CN104436364B - A kind of safety self-destructing intravenous infusion needle - Google Patents
A kind of safety self-destructing intravenous infusion needle Download PDFInfo
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- CN104436364B CN104436364B CN201410787413.9A CN201410787413A CN104436364B CN 104436364 B CN104436364 B CN 104436364B CN 201410787413 A CN201410787413 A CN 201410787413A CN 104436364 B CN104436364 B CN 104436364B
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- 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
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
-
- 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
- A61M5/5086—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 for indicating if defective, used, tampered with or unsterile
-
- 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
- A61M2202/00—Special media to be introduced, removed or treated
- A61M2202/0007—Special media to be introduced, removed or treated introduced into the body
-
- 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
- A61M2202/00—Special media to be introduced, removed or treated
- A61M2202/04—Liquids
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- 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 present invention relates to a kind of safety self-destructing intravenous infusion needle, its self-destruction plug is integrally formed with needle stand, it is small to be axially facing needle stand one end that self-destruction plug is connected one end end with needle stand, the big taper of the other end, the self-destruction plug positioning shrinkage cavity of correspondence self-destruction plug transfusion end one end is set in protection pipe tube chamber, self-destruction plug positions shrinkage cavity and forms limited step with the protection pipe tube chamber place of being bordered by, needle stand is provided with the positioning shaft part that can be slipped into the positioning shrinkage cavity of self-destruction plug, position shaft part external diameter, axial length is adapted with the positioning shrinkage cavity of self-destruction plug, position fracture end face of the shaft part end face for connection self-destruction plug tapering point, fracture and be shaped as annular incision of triangle between end face and self-destruction plug through tapering point Formation cross-section, position the shaft part other end raised provided with annular stop, annular stop projection can slip into protection pipe tube chamber and with limited step is spacing coordinates.The present invention has simple in construction, easy to process, good, the safe and reliable advantage of operation continuity.
Description
Technical field
It is a kind of safety self-destructing venous transfusion that can only be disposable the present invention relates to technical field of medical instruments
Pin.
Background technology
Since last century Mo, society and technology due to, dangerous transfusion oneself turn into the various infectiousness diseases of the mankind
One of main path of sick cross transmission, seriously jeopardizes human health.Safe infusion is realized comprehensively, oneself, which turns into, ensures health of masses
Important step.
According to the definition of the World Health Organization, so-called safe infusion should include the content of three aspects：One is to receiving
Transfusion person is harmless；Two be not constitute any danger to health care personnel；Three be to infuse the discarded object produced not to composition of society
Harm.This requires transfusion needle to possess corresponding security feature：
1st, after transfusion needle is used once, its original function is lost.This feature can technically ensure to receive transfusion person not by
Its reuse is endangered.
2nd, after transfusion needle is used once, its exposed needle point is concealed.This feature can technically ensure discarded transfusion needle to ring
Border is not polluted, and the danger such as needle stick injury and cross-infection are not constituted to health care and other staff.
3rd, after transfusion needle is used once, its original function is lost and exposed needle point conceals automatic realization in the lump.This feature can
Overcome the uncertainty manually controlled, particularly can thoroughly prevent the hair of the various dangerous transfusion conditions caused by intentional act
It is raw.
With the raising of awareness of safety, and after corresponding regulation and instruction appearance, for the transfusion with puncture needle
Equipment, such as injection needle tube, intravenous infusion needle, various safe self-destroying function structures are employed and improved.It is existing defeated for vein
Liquid pin, its self-destroying function structure is：Needle tubing will be punctured to be arranged to activity and can bounce back in needle stand, it has been used in intravenous infusion needle
Afterwards, bounced back to by operation part so that puncturing needle tubing in needle stand, exposed needle point is concealed, and prevents puncture needle by backing stop structure
Pipe resets；So as to reach safe self-destroying function；But due to the small volume of transfusion needle, it should ensure that transfusion is unobstructed, also to design
Corresponding backing stop structure, so causes existing backing stop structure to there is reliable design sex chromosome mosaicism, exists under certain operation, can
The effect of backing stop structure is eliminated, transfusion needle is promoted to reset again, transfusion needle is possible to be reused by illegal retailer, therefore can not
The correct self-destruction for realizing transfusion needle.
Also a kind of structure uses the backing stop structure for preventing needle tubing return plus the structure that fractures so that transfusion needle is sharp without repeating
Value, so as to prevent the possibility of illegal recovery transfusion needle, reaches safe self-destroying function；As China Patent No. is
200520086804.4 patent document disclosed in《Disposable safety-type intravenous needle》（Authorization Notice No. is：CN
2829755Y）, its primary structure is：Including needle stand, needle point（It is substantially the puncture needle with tip）, blade（Its side of being substantially
It will pass through the fin that transfusion needle is fixed on transfusion person by adhesive tape）, needle guard, conduit, needle stand is externally provided with socket, and socket includes protection
Pipe and the pedestal with protection pipe one, pedestal are hollow, and two ends are provided with socket, and middle part is provided with block tongue, and plug is and socket phase
There is the latch higher than plug body at corresponding plug body, plug body upper hollow, two ends, and centre is a fibre conduit（It is substantially tool
There is infusion channel, and with the self-destruction plug for the self-destroying function that fractures）, fracture, the fibre conduit insertion of plug are set on fibre conduit
It is plugged in together in socket.With after use can self-destruction, prevent using rear exposed stab of syringe needle infected situation or return
Receipts are resell, the advantages of life and health given people brings situation about greatly endangering.But the intravenous needle of said structure is still deposited
Fracture structure and backing stop structure design it is unreasonable, it is specific as follows：
Its structure that fractures is to be arranged on the otch in the middle part of fibre conduit, and fibre conduit has infusion function, and it is hollow tube, by
To the limitation of transfusion needle overall volume, and the transfusion patency of fibre conduit is ensured, fibre conduit wall thickness is relatively thin, and incision design is more
Inconvenience, otch is too shallow, and the later stage fractures inconvenience, too deep then influence assembling and uses.
Secondly, after fibre conduit fractures, fibre conduit is drawn out relatively long distance, and the fracture of fibre conduit is exposed, equally exists
In operation, fracture stabs the risk of Cleaner to Cleaner.
Moreover, backing stop structure is using the block tongue and boss being provided with protection pipe on transfusion needle（It is label 15 in document）, make
Needle stand major part is stuck in hub boss and can not moved still further below, while socket block tongue is withstood on needle stand microcephaly, not only backing stop structure is answered
It is miscellaneous, there is processing inconvenience, and also incision design and backing stop structure independence thereon are higher, no synergy, in actual use
During, there is fibre conduit upper cut and be drawn out after protection pipe, and it is arranged on stopping between the needle stand on fibre conduit and protection pipe
Move back structure it is unmated in place the problem of, there are operating personnel and fracture in advance fibre conduit, and backing stop structure is unmated in place, deposits
In Cleaner's operating process, pressing fibre conduit exposed parts are surprisingly pushed back needle point, the problem of causing security incident.
The content of the invention
In view of the deficienciess of the prior art, it is an object of the invention to provide one kind fracture structure and backing stop structure it is simple
Rationally, it is easy to process, good, the safe and reliable safety self-destructing intravenous infusion needle of operation continuity.
To achieve the above object, the invention provides following technical scheme：A kind of safety self-destructing intravenous infusion needle, including
There are protection pipe, puncture needle, self-destruction plug and needle stand, the protection pipe is externally provided with fin, and protection pipe is hollow sleeve pipe, self-destruction
Plug is inserted into protection pipe slidably, and self-destruction plug one end is the transfusion end of connection transfusion catheter, the transfusion end of self-destruction plug
Protection pipe is passed, the self-destruction plug other end connects the needle stand, and puncture needle is arranged on needle stand, it is characterised in that：It is described from
Ruin plug to be integrally formed with needle stand, the end that self-destruction plug is connected one end with needle stand is that the tapering point is on taper, self-destruction plug
It is axially facing that needle stand one end is small, the other end big, positions shrinkage cavity provided with self-destruction plug in the tube chamber of the protection pipe, self-destruction plug is determined
Position shrinkage cavity is located at one end port at protection pipe tube chamber correspondence self-destruction plug transfusion end, the positioning shrinkage cavity of self-destruction plug and protection pipe tube chamber
The place of being bordered by forms limited step, and self-destruction plug positions shrinkage cavity location fit with self-destruction plug, and the needle stand, which is provided with, can slip into certainly
The positioning shaft part ruined in plug positioning shrinkage cavity, positioning shaft part external diameter is adapted to self-destruction plug positioning shrinkage cavity aperture, positions shaft part axle
It is adapted to length with self-destruction plug positioning shrinkage cavity axial length, positioning shaft part end face is the connection self-destruction plug tapering point
The end face that fractures, the positioning shaft part annular for being shaped as triangle through tapering point Formation cross-section between end face and self-destruction plug that fractures cuts
Mouthful, the positioning shaft part other end is raised provided with annular stop, and annular stop projection can be slipped into protection pipe tube chamber, and with it is described spacing
Step is spacing to be coordinated.
The safety self-destructing intravenous infusion needle of the present invention, its operation principle is：Using, preceding or in use, self-destruction plug is inserted
In protection pipe, through the positioning shrinkage cavity positioning of self-destruction plug；After having used, the transfusion end of self-destruction plug, self-destruction plug are pulled
Slided in protection pipe, puncture needle is slipped into protection pipe tube chamber, until annular stop is raised with being limited in protection pipe tube chamber on needle stand
The position spacing stop of step, puncture needle slips into the positioning shrinkage cavity of self-destruction plug completely into shaft part in protection pipe, is now positioned on needle stand
Interior positioning, because positioning shaft part axial length is adapted with self-destruction plug positioning shrinkage cavity axial length, self-destruction plug is drawn completely
Go out protection pipe, fracture end face and the protection pipe end face of positioning shaft part, the cone of the fracture end face and self-destruction plug of positioning shaft part
Shape end forms the otch of a ring cross-section shape triangle, self-destruction plug is pinched on the other hand, another hand pinches protection pipe, you can along certainly
Ruin plug to fracture with needle stand junction, the plane of rupture flushed with protection pipe is formed on the positioning shaft part of needle stand；It has as follows
Advantage：
1st, due to the tapering point guide effect of self-destruction plug, and when fractureing, protection pipe is positioned to needle stand formation, protection pipe
End face can form the guide effect to operation of breakage so that operation of breakage is simple and easy to apply, and plane of rupture is smooth, plane of rupture and protection pipe
Flush, after realization fractures, puncture needle avoids unexpected stab completely without exposed parts；Simultaneously as needle stand plane of rupture and protection pipe
Flush so that without the operation part for exposing to promotion puncture needle return outside protection pipe, without special design puncture needle backing stop structure,
Shaft part is positioned on needle stand and the positioning shrinkage cavity of self-destruction plug coordinates, with necessarily puncture needle return is prevented, transfusion needle is simple in construction, plus
Work is convenient；
2nd, the upper conical end of the structure that fractures self-destruction plug is connected with needle stand, and setting positioning shaft part and annular stop on needle stand
Projection, sets the positioning shrinkage cavity of self-destruction plug and limited step in protection pipe, to realize fractureing, it is necessary to will puncture for self-destruction plug
Needle tubing moves position to completely, could realize that fracture is exposed, reaches that needle tip retracts are mutually limited with operation of breakage in place, reaches very well
Synergy, it is ensured that operation it is reliable in place.
3rd, reliable self-destruction is realized, using operation of breakage, transfusion needle is without use value, it is to avoid artificial that puncture needle is resetted into weight
The possibility utilized again.
The present invention is further arranged to：The self-destruction plug is provided with stopping elastic sheet, retaining close to the big end position of tapering point
Shell fragment one end is fixed on self-destruction plug outer wall, and the stopping elastic sheet other end is along the radially compressible elasticity opened of self-destruction plug
Open the spacing cooperation of rear and protection tube end in modification end, the elastic deformation end of stopping elastic sheet.
By using above-mentioned stopping elastic sheet structure design, it is ensured that after self-destruction plug is completely pulled out of（Puncture needle is returned completely
Contracting）, it is to avoid due to maloperation by self-destruction plug toward retract situation, it is ensured that safety during operation；Stopping elastic sheet, which loads, simultaneously protects
When in pillar, stopping elastic sheet elastic deformation end elasticity is contradicted on protection inside pipe wall, is acted on close-fitting is positioned to self-destruction plug,
Ensure that the assembling of self-destruction plug is reliable.
The present invention is further arranged to：One end is coordinated to position shrinkage cavity, pin provided with needle stand with needle stand in the protection pipe tube chamber
Seat positioning shrinkage cavity aperture is less than annular stop projection on protection pipe tube chamber, the needle stand and is interference fitted in needle stand positioning shrinkage cavity.
By using said structure design, needle stand positioning is reliable, it is ensured that transfusion needle is reliable using process safety.
The present invention is further arranged to：The raised external diameter of the annular stop is adapted to protection pipe tube chamber aperture.
Using under said structure design, it is ensured that puncture needle is set back in protection pipe, puncture needle fixation is reliable.
The present invention is further arranged to：Two pass joints, two pass joint are equipped with the transfusion end of the self-destruction plug
One end has defining flange, two pass joint upper limit flanges and the spacing cooperation of protection tube end.
Set by using two pass joints, facilitate self-destruction plug to connect transfusion catheter, defining flange is spacing with protection pipe, prevented
Only self-destruction plug is promoted towards needle point direction.
The present invention is further arranged to：The needle stand towards puncture needle needle point one end port be outer big, interior small horn mouth,
Filled with the fixed fixing glue for puncturing needle tubing in horn mouth.
By using above-mentioned technical proposal, puncture needle fixation is reliable.
The invention will be further described below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is specific embodiment of the invention safety self-destructing intravenous infusion needle stereogram；
Fig. 2 is specific embodiment of the invention safety self-destructing intravenous infusion needle use state structural representation；
Fig. 3 is Fig. 2A parts partial enlarged view；
Fig. 4 is Fig. 2 part B partial enlarged views；
Fig. 5 is specific embodiment of the invention puncture needle retracted state structural representation；
Fig. 6 is Fig. 5 C portion partial enlarged views；
Fig. 7 is specific embodiment of the invention safety self-destructing intravenous infusion needle self-destruction status architecture schematic diagram；
Fig. 8 is specific embodiment of the invention protection pipe structural representation；
Fig. 9 is specific embodiment of the invention self-destruction mandrel structure schematic diagram.
Embodiment
As shown in Fig. 1 ~ 9, a kind of safety self-destructing intravenous infusion needle disclosed by the invention includes protection pipe 1, puncture needle
2nd, self-destruction plug 3 and needle stand 4；The protection pipe 1 is externally provided with fin 5, and protection pipe 1 is hollow sleeve pipe, and self-destruction plug 3 is inserted
In protection pipe 1 slidably, the one end of self-destruction plug 3 is the transfusion end of connection transfusion catheter, and the transfusion end of self-destruction plug 3 passes guarantor
Pillar 1, the other end of self-destruction plug 3 connects the needle stand 4；Puncture needle 2 is arranged on needle stand 4.
Described self-destruction plug 3 is integrally formed with needle stand 4, and the end that self-destruction plug 3 is connected one end with needle stand 4 is taper,
The one end of needle stand 4 is small, the other end is big to be axially facing for the tapering point 31 on self-destruction plug 3；It is provided with the tube chamber 10 of the protection pipe 1
Self-destruction plug positions shrinkage cavity 11, and the positioning shrinkage cavity 11 of self-destruction plug is located at the one of the corresponding transfusion of self-destruction plug 3 end of 1 tube chamber of protection pipe 10
Hold port；Form limited step 12 at the positioning of self-destruction plug shrinkage cavity 11 and the place of being bordered by of 1 tube chamber of protection pipe 10, self-destruction plug 3 with from
The plug positioning location fit of shrinkage cavity 11 is ruined, realizes that the positioning close-fitting of self-destruction plug 3 is inserted into protection pipe 1；The needle stand 4 is provided with
The positioning shaft part 41 that can be slipped into the positioning shrinkage cavity 11 of self-destruction plug, the positioning external diameter of shaft part 41 and self-destruction plug positioning shrinkage cavity 11 aperture
Adaptation, the positioning axial length of shaft part 41 is adapted with the self-destruction plug positioning axial length of shrinkage cavity 11, and the positioning end face of shaft part 41 is
The end face 411 that fractures of the self-destruction plug tapering point 31 is connected, positioning shaft part 41 fractures to pass through between end face 411 and self-destruction plug 3
The Formation cross-section of tapering point 31 is shaped as annular incision 30 of triangle；Position the other end of shaft part 41 and be provided with annular stop projection 42；
Annular stop projection 42 can be slipped into the tube chamber of protection pipe 1, and with the limited step 12 it is spacing coordinate.
To ensure that needle stand installs reliable, one end is coordinated to position shrinkage cavity provided with needle stand with needle stand 4 in the tube chamber 10 of protection pipe 1
13, needle stand positioning shrinkage cavity 13 aperture is less than annular stop projection 42 on the tube chamber 10 of protection pipe 1, the needle stand 4 and is interference fitted in pin
In seat positioning shrinkage cavity 13.So self-destruction plug one end carries out self-destruction plug positioning shrinkage cavity positioning in protection pipe, and needle stand is fixed through needle stand
Position shrinkage cavity hole positioning so that puncture needle positioning assembling is reliable.To ensure that puncture needle is set back in protection pipe, puncture needle fixation
Reliably, the raised external diameter of annular stop is adapted to protection pipe tube chamber aperture.
Inserting is furnished with two pass joints 33 on the transfusion end of self-destruction plug 3, and described one end of two pass joint 33 has limit convex
Edge 331, the upper limit flange 331 of two pass joint 33 and the spacing cooperation in the end of protection pipe 1；Two pass joints both conveniently connect transfusion catheter,
It can prevent self-destruction plug from being promoted towards needle point direction again, reach using reliable.
Wherein, the self-destruction plug 3 is provided with stopping elastic sheet 34, the one end of stopping elastic sheet 34 close to the big end position of tapering point 31
It is fixed on the outer wall of self-destruction plug 3, the other end of stopping elastic sheet 34 is along the radially compressible elastic deformation opened of self-destruction plug 3
End, after the elastic deformation end of stopping elastic sheet 34 the is opened and end of protection pipe 1 is spacing to be coordinated.The elastic deformation end quilt of stopping elastic sheet 34
Compression loads in the tube chamber 10 of protection pipe 1, with to the positioning close-fitting effect of self-destruction plug, it is ensured that the assembling of self-destruction plug is reliable；Retaining
Shell fragment 34 tilts warpage to be axially facing the needle point one end of puncture needle 2, and some retaining bullets are circumferentially evenly distributed with self-destruction plug 3
Piece 34.After self-destruction plug 3 is completely pulled out of（Puncture needle is fully retracted）, stopping elastic sheet 34 and the end of protection pipe 1 are spacing, it is to avoid
Due to maloperation by self-destruction plug toward retract situation, it is ensured that safety during operation.
In this specific embodiment, the needle stand 4 towards the needle point one end port of puncture needle 2 be outer big, interior small horn mouth 43,
Filled with the fixed fixing glue for puncturing needle tubing 2 in horn mouth 43.
The safety self-destructing intravenous infusion needle of the present invention, its operation principle is：Using, preceding or in use, self-destruction plug is inserted
In protection pipe, shrinkage cavity, stopping elastic sheet and needle stand positioning shrinkage cavity positioning are positioned through self-destruction plug.
After having used, the transfusion end of self-destruction plug is pulled, self-destruction plug is slided in protection pipe, and puncture needle slips into protection
In pipe tube chamber, until annular stop is raised with the spacing stop of limited step in protection pipe tube chamber on needle stand, puncture needle completely into
In protection pipe, now on needle stand position shaft part slip into self-destruction plug positioning shrinkage cavity in position, due to positioning shaft part axial length with
Self-destruction plug positioning shrinkage cavity axial length is adapted, and self-destruction plug is completely pulled out of protection pipe, positioning shaft part fracture end face with
Protection pipe end face, the tapering point of the fracture end face and self-destruction plug of positioning shaft part forms cutting for a ring cross-section shape triangle
Mouthful, self-destruction plug is pinched on the other hand, and another hand pinches protection pipe, you can fractureed along self-destruction plug with needle stand junction, in needle stand
Positioning shaft part on form the plane of rupture that is flushed with protection pipe.It has the following advantages that：
1st, due to the tapering point guide effect of self-destruction plug, and when fractureing, protection pipe is positioned to needle stand formation, protection pipe
End face can form the guide effect to operation of breakage so that operation of breakage is simple and easy to apply, and plane of rupture is smooth, plane of rupture and protection pipe
Flush, after realization fractures, puncture needle avoids unexpected stab completely without exposed parts；Simultaneously as needle stand plane of rupture and protection pipe
Flush so that without the operation part for exposing to promotion puncture needle return outside protection pipe, without special design puncture needle backing stop structure,
Shaft part and self-destruction plug positioning shrinkage cavity are positioned on needle stand, annular stop is raised coordinates with protection pipe tube chamber, with necessarily preventing from wearing
Pricker return, transfusion needle is simple in construction, easy to process；
2nd, the upper conical end of the structure that fractures self-destruction plug is connected with needle stand, and setting positioning shaft part and annular stop on needle stand
Projection, sets the positioning shrinkage cavity of self-destruction plug and limited step in protection pipe, to realize fractureing, it is necessary to will puncture for self-destruction plug
Needle tubing moves position to completely, could realize that fracture is exposed, reaches that needle tip retracts are mutually limited with operation of breakage in place, reaches very well
Synergy, it is ensured that operation it is reliable in place.
3rd, reliable self-destruction is realized, using operation of breakage, transfusion needle is without use value, it is to avoid artificial that puncture needle is resetted into weight
The possibility utilized again.
Claims (8)
1. a kind of safety self-destructing intravenous infusion needle, includes protection pipe, puncture needle, self-destruction plug and needle stand, the protection
Pipe is externally provided with fin, and protection pipe is hollow sleeve pipe, and self-destruction plug is inserted into protection pipe slidably, and self-destruction plug one end is company
The transfusion end of transfusion catheter is connect, the transfusion end of self-destruction plug passes protection pipe, and the self-destruction plug other end connects the needle stand, punctures
Pin is arranged on needle stand, it is characterised in that：Described self-destruction plug is integrally formed with needle stand, and self-destruction plug is connected one end with needle stand
End be taper, needle stand one end is small, the other end is big, the tube chamber of the protection pipe to be axially facing for the tapering point on self-destruction plug
The interior self-destruction plug that is provided with positions shrinkage cavity, and the positioning shrinkage cavity of self-destruction plug is located at the one end at protection pipe tube chamber correspondence self-destruction plug transfusion end
Port, self-destruction plug positioning shrinkage cavity forms limited step with the protection pipe tube chamber place of being bordered by, and self-destruction plug is positioned with self-destruction plug to contract
Hole location fit, the needle stand be provided with can slip into self-destruction plug positioning shrinkage cavity in positioning shaft part, positioning shaft part external diameter with from
Plug positioning shrinkage cavity aperture adaptation is ruined, positioning shaft part axial length is adapted with self-destruction plug positioning shrinkage cavity axial length, positioned
Shaft part end face is connects the end face that fractures of the self-destruction plug tapering point, and positioning shaft part fractures to pass through between end face and self-destruction plug
Tapering point Formation cross-section is shaped as annular incision of triangle, and the positioning shaft part other end is raised provided with annular stop, annular stop
Projection can be slipped into protection pipe tube chamber, and with the limited step it is spacing coordinate.
2. safety self-destructing intravenous infusion needle according to claim 1, it is characterised in that：The self-destruction plug is close to tapering point
Big end position be provided with stopping elastic sheet, stopping elastic sheet one end is fixed on self-destruction plug outer wall, the stopping elastic sheet other end be along
The radially compressible elastic deformation end opened of self-destruction plug, the elastic deformation end of stopping elastic sheet is spacing with protection tube end after opening
Coordinate.
3. safety self-destructing intravenous infusion needle according to claim 1 or claim 2, it is characterised in that：In the protection pipe tube chamber with
Needle stand coordinates one end to position shrinkage cavity provided with needle stand, and needle stand positioning shrinkage cavity aperture is less than annular limit on protection pipe tube chamber, the needle stand
Position projection is interference fitted in needle stand positioning shrinkage cavity.
4. safety self-destructing intravenous infusion needle according to claim 1 or claim 2, it is characterised in that：The annular stop projection
External diameter is adapted to protection pipe tube chamber aperture.
5. safety self-destructing intravenous infusion needle according to claim 3, it is characterised in that：The raised external diameter of the annular stop
It is adapted to protection pipe tube chamber aperture.
6. safety self-destructing intravenous infusion needle according to claim 1 or claim 2, it is characterised in that：The transfusion of the self-destruction plug
Two pass joints are equipped with end, described two pass joints one end has defining flange, two pass joint upper limit flanges and protection pipe end
Portion is spacing to be coordinated.
7. safety self-destructing intravenous infusion needle according to claim 3, it is characterised in that：On the transfusion end of the self-destruction plug
Two pass joints are equipped with, described two pass joints one end has defining flange, two pass joint upper limit flanges and protection tube end limit
Position coordinates.
8. safety self-destructing intravenous infusion needle according to claim 1, it is characterised in that：The needle stand is towards puncture needle needle point
One end port is filled with the fixed fixing glue for puncturing needle tubing in outer big, interior small horn mouth, horn mouth.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410787413.9A CN104436364B (en) | 2014-12-17 | 2014-12-17 | A kind of safety self-destructing intravenous infusion needle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410787413.9A CN104436364B (en) | 2014-12-17 | 2014-12-17 | A kind of safety self-destructing intravenous infusion needle |
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| Publication Number | Publication Date |
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| CN104436364A CN104436364A (en) | 2015-03-25 |
| CN104436364B true CN104436364B (en) | 2017-07-28 |
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| CN104887250B (en) * | 2015-04-28 | 2018-04-10 | 顶一医疗科技（昆山）有限公司 | A kind of disposable safe blood sampling Needlestick prevention device |
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| CN204319421U (en) * | 2014-12-17 | 2015-05-13 | 温州京环科技有限公司 | A kind of safety self-destructing venoclysis needle |
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|---|---|---|---|---|
| US5108376A (en) * | 1990-11-14 | 1992-04-28 | Safetyject | Retractable intravenous needle assembly |
| CN1135122C (en) * | 1998-06-23 | 2004-01-21 | 刘文能 | Multi-purpose safety automatic transfusion vein indwelling needle |
| US20050015053A1 (en) * | 2003-07-16 | 2005-01-20 | Baktech Corp. | Safety catheter |
| CN2829755Y (en) * | 2005-09-09 | 2006-10-25 | 山东淄博山川医用器材有限公司 | Disposable safety intravenous needle |
| CN201235124Y (en) * | 2007-08-23 | 2009-05-13 | 上海顶尖堂生化科技有限公司 | Transfusion and blood transfusion needle with safety self-destroying structure |
| CN104162203B (en) * | 2014-07-31 | 2016-05-25 | 浙江大学医学院附属邵逸夫医院 | Type self-destroyed intravenous infusion needle |
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2014
- 2014-12-17 CN CN201410787413.9A patent/CN104436364B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204319421U (en) * | 2014-12-17 | 2015-05-13 | 温州京环科技有限公司 | A kind of safety self-destructing venoclysis needle |
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