second through hole; 450, third through hole; 460, first sleeve; 470, second sleeve; 480, first rotating tube; 490, second rotating tube; 510, first gear; 520, second gear; 530, third gear; 540, notch.

[0025] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] 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.

[0027] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0031] The invention provides a visualized biliary dilation kit.

[0032] As attached Figure 1 -Attached Figure 5As shown, in one embodiment of a visualized biliary dilatation kit proposed by the present invention, the visualized biliary dilatation kit includes a sheath, a guide wire (not shown), a dilator 210 and a connecting assembly; the sheath includes a main body 110, and a secondary body 120 obliquely connected to the main body 110; the main body 110 includes a first end 130 and a second end 140; the secondary body 120 includes a third end 150 away from the main body 110; the main body 110 is provided with an intervention channel 160, and the intervention channel 160 passes through the first end 130 and the second end 140 respectively; the secondary body 120 is provided with a first guide hole 170; the main body 110 is provided with a second guide hole 180; the second guide hole 180 is connected to the first guide hole 170; one end of the first guide hole 170 is provided with a The third end 150 is passed through; one end of the second guide hole 180 passes through the second end 140; the guide wire is used to be sequentially passed through the first guide hole 170 and the second guide hole 180; the expansion tube 210 is used to be passed through the intervention channel 160; the sheath is a flexible sheath, and the intervention channel 160 can be expanded by the expansion tube 210; there are multiple expansion tubes 210; different expansion tubes 210 have different diameters; an annular baffle 220 is provided at one end of the expansion tube 210; the first convex plate 230 and the second convex plate 240 are respectively connected to the two sides of the annular baffle 220; the sheath is formed with a support baffle 190 at the first end 130; the connecting component is provided on the support baffle 190, so as to fix the first convex plate 230 and the second convex plate 240, so that the annular baffle 220 fits against the support baffle 190.

[0033] The visualized biliary dilation kit can expand the diameter of the interventional channel 160 when in use. When in use, the guide wire is first passed through the first guide hole 170 and the second guide hole 180 in sequence, and the guide wire is extended and then inserted into the patient's body, and then the sheath is extended into the patient's body along the guide wire. In this process, the guide wire plays a positioning role to prevent the sheath from running around in the process of entering the patient's body. When the main body of the sheath enters the patient's body, the expansion tube 210 can be inserted from the first end 130 into the interventional channel 160, and then the expansion tube 210 is fixed by the connecting component; subsequently, the choledochoscope or lithotripter can be inserted into the patient's body. Because the sheath is a flexible tube, the expansion tube 210 with a smaller diameter can be used to insert into the intervention channel 160, and then the expansion tube 210 can be withdrawn, and then the expansion tube 210 with a larger diameter can be used to insert into the intervention channel 160, thereby slowly expanding the diameter of the intervention channel 160, allowing the patient's body to have a gradual adaptation process, which can prevent the patient's body from being damaged by directly using a larger expansion tube 210 at the beginning, and can also ensure that the larger expansion tube 210 is used to ensure a better surgical space, thereby facilitating the stone removal operation on the bile duct.

[0034] In addition, the connecting assembly includes a connecting rod 250 and a first baffle 260; the connecting rod 250 is vertically connected to the side of the support baffle 190 that is away from the main body 110; the first baffle 260 is connected to the connecting rod 250; the first baffle 260 is parallel to the support baffle 190; the distance between the first baffle 260 and the support baffle 190 is a preset value; the thickness of the first protrusion 230 is a preset value (for example, 2 mm); when the annular baffle 220 is in contact with the support baffle 190, the annular baffle 220 can be rotated until the first protrusion 230 is embedded between the first baffle 260 and the support baffle 190, and at this time, one side of the first protrusion 230 is in contact with the first baffle 260, and the other side of the first protrusion 230 is in contact with the support baffle 190 to fix the first protrusion 230.

[0035] At the same time, the connecting assembly also includes a support block 270 and a pressure plate 280; the second convex plate 240 and the first convex plate 230 are symmetrically arranged with respect to the center of the annular baffle 220; the shape of the second convex plate 240 is consistent with the shape of the first convex plate 230, and the thickness of the second convex plate 240 is a preset value; the support block 270 and the pressure plate 280 are arranged on the side of the support baffle 190 away from the connecting rod 250; the support block 270 includes a support surface 410, and the support surface 410 is flush with a side of the support baffle 190 away from the main pipe body 110; when the annular baffle 220 is in contact with the support baffle 190, the annular baffle 220 can be rotated until the second convex plate 240 is embedded between the support block 270 and the pressure plate 280; the pressure plate 280 can be in contact with one side of the second convex plate 240 so that the second convex plate 240 is in contact with the support surface 410 to fix the second convex plate 240. The entire expansion pipe 210 is fixed by fixing the first protruding plate 230 and the second protruding plate 240 .

[0036] In addition, the connecting assembly further comprises a first driving component; a notch 540 is provided on the side of the support baffle 190 away from the connecting rod 250; a sliding rod 370 is connected to the notch 540, and the sliding rod 370 is parallel to the support baffle 190; the sliding rod 370 is parallel to the support surface 410; a first through hole 430 is provided through the support block 270; the sliding rod 370 is slidably arranged in the first through hole 430; the cross section of the sliding rod 370 is rectangular, and the cross section of the first through hole 430 is rectangular; the pressing plate 280 is movably connected to the support block 270; the pressing plate 280 is parallel to the support surface 410, and the pressing plate 280 is on the side of the support block 270 away from the main body 110; the first driving component is used to drive the pressing plate 280 to approach or move away from the support block 270. By setting the first driving component, the pressing plate 280 can be driven to approach or move away from the support block 270, thereby achieving the compression or release of the second convex plate 240.

[0037] At the same time, the connecting assembly also includes a spring 360, a second baffle 350 and a second driving component; the second baffle 350 is vertically connected to the slide rod 370; the support block 270 is between the second baffle 350 and the main body 110; the spring 360 is sleeved on the slide rod 370; one end of the spring 360 is connected to the support block 270, and the other end of the spring 360 is connected to the second baffle 350, and the spring 360 is always in a compressed state; the elastic force of the spring 360 makes the support block 270 tend to approach the main body 110; the second driving component is used to drive the support block 270 away from the main body 110.

[0038] Specifically, the second driving component includes an adjusting rotating tube 310, a support tube 290 and a cam 320; the support tube 290 is connected to the side of the support baffle 190 close to the main body 110; the support tube 290 and the main body 110 share a central axis; the adjusting rotating tube 310 is rotatably sleeved on the support tube 290; the adjusting rotating tube 310 and the support tube 290 share a central axis; the cam 320 is coaxially sleeved on the outer wall of the adjusting rotating tube 310; the outer wall of the cam 320 abuts against the side of the support block 270 close to the main body 110; the outer wall of the adjusting rotating tube 310 is provided with anti-slip texture.

[0039] Through the above technical solution, the position of the support block 270 can be adjusted, so that the second convex plate 240 can be inserted between the pressure plate 280 and the support surface 410; when the expansion tube 210 needs to be fixed, the annular baffle 220 is firstly abutted against the support baffle 190 (such as the attached Figure 5 As shown); then, the adjusting rotating tube 310 is manually rotated so that the convex point position of the cam 320 abuts the support block 270, thereby driving the support block 270 to move in a direction close to the second baffle 350. During this process, the annular baffle 220 is manually rotated so that the first convex plate 230 is embedded under the first baffle 260, and the second convex plate 240 is aligned with the pressure plate 280 and the support block 270. Then, the adjusting rotating tube 310 is manually released, and the support block 270 moves again in a direction close to the main body 110 under the action of the spring 360, so that the second convex plate 240 extends between the support block 270 and the pressure plate 280, and then the first driving component is used to drive the pressure plate 280 to move in a direction close to the second convex plate 240, and finally the pressure plate 280 abuts against the second convex plate 240, and the second convex plate 240 abuts against the support surface 410.

[0040] In addition, the connecting assembly also includes a first lifting rod 420, a first sleeve 460 and a first rotating tube 480; the first lifting rod 420 is vertically connected to one end of one side of the pressing plate 280; the support block 270 is provided with a second through hole 440; the central axis of the second through hole 440 is perpendicular to the supporting surface 410; the first lifting rod 420 is passed through the second through hole 440, and the inner diameter of the second through hole 440 is larger than the outer diameter of the first lifting rod 420; the first sleeve 460 is connected to the back of the support block 270 On one side away from the pressure plate 280; the first sleeve 460 and the second through hole 440 share a central axis; the first rotating tube 480 is rotatably embedded in the first sleeve 460, and the first rotating tube 480 and the first sleeve 460 share a central axis; the interior of the first rotating tube 480 is provided with a first internal thread; the inner diameter of the first rotating tube 480 is smaller than the inner diameter of the second through hole 440; the outer wall of the first lifting rod 420 is provided with a first external thread matching the first internal thread; the first lifting rod 420 is screwed on the first rotating tube 480.

[0041] At the same time, the connecting assembly also includes a second lifting rod 390, a second sleeve 470 and a second rotating tube 490; the second lifting rod 390 is vertically connected to the other end of one side of the pressing plate 280; the support block 270 is provided with a third through hole 450; the central axis of the third through hole 450 is perpendicular to the support surface 410; the second through hole 440 and the third through hole 450 are symmetrical about the center of the support block 270; the second lifting rod 390 is passed through the third through hole 450, and the inner diameter of the third through hole 450 is greater than the outer diameter of the second lifting rod 390; the second sleeve 470 is connected to the side of the support block 270 away from the pressure plate 280; the second sleeve 470 and the third through hole 450 share a central axis; the second rotating tube 490 is rotatably embedded in the second sleeve 470, and the second rotating tube 490 and the second sleeve 470 share a central axis; the interior of the second rotating tube 490 is provided with a second internal thread; the inner diameter of the second rotating tube 490 is smaller than the inner diameter of the third through hole 450; the outer wall of the second lifting rod 390 is provided with a second external thread matching the second internal thread; the second lifting rod 390 is screwed on the second rotating tube 490.

[0042] Specifically, the connecting assembly also includes a first gear 510, a second gear 520, a third gear 530, a rotating rod 380 and a rotating handle 340; the first gear 510 is coaxially sleeved on the first rotating tube 480; the second gear 520 is coaxially sleeved on the second rotating tube 490; the diameters of the first rotating tube 480 and the second rotating tube 490 are consistent; the sizes of the first gear 510 and the second gear 520 are consistent; the rotating rod 380 is rotatably connected to the side of the support block 270 away from the pressure plate 280; the third gear 530 is coaxially sleeved on the rotating rod 380; the first gear 510 and the second gear 520 are both meshed with the third gear 530; the first gear 510 and the second gear 520 are symmetrical with the rotating rod 380; the end of the rotating rod 380 away from the support block 270 is connected to the rotating handle 340.

[0043] Through the above technical solution, the pressure plate 280 can be driven to approach or move away from the support block 270; the operator can drive the third gear 530 to rotate by manually rotating the handle 340, thereby driving the first gear 510 and the second gear 520 to rotate synchronously and in the same direction, thereby driving the first rotating tube 480 and the second rotating tube 490 to rotate synchronously and in the same direction, and then driving the first lifting rod 420 and the second lifting rod 390 to rise and fall synchronously, so as to drive the pressure plate 280 to approach or move away from the support block 270.

[0044] Specifically, the connecting assembly further includes a protective cover 330; the protective cover 330 is disposed on the support block 270; the first sleeve 460, the second sleeve 470, the first rotating tube 480, the second rotating tube 490, the first gear 510, the second gear 520 and the third gear 530 are all disposed in the protective cover 330; the rotating rod 380 extends out of the protective cover 330, and the rotating handle 340 is located outside the protective cover 330; the first sleeve 460 and the second sleeve 470 have the same size; the first lifting rod 420 and the second lifting rod 390 have the same size; the inner diameter of the second through hole 440 and the third through hole 450 are the same; the inner diameter of the first sleeve 460 is the same as that of the second through hole 450; The wall is provided with a first annular groove (not shown), the outer wall of the first rotating tube 480 is provided with a second annular groove (not shown), the first annular groove surrounds the second annular groove, and a plurality of balls (not shown) are rolled and embedded between the first annular groove and the second annular groove, so that the first rotating tube 480 is rotatably embedded in the first sleeve 460; the inner wall of the second sleeve 470 is provided with a third annular groove (not shown), the outer wall of the second rotating tube 490 is provided with a fourth annular groove (not shown), the third annular groove surrounds the fourth annular groove, and a plurality of balls are rolled and embedded between the third annular groove and the fourth annular groove, so that the second rotating tube 490 is rotatably embedded in the second sleeve 470. Through the above technical solution, the structure and function of the present visualization biliary dilation kit are further improved.

[0045] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A visualized biliary dilation kit, characterized in that: The invention comprises a sheath tube, a guide wire, a tube expander and a connecting assembly; the sheath tube comprises a main body and a secondary body obliquely connected to the main body; the main body comprises a first end and a second end; the secondary body comprises a third end away from the main body; the main body is provided with an intervention channel, and the intervention channel respectively passes through the first end and the second end; the secondary body is provided with a first guide hole; the main body is provided with a second guide hole; the second guide hole is connected to the first guide hole; one end of the first guide hole passes through the third end; one end of the second guide hole passes through the second end; the guide wire Used to be sequentially inserted into the first guide hole and the second guide hole; the expansion tube is used to be inserted into the intervention channel; the sheath tube is a flexible sheath tube, and the intervention channel can be expanded by the expansion tube; the number of the expansion tubes is multiple; different expansion tubes have different diameters; an annular baffle is provided at one end of the expansion tube; the first and second convex plates are respectively connected to the two sides of the annular baffle; the sheath tube is formed with a support baffle at the first end; the connecting component is provided on the support baffle to fix the first and second convex plates so that the annular baffle fits against the support baffle.

2. A visualized biliary dilation kit according to claim 1, characterized in that: The connecting assembly includes a connecting rod and a first baffle; the connecting rod is vertically connected to the side of the supporting baffle away from the main body; the first baffle is connected to the connecting rod; the first baffle is parallel to the supporting baffle; the distance between the first baffle and the supporting baffle is a preset value; the thickness of the first convex plate is the preset value; when the annular baffle is in contact with the supporting baffle, the annular baffle can be rotated until the first convex plate is embedded between the first baffle and the supporting baffle, and at this time, one side of the first convex plate is in contact with the first baffle, and the other side of the first convex plate is in contact with the supporting baffle to fix the first convex plate.

3. A visualized biliary dilation kit according to claim 2, characterized in that: The connecting assembly also includes a support block and a pressure plate; the second protrusion plate and the first protrusion plate are symmetrically arranged with respect to the center of the annular baffle; the shape of the second protrusion plate is consistent with the shape of the first protrusion plate, and the thickness of the second protrusion plate is the preset value; the support block and the pressure plate are arranged on the side of the support baffle away from the connecting rod; the support block includes a support surface, and the support surface is flush with the side surface of the support baffle facing away from the main pipe body; when the annular baffle is in contact with the support baffle, the annular baffle can be rotated until the second protrusion plate is embedded between the support block and the pressure plate; the pressure plate can be in contact with one side of the second protrusion plate so that the second protrusion plate is in contact with the support surface to fix the second protrusion plate.

4. A visualized biliary dilation kit according to claim 3, characterized in that: The connecting assembly also includes a first driving component; a notch is provided on the side of the support baffle away from the connecting rod; a sliding rod is connected to the notch, and the sliding rod is parallel to the support baffle; the sliding rod is parallel to the supporting surface; a first through hole is provided through the support block; the sliding rod slides through the first through hole; the cross-section of the sliding rod is rectangular, and the cross-section of the first through hole is rectangular; the pressure plate is movably connected to the support block; the pressure plate is parallel to the supporting surface, and the pressure plate is on the side of the support block away from the main pipe body; the first driving component is used to drive the pressure plate to approach or move away from the support block.

5. A visualized biliary dilation kit according to claim 4, characterized in that: The connecting assembly also includes a spring, a second baffle and a second driving component; the second baffle is vertically connected to the sliding rod; the support block is between the second baffle and the main pipe body; the spring is sleeved on the sliding rod; one end of the spring is connected to the support block, and the other end of the spring is connected to the second baffle, and the spring is always in a compressed state; the elastic force of the spring makes the support block tend to approach the main pipe body; the second driving component is used to drive the support block away from the main pipe body.

6. A visualized biliary dilation kit according to claim 5, characterized in that: The second driving component includes an adjusting rotating tube, a supporting tube and a cam; the supporting tube is connected to a side of the supporting baffle close to the main body; the supporting tube and the main body share a central axis; the adjusting rotating tube is rotatably sleeved on the supporting tube; the adjusting rotating tube and the supporting tube share a central axis; the cam is coaxially sleeved on the outer wall of the adjusting rotating tube; the outer wall of the cam abuts against a side of the supporting block close to the main body; the outer wall of the adjusting rotating tube is provided with anti-slip textures.

7. The visualized biliary dilation kit according to claim 5, characterized in that: The connecting assembly also includes a first lifting rod, a first sleeve and a first rotating tube; the first lifting rod is vertically connected to one end of one side of the pressure plate; the support block is provided with a second through hole; the central axis of the second through hole is perpendicular to the support surface; the first lifting rod is passed through the second through hole, and the inner diameter of the second through hole is larger than the outer diameter of the first lifting rod; the first sleeve is connected to the side of the support block away from the pressure plate; the first sleeve and the second through hole share a central axis; the first rotating tube is rotatably embedded in the first sleeve, and the first rotating tube and the first sleeve share a central axis; a first internal thread is provided inside the first rotating tube; the inner diameter of the first rotating tube is smaller than the inner diameter of the second through hole; the outer wall of the first lifting rod is provided with a first external thread matching the first internal thread; the first lifting rod is screwed on the first rotating tube.

8. The visualized biliary dilation kit according to claim 7, characterized in that: The connecting assembly also includes a second lifting rod, a second sleeve and a second rotating tube; the second lifting rod is vertically connected to the other end of one side of the pressure plate; the support block is provided with a third through hole; the central axis of the third through hole is perpendicular to the support surface; the second through hole and the third through hole are symmetrical about the center of the support block; the second lifting rod is passed through the third through hole, and the inner diameter of the third through hole is larger than the outer diameter of the second lifting rod; the second sleeve is connected to the side of the support block away from the pressure plate; the second sleeve and the third through hole share a central axis; the second rotating tube is rotatably embedded in the second sleeve, and the second rotating tube and the second sleeve share a central axis; a second internal thread is provided inside the second rotating tube; the inner diameter of the second rotating tube is smaller than the inner diameter of the third through hole; the outer wall of the second lifting rod is provided with a second external thread matching the second internal thread; the second lifting rod is screwed on the second rotating tube.

9. A visualized biliary dilation kit according to claim 8, characterized in that: The connecting assembly also includes a first gear, a second gear, a third gear, a rotating rod and a rotating handle; the first gear is coaxially sleeved on the first rotating tube; the second gear is coaxially sleeved on the second rotating tube; the diameters of the first rotating tube and the second rotating tube are consistent; the sizes of the first gear and the second gear are consistent; the rotating rod is rotatably connected to the side of the support block away from the pressure plate; the third gear is coaxially sleeved on the rotating rod; the first gear and the second gear are both meshed with the third gear; the first gear and the second gear are symmetrical with the rotating rod; the end of the rotating rod away from the support block is connected with a rotating handle.

10. The visualized biliary dilation kit according to claim 9, characterized in that: The connecting assembly further comprises a protective cover; the protective cover is arranged on the supporting block; the first sleeve, the second sleeve, the first rotating tube, the second rotating tube, the first gear, the second gear and the third gear are all arranged in the protective cover; the rotating rod extends out of the protective cover, and the rotating handle is located outside the protective cover; the first sleeve and the second sleeve have the same size; the first lifting rod and the second lifting rod have the same size; The inner diameters of the second through hole and the third through hole are consistent.

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