CN210170589U - Syringe with a needle - Google Patents
Syringe with a needle Download PDFInfo
- Publication number
- CN210170589U CN210170589U CN201920150924.8U CN201920150924U CN210170589U CN 210170589 U CN210170589 U CN 210170589U CN 201920150924 U CN201920150924 U CN 201920150924U CN 210170589 U CN210170589 U CN 210170589U
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- China
- Prior art keywords
- plunger rod
- insert
- barrel
- side wall
- boring part
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Abstract
The utility model provides an injector, which comprises a barrel body provided with a needle joint, wherein a first boring part and a second boring part are arranged inside the barrel body; a plunger disposed within the first bore portion; the plunger rod is arranged on the barrel, and the notches and/or the protrusions are symmetrically arranged in an array along at least one part of the length of the plunger rod; an insert provided in the second bore portion and provided with a cruciform opening for passage of the plunger rod, the two co-linear channels being provided with fingers which, in use, engage with an array of recesses and/or projections on the plunger rod; the side wall of the barrel body where the second boring part is located is provided with at least two screw holes, the annular side wall of the insert installed on the second boring part is provided with a butt joint internal thread hole matched with the screw holes, and the side wall of the barrel body where the second boring part is located is provided with a screw for fixing the insert. The injector utilizes the screw to reinforce and install the insert, thereby effectively improving the stability and reliability of the installation of the insert.
Description
Technical Field
The utility model relates to an injection device especially relates to an injector.
Background
The use of the injector is relatively extensive, and the traditional injector usually directly pushes the injection liquid, and cannot give a certain prompt to an operator in the pushing process, for example, the operator is given a prompt (such as a voice prompt) when injecting a certain dose of injection medium, so that the operator can better know the completed injection dose.
In the medical and cosmetic field, if an injector with an injection dosage prompt can be provided, the technical operation can be completed by more attentive medical workers.
Patent publication CN104994897B discloses a syringe in which, in use, with the insert located within the second bore portion and the plunger rod passing through the bore defined by the insert, when the plunger rod is moved relative to the barrel along axis a-a, two fingers on the insert ride along notches and/or projections on the plunger rod to produce an audible click. This type of syringe can hear a click to help the physician speak the correct dose to the patient and to make the patient sure that the requested/prescribed dose has been administered.
The inventor finds that the structural strength between the insert and the barrel of the injector is insufficient in the using process, and the using effect is poor under the condition that the insert is loosened.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a syringe, it can improve the structural stability and the reliability of insert installation in the barrel.
The utility model provides a syringe, it includes: the needle joint is arranged at one end of the cylindrical barrel, a first boring part close to the needle joint and a second boring part close to the tail part of the barrel are arranged in the barrel, and the first boring part and the second boring part are adjacently arranged; a plunger disposed within the first bore portion and movable along an inner wall of the first bore portion, the plunger being made of an elastomer; the plunger rod is arranged in the barrel, one end of the plunger rod is connected with the plunger, the other end of the plunger rod is provided with the pressing head, and the plunger rod with the cross-shaped section is symmetrically provided with notches and/or bulges in an array along at least one part of the length of the plunger rod; an insert provided in the second bore portion and provided with a cruciform opening for passage of the plunger rod, the two co-linear channels being provided with fingers which, in use, engage with an array of recesses and/or projections on the plunger rod; the wall thickness of a cylinder body where the second boring part is located is 0.5-1.5cm, at least two screw holes are circumferentially arranged on the side wall of the cylinder body where the second boring part is located, a butt joint internal thread hole matched with the screw holes is formed in the annular side wall of an insert installed on the second boring part, and screws for fixing the insert are arranged on the side wall of the cylinder body where the second boring part is located.
Compared with the prior art, the utility model provides a syringe utilizes the screw to carry out the reinforcement installation of insert, the effectual stability and the reliability that improve the insert installation, and the installation is all comparatively simple with the operation.
Furthermore, the surface of the side wall of the barrel where the second boring part is located is sleeved with a flexible sleeve, and the flexible sleeve can avoid metal devices such as screws from contacting with the external environment, so that the use safety is improved, and the screws can be prevented from being corroded by the external environment. Furthermore, the flexible sleeve is a rubber sleeve, the rubber sleeve can be conveniently sleeved for operation, the rubber sleeve which can deform can be elastically contracted and tightly sleeved on the barrel, and the self stability can be ensured by the installation effect of tight fit.
Furthermore, the screw holes are symmetrically arranged on the side wall of the barrel body where the second boring part is located, so that the insert is guaranteed to be symmetrically stressed after being installed.
Furthermore, the wall thickness of the annular side wall of the insert is 0.3-0.5cm, the annular side wall with the thickness can effectively meet the matching installation operation of the screw, and the excessively thin wall thickness is not favorable for the installation of the screw and the strength of the structure of the screw.
Further, the rubber sleeve is a cylindrical sleeve or a cylindrical sleeve with an end head, and the end head is tightly attached to the left end part of the barrel.
Drawings
Fig. 1 is a schematic diagram of the structure of the syringe.
Fig. 2 is a schematic structural diagram of another type of syringe.
Detailed Description
The present invention will now be described in more detail with reference to the drawings, in which preferred embodiments of the invention are shown, it being understood that one skilled in the art could modify the invention herein described while still achieving the beneficial effects of the invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.
As shown in figure 1, the injector comprises a cylindrical barrel body 1, a needle connector 2 is arranged at one end of the barrel body, a first boring part 3 close to the needle connector 2 and a second boring part 4 close to the tail part of the barrel body are arranged in the barrel body, and the first boring part 3 and the second boring part 4 are adjacently arranged. A plunger 5, made of an elastomer, disposed within the first bore portion and movable along an inner wall of the first bore portion. One end of a plunger rod 6 arranged on the barrel is connected with the plunger 5, the other end of the plunger rod is provided with a pressing head 7, and the plunger rod with a cross-shaped section is symmetrically provided with an array of notches and/or bulges 9 along at least one part of the length of the plunger rod. An insert 8 provided in the second bore portion and provided with a cross-shaped opening for passage of the plunger rod, the two co-linear channels being provided with fingers which in use engage an array of recesses and/or projections on the plunger rod. Such syringe structure is well known in the art, and reference is made to related art such as CN104994897B mentioned in the background.
With reference to fig. 1, the wall thickness of the cylinder where the second boring portion is located is 0.5-1.5cm, for example, 0.8cm is selected, two screw holes are circumferentially arranged on the side wall of the cylinder where the second boring portion is located, the two screw holes are symmetrically distributed, the annular side wall of the insert mounted on the second boring portion is provided with a butt-joint internal thread hole matched with the screw hole, and the side wall of the cylinder where the second boring portion is located is provided with a screw 10 for fixing the insert.
The injector can be seen from the above, the injector utilizes the screw to reinforce and install the insert, the stability and the reliability of the installation of the insert are effectively improved, and the installation and the operation are simple.
It is worth mentioning that the flexible sleeve 11 is sleeved on the surface of the side wall of the cylinder body where the second boring part is located, and the flexible sleeve can avoid metal devices such as screws from contacting with the external environment, so that the use safety is improved, and the screws can be prevented from being corroded by the external environment. As an option, the flexible sleeve is the rubber sleeve, and this rubber sleeve can be convenient cup joint the operation, and the rubber sleeve that can produce deformation can elastic shrinkage and tightly overlap and establish on the barrel, and the stability of self can be guaranteed to the installation effect of tight fit.
In addition, the screw holes are symmetrically arranged on the side wall of the barrel body where the second boring part is located, so that symmetrical stress of the insert after installation can be guaranteed.
Alternatively, the wall thickness of the annular side wall of the insert is 0.3-0.5cm, the annular side wall with the thickness can effectively meet the matching installation operation of the screw, and the excessively thin wall thickness is not favorable for the installation of the screw and the strength of the structure of the screw.
A hand-held ear on the barrel is provided at the transition between the first bore portion and the second bore portion, the hand-held ear facilitating an operator to hold the syringe for an injection procedure.
It should be noted that the screw hole is a stepped hole on the side wall of the barrel, and the stepped hole can ensure that the head of the screw is sunk into the stepped hole, so as to prevent the screw from being exposed on the surface of the barrel.
The screw can adopt the metal screw, also can adopt the plastics screw, and no matter the screw of any kind of material, the head of guaranteeing the screw does not expose the barrel surface, even can effectually guarantee like this not have the existence of flexible cover, also can not be because of the head of screw fish tail people's hand.
The utility model provides an injector is owing to be provided with the semicircular bulge that the array arranged on the plunger rod (have the clearance between the adjacent semicircular bulge, the cross-section has this semicircular bulge structure for criss-cross plunger rod symmetrical arrangement), and be provided with in two cell bodies of symmetry in passing through the opening in the cross of insert with the meshing of semicircular bulge finger-like thing (can with the protruding slice of semicircular bulge meshing), thereby let the cooperation of semicircular bulge and finger-like thing and send the click sound at the in-process of plunger rod propelling movement injection liquid, just can let the semicircular bulge of finger-like thing cooperation click sound because the bellied adjacent distance of semicircular bulge can decide the propelling movement certain distance, thereby indicate corresponding injection dosage (this is decided by the bellied interval of adjacent semicircle, prior art such as ZL2014800057722 can be referred to the principle).
As an improvement, referring to fig. 2, the rubber sleeve is provided with a cylindrical sleeve with an end head, the end head is tightly attached to the left end part of the cylinder body, and the rubber sleeve can play a role of buffering when the pressing head abuts against the left end part of the cylinder body. The length of the end head extending out of the main body part of the cylindrical rubber sleeve is matched with the wall thickness of the left end part of the cylinder, and the wall thickness of the end head is the same as that of the main body part of the cylindrical rubber sleeve.
The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.
Claims (1)
1. A syringe, comprising:
the device comprises a cylindrical barrel, a pin joint is arranged at one end of the barrel, a first boring part close to the pin joint and a second boring part close to the tail of the barrel are arranged in the barrel, and the first boring part and the second boring part are adjacently arranged;
a plunger disposed within the first bore portion and movable along an inner wall of the first bore portion, the plunger being made of an elastomer;
the plunger rod is arranged in the barrel, one end of the plunger rod is connected with the plunger, the other end of the plunger rod is provided with the pressing head, and the plunger rod with the cross-shaped section is symmetrically provided with notches and/or bulges in an array along at least one part of the length of the plunger rod;
an insert provided in the second bore portion and provided with a cross-shaped opening for passage of the plunger rod, the two co-linear channels being provided with fingers which, in use, engage the array of recesses and/or projections on the plunger rod;
the wall thickness of a cylinder body where the second boring part is located is 0.5-1.5cm, at least two screw holes are circumferentially arranged on the side wall of the cylinder body where the second boring part is located, a butt joint internal thread hole matched with the screw holes is arranged on the annular side wall of an insert installed on the second boring part, and a screw for fixing the insert is arranged on the side wall of the cylinder body where the second boring part is located;
a flexible sleeve is sleeved on the surface of the side wall of the cylinder body where the second boring part is located; the flexible sleeve is a rubber sleeve;
the screw holes are symmetrically arranged on the side wall of the barrel body where the second boring hole part is located;
the wall thickness of the annular side wall of the insert is 0.3-0.5 cm;
the rubber sleeve is a cylindrical sleeve or a cylindrical sleeve with an end head, and the end head is tightly attached to the left end part of the cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920150924.8U CN210170589U (en) | 2019-01-29 | 2019-01-29 | Syringe with a needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920150924.8U CN210170589U (en) | 2019-01-29 | 2019-01-29 | Syringe with a needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210170589U true CN210170589U (en) | 2020-03-24 |
Family
ID=69829273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920150924.8U Active CN210170589U (en) | 2019-01-29 | 2019-01-29 | Syringe with a needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210170589U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112870491A (en) * | 2021-03-01 | 2021-06-01 | 广州联合丽拓生物科技有限公司 | Feite needle |
-
2019
- 2019-01-29 CN CN201920150924.8U patent/CN210170589U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112870491A (en) * | 2021-03-01 | 2021-06-01 | 广州联合丽拓生物科技有限公司 | Feite needle |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 201114 Room 201, 206-210, building 3, No. 999, Jiangyue Road, Minhang District, Shanghai Patentee after: SHANGHAI MOYANG BIOLOGICAL TECHNOLOGY Co.,Ltd. Address before: 201112 room 205, building 3, No. 999, Jiangyue Road, Minhang District, Shanghai Patentee before: SHANGHAI MOYANG BIOLOGICAL TECHNOLOGY Co.,Ltd. |
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| CP02 | Change in the address of a patent holder |