CN210813414U

CN210813414U - Double-cannula for medical drainage

Info

Publication number: CN210813414U
Application number: CN201921263145.5U
Authority: CN
Inventors: 王丽华; 王素琴
Original assignee: Wuxi Taihu Hospital
Current assignee: Wuxi Taihu Hospital
Priority date: 2019-08-06
Filing date: 2019-08-06
Publication date: 2020-06-23
Anticipated expiration: 2029-08-06

Abstract

The utility model discloses a double-sleeve for medical drainage, which comprises an inner pipe and an outer pipe, wherein the inner pipe is sleeved in the inner cavity of the outer pipe, and one end of the inner pipe passes through the side wall of the outer pipe and extends out of the outer pipe; the outer tube is provided with a through hole, the through hole is communicated with the inner cavity of the outer tube, and a plug is connected to the through hole. A double cannula for medical drainage satisfy the use of natural drainage and negative pressure drainage simultaneously, avoid artificially adding the side opening, prevent to infect.

Description

Double-cannula for medical drainage

Technical Field

The utility model relates to a medical appliance, in particular to a double-sleeve for medical drainage.

Background

Drainage tubes are a common medical device. Drainage tubes generally comprise an inner tube and an outer tube. The inner tube is used for inputting medicines such as physiological saline into the focus, and the outer tube is used for absorbing drainage fluid generated by the focus. The existing double-sleeve connector is closed: when natural drainage is needed, the connector needs to be sealed by transparent dressing to prevent leakage of liquid from the side hole; when the negative pressure suction is carried out, a side hole needs to be added manually through the syringe needle under the condition of no side hole. Because the needle head end is sharp and contacts drainage fluid of a patient, the needle stick injury is easy to occur, and the infection is caused, and the specific operation chart is shown in figure 1.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the defects existing in the prior art, the utility model provides a double-sleeve for medical drainage to satisfy the use of natural drainage and negative pressure drainage simultaneously, avoid artificially adding the side opening.

The technical scheme is as follows: in order to achieve the above purpose, the double-sleeve for medical drainage of the utility model comprises an inner tube and an outer tube, wherein the inner tube is sleeved in the inner cavity of the outer tube, and one end of the inner tube passes through the side wall of the outer tube and extends out of the outer tube; the outer tube is provided with a through hole, the through hole is communicated with the inner cavity of the outer tube, and a plug is connected to the through hole.

Furthermore, a part of the side wall of the outer pipe protrudes outwards to form a protrusion, the protrusion and the outer pipe are integrally formed, the through hole is formed in the protrusion, and the plug is connected with the end of the protrusion in a sleeved mode.

Further, the outer tube comprises a first connecting tube, a joint and a second connecting tube, and the first connecting tube and the second connecting tube are respectively connected to two ends of the joint; the inner pipe is sleeved in the inner cavity of the first connecting pipe and penetrates out of the first connecting pipe; the side wall of the joint is provided with a convex part, the through hole is arranged on the convex part and communicated with the inner cavity of the joint, and the plug is sleeved with the convex part and connected with the convex part.

Further, the joint comprises a cylindrical part and a conical part, the conical part is arranged on two sides of the cylindrical part, and the conical part and the cylindrical part are integrally formed; the convex portion is provided on the cylindrical portion.

Furthermore, a convex rib is arranged on the cylindrical part.

Furthermore, the end face of the conical part extends outwards to form a fixed pipe part, a chamfer is arranged at the free end of the fixed pipe part, and the first connecting pipe and the second connecting pipe are respectively connected with the fixed pipe part.

The utility model has the advantages as follows: a double cannula for medical drainage is provided, wherein a through hole is arranged on the side wall of an outer tube, and a plug is connected with the through hole; when natural drainage is needed, the plug is plugged on the through hole, when negative pressure drainage is needed, the plug is opened, the use of natural drainage and negative pressure drainage can be met, puncture wound caused by artificial opening is avoided, and infection is avoided.

Drawings

FIG. 1 is a schematic diagram of a conventional method for adding side holes to an outer tube according to the present invention;

fig. 2 is a schematic structural diagram of a first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a second embodiment of the present invention;

fig. 4 is a cross-sectional view of a joint according to the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Example one

The double cannula for medical drainage as shown in figure 2 comprises an inner tube 1 and an outer tube 2, wherein the inner tube 1 is sleeved in the inner cavity of the outer tube 2, and one end of the inner tube 1 passes through the side wall of the outer tube 2 and extends out of the outer tube 2. A part of the side wall of the outer tube 2 protrudes outward to form a protrusion 4, and the protrusion 4 is integrally formed with the outer tube 2. The bulge 4 is provided with a through hole which communicates the inner cavity of the outer tube with the outside. The bulge 4 is connected with a plug 3, and the plug 3 is a rubber sleeve and used for isolating the inner cavity of the outer tube from the outside. When natural drainage is needed, the plug is plugged on the through hole, and when negative pressure drainage is needed, the plug is opened.

Example two

A double cannula for medical drainage as described in figures 3 to 4 comprises an inner tube 1 and an outer tube 2. The outer pipe 2 comprises a first connecting pipe 5, a joint 6 and a second connecting pipe 7, wherein the first connecting pipe 5 and the second connecting pipe 7 are respectively connected to two ends of the joint 6; the inner tube 1 is sleeved in the inner cavity of the first connecting tube 5 and penetrates out of the first connecting tube 5. The joint 6 comprises a cylindrical part 9 and a conical part 10, wherein the conical part 10 is arranged on two sides of the cylindrical part 9, and the conical part 10 and the cylindrical part 9 are integrally formed. The joint with the shape is convenient to be plugged in and pulled out of the first connecting pipe and the second connecting pipe. The cylindrical portion 9 is provided with a convex portion 8, the convex portion 8 is provided with a through hole, and the upper end of the convex portion is sleeved with the plug 3. The plug 3 is a rubber sleeve. The cylindrical part 9 is provided with a convex edge, and when the first connecting pipe or the second connecting pipe needs to be plugged and pulled out, the friction force can be increased. The end face of the conical part 10 extends outwards to form a fixed pipe part 11, the free end of the fixed pipe part 11 is provided with a chamfer, and the first connecting pipe 5 and the second connecting pipe 7 are respectively connected with the fixed pipe part 11. The chamfered fixing tube part 11 facilitates insertion and removal of the first connecting tube 5 or the second connecting tube 7. When natural drainage is needed, the plug is plugged on the through hole, and when negative pressure drainage is needed, the plug is opened.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A double cannula for medical drainage, characterized by: the inner tube (1) is sleeved in an inner cavity of the outer tube (2), wherein one end of the inner tube (1) penetrates through the side wall of the outer tube (2) and extends out of the outer tube (2); the outer tube (2) is provided with a through hole which is communicated with the inner cavity of the outer tube (2), and a plug (3) is connected to the through hole.

2. A double cannula for medical drainage according to claim 1, wherein: one part of the side wall of the outer pipe (2) protrudes outwards to form a protrusion (4), the protrusion (4) and the outer pipe (2) are integrally formed, the through hole is formed in the protrusion (4), and the plug (3) is sleeved with the end of the protrusion (4) to be connected.

3. A double cannula for medical drainage according to claim 1, wherein: the outer pipe (2) comprises a first connecting pipe (5), a joint (6) and a second connecting pipe (7), and the first connecting pipe (5) and the second connecting pipe (7) are respectively connected to two ends of the joint (6); the inner pipe (1) is sleeved in the inner cavity of the first connecting pipe (5) and penetrates out of the first connecting pipe (5); be provided with convex part (8) on the lateral wall of joint (6), the through-hole sets up on convex part (8) to the inner chamber that connects (6) communicates, embolism (3) are established with the convex part cover and are connected.

4. A double cannula for medical drainage according to claim 3, wherein: the joint (6) comprises a cylindrical part (9) and a conical part (10), the conical part (10) is respectively arranged at two sides of the cylindrical part (9), and the conical part (10) and the cylindrical part (9) are integrally formed; the convex portion (8) is provided on the cylindrical portion (9).

5. The double cannula for medical drainage according to claim 4, wherein: the cylindrical part (9) is provided with a convex rib.

6. The double cannula for medical drainage according to claim 4, wherein: the end face of the conical part (10) extends outwards to form a fixed pipe part (11), a chamfer is arranged at the free end of the fixed pipe part (11), and the first connecting pipe (5) and the second connecting pipe (7) are connected with the fixed pipe part (11) respectively.