Gallbladder sheath tube of choledochoscope

Abstract

The utility model provides a choledochoscope gall bladder sheathing canal, including sheathing canal, inner core, specimen collector and seal joint, sheathing canal includes drainage tube section I, drainage tube section II and drainage tube section III, drainage tube section I outer wall is provided with inner annular balloon and outer annular balloon, drainage tube section III outer wall is provided with inflation catheter I, inflation catheter II and water outlet joint I; the inner core comprises a head part, a body part and a tail part, and a rigid guide wire is fixed at the head end of the head part; the specimen collector is connected with the water outlet connector I. The sealing connector is connected with the tail side of the drainage pipe section III. The sheath tube with the conical inner core can enter a gall bladder cavity more easily through a gall bladder incision; the inner annular balloon is filled to prevent the sheathing canal from being separated from the gallbladder incision; after the outer annular balloon is filled, the sheath tube can be fixed, and the inner annular balloon and the outer annular balloon generate elastic pressure on a gallbladder incision, so that compression hemostasis and sheath tube displacement prevention are realized; the sealing joint can prevent blood clots, cut polyps and silt-like stones from entering the gallbladder duct or the common bile duct.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a gallbladder sheath tube of a choledochoscopic scope. Background Art

[0002] Laparoscopic cholecystolithotomy / polyp removal is currently a common surgical option for the treatment of gallstones and gallbladder polyps. Due to the lack of an effective choledochoscope sheath, the following disadvantages exist in the actual operation: 1. In order to maintain a clear field of view of the choledochoscope, it is necessary to continuously inject flushing fluid into the gallbladder cavity through the choledochoscope. As the gallbladder pressure increases, muddy stones or gravel can enter the cystic duct or common bile duct with the flushing fluid, leading to the incidence of complications such as postoperative acute cholecystitis, obstructive jaundice, and acute pancreatitis; 2. Bile, muddy stones or gravel, and bile sludge flow into the abdominal cavity through the incision with the choledochoscope flushing fluid. Bile irritation to the peritoneum may cause postoperative pain. Removal of gravel from the gallbladder that flows into the abdominal cavity will delay the operation time. Gravel or muddy stones remaining in the abdominal cavity may lead to postoperative abdominal abscesses or granulomas. A large amount of flushing fluid entering the abdominal cavity to produce ascites will affect the healing of the gallbladder incision; 3. During stone removal or polyp removal, the choledochoscope needs to repeatedly enter the gallbladder cavity through the gallbladder incision, which not only prolongs the operation time, but also makes it more likely to cause incision bleeding.

[0003] At present, the thoracic duct is often used as the gallbladder sheath of the choledochoscope. Although it provides a channel for the choledochoscope to enter and exit the gallbladder, the above-mentioned shortcomings still exist. At the same time, sheaths for choledochoscopes have also appeared, such as a choledochoscope sheath for gallbladder preservation and stone removal / polyp removal (patent number: ZL201821201645.1). Although the inner and outer air bags have a squeezing effect on the gallbladder incision, it is difficult to insert the sheath into the gallbladder cavity through the gallbladder incision; a choledochoscope sheath (patent number: 202120464044.5), the sheath head adopts an inclined oblique insertion, which is easy to insert the sheath into the gallbladder cavity through the gallbladder duct incision, but the sheath is inserted too deep, and the oblique insertion may damage the gallbladder mucosa on the opposite side of the gallbladder incision. In addition, the oblique insertion is not conducive to the choledochoscope to explore the gallbladder cavity, and the gallbladder cavity needs to be explored 180 degrees by rotating the sheath. Utility Model Content

[0004] According to the technical problems raised above, a choledochoscope gallbladder sheath is provided. The technical means adopted by the utility model are as follows:

[0005] A gallbladder sheath tube of a choledochoscope comprises: a sheath tube, an inner core, a specimen collector and a sealing joint, wherein the sheath tube comprises a drainage tube segment I, a drainage tube segment II and a drainage tube segment III which are sequentially connected to each other from the beginning to the end, wherein the outer wall of the drainage tube segment I is sequentially provided with an inner annular balloon and an outer annular balloon, and the outer wall of the drainage tube segment III is provided with an inflation conduit I, an inflation conduit II and a water outlet joint I, and the inflation conduit I and the inflation conduit II are respectively connected with the inner annular balloon and the outer annular balloon;

[0006] The inner core is installed inside the sheath tube, and includes a head, a body and a tail connected in sequence from head to tail, the head is conical, and the head end of the head passes through the drainage tube segment I, and the head end of the head is fixed with a rigid guide wire with a soft head end; one end of the specimen collector is connected to the water outlet joint I, the sealing joint is connected to the tail side of the drainage tube segment III, and a choledochoscope passing valve is provided inside the sealing joint.

[0007] Furthermore, the wall of the drainage pipe section I is concave and has a channel I therein; the drainage pipe section II is provided with a channel II connected to the channel I; the drainage pipe section III is provided with a channel V connected to the channel II; the channels I, II and V are connected to form an installation channel, and the inner core is placed in the installation channel; a base connected to the channel V is provided at the tail of the inner core.

[0008] Furthermore, a channel III is provided in the wall of the drainage tube section II, one end of which extends to the channel I and is connected to the inner annular balloon, and a channel IV is provided in the wall of the drainage tube section II, one end of which extends to the channel I and is connected to the outer annular balloon; the inflation catheter I is connected to the channel III, and the inflation catheter II is connected to the channel IV.

[0009] Furthermore, the water outlet joint I is connected to the channel V in the drainage pipe section III, and a thread is provided on the outer wall of the water outlet joint I. Water outlet joints II are provided at both ends of the specimen collector, and the water outlet joint II is threadedly connected to the water outlet joint I. A channel VII is provided inside the specimen collector, and the channel VII is connected to the water outlet joint II.

[0010] Furthermore, a filter is provided inside the specimen collector.

[0011] Furthermore, a thread is provided on the outer wall of the drainage pipe section III, and the sealing joint is threadedly connected to the drainage pipe section III.

[0012] Furthermore, the width of the inner annular balloon is 3-5 mm, and the maximum diameter after filling is 2-3 cm; the width of the outer annular balloon is 5-10 mm, and the maximum diameter after filling is 3-5 cm.

[0013] Furthermore, the inner annular balloon and the outer annular balloon are made of elastic synthetic material, and the elastic synthetic material at least includes latex and silicone.

[0014] Furthermore, the outer diameter of the sheath tube is 4-9 mm, and the tube wall thickness is 1-2 mm; the length of the sheath tube is 30-100 cm.

[0015] Furthermore, the sheath tube is made of polyethylene.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] 1. The sheath of the utility model is embedded with an inner core with a guide wire, which makes it easy for the sheath to pass through the gallbladder incision and enter the gallbladder cavity, while avoiding the damage of the sheath or the inner core to the gallbladder mucosa.

[0018] 2. The utility model fills the inner annular balloon and the outer annular balloon to generate elastic pressure on the gallbladder wall, which has the functions of compressing and stopping bleeding and preventing the sheath from shifting, while maintaining the airtightness of the gallbladder and preventing the gallbladder flushing fluid and contents from entering the abdominal cavity.

[0019] 3. The outer annular balloon of the utility model is larger than the inner annular balloon, which provides the sheath with power to continuously enter the gallbladder cavity. The outer annular balloon can produce a squeezing effect on the gallbladder wall, which can further prevent the sheath from shifting.

[0020] 4. The specimen collector of the utility model can collect stones and polyps discharged with the biliary endoscope flushing fluid, making it easy to retain pathological specimens.

[0021] Based on the above reasons, the utility model can be widely promoted in the fields of medical instruments and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 It is a schematic structural diagram of the assembled choledochoscope sheath of the utility model.

[0024] Figure 2 Schematic diagrams of the structures of the various components of the utility model, wherein (a) is a schematic diagram of the structure of the sheath tube, (b) is a schematic diagram of the structure of the sealing joint, (c) is a schematic diagram of the structure of the inner core, and (d) is a schematic diagram of the structure of the.

[0025] Figure 3 It is a structural schematic diagram of removing the inner core of the utility model.

[0026] Figure 4 It is a schematic diagram of the structure of the inner annular balloon filled with the present invention after being placed into the gallbladder cavity.

[0027] Figure 5 It is a schematic structural diagram of the inner annular balloon and the outer annular balloon filled with the utility model after being placed into the gallbladder cavity.

[0028] Figure 6 It is a structural schematic diagram of the working state of the utility model after being placed in the gallbladder cavity.

[0029] In the figure: 1. sheath; 2. inner core; 3. specimen collector; 4. sealing joint;

[0030] 11. Drainage tube segment I; 12. Drainage tube segment II; 13. Drainage tube segment III; 14. Inner annular balloon; 15. Outer annular balloon; 16. Inflating catheter I; 17. Inflating catheter II; 18. Water outlet connector I;

[0031] 21. Head; 22. Body; 23. Rigid guide wire; 24. Base;

[0032] 31. Water outlet connector II. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] like Figure 1-6 As shown, the utility model provides a choledochoscopic gallbladder sheath tube, which relates to a choledochoscopic sheath tube.

[0035] The utility model provides a gallbladder sheath tube for a choledochoscope, comprising a sheath tube 1, an inner core 2, a specimen collector 3 and a sealing joint 4.

[0036] From the head to the tail of the sheath, a drainage tube segment I 11, a drainage tube segment II 12 and a drainage tube segment III 13 which are connected to each other are arranged in sequence; the wall of the drainage tube segment I is concave, and a channel I is arranged inside, and an inner annular balloon 14 and an outer annular balloon 15 are arranged on the outer wall in sequence; a channel II connected to the channel I is arranged inside the drainage tube segment II, and a channel III with one end extending to the channel I and connected to the inner annular balloon and a channel IV with one end extending to the channel I and connected to the outer annular balloon are arranged inside the tube wall; a channel V connected to the channel II is arranged inside the drainage tube segment III, and an inflation catheter I 16 connected to the channel III, an inflation catheter II 17 connected to the channel IV and a water outlet joint I 18 connected to the channel V are arranged on the outer wall of the drainage tube segment III, and threads are arranged on the outer walls of the drainage tube segment III and the water outlet joint I.

[0037] The inner core is installed inside the sheath, and includes a head 21, a body 22 and a tail connected in sequence from head to tail. The head is conical, and the head end of the head passes through the drainage tube segment I. A rigid guide wire 23 with a soft head end is fixed to the head end, and the tail is provided with a base 24 connected to the channel V.

[0038] Water outlet connectors II 31 connected to the water outlet connector I are arranged at both ends of the specimen collector, and a channel VII and a filter screen communicating with the water outlet connector II are arranged inside the specimen collector.

[0039] The sealing joint is connected to the drainage tube section III of the sheath tube, in which a choledochoscope passing valve is arranged.

[0040] The sheath tube with a conical inner core of the utility model is easier to enter the gallbladder cavity through the gallbladder incision; filling the inner annular balloon can prevent the sheath tube from slipping out of the gallbladder incision; after filling the outer annular balloon, the sheath tube can be fixed, and the inner annular balloon and the outer annular balloon generate elastic pressure on the gallbladder incision, which has the effects of compression hemostasis and prevention of sheath tube displacement; the sealing joint can ensure that blood clots, removed polyps and mud-like stones in the gallbladder can enter the specimen collector with the flushing fluid discharged by the choledochoscope, thereby preventing blood clots, removed polyps and mud-like stones from entering the cystic duct or the common bile duct.

[0041] In this embodiment, the width of the inner annular balloon is 3-5 mm, and the maximum diameter after filling is 2-3 cm; the width of the outer annular balloon is 5-10 mm, and the maximum diameter after filling is 3-5 cm. The inner annular balloon and the outer annular balloon are made of latex, silicone or other elastic synthetic materials.

[0042] In this embodiment, the sheath tube is made of polyethylene, the outer diameter of the sheath tube is 4-9 mm, the wall thickness is 1-2 mm; the length of the sheath tube is 30-100 cm.

[0043] The method of using the utility model is as follows: assemble the sheath, inner core, and specimen collector, and connect the negative pressure suction tube. The assembled gallbladder sheath of the choledochoscope is inserted into the abdominal cavity through the abdominal cavity through the abdominal cavity poke card, and the guide wire at the head end of the laparoscopic gallbladder sheath is first inserted into the gallbladder cavity through the gallbladder incision, and the poke card tube segment I is inserted into the gallbladder cavity under the guidance of the inner core. Fill the inner annular balloon and pull back the choledochoscope balloon sheath to make the inner annular balloon close to the inner wall of the gallbladder, and fill the outer annular balloon. Pull out the inner core and connect the sealing joint. The choledochoscope can enter the sheath cavity through one end of the sealing joint, and finally enter the gallbladder to complete the operation.

[0044] After the operation, release the outer annular balloon, then release the inner annular balloon, and withdraw the gallbladder sheath of the choledochoscope from the laparoscope.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A choledochoscope gallbladder sheath, characterized in that: include: A sheath tube (1), an inner core (2), a specimen collector (3) and a sealing joint (4), wherein the sheath tube (1) comprises a drainage tube section I (11), a drainage tube section II (12) and a drainage tube section III (13) which are sequentially connected to each other from the beginning to the end, the outer wall of the drainage tube section I (11) is sequentially provided with an inner annular balloon (14) and an outer annular balloon (15), the outer wall of the drainage tube section III (13) is provided with an inflation conduit I (16), an inflation conduit II (17) and a water outlet joint I (18), the inflation conduit I (16) and the inflation conduit II (17) are respectively connected to the inner annular balloon (14) and the outer annular balloon (15); The inner core (2) is installed inside the sheath tube (1), and comprises a head (21), a body (22) and a tail which are connected in sequence from the head to the tail, wherein the head (21) is conical, and the head end of the head (21) passes through the drainage tube segment I (11), and the head end of the head (21) is fixed with a rigid guide wire (23) with a soft head end; one end of the specimen collector (3) is connected to the water outlet joint I (18), and the sealing joint (4) is connected to the tail side of the drainage tube segment III (13), and a choledochoscope passage valve is arranged inside the sealing joint (4).

2. The choledochoscope gallbladder sheath according to claim 1, characterized in that: The wall of the drainage pipe section I (11) is concave and has a channel I therein; the drainage pipe section II (12) has a channel II therein connected to the channel I; the drainage pipe section III (13) has a channel V therein connected to the channel II; the channels I, II and V are connected to form an installation channel, and the inner core (2) is placed in the installation channel; the tail of the inner core (2) is provided with a base (24) connected to the channel V.

3. The choledochoscope gallbladder sheath according to claim 2, characterized in that: The wall of the drainage tube section II (12) is provided with a channel III, one end of which extends to the channel I and is connected to the inner annular balloon (14), and a channel IV, one end of which extends to the channel I and is connected to the outer annular balloon (15); the inflation catheter I (16) is connected to the channel III, and the inflation catheter II (17) is connected to the channel IV.

4. The choledochoscope gallbladder sheath according to claim 1, characterized in that: The water outlet joint I (18) is connected to the channel V in the drainage pipe section III (13), and the outer wall of the water outlet joint I (18) is provided with a thread. Water outlet joints II (31) are provided at both ends of the specimen collector (3), and the water outlet joint II (31) is threadedly connected to the water outlet joint I (18). A channel VII is provided inside the specimen collector (3), and the channel VII is connected to the water outlet joint II (31).

5. The choledochoscope gallbladder sheath according to claim 1 or 4, characterized in that: A filter screen is arranged inside the specimen collector (3).

6. The choledochoscope gallbladder sheath according to claim 1, characterized in that: The outer wall of the drainage pipe section III (13) is provided with threads, and the sealing joint (4) is threadedly connected to the drainage pipe section III (13).

7. The choledochoscope gallbladder sheath according to claim 1, characterized in that: The width of the inner annular balloon (14) is 3-5 mm, and the maximum diameter after being filled is 2-3 cm; the width of the outer annular balloon (15) is 5-10 mm, and the maximum diameter after being filled is 3-5 cm.

8. The choledochoscope gallbladder sheath according to claim 1 or 7, characterized in that: The inner annular balloon (14) and the outer annular balloon (15) are made of elastic synthetic material, which at least includes latex and silica gel.

9. The choledochoscope gallbladder sheath according to claim 1, characterized in that: The outer diameter of the sheath tube (1) is 4-9 mm, and the tube wall thickness is 1-2 mm; the length of the sheath tube (1) is 30-100 cm.

10. The choledochoscope gallbladder sheath (1) according to claim 1 or 9, characterized in that: The sheath tube (1) is made of polyethylene.

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