CN219783196U - Integral inner tectorial membrane joint and infusion bag - Google Patents

Abstract

The utility model discloses an integral inner tectorial membrane connector, which comprises a connector seat and a first connector pipe connected with the connector seat, wherein the first connector pipe comprises a first communication cavity 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 puncture shell is circumferentially enclosed on the inner side wall 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 surface of the puncture shell extends inwards in the radial direction to form a tectorial membrane end surface; the first upper sealing part is integrally formed with the upper end part of the puncture shell; the inner plug is in adhesive compatible connection 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 level 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 covering film. In addition, the utility model also discloses an infusion bag comprising the integral inner tectorial membrane joint.

Description

Integral inner tectorial membrane joint and infusion bag

Technical Field

The utility model relates to the technical field of infusion connectors, in particular to an integral inner tectorial membrane connector. In addition, the utility model also relates to an infusion bag comprising the integral inner coating joint.

Background

The infusion bag is a medical article widely applied to the medical industry, and is mainly used for infusion treatment of patients, an infusion connector is arranged on the infusion bag so as to conduct puncture guiding and sealing after puncture on the infusion needle, the infusion connector is usually composed of a connector seat and a connector tube, the connector seat is welded at an opening of the infusion bag, and then the connector tube conducts puncture guiding and sealing, the infusion bag is usually used in a reverse hanging mode so as to realize natural infusion of liquid medicine by utilizing gravity, therefore, an inner plug is arranged in the connector tube so as to tightly hold the inner plug after the inner plug is punctured by the infusion needle, so that sealing after puncture and infusion of the infusion needle are realized, and the patient always pulls out the infusion needle under the condition that liquid medicine still remains in the infusion bag in the infusion process.

The joint tube on the existing infusion joint is usually assembled by an inner tube body, an inner plug and an outer cover body, and the inner tube body, the inner plug and the outer cover body are respectively and independently manufactured so as to be mutually connected by the inner tube body and the outer cover body to form a cavity for fixedly sealing the inner plug after the manufacturing is finished, but the infusion joint 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 all required to be manufactured independently, and the inner pipe body, the inner plug and the outer cover body are also required to be assembled with each other after the manufacturing is completed, so that the process steps are numerous, 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 pipe body and the outer cover body, the sealing requirement of the inner plug is high based on the specificity of a medical product, the assembly precision requirement between the inner pipe body and the outer cover body is high, and the inner pipe body and the outer cover body are usually injection molded by adopting an injection molding process, so that the injection molding processing difficulty is increased by the high-requirement assembly precision; 3. the infusion bag is high in production cost, in the infusion treatment process, 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 penetrated, and the infusion needle cannot be brought out of the joint 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 material strength requirements on the inner pipe body or the outer cover body are further high when the infusion bag is used for injection molding, the high strength and limited material types meeting the medical requirements are realized, the price is relatively high, 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 materials can not contact with the liquid medicine before the puncture, therefore, the interior body still is provided with integrated into one piece's interior sealing portion in order to prevent interior stopper and liquid medicine contact, because interior sealing portion and interior body integrated into one piece, the material of both is the same, and the injection molding material of interior body often possesses certain intensity requirement for interior sealing portion also possesses certain intensity, in order to hinder the puncture of infusion needle when the infusion needle puncture, has increased the puncture degree of difficulty.

Disclosure of Invention

The utility model provides an integral inner tectorial membrane connector and an infusion bag, which are used for solving the technical problems of low production efficiency, high injection molding processing difficulty, high production cost and high puncture difficulty of the infusion connector on the existing infusion bag.

According to one aspect of the present utility model, there is provided a unitary inner membrane adapter comprising an adapter seat and a first adapter tube connected to the adapter seat, the first adapter tube comprising a first communication chamber for communicating with an interior chamber of an infusion bag and a piercing end in communication with the first communication chamber, the piercing end comprising: the puncture shell is circumferentially enclosed on the inner side wall 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 surface of the puncture shell extends inwards in the radial direction to form a tectorial membrane end surface; the first upper sealing part is integrally formed with the upper end part of the puncture housing and is used for sealing an upper end opening of the puncture cavity; the inner plug is in adhesive compatible connection 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 formed 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 tectorial membrane; 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 covering film and is used for sealing the lower end opening of the puncture cavity.

As a further improvement of the above technical scheme:

further, the first upper sealing part is a frangible cap or a pull ring, and a frangible structure which is used for facilitating the breakage or breaking of the first upper sealing part so as to expose the inner plug is arranged between the first upper sealing part and the puncture housing, and the radial dimension of the frangible structure is smaller than that of the puncture cavity.

Further, the lower end face of the inner plug is provided with a puncture groove formed by upwards sinking.

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

Further, the first connector tube includes two piercing end portions arranged at intervals along a radial direction of the first connector tube and communicated with the same first communication cavity.

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

Further, the first joint pipe further comprises a first sealing end part, the puncture end part and the first sealing end part are distributed at intervals along the radial direction of the first joint pipe and are communicated with the same first communication cavity, the first sealing end part comprises a first sealing shell, a first sealing cavity which is formed by circumferentially combining the inner side wall of the first sealing shell and is used for being in sealing connection with the infusion needle, and a second upper sealing part which is integrally formed with the upper end part of the first sealing shell and is used for sealing an upper end opening of the first sealing cavity.

Further, connect including the second joint pipe, first joint pipe and second joint pipe are arranged and all install on same joint seat along the length direction interval of joint seat, the second joint pipe is including the second intercommunication chamber that is used for the inner chamber of intercommunication infusion bag and with the second sealed tip of second intercommunication chamber intercommunication, the second sealed tip includes the second seal shell, the inside wall of second seal shell closes the second seal chamber that is used for with infusion needle sealing connection and the upper end integrated into one piece's of second seal shell third upper seal portion that is used for sealing the upper end opening of second seal chamber along circumference.

Further, the joint comprises a third joint pipe, the first joint pipe and the third joint pipe are distributed at intervals along the length direction of the joint seat and are all installed on the same joint seat, and the third joint pipe comprises a third communication cavity used for communicating an inner cavity of the infusion bag, a connecting platform used for connecting the outer cover body and a conical opening formed by encircling the inner side wall of the connecting platform and communicated with the third communication cavity and used for communicating the inner cavity of the outer cover body.

According to another aspect of the present utility model, there is also provided an infusion bag comprising the integral inner film-covered joint described above.

The utility model has the following beneficial effects:

the integral inner tectorial membrane connector of the utility model is obtained by injection molding of the connector seat by adopting an injection molding process, the first connector tube is molded together with the injection molding of the connector seat, or the first connector tube is molded independently, then the first connector tube is welded and fixed on the connector seat by adopting a welding process, the first connector tube is communicated with the first communicating cavity through the puncture end part, and then the first communicating cavity is communicated with the inner cavity of the infusion bag, so that the infusion of liquid medicine can be realized when the infusion needle punctures the puncture end part, the puncture end part forms a puncture cavity communicated with the first communicating cavity through the puncture shell, then an inner plug is filled in the puncture cavity by adopting the injection molding process, so as to realize the sealing after the puncture of the infusion needle, the upper end opening of the puncture cavity is sealed by the first upper sealing part before the puncture, the inner plug is prevented from being polluted by the external environment, and the first upper sealing part is molded together with the injection molding of the puncture shell, 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 face of the puncture shell is provided with an inward convex tectorial membrane end face, the lower end face of the inner plug is flush with the tectorial membrane end face, the first lower sealing membrane can be welded on the lower end face of the inner plug and the tectorial membrane end face simultaneously by adopting a welding process, so as to realize reliable sealing of the lower end opening of the puncture cavity and prevent liquid medicine from contacting with the inner plug, the integral inner tectorial membrane joint of the scheme can be manufactured by adopting a mode of double-material injection molding firstly and then adopting a welding process, the process steps are fewer, the production period is short, the production efficiency is high, compared with the prior art, the sealing of the inner plug is not assembled by a plurality of components, the injection molding processing difficulty is greatly reduced, the fixing of the inner plug depends on the bonding compatible connection between the inner plug and the puncture shell, the material strength requirement on the material of the first joint pipe is low, the selection range of materials is enlarged, materials with relatively low price are convenient to select for production and manufacture, so that the production cost is reduced, meanwhile, the inner sealing part is replaced by the first lower sealing film, the puncture difficulty is greatly reduced, the use of medical staff is convenient, the practicability is high, and the device is suitable for wide popularization and application.

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

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is a schematic structural view of a monolithic inner film joint of preferred embodiment 1 of the present utility model;

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

FIG. 3 is a schematic structural view of a monolithic inner film joint according to a preferred embodiment 1 of the present utility model;

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

FIG. 5 is a schematic structural view of a monolithic inner film joint according to a preferred embodiment 1 of the present utility model;

FIG. 6 is a cross-sectional view of the integral inner wrap joint of FIG. 5;

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

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

FIG. 9 is a schematic structural view of a monolithic inner film joint of preferred embodiment 1 of the present utility model;

FIG. 10 is a cross-sectional view of the integral inner wrap joint of FIG. 9;

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

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

FIG. 13 is a schematic structural view of a monolithic inner film joint according to a preferred embodiment 1 of the present utility model;

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

FIG. 15 is a schematic structural view of a monolithic inner film joint of preferred embodiment 1 of the present utility model;

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

FIG. 17 is a schematic view of the construction of the integral inner coating tab of preferred embodiment 1 of the utility model;

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

FIG. 19 is a schematic view showing the structure of a monolithic inner film joint according to a preferred embodiment 1 of the present utility model;

FIG. 20 is a cross-sectional view of the integral inner wrap joint of FIG. 19;

FIG. 21 is a schematic structural view of a monolithic inner film joint of preferred embodiment 1 of the present utility model;

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

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

fig. 24 is a cross-sectional view of the integral inner coating tab of fig. 23.

Legend description:

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

Detailed Description

Embodiments of the utility model are described in detail below with reference to the attached drawing figures, but the utility model can be practiced in a number of different ways, as defined and covered below.

FIG. 1 is a schematic structural view of a monolithic inner film joint of preferred embodiment 1 of the present utility model; FIG. 2 is a cross-sectional view of the integral inner wrap joint of FIG. 1; FIG. 3 is a schematic structural view of a monolithic inner film joint according to a preferred embodiment 1 of the present utility model; FIG. 4 is a cross-sectional view of the integral inner wrap joint of FIG. 3; FIG. 5 is a schematic structural view of a monolithic inner film joint according to a preferred embodiment 1 of the present utility model; FIG. 6 is a cross-sectional view of the integral inner wrap joint of FIG. 5; FIG. 7 is a schematic structural view of a monolithic inner film joint according to a preferred embodiment 1 of the present utility model; FIG. 8 is a cross-sectional view of the integral inner wrap joint of FIG. 7; FIG. 9 is a schematic structural view of a monolithic inner film joint of preferred embodiment 1 of the present utility model; FIG. 10 is a cross-sectional view of the integral inner wrap joint of FIG. 9; FIG. 11 is a schematic structural view of a monolithic inner film joint according to a preferred embodiment 1 of the present utility model; FIG. 12 is a cross-sectional view of the integral inner wrap joint of FIG. 11; FIG. 13 is a schematic structural view of a monolithic inner film joint according to a preferred embodiment 1 of the present utility model; FIG. 14 is a cross-sectional view of the integral inner wrap joint of FIG. 13; FIG. 15 is a schematic structural view of a monolithic inner film joint of preferred embodiment 1 of the present utility model; FIG. 16 is a cross-sectional view of the integral inner wrap joint of FIG. 15; FIG. 17 is a schematic view of the construction of the integral inner coating tab of preferred embodiment 1 of the utility model; FIG. 18 is a cross-sectional view of the integral inner wrap joint of FIG. 17; FIG. 19 is a schematic view showing the structure of a monolithic inner film joint according to a preferred embodiment 1 of the present utility model; FIG. 20 is a cross-sectional view of the integral inner wrap joint of FIG. 19; FIG. 21 is a schematic structural view of a monolithic inner film joint of preferred embodiment 1 of the present utility model; FIG. 22 is a cross-sectional view of the integral inner wrap joint of FIG. 21; FIG. 23 is a schematic structural view of a monolithic inner film joint according to a preferred embodiment 1 of the present utility model; fig. 24 is a cross-sectional view of the integral inner coating tab of fig. 23.

Example 1

As shown in fig. 1 to 4, the integral type inner film-covered joint of the present embodiment includes a joint base 100 and a first joint tube 200 connected to the joint base 100, the first joint tube 200 includes a first communication cavity 210 for communicating with an inner cavity of an infusion bag and a piercing end 220 communicating with the first communication cavity 210, and the piercing end 220 includes: the puncture housing 221, the inner side wall of the puncture housing 221 forms a puncture cavity 222 along the circumferential direction, the puncture cavity 222 is communicated with the first communication cavity 210, and the inner diameter of the puncture cavity 222 is smaller than the inner diameter of the first communication cavity 210, so that the lower end surface of the puncture housing 221 extends inwards along the radial direction to form a covered end surface; a first upper sealing part 223 integrally formed with an upper end portion of the penetration housing 221 for sealing an upper end opening of the penetration cavity 222; an inner plug 224, which is in adhesive compatible connection 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 formed in the puncture cavity 222 through an injection molding process, and the lower end surface of the inner plug 224 is level with the end surface of the coating film; a first lower sealing film 225 is welded to the lower end surface of the inner plug 224 and the end surface of the cover film for sealing the lower end opening of the puncture chamber 222. Specifically, the integral type inner tectorial membrane joint of the utility model, the joint seat 100 is obtained by injection molding through an injection molding process, the first joint pipe 200 is molded together with the injection molding of the joint seat 100, or the first joint pipe 200 is molded singly by injection molding, the first joint pipe 200 is welded and fixed on the joint seat 100 through a welding process, the first communicating cavity 210 is communicated through the puncture end 220, the inner cavity of the infusion bag is communicated through the first communicating cavity 210, so that when the puncture end 220 is punctured by an infusion needle, the infusion of liquid medicine can be realized, the puncture end 220 forms a puncture cavity 222 communicated with the first communicating cavity 210 through the puncture shell 221, the puncture cavity 222 is filled with an inner plug 224 through the injection molding process, so as to realize sealing after the puncture of the infusion needle, the upper end opening of the puncture cavity 222 is sealed through a first upper sealing part 223 before the puncture, the inner plug 224 is prevented from being polluted by the external environment, the first upper sealing part 223 is molded together with the injection molding of the puncture housing 221, the structural stability is good, the sealing is reliable, because the inner diameter of the puncture cavity 222 is smaller than the inner diameter of the first communication cavity 210, the lower end face of the puncture housing 221 is provided with an inward convex covered end face, and the lower end face of the inner plug 224 is flush with the covered end face, the first lower sealing film 225 can be welded on the lower end face and the covered end face of the inner plug 224 simultaneously by adopting a welding process, so as to realize the reliable sealing of the lower end opening of the puncture cavity 222, prevent the liquid medicine from contacting the inner plug 224, the integral inner covered joint of the scheme can be manufactured by adopting a double-material injection molding mode and then adopting a welding process mode, the process steps are fewer, the production cycle is short, the production efficiency is high, and compared with the prior art, the sealing of the inner plug 224 is not dependent on assembly among a plurality of parts, the injection molding processing difficulty is greatly reduced, the fixing of the inner plug 224 depends on the bonding compatible connection between the inner plug 224 and the puncture housing 221, the requirement on the material strength of the first joint pipe 200 is low, the selection range of the material is enlarged, the material with relatively low price is convenient to be selected for production and manufacture, 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 use by medical staff is convenient, the practicability is strong, and the device is suitable for wide popularization and application. It should be understood that the two-part injection molding process and the welding process are well known to those skilled in the art, and are not repeated here. Alternatively, the first communication chamber 210 has an inner diameter of 10.5mm and the penetration chamber 222 has an inner diameter of 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 be broken or broken to expose the inner plug 224 is disposed between the first upper sealing portion 223 and the puncture housing 221, and the radial dimension of the frangible structure is smaller than the radial dimension of the puncture cavity 222. Specifically, the easy-to-break cap or the pull ring is easy to open to expose the inner plug 224, and the easy-to-break cap is convenient to break or the pull ring is convenient to break through the easy-to-break structure, so that the easy-to-break cap is further convenient for medical staff to open and use. It should be appreciated that the frangible structure has a radial dimension that is smaller than the radial dimension of the puncture lumen 222 (i.e., smaller than the radial dimension of the inner plug 224), and when the first upper seal 223 breaks or breaks, it breaks away from the inner plug 224, thereby exerting a force on the inner plug 224, and the inner plug 224 is restrained axially by the retainer ring formed by the radially inward extension of the puncture housing 221, so that the inner plug 224 is stably held within the puncture lumen 222. During puncturing, the inner plug 224 is stably maintained in the puncturing cavity 222 by the adhesion compatible force between the inner plug 224 and the puncturing housing 221.

In this embodiment, the lower end surface of the inner plug 224 is provided with a piercing recess formed by recessing upward. Specifically, the thickness of the infusion needle required to pierce the inner plug 224 is reduced through the piercing recess, so that the piercing difficulty is reduced, and the cutting resistance is reduced.

In this embodiment, the first lower sealing film 225 is a multilayer co-extruded film. Specifically, the first lower sealing film 225 is a multilayer co-extruded film. In this embodiment, the first lower sealing film 225 is a multilayer co-extruded film. Specifically, the multilayer co-extrusion film has the characteristics of strong barrier property, oxygen prevention, water resistance, moisture resistance, high mechanical property, high anti-explosion performance, strong puncture resistance and tear resistance, high temperature resistance, low temperature resistance, oil resistance, good fragrance retention, no toxicity, no smell, good heat sealing performance, softness, high permeability, high composite peeling strength, strong environmental resistance and the like, the multilayer co-extrusion film is not easy to puncture and burst after being stuck, the film thickness is uniform, the puncture 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 into an infusion bag is effectively prevented, the elastic vibration force during the multilayer co-extrusion film puncture is utilized by the infusion needle, so that chips on the surface of the infusion needle can be separated from the surface of the infusion needle during the multilayer co-extrusion film, and puncture falling chips are blocked outside by the multilayer co-extrusion film, and puncture falling chips are reduced or even eliminated. The production process characteristics of the multi-layer co-extrusion film blow molding determine that the uniformity, the accuracy and the stability of the quality control of the production process are far higher than those of the injection molding process by welding the multi-layer co-extrusion film on the film-covered end surface and the lower end surface of the inner plug 224 through heat welding or ultrasonic welding, repeated adaptation and verification prove that the probability of falling scraps during puncture can be basically stopped or furthest reduced by adopting the multi-layer co-extrusion film for transfusion; insoluble particles in the infusion bag are reduced, so that the safety of infusion is ensured.

Example 2

As shown in fig. 5 to 8, this embodiment differs 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 communication chamber 210. Specifically, the two puncture ends 220 are used for respectively dispensing and transfusion, so that pollution risks caused by repeated puncture of one inner plug 224 when one puncture end 220 is used for dispensing and transfusion are avoided. Optionally, the inner diameters of the puncture cavities 222 in the two puncture end portions 220 are different, so that the radius of the inner plugs 224 formed by injection filling is different, the small inner plugs 224 in the puncture end portions 220 are used for dispensing, the large inner plugs 224 in the puncture end portions 220 are used for transfusion, and the medical staff can conveniently distinguish the use by the large inner plugs 224 and the small inner plugs 224. Optionally, the inner plugs 224 in the two piercing end portions 220 are each of a different color for ease of use by the healthcare worker. Alternatively, the first connector tube 200 is injection molded from a transparent material to facilitate direct viewing of the size or color of the inner plug 224 by a medical professional. 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 smaller top and a larger bottom so that a sufficient operating space is left between the two piercing ends 220.

Example 3

As shown in fig. 9 to 12, this embodiment differs from embodiment 1 in that: 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 seat 100 and are all installed on the same joint seat 100. Specifically, the two first joint pipes 200 are used for respectively dispensing and transfusion, so that pollution risks caused by repeated puncture of one inner plug 224 when one first joint pipe 200 is used for dispensing and transfusion are avoided. Optionally, the inner diameters of the puncture cavities 222 in the two puncture end portions 220 are different, so that the radius of the inner plugs 224 formed by injection filling is different, the small inner plugs 224 in the puncture end portions 220 are used for dispensing, the large inner plugs 224 in the puncture end portions 220 are used for transfusion, and the medical staff can conveniently distinguish the use by the large inner plugs 224 and the small inner plugs 224. Optionally, the inner plugs 224 in the two piercing end portions 220 are each of a different color for ease of use by the healthcare worker. Alternatively, the first connector tube 200 is injection molded from a transparent material to facilitate direct viewing of the size or color of the inner plug 224 by a medical professional. 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, this embodiment differs from embodiment 1 in that: the first coupling tube 200 further includes a first sealing end portion 230, the piercing end portion 220 and the first sealing end portion 230 are arranged at intervals in a radial direction of the first coupling tube 200 and communicate with the same first communication chamber 210, and the first sealing end portion 230 includes a first sealing housing 231, a first sealing chamber 232 formed by circumferentially enclosing an inner sidewall of the first sealing housing 231 for sealing connection with an infusion needle, and a second upper sealing portion 233 integrally formed with an upper end portion of the first sealing housing 231 for sealing an upper end opening of the first sealing chamber 232. Specifically, the piercing end 220 is used for dispensing, the first sealing end 230 is used for infusion, the first sealing cavity 232 is used for realizing piercing guide of an infusion needle, the inner diameter of the first sealing cavity 232 is in interference fit with the outer diameter of the infusion needle so as to realize sealing after piercing, the upper end opening of the first sealing cavity 232 is sealed through the second upper sealing part 233 so as to prevent the first sealing cavity 232 from being polluted by the external environment, and the second upper sealing part 233 and the first sealing shell 231 are integrally formed, so that the structural stability is good, the sealing is reliable, and leakage cannot occur when the liquid medicine enters the first sealing cavity 232. It should be appreciated that the inner plug 224 is a critical component affecting the tightness of the connector, which is often relatively expensive, but the present solution provides for a post-lancing seal through the first seal cavity 232 in interference fit with the infusion needle to provide for a post-lancing seal without the use of the inner plug 224, simplifying manufacturing process steps and greatly reducing the manufacturing cost of the connector. It should be understood that the infusion bag is being placed when the infusion needle is pierced or pulled out to prevent leakage of the medical fluid, and is being hung upside down during infusion to allow natural infusion by gravity. Optionally, the second upper sealing portion 233 is a frangible cap or tab to facilitate opening by a healthcare worker. Optionally, the first connector tube 200 is a boss structure with a smaller top and a larger bottom so that a sufficient operational space is left between the piercing end 220 and the first sealing end 230. Optionally, a second lower sealing film is welded on the lower end surface of the first sealing housing 231 to seal the lower end opening of the first sealing cavity 232, so that infusion needle penetration can be performed when the infusion bag is hung upside down. Optionally, the second lower sealing film is a multilayer co-extrusion film, the multilayer co-extrusion film has the characteristics of strong barrier property, oxygen prevention, water resistance, moisture resistance, strong mechanical property, high anti-burst performance, strong puncture resistance, tear resistance, high temperature resistance, low temperature resistance, oil resistance, good fragrance retention, no toxicity, no smell, good heat sealing performance, softness, high permeability, high composite peeling strength, strong environmental resistance and the like, the multilayer co-extrusion film is not easy to puncture and burst after being stuck, the film thickness is uniform, the puncture 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 into an infusion bag is effectively prevented, the elasticity of the multilayer co-extrusion film is utilized, and the elastic vibration force during the puncture of the multilayer co-extrusion film by the infusion needle is formed, so that the chips on the surface of the infusion needle can be separated from the surface of the infusion needle during the multilayer co-extrusion film, and the puncture blocking phenomenon is reduced or even eliminated by the multilayer co-extrusion film.

Example 5

As shown in fig. 17 to 20, this embodiment differs from embodiment 1 in that: the joint includes the second joint pipe 300, first joint pipe 200 and second joint pipe 300 are arranged and all install on same joint seat 100 along the length direction interval of joint seat 100, the second joint pipe 300 includes the second intercommunication chamber 310 that is used for the inner chamber of intercommunication infusion bag and with the second seal tip 320 of second intercommunication chamber 310 intercommunication, the second seal tip 320 includes second seal housing 321, the inside wall of second seal housing 321 is along circumference closes the second seal chamber 322 that forms and be used for with infusion needle sealing connection and with the upper end integrated into one piece's of second seal housing 321 third upper seal portion 323 that is used for sealing the upper end opening of second seal chamber 322. Specifically, the piercing end 220 is used for dispensing, the second sealing end 320 is used for infusion, the second communicating cavity 310 is communicated with the inner cavity of the infusion bag, so that infusion of liquid medicine can be performed after the infusion needle pierces the second sealing end 320, piercing guide of the infusion needle is achieved 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, sealing after piercing is achieved, the upper end opening of the second sealing cavity 322 is sealed through the third upper sealing part 323, 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 structural stability is good, sealing is reliable, and leakage cannot occur when liquid medicine enters the second sealing cavity 322. It should be understood that the infusion bag is being placed when the infusion needle is pierced or pulled out to prevent leakage of the medical fluid, and is being hung upside down during infusion to allow natural infusion by gravity. Optionally, the third upper sealing portion 323 is a frangible cap or tab to facilitate opening by a healthcare worker. Optionally, a third lower sealing film is welded and attached to the lower end surface of the second sealing housing 321 to seal the lower end opening of the second sealing cavity 322, so that the infusion needle puncture can be performed 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 the characteristics of strong barrier property, oxygen prevention, water resistance, moisture resistance, strong mechanical property, high anti-burst performance, strong puncture resistance, tear resistance, high temperature resistance, low temperature resistance, oil resistance, good fragrance retention, no toxicity, no smell, good heat sealing performance, softness, high permeability, high composite peeling strength, strong environmental resistance and the like, the multilayer co-extrusion film is not easy to puncture and burst after being stuck, the film thickness is uniform, the puncture 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 into an infusion bag is effectively prevented, the elasticity of the multilayer co-extrusion film is utilized, and the elastic vibration force during the puncture of the multilayer co-extrusion film by the infusion needle is formed, so that the chips on the surface of the infusion needle can be separated from the surface of the infusion needle during the multilayer co-extrusion film, and the puncture blocking phenomenon is reduced or even eliminated by the multilayer co-extrusion film.

Example 6

As shown in fig. 21 to 24, this embodiment differs from embodiment 1 in that: the joint comprises a third joint pipe 400, the first joint pipe 200 and the third joint pipe 400 are distributed at intervals along the length direction of the joint seat 100 and are all installed on the same joint seat 100, and the third joint pipe 400 comprises a third communication cavity 410 used for communicating an inner cavity of an infusion bag, a connecting platform 420 used for connecting an outer cover body and a conical opening 430 formed by encircling the inner side wall of the connecting platform 420 and communicated with the third communication cavity 410 and used for communicating the inner cavity of the outer cover body. Specifically, the first connector tube 200 is used for dispensing, 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 communication cavity 410, the outer cover body is connected through the connecting platform 420, the inner cavity of the outer cover body is communicated through the conical opening 430, stable puncture of the infusion needle is ensured, and liquid medicine infusion is realized. It should be appreciated that the third joint pipe 400 is connected with the cover body with different structures and forms in the prior art, so as to manufacture and assemble according to different requirements, thereby improving the application range.

The infusion bag of the present embodiment includes the integral inner film-covered joint of any of the embodiments described above. Specifically, through adopting the opening of integral inner tectorial membrane joint sealed infusion bag to improve production efficiency, reduce the processing degree of difficulty of moulding plastics, manufacturing cost and 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 of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. An integral inner film-covered joint, comprising a joint seat (100) and a first joint pipe (200) connected with the joint seat (100), wherein the first joint pipe (200) comprises a first communication cavity (210) used for communicating an inner cavity of an infusion bag and a puncture end part (220) communicated with the first communication cavity (210), and the integral inner film-covered joint is characterized in that the puncture end part (220) comprises:

the puncture device comprises a puncture shell (221), wherein a puncture cavity (222) is formed by surrounding the inner side wall of the puncture shell (221) along the circumferential direction, the puncture cavity (222) is communicated with a 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) extends inwards along the radial direction to form a tectorial membrane 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 cavity (222);

the inner plug (224) is in adhesive compatible connection 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 formed 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 covering film;

and a first lower sealing film (225) welded to the lower end surface of the inner plug (224) and the end surface of the covering film for sealing the lower end opening of the puncture chamber (222).

2. The integrated inner membrane joint according to claim 1, characterized in that the first upper sealing part (223) is a frangible cap or a pull ring, and a frangible structure for facilitating the breaking or breaking of the first upper sealing part (223) to expose the inner plug (224) is arranged between the first upper sealing part (223) and the puncture housing (221), and the radial dimension of the frangible structure is smaller than the radial dimension of the puncture cavity (222).

3. The integral type inner film joint as claimed in claim 1, wherein the lower end surface of the inner plug (224) is provided with a penetration groove formed by recessing upward.

4. The integral inner film joint of claim 1, wherein the first lower sealing film (225) is a multilayer co-extruded film.

5. The integral endocardial joint of any of claims 1-4, wherein the first joint tube (200) comprises two piercing ends (220), the two piercing ends (220) being spaced apart along the radial direction of the first joint tube (200) and in communication with the same first communication cavity (210).

6. The integral type inner film joint as claimed in 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 all installed on the same joint base (100).

7. The integrated 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 piercing 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 communication cavity (210), the first sealing end portion (230) comprises a first sealing shell (231), a first sealing cavity (232) formed by circumferentially closing the inner side wall of the first sealing shell (231) and used for sealing connection with an infusion needle, and a second upper sealing portion (233) integrally formed with the upper end portion of the first sealing shell (231) and used for sealing an upper end opening of the first sealing cavity (232).

8. The integrated inner film-covered 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 all installed on the same joint seat (100), the second joint tube (300) comprises a second communicating cavity (310) for communicating with the inner cavity of the infusion bag and a second sealing end part (320) communicated with the second communicating cavity (310), the second sealing end part (320) comprises a second sealing shell (321), a second sealing cavity (322) formed by combining the inner side wall of the second sealing shell (321) along the circumferential direction and used for being in sealing connection with an 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 an upper end opening of the second sealing cavity (322).

9. The integrated inner film-covered joint according to any one of claims 1 to 4, wherein the joint comprises a third joint tube (400), the first joint tube (200) and the third joint tube (400) are arranged at intervals along the length direction of the joint base (100) and are all arranged on the same joint base (100), and the third joint tube (400) comprises a third communication cavity (410) for communicating with the inner cavity of the infusion bag, a connecting platform (420) for connecting the outer cover body, and a conical mouth (430) which is formed by encircling the inner side walls of the connecting platform (420) and is communicated with the third communication cavity (410) and is used for communicating with the inner cavity of the outer cover body.

10. An infusion bag comprising the integral inner graft of any one of claims 1-9.