CN101185784A - Needle for inserting bottle - Google Patents

Abstract

The invention provides a bottle inserting needle which is provided with a bump for prevention of accidental slip on the surface, the bump consists of a pyramid bump part and a hillock bump part which are arranged sequentially from the near needle tip to the distal needle tip along the axial direction of the needle body and are combined into a whole; the prism bump part is a triangular pyramid body, the two side edges I and II thereof are arranged at the surface of the needle body, the pyramid top is close to the needle tip, the included angle Alpha of the third side edge III and the axis line of the needle body is not larger than 60 degrees; the near needle tip of the hillock bump part is connected with the distal needle tip of the pyramid bump part, and the included angle Beta of the connection line of the point of crossing face of the hillock bump part and the needle body which is farthest from the needle tip and the point on the cross line of the hillock bump part and the pyramid bump part which is farthest from the needle body vertically is not less than 45 degrees and not more than 90 degrees. The bottle inserting needle of the invention can not only effectively prevent the accidental fall off, but also reduce the damage to a rubber bottle stopper during insertion and pulling out of the bottle inserting needle, so as to meet the using requirements of the repeated insertion into the bottle stopper and maintaining good closing property of the bottle stopper; in addition, the invention has simple structure, low cost and easy large-scale production and usage.

Description

Needle for inserting bottle

Technical field

The present invention relates to medical Transfusion device, relate in particular to the needle for inserting bottle of transfusion device.

Background technology

The intravenous transfusion device of clinical use generally includes needle for inserting bottle, Murphy's burette, tube for transfusion, drips fast actuator, filter and venous needle.Wherein, needle for inserting bottle be meant be used to puncture the medicinal liquid memorizer and and tube for transfusion between the parts that connect.Present widely used needle for inserting bottle generally includes the cylindrical needle body of band sharpened tip, and such design makes needle for inserting bottle thrust the container bottle stopper easily, also is easy to extract.Come off but also meet accident easily simultaneously, pollute, also the possibility delay treatment; Also therefore, the opening of medicine liquid channel on the needle body surface often can not be too near to the air admission transfusion device pipeline that the needle body bottom causes to avoid accidental, transfusion always has a certain amount of medicinal liquid to remain in the infusion vessel when finishing like this, cause waste, especially obvious when less and medicinal liquid is more expensive when container.In order to address these problems, people have carried out some improvement to original needle for inserting bottle.The patent No. is the needle for inserting bottle that 200520126635.2 Chinese utility model patent discloses needle body surface band projection.This design can solve the problem that needle for inserting bottle comes off, but can increase the damage to bottle stopper to a certain extent, causes leakage.Under some specific situations, such damage shows particularly outstandingly: in operating room, emergency room, places such as intensive care unit(ICU) and 120 first aid stations, patient's the state of an illness is generally comparatively complicated, often need to substitute the use medicinal liquid according to the variation of the state of an illness or therapeutic scheme in advance, such as, suspend a kind of medicinal liquid of not being totally lost and change another kind of medicinal liquid, then more preceding a kind of medicinal liquid is totally lost, just may repeatedly puncture and extract same bottle liquid medicine, use the needle for inserting bottle of the disclosed band projection of above-mentioned utility model patent repeatedly to puncture, can cause very big damage to bottle closure of rubber, cause serious leakage.

Given this, the present inventor thinks necessary existing needle for inserting bottle is further improved.

Summary of the invention

The object of the present invention is to provide a kind ofly both can prevent accidental, can not cause excessive damage again and cause the needle for inserting bottle of leakage bottle stopper.

To achieve these goals, the present inventor on the basis of existing technology, shape to the projection on needle for inserting bottle needle body surface is studied, find: sting fashionable, elongated and narrow projection is more favourable to the cutting of bottle stopper rubber, the similar sharp blade otch of formed otch help avoiding producing tearing property otch on bottle stopper, and the latter causes rubber grain to come off easily and causes leakage; Yet too narrow little projection can't prevent that needle for inserting bottle from coming off, when too roomy projection afterbody causes extracting again easily to the damage of bottle stopper.The present inventor has investigated several important parameters of decision shape for lugs through a large amount of tests, makes following design:

Needle for inserting bottle provided by the present invention comprises the projection on needle body surface, and this projection is by axially being arranged in order and the rib teat and the mound teat that are connected as a single entity are formed to needle tip far away from nearly needle tip along needle body; The rib teat is the rhizoma sparganic cone, and its two incline I, II are positioned at the needle body surface, and the pyramid summit is near needle point, two end points of the 3rd incline III and angle α≤60 of needle body axis °; The nearly needle tip of mound teat and the needle tip far away of rib teat join, mound teat and needle body intersect identity distance on needle point solstics and mound teat and rib teat intersection apart from the line in needle body vertical dimension solstics and the 45 °≤β of angle of needle body axis≤90 °;

The preferred α of above-mentioned angle α of needle for inserting bottle of the present invention≤30 °;

The preferred 60 °≤β of above-mentioned angle β of needle for inserting bottle of the present invention≤75 °;

The mound teat of needle for inserting bottle of the present invention and needle body mutually on the cross surface apart from the needle point solstics respectively with the incline I of rib teat and the 60 °≤γ of the formed angle of non-apex end line of incline II≤120 °;

The projection of needle for inserting bottle of the present invention and needle body smooth connection.

The needle for inserting bottle diameter of clinical use generally is no more than 6mm, the scope of the wide variety of projection also so very limited, under these circumstances, can the height of projection have determined projection normally bring into play expectation function to a great extent.The size decision rib teat height of above-mentioned angle α, through measuring and calculating and evidence, when angle α was limited in 60 °, the lifting of rib teat eases up, and was less to the damage of bottle closure of rubber; Especially it is excellent when angle α is in 30 °; Considered simultaneously that low projection was unfavorable for effectively preventing accidental, so most preferably angle α scope is 5～30 °.Above " the rhizoma sparganic cone " that the description of rib teat shape is adopted is meant sensu lato rhizoma sparganic cone, it comprises that also the pyramid side is to the recessed polyhedron of centrage of crossing the pyramid summit, intersecting of such polyhedron and needle body is more level and smooth, and the breach that the projection of formation forms when needle for inserting bottle thrusts the container bottle closure of rubber is more near the blade otch.The shape of incline I, II, III is influenced by this also may, and becomes to the recessed curve with certain radian in prism center.In fact, when 30 °≤α of angle≤60 °, be more prone to the polyhedron of side indent, although rib teat height is higher like this, but since thinner, difficult tearing property of generation otch.

With respect to the rib teat, the face shaping of mound teat is than tubbiness, but the selection scheme of profile is also more: can be inverted 1/2 circular cone or triangular pyramid, also comprise the triangular pyramid or the circular cone of side indent or evagination; When needle body is more tiny, can also be 1/4 spheroid.The nearly needle tip (upper end) of mound teat smoothly joins with the needle tip far away (lower end) of rib teat.Under the certain prerequisite of rising height, the size of above-mentioned angle β decision mound teat is along the needle body axial length, and β is big more, and mound teat tendency is precipitous more; On the contrary, β is more little, and mound teat tendency is mild more.The mound teat is the key structure that prevents the needle for inserting bottle accidental, and from this point of view, angle β is the bigger the better; What also need simultaneously to consider is that the damage to bottle stopper is also little when extracting needle for inserting bottle.Through evidence, angle β is between 75 °～90 ° the time, though also can realize purpose of the present invention, damage bottle stopper easily when extracting needle for inserting bottle needs operator's extreme care; Angle β is during less than 45 °, and the needle for inserting bottle probability of accidental from container increases greatly.Therefore, comparatively suitable is is controlled at the size of angle β between 45 °≤β≤90 °, preferred 45 °≤β≤75 °, most preferably 60 °≤β≤75 °.The parameter of another decision mound teat shape is angle γ above, is readily appreciated that γ is big more, helps preventing accidental more, but causes the probability of bottle stopper damage also bigger.Therefore, need to determine the comparatively reasonably angle of cut γ number of degrees, to guarantee effectively to prevent the needle for inserting bottle accidental, can alleviate the damage that projection causes bottle closure of rubber when extracting again, find through test of many times, comparatively reasonable range is 60 °≤γ≤120 °.

Improvement to needle for inserting bottle of the present invention concentrates on the projection on needle body surface, the needle for inserting bottle internal structure is not exerted an influence.Therefore, in fact the projection design after the improvement can be applied to any one needle for inserting bottle at present, has the needle for inserting bottle (publication number WO1996/035465) of the dual pathways and/or dribbling valve such as the needle body inside of generally using.

Use needle for inserting bottle of the present invention both can effectively prevent the accidental of needle for inserting bottle, alleviate simultaneously when plugging and unplugging needle for inserting bottle, repeat to insert bottle stopper and keep the good instructions for use of bottle stopper seal to satisfy to the damage of bottle closure of rubber.Needle for inserting bottle of the present invention is simple in structure, and is with low cost, is convenient to large-scale production and use.

Description of drawings

Accompanying drawing 3 width of cloth of the present invention, wherein:

The front view of Fig. 1 needle for inserting bottle of the present invention;

Fig. 2 is the right view of Fig. 1;

Fig. 3 is the cutaway view of Fig. 2.

Among the figure: 1. rib teat, 2. mound teat, 3. incline I, 4. incline II, 5. incline III, 6. opening.

The specific embodiment

The specific embodiment of the present invention is as shown in drawings: needle for inserting bottle of the present invention comprises the cylindrical needle body with sharpened tip, and two projections are set to the needle body lateral symmetry, and the width of projection and needle body smooth connection and projection is no more than the diameter of needle body.Described projection is by axially being arranged in order and therib teat 1 and themound teat 2 that are connected as a single entity are formed to needle tip far away from nearly needle tip along needle body;Rib teat 1 is the rhizoma sparganic cone, and the pyramid summit is near needle point; Article three, incline is a straightway, and wherein twoinclines 3,4 are positioned at the needle body surface, the line of two end points of the 3rd incline III5 and angle α≤60 of needle body axis °.Mound teat (2) smoothly joins with rib teat (1), is inverted 1/2 circular cone; Mound teat (2) and needle body intersect identity distance on needle point solstics (conical tip just) and mound teat (2) and rib teat (1) intersection apart from the line of needle body vertical dimension solstics (the needle point end points far away of incline III just) and the 45 °≤β of angle of needle body axis≤90 °.Medicine liquid channel is arranged at the needle body bottom at theopening 6 on needle body surface, is positioned atrib teat 1 with the needlepoint side ofmound teat 2 intersecting planes and apart from thisplane 2～5mm.

The shape of themound teat 2 in the above-mentioned specific embodiment also can have suitable variation, andinversion 1/2 circular cone of mentioning in the foregoing description,mound teat 2 can also be inverted pyramid.

As the distortion of the foregoing description, the incline ofrib teat 1 can be to the recessed curved section in pyramid center, and correspondingly, formedrib teat 1 is thin bladed, and such raised structures is particularly useful for the comparatively thick needle for inserting bottle of needle body.The side ofmound teat 2 not only can be appropriate indent, also can be appropriate evagination, and the former is particularly suitable for the comparatively thick needle for inserting bottle of needle body, and the latter is particularly useful for more tiny needle for inserting bottle.The limit situations ofmound teat 2 side evaginations is 1/4 spheroid, and when needle body was very tiny, roundblunt mound teat 2 lower end width were very little, can not cause damage to bottle stopper.

Introduce the way of recommendation of using needle for inserting bottle of the present invention herein in the lump: after needle for inserting bottle was inserted container bottle, the needle for inserting bottle under the user mode was vertical, horizontally rotates needle for inserting bottle, makes the projection on the needle for inserting bottle go to non-incision site, carries out transfusion operation; In the time of need extracting, rotate needle for inserting bottle, make projection go to bottle stopper upper cut position, extract then; When needs insert once more, the position operation when inserting first.

Embodiment 1

Present embodiment is the projection design that is applied to comparatively tiny needle for inserting bottle, and projection is longer:

Needle for inserting bottle with cylindrical needle body, needle body length 30mm, diameter 1.5mm is provided with to the needle body lateral symmetry two projections; Each projection length 10～18mm, width is slightly less than the needle body diameter, rising height (apart from the needle body surface) 1.75～2.75mm.The projection lower edge is apart fromneedle body bottom 5～7mm.This projection is made up ofrib teat 1 andmound teat 2, andrib teat 1 is the rhizoma sparganic cone, and the pyramid summit is near needle point; Incline I3 and incline II4 are positioned at the needle body surface, the line of two end points of the 3rd incline III5 and angle α=6.15～20.8 of needle body axis °.Mound teat 2 smoothly joins withrib teat 1, is inverted 1/4 spheroid; Moundteat 2 and needle body cross surface are apart from angle β=45 of the line of the needle point end points far away of needle point solstics and incline III and needle body axis °.Medicine liquid channel is arranged at the needle body bottom at theopening 6 on needle body surface, apart fromrib teat 1 and moundteat 2cross surfaces 2～5mm.

Embodiment 2

Present embodiment is the projection design (projection length is little) that is applied to comparatively tiny needle for inserting bottle:

Needle for inserting bottle with cylindrical needle body, needle body length 30mm, diameter 1.5mm is provided with to the needle body lateral symmetry two projections; Eachprojection length 5～10mm, width is slightly less than the needle body diameter, rising height (apart from the needle body surface) 1.75～2.75mm.The projection lower edge is apart fromneedle body bottom 5～7mm.This projection is made up ofrib teat 1 andmound teat 2, andrib teat 1 is the rhizoma sparganic cone, and the pyramid summit is near needle point; Incline I3 and incline II4 are positioned at the needle body surface, the line of two end points of the 3rd incline III5 and angle α=12～50.7 of needle body axis °.Mound teat 2 smoothly joins withrib teat 1, is inverted 1/4 spheroid; Moundteat 2 and needle body cross surface are apart from angle β=45 of the line of the needle point end points far away of needle point solstics and incline III and needle body axis °.Medicine liquid channel is arranged at the needle body bottom at theopening 6 on needle body surface, apart fromrib teat 1 and moundteat 2cross surfaces 2～5mm.

Embodiment 3

Present embodiment is the projection design (projection length is long) that is applied to the medium needle for inserting bottle of diameter:

Needle for inserting bottle with cylindrical needle body, needle body length 30mm, diameter 3.5mm is provided with to the needle body lateral symmetry two projections; Each projection length 10～18cm, width 1.5mm～3mm, rising height (apart from the needle body surface) 1.75～2.75mm.The projection lower edge is apart fromneedle body bottom 5～7mm.This projection is made up ofrib teat 1 andmound teat 2, andrib teat 1 is the rhizoma sparganic cone, and the pyramid summit is near needle point; Incline I3 and incline II4 are positioned at the needle body surface, the line of two end points of incline III5 and angle α=5.88～18.1 of needle body axis °.Mound teat 2 smoothly joins withrib teat 1, is inverted 1/2 circular cone; The line of the needle point end points far away of conical tip and incline III and angle β=60 of needle body axis °.Medicine liquid channel is arranged at the needle body bottom at theopening 6 on needle body surface, apart fromrib teat 1 and moundteat 2cross surfaces 2～5mm.

Embodiment 4

Present embodiment is the projection design (projection length is little) that is applied to the medium needle for inserting bottle of diameter:

Needle for inserting bottle with cylindrical needle body, needle body length 30mm, diameter 3.5mm is provided with to the needle body lateral symmetry two projections; Eachprojection length 5～10cm, width 1.5mm～3mm, rising height (apart from the needle body surface) 1.75～2.75mm.The projection lower edge is apart fromneedle body bottom 5～7mm.This projection is made up ofrib teat 1 andmound teat 2, andrib teat 1 is the rhizoma sparganic cone, and the pyramid summit is near needle point; Incline I3 and incline II4 are positioned at the needle body surface, the line of two end points of incline III5 and angle α=11～38.9 of needle body axis °.Mound teat 2 smoothly joins withrib teat 1, is inverted 1/2 circular cone; The line of the needle point end points far away of conical tip and incline III and angle β=60 of needle body axis °.Medicine liquid channel is arranged at the needle body bottom at theopening 6 on needle body surface, apart fromrib teat 1 and moundteat 2cross surfaces 2～5mm.

Embodiment 5

Present embodiment is the projection design that is applied to comparatively thick needle for inserting bottle;

Needle for inserting bottle with cylindrical needle body, needle body length 30mm, diameter 6mm is provided with to the needle body lateral symmetry two projections; Each projection length 11～13cm, width 2mm～4mm, rising height (apart from the needle body surface) 2～3mm.The projection lower edge is apart fromneedle body bottom 5～7mm.This projection is made up ofrib teat 1 andmound teat 2, andrib teat 1 is the distortion of rhizoma sparganic cone, and incline all becomes the curved surface of indent all to pyramid center indent with nonoverlapping two sides of needle body on therib teat 1, and the pyramid summit is near needle point; Incline I3 and incline II4 are positioned at the needle body surface, the line of two end points of incline III5 and angle α=9.58～17.9 of needle body axis °.Mound teat 2 smoothly joins withrib teat 1, is the distortion of inverted 1/2 circular cone, i.e. circular cone side indent; The line of the needle point end points far away of conical tip and incline III and angle β=60 of needle body axis °.Medicine liquid channel is arranged at the needle body bottom at theopening 6 on needle body surface, apart fromrib teat 1 and moundteat 2cross surfaces 2～5mm.

Embodiment 6

Present embodiment is the projection design (projection length is long) that is applied to the medium needle for inserting bottle of diameter:

Needle for inserting bottle with cylindrical needle body, needle body length 30mm, diameter 3.5mm is provided with to the needle body lateral symmetry two projections; Each projection length 10～18cm, width 1.5mm～3mm, rising height (apart from the needle body surface) 1.75～2.75mm.The projection lower edge is apart fromneedle body bottom 5～7mm.This projection is made up ofrib teat 1 andmound teat 2, andrib teat 1 is the rhizoma sparganic cone, and the pyramid summit is near needle point; Incline I3 and incline II4 are positioned at the needle body surface, the line of two end points of incline III5 and angle α=5.70～16.53 of needle body axis °.Mound teat 2 smoothly joins withrib teat 1, is inverted 1/2 circular cone; The line of the needle point end points far away of conical tip and incline III and angle β=75 of needle body axis °.Medicine liquid channel is arranged at the needle body bottom at theopening 6 on needle body surface, apart fromrib teat 1 and moundteat 2cross surfaces 2～5mm.

Embodiment 7

Present embodiment is the projection design that is applied to comparatively thick needle for inserting bottle;

Needle for inserting bottle with cylindrical needle body, needle body length 30mm, diameter 6mm is provided with to the needle body lateral symmetry two projections; Each projection length 11～13cm, width 2mm～4mm, rising height (apart from the needle body surface) 2～3mm.The projection lower edge is apart fromneedle body bottom 5～7mm.This projection is made up ofrib teat 1 andmound teat 2, andrib teat 1 is the distortion of rhizoma sparganic cone, and incline all becomes the curved surface of indent all to pyramid center indent with nonoverlapping two sides of needle body on therib teat 1, and the pyramid summit is near needle point; Incline I3 and incline II4 are positioned at the needle body surface, the line of two end points of incline III5 and angle α=9.12～16.4 of needle body axis °.Mound teat 2 smoothly joins withrib teat 1, is the distortion of inverted 1/2 circular cone, i.e. circular cone side indent; The line of the needle point end points far away of conical tip and incline III and angle β=75 of needle body axis °.Medicine liquid channel is arranged at the needle body bottom at theopening 6 on needle body surface, apart fromrib teat 1 and moundteat 2cross surfaces 2～5mm.

Embodiment 8

Present embodiment is the design that is applied to the needle for inserting bottle that needle body is elongated, projection is also grown:

Needle for inserting bottle with cylindrical needle body, needle body length 30mm, diameter 1.5mm is provided with to the needle body lateral symmetry two projections; Each projection length 10～18mm, width is slightly less than the needle body diameter, rising height (apart from the needle body surface) 1.75～2.75mm.The projection lower edge is apart fromneedle body bottom 5～7mm.The special feature of this embodiment is angle β=90 °.Promptly this projection only is made up ofrib teat 1, andrib teat 1 is the rhizoma sparganic cone, this rhizoma sparganic facies basialis pyramidis and needle body intersect vertical axis, and the pyramid summit is near needle point; Incline I3 and incline II4 are positioned at the needle body surface, the line of two end points of the 3rd incline III5 and angle α=5.55～15.38 of needle body axis °.Medicine liquid channel is arranged at the needle body bottom at theopening 6 on needle body surface, apart fromrib teat 1bottom surface face 2～5mm.

Suggestion only is applied to the needle for inserting bottle that needle body is elongated, projection is also long with the projection design of the described shape of present embodiment, and like this, because of being subjected to the needle body diameter restrictions, spout width is very little, and the projection global shape is extracted Shi Buhui bottle stopper is caused damage near thin sword.

Claims (6)

1. needle for inserting bottle comprises the projection on needle body surface, it is characterized in that described projection is by axially being arranged in order and the rib teat (1) and the mound teat (2) that are connected as a single entity are formed to needle tip far away from nearly needle tip along needle body; Rib teat (1) is the rhizoma sparganic cone, and its two incline I, II (3,4) are positioned at the needle body surface, and the pyramid summit is near needle point, the line of two end points of the 3rd incline III (5) and angle α≤60 of needle body axis °; The needle tip far away of the nearly needle tip of mound teat (2) and rib teat (1) joins, mound teat (2) and needle body intersect identity distance on needle point solstics and mound teat (2) and rib teat (1) intersection apart from the line in needle body vertical dimension solstics and the 45 °≤β of angle of needle body axis≤90 °.

2. needle for inserting bottle according to claim 1 is characterized in that described angle≤30 °.

3. needle for inserting bottle according to claim 1 is characterized in that 60 °≤β of described angle≤75 °.

4. needle for inserting bottle according to claim 1, it is characterized in that described mound teat (2) and needle body mutually on the cross surface apart from the needle point solstics respectively with the incline I (3) of rib teat (1) and the 60 °≤γ of the formed angle of non-apex end line of incline II (4)≤120 °.

5. the described needle for inserting bottle of arbitrary claim in requiring according to aforesaid right is characterized in that described projection and needle body smooth connection.

6. according to the described needle for inserting bottle of arbitrary claim in the claim 1 to 4, it is characterized in that described projection is 2.

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