CN108030996B - Integrated biliary self-disengagement internal drainage device - Google Patents

Abstract

The invention discloses an integrated biliary tract self-releasing internal drainage device, which comprises an internal drainage pipe, wherein one end of the internal drainage pipe is provided with a drainage channel for draining bile; the internal drainage tube is provided with a fixing structure for preventing the internal drainage tube from entering duodenum from the common bile duct; the internal drainage tube is provided with a self-releasing pulling structure for pulling the internal drainage tube to enter the intestinal tract through the duodenum. The integrated biliary tract self-detachment and internal drainage device can be fixed in the biliary tract, integrates drainage of bile and automatic detachment from the biliary tract, effectively drains the bile, avoids bile loss and is beneficial to recovery of patients.

Description

Integrated biliary self-disengagement internal drainage device

technical field

The invention relates to the technical field of medical devices, in particular to an integrated bile duct self-detachment internal drainage device applied to patients who need temporary common bile duct internal drainage after clinical laparoscopic and open choledocholithiasis operations.

Background technique

In the prior art, patients with acute inflammation or jaundice after choledocholithiasis surgery generally have to indwell a "T"-type drainage tube to drain the bile duct. The so-called external drainage has the following disadvantages: patients usually lose hundreds of milliliters of bile every day, which has a certain impact on normal physiology and also affects the patient's postoperative recovery; the local stimulation of the "T" tube can cause epigastric discomfort. and inconvenient activities, increase the pain of the patient and affect the postoperative recovery; it takes about 1 month to remove the "T" tube after the sinus tract of the "T" tube is formed firmly. There have been reports of adverse bile leakage.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the above problems existing in the prior art, and to provide an integrated bile duct self-detachment internal drainage device, which can be fixed in the bile duct, integrates bile drainage and automatic separation from the bile duct, effectively drains bile, and avoids bile drainage. Lost, it is conducive to the recovery of the patient.

In order to achieve the above purpose of the present invention, the present invention provides an integrated bile duct self-detachment internal drainage device, comprising an inner drainage tube, wherein one end of the inner drainage tube is provided with a drainage channel for bile drainage; the inner drainage tube is provided with a drainage channel for bile drainage; A fixing structure for preventing the inner drainage tube from entering the duodenum from the common bile duct is provided on the upper surface; a self-detaching pulling structure for pulling the inner drainage tube into the intestinal tract through the duodenum is arranged on the inner drainage tube.

Wherein, the drainage channel includes: a drainage groove opened in the center of the inner drainage pipe and extending along its axial direction; a drainage hole opened on the side wall of the inner drainage pipe and communicated with the drainage groove.

Wherein, the fixing structure includes: a water injection channel arranged at the other end of the inner drainage pipe, the water injection port of which is opened on the end face of the inner drainage pipe; Water bladder.

Preferably, the first water bladder is a retractable water bladder made of elastic material.

Further, the fixing structure further includes a water injection assembly for injecting water into the water injection channel.

Preferably, the water injection assembly comprises: a syringe; a hose detachably connected and communicated with the nipple of the syringe; a hollow needle detachably installed at the end of the hose.

Wherein, the water injection channel extends along the axial direction of the inner drainage pipe, and the water outlet is opened on the side wall of the inner drainage pipe.

Preferably, the water injection channel comprises: a water injection groove opened at the other end of the inner drainage pipe and extending along the direction of the central axis of the inner drainage pipe; a water injection groove opened on the inner drainage pipe and located beside the water injection groove and connected to the water injection groove The communicating pipe extends along the direction parallel to the central axis of the inner drainage pipe; wherein, the water outlet is communicated with the communicating pipe.

Wherein, the self-detaching pulling structure includes: a water diversion channel arranged on the inner drainage tube and communicated with the first water bladder; a second water channel sleeved on the outer wall of the inner drainage tube and communicated with the water diversion channel bag.

Preferably, the second water bladder is a soft water bladder made of inelastic material and having a certain water storage cavity.

Wherein, the water diversion channel extends along the axial direction of the inner drainage tube, and the water outlet is opened on the side wall of the inner drainage tube.

Preferably, the diameter of the water diversion channel is smaller than the diameter of the water injection channel.

Preferably, the water injection port of the water injection channel is provided with a blocking member that can self-rebound to block the water injection port.

Preferably, a first groove is formed around the outer wall of the inner drainage tube, and the first water bladder is arranged in the first groove.

Preferably, a second groove or a boss is encircled on the outer wall of the inner drainage tube, and the second water bladder is arranged in the second groove or outside the boss.

Compared with the prior art, the integrated bile duct self-detachment internal drainage device of the embodiment of the present invention has the following advantages:

1. The integrated bile duct self-detachment inner drainage device of the present embodiment integrates the functions of draining bile, fixing the inner drainage tube in the bile duct, and automatically separating the inner drainage tube from the bile duct. The structure and principle are simple, easy to operate and use, and effective drainage. Bile, avoid bile loss, and avoid the discomfort caused by the use of "T"-shaped tubes in the prior art.

2. The integrated bile duct self-detachment inner drainage device of this embodiment is provided with a fixed structure and a self-detachment pulling structure on the inner drainage tube, so that the inner drainage tube can be fixed on the common bile duct, and can also be automatically discharged from the common bile duct. Intestinal, avoiding the risk of bile leakage in the process of pulling out the "T"-shaped tube in the prior art, reducing the pain of the patient, and facilitating the early recovery of the patient.

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Description of drawings

1 is a half-section perspective view of an integrated bile duct self-detachment internal drainage device according to an embodiment of the present invention;

2 is a half-section view of a drainage tube in an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of an injection assembly according to an embodiment of the present invention.

Detailed ways

As shown in FIG. 1, it is a half-section perspective view of an integrated bile duct self-detachment internal drainage device provided in an embodiment of the present invention, FIG. 2 is a half-section view of an inner drainage tube in an embodiment of the present invention, and FIG. 3 is a water injection according to an embodiment of the present invention. Schematic diagram of the structure of the component.

As can be seen from the figure, the integrated bile duct self-detachment internal drainage device according to the embodiment of the present invention includes an inner drainage tube 1 for being placed in the bile duct: one end of the inner drainage tube 1 is provided with a drainage channel for bile drainage; the inner drainage tube 1 is provided with a fixing structure for preventing the inner drainage tube from entering the duodenum from the common bile duct; the inner drainage tube 1 is provided with a self-detaching pulling structure for pulling the inner drainage tube into the intestinal tract through the duodenum.

Specifically, the drainage tube in this embodiment is a cylindrical tube with a diameter of about 3 mm and a length of about 7 cm, and a drainage channel for bile drainage is set at one end of the drainage tube. As shown in FIG. 1 and FIG. 2 , the drainage channel in this embodiment includes : the drainage groove 5 opened in the center of the inner drainage pipe 1 and extending along the direction of its central axis, the diameter of the drainage groove 5 is about 1 mm, and the initial end of the drainage groove 5 is opened on the end face of one end of the inner drainage pipe 1 (this end face can be called It is the end of the inner drainage tube), and the terminating end is about 1cm away from the end face of the other end of the inner drainage tube 1 (this end face can be called the head of the inner drainage tube); its opening is opened on the side wall of the inner drainage tube 1 and is connected with the drainage tube The drainage hole 4 communicated with the groove 5. Among them, the drainage holes 4 are elliptical holes or oval, and the long axis of the elliptical holes or ovals is parallel to the axial direction of the inner drainage tube. When designing, the number of drainage holes 4 can be determined according to the actual situation. Size, preferably, this embodiment adopts three drainage holes 4 .

Wherein, the internal drainage tube 1 of this embodiment is fixed at the connection between the common bile duct and the duodenum through a fixed structure arranged on it. Preferably, the fixed structure includes: a water injection channel set at the other end of the internal drainage tube 1 , the water injection port is opened on the end face of the other end of the inner drainage pipe 1; the first water bladder 8 is sleeved on the outer wall of the inner drainage pipe 1 and communicated with the water outlet of the water injection channel. In addition, a water injection assembly for injecting water into the water injection channel is also included.

Wherein, the water injection channel extends along the axial direction of the inner drainage pipe 1 , and the water outlet is opened on the side wall of the inner drainage pipe 1 . Preferably, the water injection channel includes: a water injection groove 2 opened at the other end of the inner drainage pipe 1 and extending along the direction of the central axis of the inner drainage pipe 1, with a diameter of about 1.5 mm and a length of about 0.5 cm, respectively provided with the drainage groove 5 The two ends of the inner drainage pipe 1 are not connected; the communication pipes 3 located on the side of the water injection groove 2 and connected with the water injection groove 2 are opened on the inner drainage pipe 1 along the direction parallel to the central axis of the inner drainage pipe 1. The extension is about 1mm in diameter; wherein, the water injection port is located at the starting end of the water injection tank 2, one end of the communication pipe 3 is connected with the termination end of the water injection tank 2, and the other end is connected with the water outlet. When water is injected into the water injection port of the water injection tank 2, the water will flow out from the water outlet through the water injection tank 2 and the communication pipe 3, and flow into the first water bladder 8 connected to the water outlet.

Preferably, the first water bladder 8 is a retractable annular water bladder made of elastic material, which is sleeved on the outer wall of the inner drainage tube 1 and is about 2 cm away from the pipe head of the inner drainage tube. When water enters the first water bag 8, the water bag can be gradually expanded. In order to facilitate the placement of the first water bladder 8 on the outer wall of the inner drainage tube 1, in the design, a first groove 9 can be formed around the outer wall of the inner drainage tube 1, and the first water bladder 8 can be clamped in the first groove. 9, and the water inlet of the first water bladder 8 is communicated with the water outlet of the water injection channel. Preferably, a connecting pipe that communicates with the water injection channel is provided on the side wall of the inner drainage pipe 1 , and the connecting pipe communicates with the water inlet of the first water bladder 8 . In order to prevent water leakage from the connection between the water inlet and the water injection channel, a sealing ring can be used to seal the connection pipe between the water inlet of the first water bladder 8 and the water injection channel. After the first water bag 8 is sleeved outside the connecting pipe, the sealing ring is sleeved outside the first water bag 8 and fixed in the card groove, thereby sealingly connecting the first water bag 8 with the connecting pipe ( not shown in the figure).

The first water bag 8 can be an elastic water bag whose outer surface is spherical, ellipsoid or long cylindrical after being filled with water. , so that the inner drainage tube 1 is placed in the common bile duct; and after the water is injected into the water injection channel through the water injection assembly according to the specific situation, the first water bladder can be inflated (as shown by the dotted line in Figure 1), and the first water bladder can be inflated. The outer surface of a water bladder protrudes from the outer periphery of the inner drainage tube 1, thereby fixing the inner drainage tube 1 at the connection between the common bile duct and the duodenum, preventing the inner drainage tube 1 from breaking away from the common bile duct and entering the duodenum, which is convenient for internal drainage. The drainage channel of the tube drains bile. In the design, the drainage hole of the drainage channel is arranged close to the tube head of the inner drainage tube, so that the bile in the common bile duct can flow into the drainage groove through the drainage hole, and into the intestine through the drainage groove.

Wherein, in this embodiment, a water injection assembly is used to inject liquid (such as water) into the water injection channel. As shown in FIG. 3 , the water injection assembly includes: a syringe 11 ; a hose 12 that is detachably connected and communicated with the nipple of the syringe 11 ; A hollow needle 13 is mounted at the end of the tube 12. Wherein, the detachable connection may adopt the structure of screw connection or plug connection, which will not be described in detail here.

Wherein, the flexible tube 12 is a rubber tube-type structure with a length of about 15 cm. This rubber tube is convenient to enter the abdominal cavity through a laparoscopic Trocar hole or an abdominal incision, and a steel needle 13 with a length of about 1 cm is placed at the end of the rubber tube. The flexible needle can fill the water filling port of the water filling channel of the inner drainage tube 1 with water.

Preferably, in order to prevent the water injected into the first water bladder from the water injection assembly from flowing backwards, a blocking member that can self-rebound to block the inlet can be installed at the water injection port of the water injection channel. A one-way valve or a flap mold (not shown in the figure) that can make water flow unidirectionally in the direction of the first water balloon is set at the connecting pipe between the water injection channel and the first water bladder, and the flap mold can adopt the existing technology Structure. Wherein, the blocking member can be a circular rubber plug that can automatically rebound to block the water injection port of the water injection tank. After the water injection is completed, the needle is pulled out. Due to the elasticity of the rubber stopper, the needle hole pierced by the needle is closed, thereby preventing the reverse flow of the liquid in the water injection channel.

Among them, when the internal drainage tube is fixed at the junction of the common bile duct and the duodenum for a certain period of time (such as about five days) with a fixed structure, it is no longer necessary to drain the bile through the internal drainage tube. Tube 1 is pulled from the common bile duct, passed through the duodenum into the intestine, and then expelled.

Preferably, the self-detaching pulling structure of this embodiment includes: a water diversion channel 7 arranged on the inner drainage tube 1 and communicated with the first water bladder 8 ; Two water bladders 6.

The water diversion channel 7 extends along the axial direction of the inner drainage tube 1 , and its water outlet is opened on the side wall of the inner drainage tube 1 , and the water diversion channel 7 and the water injection channel are located on both sides of the central axis of the inner drainage tube 1 respectively. In order for the water entering the first water bag 8 to enter the second water bag 6 through the water diversion channel 7, it takes a certain period of time (such as about five days) to make the second water bag 6 in a full state (as shown by the dotted line in FIG. 1 ). When the inner drainage tube 1 is removed from the common bile duct, the diameter of the drainage channel 7 should be smaller than the diameter of the water injection channel, that is, the water in the second water bladder 8 can only slowly flow to the second water bladder through the water drainage channel 7 6. Preferably, the diameter of the water diversion channel 7 is about 0.1 mm, and the second water bladder 8 is placed at a position 1 cm away from the end of the inner drainage tube 1 .

The second water bag 6 can be a soft water bag made of inelastic material with a certain water storage cavity, and the water bag is also annular. On the outer wall of the inner drainage tube 1 . When designing, the second water bladder 6 can also adopt the same structure as the first water bladder 6 , which will not be repeated here.

In order to fix the second water bladder 6 on the outer wall of the inner drainage tube 1, in this embodiment, a second groove or boss 10 can be arranged around the outer wall of the inner drainage tube 1, and the second water bladder 6 is arranged in the second groove Or outside the boss 10 , and the water inlet of the second water bag 6 communicates with the water diversion channel 7 . Wherein, when the second groove (not shown in the figure) is used, the specific structure can be referred to the first groove 9, which will not be repeated here. When the boss 10 is used, the part of the boss 10 protruding from the outer surface of the inner drainage tube 1 is a hollow water storage cavity, and a communication pipe can be provided on the boss 10 to communicate with the water inlet of the second water bladder 6 (Fig. not shown). Similarly, the connection between the boss 10 and the second water bladder 6 can adopt the structure of the connection between the first water bladder 6 and the water injection channel.

In order to prevent the first water bladder and the second water bladder from falling off the inner drainage tube 1 when the inner drainage tube 1 is placed in the common bile duct, the inner surfaces of the first water bladder and the second water bladder 6 can also be It is fixed on the outer wall of the inner drainage tube 1 by means of bonding or the like.

The working process of the integrated bile duct self-detachment internal drainage device of this embodiment is as follows: when the internal drainage tube 1 is placed in the common bile duct and its tube tail enters the duodenum through the sphincter of Oddi, the water injection component is used to inject water into the water injection channel to The first water sac is filled and inflated, so that after the water injection is completed, the inner drainage tube in the common bile duct cannot enter the intestinal cavity of the duodenum under the block of the expanded first water sac, so that the inner drainage tube is fixed in the duodenum. in the common bile duct. When the water in the first water bag slowly flows into the second water bag near the end of the tube through the water diversion channel, the first water bag returns to its original shape and adheres to the outer wall of the inner drainage tube, while the second water bag inflates and fills up inside. Under the pulling of the second water bladder of water, the inner drainage tube is separated from the common bile duct and enters the intestinal tract through the duodenum, so as to be automatically discharged.

In summary, compared with the prior art, the integrated bile duct self-detachment internal drainage device according to the embodiment of the present invention has the following advantages:

1. The integrated bile duct self-detachment inner drainage device of the present embodiment integrates the functions of draining bile, fixing the inner drainage tube in the bile duct, and automatically separating the inner drainage tube from the bile duct. The structure and principle are simple, easy to operate and use, and effective drainage. Bile, avoid bile loss, and avoid the discomfort caused by the use of "T"-shaped tubes in the prior art.

2. The integrated bile duct self-detachment inner drainage device of this embodiment is provided with a fixed structure and a self-detachment pulling structure on the inner drainage tube, so that the inner drainage tube can be fixed on the common bile duct, and can also be automatically discharged from the common bile duct. Intestinal, avoiding the risk of bile leakage in the process of pulling out the "T"-shaped tube in the prior art, reducing the pain of the patient, and facilitating the early recovery of the patient.

Although the embodiments of the present invention are described in detail above, the embodiments of the present invention are not limited thereto, and those skilled in the art can make modifications according to the principles of the embodiments of the present invention. Various modifications should be understood as falling within the protection scope of the embodiments of the present invention.

Claims (9)

1. an integrated bile duct self-detachment inner drainage device, comprising an inner drainage tube, is characterized in that: One end of the inner drainage tube is provided with a drainage channel for bile drainage; The inner drainage tube is provided with a fixing structure for preventing the inner drainage tube from entering the duodenum from the common bile duct; The inner drainage tube is provided with a self-detaching pulling structure for pulling the inner drainage tube to enter the intestinal tract through the duodenum; Wherein, the drainage channel includes: a drainage groove opened in the center of the inner drainage pipe and extending along its axial direction; a drainage hole opened on the side wall of the inner drainage pipe and communicated with the drainage groove. 2. The integrated bile duct self-detachment internal drainage device according to claim 1, wherein the fixing structure comprises: The water injection channel is arranged at the other end of the inner drainage pipe, and the water injection port is opened on the end face of the inner drainage pipe; The first water bladder is sleeved on the outer wall of the inner drainage tube and communicated with the water outlet of the water injection channel. 3 . The integrated bile duct self-detachment and internal drainage device according to claim 2 , wherein the fixing structure further comprises a water injection assembly for injecting water into the water injection channel. 4 . 4. The integrated bile duct self-detachment inner drainage device according to claim 2, wherein the water injection channel extends along the axial direction of the inner drainage tube, and the water outlet is opened at the inner drainage tube of the inner drainage tube. side wall. 5. The integrated bile duct self-detachment internal drainage device according to claim 2, wherein the self-detachment pulling structure comprises: a water diversion channel arranged on the inner drainage tube and communicated with the first water bladder; The second water bladder is sleeved on the outer wall of the inner drainage tube and communicated with the drainage channel. 6 . The integrated bile duct self-detachment internal drainage device according to claim 5 , wherein the water diversion channel extends along the axial direction of the inner drainage tube, and the water outlet is opened at the inner drainage tube of the inner drainage tube. 7 . side wall. 7 . The integrated bile duct self-detachment and internal drainage device according to claim 2 , wherein the water injection port of the water injection channel is provided with a blocking member that can self-rebound to block the water injection port. 8 . 8 . The integrated bile duct self-detachment internal drainage device according to claim 2 , wherein a first groove is formed around the outer wall of the internal drainage tube, and the first water bladder is arranged in the first groove. 9 . 9 . The integrated bile duct self-detachment internal drainage device according to claim 5 , wherein the outer wall of the internal drainage tube is surrounded by a second groove or a boss, and the second water bladder is arranged in the second groove. 10 . Inside the groove or outside the boss.

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