CN211024545U

CN211024545U - Storage structure and injection device

Info

Publication number: CN211024545U
Application number: CN201921568678.4U
Authority: CN
Inventors: 王述芳; 任梦强; 罗来荣
Original assignee: Jiangsu Wanhai Medical Devices Co ltd
Current assignee: Jiangsu Wanhai Medical Devices Co ltd
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-07-17
Anticipated expiration: 2029-09-19

Abstract

The utility model provides a storage structure. The storage structure comprises a fixing piece, a guide groove is formed in the fixing piece, the guide groove is communicated with the outside and the through groove of the fixing piece inner cavity, the guide groove is concavely formed in the inner surface of the fixing piece, the set position of the guide groove is staggered with the set position of the guide groove, an elastic part is arranged on the groove wall of the through groove, the storage structure further comprises a storage piece, a first bulge and a second bulge are arranged on the outer surface of the storage piece, the first bulge and the second bulge are formed in the axial direction of the storage piece, the axial direction of the storage piece is sequentially arranged from the top to the bottom, and a third bulge is formed in the second bulge. The utility model discloses a storage structure can prevent that storage spare and mounting from taking place to assemble not hard up, leads to storage structure's life to descend. In addition, an injection device adopting the storage structure is also provided.

Description

Storage structure and injection device

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a storage structure and adopt this storage structure's injection device.

Background

Medical personnel often use injection devices to contain the medication to preserve the shelf life of the medication and to inject the medication when needed.

Generally, the injection device comprises a storage structure, the storage structure comprises a storage member and a fixing member, the storage member is used for storing the medicine, the fixing member and the storage member are detachably connected, the fixing member is used for fixing the storage member, and when the storage member is separated from the fixing member, the medical staff can load the medicine into an inner cavity of the storage member or replace the medicine in the storage member. If storage spare and mounting adopt the mode of joint to connect, wearing and tearing appear easily after the cooperation many times in the surface of bayonet socket and the cell wall of draw-in groove for take place easily behind buckle and the draw-in groove cooperation and become flexible, lead to storage structure's life to descend.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a magazine and an injection device using the magazine.

A storage structure comprises a fixing part, wherein a guide groove is formed in the fixing part, a through groove communicated with the outside and the fixing part inner cavity is formed in the fixing part, the guide groove is concavely formed in the inner surface of the fixing part, the forming position of the through groove and the forming position of the guide groove are staggered, an elastic part is arranged on the groove wall of the through groove, the storage structure further comprises a storage part, a first bulge and a second bulge are arranged on the outer surface of the storage part in an upward mode, the first bulge and the second bulge are sequentially arranged along the axial direction of the storage part from top to bottom, a third bulge is arranged on the second bulge, when the second bulge extends into the guide groove from the guide groove, the first bulge is abutted against the fixing part, the second bulge can be rotated into the through groove by rotating the storage part or the fixing part, and the elastic part elastically abuts against the third bulge, the second protrusion abuts against the groove wall of the through groove to prevent the storage piece and the fixing piece from being assembled and loosened.

Further, the first bulge is arranged around the circumference of the storage piece so as to increase the contact area between the first bulge and the fixing piece.

Furthermore, the number of the through grooves is two, the through grooves are symmetrically formed relative to the central axis of the fixing part, the number of the guide grooves is two, the guide grooves are symmetrically formed relative to the central axis of the fixing part, each guide groove is located between the through grooves, the number of the second protrusions is two, and the second protrusions are symmetrically formed relative to the central axis of the material storage part.

Furthermore, the opening positions of the first protrusions and the second protrusions are staggered to prevent the first protrusions from extending into the guide grooves.

Furthermore, a feedback groove is formed in the elastic part and is used for being matched with the third protrusion, when one end, far away from the second protrusion, of the third protrusion is rotated into the feedback groove, and the storage piece is installed in place relative to the fixing piece.

Furthermore, one end of the elastic part is connected with the groove wall of the through groove, the other end of the elastic part protrudes towards the direction of the third protrusion, and the elastic part is made of plastic materials.

Furthermore, one end of the third protrusion is connected with one end of the second protrusion, the other end of the third protrusion protrudes downwards along the axial direction of the material storage piece, and an included angle between the third protrusion and the second protrusion is an acute angle.

An injection device comprising a magazine structure as defined in any one of the preceding claims.

Further, injection device includes the shell, locates promote the structure in the shell and install promote structural ejector pin, the shell with the mounting is connected, the inner chamber of storage spare is the storage cavity that is used for storing the medicine, it can be close to promote the structure the direction of storage spare or keep away from the direction reciprocating motion of storage spare, work as promote the structure orientation during the direction of storage structure removes, it can drive to promote the structure the ejector pin stretch into to in the storage cavity, with the medicine is released to the external world.

Furthermore, an observation hole is formed in one end, far away from the storage piece, of the shell, a scale section is arranged on the pushing structure, a scale value is arranged on the scale section, and a user can determine the amount of pushed medicine according to the scale value.

The utility model discloses a storage structure or adopt this storage structure's injection device, because the position of seting up that leads to groove and the position of seting up of guide way stagger mutually, be equipped with the elastic part on the cell wall that leads to the groove, first arch and the protruding axial of following the storage spare of second set gradually under to from last, it is protruding to be equipped with the third in the second arch, it is protruding to leading to the inslot to be rotated to the second, first arch can block storage spare relative mounting axial downwardly moving, elastic part elasticity is supported and is held in the third arch, the protruding cell wall that leads to the groove of second supports and hold, the second arch can block storage spare relative mounting axial rebound, in addition, support through elastic part and third arch and hold, can prevent that storage spare and mounting from taking place to assemble not hard up, lead to the life decline of storage structure.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Figure 1 is a cross-sectional view of an injection device of the present invention;

fig. 2 is a cross-sectional view from another perspective of the injection device of fig. 1;

FIG. 3 is an exploded view of the magazine structure of the injection device of FIG. 1;

fig. 4 is a schematic view of the second protrusion of the magazine structure shown in fig. 3 extending into the guide slot;

FIG. 5 is a schematic view of the magazine and fastener shown in FIG. 3 in position;

fig. 6 is a perspective view of the fixing member shown in fig. 3.

The reference numbers in the drawings are as follows:

injection device 100 housing 10 magazine 20 push mechanism 30

Guide groove 221 of storage cavity 21 fixing part 22 of pushing rod 40

Through slot 222 for the first protrusion 231 and the second protrusion 232 of the magazine 23

Elastic part 2221 feedback groove 2222 third projection 2223 cover 50

Observation hole 11 of push cylinder 31 and push rod drum 32 discharge hole 233

Push button 34 push piston 41 of end cap 33 of scale part 321

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-2, the present invention provides an injection device 100, the injection device 100 includes a housing 10, a storage structure 20 connected to the housing 10, a pushing structure 30 disposed in the housing 10, and a pushing rod 40 mounted on the pushing structure 30. The storage structure 20 is provided with a storage cavity 21 for storing medicines, and when the pushing structure 30 moves towards the direction of the storage structure 20, the pushing structure 30 can drive the material pushing rod 40 to extend into the storage cavity 21, so as to push the medicines out to the outside.

Referring to fig. 1-6, the storage structure 20 includes a fixed member 22, a guide groove 221 is formed in the fixed member 22, a through groove 222 is formed in the fixed member 22 and communicates with the outside and an inner cavity of the fixed member 22, the guide groove 221 is recessed in an inner surface of the fixed member 22, an opening position of the through groove 222 is staggered with an opening position of the guide groove 221, an elastic portion 2221 is disposed on a groove wall of the through groove 222, the storage member 23 is further included, a first protrusion 231 and a second protrusion 232 are disposed on an outer surface of the storage member 23 in a protruding manner, the first protrusion 231 and the second protrusion 232 are sequentially disposed along an axial direction of the storage member 23 from top to bottom, a third protrusion 2223 is disposed on the second protrusion 232, when the second protrusion 232 extends from the guide groove 221, the first protrusion 231 abuts against the fixed member 22, the second protrusion 232 can be rotated into the through rotation of the storage member 23 or the fixed member 22, the elastic portion 2221 elastically abuts against the third protrusion, the second protrusion 232 abuts against the walls of the channel 222 to prevent the retainer 23 and the fastener 22 from loosening.

Wherein, the through slot 222 is opened at the side of the fixing member 22.

Wherein, the elastic portion 2221 and the groove wall of the through groove 222 are integrally formed. It will be appreciated that in another embodiment, not shown, the resilient portion 2221 and the walls of the channel 222 may be removably connected by snapping, bonding, or the like.

When the storage structure 20 is in a use state, the second protrusion 232 is rotated into the through slot 222, the first protrusion 231 can block the storage member 23 from moving axially downward relative to the fixing member 22, the elastic portion 2221 elastically abuts against the third protrusion 2223, the second protrusion 232 abuts against a slot wall of the through slot 222, and the second protrusion 232 can block the storage member 23 from moving axially upward relative to the fixing member 22; when the practitioner desires to load a drug into the interior chamber of the magazine 23 or to replace the drug in the magazine 23, the fastener 22 is disengaged from the magazine 23 by rotating the magazine 23 or the fastener 22 and by disengaging the second projections 232 from the guide slots 221 when the second projections 232 correspond in position to the guide slots 221.

In summary, in the storage structure 20 of the embodiment, when the second protrusion 232 is rotated into the through slot 222, the first protrusion 231 can block the storage member 23 from moving axially downward relative to the fixture 22, the elastic portion 2221 elastically abuts against the third protrusion 2223, the second protrusion 232 abuts against the slot wall of the through slot 222, and the second protrusion 232 can block the storage member 23 from moving axially upward relative to the fixture 22, and in addition, the elastic portion 2221 abuts against the third protrusion 2223, so that the storage member 23 and the fixture 22 can be prevented from being assembled loosely, which results in a reduction in the service life of the storage structure 20.

In the present embodiment, the first protrusion 231 is disposed around the circumference of the accumulator 23 to increase the contact area between the first protrusion 231 and the fixture 22.

In this embodiment, the number of the through grooves 222 is two, two through grooves 222 are symmetrically formed with respect to the central axis of the fixing member 22, the number of the guide grooves 221 is two, two guide grooves 221 are symmetrically formed with respect to the central axis of the fixing member 22, each guide groove 221 is located between two through grooves 222, the number of the second protrusions 232 is two, and two second protrusions 232 are symmetrically arranged with respect to the central axis of the magazine 23.

It is to be understood that, in another embodiment, not shown, the opening positions of the first protrusions 231 and the second protrusions 232 are staggered to prevent the first protrusions 231 from protruding into the guide grooves 221.

Referring to fig. 1-6, in the present embodiment, the elastic portion 2221 is formed with a feedback groove 2222, the feedback groove 2222 is configured to cooperate with the third protrusion 2223, and when an end of the third protrusion 2223 away from the second protrusion 232 is rotated into the feedback groove 2222, the storage member 23 is mounted in place relative to the fixing member 22.

Among them, one end of the elastic part 2221 is connected to a groove wall of the through groove 222, and the other end of the elastic part 2221 protrudes toward the third protrusion 2223.

The elastic portion 2221 may be made of plastic, silicon, rubber, or other materials. It is understood that, in another embodiment not shown, the elastic portion 2221 may also be a metal spring.

In the present embodiment, one end of the third projection 2223 is connected to one end of the second projection 232, the other end of the third projection 2223 protrudes downward along the axial direction of the magazine 23, and the included angle between the third projection 2223 and the second projection 232 is an acute angle.

In this embodiment, the third projection 2223 and the second projection 232 are integrally formed, and it is understood that in another embodiment not shown, the third projection 2223 and the second projection 232 can be connected by means of snap-fit or plug-fit.

In summary, in the magazine 20 of the present embodiment, when the second protrusions 232 are rotated into the through slots 222, the third protrusions 2223 can compress the elastic portions 2221, and when at least a portion of the third protrusions 2223 are rotated into the feedback grooves 2222, the magazine 23 and the fastener 22 can be kept relatively fixed, and at the same time, the user can be reminded that the magazine 23 has been installed in place relative to the fastener 22. When the medical professional needs to load the drug into the magazine 21 or replace the drug in the magazine 21, the third protrusions 2223 can be disengaged from the feedback grooves 2222 by rotating the magazine 23 or the fixing member 22, and the elastic portions 2221 are restored to their original positions by the elastic restoring force when the second protrusions 232 are rotated to correspond to the positions of the guide grooves 221.

The housing 10 and the fixing member 22 are two separate elements, and the two elements are detachably connected by clamping or plugging, and in this embodiment, the housing 10 and the fixing member 22 are connected by clamping. It will be appreciated that in another embodiment, not shown, the housing 10 may also be integrally formed with the fixture 22.

In this embodiment, the injection device 100 further includes a cover 50, the cover 50 and the housing 10 are detachably connected by a snap-fit or a plug-in connection, when the cover 50 and the housing 10 are assembled in place, the cover 50 can shield the magazine 20 to protect the magazine 20, and when a user needs to use the injection device 100, the cover 50 and the housing 10 are separated to expose the magazine 20.

The pushing structure 30 includes a pushing cylinder 31 accommodated in the housing 10 and a pusher drum 32 interposed between the housing 10 and the pushing cylinder 31.

The push cylinder 31 is connected with the push rod 40, the push rod drum 32 can reciprocate towards the direction close to the storage 23 or away from the storage 23, and when the push rod drum 32 moves towards the direction close to the storage 23, the push rod drum 32 drives the push cylinder 31 to move towards the storage 23, so as to drive the push rod 40 to push out the medicine in the storage cavity 21. Specifically, the inner cavity of the storage member 23 is the storage cavity 21, a discharge hole 233 is opened at one end of the storage member 23 away from the push rod drum 32, the discharge hole 233 communicates with the storage cavity 21 and the outside, and the medicine in the storage cavity 21 can be pushed out to the outside through the discharge hole 233.

It will be appreciated that the user can control the pusher drum 32 to move a distance away from the magazine 23 before controlling the pusher drum 32 to move closer to the magazine 23, while the pusher bars 40 are not displaced, and can re-push the pusher drum 32 to move closer to the magazine 23 after the user has adjusted the pusher drum 32 to move a different distance away from the magazine 23. The injection device 100 of the present embodiment adjusts the moving distance of the plunger 40 by moving the plunger barrel 32 different distances in the direction of approaching the magazine 23, thereby controlling the injection amount of the medicine.

In this embodiment, the viewing hole 11 is opened at one end of the housing 10 away from the magazine 23, the scale portion 321 is provided on the pusher drum 32, and the scale portion 321 is provided with a scale value, so that the user can determine the amount of the medicine to be ejected according to the scale value.

In the present embodiment, the pushing structure 30 further includes an end cap 33 disposed on the pusher drum 32 and a button 34 disposed on an end of the pusher drum 32 away from the magazine 23, and a user can push the button 34 to drive the pusher drum 32 to move toward the magazine 23.

In the present embodiment, one end of the pushing rod 40 extends into the storage chamber 21 and is connected to the pushing piston 41. When the pushing rod 40 moves axially, the pushing piston 41 can effectively push the medicine in the storage cavity 21 to be discharged from the discharge hole 233.

The utility model relates to a storage structure 20 and an injection device 100 using the storage structure 20, because the open position of the through slot 222 is staggered with the open position of the guide slot 221, the slot wall of the through slot 222 is provided with the elastic part 2221, the first protrusion 231 and the second protrusion 232 are sequentially arranged from top to bottom along the axial direction of the magazine 23, the second protrusion 232 is provided with the third protrusion 2223, when the second protrusion 232 is rotated into the through slot 222, the first protrusion 231 can block the storage member 23 from moving axially downward relative to the fixture 22, the elastic portion 2221 elastically abuts against the third protrusion 2223, the second protrusion 232 abuts against the slot wall of the through slot 222, the second protrusion 232 can block the storage member 23 from moving axially upward relative to the fixture 22, and in addition, by the elastic portion 2221 abutting against the third projection 2223, the magazine 23 and the fixing member 22 can be prevented from being assembled loosely, which results in a reduction in the service life of the magazine 20.

The above embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a storage structure which characterized in that: the storage structure comprises a fixing part, a guide groove is formed in the fixing part, a through groove communicated with the outside and the fixing part inner cavity is formed in the fixing part, the guide groove is concavely formed in the inner surface of the fixing part, the forming position of the through groove and the forming position of the guide groove are staggered, an elastic part is arranged on the groove wall of the through groove, the storage structure further comprises a storage part, a first bulge and a second bulge are arranged on the outer surface of the storage part in an upward protruding mode, the first bulge and the second bulge are sequentially arranged along the axial direction of the storage part from top to bottom, a third bulge is arranged on the second bulge, when the second bulge extends into the guide groove, the first bulge is abutted against the fixing part, the second bulge can be rotated into the through groove by rotating the storage part or the fixing part, and the elastic part is elastically abutted against the third bulge, the second protrusion abuts against the groove wall of the through groove to prevent the storage piece and the fixing piece from being assembled and loosened.

2. A stock structure according to claim 1, wherein: the first bulge is arranged around the circumference of the storage piece so as to increase the contact area between the first bulge and the fixing piece.

3. A stock structure according to claim 2, wherein: the number of the through grooves is two, the through grooves are symmetrically formed relative to the central axis of the fixing part, the number of the guide grooves is two, the guide grooves are symmetrically formed relative to the central axis of the fixing part, each guide groove is located between the through grooves, the number of the second protrusions is two, and the second protrusions are symmetrically arranged relative to the central axis of the material storage part.

4. A stock structure according to claim 1, wherein: the opening positions of the first protrusions and the second protrusions are staggered to prevent the first protrusions from extending into the guide grooves.

5. A stock structure according to claim 1, wherein: the elastic part is provided with a feedback groove, the feedback groove is used for being matched with the third protrusion, when one end of the third protrusion, which is far away from the second protrusion, is rotated into the feedback groove, and the storage piece is installed in place relative to the fixing piece.

6. A stock structure according to claim 5, wherein: one end of the elastic part is connected with the groove wall of the through groove, the other end of the elastic part protrudes towards the direction of the third protrusion, and the elastic part is made of plastic materials.

7. A stock structure according to claim 5, wherein: the one end of the third bulge is connected with the one end of the second bulge, the other end of the third bulge extends downwards along the axial direction of the material storage piece, and the included angle between the third bulge and the second bulge is an acute angle.

8. An injection device, characterized by: comprising a stock structure according to any one of claims 1-7.

9. The injection device of claim 8, wherein: injection device includes the shell, locates promotion structure in the shell and install promote structural ejector sleeve, the shell with the mounting is connected, the inner chamber of storage spare is for being used for storing the storage cavity of medicine, it can be towards being close to promote the structure the direction of storage spare perhaps keeps away from the direction reciprocating motion of storage spare, works as promote the structure orientation during the direction of storage structure removes, it can drive to promote the structure the ejector sleeve stretches into to in the storage cavity, in order to incite somebody to action the medicine is released to the external world.

10. The injection device of claim 9, wherein: the observation hole has been seted up to the one end of keeping away from on the shell the storage spare, promote structural scale portion that is provided with, be provided with the scale interval in the scale interval, the user can be according to the medicine volume that the scale interval was confirmed and is released.