CN209253818U - A kind of anti-needle thorn remaining needle - Google Patents
A kind of anti-needle thorn remaining needle Download PDFInfo
- Publication number
- CN209253818U CN209253818U CN201821052232.1U CN201821052232U CN209253818U CN 209253818 U CN209253818 U CN 209253818U CN 201821052232 U CN201821052232 U CN 201821052232U CN 209253818 U CN209253818 U CN 209253818U
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- CN
- China
- Prior art keywords
- needle
- shield
- needle tubing
- cantilever
- guard housing
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Abstract
A kind of anti-needle thorn remaining needle, including needle core and flexible conduit, needle core includes needle tubing and needle stand, equipped with the protection mechanism for activating locking pin tube head when extracting needle core automatically on needle tubing, protection mechanism is locked by the protrusion on needle tubing with needle tubing, protection mechanism includes the shield covered on guide holder and the anti-guard housing for being located at shield rear, anti- guard housing front end is equipped with groove, base rear end is protected to be equipped with needle stand pilot hole, the shield opposite with needle stand pilot hole is equipped with through-hole, shield is equipped with interior cantilever, interior cantilever front end is equipped with the blocking portion being locked in needle tubing head in shield, anti- guard housing is equipped with the outer cantilever being stuck on catheter block outer wall.The utility model is realized the locking of anti-guard housing and catheter block by outer cantilever, realizes the locking to needle tubing head by the blocking portion on interior cantilever by setting the anti-guard housing with outer cantilever and the shield with interior cantilever；It realizes and activates locking pin tube head automatically when extracting needle core, protection effect is good.
Description
Technical field
The utility model relates to a kind of medical instrument, in particular to a kind of anti-needle pierces remaining needle.
Background technique
Venous detaining needle pain caused by it can be reduced infant due to venipuncture repeatedly and to the fear having an injection, just
In clinical application, anxious, critical patient rescue medication mitigates the workload of nurse, reduces the advantages such as infant pain, clinically
It is used widely.After use during the withdraw of the needle, syringe needle is polluted traditional remaining needle by blood samples of patients, and medical staff is pulling out
From or cleaning abandon when be easy to be stabbed by syringe needle, be easy infectious disease, there are some potential safety problemss.It is quiet in clinical use
After the puncture of steel needles of vein succeeds and teleflex is smoothly inducted into patient's venous indwelling, medical worker must be past steel needle
Remaining needle rear portion is withdrawn to casing seat is completely disengaged, and just used steel needle is abandoned put case aside as useless in sharppointed article later.
Many remaining needles are to solve its existing safety problem in the prior art, disclose a variety of safety, the thorn indwelling of anti-needle
Needle, these remaining needles are generally equipped with screening glass, block syringe needle by resilient protection piece during the syringe needle withdraw of the needle, syringe needle is avoided to prick
Hurt medical staff, but these screening glass because it is elastic not enough, structure too complex, cost of manufacture is high.
Chinese patent discloses one kind, and application No. is 201520756765.8, entitled disposable anti-needle thorn remaining needles
Utility model patent, the remaining needle by spring leaf be set to housing in, it is described when the needle tubing is mounted in the spring leaf
Protrusion on spring leaf just drops into the concave place of the catheter block, to fix and lock the spring leaf with the catheter block
Tightly.After the completion of venipuncture, the related needle point of the needle tubing is needed to transfer to outward, when the related needle point of the needle tubing leave it is described
Baffle on spring leaf, the baffle just loses support, thus starts the potential elastic force of the U type bound edge elasticity arm, makes
The baffle is closed to the center position of the needle tubing, enables the baffle block needle point, to reach anti-stab effect.But the structure
Remaining needle has the disadvantages that first, and spring leaf both arms squeeze contact point on steel needle surface, and skin resistance is big when drawing steel needle,
It can cause to draw trace or burr on steel needle surface；Second, jacket internal is with salient point detent, for fixed and locking spring piece, salient point
Design in jacket internal can acquire a certain degree of difficulty to injection mold and forming process, and molded product does not allow easy mold release, such as each salient point
For detent because the defect of molding challenge is without accurate, needing could be by spring leaf and housing together from catheter block using biggish external force
Interior extraction, it is inconvenient to use, moreover, the position of housing and spring leaf is not moved with the fixation of salient point detent, after elasticity arm starting,
Spring leaf and housing are just separated with catheter block together, if design is not accurate, it is possible to stay in being nested with outside in catheter block.
Summary of the invention
Technical problem to be solved in the utility model be in view of the deficiencies of the prior art, provide it is a kind of design rationally, make
With convenient, the simply anti-needle thorn remaining needle of structure.
Technical problem to be solved in the utility model is realized by technical solution below, and the utility model is
A kind of anti-needle thorn remaining needle, including needle core and flexible conduit, the flexible conduit is by conduit line, catheter block and positive pressure connector group
At conduit line is connected between catheter block and positive pressure connector by extension tube, the needle core includes needle on catheter block
Pipe and needle stand, needle tubing are pierced by from conduit line through catheter block, its main feature is that,
Activate the protection mechanism of locking pin tube head automatically when on the needle tubing equipped with extraction needle core, protection mechanism passes through
Protrusion and needle tubing on needle tubing lock, and drive protection mechanism to retreat together when needle tubing is withdrawn；
The protection mechanism includes the shield covered on guide holder and the anti-guard housing for being located at shield rear, anti-guard housing
It is equipped with outer cantilever of the Extender Card on catheter block outer wall forward, anti-guard housing front end is recessed equipped with matching with shield top
Slot, protection base rear end are equipped with the needle stand pilot hole for passing through for needle tubing and matching with needle stand, and needle stand pilot hole is communicated with groove, with
The opposite shield of needle stand pilot hole is equipped with the through-hole for passing through for needle tubing and matching with needle tubing protrusion, is equipped in shield
The interior cantilever matched with needle tubing side wall, interior cantilever front end, which is equipped with, is locked in the blocking portion in shield for needle tubing head, interior outstanding
Arm rear end is fixedly connected with shield, and the distance of interior cantilever front end to through-hole is greater than needle tubing protrusion to the distance of needle tubing front end；
Under assembled state, needle tubing passes through the through-hole on needle stand pilot hole and shield on anti-guard housing, through interior cantilever from leading
Tube socket extends in conduit line, and the outer cantilever on anti-guard housing opens on the lateral wall of catheter block thus by anti-guard housing and shield
It is sleeved on the rear end of catheter block, the blocking portion in shield on cantilever is pressed on needle tubing tube wall；
Blocking portion in needle tubing fallback procedure, when the protrusion of needle tubing is retreated to the through hole of shield, on interior cantilever
The front on needle tubing head is moved to, so that needle tubing head is locked in shield to prevent needle thorn automatically, is continuing fallback procedure
In, needle tubing drives shield to withdraw together in groove, and during withdrawing backward, shield struts outer cantilever, anti-guard housing
It is unlocked, and takes away flexible conduit together in company with needle tubing and shield.
What technical problem to be solved in the utility model can also be realized by technical solution below, it is led described
The lateral wall of tube socket is equipped with the locking mechanism of anti-guard housing, and the unlock of locking mechanism is equipped between the shield and anti-guard housing
Mechanism.
What technical problem to be solved in the utility model can also be realized by technical solution below, the lock
Determine the fixture block that mechanism includes the card slot being located on catheter block and matches with card slot, fixture block is arranged on outer cantilever；
The unlocking mechanism includes that the convex for opening outer cantilever unlock locking mechanism is closed with protection cover outer wall match profiles
It rises, internal projection is located on the outer cantilever at fixture block rear；Protection cover outer wall by front end is convex equipped with matching with internal projection
Block.
What technical problem to be solved in the utility model can also be realized by technical solution below, in the needle
Pipe side is equipped with the blood back tube body being arranged along the axis of needle tubing, and the both ends of blood back tube body are connected with needle tubing, the blood return tube
Body is in capillary, in bushing of the through hole of shield equipped with locking blood back tube body.
What technical problem to be solved in the utility model can also be realized by technical solution below, the lining
Be arranged with the pipe sleeve with the coaxial arrangement of shield through-hole, the hole wall of pipe sleeve and through-hole is fitted close, the front end of pipe sleeve be provided with to
Several oblique lattice framings on blood back tube body, oblique lattice framing is along the circumferentially distributed of needle tubing.
What technical problem to be solved in the utility model can also be realized by technical solution below, the needle
The protrusion of pipe is the bulge of crimping is formed two sides recess.
What technical problem to be solved in the utility model can also be realized by technical solution below, described is interior
There are two cantilever settings, is symmetrically arranged at needle tubing two sides, the outer cantilever on anti-guard housing is correspondingly arranged with cantilever interior on shield.
What technical problem to be solved in the utility model can also be realized by technical solution below, described anti-
The outer wall of guard housing is equipped with finger briquetting.
Compared with prior art, the utility model is filled by setting the anti-guard housing with outer cantilever and the shield with interior cantilever
With period, outer cantilever is clipped on anti-guard housing, and the locking of anti-guard housing and catheter block is realized by outer cantilever, passes through the resistance on interior cantilever
Stopper realizes the locking to needle tubing head；By setting bushing, shield and needle tubing are locked, conciliates lock machine by setting locking mechanism
Structure, realizes the automatic locking and unlock of anti-guard housing and catheter block, activates locking pin tube head automatically when extracting needle core to realize,
Design is simple, reasonable, and easy to use, protection effect is good.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the main view of Fig. 1；
Fig. 3 is structural schematic diagram of the utility model after needle tubing extraction；
Fig. 4 is the partial enlarged view of Fig. 2；
Fig. 5 is the structural schematic diagram of shield；
Fig. 6 is the structural schematic diagram of anti-guard housing；
Fig. 7 is the structural schematic diagram of needle tubing；
Fig. 8 is the structural schematic diagram of bushing.
Specific embodiment
Referring to the drawings, the specific technical solution of the utility model is further described, in order to those skilled in the art
Member is further understood that the utility model, without constituting the limitation to its right.
Referring to Fig.1-8, a kind of anti-needle pierces remaining needle, including needle core and flexible conduit, the flexible conduit by conduit line, lead
Tube socket and positive pressure connector composition, catheter block 1 are threeway catheter block, and conduit line is on catheter block, catheter block 1 and positive pressure connector
Between be connected by extension tube, the needle core includes needle tubing 3 and needle stand, and needle tubing is pierced by from conduit line through catheter block,
The protection mechanism on activation locking 3 head of needle tubing, protection mechanism are logical automatically when on the needle tubing 3 equipped with extraction needle core
The protrusion 6 and needle tubing 3 crossed on 3 tube body of needle tubing lock, and drive protection mechanism to retreat together when needle tubing 3 is withdrawn；
The protection mechanism includes the shield 8 covered on guide holder 1 and the anti-guard housing 2 for being located at 8 rear of shield, is prevented
Guard housing 2 is equipped with the outer cantilever 4 being stuck on 1 outer wall of catheter block, and anti-2 front end of guard housing is equipped with the groove matched with shield top
5, groove 5 has certain guiding role, and to help shield 8 along needle tubing axial-movement, anti-2 rear end of guard housing is equipped with and wears for needle tubing 3
The needle stand pilot hole 7 crossed and matched with needle stand, needle stand pilot hole 7 are communicated with groove 5, the protection opposite with needle stand pilot hole 7
Cover 8 is equipped with the through-hole 12 for passing through for needle tubing 3 and matching with 3 protrusion 6 of needle tubing, is equipped with and 3 side wall phase of needle tubing in shield 8
The interior cantilever 10 of cooperation, interior 10 front end of cantilever, which is equipped with, is locked in the blocking portion in shield 8 for 3 head of needle tubing, after interior cantilever 10
End is fixedly connected with shield 8, the distance of interior 10 front end of cantilever to through-hole 12 greater than 3 protrusion 6 of needle tubing arrive needle tubing front end away from
From；
Under assembled state, needle tubing 3 passes through the through-hole 12 on needle stand pilot hole 7 and shield 8 on anti-guard housing 2, through interior outstanding
Arm 10 extends in conduit line from catheter block 1, and the outer cantilever 4 on anti-guard housing 2 opens on the lateral wall of catheter block 1, thus will
Anti- guard housing and shielding cover are mounted in the rear end of catheter block, and the blocking portion in shield 8 on cantilever 10 is pressed on 3 tube wall of needle tubing；
In needle tubing fallback procedure, when the protrusion 6 of needle tubing 3 is retreated to the through-hole 12 of shield 8, on interior cantilever 10
Blocking portion moves to the front on 3 head of needle tubing, so that 3 head of needle tubing is locked in shield 8 to prevent needle thorn automatically, is continuing
In fallback procedure, needle tubing 3 drives shield 8 to withdraw together in groove 5, and during withdrawing backward, shield 8 is by outer cantilever
4 strut, and anti-guard housing is unlocked, and take away flexible conduit together in company with needle tubing 3 and shield 8；
Outer cantilever 4 extends over shield before 8 rear direction of shield and is stuck on 1 outer wall of catheter block, be conducive to by
Anti- guard housing 2 and shield 8 are stably installed on catheter block, and anti-guard housing 2 is mounted on catheter block, are conducive to needle tubing and are being retreated
In the process by being limited to shield, to realize locking of the shield 8 to needle tubing, in addition, the shape inside groove 5 with
The outer shape of shield matches, and 5 depth of groove is less than or equal to the 1/2 of shield depth, is more advantageous to protection in this way
Cover housing plays the role of outer cantilever 4 on anti-guard housing 2 distracted.
The locking mechanism of anti-guard housing 2 is equipped on the lateral wall of the catheter block 1, the shield 8 and anti-guard housing 2 it
Between be equipped with locking mechanism unlocking mechanism.
The locking mechanism includes the card slot 11 being located on catheter block 1 and the fixture block matched with card slot 11, and fixture block is set
It sets on outer cantilever 4；
The unlocking mechanism includes that the convex for opening outer cantilever unlock locking mechanism is closed with 8 outer wall match profiles of shield
16 are played, internal projection 16 is located on the outer cantilever 4 at fixture block rear, is equipped with by the protection cover outer wall of front end and is matched with internal projection
Convex block 17, internal projection 16 is conducive to shield and smoothly struts outer cantilever 4, and convex block 17 can avoid after outer cantilever 4 struts because preventing
The shape of shield and be retracted into shield rear portion again, so that outer cantilever 4 be avoided to be locked on catheter block again, guarantee outer cantilever
4 smooth unlatching.
The blood back tube body 15 being arranged along the axis of needle tubing 3, the both ends of blood back tube body 15 and needle are equipped in 3 side of needle tubing
Pipe 3 is connected, and the blood back tube body 15 is in capillary, equipped with locking blood back tube body 15 at the through-hole 12 of shield 8
Bushing 9, blood back tube body 15 are located at the rear of 3 protrusion 6 of needle tubing, thus will not influence the cooperation of locking mechanism Yu 3 tube body of needle tubing,
The needle tubing side wall opposite with blood back tube body 15 is equipped with the baltimore groove for placing blood back tube body 15, and the blood back tube body 15 is located at spill
Connect in slot and with spill groove groove wall, so that blood back tube body 15 be connected integrally with 3 tube body of needle tubing, blood back tube body 15 is hidden
In needle tubing, the use of needle tubing will not influence.
The bushing 9 is equipped with the pipe sleeve 18 being coaxially disposed with shield 8, and pipe sleeve 18 and the hole wall of through-hole 12 are closely matched
It closes, pipe sleeve 18 is equipped with setting coaxial with through-hole 12 and for the aperture that needle tubing passes through, and the front end of pipe sleeve 18, which is provided with, is against blood back
Several oblique lattice framings 19 on tube body 15, oblique lattice framing 19 are fixedly connected with pipe sleeve 18, and oblique lattice framing 19 is along the circumferentially distributed of needle tubing.
The protrusion 6 of the needle tubing 3 is the bulge of crimping is formed two sides recess, and moulding process is simple.
There are two the settings of interior cantilever 10, is symmetrically arranged at 3 two sides of needle tubing, outer cantilever 4 and shield on anti-guard housing 2
Interior cantilever 10 is correspondingly arranged on 8, and needle tubing head is locked in shield to prevent needle thorn, protection by interior cantilever 10 in a manner of filling the span of a man's arms
Effect is more preferable.
Finger briquetting 14 is equipped on the anti-guard housing 2, finger briquetting 14 is dug outwardly, provides additional finger pressure surface
Catheter block is contacted to avoid finger, lowers the risk of infected patient.
Claims (10)
1. a kind of anti-needle pierces remaining needle, including needle core and flexible conduit, the flexible conduit is by conduit line, catheter block and positive crimping
Head composition, conduit line are connected between catheter block and positive pressure connector by extension tube on catheter block, the needle core packet
Needle tubing and needle stand are included, needle tubing is pierced by from conduit line through catheter block, it is characterised in that:
Activate the protection mechanism of locking pin tube head automatically when on the needle tubing equipped with extraction needle core, protection mechanism passes through needle tubing
On protrusion and needle tubing lock, when needle tubing is withdrawn drive protection mechanism retreat together；
The protection mechanism includes the shield covered on guide holder and the anti-guard housing for being located at shield rear, is set on anti-guard housing
There is outer cantilever of the Extender Card on catheter block outer wall forward, anti-guard housing front end is equipped with the groove matched with shield top, prevents
Guard housing rear end is equipped with the needle stand pilot hole for passing through for needle tubing and matching with needle stand, and needle stand pilot hole is communicated with groove, with needle stand
The opposite shield of pilot hole is equipped with the through-hole that passes through for needle tubing and match with needle tubing protrusion, is equipped in shield and needle
The interior cantilever that pipe side wall matches, interior cantilever front end, which is equipped with, is locked in the blocking portion in shield for needle tubing head, after interior cantilever
End is fixedly connected with shield, and the distance of interior cantilever front end to through-hole is greater than needle tubing protrusion to the distance of needle tubing front end；
Under assembled state, needle tubing passes through the through-hole on needle stand pilot hole and shield on anti-guard housing, through interior cantilever from catheter block
It extends in conduit line, the outer cantilever on anti-guard housing opens on the lateral wall of catheter block, thus by anti-guard housing and shielding cover
Mounted in the rear end of catheter block, the blocking portion in shield on cantilever is pressed on needle tubing tube wall；
Blocking portion movement in needle tubing fallback procedure, when the protrusion of needle tubing is retreated to the through hole of shield, on interior cantilever
To the front on needle tubing head, so that needle tubing head is locked in shield to prevent needle thorn, in continuing fallback procedure, needle automatically
Pipe drives shield to withdraw together in groove, and during withdrawing backward, shield struts outer cantilever, and anti-guard housing is solved
Lock, and flexible conduit is taken away together in company with needle tubing and shield.
2. anti-needle according to claim 1 pierces remaining needle, it is characterised in that: be equipped on the lateral wall of the catheter block anti-
The locking mechanism of guard housing is equipped with the unlocking mechanism of locking mechanism between the shield and anti-guard housing.
3. anti-needle according to claim 2 pierces remaining needle, it is characterised in that: the locking mechanism includes being located at catheter block
On card slot and the fixture block that is matched with card slot, fixture block be arranged on outer cantilever；
The unlocking mechanism includes that the internal projection for opening outer cantilever unlock locking mechanism is closed with protection cover outer wall match profiles, interior
Protrusion is located on the outer cantilever at fixture block rear.
4. anti-needle according to claim 3 pierces remaining needle, it is characterised in that: by the protection cover outer wall of front end be equipped with
The convex block that internal projection matches.
5. anti-needle according to claim 1 pierces remaining needle, it is characterised in that: be equipped with the axis along needle tubing in the needle tubing side
The blood back tube body of line setting, the both ends of blood back tube body are connected with needle tubing, and the blood back tube body is in capillary.
6. anti-needle according to claim 5 pierces remaining needle, it is characterised in that: in the through hole of shield equipped with locking blood back
The bushing of tube body.
7. anti-needle according to claim 6 pierces remaining needle, it is characterised in that: the bushing is equipped with same with shield through-hole
The hole wall of the pipe sleeve of axis setting, pipe sleeve and through-hole is fitted close, the front end of pipe sleeve be provided be against on blood back tube body it is several tiltedly
Lattice framing, oblique lattice framing is along the circumferentially distributed of needle tubing.
8. anti-needle according to claim 1 pierces remaining needle, it is characterised in that: the protrusion of the needle tubing is that crimping is formed
, two sides recess bulge.
9. anti-needle according to claim 1 pierces remaining needle, it is characterised in that: there are two the interior cantilever settings, symmetrically
Needle tubing two sides are located at, the outer cantilever on anti-guard housing is correspondingly arranged with cantilever interior on shield.
10. anti-needle according to claim 1 pierces remaining needle, it is characterised in that: be equipped with hand on the outer wall of the anti-guard housing
Refer to briquetting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821052232.1U CN209253818U (en) | 2018-07-04 | 2018-07-04 | A kind of anti-needle thorn remaining needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821052232.1U CN209253818U (en) | 2018-07-04 | 2018-07-04 | A kind of anti-needle thorn remaining needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209253818U true CN209253818U (en) | 2019-08-16 |
Family
ID=67557008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821052232.1U Withdrawn - After Issue CN209253818U (en) | 2018-07-04 | 2018-07-04 | A kind of anti-needle thorn remaining needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209253818U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108744146A (en) * | 2018-07-04 | 2018-11-06 | 江苏苏云医疗器材有限公司 | Anti- needle pierces remaining needle |
-
2018
- 2018-07-04 CN CN201821052232.1U patent/CN209253818U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108744146A (en) * | 2018-07-04 | 2018-11-06 | 江苏苏云医疗器材有限公司 | Anti- needle pierces remaining needle |
| CN108744146B (en) * | 2018-07-04 | 2023-09-19 | 江苏苏云医疗器材有限公司 | Needle-stick-preventing remaining needle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190816 Effective date of abandoning: 20230919 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190816 Effective date of abandoning: 20230919 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |