CN210494776U

CN210494776U - Bottle inserting needle with leakage-proof adhesion-free PE (polyethylene) vent plug

Info

Publication number: CN210494776U
Application number: CN201920786866.8U
Authority: CN
Inventors: 李慎贵; 苏卫东; 朱磊峰; 马建强; 祝尔加; 易均萍
Original assignee: Zhejiang Fert Medical Device Co ltd
Current assignee: Zhejiang Fert Medical Device Co ltd
Priority date: 2019-05-29
Filing date: 2019-05-29
Publication date: 2020-05-12
Anticipated expiration: 2029-05-29

Abstract

The utility model discloses a bottle inserting needle of gluing PE transom stopper is exempted from in leak protection is equipped with, a serial communication port, include: a needle body and a transom plug; an air inlet channel and a liquid medicine channel are arranged in the needle body; the needle body is also provided with an installation groove which is annularly provided with one end of the air inlet channel; the air window plug is inserted in the mounting groove in an interference fit manner and hoops the air filtering membrane on the port of the air inlet channel. The utility model discloses an interference fit between transom stopper lateral surface and the bottle inserting needle mounting groove side has realized exempting from of transom stopper glues sealing connection, cramps the sealed port of inlet channel with filtration membrane through the interact between transom stopper inner wall and the inlet channel lateral surface simultaneously, has realized filtration membrane exempting from to glue sealed fixed, has avoided viscose to dissolve in the current bottle inserting needle and has brought the appearance of the injury condition for patient in to the liquid medicine.

Description

Bottle inserting needle with leakage-proof adhesion-free PE (polyethylene) vent plug

Technical Field

The utility model relates to the field of medical equipment, especially a bottle inserting needle that is equipped with leak protection and exempts from to glue PE transom stopper.

Background

The air window plug is a fitting for preventing air leakage and liquid leakage of an air hole on the bottle inserting needle, and when the air window cover is opened, air can smoothly enter to cover the air window cover, air cannot enter, and liquid medicine cannot leak. Usually, the air window is made of PVC material and then is adhered to the bottle inserting needle. Because the PVC material is sensitive to temperature and has large contractibility, air leakage and liquid leakage are easily caused after the product is sterilized. Although the method of manual water detection is adopted in production, the risk of leakage still exists, and a large amount of labor is consumed. Meanwhile, the existing air filtering membrane arranged at the port of the bottle inserting needle air inlet channel is usually bonded by viscose, however, the viscose adopted by the connection mode can be dissolved into the liquid medicine and then enters the body of the patient along with the liquid medicine inevitably, and therefore certain harm is brought to the patient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a do not use viscose can with transom stopper and bottle inserting needle, filtration membrane and bottle inserting needle sealing connection be equipped with the leak protection and exempt from to glue bottle inserting needle of PE transom stopper.

In order to realize the technical effects, the utility model adopts the technical scheme that:

a bottle inserting needle provided with a leakage-proof adhesion-free PE (polyethylene) air window plug is characterized by comprising: a needle body and a transom plug; an air inlet channel and a liquid medicine channel are arranged in the needle body; the needle body is also provided with an installation groove which is annularly arranged at one end of the air inlet channel; the air window plug is inserted in the mounting groove in an interference fit manner and hoops the air filtering membrane on the port of the air inlet channel.

The utility model discloses an interference fit between transom stopper lateral surface and the bottle inserting needle mounting groove side has realized exempting from of transom stopper glues sealing connection, hoops the sealed port of filtration membrane tightly on inlet channel through the interact between transom stopper inner wall and the inlet channel lateral surface simultaneously, has realized filtration membrane exempting from to glue sealed fixed. The occurrence of the condition that the viscose in the prior bottle inserting needle is dissolved into the liquid medicine to hurt the patient is avoided.

Further, the louver plug includes: the connecting column is made of PE materials and comprises a connecting section and a sealing section, a blocking plate is arranged on the end face of the sealing section, and a louver hole communicated with an air passage of the connecting column is formed in the blocking plate; one side of the sealing cover is provided with a plugging head; when the air window is sealed, the plugging head is inserted in the air window hole in an interference fit manner. The PE material is small in temperature sensitivity, and even if the external temperature changes greatly, large volume changes can not occur, so that interference fit between the louver plug and the bottle inserting needle can not be influenced, and the tightness of the louver plug, the bottle inserting needle and the air filtering membrane at the port of the air inlet channel is guaranteed.

Further, a connecting belt is arranged between the sealing cover and the connecting column. The sealing cover is ensured not to be lost after the separation plate is disengaged.

Furthermore, an introducing port is arranged at a port of the air window hole, which is far away from one end of the connecting column. Can be more convenient quick will block up the head and leading-in to the transom hole in, realize the sealing connection of interference.

Furthermore, one end, far away from the sealing cover, of the plugging head is provided with an expansion head in a horn mouth shape, the expansion head is in interference fit with the air window hole, and the front end of the expansion head penetrates out of the air window hole to one side, close to the connecting column, of the blocking plate. The pressure between the expansion head and the inner wall of the air window hole is increased to achieve a better sealing effect, and meanwhile, the expansion head plays a role in opening the air window hole when entering the air window hole, so that the plugging head with the smaller diameter at the rear part can conveniently enter the air window hole.

Further, a circle of flange is arranged on the outer edge of the front end of the expansion head in the circumferential direction; when sealing, the flange joint is in on the terminal surface that baffler is close to spliced pole one side. Prevent that choke plug and expansion head from being extruded away by the baffler.

Furthermore, the connecting column is of a step column structure, and the diameter between the sealing section and the connecting section of the connecting column is gradually reduced. The assembly of the connecting column and the bottle inserting needle is convenient.

Furthermore, one end of the sealing cover opposite to the connecting belt is provided with at least one friction convex edge. The plugging head and the expanding head are conveniently pulled out from the blocking plate.

Drawings

FIG. 1 is a view showing an installation state of the present invention;

fig. 2 is a schematic view of the present invention in an open state of the louver plug;

fig. 3 is a schematic view of the sealing state of the transom plug of the present invention.

Reference numerals: 1. the air window plug 11, the sealing cover 111, the blocking head 112, the expanding head 113, the flange 114, the friction convex edge 12, the connecting column 121, the connecting section 122, the sealing section 123, the air channel 13, the blocking plate 131, the air window hole 132, the introducing port 14, the connecting belt 2, the needle body 21, the air inlet channel 22, the liquid medicine channel 23, the mounting groove 3 and the air filtering membrane.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The bottle inserting needle provided with the leakage-proof adhesion-free PE air window plug shown in the figure 1 comprises a needle body 2, the air window plug 1 and an air filtering membrane 3, wherein the air window plug 1 and the air filtering membrane are installed on the needle body.

The inside of the needle body is provided with an air inlet channel 21 and a liquid medicine channel 22 which are communicated along the length direction, and the surface of the needle body is also provided with an installation groove 23 which is annular and is positioned at one end of the ventilation channel and is coaxial with the ventilation channel. The air window plug 1 is inserted in the mounting groove in an interference fit manner, and the sealing connection with the needle body is realized. Meanwhile, one end of the air inlet channel, which is close to the air window plug, is coated with an air filtering membrane 3, the edge of the air filtering membrane 3 is tightly hooped on the outer wall at the port of the air vent channel by the inner wall of the air window plug, and external air enters the infusion bottle from the air filtering membrane, so that the balance adjustment of the air pressure in the infusion bottle is realized.

The utility model relates to a be equipped with leak protection and exempt from to glue bottle inserting needle of PE transom stopper further improves and lies in, as shown in fig. 2, fig. 3, transom stopper 1 includes spliced pole 12 of PE material and the sealed lid 11 of PE material, and wherein the spliced pole is cylindrical structure, and at its inside axial be provided with an air flue 123, the both ends of spliced pole are linkage segment 121 and seal segment 122 respectively, and wherein the linkage segment is pegged graft in the mounting groove 23 of bottle inserting needle to realize sealing connection through the interference fit between the two. The end face of the sealing section 121 is provided with a blocking plate 13 covering the end of the air passage 123, the blocking plate is also made of PE, and a louver hole 131 coaxial with the air passage 123 is formed through the blocking plate. And a cylindrical plugging head 111 is arranged on the sealing cover 11, the outer diameter of the plugging head is slightly larger than the inner diameter of the air window hole 131, and when the plugging head is inserted into the air window hole, the plugging head and the air window hole are in interference fit sealing connection, so that the effect of sealing the air window hole is achieved.

The utility model relates to a be equipped with leak protection and exempt from to glue bottle inserting needle of PE transom stopper lies in, as shown in fig. 2, fig. 3, is provided with a connecting band 14 that links together the two between sealed lid 11 and spliced pole 12, and wherein this connecting band is the PE material equally, and moulds plastics with sealed lid and spliced pole together and form. So that the sealing cover 11 and the blocking plate 13 are not lost when in a non-matching state. Meanwhile, in the embodiment, the connecting band 14 is a V-shaped structure, the edge of one end of the connecting band is connected with the edge of the sealing cover 11, and the edge of the other end of the connecting band is connected with the edge of the sealing section 122. Moreover, the V-shaped structure of the connecting belt has certain length adjusting capacity, and a certain buffering effect can be achieved when the blocking plate is pulled out of the sealing cover.

The utility model relates to a be equipped with leak protection and exempt from to glue bottle inserting needle of PE transom stopper lies in, as shown in fig. 2, 3, is provided with an introducing port 132 in the port department that transom hole 131 kept away from spliced pole one end, and in particular embodiment, this introducing port is the horn mouth of a 30 ~45 chamfer, and the diameter of this introducing port 132 is greater than the diameter of transom hole 131. Therefore, when the front end (end far from the sealing cover) of the plugging head 111 enters the introducing port 132, the coaxial position with the louver hole can be smoothly reached under the guiding of the introducing port; meanwhile, because the blocking head and the air window hole are in interference fit, the situation that the blocking head is difficult to insert into the air window hole often exists, and the leading-in port can be used for reducing the front end of the blocking head through the gradually reduced caliber of the blocking head before the blocking head enters the air window hole until the diameter of the front end of the blocking head is reduced to be matched with the size of the air window hole, so that the plug bush can conveniently enter the air window hole.

The utility model relates to a be equipped with leak protection and exempt from to glue bottle inserting needle of PE transom stopper lies in, as shown in fig. 2, 3, is provided with expansion head 112 in the one end that sealed lid was kept away from to jam head 111, and the external diameter of this expansion head slightly is greater than the external diameter of jam head and when sealed the front end portion of expansion head is worn out outside the transom hole to the baffler and is close to spliced pole one side. The expansion head is of a horn mouth structure and is smoothly connected with the blocking head. After the expansion head enters into the transom hole, the cooperation between it and the transom hole will be inseparabler, effectual promotion the utility model discloses a sealed effect.

The utility model relates to a be equipped with leak protection and exempt from to glue bottle inserting needle of PE transom stopper lies in, as shown in fig. 2, 3, the outer fringe of the part of fenestra hole is worn to expansion head 112 circumference and is provided with round flange 113. When the expansion head enters the air window hole during sealing, the flange 113 penetrates through the air window hole along with the part of the expansion head 112 extending out of the air window hole to the end face of the blocking plate close to one side of the connecting column 12, and at the moment, the flange and the end face of the blocking plate are mutually matched to play a buckling role so as to prevent the air window hole from extruding the blocking head 111 and the expansion head 112 inside the air window hole.

The utility model relates to a bottle inserting needle with a leakage-proof adhesion-free PE transom stopper, which is further improved in that, as shown in figures 2 and 3, a connecting column 12 is in a stepped column shape with gradually reduced sectional areas from a sealing section 122 to a connecting section 121; in this embodiment, the connecting column has a step column with three coaxial lines and steps reduced step by step, when the connecting column is inserted into the bottle inserting needle, the end with smaller cross section area of the connecting column extends into the mounting groove 23 which is matched with the connecting column and also has steps, and the guiding and positioning effects are achieved. The subsequent plug bush fit of interference between the two is facilitated.

The utility model relates to a be equipped with leak protection and exempt from to glue bottle inserting needle of PE transom stopper lies in, as shown in fig. 2, 3, the sealed one end that covers 11 and connecting band 14 is relative is provided with the protruding stupefied 114 of at least friction to increase in the user will block up the stopper head and expand the head and pull out the transom. Preferably, the friction ridges 114 are vertically equally spaced from the fingers pinching the seal cover.

It should be noted that the utility model relates to a be equipped with leak protection and exempt from to glue bottle inserting needle of PE transom stopper, wherein realize the plug bush through the linkage segment 121 of spliced pole 12 in the transom stopper between transom stopper 1 and the mounting groove 23 and connect. In the actual assembling process, because spliced pole 12 adopts the PE material, consequently, better pliability has, the linkage segment 121 when the linkage segment of spliced pole is impressed to the bottle inserting needle in, certain throat has been realized under the effect of bottle inserting needle to the linkage segment, and after the linkage segment 121 is impressed to the bottle inserting needle completely, realize interference fit's plug bush between the two and connect, and then play the sealed effect of exempting from the viscose, avoided the conventionality to realize connecting through the viscose and the viscose fuses to bringing the emergence of the condition of injury for patient in the middle of the liquid medicine. Meanwhile, because the PE has low temperature sensitivity, the large volume change caused by the temperature change can not occur, and therefore, when the external temperature change is large, the liquid leakage and gas leakage phenomenon can not occur at the joint of the connecting column 12 and the bottle inserting needle. The plugging head and the blocking plate 13 arranged on the sealing cover 11 are also made of PE materials, and the plugging head and the blocking plate are connected through an interference fit plug bush to achieve a sealing effect.

Meanwhile, when the louver plug 11 is pressed into the mounting groove 23 on the needle body, the inner wall of the connecting column hoops the air filtering membrane 3 on the outer side surface of the air inlet channel, so that a large friction force exists between the inner wall of the connecting column and the air filtering membrane, the friction force can drive the air filtering membrane 3 to move forwards along with the connecting section of the connecting column, the air filtering membrane 3 can be tightened on the end surface of the air vent channel 21, and the effect of preventing liquid medicine from leaking out from the joint of the air channel and the air filtering membrane is finally achieved.

Claims

1. A bottle inserting needle provided with a leakage-proof adhesion-free PE (polyethylene) air window plug is characterized by comprising: a needle body and a transom plug; an air inlet channel and a liquid medicine channel are arranged in the needle body; the needle body is also provided with an installation groove which is annularly provided with one end of the air inlet channel; the air window plug is inserted in the mounting groove in an interference fit manner and hoops the air filtering membrane on the port of the air inlet channel.

2. The bottle inserting needle with the leak-proof adhesion-free PE louver plug as claimed in claim 1, wherein: the louver plug includes: a connecting column made of PE material and a sealing cover; the connecting column comprises a connecting section and a sealing section, a blocking plate is arranged on the end face of the sealing section, and a louver hole communicated with an air passage of the connecting column is formed in the blocking plate; one side of the sealing cover is provided with a plugging head; when the air window is sealed, the plugging head is inserted in the air window hole in an interference fit manner.

3. The bottle inserting needle with the leak-proof adhesion-free PE louver plug as claimed in claim 2, wherein: and a connecting belt is arranged between the sealing cover and the connecting column.

4. The bottle inserting needle with the leak-proof adhesion-free PE louver plug as claimed in claim 2, wherein: and a port of the air window hole, which is far away from one end of the connecting column, is provided with an introducing port.

5. The bottle inserting needle with the leak-proof adhesion-free PE louver plug as claimed in claim 2, wherein: one end, far away from the sealing cover, of the plugging head is provided with an expansion head in a horn mouth shape, the expansion head is in interference fit with the air window hole, the front end of the expansion head penetrates out of the air window hole to one side, close to the connecting column, of the blocking plate.

6. The bottle inserting needle with the leak-proof adhesion-free PE louver plug as claimed in claim 5, wherein: a circle of flange is circumferentially arranged on the outer edge of the front end of the expansion head; when sealing, the flange joint is in on the terminal surface that baffler is close to spliced pole one side.

7. The bottle inserting needle with the leak-proof adhesion-free PE louver plug as claimed in claim 2, wherein: the connecting column is of a step column structure, and the diameter between the sealing section and the connecting section of the connecting column is gradually reduced.

8. The bottle inserting needle with the leak-proof adhesion-free PE louver plug as claimed in claim 2, wherein: and at least one friction convex edge is arranged at one end of the sealing cover opposite to the connecting belt.