A bile reinfusion T tube which can be placed under laparoscope combined with cholangioscope direct vision

Abstract

This invention provides a bile reinfusion T-tube that can be inserted under direct visualization via laparoscopy and cholangioscopy, relating to the field of medical technology. It includes a T-tube main body with a secondary tube installed within it. One end of the secondary tube penetrates the main body of the T-tube, and an outlet tube is fixed to one end of the main body. A connecting tube is installed at the end of the outlet tube away from the main body, and a filter frame is installed within the connecting tube. This bile reinfusion T-tube uses the secondary tube as a guidewire channel for insertion under direct visualization via laparoscopy and cholangioscopy. It passes through the bile duct into the duodenum, allowing for the injection of bile or nutrient solution to meet nutritional needs. The surgical field is established through laparoscopy, and the tube is inserted through a bile duct incision using a cholangioscopy. The entire procedure is visualized under dual-scope guidance. In use, the secondary tube serves as a zebra guidewire channel, and insertion is performed under direct visualization via laparoscopy and cholangioscopy. Guided by the zebra guidewire, it is inserted into the duodenum through the common bile duct, achieving a 100% success rate.

Description

Technical Field

[0001] This utility model relates to the field of medical technology, and in particular to a bile reinfusion T-tube that can be inserted under direct visualization with laparoscopy combined with choledochoscopy. Background Technology

[0002] Current laparoscopic combined with choledochoscopy techniques are performed under direct vision, with real-time imaging, accurate positioning, and fewer complications. Blind placement, however, lacks visual guidance and relies on touch and experience, easily leading to problems such as catheter deviation, tissue damage, and low success rates. For example, the catheter may become coiled within the bile duct, preventing smooth entry into the duodenum and hindering bile reinfusion; inaccurate positioning, perforation risk, and numerous postoperative complications also exist. Blind placement relies on the surgeon's experience and tactile feedback, rigidly pushing the catheter using a metal guidewire (0.8-1.2mm in diameter).

[0003] One existing technology for bile reinfusion T-tubes that can be inserted under direct visualization with laparoscopy and choledochoscopy has significant limitations and poor practicality. It lacks real-time image monitoring, the movement trajectory of the catheter tip is uncontrollable, and the catheter position is determined solely by the feeling of resistance. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of existing technologies, such as the lack of real-time video monitoring, uncontrollable movement trajectory of the catheter tip, and the limitation of judging the catheter position solely by resistance, resulting in poor practicality. In response, this invention proposes a bile reinfusion T-tube that can be inserted under direct visualization with laparoscopy combined with choledochoscopy.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a bile reinfusion T-tube that can be inserted under direct visualization with laparoscopy and choledochoscopy, comprising a T-tube body, a secondary tube installed inside the T-tube body, one end of the secondary tube penetrating the T-tube body, an outlet tube fixed to one end of the T-tube body, a connecting tube installed at the end of the outlet tube away from the T-tube body, and a filter frame installed inside the connecting tube.

[0006] Preferably, a collar is fixed on the outer wall of the T-tube body, and adhesive tapes are fixed at both ends of the outer wall of the collar.

[0007] Preferably, one end of the filter frame is fixed with a mounting plate, and the mounting plate is fixed to the connecting pipe by a second bolt.

[0008] Preferably, a handle is fixed on the outer wall of the filter frame, and one end of the connecting pipe has an opening that matches the filter frame.

[0009] Preferably, a threaded sleeve is fixed to the end of the connecting pipe away from the outlet pipe, and a sealing plate is fixed to one end of the main body of the T-tube on the outer wall of the secondary tube.

[0010] Preferably, the outer walls of the opposite ends of the outlet pipe and the connecting pipe are both fixed with flanges, and the two flanges are fixed together by the first bolt.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] In this invention, the bile reinfusion T-tube uses a secondary tube as a guidewire channel. Under direct visualization with laparoscopy combined with choledochoscopy, it is inserted approximately 15 cm into the duodenum via the bile duct, allowing bile or nutrient solution to be injected to meet nutritional needs. The surgical field is established through laparoscopy, and the tube is inserted through a bile duct incision using choledochoscopy. The entire procedure is visualized under dual-scope guidance. During use, the secondary tube serves as a zebra guidewire channel, inserted under direct visualization with laparoscopy combined with choledochoscopy. Guided by the zebra guidewire, it is inserted into the duodenum via the common bile duct, achieving a 100% success rate. A threaded connection to the drainage bag ensures a closed reinfusion effect, enabling real-time image feedback and dynamic adjustment of the catheter's direction. Simultaneous procedures such as stone removal and stenosis dilation can be performed. Attached Figure Description

[0013] Figure 1 A three-dimensional diagram of a bile reinfusion T-tube that can be inserted under direct visualization with laparoscopy and choledochoscopy is provided for this utility model.

[0014] Figure 2 A side-view perspective of a bile reinfusion T-tube that can be inserted under direct vision of laparoscopy combined with choledochoscopy is presented for this utility model.

[0015] Figure 3 A three-dimensional diagram of a bile reinfusion T-tube that can be inserted under direct visualization with laparoscopy and choledochoscopy is provided for this utility model.

[0016] Figure 4 This invention presents a schematic diagram of the internal structure of a bile reinfusion T-tube that can be inserted under direct visualization with laparoscopy and cholangioscopy.

[0017] Legend: 1. T-tube main body; 2. Sealing plate; 3. Secondary tube; 4. Ring; 5. Tape; 6. Discharge tube; 7. Connecting tube; 8. Flange; 9. First bolt; 10. Filter frame; 11. Screw sleeve; 12. Mounting plate; 13. Second bolt; 14. Handle; 15. Opening. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0020] Example 1, as Figure 1-4 As shown, this utility model provides a bile reinfusion T-tube that can be inserted under direct visualization with laparoscopy and cholangioscopy. It includes a T-tube body 1, a secondary tube 3 installed inside the T-tube body 1, one end of the secondary tube 3 penetrating through the T-tube body 1 and extending outside the T-tube body 1; an outlet tube 6 is fixed to one end of the T-tube body 1, and a connecting tube 7 is installed at the end of the outlet tube 6 away from the T-tube body 1, and a filter frame 10 is installed inside the connecting tube 7.

[0021] The overall effect of Embodiment 1 is as follows: The bile reinfusion T-tube uses the secondary tube 3 as a guidewire channel, and is operated approximately 15 cm under direct visualization using laparoscopy combined with choledochoscopy. It passes through the bile duct into the duodenum, allowing bile or nutrient solution to be injected to meet nutritional needs. The bile reinfusion T-tube utilizes laparoscopy to establish the surgical field, and is inserted through a bile duct incision in conjunction with choledochoscopy, achieving full visualization during the procedure. In use, the secondary tube 3 serves as a zebra guidewire channel, inserted under direct visualization using laparoscopy combined with choledochoscopy, and guided by the zebra guidewire through the common bile duct into the duodenum, achieving a 100% success rate. The threaded sleeve 11 connects to the drainage bag, achieving a closed reinfusion effect, enabling real-time image feedback, dynamic adjustment of the catheter's direction, and simultaneous completion of complex operations such as stone removal and stenosis dilation. The filter frame 10 allows for some filtration of the bile during its extraction.

[0022] Example 2, as Figure 1-4 As shown, a collar 4 is fixed on the outer wall of the T-tube body 1, and adhesive tapes 5 are fixed on both ends of the outer wall of the collar 4. A mounting plate 12 is fixed on one end of the filter frame 10, and the mounting plate 12 is fixed to the connecting pipe 7 by the second bolt 13. A handle 14 is fixed on the outer wall of the filter frame 10. An opening 15 matching the filter frame 10 is opened on one end of the connecting pipe 7. A threaded sleeve 11 is fixed on the end of the connecting pipe 7 away from the outlet pipe 6. A sealing plate 2 is fixed on the outer wall of the secondary pipe 3 at one end of the T-tube body 1. Flanges 8 are fixed on the outer walls of the opposite ends of the outlet pipe 6 and the connecting pipe 7. Both flanges 8 are fixed by the first bolt 9.

[0023] The overall effect of Embodiment 2 is that, through the setting of the collar 4 and the adhesive tape 5, the T-tube body 1 can be attached to the external component or the user's body to prevent it from shaking. Through the setting of the mounting plate 12 and the second bolt 13, the filter frame 10 can be installed and removed separately for easy cleaning and replacement. Through the setting of the threaded sleeve 11, the external drainage bag can be threadedly connected for easy installation and removal of the drainage bag. Through the setting of the flange 8 and the first bolt 9, the connecting pipe 7 can be installed and removed when filtration is not required.

[0024] Working principle: When using this device, the secondary tube 3 of the bile infusion T-tube is used as a guide wire channel. Under direct visualization with laparoscopy combined with choledochoscopy, it is inserted approximately 15 cm into the duodenum through the bile duct. Bile or nutrient solution can be injected to meet nutritional needs. The bile infusion T-tube is inserted through a bile duct incision using a laparoscopy combined with choledochoscopy, achieving full visualization during the operation. In use, the secondary tube 3 is used as a zebra guide wire channel. It is inserted under direct visualization with laparoscopy combined with choledochoscopy, and then inserted into the duodenum through the common bile duct under the guidance of the zebra guide wire. The success rate is 100%. The threaded sleeve 11 is threaded into the drainage bag to achieve a closed-loop reinfusion effect, enabling real-time image feedback and dynamic adjustment of the catheter direction. It can simultaneously complete complex operations such as stone removal and narrow segment dilation. The filter frame 10 allows for filtration of bile during its extraction. The collar 4 and the adhesive tape 5 ensure that the T-tube body 1 fits snugly against external components or the user, preventing wobbling. The mounting plate 12 and the second bolt 13 allow for individual installation and removal of the filter frame 10, facilitating cleaning and replacement. The threaded sleeve 11 connects to the external drainage bag, facilitating its installation and removal. The flange 8 and the first bolt 9 allow for easy installation and removal of the connecting pipe 7 when filtration is not required.

[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A bile reinfusion T-tube that can be inserted under direct visualization with laparoscopy combined with choledochoscopy, comprising a T-tube body (1), characterized in that: A secondary tube (3) is installed inside the main body (1) of the T-tube. One end of the secondary tube (3) penetrates through the main body (1) of the T-tube. A liquid outlet pipe (6) is fixed at one end of the main body (1). A connecting pipe (7) is installed at the end of the liquid outlet pipe (6) away from the main body (1) of the T-tube. A filter frame (10) is installed inside the connecting pipe (7).

2. The bile return T-tube that can be inserted under direct laparoscopic and choledochoscopy guidance according to claim 1, characterized in that: A collar (4) is fixed on the outer wall of the T-tube body (1), and adhesive tapes (5) are fixed at both ends of the outer wall of the collar (4).

3. A bile return T-tube that can be inserted under direct laparoscopic and choledochoscopy guidance according to claim 1, characterized in that: One end of the filter frame (10) is fixed with an installation plate (12), and the installation plate (12) is fixed to the connecting pipe (7) by a second bolt (13).

4. A bile reinfusion T-tube that can be inserted under direct laparoscopic and choledochoscopy guidance according to claim 1, characterized in that: A handle (14) is fixed on the outer wall of the filter frame (10), and an opening (15) matching the filter frame (10) is provided at one end of the connecting pipe (7).

5. A bile return T-tube that can be inserted under direct laparoscopic and choledochoscopy guidance according to claim 1, characterized in that: The end of the connecting pipe (7) away from the outlet pipe (6) is fixed with a screw sleeve (11), and the end of the T-tube body (1) is fixed with a sealing plate (2) on the outer wall of the sub-pipe (3).

6. A bile return T-tube that can be inserted under direct laparoscopic and choledochoscopy guidance according to claim 1, characterized in that: The outer walls of the opposite ends of the outlet pipe (6) and the connecting pipe (7) are both fixed with flanges (8), and the two flanges (8) are fixed together by the first bolt (9).

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