CN212439601U

CN212439601U - Injection device

Info

Publication number: CN212439601U
Application number: CN202020352115.8U
Authority: CN
Inventors: 邢玉珊; 马栋; 武玉娟; 吴伟东; 彭通义
Original assignee: Shandong Weigao Prefills Pharmaceutical Packaging Co Ltd
Current assignee: Shandong Weigao Prefills Pharmaceutical Packaging Co Ltd
Priority date: 2020-03-19
Filing date: 2020-03-19
Publication date: 2021-02-02
Anticipated expiration: 2030-03-19

Abstract

The utility model discloses an injection device, which comprises an injector and a connector, wherein the injector comprises a body and a cylindrical head part, and the head part comprises a matching surface, a limiting surface and a conical surface; the connector includes to embolia the head along the conical surface, be pipy casing, be equipped with the ring platform on the inner wall of the one end of casing orientation syringe, the inner wall of ring platform is equipped with a plurality of along ring platform evenly distributed, the chucking is in the buckle of fitting surface, the inner wall of ring platform is equipped with the chucking between adjacent buckle in the annular baffle of fitting surface, be equipped with the gap with the inside intercommunication of casing on the annular baffle, the width in gap is not more than 0.4mm, annular baffle, the fitting surface, buckle and ring platform form the glue space of storing up along the inner wall discrete distribution of casing, it is filled with curing glue to store up gluey space intussuseption. The utility model discloses a dual fixed of locking mode and glue some mode has solved the unreliable problem of firmness of syringe with the connector, has improved the security and the reliability of product.

Description

Injection device

Technical Field

The utility model relates to a medical apparatus technical field, more specifically say, relate to an injection device.

Background

The injection devices on the market are divided into various structural forms according to different purposes, wherein the injection device with a threaded connector is more suitable for products with high sealing requirements, and the market demand is greatly increased in recent years. Since some injection devices are limited by materials and cannot be shaped freely, if a screw connection is desired, a connector must be provided on the head of the injection device.

One of the problems affecting the tightness of the injection device is the problem of the firmness between the connector and the syringe, especially with products sterilized at high temperature, where the risk of loosening of the connector is high and even falling off.

Therefore, how to solve the problem that the connection between the connector and the syringe is easy to loosen is a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides an injection device, which adopts dual fixation of a locking mode and a glue dot mode to improve the safety and reliability of the connection between a connector and an injector.

In order to achieve the above object, the present invention provides the following technical solutions:

an injection device comprises an injector and a connector, wherein the injector comprises a body and a cylindrical head part, and the head part comprises a matching surface, a limiting surface and a conical surface;

the connector comprises a shell which is sleeved on the head portion along the conical surface and is tubular, a ring platform is arranged on the inner wall of one end, facing the body, of the shell, a plurality of buckles are arranged on the inner wall of the ring platform and are evenly distributed along the ring platform and are clamped on the matching surface, an annular baffle is arranged on the inner wall of the ring platform and is adjacent to the buckles, the annular baffle is clamped on the matching surface, a gap is formed in the annular baffle and is communicated with the interior of the shell, the width of the gap is not larger than 0.4mm, the annular baffle, the matching surface, the buckles and the ring platform form glue storage spaces which are distributed along the inner wall of the shell in a discrete mode, and curing glue is filled in the glue storage spaces.

Preferably, one side of the buckle facing the matching surface is an arc surface attached to the matching surface.

Preferably, the number of the buckles is 2-6.

Preferably, the annular baffle is arranged at one end, far away from the injector, of the annular platform, and the section of the annular baffle is rectangular or trapezoidal.

Preferably, the curing glue is UV glue.

Preferably, the inner side of the head part extends outwards from the body and is provided with a liquid conveying channel, a needle inserting channel and a glue groove for fixing the needle in sequence.

Preferably, the gap is arranged at the joint of the annular baffle and the annular platform.

Preferably, the annular baffle is respectively connected to the ring platform and the buckle through ribs, so that gaps are respectively distributed at the joint of the annular baffle and the ring platform and at the joint of the annular baffle and the buckle.

Preferably, ring baffle locates the ring platform is kept away from one side of body, the gap is followed radially locating of casing ring baffle is last, the outer end protrusion of ring platform in the tip of casing, the outer end of ring platform distributes the injecting glue recess that a plurality of is used for the injecting glue along circumference.

Preferably, the annular baffle is arranged on one side of the annular table close to the body, the gap is arranged on the annular baffle along the radial direction of the shell, an elongated slot communicated with the gap is arranged on the inner wall of the annular table, and the width of the elongated slot is equal to the width of the gap.

The utility model provides an injection device, the casing of connector is established on the syringe along the conical surface cover of syringe, and the connector passes through the buckle chucking on the fitting surface of syringe, and the annular baffle between the buckle also chucking in the fitting surface simultaneously, spacing face on the syringe can prevent connector axial displacement and break away from, and spacing face can play spacing effect to fix the connector on injection device's head. In addition, the annular baffle, the fitting surface, the buckle and the annular platform on the connector form glue storage spaces which are discretely distributed along the inner wall of the shell, and the glue storage spaces are filled with curing glue, so that the injector and the connector are bonded and fixed together, a gap communicated with the inside of the shell is formed in the annular baffle, the curing glue can be fully filled in the whole glue storage spaces, the width of the gap is not more than 0.4mm, and the glue can be prevented from overflowing in a glue dispensing process.

To sum up, the utility model discloses a locking mode and the dual fixed of gluey some mode are showing the fastness that has improved syringe and connector and are connected, adopt the locking mode fixed between syringe and the connector, and just closely the fixing is on the syringe before the point is glued to the connector, is favorable to going on of the process of gluing. The structure that adopts ring baffle and gap, existing to be favorable to the point to glue, can prevent the colloid outflow again, solved the unreliable problem of the firmness of syringe and connector, improved the security and the reliability of product.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic view of an embodiment of an injection device provided by the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic view of a syringe;

FIG. 4 is a side schematic view of the connector;

FIG. 5 is an enlarged view of portion B of FIG. 4;

FIG. 6 is a schematic cross-sectional view of the syringe and connector at the cured glue joint;

FIG. 7 is a schematic view of the head of the syringe;

FIG. 8 is a schematic view of a second embodiment of a slot;

FIG. 9 is an enlarged view of portion C of FIG. 8;

FIG. 10 is a schematic view of a third embodiment of a slot;

FIG. 11 is a schematic view of a fourth embodiment of a slot;

FIG. 12 is a schematic view of the connector of the fourth embodiment mounted on a syringe;

FIG. 13 is a schematic view of a connector provided with four snaps;

fig. 14 is a schematic view of a connector provided with five snaps.

The device comprises a connector 1, a shell 11, a gap 12, a buckle 13, a circular arc surface 131, a circular ring table 14, a glue injection groove 141, a long groove 142, an annular baffle 15, a rib 151, a curing glue 16, an injector 2, a body 21, a head 22, a conical surface 221, a limiting surface 222, a matching surface 223, a glue groove 224, a pin channel 225 and a liquid conveying channel 226.

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 core of the utility model is to provide an injection device, adopt locking mode and glue the dual fixed of some mode, improve the security and the reliability of being connected of connector and syringe.

Referring to fig. 1 to 14, fig. 1 is a schematic view of an embodiment of an injection device provided in the present invention; FIG. 2 is an enlarged view of portion A of FIG. 1; FIG. 3 is a schematic view of a syringe; FIG. 4 is a side schematic view of the connector; FIG. 5 is an enlarged view of portion B of FIG. 4; FIG. 6 is a schematic cross-sectional view of the syringe and connector at the cured glue joint; FIG. 7 is a schematic view of the head of the syringe; FIG. 8 is a schematic view of a second embodiment of a slot; FIG. 9 is an enlarged view of portion C of FIG. 8; FIG. 10 is a schematic view of a third embodiment of a slot; FIG. 11 is a schematic view of a fourth embodiment of a slot; FIG. 12 is a schematic view of the connector of the fourth embodiment mounted on a syringe; FIG. 13 is a schematic view of a connector provided with four snaps; fig. 14 is a schematic view of a connector provided with five snaps.

The utility model provides an injection device, including syringe 2 and connector 1, syringe 2 includes body 21 and head 22 that is the cylinder, and head 22 includes fitting surface 223, spacing face 222 and conical surface 221;

connector 1 includes that to embolia head 22 along conical surface 221, be pipy casing 11, be equipped with the loop platform 14 on the inner wall of casing 11 towards the one end of body 21, the inner wall of loop platform 14 is equipped with a plurality of along loop platform 14 evenly distributed, chucking in fitting surface 223 buckle 13, the inner wall of loop platform 14 is equipped with the chucking in fitting surface 223's annular baffle 15 between adjacent buckle 13, be equipped with the gap 12 with the inside intercommunication of casing 11 on the annular baffle 15, the width of gap 12 is not more than 0.4mm, annular baffle 15, fitting surface 223, buckle 13 and loop platform 14 form the glue storage space of the inner wall discrete distribution along casing 11, glue storage space intussuseption is filled with solidification glue 16.

The injector 2 comprises a body 21 and a head 22, the head 22 of the injector 2 is connected with the connector 1, the head 22 comprises a matching surface 223, a limiting surface 222 and a conical surface 221, the conical surface 221 is arranged on the outer wall of the head 22 so as to sleeve the connector 1 on the head 22 along the conical surface 221, the matching surface 223 is arranged at the inner end of the head 22, the matching surface 223 is a concave surface, and the height difference between the matching surface 223 and the conical surface 221 forms the limiting surface 222 so as to clamp the buckle 13 on the connector 1 on the matching surface 223 and prevent the connector 1 from moving axially through the limiting surface 222.

Connector 1 is including being pipy casing 11, casing 11 cover is connected fixedly at the front end of syringe 2 and with syringe 2, the inside of casing 11 is equipped with the complete opening of one end towards the outside of internal thread and casing 11, so as to be used for connecting other subassemblies, casing 11 is equipped with loop platform 14 on the inner wall of the one end of syringe 2, be equipped with a plurality of buckles 13 on the inner wall of loop platform 14, buckle 13 chucking is on the fitting surface 223 of syringe 2, and the inner wall evenly distributed of a plurality of buckles 13 along loop platform 14, with the homogeneity of atress between assurance connector 1 and the syringe 2.

Still be equipped with annular baffle 15 on the inner wall of loop platform 14 between adjacent buckle 13, annular baffle 15 is the sheet metal, and simultaneously, annular baffle 15 also blocks tightly on the fitting surface 223 of syringe 2, it should be pointed out that, buckle 13's effect is chucking fitting surface 223 fixed connector 1, and annular baffle 15's main function is to keep off gluey, so can block tightly in fitting surface 223, also can leave gap 12 that is not more than 0.4mm with fitting surface 223 to prevent to leak gluey.

Specifically, the annular baffle 15 and the inner wall of the buckle 13 are on the same cylindrical surface, so that the annular baffle 15 and the buckle 13 are firmly attached to the matching surface 223 of the syringe 2. Therefore, the annular baffle 15, the matching surface 223, the annular table 14 and the buckle 13 form a plurality of glue storage spaces distributed at intervals along the inner wall of the shell 11, and the glue storage spaces are filled with fixing glue, so that the syringe 2 and the connector 1 are adhered and fixed together through the curing glue 16, and the reliability and the safety of the connection between the syringe 2 and the connector 1 are further improved.

In addition, be equipped with the gap 12 with the inside intercommunication of casing 11 on the ring baffle 15, the circulation of glue space gas can be guaranteed to store up by gap 12, so that to solidify glue 16 and pour into the in-process that stores up the glue space into, solidify glue 16 and can fill up completely in storing up the glue space, avoid producing the cavity in the in-process that pours into glue because the air does not circulate and lead to in the glue, and according to the viscidity of glue, the width of gap 12 is not more than 0.4mm, in order to guarantee that glue can not overflow from gap 12 and go out.

The utility model provides an injection device, casing 11 of connector 1 is established on syringe 2 along syringe 2's conical surface 221 cover, and connector 1 passes through buckle 13 chucking on the fitting surface 223 of syringe 2, and annular baffle 15 between buckle 13 also chucking in fitting surface 223 simultaneously, spacing face 222 on the syringe 2 can prevent connector 1 axial displacement and break away from, spacing face 222 can play spacing effect to fix connector 1 on injection device's head 22. In addition, the annular baffle 15, the fitting surface 223, the buckle 13 and the annular platform 14 on the connector 1 form a glue storage space which is discretely distributed along the inner wall of the shell 11, and the glue storage space is filled with the curing glue 16, so that the injector 2 and the connector 1 are adhered and fixed together, the annular baffle 15 is provided with a gap 12 communicated with the inside of the shell 11, the curing glue 16 can be ensured to be filled in the whole glue storage space, the width of the gap 12 is not more than 0.4mm, and the glue can be prevented from overflowing in the glue dispensing process.

To sum up, the utility model discloses a locking mode and the dual fixed of gluey some modes are showing the fastness that has improved syringe 2 and connector 1 and be connected, adopt the locking mode fixed between syringe 2 and the connector 1, and connector 1 just closely fixes on syringe 2 before the point is glued, is favorable to going on of some gluey processes. The structure of the annular baffle 15 and the gap 12 is adopted, so that the dispensing is facilitated, the colloid can be prevented from flowing outwards, the problem that the firmness of the injector 2 and the connector 1 is unreliable is solved, and the safety and the reliability of the product are improved.

In addition to the above embodiments, in consideration of the specific arrangement of the clip 13, it is preferable that the side of the clip 13 facing the mating surface 223 is the arc surface 131 which is attached to the mating surface 223. So that the arc surface 131 on the buckle 13 and the mating surface 223 on the syringe 2 can be firmly attached together. In view of the specific number of the catches 13, on the basis of the above-described embodiment, it is preferable that the number of the catches 13 is 2 to 6. Of course, other numbers can be set as required.

In addition to the above-described embodiments, in consideration of the specific arrangement of the annular baffle 15, it is preferable that the annular baffle 15 is provided at an end of the annular table 14 away from the body 21. That is, in this embodiment, the annular baffle 15 is disposed at one end of the annular table 14 far away from the body 21, so as to increase the volume of the glue storage space, increase the volume of the curing glue 16, and further improve the firmness of adhesion between the syringe 2 and the connector 1. In view of the specific shape of the annular baffle 15, it is preferable that the annular baffle 15 has a triangular, rectangular, trapezoidal, or the like cross section in the above embodiment.

On the basis of the above embodiment, in consideration of the specific selection of the curing paste 16, it is preferable that the curing paste 16 is a UV paste. Of course, other curing glues 16 may be selected as desired. In view of the specific arrangement of the syringe 2, it is preferable that the inside of the head 22 is provided with a liquid delivery passage 226, an insertion needle passage 225, and an adhesive groove 224 for fixing the needle, which extend outward from the body 21 in this order, on the basis of the above-described embodiment.

In addition to any of the above embodiments, in consideration of the specific manner of disposing the slit 12, it is preferable that the slit 12 is disposed at the junction of the annular baffle 15 and the annular table 14. That is, in this embodiment, the slit 12 is provided at the joint between the annular baffle 15 and the annular table 14, specifically, the slit 12 penetrates through the joint between the annular baffle 15 and the annular table 14, and the annular baffle 15 is connected only to the clip 13.

In a second arrangement of the slit 12, the annular baffle 15 is connected to the annular platform 14 and the buckle 13 by the rib 151, so that the slit 12 is distributed at the joint of the annular baffle 15 and the annular platform 14 and the joint of the annular baffle 15 and the buckle 13.

In a third arrangement of the slit 12, the annular baffle 15 is disposed on a side of the annular table 14 away from the body 21, the slit 12 is disposed on the annular baffle 15 along a radial direction of the casing 11, and specifically, the slit 12 is disposed in a middle of the annular baffle 15 along the radial direction of the casing 11. The outer end of the annular table 14 protrudes out of the end of the housing 11 to increase the volume of the glue storage space, glue injection grooves 141 for injecting glue are distributed at the outer end of the annular table 14 along the circumferential direction, and the number of the glue injection grooves 141 can be one or more, so that the glue can be injected into the glue storage space from the glue injection grooves 141.

In a fourth arrangement mode related to the slit 12, the annular baffle 15 is arranged on one side of the annular table 14 close to the body 21, the slit 12 is arranged on the annular baffle 15 along the radial direction of the shell 11, a long groove 142 communicated with the slit 12 is arranged on the inner wall of the annular table 14, so that glue can be injected into the glue storage space from the long groove 142, and the width of the long groove 142 is equal to the width of the slit 12, so that the length of the slit 12 is increased, and the ventilation capacity of the slit 12 is improved.

The injection device provided by the present invention has been described in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. An injection device, characterized by comprising an injector (2) and a connector (1), wherein the injector (2) comprises a body (21) and a cylindrical head (22), and the head (22) comprises a matching surface (223), a limiting surface (222) and a conical surface (221);

the connector (1) comprises a tubular shell (11) which is sleeved in the head (22) along the conical surface (221), a ring platform (14) is arranged on the inner wall of one end, facing the body (21), of the shell (11), a plurality of buckles (13) which are uniformly distributed along the ring platform (14) and are tightly clamped on the matching surface (223) are arranged on the inner wall of the ring platform (14), annular baffles (15) which are tightly clamped on the matching surface (223) are arranged between the adjacent buckles (13) on the inner wall of the ring platform (14), gaps (12) which are communicated with the inside of the shell (11) are arranged on the annular baffles (15), the width of the gaps (12) is not more than 0.4mm, and the annular baffles (15), the matching surface (223), the buckles (13) and the ring platform (14) form glue storage spaces which are discretely distributed along the inner wall of the shell (11), the glue storage space is filled with curing glue (16).

2. The injection device as set forth in claim 1, wherein a side of the catch (13) facing the mating surface (223) is a circular arc surface (131) abutting against the mating surface (223).

3. An injection device according to claim 2, characterized in that the number of said snap-in hooks (13) is 2-6.

4. The injection device according to claim 1, wherein the annular baffle (15) is provided at an end of the annular platform (14) remote from the injector (2), the annular baffle (15) having a rectangular or trapezoidal cross-section.

5. Injection device according to claim 4, characterized in that said curing glue (16) is a UV glue.

6. An injection device according to claim 1, characterized in that the inner side of the head (22) extending outwards from the body (21) is provided with a liquid delivery channel (226), an insertion needle channel (225) and a glue groove (224) for fixing the needle in that order.

7. The injection device as set forth in any of claims 1 to 6, wherein the junction of the annular baffle (15) and the annular land (14) is provided with the slit (12).

8. The injection device according to any one of claims 1 to 6, wherein the annular baffle (15) is connected to the annular platform (14) and the catch (13) by ribs (151), respectively, such that the gap (12) is distributed at the junction of the annular baffle (15) and the annular platform (14) and the junction of the annular baffle (15) and the catch (13), respectively.

9. The injection device as set forth in any one of claims 1 to 6, wherein the annular baffle (15) is disposed on a side of the annular platform (14) away from the body (21), the slit (12) is disposed on the annular baffle (15) along a radial direction of the housing (11), an outer end of the annular platform (14) protrudes from an end of the housing (11), and glue injection grooves (141) for injecting glue are circumferentially distributed on the outer end of the annular platform (14).

10. The injection device as set forth in any one of claims 1 to 6, wherein the annular baffle (15) is disposed on a side of the annular platform (14) close to the body (21), the slit (12) is disposed on the annular baffle (15) along a radial direction of the housing (11), an elongated slot (142) penetrating the slit (12) is disposed on an inner wall of the annular platform (14), and a width of the elongated slot (142) is equal to a width of the slit (12).