Auxiliary tool for nasal biliary duct diversion

Abstract

The utility model relates to the technical field of medical auxiliary instruments, in particular to an auxiliary tool for nasal biliary duct diversion. The auxiliary tool for nasobiliary duct diversion comprises a handle part, a connecting section, an arc-shaped tube and a traction wire which are sequentially connected, the fixed end of the traction wire is connected with the connecting section, a movable knot is arranged between the free end of the traction wire and the fixed end of the traction wire, and the movable knot surrounds to form a closed ring structure used for sleeving a guide tube. The closed ring structure locks the side wall of the guide pipe along with pulling of the free end of the traction wire, a first opening is formed in the end of the arc-shaped pipe, the movable knot stretches out of the arc-shaped pipe through the first opening, and a second opening used for stretching out of the free end of the traction wire is formed in the side wall of the arc-shaped pipe. According to the auxiliary tool for nasal biliary duct diversion, the end part of the guide tube entering from the nasal cavity can be conveniently and quickly captured, the tube guide under direct vision at the junction of the oral cavity and the nasal cavity is realized, and the difficulty of implementing the nasal biliary duct diversion operation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical auxiliary equipment, in particular to an auxiliary tool for nasobiliary diversion. Background Art

[0002] Clinically, during endoscopic retrograde cholangiopancreatography (ERCP), the conventional approach is through the mouth. When there is stenosis or obstruction in the bile duct, a nasobiliary duct needs to be inserted for continuous drainage of the bile duct, that is, endoscopic nasobiliary drainage (ENBD). In this way, the nasobiliary duct also enters the digestive tract from the mouth, and finally the distal end of the nasobiliary duct reaches and remains in the bile duct. In order to improve the patient's comfort with the tube, the proximal end of the nasobiliary duct usually needs to be diverted to the nasal outlet through the junction of the nasal cavity and the oral cavity in the throat.

[0003] Currently, the diversion operation for the nasobiliary duct is usually performed with the help of a red hollow tube, which is inserted from the nasal cavity to the junction of the oral cavity and the nasal cavity. The hollow tube is then pulled out by hand or with oval forceps. Due to the lack of proprietary tools, the entire process is difficult to operate and also causes great discomfort to the patient.

[0004] After searching, Chinese patent document CN111110986A discloses a single-wire nasobiliary mouth-nose conversion method and a special nasobiliary. Among them, the guide wire loop is inserted into the oral cavity until it touches the throat wall; the guide wire loop is slightly loosened, and the guide wire loop is used to completely occupy the cavity of the pharynx with the help of its own elasticity; the guide wire head is inserted into the unilateral nasal cavity for about 20cm, at which time the rigid part of the guide wire enters the tail end guide wire loop, and the guide wire loop is pulled back to change the direction of the guide wire head; at the same time, the guide wire is sent into the nasal cavity until the guide wire head slides out of the oral cavity; when the rigid part of the guide wire slides out of the oral cavity by 30cm, the guide wire head is inserted into the nasobiliary, the nasobiliary is pinched and sent into the oral cavity, and the guide wire is pulled out through the nasal cavity to lead the nasobiliary out through the nasal cavity.

[0005] However, during clinical use of the above-mentioned single-guidewire nasobiliary mouth-to-nose conversion method, compared with the guidance operation of the hollow tube, it is difficult for medical staff to control the direction of the single guidewire, and it is difficult to control the single guidewire to effectively capture the nasobiliary duct. Repeated operations are required, the success rate is low, and the stimulation to the nasal mucosa is increased. Summary of the invention

[0006] The purpose of the utility model is to provide an auxiliary tool for quickly capturing the end of a guide tube entering from the nasal cavity during a nasobiliary diversion operation, thereby achieving direct tube guidance at the junction of the oral cavity and the nasal cavity, and reducing the difficulty of the nasobiliary diversion operation.

[0007] In order to achieve the above purpose, the utility model adopts the following scheme:

[0008] An auxiliary tool for nasobiliary diversion, comprising a handle portion, a connecting section and an arc-shaped tube connected in sequence, and a traction wire arranged along the arc-shaped tube;

[0009] The fixed end of the traction wire is connected to the connecting section, and a movable knot is arranged between the free end of the traction wire and the fixed end of the traction wire, and the movable knot is surrounded to form a closed loop structure for sleeve-taking the guide tube, and the closed loop structure locks the side wall of the guide tube as the free end of the traction wire is pulled;

[0010] A pulling channel for passing the pulling wire is provided inside the arc tube, a first opening is provided at the end of the arc tube, the movable knot extends out of the arc tube through the first opening, a second opening is provided on the side wall of the arc tube, the second opening is connected to the pulling channel, and the free end of the pulling wire extends out of the arc tube through the second opening.

[0011] Among them, during the implementation of the nasobiliary diversion operation, the guide tube is inserted from the nasal cavity to the junction of the oral cavity and the nasal cavity, and then the arc tube is extended from the oral cavity, and the end of the guide tube is captured by using the movable knot provided on the traction wire. By pulling the free end of the traction wire, the movable knot will gradually tighten, thereby locking the side wall of the guide tube, thereby facilitating the guide tube to be pulled from the junction of the oral cavity and the nasal cavity to the outside of the oral cavity. In this way, the end of the nasobiliary duct is connected to the end of the guide tube, and by pulling the other end of the guide tube, the nasobiliary duct is driven to extend out of the nasal cavity through the junction of the oral cavity and the nasal cavity, thereby completing the nasobiliary diversion operation.

[0012] Preferably, a column is provided on the side wall of the handle, and the axis of the column is arranged perpendicular to the center line of the handle. In this way, the column is used to wrap and temporarily fix the free end of the traction wire, which is conducive to keeping the active knot locked to the side wall of the guide tube, making it convenient for medical staff to operate the handle with one hand to pull the guide tube, thereby preventing the guide tube from falling off from the active knot.

[0013] Preferably, a spiral groove is provided on the side wall of the column. In this way, the spiral groove is used to increase the friction between the traction wire and the side wall of the column, which is conducive to preventing the free end of the traction wire from loosening, thereby ensuring the stability of the active knot clamping the guide tube.

[0014] Preferably, an illumination fiber is arranged inside the arc tube, and the illumination fiber is arranged along the inner wall of the arc tube, and the output end of the illumination fiber points to the first opening. In this way, the illumination fiber is used to transmit the light emitted by the illumination light source to the first opening of the arc tube, so as to form a good illumination for the junction of the oral cavity and the nasal cavity, which is conducive to further reducing the difficulty of operation and improving the success rate of the active knot capturing the guide tube.

[0015] Preferably, a plug interface for connecting an illumination light source is provided on the side wall of the handle, and the plug interface is connected to the illumination optical fiber. In this way, the structural design of the external illumination light source is conducive to reducing the space occupied by the arc tube in the oral cavity, which ensures the operation field of view on the one hand, and facilitates the angle adjustment of the arc tube on the other hand.

[0016] Preferably, the guide tube is a hollow tube, the end of the hollow tube is provided with a rounded corner, and the side wall of the hollow tube is provided with a groove for embedding the traction wire. In this way, the groove is used to form an axial limit for the active knot on the hollow tube, further improving the stability of the active knot locking the hollow tube.

[0017] Preferably, the end of the hollow tube is provided with a socket for inserting into the nasobiliary duct. In this way, the socket facilitates the connection between the hollow tube and the nasobiliary duct.

[0018] Preferably, the traction wire is a steel wire.

[0019] Compared with the prior art, the auxiliary tool for nasobiliary diversion provided by the utility model has the following substantial characteristics and progress: the auxiliary tool for nasobiliary diversion utilizes the design of an arc tube, which conforms to the structure of the oral cavity and is convenient for entering and exiting the oral cavity, and utilizes the movable knot arranged on the traction wire to capture the end of the guide tube. By pulling the free end of the traction wire, the movable knot will gradually tighten, thereby locking the side wall of the guide tube, thereby facilitating the traction of the guide tube from the junction of the oral cavity and the nasal cavity to the outside of the oral cavity, realizing the rapid capture of the end of the guide tube entering from the nasal cavity, and realizing the tube guidance under direct vision at the junction of the oral cavity and the nasal cavity, which greatly reduces the difficulty of implementing the nasobiliary diversion operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of an auxiliary tool for nasobiliary diversion in an embodiment of the utility model.

[0021] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure of an auxiliary tool for nasobiliary diversion from another perspective.

[0022] Figure 3 yes Figure 2 main view.

[0023] Figure 4 yes Figure 2 Bottom view of .

[0024] Figure 5 It is a schematic diagram of the local structure of the hollow tube used as the guide tube in the embodiment of the utility model.

[0025] Figure numerals: 1. handle portion; 2. connecting section; 3. arc tube; 4. traction wire; 5. movable knot; 6. first opening; 7. second opening; 8. column; 9. spiral groove; 10. lighting optical fiber; 11. plug-in port; 12. hollow tube; 13. rounded corner; 14. groove. DETAILED DESCRIPTION

[0026] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings.

[0027] like Figure 1-Figure 4 As shown, an auxiliary tool for nasobiliary diversion is proposed in the embodiment of the utility model, which is intended to quickly capture the end of the guide tube entering from the nasal cavity, realize the tube guidance under direct vision at the junction of the oral cavity and the nasal cavity, and reduce the difficulty of nasobiliary diversion operation.

[0028] An auxiliary tool for nasobiliary diversion proposed in the implementation of the utility model is used to pull the guide tube from the nasal cavity to the outside of the oral cavity, then connect the head end of the nasobiliary duct to the guide tube, and finally pull the guide tube to divert the nasobiliary duct from the oral cavity to the nasal cavity outlet. The auxiliary tool uses the design of the arc tube 3, which conforms to the structure of the oral cavity and is convenient for entering the oral cavity. The auxiliary tool uses the movable knot 5 set on the traction wire 4 to capture the end of the guide tube. By pulling the free end of the traction wire 4, the movable knot 5 will gradually tighten, and then lock the side wall of the guide tube, so as to facilitate the traction of the guide tube from the junction of the oral cavity and the nasal cavity to the outside of the oral cavity, and realize the rapid capture of the end of the guide tube entering from the nasal cavity, and then realize the direct vision of the pipe guide at the junction of the oral cavity and the nasal cavity, which greatly reduces the difficulty of the nasobiliary diversion operation.

[0029] like Figure 1 As shown, an auxiliary tool for nasobiliary diversion includes a handle portion 1, a connecting section 2 and an arc tube 3 connected in sequence, and a traction wire 4 arranged along the arc tube 3. The traction wire 4 is used to lock and pull the guide tube located at the junction of the oral cavity and the nasal cavity. For example, the traction wire 4 is a steel wire.

[0030] like Figure 1 Combination Figure 2 As shown, the fixed end of the traction wire 4 is connected to the connecting section 2. A movable knot 5 is provided between the free end of the traction wire 4 and the fixed end of the traction wire 4. The movable knot 5 is surrounded to form a closed loop structure for sleeve-taking the guide tube. The closed loop structure forms a lock on the side wall of the guide tube as the free end of the traction wire 4 is pulled.

[0031] like Figure 2As shown, the interior of the arc tube 3 is provided with a pulling channel for passing the pulling wire 4. A first opening 6 is provided at the end of the arc tube 3. The movable knot 5 extends out of the arc tube 3 through the first opening 6. A second opening 7 is provided on the side wall of the arc tube 3. The second opening 7 is connected to the pulling channel. The free end of the pulling wire 4 extends out of the arc tube 3 through the second opening 7.

[0032] Among them, Figure 5 As shown, the guide tube is a hollow tube 12. The end of the hollow tube 12 is provided with a rounded corner 13. The side wall of the hollow tube 12 is provided with a groove 14 for embedding the traction wire 4. In this way, the groove 14 is used to form an axial limit for the movable knot 5 on the hollow tube 12, further improving the stability of the movable knot 5 locking the hollow tube 12. For example, the end of the hollow tube 12 is provided with a socket for embedding the nasobiliary duct. The socket facilitates the connection between the hollow tube 12 and the nasobiliary duct.

[0033] In order to further improve the convenience of operation, such as Figure 2 As shown, a column 8 is provided on the side wall of the handle portion 1. The axis of the column 8 is arranged perpendicular to the center line of the handle portion 1. In this way, the column 8 is used to wrap and temporarily fix the free end of the traction wire 4, which is conducive to keeping the active knot 5 locked to the side wall of the guide tube, making it convenient for medical staff to operate the handle portion 1 with one hand to pull the guide tube, thereby preventing the guide tube from falling off from the active knot 5.

[0034] like Figure 1 As shown, a spiral groove 9 is provided on the side wall of the column 8. In this way, the spiral groove 9 is used to increase the friction between the traction wire 4 and the side wall of the column 8, which is conducive to preventing the free end of the traction wire 4 from loosening, thereby ensuring the stability of the active knot 5 clamping the guide tube.

[0035] In order to make the view of the oral cavity and throat clearer, Figure 4 As shown, an illumination optical fiber 10 is arranged inside the arc tube 3. The illumination optical fiber 10 is arranged along the inner wall of the arc tube 3. The output end of the illumination optical fiber 10 points to the first opening 6. In this way, the illumination optical fiber 10 is used to transmit the light emitted by the illumination light source to the first opening 6 of the arc tube 3, which is convenient for forming a good illumination of the junction of the oral cavity and the nasal cavity, which is conducive to further reducing the difficulty of operation and improving the success rate of the active knot 5 to capture the guide tube.

[0036] like Figure 2 Combination Figure 4 As shown, a plug port 11 for connecting an illumination light source is provided on the side wall of the handle portion 1. The plug port 11 is connected to the illumination optical fiber 10. In this way, the structural design of the external illumination light source is conducive to reducing the space occupied by the arc tube 3 in the oral cavity, which ensures the operation field of view on the one hand, and facilitates the angle adjustment of the arc tube 3 on the other hand.

[0037] When using the auxiliary tool for nasobiliary diversion proposed in the embodiment of the utility model, the medical staff first inserts the guide tube from the nasal cavity to the junction of the oral cavity and the nasal cavity, and then extends the arc tube 3 from the oral cavity. The design of the arc tube 3 conforms to the structure of the oral cavity and is convenient for entering the oral cavity. The medical staff holds the handle 1 and uses the movable knot 5 set on the traction wire 4 to capture the end of the guide tube. By pulling the free end of the traction wire 4, the movable knot 5 will gradually tighten, and then lock the side wall of the guide tube. After the movable knot 5 locks the guide tube, the guide tube is pulled from the junction of the oral cavity and the nasal cavity to the outside of the oral cavity. In this way, the end of the nasobiliary duct is connected to the end of the guide tube, and by pulling the other end of the guide tube, the nasobiliary duct is driven to extend from the nasal cavity through the junction of the oral cavity and the nasal cavity, completing the diversion operation of the nasobiliary duct.

[0038] In addition, in the embodiment of the utility model, an auxiliary tool for nasobiliary diversion is provided, wherein the traction wire 4 arranged along the arc tube 3 can be replaced with a controllable grab hook according to actual use needs. The grab hook is arranged at the first opening 6 of the arc tube 3, and the harness for controlling the grab hook extends through the pulling channel of the arc tube 3 and out of the second opening 7. Medical staff control the grab hook to grab or release the end of the guide tube as needed.

[0039] The present invention is not limited to the specific technical solutions described in the above embodiments. In addition to the above embodiments, the present invention may also have other implementation modes. For those skilled in the art, any technical solutions formed by any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An auxiliary tool for nasobiliary diversion, characterized in that: It comprises a handle portion (1), a connecting section (2) and an arc-shaped tube (3) which are connected in sequence, and a traction wire (4) arranged along the arc-shaped tube (3); The fixed end of the traction wire (4) is connected to the connecting section (2), and a movable knot (5) is arranged between the free end of the traction wire (4) and the fixed end of the traction wire (4), and the movable knot (5) is surrounded to form a closed loop structure for sleeve-taking the guide tube, and the closed loop structure locks the side wall of the guide tube as the free end of the traction wire (4) is pulled; The arc tube (3) is provided with a pulling channel for passing the pulling wire (4) inside, the end of the arc tube (3) is provided with a first opening (6), the movable knot (5) extends out of the arc tube (3) through the first opening (6), and the side wall of the arc tube (3) is provided with a second opening (7), the second opening (7) is connected to the pulling channel, and the free end of the pulling wire (4) extends out of the arc tube (3) through the second opening (7).

2. The auxiliary tool for nasobiliary diversion according to claim 1, characterized in that: A column (8) is arranged on the side wall of the handle portion (1), and the axis of the column (8) is arranged perpendicular to the center line of the handle portion (1).

3. The auxiliary tool for nasobiliary diversion according to claim 2, characterized in that: A spiral groove (9) is provided on the side wall of the column (8).

4. The auxiliary tool for nasobiliary diversion according to claim 1, characterized in that: An illumination optical fiber (10) is arranged inside the arc tube (3); the illumination optical fiber (10) is arranged along the inner wall of the arc tube (3); and the output end of the illumination optical fiber (10) points to the first opening (6).

5. The auxiliary tool for nasobiliary diversion according to claim 4, characterized in that: A plug-in port (11) for connecting an illumination light source is provided on the side wall of the handle portion (1), and the plug-in port (11) is connected to the illumination optical fiber (10).

6. The auxiliary tool for nasobiliary diversion according to claim 1, characterized in that: The guide tube is a hollow tube (12), the end of the hollow tube (12) is provided with a rounded corner (13), and the side wall of the hollow tube (12) is provided with a groove (14) for embedding the traction wire (4).

7. The auxiliary tool for nasobiliary diversion according to claim 6, characterized in that: The end of the hollow tube (12) is provided with a socket for inserting into the nasobiliary duct.

8. The auxiliary tool for nasobiliary diversion according to claim 1, characterized in that: The traction wire (4) is a steel wire.

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