CN107029318A - Disposable medical fluid injector - Google Patents
Disposable medical fluid injector Download PDFInfo
- Publication number
- CN107029318A CN107029318A CN201710406993.6A CN201710406993A CN107029318A CN 107029318 A CN107029318 A CN 107029318A CN 201710406993 A CN201710406993 A CN 201710406993A CN 107029318 A CN107029318 A CN 107029318A
- Authority
- CN
- China
- Prior art keywords
- tube
- injection
- medical fluid
- fluid injector
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31501—Means for blocking or restricting the movement of the rod or piston
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/50—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
- A61M5/508—Means for preventing re-use by disrupting the piston seal, e.g. by puncturing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
- A61M2005/31516—Piston or piston-rod constructions, e.g. connection of piston with piston-rod reducing dead-space in the syringe barrel after delivery
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention provides a kind of disposable medical fluid injector, including：Needle section, it has syringe needle pedestal and the puncture needle being connected on the syringe needle pedestal；Injection-tube, its front end is connected with the syringe needle pedestal, and the injection-tube has the annular seal space for holding decoction；Propeller, it has occupying device and the propulsion assembly being connected with the occupying device, and the occupying device has the front end male part that can be adapted with the front inner wall of the injection-tube, and the occupying device is sealingly disposed in the annular seal space；The occupying device can be moved in the presence of the propulsion assembly from the rear end of the annular seal space to the front end of the annular seal space, until the front end male part is resisted against the front inner wall of the injection-tube；Closure, it is sealedly connected on the rear end of the injection-tube.The disposable medical fluid injector of the present invention, ensure that the decoction in it is all injected and uses, its is simple in construction, easy to operate.
Description
Technical field
The present invention is related to a kind of syringe, more particularly to the disposable liquid medicine injection applied in a kind of medical instruments field
Emitter.
Background technology
In the past, decoction often was contained using ampoule bottle in medical field, its capacity is generally 1ml~25ml.Ampoule bottle is because of it
Good airproof performance, is usually used in the packaging of injection decoction and oral liquid, but ampoule bottle has unlatching due to itself material and is stranded
Easily there is the problem of chip is fallen into bottle after difficulty, and unlatching；In addition, with ordinary syringe extract ampoule bottle in decoction it
Before, there is also the contaminated possibility of decoction.
The disposable encapsulated injector used at present integrates storage and function of injection, effectively prevent chip pollution medicine
The contaminated problem of decoction that liquid and decoction expose and existed.The disposable encapsulated injector it is main by be sequentially connected syringe needle,
Protecting pipe and the propulsion tube composition for containing decoction, the propulsion tube is in corrugated tube shape, and it can be compressed axially, when being injected
When, syringe needle can puncture protecting pipe, the direction of backward syringe needle compress propulsion tube, the decoction in propulsion tube is squeezed out so as to reach
The purpose of syringe needle.
The disposable encapsulated injector also has the following disadvantages：
1) because also having one section of protecting pipe to exist between the inner chamber of propulsion tube and syringe needle, after propulsion tube is fully compressed, in it
Decoction can not completely from syringe needle project, the problem of there is liquid waste；
2) when injecting, because propulsion tube is made of plastic material, with certain pliability, to syringe needle side
During propulsion tube is compressed, the problem of there is double swerve in propulsion tube, needle position is unstable when causing to inject, to patient
Bring pain.
Therefore, it is necessary to a kind of new syringe be provided, to overcome above mentioned problem.
The content of the invention
It is an object of the invention to provide a kind of disposable medical fluid injector, ensure that the decoction in it is all injected makes
With its is simple in construction, easy to operate.
The above-mentioned purpose of the present invention can be realized using following technical proposal：
The present invention provides a kind of disposable medical fluid injector, including：
Needle section, it has syringe needle pedestal and the puncture needle being connected on the syringe needle pedestal；
Injection-tube, its front end is connected with the syringe needle pedestal, and the injection-tube has the annular seal space for holding decoction；
Propeller, it has occupying device and the propulsion assembly being connected with the occupying device, and the occupying device has can be with institute
The front end male part that the front inner wall of injection-tube is adapted is stated, the occupying device is sealingly disposed in the annular seal space；It is described to account for
Position device can be moved in the presence of the propulsion assembly from the rear end of the annular seal space to the front end of the annular seal space, until described
Front end male part is resisted against the front inner wall of the injection-tube；
Closure, it is sealedly connected on the rear end of the injection-tube.
In embodiments of the present invention, the occupying device also have back-end sealing portion, the back-end sealing portion with it is described
Front end male part is connected, and the propulsion assembly is connected to the back-end sealing portion.
In embodiments of the present invention, the outer wall in the back-end sealing portion scrapes cutting members provided with sealing, and the sealing is scraped
The external diameter of cutting members is more than the external diameter in the back-end sealing portion.
In embodiments of the present invention, to scrape cutting members close by being set in multiple tracks on the outside of the back-end sealing portion for the sealing
Seal is constituted.
In embodiments of the present invention, the sealing scrapes cutting members by the sealing ring that is set on the outside of the back-end sealing portion
And multiple ring convex ribs composition of the projection on the sealing ring.
In embodiments of the present invention, the propulsion assembly includes propulsion tube and the push rod in the propulsion tube,
The push rod can be connected in the propulsion tube, and the front end of the propulsion tube is connected with the occupying device.
In embodiments of the present invention, the side wall of the propulsion tube is provided with clamping recess, and the front end of the push rod is set
There is clamping convex portion, in the state of being engaged in the clamping convex portion with the clamping recess, the push rod is connected in the propulsion
Pipe.
In embodiments of the present invention, in the state of the seal cap sealing is connected to the rear end of the injection-tube,
One end of the push rod is located in the propulsion tube, and its other end is located in the closure.
In embodiments of the present invention, the propulsion assembly is located in the closure；Or, the propulsion assembly
One end is located in the injection-tube, and its other end is located in the closure.
In embodiments of the present invention, the front end male part of the occupying device be shaped as cone cylinder body shape, hemispherical or
Cone shape.
In embodiments of the present invention, the rear end of the syringe needle pedestal is provided with adapter sleeve, the adapter sleeve provided with interior
Thread segment, the front end of the injection-tube is provided with connector, and the outer wall of the connector is provided with external thread section, the internal thread segment with
The external thread section bolt.
In embodiments of the present invention, the length of the external thread section is more than the length of the internal thread segment.
In embodiments of the present invention, the adapter sleeve has roof, and the front end of the internal thread segment is apart from the top
Wall has one to puncture distance, and the rear end of the puncture needle is located in the adapter sleeve, diaphragm seal is provided with the connector, described
Adapter sleeve is connected in the state of the connector, and the puncture needle is located at the outside of the diaphragm seal.
In embodiments of the present invention, in the state of the front end face of the roof and the connector is abutted against, institute
State diaphragm seal described in needle pierces.
In embodiments of the present invention, the annular seal space is by the diaphragm seal, the occupying device and the injection-tube
Tube wall, which encloses, to be set to be formed.
In embodiments of the present invention, the closure include sealing flange and be removably attachable to it is described sealing it is convex
The seal sleeve of edge, the sealing flange is welded to connect in the rear end of the injection-tube.
In embodiments of the present invention, it is provided between the seal sleeve and the sealing flange and easily tears portion.
The characteristics of disposable medical fluid injector of the present invention and advantage are：Disposable medical fluid injector collection storage decoction and
Integral design is injected, the free of contamination purpose of the decoction before use can be realized, and is easy to deposit and takes and use.In addition, this one
The front end male part for the occupying device that secondary property medical fluid injector passes through propeller, can be achieved to be adapted with the front inner wall of injection-tube to connect
Touch, so as to ensure that occupying device completely can push out the decoction in injection-tube, it is to avoid the situation for wasting decoction occurs.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the three-dimensional structure diagram of the disposable medical fluid injector of the present invention.
Fig. 2 is the three-dimensional cutaway view of the use state one of the disposable medical fluid injector of the present invention.
Fig. 3 is the three-dimensional cutaway view of the use state two of the disposable medical fluid injector of the present invention.
Fig. 4 is the three-dimensional structure diagram of the needle section of the present invention.
Fig. 5 is the front view of the needle section of the present invention.
Fig. 6 is the front sectional view of the needle section of the present invention.
Fig. 7 is the three-dimensional structure diagram of the injection-tube of the present invention.
Fig. 8 is the front view of the injection-tube of the present invention.
Fig. 9 is the three-dimensional structure diagram of the occupying device of the present invention.
Figure 10 is the front sectional view of the occupying device of the present invention.
Figure 11 is the side view of the occupying device of the present invention.
Figure 12 is the three-dimensional structure diagram of the embodiment one of the propulsion tube of the present invention.
Figure 13 is the sectional view of the embodiment one of the propulsion tube of the present invention.
Figure 14 is the three-dimensional structure diagram of the embodiment two of the propulsion tube of the present invention.
Figure 15 is the sectional view of the embodiment two of the propulsion tube of the present invention.
Figure 16 is the three-dimensional structure diagram of the embodiment one of the push rod of the present invention.
Figure 17 is the sectional view of the embodiment one of the push rod of the present invention.
Figure 18 is the three-dimensional structure diagram of the embodiment two of the push rod of the present invention.
Figure 19 is the sectional view of the embodiment two of the push rod of the present invention.
Figure 20 is the front sectional view of the use state two of another embodiment of the disposable medical fluid injector of the present invention, should
Closure is eliminated in figure.
Figure 21 is the three-dimensional structure diagram of the closure of the present invention.
Figure 22 is the side view of the closure of the present invention.
Figure 23 is the front sectional view of the closure of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As shown in Figure 1 to Figure 3, the present invention provides a kind of disposable medical fluid injector, including needle section 1, injection-tube 2, pushes away
Enter device 3 and closure 4, wherein：Needle section 1 has syringe needle pedestal 11 and the puncture needle 12 being connected on the syringe needle pedestal 11；
The front end 21 of injection-tube 2 is connected with the syringe needle pedestal 11, and the injection-tube 2 has the annular seal space 22 for holding decoction；Propeller 3
The propulsion assembly 32 being connected with occupying device 31 and with the occupying device 31, the occupying device 31 has can be with the injection-tube 2
The front end male part 311 that is adapted of front inner wall 24, the occupying device 31 is sealingly disposed in the annular seal space 22；It is described to account for
Position device 31 can be moved in the presence of the propulsion assembly 32 from the rear end of the annular seal space 22 to the front end of the annular seal space 22,
Until the front end male part 311 is resisted against the front inner wall 24 of the injection-tube 2；Closure 4 is sealedly connected on the injection
The rear end 23 of pipe 2.
The disposable medical fluid injector collection storage decoction and injection Integral design of the present invention, can realize the decoction before use
Free of contamination purpose, and be easy to deposit and take and use.In addition, the occupying device that the disposable medical fluid injector passes through propeller 3
31 front end male part 311, can be achieved to be adapted with the front inner wall 24 of injection-tube 2 to contact, so as to ensure that the energy of occupying device 31
It is enough completely to push out the decoction in injection-tube 2, it is to avoid the situation for wasting decoction occurs.
Specifically, as shown in Figures 4 to 6, needle section 1 is by syringe needle pedestal 11 and the puncture needle being located on syringe needle pedestal 11
12 compositions, puncture needle 12 has injection front end 121 and punctures rear end 122, injection front end 121 and punctures rear end 122 and is respectively provided with point
Sharp head, is easy to be pierced into.In the present embodiment, the rear end of syringe needle pedestal 11 extends to form adapter sleeve 111, the adapter sleeve 111 it is interior
Wall is provided with internal thread segment 112, and the adapter sleeve 111 has roof 113, and the front end of internal thread segment 112 has one apart from the roof 113
Puncture apart from d, the rear end 122 that punctures of puncture needle 12 is located in the adapter sleeve 111, and can slightly stretch out outside adapter sleeve 111.
In the present invention, the syringe needle pedestal 11 and adapter sleeve 111 are integrally formed, and in syringe needle pedestal 11 and adapter sleeve 111
Outer wall on along the circumferential direction at equal intervals be provided with multiple convex tendons 114, those convex tendons 114 be easy to human hand grip use；Further,
Protective case (not shown) can be arranged with the injection front end 121 of puncture needle 12, in order to effectively protect puncture when being not used
Pin 12, it is to avoid accidentally injure or the situation of pollution occurs.
As shown in Fig. 7 to Fig. 8, injection-tube 2 is substantially in cylindrical or the cylindroid bodily form, and its front end 21 is provided with connector
25, the outer wall of the connector 25 is provided with external thread section 251, and the adapter sleeve 111 of needle section 1 passes through its internal thread segment 112 and this
The bolt of external thread section 251, can be achieved the purpose being connected with the front end 21 of injection-tube 2.In the present invention, the connector 25 has
There is the passage 253 being connected with the annular seal space 22 of injection-tube 2, diaphragm seal 252 is provided with the passage 253, the diaphragm seal 252 is used for
Decoction in the annular seal space 22 of sealing injection pipe 2.
In the present invention, the length of the external thread section 251 is more than the length of internal thread segment 112, before use, needle section 1
Only formed and be spirally connected completely by the external thread section 251 of its internal thread segment 112 and connector 25, in this case, needle section 1
The rear end 122 that punctures of puncture needle 12 stretch into the diaphragm seal 252 in the passage 253 of connector 25 and being located exactly in connector 25
Top without piercing through the diaphragm seal 252, that is, in the state of adapter sleeve 111 is connected to connector 25, the puncture needle 12
Positioned at the outside of diaphragm seal 252；After continuing to screw in adapter sleeve 111 to the direction of injection-tube 2, until the top of the adapter sleeve 111
The front end face of wall 113 and connector 25 is abutted against, in this case, and the puncture needle 12 punctures rear end 122 and can pierce through diaphragm seal
252, and the annular seal space 22 of injection-tube 2 is connected with the formation of injection canal 123 of puncture needle 12.
In the present invention, the external diameter of the connector 25 is less than the external diameter of injection-tube 2, so that in connector 25 and injection-tube 2
Between form a necking part 26, the internal perisporium of the necking part 26 namely the front inner wall 24 of injection-tube 2.In the present embodiment, should
The shape of the shape of front inner wall 24 and the front end male part 311 of the occupying device 31 of propeller 3 matches, so as to ensure to account for
Position device 31 completely can push out the decoction in injection-tube 2, it is to avoid waste decoction.Further, the rear end of the injection-tube 2
23 are radially outward convexly equipped with outer peripheral edge 27, in order to promote during propeller 3, facilitate human hand to grip and use.
Propeller 3 is arranged on the rear end 23 of injection-tube 2, and it has occupying device 31 and the propulsion assembly being connected with occupying device 31
32, wherein occupying device 31 is located in annular seal space 22, and the annular seal space 22 is enclosed by the tube wall of diaphragm seal 252, occupying device 31 and injection-tube 2
If being formed.Please refer to shown in Fig. 9 to Figure 11, the occupying device 31 has front end male part 311, the energy of front end male part 311
Coordinate with the front inner wall 24 of injection-tube 2 and recline, to ensure that the decoction in injection-tube 2 can be pushed out by occupying device 31 completely
Go；In the present embodiment, the shape of the front end male part 311 of occupying device 31 can be cone cylinder body shape, hemispherical or cone shape.Enter
One step, the occupying device 31 also has back-end sealing portion 312, and the back-end sealing portion 312 is connected with front end male part 311, at this
In embodiment, back-end sealing portion 312 is integrally formed with front end male part 311, and the propulsion assembly 32 is connected to back-end sealing portion
312.Can be solid construction, or be alternatively by the integrally formed occupying device 31 of front end male part 311 and back-end sealing portion 312
Hollow-core construction, can so save material.
In the present invention, the outer wall in the back-end sealing portion 312 scrapes cutting members 313 provided with sealing, and cutting members 313 is scraped in the sealing
External diameter is more than the external diameter in the back-end sealing portion 312, and cutting members 313 is scraped in the sealing is used for the annular seal space 22 of sealing injection pipe 2, simultaneously
It is moved in the rear end of the self sealss chamber 22 of occupying device 31 in the state of the front end of annular seal space 22, the sealing is scraped cutting members 313 and can also risen
To the effect of the inwall of scraping injection-tube 2, the decoction further ensured in injection-tube 2 is all extruded away.
In a possible embodiments, cutting members 313 is scraped in the sealing can be by being set in the multiple-sealed of the outside of back-end sealing portion 312
Circle composition；Or, as shown in Figures 9 to 11, in another possible embodiments, cutting members 313 is scraped in the sealing can be by being set in rear end
Multiple ring convex ribs 3132 of the sealing ring 3131 and projection in the outside of sealing 312 on sealing ring 3131 are constituted, such as in rear end
Annular groove 3121 can be provided with the outer wall of sealing 312, the sealing ring 3131 is embedded in the annular groove 3121.Those sealing rings or ring
Fin 3132 can not only play a part of the annular seal space 22 of sealing injection pipe 2, and it can also make occupying device 31 in injection-tube 2
Annular seal space 22 in from the rear end 23 of injection-tube 2 to its front end 21 move during, play the work of the inwall of scraping injection-tube 2
With so that the decoction in injection-tube 2 is adequately compressed out.
The propulsion assembly 32 of propeller 3 includes propulsion tube 321 and the push rod 322 in propulsion tube 321, the push rod 322
Propulsion tube 321 can be connected in, the front end of the propulsion tube 321 is connected with occupying device 31.In the present invention, the side wall of propulsion tube 321
Clamping recess 3211 is provided with, the front end of push rod 322 is provided with clamping convex portion 3221, in clamping convex portion 3221 and clamping recess 3211
In the state of being engaged, push rod 322 is connected in propulsion tube 321.
Specifically, in a possible embodiments, as shown in Figure 12 and Figure 13, propulsion tube 321 is substantially in cuboid, and it has
There is the internal channel 3212 of cuboid, the internal channel 3212 is used to place substantially the pushing away in cuboid shown in Figure 16 and Figure 17
Bar 322, clamping recess 3211 is respectively equipped with the relative two side of propulsion tube 321, and the clamping recess 3211 can be to be arranged on
Through hole on the relative two side of propulsion tube 321, further, can be provided with clamping block 3213, the card in clamping recess 3211
Connect block 3213 to set towards the projection of internal channel 3212, in order to the clamping convex portion with the front end of push rod 322 shown in Figure 16 and Figure 17
3221 are clasped, and the clamping convex portion 3221 is rectangular flange of the projection in the front end of push rod 322；Further, in the embodiment
Push rod 322 rear end can integrally formed with holding rod 3222, be easy to human hand grip use.In addition, the front end of the propulsion tube 321
Outward flange 3214 can be provided with, the outward flange 3214 can be annular flange, and it is used to be connected with occupying device 31.
In another possible embodiments, as shown in Figure 14 and Figure 15, propulsion tube 321 is substantially in cylinder barrel shaped, and it has circle
The internal channel 3212 of tubular, the internal channel 3212 be used for place shown in Figure 18 and Figure 19 substantially be in cylinder barrel shaped push rod
322, clamping recess 3211 is respectively equipped with the side wall of propulsion tube 321 diametrically, the clamping recess 3211 can be to be arranged on
Through hole on the side wall of propulsion tube 321 diametrically, further, can be provided with clamping block 3213 in clamping recess 3211, should
Clamping block 3213 is set towards the projection of internal channel 3212, in order to which the clamping with the front end of push rod 322 shown in Figure 18 and Figure 19 is convex
Portion 3221 is clasped, and the clamping convex portion 3221 is annular flange of the projection in the front end of push rod 322；Further, the embodiment
In push rod 322 rear end can integrally formed with holding rod 3222, be easy to human hand grip use.In addition, before the propulsion tube 321
End can be provided with outward flange 3214, and the outward flange 3214 can be annular flange, and it is used to be connected with occupying device 31.
In the present invention, when closure 4 is sealedly connected on the rear end 23 of injection-tube 2, one end of the push rod 322, which is located at, to push away
In inlet pipe 321, its other end is located in closure 4.Further, as shown in figure 20, the propulsion assembly 32 is located at closure 4
Interior, that is, before use, only occupying device 31 is located in injection-tube 2, and to be located at injection-tube 2 outer and positioned at close for propulsion assembly 32
In capping 4；Or, in a further embodiment, please refer to shown in Fig. 2, one end of the propulsion assembly 32 is located at injection-tube 2
Interior, its other end is located in closure 4, that is, before use, the front end of the propulsion tube 321 of occupying device 31 and propulsion assembly 32
It is respectively positioned in injection-tube 2, and the rear end of the propulsion tube 321 of propulsion assembly 32 and push rod 322 are respectively positioned on outside injection-tube 2 and are located at
In closure 4.
As shown in Figure 21 to Figure 23, the closure 4 includes sealing flange 41 and is removably attachable to sealing flange 41
Seal sleeve 42, the sealing flange 41 is welded to connect in the rear end 23 of injection-tube 2.
Specifically, the substantially circular in configuration of sealing flange 41, it is welded to connect in the outer peripheral edge 27 of the rear end 23 of injection-tube 2
On；Seal sleeve 42 is substantially in cylinder barrel shaped, and it has the inner chamber 421 for holding propulsion assembly 32, in the present embodiment, the sealing
Provided with easily portion 43 is torn between sleeve 42 and sealing flange 41, portion 43 is easily torn by this, the seal sleeve 42 can removably connect
Sealing flange 41 is connected to, this easily tears the substantially banding in a ring of portion 43, and its both sides is connected to sealing flange 41 and seal sleeve
42, this easily tears can be connected between the both sides in portion 43 and sealing flange 41 and seal sleeve 42 using continuous annular thin wall, or
Person can be provided with the groove of multiple interruptions easily tearing between the both sides in portion 43 and sealing flange 41 and seal sleeve 42, in order to easily tear
Torn between sealing flange 41 and seal sleeve 42 in portion 43；Further, this, which easily tears to be additionally provided with portion 43, tears handle 431, leads to
Cross holding and tear handle 431, and pulled to the direction away from closure 4, thus can realize will easily tear the self sealss sleeve 42 of portion 43 with
The purpose pulled open between sealing flange 41.
Several embodiments of the present invention are the foregoing is only, those skilled in the art is according to application documents disclosure
Various changes or modification can be carried out to the embodiment of the present invention without departing from the spirit and scope of the present invention.
Claims (17)
1. a kind of disposable medical fluid injector, it is characterised in that including：
Needle section, it has syringe needle pedestal and the puncture needle being connected on the syringe needle pedestal；
Injection-tube, its front end is connected with the syringe needle pedestal, and the injection-tube has the annular seal space for holding decoction；
Propeller, it has occupying device and the propulsion assembly being connected with the occupying device, and the occupying device has can be with the note
The front end male part that the front inner wall of pipe is adapted is penetrated, the occupying device is sealingly disposed in the annular seal space；The occupying device
It can be moved in the presence of the propulsion assembly from the rear end of the annular seal space to the front end of the annular seal space, until the front end
Male part is resisted against the front inner wall of the injection-tube；
Closure, it is sealedly connected on the rear end of the injection-tube.
2. disposable medical fluid injector as claimed in claim 1, it is characterised in that the occupying device also has back-end sealing
Portion, the back-end sealing portion is connected with the front end male part, and the propulsion assembly is connected to the back-end sealing portion.
3. disposable medical fluid injector as claimed in claim 2, it is characterised in that the outer wall in the back-end sealing portion is provided with
Cutting members is scraped in sealing, and external diameter of the external diameter more than the back-end sealing portion of cutting members is scraped in the sealing.
4. disposable medical fluid injector as claimed in claim 3, it is characterised in that it is described by being set in that cutting members is scraped in the sealing
Multiple-sealed circle composition on the outside of back-end sealing portion.
5. disposable medical fluid injector as claimed in claim 3, it is characterised in that it is described by being set in that cutting members is scraped in the sealing
The multiple ring convex ribs composition of sealing ring and projection on the sealing ring on the outside of back-end sealing portion.
6. disposable medical fluid injector as claimed in claim 1, it is characterised in that the propulsion assembly includes propulsion tube and position
Push rod in the propulsion tube, the push rod can be connected in the propulsion tube, the front end of the propulsion tube and the occupying device
It is connected.
7. disposable medical fluid injector as claimed in claim 6, it is characterised in that the side wall of the propulsion tube is provided with clamping
Recess, the front end of the push rod is provided with clamping convex portion, in the state of being engaged in the clamping convex portion with the clamping recess, institute
State push rod and be connected in the propulsion tube.
8. disposable medical fluid injector as claimed in claim 6, it is characterised in that be connected in the seal cap sealing described
In the state of the rear end of injection-tube, one end of the push rod is located in the propulsion tube, and its other end is located in the closure.
9. disposable medical fluid injector as claimed in claim 6, it is characterised in that the propulsion assembly is located at the closure
It is interior；Or, one end of the propulsion assembly is located in the injection-tube, and its other end is located in the closure.
10. disposable medical fluid injector as claimed in claim 1, it is characterised in that the front end male part of the occupying device
It is shaped as cone cylinder body shape, hemispherical or cone shape.
11. disposable medical fluid injector as claimed in claim 1, it is characterised in that the rear end of the syringe needle pedestal is provided with company
Internal thread segment is provided with female connector, the adapter sleeve, the front end of the injection-tube is provided with connector, and the outer wall of the connector is provided with
External thread section, the internal thread segment and the external thread section bolt.
12. disposable medical fluid injector as claimed in claim 11, it is characterised in that the length of the external thread section is more than institute
State the length of internal thread segment.
13. disposable medical fluid injector as claimed in claim 11, it is characterised in that the adapter sleeve has roof, described
The front end of internal thread segment has one to puncture distance apart from the roof, and the rear end of the puncture needle is located in the adapter sleeve, described
Diaphragm seal is provided with connector, in the state of the adapter sleeve is connected to the connector, the puncture needle is located at described close
The outside of sealer.
14. disposable medical fluid injector as claimed in claim 13, it is characterised in that in the roof and the connector
In the state of front end face is abutted against, diaphragm seal described in the needle pierces.
15. medical fluid injector as claimed in claim 13 disposable, it is characterised in that the annular seal space by the diaphragm seal,
The tube wall of the occupying device and the injection-tube, which encloses, to be set to be formed.
16. medical fluid injector as claimed in claim 1 disposable, it is characterised in that the closure include sealing flange and
The seal sleeve of the sealing flange is removably attachable to, the sealing flange is welded to connect in the rear end of the injection-tube.
17. disposable medical fluid injector as claimed in claim 16, it is characterised in that the seal sleeve and the sealing are convex
It is provided between edge and easily tears portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710406993.6A CN107029318A (en) | 2017-06-02 | 2017-06-02 | Disposable medical fluid injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710406993.6A CN107029318A (en) | 2017-06-02 | 2017-06-02 | Disposable medical fluid injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107029318A true CN107029318A (en) | 2017-08-11 |
Family
ID=59539617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710406993.6A Pending CN107029318A (en) | 2017-06-02 | 2017-06-02 | Disposable medical fluid injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107029318A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111408033A (en) * | 2020-03-05 | 2020-07-14 | 优微（珠海）生物科技有限公司 | Beauty fluid introducing device and using method thereof |
| CN111450355A (en) * | 2020-03-23 | 2020-07-28 | 中国人民解放军海军军医大学 | Needle-prick-proof syringe capable of being preloaded with medicine |
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