CN219783532U - Hot-pressing through hole type easy-tearing film joint and infusion bag - Google Patents

Abstract

The utility model discloses a hot-pressing through hole type easy-tearing film connector which comprises a connector seat and a first connector tube connected with the connector seat, wherein the first connector tube comprises a first communicating cavity used for communicating an inner cavity of an infusion bag, a first puncture end part communicated with the first communicating cavity and an inner plug arranged in the first puncture end part, the first puncture end part comprises a first puncture cavity used for containing the inner plug, an annular supporting edge which is integrally formed with the first puncture end part and is arranged in the first puncture cavity and is used for supporting the inner plug from the bottom, an outer pressing edge which is integrally formed with the first puncture end part and is bent and is used for fixing the inner plug through hot-pressing bending forming to be matched with the annular supporting edge, and a first easy-tearing film attached to the upper end surface of the outer pressing edge and used for sealing the top of the first puncture cavity, and the inner side wall of the annular supporting edge is enclosed to form a communicating opening respectively communicated with the first puncture cavity and the first communicating cavity. In addition, the utility model also discloses an infusion bag comprising the hot-pressing through hole type easy-tearing film joint.

Description

Hot-pressing through hole type easy-tearing film joint and infusion bag

Technical Field

The utility model relates to the technical field of infusion connectors, in particular to a hot-pressing through hole type easy-to-tear film connector. In addition, the utility model also relates to an infusion bag comprising the hot-pressing through hole type easy-tearing film joint.

Background

The infusion joint on the infusion bag is used for the puncture of infusion needle to realize the liquid medicine infusion, the infusion joint is usually the formation of joint seat connection joint pipe, the joint pipe comprises inner tube, enclosing cover and interior stopper triplex, through setting up interior stopper in the inner tube, the fixed interior stopper of rethread enclosing cover and inner tube welded fit, with behind the infusion needle puncture interior stopper, interior stopper holds tightly the infusion needle, and behind the infusion needle pull out, interior stopper elastic deformation is in order to fold the puncture hole of infusion needle puncture, realize sealedly, avoid the liquid medicine seepage, in addition, can also set up seal structure on the inner tube, in order to prevent liquid medicine and interior stopper contact.

However, due to the particularities of the medical infusion product, when the infusion needle is pierced, the outer cover needs to be opened firstly to expose the rubber plug, but in the process of opening the outer cover, the outer cover cannot be broken to influence the sealing performance, so that the material requirement on the outer cover is higher, the price is high, the manufacturing cost of the infusion connector is greatly improved, meanwhile, the sealing structure can prevent the liquid medicine from contacting with the inner plug, but the piercing difficulty of the infusion needle is high, the manufacturing cost of the infusion connector is also improved, and along with the continuous development and progress of the technology, part of the inner plug of the material can also contact with the liquid medicine, such as a medicinal butyl rubber plug and a film rubber plug, but the existing infusion connector does not meet the corresponding requirements.

Disclosure of Invention

The utility model provides a hot-pressing through hole type easy-tearing film connector and an infusion bag, which are used for solving the technical problems of high manufacturing cost and high puncture difficulty of the existing infusion bag connector.

According to one aspect of the utility model, there is provided a hot-pressed through-hole type easy-tearing film joint comprising a joint seat and a first joint tube connected with the joint seat, wherein the first joint tube comprises a first communication cavity for communicating an inner cavity of an infusion bag, a first puncture end part communicated with the first communication cavity and an inner plug arranged in the first puncture end part, the first puncture end part comprises a first puncture cavity for accommodating the inner plug, an annular supporting edge which is integrally formed with the first puncture end part and is arranged in the first puncture cavity and is used for supporting the inner plug from the bottom, an outer pressing edge which is integrally formed with the first puncture end part and is bent and arranged for fixing the inner plug through hot-pressing bending and an outer easy-tearing film attached to the upper end surface of the outer pressing edge and used for sealing the top of the first puncture cavity, and the inner side wall of the annular supporting edge is combined to form a communication port communicated with the first puncture cavity and the first communication cavity respectively, so that the first communication cavity is directly communicated with the inner plug.

As a further improvement of the above technical scheme:

further, the radial support length of the annular support edge ranges from 1/5 to 3/5 of the inner diameter of the first puncture cavity.

Further, the upper end face of the annular supporting edge is abutted against and attached to the lower end face of the inner plug, and the lower end face of the outer pressing edge is abutted against and attached to the upper end face of the inner plug.

Further, a hot pressing groove which is used for facilitating the fixed length and the bending forming during the hot pressing of the outer pressing edge is concavely arranged between the outer pressing edge and the first puncture end part.

Further, the first joint pipe comprises two first puncture end parts which are distributed at intervals along the radial direction, the two first puncture end parts share the same first joint pipe, the inner plugs and the first puncture end parts are distributed in one-to-one correspondence, and the first communication cavities of the first joint pipes are respectively and directly communicated with the inner plugs of the two first puncture end parts.

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

Further, the first joint pipe still includes second puncture tip, and second puncture tip and first puncture tip are laid along the radial direction interval of first joint pipe, and second puncture tip and first puncture tip share same first joint pipe, and second puncture tip is including being used for with the sealed second puncture chamber of infusion needle interference fit, with second puncture tip integrated into one piece and lay in the second puncture intracavity be used for separating the puncture position of first communicating chamber and second puncture chamber in order to seal the bottom of second puncture chamber and be attached to the second easy dyestripping of the top of second puncture chamber on the up end of second puncture tip.

Further, the connector further comprises a second connector tube connected with the connector seat, the second connector tube and the first connector tube are distributed at intervals along the length direction of the connector seat, the second connector tube comprises a second communication cavity and a second puncture end part, the second communication cavity is used for communicating an inner cavity of the infusion bag, the second puncture end part comprises a second puncture cavity, the second puncture cavity is used for being in interference fit with an infusion needle, the second puncture end part is integrally formed with the second puncture end part and distributed in the second puncture cavity, and the second puncture part is used for separating the second communication cavity and the second puncture cavity to seal the bottom of the second puncture cavity, and a second easily-torn film is attached to the upper end face of the second puncture end part and used for sealing the top of the second puncture cavity.

Further, the connector also comprises a third connector tube connected with the connector seat, the third connector tube comprises a connecting end used for connecting the cover body, and the connecting end comprises a conical opening with a conical section and a connecting edge formed by extending outwards in the radial direction.

According to another aspect of the utility model, there is also provided an infusion bag comprising the hot-pressed through-hole type easy-tearing film joint.

The utility model has the following beneficial effects:

the hot-pressing through hole type easy-tearing film connector is formed by integrally molding a connector seat and a first connector pipe by adopting an injection molding process or is fixedly connected by adopting a welding process, the first communicating cavity is communicated with the inner cavity of an infusion bag, and then the first penetrating end part is communicated with the first communicating cavity and accommodates a fixed inner plug so as to realize the infusion of liquid medicine after the infusion needle penetrates the inner plug; the inner plug is contained through the first puncture cavity, the inner wall of the first puncture cavity and the outer wall surface of the inner plug are mutually abutted and sealed, so that the sealing of liquid medicine is realized after the infusion needle punctures, the inner plug is supported from the bottom by the annular supporting edge integrally formed with the first puncture end part in the injection molding process, the structure stability is good, the reliability is high, the situation that the inner plug is brought into the first communication cavity due to the fact that the annular supporting edge is broken under pressure when the infusion needle punctures the inner plug is avoided, the communication port is communicated with the first puncture cavity and the first communication cavity, the first communication cavity is directly communicated with the inner plug, and the infusion needle only needs to puncture the inner plug during puncturing and infusing, so that the puncturing difficulty is low; then support and press fixed plug through outer blank holder, outer blank holder and first puncture tip adopt injection molding process integrated into one piece and first puncture tip axial extension earlier forms into the outer blank holder of buckling during injection molding, rethread hot pressing technology makes outer blank holder buckle towards interior stopper direction, outer blank holder is at the closely knit degree of hot pressing bending process in base member, the outer blank holder of buckling is tight with the parcel in interior stopper surface completely, compact structure, high reliability, can avoid pulling out the infusion needle and take out interior stopper, and then prevent the liquid medicine leakage in the infusion bag, at last weld the cover of first easy tear film on the up end of outer blank holder through welding process, with sealed the top in first puncture chamber, avoid interior stopper and external environment contact to pollute, and the degree of difficulty is opened to first easy tear film, the medical personnel of being convenient for use, the hot pressing through hole type easy tear film joint of this scheme, relative to prior art, fix sealed interior stopper with the place of enclosing cover through outer blank holder and first easy tear film, manufacturing cost is greatly reduced, and easy first film is convenient for, and use is low in the cost of support is used to support the annular plug, can be used to seal the plug in the annular support, or the cost is difficult to be further reduced, the medical staff need to seal the bottom, the medical needle is widely used to seal, and is difficult to use, the medical staff is convenient to use, and is used to seal the plug is difficult to seal.

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 hot-pressed through-hole type easy-to-tear film tab according to embodiment 1 of the present utility model;

FIG. 2 is a cross-sectional view of a hot pressed through-hole type peel-film tab of example 1 of the present utility model;

FIG. 3 is a schematic structural view of a thermal compression through-hole type easy-to-tear film tab according to embodiment 2 of the present utility model;

FIG. 4 is a cross-sectional view of a hot pressed through-hole type peel-film tab of example 2 of the present utility model;

FIG. 5 is a schematic view of the structure of a hot-pressed through-hole type easy-to-tear film tab according to embodiment 3 of the present utility model;

FIG. 6 is a cross-sectional view of a hot pressed through-hole type peel-film tab of example 3 of the present utility model;

FIG. 7 is a schematic view of the structure of a through-hole type thermal compression film tab according to embodiment 4 of the present utility model;

FIG. 8 is a cross-sectional view of a hot pressed through-hole type peel-film tab of example 4 of the present utility model;

FIG. 9 is a schematic view showing the structure of a hot-pressed through-hole type peel-film tab according to embodiment 5 of the present utility model;

FIG. 10 is a cross-sectional view of a hot pressed through-hole type peel-film tab of example 5 of the present utility model;

FIG. 11 is a schematic view showing the structure of a hot-pressed through-hole type peel-film tab according to embodiment 6 of the present utility model;

fig. 12 is a cross-sectional view of a hot pressed through-hole type peel-film tab according to example 6 of the present utility model.

Legend description:

100. a joint seat; 200. a first joint pipe; 210. a first communication chamber; 220. a first piercing end; 221. a first puncture lumen; 222. an annular support edge; 223. an outer pressing edge; 224. a first easy-to-tear film; 230. an inner plug; 240. a second piercing end; 241. a second puncture lumen; 242. a puncture site; 243. a second easy-to-tear film; 300. a second joint pipe; 310. a second communication chamber; 400. a third joint pipe; 410. a connection end; 411. a conical mouth; 412. and connecting edges.

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 hot-pressed through-hole type easy-to-tear film tab according to embodiment 1 of the present utility model; FIG. 2 is a cross-sectional view of a hot pressed through-hole type peel-film tab of example 1 of the present utility model; FIG. 3 is a schematic structural view of a thermal compression through-hole type easy-to-tear film tab according to embodiment 2 of the present utility model; FIG. 4 is a cross-sectional view of a hot pressed through-hole type peel-film tab of example 2 of the present utility model; FIG. 5 is a schematic view of the structure of a hot-pressed through-hole type easy-to-tear film tab according to embodiment 3 of the present utility model; FIG. 6 is a cross-sectional view of a hot pressed through-hole type peel-film tab of example 3 of the present utility model; FIG. 7 is a schematic view of the structure of a through-hole type thermal compression film tab according to embodiment 4 of the present utility model; FIG. 8 is a cross-sectional view of a hot pressed through-hole type peel-film tab of example 4 of the present utility model; FIG. 9 is a schematic view showing the structure of a hot-pressed through-hole type peel-film tab according to embodiment 5 of the present utility model; FIG. 10 is a cross-sectional view of a hot pressed through-hole type peel-film tab of example 5 of the present utility model; FIG. 11 is a schematic view showing the structure of a hot-pressed through-hole type peel-film tab according to embodiment 6 of the present utility model; fig. 12 is a cross-sectional view of a hot pressed through-hole type peel-film tab according to example 6 of the present utility model.

Example 1

As shown in fig. 1 and 2, the hot-pressed through-hole type easy-to-tear film 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, a first piercing end 220 communicating with the first communication cavity 210, and an inner plug 230 disposed within the first piercing end 220, the first piercing end 220 includes a first piercing cavity 221 for accommodating the inner plug 230, an annular supporting edge 222 integrally formed with the first piercing end 220 and disposed within the first piercing cavity 221 for supporting the inner plug 230 from the bottom, an outer pressing edge 223 integrally formed with the first piercing end 220 and disposed by bending for fixing the inner plug 230 by hot-pressing bending to cooperate with the annular supporting edge 222, and a first easy-to-tear film 224 attached to an upper end surface of the outer pressing edge 223 for sealing a top of the first piercing cavity 221, and an inner side wall of the annular supporting edge 222 is enclosed to form a communication port communicating with the first piercing cavity 221 and the first communication cavity 210, respectively, so that the first communication cavity 230 is directly communicated with the inner plug 230. The hot-pressing through hole type easy-tearing film connector is formed by integrally molding a connector base 100 and a first connector tube 200 by adopting an injection molding process or connecting and fixing by adopting a welding process, is communicated with the inner cavity of an infusion bag through a first communication cavity 210, is communicated with the first communication cavity 210 through a first puncture end 220 and accommodates a fixed inner plug 230, so that after the infusion needle punctures the inner plug 230, the infusion of liquid medicine is realized; the inner plug 230 is accommodated through the first puncture cavity 221, the inner wall of the first puncture cavity 221 and the outer wall surface of the inner plug 230 are mutually abutted and sealed, so that the sealing of liquid medicine is realized after the injection needle punctures, the inner plug 230 is supported from the bottom by the annular supporting edge 222 integrally formed with the first puncture end 220 in the injection molding process, the structure stability is good, the reliability is high, the inner plug 230 is prevented from being brought into the first communication cavity 210 due to the fact that the annular supporting edge 222 is broken under pressure when the injection needle punctures the inner plug 230, the communication ports are communicated with the first puncture cavity 221 and the first communication cavity 210, so that the first communication cavity 210 is directly communicated to the inner plug 230, and the inner plug 230 only needs to be punctured when the injection needle punctures and infuses, so that the puncturing difficulty is low; then supports the fixed plug through outer blank 223, outer blank 223 and first puncture tip 220 adopt injection molding process integrated into one piece and first puncture tip 220 axial extension earlier forms into the outer blank 223 of buckling during injection molding, rethread hot pressing technology makes outer blank 223 buckle towards interior stopper 230 direction, outer blank 223 is at the closely knit degree increase of hot pressing bending process base member, the outer blank 223 of buckling shaping pastes tightly and wraps up in interior stopper 230 surface completely, compact structure, the reliability is high, can avoid pulling out infusion needle time with interior stopper 230 take out, and then prevent the liquid medicine leakage in the infusion bag, at last through welding process with first easy tear film 224 welded cover on the up end of outer blank 223, with sealed top of first puncture chamber 221, avoid interior stopper 230 and external environment contact pollution, and first easy tear film 224 opens the degree of difficulty low, the medical personnel of being convenient for use, the hot pressing through hole type easy tear film joint of this scheme, in contrast prior art, through outer blank 223 and first easy tear film 224 mutually support in order to replace the fixed sealed interior stopper 230 of enclosing cover, greatly reduced easy tear film 224, and the manufacturing cost is low in order to replace the sealed interior stopper 230, the cost is convenient for the first easy tear film 224, and the manufacturing cost is low in order to use the cost is convenient for the inner stopper 230 is easy to be used to the cost is easy to the inner stopper 230 or is easy to the inner stopper is easy to the manufacture, and is difficult to use to the inner stopper is easy to be used to seal the bottom to the plug 230 is easy to the bottom to use. It should be understood that the injection molding process, the hot pressing process, and the welding process are all well known to those skilled in the art, and are not repeated here. Alternatively, the connector 100 is arranged in a boat shape and welded to the opening of the infusion bag using a welding process.

In this embodiment, the radial support length of the annular support edge 222 is in the range of 1/5 to 3/5 of the inner diameter of the first puncture chamber 221. Specifically, when the radial supporting length of the annular supporting edge 222 is between 1/5 and 3/5 of the inner diameter of the first puncture cavity 221, the annular supporting edge 222 has enough supporting area to support the inner plug 230, so that the reliability is high, and the infusion needle cannot be blocked by the communication port formed by surrounding, so that the infusion needle is convenient to puncture; when the radial supporting length of the annular supporting edge 222 is less than 1/5 of the inner diameter of the first penetration cavity 221, the supporting area of the annular supporting edge 222 to the inner plug 230 is too small, and even if the annular supporting edge 222 has compressive strength and is not broken in the process of penetration of the infusion needle, the inner plug 230 is also likely to be elastically deformed and brought into the first communication cavity 210 by the infusion needle through the communication port; when the radial support length of the annular support edge 222 is greater than 3/5 of the inner diameter of the first puncture chamber 221, the communication port formed by the enclosing is too small, which may cause the infusion needle to fail to puncture. Optionally, the axial thickness of the annular supporting edge 222 is above 0.8mm, and when the axial thickness of the annular supporting edge 222 is above 0.8mm, the strength is reliable and the fracture is not easy to occur; when the axial thickness of the annular support edge 222 is less than 0.8mm, the annular support edge 222 is low in strength and is easily broken.

In this embodiment, the upper end surface of the annular supporting edge 222 is abutted against and attached to the lower end surface of the inner plug 230, and the lower end surface of the outer pressing edge 223 is abutted against and attached to the upper end surface of the inner plug 230. Specifically, the lower end surface and the upper end surface of the inner plug 230 are respectively pressed against and attached to the upper end surface of the annular supporting edge 222 and the lower end surface of the outer pressing edge 223, so that the sealing performance is enhanced by surface-to-surface attachment sealing while the inner plug 230 is fastened.

In this embodiment, a hot pressing groove for facilitating the fixed length and bending formation of the outer pressing edge 223 during hot pressing is concavely formed between the outer pressing edge 223 and the first piercing end 220. Specifically, through setting up the hot pressing recess for easily buckle when outer blank 223 hot pressing, with the planarization of guaranteeing the up end behind the shaping of outer blank 223 buckling, and then improve the leakproofness after the welding of first easy dyestripping 224, and the length of buckling depends on the setting position of hot pressing recess, makes the size of outer blank 223 relatively fixed, the injection moulding of being convenient for. It should be understood that the thickness of the hot pressing groove matrix is relatively thin and the strength is low, but after hot pressing, local welding and reinforcement are carried out at the hot pressing groove, so that the strength of the hot pressing groove matrix is improved and the strength is reliable.

In this embodiment, the top of the inner plug 230 is concavely provided with a first inner spherical surface. Specifically, the puncture thickness of the infusion needle when puncturing the inner plug 230 is reduced through the first inner spherical surface, so that the puncture difficulty is reduced, and the cutting resistance is reduced.

In this embodiment, the bottom of the inner plug 230 is concavely provided with a second inner spherical surface. Specifically, the second inner spherical surface reduces the puncture thickness of the infusion needle when the inner plug 230 is punctured, so as to reduce the puncture difficulty and reduce the cutting resistance.

In this embodiment, the thickness of the outer crimp 223 is in the range of 1.0-2.0mm. Specifically, when the thickness of the outer pressing edge 223 is between 1.0mm and 2.0mm, the strength of the outer pressing edge 223 is proper, and the outer pressing edge 223 is easy to bend and form during hot pressing; when the thickness of the outer pressing edge 223 is less than 1.0mm, the strength of the outer pressing edge 223 cannot be ensured, the outer pressing edge is easy to break in the hot pressing bending process, and the bending difficulty is high; when the thickness of the outer crimp 223 is greater than 2.0mm, the inner stress of the outer crimp 223 when bending is excessive, is easily broken at the bending position, and has great bending difficulty.

Example 2

As shown in fig. 3 and 4, this embodiment differs from embodiment 1 in that: the first joint pipe 200 includes two first piercing end portions 220 arranged at intervals along the radial direction, the two first piercing end portions 220 share the same first joint pipe 200, the inner plugs 230 and the first piercing end portions 220 are arranged in one-to-one correspondence, and the first communication cavities 210 of the first joint pipe 200 are respectively and directly communicated with the inner plugs 230 of the two first piercing end portions 220. Specifically, the two first puncture ends 220 are used for dispensing and transfusion respectively, so that pollution risks caused by repeated puncture of one inner plug 230 when one first puncture end 220 is used for dispensing and transfusion are avoided. Optionally, the radius of the inner plugs 230 in the two first piercing ends 220 is different, the small inner plug 230 in the first piercing end 220 is used for dispensing, the large inner plug 230 in the first piercing end 220 is used for infusion, and the medical staff can conveniently distinguish the two inner plugs 230. Optionally, the inner plugs 230 in the two first piercing ends 220 are each of a different color for ease of use by a healthcare worker. Optionally, 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 230 by a medical professional.

Example 3

As shown in fig. 5 and 6, this embodiment differs from embodiment 1 in that: the joint includes two first joint pipes 200 arranged at intervals along the length direction of the joint base 100. Specifically, the two first connector pipes 200 are arranged on the same connector base 100, and the two first connector pipes 200 are used for respectively dispensing and transfusion, so that the pollution risk caused by repeated puncture of one inner plug 230 when one first connector pipe 200 is used for dispensing and transfusion is avoided. Optionally, the radius of the inner plugs 230 in the two first connector tubes 200 is different, wherein the inner plug 230 with the small radius is used for dispensing medicine, the inner plug 230 with the large radius is used for transfusion, and the medical staff can conveniently distinguish the two inner plugs 230. Optionally, the inner plugs 230 in the two first connector tubes 200 are respectively different in color, so that the medical staff can distinguish the two first connector tubes. Optionally, 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 230 by a medical professional. Optionally, the two first joint pipes 200 have different pipe diameters, the first joint pipe 200 with smaller pipe diameter is used for dispensing, the first joint pipe 200 with larger pipe diameter is used for transfusion, and the medical staff can conveniently distinguish and use.

Example 4

As shown in fig. 7 and 8, this embodiment differs from embodiment 1 in that: the first connector tube 200 further comprises a second piercing end 240, the second piercing end 240 and the first piercing end 220 are arranged at intervals along the radial direction of the first connector tube 200, the second piercing end 240 and the first piercing end 220 share the same first connector tube 200, the second piercing end 240 comprises a second piercing cavity 241 for interference fit sealing with an infusion needle, a piercing part 242 which is integrally formed with the second piercing end 240 and arranged in the second piercing cavity 241 and is used for separating the first communicating cavity 210 and the second piercing cavity 241 so as to seal the bottom of the second piercing cavity 241, and a second tearable membrane 243 which is attached to the upper end face of the second piercing end 240 and is used for sealing the top of the second piercing cavity 241. Specifically, the first puncture tip 220 is used for dispensing, the second puncture tip 240 is used for infusing, the puncture direction to the infusion needle is realized through the second puncture cavity 241, and the internal diameter of the second puncture cavity 241 is in interference fit with the external diameter of the infusion needle, so that sealing after puncture is realized, the bottom of the second puncture cavity 241 is sealed through the puncture part 242, and the puncture part 242 and the second puncture tip 240 are integrally formed, sealing performance is good, liquid medicine leakage is avoided, the top of the second puncture cavity 241 is sealed through the second easy-tearing film 243, and pollution caused by contact of the second puncture cavity 241 with the external environment is avoided. It should be appreciated that the inner plug 230 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 by means of the second lancing cavity 241 being in interference fit with the infusion needle, so as to provide for a post-lancing seal without the use of the inner plug 230, which greatly reduces the manufacturing costs of the connector. Optionally, the first easy-to-tear film 224 and the second easy-to-tear film 243 are the same film that is connected, and an easy-to-break mark is provided between the first easy-to-tear film 224 and the second easy-to-tear film 243. Alternatively, in another embodiment, the first tearable membrane 224 and the second tearable membrane 243 are separate membranes arranged at a distance from each other.

In this embodiment, the thickness of the puncture site 242 is in the range of 0.30mm to 0.50mm. Specifically, when the thickness of the puncture part 242 is between 0.30mm and 0.50mm, the puncture part 242 has proper strength and low puncture difficulty; when the thickness of the puncture part 242 is less than 0.30mm, the puncture part is easy to burn through in the injection molding process and cannot be used; when the thickness of the puncture site 242 is greater than 0.50mm, the strength of the puncture site 242 is too high and the puncture difficulty is too high. Preferably, the thickness of the puncture site 242 is 0.40mm, and the overall performance is optimal when the thickness of the puncture site 242 is 0.40 mm.

Example 5

As shown in fig. 9 and 10, this embodiment differs from embodiment 1 in that: the connector further comprises a second connector tube 300 connected with the connector base 100, the second connector tube 300 and the first connector tube 200 are distributed at intervals along the length direction of the connector base 100, the second connector tube 300 comprises a second communication cavity 310 and a second puncture end 240, the second communication cavity 310 is used for communicating an inner cavity of an infusion bag, the second puncture end 240 comprises a second puncture cavity 241 used for being sealed by interference fit with an infusion needle, a puncture part 242 which is integrally formed with the second puncture end 240 and distributed in the second puncture cavity 241 and is used for separating the second communication cavity 310 and the second puncture cavity 241 so as to seal the bottom of the second puncture cavity 241, and a second easily-torn film 243 attached to the upper end face of the second puncture end 240 and used for sealing the top of the second puncture cavity 241. Specifically, the first connector tube 200 is used for dispensing, the second connector tube 300 is used for infusing, the second connector tube 300 is communicated with the inner cavity of the infusion bag through the second communicating cavity 310, the infusion needle is convenient to puncture through the second puncture end 240 so as to realize infusion needle puncture infusion, puncture guiding of the infusion needle is realized through the second puncture cavity 241, the inner diameter of the second puncture cavity 241 is in interference fit with the outer diameter of the infusion needle so as to realize sealing after puncture, the second communicating cavity 310 is separated through the puncture part 242 so as to seal the bottom of the second puncture cavity 241, the puncture part 242 and the second puncture end 240 are integrally formed, sealing performance is good, liquid medicine leakage is avoided, the top of the second puncture cavity 241 is sealed through the second easy-tearing film 243, and pollution caused by contact of the second puncture cavity 241 with the external environment is avoided. It should be appreciated that the inner plug 230 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 by means of the second lancing cavity 241 being in interference fit with the infusion needle, so as to provide for a post-lancing seal without the use of the inner plug 230, which greatly reduces the manufacturing costs of the connector. Optionally, the outer diameter of the first connector tube 200 is smaller than the outer diameter of the second connector tube 300 to facilitate ease of use by healthcare workers. Optionally, the first connector tube 200 and/or the second connector tube 300 are injection molded from a clear material to facilitate direct viewing by a healthcare worker of the presence of the inner plug 230. Optionally, the first easy-to-tear film 224 and the second easy-to-tear film 243 are the same film that is connected, and an easy-to-break mark is provided between the first easy-to-tear film 224 and the second easy-to-tear film 243. Alternatively, in another embodiment, the first tearable membrane 224 and the second tearable membrane 243 are separate membranes arranged at a distance from each other.

In this embodiment, the thickness of the puncture site 242 is in the range of 0.30mm to 0.50mm. Specifically, when the thickness of the puncture part 242 is between 0.30mm and 0.50mm, the puncture part 242 has proper strength and low puncture difficulty; when the thickness of the puncture part 242 is less than 0.30mm, the puncture part is easy to burn through in the injection molding process and cannot be used; when the thickness of the puncture site 242 is greater than 0.50mm, the strength of the puncture site 242 is too high and the puncture difficulty is too high. Preferably, the thickness of the puncture site 242 is 0.40mm, and the overall performance is optimal when the thickness of the puncture site 242 is 0.40 mm.

Example 6

As shown in fig. 11 and 12, this embodiment differs from embodiment 1 in that: in this embodiment, the joint further includes a third joint pipe 400 connected to the joint base 100, where the third joint pipe 400 includes a connection end 410 for connecting to a cover, and the connection end 410 includes a tapered opening 411 having a tapered radial cross-section and a connection edge 412 extending radially outward. 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 connected with the cover body through the connecting end 410 so as to realize sealing of the third connector tube 400, the cover body is connected with the connecting edge 412 so as to be matched with the cover bodies with different sizes, and the cover bodies with different radial sizes are communicated with each other through the conical opening 411 to ensure that the infusion needle is stably pierced. 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 embodiment comprises the hot-pressing through hole type easy-tearing film connector in any embodiment. Specifically, through adopting the opening of hot pressing through-hole formula easy tear film joint sealed infusion bag to greatly reduced 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. The utility model provides a hot pressing through-hole type easily tears membrane and connects, including connector base (100) and first joint pipe (200) of being connected with connector base (100), first joint pipe (200) are including first intercommunication chamber (210) that are used for the intercommunication infusion bag inner chamber, first puncture tip (220) and the interior stopper (230) of laying in first puncture tip (220) of intercommunication with first intercommunication chamber (210), characterized in that, first puncture tip (220) are including first puncture chamber (221) that are used for holding interior stopper (230), with first puncture tip (220) integrated into one piece and lay in first puncture chamber (221) be used for supporting interior stopper (230) from the bottom, with first puncture tip (220) integrated into one piece and buckle and lay be used for through buckle forming with the outer pressure limit (223) of fixed interior stopper (230) of cooperation of annular support limit (222) and be attached to first easy membrane (224) of sealing first puncture chamber (221) top on the up end, annular support limit (222) form with first intercommunication chamber (210) respectively, annular support limit (222) and first intercommunication chamber (210) are formed with first intercommunication chamber (210) directly.

2. The hot-pressed through-hole type easy-tearing film joint according to claim 1, wherein the radial supporting length of the annular supporting edge (222) ranges from 1/5 to 3/5 of the inner diameter of the first puncture cavity (221).

3. The hot-pressed through-hole type easy-to-tear film joint according to claim 1, wherein an upper end surface of the annular supporting edge (222) is abutted against and bonded with a lower end surface of the inner plug (230), and a lower end surface of the outer pressing edge (223) is abutted against and bonded with an upper end surface of the inner plug (230).

4. The hot-pressed through-hole type easy-to-tear film joint according to claim 1, wherein a hot-pressing groove for facilitating the fixed length and bending formation of the outer pressing edge (223) during hot-pressing is concavely provided between the outer pressing edge (223) and the first piercing end portion (220).

5. The hot-pressed through-hole type easy-to-tear film joint according to any one of claims 1 to 4, wherein the first joint pipe (200) includes two first piercing end portions (220) arranged at intervals in a radial direction, the two first piercing end portions (220) share the same first joint pipe (200), the inner plugs (230) and the first piercing end portions (220) are arranged in one-to-one correspondence, and the first communicating chambers (210) of the first joint pipe (200) are respectively directly communicated to the inner plugs (230) of the two first piercing end portions (220).

6. The hot-pressed through-hole type easy-to-tear film tab according to any one of claims 1 to 4, characterized in that the tab comprises two first tab tubes (200) arranged at intervals along the length direction of the tab base (100).

7. The thermocompression bonding through-hole type easy-to-tear film joint according to any one of claims 1 to 4, wherein the first joint tube (200) further comprises a second piercing end portion (240), the second piercing end portion (240) and the first piercing end portion (220) are arranged at intervals along the radial direction of the first joint tube (200), and the second piercing end portion (240) and the first piercing end portion (220) share the same first joint tube (200), the second piercing end portion (240) comprises a second piercing cavity (241) for interference fit sealing with an infusion needle, a piercing site (242) integrally formed with the second piercing end portion (240) and arranged in the second piercing cavity (241) for separating the first communicating cavity (210) and the second piercing cavity (241) to seal the bottom of the second piercing cavity (241), and a second easy-to-tear film (243) attached to the upper end surface of the second piercing end portion (240) for sealing the top of the second piercing cavity (241).

8. The thermocompression bonding through-hole type easy-to-tear film joint according to any one of claims 1 to 4, further comprising a second joint tube (300) connected to the joint base (100), the second joint tube (300) and the first joint tube (200) being arranged at intervals along the length direction of the joint base (100), the second joint tube (300) comprising a second communicating chamber (310) for communicating with the inner cavity of the infusion bag and a second piercing end (240), the second piercing end (240) comprising a second piercing chamber (241) for sealing with an infusion needle by interference fit, a second easy-to-tear film (242) integrally formed with the second piercing end (240) and arranged in the second piercing chamber (241) for separating the second communicating chamber (310) and the second piercing chamber (241) to seal the bottom of the second piercing chamber (241), and a top part for sealing the second piercing chamber (243) attached to the upper end face of the second piercing end (240).

9. The hot-pressed through-hole type easy-to-tear film tab according to any one of claims 1 to 4, further comprising a third tab tube (400) connected to the tab base (100), the third tab tube (400) comprising a connection end (410) for connecting to the lid body, the connection end (410) comprising a tapered mouth (411) arranged in a tapered shape in a radial section and a connection edge (412) formed to extend radially outward.

10. An infusion bag comprising the hot-pressed through-hole type easy-tearing film joint as claimed in any one of claims 1 to 9.