CN210933336U

CN210933336U - Anal fistula seton drainage tube convenient for ligation and measurement

Info

Publication number: CN210933336U
Application number: CN201921630343.0U
Authority: CN
Inventors: 朱静怡; 汪庆明; 赵文俊; 杨达成; 邹琪琦; 徐进
Original assignee: Shuguang Hospital Affiliated to Shanghai University of TCM
Current assignee: Shuguang Hospital Affiliated to Shanghai University of TCM
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-07-07
Anticipated expiration: 2029-09-27

Abstract

The utility model belongs to the technical field of medical instrument, a anal fistula seton drainage tube convenient to ligature, measurement is related to. Comprises a drainage tube, a snare, an upper ring thimble, an auxiliary upper ring device and a rubber ring; the drainage tube is a plurality of hoses with scales; the snare is of a hollow tubular structure, and is provided with a snare section and a clamping section; the ferrule section is used for sleeving a rubber ring with an enlarged opening, so that ligation is facilitated; the cylindrical surface of the clamping section is provided with a groove which forms a through hole with an internal hollow structure; the inner diameter of the clamping section is larger than that of the ferrule section; the upper ring thimble consists of a connector and a conical structure; the connector is detachably connected with the ferrule section; the auxiliary ring feeding device comprises a holding section and a propelling section; the holding section is of a cylinder structure, so that force application and propulsion are facilitated; the lower end of the propelling section is provided with a stopping ring, and the upper end part of the propelling section is fixedly connected with the holding section. Its advantages are: has various specifications, is respectively suitable for different diseases, has strong specificity and functionality, durable material, convenient ligation and simple and convenient subsequent stringing operation.

Description

Anal fistula seton drainage tube convenient for ligation and measurement

Technical Field

The utility model belongs to the technical field of the medical instrument technique and specifically relates to an anal fistula stringing drainage tube convenient to ligature, measurement.

Background

Anal fistula is a common intractable disease in surgery. Most of low anal fistulas can be radically cured by incision or excision. High complex anal fistulas, due to their anatomical features, simply incise, can damage the anal sphincter and cause anal incontinence. And the hanging-line drainage treatment can not only protect the anal sphincter, but also has small postoperative scar and smooth drainage, and is one of the most traditional and simplest operation modes of complicated anal fistula. The thread-hanging drainage therapy is mainly applied to short-term drainage of complex anal fistula and high-position horseshoe fistula at present, and is particularly effective to long-term drainage of anal fistula secondary to Crohn's disease and AIDS.

At present, generally used thread-hanging drainage devices mainly use silk threads, rubber bands, catheters and the like, are not strong in specificity, have no uniform specification in length, thickness, material quality, appearance and the like, and have no uniform evaluation standard in convenience, durability and patient adaptability. Therefore, a wire-hanging drainage device specially aiming at anal fistula needs to be developed for clinical use.

Chinese patent documents: CN202699204U discloses a treatment anal fistula is with locking-type ligature, and it includes hasp and ligature, characterized by: the table tennis bat is characterized in that the lock catch is connected with one end of the ligature line, a table tennis bat-shaped lock hole is formed in the lock catch, the ligature line is elastic, and a plurality of round balls are arranged on the ligature line. When in operation, the ligature can be placed in the ring formed by the ligature and the lock catch along the fistula, and the ligature can be tightened according to the requirement. The patent literature has the beneficial effects that: simple and convenient to place in the art, the postoperative is tightened up ligature operation is simple and easy, can easily accomplish alone, and the time spent is few, and the painful little characteristics of patient. Although the ligation operation is simplified, the patent document does not provide a drainage tube suitable for different disease conditions, and the round ball is arranged on the ligation thread, so that the smoothness of the ligation is damaged, the discomfort of a patient is possibly caused, and once the ball slips, the uncontrolled shrinkage of the ligation thread can be caused, the pain is brought to the patient, and even the dangerous hidden danger is caused.

Chinese patent documents: CN203424969U discloses an anal fistula string line convenient to tighten up, including the elastic webbing body and the knot body, the tip of the elastic webbing body is provided with a plurality of round holes side by side along the length direction of the elastic webbing body, the knot body passes through the round hole is hung to be buckled and is used for with on the elastic webbing body the both ends of the elastic webbing body are connected. When in use, the two ends of the elastic belt body are hung and buckled on the buckle body, thereby greatly shortening the time of anal fistula operation. The anal fistula seton that this patent document provided still has the advantage that the elasticity is adjusted conveniently and the elastic webbing body is difficult for skidding. In addition, the round hole at the end part of the elastic belt body is convenient for the penetration and the leading of the probe. But does not provide a drainage tube suitable for different diseases, and during the subsequent stringing operation, the circular hole hanging buckle still needs to be unfastened, and then the stringing ligation operation is carried out, so the operation process is still very complicated.

In summary, there is a need for an anal fistula seton drainage tube which provides multiple specifications, is suitable for different conditions of an illness, has strong specificity and functionality, is durable in material, is convenient for ligation, and is simple and convenient for ligation and measurement in subsequent seton operation.

Disclosure of Invention

The utility model aims at solving among the prior art anal fistula stringing drainage device specification and differing, the specificity is not strong, problem that ligature and follow-up stringing operation are complicated provides one kind and has multiple specification, is applicable to different state of an illness respectively, and specificity and functional strong, and the material is durable, the ligature of being convenient for, and follow-up stringing easy and simple to handle's anal fistula stringing drainage tube of ligature, measurement of being convenient for.

In order to achieve the purpose, the utility model adopts the technical proposal that:

an anal fistula seton drainage tube convenient for ligation and measurement; comprises a drainage tube, a snare, an upper ring thimble, an auxiliary upper ring device and a plurality of rubber rings; the drainage tube is of a hose structure; the snare is a hollow tubular structure with two open ends; the snare is provided with a snare section and a clamping section; the ferrule section is arranged at the end part of the snare, and the outer diameter of the ferrule section is smaller than that of the snare; the clamping section is arranged at a position outside the ferrule section on the snare, and the outer diameter of the clamping section is larger than that of the snare; the cylindrical surface of the clamping section is provided with symmetrical grooves which are communicated with the hollow structure inside the clamping section, and a through hole which is transversely communicated is formed on the clamping section; the inner diameter of the clamping section is larger than that of the ferrule section; one end of the upper ring thimble is provided with a connector, and the other end of the upper ring thimble is of a conical structure; the connector is detachably connected with the ferrule section; the auxiliary ring feeding device comprises a holding section and a pushing section; the holding section is of a cylinder structure; the lower end of the propelling section is provided with a stopping ring, and the upper end of the propelling section is fixedly connected with one end of the holding section; the stopping ring protrudes out of the outer surface of the propelling section; the rubber ring is of an annular structure.

As a preferred technical scheme, the drainage tube comprises a plurality of specifications, and the diameter of the drainage tube at least comprises 2mm, 3.5mm, 5mm and 7mm of drainage tube.

As a preferred technical scheme, the drainage tube with the diameter of 2mm and 3.5mm has a solid cylindrical structure; the diameter is 5mm, 7mm the drainage tube, its body is hollow cylinder structure.

As a preferable technical scheme, the drainage tube is provided with scale marks.

As a preferred technical scheme, the drainage tube is made of medical latex materials.

As a preferred technical scheme, the connector is a cylinder, the outer diameter of the connector is consistent with the inner diameter of the ferrule section, and the connector is connected with the ferrule section in a matched mode.

As a preferred technical scheme, the snare and the upper ring thimble are made of medical plastics; the inner aperture of the rubber ring is small, and the rubber ring is made of high-elasticity medical rubber materials.

As a preferred technical scheme, the propelling section is four strip-shaped bodies which are orthogonally arranged and are not connected with each other, the opening size of the propelling section can be adjusted, and the tail end of the propelling section is provided with a cone tip.

As a preferred technical scheme, the other end of the upper ring thimble can also be of a cross-shaped conical structure, correspondingly, the propelling section is of a cylinder structure provided with a cross groove, and the cross groove is matched with the cross-shaped conical structure.

The utility model has the advantages that:

1. the utility model provides a snare can utilize last circle thimble suit rubber circle, shifts the rubber circle to the drainage tube again, accomplishes the ligature, and the effectual elasticity and the size of having avoided the rubber circle are to the influence of ligature, use the fixed drainage tube of rubber circle ligature to have also solved present knotting with traditional silk thread and have fallen the line easily and scatter and the troublesome poeration's problem moreover, have also made things convenient for the operation flow of follow-up tight line.

2. The utility model discloses a drainage tube that has different specification diameters makes and can select the drainage tube of different specifications according to the state of an illness of difference clinically, be equipped with the scale mark on the drainage tube, can observe the string line condition and tight line degree directly perceivedly, make traditional string line treatment operation standardization, can estimate the real-time length that the fistula says moreover.

3. The drainage tube is made of medical latex materials, the adaptability of a patient to the latex materials is high, the patient can be relieved from suffering during the process of hanging the line by using the drainage tube, and the tubular structure of the drainage tube is more beneficial to the removal of seepage in a fistula tract.

4. The utility model discloses be equipped with supplementary circle ware, be equipped with the propulsion section on it and control the section, it can make things convenient for the application of force to impel to hold the section, impel the section cooperation to go up the opening that the thimble made its expansion rubber circle that can be more convenient, impel the section on the circle of moving that hinders and can effectually prevent that the rubber circle from shifting up to guarantee that the rubber circle can push the lasso section smoothly, it is little to have solved the rubber circle inner bore, and elasticity is big, is difficult for carrying out the problem of the operation of the lantern ring.

Drawings

FIG. 1 is a schematic view of the anal fistula seton drainage tube of the utility model, which is convenient for ligation and measurement.

FIG. 2 is a perspective view of the anal fistula seton drainage tube of several specifications for convenient ligation and measurement.

FIG. 3 is a schematic three-dimensional view of the anal fistula drainage tube with the snare according to the present invention, which is convenient for ligation and measurement.

Fig. 4 is a three-dimensional schematic view of the anal fistula seton drainage tube with convenient ligation and measurement and the thimble on the upper ring.

Figure 5 is a three-dimensional schematic view of the anal fistula seton drainage tube facilitating ligation and measurement and the auxiliary ring installing device of the utility model.

FIG. 6 is a three-dimensional section view of the parts of the anal fistula seton drainage tube, except the drainage tube, which is convenient for ligation and measurement.

FIG. 7 is a schematic view of the initial effect of the anal fistula drainage tube with convenient ligation and measurement, wherein the rubber ring is sleeved with the snare.

Fig. 8 is a schematic diagram of the ligation operation effect of the anal fistula seton drainage tube convenient for ligation and measurement.

FIG. 9 is a schematic view of the process of the anal fistula seton drainage tube of the present invention, wherein the rubber ring is sleeved with the snare.

FIG. 10 is a schematic perspective view of another anal fistula drainage tube with a thread hanging thereon for facilitating ligation and measurement.

Detailed Description

The present invention will be further described with reference to the following detailed description. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications can be made by those skilled in the art after reading the disclosure of the present invention, and such equivalents also fall within the scope of the appended claims.

The reference numerals and components referred to in the drawings are as follows:

1. drainage tube 2, snare 3, upper ring thimble

4. Auxiliary ring loading device 5, rubber ring 21 and ring section

22. Clamping section 23, groove 24, through hole

31. Connector 32, cone 41, holding section

42. Propelling section 43, stopping ring 44, vertebra tip

33. Cross conical structure 45. cross groove

Example 1

Please refer to fig. 1, fig. 1 is a schematic sectional view of each part of an anal fistula seton drainage tube convenient for ligation and measurement. An anal fistula seton drainage tube convenient for ligation and metering comprises a drainage tube 1, a snare 2, an upper ring thimble 3, an auxiliary upper ring device 4 and two rubber rings 5; please refer to fig. 2, fig. 2 is a perspective view of the anal fistula seton drainage tube with several specifications for convenient ligation and measurement. The drainage tube 1 is a hose structure which is made of medical latex materials and provided with scale marks on the surface, the two ends of the drainage tube 1 are subjected to smooth chamfering treatment, damage to skin passing through the drainage tube when the drainage tube passes through a fistula is avoided, the specification of the drainage tube is solid hoses with the diameters of 2mm and 3.5mm and hollow hoses with the diameters of 5mm and 7mm, and the wall thickness of the hollow hose is 2 mm; the middle point of the drainage tube 1 is set as zero scale, and scale marks are respectively set in the unit of 0.5cm and 1.0cm from the zero scale to the left and right; please refer to fig. 3, fig. 3 is a perspective view of the snare of the anal fistula seton drainage tube convenient for ligation and measurement. The snare 2 is a hollow tubular structure with two open ends and is made of medical PVC material; the snare 2 is provided with a loop section 21 and a clamping section 22; the ferrule section 21 is arranged at the end part of one end of the snare 2, and the outer diameter of the ferrule section is smaller than that of the snare 2; the clamping section 22 is arranged at the middle part of the snare 2, and the outer diameter of the clamping section is larger than that of the snare 2; symmetrical grooves 23 are formed in the cylindrical surface of the clamping section 22, the grooves 23 are communicated with the hollow structure in the clamping section, and a through hole 24 which penetrates through the clamping section 22 in the transverse direction is formed in the clamping section; the inner diameter of the clamping section 22 is larger than that of the ferrule section 21; please refer to fig. 4, fig. 4 is a perspective view of the top ring thimble of the anal fistula seton drainage tube convenient for ligation and measurement. The upper ring thimble 3 is made of medical PVC material, one end of the upper ring thimble is provided with a cylindrical connector 31, and the other end of the upper ring thimble is a cone 32; the outer diameter of the connector 31 is consistent with the inner diameter of the ferrule section 21, and the connector 31 is detachably connected with the ferrule section 21; please refer to fig. 5, fig. 5 is a perspective view of the anal fistula seton drainage tube for convenient ligation and measurement and the auxiliary ring-loading device of the present invention. The auxiliary ring installing device 4 is made of medical elastic PVC material and comprises a holding section 41 and a pushing section 42; the holding section 41 is of a cylindrical structure; the propelling section 42 is composed of four strip-shaped bodies which are orthogonally arranged and are not connected with each other, the opening size of the propelling section is adjustable, the lower end of the propelling section 42 is provided with a stopping ring 43 which protrudes out of the outer surface of the propelling section 42, the upper end part of the propelling section is fixedly connected with one end of the holding section 41, and the tail end of the propelling section 42 is provided with a cone tip 44; the rubber ring 5 is of an annular structure, has a small inner aperture and is made of a high-elasticity material.

Please refer to fig. 6 and 7; fig. 6 is the utility model relates to an anal fistula string of line drainage tube all parts solid sectioning schematic diagram except the drainage tube convenient to ligature, measurement, fig. 7 is the utility model relates to an anal fistula string of line drainage tube convenient to ligature, measurement the rubber circle cup joints the initial effect schematic diagram of snare. The utility model discloses a use method: sleeving the connecting head 31 of the upper thimble 3 into the ferrule section 21, sleeving the rubber ring 5 onto the tip end of the cone 32, aligning the cone tip 44 with the top end of the cone 32 of the upper thimble 3 by utilizing the cone tip 44 of the propelling section 42 of the auxiliary upper thimble 4, holding the holding section 41 to propel downwards until the rubber ring 5 is sleeved on the outer diameter of the ferrule section 21, and sequentially sleeving other rubber rings 5; please refer to fig. 8, fig. 8 is a schematic diagram of the ligation operation effect of the anal fistula seton drainage tube convenient for ligation and measurement. According to the actual situation, selecting the drainage tube 1 with the corresponding specification, carrying out anal fistula thread-hanging drainage operation by using a traditional treatment means, penetrating the drainage tube 1 from an external anal fistula opening, connecting and guiding the drainage tube 1 to the other end of the fistula opening by matching with a vascular clamp, aligning two ends of the drainage tube 1, penetrating the snare 2 from the loop section 21 together, placing the snare 2 at a ligation position, penetrating the drainage tube 1 through the through hole 24 by using a straight vascular clamp, preventing the drainage tube 1 from loosening, sliding two rubber rings 5 on the loop section 21 onto the drainage tube 1, fixing and ligating, and taking down the snare 2; when the ligation position needs to be changed, the rubber ring 5 sleeved on the drainage tube 1 can be slid to match with the scale on the drainage tube 1, so that the contraction distance condition can be clearly known when the drainage tube 1 is subjected to the suture tightening operation.

It should be noted that: the snare 2 is matched with the rubber ring 5, so that the operation procedure of ligation is greatly simplified, the problems that the existing knotting by using a traditional silk thread is easy to fall off and scatter and the operation is troublesome are solved, and the subsequent thread tightening operation is more convenient by the ligation of the rubber ring 5; one end of the upper ring thimble 3 is provided with a connector 31, the other end of the upper ring thimble 3 is of a conical structure, the connector 31 is conveniently connected with the snare 2, so that the rubber ring 5 can be sleeved on the loop section 21 along the upper ring thimble 3, and the conical structure enables the rubber ring 5 to smoothly expand an opening, thereby being more labor-saving and convenient; the rubber ring 5 is made of high-elasticity medical rubber material, has small inner aperture, is difficult to lose efficacy, has stable fastening effect, is difficult to slip and influences the ligation effect; the utility model is provided with the auxiliary ring loading device 4, which solves the problems of small inner aperture, large elasticity and difficult ring sleeving operation of the rubber ring 5; the auxiliary ring installing device 4 is provided with a propelling section 41 and a holding section 42, the propelling section 41 is four orthogonally arranged strip-shaped bodies which are not connected with each other, the tail end of the propelling section is provided with a conical tip 44, the conical tip 44 can be conveniently sleeved into the rubber ring 5 in an initial state, the four orthogonally arranged strip-shaped bodies which are not connected with each other are matched with the ring installing thimble 3 so that the opening of the rubber ring 5 can be more conveniently expanded, and the stopping ring 43 on the propelling section 42 can effectively prevent the rubber ring 5 from moving upwards so as to ensure that the rubber ring 5 can be smoothly pushed into the ring installing section 21; the drainage tube 1 comprises a plurality of specifications with different diameters, corresponding appropriate consumables are provided for different diseases, and the problem that the current thread hanging consumables cannot be selected with appropriate thickness is solved; the drainage tube 1 with the diameter of 5mm and 7mm adopts a hollow cylindrical structure, so that the flexibility of the drainage tube 1 is further ensured, and the operation is facilitated; the drainage tube 1 is provided with scale lines, so that the distance degree of the tightening line can be clearly mastered during subsequent tightening, the approximate length of a fistula tract can be ascertained, and a doctor can conveniently perform treatment and diagnosis; the drainage tube 1 is made of medical latex materials, so that the adaptability of a patient to the latex materials is high, and the pain of the patient during the thread hanging period can be relieved; the inner diameter of the clamping section 22 is larger than that of the ferrule section 21, so that the straight vessel forceps can clamp the drainage tube 1 through the through hole 24 on the straight vessel forceps, the movement of the snare is correspondingly limited by the straight vessel forceps, and the rubber ring 5 can be conveniently transferred onto the drainage tube 1; the snare 2, the upper ring thimble 3 and the auxiliary upper ring device 4 can be reused after being sterilized; the vascular clamps or straight vascular clamps referred to in this embodiment are available from the prior art or commercially available.

Example 2

Please refer to fig. 9, fig. 9 is a schematic view of another anal fistula seton drainage tube of the present invention, wherein the rubber ring is sleeved with the snare. An anal fistula seton drainage tube convenient for ligation and metering comprises a drainage tube 1 (not shown in the figure), a snare 2, an upper ring thimble 3, an auxiliary upper ring device 4 and a rubber ring 5; the drainage tube 1 is a hose structure which is made of medical latex materials and provided with scale marks on the surface, the two ends of the drainage tube 1 are subjected to smooth chamfering treatment, damage to skin passing through the drainage tube when the drainage tube passes through a fistula is avoided, the specification of the drainage tube is solid hoses with the diameters of 2mm and 3.5mm and hollow hoses with the diameters of 5mm and 7mm, and the wall thickness of the hollow hose is 2 mm; the middle point of the drainage tube 1 is set as zero scale, and scale marks are respectively set in the unit of 0.5cm and 1.0cm from the zero scale to the left and right; the snare 2 is a hollow tubular structure with two open ends and is made of medical PVC material; the snare 2 is provided with a loop section 21 and a clamping section 22; the ferrule section 21 is arranged at the end part of one end of the snare 2, and the outer diameter of the ferrule section is smaller than that of the snare 2; the clamping section 22 is arranged at the middle part of the snare 2, and the outer diameter of the clamping section is larger than that of the snare 2; symmetrical grooves 23 are formed in the cylindrical surface of the clamping section 22, the grooves 23 are communicated with the hollow structure in the clamping section, and a through hole 24 which penetrates through the clamping section 22 in the transverse direction is formed in the clamping section; the inner diameter of the clamping section 22 is larger than that of the ferrule section 21; the upper ring thimble 3 is made of medical PVC material, one end of the upper ring thimble is provided with a cylindrical connector 31, and the other end of the upper ring thimble is of a cross-shaped conical structure 33; the outer diameter of the connector 31 (not shown in the figure) is the same as the inner diameter of the ferrule section 21, and the connector 31 is detachably connected with the ferrule section 21; the auxiliary ring installing device 4 is made of medical PVC material and comprises a holding section 41 and a pushing section 42; the holding section 41 is of a cylindrical structure; the propelling section 42 is of a cylindrical structure with a cross groove 45, the lower end part of the propelling section 42 is provided with a stopping ring 43, the upper end part of the propelling section 42 is fixedly connected with one end of the holding section 41, and the diameter of the stopping ring 43 is larger than the outer diameters of the upper ring thimble 3 and the ferrule section 21; the rubber ring 5 is of an annular structure, has a small inner aperture and is made of a high-elasticity material. This embodiment 2 is substantially the same as embodiment 1 except that the structure of the cone 32 (not shown) is replaced with a cross-shaped cone structure 33; the structure of the propelling section 42 is changed into a column structure with a cross-shaped groove 45 corresponding to the cross-shaped conical structure 33, and the structural design of a conical tip 44 (not shown in the figure) is eliminated. It should be noted that the modification of the above structure does not affect the use efficiency, and the diameter of the stopping ring 43 is larger than the outer diameters of the upper ring thimble 3 and the collar segment 21, so as to ensure that the rubber ring 5 can be smoothly pushed into the collar segment 21. Part of the structure of the pusher section 42 is hidden in fig. 10 of this embodiment 2.

Example 3

Please refer to fig. 10, fig. 10 is a schematic perspective view of another anal fistula seton drainage tube snare convenient for ligation and measurement. This embodiment 3 is essentially the same as embodiment 1, except that both ends of the snare 2 are provided with loop sections 21. The increase of the number of the ring sections 21 does not affect the use effect of the utility model, and the rubber rings 5 (not shown in the figure) can be sleeved at both ends of the snare 2, thereby increasing the use flexibility.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and additions can be made without departing from the principles of the present invention, and these improvements and additions should also be regarded as the protection scope of the present invention.

Claims

1. An anal fistula seton drainage tube convenient for ligation and metering is characterized by comprising a drainage tube, a snare, an upper ring thimble, an auxiliary upper ring device and a plurality of rubber rings; the drainage tube is of a hose structure; the snare is a hollow tubular structure with two open ends; the snare is provided with a snare section and a clamping section; the ferrule section is arranged at the end part of the snare, and the outer diameter of the ferrule section is smaller than that of the snare; the clamping section is arranged at a position outside the ferrule section on the snare, and the outer diameter of the clamping section is larger than that of the snare; the cylindrical surface of the clamping section is provided with symmetrical grooves which are communicated with the hollow structure inside the clamping section, and a through hole which is transversely communicated is formed on the clamping section; the inner diameter of the clamping section is larger than that of the ferrule section; one end of the upper ring thimble is provided with a connector, and the other end of the upper ring thimble is of a conical structure; the connector is detachably connected with the ferrule section; the auxiliary ring feeding device comprises a holding section and a pushing section; the holding section is of a cylinder structure; the lower end of the propelling section is provided with a stopping ring, and the upper end of the propelling section is fixedly connected with one end of the holding section; the stopping ring protrudes out of the outer surface of the propelling section; the rubber ring is of an annular structure.

2. The anal fistula seton drainage tube convenient for ligation and measurement as claimed in claim 1, wherein the drainage tube comprises a plurality of specifications, and the diameters of the drainage tube comprise at least 2mm, 3.5mm, 5mm and 7 mm.

3. The anal fistula seton drainage tube convenient for ligation and measurement as claimed in claim 2, wherein the drainage tube with the diameter of 2mm and 3.5mm has a solid cylindrical structure; the diameter is 5mm, 7mm the drainage tube, its body is hollow cylinder structure.

4. The anal fistula seton drainage tube facilitating ligation and measurement according to claim 1, 2 or 3, wherein the drainage tube is provided with scale marks thereon.

5. The anal fistula seton drainage tube convenient for ligation and measurement according to claim 1, 2 or 3, wherein the drainage tube is made of medical latex material.

6. The anal fistula seton drainage tube convenient for ligation and metering as claimed in claim 1, wherein the connector is a cylinder, the outer diameter of the connector is consistent with the inner diameter of the collar segment, and the connector is connected with the collar segment in a matching manner.

7. The anal fistula seton drainage tube convenient for ligation and metering as claimed in claim 1, wherein the snare and the upper ring thimble are made of medical plastics; the inner aperture of the rubber ring is small, and the rubber ring is made of high-elasticity medical rubber materials.

8. The anal fistula seton drainage tube convenient for ligation and measurement as claimed in claim 1, wherein the propelling section is four orthogonally arranged unconnected strip-shaped bodies, the opening size of the propelling section is adjustable, and the tail end of the propelling section is provided with a vertebral tip.

9. The anal fistula seton drainage tube convenient for ligation and measurement as claimed in claim 1, wherein the other end of the upper ring thimble is also in a cross-shaped conical structure, correspondingly, the propelling section is in a cylindrical structure provided with a cross groove, and the cross groove is matched with the cross-shaped conical structure.