CN102284104B - Safety vein puncture needle - Google Patents
Safety vein puncture needle Download PDFInfo
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- CN102284104B CN102284104B CN201110231682.3A CN201110231682A CN102284104B CN 102284104 B CN102284104 B CN 102284104B CN 201110231682 A CN201110231682 A CN 201110231682A CN 102284104 B CN102284104 B CN 102284104B
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- Prior art keywords
- needle
- shielded tube
- tube
- shielding sleeve
- leading portion
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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
- A61M39/22—Valves or arrangement of valves
- A61M39/28—Clamping means for squeezing flexible tubes, e.g. roller clamps
- A61M39/284—Lever clamps
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/15003—Source of blood for venous or arterial blood
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
- A61B5/150259—Improved gripping, e.g. with high friction pattern or projections on the housing surface or an ergonometric shape
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150389—Hollow piercing elements, e.g. canulas, needles, for piercing the skin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150503—Single-ended needles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/150633—Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/15074—Needle sets comprising wings, e.g. butterfly type, for ease of handling
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/153—Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/155—Devices specially adapted for continuous or multiple sampling, e.g. at predetermined intervals
-
- 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
-
- 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
Abstract
The invention relates to a safety vein puncture needle, which consists of a sheath, a needle tube, a needle base, a hose, a spring, a shielding sleeve and a disconnection cut-off clamp, wherein the needle tube is inserted and bonded at the front end of the needle base; the needle base is inserted into a longitudinal groove in an inner cavity of the front section of the shielding sleeve by a side wall ridge and is positioned, so that the direction of a cutting edge of a puncture needle tip is consistent with that of a handle; the shielding sleeve is sleeved outside the needle tube, the needle base and the hose; the spring can be compressed in space of the shielding sleeve and the front end of the needle base; the tail end of the shielding sleeve is bonded with the hose by high-frequency heat seal; the disconnection cut-off clamp is sleeved on the tail section of the shielding sleeve, and is inserted into an opening window of the shielding sleeve; and the wall of the lower section of the shielding sleeve is thickened to form a constricted pipe cavity, so that the side wall ridge at the front end of the needle base can be limited. When the puncture needle is used, a thin bridle of the shielding sleeve can be disconnected only by pinching the disconnection cut-off clamp, so that the shielding sleeve moves forwards under the acting force of the spring to cover the puncture needle completely, and the hose is closed by the cut-off clamp to the risk of needling harm, prevent bloodstain, liquid medicine and body fluid in the hose from overflowing and reduce the propagation of hematogenic diseases.
Description
(1) technical field
The present invention relates to a kind of medical apparatus and instruments, a kind of for to the interior collection of specimens of vein blood vessel (can be also the chamber for organizing), to the safety puncture needle of vein blood vessel infusion medicinal liquid, venous blood collection and venous transfusion process specifically.
(2) background technology
People, conventionally need to be by vein blood vessel is punctured in the time of disease preventing and treating, to material in vein blood vessel gather, analytical control obtains Human Physiology or pathological state; Also usually by vein blood vessel puncture, medicinal liquid is infused into vein blood vessel and arrives whole body, performance, compensation, substitute and therapeutical effect; In above check and therapeutic process, all need a kind of venipuncture needle, realize the damage that has of human vein blood vessel is got involved, thereby set up external to endovascular occasional passage.
In this process, venipuncture needle has (to vein blood vessel or organize chamber) fixed point gets involved and sets up the dual function of occasional passage, needs consummate technology, also exists certain dangerously, must under professional and technical personnel's control, carry out.
At present, the various venipuncture needles (transfusion needle, blood transfusion needle, blood taking needle, live tissue puncturing check pin, remaining needle etc.) that use both at home and abroad can both meet above-mentioned requirements, but also all exist wretched insufficiency and defect: current venipuncture needle both domestic and external, after using in above environment, venipuncture needle needle point is exposed outside; The needle point of contact patient blood, usually can cause needle stick injury to medical personnel and waste treatment personnel, causes infection and the propagation of blood borne disease.In addition, in clinical, common transfusion device and transfusion needle, extracting after venipuncture needle, needle point not only exposes, and, still can constantly leak owing to remaining in the ducted medicinal liquid of transfusion device, blood, body fluid etc., drop onto in environment, cause equally pollution or infection to environment and other crowds, cause the propagation of blood borne disease or other diseases.
In venipuncture utensil, engineers and technicians both domestic and external have done a large amount of work, the safe intravenous infusion needle of various ways has been researched and developed in design, is mostly to utilize machinery (spring) power or manual method that transfusion needle needle body (containing needle point) pull retraction is entered to the technical scheme in protective casing; Also can only realize protection and shielding to needle point, prevent the generation of needle stick injury, but all can not effectively transfusion (blood) pipeline effectively be ended, the excessive and trickling of anti-hemostasis (body, medicine) liquid, reduces pollution and infection to environment and human body.
At present, in the world, still without any a kind of technical scheme, can meet the demand of above-mentioned environment to venipuncture needle simultaneously.The requirement that prevents needle stick injury to be met, the requirement of the interior residual liquor of pipeline or the excessive trickling of body fluid will be prevented simultaneously.
We are at clinical common venipuncture needle, and its purposes has several lower several:
1, pen type blood collection: its structure is the needle tubing connecting, and there is sharp cutting edge at its two ends; In needle tubing, hypomere is fixed on needle stand, and front end is called that venipuncture needle, rear end are called collection blood pin, collection blood wire surface has blood resistance unit, needle tubing two ends to have protective casing.When use, blood taking needle rotation is fixed on to needle holder outer cylinder front end, implements venipuncture, after success, vacuum test tube is inserted to needle holder rear end cavity, make to collect blood pin rear end cutting edge through blood resistance unit and run through and thrust vacuum tube plug, under suction function, in blood suction blood taking tube; So repeatedly, can realize the collection of multitube time blood specimen; Take a blood sample complete, extract venipuncture needle, local hemostasis, to discarded blood taking needle, needs nurse again by blood taking needle front end sheath, is enclosed within again blood taking needle appearance, then rotates needle body, blood taking needle is taken off from needle holder, then blood taking needle is discarded in waste holder; In this operation, nurse's both hands overlap process again, and due to many reasons, nurse's finger is usually easily stabbed by needle point, and needle stick injury occurs, and causes infection or the propagation of blood borne disease, as hepatitis C, acquired immune deficiency syndrome (AIDS); Consequence is extremely serious.
2, vein blood taking needle: its structure is on the flexible pipe tail end needle stand of venoclysis needle, connects a collection blood pin and forms.It in use, also need the rotation of collection blood pin to be fixed on needle holder outer cylinder front end, hand-held venipuncture is implemented puncture for vein, after success, vacuum test tube is inserted to needle holder rear end cavity, make to collect blood pin cutting edge through blood resistance unit and thrust vacuum tube plug, under suction function, blood being sucked to blood taking tube.While needs, so repeatedly, can realize multitube blood sampling; Take a blood sample complete, extract venipuncture needle, local hemostasis, disposes discarded blood taking needle, needs nurse's hands to pinch collection blood pin needle stand appearance, then rotates needle body, and blood taking needle is taken off from needle holder, is discarded in waste holder together with venipuncture needle; In said process, because blood sampling flexible pipe is longer, approximately 20 centimetres, make the remaining blood in venipuncture needle and flexible pipe, in the process that blood taking needle and flexible pipe take off, blood can trickle everywhere, and contaminated environment or human body cause the transmission of disease may; At present, in clinical position, nurse and waste treatment personnel's finger is also very easy to be hindered by blood taking needle spine, infects blood borne disease because needle stick injury causes; Consequence is extremely serious.
Add up according to American National medical department: occur in injection puncture and account for 26% of needle stick injury incidence rate with the pricking wound of blood collection procedure; Federal Government was promulgated " safety of acupuncture and prevention " bill in 2000: require medical institutions to be necessary for employee safe medical apparatus is provided; The staff's of the contact blood source disease that U.S. National Institute Department of Health formulates operation standard, wherein requires: in injection, puncture procedure rules, firmly stop: hands takes off syringe needle, bending syringe needle, from broken needle head, the behavior of overlapping again needle guard.
3, venoclysis needle: the venoclysis needle of the clinical use of China, simple in structure, substantially do not possess safety guard (typical structure is shown in accompanying drawing 1), formed by needle tip shield, needle stand, venipuncture needle, flexible pipe; That medical personnel are by the main utensil of needle stick injury.According to China's medical statistics, scholarly journal report, clinical care practitioner up to more than 80%, is endangered extremely serious by the incidence rate of needle stick injury.
In sum, clinical in the urgent need to one above-mentioned in infusion medicinal liquid, blood transfusion, blood sampling, collection of body fluids process, can shield to puncture needle, effectively avoid needle stick injury; Simultaneously can be automatically to the above pipeline cut-off of puncture needle end, prevent blood, body fluid, liquor residue part in above environment excessive trickling, can eliminate the safe and reliable venipuncture needle utensil of blood borne disease infection risk.Just at present, both at home and abroad still without any being disclosed with the technical scheme of simple economy, practical safety.
(3) summary of the invention
The present invention be exactly for above-mentioned at vein, organize chamber to puncture, realize transfusion, blood transfusion, the existing deficiency of collect specimen process and the solution that proposes.Have safe, reliable, easy, practical, inexpensive, can simplify clinical manipulation program, increase work efficiency, eliminate needle stick injury, the feature of anti-Hemostatic Oral Liquid, the excessive trickling of body fluid; Specifically, it is a kind of safe venous puncture needle with needle tip shielding, liquid conduits stopper, can be used for the process of collection, infusion medicinal liquid, blood transfusion, tissue specimen collection and treatment to venous blood.
The present invention is achieved by the following scheme: a kind of safe venous puncture needle, is made up of sheath, puncture needle tubing, needle stand, flexible pipe, spring, shielded tube, closing clip; It is characterized in that: needle tubing peg graft cement in the medium pore of needle stand front end, needle stand back segment reduced and with flexible pipe grafting cementation; Shielded tube is enclosed within the appearance of spring, needle tubing, needle stand, flexible pipe, and in the space that spring-compressed is formed at shielded tube leading portion and needle stand front end; The end of shielded tube and flexible pipe are mutually sticky by high frequency heat seal
keep the compression to spring; Be sleeved on the end of shielded tube from disconnected closing clip, from inserting in the upper dropping window of shielded tube latter end from disconnected shear plate of disconnected closing clip; Respectively there is longitudinally prominent ridge of a semicircle needle stand leading portion both sides, and needle stand back segment is tapered to be dwindled and flexible pipe grafting cementation, and make the needle point cutting edge plane of needle tubing parallel with the line of two longitudinally prominent ridges.
Described shielded tube is hollow structure, and its front end perforate is dwindled, and opening diameter is a bit larger tham needle tubing external diameter; The leading portion inner diameter D 0 of shielded tube is a bit larger tham the external diameter of spring; The middle leading portion outside of shielded tube has the flat structure of a transverse projections at least, forms operating grip; The middle leading portion intracavity diameter D of shielded tube is slightly larger than the body diameter Z of needle stand leading portion; At the middle leading portion inner circle sidewall of shielded tube, there is a pair of semicircle longitudinal groove, its maximum spacing D1 is slightly larger than the spacing Z1 of two longitudinally prominent ridges of needle stand leading portion lateral wall, and the line of two longitudinal grooves and the plane parallel of operating grip; The posterior segment intracavity diameter D2 of shielded tube is a bit larger tham the spacing Z1 of the longitudinally prominent ridges in two of needle stand sides, and at the latter end of shielded tube, tube wall has two upper and lower corresponding being about described in 3mm horizontal to window, and the thin thin pipe wall of the both sides of windowing forms frenulum; Internal surface of sleeve pipe at the front place of windowing thickens, and makes this place's casing inner diameter be less than two distance Z1 that longitudinally dash forward between ridges of needle stand leading portion.
Described is made up of hard material or metal material from disconnected closing clip, its upper and lower plates structure that takes the shape of the letter U, there is a circular hole its lowest point, flexible pipe is through this circular hole, make it be sleeved on the end of shielded tube, upper front edge of board from disconnected closing clip has a pair of inserted link with stopper button, can insert in the wedged hole of lower front edge of board, forms self-locking non-return structure; To there being a pair of arc backing plate, form the closing clip to flexible pipe in the front center of upper and lower plates; In the outside of closing clip, the front end of upper and lower plates respectively has a pair of mutual intersection but close contact described from disconnected shear plate.
In clinical, when above-mentioned diagnosis, therapeutic process finish, medical personnel use finger firmly to pinch pressure closing clip, interact up and down from disconnected shear plate, are being in contact with one another seam place, small the frenulum residual place of windowing of shielded tube can be sheared rapidly from disconnected; Meanwhile, closing clip is closed up and down, by flexible pipe inner chamber closure, soft liquid in pipe is ended, and owing to having stopper button and wedged hole effect between upper and lower plates, makes above-mentioned action effect continue to keep.From the shielded tube of having no progeny, lose and the adhesion of flexible pipe, under spring-force driven dual, move forward rapidly, needle tip is covered to shielding, until the tail end narrowing portion of shielded tube and needle stand lateral process ridge interact and stop.Make shielded tube cover completely needle point and don't excessively reach come off.
When use, operate with conventional ways of venepuncture: take off front end sheath, row vein puncture, after success, implements the operations such as venoclysis medicinal liquid, venous blood collection, blood transfusion, biological fluid extracting and treatment.
In the time of above treatment or diagnosis end, firmly press from disconnected closing clip of the present invention, make from disconnected closing clip, the connection frenulum at the shielded tube place of windowing to be sheared from disconnected, by hose squeezing cut-off, tooth button inserted link and wedged hole effect, keep above action simultaneously, can realize flexible pipe cut-off sealing, because shielded tube is from the tractive that has broken, departed from flexible pipe, moved forward at acting force of the spring, puncture needle is shielded.Reach the effect of eliminating needle stick injury, anti-Hemostatic Oral Liquid, body fluid or overflow of drug fluid trickling, reduce or eliminate the propagation of blood borne disease, eliminate medical personnel by the danger of needle stick injury.
Install from the structure of disconnected closing clip because the present invention has adopted at venipuncture needle hose overcoat dress shielded tube, built-in spring and tail end, make the present invention there is following characteristics:
1, shielded tube is a flexible and transparent pipe, with handle one, is placed on flexible pipe appearance, and the part that can not affect venipuncture needle is fixed, and does not also increase patient's discomfort; What multiple safe vein pin at present both domestic and external adopted is all hard protective cover pipe, enter after local vascular at venipuncture needle, protective casing upwarps at needle handle afterbody, form an angle and be difficult to fix with body surface organization shape, venipuncture needle is had and had a strong impact on, its movement can involve the position of venipuncture needle in vein blood vessel, usually causes wearing out of blood vessel endothelium; Therefore, adopt at present the technical scheme of hard protective cover pipe to be not yet applied to venoclysis needle field both at home and abroad, only can be used in the process of of short duration puncture vein blood vessel, as vein blood taking needle;
2, the flexible and transparent shielded tube that the present invention adopts, by spring-compressed between needle stand and sleeve pipe, and with high frequency heat seal mode (or other bonding mode), by bonding to shielded tube and liquid hose, and using exterior from disconnected closing clip as Special safety sexual enlightenment, restriction, self-locking device.The present invention is had in cut-off flexible pipe inner liquid medicine, body fluid or blood flow, shielded tube can be moved forward, cover venipuncture needle completely.Can realize a step and complete the protection to venipuncture needle and the cut-off to soft liquid in pipe, can eliminate the generation of needle stick injury, avoid blood, medicinal liquid, the pollution of body fluid to medical personnel and environment, reduce transmission of disease;
3, because having adopted outside flexible pipe and shielded tube end, the present invention is set with from disconnected closing clip, should be from stopper button inserted link and the wedged hole structure of disconnected closing clip uniqueness, form symmetrical automatic closing structure, make after venipuncture (infusion medicinal liquid, blood transfusion, blood sampling, treatment) finishes, need only singlehandedly use thumb forefinger to press closing clip, can shear rapidly being connected from disconnected shielded tube frenulum and flexible pipe, remove the compression restriction of shielded tube to spring, spring is discharged, under resilient force, shielded tube reach, shields needle point; Meanwhile, closing clip is by closed hose squeezing cut-off, and above-mentioned action once completes, and can alleviate nurse's work, increases work efficiency.
(4) accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of common plain edition venipuncture needle;
Fig. 2 is point destructing schematic diagram of a kind of safe venous puncture needle of the present invention;
Fig. 3 is the structural representation of the needle stand of a kind of safe venous puncture needle of the present invention;
Fig. 4 is the structural representation of the shielded tube of a kind of safe venous puncture needle of the present invention;
Fig. 5 is the structure cutaway view from disconnected closing clip of a kind of safe venous puncture needle of the present invention;
Fig. 6 is the integral assembling structure schematic diagram of a kind of safe venous puncture needle of the present invention;
Fig. 7 be a kind of safe venous puncture needle of the present invention after use, start the overall structure schematic diagram after safety device.
(5) specific embodiment
Fig. 1 is traditional venoclysis needle, venipuncture needle A1 and needle stand cementation, and be connected with interface block A4 by means of the other end of flexible pipe A3, in use in (treatment such as venous blood collection, transfusion, blood transfusion, body fluid extraction) process, because the connecting hose of puncture needle is longer, approximately 20 centimetres, remaining blood (blood transfusion or blood collection procedure) in the venipuncture needle of front end and flexible pipe, medicinal liquid or body fluid (operative treatment process) can not be discharged from, in the time that said process finishes, blood, medicinal liquid and body fluid will trickle everywhere, contaminated environment or human body; Because vein needle point exposes, due to many reasons, nurse and waste treatment personnel's finger is also very easy to be stabbed by needle point, has needle stick injury risk; Consequence is extremely serious.
Fig. 2 is the overall structure decomposing schematic representation of a kind of safe venous puncture needle of the present invention, as seen from the figure, a kind of safe venous puncture needle of the present invention is made up of following part: sheath 0, needle tubing 1, needle stand 2, flexible pipe 3, spring 4, shielded tube 5, from disconnected closing clip 6.Sheath 0 is a transparent blind pipe, can peg graft with the front end of shielded tube 5; The front end of needle tubing 1 has sharp cutting edge 1a, forms venipuncture needle; Needle stand 2 is tubular structure, and leading portion appearance has a pair of longitudinally prominent ridge 2a, and front end has its aperture of perforate 2h coordinate and needle tubing 1 is cemented in hole with needle tubing 1 diameter; Flexible pipe 3 is a water white flexible duct, for carrying the passage of medicinal liquid, blood, body fluid, and its one end and needle stand 2 rear end grafting cementations, one end can be connected with infusion device in addition; Spring 4 is stage clips of being made up of stainless steel material, and its length is greater than the length of needle tubing 1; Shielded tube 5 is transparent hollow tube made from flexible material, and its front end oral area tube wall is reduced into 5a, and its opening diameter is equal to or greater than the external diameter of needle tubing 1; The leading portion outside of shielded tube 5 has an abduction fin at least, forms operating grip 5b, at the hypomere of shielded tube 5, has a pair of upper dropping window 5d, and the thin thin pipe wall of the both sides of windowing forms and connects frenulum 5e; From disconnected closing clip 6 be a shearing with self-locking check function from disconnected closing clip, it can be that hard material or metal material are made.
Fig. 3 is needle stand 2 structural representations of a kind of safe venous puncture needle of the present invention.Referring to Fig. 3-1. with Fig. 3-2., needle stand 2 is cylindric, its external diameter is Z, and there is a through hole 2b its front end center, and its aperture is equal to or greater than the external diameter of needle tubing 1, and the outer surface of needle stand 2 leading portions has a pair of longitudinally prominent ridge 2a, and its spacing is Z1; The horizontal direction consistent with needle tube edge direction (in conjunction with Fig. 2) of two prominent ridge lines; Needle stand 2 back segment reduced diameter, with flexible pipe grafting cementation (in conjunction with Fig. 2).
Fig. 4 is the structural representation of the shielded tube 5 of a kind of safe venous puncture needle of the present invention.Referring to Fig. 4-1., Fig. 4-2. known, shielded tube 5 is hollow pipes made from flexible clear materials, and its front end perforate tube wall is reduced into 5a, and its opening diameter is greater than the external diameter of needle tubing 1; The leading portion inner diameter D 0 of shielded tube 5 is a bit larger tham the external diameter of spring 4; The middle leading portion both sides of shielded tube 5 have an abduction fin at least, become operating grip 5b; Be slightly larger than the body diameter Z of needle stand 2 leading portions at the middle leading portion intracavity diameter D of shielded tube 5; At the middle leading portion inner circle sidewall of shielded tube 5, there is a pair of semicircle longitudinal groove 5c, its maximum spacing D1 is slightly larger than the spacing Z1 of two longitudinally prominent ridge 2a of needle stand 2 leading portion lateral walls, and the plane parallel of the line of two longitudinal groove 5c and flat handle 5c; The posterior segment intracavity diameter D2 of shielded tube 5 is a bit larger tham the spacing Z1 of two the longitudinally prominent ridge 2a in needle stand 2 side, and at the latter end of shielded tube 5, tube wall has two upper and lower corresponding 5d that laterally window that are about 3mm, and the thin thin pipe wall of the 5d both sides of windowing forms frenulum 5e; Internal surface of sleeve pipe in the 5d front of windowing thickens, and makes the casing inner diameter 5f of this place be less than two distance Z1 that longitudinally dash forward between ridge 2a of needle stand 2 leading portions.(in conjunction with Fig. 2).
Fig. 5 is the structural representation from disconnected closing clip 6 of a kind of safe venous puncture needle of the present invention: be made up of hard material or metal material from disconnected closing clip 6, be U-shaped structure between its upper and lower plates, have a circular hole in its lowest point; The plate outer rim direction corresponding with lower plate has a pair of inserted link 6a with stopper button thereon, can be inserted in wedged hole 6b corresponding in lower plate, forms self-locking non-return structure; Respectively have an arc backing plate 6c in the front end correspondence of upper and lower plates, along with the closure of upper and lower plates is drawn close, two arc backing plate 6c can form and press from both sides the closing clip (in conjunction with Fig. 6) that closes flexible pipe 3; The upper and lower plates front end in the outside of closing clip respectively have a pair of mutual intersection but can close contact from disconnected shear 6d and 6d` two cut-off knives of plate shearing machine or shears (they be similar to).
Fig. 6 is the overall structure schematic diagram of a kind of safe venous puncture needle of the present invention; As seen from the figure: puncture needle tubing 1 is bonded in needle stand 2 front end endoporus, and cutting edge end is venipuncture needle point 1a; Peg graft and adhere to one end of flexible pipe 3 in the rear end of needle stand 2; Spring 4 is enclosed within puncture needle appearance, and shielded tube 5 is enclosed within the appearance of spring 4, needle tubing 1, needle stand 2 and flexible pipe 3, and spring 4 is compressed in the space that the front end of shielded tube 5 endoporus and needle stand 2 front ends and needle tubing 1 form; The end of shielded tube 5 and flexible pipe 3 surfaces bond (also can bond by other means) by high frequency heat seal, to keep the compression to spring 4; Sheath 0 covers the front end of shielded tube 5, and to needle tip, 1a protects; The prominent ridge 2a in two of sides of (in conjunction with Fig. 3, Fig. 4) needle stand 2 leading portions is inserted in the longitudinal groove 5c of the front stage casing of shielded tube 5 inner chamber, and needle point cutting edge 1a direction is realized to horizontal location.The end that is sleeved on shielded tube 5 from disconnected closing clip 6, closing clip is fastened in the upper dropping window 5d of shielded tube 5 back segments.Flexible pipe 3 and housing
5 is all the transparent pipeline that flexible material is made, can be bending, be convenient to clinical manipulation, and can not affect venipuncture needle endovascular fixing.
More than form the overall structure of a kind of safe venous puncture needle of the present invention.
Fig. 7 be a kind of safe venous puncture needle of the present invention after clinical use, puncture needle body structure is ruined type, needle tubing 1 conductively-closed sleeve pipe 5 covers completely, is protected completely; It is completely closed that flexible pipe 3 is cut off folder, residual liquid, blood or body fluid can not excessively be trickled, the structural representation being effectively controlled.As seen from the figure, when in the time that clinical use (blood transfusion, infusion medicinal liquid, blood sampling, collection of body fluids specimen, puncture for treating) finishes, pinch and press from disconnected closing clip 6 with finger, make its upper and lower plates closure that comes closer, the thin thin pipe wall frenulum 5e of both sides, 5d place of shielded tube 5 can being windowed is sheared from disconnected shear 6d and 6d` from disconnected, the inner chamber extruding closure of flexible pipe 3 is caused to cut-off simultaneously.Because shielded tube 5 has lost involving of flexible pipe 3, under spring 4 active forces, reach, covers needle tip 1a completely rapidly, until longitudinally the dashing forward the mutual stop limits of ridge 2a of the narrowing portion 5f of shielded tube 5 back segment inwalls and needle stand 2 front end lateral walls and stopping; Make shielded tube 5 cover completely needle point 1a and don't excessively reach come off.So can eliminate medical personnel by the risk of needle stick injury.(in conjunction with Fig. 5 and Fig. 6), owing to having stopper button 6c and wedged hole 6c` effect between upper and lower plates, the cut-off effect that makes above-mentioned flexible pipe 3 inner chambers be cut off folder closed action continues to keep, flexible pipe inner liquid medicine, blood or body fluid can not excessively be trickled, eliminate the chance of the excessive pollution of pathogen and propagation, reduced generation and the propagation of blood borne disease.
Technical scheme described in the invention, any similar distortion that can realize by distortion at those skilled in the art, all will fall into technology category of the present invention.
Claims (3)
1. a safe venous puncture needle, by sheath (0), needle tubing (1), needle stand (2), flexible pipe (3), spring (4), shielded tube (5), form from disconnected closing clip (6); It is characterized in that: needle tubing (1) peg graft cement in the medium pore (2b) of needle stand (2) front end, needle stand (2) back segment reduced and with flexible pipe (3) grafting cementation; Shielded tube (5) is enclosed within the appearance of spring (4), needle tubing (1), needle stand (2), flexible pipe (3), and spring (4) is compressed in the space of shielded tube (5) leading portion and the formation of needle stand front end; The end of shielded tube (5) and flexible pipe (3) bond mutually by high frequency heat seal, keep the compression to spring (4); Be sleeved on the end of shielded tube from disconnected closing clip (6), from inserting in the upper dropping window (5d) of shielded tube (5) latter end from disconnected shear plate (6d, 6d ') of disconnected closing clip; Respectively there is longitudinally prominent ridge (2a) of a semicircle needle stand (2) leading portion both sides, and make needle point cutting edge (1a) plane of needle tubing parallel with the line of two longitudinally prominent ridges (2a).
2. according to the said a kind of safe venous puncture needle of claim 1, it is characterized in that: shielded tube (5) is hollow structure, and its front end perforate (5a) is dwindled, and opening diameter is a bit larger tham needle tubing (1) external diameter; The leading portion inner diameter D 0 of shielded tube (5) is a bit larger tham the external diameter of spring (4); The middle leading portion outside of shielded tube (5) has the flat structure of a transverse projections at least, forms operating grip (5b); The middle leading portion intracavity diameter D of shielded tube (5) is slightly larger than the body diameter Z of needle stand (2) leading portion; At the middle leading portion inner circle sidewall of shielded tube (5), there is a pair of semicircle longitudinal groove (5c), its maximum spacing D1 is slightly larger than the spacing Z1 of two longitudinally prominent ridges (2a) of needle stand (2) leading portion lateral wall, and the plane parallel of the line of two longitudinal grooves (5c) and operating grip (5b); The posterior segment intracavity diameter D2 of shielded tube (5) is a bit larger tham the spacing Z1 of two the longitudinally prominent ridges (2a) in needle stand (2) side, at the latter end of shielded tube (5), tube wall has two upper and lower corresponding being about described in 3mm horizontal to window (5d), and the thin thin pipe wall of (5d) both sides of windowing forms frenulum (5e); Internal surface of sleeve pipe at (5d) the front place of windowing thickens, and makes this place's casing inner diameter (5f) be less than the spacing Z1 of two longitudinally prominent ridges (2a) of needle stand (2) leading portion.
3. according to the said a kind of safe venous puncture needle of claim 1, it is characterized in that: made by hard material or metal material from disconnected closing clip (6), its upper and lower plates structure that takes the shape of the letter U, there is a circular hole its lowest point, flexible pipe (3) is through this circular hole, make it be sleeved on the end of shielded tube (5), upper front edge of board from disconnected closing clip (6) has a pair of inserted link with stopper button (6a), can insert in the wedged hole (6b) of lower front edge of board, form self-locking non-return structure; To there being a pair of arc backing plate (6c), form the closing clip to flexible pipe (3) in the front center of upper and lower plates; In the outside of closing clip, the front end of upper and lower plates respectively has a pair of mutual intersection but close contact described from disconnected shear plate (6d, 6d ').
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110231682.3A CN102284104B (en) | 2011-08-12 | 2011-08-12 | Safety vein puncture needle |
| PCT/CN2012/001072 WO2013023435A1 (en) | 2011-08-12 | 2012-08-13 | Secure vein puncture needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110231682.3A CN102284104B (en) | 2011-08-12 | 2011-08-12 | Safety vein puncture needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102284104A CN102284104A (en) | 2011-12-21 |
| CN102284104B true CN102284104B (en) | 2014-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110231682.3A Expired - Fee Related CN102284104B (en) | 2011-08-12 | 2011-08-12 | Safety vein puncture needle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102284104B (en) |
| WO (1) | WO2013023435A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102284104B (en) * | 2011-08-12 | 2014-06-04 | 张亚平 | Safety vein puncture needle |
| CN102783953B (en) * | 2012-08-17 | 2015-07-29 | 张亚平 | A kind of Novel pen type safe blood-taking needle |
| CN102940498B (en) * | 2012-10-18 | 2015-06-24 | 青岛大学医学院附属医院 | Venous blood collection needle with cut-off protectors |
| CN103127580B (en) * | 2013-03-14 | 2014-11-05 | 苏州大学 | Singlehanded safety indwelling needle |
| US10004533B2 (en) | 2014-09-30 | 2018-06-26 | Fateh Entabi | Surgical tools and system for safely accessing body cavities and methods of using the same |
| CN107185079A (en) * | 2017-06-22 | 2017-09-22 | 苏州卡睿知光电科技有限公司 | A kind of butterfly needle with protective case |
| CN107185080A (en) * | 2017-06-22 | 2017-09-22 | 苏州卡睿知光电科技有限公司 | A kind of butterfly needle |
| CN108815631A (en) * | 2018-07-05 | 2018-11-16 | 南通市中医院 | A kind of venipuncture needle and its protective device |
| CN109567828B (en) * | 2019-01-30 | 2023-09-19 | 天津哈娜好医材有限公司 | Needleless blood collection needle and use method thereof |
| CN110720932B (en) * | 2019-10-31 | 2022-11-01 | 华兰生物巫溪县单采血浆有限公司 | Be provided with multi-needle structure's piercing depth for blood test |
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| US5746215A (en) * | 1996-11-01 | 1998-05-05 | U.S. Medical Instruments, Inc. | IV infusion or collection device with extendable and retractable needle |
| US5779679A (en) * | 1997-04-18 | 1998-07-14 | Shaw; Thomas J. | Winged IV set with retractable needle |
| CN202173450U (en) * | 2011-08-12 | 2012-03-28 | 张亚平 | Safe venous puncture needle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4464540B2 (en) * | 2000-07-18 | 2010-05-19 | テルモ株式会社 | Puncture tool |
| US7294118B2 (en) * | 2001-10-24 | 2007-11-13 | Becton, Dickinson And Company | Retractable needle assembly |
| CA2422472A1 (en) * | 2002-03-19 | 2003-09-19 | Volker Niermann | Needle assembly |
| WO2006123645A1 (en) * | 2005-05-19 | 2006-11-23 | Nipro Corporation | Wing-like needle assembly |
| US20110125057A1 (en) * | 2006-09-28 | 2011-05-26 | Allan Walsh | Intravenous cannula assembly |
| US7914501B2 (en) * | 2007-01-05 | 2011-03-29 | Nipro Corporation | Indwelling needle |
| CN101239209A (en) * | 2008-03-17 | 2008-08-13 | 张亚根 | Disposable safety vein puncture needle |
| US8439870B2 (en) * | 2008-09-10 | 2013-05-14 | B. Braun Medical Inc. | Safety needle assembly and methods |
| CN102284104B (en) * | 2011-08-12 | 2014-06-04 | 张亚平 | Safety vein puncture needle |
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2011
- 2011-08-12 CN CN201110231682.3A patent/CN102284104B/en not_active Expired - Fee Related
-
2012
- 2012-08-13 WO PCT/CN2012/001072 patent/WO2013023435A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5746215A (en) * | 1996-11-01 | 1998-05-05 | U.S. Medical Instruments, Inc. | IV infusion or collection device with extendable and retractable needle |
| US5779679A (en) * | 1997-04-18 | 1998-07-14 | Shaw; Thomas J. | Winged IV set with retractable needle |
| CN202173450U (en) * | 2011-08-12 | 2012-03-28 | 张亚平 | Safe venous puncture needle |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013023435A1 (en) | 2013-02-21 |
| CN102284104A (en) | 2011-12-21 |
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