CN201481518U - Returnable needle core type internal fistula tube needle - Google Patents
Returnable needle core type internal fistula tube needle Download PDFInfo
- Publication number
- CN201481518U CN201481518U CN2009202046254U CN200920204625U CN201481518U CN 201481518 U CN201481518 U CN 201481518U CN 2009202046254 U CN2009202046254 U CN 2009202046254U CN 200920204625 U CN200920204625 U CN 200920204625U CN 201481518 U CN201481518 U CN 201481518U
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- needle
- main part
- blood vessel
- withdraw
- hole
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Abstract
The utility model relates to a returnable needle core type internal fistula tube needle which comprises a separable needle tube and a puncture needle, wherein the puncture needle comprises a needle body and a needle head which is arranged at one end of the needle body; the needle tube comprises a hollow main part, one end of the main part is provided with a communicated hollow blood vessel inner retaining part, and the other end of the main part is provided with a communicated hollow connecting part; the connecting part and the main part have a certain included angle; one end of the main part, which is opposite to the blood vessel inner retaining part is provided with a seal element; the seal element is provided with a through hole which is opposite to the blood vessel inner retaining part; the puncture needle is inserted or returned away from the main part by the through hole, and the needle tip extends out of the blood vessel inner retaining part when being inserted. After the needle tip successfully punctures, the puncture needle is returned from the needle tube; meanwhile, the blood vessel inner retaining part of the needle tube is retained in a human body and is in direct contact with the blood vessel and blood corpuscles; the damage to the vascular endothelium and erythrocytes is reduced to the maximum, and the probability for generating severe consequences, such as blood vessel puncture, and the like is also reduced to the maximum.
Description
Technical field
This utility model relates to medical apparatus and instruments, more particularly, but relates to fistula needle in a kind of withdraw of the needle core formula.
Background technology
Along with the development of medical skill, the use of interior fistula needle more and more widely.Mainly using under the situation below of present this apparatus:
When the patient of the serious interior environment disorder that 1, acute or chronic renal failure, diabetes etc. caused carries out dialysis treatment;
2, need to carry out unicellular adopting when amassing in leukaemic's treatment;
3, in the composition blood donation, also can use and be similar to the machine of singly adopting that hematology uses, can use interior fistula needle equally, different is that this interior fistula needle is connected on the more strict harvester of requirement;
4, other situation.
Normally syringe needle is thicker for fistula needle in widely used clinically at present, and needle point is very sharp; And be retained in the intravital time of people generally above 1 hour, therefore may there be following risk:
1, the patient of Consciousness is in using during fistula needle, unavoidable activity such as replacing position takes place, and this just might cause sharp fistula syringe needle injured blood vessel endothelium to some extent, causes the generation of corresponding complication;
When 2, the part patient goes dialysis treatment or in the process of dialysis treatment, the limbs that may take place are in various degree twitched even disturbance of consciousness, even some is Unpredictability, in this case, sharp interior fistula needle head just may cause more serious consequence, even threatens patient's life;
3, in order to keep the operation of blood in dialysis machine or Dan Caiji, need the blood in the blood vessel be aspirated, the higher erythrocyte of fragility is at a high speed by sharp interior fistula needle head the time like this, a large amount of cell injury may take place even break, thereby cause the loss of erythrocytic quality and quantity in the blood; And the patient of needs row dialysis treatment, the health general status is relatively poor often, and majority is in anemia state, and erythrocytic losing concerning them may be dangerous, and weight person may jeopardize patient's life.
The utility model content
The technical problems to be solved in the utility model is, and is sharp at the needle point of the interior fistula needle of prior art, and need be retained in the intravital defective of people, but provide a kind of after finishing puncture fistula needle in the withdraw of the needle core formula.
The technical scheme that its technical problem that solves this utility model adopts is: but fistula needle in a kind of withdraw of the needle core formula comprises separable needle tubing and puncture needle;
Described puncture needle comprises needle body and the syringe needle that is provided with at described needle body one end;
Described needle tubing comprises the main part of hollow, indwelling portion and hollow connecting portion that connection is set at the other end of described main part in an end of described main part is provided with the hollow blood vessel of connection; Described connecting portion and described main part have certain angle;
Described main part is provided with sealing member at an end relative with indwelling portion in the described blood vessel; Described sealing member be provided with described blood vessel in the relative through hole of indwelling portion; Described puncture needle inserts or withdraws from described main part through described through hole, and described syringe needle stretches out indwelling portion in the described blood vessel when inserting.
But in the fistula needle, the outside of described main part is provided with Guan Yi in withdraw of the needle core formula of the present utility model.
But in withdraw of the needle core formula of the present utility model in the fistula needle, the handle that is provided with at the described needle body other end.
But in the fistula needle, the front end of indwelling portion is a round blunt portion in the described blood vessel in withdraw of the needle core formula of the present utility model.
But in the fistula needle, indwelling portion is an indwelling portion in the soft plastics blood vessel in the described blood vessel in withdraw of the needle core formula of the present utility model.
But in the fistula needle, described connecting portion is provided with the flow-control folder in withdraw of the needle core formula of the present utility model.
But in the fistula needle, at described main part and described connecting portion link position place, described main part extends outward installation portion in withdraw of the needle core formula of the present utility model; Described sealing member is arranged in the described installation portion.
But in the fistula needle, the end of described installation portion is provided with the sealing-plug of the described installation portion of shutoff by bindiny mechanism in withdraw of the needle core formula of the present utility model; Perhaps, the through hole of described sealing member is unidirectional through hole.
But in the fistula needle, described connecting portion is connected with described main part rounding off in withdraw of the needle core formula of the present utility model; With the outside of described connecting portion link position, described main part is provided with installing hole, described sealing member is fixedly mounted on the described installing hole, and the through hole of described sealing member is unidirectional through hole.
But in the fistula needle, described connecting portion is connected with described main part rounding off in withdraw of the needle core formula of the present utility model; Described sealing member is the outside sidewall of described main part and described connecting portion link position, and described through hole is provided with on the sidewall of the described outside.
Enforcement the utlity model has following beneficial effect: by puncture needle is separated setting with needle tubing, after the lancet puncture success, puncture needle is withdrawed from from needle tubing, at this moment being retained in the people intravital is the interior indwelling portion of blood vessel of needle tubing, thereby what directly contact with blood vessel and hemocyte is indwelling portion in the blood vessel, blood vessel endothelium, erythrocytic damage are reduced to minimum, the probability of stabbing serious consequences such as blood vessel also drops to minimum.
The front end of indwelling portion in the blood vessel can also be made round blunt portion, and adopt soft plastics to make, thereby further lower blood vessel endothelium, erythrocytic damage.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
But Fig. 1 is the combinative structure sketch map of first embodiment of fistula needle in this utility model withdraw of the needle core formula;
But Fig. 2 is the decomposition texture sketch map of first embodiment of fistula needle in this utility model withdraw of the needle core formula;
But Fig. 3 is the sketch map of the needle tubing after the sealing-plug shutoff of first embodiment of fistula needle in this utility model withdraw of the needle core formula;
But Fig. 4 is the decomposition texture sketch map of second embodiment of fistula needle in this utility model withdraw of the needle core formula;
But Fig. 5 is the decomposition texture sketch map of the 3rd embodiment of fistula needle in this utility model withdraw of the needle core formula.
The specific embodiment
As shown in Figure 1, but be first embodiment of fistula needle in the withdraw of the needle core formula of the present utility model, comprise separable needle tubing 110 and puncture needle 130.After puncture needle 130 punctures successfully, puncture needle 130 is withdrawed from from needle tubing 110, at this moment being retained in the people intravital is the interior indwelling portion 112 of blood vessel of needle tubing 110, thereby what directly contact with blood vessel and hemocyte is indwelling portion 112 in the blood vessel, blood vessel endothelium, erythrocytic damage are reduced to minimum, the probability of stabbing serious consequences such as blood vessel also drops to minimum.
This puncture needle 130 comprises needle body 131 and the syringe needle 132 that is provided with at needle body 131 1 ends.This needle body 131 can adopt metal to make, and is elongate, runs through in the needle tubing 110.Syringe needle 132 is in an end setting of needle body 131, and form commonly used is sharp taper or wedge shape, is used to pierce through the skin of human body.This syringe needle 132 reaches the outside of the interior indwelling portion 112 of blood vessel of needle tubing 110, and its diameter can be arranged to be substantially equal to or be slightly less than the diameter of indwelling portion 112 in the blood vessel, enters human body thereby make things convenient for the interior indwelling portion 112 of blood vessel to follow syringe needle 132.
Further, needle body 131 is provided with handle 133 at the end away from syringe needle 132, and needle body 131 is fixing in aggregates with handle 133, thus convenient extracting to whole puncture needle 130.The shape of this handle 133, material etc. can be arbitrarily, control as long as be convenient to.Further, on handle 133, can also be provided with projection or decorative pattern 134, thereby increase friction, more help operation.
This needle tubing 110 comprises the main part 111 of hollow, indwelling portion 112 and the hollow connecting portion 113 that is provided with at the other end of main part 111 in the blood vessel of the hollow that an end of main part 111 is provided with.This connecting portion 113 is connected with Medical Equipmentes such as dialysis machine, Dan Caiji by union joint.Indwelling portion 112 and connecting portion 113 are communicated with in this main part 111, blood vessel, form be communicated with get the liquid passage, thereby with the blood of human body etc. by get the liquid passage be transported to Medical Equipment in, further handle.
As shown in the figure, have certain angle between this connecting portion 113 and the main part 111, thereby make the plug of puncture needle 130 can not be affected, the convenient use, and can guarantee the stability that puncture needle 130 is extracted, avoid producing unnecessary harm.Understandable, can be provided with flow-control folder 114 on this connecting portion 113, control the speed that drawing liquid enters Medical Equipment by adjusting flow-control folder 114.
Indwelling portion 112 is arranged at an end of main part 111 in the blood vessel, and diameter is much smaller than main part 111, thereby is convenient to be inserted into human body, and the blood of human body etc. is incorporated into main part 111.Preferably, indwelling portion 112 adopts soft plastics to make in this blood vessel, and the Front-end Design of indwelling portion 112 in the blood vessel is become round blunt portion 115, thereby further lower, and drop to minimum stabbing the probability after seriously such as blood vessel to blood vessel endothelium, erythrocytic damage.Understandable, indwelling portion 112 also can adopt other material to make as required in this blood vessel; The front end of indwelling portion 112 also can be made other shapes in the blood vessel.
Also be provided with the pipe wing 116 in the outside of main part 111, thereby behind successful inserting needle, can fix the pipe wing 116 with adhesive tape, thereby fistula needle in whole is had good positioning, further guarantee stable, safety.
This main part 111 is provided with sealing member 117 at the other end relative with indwelling portion 112 in the blood vessel, on sealing member 117, be provided with the through hole 118 relative with indwelling portion 112 in the blood vessel, this puncture needle 130 inserts or withdraws from main part 111 through this through hole 118, and when syringe needle 132 inserts, stretch out the outside of indwelling portion 112 in the blood vessel; When syringe needle 132 withdrawed from, sealing member 117 can play the better seal effect, prevented that blood from flowing out.In the present embodiment, in the position that main part 111 is connected with connecting portion 113, main part 111 extends outward installation portion 119, and sealing member 117 is installed in the installation portion 119, thereby has guaranteed the stable plug of puncture needle 130.
Further, the end at this installation portion 119 also is provided with sealing-plug 120 (see figure 3)s by bindiny mechanism.In the present embodiment, sealing plug 120 is a sealing nut, and bindiny mechanism is at the installation portion 119 terminal screw threads that are provided with, pass through threaded engagement, sealing nut is tightened in the end of installation portion 119, thereby installation portion 119 is sealed, prevent effectively that further blood from flowing out.Understandable, sealing-plug 120 also can adopt other version, for example, adopts rubber closure or plastic plug etc., directly blocks the end of installation portion 119; Perhaps, the through hole 118 of sealing member 117 is designed to unidirectional through hole 118, after puncture needle 130 is extracted, directly with through hole 118 sealings; Perhaps other any can be with structure of the through hole 118 of sealing member 117 or installation portion 119 sealings, can not flow out as long as guarantee the blood extracted out etc. by installation portion 119 or through hole 118.
During assembling, through hole 118 one sides of puncture needle 130 from sealing member 117 are inserted in the main part 111 of needle tubing 110, stretch out indwelling portion 112 certain-lengths in the blood vessel up to the head of puncture needle 130, handle 133 is resisted against till the installation portion 119 simultaneously.
In use, at first flow-control folder 114 folders are closed; Then, choose the site of puncture, puncture inserting needle in sterilization back utilizes the syringe needle 132 of puncture needle 130 to pierce through; After the inserting needle success, buttress the interior indwelling portion 112 of blood vessel on the other hand and also push away forward gently, another pulls the handle 133 of puncture needle 130, puncture needle 130 is pulled out gently, this moment, sharp syringe needle 132 withdrawed from human body, only stayed the interior indwelling portion 112 of blood vessel in human body, thereby had reduced damage etc.; After puncture needle 130 is pulled out,, avoid blood to pass through through hole 118 outflows of sealing member 117 rapidly with the end of sealing nut sealing installation portion 119; Handle puncture place well with sticker then, the flank of fistula needle in the blended rubber band fixes is connected to the pipeline of dialysis machine, Dan Caiji etc. with the union joint of connecting portion 113, opens flow-control folder 114, carries out drawing liquid.
As shown in Figure 4, but be second embodiment of fistula needle in the withdraw of the needle core formula of the present utility model, the difference of itself and first embodiment is, is that rounding off is connected between the connecting portion 213 of needle tubing 210 and the main part 211; The outside in the position that is connected with connecting portion 213, this main part 211 is provided with installing hole, and sealing member 217 is fixedly mounted on the installing hole, and the through hole 218 of sealing member 217 is unidirectional through hole 218, and other structures and first embodiment are basic identical.The structure of the interior fistula needle of present embodiment is more simple, uses, stores convenient.
As shown in Figure 5, but be the 3rd embodiment of fistula needle in the withdraw of the needle core formula of the present utility model, the difference of itself and first embodiment is that the connecting portion 313 of needle tubing 310 is connected with main part 311 rounding ofves; And, directly the outside sidewall 317 of the main consuming body portion 311 and connecting portion 313 link positions is as sealing member, and simultaneously, through hole 318 is provided with on this outside sidewall 317, certainly, this through hole 318 can or use these through holes 318 of sealing such as rubber stopper, plastic cement plug for unidirectional through hole 318.Present embodiment has omitted the independently part of sealing member, and structure is more simple.
Claims (10)
1. but the interior fistula needle of withdraw of the needle core formula is characterized in that, comprises separable needle tubing and puncture needle;
Described puncture needle comprises needle body and the syringe needle that is provided with at described needle body one end;
Described needle tubing comprises the main part of hollow, indwelling portion and hollow connecting portion that connection is set at the other end of described main part in an end of described main part is provided with the hollow blood vessel of connection; Described connecting portion and described main part have certain angle;
Described main part is provided with sealing member at an end relative with indwelling portion in the described blood vessel; Described sealing member be provided with described blood vessel in the relative through hole of indwelling portion; Described puncture needle inserts or withdraws from described main part through described through hole, and described syringe needle stretches out indwelling portion in the described blood vessel when inserting.
2. but fistula needle in the withdraw of the needle core formula according to claim 1 is characterized in that the outside of described main part is provided with Guan Yi.
3. but fistula needle in the withdraw of the needle core formula according to claim 1 is characterized in that, at the handle of described needle body other end setting.
4. but fistula needle in the withdraw of the needle core formula according to claim 1 is characterized in that, the front end of indwelling portion is a round blunt portion in the described blood vessel.
5. but fistula needle in the withdraw of the needle core formula according to claim 4 is characterized in that, indwelling portion is an indwelling portion in the soft plastics blood vessel in the described blood vessel.
6. but fistula needle in the withdraw of the needle core formula according to claim 1 is characterized in that, described connecting portion is provided with the flow-control folder.
7. but according to fistula needle in each described withdraw of the needle core formula of claim 1 to 5, it is characterized in that at described main part and described connecting portion link position place, described main part extends outward installation portion; Described sealing member is arranged in the described installation portion.
8. but fistula needle in the withdraw of the needle core formula according to claim 7 is characterized in that the end of described installation portion is provided with the sealing-plug of the described installation portion of shutoff by bindiny mechanism; Perhaps, the through hole of described sealing member is unidirectional through hole.
9. but according to fistula needle in each described withdraw of the needle core formula of claim 1 to 5, it is characterized in that described connecting portion is connected with described main part rounding off; With the outside of described connecting portion link position, described main part is provided with installing hole, described sealing member is fixedly mounted on the described installing hole, and the through hole of described sealing member is unidirectional through hole.
10. but according to fistula needle in each described withdraw of the needle core formula of claim 1 to 5, it is characterized in that described connecting portion is connected with described main part rounding off; Described sealing member is the outside sidewall of described main part and described connecting portion link position, and described through hole is provided with on the sidewall of the described outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202046254U CN201481518U (en) | 2009-09-11 | 2009-09-11 | Returnable needle core type internal fistula tube needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202046254U CN201481518U (en) | 2009-09-11 | 2009-09-11 | Returnable needle core type internal fistula tube needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201481518U true CN201481518U (en) | 2010-05-26 |
Family
ID=42420411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202046254U Expired - Fee Related CN201481518U (en) | 2009-09-11 | 2009-09-11 | Returnable needle core type internal fistula tube needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201481518U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103070720A (en) * | 2013-02-05 | 2013-05-01 | 广州星纳仕医疗器械有限公司 | Percutaneous nephroscope |
| WO2014161414A1 (en) * | 2013-04-03 | 2014-10-09 | 江苏磐宇科技有限公司 | Stab-prevention indwelling needle |
| CN104548318A (en) * | 2013-10-28 | 2015-04-29 | 陶新朝 | Puncture and drainage needle for blood purification |
| CN104587544A (en) * | 2015-02-09 | 2015-05-06 | 北京大学深圳医院 | Improved special puncture needle for hemodialysis fistula |
| CN106659871A (en) * | 2014-07-08 | 2017-05-10 | 贝克顿·迪金森公司 | Peripheral intravenous catheter with winged grip |
-
2009
- 2009-09-11 CN CN2009202046254U patent/CN201481518U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103070720A (en) * | 2013-02-05 | 2013-05-01 | 广州星纳仕医疗器械有限公司 | Percutaneous nephroscope |
| CN103070720B (en) * | 2013-02-05 | 2016-05-11 | 谭国安 | A kind of PCN |
| WO2014161414A1 (en) * | 2013-04-03 | 2014-10-09 | 江苏磐宇科技有限公司 | Stab-prevention indwelling needle |
| CN104548318A (en) * | 2013-10-28 | 2015-04-29 | 陶新朝 | Puncture and drainage needle for blood purification |
| CN106659871A (en) * | 2014-07-08 | 2017-05-10 | 贝克顿·迪金森公司 | Peripheral intravenous catheter with winged grip |
| CN104587544A (en) * | 2015-02-09 | 2015-05-06 | 北京大学深圳医院 | Improved special puncture needle for hemodialysis fistula |
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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: 20100526 Termination date: 20120911 |