CN219185300U

CN219185300U - Anti-countercurrent closed type indwelling needle for dialysis

Info

Publication number: CN219185300U
Application number: CN202223013395.8U
Authority: CN
Inventors: 杨胜月; 王瑞祥; 宋腾腾
Original assignee: Jiakang Medical Equipment Qingdao Co ltd
Current assignee: Jiakang Medical Equipment Qingdao Co ltd
Priority date: 2022-11-11
Filing date: 2022-11-11
Publication date: 2023-06-16
Anticipated expiration: 2032-11-11

Abstract

The utility model belongs to the technical field of medical equipment and articles, and particularly discloses an anti-reflux closed type indwelling needle for dialysis. The indwelling needle comprises a catheter, a catheter seat, a separation plug, a needle tube, a needle seat, an extension tube, a connecting seat and an infusion connector. In addition, the retention needle also comprises a backflow prevention device; the catheter seat adopts a Y-shaped catheter seat, and the catheter is arranged at the front end of the Y-shaped catheter seat; the anti-reflux device is positioned in the Y-shaped catheter seat; one end of the extension tube is connected with the side opening position of the Y-shaped catheter seat, and the other end of the extension tube is connected with the connecting seat; the infusion connector is arranged on the connecting seat, and the infusion connector adopts a needleless Y-shaped infusion connector. According to the utility model, the anti-reflux device is arranged in the Y-shaped catheter seat, so that blood is prevented from leaking outwards during puncture connection, the needleless Y-shaped infusion connector is arranged on the connecting seat, and the Y-shaped infusion connector is automatically closed during interval dialysis, so that the double-closed structure is safer for patients, and the nursing workload is reduced.

Description

Anti-countercurrent closed type indwelling needle for dialysis

Technical Field

The utility model relates to the technical field of medical equipment, in particular to an anti-backflow closed type indwelling needle for dialysis.

Background

The indwelling needle has the advantages of rapid drug infusion, pain reduction caused by repeated puncture, workload reduction of medical staff and the like.

The core component of the indwelling needle is a soft catheter which can be placed in a blood vessel and a stainless steel puncture guiding needle tube. When in use, the catheter and the needle tube are punctured into the blood vessel together, and when the catheter completely enters blood, the needle tube is withdrawn.

The existing dialysis indwelling needle has the risk of blood leakage during puncturing and connection, influences patient safety, increases the burden on clinical nurses, and has an influence on patient treatment because the existing indwelling needle is easy to cause the problem of small flow during hemodialysis due to a catheter structure.

Disclosure of Invention

The utility model aims to provide an anti-reflux closed type dialysis remaining needle, which aims to solve the problem that the existing dialysis remaining needle has the risk of blood leakage during puncturing and connecting and ensure the safety of patients.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an anti-countercurrent closed type indwelling needle for dialysis comprises a catheter, a catheter seat, a separation plug, a needle tube, a needle seat, an extension tube, a connecting seat and an infusion connector; in addition, the retention needle also comprises a backflow prevention device;

wherein, the catheter seat adopts a Y-shaped catheter seat, and the catheter is arranged at the front end of the Y-shaped catheter seat;

the anti-reflux device is positioned in the Y-shaped catheter seat;

one end of the extension tube is connected to the side opening position of the Y-shaped catheter seat, and the other end of the extension tube is connected with the connecting seat;

the infusion connector is arranged on the connecting seat, and the infusion connector adopts a needleless Y-shaped infusion connector.

Preferably, the anti-reflux device is made of silica gel material;

wherein the back end of the anti-reflux device is arranged in an open way; the front end of the backflow preventing device is provided with an openable mouth part which consists of two symmetrical tongues which are mutually attached, and the openable mouth part is in an open state when the liquid medicine passes through from back to front.

Preferably, the needleless Y-shaped infusion connector comprises an infusion connector upper cover, a needleless Y-shaped silica gel valve and an infusion connector lower cover;

wherein, the upper cover of the transfusion joint is connected with the lower cover of the transfusion joint;

the needle-free Y-shaped silica gel valve is positioned between the upper cover of the infusion connector and the lower cover of the infusion connector.

Preferably, six through holes are formed in the front side wall of the catheter, and the six through holes are arranged in a pair of two opposite directions.

Preferably, the indwelling needle further comprises a protective sheath; wherein, the protective sheath cover is established in the outside of pipe and needle tubing.

Preferably, the indwelling needle further comprises a sliding clamping plate; wherein, the slip clamping plate is sleeved on the extension tube.

Preferably, the needle seat is positioned at the rear side of the Y-shaped catheter seat; the rear end of the needle tube is arranged on the needle seat, and the needle tube extends to the position of the catheter from back to front through the Y-shaped catheter seat, wherein the front end of the needle tube is exposed to the outer side of the catheter.

The utility model has the following advantages:

as described above, the utility model relates to an anti-reflux closed type dialysis remaining needle, which aims at the problem that the existing dialysis remaining needle has the risk of blood leakage during puncturing and connecting, adopts a Y-shaped catheter seat design, and is internally provided with an anti-reflux device, so that the blood is not leaked during puncturing and connecting. Meanwhile, the needleless Y-shaped infusion connector is arranged on the connecting seat, and the infusion connector is automatically closed during interval dialysis, so that the double-closed structure is safer for patients, and the nursing workload is reduced. In addition, the side wall of the catheter adopts a six-hole structure, so that compared with the existing straight dialysis indwelling needle, the flow rate during hemodialysis can be ensured.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

FIG. 1 is a schematic view showing the structure of an anti-reflux closed type dialysis needle according to an embodiment of the present utility model.

FIG. 2 is an exploded view of an anti-reflux closed dialysis needle according to an embodiment of the present utility model.

Fig. 3 is a schematic structural diagram of an anti-backflow device according to an embodiment of the present utility model.

Fig. 4 is an internal cross-sectional view of an anti-reflux device in an embodiment of the utility model.

Fig. 5 is a schematic structural view of a needleless Y-type infusion connector in accordance with an embodiment of the utility model.

FIG. 6 is an exploded view of a needleless Y-type infusion connector in accordance with an embodiment of the utility model.

Fig. 7 is a schematic structural diagram of a needleless Y-type silicone valve in accordance with an embodiment of the present utility model.

Fig. 8 is a front view of a needleless Y-type silicone valve in accordance with an embodiment of the present utility model.

Fig. 9 is a side view of a needleless Y-type silicone valve in an embodiment of the present utility model.

Fig. 10 is a cross-sectional view taken along A-A in fig. 9.

FIG. 11 is a schematic view of a catheter according to an embodiment of the present utility model.

Reference numerals illustrate:

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.

Example 1

The embodiment describes an anti-countercurrent closed type indwelling needle for dialysis, so as to solve the technical problems that the existing dialysis indwelling needle has the risk of blood leakage during puncturing and connection, and the flow is smaller when the indwelling needle is easy to cause hemodialysis due to a catheter structure.

As shown in fig. 1 and 2, the indwelling needle comprises a protective sleeve 1, a catheter 2, a funnel 3, a catheter seat, an anti-reflux device 5, a separation plug 6, a retainer 7, a needle tube 8, a needle seat 9, a sliding clamping plate 10, an extension tube 11, a connection seat 12 and an infusion connector 13.

Wherein, the catheter holder adopts Y type catheter holder 4, can guarantee that blood does not leak outward when puncture is connected.

The catheter 2 is mounted on the front end of the Y-catheter hub 4 as shown in fig. 1. The retainer ring 7, the isolation plug 6, the backflow preventing device 5 and the funnel 3 are all positioned inside the Y-shaped catheter seat 4 and are sequentially arranged from back to front.

The needle mount 9 is located on the rear side of the Y-catheter mount 4 as shown in fig. 1 and 2.

The rear end of the needle tube 8 is arranged on the needle seat 9, and the needle tube extends from back to front to the position of the catheter 2 through the Y-shaped catheter seat 4. The front end of the needle tube 8 is exposed to the outside of the catheter 2, and the protective sleeve 1 is sleeved on the outside of the catheter 2 and the needle tube 8.

One end of the extension tube 11 is connected to the side opening of the Y-shaped catheter holder 4, and the other end is connected to the connection holder 12. The infusion connector 13 is arranged on the connecting seat 12, and the infusion connector 13 adopts a needleless Y-shaped infusion connector.

The sliding clamping plate 10 is sleeved on the extension tube 13 as shown in fig. 1 and 2. The sliding clamping plate 10 can slide along the extension tube 13 and clamp the extension tube 13 at a proper position, thereby achieving the purpose of preventing the flow of the medical fluid.

As shown in fig. 3 and 4, the anti-backflow device 5 in this embodiment is made of silica gel.

Wherein, the rear end of the anti-reflux device 5 is an open setting, which is convenient for the liquid medicine to pass through.

The front end of the backflow prevention device 5 is provided with a first openable mouth 15 consisting of two symmetrical and mutually attached tongues 14. When no liquid medicine passes through, the two tongues 14 are tightly attached, and the first openable opening 15 is in a closed state.

When the liquid medicine passes through from back to front during transfusion, the first openable mouth 15 is in an open state under the action of the pressure of the liquid medicine, and a channel for the liquid medicine to flow from back to front is formed between the two symmetrical tongues 14.

The structure can ensure that the liquid medicine can only flow through from back to front and can not flow through from front to back, plays a role in preventing backflow and sealing, avoids blood backflow, greatly reduces the resistance when the needle is pulled out, ensures the safety of patients and lightens nursing work load.

As shown in fig. 5 and 6, the infusion connector 13 (i.e., a needleless Y-type infusion connector) in this embodiment includes an infusion connector upper cover 16, a needleless Y-type silicone valve 17, and an infusion connector lower cover 18.

Wherein the upper infusion connector cap 16 is connected to the lower infusion connector cap 18.

The needleless Y-shaped silica gel valve 17 is positioned between the infusion connector upper cover 16 and the infusion connector lower cover 18.

As shown in fig. 7 to 10, the needleless Y-shaped silicone valve 17 of the present embodiment is configured such that the second openable and closable opening 20 is provided on the needleless Y-shaped silicone valve 17 as can be seen from fig. 7 and 10.

When no liquid medicine passes through, the needleless Y-shaped silica gel valve 17 (namely the second openable and closable opening 20) is in a closed state. When the liquid medicine passes through, the needleless Y-shaped silica gel valve 17 is opened under the pressure of the liquid medicine, and the liquid medicine flows through.

The needleless Y-shaped infusion connector is additionally arranged on the connecting seat, so that the infusion connector can be automatically closed during interval dialysis.

In addition, through the double-sealing structure, the indwelling needle can be ensured to be safer for patients when in use.

In order to solve the problem that the flow rate is small when the conventional indwelling needle is likely to cause hemodialysis due to the catheter structure, six through holes, for example, through holes 19, are provided in the front side wall of the catheter 2 as shown in fig. 11.

The six through holes 19 are arranged in pairs, the front side wall of the catheter 2 adopts a six-hole structure, and compared with the existing straight dialysis indwelling needle, the flow rate during hemodialysis can be ensured. Of course, the number of through holes 19 in the present embodiment is not limited to the above six.

The utility model well solves the technical problems that the existing dialysis indwelling needle has the risk of blood leakage during puncturing and connecting and the indwelling needle has small flow rate during hemodialysis due to the catheter structure by the structural design of the indwelling needle.

The foregoing description is, of course, merely illustrative of preferred embodiments of the present utility model, and it should be understood that the present utility model is not limited to the above-described embodiments, but is intended to cover all modifications, equivalents and alternatives falling within the spirit and scope of the present utility model as defined by the appended claims.

Claims

1. An anti-countercurrent closed type indwelling needle for dialysis comprises a catheter, a catheter seat, a separation plug, a needle tube, a needle seat, an extension tube, a connecting seat and an infusion connector; the retaining needle is characterized by further comprising an anti-reflux device;

the anti-reflux device is positioned in the Y-shaped catheter seat;

2. The anti-reflux closed type dialysis needle as claimed in claim 1, wherein,

the anti-reflux device is made of silica gel;

the rear end of the anti-reflux device is arranged in an open way; the front end of the backflow preventing device is provided with an openable mouth part which consists of two symmetrical tongues which are mutually attached, and the openable mouth part is in an open state when liquid medicine flows through.

3. The anti-reflux closed type dialysis needle as claimed in claim 1, wherein,

the needleless Y-shaped infusion connector comprises an infusion connector upper cover, a needleless Y-shaped silica gel valve and an infusion connector lower cover;

4. The anti-reflux closed type dialysis needle as claimed in claim 1, wherein,

six through holes are formed in the front side wall of the guide pipe, and the six through holes are arranged in a pairwise opposite mode.

5. The anti-reflux closed type dialysis needle as claimed in claim 1, wherein,

the needle seat is positioned at the rear side of the Y-shaped catheter seat; the rear end of the needle tube is arranged on the needle seat, and the needle tube extends to the position of the catheter from back to front through the Y-shaped catheter seat, wherein the front end of the needle tube is exposed to the outer side of the catheter.

6. The anti-reflux closed type dialysis needle as claimed in claim 1, wherein,

the indwelling needle also comprises a protective sleeve; wherein, the protective sheath cover is established in the outside of pipe and needle tubing.

7. The anti-reflux closed type dialysis needle as claimed in claim 1, wherein,

the indwelling needle also comprises a sliding clamping plate; wherein, the sliding clamping plate is sleeved on the extension tube.