Visual biliary tract rotary cutting biopsy dilation system assembly
By designing a visual bile duct rotation biopsy dilation system component, which combines a high-resolution lens and light source, the problem of low positive rate of biopsy for malignant stricture of the hilar bile duct was solved, achieving accurate acquisition of lesion tissue and efficient operation.
Patent Information
- Application Number
- CN202511675255.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-15
- Publication Date
- 2025-12-26
AI Technical Summary
In existing technologies, biopsies for malignant strictures of the hepatic hilum bile duct have a low positive rate due to the lack of direct visualization guidance, and conventional biopsy tools are unable to accurately locate the lesion site, resulting in insufficient tissue samples.
A visual bile duct rotary biopsy dilation system component was designed, comprising a conical sleeve, a visual mechanism, a gripping mechanism, and a rotary cutting mechanism. Combined with a high-resolution lens, a light source, and a Luer lock cap, it enables clear observation and precise operation within the bile duct. The lens captures and transmits image signals, the light source provides sufficient illumination, and the rotary cutting mechanism achieves efficient cutting and sampling.
It improved the positive rate of biopsy for malignant strictures of the hilar bile duct, ensured accurate acquisition of tissue samples, reduced the risk of bleeding, and improved the flexibility and efficiency of the procedure.
Smart Images
Figure CN121196622A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of medical devices, in particular to a visual biliary tract rotary biopsy and dilation system assembly. BACKGROUND
[0002] The hepatic portal bile duct refers to the bile duct structure located in the hepatic portal of the liver. The hepatic portal is the area where blood vessels, bile ducts and other structures of the liver enter and exit the liver. It is mainly composed of the initial segment of the common hepatic duct formed by the confluence of the left and right hepatic ducts at the hepatic portal, and is an important channel for the discharge of bile from the liver to the gallbladder and the intestinal tract. The hepatic portal bile duct plays a key role in the transport of bile. Its anatomical position is special, surrounded by important blood vessels and other tissue structures. The hepatic portal bile duct region may develop various diseases, such as cholangiocarcinoma, cholangitis, intrahepatic bile duct stones with inflammation, etc. For suspected malignant tumors, accurate pathological diagnosis is the gold standard for diagnosis. The rotary biopsy function of the system can obtain specimens of the hepatic portal bile duct lesion under direct vision, and determine the nature (benign or malignant) and type of the lesion through pathological examination, providing an important basis for the development of subsequent treatment plans.
[0003] Currently, in the operation related to malignant stenosis of the hepatic portal bile duct, the conventional biopsy tool is sent into the bile duct through duodenoscopic ERCP operation. In the absence of direct vision guidance of intraluminal super-thin endoscopy, the stenosis site of the bile duct is blindly grasped to complete biopsy by experience. Then, the stenosis segment is dilated using a conventional dilation tool, and finally a stent is placed.
[0004] In the prior art, part of the biliary tract rotary biopsy and dilation is to send a conventional biopsy tool into the bile duct and blindly grasp the tissue to complete biopsy without direct vision guidance of intraluminal super-thin endoscopy. Due to the lack of direct vision guidance, it is difficult for doctors to accurately locate the lesion site, and the tissue samples obtained by the conventional biopsy tool are insufficient or not taken from the key lesion area, resulting in a low positive rate of biopsy of malignant stenosis of the hepatic portal bile duct. Therefore, in view of the above shortcomings, a visual biliary tract rotary biopsy and dilation system assembly is proposed. SUMMARY
[0005] In view of the shortcomings of the prior art, the present application provides a visual biliary tract rotary biopsy and dilation system assembly, which solves the problem of low positive rate of biopsy of malignant stenosis of the hepatic portal bile duct in the prior art due to the inability to directly observe during part of the biliary tract rotary biopsy and dilation process.
[0006] In order to achieve the above object, the application is realized by the following technical scheme: the visual biliary rotary biopsy dilation system assembly comprises a conical sleeve, a visual mechanism is fixedly connected inside the conical sleeve, a holding mechanism is installed on the left side of the visual mechanism, a rotary mechanism is installed on the left end of the holding mechanism, the visual mechanism comprises a cable, the cable is fixedly connected outside the conical sleeve, a gold finger is fixedly connected to the top end of the cable, a protection assembly is fixedly connected to the left end of the conical sleeve, a luer lock cap is fixedly connected to the left end of the protection assembly, an insertion tube is fixedly connected inside the protection assembly, a light source is fixedly connected inside the protection assembly, a PCB circuit board is fixedly connected to the right end inside the protection assembly, and a lens is fixedly connected to the left end inside the insertion tube.
[0007] Preferably, the protection assembly comprises a lower shell one, the right end of the lower shell one is fixedly connected to the left side of the conical sleeve, and the top end of the lower shell one is clamped with an upper shell one.
[0008] Preferably, the left end of the lower shell one is fixedly connected inside the luer lock cap.
[0009] Preferably, the inside of the lower shell one is fixedly connected outside the light source.
[0010] Preferably, the holding mechanism comprises a luer head, the outside of the luer head is screw-connected inside the luer lock cap, a lower shell two is fixedly connected to the left side of the luer head, an upper shell two is clamped inside the lower shell two, a channel tube is arranged inside the lower shell two, a lead-in tube is fixedly connected to the left end of the lower shell two, and a hand holding seat is clamped to the left end of the upper shell two.
[0011] Preferably, the outside of the insertion tube is slidingly connected inside the lead-in tube.
[0012] Preferably, the rotary mechanism comprises a sampling head end, the right end of the sampling head end is fixedly connected to the left end of the lead-in tube, a plurality of biopsy scraper openings are arranged outside the sampling head end, a channel body is arranged inside the sampling head end, the surface of the sampling head end is provided with threads, the threads are sharp in front and blunt in back, which is beneficial to rotary biopsy dilation and reduces the probability of bleeding and perforation.
[0013] Preferably, the inside of the luer lock cap is fixedly connected to the right end of the insertion tube.
[0014] Preferably, the right end inside of the lower shell one is fixedly connected outside the PCB circuit board, and the left end of the cable is fixedly connected inside the right end of the lower shell one.
[0015] Preferably, the outside of the insertion tube is slidingly connected inside the luer head.
[0016] The application provides a visual biliary rotary biopsy and dilation system assembly.
[0017] 1、 The application can capture image information inside the bile duct quickly and clearly with high resolution and wide-angle view through the lens, and the gold finger can quickly convert the image into stable and high-speed transmission signals, which are accurately transmitted to the external display device, the light source uniformly and sufficiently illuminates the inside of the bile duct, providing a clear observation field of view for the doctor, so that the doctor can accurately judge the disease and reduce the case that the positive rate of liver portal bile duct malignant stricture biopsy is not high.
[0018] 2、 The luer and the luer lock are accurately connected through threads, so that the insertion tube can smoothly slide therein, and the force conduction for subsequent operation is prepared, so that the assembly can be quickly assembled, and then the flexibility is improved.
[0019] 3、 The sampling head can convert the rotary force into cutting force through the external biopsy scraper, and cut and sample the diseased tissue efficiently. If treatment is needed, the instrument pushing force can accurately deliver the dilation balloon or stent to the target position through the forceps channel tube and the forceps channel body, successfully complete the dilation and stent placement of the bile duct stricture section, and then improve the work efficiency. DETAILED DESCRIPTION
[0020] Figure 1 It is a perspective view of the application;
[0021] Figure 2 It is a second schematic view of the upper shell of the application;
[0022] Figure 3 It is a schematic view of the insertion tube of the application;
[0023] Figure 4 It is a schematic view of the cable of the application;
[0024] Figure 5 It is a schematic view of the luer head of the application;
[0025] Figure 6 It is a schematic view of the forceps channel body of the application.
[0026] 1、 Conical sleeve; 2、 Visual mechanism; 21、 Luer lock cap; 22、 Protection assembly; 221、 Lower shell one; 222、 Upper shell one; 23、 Insertion tube; 24、 Light source; 25、 PCB circuit board; 26、 Cable; 27、 Gold finger; 28、 Lens; 3、 Holding mechanism; 31、 Luer head; 32、 Lower shell two; 33、 Upper shell two; 34、 Forceps channel tube; 35、 Lead-in tube; 36、 Handheld seat; 4、 Rotary cutting mechanism; 41、 Sampling head end; 42、 Biopsy scraper; 43、 Forceps channel body. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the specification of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of the present application.
[0028] Please refer to the drawings attached Figure 1 -attached Figure 3 The visual biliary tract rotary biopsy and dilation system assembly provided by the embodiments of the present application comprises a conical sleeve 1, characterized in that a visual mechanism 2 is fixedly connected to the inside of the conical sleeve 1, and the visual mechanism 2 is used for watching the process of biliary tract rotary biopsy. The visual mechanism 2 comprises a cable 26, the outside of the cable 26 is fixedly connected to the inside of the conical sleeve 1, the stability of the cable 26 in the use process is ensured by the conical sleeve 1, and the cable 26 can also be prevented from being damaged due to external extrusion and friction. The top end of the cable 26 is fixedly connected with a golden finger 27, the golden finger 27 can realize stable and high-speed signal transmission, and ensure that images and data can be accurately and correctly transmitted to an external display device. Here, it is prior art, and therefore will not be described in more detail. The left end of the conical sleeve 1 is fixedly connected with a protection assembly 22, the protection assembly 22 comprises a lower shell one 221, the left end of the cable 26 is fixedly connected to the inside of the right end of the lower shell one 221, and the lower shell one 221 can provide basic physical protection for the cable 26. The left end of the lower shell one 221 is fixedly connected to the inside of a luer lock cap 21. The luer lock cap 21 adopts a luer interface design.
[0029] Please refer to the drawings attached Figure 2 -attached Figure 4 The right end of the lower shell one 221 is fixedly connected to the left side of the conical sleeve 1, so that the protection assembly 22 and the conical sleeve 1 are tightly combined as a whole. The top end of the lower shell one 221 is clamped with an upper shell one 222, the upper shell one 222 and the lower shell one 221 form a closed space, which can effectively prevent impurities such as liquid and dust from entering, and play a good protection role for the internal electronic elements. The left end of the protection assembly 22 is fixedly connected with the luer lock cap 21, and the surface of the luer lock cap 21 is provided with threads. The inside of the protection assembly 22 is fixedly connected with an insertion tube 23, the inside of the luer lock cap 21 is fixedly connected to the right end of the insertion tube 23, and the stability of the insertion tube 23 in the working process is ensured by fixing the insertion tube 23. The inside of the protection assembly 22 is fixedly connected with a light source 24, the light source 24 can provide sufficient and uniform illumination for the inside of the biliary tract, and ensure that the doctor can clearly observe the situation inside the biliary tract;
[0030] The inner part of the lower shell 221 is fixedly connected to the outside of the light source 24 by welding, thereby providing support for the light source 24. The inner right end of the protective assembly 22 is fixedly connected with the PCB circuit board 25, which is responsible for circuit control and signal processing of the light source 24, cable 26 and other elements. This is prior art and will not be described in detail. The inner right end of the lower shell 221 is fixedly connected to the outside of the PCB circuit board 25, and the lower shell 221 and the PCB circuit board 25 are fixed by welding, thereby providing support for the PCB circuit board 25. The left end of the insertion tube 23 is fixedly connected with the lens 28, which is only about 1MM. It is beneficial to pass through narrow spaces. The lens 28 has the characteristics of high resolution and wide-angle view, and can clearly capture the image information inside the bile duct and transmit it to the external display device through the cable 26. This is prior art and will not be described in detail.
[0031] Please refer to the attached Figure 1 , attached Figure 5 and attached Figure 6 The left side of the visual mechanism 2 is provided with a holding mechanism 3, which includes a luer head 31. The outside of the insertion tube 23 is slidingly connected to the inside of the luer head 31, and the luer head 31 limits the sliding of the insertion tube 23. The outside of the luer head 31 is threadedly connected to the inside of the luer lock cap 21, and the outside of the luer head 31 is threadedly connected to the inside of the luer lock cap 21, so that the visual mechanism 2 and the holding mechanism 3 can be closely combined. The left side of the luer head 31 is fixedly connected with the lower shell 32, and the lower shell 32 is engaged with the upper shell 33. The space formed by the lower shell 32 and the upper shell 33 provides a containing space. The inner part of the lower shell 32 is provided with a channel tube 34, which allows the inner part of the lower shell 32 to provide a moving space. The left end of the lower shell 32 is fixedly connected with the lead-in tube 35, and the outside of the insertion tube 23 is slidingly connected to the inside of the lead-in tube 35. The lead-in tube 35 plays a role of transition and guidance, ensuring that the insertion tube 23 can be stably installed. The left end of the lower shell 32 and the upper shell 33 are engaged with the hand-held seat 36, which is provided with anti-slip texture on the surface, which can provide doctors with comfortable and stable holding feeling, and is convenient for doctors to operate finely;
[0032] The left end of the holding mechanism 3 is provided with a rotary cutting mechanism 4 for biopsy and dilation. The rotary cutting mechanism 4 comprises a sampling head 41, the right end of which is fixedly connected to the left end of the guide tube 35 by welding, thereby providing support for the sampling head 41. A plurality of biopsy scraper openings 42 are formed on the outer surface of the sampling head 41, which enables efficient cutting and sampling of diseased tissue during rotation. The interior of the sampling head 41 is provided with a channel body 43, which provides a space for the interior of the sampling head 41. The surface of the sampling head 41 is provided with threads, which enables the sampling head 41 to pass through the narrow segment of the bile duct. The sharp front and blunt rear of the threads facilitate rotary cutting and dilation biopsy while reducing the risk of bleeding and perforation.
[0033] Working principle: The doctor holds the hand-held seat 36 and applies a pushing force and a rotating force with the hands. The force is transmitted to the insertion tube 23 through the lower shell 32 and the luer head 31. The threaded connection between the luer head 31 and the luer lock cap 21 ensures stable transmission of the force, enabling the insertion tube 23 to slide and rotate smoothly within the luer head 31 and the guide tube 35. The insertion tube 23 transmits the force to the sampling head 41, driving it to penetrate the bile duct and rotate. The surface of the sampling head 41 is provided with threads, which enables the sampling head 41 to pass through the narrow segment of the bile duct. The sharp front and blunt rear of the threads facilitate rotary cutting and dilation biopsy while reducing the risk of bleeding and perforation. At this time, the biopsy scraper openings 42 on the outer surface of the sampling head 41 are subjected to the reaction force of the tissue. The special blade design converts the rotating force into a cutting force on the diseased tissue, completing the biopsy sampling.
[0034] During visualization, the lens 28 captures the image and generates an electrical signal, which is transmitted through the cable 26. The cable 26 is fixed and constrained by the tapered sleeve 1 and the protection assembly 22, which prevents external interference with signal transmission. The heat generated by the light source 24 is conducted to the outside through contact with the lower shell 221, maintaining a stable internal working environment. During the treatment phase, when a dilation balloon or stent needs to be delivered, the instrument pushing force is transmitted to the target position through the channel tube 34 and the channel body 43. The tight connection and fixed structure between the components ensure efficient and stable transmission of the force, achieving dilation of the narrow segment of the bile duct and placement of the stent.
[0035] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A visual choledochal rotary biopsy dilation system assembly comprising a conical sleeve (1), characterized in that, The inside of the conical sleeve (1) is fixedly connected with a visual mechanism (2), the left side of the visual mechanism (2) is provided with a holding mechanism (3), and the left end of the holding mechanism (3) is provided with a rotary cutting mechanism (4); The visual mechanism (2) comprises a cable (26), the outside of the cable (26) is fixedly connected in the inside of the conical sleeve (1), the top end of the cable (26) is fixedly connected with a gold finger (27), the left end of the conical sleeve (1) is fixedly connected with a protection assembly (22), the left end of the protection assembly (22) is fixedly connected with a luer lock cap (21), the inside of the protection assembly (22) is fixedly connected with an insertion tube (23), the inside of the protection assembly (22) is fixedly connected with a light source (24), the inside right end of the protection assembly (22) is fixedly connected with a PCB circuit board (25), and the left end inside of the insertion tube (23) is fixedly connected with a lens (28).
2. The visual cholangioscopy biopsy dilation system assembly of claim 1, wherein, The protection assembly (22) comprises a lower shell one (221), and the right end of the lower shell one (221) is fixedly connected to the left side of the conical sleeve (1).
3. The visual cholangioscopy biopsy dilation system assembly of claim 2, wherein, The left end of the lower shell one (221) is fixedly connected to the inside of the luer lock cap (21).
4. The visual cholangioscopy biopsy dilation system assembly of claim 2, wherein, The inside of the lower shell one (221) is fixedly connected to the outside of the light source (24).
5. The visual cholangioscopy biopsy dilation system assembly of claim 1, wherein, The holding mechanism (3) comprises a luer head (31), the outside of the luer head (31) is threadedly connected to the inside of the luer lock cap (21), the left side of the luer head (31) is fixedly connected with a lower shell two (32), the inside of the lower shell two (32) is clamped with an upper shell two (33), the inside of the lower shell two (32) is provided with a channel tube (34), the left end of the lower shell two (32) is fixedly connected with a lead-in tube (35), and the left end of the lower shell two (32) is clamped with a hand holding seat (36) in the upper shell two (33).
6. The visual cholangioscopy biopsy dilation system assembly of claim 5, wherein, The outside of the insertion tube (23) is slidably connected to the inside of the lead-in tube (35).
7. The visual cholangioscopy biopsy dilation system assembly of claim 5, wherein, The rotary cutting mechanism (4) comprises a sampling head end (41), the right end of the sampling head end (41) is fixedly connected to the left end of the lead-in tube (35), a plurality of biopsy scraper openings (42) are formed in the outside of the sampling head end (41), the inside of the sampling head end (41) is provided with a channel body (43), and the surface of the sampling head end (41) is provided with threads.
8. The visual cholangioscopy biopsy dilation system assembly of claim 1, wherein, The inside of the luer lock cap (21) is fixedly connected to the right end of the insertion tube (23).
9. The visual cholangioscopy biopsy dilation system assembly of claim 2, wherein, The inside right end of the lower shell one (221) is fixedly connected to the outside of the PCB circuit board (25), and the left end of the cable (26) is fixedly connected to the right end inside of the lower shell one (221).
10. The visual cholangioscopy biopsy dilation system assembly of claim 5, wherein, The outside of the insertion tube (23) is slidably connected to the inside of the luer head (31).