CN221084333U - Indwelling needle tube sealing connector - Google Patents

Abstract

The application discloses a catheter sealing interface of an indwelling needle, which comprises an interface body with a Y-shaped structure, wherein a first interface, a second interface and a third interface are formed on the interface body; the middle part of interface body is formed with the mounting groove of circular structure, and the interior ring face of mounting groove communicates respectively in first interface, second interface and third interface. The indwelling needle tube sealing interface also comprises a valve core with a cylindrical structure, the valve core is coaxially and rotatably arranged in the mounting groove, and the outer annular surface of the valve core is sealed with the inner annular surface of the mounting groove; the outer ring surface of the valve core is radially penetrated with a first channel, and the outer ring surface of the valve core is radially provided with a second channel and a third channel which are used for communicating the first channel. The indwelling needle tube sealing interface is convenient to use and good in tube flushing effect.

Description

Indwelling needle tube sealing connector

Technical Field

The application relates to the technical field of medical appliances, in particular to a catheter sealing interface of an indwelling needle.

Background

In medical work, the indwelling needle is a medical device of a commonly used intravenous infusion channel and is placed at all positions of a human vein, and the placement time is long; after the transfusion is completed each time, the remaining needle is only required to be sealed, the next transfusion can be performed at any time, the puncture times of veins are reduced every day, the working efficiency of medical staff is improved, and the fear and pain of patients during venipuncture can be relieved.

In the prior art, the indwelling needle generally comprises a tube sealing interface with a Y-shaped structure, three mutually communicated interfaces are formed on the tube sealing interface, namely a first interface for connecting a heparin cap, a second interface for connecting an antibacterial cap and a third interface for connecting an infusion pipeline, and the other end of the infusion pipeline is connected with a needle head.

In the clinical application process, the indwelling needle may have blood return and foreign matter residues (for example, white liquid medicine residues may occur after injection of the propofol injection through the first interface each time) during the indwelling blood vessel, so that normal saline is injected through the first interface to perform a flushing operation, so as to maintain the permeability of the indwelling needle, and thereby improve the treatment effect. However, since the first port and the second port are mutually communicated, the flushing pipe is not clean, and liquid medicine residue or blood still exists in the second port; even if the flushing operation is performed from the second interface, the residual liquid medicine or blood in the first interface is caused, and the workload of medical staff is increased when the flushing operation is performed for a plurality of times.

Therefore, how to improve the existing tube sealing interface to overcome the above-mentioned shortcomings is a problem to be solved by those skilled in the art.

Disclosure of utility model

The application aims to provide an indwelling needle tube sealing interface which is convenient to use and good in tube flushing effect.

In order to achieve the above purpose, the application adopts the following technical scheme: the indwelling needle tube sealing interface comprises an interface body with a Y-shaped structure, wherein a first interface, a second interface and a third interface are formed on the interface body; the middle part of interface body is formed with the mounting groove of circular structure, the interior ring face of mounting groove communicate respectively in first interface second interface and third interface. The indwelling needle tube sealing interface also comprises a valve core with a cylindrical structure, wherein the valve core is coaxially and rotatably arranged in the mounting groove, and the outer annular surface of the valve core is sealed with the inner annular surface of the mounting groove; the valve core outer ring surface is radially provided with a first channel in a penetrating mode, and the valve core outer ring surface is radially provided with a second channel and a third channel which are used for being communicated with the first channel. When the valve core is rotated until two ends of the first channel are respectively communicated with the first interface and the third interface, and the second channel is communicated with the second interface, the first interface and the second interface are simultaneously opened. When the valve core is rotated until one end of the first channel is communicated with the second interface, and the third channel is communicated with the third interface, the first interface is closed, and the second interface is opened. When the valve core is rotated until two ends of the first channel are respectively communicated with the first interface and the third interface, and the second channel and the third channel are not communicated with the second interface, the first interface is opened, and the second interface is closed.

Preferably, the indwelling needle tube sealing interface further comprises a pressure ring with an annular structure, the pressure ring is coaxially arranged at the open end of the mounting groove, and the pressure ring is used for limiting the valve core to generate axial displacement.

Preferably, a clamping block or a clamping groove is arranged on the outer ring surface of the pressing ring, and correspondingly, a clamping groove or a clamping block is arranged on the interface body, and the clamping block is clamped in the clamping groove.

Preferably, the outer end of the valve core is provided with a rotating part.

Preferably, the rotating portion is located inside the mounting groove.

Preferably, the compression ring is located inside the mounting groove.

Preferably, a first identifier for indicating the positions of the first interface, the second interface and the third interface is arranged on the interface body or the pressing ring; the outer end face of the valve core is provided with a second mark for indicating the positions of the first channel, the second channel and the third channel.

Compared with the prior art, the application has the beneficial effects that: (1) The valve core is coaxially and rotatably arranged in the mounting groove, the outer annular surface of the valve core and the inner annular surface of the mounting groove form a seal, and a first channel, a second channel and a third channel which are mutually communicated are arranged on the outer annular surface of the valve core; therefore, when the valve core is rotated, two ends of the first channel are respectively communicated with the first interface and the third interface, and the second channel is communicated with the second interface, the first interface and the second interface can be controlled to be simultaneously opened, so that infusion can be simultaneously carried out through the first interface and the second inlet respectively. When the valve core is continuously rotated, one end of the first channel is communicated with the second interface, and the third channel is communicated with the third interface, the first interface is closed, and the second interface is opened, so that transfusion or blood collection operation can be carried out through the second interface alone. When the valve core is continuously rotated, two ends of the first channel are respectively communicated with the first interface and the third interface, and the second channel and the third channel are staggered with the second interface, the first interface is opened, and the second interface is closed, so that infusion is carried out through the first interface alone. That is, by rotating the valve core, the first interface can be controlled to be opened independently, or the second interface can be controlled to be opened independently, or the first interface and the second interface can be controlled to be opened simultaneously, so that corresponding requirements can be met, and the valve is convenient to use.

(2) Since the first port or the second port can be opened independently, for example, when the liquid medicine is inputted through the first port, the second port can be controlled to be closed, so that the liquid medicine can be prevented from entering the second port, and no residue is generated in the second port. Similarly, when the flushing pipe is operated, physiological saline is only needed to be injected into the first interface, the interior of the first interface can be completely flushed, and therefore the flushing effect of the flushing pipe is improved.

Drawings

Fig. 1 is a perspective view of an indwelling needle tube sealing interface provided by the application.

Fig. 2 is an exploded view of the catheter lock port of the indwelling needle of fig. 1 provided by the present application.

Fig. 3 is an enlarged view of the valve core in fig. 2 provided by the present application.

Fig. 4 is a cross-sectional view of the valve cartridge of fig. 3 provided by the present application.

Fig. 5 is an enlarged view of the press ring of fig. 2 provided by the present application.

Fig. 6 is a cross-sectional view of fig. 1 provided by the present application.

Fig. 7 is an enlarged view of a portion of the fig. 6 section I provided by the present application.

Fig. 8 is a front view of the partial structure of fig. 1 provided by the present application.

Fig. 9 is a cross-sectional view of the structures of fig. 8 provided by the present application.

Fig. 10 is another state diagram of the structures of fig. 8 provided by the present application.

Fig. 11 is a cross-sectional view of the structures of fig. 10 provided by the present application.

Fig. 12 is a further state diagram of the structures of fig. 8 provided by the present application.

Fig. 13 is a cross-sectional view of the structures of fig. 12 provided by the present application.

In the figure: 1. an interface body; 11. a first interface; 12. a second interface; 13. a third interface; 14. a mounting groove; 15. a clamping groove; 2. a valve core; 21. a first channel; 22. a second channel; 23. a third channel; 24. a rotating part; 25. a second identifier; 3. a compression ring; 31. a clamping block; 32. a first identifier; 100. a heparin cap; 200. an antibacterial cap; 300. an infusion pipeline.

Detailed Description

The present application will be further described with reference to the following specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present application, it should be noted that, for the azimuth words such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present application that the device or element referred to must have a specific azimuth configuration and operation.

It should be noted that the terms "first," "second," and the like in the description and in the claims are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

The terms "comprises" and "comprising," along with any variations thereof, in the description and claims, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Referring to fig. 1 to 4, an embodiment of the present application provides an indwelling needle catheter sealing port, which includes a port body 1 having a Y-shaped structure, and a first port 11, a second port 12 and a third port 13 are formed on the port body 1; the middle part of the interface body 1 is provided with a mounting groove 14 with a circular structure, and the inner ring surface of the mounting groove 14 is respectively communicated with the first interface 11, the second interface 12 and the third interface 13. The indwelling needle tube sealing interface also comprises a valve core 2 with a cylindrical structure, the valve core 2 is coaxially and rotatably arranged in the mounting groove 14, and the outer annular surface of the valve core 2 is sealed with the inner annular surface of the mounting groove 14; the outer ring surface of the valve core 2 is radially provided with a first channel 21 in a penetrating way, and the outer ring surface of the valve core 2 is radially provided with a second channel 22 and a third channel 23 which are used for communicating the first channel 21. When the valve core 2 is rotated until both ends of the first passage 21 are respectively communicated with the first port 11 and the third port 13, and the second passage 22 is communicated with the second port 12, the first port 11 and the second port 12 are simultaneously opened. When the spool 2 is rotated until one end of the first passage 21 communicates with the second port 12 and the third passage 23 communicates with the third port 13, the first port 11 is closed and the second port 12 is opened. When the valve core 2 is rotated until both ends of the first passage 21 are respectively communicated with the first port 11 and the third port 13, and the second passage 22 and the third passage 23 are not communicated with the second port 12, the first port 11 is opened and the second port 12 is closed.

The working principle of the catheter sealing interface of the indwelling needle is as follows: as shown in fig. 1, the first port 11 is used for connecting with the heparin cap 100, the second port 12 is used for connecting with the bacteria-proof cap 200, the third port 13 is used for connecting with one end of the infusion tube 300, and the other end of the infusion tube 300 is connected with the needle. As shown in fig. 8 and 9, when the first port 11 and the second port 12 need to be opened simultaneously, the valve core 2 is rotated to make both ends of the first channel 21 communicate with the first port 11 and the third port 13 respectively, and to make the second channel 22 communicate with the second port 12, at this time, the third channel 23 contacts with the inner annular surface of the mounting groove 14, so that the first port 11 and the second port 12 can be opened simultaneously, so that infusion can be performed simultaneously through the first port 11 and the second port respectively. As shown in fig. 10 and 11, when the valve core 2 is continuously rotated to make one end of the first channel 21 communicate with the second port 12 and make the third channel 23 communicate with the third port 13, the other end of the first channel 21 and the third channel 23 are both in contact with the inner annular surface of the mounting groove 14, so that the first port 11 can be controlled to be closed, and the second port 12 is opened, so that transfusion or blood collection operation can be performed solely through the second port 12. As shown in fig. 12 and 13, when the valve core 2 is continuously rotated, the two ends of the first channel 21 are respectively communicated with the first port 11 and the third port 13, and the second channel 22 and the third channel 23 are staggered from the second port 12 (i.e., the second channel 22 and the third channel 23 are respectively contacted with the inner annular surface of the mounting groove 14), the first port 11 is opened, and the second port 12 is closed, so that infusion can be performed through the first port 11 alone. That is, by rotating the valve core 2, the first interface 11 can be controlled to be opened independently, the second interface 12 can be controlled to be opened independently, or the first interface 11 and the second interface 12 can be controlled to be opened simultaneously, so as to meet corresponding requirements, and the valve is convenient to use.

In addition, since the first port 11 or the second port 12 can be opened independently, for example, when the chemical liquid is inputted through the first port 11, the second port 12 can be controlled to be closed, so that the chemical liquid can be prevented from entering the second port 12, and no residue is generated in the second port 12. Similarly, when the flushing pipe is operated, the inside of the first interface 11 can be completely flushed by only injecting physiological saline into the first interface 11, so that the flushing effect of the flushing pipe is improved.

Referring to fig. 2 to 6, in some embodiments of the present application, in order to achieve rotatable mounting of the valve core 2, the indwelling needle tube sealing interface further includes a ring-shaped pressure ring 3, the pressure ring 3 is coaxially disposed at the open end of the mounting groove 14, and the pressure ring 3 is used to limit axial displacement of the valve core 2.

Referring to fig. 7, in some embodiments of the present application, in order to implement the installation and fixation of the pressure ring 3, the outer ring surface of the pressure ring 3 is provided with a clamping block 31, the interface body 1 is provided with a clamping groove 15, and the installation and fixation of the pressure ring 3 can be implemented by clamping the clamping block 31 in the clamping groove 15. Of course, the positions of the latch 31 and the latch slot 15 may be interchanged.

Referring to fig. 3, in some embodiments of the present application, in order to facilitate rotation of the spool 2, the outer end of the spool 2 (the outer end of the spool 2 refers to the end of the spool 2 facing the outside of the mounting groove 14) is provided with a rotating portion 24.

Referring to fig. 6, in some embodiments of the present application, the rotating portion 24 is located inside the mounting groove 14 in order to prevent the rotating portion 24 from being touched by mistake and to enhance the aesthetic appearance.

Referring to fig. 6 and 7, in some embodiments of the application, the pressure ring 3 is located inside the mounting groove 14 for aesthetic purposes.

Referring to fig. 3 and 5, in some embodiments of the present application, in order to accurately determine the specific positions of the first channel 21, the second channel 22, and the third channel 23 when the valve core 2 is rotated, so as to accurately perform the rotation adjustment operation, the pressure ring 3 is provided with a first identifier 32 for indicating the positions of the first interface 11, the second interface 12, and the third interface 13; a second mark 25 for indicating the positions of the first passage 21, the second passage 22, and the third passage 23 is provided on the outer end surface of the spool 2 (the outer end of the spool 2 means the end surface of the spool 2 facing the outside of the mounting groove 14). Wherein the first identifier 32 may also be located on the interface body 1.

It should be noted that the specific form of the first mark 32 and the second mark 25 is not limited in the present application, for example, the first mark 32 has a triangular groove structure, and the second mark 25 has an arrow-shaped structure.

The foregoing has outlined the basic principles, features, and advantages of the present application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present application, and various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of the application is defined by the appended claims and equivalents thereof.

Claims (7)

1. The indwelling needle tube sealing interface comprises an interface body with a Y-shaped structure, wherein a first interface, a second interface and a third interface are formed on the interface body; the connector is characterized in that a mounting groove with a circular structure is formed in the middle of the connector body, and the inner annular surface of the mounting groove is respectively communicated with the first connector, the second connector and the third connector;

The indwelling needle tube sealing interface also comprises a valve core with a cylindrical structure, wherein the valve core is coaxially and rotatably arranged in the mounting groove, and the outer annular surface of the valve core is sealed with the inner annular surface of the mounting groove; a first channel radially penetrates through the outer ring surface of the valve core, and a second channel and a third channel which are used for communicating the first channel are radially arranged on the outer ring surface of the valve core;

When the valve core is rotated until two ends of the first channel are respectively communicated with the first interface and the third interface, and the second channel is communicated with the second interface, the first interface and the second interface are simultaneously opened;

When the valve core is rotated until one end of the first channel is communicated with the second interface and the third channel is communicated with the third interface, the first interface is closed, and the second interface is opened;

When the valve core is rotated until two ends of the first channel are respectively communicated with the first interface and the third interface, and the second channel and the third channel are not communicated with the second interface, the first interface is opened, and the second interface is closed.

2. The catheter lock interface of claim 1, further comprising a ring-like structure of a compression ring coaxially disposed at the open end of the mounting groove, the compression ring configured to limit axial displacement of the valve core.

3. The indwelling needle tube sealing interface according to claim 2, wherein a clamping block or a clamping groove is arranged on the outer ring surface of the pressing ring, and correspondingly, a clamping groove or a clamping block is arranged on the interface body, and the clamping block is clamped in the clamping groove.

4. The catheter lock interface of claim 2, wherein the outer end of the valve core is provided with a rotating portion.

5. The indwelling needle catheter lock hub according to claim 4, wherein said rotating portion is located inside said mounting groove.

6. The indwelling needle catheter lock hub according to claim 2, wherein said pressure ring is located within said mounting groove.

7. The indwelling needle catheter lock interface according to any one of claims 1 to 6, wherein said interface body or pressure ring is provided with a first identifier for indicating the position of said first interface, said second interface and said third interface; the outer end face of the valve core is provided with a second mark for indicating the positions of the first channel, the second channel and the third channel.