CN215384606U

CN215384606U - Be applied to lithotomy device of cholangioscope

Info

Publication number: CN215384606U
Application number: CN202121128992.8U
Authority: CN
Inventors: 冯亚东; 卜迟斌; 施瑞华; 徐伟; 梁燕; 刘洋
Original assignee: Zhongda Hospital of Southeast University
Current assignee: Zhongda Hospital of Southeast University
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2022-01-04
Anticipated expiration: 2031-05-24

Abstract

The utility model discloses a lithotomy device applied to a choledochoscope, which comprises: hose main part, get stone sacculus. The hose main body is provided with an inflation and exhaust channel and a laser transmission channel, one end of the inflation and exhaust channel is communicated with the stone removal balloon, and the other end of the inflation and exhaust channel is communicated with an inflation and exhaust device when in use; the calculus removing saccule is fixed at the front end part of the hose main body; one end of the laser transmission channel extends to the top end of the tip part along the axial direction of the hose body, and the other end of the laser transmission channel is used for being connected with a laser emitting device when in use. According to the calculus removing device, the functions of crushing and removing calculus can be simultaneously realized through the laser transmission channel and the calculus removing saccule during operation, the step of exchanging a stone crushing instrument and a stone removing instrument in the operation is eliminated, the operation time is shortened, and the operation risk is reduced.

Description

Be applied to lithotomy device of cholangioscope

Technical Field

The utility model relates to the field of medical instruments, in particular to a lithotomy device applied to a choledochoscope.

Background

Cholelithiasis is a disease in which stones develop in any part of the biliary tract. Most of the stones are gallstone or mixed stones mainly containing bile pigment, and are better developed at the lower end of the common bile duct. In recent years, the incidence rate of the cholelithiasis in China shows a rising trend, and the enhancement of the research and treatment of the cholelithiasis has very important significance for protecting the life health of people. The treatment modes of the cholelithiasis mainly include the following modes: traditional laparotomy, laparoscopic surgery, pancreaticobiliary calculus removal by Endoscopic Retrograde Cholangiopancreatography (ERCP), extracorporeal shock wave lithotripsy, and litholysis treatment. Among them, the Endoscopic Retrograde Cholangiopancreatography (ERCP) for removing the stone from the pancreaticobiliary duct is known as the best means for treating cholelithiasis because of its advantages of small operation wound, good operation effect and visible rod.

The conventional operation method for pancreaticobiliary calculus removal under Endoscopic Retrograde Cholangiopancreatography (ERCP) is as follows: the method comprises the steps of inserting a duodenoscope into a descending part of duodenum of a patient, enabling the duodenoscope to enter a common bile duct through a retrograde intubation of a duodenal papilla, implanting a guide wire, cutting the duodenal papilla after the guide wire is successfully implanted, enabling the cholangioscope to enter a biliary tract system through the guide wire after the duodenal papilla is cut, probing under the visual field of the cholangioscope and finding out a calculus, then sending the cholecystoscope into a calculus removing balloon, inflating the calculus removing balloon, dragging the calculus into the duodenum, and naturally discharging the calculus. Among them, for larger stones, the stones are taken out only by crushing the stones in advance, and the common method for crushing the stones is to adopt basket crushing or laser crushing. However, the existing stone breaking net basket and the laser for breaking stones have single action, and are difficult to realize simultaneous stone breaking and removing operation, so that different operation instruments need to be switched during the stone breaking and removing operation, the operation time is prolonged, and the operation risk is increased.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a lithotomy device applied to a choledochoscope, which can simultaneously realize lithotomy and lithotomy to reduce instrument connection.

The utility model provides a lithotomy device applied to a choledochoscope, which comprises: hose main part, get stone sacculus. The hose main body is provided with an inflation and exhaust channel and a laser transmission channel, one end of the inflation and exhaust channel is communicated with the stone removal balloon, and the other end of the inflation and exhaust channel is communicated with an inflation and exhaust device when in use; the calculus removing saccule is fixed at the front end part of the hose main body; one end of the laser transmission channel extends to the top end of the tip part along the axial direction of the hose body, and the other end of the laser transmission channel is used for being connected with a laser emitting device when in use.

The lithotomy device applied to the choledochoscope according to the embodiment of the utility model has at least the following beneficial effects: during operation, the laser transmission channel and the calculus removing saccule can simultaneously realize the functions of crushing and removing calculus, and the step of exchanging a stone crushing instrument and a stone removing instrument in the operation is eliminated, so that the operation time is shortened, the operation risk is reduced, and the operation of the calculus removing device is simpler and more convenient.

According to some embodiments of the utility model, the hose body is hollow and cylindrical, and the position of the inflation/deflation channel is any one of completely located in the hollow area of the hose body, partially embedded on the inner side wall of the hose body and attached to the outer side wall of the hose body.

According to some embodiments of the utility model, one end of the inflation/deflation passage is communicated with the inflation/deflation device through a inflation/deflation valve.

According to some embodiments of the utility model, the laser transmission channel is located at any one of completely within the hollow region of the hose body, partially embedded in the inner sidewall of the hose body, and attached to the outer sidewall of the hose body.

According to some embodiments of the utility model, the hose body is further provided with a water delivery channel, one end of the water delivery channel extends to the front end part along the axial direction of the hose body, and the other end of the water delivery channel is used for communicating a water injection device when in use.

According to some embodiments of the present invention, the hose body is hollow and cylindrical, the air charging and discharging channel is located at any one of a position completely located in the hollow area of the hose body, a position partially embedded in the inner sidewall of the hose body and a position attached to the outer sidewall of the hose body, and the laser transmission channel is located at any one of a position completely located in the hollow area of the hose body, a position partially embedded in the inner sidewall of the hose body and a position attached to the outer sidewall of the hose body.

According to some embodiments of the utility model, one end of the water delivery channel is in communication with the water filling device through a flush valve.

According to some embodiments of the utility model, the laser transmission channel is provided with an anti-reflux channel near the tip end, and an anti-reflux pad is provided in the anti-reflux channel.

According to some embodiments of the utility model, the anti-backflow channel is flared and its large end faces outwards.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a first cross-sectional view of the hose body of the embodiment of the present invention;

FIG. 3 is a second cross-sectional view of the hose body of the embodiment of the present invention;

FIG. 4 is a third cross-sectional view of the hose body of the embodiment of the present invention;

fig. 5 is a cross-sectional view of the distal end portion of the hose body of the embodiment of fig. 2.

Reference numerals:

the device comprises a hose body 100, an inflation and exhaust channel 110, an inflation and exhaust valve 111, a laser transmission channel 120, an anti-backflow channel 121, a water transmission channel 130, a flushing valve 131 and a stone removal balloon 200.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise explicitly defined, terms such as arrangement, installation, connection and the like should be broadly construed, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the detailed contents of the technical solutions.

Referring to fig. 1 to 5, a lithotomy device applied to a choledochoscope according to an embodiment of the present invention includes: a hose body 100 and a calculus removal balloon 200.

When the lithotomy device is used, the hose main body 100 is inserted into a biopsy duct of a choledochoscope, and the hose main body 100 extends into a biliary system under the action of external force.

The hose main body 100 is provided with an inflation and exhaust channel 110, and one end of the inflation and exhaust channel 110 is communicated with the calculus removing balloon 200. When the balloon 200 is inflated or evacuated, the other end of the inflation/evacuation channel 110 is connected to an external inflation/evacuation device. When the calculus removing saccule 200 is in an inflated state, the calculus removing saccule is tightly attached to the inner wall of the bile duct, and the gallstone can be pushed out of the biliary system by moving the hose main body 100.

The hose main body 100 is further provided with a laser transmission channel 120, and one end of the laser transmission channel 120 is communicated with the calculus removing balloon 200. One end of the laser transmission passage 120 extends in the axial direction of the hose main body 100 to the tip end of the tip end portion of the hose main body 100. When a large stone needs to be broken in an operation, a laser fiber required for emitting laser is inserted into the laser transmission channel 120, and the laser fiber is connected with a laser emitting device outside the stone taking device. The laser fiber transmits the laser generated by the laser emitting device to the gallstone, the gallstone is broken under the action of the laser, and then the gallstone is taken out by the gallstone taking balloon 200.

The calculus removing balloon 200 is fixed to the distal end of the main tube 100, and when the main tube 100 is extended into the biliary tract system by an external force, the calculus removing balloon 200 is also positioned in the biliary tract system.

Specifically, the preferable dimensions of the relevant parts of the stone extractor are as follows: the length of the hose body 100 is 130 to 150cm, the diameter is 0.8 to 1.2mm, the diameter of the laser fiber 300 is 0.2 to 1.0mm, the volume of the calculus removing balloon 200 is 0.5 to 3.0mL, and the distance between the front end of the calculus removing balloon 200 and the top end of the front end part of the hose body 100 is 0.1 to 5.0 mm.

In some embodiments of the present invention, as shown in fig. 2 to 4, the hose body 100 has a hollow cylindrical shape and an inner diameter of 0.5 to 1.0mm, and the inflation/deflation channel 110 may be disposed completely in the hollow area of the hose body 100, partially embedded in the inner sidewall of the hose body 100, or attached to the outer sidewall of the hose body 100. In this embodiment, it is preferable that the inflation/deflation channel 110 is disposed in the hollow region of the main hose body 100, and a flexible conduit can be selected to connect the lithotomy balloon 200 and the inflation/deflation device. By the design, on one hand, the gas charging and discharging channel 110 can be prevented from scraping the bile duct during operation to cause unnecessary injury to the patient; on the other hand, the tube body 100 can be prevented from being jammed or damaged due to the fact that the air charging and discharging channel 110 scrapes the choledochoscope when the tube body 100 moves. In addition, the structural design can reasonably utilize the space of the hose main body 100 and control the size of the stone extractor.

In some embodiments of the present invention, as shown in fig. 1, one end of the inflation/deflation channel 110 is connected to the inflation/deflation device through an inflation/deflation valve 111, and when the operation requires inflation or deflation of the lithotomy balloon 200, the inflation/deflation valve 111 is opened. Through setting up and filling exhaust valve 111, can reach and fill the exhaust to getting stone sacculus 200 in order, guarantee simultaneously that can not take place gaseous leakage in the in-process of operation.

In some embodiments of the present invention, as shown in fig. 2-4, the laser delivery channel 120 may be disposed entirely within the hollow region of the hose body 100, partially embedded on the inner sidewall of the hose body 100, or attached to the outer sidewall of the hose body 100. Preferably, the laser delivery channel 120 is located in a hollow region of the hose body 100 that extends through the entire hose body 100 such that the associated fittings in the laser delivery channel 120 are protected by the hose body 100 during movement.

In some embodiments of the present invention, the balloon 200 is in a ring shape in the inflated state, and has an arc-shaped surface protruding outward toward the distal end of the main body 100 and an arc-shaped surface recessed inward away from the distal end of the main body 100. Through the design, the defect that stones are easily embedded at the corner between the balloon and the wall of the bile duct due to the appearance of the conventional stone removal balloon can be overcome.

In some embodiments of the present invention, as shown in fig. 1, the hose body 100 is further provided with a water delivery channel 130, and one end of the water delivery channel 130 extends to a tip end portion of the hose body 100 along an axial direction of the hose body 100. When the water injection cleaning is needed in the operation, the other end of the water delivery channel 130 can be communicated with an external water injection device. For tiny silt-like gallstones, a certain amount of normal saline is conveyed into the water conveying channel 130 through the water injection device, and the gallstones can be flushed out of the biliary system; for suppurative cholangitis often accompanied with cholelithiasis, the effects of cleaning pus, relieving inflammation and promoting recovery can be achieved by washing with a large amount of normal saline.

In some embodiments of the present invention, as shown in fig. 2 to 4, the hose body 100 has a hollow cylindrical shape and an inner diameter of 0.5 to 1.0mm, and the inflation/deflation channel 110 may be disposed completely in the hollow area of the hose body 100, partially embedded in the inner sidewall of the hose body 100, or attached to the outer sidewall of the hose body 100, and the laser transmission channel 120 may be disposed completely in the hollow area of the hose body 100, partially embedded in the inner sidewall of the hose body 100, or attached to the outer sidewall of the hose body 100.

In this embodiment, it is preferable that the inflation/deflation passage 110, the laser transmission passage 120, and the water transmission passage 130 are arranged in parallel in the hollow region of the hose main body 100. The water delivery channel 130 and the air charging and discharging channel 110 may be adjacently arranged side by side or oppositely arranged together. The gas charging and discharging passage 110, the laser transmission passage 120 and the water transmission passage 130 are all arranged in the hollow area of the hose main body 100, so that on one hand, the gas charging and discharging passage, the laser transmission passage and the water transmission passage can be prevented from scraping the bile duct to cause unnecessary injury to a patient during an operation, and on the other hand, the gas charging and discharging passage, the laser transmission passage and the water transmission passage 130 can be prevented from scraping the choledochoscope to cause the jam or damage of the hose main body 100 during the movement of the hose main body 100. In addition, the structural design can reasonably utilize the space of the hose main body 100 and control the size of the stone extractor.

In some embodiments of the present invention, as shown in fig. 1, one end of the water delivery channel 130 is connected to an external water injection device through a flush valve 131, when a surgery needs to be performed with water injection cleaning, the flush valve 131 is opened and water is injected into the water delivery channel 130, and the flush valve 131 can prevent the backflow problem when the external water injection device is at a negative pressure relative to the water delivery channel 130, thereby reducing the risk of the surgery.

In some embodiments of the present invention, as shown in fig. 5, the laser transmission channel 120 is provided with a backflow prevention channel 121 near the tip end of the hose main body 100, and a backflow prevention pad is provided in the backflow prevention channel 121. By providing the backflow prevention channel 121 and the backflow prevention pad, the liquid in the biliary tract system can be prevented from flowing backward into the laser transmission channel 120.

In some embodiments of the present invention, the backflow-preventing channel 121 is in a bell mouth shape, and the large end of the backflow-preventing channel 121 faces outwards, and the backflow-preventing pad is disposed in the region where the small end of the backflow-preventing channel 121 transitions to the large end, so as to effectively prevent the liquid in the biliary tract system from flowing backward into the laser transmission channel 120.

The general procedure for performing the operation using the lithotomy device is described in detail below: the head end of the duodenoscope reaches the papilla of the duodenum, the guide wire is extended out, the guide wire is inserted into a biliary tract system, and then the duodenoscope is switched into a cutting knife through the guide wire, and the duodenoscope exits after the papilla is cut by the cutting knife. The dilatation balloon is placed through the guide wire, and the dilatation balloon is withdrawn after the incision of the duodenal papilla is enlarged. The endoscope of the choledochoscope enters the common bile duct from the incision of the duodenal papilla under the traction of the guide wire, and a doctor uses the endoscope of the choledochoscope to gradually explore the cystic duct, the common hepatic duct, the left hepatic duct, the right hepatic duct and other parts upwards. When the gallstone is found, the gallstone taking device is placed in a biopsy channel of the choledochoscope, the laser optical fiber inserted into the laser transmission channel 120 is connected to an external laser emitting device, then laser stone breaking operation is carried out on the gallstone, after the gallstone is broken, the exhausted gallstone taking balloon 200 is pushed to the front of the gallstone, then the gallstone taking balloon 200 is inflated and pulled backwards until the gallstone is pushed out into the duodenum, and at the moment, the gallstone can be naturally discharged along with excrement.

The following describes in detail the procedure for performing an operation using the lithotomy device for a patient with gallstones with a severe infection: the head end of the duodenoscope reaches the duodenal papilla and then extends out of the guide wire, the guide wire is inserted into a biliary tract system, the duodenal papilla is cut by the guide wire and then is retreated to form the incision knife, at the moment, visible pus is gushed out and submerges the visual field, the guide wire can be led into the stone taking device, a proper amount of physiological saline is flushed into an operation area through the water delivery channel 130 for washing, the stone taking device is retreated after the visual field is seen clearly, then the dilatation balloon is placed through the guide wire, and the balloon is retreated after the duodenal papilla is dilated. The choledochoscope follows a guide wire, enters a common bile duct through the cut papilla, then is flushed with a proper amount of normal saline through the water delivery channel 130 to flush a bile duct system, is explored upwards step by step, after biliary calculus is searched, the biliary calculus is placed into the choledochoscope through a biopsy channel of the choledochoscope, firstly, a laser optical fiber inserted into the laser transmission channel 120 is connected to an external laser emitting device, then, the laser calculus smashing operation is carried out on the biliary calculus, after the biliary calculus is smashed, the exhausted calculus removing balloon 200 is sent to the front of the biliary calculus, then, the calculus removing balloon 200 is inflated and pulled backwards until the biliary calculus is pushed out into the duodenum, and at the moment, the biliary calculus can be naturally discharged along with excrement. For small silt-like gallstones, a certain amount of normal saline is flushed through the water delivery channel 130, so that the gallstones can be flushed out of the bile duct system. After the operations of breaking and removing the stones are finished, the biliary tract system is flushed again, so that the effects of cleaning pus, relieving inflammation and promoting recovery can be achieved.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a be applied to lithotomy device of choledochoscope which characterized in that includes:

a hose body (100) for being inserted into a biopsy channel of a choledochoscope and extending into a biliary system under the action of external force when in use;

the lithotomy balloon (200) is fixed at the front end part of the hose main body (100), an inflation and exhaust channel (110) and a laser transmission channel (120) are arranged on the hose main body (100), one end of the inflation and exhaust channel (110) is communicated with the lithotomy balloon (200), and the other end of the inflation and exhaust channel (110) is used for being communicated with an inflation and exhaust device when in use; one end of the laser transmission channel (120) extends to the top end of the tip part along the axial direction of the hose main body (100), and the other end of the laser transmission channel (120) is used for connecting a laser emitting device when in use.

2. The lithotomy device applied to a choledochoscope of claim 1, wherein the hose body (100) is hollow and cylindrical, and the position of the inflation/deflation channel (110) is any one of completely located in the hollow area of the hose body (100), partially embedded on the inner sidewall of the hose body (100) and attached to the outer sidewall of the hose body (100).

3. The lithotomy device applied to the choledochoscope of claim 2, wherein one end of the inflation and deflation channel (110) is communicated with the inflation and deflation device through an inflation and deflation valve (111).

4. The lithotomy device applied to the choledochoscope, according to claim 2 or 3, wherein the position of the laser transmission channel (120) is any one of completely located in the hollow region of the hose body (100), partially embedded on the inner side wall of the hose body (100) and attached to the outer side wall of the hose body (100).

5. The lithotomy device applied to the choledochoscope of claim 1, wherein a water delivery channel (130) is further arranged on the hose body (100), one end of the water delivery channel (130) extends to the tip along the axial direction of the hose body (100), and the other end of the water delivery channel (130) is used for communicating a water injection device in use.

6. The lithotomy device applied to a choledochoscope, according to claim 5, characterized in that the hose body (100) is in a hollow cylindrical shape, and the water delivery channel (130) is completely located in the hollow area of the hose body (100).

7. The lithotomy device applied to a choledochoscope according to claim 6, wherein the position of the gas filling and exhausting channel (110) is any one of completely located in the hollow region of the hose body (100), partially embedded on the inner sidewall of the hose body (100) and attached to the outer sidewall of the hose body (100), and the position of the laser transmission channel (120) is any one of completely located in the hollow region of the hose body (100), partially embedded on the inner sidewall of the hose body (100) and attached to the outer sidewall of the hose body (100).

8. The lithotomy device applied to the choledochoscope according to any one of claims 5 to 7, characterized in that one end of the water delivery channel (130) is communicated with the water injection device through a flush valve (131).

9. The lithotomy device applied to the choledochoscope according to any one of claims 5 to 7, characterized in that an anti-backflow channel (121) is arranged at the position, close to the tip, of the laser transmission channel (120), and an anti-backflow cushion is arranged in the anti-backflow channel (121).

10. The lithotomy device applied to the choledochoscope of claim 9, wherein the anti-backflow channel (121) is flared and its large end faces outwards.