CN115778814A

CN115778814A - Integral inner film-coated joint and infusion bag

Info

Publication number: CN115778814A
Application number: CN202211435368.1A
Authority: CN
Inventors: 刘师宏; 刘超
Original assignee: Hunan China Sun Pharmaceutical Machinery Co Ltd
Current assignee: Hunan China Sun Pharmaceutical Machinery Co Ltd
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-03-14
Also published as: WO2024103427A1

Abstract

The invention discloses an integral type inner film-coating joint, which comprises a joint seat and a first joint pipe connected with the joint seat, wherein the first joint pipe comprises a first communication cavity used for communicating an inner cavity of an infusion bag and a puncture end part communicated with the first communication cavity, and the puncture end part comprises: the inner side wall of the puncture shell is circumferentially enclosed to form a puncture cavity, the puncture cavity is communicated with the first communication cavity, and the inner diameter of the puncture cavity is smaller than that of the first communication cavity, so that the lower end face of the puncture shell radially extends inwards to form a film-coated end face; a first upper sealing part integrally formed with an upper end of the puncture housing; the inner plug is bonded, compatible and connected with the inner side wall of the puncture shell and the lower end face of the first upper sealing part, and the lower end face of the inner plug is flush with the end face of the covering film; and the first lower sealing film is welded and attached to the lower end face of the inner plug and the end face of the coating film. In addition, the invention also discloses an infusion bag comprising the integral inner film-coated joint.

Description

Integral inner film-coated joint and infusion bag

Technical Field

The invention relates to the technical field of infusion joints, in particular to an integral type inner-coated joint. In addition, the invention also relates to an infusion bag comprising the integral inner film-coated joint.

Background

The infusion bag is a medical product widely applied to the medical industry and is mainly used for infusion treatment of patients, an infusion joint is arranged on the infusion bag to perform puncture guiding and sealing after puncture on an infusion needle, the infusion joint is usually composed of a joint seat and a joint pipe, the joint seat is welded at an opening of the infusion bag, then the joint pipe performs puncture guiding and sealing, the infusion bag is usually hung upside down to realize natural infusion of liquid medicine by utilizing gravity, therefore, an inner plug is arranged in the joint pipe to tightly hold the inner plug after the infusion needle punctures the inner plug to realize sealing after the infusion needle punctures and infuses, in addition, the patient often pulls out the infusion needle under the condition that liquid medicine still remains in the infusion bag in the infusion process, at the moment, a puncture hole on the inner plug is folded under the elastic action to realize sealing after the infusion needle is pulled out, leakage of the liquid medicine is prevented, namely, the fixed sealing of the inner plug in the joint seat is very critical, the sealing performance of the inner plug before puncture needs to be ensured, and the inner plug is reliably fixed in the puncture process.

The conventional adapter tube of the infusion connector is generally composed of an inner tube body, an inner plug and an outer cap body which are assembled together, and the inner tube body, the inner plug and the outer cap body are respectively and separately manufactured so as to be connected with each other by the inner tube body and the outer cap body to form a cavity for fixedly sealing the inner plug after the manufacture is completed, but the infusion connector with the structure has the following problems: 1. the production efficiency is low, the inner pipe body, the inner plug and the outer cover body are required to be manufactured independently, and the inner pipe body, the inner plug and the outer cover body are required to be assembled with each other after the manufacture is finished, so that the process steps are various, the production period is long, and the production efficiency is reduced; 2. the injection molding processing difficulty is high, the sealing of the inner plug mainly depends on the assembly of the inner tube body and the outer cover body, the requirement on the sealing performance of the inner plug is high based on the particularity of medical products, the requirement on the assembly precision between the inner tube body and the outer cover body is high, and the inner tube body and the outer cover body are generally formed by injection molding through an injection molding process, so the injection molding processing difficulty is increased due to the high-requirement assembly precision; 3. the production cost is high, and in the process of infusion treatment by adopting an infusion bag, the inner plug is required to be ensured not to be brought into the inner cavity of the infusion bag when the infusion needle is punctured, and the infusion needle cannot be taken out of the connector pipe when the infusion needle is pulled out, so that the fixation of the inner plug is very critical, the strength requirements on the inner pipe body and the outer cover body are high, the strength requirements on the material for forming the inner pipe body or the outer cover body during injection molding are high, the high-strength material which meets the medical requirements is limited in types and is relatively expensive, the material cost is increased, and the production cost is increased; 4. the puncture degree of difficulty is big, and the interior stopper of most material can not contact with the liquid medicine before the puncture, consequently, interior body still is provided with integrated into one piece's interior sealing to prevent interior stopper and liquid medicine contact, because interior sealing and interior body integrated into one piece, material between them is the same, and the material of moulding plastics of interior body often possesses certain intensity requirement for interior sealing also possesses certain intensity, in order to hinder the puncture of infusion needle when the puncture of infusion needle, has increased the puncture degree of difficulty.

Disclosure of Invention

The invention provides an integral type inner film-coated connector and an infusion bag, and aims to solve the technical problems that an infusion connector on an existing infusion bag is low in production efficiency, high in injection molding processing difficulty, high in production cost and high in puncture difficulty.

According to one aspect of the invention, an integral type inner film-coated connector is provided, which comprises a connector base and a first connector pipe connected with the connector base, wherein the first connector pipe comprises a first communication cavity used for communicating an inner cavity of an infusion bag and a puncture end part communicated with the first communication cavity, and the puncture end part comprises: the inner side wall of the puncture shell is circumferentially enclosed to form a puncture cavity, the puncture cavity is communicated with the first communication cavity, and the inner diameter of the puncture cavity is smaller than that of the first communication cavity, so that the lower end face of the puncture shell radially extends inwards to form a film-coated end face; a first upper sealing part which is integrally formed with the upper end part of the puncture housing and is used for sealing the upper end opening of the puncture cavity; the inner plug is bonded, compatible and connected with the inner side wall of the puncture shell and the lower end face of the first upper sealing part and is used for being filled and molded in the puncture cavity through an injection molding process, and the lower end face of the inner plug is flush with the end face of the film; and the first lower sealing film is welded and attached to the lower end face of the inner plug and the end face of the coating film and is used for sealing the lower end opening of the puncture cavity.

As a further improvement of the above technical solution:

furthermore, the first upper sealing part is an easily-broken cap or a pull ring, an easily-broken structure which is used for facilitating the breakage or the breaking of the first upper sealing part to expose the inner plug is arranged between the first upper sealing part and the puncture shell, and the radial size of the easily-broken structure is smaller than that of the puncture cavity.

Furthermore, the lower end face of the inner plug is provided with a puncture groove which is formed by upward sinking.

Further, the first bottom sealing film is a multilayer co-extruded film.

Furthermore, the first joint pipe comprises two puncture end parts which are arranged at intervals along the radial direction of the first joint pipe and are communicated with the same first communication cavity.

Furthermore, the joint comprises two first joint pipes which are arranged at intervals along the length direction of the joint seat and are arranged on the same joint seat.

Furthermore, the first joint pipe further comprises a first sealing end portion, the puncture end portion and the first sealing end portion are arranged at intervals along the radial direction of the first joint pipe and are communicated with the same first communication cavity, and the first sealing end portion comprises a first sealing shell, a first sealing cavity which is formed by enclosing the inner side wall of the first sealing shell along the circumferential direction and is used for being connected with the infusion needle in a sealing mode, and a second upper sealing portion which is formed by integrating the inner side wall of the first sealing shell and is used for sealing an upper end opening of the first sealing cavity.

Furthermore, the connector comprises a second connector pipe, the first connector pipe and the second connector pipe are arranged at intervals along the length direction of the connector base and are installed on the same connector base, the second connector pipe comprises a second communicating cavity used for communicating an inner cavity of an infusion bag and a second sealing end portion communicated with the second communicating cavity, and the second sealing end portion comprises a second sealing shell, a second sealing cavity formed by the inner side wall of the second sealing shell in a surrounding mode along the circumferential direction and used for being connected with an infusion needle in a sealing mode and a third upper sealing portion formed by the inner side wall of the second sealing shell in an integrated mode with the upper end portion of the second sealing shell and used for sealing an upper end opening of the second sealing cavity.

Further, the connector comprises a third connector pipe, the first connector pipe and the third connector pipe are arranged at intervals along the length direction of the connector base and are installed on the same connector base, and the third connector pipe comprises a third communicating cavity used for communicating the inner cavity of the infusion bag, a connecting platform used for connecting the outer cover body and a conical opening which is formed by enclosing the inner side wall of the connecting platform and communicated with the third communicating cavity and is used for communicating the inner cavity of the outer cover body.

According to another aspect of the invention, an infusion bag is also provided, which comprises the integral inner film joint.

The invention has the following beneficial effects:

the integral type inner film-coated joint of the invention is characterized in that the joint seat is obtained by injection molding through an injection molding process, the first joint pipe is molded together with the injection molding of the joint seat, or the first joint pipe is molded separately through injection molding, then the first joint pipe is welded and fixed on the joint seat through a welding process, the puncture end part is communicated with the first communicating cavity, and then the first communicating cavity is communicated with the inner cavity of an infusion bag, so that when an infusion needle punctures the puncture end part, the infusion of liquid medicine can be realized, the puncture end part forms a puncture cavity communicated with the first communicating cavity through the puncture shell, and then an inner plug is formed in the puncture cavity through filling through the injection molding process, so as to realize the sealing after the puncture of the infusion needle, before the puncture, the upper end opening of the puncture cavity is sealed through the first upper sealing part, so that the inner plug is prevented from being polluted by the external environment, and the first upper sealing part is molded together with the puncture shell, so that the structure stability is good, and the sealing is reliable, because the inner diameter of the puncture cavity is smaller than that of the first communicating cavity, the lower end surface of the puncture shell is provided with an inward convex film covering end surface, and the lower end surface of the inner plug is flush with the film covering end surface, namely, a first lower sealing film can be simultaneously welded on the lower end surface of the inner plug and the film covering end surface by adopting a welding process so as to realize reliable sealing of a lower end opening of the puncture cavity and prevent liquid medicine from contacting with the inner plug, the integral inner film covering joint of the scheme can be manufactured by adopting double-material injection molding firstly and then adopting a welding process, the process steps are few, the production period is short, the production efficiency is high, compared with the prior art, the sealing of the inner plug does not depend on assembly among a plurality of parts any more, the injection molding processing difficulty is greatly reduced, the fixation of the inner plug depends on the adhesive compatibility connection between the materials of the inner plug and the puncture shell, and the requirement on the material strength of the first joint pipe is low, the range of choice of material has been increased, is convenient for select the material that the price is lower relatively and produces to reduction in production cost replaces interior seal portion through first inferior sealing membrane simultaneously, greatly reduced the puncture degree of difficulty, the medical personnel of being convenient for use, the practicality is strong, is suitable for extensive popularization and application.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of an integral inner film-covered joint according to preferred embodiment 1 of the present invention;

FIG. 2 is a cross-sectional view of the integral inner film-covered joint of FIG. 1;

FIG. 3 is a schematic structural view of the integral inner film-covered joint according to the preferred embodiment 1 of the present invention;

FIG. 4 is a cross-sectional view of the integral inner membrane joint of FIG. 3;

FIG. 5 is a schematic structural view of an integral inner film-covered joint according to preferred embodiment 1 of the present invention;

FIG. 6 is a cross-sectional view of the integral inner film-covered joint shown in FIG. 5;

FIG. 7 is a schematic structural view of a monolithic inner membrane joint according to preferred embodiment 1 of the present invention;

FIG. 8 is a cross-sectional view of the integral inner film-covered joint of FIG. 7;

FIG. 9 is a schematic structural view of an integral inner film-covered joint according to preferred embodiment 1 of the present invention;

FIG. 10 is a cross-sectional view of the integral inner film-covered joint shown in FIG. 9;

FIG. 11 is a schematic structural view of a monolithic inner film-covered joint according to preferred embodiment 1 of the present invention;

FIG. 12 is a cross-sectional view of the integral inner film-covered joint of FIG. 11;

FIG. 13 is a schematic structural view of an integral inner film-covered joint according to preferred embodiment 1 of the present invention;

FIG. 14 is a cross-sectional view of the integral inner film joint of FIG. 13;

FIG. 15 is a schematic view showing the structure of the integral inner film-covered joint according to the preferred embodiment 1 of the present invention;

FIG. 16 is a cross-sectional view of the integral inner film-covered joint of FIG. 15;

FIG. 17 is a schematic view showing the structure of the integral inner film-covered joint according to the preferred embodiment 1 of the present invention;

FIG. 18 is a cross-sectional view of the integral inner film-covered joint of FIG. 17;

FIG. 19 is a schematic view showing the structure of the integral inner film-covered joint according to the preferred embodiment 1 of the present invention;

FIG. 20 is a cross-sectional view of the integral inner film-covered joint shown in FIG. 19;

FIG. 21 is a schematic structural view of a monolithic inner film-covered joint according to preferred embodiment 1 of the present invention;

FIG. 22 is a cross-sectional view of the integral inner film-covered joint of FIG. 21;

FIG. 23 is a schematic structural view of a monolithic inner film-covered joint according to preferred embodiment 1 of the present invention;

FIG. 24 is a cross-sectional view of the integral inner membrane joint of FIG. 23.

Illustration of the drawings:

100. a joint base; 200. a first joint pipe; 210. a first communicating chamber; 220. a piercing end; 221. puncturing the housing; 222. a puncture lumen; 223. a first upper seal portion; 224. an inner plug; 225. a first lower sealing film; 230. a first sealed end portion; 231. a first sealed housing; 232. a first sealed chamber; 233. a second upper seal portion; 300. a second joint pipe; 310. a second communicating chamber; 320. a second sealed end; 321. a second sealed housing; 322. a second sealed chamber; 323. a third upper sealing part; 400. a third joint pipe; 410. a third communicating chamber; 420. connecting the platform; 430. a conical mouth.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be practiced in many different ways, which are defined and covered by the following.

FIG. 1 is a schematic structural view of an integral inner film-covered joint according to preferred embodiment 1 of the present invention; FIG. 2 is a cross-sectional view of the integral inner film-covered joint of FIG. 1; FIG. 3 is a schematic structural view of an integral inner film-covered joint according to preferred embodiment 1 of the present invention; FIG. 4 is a cross-sectional view of the monolithic inner membrane joint of FIG. 3; FIG. 5 is a schematic structural view of an integral inner film-covered joint according to preferred embodiment 1 of the present invention; FIG. 6 is a cross-sectional view of the integral inner film-covered joint of FIG. 5; FIG. 7 is a schematic structural view of a monolithic inner membrane joint according to preferred embodiment 1 of the present invention; FIG. 8 is a cross-sectional view of the integral inner film-covered joint of FIG. 7; FIG. 9 is a schematic structural view of an integral inner film-covered joint according to preferred embodiment 1 of the present invention; FIG. 10 is a cross-sectional view of the integral inner film-covered joint shown in FIG. 9; FIG. 11 is a schematic structural view of a monolithic inner membrane joint according to preferred embodiment 1 of the present invention; FIG. 12 is a cross-sectional view of the integral inner film-covered joint of FIG. 11; FIG. 13 is a schematic view of the structure of the integral inner film-covered joint according to the preferred embodiment 1 of the present invention; FIG. 14 is a cross-sectional view of the integral inner film-covered joint of FIG. 13; FIG. 15 is a schematic structural view of an integral inner film-covered joint according to preferred embodiment 1 of the present invention; FIG. 16 is a cross-sectional view of the integral inner film-covered joint of FIG. 15; FIG. 17 is a schematic view showing the structure of the integral inner film-covered joint according to the preferred embodiment 1 of the present invention; FIG. 18 is a cross-sectional view of the integral inner film joint of FIG. 17; FIG. 19 is a schematic structural view of an integral inner film-covered joint according to preferred embodiment 1 of the present invention; FIG. 20 is a cross-sectional view of the integral inner film joint shown in FIG. 19; FIG. 21 is a schematic structural view of a monolithic inner film-covered joint according to preferred embodiment 1 of the present invention; FIG. 22 is a cross-sectional view of the integral inner film-covered joint of FIG. 21; FIG. 23 is a schematic structural view of a monolithic inner film-covered joint according to preferred embodiment 1 of the present invention; FIG. 24 is a cross-sectional view of the integral inner membrane joint of FIG. 23.

Example 1

As shown in fig. 1 to 4, the integral inner film-coated connector of the present embodiment includes a connector base 100 and a first connector tube 200 connected to the connector base 100, the first connector tube 200 includes a first communicating cavity 210 for communicating with an inner cavity of an infusion bag and a piercing end portion 220 communicating with the first communicating cavity 210, the piercing end portion 220 includes: the inner side wall of the puncture shell 221 circumferentially surrounds the puncture cavity 222, the puncture cavity 222 is communicated with the first communication cavity 210, and the inner diameter of the puncture cavity 222 is smaller than that of the first communication cavity 210, so that the lower end surface of the puncture shell 221 radially extends inwards to form a film-coated end surface; a first upper sealing part 223 integrally formed with the upper end part of the puncture housing 221 for sealing the upper end opening of the puncture chamber 222; an inner plug 224, which is bonded and compatibly connected with the inner side wall of the puncture housing 221 and the lower end surface of the first upper sealing part 223, and is used for being filled and molded in the puncture cavity 222 through an injection molding process, and the lower end surface of the inner plug 224 is flush with the end surface of the coating film; a first lower sealing film 225 is welded to the lower end face of the inner plug 224 and the end face of the covering film for sealing the lower end opening of the puncture chamber 222. Specifically, in the integral type inner film-coated connector of the present invention, the connector base 100 is obtained by injection molding through an injection molding process, the first connector tube 200 is formed together with the injection molding of the connector base 100, or the first connector tube 200 is formed by injection molding alone, the first connector tube 200 is welded and fixed on the connector base 100 through a welding process, the puncture end 220 is communicated with the first communication cavity 210 and is communicated with the inner cavity of the infusion bag through the first communication cavity 210, so that when the infusion needle punctures the puncture end 220, infusion of the liquid medicine can be achieved, the puncture end 220 forms the puncture cavity 222 communicated with the first communication cavity 210 through the puncture housing 221, the puncture cavity 222 is filled with the inner plug 224 through the injection molding process, so as to achieve sealing after puncturing by the infusion needle, before puncturing, the upper end opening of the puncture cavity 222 is sealed through the first upper sealing part 223, so as to prevent the inner plug 224 from being polluted by the external environment, and the first upper sealing part 223 is formed together with the injection molding of the puncture housing 221, the structure stability is good, the sealing is reliable, because the inner diameter of the puncture cavity 222 is smaller than that of the first communication cavity 210, the lower end face of the puncture shell 221 has an inward convex film-coated end face, and the lower end face of the inner plug 224 is flush with the film-coated end face, namely, the first lower sealing film 225 can be welded on the lower end face and the film-coated end face of the inner plug 224 by adopting a welding process, so as to realize reliable sealing of the lower end opening of the puncture cavity 222 and prevent the liquid medicine from contacting with the inner plug 224, the integral inner film-coated joint of the scheme can be manufactured by adopting a welding process mode after double-material injection molding, the process steps are few, the production period is short, the production efficiency is high, compared with the prior art, the sealing of the inner plug 224 does not depend on assembly among a plurality of components, the injection molding difficulty is greatly reduced, and the fixation of the inner plug 224 depends on the adhesive compatibility connection between the materials of the inner plug 224 and the puncture shell 221, the requirement on the strength of the material of the first joint pipe 200 is low, the selection range of the material is enlarged, the material with relatively low price can be conveniently selected for production and manufacturing, so that the production cost is reduced, meanwhile, the inner sealing part is replaced by the first lower sealing film 225, the puncture difficulty is greatly reduced, the medical personnel can conveniently use the joint pipe, the practicability is high, and the joint pipe is suitable for wide popularization and application. It should be understood that the two-shot molding process and the welding process are well known to those skilled in the art and will not be described in excessive detail herein. Alternatively, the inner diameter of first communicating lumen 210 is 10.5mm and the inner diameter of puncturing lumen 222 is 10mm.

In this embodiment, the first upper sealing portion 223 is a frangible cap or a pull ring, and a frangible structure for facilitating the first upper sealing portion 223 to break or break to expose the inner plug 224 is disposed between the first upper sealing portion 223 and the piercing housing 221, and the radial dimension of the frangible structure is smaller than that of the piercing cavity 222. Specifically, the cap or the pull ring is easily opened to expose the inner plug 224, and the cap or the pull ring is easily broken by the breakable structure, so that the medical staff can open the cap or the pull ring for use. It will be appreciated that the frangible structure has a radial dimension that is smaller than the radial dimension of the puncture chamber 222 (i.e., smaller than the radial dimension of the inner plug 224), and when the first upper seal 223 is broken or snapped off, it will break off from the inner plug 224 and exert a force on the inner plug 224, and the inner plug 224 is axially restrained by the retaining ring formed by the radially inward extension of the puncture housing 221, so that the inner plug 224 is stably retained in the puncture chamber 222. During lancing, the internal plug 224 is also held stably within the lancing chamber 222 by adhesive compatible forces between the internal plug 224 and the lancing housing 221.

In this embodiment, the lower end surface of the inner plug 224 is provided with a piercing recess formed by an upward recess. Specifically, the thickness of the inner plug 224 needed to be punctured by the infusion needle is reduced through the puncturing groove, so that the puncturing difficulty is reduced, and the cutting resistance is reduced.

In this embodiment, the first lower sealing film 225 is a multilayer coextruded film. Specifically, the first lower sealing film 225 is a multilayer coextruded film. In this embodiment, the first lower sealing film 225 is a multilayer coextruded film. Specifically, the multilayer co-extrusion film has the characteristics of strong barrier property, oxygen resistance, water resistance, moisture resistance, strong mechanical property, high explosion resistance, puncture resistance, tear resistance, high temperature resistance, low temperature resistance, oil resistance, good fragrance retention, no toxicity, no odor, good heat sealing property, softness, high transparency, high composite peel strength, strong environment resistance and the like, puncture burst is not easy to occur after the multilayer co-extrusion film is attached, the thickness of the film is uniform, the puncture needle blocking phenomenon is not easy to occur, insoluble particles on the surface of an infusion needle can be blocked outside during puncture, the probability that the infusion needle carries the insoluble particles to enter an infusion bag is effectively prevented, and elastic vibration force generated when the infusion needle punctures the multilayer co-extrusion film is formed by utilizing the elasticity of the multilayer co-extrusion film, so that fragments on the surface of the infusion needle can be separated from the surface during the multilayer co-extrusion film, and are blocked outside by the multilayer co-extrusion film, and puncture scraps are reduced or even eliminated. The multilayer co-extruded film is welded on the end face of the covering film and the lower end face of the inner plug 224 through thermal welding or ultrasonic welding, the blow molding production process characteristics of the multilayer co-extruded film determine that the uniformity, accuracy and stability of the quality control in the production process are far higher than those of an injection molding process, repeated adaptation and verification prove that the probability of scrap falling during puncture can be basically stopped or furthest reduced by adopting the multilayer co-extruded film for transfusion; reducing insoluble particles in the infusion bag to ensure the safety of infusion.

Example 2

As shown in fig. 5 to 8, the present embodiment is different from embodiment 1 in that: the first connector tube 200 includes two piercing end portions 220, and the two piercing end portions 220 are arranged at intervals in the radial direction of the first connector tube 200 and communicate with the same first communicating chamber 210. In particular, the two puncture end parts 220 are used for respectively dispensing and infusing, so that the pollution risk caused by repeated puncture of one inner plug 224 when one puncture end part 220 is used for dispensing and infusing is avoided. Optionally, the inner diameters of the puncture cavities 222 in the two puncture ends 220 are different in size, so that the radii of the inner plugs 224 formed by injection molding and filling are different in size, the small inner plug 224 in the puncture end 220 is used for dispensing medicine, the large inner plug 224 in the puncture end 220 is used for transfusion, and the two inner plugs 224 are used for distinguishing the use by medical staff. Optionally, the inner plugs 224 in the two piercing ends 220 are each of a different color to facilitate differentiated use by the medical personnel. Optionally, the first connector tube 200 is formed by injection molding using a transparent material, so that the medical staff can directly observe the size or color of the inner plug 224. Preferably, the inner diameter of the large inner plug 224 is 10mm and the inner diameter of the small inner plug 224 is 7mm. Optionally, the first connector tube 200 is a boss structure with a small top and a large bottom to allow sufficient operative spacing between the two piercing ends 220.

Example 3

As shown in fig. 9 to 12, the present embodiment is different from embodiment 1 in that: the joint includes two first joint pipes 200, and the two first joint pipes 200 are arranged at intervals along the length direction of the joint base 100 and are both mounted on the same joint base 100. Specifically, the two first connector pipes 200 are used for respectively dispensing and infusing, so that the pollution risk caused by repeated puncture of the inner plug 224 when one first connector pipe 200 is used for dispensing and infusing is avoided. Optionally, the inner diameters of the puncture cavities 222 in the two puncture ends 220 are different in size, so that the radii of the inner plugs 224 formed by injection molding and filling are different in size, the small inner plug 224 in the puncture end 220 is used for dispensing medicine, the large inner plug 224 in the puncture end 220 is used for transfusion, and the two inner plugs 224 are used for distinguishing the use by medical staff. Optionally, the inner plugs 224 in the two piercing ends 220 are each of a different color to facilitate differentiated use by the medical personnel. Optionally, the first connector tube 200 is injection molded from a transparent material, which facilitates direct observation of the size or color of the inner plug 224 by medical personnel. Preferably, the inner diameter of the large inner plug 224 is 10mm and the inner diameter of the small inner plug 224 is 7mm.

Example 4

As shown in fig. 13 to 16, the present embodiment is different from embodiment 1 in that: the first connector tube 200 further includes a first sealing end portion 230, the puncturing end portion 220 and the first sealing end portion 230 are arranged at intervals along a radial direction of the first connector tube 200 and are communicated with the same first communicating cavity 210, and the first sealing end portion 230 includes a first sealing shell 231, a first sealing cavity 232 formed by surrounding an inner side wall of the first sealing shell 231 along a circumferential direction and used for being connected with an infusion needle in a sealing mode, and a second upper sealing portion 233 formed integrally with an upper end portion of the first sealing shell 231 and used for sealing an upper end opening of the first sealing cavity 232. Specifically, puncture tip 220 is used for dispensing medicine, first sealed tip 230 is used for the infusion, first sealed chamber 232 realizes the puncture direction to the infusion needle, and the internal diameter of first sealed chamber 232 and the external diameter interference fit of infusion needle, in order to realize sealed after the puncture, seal the upper end opening of first sealed chamber 232 through second upper seal portion 233, in order to prevent that first sealed chamber 232 from being polluted by external environment, and second upper seal portion 233 and first seal housing 231 integrated into one piece, structural stability is good, it is sealed reliable, in order also can not leak in the liquid medicine gets into first sealed chamber 232. It should be understood that the inner plug 224 is a key part affecting the sealing performance of the connector, and the price is often relatively expensive, but the present solution realizes the sealing after the puncture transfusion by the first sealing cavity 232 which is in interference fit with the transfusion needle, so as to realize the sealing during the puncture transfusion without using the inner plug 224, simplify the manufacturing process steps, and greatly reduce the manufacturing cost of the connector. It should be understood that the infusion bag is set upright to prevent leakage of the medical fluid when the infusion needle is punctured or pulled out, and the infusion bag is hung upside down to naturally infuse by gravity during the infusion. Optionally, the second upper sealing portion 233 is a frangible cap or a pull-tab to facilitate opening by a medical professional. Optionally, the first connector tube 200 is a boss structure with a small top and a large bottom to allow sufficient operative spacing between the piercing end 220 and the first sealing end 230. Optionally, a second lower sealing film is welded and attached to the lower end surface of the first sealing housing 231 to seal the lower end opening of the first sealing cavity 232, so that the infusion needle can be punctured when the infusion bag is hung upside down. Optionally, the second lower sealing film is a multilayer co-extrusion film which has the characteristics of strong barrier property, oxygen resistance, water resistance, moisture resistance, mechanical property, high explosion resistance, puncture resistance, tear resistance, high temperature resistance, low temperature resistance, oil resistance, good fragrance retention, no toxicity, no odor, good heat sealing property, softness, high permeability, high composite peel strength, strong environment resistance and the like, the multilayer co-extrusion film is not prone to puncture and burst after being pasted with the film, the film is uniform in thickness and not prone to puncture and needle blockage, insoluble particles on the surface of the infusion needle can be blocked outside during puncture, the probability that the infusion needle carries the insoluble particles to enter the infusion bag is effectively prevented, and elastic vibration force generated when the infusion needle punctures the multilayer co-extrusion film is formed by utilizing the elasticity of the multilayer co-extrusion film, so that fragments on the surface of the infusion needle can be separated from the surface and blocked outside by the multilayer co-extrusion film, and puncture and falling fragments are reduced or even eliminated.

Example 5

As shown in fig. 17 to 20, the present embodiment is different from embodiment 1 in that: the connector comprises a second connector tube 300, the first connector tube 200 and the second connector tube 300 are arranged at intervals along the length direction of the connector base 100 and are mounted on the same connector base 100, the second connector tube 300 comprises a second communicating cavity 310 used for communicating the inner cavity of the infusion bag and a second sealing end portion 320 communicated with the second communicating cavity 310, and the second sealing end portion 320 comprises a second sealing shell 321, a second sealing cavity 322 formed by the inner side wall of the second sealing shell 321 in a circumferential enclosing mode and used for being connected with the infusion needle in a sealing mode, and a third upper sealing portion 323 integrally formed with the upper end portion of the second sealing shell 321 and used for sealing the upper end opening of the second sealing cavity 322. Specifically, the puncture end 220 is used for dispensing medicine, the second sealing end 320 is used for infusion, the second communicating cavity 310 communicates with an inner cavity of an infusion bag, so that liquid medicine infusion can be performed after the infusion needle punctures the second sealing end 320, the puncture guide of the infusion needle is realized through the second sealing cavity 322, the inner diameter of the second sealing cavity 322 is in interference fit with the outer diameter of the infusion needle, so that sealing after puncture is realized, the upper end opening of the second sealing cavity 322 is sealed through the third upper sealing part 323, so that the second sealing cavity 322 is prevented from being polluted by the external environment, the third upper sealing part 323 and the second sealing shell 321 are integrally formed, the structure stability is good, sealing is reliable, and leakage cannot occur even when the liquid medicine enters the second sealing cavity 322. It should be understood that the infusion bag is set upright to prevent leakage of the medical fluid when the infusion needle is punctured or pulled out, and the infusion bag is hung upside down during infusion to naturally infuse by gravity. Optionally, the third upper sealing portion 323 is a frangible cap or a pull-ring to facilitate opening by the healthcare worker. Optionally, a third lower sealing film is welded and attached to the lower end surface of the second sealing shell 321 to seal the lower end opening of the second sealing cavity 322, so that the infusion needle can be punctured when the infusion bag is hung upside down. Optionally, the third lower sealing film is a multilayer co-extrusion film, the multilayer co-extrusion film has strong barrier property, can prevent oxygen, water and moisture, and has strong mechanical property, high explosion resistance, high puncture resistance, high tear resistance, high temperature resistance, low temperature resistance, oil resistance, good fragrance retention, no toxicity, no odor, good heat sealing property, softness, high permeation resistance, high composite peel strength, strong environmental resistance and the like.

Example 6

As shown in fig. 21 to 24, the present embodiment is different from embodiment 1 in that: the connector comprises a third connector pipe 400, the first connector pipe 200 and the third connector pipe 400 are arranged at intervals along the length direction of the connector base 100 and are installed on the same connector base 100, and the third connector pipe 400 comprises a third communicating cavity 410 used for communicating the inner cavity of the infusion bag, a connecting platform 420 used for connecting the outer cover body and a tapered opening 430 which is formed by enclosing the inner side wall of the connecting platform 420 and communicated with the third communicating cavity 410 and is used for communicating the inner cavity of the outer cover body. Specifically, the first connector tube 200 is used for dispensing medicine, the third connector tube 400 is used for infusion, the third connector tube 400 is communicated with the inner cavity of the infusion bag through the third communicating cavity 410, is connected with the outer cover body through the connecting platform 420, and is communicated with the inner cavity of the outer cover body through the tapered opening 430, so that stable puncture of the infusion needle is ensured, and infusion of liquid medicine is realized. It should be understood that the third joint pipe 400 is connected with the cap body of different structures and forms in the prior art to manufacture and assemble according to different requirements, so that the application range is improved.

The infusion bag of this embodiment includes the integral inner cover film connector of any of the above embodiments. Specifically, through adopting the opening of the sealed infusion bag of integral interior tectorial membrane joint to improve production efficiency, reduce the injection moulding processing degree of difficulty, manufacturing cost and the puncture degree of difficulty, the medical personnel of being convenient for use, the practicality is strong, is suitable for extensive popularization and application.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a tectorial membrane connects in integral, includes connector base (100) and first adapter tube (200) be connected with connector base (100), first adapter tube (200) including first intercommunication chamber (210) that are used for communicateing the inner chamber of infusion bag and with puncture tip (220) of first intercommunication chamber (210) intercommunication, its characterized in that, puncture tip (220) include:

the inner side wall of the puncture shell (221) is circumferentially enclosed to form a puncture cavity (222), the puncture cavity (222) is communicated with the first communication cavity (210), and the inner diameter of the puncture cavity (222) is smaller than that of the first communication cavity (210), so that the lower end face of the puncture shell (221) radially extends inwards to form a film-coated end face;

a first upper sealing part (223) which is formed integrally with the upper end part of the puncture housing (221) and seals the upper end opening of the puncture cavity (222);

the inner plug (224) is bonded and compatibly connected with the inner side wall of the puncture shell (221) and the lower end face of the first upper sealing part (223) and is used for being filled and molded in the puncture cavity (222) through an injection molding process, and the lower end face of the inner plug (224) is flush with the end face of the coating;

and a first lower sealing film (225) which is welded and attached to the lower end face of the inner plug (224) and the end face of the coating film and is used for sealing the lower end opening of the puncture cavity (222).

2. The one-piece inner membrane joint of claim 1, wherein the first upper sealing portion (223) is a frangible cap or a pull ring, and a frangible structure is provided between the first upper sealing portion (223) and the puncture housing (221) for facilitating the first upper sealing portion (223) to break or fracture to expose the inner plug (224), the frangible structure having a radial dimension less than a radial dimension of the puncture lumen (222).

3. The integral inner membrane joint according to claim 1, wherein the lower end surface of the inner plug (224) is provided with a piercing groove formed by being depressed upward.

4. The monolithic innerliner joint as set forth in claim 1, wherein the first lower sealant film (225) is a multi-layer coextruded film.

5. The integral inner membrane joint according to any one of claims 1 to 4, wherein the first joint tube (200) comprises two piercing end portions (220), and the two piercing end portions (220) are arranged at intervals in a radial direction of the first joint tube (200) and communicate with the same first communicating chamber (210).

6. The integral inner membrane-covered joint according to any one of claims 1 to 4, wherein the joint comprises two first joint pipes (200), and the two first joint pipes (200) are arranged at intervals along the length direction of the joint base (100) and are both mounted on the same joint base (100).

7. The integral inner membrane-covered joint according to any one of claims 1 to 4, wherein the first joint tube (200) further comprises a first sealing end portion (230), the puncturing end portion (220) and the first sealing end portion (230) are arranged at intervals along the radial direction of the first joint tube (200) and are communicated with the same first communicating cavity (210), and the first sealing end portion (230) comprises a first sealing shell (231), a first sealing cavity (232) which is formed by enclosing the inner side wall of the first sealing shell (231) along the circumferential direction and is used for being connected with the infusion needle in a sealing mode, and a second upper sealing portion (233) which is formed by integrally with the upper end portion of the first sealing shell (231) and is used for sealing the upper end opening of the first sealing cavity (232).

8. The integral type inner coating joint according to any one of claims 1 to 4, wherein the joint comprises a second joint tube (300), the first joint tube (200) and the second joint tube (300) are arranged at intervals along the length direction of the joint seat (100) and are both mounted on the same joint seat (100), the second joint tube (300) comprises a second communication cavity (310) for communicating with the inner cavity of the infusion bag and a second sealing end part (320) communicated with the second communication cavity (310), and the second sealing end part (320) comprises a second sealing shell (321), a second sealing cavity (322) formed by surrounding the inner side wall of the second sealing shell (321) along the circumferential direction and used for being in sealing connection with the infusion needle, and a third upper sealing part (323) integrally formed with the upper end part of the second sealing shell (321) and used for sealing the upper end opening of the second sealing cavity (322).

9. The integral type inner coating joint according to any one of claims 1 to 4, wherein the joint comprises a third joint pipe (400), the first joint pipe (200) and the third joint pipe (400) are arranged at intervals along the length direction of the joint base (100) and are both arranged on the same joint base (100), and the third joint pipe (400) comprises a third communicating cavity (410) for communicating with the inner cavity of the infusion bag, a connecting platform (420) for connecting with the outer cover body and a tapered opening (430) which is formed by enclosing the inner side wall of the connecting platform (420) and is communicated with the third communicating cavity (410) and is used for communicating with the inner cavity of the outer cover body.

10. An infusion bag comprising a unitary inner coated connector according to any one of claims 1 to 9.