CN102824680A - Intravenous catheter introducer with needle retraction controlled by catheter hub seal - Google Patents
Intravenous catheter introducer with needle retraction controlled by catheter hub seal Download PDFInfo
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- CN102824680A CN102824680A CN2012102010598A CN201210201059A CN102824680A CN 102824680 A CN102824680 A CN 102824680A CN 2012102010598 A CN2012102010598 A CN 2012102010598A CN 201210201059 A CN201210201059 A CN 201210201059A CN 102824680 A CN102824680 A CN 102824680A
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- catheter
- entry needle
- catheter adapter
- sealing member
- needle
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Abstract
A passive intravenous ("IV") catheter introducer having a spring-biased needle retraction system that is triggered when the needle is manually withdrawn through a catheter hub seal. The catheter hub seal constricts to block the rearward flow of bodily fluid and wipe potentially infectious fluids off the outer surface of the needle as the needle is manually withdrawn through the catheter sheath and seal following insertion of the catheter into a patient's vein. No additional steps are needed to activate the needle retraction mechanism beyond manual removal of the needle from the catheter hub seal.
Description
Technical field
The present invention relates to a kind of intravenous (" IV ") catheter introducer, its entry needle with spring biasing is return system, entry needle by manually retracted when passing the polymer seal that is arranged in this catheter adapter (hub) this entry needle system of returning be triggered.
Background technology
The intravenous catheter inserter is known, and usually utilizes and insert the entry needle that passes flexible polymer jacket the tip of extending forward of this sheath is inserted into patient's vein.This kind catheter introducer comprises the handle or the piston portion of catheter adapter part and co-axial alignment usually.The blank area of the catheter introducer that some are conventional also comprises the fluid passage (port) that place the side; This fluid passage makes liquid to be inducted into the patient or to return from the patient through flow path of the liquid, and this flow path of the liquid is set up when needle point withdraws from this catheter sheath after the tip of extending forward of pin and conduit have been inserted into patient's vein.
Some conventional intravenous catheter inserters need with pin manually retracted to certain a bit, no longer be positioned at joint at this needle tip.Other conventional intravenous catheter inserters comprise a biasing apparatus for example entry needle return spring, this spring can be triggered or release so that entry needle is retracted in the syringe from a position, when triggering, still be positioned at patient's intravenous at this position needle tip.In case entry needle has penetrated patient's skin and vein, the clinical manipulation program requires this entry needle must not insert conduit again to prevent that conduit fractures or punctures unintentionally, catheter rupture or embolization catheter.
As usual manner, will be safe if can automatically be retracted in syringe or the handle with other health care personnels needle tip after use, particularly when needle tip carries blood load pathogen for the patient.Perhaps, when intention covers equipment that entry needle maybe will have a needle tip of exposure when directly placing sharp-pointed container once more, accidental entry needle takes place probably thrust the propagation with careless infection.
Summary of the invention
Herein disclosed is a kind of intravenous catheter inserter with the entry needle that can return automatically and the catheter adapter sealing member that matches.This catheter adapter sealing member matches with the conical inboard wall of this joint, needs the position so that entry needle and entry needle clamper are remained in respect to this catheter adapter and sheath, and the bias force that points to backward of antagonism withdrawal spring in the time before returning; When after conduit inserts patient's vein, passing catheter sheath and sealing member and manually pin being return potential infectiousness liquid is fallen from the outer surface erasing of this pin; Manually pass to compress after sealing member is return backward at needle tip then and flow out this joint backward with barrier liquid when liquid is got into or returns through the injection of side direction admission passage.
Description of drawings
With reference to accompanying drawing equipment of the present invention is further described and explains, wherein:
Fig. 1 is the front view of the preferred embodiment of intravenous catheter of the present invention;
Fig. 2 is the cross-sectional view along the amplification of the line 2-2 acquisition of Fig. 1;
Fig. 3 is the viewgraph of cross-section of the longitudinal axis that passes the intravenous catheter of Fig. 1; With
Fig. 4 is the cross-sectional view that passes syringe part of the intravenous catheter of Fig. 3, and the spring of wherein withdrawing is for lax, and the entry needle clamper has been pushed rearward with entry needle and proceeds to the interior recycling cavity of syringe.
Preferred implementation
Therefore the disclosed intravenous catheter inserter of this paper is return automatic entry needle with the catheter adapter sealing member that is in the appropriate location and is combined, in case whole liquid flow out catheter adapter backward when having prevented entry needle to return above sealing member.This is a kind of passive catheter inserter fully, does not wherein need extra step to start the entry needle retraction means the entry needle except self-conductance pipe seal part manually removes.The unidirectional backward insertion catheter sheath once more that moves the entry needle that has prevented increase through entry needle.
With reference to the embodiment of figure 1-4, intravenous catheter inserter 10 comprises catheter adapter 12, syringe 14, syringe end cap 16, catheter adapter sealing member 18; The horizontal wing 20, catheter sheath 22, inclination entry needle end 24, entry needle 25; Flat entry needle end 26, entry needle clamper 27, withdrawal spring 28, syringe front tip 30; Entry needle clamper front tip 31, side direction admission passage 32 refers to end stop 34, annular shoulder (syringe OD) 36; Catheter adapter flange 38, annular shoulder (syringe ID) 40, annular shoulder (entry needle clamper) 42 and entry needle are return chamber 44.Except entry needle 25, all parts of withdrawal spring 28 and catheter adapter sealing member 18 are all preferably by being applicable to that the plastics that in this kind armarium, use process.Catheter adapter sealing member 18 is preferably processed by polymeric material, is more preferably processed by elastomer material, and this elastomer is that liquid is impermeable fully, but its vertical hole with center setting is to receive entry needle 25.
During the manufacturing, catheter adapter sealing member 18 is positioned at catheter adapter 12 inside, and the front end 30 of syringe 14 passes catheter adapter flange 38 and is inserted into catheter adapter 12.Entry needle 25 coaxial catheter adapter sealing member 18 and the catheter sheath 22 of passing, and the tip end 24 that tilts is extended the extending end forward that surpasses catheter sheath 22 slightly.The outer surface of the front end 39 of syringe 14 can randomly frictionally combine with the conical inboard wall of catheter adapter 12; But this is optional, because the chucking power expection that is applied on the entry needle 25 through catheter adapter sealing member 18 is applied to the bias force on the entry needle clamper 27 greater than withdrawal spring 28.
Before medicated cap 16 being inserted in the rear aperture of syringes 14, the withdrawal spring coaxially is provided with in entry needle clamper 27 outsides in the place ahead of annular shoulder 42, and entry needle clamper 27 inserts forward and passes entry needle and return 44 and be compressed until the spring 28 of withdrawing.Assembly process, withdrawal spring 28 can remain in compressive state through a bar is inserted in the syringe 14.The longitudinal extension axis hole that flat terminal 26 of entry needle 25 will extend back and pass entry needle clamper 27; And through using cement or binding agent or being fixed in entry needle clamper 27 with other any similar effective means, these similar effective means are known for those of ordinary skills of the similar armarium of preparation to entry needle 25 with fixed relationship.When entry needle clamper 27 is positioned at syringe 14 when inner, forward towards entry needle clamper 27 annular shoulder 42 will near or possibly near syringe 14 inner backward towards annular shoulder 40 be provided with.When entry needle clamper 27 is in this position, the front end 31 of entry needle clamper will be close to but not contact catheter adapter sealing member 18.It is enough far away that the flat end 26 of entry needle 25 will extend beyond the hole of passing entry needle clamper 27, so that liquid is visible when beveled tip 24 is inserted vein, makes and can entry needle be return chamber 44 also as flash memory chamber (flash chamber).Perhaps, the beveled tip 24 that can be close to entry needle 25 is provided with a notch (not shown) so that blood in catheter sheath visual with the needle tip 24 confirming to tilt for the clinician who uses this equipment at intravenous.In case the part of extending forward of conduit 22 has got into vein, laterally the wing 20 and catheter adapter 12 will correct position taps (taped) on one's body the patient remove entry needle 25 from catheter adapter 12 before.
When intravenous catheter inserter such as Fig. 1-3 show that when being provided with, entry needle clamper 27 is kept with their lengthwise position with respect to catheter adapter 12 with entry needle 25, the compression stress that puts on through catheter adapter sealing member 18 around the handle of entry needle 25 is kept.Randomly, this compression stress also can be assisted through the frictional engagement between the inwall of the front end 39 of catheter adapter 12 and syringe 14.
After the front end of beveled tip of entry needle 25 24 and catheter sheath 22 inserts patient's vein, pin 25 will pass 18 withdrawals of catheter adapter sealing member.This refers to that through the adversary end stop 34 applies finger pressure power and accomplishes until the rear that the front tip 24 of pin 25 is positioned at catheter adapter sealing member 18 through manually pulling back syringe 14.This step is carried out through the clinician, and syringe 14 also breaks away from from joint 12, and the bias force backward that on the annular shoulder 42 of needle holder 27, applies through withdrawal spring 28 returns 44 to rear drive entry needle clamper 27 and the entry needle that spring 28 gets into syringe 14.When entry needle 25 is passed 18 withdrawals of catheter adapter sealing member, the bar of the entry needle 25 of when pushing around the entry needle 25, swiping downwards in the hole of catheter adapter sealing member 18.After catheter adapter 12 broke away from, as shown in Figure 4, the spring 28 of wherein withdrawing was lax for syringe 14, and whole length of entry needle 25 are positioned at entry needle and return 44.
Through the reading description and with reference to accompanying drawing; Other changes of the present invention and to revise to be conspicuous for those of ordinary skill of the present invention likewise, and estimate the only the wideest interpretation through the appending claims given legally of scope of the present invention disclosed herein.
Claims (14)
1. an intravenous catheter inserter comprises catheter adapter, and said catheter adapter has catheter sheath and the catheter adapter sealing member that places in the said catheter adapter; Penetrate said catheter adapter sealing member and pass the outstanding forward entry needle of said catheter sheath; Syringe; With the entry needle retraction means, said entry needle retraction means is through manually being activated said entry needle self-conductance pipe seal part withdrawal.
2. intravenous catheter inserter as claimed in claim 1 is characterized in that, said catheter adapter sealing member compression is wiped said entry needle to smear when said entry needle self-conductance pipe seal part manual refraction.
3. intravenous catheter inserter as claimed in claim 1 is characterized in that, said catheter adapter sealing member compression is flowed out said catheter adapter backward with barrier liquid after said entry needle passes said catheter adapter sealing member manual refraction.
4. intravenous catheter inserter; It comprises that catheter adapter and automatic entry needle return system; The said automatic entry needle system of returning has entry needle; Said entry needle penetrates the catheter adapter sealing member that places in the said catheter adapter, and said catheter adapter sealing member compression is to prevent that all liquid flows out said catheter adapter backward after said entry needle withdrawal surpasses said sealing member.
5. complete passive catheter inserter, it has entry needle and catheter sheath, it is characterized in that, through moving said entry needle and prevent that said entry needle is inserted into said catheter sheath once more from said catheter sheath being unidirectional backward.
6. intravenous catheter inserter, it comprises:
Catheter adapter with the catheter sheath of extending forward;
Be arranged at the catheter adapter sealing member in the said catheter adapter;
The syringe of preceding end with rear opening of the said catheter adapter that can be inserted into said catheter adapter sealing member back facing to the closed back end of selectivity terminal before said, and is arranged at and returns the chamber between the end of terminal and said back before said;
Entry needle, said entry needle pass the axis hole in the said catheter adapter sealing member and have the tip of the inclination of giving prominence to forward from said catheter sheath; With
The entry needle that is positioned at said syringe is return assembly; Said entry needle is return assembly and is comprised entry needle clamper and withdrawal spring, and said entry needle clamper and the entry needle position with respect to said catheter adapter and catheter sheath before the compression stress that puts on said entry needle through said catheter adapter sealing member is regained is held.
7. intravenous catheter inserter as claimed in claim 6; It is characterized in that the front tip of said syringe makes the withdrawal spring can act on said entry needle clamper from the withdrawal of said catheter adapter and said entry needle from the withdrawal of said catheter adapter sealing member and makes said entry needle clamper and the said chamber of returning of entry needle entering with entry needle.
8. intravenous catheter inserter as claimed in claim 6 is characterized in that, said catheter adapter sealing member is processed by polymeric material.
9. intravenous catheter inserter as claimed in claim 8 is characterized in that, said catheter adapter sealing member is processed by elastomer material.
10. intravenous catheter inserter as claimed in claim 7; Also comprise side direction liquid admission passage, said side direction liquid admission passage is arranged at the place ahead of said catheter adapter sealing member and after said entry needle is return, provides with the internal liquid of said catheter adapter and is communicated with.
11. intravenous catheter inserter as claimed in claim 10 is characterized in that, said catheter adapter sealing member is set to close said axial hole and form liquid sealant after the withdrawal of said hole at said pin.
12. intravenous catheter inserter as claimed in claim 7; It is characterized in that; It is terminal that said entry needle comprises the back; End rear at said entry needle clamper after said needle tip is inserted into the patient in said back shows flow of liquid, therefore can make the said chamber of returning during inserting, also be used as the flash memory chamber.
13. intravenous catheter inserter as claimed in claim 7 is characterized in that, said syringe, and catheter adapter and entry needle clamper are processed by one or more mouldable fluoropolymer resins.
14. intravenous catheter inserter as claimed in claim 6 is characterized in that, said entry needle clamper be configured such that said inclined needle tip with respect to said conduit lining up towards.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201161498230P | 2011-06-17 | 2011-06-17 | |
| US61/498,230 | 2011-06-17 | ||
| US13/494,646 | 2012-06-12 | ||
| US13/494,646 US20120323181A1 (en) | 2011-06-17 | 2012-06-12 | Intravenous Catheter Introducer with Needle Retraction Controlled by Catheter Hub Seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102824680A true CN102824680A (en) | 2012-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102010598A Pending CN102824680A (en) | 2011-06-17 | 2012-06-18 | Intravenous catheter introducer with needle retraction controlled by catheter hub seal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103961763A (en) * | 2014-05-08 | 2014-08-06 | 齐凤芹 | Intravenous puncture needle |
| CN110621372A (en) * | 2017-04-03 | 2019-12-27 | 贝克顿·迪金森公司 | IV catheter with integrated extension set and spring-driven needle safety |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5865806A (en) * | 1996-04-04 | 1999-02-02 | Becton Dickinson And Company | One step catheter advancement automatic needle retraction system |
| CN101983079A (en) * | 2007-11-14 | 2011-03-02 | Shl集团有限责任公司 | Automatic injection device with actively triggered syringe withdrawal |
| CN102068747A (en) * | 2009-11-24 | 2011-05-25 | 回缩技术股份有限公司 | Catheter introducer with hub seal and removal tab |
| CN103596616A (en) * | 2011-01-31 | 2014-02-19 | 血管途径公司 | Intravenous catheter and insertion device with reduced blood spatter |
-
2012
- 2012-06-18 CN CN2012102010598A patent/CN102824680A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5865806A (en) * | 1996-04-04 | 1999-02-02 | Becton Dickinson And Company | One step catheter advancement automatic needle retraction system |
| CN101983079A (en) * | 2007-11-14 | 2011-03-02 | Shl集团有限责任公司 | Automatic injection device with actively triggered syringe withdrawal |
| CN102068747A (en) * | 2009-11-24 | 2011-05-25 | 回缩技术股份有限公司 | Catheter introducer with hub seal and removal tab |
| CN103596616A (en) * | 2011-01-31 | 2014-02-19 | 血管途径公司 | Intravenous catheter and insertion device with reduced blood spatter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103961763A (en) * | 2014-05-08 | 2014-08-06 | 齐凤芹 | Intravenous puncture needle |
| CN110621372A (en) * | 2017-04-03 | 2019-12-27 | 贝克顿·迪金森公司 | IV catheter with integrated extension set and spring-driven needle safety |
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