CN102000370B - Retention needle tube assembly - Google Patents
Retention needle tube assembly Download PDFInfo
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- CN102000370B CN102000370B CN 201010278203 CN201010278203A CN102000370B CN 102000370 B CN102000370 B CN 102000370B CN 201010278203 CN201010278203 CN 201010278203 CN 201010278203 A CN201010278203 A CN 201010278203A CN 102000370 B CN102000370 B CN 102000370B
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- needle
- handle
- needle stand
- connecting elements
- tube assembly
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Abstract
The invention relates to an instrument for introducing medium into bodies, particularly a retention needle tube assembly which comprises a connecting component, a retractable protective sleeve, a needle stand and a needle tube. The retention needle tube assembly is structurally characterized by also comprising an extension spring, wherein the retractable protective sleeve is enclosed in the inner cavity of the needle stand after being compressed; and the connecting component, is connected with the needle stand through a buckling device. The invention has the technical characteristics that the extension spring is arranged in the retention pin with the retractable protective sleeve; and in the piercing process, the needle stand and the retractable protective sleeve are unfolded under the action of the spring, the needle tube retreats from the guide tube along with the needle stand and finally leaves the guide tube assembly to enter the retractable protective sleeve, and meanwhile, the connecting component, is held by a hand so as to feed the guide tube into deep inside vessels. In the piercing process, the needle point is no longer exposed outside the port of the guide tube, so that the needle point can not hurt the vessel when feeding the tube, thereby preventing angitis from generation. As for the medical care operators, the operation success rate is high; and as for the patients, injury and pain from piercing again can be prevented.
Description
Technical field
The present invention relates to a kind of medium be introduced apparatus, particularly a kind of retention needle tube assembly in the body.
Background technology
In the prior art, a kind of telescopic protective cover that has is arranged, can prevent the remaining needle of stabbing, specifically can be with reference to Chinese patent ZL200920139686.7.This kind remaining needle includes conduit tube component and needle tubing assembly; conduit tube component includes soft conduit, the catheter block that is connected with conduit one end and the handle that is connected with catheter block; the needle tubing assembly comprises scalable, and the protective sleeve that forms of nestable some slide bars and the needle stand that rigidity puncture needle tubing is installed.Before the use, the puncture needle tubing is plugged in the conduit, and exposes needle point, and protective sleeve is compressive state, and is flexibly connected with catheter block.During use; at first will be with the puncture needle tubing puncture intravasation of conduit by one-handed performance; and the application of force is together sent conduit and needle tubing into the blood vessel depths; pin on the other hand afterwards handle A/C assembly; guarantee that catheter retaining is in blood vessel; another pulls moving protective sleeve makes it away from conduit tube component, stretches needle tubing to be withdrawed from conduit and conduit tube component thereby drive protective sleeve, and needle tubing is entered in the protective sleeve fully.
The weak point of above-mentioned remaining needle is: 1, after puncture; because needing full extension to open, protective sleeve the puncture needle tubing could be included in its protective sleeve; but in actual the use; because slider bar travel is long, protective sleeve occurring does not easily also have full extension to open, and has just withdrawn conduit tube component; cause needle tip still to be exposed outside; this moment, protective sleeve lost the effect that comprises to needle tubing, needle point occurs easily stab accident, brought medical care problem.2, after the puncture needle tubing was finished puncture, needle point still was exposed at outside the catheter port, and is admitted to together the blood vessel depths with conduit, if misoperation, perhaps the blood vessel condition is bad, and needle point very easily scratches tunica intima, causes vasculitis; Send in the pipe process, needle point is piercing blood vessel again also, causes and puts tube failure, causes client need to bear grieved and the misery of puncture again.
Summary of the invention
The object of the invention is to overcome weak point of the prior art and provide a kind of and avoid occuring that needle point is stabbed, the automatic retention needle tube assembly of the withdraw of the needle.
The objective of the invention is to realize by following approach:
The retention needle tube assembly, include connecting elements, telescopic protective cover, needle stand and needle tubing, one end of connecting elements is connected with the conduit tube component of remaining needle, the other end is connected with needle stand by telescopic protective cover, and an end of needle tubing is installed on the needle stand, and its structural feature is, also include the stretching, extension spring, after the telescopic protective cover compression, be placed around in its inner chamber by needle stand, connecting elements is connected with needle stand by a kind of fastening device; One end of stretching spring is connected with connecting elements, and the other end is installed in the needle stand inner chamber.
When mounted; needle stand contains round the telescopic protective cover of compression and the stretching, extension spring that is compressing, and is connected with connecting elements by fastening device, and needle tubing sequentially passes telescopic protective cover and connecting elements inner chamber; puncture is in the conduit tube component of remaining needle, and needle point exposes outside catheter port.During use, finish first puncture, namely needle tubing is with the conduit intravasation that punctures; then open the fastening device on connecting elements and the needle stand, the stretching, extension spring of compression slowly launches, and drives the relative connecting elements motion of needle stand and telescopic protective cover; away from conduit tube component; at this moment, needle tubing is along with conduit is recessed in the motion of needle stand gradually, and needle point submerges in the conduit; and finally leave conduit tube component and enter in the telescopic protective cover; meanwhile, operator are hand-held connecting elements further, and conduit is sent into the blood vessel depths.
Like this, in operation, needle tubing just can fall back in the telescopic protective cover automatically, realizes that the limit send the technique effect of the tube edge withdraw of the needle so that protective sleeve can be after needle tubing be finished puncture realization to the effect that comprises of needle tubing, avoid bringing needle point the medical care problem such as to stab; In addition, because after finishing puncture, it is just unfolded to stretch spring, drive needle tubing away from conduit tube component, when sending pipe, needle point no longer is exposed at outside the catheter port, and conduit can not damage blood vessel originally as soft tube, therefore concerning the medical care operator, it is operable to the power height, for patients, and the misery that then can avoid injury and need again to puncture.
Connecting elements can further be specially:
Connecting elements is a kind of adapter sleeve.Or:
Connecting elements includes adapter sleeve and handle, and adapter sleeve one end is connected with the conduit tube component of remaining needle, and the other end then is connected with handle, and handle then is connected with needle stand by telescopic protective cover.
Like this, connecting elements can be a kind of adapter sleeve, is used for connecting duct assembly and telescopic protective cover, can be used as simultaneously hand-held member, and convenient operation person operates; Connecting elements can also be the member that adapter sleeve and handle form, adapter sleeve connecting duct assembly, and handle connects telescopic protective cover, and as hand-held member.
Thereby, when connecting elements comprises adapter sleeve and handle, can further be specially:
Have one on the adapter sleeve and push away handle, its conductive pipe assembly direction is extended, and at one end section is upwards curved, curved pushing surface.
Push away handle and can be used for auxiliary pipe-conveying, operator's finger is pressed to the arc pushing surface, counteracting force of this pushing surface feedback, and adapter sleeve is just towards the duct direction motion, thus the drive catheter propelling is in blood vessel.By this member, realized laborsaving, easily with the catheter propelling on the conduit tube component to the blood vessel depths.
Be provided with horizontal tread plate in the arc pushing surface, the bearing of trend of this tread plate is vertical with the axis of connecting elements, and is perhaps in a certain angle, can further realize so laborsaving and easily operation.
This pushes away handle can also realize that one-handed performance finishes the limit and push the conduit intravasation, the technique effect of the limit recession withdraw of the needle, specifically:
One end of adapter sleeve is arranged in an end inner chamber of handle, and the two formation is slidingly connected.
That is to say that adapter sleeve and handle are socket, be a kind of telescopic connection structure; like this; behind remaining needle needle point and the first intravasation of catheter proximal end, thumb and middle finger clamp handle, maintain static; because handle has limited the activity of protective sleeve and needle stand; therefore it is motionless to enter the blood vessel place at the beginning of needle tubing also is located in, and forefinger pushes adapter sleeve forward by the handle that pushes away that is pressed on the adapter sleeve; walk to vessel directions thereby promote conduit tube component, conduit is sent into the blood vessel depths the most at last.
Like this send the pin mode, can avoid needle tubing with conduit intravasation depths, scratch blood vessel, can also realize the technical advantage of one-handed performance, and can allow the operator vacate the fastening device that a hands removes to open back door connecting elements and needle stand, realize sending fast and effectively the pin mode.
Stretching, extension spring of the present invention can further be specially:
Stretch spring and be positioned at the protective sleeve inner chamber.Therefore so easy normal use that affects needle tubing, preferably, is stretched spring and is contained round telescopic protective cover, is positioned on the telescopic protective cover peripheral sides.
When connecting elements was adapter sleeve and handle combination, the position that the stretching, extension spring is connected with connecting elements can be adapter sleeve, can also be the medial surface of handle.When adapter sleeve and handle were telescopic being slidingly connected, this link position can be positioned at because being slidingly connected on the step surface that the handle medial surface forms.
Fastening device of the present invention can further be specially:
Fastening device is a kind of " L " v notch v button hole at connecting elements, is a kind of buckle at needle stand.
During installation, buckle is pressed in " L " v notch v, and needle stand is reversed, thereby make the buckle inlay card in this " L " shape button hole.During operation, with the needle stand turn-back, make buckle deviate from this button hole, and skid off along breach, realize that needle stand breaks away from connecting elements, stretching under the spring action, away from connecting elements.
Another kind of structure is:
Fastening device is a kind of hole clipping at connecting elements, is a kind of handle buckle at needle stand.
The handle buckle has a fulcrum, is installed on the needle stand end, and a side is jag, and opposite side is pressure handle, and the two forms a kind of lever construction centered by fulcrum.During installation, the jag of buckle can embed hole clipping, forms snapping.During operation, press pressure handle, jag just upsprings from hole clipping, realizes the disengaging of connecting elements and needle stand.
Fastening device preferably adopts the dual-lug type snapping, and a fastening device namely is installed respectively on the axial slices point of symmetry of needle stand and connecting elements, like this, install and transportation in, not being connected and can coming off easily between needle stand and the connecting elements causes inefficacy.
In sum; technical essential of the present invention is: install in the remaining needle of telescopic protective cover and stretch spring; in piercing process; needle stand and telescopic protective cover can launch under the effect of spring, so that needle tubing is along with conduit is recessed in the motion of needle stand gradually, needle point submerges in the conduit; and finally leave conduit tube component and enter in the telescopic protective cover; meanwhile, operator are hand-held connecting elements further, and conduit is sent into the blood vessel depths.The present invention has following advantage compared to existing technology: the piercing process needle point no longer exposes outside catheter port, can not damage blood vessel when sending pipe, avoid vasculitic generation, simultaneously concerning the medical care operator, it is operable to the power height, for patients, the misery that then can avoid injury and need again to puncture.
Description of drawings
Accompanying drawing 1 is depicted as the structural representation of remaining needle of the present invention, comprises conduit tube component and needle tubing assembly;
Accompanying drawing 2 is the structural representation of the remaining needle (comprising conduit tube component and needle tubing assembly) after the installation of the present invention, before the use, and the stretching, extension spring section is partial sectional view; Fig. 2 a is the structural representation of described fastening device on handle, and Fig. 2 b is the structural representation of this fastening device on needle stand;
Accompanying drawing 3 is the described surface structure sketch map with remaining needle of another kind of fastening device of the embodiment of the invention; Fig. 3 a is the structural representation of this fastening device on handle, and Fig. 3 b is the structural representation of this fastening device on needle stand;
Accompanying drawing 4 is the cutaway view of Fig. 2;
Accompanying drawing 5 is depicted as the Split type structure sketch map of the described connecting elements of the embodiment of the invention;
Below we are described further the present invention in conjunction with the embodiments.
The specific embodiment
Most preferred embodiment:
With reference to accompanying drawing 1, the retention needle tube assembly includes connecting elements 1, telescopic protective cover 2, needle tubing 3, stretches spring 4, needle stand 5; Connecting elements 1 includes adapter sleeve 11 and handle 12, and telescopic protective cover 2 includes little slide bar 21 and large slide bar 22; Needle tubing 3 is installed in the needle stand 5 by a kind of connecting rod 8.
On the basis of accompanying drawing 1 with reference to accompanying drawing 5, the inner chamber of adapter sleeve 11 is from front end to the rear end stairstepping, be sequentially needle lumen, separate cavities and internal cavity, the peripheral shape of needle lumen is a kind of boss 111, separate cavities 112 is a kind of inverted cone chamber, fill in batching pig 114 in interior, internal cavity 113 is cylindrical cavity, and three chamber concentric stageds distribute.Integrated on the peripheral sides of adapter sleeve have a kind of handle 13 that pushes away, and this pushes away handle and extends along central shaft conductive pipe assembly 6 directions, and at the tail end prying that makes progress, form an arc pushing surface, is distributed with some anti-slip veins on the arc pushing surface.
The front end boss 111 of adapter sleeve 11 is connected with conduit tube component 6, rearward end embeds in the front side inner chamber of handle 12, edge, rear end at adapter sleeve 11 is a kind of step surface that turns up, the front end edge of handle 12 is the step surface that colludes in a kind of, the two relative limit, after adapter sleeve 11 embedded handles 12 inner chambers, the two can relative sliding, the operation that stretches and compress.
With reference to accompanying drawing 1 and accompanying drawing 4; large slide bar 22 in the telescopic protective cover 2 is connected with needle stand 5; the one end interlocking of little slide bar 21 is in the internal cavity 111 of adapter sleeve 11; form a kind of connection that can relative sliding in a kind of mode of relative limit, namely can relative sliding between adapter sleeve 11 and the little slide bar 21.In addition, can be placed around under the prerequisite in the telescopic protective cover 2 satisfying needle tubing 3, adapter sleeve 11 can also be fixedly connected with little slide bar 21.
An end that stretches spring 4 is installed on the interior step surface at handle 12 middle parts, and the other end then is installed on the step surface of needle stand 5 intracavity bottoms, can be with reference to accompanying drawing 1,2,4.
A kind of shown in accompanying drawing 2 and accompanying drawing 2a, 2b, fastening device 7 is a kind of " L " v notch v button holes 71 at handle 12, is a kind of buckle 72 at needle stand.During installation, buckle 72 is pressed in " L " v notch v 71, and reverses needle stand 5, thereby make buckle 72 inlay cards in this " L " shape button hole 71.During operation, with needle stand 5 turn-backs, make buckle 72 deviate from this button hole 71, and skid off along breach, needle stand 5 just can break away from handle 12.
Another kind is shown in accompanying drawing 3 and accompanying drawing 3a, 3b, and fastening device 7 is a kind of hole clipping 73 at handle 12, is a kind of handle buckle 74 at needle stand 5.Handle buckle 74 has a fulcrum, is installed on the needle stand 5 end edgewise, and a side is jag, and opposite side is pressure handle, and the two forms a kind of lever construction centered by fulcrum.During installation, the jag of buckle 74 can embed hole clipping 73, forms snapping.During operation, press pressure handle, jag just upsprings from hole clipping 73, realizes that needle stand 5 breaks away from handle 12.
Above-mentioned fastening device 7 adopts the dual-lug type snapping, and a fastening device namely is installed respectively on the axial slices point of symmetry of needle stand 5 and handle, sees shown in accompanying drawing 2b and the 3b.
The use principle of retention needle tube assembly of the present invention is as follows:
During installation, such as accompanying drawing 2 and accompanying drawing 3, needle tubing 2 punctures are in conduit tube component 6; and expose needle point in an end of conduit 61; telescopic protective cover 2 and stretching, extension spring 4 are compressive state, are placed around in its inner chamber by needle stand 5 and handle 12, and needle stand 5 is connected by fastening device 7 with handle 12 simultaneously.
During operation; first by the needle point puncture vessel; and leader tape conduit intravasation; when sending pipe; thumb and middle finger clamp handle 12; forefinger is pressed by pushing away on the handle 13, and fixed handle 12 is motionless, and forefinger pushes away adapter sleeve 11 forward by the handle 14 that pushes away on the adapter sleeve 11; simultaneously; open fastening device 7, under the effect of stretching spring 4, large slide bar and the little slide bar of telescopic protective cover 2 sequentially trail; needle stand 5 drives needle tubing 2 and draws back; forefinger promoted adapter sleeve 11 and drove conduits 61 and move to the blood vessel depths this moment, until conduit 61 is sent into blood vessel fully, had realized that withdraw of the needle limit, limit send the technical characterstic of pipe.
It is same as the prior art that the present invention does not state part.
Claims (8)
1. retention needle tube assembly, include connecting elements (1), telescopic protective cover (2), needle stand (5) and needle tubing (3), one end of connecting elements (1) is connected with the conduit tube component (6) of remaining needle, the other end is connected with needle stand (5) by telescopic protective cover (2), one end of needle tubing (3) is installed on the needle stand (5), it is characterized in that, also includes to stretch spring (4), after telescopic protective cover (2) compression, be placed around in its inner chamber by needle stand (5); Connecting elements (1) includes adapter sleeve (11) and handle (12), adapter sleeve (11) one ends are connected with the conduit tube component (6) of remaining needle, the other end then is connected with handle (12), and handle (12) is connected with needle stand (5) by a kind of fastening device (7); One end of stretching spring (4) is connected with connecting elements (1), and the other end is installed in needle stand (5) inner chamber.
2. retention needle tube assembly according to claim 1 is characterized in that, has one on the connecting elements (1) and pushes away handle (13), and its conductive pipe assembly (6) direction is extended, and at one end section is upwards curved, curved pushing surface.
3. retention needle tube assembly according to claim 2 is characterized in that, is provided with horizontal tread plate in the arc pushing surface, and the bearing of trend of this tread plate is vertical with the axis of connecting elements (1).
4. retention needle tube assembly according to claim 1 is characterized in that, an end of adapter sleeve (11) is arranged in an end inner chamber of handle (12), and the two formation is slidingly connected, and is a kind of telescopic connection structure.
5. retention needle tube assembly according to claim 1 is characterized in that, stretches spring (4) and contains round telescopic protective cover (2), is positioned on telescopic protective cover (2) peripheral sides.
6. retention needle tube assembly according to claim 1 is characterized in that, fastening device (7) is a kind of " L " v notch v button hole (71) at connecting elements (1), is a kind of buckle (72) at needle stand (5).
7. retention needle tube assembly according to claim 1 is characterized in that, fastening device (7) is a kind of hole clipping (73) at connecting elements (1), is a kind of handle buckle (74) at needle stand.
8. retention needle tube assembly according to claim 7 is characterized in that, handle buckle (74) has a fulcrum, is installed on needle stand (5) end, and a side is jag, and opposite side is pressure handle, and the two forms a kind of lever construction centered by fulcrum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010278203 CN102000370B (en) | 2010-09-08 | 2010-09-08 | Retention needle tube assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010278203 CN102000370B (en) | 2010-09-08 | 2010-09-08 | Retention needle tube assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102000370A CN102000370A (en) | 2011-04-06 |
| CN102000370B true CN102000370B (en) | 2013-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010278203 Active CN102000370B (en) | 2010-09-08 | 2010-09-08 | Retention needle tube assembly |
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| Country | Link |
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| CN (1) | CN102000370B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105727396B (en) * | 2016-02-06 | 2023-03-24 | 湛江健力源医疗用品有限公司 | Safety remaining needle |
| CN107320143B (en) * | 2017-07-02 | 2018-08-14 | 常州瑞索斯医疗设备有限公司 | A kind of surgery needle holder with protective device |
| CN110585520A (en) * | 2019-09-27 | 2019-12-20 | 苏州林华医疗器械股份有限公司 | Negative pressure type visible blood return retaining needle for jugular vein |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1277874A (en) * | 1999-06-22 | 2000-12-27 | 刘文能 | Multi-purpose, safety and full automatic type long term retainable needle for intravenous transfusion |
| CN201049106Y (en) * | 2007-04-10 | 2008-04-23 | 陈永曦 | Protective cover for needle |
| CN201414968Y (en) * | 2009-05-31 | 2010-03-03 | 广东龙心医疗器械有限公司 | Disposable safe venous retention needle |
| CN201807011U (en) * | 2010-09-08 | 2011-04-27 | 陈永曦 | Needle tube assembly of retaining needle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7534232B2 (en) * | 2007-01-05 | 2009-05-19 | Nipro Corporation | Indwelling needle |
-
2010
- 2010-09-08 CN CN 201010278203 patent/CN102000370B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1277874A (en) * | 1999-06-22 | 2000-12-27 | 刘文能 | Multi-purpose, safety and full automatic type long term retainable needle for intravenous transfusion |
| CN201049106Y (en) * | 2007-04-10 | 2008-04-23 | 陈永曦 | Protective cover for needle |
| CN201414968Y (en) * | 2009-05-31 | 2010-03-03 | 广东龙心医疗器械有限公司 | Disposable safe venous retention needle |
| CN201807011U (en) * | 2010-09-08 | 2011-04-27 | 陈永曦 | Needle tube assembly of retaining needle |
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| Publication number | Publication date |
|---|---|
| CN102000370A (en) | 2011-04-06 |
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Owner name: FUJIAN BESTWAY MED-MACROMOLECULE CORP. Free format text: FORMER OWNER: CHEN YONGXI Effective date: 20120723 |
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Effective date of registration: 20120723 Address after: Fuzhou City, Fujian province 350004 Industrial Road, Taijiang District No. 193 Baolong city square southwest side Xiaobailou 2 layer 202 Applicant after: FUJIAN BESTWAY MEDICAL POLYMER Corp. Address before: Fu Taijiang Village District of Fuzhou City, Fujian province 350005 15 3 Building No. 305 Applicant before: Chen Yongxi |
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