CN208785463U - A kind of Novel arteriovenous indwelling needle - Google Patents
A kind of Novel arteriovenous indwelling needle Download PDFInfo
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- CN208785463U CN208785463U CN201820609468.4U CN201820609468U CN208785463U CN 208785463 U CN208785463 U CN 208785463U CN 201820609468 U CN201820609468 U CN 201820609468U CN 208785463 U CN208785463 U CN 208785463U
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- cannule
- mandril
- piston
- outer cylinder
- perfusion tube
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Abstract
The problem of the utility model relates to a kind of Novel arteriovenous indwelling needles, belong to arteriovenous infusion, solve in prior art connection procedure, liquid medicine spill.The iv cannule of the utility model is connect using movement with perfusion tube, and the tail portion of iv cannule is arranged in piston, and perfusion tube connecting pin is equipped with mandril, and mandril heads into piston, and mandril side wall is connected to internal piston side wall, realizes the circulation of medical fluid.Using piston structure, ensure that under notconnect state, piston can through-hole on sealed outer cylinder, prevent liquid medicine spill；Extension sleeve is used in perfusion tube connecting pin, can guarantee the through-hole sealing of mandril side wall under notconnect state, prevent medical fluid from flowing out.
Description
Technical field
The utility model relates to arteriovenous injection technique field more particularly to a kind of Novel arteriovenous indwelling needles.
Background technique
Pain caused by the use of iv cannule can be reduced patient due to venipuncture repeatedly and to the fear having an injection
Sense mitigates the impatience of patient and family members, is convenient for clinical application, and anxious, critical patient rescue medication mitigates the work of nurse
Amount reduces patient pain, thus vein iv cannule is in wide clinical application.
Existing iv cannule, during use, when iv cannule is connected with perfusion tube, it is likely that meeting
There is a small amount of medical fluid to flow out, is itself waste to drug, and for patient or medical staff, it is likely that it will cause pollution
Or infection, it is therefore desirable to design the safe and reliable iv cannule of one kind come such issues that solve.
Utility model content
In view of above-mentioned analysis, the utility model is intended to provide a kind of Novel arteriovenous indwelling needle, existing dynamic to solve
Venous detaining needle is when connecting perfusion tube, the problem of having liquid medicine spill.
The purpose of this utility model is mainly achieved through the following technical solutions:
A kind of Novel arteriovenous indwelling needle, iv cannule are connect using movement with perfusion tube, and piston is arranged
In the tail portion of iv cannule, perfusion tube connecting pin is equipped with mandril, and mandril heads into piston, mandril side wall and internal piston side
Wall connection, realizes the circulation of medical fluid.It using piston structure, ensure that under notconnect state, piston can be on sealed outer cylinder
Through-hole prevents liquid medicine spill；Extension sleeve is used in perfusion tube connecting pin, can guarantee mandril side wall under notconnect state
Through-hole sealing, prevents medical fluid from flowing out.
The tail portion of iv cannule is equipped with piston structure, and piston is mounted in outer cylinder, and is moved along outer tube inner wall, and protects
Sealing is held, liquid medicine spill can not be had during piston stretching motion.
Outer cylinder is hollow structure, and hollow structure is connected to the syringe needle of iv cannule；The inner wall of outer cylinder is equipped with logical
Hole, the hollow structure of connection piston structure inside and outer cylinder, constitutes the access of liquid medicine flow.
The outside of the mandril of the connecting pin of perfusion tube is equipped with sleeve, and sleeve can be along the axial stretching of perfusion tube, and and mandril
Between keep sealing, guarantee slip expansion move when, do not have liquid medicine spill.
It is connected to inside mandril with perfusion tube inside, and mandril side wall is equipped with through-hole, forms the flow passage of medical fluid.
The diameter of mandril, the diameter of piston, the internal diameter of outer cylinder, sleeve internal diameter be equal, since size is equal, so
While mandril jacking piston, outer cylinder propelling sleeve, junction does not have gap, can guarantee close during entire grafting
Envelope, prevents liquid medicine spill.
Through-hole on the inner wall of outer cylinder is identical with the aperture of the through-hole on mandril side wall, and position consistency circumferentially,
After completing connection, the through-hole on through-hole and mandril side wall on the inner wall of outer cylinder can be aligned completely, be formed from perfusion tube extremely
The medical fluid access of iv cannule.
Piston is connect with iv cannule by retractable structure, and the connecting pin of sleeve and perfusion tube passes through scalable knot
Structure connection can use elastic construction, and when guarantee disconnects, piston and sleeve can automatically return to initial position, block
Through-hole prevents liquid medicine spill.
In the distal end faces of outer cylinder and it is equipped with locking bail in the front end surface of sleeve, prevents the perfusion tube in infusion process
It is surprisingly disconnected with iv cannule；Locking when iv cannule is connected with perfusion tube, in the distal end faces of outer cylinder
Locking bail in the front end surface of hook and sleeve is mutually hooked and is locked, including axial locking, for preventing from disconnecting, also
Including circumferential locking, for preventing the through-hole of outer cylinder and mandril from misplacing.
When iv cannule is connected with perfusion tube, mandril compresses piston, and outer cylinder is by sleeve compresses, and the inner wall of outer cylinder
On through-hole and mandril side wall on through-hole alignment, formed access after can be carried out infusion.
The conical protrusions that cone angle is not less than 90 ° are equipped at the front end surface center of mandril；It is set in the distal end faces of piston
There is, size identical conical shaped depression identical as short face convex shape before top cover.When perfusion tube is connected with iv cannule,
Protrusion and recess need to be aligned, and play to positive effect, since the size of mandril, piston, outer cylinder, sleeve is consistent, if do not existed
To carrying out grafting in the case where just, it is likely that component or seal failure can be damaged, can all lead to liquid medicine spill.
Iv cannule is equipped with 2 needle handles that can be rotated around iv cannule axis, convenient to arteriovenous indwelling
Needle is fixed, while needle handle can be freely rotated, and facilitates medical staff and is adjusted according to the difference at the position of injection and is optimal
Fixed angle.
Needle handle is arranged on annulus, and annulus covers on iv cannule；Needle handle is by annulus around iv cannule axis
Line rotation can guarantee that 2 needle handles will not be interfered with each other in rotation by way of annulus, can also be by needle handle in storage
It is combined, reduces the volume of occupancy.
The middle part of iv cannule is equipped with 2 parallel stop collars of section；The corresponding annulus of 2 needle handles is disposed in parallel in
It between 2 stop collars, prevents annulus from falling off, while guaranteeing the compact-sized of entire iv cannule, mitigation is fixed on patient
Sense of discomfort with it.
The utility model has the following beneficial effects:
1, the present invention uses piston structure, ensure that under notconnect state, piston can through-hole on sealed outer cylinder, prevent
Only liquid medicine spill；
2, the utility model uses extension sleeve in perfusion tube connecting pin, can guarantee mandril side wall under notconnect state
Through-hole sealing, prevent medical fluid from flowing out；
3, the utility model is in connection, mandril jacking piston, and the through-hole alignment on outer cylinder and mandril realizes connection, together
As long as when through-hole be not aligned with, it is internal since the sealing of piston and sleeve does not have liquid medicine spill.
It in the utility model, can also be combined with each other between above-mentioned each technical solution, to realize more preferably combination sides
Case.Other feature and advantage of the utility model will illustrate in the following description, also, certain advantages can be from specification
It becomes apparent, or is understood and implementing the utility model.The purpose of this utility model and other advantages can pass through
It is achieved and obtained in specifically noted content in bright book, claims and attached drawing.
Detailed description of the invention
Attached drawing is only used for showing the purpose of specific embodiment, and is not considered as limitations of the present invention, entire
In attached drawing, identical reference symbol indicates identical component.
Fig. 1 is a kind of structural schematic diagram of Novel arteriovenous indwelling needle；
Fig. 2 is a kind of cross-sectional view of Novel arteriovenous indwelling needle；
Appended drawing reference: 1- iv cannule；2- perfusion tube；3- outer cylinder；4- sleeve；5- locking bail；6- needle handle；7- circle
Ring；8- piston；9- mandril.
Specific embodiment
Specifically describe the preferred embodiment of the utility model with reference to the accompanying drawing, wherein attached drawing constitutes the application one
Point, and be used to illustrate the principles of the present invention together with the embodiments of the present invention, it is not intended to limit the utility model
Range.
A kind of Novel arteriovenous indwelling needle, iv cannule 1 is connect using movement with perfusion tube 2, and piston 8 is set
It sets in the tail portion of iv cannule 1,2 connecting pin of perfusion tube is equipped with mandril 9, and mandril 9 heads into piston 8,9 side wall of mandril and work
The connection of 8 internal side walls is filled in, realizes the circulation of medical fluid.It using piston structure, ensure that under notconnect state, piston 8 can be close
The through-hole on outer cylinder 3 is sealed, liquid medicine spill is prevented；Extension sleeve 4 is used in 2 connecting pin of perfusion tube, it can be under notconnect state
The through-hole sealing for guaranteeing 9 side wall of mandril, prevents medical fluid from flowing out.
The tail portion of iv cannule 1 is equipped with piston structure, and piston 8 is mounted in outer cylinder 3, and is moved along 3 inner wall of outer cylinder,
And sealing is kept, liquid medicine spill can not be had during 8 stretching motion of piston.In piston structure, 8 space of piston
Bottom, equipped with the venthole being in communication with the outside, when preventing piston 8 mobile, space between piston 8 and outer cylinder 3 is led because of air pressure
Activation plug 8 can not move.
Outer cylinder 3 is hollow structure, and hollow structure is connected to the syringe needle of iv cannule 1；The inner wall of outer cylinder 3 is equipped with
Through-hole, the hollow structure of connection piston structure inside and outer cylinder 3, constitutes the access of liquid medicine flow.
The outside of the mandril 9 of the connecting pin of perfusion tube 2 be equipped with sleeve 4, sleeve 4 can along the axial stretching of perfusion tube 2, and with
Sealing is kept between mandril 9, guarantees not have liquid medicine spill in 4 stretching motion of sleeve.
The inside of mandril 9 be connected to inside perfusion tube 2, and 9 side wall of mandril forms the flow passage of medical fluid equipped with through-hole.
The diameter of mandril 9, the diameter of piston 8, the internal diameter of outer cylinder 3, sleeve 4 internal diameter be equal, since size is equal,
So in 9 jacking piston 8 of mandril, while 3 propelling sleeve 4 of outer cylinder, junction does not have gap, can guarantee the mistake of entire grafting
Sealing in journey, prevents liquid medicine spill.
Through-hole on the inner wall of outer cylinder 3 is identical with the aperture of the through-hole on 9 side wall of mandril, and position one circumferentially
It causes, after completing connection, the through-hole on 9 side wall of through-hole and mandril on the inner wall of outer cylinder 3 can be aligned completely, formed and be infused certainly
Pipe 2 to iv cannule 1 medical fluid access.
Piston 8 is connect with iv cannule 1 by retractable structure, and the connecting pin of sleeve 4 and perfusion tube 2 passes through and can stretch
Shrinking structure connection can use elastic construction, and when guarantee disconnects, piston 8 and sleeve 4 can automatically return to initial bit
It sets, blocks through-hole, prevent liquid medicine spill.
In the distal end faces of outer cylinder 3 and it is equipped with locking bail 5 in the front end surface of sleeve 4, is prevented defeated in infusion process
Liquid pipe 2 and iv cannule 1 surprisingly disconnect；Locking bail 5 is circumferentially arranged, and in the distal end faces of outer cylinder 3 and sleeve 4
Front end surface on be equipped with gap, allow in the distal end faces of outer cylinder 3 and the front end surface of sleeve 4 on 5 phase of locking bail
Mutually it is inserted into together, it is contrary with the crotch of locking bail 5 in the front end surface of sleeve 4 in the distal end faces of outer cylinder 3, it is inserted into one
After rising, rotation can be hooked mutually；Locking bail 5 when iv cannule 1 and perfusion tube 2 connect, in the distal end faces of outer cylinder 3
It mutually hooks and locks with the locking bail 5 in the front end surface of sleeve 4, including axial locking, for preventing from disconnecting, also
Including circumferential locking, for preventing the through-hole of outer cylinder 3 and mandril 9 from misplacing.
When iv cannule 1 and perfusion tube 2 connect, mandril 9 compresses piston 8, and outer cylinder 3 compresses sleeve 4, and outer cylinder
The through-hole alignment on 9 side wall of through-hole and mandril on 3 inner wall can be carried out infusion after forming access.
The conical protrusions that cone angle is not less than 90 ° are equipped at the front end surface center of mandril 9；In the distal end faces of piston 8
Equipped with, size identical conical shaped depression identical as short face convex shape before top cover.Perfusion tube 2 and iv cannule 1 connect
When connecing, protrusion and recess need to be aligned, and play to positive effect, since mandril 9, piston 8, outer cylinder 3, the size of sleeve 4 are consistent,
If not carrying out grafting to just, it is likely that component or seal failure can be damaged, can all lead to liquid medicine spill.
Iv cannule 1 is equipped with 2 needle handles 6 that can be rotated around 1 axis of iv cannule, convenient to stay to arteriovenous
It sets needle 1 to be fixed, while needle handle 6 can be freely rotated, facilitates medical staff according to the difference at the position of injection to adjust most
Good fixed angle.
Needle handle 6 is arranged on annulus 7, and 7 sets of annulus on iv cannule 1；Needle handle 6 is stayed by annulus 7 around arteriovenous
The rotation of 1 axis of needle is set, by way of annulus 7, can guarantee that 2 needle handles 6 will not be interfered with each other in rotation, in storage
Needle handle 6 can be combined, reduce the volume of occupancy.
The middle part of iv cannule 1 is equipped with 2 parallel stop collars of section；2 corresponding annulus 7 of needle handle 6 are set side by side
It sets between 2 stop collars, prevents annulus 7 from falling off, while guaranteeing the compact-sized of entire iv cannule 1, mitigate and fix
Sense of discomfort with patient.
In conclusion the embodiments of the present invention provides a kind of Novel arteriovenous indwelling needle, the present invention is using work
Plug structure ensure that under notconnect state, piston can through-hole on sealed outer cylinder, prevent liquid medicine spill；The utility model
Extension sleeve is used in perfusion tube connecting pin, can guarantee the through-hole sealing of mandril side wall under notconnect state, prevent medical fluid
Outflow；The utility model is in connection, mandril jacking piston, and the through-hole alignment on outer cylinder and mandril realizes connection, as long as while
Through-hole is not aligned with, internal since the sealing of piston and sleeve does not have liquid medicine spill.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.
Claims (10)
1. a kind of Novel arteriovenous indwelling needle, which is characterized in that the iv cannule (1) uses movement and perfusion tube
(2) it connects, and piston (8) setting, in the tail portion of iv cannule (1), perfusion tube (2) connecting pin is equipped with mandril (9), described
Mandril (9) heads into piston (8), and mandril (9) side wall is connected to piston (8) internal side wall, realizes the circulation of medical fluid.
2. iv cannule (1) according to claim 1, which is characterized in that the tail portion of the iv cannule (1)
Equipped with piston structure, the piston (8) is mounted in outer cylinder (3), and is moved along outer cylinder (3) inner wall, and keeps sealing；
The outer cylinder (3) is hollow structure, and hollow structure is connected to the syringe needle of the iv cannule (1)；The outer cylinder
(3) inner wall is equipped with through-hole, the hollow structure of connection piston structure inside and the outer cylinder (3).
3. iv cannule (1) according to claim 2, which is characterized in that the top of the connecting pin of the perfusion tube (2)
The outside of bar (9) is equipped with sleeve (4), and the sleeve (4) can keep along the axial stretching of perfusion tube (2), and between mandril (9)
Sealing；
It is connected to inside mandril (9) inside and perfusion tube (2), and the mandril (9) side wall is equipped with through-hole.
4. iv cannule (1) according to claim 3, which is characterized in that diameter, the piston (8) of the mandril (9)
Diameter, the internal diameter of outer cylinder (3), the internal diameter of sleeve (4) be equal；
Through-hole on the inner wall of the outer cylinder (3) is identical with the aperture of the through-hole on mandril (9) side wall, and position circumferentially
Unanimously.
5. iv cannule (1) according to claim 4, which is characterized in that the piston (8) and iv cannule
(1) it is connected by retractable structure, the sleeve (4) is connect with the connecting pin of perfusion tube (2) by retractable structure；
When the iv cannule (1) and perfusion tube (2) connect, the mandril (9) compresses the piston (8), described outer
Cylinder (3) compresses the sleeve (4), and the through-hole alignment on the through-hole and mandril (9) side wall on the inner wall of the outer cylinder (3).
6. iv cannule (1) according to claim 5, which is characterized in that the front end surface center of the mandril (9)
Place is equipped with the conical protrusions that cone angle is not less than 90 °；
The distal end faces of the piston (8) are equipped with identical as short face convex shape before top cover, the identical cone of size is recessed
It falls into.
7. iv cannule (1) according to claim 6, which is characterized in that in the distal end faces of the outer cylinder (3) and
Locking bail (5) are equipped in the front end surface of sleeve (4)；
When the iv cannule (1) and perfusion tube (2) connect, locking bail (5) in the distal end faces of the outer cylinder (3) and
Locking bail (5) in the front end surface of sleeve (4) is mutually hooked and is locked.
8. iv cannule (1) according to claim 7, which is characterized in that the iv cannule (1) is equipped with
2 needle handles (6) that can be rotated around the iv cannule (1) axis.
9. iv cannule (1) according to claim 8, which is characterized in that the needle handle (6) is arranged in annulus (7)
On, the annulus (7) covers on the iv cannule (1)；The needle handle (6) is stayed by annulus (7) around the arteriovenous
Set the rotation of needle (1) axis.
10. iv cannule (1) according to claim 9, which is characterized in that in the iv cannule (1)
Portion is equipped with 2 parallel stop collars of section；The corresponding annulus (7) of 2 needle handles (6) is disposed in parallel between 2 stop collars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820609468.4U CN208785463U (en) | 2018-04-26 | 2018-04-26 | A kind of Novel arteriovenous indwelling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820609468.4U CN208785463U (en) | 2018-04-26 | 2018-04-26 | A kind of Novel arteriovenous indwelling needle |
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| Publication Number | Publication Date |
|---|---|
| CN208785463U true CN208785463U (en) | 2019-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820609468.4U Active CN208785463U (en) | 2018-04-26 | 2018-04-26 | A kind of Novel arteriovenous indwelling needle |
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| CN (1) | CN208785463U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113616877A (en) * | 2021-08-06 | 2021-11-09 | 首都医科大学宣武医院 | Indwelling needle assembly with valve |
-
2018
- 2018-04-26 CN CN201820609468.4U patent/CN208785463U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113616877A (en) * | 2021-08-06 | 2021-11-09 | 首都医科大学宣武医院 | Indwelling needle assembly with valve |
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