CN219721313U - Inner clamping hole type joint and infusion bag - Google Patents

Abstract

The utility model discloses an internal clamping closed-hole type connector which comprises a connector base and a first connector tube connected with the connector base, wherein the first connector tube comprises a first communication cavity for communicating an inner cavity of an infusion bag, a first installation end part communicated with the first communication cavity and an internal plug arranged in the first installation end part, the first installation end part comprises a first installation cavity for installing the internal plug, a first external sealing part for sealing the top of the first installation cavity is integrally formed at the top of the first installation end part, an internal clamping table for pressing and fixing the internal plug is clamped on the side wall of the first installation cavity, and the middle part of the internal clamping table comprises an internal sealing part for sealing the bottom of the first installation cavity. In addition, the utility model also discloses an infusion bag comprising the inner clamping hole type connector.

Description

Inner clamping hole type joint and infusion bag

Technical Field

The utility model relates to the technical field of infusion connectors, in particular to an internal clamping closed-hole connector. In addition, the utility model also relates to an infusion bag comprising the inner clamping hole type connector.

Background

The opening of infusion bag adopts the infusion to connect the sealed usually, and the infusion connects by the sealed infusion bag's of joint seat opening of joint seat and connects the pipe to carry out puncture direction by the pipe to infusion needle, and the infusion bag is usually used upside down to utilize gravity to order about the natural infusion of liquid medicine, consequently, in order to prevent that the liquid medicine from leaking, be provided with the inner plug in the pipe of joint, with holding tightly the infusion needle after the infusion needle punctures, realize the sealed after the infusion needle punctures to after extracting the infusion needle, the puncture hole that the puncture of inner plug infusion needle formed is quick-operation complex under the elastic action, realizes the sealed after the infusion needle pulls out.

However, the existing joint pipe mainly comprises an inner pipe body, an outer cover body and an inner plug, and the outer cover body is welded on the inner pipe body to fixedly seal the inner plug, so that the following disadvantages exist in the combined structure: 1. in order to ensure tightness, the requirement on the assembly precision of the welding between the inner pipe body and the outer cover body is high, the structure of the inner pipe body and the outer cover body is complex, the injection molding processing difficulty is high, the processing precision of the mutual matching is large in control difficulty, and the assembly precision between the inner pipe body and the outer cover body which are manufactured and obtained easily cannot meet the requirement. 2. The inner sealing part of the inner pipe body is formed together with the injection molding process of the inner pipe body, and the inner sealing part can obstruct the puncture of the infusion needle, so that the thickness precision requirement of the puncture part on the inner sealing part is high, if the thickness is large, the infusion needle is difficult to puncture, if the thickness is small, the injection molding process is easy to burn through, and in the injection molding process of the inner pipe body, the thickness of the puncture part needs to be accurately controlled, and the injection molding processing difficulty is large.

Disclosure of Invention

The utility model provides an inner clamping hole type connector and an infusion bag, which are used for solving the technical problems of high assembly precision requirement and high injection molding processing difficulty of the infusion connector on the existing infusion bag.

According to one aspect of the utility model, there is provided an internally clamped closed-hole connector comprising a connector base and a first connector tube connected with the connector base, wherein the first connector tube comprises a first communication cavity for communicating an inner cavity of an infusion bag, a first mounting end part which is communicated with the first communication cavity and is integrally formed with the first connector tube, and an inner plug which is arranged in the first mounting end part, the first mounting end part comprises a first mounting cavity for mounting the inner plug, a first outer sealing part for sealing the top of the first mounting cavity is integrally formed at the top of the first mounting end part, an inner clamping table for pressing and fixing the inner plug is clamped on the side wall of the first mounting cavity, and the middle part of the inner clamping table comprises an inner sealing part for sealing the bottom of the first mounting cavity.

As a further improvement of the above technical scheme:

further, the inner clamping table further comprises an inner clamping ring which is connected with the inner side wall of the first installation cavity in a clamping manner and used for propping against the fixed inner plug, the inner side wall of the inner clamping ring is enclosed to form a sinking cavity communicated with the first installation cavity, the bottom of the inner clamping ring is integrally formed with the inner sealing part, and the inner sealing part is used for sealing the bottom of the sinking cavity.

Further, the outer side wall of the inner clamping ring comprises an arc-shaped protrusion formed by axially downwards and radially outwards obliquely extending, the side wall of the first mounting cavity comprises an arc-shaped groove formed by axially downwards and radially outwards concavely forming, the arc-shaped protrusion is clamped and connected with the arc-shaped groove, and the lower end face of the arc-shaped protrusion is horizontally abutted with the lower end part of the arc-shaped groove.

Further, the first outer seal is a frangible cap or tab.

Further, the first joint pipe comprises two first installation end parts, the two first installation end parts are distributed at intervals along the radial direction of the first joint pipe and are communicated with the same first communication cavity, and the first installation end parts and the inner plugs are distributed in one-to-one correspondence.

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 connector tube further comprises a second mounting end portion, the first mounting end portion and the second mounting end portion are arranged at intervals along the radial direction of the first connector tube and are communicated with the same first communication cavity, the second mounting end portion comprises a second mounting cavity which is used for being in sealing connection with the infusion needle, and a second outer sealing portion which is used for sealing the top of the second mounting cavity is integrally formed at the top of the second mounting end portion.

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, and the second joint pipe is including the second intercommunication chamber that is used for the inner chamber of intercommunication infusion bag and with the third installation tip of second intercommunication chamber intercommunication, third installation tip including be used for with infusion needle sealing connection's third installation chamber, the top integrated into one piece of third installation tip has the third outer seal portion that is used for sealing the top of third installation chamber.

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 above-described internally clamped closed cell connector.

The utility model has the following beneficial effects:

according to the inner clamping closed-pore type connector, the connector seat is obtained through injection molding by adopting an injection molding process, the first connector pipe is molded together in the injection molding process of the connector seat, or is welded and fixed with the connector seat after being molded independently, the inner plug is plugged into the first mounting cavity of the first mounting end part along the first communication cavity, the first outer sealing part is molded together in the injection molding process of the first connector pipe, so that the sealing of the top of the first mounting cavity is realized, the structure stability is good, the sealing performance is good, the inner plug is effectively prevented from being polluted due to contact with the external environment, the inner clamping table is clamped into the first mounting cavity along the first communication cavity, the inner plug is pressed and fixed in order to enable the inner plug to be reliably mounted, the inner plug is prevented from being brought into an infusion bag in the puncture process of an infusion needle, the top of the first mounting cavity is sealed through the inner sealing part, the inner clamping type connector is effectively prevented from being contacted with liquid medicine, the inner clamping type connector is integrally molded after the inner plug is plugged into the first connector pipe by adopting the injection molding process, the inner clamping table is pressed and fixed and sealed, and the inner plug is prevented from being polluted due to the fact, compared with the inner clamping table, the inner clamping ring is prevented from being contacted with the existing shape, the inner clamping ring is low in the practical precision, the inner clamping type connector is easy to be widely controlled, and the inner clamping precision is required to be widely, and the inner clamping technology is low in the precision is required to be manufactured, and is low in the technology and is suitable to be used and used to be used to and with a clamp.

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 view of the structure of an inside-clamping closed-cell joint according to embodiment 1 of the present utility model;

FIG. 2 is a cross-sectional view of the female blind bore joint of FIG. 1;

FIG. 3 is a cross-sectional view of the female blind bore joint of FIG. 1;

FIG. 4 is a schematic view of the structure of the inside-clamping closed-cell joint of embodiment 1 of the present utility model;

FIG. 5 is a cross-sectional view of the inner snap-in bore fitting of FIG. 4;

FIG. 6 is a cross-sectional view of the inner snap-in bore fitting of FIG. 4;

FIG. 7 is a schematic view of the structure of the inside-clamping closed-cell joint of embodiment 1 of the present utility model;

FIG. 8 is a cross-sectional view of the inside snap closed cell fitting of FIG. 7;

FIG. 9 is a cross-sectional view of the inside snap closed cell fitting of FIG. 7;

FIG. 10 is a schematic view of the structure of the inside-clamping closed-cell joint of embodiment 1 of the present utility model;

FIG. 11 is a cross-sectional view of the inside snap closed cell fitting of FIG. 10;

FIG. 12 is a cross-sectional view of the inside snap closed cell fitting of FIG. 10;

FIG. 13 is a schematic view of the structure of the inside-clamping closed-cell joint of embodiment 1 of the present utility model;

FIG. 14 is a cross-sectional view of the inside snap closed cell fitting of FIG. 13;

FIG. 15 is a cross-sectional view of the inside snap closed cell fitting of FIG. 13;

FIG. 16 is a schematic view showing the structure of an inside-clamping closed-cell joint according to embodiment 1 of the present utility model;

FIG. 17 is a cross-sectional view of the inner snap-in bore fitting of FIG. 16;

FIG. 18 is a cross-sectional view of the inner snap-in bore fitting of FIG. 16;

FIG. 19 is a schematic view showing the structure of an inner snap closed cell joint according to embodiment 1 of the present utility model;

FIG. 20 is a cross-sectional view of the inside snap closed cell fitting of FIG. 19;

FIG. 21 is a cross-sectional view of the inside snap closed cell fitting of FIG. 19;

FIG. 22 is a schematic view showing the structure of an inside-clamping closed-cell joint according to embodiment 1 of the present utility model;

FIG. 23 is a cross-sectional view of the inside snap closed cell fitting of FIG. 22;

FIG. 24 is a cross-sectional view of the inside snap closed cell fitting of FIG. 22;

FIG. 25 is a schematic view showing the structure of an inner snap closed cell joint according to embodiment 1 of the present utility model;

FIG. 26 is a cross-sectional view of the inside snap closed cell fitting of FIG. 25;

FIG. 27 is a cross-sectional view of the inside snap closed cell fitting of FIG. 25;

FIG. 28 is a schematic view showing the structure of an inside-clamping closed-cell joint according to embodiment 1 of the present utility model;

FIG. 29 is a cross-sectional view of the inside snap closed cell fitting of FIG. 28;

FIG. 30 is a cross-sectional view of the female blind bore connector of FIG. 28;

FIG. 31 is a schematic view showing the structure of an inner snap closed cell joint according to embodiment 1 of the present utility model;

FIG. 32 is a cross-sectional view of the female blind bore connector of FIG. 31;

FIG. 33 is a cross-sectional view of the inside snap closed cell fitting of FIG. 31;

FIG. 34 is a schematic view showing the structure of an inside-clamping closed-cell joint according to embodiment 1 of the present utility model;

FIG. 35 is a cross-sectional view of the inside snap closed cell fitting of FIG. 34;

fig. 36 is a cross-sectional view of the inside snap closed cell connector of fig. 34.

Legend description:

100. a joint seat; 200. a first joint pipe; 210. a first communication chamber; 220. a first mounting end; 221. a first mounting cavity; 222. a first outer seal; 230. an inner plug; 240. an inner clamping table; 241. an inner seal portion; 242. an inner snap ring; 243. a sinking cavity; 244. arc-shaped bulges; 250. a second mounting end; 251. a second mounting cavity; 252. a second outer seal portion; 300. a second joint pipe; 310. a second communication chamber; 320. a third mounting end; 321. a third mounting cavity; 322. a third outer seal; 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 view of the structure of an inside-clamping closed-cell joint according to embodiment 1 of the present utility model; FIG. 2 is a cross-sectional view of the female blind bore joint of FIG. 1; FIG. 3 is a cross-sectional view of the female blind bore joint of FIG. 1; FIG. 4 is a schematic view of the structure of the inside-clamping closed-cell joint of embodiment 1 of the present utility model; FIG. 5 is a cross-sectional view of the inner snap-in bore fitting of FIG. 4; FIG. 6 is a cross-sectional view of the inner snap-in bore fitting of FIG. 4; FIG. 7 is a schematic view of the structure of the inside-clamping closed-cell joint of embodiment 1 of the present utility model; FIG. 8 is a cross-sectional view of the inside snap closed cell fitting of FIG. 7; FIG. 9 is a cross-sectional view of the inside snap closed cell fitting of FIG. 7; FIG. 10 is a schematic view of the structure of the inside-clamping closed-cell joint of embodiment 1 of the present utility model; FIG. 11 is a cross-sectional view of the inside snap closed cell fitting of FIG. 10; FIG. 12 is a cross-sectional view of the inside snap closed cell fitting of FIG. 10; FIG. 13 is a schematic view of the structure of the inside-clamping closed-cell joint of embodiment 1 of the present utility model; FIG. 14 is a cross-sectional view of the inside snap closed cell fitting of FIG. 13; FIG. 15 is a cross-sectional view of the inside snap closed cell fitting of FIG. 13; FIG. 16 is a schematic view showing the structure of an inside-clamping closed-cell joint according to embodiment 1 of the present utility model; FIG. 17 is a cross-sectional view of the inner snap-in bore fitting of FIG. 16; FIG. 18 is a cross-sectional view of the inner snap-in bore fitting of FIG. 16; FIG. 19 is a schematic view showing the structure of an inner snap closed cell joint according to embodiment 1 of the present utility model; FIG. 20 is a cross-sectional view of the inside snap closed cell fitting of FIG. 19; FIG. 21 is a cross-sectional view of the inside snap closed cell fitting of FIG. 19; FIG. 22 is a schematic view showing the structure of an inside-clamping closed-cell joint according to embodiment 1 of the present utility model; FIG. 23 is a cross-sectional view of the inside snap closed cell fitting of FIG. 22; FIG. 24 is a cross-sectional view of the inside snap closed cell fitting of FIG. 22; FIG. 25 is a schematic view showing the structure of an inner snap closed cell joint according to embodiment 1 of the present utility model; FIG. 26 is a cross-sectional view of the inside snap closed cell fitting of FIG. 25; FIG. 27 is a cross-sectional view of the inside snap closed cell fitting of FIG. 25; FIG. 28 is a schematic view showing the structure of an inside-clamping closed-cell joint according to embodiment 1 of the present utility model; FIG. 29 is a cross-sectional view of the inside snap closed cell fitting of FIG. 28; FIG. 30 is a cross-sectional view of the female blind bore connector of FIG. 28; FIG. 31 is a schematic view showing the structure of an inner snap closed cell joint according to embodiment 1 of the present utility model; FIG. 32 is a cross-sectional view of the female blind bore connector of FIG. 31; FIG. 33 is a cross-sectional view of the inside snap closed cell fitting of FIG. 31; FIG. 34 is a schematic view showing the structure of an inside-clamping closed-cell joint according to embodiment 1 of the present utility model; FIG. 35 is a cross-sectional view of the inside snap closed cell fitting of FIG. 34; fig. 36 is a cross-sectional view of the inside snap closed cell connector of fig. 34.

Example 1

As shown in fig. 1 to 6, the inner locking hole type connector of the present embodiment includes a connector holder 100 and a first connector tube 200 connected to the connector holder 100, the first connector tube 200 includes a first communication chamber 210 for communicating with an inner cavity of an infusion bag, a first mounting end 220 integrally formed with the first communication chamber 210 and the first connector tube 200, and an inner plug 230 disposed in the first mounting end 220, the first mounting end 220 includes a first mounting chamber 221 for mounting the inner plug 230, a first outer sealing portion 222 for sealing a top portion of the first mounting chamber 221 is integrally formed at a top portion of the first mounting end 220, an inner locking portion 240 for pressing and fixing the inner plug 230 is locked to a side wall of the first mounting chamber 221, and a middle portion of the inner locking portion 240 includes an inner sealing portion 241 for sealing a bottom portion of the first mounting chamber 221. Specifically, the inner clamping hole type connector of the utility model is characterized in that the connector base 100 is obtained by injection molding through an injection molding process, the first connector pipe 200 is molded together in the injection molding process of the connector base 100, or is welded and fixed with the connector base 100 after being molded singly, the inner plug 230 is plugged into the first mounting cavity 221 of the first mounting end 220 along the first communication cavity 210, the first outer sealing part 222 is molded together in the injection molding process of the first connector pipe 200, so as to realize the sealing of the top of the first mounting cavity 221, the structural stability is good, the sealing performance is good, the inner plug 230 is effectively prevented from being polluted by contacting with the external environment, the inner clamping table 240 is clamped into the first mounting cavity 221 along the first communication cavity 210 to press and fix the inner plug 230, the inner plug 230 is reliably installed, the inner plug 230 is prevented from being brought into an infusion bag in the process of puncturing an infusion needle, the top of the first installation cavity 221 is sealed through the inner sealing part 241, the inner plug 230 is effectively prevented from being contacted with liquid medicine, the inner clamping closed-pore type connector in the scheme is characterized in that the first connector pipe 200 is integrally formed by adopting an injection molding process, after the inner plug 230 is plugged into the first connector pipe 200, the inner plug 230 is fixed in a propping mode and sealed through the inner clamping table 240, and compared with the prior art, the shape of the inner clamping ring 242 is regular, the inner sealing part 241 is arranged on the inner clamping ring 242, the thickness precision control difficulty is low, the injection molding processing difficulty is greatly reduced, the assembly precision requirement for clamping the first connector pipe 200 is low, the practicability is high, and the inner plug 230 is suitable for being widely popularized and applied. It should be appreciated that the injection molding process is well known to those skilled in the art and will not be described in detail herein. Optionally, the inner diameter of the first communication cavity 210 is larger than the inner diameter of the first mounting cavity 221 so as to be snapped into the inner clip 240.

In this embodiment, the inner clamping table 240 further includes an inner clamping ring 242 clamped with the side wall of the first mounting cavity 221 for pressing and fixing the inner plug 230, the inner side wall of the inner clamping ring 242 encloses to form a sinking cavity 243 communicated with the first mounting cavity 221, the bottom of the inner clamping ring 242 and the inner sealing portion 241 are integrally formed, and the inner sealing portion 241 is used for sealing the bottom of the sinking cavity 243. Specifically, the inner sealing portion 241 seals the bottom of the sinking cavity 243 to prevent the liquid medicine from contacting the inner plug 230, and the sinking cavity 243 increases the distance between the inner plug 230 and the inner sealing portion 241, so that after the infusion needle pierces the inner plug 230, the needle pierces the inner sealing portion 241 again under the condition that the needle is completely separated from the inner plug 230, so as to reduce the cutting resistance, eliminate or stop the probability of cutting scraps to the greatest extent, and isolate the cutting scraps in the sinking cavity 243 even if the cutting scraps are generated, thereby avoiding insoluble particles in the cutting scraps from falling into the liquid medicine. Alternatively, in another embodiment, as shown in FIG. 2, the top of the inner collar 242 is integrally formed with the inner seal 241.

In this embodiment, the outer side wall of the inner snap ring 242 includes an arc-shaped protrusion 244 that extends obliquely outwards in the axial direction and outwards in the radial direction, and the inner side wall of the first mounting cavity 221 includes an arc-shaped groove that is recessed outwards in the axial direction and downwards in the radial direction, and the arc-shaped protrusion 244 is clamped and connected with the arc-shaped groove, and the lower end surface of the arc-shaped protrusion 244 is horizontally abutted with the lower end part of the arc-shaped groove. Specifically, during assembly, the inner clamping table 240 is pressed into the first mounting cavity 221 upwards along the axial direction until the arc-shaped protrusion 244 is clamped into the arc-shaped groove on the inner wall of the first mounting cavity 221, at this time, the lower end surface of the arc-shaped protrusion 244 horizontally abuts against the lower end surface of the arc-shaped groove to press and fix the inner plug 230, so as to prevent the inner plug 230 from moving downwards along the axial direction.

In this embodiment, the axial thickness of the inner snap ring 242 is in the range of 1.5mm-2.5mm. Specifically, when the axial thickness of inner snap ring 242 is between 1.5mm and 2.5mm, inner snap ring 242 has sufficient axial dimension to form arcuate projections 244, so that the strength of arcuate projections 244 is reliable, while the raw material cost for manufacturing inner snap ring 242 is appropriate; when the axial thickness of the inner clamping ring 242 is smaller than 1.5mm, the strength of the arc-shaped protrusion 244 on the inner clamping ring 242 is too low, and the inner clamping ring is easy to break; when the axial thickness of the inner snap ring 242 is greater than 2.5mm, the raw material cost for manufacturing the inner snap ring 242 is too high, which is not beneficial to large-scale mass production. It will be appreciated that infusion connectors are widely used in the medical field and require significant amounts of manufacturing costs, even if they are increased to a small extent, and in the case of large bases, they can result in significant increases.

In this embodiment, the thickness of the inner sealing portion 241 is 0.20mm-0.40mm. It should be appreciated that since the inner seal portion 241 is injection molded together with the inner clip 240 having a regular shape, a higher machining accuracy can be selected for machining. Specifically, when the thickness of the inner sealing portion 241 is between 0.20mm and 0.40mm, the penetration difficulty of the infusion needle is low, and the processing difficulty is low; when the thickness of the inner sealing part 241 is smaller than 0.20mm, the inner sealing part is easy to burn through in the injection molding process, the processing difficulty is high, and the rejection rate is high; when the thickness of the inner seal portion 241 is greater than 0.40mm, cutting resistance is large, penetration difficulty is large, and cutting chips are easily generated. Preferably, the thickness of the inner sealing portion 241 is 0.30mm, and the overall performance is optimal when the thickness of the inner sealing portion 241 is 0.30 mm.

In this embodiment, the first outer sealing portion 222 is a frangible cap or tab. Specifically, the frangible cap and the pull ring are both easily opened to expose the inner plug 230 for ease of use by the healthcare worker.

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.

Example 2

As shown in fig. 7 to 12, this embodiment differs from embodiment 1 in that: the first joint pipe 200 includes two first mounting end portions 220, the two first mounting end portions 220 are arranged at intervals along the radial direction of the first joint pipe 200 and are communicated with the same first communication cavity 210, and the first mounting end portions 220 and the inner plugs 230 are arranged in one-to-one correspondence. Specifically, the two first mounting 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 mounting end 220 is used for dispensing and transfusion are avoided. Optionally, the radius of the inner plugs 230 in the two first mounting ends 220 are different, the small inner plug 230 in the first mounting end 220 is used for dispensing, the large inner plug 230 in the first mounting 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 mounting ends 220 are respectively of different colors for ease of use by the 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. 13 to 18, 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 dispensing and transfusion respectively, so that pollution risks caused by repeated puncture of one inner plug 230 when one first joint pipe 200 is used for dispensing and transfusion are 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. 19 to 24, this embodiment differs from embodiment 1 in that: the first coupling tube 200 further includes a second mounting end portion 250, the first mounting end portion 220 and the second mounting end portion 250 being spaced apart in a radial direction of the first coupling tube 200 and each communicating with the same first communication chamber 210, the second mounting end portion 250 including a second mounting chamber 251 for sealing connection with an infusion needle, a top of the second mounting end portion 250 being integrally formed with a second outer sealing portion 252 for sealing a top of the second mounting chamber 251. Specifically, the first mounting end 220 is used for dispensing medicine, the second mounting end 250 is used for infusion, the second mounting cavity 251 is used for realizing puncture guiding of the infusion needle, the inner diameter of the second mounting cavity 251 is in interference fit with the outer diameter of the infusion needle so as to realize sealing after puncture, and the second mounting cavity 251 is communicated with the first communicating cavity 210 due to the fact that the top of the second mounting cavity 251 is sealed by the second outer sealing part 252, and the second outer sealing part 252 and the second mounting end 250 are integrally formed, so that the sealing performance is good, namely, the liquid medicine enters the second mounting cavity 251 and can be prevented from contacting with the external environment. 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 the second mounting cavity 251 being in interference fit with the infusion needle, thereby providing a seal during lancing without the use of the inner plug 230, which greatly reduces the manufacturing cost of the connector. Optionally, the second outer seal 252 is a frangible cap or tab.

Example 5

As shown in fig. 25 to 30, this embodiment differs from embodiment 1 in that: the joint includes the second joint pipe 300, and 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, and the second joint pipe 300 is including the second intercommunication chamber 310 that is used for the inner chamber of intercommunication infusion bag and with the third installation tip 320 of second intercommunication chamber 310 intercommunication, and third installation tip 320 is including being used for with infusion needle sealing connection's third installation chamber 321, the top integrated into one piece of third installation tip 320 has the third outer seal portion 322 that is used for sealing the top of third installation chamber 321. Specifically, the first connector tube 200 is used for preparing liquid, the second connector tube 300 is used for infusion, the third installation cavity 321 is used for puncture guiding to the infusion needle, the inner diameter of the third installation cavity 321 is in interference fit with the outer diameter of the infusion needle so as to realize sealing after puncture, and the third installation cavity 321 is sealed by the third outer sealing part 322, and the third outer sealing part 322 and the third installation end part 320 are integrally formed, so that the tightness is good, namely, the liquid medicine enters the third installation cavity 321 and can be prevented from being contacted with the external environment, and therefore, the third installation cavity 321 is communicated with the second communication cavity 310. 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 through the third mounting cavity 321 in interference fit with the infusion needle, thereby providing a seal during lancing without the use of the inner plug 230, which greatly reduces the manufacturing cost of the connector. Optionally, the third outer seal 322 is a frangible cap or tab.

Example 6

As shown in fig. 31 to 36, 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 joint tube 200 is used for dispensing, the third joint tube 400 is used for transfusion, the third joint tube 400 is connected with the cover body through the connecting platform 420, and the inner cavity of the cover body is communicated through the conical opening 430, so that the infusion needle is ensured to stably puncture. 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 inner clamping closed-hole type connector in any embodiment. Specifically, the opening of the infusion bag is sealed through the inner clamping closed hole type connector, so that the injection molding processing difficulty and the assembly difficulty are reduced, the production and the assembly are facilitated, and the production efficiency is improved.

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 an inside callipers closed cell type connects, including joint seat (100) and first joint pipe (200) of being connected with joint seat (100), first joint pipe (200) are including first intercommunication chamber (210) that are used for the inner chamber of intercommunication infusion bag, first installation tip (220) with first intercommunication chamber (210) and with first joint pipe (200) integrated into one piece and lay interior stopper (230) in first installation tip (220), a serial communication port, first installation tip (220) are including first installation chamber (221) that are used for installing interior stopper (230), the top integrated into one piece of first installation tip (220) has first outer sealing portion (222) that are used for sealing the top of first installation chamber (221), the lateral wall joint of first installation chamber (221) has interior cassette (240) that are used for pressing fixed interior stopper (230), the middle part of interior cassette (240) is including being used for sealing the interior sealing portion (241) of the bottom of first installation chamber (221).

2. The inside callipers closed cell type joint according to claim 1, wherein the inside calliper (240) further comprises an inside calliper ring (242) which is clamped with the inside wall of the first mounting cavity (221) and used for pressing and fixing the inside plug (230), the inside wall of the inside calliper ring (242) is enclosed to form a sinking cavity (243) communicated with the first mounting cavity (221), the bottom of the inside calliper ring (242) is integrally formed with the inside sealing part (241), and the inside sealing part (241) is used for sealing the bottom of the sinking cavity (243).

3. The internally clamped closed cell joint according to claim 1, wherein the outer side wall of the internal clamping ring (242) comprises an arc-shaped protrusion (244) which is formed by extending obliquely downwards along the axial direction and outwards along the radial direction, the side wall of the first mounting cavity (221) comprises an arc-shaped groove which is formed by recessing downwards along the axial direction and outwards along the radial direction, the arc-shaped protrusion (244) is clamped and connected with the arc-shaped groove, and the lower end face of the arc-shaped protrusion (244) is horizontally abutted with the lower end part of the arc-shaped groove.

4. The inside callipers closed cell type joint according to claim 1, wherein the first outer seal (222) is a frangible cap or tab.

5. An internally clamped closed cell joint according to any of claims 1-4, wherein the first joint pipe (200) comprises two first mounting ends (220), the two first mounting ends (220) being arranged at intervals in the radial direction of the first joint pipe (200) and each being in communication with the same first communication chamber (210), the first mounting ends (220) and the inner plug (230) being arranged in a one-to-one correspondence.

6. An internally clamped closed cell joint according to any of claims 1-4, characterized in that the joint comprises two first joint tubes (200), the two first joint tubes (200) being arranged at intervals along the length of the joint block (100) and being mounted on the same joint block (100).

7. The female closed cell connector as claimed in any one of claims 1-4 wherein the first connector tube (200) further comprises a second mounting end portion (250), the first mounting end portion (220) and the second mounting end portion (250) being spaced apart along a radial direction of the first connector tube (200) and each communicating with the same first communication chamber (210), the second mounting end portion (250) comprising a second mounting chamber (251) for sealing connection with an infusion needle, a top portion of the second mounting end portion (250) being integrally formed with a second outer sealing portion (252) for sealing a top portion of the second mounting chamber (251).

8. The inside-clamping closed-cell type connector according to any one of claims 1 to 4, wherein the connector comprises a second connector tube (300), the first connector tube (200) and the second connector tube (300) are arranged at intervals along the length direction of the connector base (100) and are all mounted on the same connector base (100), the second connector tube (300) comprises a second communicating cavity (310) for communicating with the inner cavity of the infusion bag and a third mounting end part (320) communicated with the second communicating cavity (310), the third mounting end part (320) comprises a third mounting cavity (321) for being in sealing connection with the infusion needle, and a third outer sealing part (322) for sealing the top of the third mounting cavity (321) is integrally formed at the top of the third mounting end part (320).

9. The inside-clamping closed-cell type connector according to any one of claims 1 to 4, wherein the connector comprises a third connector tube (400), the first connector tube (200) and the third connector tube (400) are arranged at intervals along the length direction of the connector base (100) and are all arranged on the same connector base (100), and the third connector tube (400) comprises a third communicating 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 opening (430) which is formed by encircling the inner side walls of the connecting platform (420) and is communicated with the third communicating cavity (410) and is used for communicating with the inner cavity of the outer cover body.

10. An infusion bag comprising an inner snap-in hole connector according to any one of claims 1-9.