CN102038510A - Novel pen type safety blood taking needle - Google Patents
Novel pen type safety blood taking needle Download PDFInfo
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- CN102038510A CN102038510A CN2010106226855A CN201010622685A CN102038510A CN 102038510 A CN102038510 A CN 102038510A CN 2010106226855 A CN2010106226855 A CN 2010106226855A CN 201010622685 A CN201010622685 A CN 201010622685A CN 102038510 A CN102038510 A CN 102038510A
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Abstract
The invention discloses a novel pen type safety blood taking needle, which comprises a jacket, an outer cylinder, a needle seat, a key, a needle tube, a spring and a blood blocking sleeve. The front end of the outer cylinder is provided with a conical head; an inner hole of the conical head is communicated with the inner cavity of the outer cylinder; the lower section of the conical head is square; and symmetric notches are arranged on the base part. The lower section of the needle seat is provided with a spring support platform of which the surface is provided with a column table with round inside and square outside; the middle section of the column table is provided with symmetric notches corresponding to the notches of the conical head; the middle section of a lock sheet is provided with a square hole, and a slit is arranged on the lower edge of the hole; the width of the slit is equal to the outer diameter of the spring; the lock sheets are mounted in the notches of the conical head of the outer cylinder and inserted into the notches of the column table of the needle seat through the narrow slit so as to lock at the front end of the outer cylinder; the spring is also compressed in the inner hole of the conical head; and a support sheet is arranged below the key, and protruding protection is available peripherally. After blood taking is finished, the key is pressed to remove restriction on the notches of the column table of the needle seat and release the needle seat; and the spring is reset to drive the needle tube to retract into the inner cavity of the outer cylinder. The blood taking needle disclosed by the invention is simple in structure and convenient to use, safe, reliable and destroyed after used once; and moreover, the needle point is automatically taken back to protect medical care personnel and avoid needling injury.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, a kind of specifically novel pen type safety blood taking pin with needle holder, it cooperates with vacuum test tube, is used for the gatherer process of venous blood specimen.
Background technology
People have following three kinds of approach usually to the collection of blood preparation: (1) subcutaneous blood sampling: be used for the simple and easy differential counting of blood constituent is detected more; Subcutaneous (real core or the prismatic needle point) blood taking needles that use more; (2), venous blood collection: be used for the collection of specimens that blood cell is learned, nosetiology, immunology and other related discipline indexs are carried out detailed detection in the blood, in clinical application very wide, use pen type or split type vein (hollow) blood taking needle more; (3), arterial blood drawing, how in critical emergency case, aterial blood gas indexes following is detected, use lessly, use arterial blood drawing syringe (band pin) to gather more.Collection and check to blood preparation, its objective is by detection bacteriology, virological infection level in analyzing and testing, acquisition blood blood component and the blood of blood constituent, to understand Human Physiology and pathologic condition, or the understanding medication effect, and to advancing of disease, lapse to and judgement etc. is made in prognosis.
In venous blood collection, various countries clinical medical and nursing personnel, most pen type blood taking needle or split type vein blood taking needles of using; The present invention only relates to the puncture blood collecting utensil in the venous blood gatherer process.
The pen type blood taking needle: its structure is the needle tubing that connects, and all there is sharp cutting edge at its two ends; Hypomere is fixed on the needle stand in the needle tubing, 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 that protective casing is arranged.During use, the blood taking needle rotation is fixed on the needle holder outer cylinder front end, implements venipuncture, after the success, vacuum test tube is inserted needle holder rear end cavity, make collection blood pin rear end cutting edge pass blood resistance unit and run through and thrust the vacuum tube plug, under suction function, in blood suction blood taking tube; So repeatedly, can realize the collection of multitube time blood specimen; Blood sampling finishes, and extracts venipuncture needle, and local hemostasis to depleted blood taking needle, needs the nurse once more with blood taking needle front end sheath, is enclosed within the blood taking needle appearance again, rotates needle body then, and blood taking needle is taken off from needle holder, blood taking needle is discarded in the waste holder again; Nurse's both hands overlap process again in this operation, and owing to multiple reason, nurse's finger is usually easily stabbed by needle point, and needle stick injury takes place, and causes the infection or the propagation of blood borne disease, as hepatitis C, acquired immune deficiency syndrome (AIDS); Consequence is extremely serious.
Split type vein blood taking needle: its structure is on the flexible pipe tail end needle stand of venoclysis needle, connects a collection blood pin and constitutes.It in use, also need the rotation of collection blood pin is fixed on the needle holder outer cylinder front end, hand-held venipuncture is implemented puncture at vein, after the success, vacuum test tube is inserted needle holder rear end cavity, make collection blood pin cutting edge pass blood resistance unit and thrust the vacuum tube plug, under suction function, blood is sucked blood taking tube.When needing, so repeatedly, can realize the multitube blood sampling; Blood sampling finishes, and extracts venipuncture needle, and local hemostasis is disposed depleted blood taking needle, needs nurse's hands to pinch collection blood pin needle stand appearance, rotates needle body then, and blood taking needle is taken off from needle holder, is discarded in the waste holder together with venipuncture needle; In the said process, because the blood sampling flexible pipe is longer, about 20 centimetres, make the remaining blood in venipuncture needle and the 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 also is very easy to be hindered by the blood taking needle spine, infects blood borne disease because of needle stick injury causes; Consequence is extremely serious.
Add up according to the American National medical department: the pricking wound that occurs in injection puncture and blood collection procedure accounts for 26% of needle stick injury incidence rate; Federal Government was issued " safety of acupuncture and prevention " bill in 2000: require medical institutions to be necessary for the 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 the broken needle head, overlap the behavior of needle guard again.
China is because economy and historical reasons are to use the syringe puncture to gather and use the mode of above two kinds of blood taking needles collection venous blood more than clinical blood sampling is operated.According to China's medical statistics, scholarly journal report, the clinical care practitioner by the incidence rate of needle stick injury up to more than 80%.Endanger extremely serious.
In sum, clinically press for a kind ofly in above-mentioned blood collection procedure, can effectively avoid needle stick injury, eliminate the safe and reliable blood taking needle utensil of blood borne disease infection risk.Just at present, domestic neither one still can be disclosed with the technical scheme of simple economy, practical safety.
Summary of the invention
The present invention is exactly the solution that proposes at the existing deficiency of above-mentioned venous blood collection process.Have safe, reliable, easy, practical, inexpensive, can simplify the clinical manipulation program, increase work efficiency, eliminate the characteristics of needle stick injury; Specifically, it is a kind of safety pen type blood taking needle with needle holder, is used for the gatherer process of vacuum test tube to venous blood.
The present invention is achieved by the following scheme: a kind of novel pen type safety blood taking pin, form by needle tubing, spring, needle stand, blood resistance unit, button, urceolus, sheath; It is characterized in that: porose, the interior bonding needle tubing of needle stand central authorities, the needle stand hypomere has the spring support platform, its outer pocketed springs; The outer rim symmetry of spring support platform has three arcuated fin pieces of abduction downwards, and its fin maximum gauge is equal to or slightly less than the internal diameter of urceolus; The surface of spring support platform, the needle stand periphery have one vertical in the outer quadrate pylon of circle, pylon is slightly larger than the spring external diameter with the concentric symmetry in needle stand axle center, its interior Circularhole diameter, its foreign side's length of side is slightly less than the interior square hole length of side of urceolus conehead hypomere; Two symmetric levels flutings are arranged in the stage casing of pylon, make that week communicates with outer wall in the pylon, the spacing that two levels are slotted is greater than the external diameter of spring, but is slightly less than the narrow width that cracks of button lock banking stop hypomere.
The front end of urceolus has conehead, and the conehead endoporus communicates with outer tube inner chamber, and the conehead endoporus dwindles in the port, forms a constriction step, and the epimere of conehead inner chamber is a circular hole, and the aperture is slightly larger than the spring external diameter; The conehead endoporus becomes square in hypomere expansion, the square pylon on the needle stand spring support platform can be held cooperation; With conehead under the front wall surfaces of urceolus of end in contact, and be that the conehead lower end parallel with overcoat handle major axis has two symmetric flutings (can with the cutting of conehead basilar part outer wall), make endoporus and exterior; The spacings of two flutings are slightly less than the narrow width that cracks of hypomere of button lock banking stop, but greater than the external diameter of spring.The urceolus lower end crimping formation handle that turns up, urceolus hypomere inwall have the prominent ridge of an annular.
In the urceolus front wall surfaces three projections are arranged, two both sides that are symmetrically distributed in the urceolus antetheca of the axis direction parallel wherein with urceolus handle major axis, and be to extend to the right with the axle center, distance equals the width of lock banking stop between two projections; Another piece projection, be positioned at urceolus handle long axis on parallel urceolus front wall surfaces, outside the conehead periphery begins left, extend.They carry out spacing to lock banking stop.
In the sidewall surfaces that intersects with the vertical urceolus antetheca of handle long axis and upper end sidewall, a semi-ring (Horse hoof) the shape ridge of dash forward is arranged, the outer tube wall of semi-circular prominent ridge inboard lacks; Antetheca at the urceolus of corresponding site extends upward, and to 3/5ths five radius, this extension is crooked to the urceolus below, less than 90 °, forms the resiliency supported sheet that duck tongue shaped is upturned, and the prominent ridge of its profile and the shape of a hoof matches, but less than the shape of a hoof ridge inner edge of dashing forward.At the hypomere inwall of urceolus, the prominent ridge of an annular is arranged, it arrives the length of the distance at handle edge greater than blood resistance unit, and the internal radius of its formation is less than the diameter of needle stand hypomere abduction fin.
Button is the L shape, and lengthy motion picture is a lock banking stop, and wherein hypomere has a square perforate, and the length of side in hole is slightly larger than the length of side of the square pylon of needle stand; The curved expansion in square hole upper edge, the arc radius equals the radius of conehead hypomere periphery, and there is narrow cracking of running through the lower edge of square hole, and the width of this seam is enough to make spring to pass through (be not less than or equal spring external diameter), but less than the length of side of pylon on the needle stand.It is barb-like that the outer rim of lock banking stop hypomere is wedge shape; The short-movie of button is the trigger button key, and there is the round button of projection slightly in button key surface central authorities, and the width of the lock banking stop of button is slightly less than the spacing of two parallel projections of urceolus front wall surfaces.
Lock banking stop is installed in the fluting of conehead lower end, and spacing fixing by three projections, in the fluting of the narrow insertion conehead lower end, place of cracking of lock banking stop and the fluting of needle stand pylon, the spring compression is fixed in the conehead inner chamber of outer cylinder front end.The edge, lower ending opening place of needle stand turns up and expands, and can be connected with blood resistance unit is nested; Needle tubing runs through needle stand goes forward side by side into blood resistance unit, uses binding agent, bonding firmly tube wall and needle stand.
Above structure has been formed a kind of novel pen type safety blood taking pin of the present invention.
During use, operate: take off the front end sheath, the row vein puncture with conventional venous blood acquisition method, after the success, vacuum test tube is inserted needle holder rear end cavity, make collection blood pin cutting edge pass blood resistance unit and thrust the vacuum tube plug, under suction function, with blood suction blood taking tube.
When blood sampling finishes, urceolus (containing blood taking needle) is taken off, the vein local hemostasis.Method of disposal to the blood taking needle after using is: external, one hand-held blood taking needle holder urceolus, this hands thumb press triggers the sheet button key, make it to move down, the place of cracking of the lock banking stop of button can be lost restriction, when the square hole for the treatment of lock banking stop overlaps with the pylon of needle stand, can make needle stand pass square hole and free needle stand pylon fluting, the compression spring is released, and puncture needle, needle stand, blood resistance unit together can be recovered in the urceolus.Because the abduction fin of needle stand lower end can be made in the blood taking needle retraction process by the prominent ridge restriction of the annular of urceolus hypomere, collection blood pin is limited in the urceolus, must not expose.The puncture needle of blood taking needle epimere enters the urceolus space and no longer exposes under spring action.Eliminate medical personnel by the danger of needle stick injury.
Because the present invention has adopted needle holder and the incorporate structure of blood taking needle to make the present invention in use, no longer need the nurse in rule of operation, blood taking needle to be connected with the needle holder urceolus to screw installation, unscrew the process of taking off, reduce operation link, eliminated the risk of needle stick injury.
Because type of the present invention has adopted pocketed springs outside needle stand, and button is inlaid in the conehead root, utilize its square opening and constriction slit with the symmetrical grooving locking in the square pylon stage casing on the needle stand spring support platform and the control of release, form the structure of mutual locking, make after blood sampling finishes, need only singlehandedly use thumb press trigger button key, can remove locking restriction rapidly to the pylon on the needle stand, the spring of needle stand and periphery thereof is discharged, under resilient force, needle stand drives the rapid retraction of blood taking needle and enters the needle holder urceolus; Simultaneously, needle stand lower end abduction fin is spacing by the prominent ridge of the annular of urceolus hypomere, and blood taking needle needle tubing and collection blood pin and needle stand, spring all are shielded in the space of urceolus.Have disposable use, ruin automatically after the use type, syringe needle automatically retraction enter in the urceolus and conductively-closed, eliminate medical personnel by the generation of needle stick injury.Also can alleviate nurse's work, increase work efficiency.
Description of drawings
Accompanying drawing 1 is the overall structure decomposing schematic representation of a kind of novel pen type safety blood taking pin of the present invention;
Accompanying drawing 2 is needle stand structural representations of a kind of novel pen type safety blood taking pin of the present invention;
Accompanying drawing 3 is press-key structure sketch maps of a kind of novel pen type safety blood taking pin of the present invention;
Accompanying drawing the 4, the 5th, a kind of novel pen type safety blood taking pin outer tube structure sketch map of the present invention;
Accompanying drawing 6 is self-contained structure cutaway views of a kind of novel pen type safety blood taking pin of the present invention;
Accompanying drawing 7 is that a kind of novel pen type safety blood taking pin of the present invention uses the back needle tip retracts to enter the state cutaway view of outer tube inner chamber.
The specific embodiment
Accompanying drawing 1 is the overall structure decomposing schematic representation of a kind of novel pen type safety blood taking pin of the present invention, as seen from the figure, a kind of novel pen type safety blood taking pin of the present invention is made up of several lower parts: needle tubing 1, spring 2, needle stand 3, blood resistance unit 4, urceolus 5, button 6, sheath 7.The front end of needle tubing 1 has sharp cutting edge 1a, is venipuncture needle, and also there is sharp cutting edge 1b the rear end, is collection blood pin 1b; Blood resistance unit 4 is the blind pipe of a hollow, and its front end oral area tube wall thickens and is 4a; Spring is that stainless steel material is made,, it is a length L, external diameter is T.Urceolus 5 is a hollow pipe, the handle 5e that the front end center has conehead, lower end to have crimping to form, and front end side wall has the prominent ridge 5g of annular; Sheath 7 is the hollow blind pipe.
Accompanying drawing 2 is needle stand structural representations of a kind of novel pen type safety blood taking pin of the present invention.The front end of needle stand 3 center has a through hole 3a, the middle hypomere of needle stand that one spring support platform 3d is arranged, and the edge of needle stand lower end perforate is to turn up and expands 3f; In the outer rim of support platform 3d the arcuated fin piece 3e of symmetric three downward abductions is arranged, maximum gauge equals urceolus 5 internal diameters between its span; On the surface of spring support platform 3d, the needle stand periphery have one with the outer quadrate vertical pylon 3b of circle in axle is concentric, its circle internal diameter is slightly larger than spring external diameter T, its foreign side's length of side is slightly less than the length of side of urceolus conehead endoporus hypomere square hole; A pair of symmetric fluting 3c is arranged in the stage casing of pylon 3b, and its fluting highly is slightly larger than the thickness of button lock banking stop, and the distance between two grooves equals spring external diameter T; Fluting 3c makes pylon 3b inner chamber communicate with the external world.
Accompanying drawing 3 is structural representations of the locking button 6 of a kind of novel pen type safety blood taking pin of the present invention.By accompanying drawing 3 as can be known, button 6 is tabs of a L type structure, and its lengthy motion picture is a lock banking stop, and wherein there is square opening 6b the hypomere center, and this hole length of side is slightly larger than the length of side of needle stand pylon 3b; The lower edge of square hole 6b has one to run through the 6c that cracks, and its width Q that cracks is less than the needle stand pylon 3b length of side, but equals or be slightly larger than spring external diameter T, the curved expansion in square hole upper edge, and the arc radius equals the radius of conehead hypomere periphery; The hypomere outer rim of lock banking stop has the wedge shape barb 6d of abduction, and the distance between the wedge shape barb is greater than the distance between the two projection 5b1 of urceolus front wall surfaces; The short-movie of button 6 is that trigger button is strong, and its appearance has a circular projection 6a, touches the location sense to increase hands, is convenient to accurate operation.
Accompanying drawing the 4, the 5th, the outer tube structure sketch map of a kind of novel pen type safety blood taking pin of the present invention: urceolus 5 rounded tubular structures, its inner hollow, the outside crimping of urceolus 5 lower edge forms the handle 5e that shakes hands, there is circular conehead the urceolus upper end, the porose 5a of conehead front end central authorities, and the hole communicates with outer tube inner chamber, the aperture dwindles in the upper end and forms the constriction step, the expansion of conehead hypomere endoporus becomes square, and its length of side is slightly larger than the length of side of needle stand pylon 3b, and its square hole height is slightly larger than the height of pylon 3b on the needle stand; There is a pair of symmetric fluting 5c the conehead lower end that contacts with urceolus 5 antethecas; Distance R between two flutings is slightly larger than spring external diameter T, and less than the crack width Q of 6c of lock banking stop constriction, its fluting highly is slightly larger than the thickness of button lock banking stop; Fluting 5c makes the conehead inner chamber communicate with the external world.
See accompanying drawing 4, accompanying drawing 5-1., the 2. A section of conehead of accompanying drawing 5-, on conehead and urceolus 5 antethecas that urceolus 5 basilar parts are connected, three projections are arranged, wherein 5b1 is parallel two, be symmetrically distributed in the both sides of the urceolus antetheca axis parallel with urceolus 5 handle 5e major axis, and be to extend to the right with the axle center, its spacing is from the width that equals lock banking stop; 5b2 is one, is positioned at the surface of the urceolus antetheca parallel with urceolus 5 handle 5e long axis, extends outside the conehead periphery begins left.They carry out spacing to lock banking stop 6.
See accompanying drawing 4, accompanying drawing 5-1., accompanying drawing 5-section 2., with the upper end side wall surface of vertical urceolus antetheca of handle major axis and urceolus, a semi-ring (Horse hoof) the shape ridge 5g that dashes forward is arranged.The outer tube side wall disappearance of semi-circular prominent ridge inboard; Urceolus antetheca at corresponding site extends upward, and is crooked to the urceolus below to 3/5ths five radius, less than 90 °, forms the resiliency supported sheet 5f that duck tongue shaped is upturned, and the prominent ridge of its profile and the shape of a hoof matches, less than the prominent ridge of the shape of a hoof.At the hypomere inwall of urceolus 5, the prominent ridge 5d of an annular is arranged, the prominent ridge 5d of annular is to the distance Y of the handle edge 5e length greater than blood resistance unit 4, and the internal radius of its formation is less than the diameter of needle stand hypomere abduction fin 3e.
Accompanying drawing 6 is overall structure sketch maps of a kind of novel pen type safety blood taking pin of the present invention; As seen from the figure: puncture needle tubing 1 is bonded in the needle stand 3, epimere is long slightly, be venipuncture needle 1a, it is short slightly that the hypomere of needle tubing exposes the part of needle stand, be collection blood pin 1b, the two length differs about 2 times, and the annular brace platform 3d of hypomere goes up bearing spring 2 in the needle stand 3, the 3b of the portion of expanding of needle stand lower end and blood resistance unit 4 end 4a sockets, blood resistance unit 4 will collect blood pin 1b and be wrapped in the blister cavities fully; Needle stand 3 is positioned at the inner chamber epimere of urceolus 5, the front end of lock banking stop 6 is narrow, and the place of cracking extend among the fluting 3c of the fluting 5c of urceolus conehead basilar part and needle stand pylon, lock banking stop is compressed in the front end of the spacing tube inner chamber outside of needle stand 3 lockings in the conehead bore with spring 2 simultaneously; The triggering sheet 6a of button 6 then disappears in the prominent ridge 5g ring of the shape of a hoof of urceolus 5 front ends, and its bottom surface has ligule support chip 5f to support, to avoid transporting the false triggering in carrying or the operating process.Puncture needle 1a appearance has sheath 7 to cover, the inboard and conehead appearance close-fitting of its port, but can pull out.
More than constitute the overall structure of a kind of novel pen type safety blood taking pin of the present invention.
Accompanying drawing 7 be a kind of novel pen type safety blood taking pin of the present invention after use, needle structure is ruined type, needle tubing 1 and needle stand 2 and is retracted to the structure cutaway view that urceolus 5 inner chambers are protected fully; In conjunction with the accompanying drawings 6 and accompanying drawing 7, when a kind of novel pen type safety blood taking pin of the present invention need use, pull up the sheath 7 of blood taking needle front end earlier, according to the venipuncture routine, tie up the vein tourniquet, after treating partly sterilised of puncture portion, hand-held safety blood taking pin urceolus 5 of the present invention, row vein puncture, wait to puncture successfully after, hold fixedly venipuncture needle 1a position of urceolus 5, an other hands is taken vacuum test tube, the plug end is inserted urceolus 5 tail end cavitys, and thumb is pressed the vacuum test tube bottom, and four refer to separately control urceolus crimping handle 5e, finger is firmly held mutually, vacuum test tube is inserted urceolus 5, make collection blood pin 1b puncture blood resistance unit 4 and pass vacuum test tube front end plug, the negative pressure of vacuum in the blood taking tube can enter vacuum test tube with the suction of vein blood vessel inner blood.When treating that negative pressure disappears, that is gather blood volume when reaching pre-provisioning request, extract blood taking tube; If desired, can above-mentioned repeatedly action, realize the venous blood collection of multitube.(when treating that blood sampling finishes, extract vein blood taking needle) the proficiency local pressing type hemostasia, grip the hands of blood taking needle holder urceolus in addition, available this hands thumb is pushed downwards and is triggered button 6a, make it to move down along outer cylinder front end conehead fluting place, make the narrow 6c of the cracking place of lock banking stop front end leave the pylon 3b fluting 3c of needle stand, then make lock banking stop front end square hole 6b place corresponding with needle stand pylon 3b, be slightly larger than the length of side of needle stand pylon 3b foreign side because of the square hole length of side, the pylon 3b of needle stand breaks away from the restriction of lock banking stop stenosis 6c, spring 2 is discharged, drive needle stand 3, needle tubing 1, blood resistance unit 4 together enters in the space of urceolus 5, is stopped in the urceolus by the prominent ridge 5d restriction of the annular of urceolus 5 inwalls until the abduction fin 3e of needle stand 3.
Because the diameter of the abduction fin 3e of needle stand 3 equals the diameter of outer tube inner chamber, but internal diameter less than the prominent ridge 5d of wall circular in the urceolus hypomere, so, when needle stand lower end abduction fin 3e when dropping to the prominent ridge 5d of contact outer tube inner wall annular, can make needle stand 3 and collection blood pin 1b by the prominent ridge 5d restriction of the annular of urceolus 5 inwalls and stop in the urceolus.Because spring 2 length L are greater than the length W of needle stand spring support platform 3d to venipuncture needle point 1a; Urceolus length is greater than needle tubing length; The prominent ridge 5d of ring-type is to the distance Y of the urceolus lower edge length greater than blood resistance unit.After above structure and condition have guaranteed that the needle tubing retraction enters urceolus, and because the effect of spring 2 can not expose to outside urceolus and the cone head hole needle tubing needle point.
Claims (9)
1. a novel pen type safety blood taking pin is made up of needle tubing (1), spring (2), needle stand (3), blood resistance unit (4), urceolus (5), button (6) and sheath (7); It is characterized in that: bonding needle tubing (1) in central porose (3a) of needle stand (3), the needle stand hypomere has spring support platform (3d), its periphery pocketed springs (2), the nearly middle part of support platform (3d), the outer quadrate pylon (3b) of interior circle is vertically upward arranged, internal aperture is slightly larger than the spring external diameter, and there is symmetric fluting (3c) in the stage casing of pylon (3b); The front end of urceolus (5) has conehead, conehead endoporus (5a) dwindles and communicates with urceolus (5) inner chamber at opening part, at the conehead basilar part symmetric fluting (5c) is arranged, in the urceolus front wall surfaces several projections (3b1,3b2) are arranged, the middle hypomere of the lock banking stop of button (6) has square hole (6b), the square hole lower edge has crack (6c), and square hole upper edge curved (H) enlarges, and the arc radius equals the radius of conehead hypomere periphery.
2. according to the said a kind of novel pen type safety blood taking pin of claim 1, it is characterized in that: the middle hypomere of needle stand (3) has a spring support platform (3d), at platform surface, the periphery of needle stand has the pylon (3b) of a vertical interior round foreign side, internal aperture is slightly larger than spring (2) external diameter (T), the outer length of side of pylon (3b) is slightly less than the length of side of square hole in the urceolus conehead basilar part, in the stage casing of pylon (3b) symmetric fluting (3c) is arranged, the height of fluting is greater than the thickness of button (6) lock banking stop, distance (P) between two flutings equals the external diameter (T) of spring (2), but less than the width (Q) of crack (6c) of lock banking stop lower end; The hypomere of needle stand (3) has the abduction fin (3e) of three symmetrical distributions, and the maximum gauge of abduction fin is equal to or slightly less than the urceolus internal diameter, is greater than the internal diameter of the interior prominent ridge (5d) of annular of outer tube inner wall simultaneously.
3. according to the said a kind of novel pen type safety blood taking pin of claim 1, it is characterized in that: the middle hypomere of the lock banking stop of button (6) has a square hole (6b), and its length of side is slightly larger than the length of side of pylon (3b); The lower edge of the lock banking stop square hole (6b) of button (6) has a perforation to crack (6c), and the width of this seam (Q) equals the external diameter of spring (2) less than the length of side of pylon (3b), and square hole upper edge curved (H) enlarges, and the arc radius equals the radius of conehead hypomere periphery; The hypomere of button (6) lock banking stop has the wedge shape barb (6d) of a pair of abduction, and the spacing of two barbs (6d) is greater than the distance between two projections (5b1), and there is a circular projection (6a) on the surface of the triggering sheet of button (6).
4. according to the said a kind of novel pen type safety blood taking pin of claim 1, it is characterized in that: urceolus (5) is a tubular structure, its inner hollow, the outside crimping of urceolus 5 lower edge forms handle and shakes hands (5e), and outer cylinder front end has conehead, and conehead porose (5a) also communicates with outer tube inner chamber, the aperture dwindles in the upper end and forms the constriction step, endoporus is square in the expansion of conehead hypomere, and this square hole length of side is slightly larger than the length of side of pylon (3b), and the height of square hole is greater than the height of pylon (3b); The hypomere inwall of urceolus (5) has the prominent ridge (5d) of an annular, and the prominent ridge (5d) of annular arrives the length of the distance (Y) of urceolus (5) lower edge greater than blood resistance unit (4); The internal radius that the prominent ridge (5d) of annular forms is less than the diameter of needle stand hypomere abduction fin (3e).
5. according to the said a kind of novel pen type safety blood taking pin of claim 1, it is characterized in that: there is a pair of symmetric fluting (5c) the antetheca contact position at the hypomere and the urceolus (5) of conehead; Distance (R) equals spring (2) external diameter between two flutings, but is slightly less than the width (Q) of narrow the cracking (6c) of lock banking stop hypomere, and the height of fluting (5c) is slightly larger than the thickness of button (6) lock banking stop; Fluting (5c) makes the conehead inner chamber communicate with the external world.
6. according to the said a kind of novel pen type safety blood taking pin of claim 1, it is characterized in that: urceolus (5) front wall surfaces that is connected with urceolus (5) in the conehead lower end, three projections are arranged, wherein (5b1) is two, be symmetrically distributed in the both sides of the urceolus antetheca axis parallel with urceolus (5) handle (5e) major axis, and be to extend to the right with the axle center, its spacing is from the width that equals lock banking stop; Be one (5b2), be positioned on the axis of the urceolus antetheca parallel that extend, they carry out spacing to lock banking stop (6) outside the conehead periphery begins left with the long axis of urceolus handle (5e).
7. according to the said a kind of novel pen type safety blood taking pin of claim 1, it is characterized in that: with the infall of vertical outer cylinder front end sidewall of urceolus handle major axis and overcoat antetheca, one semi-ring (Horse hoof) the shape ridge (5g) of dashing forward is arranged, the inboard outer tube wall disappearance of semi-circular prominent ridge; Urceolus antetheca at corresponding site extends upward, to 3/5ths radius, crooked to the urceolus below, less than 90 °, form the resiliency supported sheet (5f) that duck tongue shaped is upturned, its profile is less than the inner edge of the prominent ridge (5g) of the shape of a hoof, and it is at regular intervals with it, at the hypomere inwall of urceolus (5), the prominent ridge (5d) of an annular is arranged, it arrives the length of the distance (Y) at handle edge greater than blood resistance unit (4).
8. according to the said a kind of novel pen type safety blood taking pin of claim 3, its spy is characterised in that: the lock banking stop of button (6) is installed in the fluting (5c) of basilar part of urceolus (5) conehead, and by several projections (5b1,5b2, the restriction location, there is circular projection (6a) on the triggering sheet surface of button 6, be installed in the semi-circular groove that the prominent ridge of the semi-ring shape of a hoof of the front end of urceolus (5) forms, the below has support chip (5f) to support.
9. according to the said a kind of novel pen type safety blood taking pin of claim 1, it is characterized in that: the length (L) of spring (2) is greater than the distance (W) of spring support platform (3c) to puncture needle (1a) point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106226855A CN102038510A (en) | 2010-12-27 | 2010-12-27 | Novel pen type safety blood taking needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106226855A CN102038510A (en) | 2010-12-27 | 2010-12-27 | Novel pen type safety blood taking needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102038510A true CN102038510A (en) | 2011-05-04 |
Family
ID=43905299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106226855A Pending CN102038510A (en) | 2010-12-27 | 2010-12-27 | Novel pen type safety blood taking needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102038510A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102783953A (en) * | 2012-08-17 | 2012-11-21 | 张亚平 | Novel pen type safe blood taking needle |
| CN109646019A (en) * | 2019-02-15 | 2019-04-19 | 苏州施莱医疗器械有限公司 | Modified tail portion push type disposable safe hemostix |
-
2010
- 2010-12-27 CN CN2010106226855A patent/CN102038510A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102783953A (en) * | 2012-08-17 | 2012-11-21 | 张亚平 | Novel pen type safe blood taking needle |
| CN109646019A (en) * | 2019-02-15 | 2019-04-19 | 苏州施莱医疗器械有限公司 | Modified tail portion push type disposable safe hemostix |
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Application publication date: 20110504 |