CN1273203C

CN1273203C - Butterfly needle safety needle sleeve device

Info

Publication number: CN1273203C
Application number: CN 02125746
Authority: CN
Inventors: 汪贤宗
Original assignee: Hongfu Science & Technology Co Ltd
Current assignee: Shanghai Jinta Medical Co ltd
Priority date: 2002-08-15
Filing date: 2002-08-15
Publication date: 2006-09-06
Anticipated expiration: 2022-08-15
Also published as: CN1475281A

Abstract

The present invention relates to a safety needle sleeve device for a butterfly needle. The device comprises a cover unit, a safety needle sleeve unit, a needle seat unit, etc. at least, wherein the safety needle sleeve unit is a hollow tube body whose front lower end is provided with a butterfly wing part, and the periphery is provided with a T-typed guide slot; the needle seat unit is a hollow tube body whose prophetical front end is provided with a convex part, different traditional injection tube joints can be sheathed on the rear end, and the front end is provided with a stage section which can be used for the fixation of the needle head unit. When the needle seat unit is sheathed in the safety needle sleeve unit, the convex part can exactly move in a T-typed guide slot, and is well guided; the needle seat unit with a needle head can be folded into the safety needle sleeve unit after being used, so the safety needle sleeve device for a butterfly needle is formed; an operation position is also arranged on the rear of the needle head in order to ensure use safety.

Description

Butterfly needle safety needle sleeve device

One. technical field

The invention provides a kind of butterfly needle safety needle sleeve device, refer to a kind of prevent to use the butterfly pin syringe needle that has been polluted later, the butterfly needle safety needle sleeve device of stabbing medical personnel or other people especially.

Two. background technology

General traditional butterfly pin is using, as shown in figure 10, the protection needle guard C of butterfly pin front end is taken off, make syringe needle N) thrust human body and inject, and make butterfly alar part B be attached on the human body to be injected the finishing of (not shown) again syringe needle N being extracted out, because syringe needle N is polluted, must carefully syringe needle N be reinstalled in the former protection needle guard C, right general butterfly pin is used in the injection of a drop bottle, and reach a few hours inject time, therebetween or syringe needle displacement arranged, dropped stitch makes syringe needle skid off blood vessel and makes the patient not feel well, need extract syringe needle N midway and inject again, or injects to finish and must pull out the pin program, polluted already after injection because of syringe needle again, must recover former protection needle guard C when extracting human body, perhaps the person is not same people and former injector is with pulling out the pin, often will seek former protection needle guard C; Moreover; protection needle guard C is the needle guard of internal diameter tiny (about 1mm is following); and the finger of holding former needle guard is affirmed in the place ahead that suffers contaminated pinhead; often to hold the probability that needle guard points in unexpectedly stinging high because of tired, busy, luminance shortage, collision, carelessness in recovering process; be with; in use, safety is very important.Therefore, as long as the nursing staff is careless slightly, the hand of gripping needle guard promptly may be subjected to the tip of syringe needle and stab, even is subjected to the infection of virus; Unless this butterfly entry needle syringe needle of having used is with the injection needle bending, all need the sleeve order of the vertical chute of apparatus to use in the butterfly entry needle syringe needle retraction sleeve, not only operating process is time-consuming for this, expend the cost height, and used butterfly entry needle syringe needle still can painstakingly be released outside the sleeve once again in the retraction sleeve, make this sleeve capable, can't guarantee the being perfectly safe property that it uses with illusory.

Moreover; because the build of traditional butterfly entry needle is small and exquisite; and the support pipe fitting behind the butterfly wing and the entry needle is made by the high plastic material of flexibility; when making people on protection sleeve, add security measures; spatially reach on the structure and be severely limited; thereby make its safety used and practicality all be difficult to the problem that overcomes, can't solve for a long time always.

Three. summary of the invention

At the defective in the above-mentioned technology of existing traditional butterfly entry needle, the object of the present invention is to provide a kind of butterfly needle safety needle sleeve device, allow and used the syringe needle that has been polluted, can quickly and effectively the syringe needle retraction be limited in the block groove of safe needle guard, syringe needle can't be moved out of once again, to guarantee safety and the practicality after the butterfly pin uses.

Another object of the present invention is to provide a kind of butterfly needle safety needle sleeve device, safety needle guard operating position can be moved the rear of establishing to syringe needle, stab accidentally with in avoiding using, and guarantee its safety.

For achieving the above object, the technical solution used in the present invention is as follows:

A kind of butterfly needle safety needle sleeve device comprises a cover unit, a safe needle guard unit and a needle stand unit,

This safe needle guard unit is the hollow tube that a front end has a butterfly wing, and its butterfly wing rear end periphery has a T type chute, and this T type chute comprises that a front end block point, a rear end turning point and are located at the traversing section at turning point rear;

This needle stand unit, it is a tiny hollow tube, this body rear end respectively is provided with a flange on the diameter opposite position, this body front end is provided with a class's section than path, the front end periphery of big footpath, this body rear end hollow tube is provided with a protuberance, this syringe needle be fixed in this needle stand unit front end than on the path class section;

This safe needle guard unit can be placed in the unitary periphery of needle stand, and this needle stand unit protuberance just can move in the unitary T type of this safe needle guard chute, and be subjected to good guiding, and this safe needle guard unit can be in the solid cover unit of its front end sleeve, when this protuberance button terminates in the traversing section of T type chute, make the syringe needle that is fixed in this needle stand unit front end be subjected to hiding completely, thereby constitute the safety device of butterfly injection needle independently.

Use the present invention's's (utility model) beneficial effect to be: in the time of in the needle stand unit is inserted in safe needle guard unit, protuberance just can move in T type chute, and is subjected to good guiding; The needle stand unit of tool syringe needle can be after using, and in retraction safety needle guard unit, constituting a butterfly needle safety needle sleeve device, and makes operating position be positioned at the rear of syringe needle, with the safety of guaranteeing that it uses.

Four. description of drawings

For further understanding feature of the present invention, technological means and the concrete function of being reached, purpose, enumerate now of the present invention than specific embodiment, continue describe in detail with graphic, figure number as after:

Graphic being described as follows:

Fig. 1 is the schematic perspective view of the present invention's first preferred embodiment;

Fig. 2 is the perspective exploded view of the present invention's first preferred embodiment;

Fig. 2 A～2B is the local amplification view of Fig. 2;

Fig. 3 A～3C is first to the 3rd operating state key diagram of the present invention's first preferred embodiment;

The part section plane sketch map of plug-in type conduit in Fig. 4 joins for the present invention's first preferred embodiment connects;

Fig. 4 A is the section action diagram of the user mode of 4 figure;

Fig. 5 joins the outer part section plane sketch map that screws togather the formula conduit for first embodiment of the invention connects;

Fig. 5 A is the section action diagram of the user mode of Fig. 5;

Fig. 6 is the schematic perspective view of the present invention's second preferred embodiment;

Fig. 7 A～7C is first to the 3rd operating state key diagram of the present invention's second preferred embodiment;

Fig. 8 is the section action diagram of 8-8 line in Fig. 7 A;

Fig. 9 is the section action diagram of 9-9 line in Fig. 7 C;

Figure 10 is the floor map of existing butterfly pin.

Five. the specific embodiment

Shown in Fig. 1-5 and 2A-2C, be perspective exploded view, axonometric chart and the action sketch map of first embodiment of the invention; In the present invention's first preferred embodiment, this device comprises safe needle guard unit 20, and the needle stand unit 30 etc. of a cover unit 10, the sheathed butterfly alar part 11 of a front end at least; Wherein:

This safe needle guard unit 20, comprise a butterfly alar part 11 and a hollow tube 20, this butterfly alar part 11 has the alar part 110 that a hollow tube 112 and is located at hollow tube 112 belows, these hollow tube 20 front ends have a minor diameter part 21A, can be nested with the hollow tube 112 of butterfly alar part 11 and lump together, these hollow tube 20 rear ends have a large-diameter portion 21B, this large-diameter portion periphery has a long T type chute 22, and chute 22 comprises a front end block point 22a, an one rear end turning point 22b and a traversing section 221, wherein, this traversing section 221, shown in Fig. 2 A, comprise by forming an arc location indentations 224 after the end two reducing curved portions 222-222 of first (left side), after two reducing horn-like part 223-223 of second (right side) end, form a square button again and end recess 225.For making things convenient for the injector to grip hollow tube 20 of the present invention, be provided with an anti-slip ring 23 in large-diameter portion 21B periphery again in addition.

This needle stand unit 30, has a hollow tube 32, its front end be provided with one than class's section 33 of path in order to fixed needle 31, body rear end 35 respectively is provided with a flange 351 on the diameter opposite position, the front end periphery of this hollow tube 32 is provided with a D shape protuberance 34, shown in Fig. 2 B, a side of this D shape protuberance 34 is an arc sections 340, and opposite side is a flat part 341.

Needle stand unit 30 can be inserted in the safe needle guard unit 20; and D shape protuberance 34 just can move in chute 22; and be subjected to good guiding; syringe needle 31 can be capable of expansion and contraction in safety needle guard unit 20; when the D of needle stand unit 30 shape protuberance 34 is positioned at the arc location indentations 224 (shown in Fig. 3 B) of traversing section 221 in system before new product is to be used; can make needle unit 31 before not using, be hidden in interior and protected; and can go up the solid cover unit 10 of cover in minor diameter part 21A; and the needle point 31a that makes syringe needle 31 is subjected to hiding completely, and then constitutes a needle safety apparatus independently.

Shown in Fig. 2 and Fig. 3 A-3C, when desire is implemented injection, can take off cover unit 10 earlier, at this moment, shown in Fig. 3 B, the D type protuberance 34 of needle stand unit 30 is in the location indentations 224, again with counter-clockwise direction turn needle stand unit 30, and D type protuberance 34 is moved to traversing section 221 from arc location indentations 224, be that D type protuberance 34 moves to the position shown in Fig. 3 A by Fig. 3 B, D type protuberance 34 is via traversing section 221, turning point 22b and in chute 22, moving forward, at this moment, the syringe needle 31 of needle unit 30 can stretch out when D type protuberance 34 moves to front end block point 22a from the front end of safe needle guard unit 20, and syringe needle 31 can expose fully, and forms a telescopic needle safety apparatus; Because the operating position that hand grips safe needle guard unit 20 is positioned at the rear of syringe needle 31 all the time, need not needle point 31a through syringe needle 31; Therefore, has safety in the use.

And when injection finishes, grip the anti-slip ring 23 of safe needle guard unit 20 on the other hand, grip needle stand unit 30 on the other hand, only need contrary operation, D type protuberance 34 can be held block point 22a after chute 22, turning point 22b and enter traversing section 221, at this moment, when safe needle guard unit 20 and needle stand unit 30 are screwed once again in a clockwise direction, D type protuberance 34 just enters square the button by traversing section 221 to be ended in the recess 225, shown in Fig. 3 C, at this moment, because the flat part 341 of D type protuberance 34 just in time is limited to square right side, plane of buckleing the dihedral choke 223-223 that ends recess 225, so can't make D type protuberance 34 enter traversing section 221 once again,, stab to guarantee that needle point 31a does not have so that the needle point 31a of needle unit 30 is hidden within the safe needle guard unit 20 forever.Because in this process, the operating position that hand grips safe needle guard unit 20 also is positioned at the rear of syringe needle 31 all the time, need not the needle point 31a through syringe needle 31; Therefore, do not have the facts of stabbing or be subjected to viral infection fully and take place, and have safety; This architectural feature, real is main characteristic of the present invention place.

Shown in Fig. 4 and Fig. 4 A, for first of first embodiment of the invention makes use-case, promptly invention can be implemented in the interpolation type catheter adapter 80 of drop, promptly this needle stand unit 30 back end boss 351 can be in 81 of the mating sides of catheter adapter 80 and connect, at this moment, fluid infusion liquid just can be via conduit 90 and catheter adapter 80 and is transported to syringe needle 31; And can the mode shown in Fig. 3 A to Fig. 3 C of above-mentioned first embodiment of the invention implement, promptly shown in Fig. 4 A, syringe needle 31 can be capable of expansion and contraction in needle guard unit 20.Remaining architectural feature is all identical with the invention described above first embodiment substantially, and relevant explanation is omitted.

As shown in Figure 5, for second of first embodiment of the invention makes use-case, what invention can be implemented in promptly that another kind of drop uses screws togather formula catheter adapter 70 outward, promptly in the internal thread part 71 of the catheter adapter 70 that end boss 351 can be screwed together in behind this needle stand unit 30, be one and engage, at this moment, fluid infusion liquid just can be via conduit 90 and catheter adapter 70 and is transported to syringe needle 31, and can the mode shown in Fig. 3 A to Fig. 3 C of above-mentioned first embodiment of the invention implement, promptly shown in Fig. 5 A, syringe needle 31 can be capable of expansion and contraction in needle guard unit 20.Remaining architectural feature is identical with the invention described above first embodiment substantially, and relevant explanation is omitted.

Second embodiment of the invention, extremely shown in Figure 9 as Fig. 6, its device and using method substantially is all identical with first embodiment, institute's difference is that the T type chute 22 that first embodiment is located at safe needle guard unit 20 peripheries changes over the T type chute 22Q with the portion of placing restrictions on 227, the present invention is perfectly safe in the use in order further to guarantee safe needle guard unit 20, allow used contaminated pinhead 31 during in needle stand unit 30 toward interior retraction after blocking, stop to be moved out of once again, special traversing section 221Q left side section with T type chute 22Q is made to be had and protuberance 34 friction tight location indentations 224Q, right section is made to be had one and ends square groove 225Q via entering friction tight card behind the block of placing restrictions on portion 227 again, because safe needle guard unit 20 is the plastics ejection formation, reach in design in the selection of material, can painstakingly make the portion of placing restrictions on 227 have favorable elasticity and obdurability, with make protuberance 34 by its below buckle into card only in the square groove 225Q after, still keep the intensity place restrictions on portion 227, the bulk material of placing restrictions on portion 227 as seen from the figure and be a slice assembly and safe needle guard unit 20 fuses.For the purpose of easy on making operation, as Fig. 8 and shown in Figure 9, the sloped top face towards the right side from a left side is made at the top of protuberance 34Q, during with handled easily needle stand unit 30, protuberance 34Q is easy to cross the portion of placing restrictions on 227 and enters card and end in the square groove 225Q, in case right protuberance 34Q is promptly ended in the square groove 225Q in blocking by block after entering square groove 225Q, as shown in Figure 9, because it is a lot of that the end face of protuberance 34Q left side is higher than the root edge height of the portion of placing restrictions on 227, so in a single day protuberance 34Q enters card only behind the square groove 225Q, placed restrictions on stopping of portion 227, exhausted difficult the skidding off outside the portion of placing restrictions on 227 of protuberance 34Q, so, the syringe needle 31 of needle stand unit 30, in case in the retraction needle guard unit 20 and after making protuberance 34Q snap in square groove 225Q, not only can not injure medical matters or other personnel of contact needle tubing again, and the butterfly pin can not be used once again, so just prevent that some people from cleaning utilization once again with exhausted syringe needle effectively, this is the topmost intention of the present invention place, explanation in the lump sincerely.

Spare part or the parts identical with first embodiment as for second embodiment of the invention all indicate reference number inequality, can support mutual contrast, and for the purpose of simplified illustration, relevant explanation is omitted.

In addition, the above embodiments protuberance 34 of the present invention is located at the periphery of needle stand unit 30, and T type chute 22 is located on the periphery of needle guard unit 20, certainly, when if the material of needle stand unit 30 and spatial shape allow, also protuberance 34 can be changed the inwall that is located at needle guard unit 20, and T type chute 22 is changed the periphery that is located at needle stand unit 30, to reach effect and purpose same as the previously described embodiments.

Where necessary, T type chute 22 and protuberance 34 in the foregoing description, under the structural strength of needle guard unit 20 and needle stand unit 30 allows, the twice T type chute of diameter opposite position also can be set in the periphery of needle guard unit 20, relatively, on the periphery of needle stand unit 30, also establish two protuberances, make needle stand unit 30 in needle guard unit 20 to slide guiding more stable.

Intend the lay special stress on explanation around here, it is a kind of by cover unit, safe needle guard unit, and the butterfly needle safety apparatus that constituted such as needle unit to be the topmost intention spirit of the present invention is to provide, and make operating position be positioned at the rear of syringe needle, stab accidentally with in avoiding using, and guarantee its safety; Therefore, change under the principle of any original injection cylinder and drop connection fittings structure need not, can directly overlap in the catheter adapter that is fixed in different injection cylinders or drop, and can have extensive applicability, and operation is very easy; Its architectural feature and the space kenel that is constituted be real to be intention of the present invention institute distinctive feature.

The locking means of the protuberance to protuberance and chute and the chute (i.e. card end square groove or square the button ended recess) are the special case that explanation is lifted in the above-mentioned preferred embodiment of the present invention.In sum, the present invention need not to change under the principle of any original injection accessory and connection fittings structure, promptly can be fixed on different injection cylinders or the drop fluid catheter by the direct cover of the simplest means.

Claims

1. a butterfly needle safety needle sleeve device comprises a cover unit, a safe needle guard unit and a needle stand unit, it is characterized in that:

2. butterfly needle safety needle sleeve device according to claim 1, it is characterized in that, this traversing section comprises one by the arc location indentations that is formed on first end after the two reducing curved portions, and one ends recess by the square button that is formed on second end after the two reducing horn-like parts.

3. butterfly needle safety needle sleeve device according to claim 1 is characterized in that, this protuberance is a D shape protuberance, and this D shape protuberance comprises that a side is that an arc sections and opposite side are a flat part.

4. butterfly needle safety needle sleeve device according to claim 1 is characterized in that, the unitary protuberance of this needle stand is a D type protuberance, ends recess and the traversing section of the unitary T type of this safe needle guard chute further comprises square a button; When this safe needle guard unit is placed in needle stand unit periphery, when this safe needle guard unit spurs forward, the unitary D type of this needle stand protuberance can buckle into square the button along the traversing section of the unitary T type of this safe needle guard chute to be ended in the recess, and make the unitary D type of needle stand protuberance just in time embedding terminate in square the button and end in the recess, the needle point of the needle unit of needle stand unit front end is stopped in safety needle guard unit.

5. butterfly needle safety needle sleeve device according to claim 1 is characterized in that, this protuberance is a square protuberance.

6. butterfly needle safety needle sleeve device according to claim 1, it is characterized in that this protuberance and chute can be separately positioned on safe needle guard unit and the needle stand unit in pairs to increase guide function, when safe needle guard unit is moved back and forth, have more stability on the needle stand unit.

7. butterfly needle safety needle sleeve device according to claim 1 is characterized in that, this traversing section comprises that one is located at the square location indentations of first end, and one is located at the card that the portion that places restrictions on second end and next-door neighbour place restrictions on portion and ends square groove.

8. butterfly needle safety needle sleeve device according to claim 7 is characterized in that, this places restrictions on portion and the unitary periphery of needle guard fuses.

9. butterfly needle safety needle sleeve device according to claim 5 is characterized in that, the end face system of this square protuberance is the inclined plane.

10. butterfly needle safety needle sleeve device according to claim 1 is characterized in that, the unitary protuberance of this needle stand is a square protuberance, and the traversing section of the unitary T type of this safe needle guard chute comprises that further the portion of placing restrictions on and a card that is close to the portion that places restrictions on end square groove; When this safe needle guard unit is placed in needle stand unit periphery, when this safe needle guard unit spurs forward, the unitary square protuberance of this needle stand can be crossed the bottom of the portion of placing restrictions on and buckles into card and end in the square groove along the traversing section of the unitary T type of this safe needle guard chute, and make the unitary square protuberance of needle stand just in time embedding terminate in card and end in the square groove, the needle point of the needle unit of needle stand unit front end is stopped in safety needle guard unit.