CN2930740Y - Blood-outflow-proof arteriovenous retained needle with blood taking opening - Google Patents
Blood-outflow-proof arteriovenous retained needle with blood taking opening Download PDFInfo
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- CN2930740Y CN2930740Y CN 200620033093 CN200620033093U CN2930740Y CN 2930740 Y CN2930740 Y CN 2930740Y CN 200620033093 CN200620033093 CN 200620033093 CN 200620033093 U CN200620033093 U CN 200620033093U CN 2930740 Y CN2930740 Y CN 2930740Y
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- blood
- needle tubing
- flexible glue
- cannule
- lamellar
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Abstract
The utility model relates to a medical arteriovenous infusion apparatus, in particular to an arteriovenous indwelling needle with phlebotomizing orifice capable of being kept in the arteriovenous blood vessels of patient for a long time and preventing blood outward flow, which comprises a sealing cap 1, a needle tubing holder 2, a needle tubing 3, a duct holder 4 and a duct 10 assembled into an integrity with the duct holder, wherein, the duct holder 4 is provided with a mould cavity matched with the front end of the needle tubing holder 2 along the central axial direction; between the mould cavity and the duct 10 is arranged a communicating space. The utility model is characterized in that: inside the communicating space is arranged a piece of movable elastic flexible glue 7 capable of quickly restoring to the original state to close down the channel after the needle tubing 3 being pulled out due to possessing high elasticity; inside the communicating space are also arranged a communicating piece 8, a supporting piece 5 and a phlebotomizing orifice 9, and another supporting piece 5 is disposed at the lower end of the communicating space; the arrangement of the above elements overcomes the well-known disadvantages of indwelling needle such as inconvenient operation and phlebotomizing, easy blood outward flow with cross infection risk and use taboo.
Description
(1) technical field: this utility model relates to a kind of medical apparatus and instruments of medical arteriovenous infusion medicinal liquid, especially a kind of iv cannule that prevents the band blood drawing mouth of blood outflow.
(2) background technology: at present, known iv cannule normally is made up of calparine cap, needle tubing, needle tubing seat, catheter block, conduit, sheath etc.During use, the needle tubing tip punctures the human body arteriovenous, utilizes needle point auxiliary, conduit punctures simultaneously and enters the human body arteriovenous, blood enters in the blood back cavity along needle interior wall, and operator see blood back, shows to puncture successfully, needle tubing is extracted arteriovenous, inlying catheter is retained in the arteriovenous, connects calparine cap occlusion catheter seat mouth again, or connect transfusion, blood exchange transfusion set's interface, infuse, transfuse blood, the common use of known iv cannule that Here it is.But, find that in use there are following serious problems in present known iv cannule, can't be resolved according to the information of the clinical reflection of medical treatment:
1: during use, puncture successfully, after operator see blood back, must be with left hand by tight arteriovenous, the right hand connects off-the-shelf transfusion device interface fast, so that infuse or transfuse blood, if this moment, operator moved unskilled or not by tight puncture place front end arteriovenous, blood outflow accident will take place, cause infecting or cross infection, simultaneously patient is caused psychological negative effect.
2: during use,, easily form blood and contact, form blood infection with air extracting needle tubing and during at infusion medicine (blood) liquid repeatedly, screwing off calparine cap from catheter block and repeatedly screw on again the calparine cap sealing duct seat process.
3: known iv cannule when closing to an end, must have the special messenger to nurse in transfusion (blood), and (blood) device interface of in time will infusing is extracted, and connects calparine cap occlusion catheter seat mouth.Otherwise, will cause that a large amount of backflow of blood feed back liquid (blood) pipe, even cause malpractice.
4: present known iv cannule need to extract patient blood if having simultaneously in infusion process, and medical personnel draw blood at just must the reuse syringe puncture other positions of patient, and this has increased the weight of patient's misery virtually.
5: after known iv cannule uses first, if need to keep somewhere, must mix calparine cap at the catheter block interface, add a certain amount of heparin liquid in calparine cap, prevent blood coagulation, this is present general way.But according to the medical science experience, some patient can not use heparin liquid, and this just means that these patients can not use iv cannule.
(3) utility model content: problem to be solved in the utility model will provide a kind of processing ease, technology easily to guarantee, can not occur blood outflow exactly, can cross infection, and the iv cannule that does not need calparine cap can draw blood again simultaneously.
For addressing the above problem, technical solution of the present utility model is as follows: a kind of iv cannule that prevents the band blood drawing mouth of blood outflow, comprise and seal medicated cap, needle tubing, the needle tubing seat, catheter block reaches and catheter block assembling all-in-one-piece conduit, the catheter block center is axially arranged with the die cavity that matches with needle tubing seat front end, be provided with connected space between die cavity and the conduit, it is characterized in that: be provided with a slice no-toxicity medical lamellar elasticity flexible glue in the described connected space, described lamellar elasticity flexible glue is movable up and down, be provided with a connectedness in the top, be provided with a support member in its lower end, be provided with the blood drawing mouth that a rubber stopper is blocked at the front end place of connected space.
As further setting of the present utility model: described connectedness axial centre has a through hole, and has the mutual disconnected boss of wire or wire nail shape by an end of lamellar elasticity flexible glue, so that during transfusion (blood), liquid can pass through from the gap between these boss; Described support member axial centre has a through hole, and is smooth flat or wire anchor ring by an end of lamellar elasticity flexible glue, and support member waist place is provided with an annular seal ring, is used for sealing.In this utility model, the material of described lamellar elasticity flexible glue is rubber preferably, and the surrounding edge shape can be an arbitrary shape, and preferably circular or square certainly, when producing assembling, needle tubing directly passes the center of lamellar elasticity flexible glue.In use, the puncture vessel success and extract needle tubing after, lamellar elasticity flexible glue is stayed in the connected space, simultaneously because the elasticity that lamellar elasticity flexible glue itself has, after needle tubing is extracted, lamellar elasticity flexible glue is not stayed hole by the place that needle tubing punctured, but recovered the plane original state, and be attached on the smooth flat or wire anchor ring of support member upper end, under the blood pressure effect that refluxes, the smooth flat or the wire anchor ring of lamellar elasticity flexible glue and support member upper end paste tightlyer, have further improved sealing property, so can prevent reliably that blood from outwards flowing backwards; During as need transfusions (blood), as long as the transfusion device interface is inserted catheter block, under the pressure of injection, liquid backs down lamellar elasticity flexible glue, making and floating to the lower surface that touch connectedness on the lamellar elasticity flexible glue is on the boss, and is provided with the gap between lamellar elasticity flexible glue surrounding edge and the catheter block inwall, so injection is just by above-mentioned gap and along gap between the boss of connectedness lower surface and the intermediary hole of connectedness, enter conduit, further enter human body.The transfusion (blood) finish, unplug the transfusion device interface after, lamellar elasticity flexible glue is closed the intermediary through hole of support member automatically under the blood pressure effect.In addition, the sealing ring at support member waist place will seal between support member and the catheter block again, and the blood that therefore can avoid fully causing because of misoperation refluxes, can avoid cross infection, blood is enclosed in the catheter block front end, does not have the danger that blood refluxes fully, also need not monitoring during transfusion; Draw blood as needing in the infusion process, only need the transfusion device interface is extracted, connect sealing medicated cap,, can draw blood the rubber stopper of the syringe insertion blood drawing mouth of band pin, the blood drawing extraction syringe needle that finishes, rubber stopper seals automatically by elasticity, pulls up and seals medicated cap, connects the transfusion device interface again, transfusion be can continue again, so just misery that patient repeatedly punctured and medical personnel's workload reduced widely.In addition, can prevent the iv cannule of the band blood drawing mouth of blood outflow, owing to there is not the danger of outflow, do not contact the generation blood coagulation with air so worry blood, therefore again do not need calparine cap, the substitute is a kind of common medicated cap that seals, when its role is just drawn blood occluded air and when keeping somewhere the confined bed mouth of pipe avoid the effect of outside contamination, thereby any patient all can use, and no longer has any use taboo.
Below in conjunction with accompanying drawing this utility model is described further, and provides specific embodiment.
(4) description of drawings: Fig. 1 is this utility model specific embodiment schematic appearance;
Fig. 2 is this utility model specific embodiment structure cutaway view;
State diagram when Fig. 3 infuses for this utility model specific embodiment;
State diagram when Fig. 4 keeps somewhere for this utility model specific embodiment;
Fig. 5 is a kind of embodiment axonometric chart of connectedness in this utility model;
Fig. 6 is the another kind of embodiment axonometric chart of connectedness in this utility model;
Fig. 7 is this utility model specific embodiment STRUCTURE DECOMPOSITION sketch map.
(5) specific embodiment: as Fig. 1,2,3, shown in 4, can prevent the iv cannule of the band blood drawing mouth of blood outflow, comprise and seal medicated cap 1, needle tubing seat 2, needle tubing 3, catheter block 4, blood drawing mouthfuls 9 and be fixed in the conduit 10 of catheter block 4 front ends, catheter block 4 centers are axially arranged with the die cavity that matches with needle tubing seat 2, be provided with connected space between die cavity and the conduit 10, be provided with a slice lamellar elasticity flexible glue 7 in this connected space, a connectedness 8 with catheter block 4 inwall interference fit is equipped with in the top of described lamellar elasticity flexible glue 7, and the below is provided with a support member 5 with catheter block 4 respective inner walls interference fit.Described lamellar elasticity flexible glue 7 is movable up and down, its surrounding edge shape can be an arbitrary shape, preferably circular or square, so that processing, its upper and lower surface is the plane, is gapped between its surrounding edge and the catheter block respective inner walls so that when transfusion liquid can pass through, its material is a no-toxicity medical elasticity flexible glue, rubber preferably is because rubber has high resiliency, after needle tubing 3 is extracted during use, the place that described lamellar elasticity flexible glue 7 central authorities were punctured by needle tubing 3, restore to the original state rapidly, do not stay any vestige, that is to say, after needle tubing 3 was extracted, blood can not leak out from the place that needle tubing 3 punctured.Described connectedness 8 has mutual disconnected wire boss 15 (see figure 5)s or wire nail shape boss 16 (see figure 6)s by an end of lamellar elasticity flexible glue, owing to be not communicated with mutually between these boss, so during transfusion (blood), liquid can pass through from the gap between these boss, connectedness 8 axial centre are a through hole 14 so that when transfusion liquid can pass through.Described support member 5 waists are provided with a sealing ring 6, support member 5 and sealing ring 6 are assembled into periphery and catheter block 4 respective inner walls interference fit after the one, prevent that liquid from oozing out, support member 5 axial centre are a through hole 13, the passage of liquid during as transfusion, support member 5 upper ends are smooth flat (contacting with 7 of lamellar elasticity flexible glues during sealing) or wire anchor ring (contacting with lamellar elasticity flexible glue 7 lines during sealing).During transfusion (blood), under the pressure of injection, liquid backs down lamellar elasticity flexible glue 7, so the gap around through hole 13 and through hole 14 and the lamellar elasticity flexible glue has formed fluid passage 11 (see figure 3)s, transfusion (blood) is smooth; Transfusion (blood) finishes, and unplugs transfusion (blood) joint 12, and lamellar elasticity flexible glue 7 is close to the smooth flat or the wire anchor ring of support member 5 upper ends under the blood pressure effect, close through hole 13 automatically, thereby realizes reliably preventing the blood outflow.As needing blood drawing, only need transfusion (blood) joint 12 is extracted in the infusion process, connect sealing medicated cap 1, the hemospast of band pin is inserted rubber stopper 9, and blood drawing finishes, and rubber stopper 9 seals automatically, unplug and seal medicated cap 1, connect transfusion (blood) joint 12, can continue transfusion (blood) again.
Claims (6)
1, can prevent the iv cannule of the band blood drawing mouth of blood outflow, comprise and seal medicated cap (1), needle tubing seat (2), needle tubing (3), catheter block (4), be fixed in the conduit (10) of catheter block (4) front end, blood drawing mouthful (9), catheter block (4) center is axially arranged with the die cavity that matches with needle tubing seat (2) front end, die cavity and conduit are provided with connected space between (10), it is characterized in that: be provided with the active lamellar elasticity of a slice flexible glue (7) in the described connected space, lamellar elasticity flexible glue (7) top is provided with a connectedness (8) that fluid passage is arranged, the below is provided with a support member that can allow liquid pass through or seal (5), is provided with a blood drawing mouth (9) with the plug sealing between connected space and the conduit (10).
2, the iv cannule that prevents the band blood drawing mouth of blood outflow according to claim 1, it is characterized in that: the upper and lower surface of described lamellar elasticity flexible glue (7) is the plane, and surrounding edge can be arbitrary shape.
3, the iv cannule that prevents the band blood drawing mouth of blood outflow according to claim 1 is characterized in that: the activity space interval that has feed shape elasticity flexible glue (7) to open and close up and down between connectedness (8) and the support member (5).
4, the iv cannule that prevents the band blood drawing mouth of blood outflow according to claim 1 is characterized in that: on the lateral surface of support member (5), be provided with annular seal ring (6).
5, the iv cannule that prevents the band blood drawing mouth of blood outflow according to claim 1, it is characterized in that: the upper end of support member (5) is smooth flat or wire anchor ring.
6, the iv cannule that prevents the band blood drawing mouth of blood outflow according to claim 1, it is characterized in that: connectedness (8) has disconnected boss (15 or 16) by on the end face of lamellar elasticity flexible glue (7), and its shape can be arbitrary shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620033093 CN2930740Y (en) | 2006-02-12 | 2006-02-12 | Blood-outflow-proof arteriovenous retained needle with blood taking opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620033093 CN2930740Y (en) | 2006-02-12 | 2006-02-12 | Blood-outflow-proof arteriovenous retained needle with blood taking opening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2930740Y true CN2930740Y (en) | 2007-08-08 |
Family
ID=38347242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620033093 Expired - Fee Related CN2930740Y (en) | 2006-02-12 | 2006-02-12 | Blood-outflow-proof arteriovenous retained needle with blood taking opening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2930740Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112675408A (en) * | 2019-10-18 | 2021-04-20 | 贝克顿·迪金森公司 | Catheter system |
-
2006
- 2006-02-12 CN CN 200620033093 patent/CN2930740Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112675408A (en) * | 2019-10-18 | 2021-04-20 | 贝克顿·迪金森公司 | Catheter system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |