CN102440822A - Puncture needle assembly capable of continuously judging locations of tips of internal penetrating needle and external cannula - Google Patents
Puncture needle assembly capable of continuously judging locations of tips of internal penetrating needle and external cannula Download PDFInfo
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- CN102440822A CN102440822A CN2011102804583A CN201110280458A CN102440822A CN 102440822 A CN102440822 A CN 102440822A CN 2011102804583 A CN2011102804583 A CN 2011102804583A CN 201110280458 A CN201110280458 A CN 201110280458A CN 102440822 A CN102440822 A CN 102440822A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/02—Access sites
- A61M39/06—Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof
- A61M39/0606—Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof without means for adjusting the seal opening or pressure
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/329—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles characterised by features of the needle shaft
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Abstract
The invention provides a puncture needle assembly capable of continuously judging locations of tips of an internal penetrating needle and an external cannula, which belongs to the field of medical appliances. By the aid of the blood return condition in a blood return observation tube of the puncture needle assembly, the locations of the tips of the internal penetrating steel needle and the external cannula are reflected and sufficient puncture and adjustment time is provided. The assembly comprises the internal penetrating steel needle with a blood return groove, the external cannula arranged on the periphery of the internal penetrating steel needle, an internal penetrating steel needle blood return sac arranged at the rear end of the internal penetrating steel needle, and an external cannula blood return sac arranged at the rear end of the external cannula, a blood return flow distributing structure which is realized by the aid of an opening is disposed on the external cannula blood return sac and is communicated with the blood return observation tube, and simultaneously, the tail end of the internal penetrating steel needle blood return sac is also communicated with the blood return observation tube. The puncture needle assembly realizes blood vessel puncture, does not change any original puncture operation methods, can be used for continuously observing the blood return condition in total processes of puncture and intubation, provides sufficient time to continuously judge the locations of the tips of the internal penetrating steel needle and the outer cannula, guarantees puncture intubation, and accordingly improves puncture intubation success ratio.
Description
Technical field
The invention belongs to medical instruments field, relate to a kind of medical blood vessel puncture needle, thread a needle in particularly a kind of sustainable judgement and the puncture needle external member of trocar sheath tip location.
Background technology
Angiographic neeclle 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; Nearly all surgical patient all needs venipuncture to put pipe, sets up the peripheral vein path.In this operating process, need use angiographic neeclle.
Normally used puncture needle is worn on the draw point blood back capsule within it can have the venting plug that one piece of blood back is used, but not only aerofluxus but also can stop blood back.Because it is very short to wear the total length of draw point blood back capsule and venting plug in during blood pressure Datong District, wear draw point blood back capsule with venting plug is full of by blood soon in the piercing process, the feasible time compole that can observe blood back is lacked.And the time that can observe blood back judges for the operator whether puncture needle has significant values in blood vessel.In blood is full of, wear draw point blood back capsule and venting plug and trocar sheath when also not inserting blood vessel, the operator has to abandon and uses a new puncture needle instead and wear again again under most of situation.This has not only increased the patient suffering, has also caused the medical resource waste, and the increase of puncture time can cause vasospasm, increases venipuncture difficulty again.So, need clinically a kind of can puncture, put sustainable observation blood back situation in the pipe overall process and judge in wear the most advanced and sophisticated product with the blood vessel relative position of draw point and trocar sheath.
Summary of the invention
The present invention proposes to thread a needle in a kind of sustainable judgement and the puncture needle external member of trocar sheath tip location, and sustainable observation blood back situation provides grace time to wear draw point and trocar sheath tip location in judging, thus raising puncture and intubation success rate.
The present invention realizes through following technical scheme:
Thread a needle in a kind of sustainable judgement and the puncture needle external member of trocar sheath tip location; This combination set comprise take back the blood groove in wear draw point, wear the peripheral trocar sheath of draw point in being arranged on, be arranged on the trocar sheath blood back capsule of trocar sheath rear end; Wear in being arranged on the draw point rear end in wear draw point blood back capsule; It is characterized in that: trocar sheath blood back capsule is provided with the blood back shunting that realizes through opening and cheats structure; This blood back flow dividing structure is being communicated with in order to putting and to observe the cavity body structure of blood back, in wear draw point blood back capsule end and be communicated with in order to put and to observe the cavity body structure of blood back.Blood back groove wherein is positioned at wears the draw point surface; Blood back capsule flow dividing structure wherein is positioned at blood back capsule upper surface; Communicate with the blood back capsule, it is inner that resistance hemal ring sheet wherein is positioned at the blood back capsule, wherein between the position circular hole is arranged; Wear draw point in holding and pass, wear draw point blood back capsule or/and trocar sheath blood back Nang Fenliujiegouchu in blood back observing tube wherein is connected in.Said blood back groove starting point interior wear between summit, draw point inclined-plane and the trocar sheath summit in wear the draw point surface, terminal point is positioned at wears any other positions away from starting point, draw point surface; Said resistance hemal ring sheet position is between blood back capsule flow dividing structure and the blood back capsule end, its Circularhole diameter with in to wear the draw point external diameter consistent; Said blood back observing tube is made up of joint, thread pipe, thick stream pipe and blocking-up blood back flowing device, thread Guan Yiduan jointing wherein, and the other end connects thick stream pipe, and the thick stream pipe other end connects blocks blood back flowing device.Assembled scheme between angiographic neeclle and the blood back observing tube; Comprise as follows: 1, by take back the blood groove in wear draw point, trocar sheath and the blood back observing tube of taking back haematodocha flow dividing structure and resistance hemal ring sheet form; Wear the terminal blood back observing tube that connects of draw point blood back capsule wherein, trocar sheath blood back capsule flow dividing structure connects the blood back observing tube; 2, by take back the blood groove in wear draw point, trocar sheath and the blood back observing tube of taking back haematodocha flow dividing structure and resistance hemal ring sheet form, wears the terminal connection of draw point blood back capsule blood back observing tube in wherein, overcoat blood back capsule flow dividing structure does not connect the blood back observing tube; 3, by take back the blood groove in wear draw point, trocar sheath and the blood back observing tube of taking back haematodocha flow dividing structure and resistance hemal ring sheet form, trocar sheath blood back capsule flow dividing structure connection blood back observing tube wherein, in wear draw point blood back capsule interface and do not connect the blood back observing tube; 4, only form by the trocar sheath of interiorly wearing draw point, taking back haematodocha flow dividing structure and resistance hemal ring sheet.
Beneficial effect of the present invention is: adopt above-mentioned external member to carry out vascular puncture; Do not change any operation technique of original puncture; And can in puncturing, put the pipe overall process, continue to observe the blood back situation; Provide grace time to continue to wear draw point and trocar sheath tip location in the judgement, guarantee puncture and intubation, thereby improve the puncture and intubation success rate.
Description of drawings
Fig. 1 is angiographic neeclle combination set overall schematic (wherein 1 is the blood back observing tube, and 2 is angiographic neeclle).
Fig. 2 is blood back observing tube sketch map in the combination set (wherein 1-1 is a joint, and 1-2 is the capillary restriction, and 1-3 is an observation portion, and 1-4 is the blocking-up blood back flowing device).
Fig. 3 and Fig. 4 are that (Fig. 3 is a vertical view to combination set medium vessels puncture needle sketch map, and Fig. 4 is a side view, and wherein 2-1 wears draw point in being; 2-2 is a trocar sheath; 2-3 wears draw point blood back capsule in being, 2-4 is a trocar sheath blood back capsule, and 2-5 is a trocar sheath blood back capsule flow dividing structure; 2-6 is resistance hemal ring sheet, and 2-7 is the blood back groove).
Fig. 5 is blood back flute detail figure on the angiographic neeclle (wherein A is a side view, and B is a vertical view, and C and D are profile).
Fig. 6 is the generalized section (wherein 2-6 is resistance hemal ring sheet, and 2-1 wears draw point in being) of resistance hemal ring sheet.
Fig. 7-Figure 10 is 4 kinds of assembled scheme sketch maps between angiographic neeclle and the blood back observing tube, the situation when the gray shade signal is full of blood separately among the figure.
Wherein Fig. 7 wears that draw point blood back capsule is terminal all to be connected the blood back observing tube with trocar sheath blood back capsule flow dividing structure in being;
Fig. 8 wears the terminal blood back observing tube that connects of draw point blood back capsule in being, trocar sheath blood back capsule flow dividing structure does not connect;
Fig. 9 is that trocar sheath blood back capsule flow dividing structure connects the blood back observing tube, in wear draw point blood back capsule end and do not connect;
Figure 10 wears draw point blood back capsule interface in being and is not connected the blood back observing tube with trocar sheath blood back capsule flow dividing structure.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further specified.
Join shown in Figure 1ly, Fig. 1 has showed angiographic neeclle combination set overall schematic described in the invention, and wherein 1 is the blood back observing tube, and 2 is angiographic neeclle.
Further ginseng Fig. 3, shown in Figure 4 for existing angiographic neeclle, mainly includes: in wear draw point 2-1, trocar sheath 2-2, in wear draw point blood back capsule 2-3, trocar sheath blood back capsule 2-4, blood back groove 2-7.
Wherein, wearing draw point 2-1 in described is the hollow type structure that rigid material is processed, and its hollow space containment blood passes through.
Described trocar sheath 2-2 is the transparent conduit type structure of being processed by soft plastic of wearing in being enclosed within on the draw point, fits closely with the interior draw point of wearing, and places in the piercing process in the blood vessel, is used for containment blood and passes through.
Wearing draw point blood back capsule 2-3 in described is the transparent cavity structure that hard plastic is processed, and wears the effusive blood of draw point in holding, and works the function of observing blood circumstance simultaneously, and its end is furnished with dismountable venting plug occlude blood and overflows.
Described trocar sheath blood back capsule 2-4 is connected the terminal clear hollow type structure of trocar sheath; Processed by medium soft plastic, can observe blood circumstance, its end can connect common medical use liquid path union joint; Hold effusive blood in the trocar sheath; As the connection bridge between trocar sheath and the fluid path, also can connect the tremulous pulse transducer simultaneously, the monitoring arteriotony.
Described blood back groove 2-7 wears the strip groove structure of draw point outer wall in being, ginseng Fig. 5, and initiating terminal is worn between summit, draw point inclined-plane and the trocar sheath summit between interior, and end leads to trocar sheath blood back capsule.Be used for blood drainage to trocar sheath blood back capsule.This structure is an innovative technology in present technology, adopts though popularize, and exists, is supported by the safe luxuriant house journal of Japan.
This is present existing technical scheme, and its advantage is: realized the position relation of wearing draw point and the most advanced and sophisticated blood vessel wall relatively of trocar sheath in blood circumstance is judged respectively in draw point blood back capsule and the trocar sheath blood back capsule through wearing in observing.Wearing the draw point tip location wherein can observe through the interior blood back situation of wearing in the draw point blood back capsule, and the trocar sheath tip location can be observed through blood back situation in the trocar sheath blood back capsule.Shortcoming is: blood back is full of very soon in its two places blood back capsule, and observing time is short, has limited the judgement of internally wearing draw point and trocar sheath tip location, can supply the time compole of puncture needle adjustment operation short simultaneously.Blood is prone to from trocar sheath blood back capsule, overflow when wearing draw point in addition and extracting, and causes unnecessary blood loss of patient and pollution.
In practical operation, in wear draw point blood back capsule 2-3 and trocar sheath blood back capsule 2-4 is full of by blood very soon, the time of observation is very short.At present domestic and international various general medical puncture needle suits, when carrying out the human vas puncture, its blood of observing part is generally 1-3 second observing time.In the so short time, require the doctor to accomplish the process of puncture and intubation, cause error easily, the patient for part puncture difficulty then more need prolong observing time.
According to the experience in our clinical trial, in the blood observing time of observing part, optimum range is 5-15 second, and in this time range, the doctor can accomplish puncture procedure at leisure, accurately observes the state of puncture.
But present technology if want to reach this purpose, just must prolong the length of observing part significantly or connect a prolongation pipe, in this case, will cause unnecessary blood loss of patient and pollution, and observing time is also wayward.
If want to let blood flow volume that patient loses seldom, also can prolong the observing time of blood simultaneously neatly, must make corresponding structure and change, this present invention just the innovation point that will describe.
To the present invention; At the interior a kind of cavity body structure that puts blood back of the terminal connection of draw point blood back capsule of wearing; Ginseng Fig. 2, this cavity body structure that puts blood back be for through the common blood back observing tube of forming 1 of thread pipe 1-2 and the thick stream pipe 1-3 that is interconnected, the transparent configuration of being processed by soft plastic.The diameter of bore scope of said thread pipe 1-2 is 0.02-0.6mm; The diameter of bore of the thick stream pipe 1-3 that is connected is 0.5-2mm, and the length range of thread pipe 1-2 is 0.5-20mm, and the length range of the thick stream pipe 1-3 that is connected is 50-300mm; The advantage of this structure is: blood flow into the big thick stream pipe 1-3 in aperture from the little thread pipe 1-2 in aperture; To can fill up thick stream pipe 1-3 with the longer time, like this, just prolong observing time.The scope restriction of its aperture and length is based on following consideration, illustrates.
Such as, if the aperture of thread pipe 1-2 is 0.2mm, the aperture of thick stream pipe 1-3 is 1.0mm, so, the ratio at their interface, aperture is: 1: 25.So if blood is managed 1-3 with the thread pipe 1-2 and the thick stream of the full same length of same flow velocity, so, the ratio of required time also is 1: 25.Obviously, such design just can greatly prolong the observing time of blood.
So far, in wear in the draw point blood back capsule blood back situation can be through its terminal blood back observing tube that connects prolonging observing time, wear the draw point tip location thereby reach the situation that guarantees sufficient observing time in judging.
Same thinking is considered trocar sheath blood back capsule, can prolong in the trocar sheath blood back capsule blood back observing time with reach with in wear the same purpose of draw point blood back capsule.The structure of wearing draw point blood back capsule in the reference will reach same purpose, just must carry out structural change to trocar sheath blood back capsule.
So, sleeve pipe blood back capsule upper surface outside, the present invention is provided with a blood back flow dividing structure of realizing through opening, communicate with trocar sheath blood back capsule, and its opening is furnished with the resistance thromboembolism, is referred to as trocar sheath blood back capsule flow dividing structure 2-5, ginseng Fig. 3 and Fig. 4.Said opening can connect the blood back observing tube, also can connect simultaneously common medical use liquid path union joint, tremulous pulse pressure tester or hold and observe the cavity body structure of blood back.
So far, the setting through blood back capsule flow dividing structure 2-5 and connect the blood back observing tube prolongs the purpose of observing time of blood back in the trocar sheath blood back capsule thereby just reached.But so far still have a shortcoming not solve, blood is prone to from trocar sheath blood back capsule, overflow when wearing draw point in just and extracting, and causes unnecessary blood loss of patient and pollution.
To this point, the present invention is provided with a resistance hemal ring sheet 2-6, ginseng Fig. 3 and Fig. 4 in blood back capsule flow dividing structure.Said resistance hemal ring sheet 2-6 is between blood back capsule flow dividing structure and blood back capsule end; Resistance hemal ring sheet external diameter is identical with trocar sheath blood back capsule internal diameter and fit tightly; Position Design has and wears the circular hole that draw point passes through in holding wherein, its diameter with in to wear the draw point external diameter identical, be 0.1mm-2mm; The two fit tightly and in wear draw point and slide freely ginseng Fig. 6.
Based on foregoing invention thought, according to the function that will realize, in being connected in the combination of puncture needle and blood back observing tube various embodiments is arranged, illustrate below.
Ginseng Fig. 7, a kind of preferred embodiment of the present invention: in wear that draw point blood back capsule is terminal all to be connected the blood back observing tube with trocar sheath blood back capsule flow dividing structure.It can realize prolonging simultaneously trocar sheath blood back capsule with in wear in the draw point blood back capsule blood back observing time.Concrete operations are following: when using this combination set to carry out vascular puncture; Do not change any operation technique of original puncture needle; When interior when wearing draw point 2-1 contact or intravasation; Wear draw point blood back capsule 2-3 because the effect of blood pressure promptly has blood to wear in the draw point 2-1 and in injecting in flowing to, and then progressively get into blood back observing tube 1.Observe the blood back situation through interior draw point blood back capsule 2-3 and the blood back observing tube 1 of wearing, can clear view in blood back observing tube 1, progressively advance, thereby wear draw point 2-1 tip in the judgement whether in blood vessel with pulse mode to blood.Continue to advance puncture needle 2; Wear that space that the most advanced and sophisticated starting point of draw point blood back groove 2-7 starting point and trocar sheath 2-2 forms contacts or during intravasation when interior; Blood is promptly arranged along blood back groove 2-7; The gap of wearing in the warp between draw point 2-1 outer surface and the trocar sheath 2-2 inner surface is injected in the trocar sheath blood back capsule 2-4, and then progressively gets into blood back observing tube 1 through blood back capsule flow dividing structure 2-5.Observe the blood back situation through trocar sheath blood back capsule 2-4 and blood back observing tube 1; Can clearly observe blood equally progressively advances with pulse mode in blood back observing tube 1; Keep trocar sheath 2-2 and trocar sheath blood back capsule 2-4 position motionless this moment, wears draw point 2-1 in slowly withdrawing from and wear draw point blood back capsule 2-3 in reaching and push trocar sheath 2-2 simultaneously and just can trocar sheath 2-2 be inserted in the blood vessel smoothly.
Ginseng Fig. 8 is second kind of embodiment: wear the terminal blood back observing tube that connects of draw point blood back capsule only.In can realizing prolonging, it wears in the draw point blood back capsule blood back observing time.Ginseng Fig. 9 is the third embodiment: only trocar sheath blood back capsule flow dividing structure connects the blood back observing tube.It can realize prolonging in the trocar sheath blood back capsule blood back observing time.Ginseng Figure 10 is the 4th kind of embodiment: puncture needle does not connect the blood back observation and uses separately.The operational approach of these three kinds of embodiment can be with reference to first kind of embodiment, difference be selectivity prolong trocar sheath blood back capsule or in wear draw point blood back capsule or do not prolong observing time.
In practical operation of the present invention; Whole puncture inserting needle is a continuous process; When observing in the blood back groove when blood is arranged, the most advanced and sophisticated just intravasation of trocar sheath, and since in wear most advanced and sophisticated starting point to the breach blood back of draw point groove distance less than blood vessel diameter; Even like this when in to wear draw point and blood back groove starting point and trocar sheath most advanced and sophisticated simultaneously in blood vessel the time, wearing draw point in can guaranteeing can be through the offside blood vessel wall yet.Because the effect that the blood back observing tube has accurate current limliting speed limit, blood slowly advance in the blood back observing tube, guaranteeing has the sufficient time to observe and adjust the position.
In whole piercing process; When interior wearing has blood flow to get in the terminal blood back observing tube of draw point blood back capsule and advance with pulsed; And no blood entering in the trocar sheath blood back capsule flow dividing structure place blood back observing tube explains and wears draw point in blood vessel in having only that the trocar sheath tip is still outside blood vessel; When two place's blood back observing tubes all have the blood flow entering and with the pulsed propelling, wear draw point and trocar sheath tip in the explanation all in blood vessel; Wear when interior that blood flow stops to advance in the terminal blood back observing tube of draw point blood back capsule; And blood flow is still continuing the pulsed propelling in the trocar sheath blood back capsule flow dividing structure place blood back observing tube; Wear the draw point tip in the explanation and penetrated the offside blood vessel wall, and the trocar sheath tip is still in blood vessel; Blood flow all stops to advance in two place's blood back observing tubes, wears draw point and trocar sheath tip in the explanation and has all penetrated the offside blood vessel wall.
Wear the most advanced and sophisticated relative position with blood vessel of draw point and trocar sheath in can judging through dynamic observing with upper type, thereby and the blood back observing tube guarantee to have the sufficient time that puncture needle adjustment is accomplished whole piercing process and put pipe smoothly.
More than be the description of this invention and unrestricted, based on other embodiment of inventive concept, also all among protection scope of the present invention.
Claims (14)
1. thread a needle in the sustainable judgement and the puncture needle external member of trocar sheath tip location; This combination set comprise take back the blood groove in wear draw point, wear the peripheral trocar sheath of draw point in being arranged on, be arranged on the trocar sheath blood back capsule of trocar sheath rear end; Wear in being arranged on the draw point rear end in wear draw point blood back capsule; It is characterized in that: trocar sheath blood back capsule is provided with the blood back flow dividing structure of realizing through opening; This blood back flow dividing structure is being communicated with in order to putting and to observe the cavity body structure of blood back, in wear draw point blood back capsule end and be communicated with in order to put and to observe the cavity body structure of blood back.
2. thread a needle in a kind of sustainable judgement according to claim 1 and the puncture needle external member of trocar sheath tip location; It is characterized in that: in said trocar sheath blood back capsule set inside resistance hemal ring sheet is arranged, resistance hemal ring sheet is provided with in order to wear the circular hole that draw point passes in holding.
3. thread a needle in a kind of sustainable judgement according to claim 2 and the puncture needle external member of trocar sheath tip location, it is characterized in that: the circular hole on the said resistance hemal ring sheet, be arranged on the centre position of resistance hemal ring sheet, wear draw point in holding and pass through.
4. thread a needle in a kind of sustainable judgement according to claim 2 and the puncture needle external member of trocar sheath tip location, it is characterized in that: the circular hole on the said resistance hemal ring sheet, diameter is 0.1mm-2mm.
5. thread a needle in a kind of sustainable judgement according to claim 1 and the puncture needle external member of trocar sheath tip location; It is characterized in that: described in order to put the cavity body structure of blood back, be the blood back observing tube of forming jointly through thread pipe and the thick stream pipe that is interconnected.
6. thread a needle in a kind of sustainable judgement according to claim 5 and the puncture needle external member of trocar sheath tip location, it is characterized in that: the diameter of bore scope of described thread pipe is 0.02-0.6mm, and the diameter of bore of the thick stream pipe that is connected is 0.5-2mm.
7. thread a needle in a kind of sustainable judgement according to claim 5 and the puncture needle external member of trocar sheath tip location, it is characterized in that: the length range of described thread pipe is 0.5-20mm, and the length range of the thick stream pipe that is connected is 50-300mm.
8. thread a needle in a kind of sustainable judgement according to claim 1 and the puncture needle external member of trocar sheath tip location, it is characterized in that: described in order to put the cavity body structure of blood back, be straight tube conduit or utricule.
9. thread a needle in a kind of sustainable judgement according to claim 1 and the puncture needle external member of trocar sheath tip location, it is characterized in that: wear the draw point outer wall in described, be provided with the blood back groove of rectangular groove shape structure.
10. thread a needle in a kind of sustainable judgement according to claim 9 and the puncture needle external member of trocar sheath tip location; It is characterized in that: said blood back groove starting point interior wear between summit, draw point inclined-plane and the trocar sheath summit in wear the draw point surface, terminal point is positioned at wears draw point other position away from starting point.
11. thread a needle in a kind of sustainable judgement according to claim 1 and the puncture needle external member of trocar sheath tip location, it is characterized in that: the described opening that is arranged on the blood back flow dividing structure on the trocar sheath, pore diameter range is 0.2-1.5mm.
12. thread a needle in a kind of sustainable judgement according to claim 1 and the puncture needle external member of trocar sheath tip location, it is characterized in that: the described opening that is arranged on the blood back flow dividing structure on the trocar sheath blood back capsule, pore diameter range is 1-8mm.
13. thread a needle in a kind of sustainable judgement according to claim 1 and the puncture needle external member of trocar sheath tip location; It is characterized in that: in described puncture needle rear end; Be provided with tail end have opening in wear draw point blood back capsule, on the opening on the backshank blood back capsule, be connected with in order to put the cavity body structure of blood back.
14. thread a needle in a kind of sustainable judgement according to claim 13 and the puncture needle external member of trocar sheath tip location; It is characterized in that: described in order to put the cavity body structure of blood back, be the blood back observing tube of forming jointly through thread pipe and the thick stream pipe that is interconnected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102804583A CN102440822A (en) | 2011-09-20 | 2011-09-20 | Puncture needle assembly capable of continuously judging locations of tips of internal penetrating needle and external cannula |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102804583A CN102440822A (en) | 2011-09-20 | 2011-09-20 | Puncture needle assembly capable of continuously judging locations of tips of internal penetrating needle and external cannula |
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| CN102440822A true CN102440822A (en) | 2012-05-09 |
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| CN2011102804583A Pending CN102440822A (en) | 2011-09-20 | 2011-09-20 | Puncture needle assembly capable of continuously judging locations of tips of internal penetrating needle and external cannula |
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| CN111513821A (en) * | 2020-04-29 | 2020-08-11 | 周彬 | Artery indwelling needle |
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| US10814106B2 (en) | 2015-10-28 | 2020-10-27 | Becton, Dickinson And Company | Soft push tabs for catheter adapter |
| EP3744382A1 (en) * | 2015-10-28 | 2020-12-02 | Becton, Dickinson and Company | Integrated catheter with independent fluid paths |
| US10639455B2 (en) | 2015-10-28 | 2020-05-05 | Becton, Dickinson And Company | Closed IV access device with paddle grip needle hub and flash chamber |
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| JP2018536471A (en) * | 2015-10-28 | 2018-12-13 | ベクトン・ディキンソン・アンド・カンパニーＢｅｃｔｏｎ， Ｄｉｃｋｉｎｓｏｎ Ａｎｄ Ｃｏｍｐａｎｙ | Integrated catheter with independent fluid path |
| CN113117216B (en) * | 2015-10-28 | 2023-10-31 | 贝克顿·迪金森公司 | Integrated catheter with independent fluid paths |
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| US10357636B2 (en) | 2015-10-28 | 2019-07-23 | Becton, Dickinson And Company | IV access device having an angled paddle grip |
| CN113117216A (en) * | 2015-10-28 | 2021-07-16 | 贝克顿·迪金森公司 | Integrated catheter with independent fluid path |
| US10525237B2 (en) | 2015-10-28 | 2020-01-07 | Becton, Dickinson And Company | Ergonomic IV systems and methods |
| EP4342507A3 (en) * | 2015-10-28 | 2024-05-15 | Becton, Dickinson and Company | Integrated catheter with independent fluid paths |
| CN106620995A (en) * | 2015-10-28 | 2017-05-10 | 贝克顿·迪金森公司 | Integrated catheter with independent fluid paths |
| WO2017074684A1 (en) * | 2015-10-28 | 2017-05-04 | Becton, Dickinson And Company | Integrated catheter with independent fluid paths |
| US10744305B2 (en) | 2015-10-28 | 2020-08-18 | Becton, Dickinson And Company | Ergonomic IV systems and methods |
| USD900308S1 (en) | 2016-10-05 | 2020-10-27 | Becton, Dickinson And Company | Catheter adapter |
| USD835262S1 (en) | 2016-10-05 | 2018-12-04 | Becton, Dickinson And Company | Intravenous catheter assembly |
| USD819802S1 (en) | 2016-10-05 | 2018-06-05 | Becton, Dickinson And Company | Catheter adapter |
| USD844781S1 (en) | 2016-10-05 | 2019-04-02 | Becton, Dickinson And Company | Needle hub |
| US10238852B2 (en) | 2016-10-05 | 2019-03-26 | Becton, Dickinson And Company | Septum housing |
| US11793986B2 (en) | 2016-10-05 | 2023-10-24 | Becton, Dickinson And Company | Septum housing |
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| CN111513821A (en) * | 2020-04-29 | 2020-08-11 | 周彬 | Artery indwelling needle |
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