CN104623760A - Butterfly needle - Google Patents
Butterfly needle Download PDFInfo
- Publication number
- CN104623760A CN104623760A CN201310564208.1A CN201310564208A CN104623760A CN 104623760 A CN104623760 A CN 104623760A CN 201310564208 A CN201310564208 A CN 201310564208A CN 104623760 A CN104623760 A CN 104623760A
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- China
- Prior art keywords
- syringe
- cylinder wall
- needle
- needle cylinder
- locking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- 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
-
- 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
-
- 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
- A61B5/150541—Breakable protectors, e.g. caps, shields or sleeves, i.e. protectors separated destructively, e.g. by breaking a connecting area
-
- 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
- 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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
-
- 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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/84—Drainage tubes; Aspiration tips
-
- 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
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3213—Caps placed axially onto the needle, e.g. equipped with finger protection guards
-
- 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
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
-
- 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
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
- A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
- A61M2005/3247—Means to impede repositioning of protection sleeve from needle covering to needle uncovering position
Abstract
The invention discloses a butterfly needle which comprises a needle base and a needle cylinder with a longitudinal axis. The needle base is arranged in the needle cylinder and can move from a stretching position to a contracting position relative to the needle cylinder. The stretching position is located on the far side of the needle cylinder, and the contracting position is located on the near side of the needle cylinder. The butterfly needle further comprises a stretching position locking device capable of locking the needle base to the stretching position in a releasable mode and a contracting position locking device capable of locking the needle base to the contracting position. After the butterfly needle is used, a needle head of the butterfly needle can be completely placed in the needle cylinder and prevented from accidental piercing.
Description
Technical field
The present invention relates to a kind of butterfly pin.
Background technology
In the medical practices such as venous transfusion, blood transfusion, blood sampling, tremulous pulse and venous blood dialysis, usually by being called as the venoclysis needle of " butterfly pin " traditionally, venous transfusion pin, vein blood taking needle, tremulous pulse and venous blood dialysis needle etc. be configured on the arteriovenous pipeline of intravenous transfusion device, venous transfusion device, vein vacuum blood collector, hemodialysis.This butterfly pin comprises the syringe needle for piercing through intravasation and is enclosed within the pin cap outside syringe needle.Pin cap prevents syringe needle to be damaged on the one hand, prevents accidental needle sticks medical personnel etc. from may contact the personnel of butterfly pin on the other hand.
In order to prevent used syringe needle from causing infection to people, the syringe needle from Vessel extraction must load in former pin cap by medical personnel.
But use traditional butterfly pin, when the complete extraction syringe needle of clinical manipulation, the syringe needle speckling with patient blood causes the probability of the accidental injury of medical personnel and patient and infection quite large.Have statistics to show, nursing staff on average for each person every year accidental needle sticks number of times be 2.42 times, wherein contaminative pinprick is 0.88 time; Doctor's accidental needle sticks number of times is average 0.62 time for each person every year, contaminative pinprick 0.38 time.
In order to provide safe working environment to medical personnel, prevent medical personnel from infecting virus because surprisingly being drawn thorn by needle point, in the urgent need to adopting security type butterfly pin.More current countries make laws, mandatory provision Clinical practice security type needle set.
Summary of the invention
Correspondingly, the invention provides a kind of butterfly pin, it syringe comprising needle stand and there is longitudinal axis.Described needle stand is arranged on also can relative to described syringe from extended position to retracted position in described syringe, and described extended position is positioned at the distally of described syringe, and described retracted position is positioned at the nearside of described syringe.Described butterfly pin also comprises the extended position locking device that releasably described needle stand can be locked in described extended position and the retracted position locking device that described needle stand can be locked in described retracted position.
Described syringe comprises the needle cylinder wall limiting its shape, and the distally that described extended position locking device can be included in described syringe penetrates pass through openings, the locking groove that the outer peripheral face of described needle stand is formed and the latch members that described needle cylinder wall is formed.Described latch members can inject in the locking groove of described needle stand through the pass through openings of described syringe and also can leave from the locking groove of described needle stand.
Described retracted position locking device can be included in locking groove that described needle stand outer peripheral face is formed and the locking that extends towards the inside of described syringe at the nearside of described syringe protruding, at described retracted position, the locking bump bonds of described syringe is in the locking groove of described needle stand.
Especially, the invention provides a kind of butterfly pin, it syringe comprising syringe needle, needle stand and there is longitudinal axis.Described needle stand comprises the locking groove be formed on its outer peripheral face, and wherein, described syringe needle is connected to the distal end of described needle stand.Described syringe comprise the needle cylinder wall defining described syringe shape, the distally being formed in described syringe and penetrate described needle cylinder wall pass through openings, penetrate described needle cylinder wall and be formed in the nearside of described syringe and extend along the longitudinal axis of described syringe and be opened on the through slot of proximal end and locking projection.Described locking extends at least one section of needle cylinder wall of being separated by described through slot and towards the inside of described syringe with convexing to form, and described locking projection can be bonded in the locking groove of described needle stand.Described butterfly pin also comprises latch members and shank of the key.Described latch members can inject in the locking groove of described needle stand through the pass through openings of described syringe and also can leave from the locking groove of described needle stand.Described shank of the key comprise can carry out operating with hands handle portion, for the pivot section that is connected with described needle cylinder wall pivotable and maintenance cylindrical wall.One in described pivot section and described needle cylinder wall comprises pivotal axis, and another in described pivot section and described needle cylinder wall comprises pivotable groove, and described pivotal axis can pivotally be supported in described pivotable groove.Described maintenance cylindrical wall is formed in the part can moved relative to described needle cylinder wall of described shank of the key towards described needle cylinder wall, and it is towards a side opening of described needle cylinder wall, forms two open ends.On the inner surface that described latch members is formed in described maintenance cylindrical wall and the opening stretched between described open end, a part in described open end and described needle cylinder wall comprises maintenance groove, another part in described open end and described needle cylinder wall comprises maintenance bead, and described maintenance bead can be bonded in described maintenance groove in a detachable fashion.Wherein, described needle stand is arranged on also can relative to the retracted position of described syringe extended position distally to nearside in described syringe, at described extended position, described syringe needle stretches out described syringe to carry out medical care precess and the maintenance cylindrical wall of described shank of the key keeps described syringe through opening accepts, described latch members injects in the locking groove of described needle stand through the pass through openings of described needle cylinder wall simultaneously, at described retracted position, described syringe needle be fully retracted the inside of described syringe and the locking bump bonds of described syringe in the locking groove of described needle stand.
Present invention also offers a kind of butterfly pin, it syringe comprising syringe needle, needle stand and there is longitudinal axis.Described needle stand comprises the locking groove be formed on its outer peripheral face, and wherein, described syringe needle is connected to the distal end of described needle stand.Described syringe comprise the needle cylinder wall defining described syringe shape, the distally being formed in described syringe and penetrate described needle cylinder wall pass through openings, penetrate described needle cylinder wall and be formed in the nearside of described syringe and extend along the longitudinal axis of described syringe and be opened on the through slot of proximal end and locking projection.Described locking extends at least one section of needle cylinder wall of being separated by described through slot and towards the inside of described syringe with convexing to form, and described locking projection can be bonded in the locking groove of described needle stand.Described butterfly pin also comprises latch members, can be arranged on the butterfly wing on described syringe and shank of the key.Described latch members can inject in the locking groove of described needle stand through the pass through openings of described syringe and also can leave from the locking groove of described needle stand.The described butterfly wing comprises the tubular installation portion for being arranged on described syringe outer peripheral face, and described latch members is formed on the end face of described tubular installation portion by elastic connection element.Described shank of the key comprises and can carry out with hands the handle portion that operates and be arranged in described needle cylinder wall and the tubular sliding part that can slide along described needle cylinder wall.Described sliding part comprise be formed in described sliding part towards the extruding groove in the part of described needle cylinder wall.Wherein, described needle stand is arranged on also can relative to the retracted position of described syringe extended position distally to nearside in described syringe, at described extended position, described syringe needle stretches out described syringe to carry out medical care precess and the extruding groove of described shank of the key to contact with described latch members and is pressed in the locking groove of described needle stand by described latch members by the pass through openings of described syringe, at described retracted position, described syringe needle be fully retracted the inside of described syringe and the locking bump bonds of described syringe in the locking groove of described needle stand.
Its syringe needle, after being used to complete, can being placed in syringe, preventing syringe needle from causing and stab unexpectedly by butterfly pin according to the present invention completely.
Accompanying drawing explanation
Fig. 1 is the axonometric chart of the butterfly pin according to first embodiment of the invention.
Fig. 2 is the axonometric chart of the needle stand with syringe needle of Fig. 1 butterfly pin.
Fig. 3 is the axonometric chart of the syringe of Fig. 1 butterfly pin.
Fig. 4 is the axonometric chart of the shank of the key with latch members of Fig. 1 butterfly pin.
Fig. 5 is the sectional view of needle stand when extended position of Fig. 1 butterfly pin.
Fig. 6 is the sectional view of needle stand when retracted position of Fig. 1 butterfly pin.
Fig. 7 is the sectional view of the amplification intercepted along the VII-VII of Fig. 6.
Fig. 8 is the axonometric chart of the butterfly pin according to second embodiment of the invention.
Fig. 9 is the decomposing schematic representation of Fig. 8 butterfly pin.
Figure 10 is the axonometric chart of the shank of the key of Fig. 8 butterfly pin.
Figure 11 is the sectional view of the shank of the key of Fig. 8 butterfly pin.
Figure 12 is the axonometric chart of the butterfly wing of Fig. 8 butterfly pin.
Figure 13 is the sectional view of needle stand when extended position of Fig. 8 butterfly pin.
Figure 14 is the sectional view of needle stand when retracted position of Fig. 8 butterfly pin.
Detailed description of the invention
Butterfly pin of the present invention can be applied to (but being not limited to) such as venoclysis needle, venous transfusion pin, vein blood taking needle and tremulous pulse and venous blood dialysis needle.
Explain content of the present invention by way of example with reference to the accompanying drawings.It will be understood by those skilled in the art that diagramatic content is indicative, be not used to limit the present invention.
Figure 1 shows that the axonometric chart of the butterfly pin according to first embodiment of the invention.Butterfly pin comprises syringe needle 11, the butterfly wing 16, conduit 15, intermediate plate 17, Rule (Luer) joint 18 and cap 19.The technical solution that the present invention is directed to aforementioned technical problem provides does not relate to these components, and these components can use structure well known in the prior art, so the present invention is no longer described in more detail these components.
As shown in Figure 2, butterfly pin also comprises needle stand 12.The proximal end of needle stand 12 is connected with syringe needle 11 with known in this field, and its distal end is connected with conduit 15 in a manner well known in the art.In the present invention, " nearside " refers to the side at medical personnel patient place when using butterfly pin for patient or the side at syringe needle 11 place; " distally " refers to medical personnel side or deviates from the side of syringe needle 11.
See Fig. 3, Fig. 5 and Fig. 6.Butterfly pin of the present invention also comprises the syringe 13 with longitudinal axis 130.Needle stand 12 is arranged on the retracted position (Fig. 6) that also can move to nearside in syringe 13 relative to syringe 13 extended position distally (Fig. 5).As shown in Figure 5, at extended position, syringe needle 11 stretches out syringe 13 to carry out medical care precess; As shown in Figure 6, at retracted position, syringe needle 11 is fully retracted the inside of syringe 13, avoids the syringe needle 11 after using to cause accidental puncture.
As shown in Figure 2, needle stand 12 comprises the locking groove 121 be formed on its outer peripheral face 120.Locking groove 121 can be such as the annular groove circumferentially formed on outer peripheral face 120 shown in figure, also can be single or the plural groove (not shown) of Discrete Distribution.
In the present invention, " formation " both can be that correlated characteristic forms, and was an overall appropriate section; Also can be that correlated characteristic is independent of one another, then be combined with each other by modes such as such as joggle, bonding, thread connection or welding.
In the present invention, " ... with groove " (such as locking groove 121) or " ... with protruding " (such as locking projection 133 described below) etc., refers to the groove with corresponding uses or function or projection etc.
Fig. 3 shows the syringe 13 according to first embodiment of the invention.This syringe 13 comprises protruding 133 (simultaneously see Fig. 7) of locking that the needle cylinder wall 131 defining its shape, the pass through openings 132 formed at distally (right side in figure) the puncture needle barrel 131 of syringe and the nearside (left side in figure) at syringe extend towards the inside of syringe.Locking protruding 133 can be bonded in the locking groove 121 of needle stand 12, thus together form retracted position locking device of the present invention with locking groove 121, prevent needle stand 12 from surprisingly leaving from this position during for being positioned at retracted position (Fig. 6) at needle stand 12.
In the present invention, " joint " can be inseparable, also can be separable." inseparable " refers to the isolation of components that only just can make when king-sized active force (such as tearing down) to be combined with each other; " separable " then refers to that the parts be combined with each other can be separated from each other when normally exerting oneself.Various separable or inseparable such as buckle structure well known in the prior art, can be used as component for engaging of the present invention or structure.The present invention repeats no more the details of these known features.
Display as the clearest in Fig. 7, locking projection 133 and locking groove 121 are rectangle or the right-angle surface cooperation such as square on the longitudinal cross-section in axis 130 direction along the longitudinal.According to another embodiment of the present invention (not shown), locking protruding 133 and locking groove 121 can be configured to dovetail face and coordinate on longitudinal cross-section.So, when retracted position shown in needle stand 12 is from the extended position shown in Fig. 5 to Fig. 6, locking protruding 133 is once enter into locking groove 121, can not be separated with locking groove 121, thus more reliably the needle stand 12 with syringe needle 11 is locked in retracted position, more reliably prevent used syringe needle 11 from stabbing the relevant personnel.
It should be appreciated by those skilled in the art that locking protruding 133 can take any concrete shape and identical or different quantity with locking groove 121, pair of engaging can be had at least together therebetween.
In the embodiment shown in figure 2, locking groove 121 is the annular grooves circumferentially formed on the outer peripheral face of needle stand 12.Annular groove is conducive to processing in some cases, and is convenient to locking protruding 133 and enters, and uses aiming at of projection 133 and locking groove 121 without the need to locking.Being appreciated that locking protruding 133 both can be the circle flange that syringe proximal end place is formed, also can be the one or several projections of Discrete Distribution.
See Fig. 2 and Fig. 7.Locking groove 121 can be formed in the nearside (right side of Fig. 2 and the left side of Fig. 7) of needle stand 12, and the edge of the proximal end 122 of needle stand 12 can be formed with chamfering 123; Alternatively (not shown), also can form chamfering at the edge of the locking of syringe 13 protruding 133; Or the edge of the proximal end 122 of needle stand 12 and locking protruding 133 all forms chamfering.When the existence of chamfering makes needle stand 12 from the extended position of Fig. 5 to the retracted position motion of Fig. 6, locking projection 133 easily can cross the proximal end 122 of needle stand 12, thus locking projection 133 can easily be entered in locking groove 121.
See Fig. 3.As a kind of preferred implementation, in order to make locking protruding 133 can easily enter in locking groove 121, through slot 135 can be formed in the needle cylinder wall 131 of syringe 13.Through slot 135 puncture needle barrel 131 is formed in the nearside of syringe 13, and the longitudinal axis 130 along syringe 13 extends and is opened on proximal end 134.In the example shown in Fig. 3, through slot 135 also comprises the part extended along needle cylinder wall 131 circumference, makes through slot 135 be formed as "T"-shaped.The present invention does not limit with distribution for the quantity of through slot 135, but preferably, forms the through slot 135 that two or more is symmetrical.Through slot 135 extends and opening and proximal end 134, and the nearside of needle cylinder wall 131 be divide into some sections of needle cylinder wall, and when particularly having two or more through slot 135, multistage needle cylinder wall forms cantilever design and is more easily out of shape.Locking protruding 133 is correspondingly formed at least one section of needle cylinder wall of being separated by through slot 135.
See Fig. 4 and Fig. 5.Butterfly pin according to the present invention also comprises shank of the key 14.Shank of the key 14 comprises and can carry out the handle portion 141 that operates and the pivot section 142 for being connected with needle cylinder wall 131 pivotable with hands.In the example in the figures, the pivot section 142 of shank of the key 14 forms pivotable groove 143, needle cylinder wall 131 is formed with pivotal axis 134.Pivotal axis 134 can pivotally be supported in pivotable groove 143, thus shank of the key 14 can be rotated relative to syringe 13 around pivotal axis 134.Alternatively, pivotal axis can be formed on the pivot section of shank of the key 14, and pivotable groove can be formed in needle cylinder wall 131.
Shank of the key 14 can also comprise maintenance cylindrical wall 144.The maintenance side opening of cylindrical wall 144 towards needle cylinder wall 131, forms two open ends 145.A part for syringe 13 can be received in maintenance cylindrical wall 144 through open end 145, and is kept by cylindrical wall 144 " embracing " or maintains.
In order to syringe 13 and maintenance cylindrical wall 144 be kept together, alternatively or further preferred mode, can form maintenance bead 146 on two open ends 145; Accordingly, needle cylinder wall 131 forms maintenance groove 136 (Fig. 3), maintenance bead 146 can be bonded in maintenance groove 136 in a detachable fashion.Should be appreciated that, also can form maintenance groove on open end 145, and form maintenance bead in needle cylinder wall 131.Or, an open end forms maintenance bead, in needle cylinder wall, forms maintenance groove correspondingly; And another open end is formed maintenance groove, in needle cylinder wall, form maintenance bead correspondingly.A part in two open ends of i.e. needle cylinder wall and maintenance cylindrical wall comprises maintenance groove, and the another part in two open ends of needle cylinder wall and maintenance cylindrical wall comprises maintenance bead.
Maintenance cylindrical wall 144 can be formed in the part can moved relative to needle cylinder wall 131 of shank of the key 14.In the diagram, maintenance cylindrical wall 144 and handle portion 141 are positioned at the two opposite sides of pivot section 142.But maintenance cylindrical wall 144 also can be formed in handle portion 141.
Butterfly pin of the present invention also comprises latch members 147, i.e. the component of similar locking bolt.In the example in the figures, latch members 147 be formed in maintenance cylindrical wall 144 inner surface on and the opening stretched between two open ends 145.As shown in Figure 5, when syringe 12 is while open end 145 enters maintenance cylindrical wall 144 and is kept to keep by cylindrical wall 144, latch members 147 can inject in the locking groove 121 of needle stand 12 through the pass through openings 132 of needle cylinder wall 131 and also can leave from locking groove 121.This is easy to realize, as long as such as make the size of latch members 147 be less than locking groove 121, and latch members 147 can take any shape.
Pass through openings 132 in above-mentioned latch members 147, latch recess 121 and needle cylinder wall 131 constitutes the extended position locking device of first embodiment of the invention, for needle stand 12 is releasably locked in the extended position shown in Fig. 5, this is because latch members 147 can leave locking groove 121 thus release needle stand 12.
Should be appreciated that, shank of the key 14 is only used to facilitate latch members 147 to inject and extract locking groove 121 and arranges, and is not necessary.In addition, maintenance cylindrical wall 144 is also omissible, and at this moment, shank of the key 14 can be formed in the part can moved relative to needle cylinder wall 131 of shank of the key 14.
Further, rotate relative to syringe 13 when extended position to prevent needle stand 12, this may affect such as syringe needle and insert the action of passages through which vital energy circulates, as shown in fig. 4 and fig. 2, multiple straight-tooth or the multiple ridge replaced and groove that axis 130 along the longitudinal extends can be formed on the relative surface of latch members 147 with locking groove 121.Like this, when described component 147 injects in latch recess 121, the ridge on the two apparent surface and groove engage each other, thus prevent the two to be orthogonal to the motion of ridge and groove bearing of trend, namely rotate.
See Figure 10 and Figure 11, for the ease of operator shank 201, some detent projection 206 can also be formed in handle portion 201.
Next, see Fig. 5 and Fig. 6, the operation according to the butterfly pin of first embodiment of the invention is described.
As shown in Figure 5, when needle stand 12 is positioned at extended position, syringe needle 11 stretches out syringe 13, at this moment, the handle portion 141 of shank of the key 14 is upwards lifted with hands, syringe 11 is made to pass through or squeeze open end 145 to enter in maintenance cylindrical wall 144 (Fig. 4), maintenance bead 146 on result open end 145 is bonded in the maintenance groove 136 (Fig. 3) in needle cylinder wall 131, simultaneously, the pass through openings 132 of latch members 147 in needle cylinder wall 131 be formed in maintenance cylindrical wall 144 top inner surface injects in the locking groove 121 of needle stand 12, thus, needle stand 12 is releasably locked in extended position.So, the medical care precess of wishing can be carried out with butterfly pin.
See Fig. 6.After having operated, can with hands to the handle portion 141 pressing down shank of the key 14, maintenance flange 146 is separated with maintenance groove 136, maintenance cylindrical wall 144 is separated with syringe 13, and the latch members 147 that result is formed in maintenance cylindrical wall 144 top inner surface leaves locking groove 121.At this moment, pull with hand conduit 15 (or needle stand 12), needle stand 12 is moved towards retracted position.In the process, the locking on syringe 13 protruding 133 is crossed the proximal end 122 of needle stand 12 and enters into locking groove 121, thus needle stand is locked in retracted position.Because at retracted position, it is inner that the syringe needle 11 on needle stand is positioned at syringe 13 completely, so, can ensure that the syringe needle 11 used can not the accidental puncture relevant personnel.
Describe the butterfly pin according to second embodiment of the invention referring to Fig. 8 to Figure 14, wherein identical with Fig. 1 to Fig. 7 Reference numeral represents identical component.Second embodiment is mainly the structure relevant with extended position locking device to the difference of the first embodiment, and description below will concentrate on these difference contents, repeat no more for identical content.
As shown in Figure 13 and Figure 14, the extended position locking device of second embodiment of the invention is identical with the first embodiment, the pass through openings 132 that the distally puncture needle barrel 131 being also included within syringe 13 is formed, the locking groove 121 that the outer peripheral face 120 of needle stand 12 is formed and latch members 147.
See Fig. 9 and Figure 12.Second embodiment of the invention, the butterfly wing 16 comprises the tubular installation portion 161 for being arranged on syringe 13 outer peripheral face.Latch members 147 is formed on the end face 162 of tubular installation portion 161 by elastic connection element 163.Elastic connection element 163 can be a kind of cantilever beam, and itself can be made with elastomeric material or non-elastic material.
In second embodiment of the invention, the shank of the key 20 for facilitating latch members 147 to inject and leave locking groove comprises and can carry out the handle portion 201 operated and the sliding part 204 that can slide along needle cylinder wall 131 with hands.In the example shown in Figure 10, sliding part 204 is tubular, but also can be any structure being adapted to be mounted within the enterprising line slip of syringe 13.
At the extruding groove 202 formed in the part of needle cylinder wall 131 of sliding part 204, as contacting with latch members 147 and latch members 147 being compressed into the extrusion structure of the locking groove 121 of needle stand 12.One end of the contact latch members 147 of extruding groove 202 is formed with chamfering 203, so that extrude latch members 147 towards needle cylinder wall 131.
See Figure 11 and Figure 14.In extruding groove 202, be formed with extend towards needle cylinder wall 131 first spacing protruding 205, accordingly, needle cylinder wall 131 be formed with extend towards extruding groove 202 second spacing protruding 137.When first spacing protruding 205 and second spacing protruding 137 contacts with each other, the range of movement of shank of the key 20 away from the butterfly wing 16 can be limited.
Following reference Figure 13 and Figure 14 describes the operation according to the butterfly pin of second embodiment of the invention.
As shown in figure 13, when needle stand 12 is positioned at extended position, syringe needle 11 stretches out syringe 13, at this moment, by the handle portion 201 of hand push shank of the key 20, shank of the key 20 is slided along syringe 13 towards the butterfly wing 16, chamfering 202 on extruding groove 202 end of shank of the key 20 contacts the latch members 147 on the butterfly wing 16 and the pass through openings 132 of latch members 147 in needle cylinder wall 131 is compressed into the locking groove 121 of needle stand 12, thus, needle stand 12 is releasably locked in extended position, so, the medical care precess of wishing can be carried out with butterfly pin.
See Figure 14.After having operated, can use the handle portion 201 of hands reverse push shank of the key 20, shank of the key 20 is separated with latch members 147, and latch members 147 leaves locking groove 121 under the elastic reaction of elastic connection element 163.At this moment, pull with hand conduit 15 (or needle stand 12), needle stand 12 is moved towards retracted position.In the process, locking on syringe 13 protruding 133 is crossed the proximal end 122 of needle stand 12 and enters into locking groove 121, thus needle stand is locked in retracted position, and it is inner syringe needle 11 to be accommodated in completely syringe 13, guarantees that used syringe needle 11 can not cause accidental puncture.
The specific embodiment of the present invention is described by way of example above with reference to accompanying drawing.The object of foregoing description explains principle of the present invention, instead of limit the scope of the invention.Those skilled in the art according to instruction of the present invention, can make various modifications and variations for above-mentioned detailed description of the invention.These improve and modification, fall into protection scope of the present invention.
Such as, although in detailed description of the invention shown in the drawings, locking shares the locking groove 121 on needle stand 12 with protruding 133 (retracted position locking devices) and latch members 147 (extended position locking device), but, needle stand 12 also can be formed with different locking grooves along the longitudinal, is respectively used to engage with protruding 133 and latch members 147 with locking.
Claims (25)
1. a butterfly pin, comprising:
Needle stand;
Have the syringe of longitudinal axis, described needle stand is arranged on also can relative to described syringe from extended position to retracted position in described syringe, and described extended position is positioned at the distally of described syringe, and described retracted position is positioned at the nearside of described syringe;
Releasably described needle stand can be locked in the extended position locking device of described extended position; And
Described needle stand can be locked in the retracted position locking device of described retracted position.
2. butterfly pin as claimed in claim 1, wherein, described syringe comprises the needle cylinder wall limiting its shape, and described extended position locking device comprises:
The pass through openings that described needle cylinder wall is formed is penetrated in the distally of described syringe;
The locking groove that the outer peripheral face of described needle stand is formed; And
Latch members, described latch members can inject in the locking groove of described needle stand through the pass through openings of described syringe and also can leave from the locking groove of described needle stand.
3. butterfly pin as claimed in claim 2, wherein, described extended position locking device also comprises shank of the key, described shank of the key comprises and can carry out the handle portion that operates and the pivot section for being connected with described needle cylinder wall pivotable with hands, and described latch members is formed in the part can moved relative to described needle cylinder wall of described shank of the key towards described needle cylinder wall.
4. butterfly pin as claimed in claim 3, wherein, one in the pivot section of described shank of the key and described needle cylinder wall comprises pivotal axis, another in the pivot section of described shank of the key and described needle cylinder wall comprises pivotable groove, and described pivotal axis can pivotally be supported in described pivotable groove.
5. butterfly pin as claimed in claim 3, wherein, described shank of the key also comprises maintenance cylindrical wall, described maintenance cylindrical wall is formed in the part can moved relative to described needle cylinder wall of described shank of the key towards described needle cylinder wall, it is towards a side opening of described needle cylinder wall, form two open ends, on the inner surface that described latch members is formed in described maintenance cylindrical wall and the opening stretched between described open end, described needle cylinder wall can enter described maintenance cylindrical wall through the open end of described maintenance cylindrical wall and be kept by described maintenance cylindrical wall, described latch members can inject in the locking groove of described needle stand through the pass through openings of described needle cylinder wall simultaneously.
6. butterfly pin as claimed in claim 5, wherein, a part in two open ends of described needle cylinder wall and described maintenance cylindrical wall comprises maintenance groove, another part in two open ends of described needle cylinder wall and described maintenance cylindrical wall comprises maintenance bead, and described maintenance bead can be bonded in described maintenance groove in a detachable fashion.
7. butterfly pin as claimed in claim 2, wherein, described latch members and the relative surface of the locking groove of described needle stand are formed with the multiple ridge replaced and groove that the longitudinal axis along described needle stand extends.
8. butterfly pin as claimed in claim 2, described extended position locking device also comprises the butterfly wing that can be arranged on described syringe, and described latch members is formed on the described butterfly wing by elastic connection element.
9. butterfly pin as claimed in claim 8, wherein, the described butterfly wing comprises the tubular installation portion for being arranged on described syringe outer peripheral face, and described latch members is formed on the end face of described tubular installation portion.
10. butterfly pin as claimed in claim 8, described extended position locking device also comprises shank of the key, described shank of the key comprises and can carry out the handle portion operated and the sliding part that can slide along described needle cylinder wall with hands, and described sliding part comprises and to contact with described latch members and described latch members to be compressed into the extrusion structure of the locking groove of described needle stand.
11. butterfly pins as claimed in claim 10, wherein, described extrusion structure comprise be formed in described sliding part towards the extruding groove in the part of described needle cylinder wall.
12. butterfly pins as claimed in claim 11, wherein, one end of the described latch members of contact of described extruding groove is formed with chamfering, so that extrude described latch members towards described needle cylinder wall.
13. butterfly pins as claimed in claim 11, wherein, described extruding groove forms the first spacing projection that oriented described needle cylinder wall extends, described needle cylinder wall is formed with the second spacing projection extended towards described extruding groove, and described first spacing projection and described second spacing projection can contact with each other to limit the range of movement of described shank of the key away from the described butterfly wing.
14. butterfly pins as claimed in claim 1, wherein, described retracted position locking device comprises:
The locking groove that described needle stand outer peripheral face is formed; With
The locking extended towards the inside of described syringe at the nearside of described syringe is protruding, and at described retracted position, the locking bump bonds of described syringe is in the locking groove of described needle stand.
15. butterfly pins as claimed in claim 14, wherein, described locking projection and described locking groove coordinate with right-angle surface on the cross section along described longitudinal axis direction.
16. butterfly pins as claimed in claim 14, wherein, described locking projection and described locking groove coordinate with dovetail face on the cross section along described longitudinal axis direction.
17. butterfly pins as claimed in claim 14, wherein, the locking groove of described needle stand is positioned at the nearside of described needle stand, the edge of the proximal end of described needle stand is formed with chamfering, and the locking of described syringe projection is easily entered the locking groove of described needle stand when described needle stand is from described extended position to described retracted position motion.
18. butterfly pins as claimed in claim 14, wherein, the edge that the locking of described syringe is protruding forms chamfering, and the locking of described syringe projection is easily entered the locking groove of described needle stand when described needle stand is from described extended position to described retracted position motion.
19. butterfly pins as claimed in claim 14, wherein, the needle cylinder wall of the nearside of described syringe is formed with through slot, described through slot penetrates the nearside that described needle cylinder wall is formed in described syringe, and the longitudinal axis along described syringe extends and is opened on proximal end.
20. butterfly pins as claimed in claim 19, wherein, described needle cylinder wall are formed with the through slot that two or more is symmetrical.
21. butterfly pins as claimed in claim 19, wherein, described through slot also comprises the part extended along described needle cylinder wall circumference, makes described through slot be "T"-shaped.
22. butterfly pins as claimed in claim 19, wherein, the locking of described syringe is with convexing to form at least one section of needle cylinder wall of being separated by described through slot.
23. butterfly pins as described in claim 2 or 14, wherein, the locking groove of described needle stand is the annular groove circumferentially formed on the outer peripheral face of described needle stand.
24. 1 kinds of butterfly pins, comprising:
Syringe needle;
Needle stand, described needle stand comprises the locking groove be formed on its outer peripheral face, and wherein, described syringe needle is connected to the distal end of described needle stand;
Have the syringe of longitudinal axis, described syringe comprises:
Define the needle cylinder wall of described syringe shape,
Pass through openings, described pass through openings is formed in the distally of described syringe and penetrates described needle cylinder wall,
Through slot, described through slot penetrates the nearside that described needle cylinder wall is formed in described syringe, and the longitudinal axis along described syringe extends and is opened on proximal end, and
Locking is protruding, and described locking extends at least one section of needle cylinder wall of being separated by described through slot and towards the inside of described syringe with convexing to form, and described locking projection can be bonded in the locking groove of described needle stand;
Latch members, described latch members can inject in the locking groove of described needle stand through the pass through openings of described syringe and also can leave from the locking groove of described needle stand; And
Shank of the key, described shank of the key comprises:
The handle portion that operates can be carried out with hands,
For the pivot section be connected with described needle cylinder wall pivotable, wherein, one in described pivot section and described needle cylinder wall comprises pivotal axis, another in described pivot section and described needle cylinder wall comprises pivotable groove, described pivotal axis can pivotally be supported in described pivotable groove, and
Maintenance cylindrical wall, described maintenance cylindrical wall is formed in the part can moved relative to described needle cylinder wall of described shank of the key towards described needle cylinder wall, it is towards a side opening of described needle cylinder wall, form two open ends, wherein, on the inner surface that described latch members is formed in described maintenance cylindrical wall and the opening stretched between described open end, a part in described open end and described needle cylinder wall comprises maintenance groove, another part in described open end and described needle cylinder wall comprises maintenance bead, described maintenance bead can be bonded in described maintenance groove in a detachable fashion,
Wherein, described needle stand is arranged on also can relative to the retracted position of described syringe extended position distally to nearside in described syringe, at described extended position, described syringe needle stretches out described syringe to carry out medical care precess and the maintenance cylindrical wall of described shank of the key keeps described syringe through opening accepts, described latch members injects in the locking groove of described needle stand through the pass through openings of described needle cylinder wall simultaneously, at described retracted position, described syringe needle be fully retracted the inside of described syringe and the locking bump bonds of described syringe in the locking groove of described needle stand.
25. 1 kinds of butterfly pins, comprising:
Syringe needle;
Needle stand, described needle stand comprises the locking groove be formed on its outer peripheral face, and wherein, described syringe needle is connected to the distal end of described needle stand;
Have the syringe of longitudinal axis, described syringe comprises:
Define the needle cylinder wall of described syringe shape,
Pass through openings, described pass through openings is formed in the distally of described syringe and penetrates described needle cylinder wall,
Through slot, described through slot penetrates the nearside that described needle cylinder wall is formed in described syringe, and the longitudinal axis along described syringe extends and is opened on proximal end, and
Locking is protruding, and described locking extends at least one section of needle cylinder wall of being separated by described through slot and towards the inside of described syringe with convexing to form, and described locking projection can be bonded in the locking groove of described needle stand;
Latch members, described latch members can inject in the locking groove of described needle stand through the pass through openings of described syringe and also can leave from the locking groove of described needle stand;
Can be arranged on the butterfly wing on described syringe, the described butterfly wing comprises the tubular installation portion for being arranged on described syringe outer peripheral face, and described latch members is formed on the end face of described tubular installation portion by elastic connection element; And
Shank of the key, described shank of the key comprises and can carry out with hands the handle portion that operates and be arranged in described needle cylinder wall and the tubular sliding part that can slide along described needle cylinder wall, described sliding part comprise be formed in described sliding part towards the extruding groove in the part of described needle cylinder wall
Wherein, described needle stand is arranged on also can relative to the retracted position of described syringe extended position distally to nearside in described syringe, at described extended position, described syringe needle stretches out described syringe to carry out medical care precess and the extruding groove of described shank of the key to contact with described latch members and is pressed in the locking groove of described needle stand by described latch members by the pass through openings of described syringe, at described retracted position, described syringe needle be fully retracted the inside of described syringe and the locking bump bonds of described syringe in the locking groove of described needle stand.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310564208.1A CN104623760B (en) | 2013-11-11 | 2013-11-11 | Butterfly needle |
| PCT/CN2014/087386 WO2015067106A1 (en) | 2013-11-11 | 2014-09-25 | Butterfly needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310564208.1A CN104623760B (en) | 2013-11-11 | 2013-11-11 | Butterfly needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104623760A true CN104623760A (en) | 2015-05-20 |
| CN104623760B CN104623760B (en) | 2019-07-19 |
Family
ID=53040878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310564208.1A Expired - Fee Related CN104623760B (en) | 2013-11-11 | 2013-11-11 | Butterfly needle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104623760B (en) |
| WO (1) | WO2015067106A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105877765A (en) * | 2016-06-27 | 2016-08-24 | 北京光耀世纪医疗科技有限公司 | Safety puncture needle |
| CN109009162A (en) * | 2018-07-30 | 2018-12-18 | 佛山科学技术学院 | A kind of disposable safe blood taking needle |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9456775B2 (en) | 2013-09-06 | 2016-10-04 | Millaghi Medical, Inc. | Passive safety I.V. blood collection catheter |
| IT202000017761A1 (en) * | 2020-07-22 | 2022-01-22 | Bnp S R L | DISPOSABLE SAFETY BUTTERFLY NEEDLE |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105877765A (en) * | 2016-06-27 | 2016-08-24 | 北京光耀世纪医疗科技有限公司 | Safety puncture needle |
| CN105877765B (en) * | 2016-06-27 | 2018-07-27 | 北京光耀世纪医疗科技有限公司 | A kind of safety type puncture needle |
| CN109009162A (en) * | 2018-07-30 | 2018-12-18 | 佛山科学技术学院 | A kind of disposable safe blood taking needle |
| CN109009162B (en) * | 2018-07-30 | 2023-08-08 | 佛山科学技术学院 | Disposable safety blood taking needle |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015067106A1 (en) | 2015-05-14 |
| CN104623760B (en) | 2019-07-19 |
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Granted publication date: 20190719 Termination date: 20211111 |