CN210186122U - Drainage device - Google Patents

Abstract

The utility model relates to a drainage device. The drainage device comprises a three-way connector, a first connector, a second connector and a third connector which are communicated with each other, and a control valve for connecting the first connector, the second connector and the third connector; the three-way pipe comprises a first connecting pipe, a second connecting pipe and a third connecting pipe; wherein the first joint is connected with the first connecting pipe; one end of the first joint close to the control valve is an inlet end, and the other end of the first joint far away from the control valve is an outlet end; the outer diameter of the access end port is smaller than or equal to that of the access end port; the outer diameter of the outlet port is greater than or equal to 1/5 and less than or equal to 1/2 of the third fitting outer diameter. Through the arrangement, the caliber of the connection end of the first connector is smaller than that of the third connector, so that the first connector is matched with the first connecting pipe conveniently, and the application range of the three-way connector is expanded.

Description

Drainage device

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a drainage device.

Background

In clinical liver transplantation, especially in parental liver transplantation operation, various hospitals can connect the short connecting tube of the medical T-shaped tube into the biliary tract of a human body and lead the long connecting tube out of the body for draining bile or flushing the biliary tract.

In order to reduce the probability of postoperative biliary tract infection and reduce pain, and the internal diameter of the biliary tract of a child liver transplantation patient is small due to age, so that the diameter of the T tube used in the liver transplantation is very small. In the prior art, the three-way joint is usually used for connecting an intravenous infusion pipeline, is relatively thick and cannot be matched with a T pipe in a liver transplantation operation, so that the postoperative rehabilitation process of a patient is seriously influenced, and the difficulty of medical care is increased.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a drainage device for biliary tract drainage and washing after liver transplantation operation, drainage device includes:

the three-way connector comprises a first joint, a second joint and a third joint which are communicated with each other, and a control valve for connecting the first joint, the second joint and the third joint;

the three-way pipe comprises a first connecting pipe, a second connecting pipe and a third connecting pipe;

wherein the first joint is connected with the first connecting pipe; one end of the first joint close to the control valve is an inlet end, and the other end of the first joint far away from the control valve is an outlet end; the outer diameter of the access end port is smaller than or equal to that of the access end port; the outer diameter of the outlet port is greater than or equal to 1/5 and less than or equal to 1/2 of the third fitting outer diameter.

Optionally, the outer wall of the outlet end of the first joint is provided with a plurality of circles of protrusions for fixing the first connecting pipe and the first joint at intervals.

Optionally, the first connecting tube has an inner diameter greater than 1/2 of the outlet port outer diameter and less than the outlet port outer diameter.

Optionally, the first joint forms a frustum cone structure with a gradually decreasing caliber from the port of the access end to the port of the access end.

Optionally, the taper C of the truncated cone structure is greater than or equal to 0.01 and less than or equal to 0.5 to fit the first connecting pipe.

Optionally, the first joint forms a pipe body structure with an equal caliber from the port of the inlet end to the port of the outlet end so as to be matched with the first connecting pipe.

Optionally, the control valve comprises a valve body, a valve core arranged in the valve body and a rotating handle fixedly connected with the valve core; and a flow passage for communicating the first joint, the second joint and the third joint is formed in the valve body and the valve core.

Optionally, the outer wall of the end of the second joint far away from the control valve and the outer wall of the end of the third joint far away from the control valve are both provided with external threads for butt joint of adaptive connecting pipe threads.

Optionally, the inner diameter of the second joint is equal to the inner diameter of the third joint, and the outer diameter of the second joint is equal to the outer diameter of the third joint; the drainage device comprises a drainage tube with internal threads formed at two ends and a drainage bag in threaded connection with one end of the drainage tube; the other end of the drainage tube is in threaded connection with one end of the second joint far away from the control valve and/or one end of the third joint far away from the control valve.

Optionally, the drainage device further comprises a sealing plug sealing the second joint and/or the third joint.

The embodiment of the utility model provides a technical scheme can include following beneficial effect:

the embodiment of the utility model provides a drainage device for biliary tract drainage and washing after liver transplantation, 1/5 that its first joint connect the external diameter of output end port to be more than or equal to the third and connect the external diameter, and be less than or equal to 1/2 that the third connects the external diameter, so that the bore that first joint connects the output end is less than the bore that the third connects, so as to do benefit to and be used for biliary tract drainage and the first connecting pipe looks adaptation that washes, enlarged three way type connector's application scope.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic structural view of a drainage device according to an embodiment of the present invention;

FIG. 2 is a schematic view of the three-way connector of the drainage device of FIG. 1 in one state;

FIG. 3 is a schematic view of the three-way connector of the drainage device of FIG. 1 in another state;

FIG. 4 is an enlarged view of a portion of the third connector of the drainage device of FIG. 1 connected to a drain tube;

FIG. 5 is an enlarged view of a portion of the first connector of the drainage device of FIG. 1 connected to the first connector;

fig. 6 is a schematic diagram of an internal structure of a control valve of the drainage apparatus shown in fig. 1.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of the terms "a" or "an" and the like in the description and in the claims does not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

Fig. 1 is a schematic structural view of a drainage device according to an embodiment of the present invention. Fig. 2 is a schematic view of the three-way connector of the drainage device shown in fig. 1 in one state. Fig. 3 is a schematic view of the three-way connector of the drainage device shown in fig. 1 in another state. FIG. 4 is an enlarged view of a portion of the third connector of the drainage device shown in FIG. 1 connected to a drainage tube. Fig. 5 is an enlarged view of a portion of the first connector of the drainage device shown in fig. 1 connected to the first connection pipe. Fig. 6 is a schematic diagram of an internal structure of a control valve of the drainage apparatus shown in fig. 1.

Referring to fig. 1, the embodiment of the present invention provides a drainage device including: the three-way connector 1 comprises a first joint 11, a second joint 12 and a third joint 13 which are communicated with each other, and a control valve 2 which is connected with the first joint 11, the second joint 12 and the third joint 13; a tee pipe 6 including a first connection pipe 61, a second connection pipe 62, and a third connection pipe 63; wherein the first joint 11 is connected with the first connecting pipe 61; one end of the first joint 11 close to the control valve 2 is an inlet end 111, and one end of the first joint 11 far from the control valve 2 is an outlet end 112; the outer diameter 112d of the port of the access end 112 is smaller than or equal to the outer diameter 111d of the port of the access end 111; the outer diameter 112d of the port of the outlet end 112 is greater than or equal to 1/5 of the outer diameter 13d of the third joint 13 and less than or equal to 1/2 of the outer diameter 13d of the third joint 13.

The embodiment of the utility model provides a drainage device, the external diameter through the 112 ports that connect that will first joint 11 is greater than or equal to 1/5 of third joint 13 external diameter, and is less than or equal to 1/2 of third joint 13 external diameter to make first joint 11 connect the bore that the end 112 connects to be less than the bore that the third connects 13, in order to do benefit to and be used for biliary tract drainage and the first connecting pipe 61 looks adaptation that washes, enlarged three way type connector 1's application scope.

In liver transplantation, the three-way pipe for biliary drainage and irrigation is very thin, but the joints of the three-way connector in the prior art are thick and cannot be matched with the three-way pipe in liver transplantation. The first connector 11 for connecting the first connecting tube 61 of the present invention is made thin, so that the three-way connector 1 can be applied to liver transplantation.

The utility model discloses a three-way pipe 6 adopts big and transparent material preparation of elasticity. When the first connector 11 is inserted into the first connection pipe 61, in order to achieve stable insertion, the inner diameter of the first connection pipe 61 is set to be smaller than the outer diameter of the connection and extraction end 112, so that the outer wall of the connection and extraction end 112 is closely fitted to the inner wall of the first connection pipe 61. However, considering that the elasticity also has a limit value, the tee 6 loses its elasticity as soon as the limit value is exceeded. The inner diameter of the first connecting pipe 61 is thus set to 1/2 greater than the outer diameter of the outlet end, which ensures a stable connection within the elastic range of the tee 6. Of course, the inner diameter of the first connection pipe 61 may be 3/5 or 4/5 larger than the outer diameter of the connection end, as long as stable insertion can be achieved and the first connection pipe is not easy to fall off.

In an embodiment of the present invention, referring to fig. 2 and 5, the first connector 11 forms a pipe structure with equal caliber from the port of the incoming end 111 to the port of the outgoing end 112. Meanwhile, a plurality of circles of protrusions 1121 are spaced apart from each other on the outer wall of the connection end 112. When the first connector 11 is inserted into the first connecting tube 61, the outer wall of the connecting end 112 uniformly abuts against the inner wall of the first connecting tube 61, and further abuts against the inner wall of the first connecting tube 61 through the protrusion 1121, so that the stability of the connection between the first connector 11 and the first connecting tube 61 is enhanced. The probability that the three-way connector 1 and the three-way pipe 6 fall off due to loose connection in the biliary tract drainage and flushing process after liver transplantation can be reduced, and the risk of a patient in the postoperative treatment process can be further reduced. The number of the protrusions 1121 may be 5, 6, etc., but is not limited thereto. And the interval between each two protrusions 1121 is equal so that the frictional force of each portion of the connection end 112 contacting the first connection pipe 61 is equal.

In another embodiment of the present invention, referring to fig. 3, the first connector 11 forms a frustum cone structure with a gradually decreasing diameter from the port of the incoming end 111 to the port of the outgoing end 112. When the first connector 11 is inserted into the first connection tube 61, the truncated cone structure has a certain taper, so that the insertion of the connection end 112 into the first connection tube 61 is easier. The outer wall of the connection end 112 is provided with a plurality of circles of protrusions 1121 at intervals, and the protrusions 1121 further abut against the inner wall of the first connection pipe 61, so that the stability of connection between the first joint 11 and the first connection pipe 61 is enhanced, and the probability that the first joint 11 is extruded and ejected due to the elastic force of the first connection pipe 61 can be reduced. The taper of the truncated cone structure can be calculated by the following formula:

C＝(D-d)/L

in the formula, C is the taper of the truncated cone, D-D is the difference value of the diameters of the upper end surface and the lower end surface of the truncated cone, and L is the height of the upper end surface and the lower end surface. The taper of the cone frustum can be calculated only by determining the height of the upper end surface and the lower end surface of the cone frustum and the difference value of the diameters of the upper end surface and the lower end surface. For example: the three connectors of the three-way connector used in medical treatment at present are all about 30 mm long, so the length of the first connector 11 can be 30 mm. And at present, the largest three-way pipe 6 is 24 in model number, the inner diameter of the three-way pipe is 8 mm, the smallest three-way pipe 6 is 8 in model number, and the inner diameter of the three-way pipe is 2 mm, so that the inner diameter of the first connecting pipe 61 is 2-8 mm. The inner diameter of the first connecting tube 61 is set to 1/2 larger than the outer diameter of the outlet end 112, and the outer diameter of the outlet end 112 of the first adapter 11 can be approximately 2-16 mm for fitting with the first connecting tube 61, and the taper is set to 0.03-0.46, but considering that the length of the adapter of the three-way connector 1 is different, the taper of the truncated cone is set to 0.01-0.5, so that the first adapter 11 with different tapers can be fitted with the first connecting tube 61.

In other embodiments, the first connector 11 may also form a pipe structure with an equal diameter from the port of the incoming end 111 to the middle of the first connector 11, and form a frustum cone structure with a gradually decreasing diameter from the middle of the first connector 11 to the port of the outgoing end 112. Alternatively, the first connector 11 may form a truncated cone structure with a gradually decreasing caliber from the port of the incoming end 111 to the middle of the first connector 11, and form a pipe structure with an equal caliber from the middle of the first connector 11 to the port of the outgoing end 112, which is not limited to this.

Referring to fig. 1 and 6, the three-way connector 1 is further provided with a control valve 2 for controlling the flushing and drainage of the biliary tract. The valve body 22 of the control valve 2 and the first joint 11, the second joint 12 and the third joint 13 are of an integral structure. The rotary handle 21 controls the opening and closing of the flow passage 23 by connecting a valve body 23 provided inside the valve body 22. Specifically, the valve body 22 and the valve core 23 are provided with a flow passage 23 communicating the first joint 11, the second joint 12 and the third joint 13, and three flow directions of the flow passage 23 are respectively directed to the three joints. When the three long rotating edges of the rotating handle 21 point to the three joints respectively, the three joints of the three-way connector 1 are all in an open state. When the two long rotating edges of the rotating handle 21 point to any two of the three joints, the two joints to which the three-way connector 1 is pointed are in an open state, and the other joint is in a closed state. The number of the specific opening and closing joints can be determined according to actual requirements, and is not described in detail herein.

The embodiment of the utility model provides a second connects 12 and third and connects 13 for the internal diameter and the equal body structure of external diameter, and the second connects 12 and third and connects 13 the function the same, can use alternately. And external threads are formed on the outer walls of one end of the second joint 12, which is far away from the control valve 2, and one end of the third joint 13, which is far away from the control valve 2. Referring to fig. 1 and 4, when biliary drainage and irrigation are required, one end of the drainage tube 5 with internal threads at both ends thereof may be connected to the third connector 13 by screw threads, and the other end of the drainage tube 5 may be connected to a medicine bag by screw threads. Medicines such as physiological saline and the like are injected into the abdominal cavity of a patient through the drainage tube 5 and the three-way connector 1 through the three-way pipe 6 and are mixed with viscous liquid in the abdominal cavity. When the medicines such as normal saline and the like reach a certain dosage, the injection is stopped, the medicine bag is replaced by the drainage bag 4, then the liquid mixed in the abdominal cavity flows into the drainage bag 4 through the drainage tube 5 by the three-way connector 1, and the operation is repeated, so that the mixture in the abdominal cavity can be discharged out of the body. In the embodiment of the utility model, the third joint 13 is used for connecting the medicine bag during injection and the drainage bag 4 during drainage, so that the second joint 12 is always in a sealing state during the operation. Because the second connector 12 and the third connector 13 have the same function, the second connector 12 can be connected with a medicine bag during injection, the drainage bag 4 during drainage and the third connector 13 is always in a sealed state, and the same effect can be achieved.

In another embodiment of the present invention, the second connector 12 can be used to receive the drainage bag 4 through the drainage tube 5, and the third connector 13 can be used to receive the medicine bag through the drainage tube 5. When the injection is carried out, the first connector 11 and the third connector 13 are communicated through the control valve 2, and the second connector 12 is closed, so that the medicines such as the physiological saline in the medicine bag can be injected into the abdominal cavity of the patient. The first connector 11 and the second connector 12 are then connected by the control valve 2, and the third connector 13 is closed, so that the mixture in the abdominal cavity can flow into the drainage bag 4 through the drainage tube 5 via the second connector 12.

The utility model discloses a before drainage device did not use, the port that the second of three way type connector 1 connects 12 and the port that the third connects 13 should be sealed through sealing plug 3, and the port that the first joint 11 should adopt the model to connect 12 and the third and connect 13 little end cap or other dustproof plugs to seal to ensure the inside cleanness of three way type connector 1, avoid receiving the pollution before the use.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. The invention is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. The utility model provides a drainage device for biliary tract drainage and washing after liver transplantation, its characterized in that, drainage device includes:

the three-way connector (1) comprises a first joint (11), a second joint (12) and a third joint (13) which are communicated with each other, and a control valve (2) which is connected with the first joint (11), the second joint (12) and the third joint (13);

a three-way pipe (6) comprising a first connecting pipe (61), a second connecting pipe (62) and a third connecting pipe (63);

wherein the first joint (11) and the first connecting pipe (61) are connected; one end of the first joint (11) close to the control valve (2) is an inlet end (111), and one end of the first joint (11) far away from the control valve (2) is an outlet end (112); the outer diameter (112d) of the port of the access end (112) is smaller than or equal to the outer diameter (111d) of the port of the access end (111); the outer diameter (112d) of the outlet end (112) port is greater than or equal to 1/5 of the outer diameter (13d) of the third joint (13) and less than or equal to 1/2 of the outer diameter (13d) of the third joint (13).

2. A drainage device according to claim 1, characterised in that the outer wall of the outlet end (112) of the first connector (11) is provided at intervals with a plurality of turns of protrusions (1121) for fixing the first connection tube (61) and the first connector (11).

3. A drainage device according to claim 1, wherein the inner diameter (61d) of the first connection tube (61) is larger than 1/2 of the outer diameter (112d) of the port of the outlet end (112) and smaller than the outer diameter (112d) of the port of the outlet end (112).

4. A drainage device according to claim 3, characterised in that the first connector (11) forms a truncated cone structure with a gradually decreasing aperture from the port of the inlet end (111) to the port of the outlet end (112).

5. A drainage device according to claim 4, wherein the taper C of the truncated cone structure is greater than or equal to 0.01 and less than or equal to 0.5 to fit the first connection tube (61).

6. A drainage device according to claim 1, characterized in that said first connector (11) forms, from the port of said inlet end (111) to the port of said outlet end (112), a tubular structure of equal diameter, adapted to said first connection pipe (61).

7. The drainage device according to claim 1, characterized in that the control valve (2) comprises a valve body (22), a valve core (23) arranged inside the valve body (22) and a rotary handle (21) fixedly connected with the valve core (23); and a flow passage (24) for communicating the first joint (11), the second joint (12) and the third joint (13) is formed in the valve body (22) and the valve core (23).

8. The drainage device according to claim 1, characterized in that the outer wall of the second joint (12) at the end far away from the control valve (2) and the outer wall of the third joint (13) at the end far away from the control valve (2) are both provided with external threads for the thread butt joint of the adaptive connecting pipes.

9. A drainage device according to claim 1, characterized in that the inner diameter of the second connector (12) and the inner diameter of the third connector (13) are equal, and the outer diameter of the second connector (12) and the outer diameter of the third connector (13) are equal; the drainage device comprises a drainage tube (5) with internal threads formed at two ends and a drainage bag (4) in threaded connection with one end of the drainage tube (5); the other end of the drainage tube (5) is in threaded connection with one end of the second joint (12) far away from the control valve (2) and/or one end of the third joint (13) far away from the control valve (2).

10. A drainage device according to claim 9, characterized in that the drainage device further comprises a sealing plug (3) sealing the second (12) and/or the third (13) joint.

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