CN216877429U

CN216877429U - Cap for pre-filled catheter flusher

Info

Publication number: CN216877429U
Application number: CN202122856044.2U
Authority: CN
Inventors: 李慧慧
Original assignee: Jimin Health Management Co ltd
Current assignee: Jimin Health Management Co ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-07-05
Anticipated expiration: 2031-11-19

Abstract

A cap for a prefilled catheter flusher comprises an external thread pipe section, a grasping means and a solid plug. One end of the solid plug is connected with the bottom of the inner hole of the external thread pipe section, and the other end of the solid plug is inserted into the liquid outlet nozzle of the prefilled catheter flusher. The external thread pipe section is provided with a second counter bore. And a second solid plug which is tightly matched with the liquid outlet nozzle of the corresponding prefilled catheter flusher is arranged in the second counter bore, and one end of the second solid plug is connected with one end of the inner hole of the second counter bore, which is far away from the external thread pipe section. The utility model has the characteristics of simple structure, high strength and material saving, and the scheme with the second counter bore can also be used for emergency flushing of the pre-filled catheter flusher and corresponding use in a short-time storage, transportation and use state.

Description

Cap for pre-filled catheter flusher

Technical Field

The utility model relates to a medical instrument, in particular to a cap for a prefilled catheter flusher.

Background

In order to prevent incompatibility and liquid medicine residue in the catheter from stimulating local blood vessels when different medicines are injected through the same catheter, the catheter needs to be flushed. The conventional method for flushing the catheter is realized by opening a whole pack of saline, then drawing a part through a syringe, and then injecting the saline into the catheter, and such a flushing method has a number of disadvantages, particularly, a problem that the saline is wasted greatly to increase the economic burden of a patient occurs. In order to reduce the waste of physiological saline and reduce the economic burden of patients, pre-filled catheter flushers have been designed, for example, chinese patent application No. 201811584427.5, No. CN 109647808B, entitled "pre-filled catheter flusher and method for assembling and outputting pre-filled catheter flusher" relates to a pre-filled catheter flusher, and the pre-filled catheter flusher relates to the problem that a cap for closing the liquid outlet is arranged on the liquid outlet. In the first embodiment, the cap comprises a threaded pipe section 61 and a hand grip section 62 which are arranged in sequence. The threaded pipe section 61 is sleeved on the liquid outlet nozzle. The external thread pipe section is connected in the internal thread sleeve in a threaded manner to seal the liquid outlet nozzle. The cap has simple integral structure and insufficient strength and is only suitable for one catheter flusher. As a modification of the first embodiment, in the second embodiment, a sealing film 63 is further provided in the cap. The cap is sealed and abutted on the port of the liquid outlet nozzle through a sealing film to seal the liquid outlet nozzle. The grasping means is also of tubular construction. The inner space of the gripping means forms an air hole 64 in the outer surface of the cap communicating with the surface of the side of the sealing membrane remote from the spout, so that the membrane is exposed in opening. The sealing membrane is sunken towards the inside of the liquid outlet nozzle under the action of pressure difference outside the physiological saline storage cavity to seal the port of the liquid outlet nozzle. The core rod and the outer sleeve are fixed together through a positioning structure 7. "the overall strength of the cap is not changed at all but is further reduced due to insufficient strength of the sealing film.

Disclosure of Invention

The utility model mainly aims to provide a cap for a prefilled catheter flusher, which has a simple structure, high strength and material saving.

The technical scheme adopted by the utility model is as follows: a cap for a prefilled catheter flusher comprises an external thread pipe section, a grasping means and a solid plug. One end of the solid plug is connected with the bottom of the inner hole of the external thread pipe section, and the other end of the solid plug is inserted into the liquid outlet nozzle of the prefilled catheter flusher.

The utility model is an integrated part with certain elasticity. The section between the end face of the other end of the solid plug and the side face of the solid plug is in chamfer or arc transition, so that the other end of the solid plug can be smoothly inserted into the liquid outlet nozzle of the prefilled catheter flusher, and the liquid outlet of the liquid outlet nozzle of the prefilled catheter flusher is sealed by utilizing the elastic action, so that the condition that the physiological saline stored in the prefilled catheter flusher is not reduced in the storage and transportation processes can be avoided. The utility model has simple structure, high strength, material saving, convenient and reliable use.

Preferably, the internal bore of the externally threaded pipe section is a frustoconical bore having a bore bottom diameter smaller than the bore opening diameter. Preferably, the solid plug is formed by connecting an outer section of the solid plug and an inner section of the solid plug. The inner section of the solid plug is connected with the inner hole bottom of the external thread pipe section. The outer section of the solid plug is a circular truncated cone, and the diameter of the inner hole bottom of the solid plug, which is far away from the external thread pipe section, is smaller than the diameter of the inner hole bottom of the solid plug, which is close to the external thread pipe section. Further preferably, the inner section of the solid plug is a cylinder or the inner section of the solid plug is a truncated cone with a taper smaller than that of the outer section of the solid plug. The preferable scheme is favorable for further improving the connection speed and the connection reliability of the liquid outlet nozzle and the solid plug of the prefilled catheter flusher.

Preferably, the part of the external thread pipe section is provided with a second counter bore. And a second solid plug which is tightly matched with the liquid outlet nozzle of the corresponding prefilled catheter flusher is arranged in the second counter bore, and one end of the second solid plug is connected with one end of the inner hole of the second counter bore, which is far away from the external thread pipe section. In the preferred scheme, the liquid outlet nozzle of the pre-filled catheter flusher is inserted into the second counter bore, so that the connection time and the separation time of the liquid outlet nozzle of the pre-filled catheter flusher and the device can be reduced, and the device is suitable for emergency flushing of the pre-filled catheter flusher and corresponding use in a short-time storage, transportation and use state. Preferably, the second solid plug is formed by connecting an outer section of the second solid plug far away from the external thread pipe section and an inner section of the second solid plug close to the external thread pipe section; the inner section of the second solid plug is a circular truncated cone, the diameter of the end part, far away from the external thread pipe section, of the inner section of the second solid plug is smaller than that of the end part, connected with the bottom of the inner hole of the external thread pipe section, of the end part, and the length of the outer section of the second solid plug is larger than or equal to 1.5 times of the length of the inner section of the second solid plug. Preferably, the outer section of the second solid plug is a truncated cone, and the taper of the outer section of the second solid plug is smaller than that of the inner section of the second solid plug. Preferably, the second counter bore is formed by connecting a second counter bore outer hole far away from the external thread pipe section and a second counter bore inner hole, one end of the second counter bore inner hole is connected with the bottom of the inner hole of the external thread pipe section, and the horizontal section of the second counter bore inner hole is formed by two circles; and the second counter bore outer hole is connected with one end of the second counter bore inner hole, which is far away from the external thread pipe section. Due to the further structural arrangement related to the second counter bore, the application rapidness and the reliability of the second counter bore can be greatly improved.

In conclusion, the utility model has the characteristics of simple structure, high strength and material saving, and the scheme provided with the second counter bore can also be used for emergency flushing of the pre-filled catheter flusher and corresponding use in a short-time storage, transportation and use state.

Drawings

FIG. 1: the utility model has a structure schematic diagram;

FIG. 2: a schematic cross-sectional view of the present invention;

in the figure: the external thread pipe section 1, the grip section 2, the solid plug 3, the solid plug outer section 3.1, the solid plug inner section 3.2, the second counter bore 4, the second counter bore outer hole 4.1, the second counter bore inner hole 4.2, the second solid plug 5, the second solid plug outer section 5.1 and the second solid plug inner section 5.2.

Detailed Description

The technical scheme of the utility model is further specifically described by the following embodiments and the accompanying drawings.

As shown in fig. 1-2, the utility model comprises an external thread pipe section 1, a hand grip section 2 and a solid plug 3. One end of the solid plug 3 is connected with the bottom of the inner hole of the external thread pipe section 1, and the other end of the solid plug 3 is inserted into the liquid outlet nozzle of the prefilled catheter flusher. The inner hole of the external thread pipe section 1 is a circular truncated cone hole, the diameter of the bottom of the hole is smaller than that of the hole opening, and the solid plug 3 is formed by connecting an outer section 3.1 of the solid plug and an inner section 3.2 of the solid plug; the inner section 3.2 of the solid plug is connected with the hole bottom of the inner hole of the external thread pipe section 1; the outer section 3.1 of the solid plug is a circular truncated cone, and the diameter of the inner hole bottom far away from the external thread pipe section 1 is smaller than that of the inner hole bottom close to the external thread pipe section 1. The inner section 3.2 of the solid plug is a cylinder or a truncated cone with a taper smaller than that of the outer section 3.1 of the solid plug, and the inner section 3.2 of the solid plug is a cylinder in the embodiment.

Preferably, the position of the external thread pipe section 1 is provided with a second counter bore 4; and a second solid plug 5 which is tightly matched with the liquid outlet nozzle of the corresponding prefilled catheter flusher is arranged in the second counter bore 4, and one end of the second solid plug 5 is arranged. The second solid plug 5 is formed by connecting a second solid plug outer section 5.1 far away from the external thread pipe section 1 and a second solid plug inner section 5.2 close to the external thread pipe section 1; the inner section 5.2 of the second solid plug is a truncated cone, and the diameter of the end part of the inner section 5.2 of the second solid plug, which is far away from the external thread pipe section 1, is smaller than that of the end part connected with the bottom of the inner hole of the external thread pipe section 1. Wherein the length of the outer section 5.1 of the second solid plug is more than or equal to 1.5 times of the length of the inner section 5.2 of the second solid plug. The outer section 5.1 of the second solid plug is a cylinder or a truncated cone, when the outer section 5.1 of the second solid plug is the truncated cone, the taper of the outer section 5.1 of the second solid plug is smaller than that of the inner section 5.2 of the second solid plug, and the outer section 5.1 of the second solid plug is a cylinder in this embodiment. Preferably, the second counter bore 4 is formed by connecting a second counter bore outer hole 4.1 far away from the external thread pipe section 1 and a second counter bore inner hole 4.2, one end of which is connected with the bottom of the inner hole of the external thread pipe section 1 and the horizontal section of which is formed by two circles; the second counter bore outer hole 4.1 is connected with one end of the second counter bore inner hole 4.2 far away from the external thread pipe section 1.

The above embodiments are merely preferred embodiments of the present invention, and not intended to limit the structure and scope of the utility model. Indeed, many equivalent variations in the shapes, constructions and design objectives of the devices according to the present invention are possible. Therefore, all equivalent changes in the shapes, structures and design objectives of the present invention are intended to be covered by the present invention, and all such equivalent changes are intended to be protected by the present invention.

Claims

1. A cap for a prefilled catheter flusher comprises an external thread pipe section (1) and a hand grip section (2); the method is characterized in that: also comprises a solid plug (3); one end of the solid plug (3) is connected with the bottom of the inner hole of the external thread pipe section (1), and the other end of the solid plug (3) is inserted into the liquid outlet nozzle of the prefilled catheter flusher.

2. A cap for a pre-filled catheter flusher as set forth in claim 1, wherein: the inner hole of the external thread pipe section (1) is a circular table hole, and the diameter of the hole bottom is smaller than that of the hole opening.

3. A cap for a pre-filled catheter flusher as set forth in claim 1, wherein: the solid plug (3) is formed by connecting an outer section (3.1) of the solid plug and an inner section (3.2) of the solid plug; the inner section (3.2) of the solid plug is connected with the hole bottom of the inner hole of the external thread pipe section (1); the outer section (3.1) of the solid plug is a circular truncated cone, and the diameter of the inner hole bottom far away from the external thread pipe section (1) is smaller than that of the inner hole bottom close to the external thread pipe section (1).

4. A cap for a pre-filled catheter flusher as set forth in claim 3, wherein: the inner section (3.2) of the solid plug is a cylinder.

5. A cap for a pre-filled catheter flusher as set forth in claim 3, wherein: the inner section (3.2) of the solid plug is a circular truncated cone with the taper smaller than that of the outer section (3.1) of the solid plug.

6. A cap for a pre-filled catheter flusher according to any one of claims 1 to 5, characterized in that: a second counter bore (4) is arranged at the position of the external thread pipe section (1); and a second solid plug (5) which is tightly matched with the liquid outlet nozzle of the corresponding prefilled catheter flusher is arranged in the second counter bore (4), and one end of the second solid plug (5) is arranged.

7. A cap for a pre-filled catheter flusher as set forth in claim 6, wherein: the second solid plug (5) is formed by connecting a second solid plug outer section (5.1) far away from the external thread pipe section (1) and a second solid plug inner section (5.2) close to the external thread pipe section (1); the second solid plug inner section (5.2) is a circular truncated cone, and the diameter of the end part of one end, far away from the external thread pipe section (1), of the second solid plug inner section (5.2) is smaller than that of the end part connected with the bottom of the inner hole of the external thread pipe section (1).

8. A cap for a pre-filled catheter flusher as set forth in claim 7, wherein: wherein the length of the second solid plug outer section (5.1) is more than or equal to 1.5 times of the length of the second solid plug inner section (5.2).

9. A cap for a pre-filled catheter flusher as set forth in claim 6, wherein: the outer section (5.1) of the second solid plug is a truncated cone, and the taper of the outer section (5.1) of the second solid plug is smaller than that of the inner section (5.2) of the second solid plug.

10. A cap for a pre-filled catheter flusher as set forth in claim 6, wherein: the second counter bore (4) is formed by connecting a second counter bore outer hole (4.1) far away from the external thread pipe section (1) and a second counter bore inner hole (4.2) with one end connected with the inner hole bottom of the external thread pipe section (1) and a horizontal section formed by two circles; the second counter bore outer hole (4.1) is connected with one end, far away from the external thread pipe section (1), of the second counter bore inner hole (4.2).