CN101797408A - Arteriovenous remaining needle - Google Patents
Arteriovenous remaining needle Download PDFInfo
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- CN101797408A CN101797408A CN 201010128970 CN201010128970A CN101797408A CN 101797408 A CN101797408 A CN 101797408A CN 201010128970 CN201010128970 CN 201010128970 CN 201010128970 A CN201010128970 A CN 201010128970A CN 101797408 A CN101797408 A CN 101797408A
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- Prior art keywords
- needle
- needle holder
- paracentesis
- distance
- draw point
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Abstract
The invention discloses an arteriovenous remaining needle comprising a tubular puncture needle bed and a main needle body, wherein the main needle body consists of an inner steel needle and an outer sleeve; the rear section of the inner steel needle is connected with and extends into the puncture needle bed, and the front section of the inner steel needle is sleeved with the outer sleeve. The arteriovenous remaining needle is characterized in that the front end head of the inner steel needle is a distance A from the front end head of the outer sleeve; a cylindrical supporting needle bed is sleeved outside the puncture needle bed; the supporting needle bed and the puncture needle bed can relatively slide a fixed distance B; and the distance A is equal to the distance B. By improving the structure of the traditional arteriovenous puncture remaining needle to piecewise propel the main needle body, the invention can prevent the uncertainty of a propelling distance of an operator to prevent insufficient propelling or excessive propelling during the remaining needle puncturing, thereby ensuring the outer sleeve to enter a blood vessel and ensuring the success of tube remain.
Description
Technical field
The present invention relates to the vascular puncture utensil, particularly the vascular puncture remaining needle.
Background technology
Blood vessel remaining needle is since invention, through technological innovation constantly and improvement, be widely used clinically at present, particularly at operating room and critical illness ICU, generally adopt the approach of venous detaining needle as venous transfusion and administration, the intra-arterial remaining needle can also be used for the monitoring of arterial pressure simultaneously, is connected with pressure transducer by endarterial indwelling casing tube, can obtain monitored person's systolic pressure, diastolic pressure and pressure waveform in real time.Secondly, can also obtain the artery and vein blood sample by endovascular indwelling casing tube and carry out vim and vigour and electrolytical analysis.
At present, employed clinically blood vessel remaining needle generally all comprises hollow interior draw point and indwelling casing tube, and interior draw point syringe needle is the cylinder on band inclined-plane, and pin hole is arranged on the needle slope, and pin hole communicates with the inner duct of interior draw point.When carrying out vascular puncture with such puncture remaining needle, especially when arterypuncture was put pipe, all exist a problem: whether the sleeve pipe of remaining needle entered in the blood vessel during puncture, often was difficult to judge, therefore caused puncture difficult, the problem of complicated operation.During action arteries and veins puncture and intubation, when interior draw point syringe needle passed blood vessel wall, blood was the shape of beating and gushes out, and draw point was at intra-arterial in this moment was provable, and trocar sheath is probably also outside arteries, or small part only arranged in blood vessel.That is to say, when inserting needle,, also possibly pin is advanced a little again so that also intravasation of trocar sheath, but the propulsive degree of depth often can not judge intuitively, can only rely on operator's experience even after seeing blood back.If think that the remaining needle trocar sheath also not during intravasation, then still needs the trocar is lowerd, be 10 ° of angles with skin, again it is pushed ahead about 2mm, just may make trocar sheath all enter intra-arterial, this has often strengthened the difficulty that arterypuncture is put pipe.If the operator gets the wrong sow by the ear, or maneuver is unskilled, also even may cause the puncture and intubation failure, perhaps brings complication such as local hematoma, vasospasm because of repeated localised puncture.
Summary of the invention
Technical problem to be solved by this invention provides a kind of when the puncture inserting needle, can make main needle body segmentation propelling, guarantees that the trocar sheath of remaining needle successfully pushes the iv cannule of blood vessel, puts the pipe venipuncture difficulty thereby reduce arteriovenous, reduces the tube failure rate of putting.
Technical scheme of the present invention is: a kind of iv cannule, comprise the main body pin of forming by tubulose Paracentesis needle holder, interior draw point and trocar sheath, interior draw point back segment connection is also stretched into Paracentesis needle holder, interior draw point leading portion is with trocar sheath, it is characterized in that: the front end distance A of interior draw point front end and trocar sheath; Outside Paracentesis needle holder, be with tubular and support needle stand, support needle stand and the Paracentesis needle holder fixed range B that can slide relatively, equate with distance A apart from B.
Specifically, the present invention increases by one and supports needle stand by improving the structure of traditional artery and vein puncture remaining needle outside Paracentesis needle holder, and a kind of linkage of design between Paracentesis needle holder and support needle stand can make the puncture needle segmentation advance.Make when carrying out retained needle puncture, earlier interior draw point needle point is pushed blood vessel, can see blood back from interior draw point afterbody behind the needle point intravasation advances, this moment is the operations linkage device again, make needle body advance one section fixed short distance B forward again, and this just in time is the distance A of interior draw point needle point to the outer sleeve upper head apart from B, thereby can both guarantee trocar sheath energy intravasation, is unlikely to again to advance excessively.
For the segmentation that realizes main needle body advances, behind the Paracentesis needle holder inserting needle, operation Paracentesis needle holder and the relative again fixed range B that slides of support needle stand, the realization means of the interlock mode that designs between Paracentesis needle holder and the support needle stand can have a variety of.In the existing field, all genus can be realized Paracentesis needle holder and all embodiments that support relative slip fixed range between these two sleeves of needle stand, all belong within the practical range of the present invention.
At remaining needle needle point intravasation and after seeing blood back, by the linkage on the operation Paracentesis needle holder, make main needle body advance a fixed short distance again, to guarantee the trocar sheath intravasation, do not need to advance again whole remaining needle, can avoid the uncertainty of operator's advance distance like this, in case deficiency or excessive is advanced in thrust, ensure with this and to make the trocar sheath intravasation, thereby guarantee the success that the external sleeve pipe of puncture needle is inserted, draw point intravasation in solving and trocar sheath is inserted a difficult technologies difficult problem.The present invention is simple in structure, practical, to the clinical manipulation person, can make operation more accurate, more convenient, no matter to practician or new hand, can improve the success rate that iv cannule is put pipe greatly, reduce the waste of clinical middle remaining needle, also greatly reduce patient's misery.
Description of drawings
Fig. 1 is the sectional structure sketch map that the side putting type segmentation of the embodiment of the invention 1 advances remaining needle;
Fig. 2 is the propulsive remaining needle sectional structure of the rear-mounted segmentation sketch map of the embodiment of the invention 2;
Fig. 3 is the sectional structure sketch map that the link-type of the embodiment of the invention 3 presses down the propulsive remaining needle of segmentation;
Fig. 4 is the sectional structure sketch map that the spiral segmentation of the embodiment of the invention 4 advances remaining needle.
The specific embodiment
As accompanying drawing 1 is the propulsive remaining needle structural representation of side putting type segmentation.Design hollow interior draw point 1, interior draw point upper end is the beveled point termination, and there is pin hole on the inclined-plane on the termination.Interior draw point leading portion socket trocar sheath 2, the upper end distance A of interior draw point 1 needle point termination and trocar sheath; Interior draw point back segment connection is also stretched into tubulose Paracentesis needle holder 3, outside Paracentesis needle holder 3, be with tubular and support needle stand 4, vertically offer bar-shaped trough at support needle stand 4 sidewalls, Paracentesis needle holder and slotted eye are provided with push rod 5 on the corresponding position, push rod 5 stretches out notch, and drive Paracentesis needle holder 3 and vertically move apart from B along notch, equate with distance A apart from B, be roughly 2mm.
Accompanying drawing 2 is the propulsive remaining needle structural representation of rear-mounted segmentation.Design hollow interior draw point 1, interior draw point front end is the beveled point termination, and there is pin hole on the inclined-plane on the termination.Interior draw point leading portion socket trocar sheath 2, the front end distance A of interior draw point 1 needle point termination and trocar sheath; Interior draw point back segment connection is also stretched into tubulose Paracentesis needle holder 3, outside Paracentesis needle holder 3, be with tubular and support needle stand 4, in Paracentesis needle holder 3 rear ends a pressing plate 6 is set, pressing plate 6 stretches out and supports needle stand 4 rear ends apart from B, as rear-mounted push structure, can drive Paracentesis needle holder and support needle stand relatively and vertically move, equate with distance A apart from B apart from B.
Referring to Fig. 3, among the figure sectional structure sketch map of another embodiment of the invention, promptly link-type presses down the propulsive remaining needle of segmentation.Design hollow interior draw point 1, interior draw point front end is the beveled point termination, and there is pin hole on the inclined-plane on the termination.Interior draw point leading portion socket trocar sheath 2, the front end distance A of interior draw point 1 needle point termination and trocar sheath; Interior draw point back segment connects and stretches into tubulose Paracentesis needle holder 3, is with tubular and supports needle stand 4 outside Paracentesis needle holder 3, supports on the needle stand sidewall and has bar-shaped trough, press-down type connecting rod 7 passes notch, connecting rod 7 is articulated and connected by long-armed and galianconism and forms, and is long-armed hinged with Paracentesis needle holder, and galianconism is hinged with the support needle stand.Behind connecting rod 7 pressurizeds, can promote vertically sliding distance B forward of Paracentesis needle holder 3, advance distance B is equated with distance A apart from B by the length decision of supporting the slotted eye on the needle stand.
Referring to Fig. 4, Fig. 4 is the sectional structure sketch map of another embodiment of the invention, and spiral segmentation advances the sectional structure sketch map of remaining needle.Design hollow interior draw point 1, interior draw point front end is the beveled point termination, and there is pin hole on the inclined-plane on the termination.Interior draw point leading portion socket trocar sheath 2, the front end distance A of interior draw point 1 needle point termination and trocar sheath; Interior draw point back segment connection is also stretched into tubulose Paracentesis needle holder 3, outside Paracentesis needle holder 3, be with tubular and support needle stand 4, at Paracentesis needle holder 3 back section surfaces one section threaded rod 8 is set, support on needle stand 4 position corresponding and slot with threaded rod, be rotary with an embedded nut 9 on the threaded rod, nut 9 is stuck in the groove that supports on the needle stand 4, and nut 9 can rotatablely move by limited angle in the groove that supports needle stand 4, and the Paracentesis needle holder that is threaded bar 8 with drive is pushed ahead apart from B.Lines difference according to screw thread can be designed to left hand thread or right-handed thread, but guarantee finally that needle body pushes ahead apart from B, equate with distance A apart from B.
Claims (6)
1. iv cannule, comprise the main body pin of forming by tubulose Paracentesis needle holder, interior draw point and trocar sheath, interior draw point back segment connects and stretches into Paracentesis needle holder, and interior draw point leading portion is with trocar sheath, it is characterized in that: the front end distance A of interior draw point front end and trocar sheath; Outside Paracentesis needle holder, be with tubular and support needle stand, support needle stand and the Paracentesis needle holder fixed range B that can slide relatively, equate with distance A apart from B.
2. iv cannule as claimed in claim 1 is characterized in that: distance A is 2mm.
3. iv cannule as claimed in claim 1 or 2, it is characterized in that: vertically offer bar-shaped trough at described support needle stand sidewall, Paracentesis needle holder and notch are provided with push rod on the corresponding position, and push rod stretches out notch, can drive Paracentesis needle holder and vertically move apart from B along notch.
4. iv cannule as claimed in claim 1 or 2 is characterized in that: in described Paracentesis needle holder rear end a pressing plate is set, pressing plate stretches out and supports the needle stand rear end apart from B, and pressing plate can drive Paracentesis needle holder and support needle stand relatively and vertically move apart from B.
5. iv cannule as claimed in claim 1 or 2, it is characterized in that: have bar-shaped trough on the described support needle stand sidewall, a press-down type connecting rod is set passes notch, connecting rod is formed with galianconism is hinged by long-armed, long-armed hinged with Paracentesis needle holder, galianconism is hinged with the support needle stand, after connecting rod is depressed, can promote Paracentesis needle holder and vertically move apart from B.
6. iv cannule as claimed in claim 1 or 2, it is characterized in that: section surface is provided with one section threaded rod behind described Paracentesis needle holder, on the described support needle stand position corresponding, slot with threaded rod, correspondence is provided with a nut on the threaded rod, nut is stuck in the groove that supports on the needle stand, thereby swivel nut can drive threaded rod Paracentesis needle holder is vertically moved apart from B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101289701A CN101797408B (en) | 2010-03-22 | 2010-03-22 | Arteriovenous remaining needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101289701A CN101797408B (en) | 2010-03-22 | 2010-03-22 | Arteriovenous remaining needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101797408A true CN101797408A (en) | 2010-08-11 |
| CN101797408B CN101797408B (en) | 2011-11-30 |
Family
ID=42593348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101289701A Expired - Fee Related CN101797408B (en) | 2010-03-22 | 2010-03-22 | Arteriovenous remaining needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101797408B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107875483A (en) * | 2017-11-21 | 2018-04-06 | 谷梨花 | A kind of bone marrow in-cavity injection apparatus |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4068659A (en) * | 1976-07-12 | 1978-01-17 | Deseret Pharmaceutical Co., Inc. | Catheter placement assembly |
| EP0093101A2 (en) * | 1982-04-22 | 1983-11-02 | Bengt Gustavsson | A device for introducing a catheter into a blood vessel |
| CN2542267Y (en) * | 2002-05-10 | 2003-04-02 | 李�浩 | Needle staying in vessel |
| CN2892112Y (en) * | 2006-04-13 | 2007-04-25 | 汤光化 | Slidewheel type venostasis needle |
| JP2007236819A (en) * | 2006-03-10 | 2007-09-20 | Terumo Corp | Introducer guiding implement and introducer kit |
| CN201299889Y (en) * | 2008-10-09 | 2009-09-02 | 王金娜 | Puncture exhaust needle |
-
2010
- 2010-03-22 CN CN2010101289701A patent/CN101797408B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4068659A (en) * | 1976-07-12 | 1978-01-17 | Deseret Pharmaceutical Co., Inc. | Catheter placement assembly |
| EP0093101A2 (en) * | 1982-04-22 | 1983-11-02 | Bengt Gustavsson | A device for introducing a catheter into a blood vessel |
| CN2542267Y (en) * | 2002-05-10 | 2003-04-02 | 李�浩 | Needle staying in vessel |
| JP2007236819A (en) * | 2006-03-10 | 2007-09-20 | Terumo Corp | Introducer guiding implement and introducer kit |
| CN2892112Y (en) * | 2006-04-13 | 2007-04-25 | 汤光化 | Slidewheel type venostasis needle |
| CN201299889Y (en) * | 2008-10-09 | 2009-09-02 | 王金娜 | Puncture exhaust needle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107875483A (en) * | 2017-11-21 | 2018-04-06 | 谷梨花 | A kind of bone marrow in-cavity injection apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101797408B (en) | 2011-11-30 |
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Granted publication date: 20111130 Termination date: 20120322 |