CN201595906U - Arterial and venous puncture needle with novel structure and function - Google Patents
Arterial and venous puncture needle with novel structure and function Download PDFInfo
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- CN201595906U CN201595906U CN2009200728282U CN200920072828U CN201595906U CN 201595906 U CN201595906 U CN 201595906U CN 2009200728282 U CN2009200728282 U CN 2009200728282U CN 200920072828 U CN200920072828 U CN 200920072828U CN 201595906 U CN201595906 U CN 201595906U
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- puncture needle
- draw point
- wear
- needle
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Abstract
The utility model relates to a novel arterial and venous puncture needle. At present, a blood vessel puncture needle can not judge whether an outer thimble enters a blood vessel, and the success rate of imbedding the outer thimble after puncturing is not high. The novel arterial and venous puncture needle changes the structure and the function of an existing venous puncture needle, judges whether the outer thimble enters arteries and veins, and increases the success rate of imbedding thimble after puncturing is increased. The novel arterial and venous puncture needle is characterized in that the outer surface of an inner steel puncture needle and the inner wall of an outer soft thimble are designed with grooves, or the caliber of a rear part of the inner steel puncture needle is reduced, and a gap between the outer steel puncture needle and the inner steel puncture needle is increased. The top end of the outer thimble is designed with a small gap, whether the outer thimble enters the blood vessels is judged through blood which flows out along the grooves, the length of the outer soft thimble is increased, an inclination angle of an inclined plane of a needle tip of the inner steel puncture needle is increased, and the possibility that the inner steel puncture needle penetrates a blood on the opposite surface is reduced through changing the inclined plane of the needle tip of the inner steel puncture needle to be downward. The inner and the outer walls of a puncture steel needle and the inner wall of the outer thimble are provided with anti-clotting coatings, thereby preventing the inner steel puncture needle or the groove from being blocked by small blood clots after repeatedly probing to push the needle.
Description
Technical field
The present invention relates to a kind of puncture needle that is widely used in medical purpose, particularly a kind of arteriovenous puncture needle.
Background technology
The artery and vein puncture needle is a medical field apparatus commonly used.Major operation patient, part Intensive Care Therapy patient need arterypuncture to put pipe monitor blood flow dynamics index (as mean arterial pressure, systolic pressure, diastolic pressure or the like); Nearly all surgical patient all needs puncture and intubation, infuses to set up the peripheral vein path.In this operating process, need use puncture needle.
Domestic and international widely used arterial puncture needle has two kinds at present: 1) utilize venipuncture needle puncture tremulous pulse, its shortcoming is to judge whether trocar sheath (needing to keep somewhere pressure measurement) enters tremulous pulse.Wear draw point intravasation when interior, and trocar sheath causes puncture failure (more common the atherosclerotic) not during intravasation easily; 2) special-purpose arterial puncture needle: on the basis of venipuncture needle, wear in interior that draw point is inner to increase a stone dead wire, when interior wear draw point and penetrate tremulous pulse after, send into stone dead wire and guide, insert trocar sheath then.Its shortcoming has four aspects: 1. this pin thick (because in wear the draw point the inside set up soft seal wire), and bigger to patient's local damage, especially repeatedly during exploratory puncture; 2. wear in stone dead wire is arranged in the draw point, when interior when wearing draw point and penetrating tremulous pulse, the blood back-flow velocity is very slow, wear the time lengthening of draw point tip location in the judgement, in wear the draw point top and penetrate easily vascellum laterale, insert trocar sheath failure (though be provided with three small gaps on the interior draw point surface of wearing, this problem is not well solved yet) after causing puncture; 3. because of needs stone dead wire is inserted tremulous pulse, may cause the endarterium damage; 4. cost is big, the cost height.
By retrieval, domestic also have entity and individual that arterial puncture needle is studied, as 01216233.7.Can not judge the whether patent of intravasation of trocar sheath but retrieve.
Summary of the invention
The present invention proposes the artery and vein puncture needle of a kind of new structure and function, can judge whether trocar sheath enters artery and vein, improves the puncture success rate of rearmounted pipe of artery and vein.Basic design of the present invention is: pass through the whole bag of tricks, wear the space between draw point and the trocar sheath in designing, when trocar sheath enters or touch blood vessel, there is blood to flow out, can judges whether trocar sheath contacts or intravasation from interior wearing between draw point and the trocar sheath.
As the first kind of scheme that realizes that the present invention conceives substantially, at the interior cylindrical outer surface of wearing draw point groove is set, make the overcoat flexible pipe and in wear and occur the space between the draw point (groove can have various ways, as linear, spiral type, waveform, linear, first straight line spiral type etc. then behind the first spiral half-turn, groove quantity also can one or more.Wherein, the linear groove can be arranged on and be convenient to the one side that the operator observes; The advantage of spiral type or waveform groove is to increase blood in the mobile time of groove, is convenient to doctor's operation; Rectilinear advantage is behind elder generation's spiral half-turn: because the trocar sheath lower wall contacts blood vessel earlier, so wear the draw point lower wall in the groove breach is arranged on, the contact blood vessel promptly has blood to flow out through groove when the lower wall top, around keeping straight on to the puncture needle surface again, is convenient to the operator and observes behind the spiral half-turn).Groove also can accommodation be designed to this mode: in wear the vertical bore of draw point and remain unchanged, the rear section bore dwindles, bore increases (being the outer sleeve inner wall attenuation) in the corresponding trocar sheath, with increase the overcoat flexible pipe and in wear space between the draw point, be beneficial to blood and reflux.If the groove tip designs is at the interior draw point upper wall of wearing, the tip of groove can exceed the trocar sheath top a little, and the top that helps rapider judgement trocar sheath has entered tremulous pulse (Figure 11).
As the second kind of scheme that realizes that the present invention conceives substantially, can on the inwall of overcoat flexible pipe, groove be set, corresponding with the interior groove of wearing draw point, increase the overcoat flexible pipe and in wear space between the draw point (alternatives of groove with in wear the groove of draw point, omit herein).
As the third scheme that realizes that the present invention conceives substantially, breach can be set on the top of overcoat flexible pipe (can different shape, as " u ", " v " font breach), increase most advanced and sophisticated blood flow rate, help blood and enter gap between trocar sheath and the draw point fast, be beneficial to the operator and judge the most advanced and sophisticated position relation with blood vessel of trocar sheath rapidly.
As the improvement of above-mentioned three kinds of technical schemes, the probability that draw point penetrates the opposite blood vessel is worn at the angle of inclination of wearing the draw point needle slope in can increasing in the minimizing.
As the improvement of above-mentioned three kinds of technical schemes, can increase the length of overcoat flexible pipe, shorten the overcoat flexible pipe and in wear the draw point syringe needle distance, timely blood back, reaction puncture situation penetrates the probability of opposite blood vessel to wear draw point in reducing.
As the improvement of above-mentioned three kinds of technical schemes, can in wear draw point needle slope be set to downwards (existing puncture needle inclined-plane all up), penetrate the probability of opposite blood vessel to wear draw point in reducing, improve and insert the success rate (seeing Fig. 9 and Figure 10) of trocar sheath.
Further improvement as above-mentioned three kinds of technical schemes, can on puncture inside and outside surface of draw point and overcoat hose inner wall, anticoagulant coating (as heparin coating) be set, when reducing repeatedly exploratory puncture, in wear the probability that draw point and overcoat flexible pipe are blocked by little blood clot easily, improve puncture success rate.
As the improvement of above-mentioned three kinds of technical schemes, can with in wear the draw point groove the top exceed trocar sheath a little, be beneficial to judge more rapidly that (annotate: during puncture, the trocar sheath lower wall is introduced into blood vessel, Figure 11) for the position relation of trocar sheath and blood vessel.
As the improvement of above-mentioned three kinds of technical schemes, can increase trocar sheath rear end volume, purpose is to enlarge the telescopic outside storage capacity of blood, is convenient to the operator and uses.
Since above-mentioned arteriovenous puncture needle designed the overcoat flexible pipe and in wear space between the draw point, internally wearing draw point syringe needle and trocar sheath improves, can solve the problem that existing puncture needle exists effectively, improve the success rate of the dynamic and static rearmounted pipe that affectionately punctures.Simultaneously, this puncture needle does not increase manufacturing cost substantially, and cost is low.More than She Ji content can be used different combinations, reaches optimum efficiency.In the actual use, answer appropriate design groove size, control groove blood flow rate is convenient to operation.This summary of the invention can the combined belt protector angiographic neeclle use.This pin is particularly useful for the abecedarian and the not abundant doctor of puncture experience of artery and vein puncture, also has very great help for veteran doctor.When using this puncture needle, groove blood back occurs and wears draw point in can moving back slightly, wears the situation that draw point has penetrated the offside blood vessel wall and inserted the trocar sheath failure in preventing.Use this puncture needle, will improve the success rate of inserting trocar sheath after blood vessel (especially tremulous pulse) punctures greatly, alleviate the patient suffering, improve doctor's vascular puncture confidence.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing:
Wear the draw point intravasation in when Fig. 1 is arterypuncture, the overcoat flexible pipe might cause and insert the trocar sheath failure still at EV sketch map.
Wear draw point and overcoat flexible pipe in when Fig. 2 is arterypuncture all at endovascular sketch map, insert trocar sheath success easily.
Wear draw point in when Fig. 3 is arterypuncture and pass blood vessel, and the overcoat flexible pipe might be inserted the trocar sheath failure at endovascular sketch map.
More than the demonstration of three figures be the situation of existing lancet puncture artery and vein because can't judge that whether trocar sheath is in the blood vessel the inside, so mortality is higher.
Fig. 4 is the enlarged drawing of first kind of technical scheme of the present invention, wears draw point surface design groove in promptly.
Fig. 5 is the enlarged drawing of second kind of technical scheme of the present invention, i.e. outer sleeve inner wall design groove (corresponding with the interior groove of wearing the draw point surface).
Fig. 6 is the enlarged drawing of the third technical scheme of the present invention, wear draw point promptly and trocar sheath top size is constant, and the rear section becomes: in wear draw point and dwindle bore, trocar sheath increases internal diameter (being the outer sleeve inner wall attenuation), purpose be enlarge trocar sheath and in wear space between the draw point, be beneficial to blood back.
Fig. 7 is the sketch map of overcoat flexible pipe breach of the present invention.
Fig. 8 is to wearing the improved sketch map of draw point syringe needle and overcoat flexible pipe in of the present invention, and at the interior inside and outside wall of draw point of wearing, outer sleeve inner wall is provided with anticoagulant figure layer.
Fig. 9 is that the overcoat flexible pipe is not worn out sketch map to vascellum laterale (in wear the draw point inclined-plane upwards).
Figure 10 is the overcoat flexible pipe sketch map of wearing out blood vessel (in wear the draw point inclined-plane downward).
Figure 11 is a groove apical position sketch map
The specific embodiment
The present invention is further described by following example:
Fig. 1 when carrying out arterypuncture, in wear draw point (3) intravasation (1), overcoat flexible pipe (2) is still outside blood vessel (1), have blood to reflux from draw point this moment, inserts trocar sheath and fail easily.
Fig. 2 is carrying out tremulous pulse when piercing through, in wear draw point (3) and overcoat flexible pipe (2) all in blood vessel (1), insert trocar sheath success easily.
Fig. 3 is carrying out tremulous pulse when piercing through, in wear draw point (3) and pass blood vessel (1), overcoat flexible pipe (2) still in blood vessel (1), causes easily and inserts the trocar sheath failure.
The cutaway view of first kind of technical scheme shown in Figure 4, in the artery and vein puncture needle (4) of a kind of new structure and function, in wear draw point (3) and closely be placed in overcoat hose inner wall (6), in wear draw point (3) surface groove (5) be set, increase overcoat flexible pipe (2) and in wear space between the draw point (3).
The enlarged drawing of second kind of technical scheme shown in Figure 5, in the artery and vein puncture needle (4) of a kind of new structure and function, on overcoat flexible pipe (2) inwall, groove is set, with interior to wear the draw point groove corresponding, increase overcoat flexible pipe (2) and in wear space between the draw point (3), be easy to judge whether intravasation of trocar sheath.
The enlarged drawing of the third technical scheme shown in Figure 6, the bore of interior thorn draw point (3) forward part remains unchanged, increase overcoat flexible pipe (2) and in wear space between the draw point (3).Wear draw point promptly and trocar sheath top size is constant, and the rear section becomes: in wear draw point and dwindle bore (12), it is outer sleeve inner wall (6) attenuation that trocar sheath increases internal diameter, purpose be enlarge trocar sheath and in wear space between the draw point surface, be beneficial to blood back.
Fig. 7 is the sketch map of overcoat flexible pipe breach of the present invention, and breach (9) is set on overcoat flexible pipe (2).
Fig. 8 is to wearing the improved sketch map of draw point (3) syringe needle and overcoat flexible pipe (2) in of the present invention, in wear draw point (3) needle slope be provided with downwards, increase the length of overcoat flexible pipe (2), and add anticoagulant coating (10) between inside and outside sidewall of draw point (3) (especially groove surfaces) and the overcoat flexible pipe (2) interior wearing.
Fig. 9 at this moment, sends into trocar sheath forward for wearing draw point inclined-plane (in wear the draw point inclined-plane downward) in improved, and the conduit lower wall is pushed blood vessel open, and trocar sheath is inserted success.
Figure 10 is for wearing draw point inclined-plane (in wear the draw point inclined-plane upwards) at present used.At this moment, send trocar sheath forward, trocar sheath is worn out blood vessel along the interior draw point of wearing easily, causes and puts tube failure.
Figure 11 is a groove apical position sketch map, the groove top is provided with A point position in the drawings, and is parallel with the contact point B of trocar sheath and blood vessel, like this when blood vessel is the worse for wear, blood just can enter in the pipe from A position, groove top, is beneficial to the position relation that the operator judges catheter tip and blood vessel rapidly.
[0041] except that above-mentioned embodiment, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of requirement of the present invention.
Claims (6)
1. the artery and vein puncture needle (4) of new structure and function, by overcoat flexible pipe (2) and in wear draw point (3) and constitute, in wear draw point (3) and closely be placed in overcoat hose inner wall (6), it is characterized in that: in wear draw point outer surface (7) groove (5) is set, in wear draw point (3) and form the space with overcoat flexible pipe (2).
2. the artery and vein puncture needle (4) of new structure and function, by overcoat flexible pipe (2) and in wear draw point (3) and constitute, in wear draw point (3) and closely be placed in overcoat hose inner wall (6), it is characterized in that: overcoat hose inner wall (6) is provided with groove (5), overcoat flexible pipe (2) with in wear draw point (3) and form the space.
3. the artery and vein puncture needle (4) of new structure and function, by overcoat flexible pipe (2) and in wear draw point (3) and constitute, in wear draw point (3) and closely be placed in overcoat hose inner wall (6), it is characterized in that: the bore of interior thorn draw point first half (11) remains unchanged, interior thorn draw point rear section (12) bore diminishes, the chap of trocar sheath internal diameter is the attenuation of overcoat tube wall, in wear draw point (3) and overcoat flexible pipe (2) and form the space.
4. according to the artery and vein puncture needle (4) of claim 1,2 or 3 described a kind of new structures and function, it is characterized in that: in wear draw point (3) needle slope (8) be provided with downwards.
5. according to the artery and vein puncture needle (4) of claim 1,2 or 3 described a kind of new structures and function, it is characterized in that: the top of overcoat flexible pipe (2) is provided with breach (9).
6. according to the artery and vein puncture needle (4) of claim 1,2 or 3 described a kind of new structures and function, it is characterized in that: on the inwall (6) of inside and outside wall of interior puncture draw point (3) and overcoat flexible pipe, anticoagulant coating (10) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200728282U CN201595906U (en) | 2009-05-22 | 2009-05-22 | Arterial and venous puncture needle with novel structure and function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200728282U CN201595906U (en) | 2009-05-22 | 2009-05-22 | Arterial and venous puncture needle with novel structure and function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201595906U true CN201595906U (en) | 2010-10-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200728282U Expired - Fee Related CN201595906U (en) | 2009-05-22 | 2009-05-22 | Arterial and venous puncture needle with novel structure and function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201595906U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101785688B (en) * | 2009-01-23 | 2014-12-24 | 邹最 | Arteriovenous puncture needle with novel structure and functions |
-
2009
- 2009-05-22 CN CN2009200728282U patent/CN201595906U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101785688B (en) * | 2009-01-23 | 2014-12-24 | 邹最 | Arteriovenous puncture needle with novel structure and functions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101006 Termination date: 20130522 |