CN216125049U - Internal and external dual-purpose injector - Google Patents
Internal and external dual-purpose injector Download PDFInfo
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- CN216125049U CN216125049U CN202120881150.3U CN202120881150U CN216125049U CN 216125049 U CN216125049 U CN 216125049U CN 202120881150 U CN202120881150 U CN 202120881150U CN 216125049 U CN216125049 U CN 216125049U
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- spraying
- gland
- push rod
- sealing plug
- suction pipe
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Abstract
The utility model provides an internal and external dual-purpose injector, which comprises a spraying assembly, a detachable folding cover, a barrel and a straw assembly, wherein the spraying assembly comprises a spraying gland, and the spraying gland is provided with a nozzle; a sealing plug in contact fit with the inner wall of the cylinder is arranged in the cylinder, the sealing plug is provided with a push rod, and the push rod is connected with the spraying assembly; the detachable folding cover is detachably connected with the spraying gland and the cylinder respectively; the suction pipe assembly comprises a connecting piece and a suction pipe arranged in the cylinder body, one end of the suction pipe penetrates through the sealing plug and extends into the cavity of the push rod, one end of the connecting piece is connected with the spraying gland, and the other end of the connecting piece is provided with a blind hole into which the suction pipe extends. The utility model can realize simultaneous injection of the internal and external wounded parts of a patient, effectively reduce the labor intensity of medical personnel, improve the injection efficiency before an operation and reduce the dosage of gauze and injection liquid in the injection process.
Description
Technical Field
The utility model belongs to the technical field of medical instruments, and particularly relates to an internal and external dual-purpose injector.
Background
When the human body is injected, the external injection and the internal injection are generally classified.
When the external injection is carried out, one mode is that iodine or alcohol is dipped through a cotton ball or gauze, the part to be injected of a patient is smeared, and when the injection is required for multiple times, a large amount of time is spent to uninterruptedly dip the iodine or alcohol to wipe the part to be injected, so that a certain physical strength and a large amount of time are spent in the injection process, and the injection efficiency is not high; and when the iodine tincture or alcohol is dipped in the cotton balls or the gauzes for injection, more iodine tincture or alcohol is remained on the cotton balls or the gauzes, and the cotton balls or the gauzes and the iodine tincture or alcohol are discarded after use, so that a large amount of cotton balls or gauzes and the iodine tincture or alcohol are wasted, and medical resources are excessively wasted.
When the injection is performed internally, the injection solution needs to be injected into a corresponding part, and an injection type injection method is generally adopted.
In the prior art, an injector with dual purposes of inside and outside is not available, so that the internal and external wounded parts of a patient can be injected simultaneously, the labor intensity of medical workers is effectively reduced, the injection efficiency before an operation is improved, and the using amounts of gauze and injection liquid in the injection process are reduced.
SUMMERY OF THE UTILITY MODEL
In view of the defects of the prior art, the utility model discloses an internal and external dual-purpose injector, which mainly aims to realize the combination of external injection and internal injection, realize the simultaneous injection of internal and external wounded parts of a patient under the condition of only using one injection instrument, effectively reduce the labor intensity of medical personnel, improve the injection efficiency before an operation and reduce the using amount of gauze and injection liquid in the injection process.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an internal and external dual-purpose injector, comprising:
the spraying assembly comprises a spraying gland, and the spraying gland is provided with a nozzle;
the spray cap comprises a barrel, wherein a sealing plug in contact fit with the inner wall of the barrel is arranged in the barrel, a sealing plug seat is arranged on the sealing plug, a push rod is arranged on the sealing plug, the push rod rebounds through a spring, and the push rod is connected with the spray gland;
the detachable folding cover is detachably connected with the spraying gland and the cylinder respectively;
the suction pipe assembly is sealed by a glass ball and comprises a connecting piece and a suction pipe arranged in the cylinder body, one end of the suction pipe penetrates through the sealing plug and extends into the cavity of the push rod, one end of the connecting piece is connected with the spraying gland, and the other end of the connecting piece is provided with a blind hole into which the suction pipe extends.
As a further description of the above technical solution:
the internal and external dual-purpose injector also comprises a sealing cover, and the sealing cover is in threaded sealing connection with the end part of the cylinder body.
As a further description of the above technical solution:
the spray assembly further includes a protective cap covering the spray gland.
As a further description of the above technical solution:
the detachable folding cover comprises two hinged semicircular covers, one sides of the two semicircular covers are hinged, and the other sides of the two semicircular covers are fastened.
As a further description of the above technical solution:
the detachable folding cover is fixedly clamped with the spraying gland and the barrel in the axial direction respectively.
As a further description of the above technical solution:
and a section of suction pipe extending into the blind hole of the connecting piece is positioned in the push rod.
As a further description of the above technical solution:
the sealing plug is an opening sealing plug, and an opening of the sealing plug is communicated with the cavity of the push rod.
As a further description of the above technical solution:
the cavity of the push rod is communicated with the cavity of the spray gland.
The utility model has the following beneficial effects:
the utility model realizes the combination of external injection and internal injection, can realize the simultaneous injection of the internal and external wounded parts of a patient under the condition of only using one injection instrument, effectively reduces the labor intensity of medical personnel, improves the injection efficiency before operation, and reduces the dosage of gauze and injection liquid in the injection process.
Drawings
FIG. 1 is a cross-sectional view of an internal and external dual-purpose injector according to the present invention;
FIG. 2 is a general schematic view of an internal and external dual-purpose injector according to the present invention;
fig. 3 is a schematic perspective view of an internal and external dual-purpose injector according to the present invention.
Reference numbers in the figures: 1-spraying component, 1-1-protective cover, 1-2-spraying gland, 1-3 extruding rod, 1-4 short spring, 1-5 small sealing plug, 1-6 long spring, 1-7 glass bead, 1-8 hollow tube, 2-folding cover, 3-push rod, 4-sealing plug, 5-cylinder, 6-sealing cover and 7-straw.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-3, the dual-purpose injector for both inside and outside comprises a spraying component 1, a cylinder body 5, a detachable folding cover 2 and a suction pipe 7.
In the embodiment, the spraying assembly 1 comprises a spraying gland 1-2, and the spraying gland 1-2 is provided with a nozzle; the spraying assembly 1 further comprises a protective cover 1-1 covering the spraying gland 1-2, the spraying assembly 1 further comprises a squeezing rod 1-3 and a hollow pipe 1-8 which are arranged in the spraying gland 1-2, the squeezing rod 1-3 extends into the hollow pipe 1-8, and the squeezing rod and the hollow pipe 1-8 are connected in a squeezing and sealing mode through a short spring 1-4 and a small sealing plug 1-5.
In the embodiment, a sealing plug 4 in contact fit with the inner wall of the cylinder 1 is arranged in the cylinder 1, the sealing plug 4 is provided with a push rod 3, and the push rod 3 is connected with the spraying assembly 1.
In the embodiment, the detachable folding cover 2 is detachably connected with the spraying gland 1-2 and the cylinder 5 respectively; specifically, the detachable folding cover 2 is respectively and fixedly clamped with the spraying gland 1-2 and the barrel 5 in the axial direction; the detachable folding cover 2 comprises two hinged semicircular covers, one sides of the two semicircular covers are hinged, and the other sides of the two semicircular covers are fastened.
In this embodiment, the straw assembly includes push rod 3, sealing plug 4, barrel 5 and sets up straw 7 in barrel 5, the one end of straw 7 passes sealing plug 4 and stretches into in the cavity of push rod 3, connecting piece one end is connected with spraying component 1, and the blind hole that straw 7 stretched into is seted up to its other end.
In the embodiment, the dual-purpose injector for both inside and outside further comprises a sealing cover 6, and the sealing cover 6 is in threaded sealing connection with the end part of the barrel 5.
In this embodiment, a section of the suction pipe 7 extending into the blind hole of the connector is positioned in the push rod 3; the sealing plug 4 is connected with the push rod 3, so that when the push rod 3 moves rightwards, the cavity of the cylinder body is opened outwards, and when the push rod moves leftwards, the sealing cover is screwed tightly to seal the cavity of the cylinder body 5; the spraying assembly 1 further comprises long springs 1-6 and glass beads 1-7, the glass beads 1-7 are arranged at one end of the suction pipe 7 and used for sealing the suction pipe 7, and the glass beads 1-7 are connected with the spraying assembly 1 in a compression mode through the long springs 1-6.
For external application, the spray is used, as shown in FIG. 1. At this time, the sealing cover 6 is screwed to prevent leakage. Taking down the protective cover 1-1, pressing the spray gland 1-2, pressing the short spring 1-4, pressing the long spring 1-6, sealing the hollow tube 1-8 by the glass bead 1-7, loosening the spray gland 1-2, rebounding the short spring 1-4, rebounding the long spring 1-6, making the glass bead 1-7 unable to seal the hollow tube 1-8, sucking the injection liquid from the suction tube 7 into the hollow tube 1-8 from the inner cavity of the cylinder 5 due to the negative pressure, flowing into the inner cavity of the spray gland 1-2 through the extrusion rod 1-3, and then spraying out from the nozzle, thus completing the external spray type injection.
For internal use, injection is used, as shown in fig. 2. At the moment, the folding cover 2 and the sealing cover 6 are taken down, the whole device forms an injector, when the injector is used, the forefinger and the middle finger respectively hook a disc at the rear end of the cylinder 5, the thumb pushes the spraying component 1, and the spraying liquid is injected out from the inner cavity of the cylinder 5 along the front end, so that the inner injection is completed.
The working principle of the nozzle is explained by analyzing the mechanical structure by using the knowledge of fluid statics and fluid dynamics. In theoretical analysis, it is believed that the liquid is an incompressible fluid and that the volume of the liquid does not change with pressure at a constant temperature. At constant temperature, the gas is a compressible fluid, and when the pressure of the gas is increased, the volume of the gas is reduced.
1. Principle of water absorption
1) And (3) an exhaust process:
assuming an initial state, there is no liquid in the barrel cavity. Pressing down the spray gland 1-2, pressing down the short spring 1-4, pressing down the long spring 1-6, sealing the hollow tube 1-8 with the glass bead 1-7, and escaping the gas in the hollow tube 1-8 through the extrusion rod 1-3 and the spray gland 1-2 nozzles.
2) Liquid suction process:
after exhausting, the spraying gland 1-2 is loosened, the short spring 1-4 rebounds, the long spring 1-6 rebounds, the glass bead 1-7 cannot seal the hollow tube 1-8, the air pressure is reduced and is similar to vacuum due to the increase of the volume of the internal cavity of the hollow tube 1-8, the injection liquid is sucked into the internal cavity of the hollow tube 1-8 from the suction tube 7 from the internal cavity of the cylinder 5 under the action of negative pressure and flows into the internal cavity of the spraying gland 1-2 through the internal part of the extrusion rod 1-3, and the liquid suction process is completed.
3) Liquid outlet process: the principle is the same as the exhaust process. In contrast, the cavity of the barrel 5 is now filled with liquid. When the spray gland 1-2 is pressed down, on one hand, the long spring 1-6 compresses the glass bead 1-7, and the glass bead 1-7 seals the inner cavity of the hollow tube 1-8 to prevent the liquid from returning to the inner cavity of the cylinder 5 from the suction tube 7; on the other hand, as the liquid (incompressible fluid) is extruded, the liquid will break the gap between the short spring 1-4, the small sealing plug 1-5 and the extrusion stem 1-3, flow into the inner cavity of the extrusion stem 1-3, enter the hollow cavity of the spray gland 1-2 from the extrusion stem 1-3 and exit from the nozzle.
2. Principle of atomization
From the continuity equation in fluid dynamics, when the fluid enters the cavity of the spray gland 1-2 from the push rod 3 and is sprayed out from the small-hole nozzle, because the liquid is incompressible fluid, through the qualitative analysis by applying the continuity equation, it can be seen that, because the nozzle opening is small, if the pressing is smooth (i.e. a certain flow velocity exists in the push rod 3), when the liquid flows out from the small hole, the flow velocity of the liquid is large, that is, the air has a large flow velocity relative to the liquid, which is equivalent to the problem that the water drops are impacted by the high-speed air flow. The air impacts the large water drops into small water drops, and the water drops are refined step by step.
Meanwhile, the liquid flowing at high speed can also drive the gas near the nozzle opening to flow, so that the speed of the gas near the nozzle opening is increased, the pressure is reduced, and a local negative pressure area is formed. Therefore, ambient air is mixed into the liquid to form a gas-liquid mixture, so that the liquid generates an atomization effect.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.
Claims (8)
1. An internal and external dual-purpose injector, comprising:
the spraying assembly comprises a spraying gland, and the spraying gland is provided with a nozzle;
the spray device comprises a cylinder body, wherein a sealing plug in contact fit with the inner wall of the cylinder body is arranged in the cylinder body, the sealing plug is provided with a push rod, and the push rod is connected with a spray assembly;
the detachable folding cover is detachably connected with the spraying gland and the cylinder respectively;
and the suction pipe assembly comprises a connecting piece and a suction pipe arranged in the cylinder body, one end of the suction pipe penetrates through the sealing plug and extends into the cavity of the push rod, one end of the connecting piece is connected with the spraying gland, and the other end of the connecting piece is provided with a blind hole into which the suction pipe extends.
2. The dual use inner and outer injector according to claim 1, further comprising a sealing cap in threaded sealing engagement with the barrel end.
3. The dual use internal and external injector of claim 1, wherein said spray assembly further comprises a protective cap covering said spray gland.
4. The dual use internal and external injector according to claim 1, wherein said detachable folding cap comprises two hinged half-domes hinged on one side and fastened on the other side.
5. The dual use internal and external injector according to claim 4, wherein said detachable folding cap is axially and fixedly engaged with the spray gland and the barrel, respectively.
6. The dual use internal and external injector according to claim 1, wherein a section of the suction tube extending into the blind hole of the connector is located within the push rod.
7. The dual use internal and external injector according to claim 1, wherein said sealing plug is an open sealing plug, the opening of said sealing plug communicating with the cavity of the push rod.
8. The dual use internal and external injector according to claim 1, wherein the cavity of said push rod is in communication with the cavity of the spray gland.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120881150.3U CN216125049U (en) | 2021-04-27 | 2021-04-27 | Internal and external dual-purpose injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120881150.3U CN216125049U (en) | 2021-04-27 | 2021-04-27 | Internal and external dual-purpose injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216125049U true CN216125049U (en) | 2022-03-25 |
Family
ID=80765321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120881150.3U Active CN216125049U (en) | 2021-04-27 | 2021-04-27 | Internal and external dual-purpose injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216125049U (en) |
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2021
- 2021-04-27 CN CN202120881150.3U patent/CN216125049U/en active Active
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