Biliary drainage tube and bile duct obstruction automatic identification system

Abstract

The present invention discloses a biliary drainage tube and an automatic identification system for biliary obstruction, and relates to the technical field of bile drainage tubes, including a T-shaped bile drainage tube, wherein the T-shaped bile drainage tube includes a drainage vertical tube and a drainage transverse tube vertically movably arranged at the end of the drainage vertical tube; the drainage vertical tube is arranged inside the common bile duct and is located near the original obstruction area, the drainage transverse tube located at the end of the drainage vertical tube is embedded in the common bile duct lumen, and a side section of the drainage vertical tube supports the original obstruction area of the common bile duct; the drainage transverse tube is connected to the drainage vertical tube, and an adjustment mechanism is provided on the drainage transverse tube for sliding adjustment at the end of the drainage vertical tube. In the present invention, the drainage transverse tube can be slidably adjusted at the end of the drainage vertical tube, reducing the size of the surgical opening on the common bile duct when it is inserted, reducing the pain of the patient, and the position of the drainage transverse tube can be adjusted based on the length of the original obstruction area, making it more convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of bile drainage tubes, in particular to a bile duct drainage tube and an automatic identification system for bile duct obstruction. Background Art

[0002] Biliary obstruction is a blockage in any section of the duct that drains bile from the liver, through the gallbladder, and into the intestines. If left untreated, this blockage can lead to serious complications, including severe infection. The most common causes of bile duct obstruction include: Gallstones. Gallstones are a common cause of bile duct obstruction. Gallstones can form when there's an imbalance in the chemistry of the gallbladder. If the gallstones are large enough, they can block the bile ducts as they pass through the biliary system. Biliary cancer refers to all cancers that develop within the bile duct system. The resulting tumors can block the bile ducts. Cancers from other parts of the body can also spread to the biliary system and cause obstruction. Damage to the gallbladder can sometimes lead to blockage due to injury during a medical procedure, such as gallbladder surgery or an endoscopy.

[0003] After surgery for biliary obstruction, a T-type drainage tube is usually placed to drain the bile, which usually takes 14-21 days. Placing a T-type drainage tube can drain bile, reduce the pressure in the bile duct, prevent increased intrabiliary pressure due to obstruction of bile excretion, and prevent bile peritonitis caused by bile leakage. It can also drain residual stones, so that residual stones in the bile duct, especially mud-like stones, can be discharged from the body through the T-tube, support the bile duct, prevent stenosis of the common bile duct incision scar, etc. Stones can also be removed or angiography can be performed through the T-tube.

[0004] For example, the patent with the authorization announcement number CN201642427U, the authorization announcement date 2010.11.24, and the name "Single-tube Stent Drainage Tube" includes a biliary stent tube and a T-shaped tube. The two ends of the biliary stent tube are connected and the side wall is provided with an insertion hole. The two ends of the horizontal tube of the T-shaped drainage tube are connected and placed inside the biliary stent tube. The vertical tube of the T-shaped tube passes through the insertion hole and is arranged outside the biliary stent tube.

[0005] Currently, when a T-tube is removed after surgery, angiography is performed through the tube to observe the situation in the bile duct and the presence of residual stones, thereby determining the optimal time to remove the T-tube. However, angiography can only reveal the morphology of the bile duct and larger stones (stones smaller than 4 mm are difficult to show due to the obstruction of the contrast agent). At the same time, the inner side of the bile duct in the surgical area is supported by the T-tube, and angiography cannot detect whether hyperplasia or edema occurs in the original obstruction area of the common bile duct after the T-tube is removed, thereby leading to bile duct stenosis. This can lead to adverse reactions after T-tube removal and even the need for a second operation, which is not conducive to postoperative recovery. Summary of the Invention

[0006] The purpose of the present invention is to provide a biliary drainage tube and an automatic identification system for biliary obstruction to solve the above-mentioned deficiencies in the prior art.

[0007] In order to achieve the above object, the present invention provides the following technical solution: a bile duct drainage tube, comprising a T-shaped bile drainage tube,

[0008] The T-shaped bile drainage tube includes a drainage vertical tube and a drainage horizontal tube vertically movably arranged at the end of the drainage vertical tube;

[0009] The vertical drainage tube is arranged inside the common bile duct at the proximal end of the original obstruction area, the horizontal drainage tube located at the end of the vertical drainage tube is embedded in the common bile duct lumen, and a side section of the vertical drainage tube supports the original obstruction area of the common bile duct;

[0010] The drainage horizontal pipe is communicated with the drainage vertical pipe, and an adjustment mechanism is provided on the drainage horizontal pipe for sliding adjustment of the drainage horizontal pipe at the end of the drainage vertical pipe.

[0011] As a further description of the above technical solution: the end of the drainage vertical pipe is provided with a connecting sleeve, the drainage horizontal pipe is slidably embedded in the connecting sleeve, the outer side of the drainage horizontal pipe is formed with a strip groove along its length direction, the middle section of the strip groove is connected to a connecting pipe, and the other end of the connecting pipe extends into the inner cavity of the drainage vertical pipe.

[0012] As a further description of the above technical solution: the adjustment mechanism includes a traction guide wire, one end of which is fixed at the end position of the strip groove through a connector, and the other end of the traction guide wire passes through the drainage vertical pipe along the strip groove and extends to the outside of the drainage vertical pipe.

[0013] As a further description of the above technical solution: one end of the connecting pipe is connected to the inner cavity of the drainage horizontal pipe, and the other end of the connecting pipe is connected to a piston joint, and the piston joint is slidably embedded in the drainage vertical pipe.

[0014] An automatic identification system for biliary obstruction, comprising the above-mentioned biliary drainage tube, further comprising a pressure detector and a data processing terminal arranged in the drainage transverse tube;

[0015] The pressure detector is used to collect a data set of internal pressure of the common bile duct when the drainage transverse duct supports the original obstruction area on the common bile duct and a data set of internal pressure of the common bile duct when there is no support;

[0016] The output end of the pressure detector is electrically connected to the input end of the data processing terminal, and the data processing terminal retrieves the data collected by the pressure detector for analysis to identify bile duct obstruction.

[0017] As a further description of the above technical solution: the pressure detector collects the following data set of the internal pressure of the common bile duct when the drainage transverse tube supports the original obstruction area on the common bile duct:

[0018] The pressure detector is placed in the lumen of the drainage transverse tube by installing a guide wire;

[0019] Then, after the patient eats, the internal pressure data set Uan in the common bile duct is collected in real time in a time sequence when the drainage transverse tube supports the original obstruction area on the common bile duct;

[0020] Uan∈{(Pa1, T1), (Pa2, T2)(Pa3, T3)...(Pan, Tn)}, where Pan represents the internal pressure value of the common bile duct (10) at time Tn after the patient eats when the drainage transverse tube (4) supports the original obstruction area (20) on the common bile duct (10).

[0021] As a further description of the above technical solution: the pressure detector collects the common bile duct internal pressure data set when the drainage transverse tube does not support the original obstruction area on the common bile duct, specifically:

[0022] The drainage transverse tube is pulled and adjusted by pulling the guidewire, so that the drainage transverse tube slides and adjusts on the connecting sleeve until one end of the drainage transverse tube moves away from the original obstruction area on the common bile duct and no longer supports the original obstruction area;

[0023] Then, after the patient eats, the common bile duct internal pressure data set Ubn is collected in real time in a time series when the drainage transverse tube does not support the original obstruction area on the common bile duct;

[0024] Ubn∈{(Pb1, T1), (Pb2, T2)(Pb3, T3)...(Pbn, Tn)}, where Pbn represents the internal pressure of the common bile duct at time Tn after the patient eats when the drainage transverse duct does not support the original obstruction area on the common bile duct.

[0025] As a further description of the above technical solution: the data processing terminal retrieves the data collected by the pressure detector for analysis to identify bile duct obstruction, specifically:

[0026] Retrieve the pressure data set Uan and the pressure data set Ubn, and identify the pressure data set Uan and the pressure data set Ubn;

[0027] Retrieve the rising segment data set Uam from the pressure data set Uan, Uan∈{(Pa1, T1), (Pa2, T2)(Pa3, T3)...(Pam, Tm)}, and Uam∈Uan;

[0028] Retrieve the rising segment data set Ubm from the pressure data set Ubn, Ubm∈{(Pb1, T1), (Pb2, T2)(Pb3, T3)...(Pbm, Tm)}, and Ubm∈Ubn;

[0029] The combined ascending segment data sets Uam and Ubm were compared and analyzed to achieve automatic identification of biliary obstruction.

[0030] As a further description of the above technical solution: the joint ascending segment data sets Uam and Ubm are compared and analyzed to achieve automatic identification of biliary obstruction. Specifically:

[0031] Based on the ascending segment data set Uam, the pressure rising trend coefficient Ka in the common bile duct when the original obstruction area on the common bile duct is supported is calculated;

[0032] Based on the ascending segment data set Ubm, the pressure rising trend coefficient Kb in the common bile duct when there is no support in the original obstruction area above the common bile duct is calculated;

[0033] Comparison of the pressure rise trend coefficients Ka and Kb can be used to identify whether biliary obstruction occurs when there is no support for the original obstruction area on the common bile duct.

[0034] The pressure rising trend coefficient Ka is calculated based on the rising section data set Uam:

[0035]

[0036] The pressure rising trend coefficient Kb is calculated based on the rising section data set Ubm as follows:

[0037]

[0038] As a further description of the above technical solution: comparing the pressure rising trend coefficients Ka and Kb to identify whether biliary obstruction occurs when there is no support for the original obstruction area on the common bile duct. Specifically, comparing the rising trend coefficients Ka and Kb, when Kb>Ka+Ki, where Ki is the normal rising trend change coefficient, it means that biliary obstruction occurs when there is no support for the original obstruction area on the common bile duct, and the data processing terminal starts to alarm.

[0039] In the above technical solution, the present invention provides a biliary drainage tube and a biliary obstruction automatic identification system, which have the following beneficial effects:

[0040] The drainage transverse tube in the biliary drainage tube can be slid and adjusted at the end of the drainage vertical tube, reducing the size of the surgical opening on the common bile duct during insertion, reducing the patient's pain, shortening the patient's recovery time, and the position of the drainage transverse tube can be adjusted based on the length of the original obstruction area, making it more convenient to use. The automatic identification system for biliary obstruction measures the internal pressure rising trend coefficient Ka of the common bile duct when the original obstruction area on the common bile duct is supported, and the internal pressure rising trend coefficient Kb of the common bile duct when the original obstruction area on the common bile duct is not supported, and compares and analyzes them. When the original obstruction area on the common bile duct has hyperplasia, edema, etc. after surgery, resulting in bile duct stenosis, the internal pressure rising trend coefficient Kb of the common bile duct will increase significantly when the original obstruction area on the common bile duct is not supported, thereby realizing automatic identification of biliary obstruction. When the original obstruction area on the common bile duct has hyperplasia, edema, etc. after surgery, resulting in bile duct stenosis, the T-tube can be used for operation and treatment, avoiding the risk of reoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0042] Figure 1 A schematic diagram of a biliary drainage tube installation state provided by an embodiment of the present invention;

[0043] Figure 2 A schematic diagram of a biliary drainage tube and a common bile duct installed in accordance with an embodiment of the present invention;

[0044] Figure 3 A schematic structural diagram of a biliary drainage tube provided in an embodiment of the present invention;

[0045] Figure 4 A schematic diagram of the overall structure of the drainage transverse pipe provided in an embodiment of the present invention;

[0046] Figure 5 A cross-sectional view of a biliary drainage tube provided in an embodiment of the present invention;

[0047] Figure 6 A schematic diagram of the connection between a pressure detector and a data processing terminal in an automatic identification system for biliary obstruction provided by an embodiment of the present invention.

[0048] Description of reference numerals:

[0049] 10. Common bile duct; 20. Original obstruction area; 30. Duodenum; 40. Liver; 1. T-type bile drainage tube; 2. Vertical drainage tube; 3. Connecting sleeve; 4. Horizontal drainage tube; 41. Strip groove; 42. Retraction guidewire; 43. Connecting tube; 44. Piston joint; 5. Pressure detector; 6. Data processing terminal. DETAILED DESCRIPTION

[0050] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0051] See also Figure 1-5 , the embodiment of the present invention provides a technical solution: a bile duct drainage tube, including a T-shaped bile drainage tube 1, specifically (such as Figure 1 As shown), the liver 40 secretes bile, which includes bile acids that can help fat digestion and absorption, as well as bilirubin that is not related to digestion. Bile secretion is continuous, but bile cannot flow into the duodenum 30 immediately after production. Normally, bile enters the gallbladder through the cystic duct, is concentrated and stored in the gallbladder, and when needed, under dietary stimulation, periodically enters the duodenum 30 through the common bile duct 10 to aid digestion. When bile duct obstruction occurs in the common bile duct 10, surgical treatment is required. After surgery, a T-shaped bile drainage tube 1 is placed in the common bile duct 10. The T-shaped bile drainage tube 1 includes a vertical drainage tube 2 and a horizontal drainage tube 4 vertically and movably arranged at the end of the vertical drainage tube 2; The end of the vertical drainage tube 2 is provided with a connecting sleeve 3, and the horizontal drainage tube 4 is slidably embedded in the connecting sleeve 3. The vertical drainage tube 2 is arranged inside the common bile duct 10 and is located proximal to the original obstruction area 20. Specifically, a surgical opening is opened on the common bile duct 10 on the side of the original obstruction area 20 close to the liver 40, and then the end of the vertical drainage tube 2 connected to the horizontal drainage tube 4 is inserted into the common bile duct through the surgical opening, that is, the horizontal drainage tube 4 located at the end of the vertical drainage tube 2 is embedded in the inner cavity of the common bile duct 10, and a side section of the vertical drainage tube 2 supports the original obstruction area 20 of the common bile duct 10; the bile is diverted by the horizontal drainage tube 4 being built into the common bile duct 10, so that the bile flows normally into the duodenum 30;

[0052] The drainage horizontal tube 4 is connected to the drainage vertical tube 2. A strip groove 41 is formed on the outer side of the drainage horizontal tube 4 along its length. A connecting tube 43 is connected to the middle section of the strip groove 41. The other end of the connecting tube 43 extends into the inner cavity of the drainage vertical tube 2. One end of the connecting tube 43 is connected to the inner cavity of the drainage horizontal tube 4. The other end of the connecting tube 43 is connected to a piston joint 44, and the piston joint 44 is slidably embedded in the drainage vertical tube 2.

[0053] The drainage horizontal tube 4 is provided with an adjustment mechanism for slidingly adjusting the drainage horizontal tube 4 at the end of the drainage vertical tube 2. The adjustment mechanism includes a traction guide wire 42. One end of the traction guide wire 42 is fixed at the end position of the strip groove 41 through a connector. The other end of the traction guide wire 42 passes through the strip groove 41 into the drainage vertical tube 2 and extends to the outside of the drainage vertical tube 2. Optionally, two traction guide wires 42 are provided. One end of the two traction guide wires 42 is respectively connected to the ends on both sides of the strip groove 41. The other ends of the two traction guide wires 42 extend along the strip groove 41 into the drainage vertical tube 2.

[0054] The present embodiment provides a bile drainage tube. Compared with the traditional integrated T-type drainage tube, the bile drainage tube is composed of a drainage vertical tube 2 and a drainage transverse tube 4. A connecting sleeve 3 is provided at the end of the drainage vertical tube 2, and the drainage transverse tube 4 is slidably embedded in the connecting sleeve 3. When the T-type bile drainage tube 1 is placed through the surgical opening on the common bile duct 10, the drainage transverse tube 4 can be slidably adjusted by pulling the guide wire 42 so that one end of the drainage transverse tube 4 is close to the drainage vertical tube 2, and then the drainage transverse tube 4 is close to the drainage vertical tube 2. The end of the vertical tube 2 is inserted into the inner cavity of the common bile duct 10 through the surgical opening on the common bile duct 10, and then the drainage transverse tube 4 is adjusted to slide in the opposite direction by pulling the guide wire 42, so that the drainage transverse tube 4 is slowly inserted into the inner cavity of the common bile duct 10, that is, the drainage transverse tube 4 in this application can be slidably adjusted at the end of the drainage vertical tube 2, reducing the insertion to the surgical opening on the common bile duct 10 and reducing the patient's pain. Further, the position of the drainage transverse tube 4 can be adjusted based on the length of the original obstruction area 20, which is more convenient to use.

[0055] See also Figure 6 , an embodiment of the present invention provides a technical solution: an automatic identification system for biliary obstruction, comprising the above-mentioned biliary drainage tube, the automatic identification system for biliary obstruction further comprising a pressure detector 5 and a data processing terminal 6 arranged in the drainage transverse tube 4;

[0056] The pressure detector 5 is used to collect a data set of the internal pressure of the common bile duct 10 when the drainage transverse tube 4 supports the original obstruction area 20 on the common bile duct 10 and a data set of the internal pressure of the common bile duct 10 when there is no support;

[0057] The output of the pressure detector 5 is electrically connected to the input of a data processing terminal 6, which retrieves and analyzes the data collected by the pressure detector 5 to identify biliary obstruction. The data processing terminal 6 is also used to identify the pressure data collected in real time by the pressure detector 5 and to generate an alarm when the pressure value exceeds a set rated value.

[0058] The pressure detector 5 collects the internal pressure data set of the common bile duct 10 when the drainage transverse tube 4 supports the original obstruction area 20 on the common bile duct 10, which is specifically:

[0059] The pressure detector 5 is placed in the inner cavity of the drainage transverse tube 4 by installing the guide wire 51;

[0060] Then, after the patient eats, the internal pressure data set Uan in the common bile duct 10 is collected in real time in a time sequence when the drainage transverse tube 4 supports the original obstruction area 20 on the common bile duct 10; specifically, the pressure data in the common bile duct 10 is collected once every one minute after the patient eats.

[0061] Uan∈{(Pa1, T1), (Pa2, T2), (Pa3, T3) ... (Pan, Tn)}, where Pan represents the pressure inside the common bile duct 10 at time Tn after the patient has eaten, when the drainage transverse tube 4 supports the previously obstructed region 20 on the common bile duct 10. Furthermore, Tn differs from Tn-1 by one minute.

[0062] The pressure detector 5 collects the internal pressure data set of the common bile duct 10 when the drainage transverse tube 4 does not support the original obstruction area 20 on the common bile duct 10, specifically:

[0063] The drainage transverse tube 4 is pulled and adjusted by pulling the guide wire 42, so that the drainage transverse tube 4 is slidably adjusted on the connecting sleeve 3 until one end of the drainage transverse tube 4 is removed from the original obstruction area 20 on the common bile duct 10 and no longer supports the original obstruction area 20;

[0064] Then, after the patient eats, the pressure data set Ubn inside the common bile duct 10 is collected in real time in a time sequence when the drainage transverse tube 4 does not support the original obstruction area 20 on the common bile duct 10; specifically, the pressure data in the common bile duct 10 is collected once every one minute after the patient eats.

[0065] Ubn∈{(Pb1, T1), (Pb2, T2)(Pb3, T3)...(Pbn, Tn)}, where Pbn represents the internal pressure value of the common bile duct 10 at time Tn after the patient has eaten when the drainage transverse tube 4 does not support the original obstruction area 20 on the common bile duct 10.

[0066] Furthermore, the data processing terminal retrieves the data collected by the pressure detector 5 and analyzes it to identify the biliary obstruction. Specifically:

[0067] Retrieve the pressure data set Uan and the pressure data set Ubn, and identify the pressure data set Uan and the pressure data set Ubn;

[0068] Retrieve the rising segment data set Uam from the pressure data set Uan, where Uan∈{(Pa1, T1), (Pa2, T2)(Pa3, T3)...(Pam, Tm)}, and Uam∈Uan, Pam>Pam-1;

[0069] Retrieve the rising segment data set Ubm from the pressure data set Ubn, Ubm∈{(Pb1, T1), (Pb2, T2)(Pb3, T3)...(Pbm, Tm)}, and Ubm∈Ubn, Pbm>Pbm-1,

[0070] The combined ascending segment data sets Uam and Ubm were compared and analyzed to achieve automatic identification of biliary obstruction.

[0071] The comparative analysis of the ascending segment data sets Uam and Ubm is used to automatically identify biliary obstruction. Specifically:

[0072] The pressure rising trend coefficient Ka in the common bile duct 10 when the original obstruction area 20 on the common bile duct 10 is supported is calculated based on the ascending segment data set Uam;

[0073] The calculation formula of Ka is:

[0074] Based on the ascending segment data set Ubm, the pressure rising trend coefficient Kb in the common bile duct 10 when the original obstruction area 20 on the common bile duct 10 is not supported is calculated;

[0075] The calculation formula of Kb is:

[0076] Compare the pressure rising trend coefficients Ka and Kb to identify and determine whether bile duct obstruction occurs when the original obstruction area 20 on the common bile duct 10 is not supported: compare the rising trend coefficients Ka and Kb, when Kb>Ka+Ki, where Ki is the normal rising trend change coefficient, the normal rising trend change coefficient Ki is calculated as follows: collect the pressure rising trend coefficients Ka in the common bile duct 10 when multiple drainage transverse tubes 4 support the original obstruction area 20 on the common bile duct 10, and sort the multiple groups of measured data in order of measurement time, calculate the difference between the multiple adjacent pressure rising trend coefficients Ka after sorting, and sum the differences and divide them by the number of differences to obtain the normal rising trend change coefficient Ki, when Kb>Ka+Ki, it means that bile duct obstruction occurs when the original obstruction area 20 on the common bile duct 10 is not supported, and the data processing terminal 6 starts to alarm.

[0077] It should be noted that, currently, the insertion of a biliary drainage tube after surgery can drain bile, reduce the pressure in the bile duct, and support the original obstruction area 20 in the common bile duct 10. However, after the T-tube is removed, hyperplasia, edema, etc. may occur in the original obstruction area 20 on the common bile duct 10 after surgery, thereby leading to bile duct stenosis. This application measures the rising trend coefficient Ka of the internal pressure of the common bile duct when the original obstruction area 20 on the common bile duct 10 is supported, and the rising trend coefficient Ka of the internal pressure of the common bile duct when the original obstruction area 20 on the common bile duct 10 is not supported. The trend coefficient Kb is calculated and compared and analyzed. When hyperplasia, edema and the like appear in the original obstruction area 20 on the common bile duct 10 after surgery, thereby leading to bile duct stenosis, the trend coefficient Kb of the internal pressure increase of the common bile duct will increase significantly when the original obstruction area 20 on the common bile duct 10 is not supported, thereby realizing automatic identification of bile duct obstruction. When hyperplasia, edema and the like appear in the original obstruction area 20 on the common bile duct 10 after surgery, thereby leading to bile duct stenosis, the T-tube can be used for operation and treatment, thereby avoiding the risk of reoperation.

[0078] Furthermore, a flow meter is provided in the drainage transverse tube 4 , which collects and collects the bile flow in the common bile duct 10 , and judges the effect of treatment and surgical recovery by the change of bile flow.

[0079] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. An automatic identification system for biliary obstruction, characterized in that: The bile duct drainage tube comprises a T-shaped bile drainage tube (1), wherein the T-shaped bile drainage tube (1) comprises a drainage vertical tube (2) and a drainage transverse tube (4) vertically movably arranged at the end of the drainage vertical tube (2); the drainage vertical tube (2) is arranged inside the common bile duct (10) and is located proximal to the original obstruction area (20); the drainage transverse tube (4) located at the end of the drainage vertical tube (2) is embedded in the inner cavity of the common bile duct (10), and a side section of the drainage vertical tube (2) supports the original obstruction area (20) of the common bile duct (10); the drainage transverse tube (4) is connected to the drainage vertical tube (2), and an adjustment mechanism is provided on the drainage transverse tube (4) for sliding adjustment of the drainage vertical tube (2) at the end of the drainage vertical tube (2); The drainage vertical pipe (2) is provided with a connecting sleeve (3) at its end, the drainage transverse pipe (4) is slidably embedded in the connecting sleeve (3), the outer side of the drainage transverse pipe (4) is formed with a strip groove (41) along its length direction, the middle section of the strip groove (41) is connected to a connecting pipe (43), and the other end of the connecting pipe (43) extends into the inner cavity of the drainage vertical pipe (2); The adjustment mechanism comprises a traction guide wire (42), one end of the traction guide wire (42) is fixed at the end position of the strip groove (41) through a connector, and the other end of the traction guide wire (42) penetrates into the drainage vertical pipe (2) along the strip groove (41) and extends to the outside of the drainage vertical pipe (2); The automatic identification system for bile duct obstruction further comprises a pressure detector (5) and a data processing terminal (6) arranged in the drainage transverse tube (4); the pressure detector (5) is used to collect a pressure data set inside the common bile duct (10) when the drainage transverse tube (4) supports the original obstruction area (20) on the common bile duct (10) and a pressure data set inside the common bile duct (10) when there is no support; the output end of the pressure detector (5) is electrically connected to the input end of the data processing terminal (6), and the data processing terminal retrieves the data collected by the pressure detector (5) for analysis to identify bile duct obstruction; The pressure detector (5) collects the internal pressure data set of the common bile duct (10) when the drainage transverse tube (4) supports the original obstruction area (20) on the common bile duct (10) specifically as follows: the pressure detector (5) is placed in the inner cavity of the drainage transverse tube (4) by installing the guide wire (51); then, after the patient eats, the internal pressure data set Uan of the common bile duct (10) when the drainage transverse tube (4) supports the original obstruction area (20) on the common bile duct (10) is collected in real time in a time sequence; Uan∈{(Pa1, T1), (Pa2, T2)(Pa3, T3)...(Pan, Tn)}, wherein Pan represents the internal pressure value of the common bile duct (10) at time Tn after the patient eats when the drainage transverse tube (4) supports the original obstruction area (20) on the common bile duct (10); The pressure detector (5) collects the internal pressure data set of the common bile duct (10) when the drainage transverse tube (4) does not support the original obstruction area (20) on the common bile duct (10). Specifically, the drainage transverse tube (4) is pulled and adjusted by the traction guide wire (42), so that the drainage transverse tube (4) is slid and adjusted on the connecting sleeve (3) until one end of the drainage transverse tube (4) is moved away from the original obstruction area (20) on the common bile duct (10) and no longer supports the original obstruction area (20); then, after the patient eats, The time sequence is used to collect the internal pressure data set Ubn of the common bile duct (10) when the drainage transverse tube (4) does not support the original obstruction area (20) on the common bile duct (10); Ubn∈{(Pb1, T1), (Pb2, T2)(Pb3, T3)...(Pbn, Tn), where Pbn represents the internal pressure value of the common bile duct (10) at time Tn after the patient eats when the drainage transverse tube (4) does not support the original obstruction area (20) on the common bile duct (10); The data processing terminal retrieves the data collected by the pressure detector (5) and analyzes it to identify the biliary obstruction. Specifically, the pressure data set Uan and the pressure data set Ubn are retrieved, and the pressure data set Uan and the pressure data set Ubn are identified; the rising segment data set Uam in the pressure data set Uan is retrieved, Uan∈{(Pa1, T1), (Pa2, T2)(Pa3, T3)...(Pam, Tm)}, and Uam∈Uan; the rising segment data set Ubm in the pressure data set Ubn is retrieved, Ubm∈{(Pb1, T1), (Pb2, T2)(Pb3, T3)...(Pbm, Tm)}, and Ubm∈Ubn; the rising segment data sets Uam and Ubm are jointly compared and analyzed to realize automatic identification of biliary obstruction; The joint ascending segment data set Uam and Ubm are compared and analyzed to realize automatic identification of bile duct obstruction. Specifically, the following steps are: calculating the pressure rising trend coefficient Ka in the common bile duct (10) when the original obstruction area (20) on the common bile duct (10) is supported based on the ascending segment data set Uam; calculating the pressure rising trend coefficient Kb in the common bile duct (10) when the original obstruction area (20) on the common bile duct (10) is not supported based on the ascending segment data set Ubm; comparing the pressure rising trend coefficients Ka and Kb to realize identification and determination of whether bile duct obstruction occurs when the original obstruction area (20) on the common bile duct (10) is not supported; The pressure rising trend coefficient Ka is calculated based on the rising section data set Uam: The pressure rising trend coefficient Kb is calculated based on the rising section data set Ubm as follows: Comparing the pressure rising trend coefficients Ka and Kb to identify whether bile duct obstruction occurs when there is no support for the original obstruction area (20) on the common bile duct (10) is specifically as follows: comparing the rising trend coefficients Ka and Kb Kb, when Kb>Ka+Ki, where Ki is the normal upward trend variation coefficient, it means that bile duct obstruction occurs when the original obstruction area (20) on the common bile duct (10) is not supported, and the data processing terminal (6) starts to alarm.

2. The automatic identification system for biliary obstruction according to claim 1, characterized in that: One end of the communicating tube (43) is in communication with the inner cavity of the drainage horizontal tube (4), and the other end of the communicating tube (43) is connected to a piston joint (44), and the piston joint (44) is slidably embedded in the drainage vertical tube (2).

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