Multifunctional calculus removing mesh basket and application thereof

Abstract

The invention provides a multifunctional calculus removing mesh basket and application thereof. The multifunctional calculus removing mesh basket comprises a mesh basket cap, an outer sheath tube, a mesh basket, a connecting tube and a handle, the mesh basket cap is arranged outside the head end of the outer sheath tube, the mesh basket and the connecting tube are arranged in the outer sheath tube, the head end of the mesh basket is connected with the tail end of the mesh basket cap, and the tail end of the mesh basket is connected with the head end of the connecting tube; the connecting tube is inserted into the outer sheath tube through the tail end of the outer sheath tube, the tail end of the connecting tube is connected with the handle, and the handle is located outside the tail end of the outer sheath tube. The calculus removing device has multiple functions, can be directly placed into the common bile duct for calculus removing, can also be placed into the common bile duct, the intrahepatic bile duct and the gallbladder duct under the guide of the guide wire for positioning calculus removing, can be placed into the lithotripsy guide wire through the guide wire channel for lithotripsy when huge calculus cannot be smoothly taken out, and then takes out the lithotripsy.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a multifunctional stone removal basket and applications thereof. Background Art

[0002] Bile duct stones are a common and frequently occurring disease in my country, including gallbladder stones, intrahepatic bile duct stones, and common bile duct stones. Stones blocking the cystic duct or bile duct can induce complications such as acute cholecystitis, acute cholangitis, obstructive jaundice, acute biliary pancreatitis, and even lead to life-threatening septic shock. Long-term stimulation from stones carries the risk of gallbladder and bile duct cancer.

[0003] Endoscopic retrograde cholangiopancreatography (ERCP) is a minimally invasive and commonly used method for treating common bile duct stones using a duodenoscope. A stone retrieval basket is inserted into the common bile duct through the duodenoscope's forceps channel. After the stone is removed, it is dragged into the common bile duct through the duodenal papilla. The following difficulties often exist in clinical stone removal: 1. The stone is large, and it is difficult to remove it through the duodenal papilla after the stone is removed with the stone retrieval basket. The stone needs to be released first and then crushed. Lithotripsy methods include mechanical lithotripsy and laser lithotripsy. The stone is removed by using a stone crushing basket in advance, and the basket is tightened to crush the stone. However, the stone crushing basket sheath is relatively rigid, and it is difficult to insert it into the common bile duct through the duodenal papilla, and even serious complications such as duodenal papilla perforation may occur. The latter uses SpyGlass or Insight Pancreaticobiliary imaging system to enter the common bile duct, and then inserts lithotripsy optical fiber or wire through the forceps channel to crush the stones. However, pancreaticobiliary imaging system is expensive and its clinical promotion is limited; 2. Intrahepatic bile duct stones. Intrahepatic bile duct stones are generally treated with surgical procedures such as liver resection and choledochoscopy. ERCP can also be used to treat intrahepatic bile duct stones, but ordinary stone removal baskets have difficulty entering the target bile duct. Generally, a guidewire is superselectively inserted into the bile duct where the stone is located, and then an over-the-wire stone removal basket is placed under the guidance of the guidewire. The over-the-wire stone removal basket currently used in clinical practice generally leads the guidewire out through the basket cap, and the guidewire does not pass through the outer sheath of the basket. The basket sheath is often at an angle to the guidewire, especially when the curvature of the intrahepatic bile duct is large. The basket sheath often slides into the contralateral bile duct, making it difficult to insert into the intrahepatic bile duct with a large curvature. SpyGlass or Insight Pancreaticobiliary Imaging System is currently an effective method for treating intrahepatic bile duct stones, but it is still faced with the high price that limits its clinical promotion; 3. Difficult stone removal: (1) The stone is embedded in the duodenal papillary sphincter during basket removal. This phenomenon is one of the most dangerous situations in basket stone removal. At this time, the stone cannot be removed and is often difficult to push into the common bile duct to release the stone. The only option is to carry the stone removal basket for surgical operation, crush the stone under choledochoscopy, and then remove the basket; (2) The intrahepatic bile duct stone cannot pass through the narrow bile duct during basket removal. In this case, the basket is difficult to remove. One of the most dangerous situations in the intrahepatic bile duct is that the stones cannot be removed through the narrow bile duct and there is often no space for release. In most cases, the only option is to carry a stone removal basket for surgical operation, remove the liver where the stone is located or use a choledochoscope to enter the bile duct to break up the stone, and finally remove the embedded basket; (3) The stone removed by the basket is embedded in the cystic duct. This phenomenon is one of the most dangerous situations in the basket stone removal. Forcibly pulling out the basket is likely to damage the duodenal papillary sphincter or the cystic duct. If the basket cannot be pulled out, only surgical operation can be selected to cut open the cystic duct to break up the stone and then remove the embedded basket. Summary of the Invention

[0004] In response to the above-mentioned technical problems, a multifunctional stone-removing net basket is provided.

[0005] The technical means adopted in the present invention are as follows:

[0006] A multifunctional stone removal basket comprises: a basket cap, an outer sheath tube, a basket, a connecting tube and a handle, wherein the basket cap is arranged outside the head end of the outer sheath tube, and the basket and the connecting tube are placed inside the outer sheath tube, the head end of the basket is connected to the tail end of the basket cap, and the tail end is connected to the head end of the connecting tube; the connecting tube is inserted into the interior of the outer sheath tube through the tail end of the outer sheath tube, and the tail end of the connecting tube is connected to the handle, and the handle is located outside the tail end of the outer sheath tube.

[0007] Furthermore, the basket cap is made of metal, the head end of the basket cap is a conical structure, and the tail end is a columnar structure.

[0008] Furthermore, the mesh basket is composed of a plurality of metal wires arranged in parallel, one end of the plurality of metal wires is connected to the tail end of the mesh basket cap, and the other end is connected to the head end of the connecting pipe.

[0009] Furthermore, there are four metal wires.

[0010] Furthermore, a guide wire channel is provided inside the multifunctional stone removal basket.

[0011] Furthermore, the guidewire channel includes a guidewire channel I provided inside the basket cap and a guidewire channel II provided inside the connecting tube. The guidewire channel II is used to insert a guidewire or a lithotripsy guide wire, wherein the guidewire is sequentially inserted into the guidewire channel II, between multiple metal wires, and into the guidewire channel I, and passes through the guidewire channel I; the lithotripsy guide wire is inserted between multiple metal wires through the guidewire channel II.

[0012] Furthermore, the outer sheath tube is a single-channel tube with a single channel inside, and the single channel is used to accommodate the basket and the connecting tube.

[0013] Furthermore, the outer sheath is made of plastic.

[0014] Furthermore, the connecting pipe is made of metal.

[0015] The present invention also provides an application of a multifunctional stone removal basket, which is used for routine removal of common bile duct stones, stone removal under guide wire guidance, basket removal of stones embedded in the duodenal papillary sphincter, and treatment of stones embedded in the cystic duct or intrahepatic bile duct.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. The multifunctional lithotripsy basket and its application provided by the present invention can be placed into the common bile duct, intrahepatic bile duct and cystic duct for lithotripsy under the guidance of a guide wire in addition to conventional lithotripsy, and has a wider range of indications.

[0018] 2. The multifunctional stone removal basket provided by the present invention and its application, wherein the guide wire is led out through the basket cap and the outer sheath, makes it easy to place the basket into the intrahepatic bile duct and the cystic duct at a larger angle, thereby increasing the success rate of stone removal.

[0019] 3. The multifunctional stone removal basket and its application provided by the present invention use connecting tubes instead of traditional connecting rods, which ensures the guide wire channel without increasing the outer diameter of the outer sheath of the basket.

[0020] 4. The multifunctional stone removal basket and its application provided by the present invention can be used to treat giant stones. A lithotripsy optical fiber or guide wire is placed through the guide wire channel to perform laser lithotripsy, thereby expanding its scope of use.

[0021] 5. The multifunctional stone removal basket and its application provided by the present invention can be used to remove stones. If stones become stuck during the stone removal process, a lithotripsy optical fiber or guide wire can be inserted through the guide wire channel for laser lithotripsy, and then the stones can be removed. This not only reduces the incidence of complications of the basket stone removal, but also expands its scope of use.

[0022] Based on the above reasons, the present invention can be widely promoted in fields such as medical treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0024] Figure 1 It is a structural schematic diagram of the present invention.

[0025] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0026] Figure 3 Schematic diagram of the basket after being released.

[0027] Figure 4 This is a schematic diagram of the guide wire insertion.

[0028] Figure 5 This is a schematic diagram of the present invention's basket being released to collect stones.

[0029] Figure 6 This is a schematic diagram of the present invention showing the release of the basket to trap stones and insert a lithotripsy guide wire.

[0030] Figure 7 This is a schematic diagram of the lithotripsy wire of the present invention after lithotripsy.

[0031] In the figure: 1. basket cap; 2. outer sheath; 3. basket; 4. connecting tube; 5. handle. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0035] Unless otherwise specified, the relative arrangement of the parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments can have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0036] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0037] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0038] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0039] Example 1

[0040] The present invention provides a multifunctional stone retrieval basket, comprising a basket cap 1, an outer sheath 2, a basket 3, a connecting tube 4, and a handle 5. The basket cap 1 is disposed outside the head end of the outer sheath 2, the basket 3 and the connecting tube 4 are placed inside the outer sheath 2, the head end of the basket 3 is connected to the tail end of the basket cap 1, and the tail end is connected to the head end of the connecting tube 4; the connecting tube 4 is inserted into the interior of the outer sheath 2 through the tail end of the outer sheath 2, and the tail end of the connecting tube 4 is connected to the handle 5, which is located outside the tail end of the outer sheath 2.

[0041] The basket cap 1 is made of metal, with a conical structure at the head end and a columnar structure at the tail end. A guide wire channel I is provided inside the basket cap 1.

[0042] The outer sheath tube 2 is a single-channel tube made of plastic, and a single channel is provided inside thereof, and the single channel is used to accommodate the basket 3 and the connecting tube 4 .

[0043] The basket 3 is composed of four metal wires arranged in parallel, the head ends of the four metal wires are connected to the tail ends of the basket cap 1, and the tail ends are connected to the head ends of the connecting pipes 4.

[0044] The connecting tube 4 is made of metal, the tail end of which is fixed to the handle 5, and a guide wire channel II is provided inside.

[0045] The multifunctional lithotripsy basket has a guidewire channel inside. The guidewire channel consists of the aforementioned guidewire channel I and guidewire channel II. Guidewire channel II is used to insert a guidewire or lithotripsy guidewire. The guidewire is sequentially inserted through guidewire channel II, between the multiple metal wires, into guidewire channel I, and then out of guidewire channel I. The lithotripsy guidewire is inserted through guidewire channel II and between the multiple metal wires.

[0046] The present invention has multiple functions. It can be directly inserted into the common bile duct for stone removal, or it can be inserted into the common bile duct, intrahepatic bile duct and cystic duct under the guidance of a guidewire for positioning and stone removal. When a huge stone cannot be removed smoothly by sheathing, a lithotripsy wire can be inserted through the guidewire channel for lithotripsy, and then the stone can be removed.

[0047] Example 2

[0048] Application of the multifunctional stone-taking basket of the present invention:

[0049] 1. Routine removal of common bile duct stones: insert a multifunctional stone removal basket through the duodenoscope channel, directly insert it into the common bile duct through the duodenal papilla, release the basket to remove the common bile duct stones, and finally pull the stones through the common bile duct into the duodenal cavity.

[0050] 2. Lithotomy under the guidance of a guidewire: The incision knife with a guidewire is used to superselect the intrahepatic bile duct or cystic duct, and a guidewire is left in the intrahepatic bile duct or cystic duct. Under the guidance of the guidewire, a multifunctional stone removal basket is inserted, the basket is released to collect the stone, and then the stone is pulled into the duodenal cavity; after the multifunctional basket passes over the stone, the guidewire is withdrawn, the basket is released to collect the stone, and then the stone is removed.

[0051] 3. Use a basket to remove stones stuck in the duodenal sphincter: If the stone is large, it may become stuck in the duodenal papilla during the stone removal process. Insert a lithotripsy wire through the guidewire channel to crush the stone, and then remove the stone.

[0052] 4. Treatment of impacted stones in the cystic duct or intrahepatic bile duct: A multifunctional basket is used to remove stones in the cystic duct or intrahepatic bile duct. Due to the presence of the Heister valve in the cystic duct and intrahepatic bile duct stenosis, the stones cannot be removed and must be released. If this is not possible, laparotomy or laparoscopy is required. In such cases, a lithotripsy guide wire is inserted into the multifunctional basket's guidewire channel for laser or electrohydraulic lithotripsy, followed by stone removal.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multifunctional stone-taking basket, characterized in that: include: A basket cap (1), an outer sheath tube (2), a basket (3), a connecting tube (4) and a handle (5); the basket cap (1) is arranged outside the head end of the outer sheath tube (2); the basket (3) and the connecting tube (4) are placed inside the outer sheath tube (2); the head end of the basket (3) is connected to the tail end of the basket cap (1), and the tail end is connected to the head end of the connecting tube (4); the connecting tube (4) is inserted into the interior of the outer sheath tube (2) through the tail end of the outer sheath tube (2); the tail end of the connecting tube (4) is connected to the handle (5), and the handle (5) is located outside the tail end of the outer sheath tube (2).

2. The multifunctional stone-removing basket according to claim 1, characterized in that: The basket cap (1) is made of metal, and the head end of the basket cap (1) is in a conical structure, while the tail end is in a columnar structure.

3. The multifunctional stone-removing basket according to claim 1, characterized in that: The mesh basket (3) is composed of a plurality of metal wires arranged in parallel, one end of the plurality of metal wires is connected to the tail end of the mesh basket cap (1), and the other end is connected to the head end of the connecting pipe (4).

4. The multifunctional stone-removing basket according to claim 3, characterized in that: There are four metal wires.

5. The multifunctional stone-removing basket according to claim 3, characterized in that: A guide wire channel is provided inside the multifunctional stone removal net basket.

6. The multifunctional stone-removing basket according to claim 5, characterized in that: The guidewire channel comprises a guidewire channel I provided inside the basket cap (1) and a guidewire channel II provided inside the connecting tube (4). The guidewire channel II is used for inserting a guidewire or a lithotripsy guide wire, wherein the guidewire is sequentially inserted into the guidewire channel II, between the plurality of metal wires, and into the guidewire channel I, and then passes through the guidewire channel I; the lithotripsy guide wire is inserted between the plurality of metal wires through the guidewire channel II.

7. The multifunctional stone-removing basket according to claim 1, characterized in that: The outer sheath tube (2) is a single-channel tube with a single channel provided inside. The single channel is used to accommodate the net basket (3) and the connecting tube (4).

8. The multifunctional stone-removing basket according to claim 1, characterized in that: The outer sheath tube (2) is made of plastic.

9. The multifunctional stone-removing basket according to claim 1, characterized in that: The connecting pipe (4) is made of metal.

10. An application of the multifunctional stone-removing basket according to any one of claims 1 to 9, characterized in that: The multifunctional stone removal basket is used for routine removal of common bile duct stones, stone removal under the guidance of a guide wire, stone removal by using a basket to remove stones embedded in the duodenal papillary sphincter, and treatment of stones embedded in the cystic duct or intrahepatic bile duct.

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