Nasobiliary duct connector

Abstract

The utility model provides a nasobiliary duct connector which comprises a connector cap and an inner core, the connector cap comprises a channel I and a channel II which are sequentially communicated, a nasobiliary duct is inserted into the channel I and the channel II, and the inner wall of the channel I and the inner wall of the channel II are provided with a first thread and a second thread respectively. The inner core comprises a head part, a body part and a tail part which are sequentially connected from head to tail, the outer wall of the head part is provided with a third thread used for being connected with the channel II, and the third thread is connected with the second thread in a matched mode; a metal connecting tube is arranged in a tube cavity of the inner core, the tail end of the metal connecting tube is attached to a channel in the inner core, the tube section, extending out of the inner core, of the metal connecting tube is a head end, the head end is used for being inserted into a tube cavity at one end of a nasobiliary duct, and a fourth thread is arranged on the outer wall of the head end; the outer wall of the tail portion is provided with a protruding fifth thread used for being connected with a drainage bag with a threaded connector. The nasobiliary tube is used for connecting the nasobiliary tube and the drainage bag, the nasobiliary tube is firmly connected, extrusion deformation is avoided, and bile drainage is easier.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a nasobiliary duct connector. Background Art

[0002] Endoscopic nasobiliary drainage is widely used to treat common bile duct stones, acute suppurative cholangitis, obstructive jaundice, bile leakage, and other diseases. The tail of the nasobiliary duct is a smooth, single-channel tube that is often connected to a drainage bag to collect bile.

[0003] There are generally two ways to connect the nasobiliary duct to the drainage bag. One is to directly insert the tail of the nasobiliary duct into the drainage tube of the drainage bag, and fix the connection between the nasobiliary duct and the drainage tube with tape. However, the gap between the nasobiliary duct and the drainage tube of the drainage bag is large, which can easily lead to bile leakage. The other is to use a connector to connect the nasobiliary duct and the drainage bag. The connector currently provided with the nasobiliary duct is divided into two parts: the connector cap and the inner core. However, there are the following problems when using the above connector to connect the nasobiliary duct and the drainage bag: 1. There is a rubber pad in the connector cap. The rubber pad is squeezed between the inner core and the connector cap, and the rubber pad is deformed, thereby squeezing the nasobiliary duct to fix the nasobiliary duct. However, the nasobiliary duct is easily squeezed out of dents by the rubber pad. The squeezed and narrowed nasobiliary duct can lead to poor bile drainage, or small stones and dents block the nasobiliary duct, which is not conducive to the outflow of bile and recovery from the disease; 2. There is a thread on the connecting cap. When the connecting cap and the inner core are loosened, the friction of the connecting cap is small, and the inner core is difficult to separate from the connecting cap. Utility Model Content

[0004] In response to the above technical problems, a nasobiliary duct connector is provided. The technical means adopted by the present invention are as follows:

[0005] A nasobiliary duct connector comprises: a connector cap and an inner core, wherein the connector cap comprises a channel I and a channel II which are sequentially connected, the nasobiliary duct is inserted into the channel I and the channel II, and the inner walls of the channel I and the channel II are respectively provided with a first thread and a second thread;

[0006] The inner core includes a head, a body and a tail connected in sequence from head to tail. The outer wall of the head is provided with a third thread for connecting to channel II, and the third thread is connected in cooperation with the second thread; a metal connecting tube is provided in the lumen of the inner core, and the tail end of the metal connecting tube is fitted with the channel in the inner core. The section of the metal connecting tube extending out of the inner core is the head end, which is used to be inserted into the lumen of one end of the nasobiliary duct, and the outer wall of the head end is provided with a fourth thread; the outer wall of the tail is provided with a raised fifth thread for connecting a drainage bag with a threaded joint.

[0007] Furthermore, the joint cap is a single-channel tube, the channel I and the channel II form a stepped channel, and the inner diameter of the channel II is larger than the inner diameter of the channel I.

[0008] Furthermore, the outer wall of the joint cap is provided with symmetrical first side wings.

[0009] Furthermore, the outer wall of the body is provided with symmetrical second side wings.

[0010] Furthermore, the head end of the metal connecting pipe has a tapered structure that gradually contracts in a direction away from the head end.

[0011] Furthermore, the inner core is a single-channel tube with a single channel inside, and the single channel is connected to the lumen of the nasobiliary duct and the drainage tube of the drainage bag.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. The joint cap and the inner core tube wall of the utility model are both provided with side wings, which makes it easier to connect and separate the joint cap and the inner core.

[0014] 2. The utility model has a metal connecting tube in the inner core, and the nasobiliary duct is sleeved on the metal connecting tube, so that the nasobiliary duct will not be squeezed and deformed, and bile drainage is smoother.

[0015] 3. In the present invention, threads are provided on the lumen wall of the joint cap and the outer wall of the metal connecting tube to prevent displacement of the nasobiliary duct.

[0016] 4. The metal connecting tube connected to the nasobiliary duct of the present invention is tapered, which facilitates the insertion of the metal connecting tube into the nasobiliary duct. The compression of the joint cap on the nasobiliary duct generates a force to fix the nasobiliary duct.

[0017] Based on the above reasons, the present invention can be widely promoted in the fields of medical treatment and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 This is a structural diagram of the connector cap of the utility model.

[0020] Figure 2 It is a structural schematic diagram of the inner core of the utility model.

[0021] Figure 3 This is a schematic diagram of inserting the connector cap into the nasobiliary duct of the utility model.

[0022] Figure 4This is a schematic diagram of the connection between the nasobiliary duct inserted into the connector cap and the inner core of the utility model.

[0023] Figure 5 This is a schematic diagram of the inner core of the present invention fully entering the connector cap.

[0024] In the figure: 1, joint cap; 11, channel I; 12, channel II; 13, first side wing; 2, inner core; 21, head; 22, body; 23, tail; 24, metal connecting pipe; 25, second side wing. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, 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 embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] The utility model provides a nasobiliary duct connector, comprising a connector cap 1 and an inner core 2.

[0027] The joint cap 1 is a single-channel tube, including channel I 11 and channel II 12 connected in sequence. The inner walls of channel I 11 and channel II 12 are respectively provided with a first thread and a second thread. Channel I 11 and channel II 12 form a stepped channel. The inner diameter of channel II 12 is larger than the inner diameter of channel I 11; a symmetrical first side wing 13 is provided on the tube wall of the joint cap 1.

[0028] The inner core 2 is a single-channel tube, consisting of a head 21, a body 22, and a tail 23, which are connected in sequence from beginning to end. The body 22 is provided with symmetrical second winglets 25, while the head 21 is provided with a third thread that connects to channel II 12 of the connector cap 1. A metal connecting tube 24 is located within the lumen of the inner core 2. The tail end of the metal connecting tube 24 fits within the channel within the inner core 2. The head end of the metal connecting tube 24 (the section of the tube extending outside the inner core 2) is tapered (i.e., it tapers away from the head 21), and the head end of the metal connecting tube 24 is provided with a fourth thread. The tail 23 is provided with a raised fifth thread that allows for connection to a drainage bag with a threaded connector. The inner core 2 has a single channel inside, which communicates with the lumen of the nasobiliary duct and the drainage tube of the drainage bag.

[0029] The utility model is used for connecting the nasobiliary duct and the drainage bag. The nasobiliary duct is firmly connected without being squeezed and deformed, and bile drainage is more convenient.

[0030] 1. Connecting the nasobiliary duct and drainage bag: First, separate the connector cap from the inner core. Insert the nasobiliary duct through the small hole in the connector cap and lead it out through the large hole. Then, insert the tapered metal connecting tube of the inner core into the lumen of the nasobiliary duct. Finally, rotate the inner core into the connector cap. As the connector cap rotates, its inner wall exerts increasing pressure on the nasobiliary duct on the tapered metal connecting tube until the inner core is completely inserted into the connector cap. Then, put the connecting cap on the drainage bag's drainage tube onto the tail connector of the inner core.

[0031] 2. Release the nasobiliary duct and drainage bag: First, loosen the connector cap and inner core. At this point, the nasobiliary duct can be pulled out from the connector cap lumen and the inner core metal connecting tube wall. Alternatively, completely loosen the connector cap and inner core, pull the nasobiliary duct off the inner core metal connecting tube, and finally pull it out of the connector cap lumen.

[0032] 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 deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A nasobiliary duct connector, characterized in that: include: A connector cap (1) and an inner core (2), wherein the connector cap (1) comprises a channel I (11) and a channel II (12) which are connected in sequence, the nasobiliary duct is inserted into the channel I (11) and the channel II (12), and the inner walls of the channel I (11) and the channel II (12) are respectively provided with a first thread and a second thread; The inner core (2) comprises a head (21), a body (22) and a tail (23) connected in sequence from head to tail, the outer wall of the head (21) is provided with a third thread for connecting to the channel II (12), and the third thread is connected in cooperation with the second thread; a metal connecting tube (24) is provided in the lumen of the inner core (2), the tail end of the metal connecting tube (24) is fitted with the channel in the inner core (2), the tube section of the metal connecting tube (24) extending out of the inner core (2) is the head end, and the head end is used to be inserted into the lumen of one end of the nasobiliary duct, and the outer wall of the head end is provided with a fourth thread; the outer wall of the tail (23) is provided with a raised fifth thread for connecting to a drainage bag with a threaded joint.

2. The nasobiliary connector according to claim 1, characterized in that: The joint cap (1) is a single-channel tube, the channel I (11) and the channel II (12) form a stepped channel, and the inner diameter of the channel II (12) is larger than the inner diameter of the channel I (11).

3. The nasobiliary connector according to claim 1, characterized in that: The outer wall of the joint cap (1) is provided with symmetrical first side wings (13).

4. The nasobiliary connector according to claim 1, characterized in that: The outer wall of the body (22) is provided with a symmetrical second side wing (25).

5. The nasobiliary connector according to claim 1, characterized in that: The head end of the metal connecting pipe (24) is in a tapered structure that gradually contracts in a direction away from the head (21).

6. The nasobiliary connector according to claim 1, characterized in that: The inner core (2) is a single-channel tube having a single channel inside, and the single channel is connected to the lumen of the nasobiliary duct and the drainage tube of the drainage bag.

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