CN113750353B - Novel pancreas indwelling drainage tube - Google Patents

Abstract

The invention provides a novel pancreas indwelling drainage tube, which comprises: the drainage tube comprises an extraction tube (2), an outer sleeve end (1) and an elastic silica gel sleeve (3), wherein one end of the extraction tube (2) is set to be a drainage end, and a plurality of drainage ports are formed in the drainage end; the outer sleeve end (1) comprises an outer sleeve (1-2) and an insertion end (1-1) arranged at the front end of the outer sleeve (1-2), the insertion end (1-1) is provided with a plurality of first drainage holes (1-1-3), the outer surface of the insertion end (1-1) is also provided with a plurality of first anti-skid elastic sheets (1-1-2), and the outer sleeve (1-2) is sleeved on the drainage end; the elastic silica gel sleeve (3) is sleeved on the eduction tube (2), the left end of the elastic silica gel sleeve is hermetically connected with the rear end of the outer sleeve (1-2), and the right end of the elastic silica gel sleeve is hermetically connected with the side wall of the eduction tube (2). The drainage tube can be prevented from falling off from the pancreatic duct in the using process, and the discomfort caused by the drainage tube when a patient moves is reduced as much as possible.

Description

A new type of indwelling drainage tube for pancreas

technical field

The invention relates to medical supplies, in particular to a novel pancreatic indwelling drainage tube.

Background technique

The pancreatic indwelling drainage tube is used for patients to insert into the pancreatic duct after pancreatic surgery to achieve drainage of pancreatic juice and drugs. Due to the movement of the patient, it is easy to cause the drainage tube to move, including the outward movement of the drainage end away from the pancreatic duct, the inward movement towards the pancreatic duct, and even the twisting at a certain angle, which will cause the drainage end of the drainage tube to form a direct contact with the pancreatic duct. The force will easily cause the drainage tube to fall off from the pancreatic duct, resulting in drainage failure. At the same time, the effect of the force of the drainage tube on the drainage end will also bring discomfort to the patient.

Contents of the invention

The purpose of the present invention is to overcome the above-mentioned problems in the prior art, and provide a novel pancreatic indwelling drainage tube, which can prevent the drainage tube from falling off from the pancreatic duct during use, and minimize the impact of the drainage tube when the patient moves. the discomfort caused.

The technical solution of the present invention is: a novel pancreatic indwelling drainage tube, comprising:

An outlet pipe, one end of which is set as a drainage end, and the drainage end is provided with a plurality of drainage ports;

The outer casing end includes an outer casing and an insertion end arranged at the front end of the outer casing. The insertion end is used for inserting into the pancreatic duct for pancreatic juice drainage. The insertion end is connected with the outer casing. The surface is also provided with a plurality of first anti-skid shrapnel, and the outer sleeve is sleeved on the drainage end;

The elastic silicone sleeve is sheathed on the lead-out tube, the left end of which is in sealing connection with the rear end of the outer tube, and the right end is in sealing connection with the side wall of the lead-out tube.

The outer surface of the above-mentioned outer sleeve is also provided with a plurality of second anti-slip shrapnel, the second anti-slip shrapnel is an elastic silicone layer covered on the side wall of the outer sleeve, wherein the edge of the elastic silicone layer is connected to the side wall of the outer sleeve, and in each elastic Air bags are arranged between the silica gel layer and the side wall of the outer tube, and each air bag is connected with the inflation channel arranged inside the side wall of the outer tube, and the inflation channel is connected with the inflation and deflation joint; the gas can be charged through the inflation and deflation joint. The airbag is inflated, so that the elastic silicone layer deforms and bulges, thereby clinging to the internal tissue of the human body and playing an anti-slip effect.

The above-mentioned first anti-slip shrapnel is also an elastic silica gel layer; the surfaces of the first anti-slip shrapnel elastic silica gel layer and the second anti-slip shrapnel elastic silica gel layer are provided with anti-slip lines or anti-slip protrusions.

The front end of the insertion end is set as a blunt mouth structure; the outer diameter of the outer sleeve gradually decreases from the middle to the front end until the outer diameter of the insertion end is equal to the outer diameter of the insertion end; The front end of the interior is set as a tapered space with a small front end and a large rear end, and the front end of the drainage end is also set as a tapered structure to match the tapered space at the front end of the outer sleeve; the plurality of drainage ports on the drainage end are distributed in A plurality of second drainage holes or a plurality of drainage slits on the side wall of the drainage end.

The above-mentioned elastic silicone sleeve has a bellows structure to achieve longer elastic stretching and elastic torsion functions.

An annular sealing ring is provided on the inner side wall of the rear end of the outer casing, and the lead-out pipe realizes sliding and sealing connection in the outer casing through the annular sealing ring.

The outer wall of the rear end of the insertion end is provided with a convex edge around its circumference, and a plurality of surgical needle suture positioning holes are arranged on the convex edge along its circumference.

The side wall of the elastic silicone sleeve is a double-layer structure, including an inner silica gel layer and an outer silica gel layer. A closed gap is formed between the inner silica gel layer and the outer silica gel layer. The right end of the outer silica gel layer is provided with an inlet only for air intake Air one-way valve, the left end of the outer silica gel layer is provided with an air outlet one-way valve only for air outlet, the air inlet one-way valve and the air outlet one-way valve are both connected to the closed gap, and the air outlet one-way valve is connected to the closed gap. The inflation and deflation joints are connected through a flexible conduit.

Beneficial effects of the present invention: the present invention provides a novel pancreatic indwelling drainage tube, which can prevent the drainage tube from falling off from the pancreatic duct during use, and minimize the discomfort caused by the drainage tube when the patient moves sense. Specific technical advantages include the following:

(1) During use, the patient's activities cause the outlet tube 2 to be subjected to force, so that when the outlet tube 2 moves back and forth (towards or away from the pancreatic duct), its drainage end can move forward and backward for a certain distance in the outer cannula 1-2 move, thereby playing a buffering role, avoiding the action force formed by the patient's activities on the extraction tube 2 directly acting on the pancreatic duct and the human tissue at the end of the pancreatic duct through the drainage end, causing the drainage end to fall off from the pancreatic duct. With the disappearance of the force, under the action of the restoring force of the elastic silicone sleeve, the lead-out tube 2 will return to its original normal position in the jacket end 1 again, and the cushioning effect provided by the elastic silicone sleeve can also prevent the lead-out end from moving Direct impact is uncomfortable for the patient.

(2) During use, the patient's activities cause the outlet tube 2 to be subject to rotational force (such as twisting the body), which may cause the outlet tube 2 to rotate to a certain extent, and the outlet tube 2 will be rotated at a certain angle in the outer sleeve end 1. Twisting, combined with a certain degree of elastic torsion of the elastic silicone sleeve, will make the rotational force buffered as much as possible, and will not be obviously applied to the jacket end 1, avoiding the torsion caused by the drainage tube at a certain angle in the prior art, The torsional force is directly applied to the end of the pancreatic duct through the drainage tube, causing the drainage tube to fall off. In the present invention, when the external torsional force disappears, the outlet tube 2 will rotate slowly again in the overcoat end 1 under the action of the torsion restoring force of the elastic silicone sleeve. Return to the original normal position.

(3) After the insertion end 1-1 of the overcoat end of the present invention is inserted into the pancreatic duct, the first anti-skid shrapnel 1-1-2 on the insertion end 1-1 can increase the friction between the insertion end 1-1 and the inner wall of the pancreatic duct, Thereby avoiding as much as possible that the insertion end 1-1 falls off from the pancreatic duct; in addition, when the present invention is implanted into the human body, the airbags under the second anti-skid shrapnel 4 on the outer cannula 1-2 can be inflated to a certain degree. The expansion and bulge can make close contact with the human tissue at one end of the pancreatic duct, thereby increasing the frictional bonding force between the human body tissue and the outer cannula 1-2, and at the same time, the frictional bonding force can also consume the force on the insertion end of the outlet tube 2. 1-1 forms a direct impact force, which is further beneficial to prevent the insertion end 1-1 from falling off from the pancreatic duct. Wherein the anti-slip lines or anti-slip protrusions provided on the second anti-slip shrapnel 4 can increase the friction between the outer sleeve end 1 and human tissue.

(4) The outer wall of the rear end of the insertion end 1-1 of the present invention is provided with a convex edge 8 around its circumference, and a plurality of surgical needle suture positioning holes 8-1 are provided on the convex edge 8 along its circumference, which is convenient for postoperative doctors to accurately Suture positioning when suturing the drainage tube to the affected area.

(5) The present invention can inflate the airbags 5 under the second anti-skid shrapnel 4 through the elastic silicone sleeve 3, utilize the characteristics of elastic expansion and contraction of the elastic silicone sleeve 3, and simultaneously play the role of inflating the airbag, eliminating the special need for inflation The troublesome operation of the device has achieved the effect of killing two birds with one stone.

Description of drawings

Fig. 1 is a schematic structural view of the present invention when it is not used for drainage (the second non-slip shrapnel is not deformed and raised at this time);

Fig. 2 is a schematic structural view of the present invention in normal drainage use (the second anti-skid shrapnel deforms and bulges at this time);

Fig. 3 is a structural schematic diagram of the elongation and deformation of the elastic silicone sleeve when the lead-out pipe of the present invention is subjected to backward pulling force and moves;

Fig. 4 is a structural schematic view of the compression deformation of the elastic silicone sleeve when the outlet pipe of the present invention is moved by forward thrust during use;

Fig. 5 is a structural schematic view of the normal length state when the elastic silicone sleeve of the present invention is a double-layer structure;

Fig. 6 is a schematic diagram of the structure of the elastic silicone sleeve of the present invention in a double-layer structure, its length being elongated and in an inhalation state.

Detailed ways

A specific embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Rear", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Axial", "Radial", "Circumferential" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the technical solution of the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, Constructed and operative in a particular orientation and therefore are not to be construed as limitations of the invention.

Referring to Fig. 1-Fig. 5, the embodiment of the present invention provides a new type of indwelling drainage tube for pancreas, including: an outlet tube 2, an overcoat end 1, and an elastic silicone sheath 3, etc., wherein one end of the outlet tube 2 is set as a drainage end, and the other end is It is used to communicate with internal drainage or external drainage. The drainage end is provided with a plurality of drainage ports; the outer sleeve end 1 includes an outer sleeve 1-2 and an insertion end 1-1 arranged at the front end of the outer sleeve 1-2. The insertion end 1- 1 is used to insert the pancreatic duct for drainage of pancreatic juice, the insertion end 1-1 communicates with the outer cannula 1-2, and the insertion end 1-1 is provided with a plurality of first drainage holes 1-1-3 for introducing pancreatic juice, The outer surface of the insertion end 1-1 is also provided with a plurality of first anti-slip shrapnels 1-1-2, and the first drainage holes 1-1-3 are all arranged between the first anti-slip shrapnels 1-1-2. The tube 1-2 is sheathed on the drainage end; in use, when the insertion end 1-1 of the overcoat end is inserted into the pancreatic duct, the first anti-slip shrapnel 1-1-2 on the insertion end 1-1 can increase the -1 and the inner wall of the pancreatic duct, so as to prevent the insertion end 1-1 from falling off from the pancreatic duct; The rear end of 2 is in sealing connection, and the right end is in sealing connection with the side wall of the outlet pipe 2. When the present invention is used in the human body, as the patient moves, the outlet tube 2 will be subjected to force, so that when the outlet tube 2 moves back and forth (towards or away from the pancreatic duct), its drainage end can be carried out in the outer tube 1-2. Move back and forth for a certain distance, thereby playing a buffering role, preventing the force formed by the patient's activities on the outlet tube 2 from directly acting on the pancreatic duct and the human tissue at the end of the pancreatic duct through the drainage end, causing the drainage end to fall off from the pancreatic duct, and at the same time Invention With the disappearance of the external force, under the action of the restoring force of the elastic silicone sleeve, the lead-out tube 2 will return to the original normal position in the jacket end 1 again, and the buffering effect provided by the elastic silicone sleeve can prevent the lead-out tube 2 from moving at the same time When the direct impact of its leading end brings discomfort to the patient. In addition, the patient's activities may also cause the outlet tube 2 to be subjected to a rotational force (such as twisting the body), which will cause the outlet tube 2 to rotate to a certain extent, and the outlet tube 2 will be twisted at a certain angle in the overcoat end 1. A certain degree of elastic torsion of the elastic silicone sleeve will buffer the rotational force as much as possible, and will not be obviously applied to the jacket end 1, avoiding the torsion at a certain angle caused by the drainage tube in the prior art, and directly passing through the drainage tube The torsional force is applied to the end of the pancreatic duct, causing the drainage tube to fall off. In the present invention, when the external torsional force disappears, under the action of the torsion restoring force of the elastic silicone sheath, the outlet tube 2 will rotate again in the outer sheath end 1 and slowly return to the original normal state. Location.

Further, the outer surface of the outer sleeve 1-2 is also provided with a plurality of second anti-slip shrapnels 4, the second anti-slip shrapnel 4 is an elastic silicone layer covering the side wall of the outer sleeve 1-2, wherein the elastic silicone layer The edge is connected with the side wall of the outer tube 1-2, and an air bag 5 is arranged between each elastic silicone layer and the side wall of the outer tube 1-2, and each air bag 5 is connected to the inflation channel arranged inside the side wall of the outer tube 1-2 6 are connected, and the inflation channel 6 is connected with the inflation and deflation joint 7; filling the gas through the inflation and deflation joint 7 can make the air bag 5 expand, so that the elastic silica gel layer is deformed and raised, so that it is close to the internal tissue of the human body and plays a role Anti-slip effect. When the present invention is implanted into the human body, the airbags under the second anti-skid shrapnel 4 on the outer cannula 1-2 can be inflated to a certain degree after being inflated, and can be in close contact with the human tissue at one end of the pancreatic duct, thereby Increase the frictional bonding force between the human body tissue and the outer sleeve 1-2, and at the same time, the frictional bonding force can also consume the force that directly impacts the insertion end 1-1 when the outlet tube 2 is stressed, which is further beneficial to prevent the insertion end 1 from -1 detached from the pancreatic duct. Wherein the anti-slip lines or anti-slip protrusions provided on the second anti-slip shrapnel 4 can significantly increase the friction between the outer sleeve end 1 and human tissue. In this embodiment, each airbag 5 can be inflated without using an additional inflation device, and the structure of the elastic silicone sleeve 3 can be modified to have the function of inflating each airbag 5. Specifically, referring to Fig. 5, the elastic silicone The side wall of the cover 3 is made into a double-layer structure, that is, the elastic silicone cover 3 includes an inner silicone layer 3-2 and an outer silicone layer 3-1, and the right ends of the inner silicone layer 3-2 and the outer silicone layer 3-1 can be sealed and fixed. It is connected to the annular connection edge 10 , and the annular connection edge 10 is arranged on the outlet pipe 2 around the circumference of the outlet pipe 2 . A closed gap 3-3 is formed between the inner silica gel layer 3-2 and the outer silica gel layer 3-1, and the right end of the outer silica gel layer 3-1 is provided with an air intake check valve 11 only for air intake. The one-way valve 11 is in communication with the closed gap 3-3 (wherein the intake one-way valve has the function of closing its airflow conduction), and the left end of the outer silica gel layer 3-1 is provided with an air-out one-way valve only for air-out 12 (wherein the air outlet check valve has the function of closing its air flow conduction), the outlet check valve 12 is also connected with the closed gap 3-3, and the outlet check valve 12 and the inflation and deflation joint 7 pass through A flexible conduit 13 is connected. When in use, after the insertion end 1-1 of this embodiment is inserted on the pancreatic duct, and the outer cannula 1-2 is placed at a suitable human tissue, at this moment, one hand fixes the outer cannula 1-2 At the rear end, keep the outer tube 1-2 still, hold the left end of the lead-out tube 2 where it connects with the elastic silicone sleeve 3 with the other hand, and gently push and pull the lead-out tube 2 back and forth, so that the elastic silicone sleeve 3 is pulled several times length and compression, as shown in Figure 6, when the elastic silicone sleeve 3 is elongated, the closed gap 3-3 between the inner silicone layer 3-2 and the outer silicone layer 3-1 becomes larger, forming an air suction cavity , gas will be inhaled from the intake check valve 11 into the suction cavity, and when the elastic silicone sleeve 3 is compressed, the gas in the suction cavity will pass through the discharge check valve 12, the flexible conduit 13, the filling The deflation joint 7 and the inflation channel 6 are filled into each airbag 5, so that each airbag 5 expands. After each airbag 5 expands to a suitable volume, each second anti-slip shrapnel 4 is close to the human tissue, and then the air outlet check valve is closed. , when the elastic silicone sleeve 3 returns to its normal length under the action of its elastic force (as shown in Figure 5), then close the air intake one-way valve. At this time, the entire drainage end is fixed in the human tissue, and the drainage needs to be taken out later. When the tube is used, it is only necessary to disconnect the connection between the flexible catheter and the inflation and deflation joint 7 or directly cut the flexible catheter to automatically discharge the gas from each air bag 5, so that the outer tube 1-2 is no longer tightly combined with the human tissue. Thereby, it is convenient to take out the drainage end of the drainage tube. The double-layer elastic silicone sleeve 3 of this embodiment not only plays a corresponding buffering role, but also utilizes its elastic expansion and contraction characteristics to inflate the airbag, and achieves the effect of killing two birds with one stone, eliminating the need for a special inflator. Trouble operate.

Further, the first anti-slip shrapnel 1-1-2 is also an elastic silica gel layer, which has good elasticity and friction in contact with the human body; the elastic silica gel layer of the first anti-slip shrapnel 1-1-2, the second anti-slip elastic The surface of the elastic silicone layer of the shrapnel 4 is provided with anti-slip lines or anti-slip protrusions, which can further strengthen the friction with human tissues.

Further, the front end 1-1-1 of the insertion end 1-1 is set as a blunt mouth structure, which facilitates insertion into the pancreatic duct without damaging the inner wall of the pancreatic duct; the outer cannula 1-2 starts from the middle to In the direction of its front end, its outer diameter gradually decreases until the outer diameter at the junction with the insertion end 1-1 is equal to the outer diameter of the insertion end 1-1. It is possible to avoid the greater extrusion pressure caused by the outer edge of its front end to the human tissue, and it can also increase the contact force with the human tissue when moving forward; Large tapered space at the end, the front end of the drainage end is also set to a tapered structure to match the tapered space of the inner front end of the outer sleeve 1-2; at least one drainage port is set on the end of the drainage port (this drainage port directly and The pancreatic juice outlet at the rear end of the insertion end 1-1 is directly opposite), and the multiple drainage ports on the drainage end are multiple second drainage holes 2-1 or multiple drainage slits 2-2 distributed on the side wall of the drainage end.

Further, the elastic silicone sleeve 3 is a bellows structure to achieve longer elastic stretching and elastic torsion functions.

Further, an annular sealing ring 9 is provided on the inner side wall of the rear end of the outer casing 1-2, and the outlet tube 2 is connected in a sliding and sealed manner in the outer casing 1-2 through the annular sealing ring 9, so as to prevent pancreatic juice from entering the elastic silicone sleeve 3 and the outlet pipe 2.

Further, the outer wall of the rear end of the insertion end 1-1 is provided with a convex edge 8 around its circumference, and a plurality of surgical needle suture positioning holes 8-1 are arranged on the convex edge 8 along its circumference, which is convenient for postoperative doctors to accurately The drainage tube is sutured to the affected area, and the convex edge 8 can also play a certain role in limiting the insertion of the insertion end.

To sum up, the present invention provides a new type of pancreatic indwelling drainage tube, which can prevent the drainage tube from falling off from the pancreatic duct during use, and minimize the discomfort caused by the drainage tube when the patient moves. . Specific technical advantages include the following:

(1) During use, the patient's activities cause the outlet tube 2 to be subjected to force, so that when the outlet tube 2 moves back and forth (towards or away from the pancreatic duct), its drainage end can move forward and backward for a certain distance in the outer cannula 1-2 move, thereby playing a buffering role, avoiding the action force formed by the patient's activities on the extraction tube 2 directly acting on the pancreatic duct and the human tissue at the end of the pancreatic duct through the drainage end, causing the drainage end to fall off from the pancreatic duct. With the disappearance of the force, under the action of the restoring force of the elastic silicone sleeve, the lead-out tube 2 will return to its original normal position in the jacket end 1 again, and the cushioning effect provided by the elastic silicone sleeve can also prevent the lead-out end from moving Direct impact is uncomfortable for the patient.

(2) During use, the patient's activities cause the outlet tube 2 to be subject to rotational force (such as twisting the body), which may cause the outlet tube 2 to rotate to a certain extent, and the outlet tube 2 will be rotated at a certain angle in the outer sleeve end 1. Twisting, combined with a certain degree of elastic torsion of the elastic silicone sleeve, will make the rotational force buffered as much as possible, and will not be obviously applied to the jacket end 1, avoiding the torsion caused by the drainage tube at a certain angle in the prior art, The torsional force is directly applied to the end of the pancreatic duct through the drainage tube, causing the drainage tube to fall off. In the present invention, when the external torsional force disappears, the outlet tube 2 will rotate slowly again in the overcoat end 1 under the action of the torsion restoring force of the elastic silicone sleeve. Return to the original normal position.

(3) After the insertion end 1-1 of the overcoat end of the present invention is inserted into the pancreatic duct, the first anti-skid shrapnel 1-1-2 on the insertion end 1-1 can increase the friction between the insertion end 1-1 and the inner wall of the pancreatic duct, Thereby avoiding as much as possible that the insertion end 1-1 falls off from the pancreatic duct; in addition, when the present invention is implanted into the human body, the airbags under the second anti-skid shrapnel 4 on the outer cannula 1-2 can be inflated to a certain degree. The expansion and bulge can make close contact with the human tissue at one end of the pancreatic duct, thereby increasing the frictional bonding force between the human body tissue and the outer cannula 1-2, and at the same time, the frictional bonding force can also consume the force on the insertion end of the outlet tube 2. 1-1 forms a direct impact force, which is further beneficial to prevent the insertion end 1-1 from falling off from the pancreatic duct. Wherein the anti-slip lines or anti-slip protrusions provided on the second anti-slip shrapnel 4 can increase the friction between the outer sleeve end 1 and human tissue.

(4) The outer wall of the rear end of the insertion end 1-1 of the present invention is provided with a convex edge 8 around its circumference, and a plurality of surgical needle suture positioning holes 8-1 are provided on the convex edge 8 along its circumference, which is convenient for postoperative doctors to accurately Suture positioning when suturing the drainage tube to the affected area.

(5) The present invention can inflate the airbags 5 under the second anti-skid shrapnel 4 through the elastic silicone sleeve 3, utilize the characteristics of elastic expansion and contraction of the elastic silicone sleeve 3, and simultaneously play the role of inflating the airbag, eliminating the special need for inflation The troublesome operation of the device has achieved the effect of killing two birds with one stone.

The above disclosures are only a few specific embodiments of the present invention, however, the embodiments of the present invention are not limited thereto, and any changes conceivable by those skilled in the art shall fall within the protection scope of the present invention.

Claims (5)

1. A novel pancreatic indwelling drainage tube, characterized in that it comprises: One end of the outlet pipe (2) is set as a drainage end, and a plurality of drainage ports are arranged on the drainage end; The outer casing end (1), including the outer casing (1-2) and the insertion end (1-1) arranged at the front end of the outer casing (1-2), the insertion end (1-1) is used to insert the pancreatic duct for pancreatic juice drainage, The insertion end (1-1) communicates with the outer sleeve (1-2), and the insertion end (1-1) is provided with a plurality of first drainage holes (1-1-3), and the insertion end (1-1) The outer surface is also provided with a plurality of first anti-slip shrapnels (1-1-2), and the outer sleeve (1-2) is sleeved on the drainage end; the outer surface of the outer sleeve (1-2) is also A plurality of second anti-skid shrapnels (4) are provided, and the second anti-slip shrapnel (4) is an elastic silicone layer covered on the side wall of the outer sleeve (1-2), wherein the edge of the elastic silicone layer is in contact with the outer sleeve (1-2). ) side walls, and air bags (5) are arranged between each elastic silicone layer and the side wall of the outer tube (1-2), and each air bag (5) is connected to the inner side wall of the outer tube (1-2). The inflation channel (6) is connected, and the inflation channel (6) is connected with the inflation and deflation joint (7); filling gas through the inflation and deflation joint (7) can make the air bag (5) expand, so that the elastic silica gel layer Deformed and raised, so as to cling to the internal tissues of the human body and play an anti-slip effect; The elastic silicone sleeve (3) is sleeved on the outlet pipe (2), the left end thereof is sealed and connected to the rear end of the outer casing (1-2), and the right end is sealed and connected to the side wall of the outlet pipe (2); The elastic silicone sleeve (3) is a bellows structure to achieve longer elastic stretching and elastic torsion functions; the side wall of the elastic silicone sleeve (3) is a double-layer structure, including an inner silicone layer (3-2 ) and the outer silica gel layer (3-1), a closed gap (3-3) is formed between the inner silica gel layer (3-2) and the outer silica gel layer (3-1), and the outer silica gel layer (3-1) The right end is provided with the air intake check valve (11) that is only used for air intake, and the left end of the outer silica gel layer is provided with the air outlet check valve (12) that is only used for air outlet. The one-way valves (12) are all in communication with the closed gap (3-3), and the air outlet one-way valve (12) is connected with the inflation and deflation joint (7) through a flexible conduit (13). 2. A kind of novel pancreatic indwelling drainage tube as claimed in claim 1, characterized in that, said first anti-slip shrapnel (1-1-2) is also an elastic silica gel layer; said first anti-slip shrapnel (1-1 -2) The elastic silicone layer and the second anti-skid shrapnel (4) The surface of the elastic silicone layer is provided with anti-slip lines or anti-slip protrusions. 3. A novel pancreatic indwelling drainage tube as claimed in claim 1, characterized in that, the front end (1-1-1) of the insertion end (1-1) is set as a blunt mouth structure; (1-2) From the middle to its front end, its outer diameter gradually decreases until the outer diameter of the junction with the insertion end (1-1) is equal to the outer diameter of the insertion end (1-1); The front end inside the pipe (1-2) is set as a tapered space with a small front end and a large rear end, and the front end of the drainage end is also set as a tapered structure to match the tapered space at the front end inside the outer casing (1-2); The multiple drainage ports on the drainage end are multiple second drainage holes (2-1) or multiple drainage slits (2-2) distributed on the side wall of the drainage end. 4. A kind of novel pancreatic indwelling drainage tube as claimed in claim 1, is characterized in that, the inner side wall of the rear end of the outer casing (1-2) is provided with an annular sealing ring (9), and the outlet tube (2 ) through the annular sealing ring (9) in the outer casing (1-2) to achieve a sliding sealing connection. 5. A novel pancreatic indwelling drainage tube as claimed in claim 1, characterized in that, the outer wall of the rear end of the insertion end (1-1) is provided with a convex edge (8) around its circumference, and the convex edge (8) is provided with a plurality of surgical needle suture positioning holes (8-1) along its circumference.

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