Connector assembly in negative pressure drainage system

Abstract

According to the connector assembly in the negative pressure drainage system, the center connector and the drainage tube connector are optimized, so that the wound nursing efficiency and effectiveness can be improved; a connector assembly in a set of negative pressure drainage system comprises a central connector and a drainage tube connector, the central connector is provided with a connecting groove, the connecting groove is provided with an external thread, a silica gel film with a preset cross opening is arranged in the connecting groove, the drainage tube connector comprises a first connector, a second connector and a third connector, and the first connector is provided with an external thread. The first connector is connected to the connecting groove to be sealed and fixed, and the third connecting groove is inserted into the second connector to be fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of wound care, especially the optimization of the connection structure in a negative pressure drainage system, and specifically relates to a connector assembly in a set of negative pressure drainage systems. Background Art

[0002] In a negative pressure drainage system, a central connector is required. The central connector needs to be connected to a negative pressure source and several drainage tubes simultaneously. Moreover, part of the central connector is likely to be exposed and cannot be completely wrapped by the topmost membrane layer. Therefore, the sealing performance of the central connector is required to be relatively high. In addition to the sealing requirement, the connection also needs to be stable and not come off due to stress. The final requirement is that it should be easy to operate and assemble.

[0003] Secondly, in a negative pressure drainage system, if splicing between dressings is required, a drainage tube connector is also needed. The sealing and firmness requirements for the drainage tube connector are lower than those of the central connector because a membrane layer will be used to wrap it above after connection to create a negative pressure environment. However, the connection requirements for this part need to fully consider its versatility and operational convenience.

[0004] In summary, it is necessary to design and optimize according to the requirements for the connector assembly in the negative pressure drainage system to improve the clinical nursing efficiency and effectiveness. Summary of the Utility Model

[0005] The utility model provides a connector assembly in a set of negative pressure drainage systems, which optimizes the central connector and the drainage tube connector to improve the efficiency and effectiveness of wound care.

[0006] The utility model is realized through the following technical solutions:

[0007] A connector assembly in a set of negative pressure drainage systems includes a central connector and a drainage tube connector. The central connector has a connection groove with external threads, and a silica gel membrane with a preset cross-shaped opening is arranged in the connection groove. The drainage tube connector has a first connector, a second connector, and a third connector. The first connector is connected to the connection groove for sealing and fixing, and the third connector is inserted into the second connector for fixing.

[0008] Further, the interior of the central connector is a hollow structure, and the connection groove protrudes 2 - 3 cm from the surface of the central connector.

[0009] Further, the cross-sectional shape of the central connector is rectangular. Connection grooves are respectively arranged on the upper surface and four side surfaces of the central connector. The connection groove on the upper surface is connected to the negative pressure source, and the connection grooves on the side surfaces are respectively connected to the drainage tubes through the first connectors.

[0010] Furthermore, there is a circle of reinforcing ribs around the cross-shaped opening, and the reinforcing ribs are located on the silicone film.

[0011] Furthermore, there is an internal thread on the inner surface of the first connector, and an insertion head inside. The insertion head is a hollow frustum structure with a gradually decreasing diameter from inside to outside.

[0012] Furthermore, in the hollow frustum structure, the diameter of the lower surface of the frustum is the same as the inner diameter of the drainage tube, and the diameter of the upper surface is 1 / 2 - 3 / 4 of the inner diameter of the drainage tube.

[0013] Furthermore, the second connector is located at one end of the drainage tube. The second connector is a hollow structure formed by sequentially cross-connecting four first slots and four second slots. The cross-sectional shape of the first slot is arc-shaped, the cross-sectional shape of the second slot is rectangular, and the four first slots are evenly arranged along the same circle.

[0014] Furthermore, the third connector is located at one end of the drainage tube. The third connector is recessed inward to form a first plug and a second plug. The shape formed by the first plug and the second plug is a similar figure to the shape formed by the first slot and the second slot. The outer surfaces of the first plug and the second plug are inserted into the first slot and the second slot for fixation, and the interior formed by surrounding the first slot and the second slot is a hollow structure.

[0015] Furthermore, the dressing is wrapped around the outer side of the inner drainage tube with the first connector and the second connector at both ends respectively. By connecting the first connector to the central connector, the inner dressing is fixed along the periphery of the central connector.

[0016] Furthermore, the dressing is wrapped around the outer side of the drainage tube with the second connector and the third connector at both ends respectively. By connecting the third connector to the second connector of the inner drainage tube, the dressing is fixed along the inner dressing around it.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model comprehensively considers the connector assembly in the negative pressure drainage system. By arranging connection grooves around the central connector and through the dual sealing effects of threads and silicone molds, both sealing and fixation are achieved. At the same time, the connection method is simple and the installation is convenient;

[0019] The central connection groove is set as an external thread, and the first connector on the drainage tube is an internal thread. The advantage is that the first connector can be flush with the dressing, which is more conducive to transportation and use;

[0020] The reinforcing rib enables the cross opening to be tightly and firmly installed on the outer surface of the insertion head of the first connector;

[0021] By setting the insertion head as a frustum-shaped structure with a gradually decreasing diameter, it is beneficial for insertion into the cross opening and does not affect the threaded connection;

[0022] The second connector and the third connector are provided with a rectangular fixing part, so as to have a certain fixing and strengthening effect after connection;

[0023] It can not only realize the connection between the dressing and the central connector, but also realize the multi-layer connection of the dressing. Description of the Drawings

[0024] Figure 1 Fig. 15 is a schematic structural view of the central connector in Embodiment 1 of the connector assembly in a set of negative pressure drainage systems of the present utility model;

[0025] Figure 2 Fig. 19 is a schematic structural view of the connection groove in the central connector in Embodiment 1 of the connector assembly in a set of negative pressure drainage systems of the present utility model;

[0026] Figure 3 Fig. 23 is a schematic structural view of the first connector in the drainage tube connector in Embodiment 2 of the connector assembly in a set of negative pressure drainage systems of the present utility model;

[0027] Figure 4 Fig. 27 is a schematic structural view of the second connector in the drainage tube connector in Embodiment 3 of the connector assembly in a set of negative pressure drainage systems of the present utility model;

[0028] Figure 5 Fig. 31 is a schematic structural view of the third connector in the drainage tube connector in Embodiment 4 of the connector assembly in a set of negative pressure drainage systems of the present utility model;

[0029] Figure 6 Fig. 35 is a schematic view of the connection relationship between the drainage tube and the dressing in Embodiment 5 of the connector assembly in a set of negative pressure drainage systems of the present utility model;

[0030] Figure 7 Fig. 39 is a schematic view of the first set of assembly methods in Embodiment 6 of the connector assembly in a set of negative pressure drainage systems of the present utility model;

[0031] Figure 8 Fig. 43 is a schematic view of the second assembly method in Embodiment 6 of the connector assembly in a set of negative pressure drainage systems of the present utility model.

[0032] Among them, 100-center connector, 110-shell, 120-connecting groove, 130-external thread, 140-reinforcement rib, 150-cross opening, 160-silicone membrane, 200-first connector, 210-internal thread, 220-insertion head, 300-second connector, 310-first slot, 320-second slot, 400-third connector, 410-first plug, 420-second plug, 10-dressing, 20-drainage tube. DETAILED DESCRIPTION

[0033] The following will be combined with the accompanying drawings in the embodiment of the present invention to clearly and completely describe the technical solutions in the embodiment of the present invention. Obviously, the embodiment described is only a representative embodiment of the present invention, not all embodiments. Based on the embodiment of the present invention, other embodiments obtained by ordinary technicians in this field without making any creative work are all within the scope of protection of the present invention. Example 1

[0034] This embodiment optimizes the central connector 100 in the negative pressure drainage system. During the optimization process, three basic requirements of the central connector are considered: sealing, stability, and ease of operation.

[0035] like Figure 1 and Figure 2 As shown, the center connector 100 is hollow inside as a whole, and the surface is a shell 110, and the interior is for drainage fluid to flow inside. The shape of the shell 110 is rectangular or circular. Choosing a rectangle will be more conducive to setting a connecting groove 120 on the side surface.

[0036] There are five connecting grooves 120 , which are respectively located on five adjacent surfaces of the rectangle. The connecting grooves 120 located on the upper surface are used to connect to the negative pressure source, and the connecting grooves 120 located on the four side surfaces are used to connect to the drainage tube 20 .

[0037] The connecting groove 120 is a circular curved surface that protrudes 2-3 cm from the surface of the shell 110. There is an external thread 130 on the outer surface of the connecting groove 120. The internal part connected to the shell 110 is a silicone membrane 160. The silicone membrane 160 has a cross opening 150 along the center, and there is a circle of reinforcing ribs 150 around the cross opening 150. When the connector on the drainage tube 20 is inserted into the connecting groove 120, when the nozzle of the drainage tube 20 passes through the cross opening 150, the silicone membrane 160 around the cross opening 150 is wrapped on the outer surface of the nozzle of the drainage tube 20. At this time, the reinforcing ribs 140 play a role of strengthening and fixing, so that the silicone membrane 160 remains on the outer surface of the nozzle of the drainage tube 20 for a longer time, and the cross opening 150 plays a role of sealing.

[0038] Secondly, the pipe orifice of the drainage tube 20 has internal threads, which are used in conjunction with the external threads on the connection groove 120, and can achieve a double-sealing effect. At the same time, in order to enhance the sealing effect, a silica gel pad can be added at the bottom of the internal threads on the inner side of the pipe orifice of the drainage tube 20. Embodiment 2

[0039] This embodiment is a schematic structural diagram of the first connector 200 of the drainage tube used in conjunction with Embodiment 1, and is used in conjunction with the connection groove 120.

[0040] As Figure 3 shown, the inner surface of the first connector 200 has internal threads 210. The first connector 200 is inserted onto the outer surface of the connection groove 120 and then fixed by threading through rotation. Inside the first connector 200, there is an insertion head 220. The insertion head 220 is a hollow frustum with a diameter gradually decreasing from the inside to the outside (from the direction away from the pipe orifice to the direction of the pipe orifice). The diameter of the lower surface of the frustum is the same as the inner diameter of the drainage tube, and the diameter of the upper surface of the frustum is 1 / 2 - 3 / 4 of the inner diameter of the drainage tube 20.

[0041] During use, the insertion head 220 is inserted through the cross-shaped opening 150, and the cross-shaped opening 150 wraps around the outer surface of the insertion head 220. The internal threads 210 are fixedly connected to the external threads 130 on the outer surface of the connection groove 120 through rotation. After connection, the drainage fluid in the drainage tube flows into the central connector 100 through the channel inside the insertion head 220. Embodiment 3

[0042] In addition to considering the central connector 100, if the drainage tube 20 can be connected in multiple segments, then the combined use of the dressing 10 can be achieved, enabling the dressing to be spliced into a specific shape or size, which is more in line with the needs of clinical irregular and different-sized wound surfaces.

[0043] During this process, the design of the connector of the drainage tube 20 needs to be considered. One end of the drainage tube 20 connected to the central connector 100 is the first connector 200, and the other end is the second connector 300. The function of the second connector 300 is to connect one end of another drainage tube 20 with a third connector 400.

[0044] As Figure 4 shown, the second connector 300 is a hollow structure formed by sequentially connecting a first slot 310 and a second slot 320. The numbers of the first slot 310 and the second slot 320 are four respectively. The shape of the first slot 310 is arc-shaped, and the four first slots 310 are distributed on the same circle. The cross-sectional shape of the second slot 320 is rectangular. The function of the second slot 320 is to prevent the sliding and displacement of the third connector 400 after insertion. At the same time, the structure of the second connection groove 300 has no distinction between front and back or left and right, and can be inserted and fixed from any direction. Example 4

[0045] This example is the third connector 400 used in conjunction with the second connector 300 in Example 3. As Figure 5 shown, the third connector 400 has a first plug 410 and a second plug 420 formed by inward depression. The shapes formed by the first plug 410 and the second plug 420 are similar to the shapes formed by the first slot 310 and the second slot 320. The interiors of the first plug 410 and the second plug 420 are hollow structures, and are fixed by correspondingly inserting partial outer surfaces of the first plug 410 and the second plug 420 onto the inner surfaces of the first slot 310 and the second slot 320. Example 5

[0046] As Figure 6 shown, a schematic diagram of the arrangement of the drainage tube connector is presented. The dressing 10 completely wraps around the outer surface of the drainage tube 20. The two ends of the drainage tube 20 are respectively the first connector 200 and the second connector 300. Of course, it can also be a drainage tube 20 having a second connector 300 and a third connector 400; among them, the first connector 200, the second connector 300, and the third connector 400 are flush with the surface of the dressing 10. Example 6

[0047] As Figure 7 and Figure 8 shown, two different methods for splicing and forming a negative pressure drainage system are presented. Among them, the central connector 100, the first connector 200, the second connector 300, and the third connector 400 in the above examples are used.

[0048] Figure 7 The first splicing and forming method is shown. Four drainage tubes 20 and the dressing 10 are inserted into the central connector 100 together with the first connector 200 and fixed around the central connector 100. The connection groove 120 on the upper surface of the central connector 100 is connected to a negative pressure source. In this case, the dressing 10 is rectangular in shape, and the central connector 100 is rectangular in shape.

[0049] Figure 8 The second splicing and forming method is shown. Four drainage tubes 20 and the dressing 10 are inserted into the central connector 100 together with the first connector 200 and fixed around the central connector 100 to form a ring surrounding the periphery of the central connector 100; another four drainage tubes 20 and four dressings 10 are inserted into the second connector 300 together with the third connector 400 to form a ring surrounding the outer side of the inner ring dressing. The connection groove 120 on the upper surface of the central connector 100 is connected to a negative pressure source. Among them, the dressing 10 is fan-shaped, the drainage tubes are located in the middle of the fan shape, and the central connector is circular in shape.

[0050] The above is only the preferred embodiment of the present utility model, and is not intended to limit the present utility model. The patent protection scope of the present utility model is subject to the claims. Any equivalent structural changes made by using the content of the specification and drawings of the present utility model shall, by the same token, be included in the protection scope of the present utility model.

Claims

1. A connector assembly in a negative pressure drainage system, characterized in that It includes a central connector and a drainage tube connector. The central connector has a connection groove with external threads. Inside the connection groove, there is a silica gel membrane with a preset cross-shaped opening. The drainage tube connector has a first connector, a second connector, and a third connector. The first connector is connected to the connection groove and sealed and fixed. The third connector is inserted into the second connector and fixed.

2. The connector assembly in a negative pressure drainage system according to claim 1, characterized in that, The inside of the central connector is a hollow structure, and the connection groove protrudes 2 - 3 cm from the surface of the central connector.

3. The connector assembly in a negative pressure drainage system according to claim 1, characterized in that, The cross-sectional shape of the central connector is rectangular. There are connection grooves on the upper surface and four side surfaces of the central connector. The connection groove on the upper surface is connected to a negative pressure source, and the connection grooves on the side surfaces are respectively connected to drainage tubes through the first connectors.

4. The connector assembly in a negative pressure drainage system according to claim 1, characterized in that, There is a circle of reinforcing ribs around the cross-shaped opening, and the reinforcing ribs are located on the silica gel membrane.

5. The connector assembly in a negative pressure drainage system according to claim 1, wherein, The inner surface of the first connector has internal threads, and inside there is an insertion head which is a hollow frustum structure with a gradually decreasing diameter from inside to outside.

6. The connector assembly in a set of negative pressure drainage systems according to claim 5, wherein, In the hollow frustum structure, the diameter of the lower surface of the frustum is the same as the inner diameter of the drainage tube, and the diameter of the upper surface is 1 / 2 - 3 / 4 of the inner diameter of the drainage tube.

7. The connector assembly in a negative pressure drainage system according to claim 1, characterized in that, The second connector is located at one end of the drainage tube. The second connector is an internally hollow structure formed by sequentially cross-connecting four first slots and four second slots. The cross-sectional shape of the first slot is arc-shaped, and the cross-sectional shape of the second slot is rectangular. The four first slots are evenly arranged along the same circle.

8. The connector assembly in a set of negative pressure drainage systems according to claim 7, characterized in that, The third connector is located at one end of the drainage tube. The third connector is recessed inward to form a first plug and a second plug. The shape formed by the first plug and the second plug is a similar figure to the shape formed by the first slot and the second slot. The outer surfaces of the first plug and the second plug are inserted into the first slot and the second slot for fixation. The inside surrounded by the first slot and the second slot is a hollow structure.

9. The connector assembly in a negative pressure drainage system according to claim 1, characterized in that, The dressing is wrapped around the outer side of the inner drainage tube with the first connector and the second connector at both ends. By connecting the first connector to the central connector, the inner dressing is fixed around the central connector.

10. The connector assembly in a set of negative pressure drainage systems according to claim 9, characterized in that, The dressing is wrapped around the outer side of the drainage tube with the second connector and the third connector at both ends. By connecting the third connector to the second connector of the inner drainage tube, the dressing is fixed around the inner dressing.

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