CN106420348B

CN106420348B - Infusion tube mouth

Info

Publication number: CN106420348B
Application number: CN201610855362.8A
Authority: CN
Inventors: 刘思川; 葛均友; 谭鸿波; 邹瑰丽; 王亮; 刘伟强; 张爱波; 邹松
Original assignee: Hunan Kelun Pharmaceutical Co Ltd
Current assignee: Hunan Kelun Pharmaceutical Co Ltd
Priority date: 2016-07-22
Filing date: 2016-09-28
Publication date: 2020-05-12
Anticipated expiration: 2036-09-28
Also published as: CN106420348A; CN206366033U

Abstract

The invention discloses an infusion tube orifice, which comprises a main tube, a movable sealing tube and a sealing outer cover, wherein the main tube is provided with a sealing hole; a liquid inlet cavity, a sealing cavity and a limiting cavity are sequentially arranged in the main pipe, and the diameters of the liquid inlet cavity and the limiting cavity are larger than that of the sealing cavity; the top of the movable sealing pipe is sealed, a sealing part is arranged on one side close to the top end, and the diameter of the sealing part is matched with that of the sealing cavity; the movable sealing pipe penetrates through the main pipe, a liquid inlet is formed in the side wall of the sealing part, and the movable sealing pipe enables the liquid inlet to be exposed or closed through movement; the sealing outer cover is bonded on the bottom end face of the main pipe to seal the lower port of the main pipe. The transfusion tube orifice can seal the transfusion channel when the transfusion resin needle is drawn out, thereby avoiding the defect of liquid medicine leakage from a transfusion container or pollution caused by butyl rubber plug falling objects caused by puncture and improving the quality of products.

Description

Infusion tube mouth

Technical Field

The invention relates to an infusion tube opening for an infusion bag.

Background

The flexible package transfusion product has been on the market for many years, and the structure of the flexible package transfusion product mainly comprises a bag body, a mouth pipe and a combined cover, wherein the bag body, the mouth pipe and the combined cover are made of non-PVC multi-layer co-extruded films. The types of port tubes and combination caps available on the market are various. The pipe orifice and the combined cover are relatively completely independent, the pipe orifice and the bag body are connected and then heated by a heating device and then welded and sealed, or the connecting part of the combined cover is directly inserted into the inlet pipe and pressed by external force to be sealed; also a combined cover is integrated with the mouth pipe, and the mouth pipe is directly welded on the bag body. The mouth tube and the combined cover are structurally provided with a butyl rubber plug or a partition valve plate for blocking and sealing. In the using process, the outermost protective layer (protective film and valve plate) of the combined cover is removed, and the infusion resin needle is inserted into the butyl rubber plug or the partition valve plate for infusion.

At present, the mouth tube and the sealing cover are mainly used in the following two modes;

the first method comprises the following steps: the mouth tube and the sealing cover are independent before being put into use to form a product, and are connected through a special process in the using process, so that the functions of sealing the bag body and forming a transfusion channel are realized; a butyl rubber plug is arranged in the independent sealing cover to realize the blocking and sealing functions, and the infusion resin needle penetrates through the butyl rubber plug to be driven through the infusion tube and the infusion bag for infusion.

And the second method comprises the following steps: the mouth tube and the sealing cover are integrated before being put into use to form a product, a partition valve plate is generally arranged in the integrated mouth tube in the form, and infusion resin punctures the partition valve plate and then gets through a channel between an infusion bag and an infusion tube for infusion.

In the first mode: the purpose of the built-in butyl rubber plug is mainly to utilize the elastic characteristic of the butyl rubber plug after puncture, the butyl rubber plug can rebound to block the puncture hole after the transfusion resin needle is drawn out to prevent leakage, but the rubber plug often has insufficient resilience in the actual use process, so that the puncture hole can not be completely sealed, and the liquid medicine leaks; in addition, the butyl rubber plug is inevitably damaged in the puncturing process of the sharp resin needle, so that a butyl rubber plug falling object is generated, and the quality of a product is influenced when the butyl rubber plug falling object enters a medicament.

In the second embodiment: after the valve plate is punctured by the infusion resin needle, the valve plate cannot return to block the needle hole due to the inelasticity of the valve plate. After the transfusion is finished, the residual liquid medicine in the transfusion bag flows out of the bag to cause pollution.

Disclosure of Invention

The invention aims to provide a transfusion tube orifice which has novel and unique structure and convenient use and can effectively seal the orifice; the specific technical scheme is as follows:

an infusion tube orifice comprises a main tube, a movable sealing tube and a sealing outer cover; a liquid inlet cavity, a sealing cavity and a limiting cavity are sequentially arranged in the main pipe, and the diameters of the liquid inlet cavity and the limiting cavity are larger than that of the sealing cavity; the top of the movable sealing pipe is sealed, a sealing part is arranged on one side close to the top end, and the diameter of the sealing part is matched with that of the sealing cavity; the movable sealing pipe penetrates through the main pipe, a liquid inlet is formed in the side wall of the sealing part, and the movable sealing pipe enables the liquid inlet to be exposed or closed through movement; the sealing outer cover is bonded on the bottom end face of the main pipe to seal the lower port of the main pipe.

Further, the top of the movable sealing pipe is arranged to be conical.

Further, the liquid inlet is arranged in the middle of the outer wall of the sealing part.

Further, the bottom of the movable sealing pipe is arranged to be in a horn mouth shape.

Furthermore, a limiting ring is arranged at the bottom end of the movable sealing pipe.

Further, the main pipe comprises a main pipe sleeve and an embedded sealing sleeve; the embedded sealing sleeve is sleeved inside the main pipe sleeve, and the sealing cavity and the limiting cavity are arranged in the embedded sealing sleeve.

Further, an annular convex edge is arranged in the middle of the inner cavity of the embedded sealing sleeve, a groove is formed in the waist of the movable sealing tube, and the width of the groove is larger than that of the sealing portion.

The transfusion tube orifice can seal the transfusion channel when the transfusion resin needle is drawn out, thereby avoiding the defect of liquid medicine leakage from a transfusion container or pollution caused by butyl rubber plug falling objects caused by puncture and improving the quality of products.

Drawings

FIG. 1 is a schematic view of the structure of an infusion tube orifice of the present invention;

FIG. 2 is a schematic view of a main tube structure;

FIG. 3 is a schematic view of a movable seal tube structure;

FIG. 4 is a schematic view of the structure of the transfusion nozzle of the present invention;

fig. 5 is an exploded view of the infusion nozzle of the present invention.

In the figure: 1. sealing the outer cover; 2. a sealing sleeve is embedded; 3. a movable sealing tube; 3-1, sealing part; 3-2, a limiting part; 3-3, a liquid inlet; 3-4, a limiting ring; 4. a main pipe; 4-1, a liquid inlet cavity; 4-2, sealing the cavity; 4-3, a limiting cavity; 5. A resin needle.

Detailed Description

The present invention will now be more fully described with reference to the following examples. This invention may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein.

For ease of description, spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in figure 1, the transfusion nozzle in the embodiment is applied to a transfusion bag and comprises a main pipe 4, a movable sealing pipe 3 and a sealing outer cover 1; the main pipe 4 is a round pipe with a boss at the bottom, a cylindrical liquid inlet cavity 4-1, a sealing cavity 4-2 and a limiting cavity 4-3 are sequentially arranged in the main pipe, and the diameters of the liquid inlet cavity 4-1 and the limiting cavity 4-3 are larger than that of the sealing cavity 4-2; the top of the movable sealing tube 3 is sealed, a sealing part 3-1 is arranged at one side close to the top end, and the diameter of the sealing part 3-1 is matched with that of the sealing cavity 4-2; the movable sealing pipe 3 penetrates through the main pipe 4, a liquid inlet 3-3 is formed in the middle of the side wall of the sealing part 3-1, and the movable sealing pipe 3 enables the liquid inlet 3-3 to be exposed or closed through movement; the sealing outer cover 1 is adhered to the bottom end surface of the main pipe to seal the lower port of the main pipe. The liquid inlet 3-3 can also be arranged at the upper part or the lower part of the outer wall of the sealing part 3-1.

The top of the movable sealing tube 3 is arranged to be conical; the strength of the top is ensured, and the phenomenon that the top is pierced by the resin needle 5 and cannot be sealed is avoided; the conical top can reduce turbulence and is beneficial to the flow of the liquid agent.

The bottom of the movable sealing pipe 3 is provided with a limiting part 3-2, the outer wall of the limiting part is provided with an annular V-shaped groove, and the lower port is a bell mouth; when the resin needle head 5 is inserted into the bell mouth, the resin needle head is contacted with the upper small mouth and then extrudes the contact part to form larger friction force; when the resin needle 5 is pulled out, the movable sealing tube 3 can be driven to move downwards by virtue of friction force to recover to a sealing position, so that the leakage of liquid medicine is avoided.

The bottom end of the limiting part 3-2 is provided with a convex edge for limiting the upward movement position of the movable sealing pipe 3 to form a limiting ring 3-4; the lower edge of the limiting cavity 4-3 is contacted with the upper end face of the limiting ring 3-4, so that the movable sealing pipe 3 is prevented from continuously moving upwards into the liquid inlet cavity 4-1, and the separation of the movable sealing pipe 3 is avoided, and the self-sealing pipe orifice is prevented from losing efficacy.

For convenience of processing, the main pipe 4 may be provided as two separate parts as shown in fig. 5: a main pipe sleeve and an embedded sealing sleeve 2; the sealing cavity 4-2 and the limiting cavity 4-3 are arranged in the embedded sealing sleeve 2.

An annular convex edge can be arranged in the middle of the inner cavity of the embedded sealing sleeve 2, the height of the convex edge along the axial direction of the inner cavity is 0.5 mm, and the diameter of the convex edge is 0.2 mm smaller than that of the inner cavity; the waist of the movable sealing tube 3 is provided with a groove, and the width of the groove is larger than that of the sealing part 3-1. The moving distance of the movable sealing tube 3 relative to the embedded sealing sleeve 2 is controlled by the width of the groove, so that the movable sealing tube 3 is prevented from being separated from the embedded sealing sleeve 2 from the lower port; meanwhile, the movable sealing pipe 3 can expose the liquid inlet 3-3 when moving to the upper end, and can seal the liquid inlet 3-3 when moving to the lower end.

When the sealing device works specifically, after the resin needle 5 pierces the sealing outer cover 1, the sealing device is inserted into the opening at the lower end of the movable sealing tube 3, the resin needle 5 touches the inner wall of the bell mouth due to the bell mouth shape that the inner diameter of the movable sealing tube 3 is reduced from large to small in the process of inserting the resin needle 5, the inner wall is extruded and slightly deformed, so that the resin needle cannot enter inwards, the thrust applied from outside to inside acts on the movable sealing tube 3 through the resin needle 5 to push the movable sealing tube 3 upwards, as shown in figure 4, a liquid inlet 3-3 is exposed, a liquid inlet cavity 4-1 is communicated with a movable sealing tube 3, liquid medicine enters a movable sealing tube 5 through the liquid inlet 3-3 and flows into the infusion tube through a resin needle 5 for infusion, and the stepped bulge on the inner wall of the embedded sealing sleeve 2 prevents the movable sealing tube 3 from continuously extending inwards after being exposed out of a medicine inlet hole 5. After the transfusion needle is drawn out, the movable sealing tube 3 moves downwards along with the needle, the medicine inlet 5 on the movable sealing tube 3 is pulled back into the embedded sealing sleeve 2 again, and the medicine inlet hole 5 is plugged by the embedded sealing sleeve 2 again, so that the sealing effect is realized.

The above examples are only for illustrating the present invention, and besides, there are many different embodiments, which can be conceived by those skilled in the art after understanding the idea of the present invention, and therefore, they are not listed here.

Claims

1. An infusion tube orifice is characterized by comprising a main tube, a movable sealing tube and a sealing outer cover; a liquid inlet cavity, a sealing cavity and a limiting cavity are sequentially arranged in the main pipe, and the diameters of the liquid inlet cavity and the limiting cavity are larger than that of the sealing cavity; the top of the movable sealing pipe is sealed, a sealing part is arranged on one side close to the top end, and the diameter of the sealing part is matched with that of the sealing cavity; the movable sealing pipe penetrates through the main pipe, a liquid inlet is formed in the side wall of the sealing part, and the movable sealing pipe enables the liquid inlet to be exposed or closed through movement; the sealing outer cover is bonded on the bottom end surface of the main pipe to seal the lower port of the main pipe; the top of the movable sealing pipe is arranged to be conical, the bottom of the movable sealing pipe is provided with a limiting part, the outer wall of the limiting part is provided with an annular V-shaped groove, and the lower port of the limiting part is a bell mouth; when the resin needle head is inserted into the bell mouth, the resin needle head is contacted with the upper small mouth and then extrudes the contact part to form larger friction force; when the resin needle head is pulled out, the movable sealing tube can be driven to move downwards by virtue of friction force to recover to a sealing position, so that the liquid medicine is prevented from leaking.

2. The infusion tube orifice according to claim 1, wherein the liquid inlet is provided in the middle of the outer wall of the sealing portion.

3. The infusion tube orifice of claim 1, wherein the bottom end of the movable sealing tube is provided with a ridge.

4. The infusion nozzle as claimed in claim 1, wherein said main tube comprises a main sleeve and an embedded sealing sleeve; the embedded sealing sleeve is sleeved inside the main pipe sleeve, and the sealing cavity and the limiting cavity are arranged in the embedded sealing sleeve.

5. The infusion tube orifice according to claim 4, wherein the middle part of the inner cavity of the embedded sealing sleeve is provided with an annular convex edge, the waist part of the movable sealing tube is provided with a groove, and the width of the groove is larger than that of the sealing part.