Rotatable calculus removing mesh basket with directional barrier

Abstract

The utility model relates to a rotatable calculus removing mesh basket with a directional barrier, which comprises an outer tube, and a first inhaul cable cavity and a second inhaul cable cavity are formed in the outer tube; the handle assembly is mounted at the rear end of the outer tube, and the handle assembly comprises a first handle and a second handle; the mesh basket assembly comprises a mesh basket composed of a plurality of mesh wires, an inner guide head and a first inhaul cable; the net bag assembly comprises two net bag wires, a net bag, a second inhaul cable and an outer guide head; and the inner guide head is rotationally connected with the outer guide head. A multi-cavity-channel and double-handle structure is adopted, calculi are easily extracted by means of the net basket assembly, the calculi are easily wrapped by means of the net bag assembly, the pancreatic duct opening position can be reversely shielded in the calculi extraction process, and the protection effect is achieved.

Description

Technical Field

[0001] The utility model relates to medical equipment, in particular to a rotatable stone-removing net basket with a directional barrier. Background Art

[0002] Through endoscopic retrograde cholangiopancreatography (ERCP) + endoscopic sphincterotomy (EST), common bile duct stone removal surgery is performed under endoscopy. Stone removal basket products will be used during the operation. The problems with most stone removal baskets on the market are: when performing ERCP + EST surgery, most of the stone removal baskets are single-lumen (single basket lumen) or double-lumen with a quick exchange port (an additional guide wire lumen on the basket lumen).

[0003] When the choledochoscope passes through the duodenal papilla and reaches the upper part of the common bile duct, it will pass through the pancreatic duct. Bile duct stones vary in size. If you encounter large stones, laser lithotripsy is also required, which will produce more stones or small debris. If no protective measures are taken, the stones or debris will pass through the pancreatic duct and cause pancreatitis. The improved product can combine the two instruments at the same time, and play a certain shielding role by pushing, pulling and rotating different handles, reducing the situation of stones passing through the pancreatic duct. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and provide a rotatable stone removal basket with a directional barrier to solve the problem that when the existing stone removal basket is used for common bile duct stone removal surgery under endoscopy, the crushed stones or debris removed by the basket may pass through the pancreatic duct and cause pancreatitis.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] Provided is a rotatable stone extraction basket with a directional barrier, comprising:

[0007] An outer tube, wherein a first cable cavity and a second cable cavity are formed in the outer tube;

[0008] A handle assembly, mounted at the rear end of the outer tube, the handle assembly comprising a first handle and a second handle;

[0009] A net basket assembly, the net basket assembly comprising a net basket composed of a plurality of net wires, an inner guide head and a first cable, the front end of each net wire is fixedly connected to the inner guide head, the rear end of each net wire is fixedly connected to the front end of the first cable, the rear end of the first cable is fixedly connected to the first handle, and the first handle is suitable for driving the net basket to rotate and move longitudinally;

[0010] A net bag assembly, the net bag assembly comprising two net bag wires, a net, a second cable and an outer guide head, the two net bag wires are fixedly connected to the edge of the net, the two net bag wires and the front end of the net are fixedly connected to the outer guide head, the two net bag wires and the rear end of the net are fixedly connected to the second cable, a net bag opening is formed between the two net bag wires, a second handle is provided at the rear end of the second cable, and the second handle is suitable for driving the net to rotate and move longitudinally;

[0011] The inner guide head is rotatably connected with the outer guide head.

[0012] Furthermore, a first butt-jointed tube is arranged between the rear end of each mesh wire and the first cable, the front end of the first butt-jointed tube is crimped to each mesh wire, and the rear end of the first butt-jointed tube is crimped to the first cable.

[0013] Furthermore, a second pair of pipes is arranged between the two net bag wires and the rear end of the bag net and the second cable, the front end of the second pair of pipes is crimped with the two net bag wires and the rear end of the bag net, and the rear end of the second pair of pipes is crimped with the second cable.

[0014] Furthermore, the outer tube is a three-lumen tube, and the third lumen is an injection lumen.

[0015] Furthermore, a T-shaped clamping column is formed at the front end of the inner guide head, a T-shaped clamping groove is provided inside the outer guide head, and the T-shaped clamping column is embedded in the T-shaped clamping groove, so that a rotational fit is formed between the inner guide head and the outer guide head.

[0016] The beneficial effects of the utility model are:

[0017] The utility model provides a rotatable stone removal net basket with a directional barrier, which adopts a multi-cavity and double-handle structure. The net basket component is easy to collect stones, and the net bag component is easy to wrap stones. The position of the pancreatic duct opening can be reversely blocked during the stone removal process to play a protective role. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of a rotatable stone-taking net basket with a directional barrier according to the utility model;

[0020] Figure 2 It is a state diagram of the basket assembly and the net bag assembly taking stones;

[0021] Figure 3 is a schematic diagram of a net basket assembly and a net bag assembly;

[0022] Figure 4 It is a schematic diagram of the basket assembly;

[0023] Figure 5 It is a schematic diagram of the inner seeker and the outer seeker;

[0024] Among them, 1. External management;

[0025] 2. handle assembly, 21. first handle, 22. second handle;

[0026] 3. basket assembly, 31. mesh, 32. inner guide head, 321. T-shaped clamping column, 33. first cable;

[0027] 4. Net bag assembly, 41. Net bag wire, 42. Net, 43. Second cable, 44. External guide head;

[0028] 51, first pair of pipes, 52, second pair of pipes;

[0029] 6. Stones. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments 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.

[0031] The present application provides a rotatable stone-removing net basket with a directional barrier, which is described in detail below. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments of the present application. In the following embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0032] In order to solve the technical problem in the prior art that during endoscopic common bile duct stone removal surgery, the crushed stones or debris removed by the basket may pass through the pancreatic duct and cause pancreatitis, an embodiment of the present application provides a rotatable stone removal basket with a directional barrier, which is described in detail below.

[0033] like Figures 1 to 5 As shown, a rotatable stone-removing basket with a directional barrier comprises

[0034] An outer tube 1, wherein a first cable lumen and a second cable lumen are formed in the outer tube 1;

[0035] A handle assembly 2, mounted at the rear end of the outer tube 1, the handle assembly 2 comprising a first handle 21 and a second handle 22;

[0036] A net basket assembly 3, the net basket assembly 3 comprises a net basket composed of a plurality of net wires 31, an inner guide head 32 and a first cable 33, the front end of each net wire 31 is fixedly connected to the inner guide head 32, the rear end of each net wire 31 is fixedly connected to the front end of the first cable 33, the rear end of the first cable 33 is fixedly connected to the first handle 21, and the first handle 21 is suitable for driving the net basket to rotate and move longitudinally;

[0037] The net bag assembly 4 includes two net bag wires 41, a net 42, a second cable 43 and an outer guide head 44. The two net bag wires 41 are fixedly connected to the edge of the net 42. The two net bag wires 41 and the front end of the net 42 are fixedly connected to the outer guide head 44. The two net bag wires 41 and the rear end of the net 42 are fixedly connected to the second cable 43. A net bag opening is formed between the two net bag wires 41. A second handle 22 is provided at the rear end of the second cable 43. The second handle 22 is suitable for driving the net 42 to rotate and move longitudinally.

[0038] The inner guide head 32 is rotatably connected to the outer guide head 44 .

[0039] Specifically, as an optional implementation in this embodiment, Figure 1 As shown, a first butt-joint pipe 51 is disposed between the rear end of each mesh wire 31 and the first cable 33 , the front end of the first butt-joint pipe 51 is crimped to each mesh wire 31 , and the rear end of the first butt-joint pipe 51 is crimped to the first cable 33 .

[0040] The first butt joint tube 51 is made of a stainless steel tube. The rear end of each mesh wire 31 is inserted into the first butt joint tube 51 and then compressed. The front end of the first cable 33 is inserted into the first butt joint tube 51 and then compressed.

[0041] Similarly, a second pair of pipes 52 is arranged between the two net bag wires 41 and the rear end of the net 42 and the second cable 43 , and the front end of the second pair of pipes 52 is crimped to the two net bag wires 41 and the rear end of the net 42 , and the rear end of the second pair of pipes 52 is crimped to the second cable 43 .

[0042] The second butt joint 52 is also made of stainless steel pipe. The two net bag wires 41 and the rear end of the bag net 42 are inserted into the second butt joint 52 and compressed. The front end of the second cable 43 is inserted into the second butt joint 52 and compressed.

[0043] Specifically, as an optional implementation in this embodiment, Figure 1 As shown, the outer tube 1 is a three-lumen tube, and the third lumen is a liquid injection lumen.

[0044] Specifically, as an optional implementation in this embodiment, Figure 5As shown, a T-shaped clamping column 321 is formed at the front end of the inner guide head 32, and a T-shaped clamping groove is formed inside the outer guide head 44. The T-shaped clamping column 321 is embedded in the T-shaped clamping groove to form a rotational fit between the inner guide head 32 and the outer guide head 44.

[0045] The handle assembly 2 is a four-way tube, the front end of which is fixedly connected to the rear end of the outer tube 1. The four-way tube is provided with a liquid injection port, and the liquid injection hole is connected to the liquid injection cavity in the outer tube 1. In addition, two handle channels are provided for installing the first handle 21 and the second handle 22.

[0046] The first cable 33 and the second cable 43 are respectively passed through the outer tube 1 without interfering with each other. The net basket assembly 3 and the net bag assembly 4 are only connected in rotation between the inner guide head 32 and the outer guide head 44 .

[0047] Pushing and pulling the first handle 21 can drive the basket to move forward and backward, and rotating the first handle 21 can drive the basket to rotate, so that the stone 6 can be placed in the opening on one side of the basket.

[0048] Pushing and pulling the second handle 22 can drive the net bag assembly 4 to move forward and backward, and drive the net bag opening to rotate in a certain direction.

[0049] In this embodiment, the multiple mesh wires 31 in the basket assembly 3 are all made of nickel-titanium alloy, that is, memory metal, which can restore the memory shape when reaching a predetermined temperature after entering the human body.

[0050] The two net wires 41 of the net bag assembly 4 are also made of nickel-titanium alloy, and the net 42 is made of nylon material.

[0051] The utility model uses the stone-taking net basket:

[0052] 1. Pull the first handle 21 and the second handle 22 at the same time to retract the basket assembly 3 and the net bag assembly 4 into the outer tube 1. After X-ray observation, insert the outer tube 1 through the choledochoscopic endoscope to the position of the stone 6;

[0053] 2. Push and pull the two handles to extend the basket assembly 3 and the net bag assembly 4 out of the outer tube 1, rotate the first handle 21, and put the stone 6 into the opening position on one side of the basket;

[0054] 3. Slowly withdraw the basket and the stone 6. Under X-ray, rotate the first handle 21 or the second handle 22 at the same time to adjust the direction of the basket and the net bag opening, wrap the basket with the bag net 42, and withdraw the duodenal papilla.

[0055] The advantages of the utility model of a rotatable stone-taking net basket with a directional barrier are:

[0056] When the stone 6 is collected, the guide head adopts a double-layer structure, and the net basket and the net bag can pass through the lesion at the same time. Depending on the direction of the stone 6, the net basket head and the net bag can be rotated separately. The net basket head adopts a directional opening structure, which is easy to collect the stone 6. When the stone 6 is successfully collected and withdrawn from the duodenal papilla, the direction of the net bag is controlled by the net bag handle to wrap the net basket with the stone 6, and the pancreatic duct opening is blocked to remove the stone 6.

[0057] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0058] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0060] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0061] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0062] In addition, each functional unit in each embodiment of the present utility model may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0063] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A rotatable stone-removing basket with a directional barrier, characterized in that: include An outer tube, wherein a first cable cavity and a second cable cavity are formed in the outer tube; A handle assembly, mounted at the rear end of the outer tube, the handle assembly comprising a first handle and a second handle; A net basket assembly, the net basket assembly comprising a net basket composed of a plurality of net wires, an inner guide head and a first cable, the front end of each net wire is fixedly connected to the inner guide head, the rear end of each net wire is fixedly connected to the front end of the first cable, the rear end of the first cable is fixedly connected to the first handle, and the first handle is suitable for driving the net basket to rotate and move longitudinally; A net bag assembly, the net bag assembly comprising two net bag wires, a net, a second cable and an outer guide head, the two net bag wires are fixedly connected to the edge of the net, the two net bag wires and the front end of the net are fixedly connected to the outer guide head, the two net bag wires and the rear end of the net are fixedly connected to the second cable, a net bag opening is formed between the two net bag wires, a second handle is provided at the rear end of the second cable, and the second handle is suitable for driving the net to rotate and move longitudinally; The inner guide head is rotatably connected with the outer guide head.

2. The rotatable stone-removing basket with directional barrier according to claim 1 is characterized in that: A first butt-joint pipe is arranged between the rear end of each mesh wire and the first cable, the front end of the first butt-joint pipe is crimped to each mesh wire, and the rear end of the first butt-joint pipe is crimped to the first cable.

3. The rotatable stone-removing basket with directional barrier according to claim 1 is characterized in that: A second butt joint is arranged between the two net bag wires and the rear end of the bag net and the second cable, the front end of the second butt joint is crimped with the two net bag wires and the rear end of the bag net, and the rear end of the second butt joint is crimped with the second cable.

4. The rotatable stone-removing basket with directional barrier according to claim 1 is characterized in that: The outer tube is a three-lumen tube, and the third lumen is a liquid injection lumen.

5. The rotatable stone-removing basket with directional barrier according to claim 1 is characterized in that: A T-shaped clamping column is formed at the front end of the inner guide head, a T-shaped clamping groove is provided inside the outer guide head, and the T-shaped clamping column is embedded in the T-shaped clamping groove, so that a rotational fit is formed between the inner guide head and the outer guide head.

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