CN203915654U - A kind of venous detaining needle with malleation anti-backflow device - Google Patents
A kind of venous detaining needle with malleation anti-backflow device Download PDFInfo
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- CN203915654U CN203915654U CN201420324457.3U CN201420324457U CN203915654U CN 203915654 U CN203915654 U CN 203915654U CN 201420324457 U CN201420324457 U CN 201420324457U CN 203915654 U CN203915654 U CN 203915654U
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- needle
- catheter block
- push rod
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- conduit
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Abstract
The utility model discloses a kind of venous detaining needle with malleation anti-backflow device; it comprises the remaining needle syringe needle being made up of protective sleeve, needle tubing, conduit, metal wedge, catheter block and needle handle; feature is: batching pig and push rod are assembled into one; be assemblied in catheter block chamber; be provided with front limit bayonet socket and rear spacing bayonet socket in the rear end in catheter block chamber; push rod can snap in respectively in front limit bayonet socket and rear spacing bayonet socket, to prevent that batching pig from retreating.By promoting push rod, batching pig is promoted forward at catheter block intracavity, snap in front limit bayonet socket, form malleation, medicinal liquid in conduit is flowed to intravenous, anti-Hemostatic Oral Liquid remains in conduit and obstruction conduit, simultaneously, the inlet of batching pig closed metal wedge, prevents that intravenous blood from, because vein pressure enters in conduit, reaching the function of counterflow-preventing.This utility model is simple in structure, easy to operate, reduces phlebitis occurrence probability, simplifies nursing procedure step, alleviates medical personnel's working strength.
Description
Technical field
This utility model relates to a kind of aseptic medical equipment, especially relates to a kind of venous detaining needle with malleation anti-backflow device that medical institutions are used clinically.
Background technology
Venous detaining needle because thering is the patient vessel puncture time of minimizing, reduce intravenous extravasation, alleviate medical personnel's workload, be conducive to clinical application and critical patient promptly rescues, improves the plurality of advantages such as salvage success rate, safety and effectiveness are good, applied in clinical treatment more and more widely.
Along with scientific and technological development, venous detaining needle has also experienced technological innovation repeatedly, existing many enterprises have produced the venous detaining needle with positive pressure connector, because of the complicated structure of positive pressure connector, often formed by several parts, comprise the parts such as sealing ring and spring, if control process is bad with regard to easy-to-leak liquid, cause substandard products.Positive pressure connector is generally all assemblied in the end of retaining needle flexible tube, after using this retention needle infusion to finish, need to carry out washing pipe, the nursing of tube sealing, adopt syringe to extract tube sealing or washing pipe liquid, be connected with the inner circle taper hole of positive pressure connector, inject tube sealing or washing pipe liquid, last syringe conehead in the time extracting from the inner circle taper hole of positive pressure connector, can produce micro-malleation, the malleation producing can pour the medicinal liquid in indwelling needle catheter in Venous system from conduit, because washing pipe or tube-sealing solution have anticoagulant effect, can anti-Hemostatic Oral Liquid in the conduit of remaining needle and solidify, avoid conduit blocked, thereby reduce phlebitic generation.
Ye You enterprise has produced the venous detaining needle with counterflow-preventing function, in the catheter block of remaining needle, be provided with incision can folding valve, in clinical use, the valve of this folding is often because a variety of causes can not really play counterflow-preventing function.
At present, on market, also there is no a kind of venous detaining needle that malleation and counterflow-preventing function are integrated, therefore, design is a kind of with malleation anti-backflow device, simple in structure, easily processing, easy and simple to handle, safe and effective venous detaining needle just seems particularly important.
Summary of the invention
The purpose of this utility model is to provide a kind of venous detaining needle with malleation anti-backflow device, and this device has advantages of can produce malleation, can prevent that blood back flow from entering conduit and obstruction conduit, the phlebitic occurrence probability of reduction, simplify nursing procedure step, alleviate medical personnel's working strength, simple in structure, easy to operate.
The purpose of this utility model is achieved in that
A kind of venous detaining needle with malleation anti-backflow device, comprise by protective sleeve, needle tubing, conduit, metal wedge, the remaining needle syringe needle of catheter block and needle handle composition, be sleeved on catheter block for the protection of the protective sleeve of conduit, front end at needle handle is fixed with needle tubing, feature is: the guide hole that is positioned at front end and the catheter block chamber that is positioned at rear end that in catheter block, are provided with connection, the internal diameter of guide hole is less than the internal diameter in catheter block chamber, in the junction in guide hole and catheter block chamber, the front end of the hose connection seat of catheter block sidewall is provided with wedge shape union joint, be provided with front limit bayonet socket and rear spacing bayonet socket in the rear end in catheter block chamber, be fixed with the metal wedge of hollow in the rear end of conduit, the front end of conduit extend in protective sleeve through guide hole, and the rear end of conduit is interference fit and is sleeved in guide hole, and metal wedge is close to and is stuck on wedge shape union joint, catheter block intracavity be provided with cylindric and with the close-fitting batching pig of inwall in catheter block chamber, batching pig can slide before and after catheter block intracavity is done, the front end of batching pig is close-fitting taper for inserting in metal wedge and with metal wedge, be provided with front bayonet and rear through hole to after-opening and connection in the rear end of batching pig, the internal diameter of front bayonet is greater than the internal diameter of rear through hole, push rod is by the front dop being connected as a single entity, connecting rod, rear handle and handle composition, connecting rod in the middle of being positioned at connects together the rear handle of front taper of front end dop and rear end, before taper, the external diameter of dop is greater than the external diameter of connecting rod, being provided with kelly in the outside of rear handle is connected with handle, for promoting, push rod moves forward and backward handle, the rear handle of push rod is arranged in catheter block chamber, in the front bayonet of the front dop embedding batching pig of push rod, push rod and batching pig assembling are connected as a single entity, the kelly of push rod can snap in front limit bayonet socket and the rear spacing bayonet socket in catheter block chamber, to prevent that batching pig from retreating, be provided with in the centre of push rod and allow needle tubing pass and the push rod needle tubing hole coaxial with batching pig needle tubing hole, needle tubing assembles and is fixed in needle handle, and the antetheca of needle handle is assemblied in the end in catheter block chamber, and when use, the angle of hand-held needle handle scalable puncture vein punctures.
Surface at handle is provided with anti-slip veins, is convenient to promote push rod.
This utility model is made up of remaining needle syringe needle, batching pig and push rod; remaining needle syringe needle is made up of protective sleeve, needle tubing, conduit, metal wedge, catheter block and needle handle; after being combined into one, batching pig and push rod be assemblied in catheter block intracavity; needle tubing is successively by the push rod needle tubing hole of push rod, the batching pig needle tubing hole of batching pig; from conduit, pass; needle handle packs in catheter block; the hose connection seat of catheter block sidewall can be connected with the Connection Block of venous detaining needle or other accessories by flexible pipe; form the complete venous detaining needle product for infusing, for clinical transfusion.Described batching pig is polyisoprene material or silica gel material, has elasticity.
This utility model is after each transfusion finishes, can be by promoting push rod, batching pig is promoted forward at catheter block intracavity, snap in the front limit bayonet socket of catheter block, form malleation, medicinal liquid in conduit is flowed to intravenous, anti-Hemostatic Oral Liquid remains in conduit and obstruction conduit, meanwhile, and the inlet of the metal wedge in batching pig sealing remaining needle syringe needle, prevent that intravenous blood from, because vein pressure enters in conduit, reaching the function of counterflow-preventing.In the time that venous detaining needle need to be infused again, push rod can be promoted backward, snap in the rear spacing bayonet socket of catheter block, open the inlet passage of metal wedge, can continue transfusion.
The utlity model has following advantage:
1, when transfusion finishes, in the process that batching pig is promoted forward, this utility model can produce malleation, this malleation can push blood residual in the catheter lumen being retained in patient's Venous system blood vessel or medicinal liquid in Venous system, and do not need as common venous detaining needle to use heparin and normal saline mixed solution anticoagulant tube sealing, only need 0.9% sodium chloride injection washing pipe tube sealing, avoid blood back flow obstruction conduit, save nursing time and nursing consumptive material, also widened the scope of application of remaining needle.
2, reduce the probability that conduit stops up and phlebitis occurs, simplified remaining needle nursing procedure step, alleviated medical personnel's working strength, extended the service life of remaining needle.
3, simple in structure, easily processing, clinical manipulation is easy to use, can extensive use clinical.
Brief description of the drawings
Fig. 1 is the structural representation of this utility model in the time of rear spacing bayonet socket;
Fig. 2 is the structural representation of catheter block;
Fig. 3 is the structural representation of conduit and metal wedge;
Fig. 4 is the structural representation that batching pig and push rod are combined;
Fig. 5 is the structural representation that batching pig separates with push rod;
Fig. 6 is the structural representation of needle tubing and needle handle;
Fig. 7 is the structural representation of this utility model in the time of front limit bayonet socket.
Detailed description of the invention
Below in conjunction with embodiment and contrast accompanying drawing this utility model is described in further detail.
Embodiment 1:
A kind of venous detaining needle with malleation anti-backflow device, comprise by protective sleeve 1, needle tubing 2, conduit 3, metal wedge 4, the remaining needle syringe needle 9 that catheter block 6 and needle handle 8 form, be sleeved on catheter block 6 for the protection of the protective sleeve 1 of conduit 3, be fixed with needle tubing 2 at the front end of needle handle 8, in catheter block 6, be provided with the guide hole that is positioned at front end 61 and the catheter block chamber 64 that is positioned at rear end of connection, the internal diameter of guide hole 61 is less than the internal diameter in catheter block chamber 64, in the junction in guide hole 61 and catheter block chamber 64, the front end of the hose connection seat 63 of catheter block 6 sidewalls is provided with wedge shape union joint 62, be provided with front limit bayonet socket 65 and rear spacing bayonet socket 66 in the rear end in catheter block chamber 64, be fixed with the metal wedge 4 of hollow in the rear end of conduit 3, the front end of conduit 3 extend in protective sleeve 1 through guide hole 61, and the rear end of conduit 3 is interference fit and is sleeved in guide hole 61, and metal wedge 4 is close to and is stuck on wedge shape union joint 62, in catheter block chamber 64, be provided with cylindric and with the close-fitting batching pig 5 of inwall in catheter block chamber 64, batching pig 5 can slide before and after interior work in catheter block chamber 64, the front end 51 of batching pig 5 is close-fitting taper for inserting in metal wedge and with metal wedge 4, be provided with front bayonet 52 and rear through hole 53 to after-opening and connection in the rear end of batching pig 5, the internal diameter of front bayonet 52 is greater than the internal diameter of rear through hole 53, push rod 7 is by the front dop 71 being connected as a single entity, connecting rod 72, rear handle 73 and handle 74 form, connecting rod 72 in the middle of being positioned at connects together the rear handle 73 of front taper of front end dop 71 and rear end, before taper, the external diameter of dop 71 is greater than the external diameter of connecting rod 72, be provided with kelly 76 is connected with handle 74 in the outside of rear handle 73, for promoting, push rod 7 moves forward and backward handle 74, the rear handle 73 of push rod 7 is arranged in catheter block chamber 64, the front dop 71 of push rod 7 embeds in the front bayonet 52 of batching pig push rod 7 and batching pig 5 assemblings is connected as a single entity, the kelly 76 of push rod 7 can snap in front limit bayonet socket 65 and the rear spacing bayonet socket 66 in catheter block chamber 64, to prevent that batching pig 5 from retreating, be provided with in the centre of push rod 7 and allow needle tubing 2 pass and the push rod needle tubing hole 77 coaxial with batching pig needle tubing hole, needle tubing 2 assembles and is fixed in needle handle 8, and the antetheca 81 of needle handle 8 is assemblied in the end in catheter block chamber 64, and when use, the angle of hand-held needle handle scalable puncture vein punctures.
Be provided with anti-slip veins 75 on the surface of pusher grip 74, be convenient to promote push rod 7.
This utility model is after the each transfusion of remaining needle finishes, can be by promoting push rod 7, batching pig 5 is promoted forward in catheter block 6, and the kelly 76 of push rod 7 snaps in catheter block front limit bayonet socket 61, forms malleation, medicinal liquid in conduit 3 is flowed to intravenous, anti-Hemostatic Oral Liquid remains in conduit and obstruction conduit 3, and meanwhile, batching pig 5 seals the metal wedge inlet 41 in remaining needle syringe needle, prevent that intravenous blood from, because vein pressure enters in conduit 3, reaching the function of counterflow-preventing.In the time that venous detaining needle need to be infused again, push rod 7 can be promoted backward, the kelly 76 of push rod 7 snaps in spacing bayonet socket 62 after catheter block, opens metal wedge inlet passage 41, can continue transfusion.
Claims (2)
1. the venous detaining needle with malleation anti-backflow device, comprise by protective sleeve, needle tubing, conduit, metal wedge, the remaining needle syringe needle of catheter block and needle handle composition, be sleeved on catheter block for the protection of the protective sleeve of conduit, front end at needle handle is fixed with needle tubing, it is characterized in that: the guide hole that is positioned at front end and the catheter block chamber that is positioned at rear end that in catheter block, are provided with connection, the internal diameter of guide hole is less than the internal diameter in catheter block chamber, in the junction in guide hole and catheter block chamber, the front end of the hose connection seat of catheter block sidewall is provided with wedge shape union joint, be provided with front limit bayonet socket and rear spacing bayonet socket in the rear end in catheter block chamber, be fixed with the metal wedge of hollow in the rear end of conduit, the front end of conduit extend in protective sleeve through guide hole, and the rear end of conduit is interference fit and is sleeved in guide hole, and metal wedge is close to and is stuck on wedge shape union joint, catheter block intracavity be provided with cylindric and with the close-fitting batching pig of inwall in catheter block chamber, batching pig can slide before and after catheter block intracavity is done, the front end of batching pig is close-fitting taper for inserting in metal wedge and with metal wedge, be provided with front bayonet and rear through hole to after-opening and connection in the rear end of batching pig, the internal diameter of front bayonet is greater than the internal diameter of rear through hole, push rod is by the front dop being connected as a single entity, connecting rod, rear handle and handle composition, connecting rod in the middle of being positioned at connects together the rear handle of front taper of front end dop and rear end, before taper, the external diameter of dop is greater than the external diameter of connecting rod, being provided with kelly in the outside of rear handle is connected with handle, for promoting, push rod moves forward and backward handle, the rear handle of push rod is arranged in catheter block chamber, in the front bayonet of the front dop embedding batching pig of push rod, push rod and batching pig assembling are connected as a single entity, the kelly of push rod can snap in front limit bayonet socket and the rear spacing bayonet socket in catheter block chamber, to prevent that batching pig from retreating, be provided with in the centre of push rod and allow needle tubing pass and the push rod needle tubing hole coaxial with batching pig needle tubing hole, needle tubing assembles and is fixed in needle handle, and the antetheca of needle handle is assemblied in the end in catheter block chamber, and when use, the angle of hand-held needle handle scalable puncture vein punctures.
2. the venous detaining needle with malleation anti-backflow device according to claim 1, is characterized in that: the surface at handle is provided with anti-slip veins, is convenient to promote push rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420324457.3U CN203915654U (en) | 2014-06-18 | 2014-06-18 | A kind of venous detaining needle with malleation anti-backflow device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420324457.3U CN203915654U (en) | 2014-06-18 | 2014-06-18 | A kind of venous detaining needle with malleation anti-backflow device |
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| CN203915654U true CN203915654U (en) | 2014-11-05 |
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| CN201420324457.3U Active CN203915654U (en) | 2014-06-18 | 2014-06-18 | A kind of venous detaining needle with malleation anti-backflow device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104399145A (en) * | 2014-12-18 | 2015-03-11 | 邓杜娟 | Double-cavity-catheter self-sealing venous indwelling needle |
| CN104548262A (en) * | 2015-01-12 | 2015-04-29 | 江苏磐宇科技有限公司 | Shrapnel-type anti-acupuncture straight remaining needle production process |
| CN105251081A (en) * | 2015-11-18 | 2016-01-20 | 谢世庚 | Positive pressure cavity type remaining needle and method of preventing thrombi through positive pressure cavity type remaining needle |
| CN106310447A (en) * | 2016-08-23 | 2017-01-11 | 广东龙心医疗器械有限公司 | Indwelling needle |
| CN109045398A (en) * | 2018-09-27 | 2018-12-21 | 刘明源 | A kind of remaining needle and remaining needle assembly |
-
2014
- 2014-06-18 CN CN201420324457.3U patent/CN203915654U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104399145A (en) * | 2014-12-18 | 2015-03-11 | 邓杜娟 | Double-cavity-catheter self-sealing venous indwelling needle |
| CN104399145B (en) * | 2014-12-18 | 2016-11-23 | 邓杜娟 | A kind of double lumen tube self-sealing venous detaining needle |
| CN104548262A (en) * | 2015-01-12 | 2015-04-29 | 江苏磐宇科技有限公司 | Shrapnel-type anti-acupuncture straight remaining needle production process |
| CN105251081A (en) * | 2015-11-18 | 2016-01-20 | 谢世庚 | Positive pressure cavity type remaining needle and method of preventing thrombi through positive pressure cavity type remaining needle |
| CN106310447A (en) * | 2016-08-23 | 2017-01-11 | 广东龙心医疗器械有限公司 | Indwelling needle |
| CN106310447B (en) * | 2016-08-23 | 2022-11-29 | 广东龙心医疗器械有限公司 | Indwelling needle |
| CN109045398A (en) * | 2018-09-27 | 2018-12-21 | 刘明源 | A kind of remaining needle and remaining needle assembly |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |