CN116271273A - Endoscope support former - Google Patents

Abstract

The invention discloses an endoscope bracket former, and belongs to the field of medical appliances. An endoscope bracket forming device comprises a sleeve pipe sleeved on the periphery of a nasal bile duct; the rotating assembly is positioned at the upper end part of the sleeve and is coaxially and rotatably connected with the sleeve; the cutting assemblies are positioned at the lower end parts of the sleeves, and the output ends of the cutting assemblies are directly or indirectly connected with the rotating assemblies so as to be driven by the rotating assemblies to move; the nasal bile duct is cut by driving the cutting assembly through the rotating assembly, and in the cutting process, the nasal bile duct is cut without finding an angle; and the cutting position is no longer limited to places with larger space, such as stomach; instead, a smaller spatial location below the pylorus or duodenum, etc., may be selected for naso-biliary cutting.

Description

Endoscope support former

Technical Field

The invention belongs to the field of medical appliances, and particularly relates to an endoscope bracket forming device.

Background

At present, the endoscope technology rapidly develops treatment technology day by day, and various plastic external drainage tubes need to be cut off in the treatment process. An instrument having a cutting function is required.

For the nasal bile duct drainage operation, the common practice is to extend the nasal bile duct into the patient from the oral cavity and esophagus, fix one end of the tube in the appropriate part of the bile duct, and then lead the other end of the tube out of the nasal cavity at one side of the patient through the oral-nasal exchanger.

Long-term retention of nasal bile duct, patients cannot tolerate, so there are two existing approaches:

the first method is that the original nasal bile duct is replaced to form an inner bracket; however, the success rate of the method is not high, and the inner bracket is replaced in the original liver, gall and viscera after the original nasal bile duct is taken out, so that the accurate position is not well found, and the fixing is not well continued at the original position.

The second way is that after the nose bile duct enters the body from the oral cavity and one end is fixed in the bile duct, the cutting operation is carried out on the stomach of a patient through the disposable endoscope scissors, so that the front end of the nose bile duct is positioned in the body to form a bracket, the effect of bile drainage into intestines and stomach is achieved on the bile duct blocking part or the lesion part, and the pain of the patient is relieved; however, this method still has certain drawbacks, such as the existing endoscopic stent-forming device, when cutting the naso-biliary tract, the endoscopic stent-forming device can only cut the corner of the stomach (the space is larger), and when in operation, the perpendicular angle between the endoscopic stent-forming device and the naso-biliary tract is required to be 90 degrees, so that the naso-biliary tract can be cut off smoothly by using the endoscopic stent-forming device. In the whole operation process, the cutting angle is difficult to find, the requirement on the operation difficulty is high, the free end of the nasal bile duct is easy to cause various problems such as gastric swelling and bile reflux in the stomach, one end of the nasal bile duct cut by the common endoscope scissors is quite rough, meanwhile, the one end of the nasal bile duct is also inclined due to the problem of the cutting angle, and the problem of gastrointestinal perforation can be caused when a patient moves. In addition, the cutting operation can not be successfully completed for every patient, the pain process of the patient is increased,

disclosure of Invention

The technical problem to be solved by the invention is to provide an endoscope bracket forming device which can be realized.

The invention relates to an endoscope bracket forming device which comprises a sleeve pipe sleeved on the periphery of a nasal bile duct.

And the rotating assembly is positioned at the upper end part of the sleeve and is coaxially and rotatably connected with the sleeve.

A plurality of cutting assemblies; the cutting assembly is positioned at the lower end part of the sleeve, and the output end of the cutting assembly is directly or indirectly connected with the rotating assembly so as to be driven by the rotating assembly to move; the output end of the cutting assembly is positioned outside the nasal bile duct in a free state, and is positioned inside the nasal bile duct after being driven to move so as to cut the nasal bile duct; the cutting assembly is coaxially and rotatably connected with the sleeve so as to be driven by the rotating assembly to rotate; the rotation of the cutting assembly as a whole occurs after the output end of the cutting assembly has moved.

As a further improvement of the invention, the endoscope stent former further comprises a fixed component, a rotating wheel and a fixed wheel; the sleeve comprises an outer sleeve and an inner sleeve; the cutting assemblies are uniformly arranged on the outer side of the rotating wheel; the cutting assembly includes a blade, a first spring, a rigid post, and a blade mount.

The blade upper end is provided with blade dog, blade axle sleeve and spring fixing base, blade axle sleeve with the spring fixing base is located blade dog both sides.

The bottom in the blade fixing seat is provided with a fixing shaft; the blade shaft sleeve is sleeved on the fixed shaft, and a spring fixing hole is formed in one side, corresponding to the fixed shaft, of the top in the blade fixing seat; the first spring is fixedly arranged between the spring fixing hole and the spring fixing seat.

The rigid column penetrates through the blade fixing seat, and one side of the blade stop block, provided with the blade shaft sleeve, is tangential to the rigid column.

The rotating assembly comprises a first rotating disc, a second rotating disc and a flexible column; one end of the flexible column is fixedly arranged on the left side surface of the first rotary disk, and the other end of the flexible column is fixedly arranged on the right side surface of the second rotary disk; one side of the second rotating disk, which is far away from the flexible column, is fixedly connected with one end of the rigid column, which is far away from the blade.

The fixing assembly comprises a first fixing ring and a second fixing ring; the first fixing ring and the second fixing ring are respectively connected with one side of the first rotating disk far away from the flexible column in a sliding way; a second spring is arranged between the first fixing ring and the second fixing ring; the second spring is used for expanding the first fixing ring and the second fixing ring; the fixing component is used for fixing the target cut object.

As a further improvement of the invention, the endoscope bracket former is also provided with a detachable fixing ring and a front cover, wherein a magnetic piece is arranged in the front cover, and the detachable fixing ring comprises a third fixing ring and a fourth fixing ring; the third fixing ring and the fourth fixing ring are provided with magnetic attraction pieces; the magnetic attraction piece can be magnetically attracted and fixed by the magnetic piece, and the third fixing ring and the fourth fixing ring are magnetically attracted and fixed on the front cover.

As a further improvement of the invention, the rotating wheel and the fixed wheel are in a ring shape, a circle of first grooves are arranged on the rotating wheel along the periphery, and a circle of first track holes are arranged in the middle of the first grooves in a penetrating manner.

The fixed wheel is provided with a circle of second grooves along the periphery, and the second grooves are provided with a circle of second track holes in a penetrating way; the rotating wheel is arranged in the second groove of the fixed wheel in a sliding manner, and the first track hole and the second track hole are arranged in a superposition manner to form a blade track; the rotating wheel can rotate and slide on the fixed wheel.

As a further improvement of the invention, the lower end of the blade is a blade edge; the cutting edge is arranged opposite to the first track hole; when the rigid column is far away from the first spring, the tangent angle between the rigid column and the blade stop block reaches the maximum value, and the blade is contracted and hidden in the first groove under the stretching action of the first spring; the rolling and/or sliding rigid post pushes the blade stop and simultaneously causes the first spring to stretch, thereby causing the blade to cut through the blade track and into the inside of the fixed wheel as the blade rotates.

As a further improvement of the invention, the outer sides of the two ends of the first fixing ring are respectively provided with a first clamping column, and the outer sides of the two ends of the second fixing ring are respectively provided with a first clamping ring; the first clamping ring is used for being fixed on the first clamping column.

As a further improvement of the invention, the inner sleeve is fixedly provided with a first rotary fixing seat and a second rotary fixing seat; the second rotary fixing seat is positioned at the left side end of the inner sleeve and is adjacent to and abutted against the fixed wheel.

As a further improvement of the invention, the first rotary disk is arranged on the first rotary fixing seat in a sliding way; the second rotating disc is arranged on the second rotating fixed seat in a sliding manner; the flexible column is arranged on the outer side of the inner sleeve.

As a further improvement of the invention, the outer sleeve is sleeved outside the cutting assembly, the flexible column and the second rotating disk; one end of the outer sleeve, which is far away from the cutting assembly, is fixedly connected with the first rotary disk; the inner side wall of the other end of the outer sleeve is fixedly connected with the top of the outer side of the blade fixing seat on the cutting assembly.

As a further improvement of the invention, the front cover is fixedly connected with one side of the outer sleeve, which is far away from the first rotating disk.

Compared with the prior art, the invention has the beneficial effects that: the endoscope support forming device is provided with a sleeve which is sleeved outside a nasal bile duct for cutting, and is also provided with a rotating assembly and a plurality of cutting assemblies; the rotating component is positioned at the upper end part of the sleeve and is coaxially and rotatably connected with the sleeve; the cutting assembly is positioned at the lower end part of the sleeve, and the output end of the cutting assembly is directly or indirectly connected with the rotating assembly; the nasal bile duct is cut by driving the cutting component through the rotating component; so arranged, in the cutting process, the angle does not need to be found any more for cutting; and the cutting position is no longer limited to places with larger space, such as stomach; instead, a smaller spatial location below the pylorus or duodenum, etc., may be selected for naso-biliary cutting.

In conclusion, the technical scheme not only reduces the difficulty requirements of medical staff during operation, but also is not easy to cause various problems of gastric swelling, bile reflux and the like of patients. And the nasal bile duct cutting failure or falling off from the bile duct due to the cutting failure can be effectively avoided, and the secondary intubation is needed, so that the patient is more uncomfortable in the whole operation process.

Drawings

FIG. 1 is a schematic diagram of an overall structure of an embodiment of the present invention;

FIG. 2 is a second schematic diagram of an overall structure of an embodiment of the present invention;

FIG. 3 is a schematic diagram of the internal structure of the present invention;

FIG. 4 is a second schematic diagram of the internal structure of the present invention;

FIG. 5 is a third schematic view of the internal structure of the present invention;

FIG. 6 is a schematic view of the structure of the blade and blade holder of the present invention;

FIG. 7 is a schematic view of a cutting assembly according to the present invention;

FIG. 8 is a second schematic view of a cutting assembly according to the present invention;

fig. 9 is a schematic structural view of the fixing assembly 2 of the present invention;

FIG. 10 is a schematic diagram showing the overall structure of a second embodiment of the present invention;

FIG. 11 is a schematic view of a detachable fixing ring according to the present invention;

fig. 12 is a schematic view of the front cover structure of the present invention.

The reference numerals in the figures illustrate:

1. a cutting assembly; 11. a blade; 111 blade stops; 112. blade shaft sleeve; 113. a spring fixing seat; 114. a blade; 12. a first spring; 13. a rigid column; 14. a blade holder; 141. a fixed shaft; 15. a rotating wheel; 151. a first track hole; 152. a first groove; 16. a fixed wheel; 161. a second track hole; 162. a second groove; 2. a fixing assembly; 21. a first fixing ring; 22. a second fixing ring; 23. a second spring; 24. a first snap ring; 25. a first clamping column; 3. an outer sleeve; 4. an inner sleeve; 41. a first rotary fixing seat; 42. the second rotary fixing seat; 5. a rotating assembly; 51 a first rotating disc; 52. a second rotating disk; 53. a handle; 54. a flexible column; 6. a front cover; 7. a detachable fixing ring; 71. a third fixing ring; 72. a fourth fixing ring; 73. a third spring; 74. a second snap ring; 75. a second clamping column; 76. a magnetically attractable member; 77. and a magnetic attraction piece.

Detailed Description

First embodiment: referring to fig. 1-9, an endoscopic stent former includes a plurality of cutting assemblies 1, a stationary assembly 2, an outer sleeve 3, an inner sleeve 4, a rotating assembly 5, a rotating wheel 15, and a stationary wheel 16.

For convenience of description below, the side of the inner sleeve 4 adjacent to the cutting assembly 1 is set to the left side and the side of the inner sleeve adjacent to the fixing assembly 2 is set to the right side.

The rotating wheel 15 and the fixed wheel 16 are in a ring shape, a circle of first grooves 152 are formed in the rotating wheel 15 along the periphery, and a circle of first track holes 151 are formed in the middle of the first grooves 152 in a penetrating mode. The fixed wheel 16 is fixedly arranged at the left side end of the inner sleeve 4, and a circle of second track holes 161 are formed in the fixed wheel 16 along the periphery in a penetrating manner.

The fixed sheave 16 is provided with a circle of second grooves 162 along the outer circumference; the rotating wheel 15 is slidably disposed in the second groove 162 of the fixed wheel 16, and the width of the rotating wheel 15 is consistent with the width of the second groove 162, so that the rotating wheel 15 has an axial limit. The first track hole 151 and the second track hole 161 are overlapped to form a blade track; the rotary wheel 15 can slide rotationally on the fixed wheel 16.

The cutting assemblies 1 are uniformly arranged on the outer side of the circumference of the rotary wheel 15; the cutting assembly 1 comprises a blade 11, a first spring 12, a rigid post 13 and a blade holder 14; the blade fixing seat 14 is fixedly arranged in the first groove 152 of the rotary wheel 15.

The upper end of the blade 11 is provided with a blade stop 111, a blade sleeve 112 and a spring fixing seat 113, and the blade sleeve 112 and the spring fixing seat 113 are positioned on two sides of the blade stop 111. The lower end of the blade 11 is a blade edge 114;

the inside of the blade fixing seat 14 is in a transverse U shape; a fixed shaft 141 is arranged at the bottom of the blade fixing seat 14 near the U-shaped opening; the blade shaft sleeve 112 is sleeved on the periphery of the fixed shaft 141, so that the blade 11 can rotate around the axis of the fixed shaft 141, and a spring fixing hole is formed in one side, corresponding to the fixed shaft 141, of the top in the blade fixing seat 14; the first spring 12 is fixedly arranged between the spring fixing hole and the spring fixing seat 113; the first spring 12 is always in tension.

The rigid column 13 is arranged in the blade fixing seat 14 in a penetrating way, and one side of the blade stop block 111 provided with the blade shaft sleeve 112 is tangential to the rigid column; the rigid posts 13 push the blade stops 111 during rolling and/or sliding, causing the blade 11 to rotate.

The blade 114 is arranged opposite to the first track hole 151; when the rigid column 13 is far away from the first spring 12, the tangent angle between the rigid column 13 and the blade stop 111 reaches the maximum value, and the blade 11 is retracted and hidden in the first groove 152 due to the stretching action of the first spring 12; when the rolling and/or sliding rigid column 13 pushes the blade stop 111 and simultaneously stretches the first spring 12, so that the blade 11 rotates, the blade 11 cuts to the inner side of the fixed wheel 16 through the blade track; when the blade 11 extends to the limit position, the rotary wheel 15 slides on the fixed wheel 16 under the continuous acting force of the rigid column 13, so that rotary cutting is realized; with this arrangement, the cutting operation can be performed better and faster.

The rotating assembly 5 comprises a first rotating disc 51, a second rotating disc 52 and a flexible post 54; a handle 53 is fixedly arranged on the periphery of the first rotary disk 51; one end of the flexible column 54 is fixedly arranged on the left side surface of the first rotary disk 51, the other end of the flexible column 54 is fixedly arranged on the right side surface of the second rotary disk 52, and the flexible column 54 is made of flexible or elastic materials, so that the flexible column 54 can spirally deform around the axis of the inner sleeve 4; one side of the second rotating disc 52, which is far away from the flexible column 54, is fixedly connected with one end of the rigid column 13, which is far away from the blade 11; after the rigid column 13 and the flexible column 54 are fixed with the second rotating disc 52, they are not detachable, so that the phenomenon that the rigid column 13 and the flexible column 54 fall off in the rotating process of the rotating assembly 5 is avoided.

The second rotating disc 52 is sleeved on the outer periphery of the inner sleeve 4 and is rotationally connected with the inner sleeve 4 so that the inner sleeve 4 can rotate around the axis of the inner sleeve 4, and meanwhile, the second rotating disc 52 is limited by the axial direction so as to prevent the second rotating disc 52 from moving along the axial direction.

The flexible column 54 is an elastic member that can be stretched when subjected to an external force; when the external force is removed, the original state is restored; has certain elastic restoring capability.

The fixing assembly 2 comprises a first fixing ring 21 and a second fixing ring 22; the first fixing ring 21 and the second fixing ring 22 are respectively connected with one side of the first rotating disk 51 away from the flexible column 54 in a sliding way; the first fixing ring 21 and the second fixing ring 22 slide towards the center of the first rotating disc 51; a second spring 23 is arranged between the first fixing ring 21 and the second fixing ring 22, and the second spring 23 is always in a supporting state. The first fixing ring 21, the second fixing ring 22 and the second spring 23 are surrounded to form a circular ring, and are positioned at the opening on the right side of the inner sleeve 4.

The outer sides of the two ends of the first fixing ring 21 are respectively provided with a first clamping column 25, and the outer sides of the two ends of the second fixing ring are respectively provided with a first clamping ring 24; the first clamping ring 24 is used for being fixed on the first clamping column 25.

Preferably, the first fixing ring 21 and the second fixing ring 22 are both semicircular.

The inner sleeve 4 is fixedly provided with a first rotary fixing seat 41 and a second rotary fixing seat 42; the second rotary fixing seat 42 is located at the left end of the inner sleeve 4, and is adjacent to and abutted against the fixed wheel 16; the first rotary fixing seat 41 is positioned at the right side end of the inner sleeve 4; the first rotating disc 51 is slidably arranged on the first rotating fixed seat 41, and the first rotating disc 51 rotationally slides along the outer circumference of the first rotating fixed seat 41; the second rotating disc 52 is slidably disposed on the second rotating fixed seat 42; the flexible column 54 is disposed outside the inner sleeve 4, and the second rotating disk 52 slides along the outer circumference of the second rotating fixing seat 42.

The outer sleeve 3 is sleeved outside the cutting assembly 1, the flexible column 54 and the second rotary disk 52; one end of the outer sleeve 3, which is far away from the cutting assembly 1, is fixedly connected with a first rotary disk 51; the inner side wall of the other end of the outer sleeve 3 is fixedly connected with the top of the outer side of the blade fixing seat 14 on the cutting assembly 1.

Optionally, the endoscope bracket former is further provided with a front cover 6, and the front cover 6 is fixedly connected with one side of the outer sleeve 3 away from the first rotating disc 51.

Working principle:

when the target cut object passes through the inner side of the inner sleeve 4 and reaches a preset cutting point, the fixing assembly 2 is folded, the first clamping ring 24 is fixed on the first clamping column 25, and the target cut object is fixed; so set up, in the in-process of rotatory cutting, avoid the object cut to appear following synchronous rotatory phenomenon, alleviate patient's misery.

The first rotating disc 51 is rotated through the handle 53, the flexible column 54 and the second rotating disc 52 fixedly connected with the flexible column 54 are driven to rotate, the rigid column 13 on the left side face of the second rotating disc moves along, the rigid column 13 pushes the blade stop block 111, the first spring 12 stretches, the blade 11 runs, the blade 11 hidden in the first groove 152 is contracted, and the blade 11 runs to the inner side of the fixed wheel 16 through the blade track and cuts a target.

When the blade 11 extends to the limit position, the rotary wheel 15 slides on the fixed wheel 16 under the continuous acting force of the rigid column 13, so that rotary cutting is realized; by the arrangement, the cutting operation of the target cut object can be performed better and faster.

The endoscope bracket forming device is sleeved outside a target cut object for cutting, and the arrangement is that in the cutting process, the angle does not need to be found any more for cutting; and the cutting position is no longer limited to places with larger space, such as stomach; instead, a smaller spatial location below the pylorus or duodenum, etc., may be selected for cutting of the target.

Not only reduces the difficulty requirement of medical staff during operation, but also is not easy to cause various problems of gastric swelling, bile reflux and the like of patients.

The surfaces of the outer members of the outer sleeve 3 and the front cover 6 are coated with a hydrophilic material layer, or the outer members themselves are made of a hydrophilic material, so that the endoscopic stent former is convenient to be inserted into a patient.

Specific embodiment II: referring to an endoscope supporting frame former of fig. 10-12, based on the first embodiment, a plurality of magnetic attraction pieces 77 are disposed at one end of the front cover 6 away from the cutting assembly 1, and the magnetic attraction pieces 77 are disposed at intervals in the front cover 6, and the magnetic attraction pieces 77 have magnetism.

The endoscope support frame former is also provided with a detachable fixing ring 7, and the detachable fixing ring 7 comprises a third fixing ring 71 and a fourth fixing ring 72; the third fixing ring 71 and the fourth fixing ring 72 are made of a material which can not be magnetically absorbed, and a plurality of magnetically absorbed pieces 76 are arranged in the third fixing ring 71 and the fourth fixing ring 72; the magnetically attractable pieces 76 are arranged at intervals, and the number and the interval distance of the magnetically attractable pieces 76 are consistent with those of the magnetically attractable pieces 77.

A third spring 73 is arranged between the third fixing ring 71 and the fourth fixing ring 72, and the third spring 73 is always in a compressed state.

Second clamping rings 74 are respectively arranged at the outer sides of the two ends of the third fixing ring 71, and second clamping columns 75 are respectively arranged at the outer sides of the two ends of the fourth fixing ring 72; the second clamping ring 74 is used for being fixed on the second clamping column 75; the magnetic attraction piece 77 is magnetically connected with the magnetically attractable piece 76.

Preferably, the third fixing ring 71 and the fourth fixing ring 72 are each in a semicircular arc shape.

Since the magnetic force in the direction perpendicular to the position where the magnetic attraction member 77 and the magnetically attractable member 76 are magnetically attracted is the most appropriate, when the magnetic attraction member 77 moves rotationally with the front cover 6, the magnetic attraction member 77 and the magnetically attractable member 76 are easily dislocated and removed, so that they are not attracted together.

Working principle:

based on the first embodiment, the detachable fixing ring 7 is added, after the target cut object reaches the preset cutting point, the second clamping ring 74 is fixed on the second clamping post 75, and the target cut object is further fixed; in the rotary cutting process, the magnetic force perpendicular to the magnetic connection direction of the magnetic attraction piece 77 and the magnetic attraction piece 76 is the most probable, so that when the magnetic attraction piece 77 moves along with the rotation of the front cover 6, the magnetic attraction piece 77 and the magnetic attraction piece 76 are easy to dislocate and move away, so that the magnetic attraction piece 77 and the magnetic attraction piece 76 are not adsorbed together any more, the detachable fixing ring 7 and the target cut object fall off together, and can be taken out together with the target cut object.

Claims (10)

1. An endoscopic stent former, comprising:

the sleeve is sleeved on the periphery of the nasal bile duct;

the rotating assembly (5) is positioned at the upper end part of the sleeve and is coaxially and rotatably connected with the sleeve;

a plurality of cutting assemblies (1); the cutting assembly (1) is positioned at the lower end part of the sleeve, and the output end of the cutting assembly (1) is directly or indirectly connected with the rotating assembly (5) so as to be driven by the rotating assembly (5) to move; the output end of the cutting assembly (1) is positioned outside the nasal bile duct in a free state, and is positioned inside the nasal bile duct after being driven to move so as to cut the nasal bile duct; the cutting assembly (1) is coaxially and rotatably connected with the sleeve, so as to be driven by the rotating assembly (5) to rotate; the rotation of the cutting assembly (1) as a whole occurs after the movement of the output end of the cutting assembly (1).

2. An endoscopic stent former according to claim 1, wherein: the endoscope bracket former is also provided with a fixed component (2), a rotating component (5), a rotating wheel (15) and a fixed wheel (16); the sleeve comprises an outer sleeve (3) and an inner sleeve (4); the cutting assemblies (1) are uniformly arranged on the outer side of the rotating wheel (15); the cutting assembly (1) comprises a blade (11), a first spring (12), a rigid column (13) and a blade fixing seat (14);

the upper end part of the blade (11) is provided with a blade stop block (111), a blade shaft sleeve (112) and a spring fixing seat (113), and the blade shaft sleeve (112) and the spring fixing seat (113) are positioned on two sides of the blade stop block (111);

the bottom in the blade fixing seat (14) is provided with a fixing shaft (141); the blade shaft sleeve (112) is sleeved on the fixed shaft (141), and a spring fixing hole is formed in one side, corresponding to the fixed shaft (141), of the top in the blade fixing seat (14); the first spring (12) is fixedly arranged between the spring fixing hole and the spring fixing seat (113);

the rigid column (13) is arranged in the blade fixing seat (14) in a penetrating way, and one side of the blade stop block (111) provided with the blade shaft sleeve (112) is tangential to the rigid column;

the rotating assembly (5) comprises a first rotating disc (51), a second rotating disc (52) and a flexible column (54); one end of the flexible column (54) is fixedly arranged on the left side surface of the first rotary disk (51), and the other end of the flexible column (54) is fixedly arranged on the right side surface of the second rotary disk (52); one side of the second rotary disk (52) far away from the flexible column (54) is fixedly connected with one end of the rigid column (13) far away from the blade (11);

the fixing assembly (2) comprises a first fixing ring (21) and a second fixing ring (22); the first fixing ring (21) and the second fixing ring (22) are respectively connected with one side of the first rotating disc (51) far away from the flexible column (54) in a sliding way; a second spring (23) is arranged between the first fixing ring (21) and the second fixing ring (22); the second spring (23) expands the first fixing ring (21) and the second fixing ring (22); the fixing component (2) is used for fixing a target cut object.

3. An endoscopic stent former according to claim 2, wherein: the endoscope bracket former is also provided with a detachable fixing ring (7) and a front cover (6), a magnetic piece (77) is arranged in the front cover (6), and the detachable fixing ring (7) comprises a third fixing ring (71) and a fourth fixing ring (72); the third fixing ring (71) and the fourth fixing ring (72) are provided with a magnetic attraction piece (76); the magnetically attractable piece (76) can be magnetically attracted and fixed by the magnetic piece (77), and the third fixing ring (71) and the fourth fixing ring (72) are magnetically attracted and fixed on the front cover (6).

4. An endoscopic stent former according to claim 2, wherein: the rotary wheel (15) and the fixed wheel (16) are in a ring shape, a circle of first grooves (152) are formed in the periphery of the rotary wheel (15), and a circle of first track holes (151) are formed in the middle of the first grooves (152) in a penetrating mode;

the fixed wheel (16) is provided with a circle of second grooves (162) along the periphery, and the second grooves (162) are provided with a circle of second track holes (161) in a penetrating way; the rotating wheel (15) is arranged in a second groove (162) of the fixed wheel (16) in a sliding manner, and the first track hole (151) and the second track hole (161) are arranged in a superposition manner to form a blade track; the rotary wheel (15) can rotate and slide on the fixed wheel (16).

5. An endoscopic stent former according to claim 2, wherein: the lower end part of the blade (11) is a blade (114); the cutting edge (114) is arranged opposite to the first track hole (151); when the rigid column (13) is far away from the first spring (12), the tangent angle between the rigid column (13) and the blade stop block (111) reaches the maximum value, and the blade (11) is contracted and hidden in the first groove (152) due to the stretching action of the first spring (12); when the rolling and/or sliding rigid column (13) pushes the blade stop (111) and the first spring (12) stretches, the blade (11) cuts to the inner side of the fixed wheel (16) through the blade track when the blade (11) rotates.

6. An endoscopic stent former according to claim 2, wherein: the outer sides of the two ends of the first fixed ring (21) are respectively provided with a first clamping column (25), and the outer sides of the two ends of the second fixed ring are respectively provided with a first clamping ring (24); the first clamping ring (24) is used for being fixed on the first clamping column (25).

7. An endoscopic stent former according to claim 2, wherein: the inner sleeve (4) is fixedly provided with a first rotary fixing seat (41) and a second rotary fixing seat (42); the second rotary fixing seat (42) is positioned at the left side end of the inner sleeve (4) and is adjacent to and abutted against the fixing wheel (16).

8. An endoscopic stent former according to claim 7, wherein: the first rotating disc (51) is arranged on the first rotating fixed seat (41) in a sliding manner; the second rotating disc (52) is arranged on the second rotating fixed seat (42) in a sliding manner; the flexible column (54) is arranged outside the inner sleeve (4).

9. An endoscopic stent former according to claim 2, wherein: the outer sleeve (3) is sleeved outside the cutting assembly (1), the flexible column (54) and the second rotary disk (52); one end of the outer sleeve (3) far away from the cutting assembly (1) is fixedly connected with the first rotary disk (51); the inner side wall of the other end of the outer sleeve (3) is fixedly connected with the top of the outer side of the blade fixing seat (14) on the cutting assembly (1).

10. An endoscopic stent former according to claim 3, wherein: the front cover (6) is fixedly connected with one side of the outer sleeve (3) far away from the first rotary disk (51).

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