TW579300B - Safety syringe for injection pin having butterfly wing member - Google Patents

Abstract

A safety syringe for subcutaneous injection comprises a sleeve having a butterfly wing member with a T-shaped guiding slot; a hollow barrel with a projection on the outer surface and having a front nose; a pin unit fit at the front of the barrel; and an injection tube snugly fitted at near end of the barrel. After use, pull the barrel to cause the projection to slide rearward along the T-shaped guiding slot until the pin is completely received in the sleeve again, thereby preventing a medical worker from being contaminated by microorganisms or blood on pin by accidentally pricking.

Description

579300 V. Description of the invention (l) The present invention refers to a kind of butterfly needle safety device. One is to prevent the butterfly needle needle that has been contaminated after use, and to stab medical care: the third person's butterfly needle safety needle cover device. 、 // 、 In general, when using a traditional butterfly needle, such as the first] 〇 :; remove the front end, the needle sleeve ⑹, so that the needle body will then pull out the wing extraction: attached to the human body (not shown) to be injected Dan pulled out the needle (N), because the needle (n) p # ground the needle back to the original protective needle sleeve ((Heart = two: be careful to stand the main shot of the drip bottle, and the injection time is up to several hours.) The needle slipped out of the blood vessel due to a missing needle, and the needle was occasionally pulled out for re-injection, or the injection felt uncomfortable. The injector and the needle puller leave the human body with a W set back to the original protective needle protector (C) and are bothered; moreover, it is 12 or so, often looking for the original (about 1_ 卩) needle cover, and holding ^ = (C) is the front of the small-diameter needle. During the set-back process, f% of the palm of the hand is set to be contaminated and bumped, and carelessly stabbed 4: Yi, busy, "insufficient, safety during use is at stake The chance of the day is extremely high, so be careful, the hand holding the needle cover may be 'as long as the nursing staff is not infected by the virus; This kind of used = injured by the tip, even the injection needle is bent, that is all necessary equipment: J Butterfly injection needle needle if the injection needle needle is not retracted into the sleeve, the two theta sleeve has used the butterfly High, and retracting the sleeve has used the butterfly process, which takes time and costly to push out of the sleeve, so that the sleeve can still be deliberately re-used with a 2-pin needle, which cannot ensure its use.

6323-9A.ptd $ 5 pages 579300 V. Description of the invention (2) Absolute safety Furthermore, the support tubes after the injection needles of traditional butterfly injection needles are made of soft f, and the butterfly wings are connected to the protective sleeve. Adding safety: sex measures = made of plastic quality, which makes the fork to a considerable limit, near trace, spatial and structural integrity and consistency are difficult to overcome ^ rhyme factor ^ makes it useful Ann settlement. °〗 Problem, it has not been possible for a long time. Therefore, the main purpose of the present invention is that the above-mentioned technology is difficult, and it is to provide a kind of butterfly butterfly injection needle which has been used for contaminated needles. It can quickly have a device to allow a safe needle cover. In the stop groove, make the needle f = = = and lock the butterfly needle to make it safe and practical. It was removed again to ensure that another purpose of the present invention is to raise one position, and to secure the safety needle cover in operation position two; the butterfly needle * full needle set is accidentally punctured during use, and to ensure that it is behind the needle: In order to avoid making the present invention achieve the above-mentioned technical means, including: efficacy, a cover unit adopted by the device, a safety oblique roll, and the safety needle sleeve unit, which are _front = and-needle seat unit ' Among them: The outer periphery of the rear end of the butterfly wing has one or two-the hollow tube body of the butterfly wing '士 ... ί 横向 The horizontal section behind the turning point; Compared with the hollow tube body of Tian Xiao, the rear end of the tube body corresponds to the diameter. Each position is provided with a convex ridge, a stage section, the rear end of the pipe body is larger in diameter: 2: 2 front ends are provided with a smaller diameter eight-k hollow body, and the outer periphery is provided with a 6323-9A.ptd page 6 、 Explanation of the invention (3) Convex part 5 _, on the main shooting private section; 彳, acupuncture is fixed to the small diameter of the front end of the needle base unit. The car can be put on the outer periphery of the needle seat unit, and it is well received. The element chute is moved, the cover unit is removed, and the safety needle cover unit can be fixed in the transverse section of the MT seat chute when the front end of the safety needle cover unit is fixed in the two sections of the needle holder, so that the solid independent butterfly ：：：： The needle is completely covered, and it is composed of S-. It is to understand the characteristics of the invention, the technical means, and the eight- ^, the purpose achieved. Here is a comparison of the present invention. # W 图The detailed description of the formula and figure number is as follows: The car is specific ..., 1 'is followed by the figure number as follows: Butterfly wing part 11 convex part 34 straight part 341 square buckle recess 2 2 5 rear end stop point 22a transverse section 221 Flange 351 Needle tip 31 a Cover unit 1 0 Safety needle cover unit 20 Arc section 340 Arc positioning recess 2 2 4 Step section 3 3 Turning point 22b Back end of the tube 35 Needle unit 3 0 Needle 31 Fixed end 5 1. 7 1, 8 1 Drip catheter connector 7 〇, 8 〇 6323-9A.ptd Page 7 579300 V. Description of the invention (4) Please refer to Figures 1_5 and 2A-2C, which are the first embodiment of the present invention. An exploded perspective view, a perspective view, and a schematic view of motion; in a first preferred embodiment of the present invention, the device includes at least a cover Shu billion yuan, a front end portion sleeved Butterfly 2〇, and a hub unit 11, etc. The safety needle 3〇 jacket unit; wherein:

The safety needle cover unit 20 includes a butterfly wing portion π and a hollow tube body 20, and the butterfly wing portion 11 has a hollow tube body 112 and a wing portion 110 provided below the hollow tube body 112. The front end of the hollow tube body 20 has a small diameter portion 21A, which can be fitted with the hollow tube body 112 of the butterfly wing portion 11, and the rear end of the hollow tube body 20 has a large diameter portion 2 1 B. The large-diameter portion has a long τ-shaped chute 22 on the outer periphery, and the chute 22 includes a front stop point 22a, a rear end turning point 2213, and a transverse section 221. The transverse section 221 is shown in FIG. 2A. , Including an arc-shaped positioning recess 224 formed by the first (left) end two-necked arcuate portions 222_222, and a second (right) end of the two-necked arcuate portions 223 — 223 to form a square buckle recessed portion 225. In addition, for the convenience of the injector to hold the hollow tube body 20 of the present invention, a slip ring 23 is provided on the outer periphery of the large-diameter portion 2 1β. The needle holder single cymbal 30 has a hollow tube body 32. A small diameter step section 33 is provided at the front end for fixing the needle 31, and a rear end 35 of the tube body is provided with a flange 351 at a position corresponding to the diameter. As shown in the figure, a -d convex portion 34 is provided on the outer periphery of the front end of the hollow pipe body 32. One side of the convex portion 34 is an arc portion 340, and the other side is a straight portion 341. Coincidentally, the needle seat 30 can be inserted into the safety needle cover unit 20 and the D-shaped convex portion 3 4 can be placed in the chute 2 2 Φ c t ^, 1 —into the μ * movement in the second period, and is well received. Guide, needle 31 " Queen single 7020 retracts freely, when the D-shaped projection of the needle seat unit 30

579300

When the part 34 is an arc-shaped positioning recess 2 24 (as shown in FIG. 3B) located in the transverse section 221 before the new product is used, the needle unit 31 can be hidden and protected before being used, and can be protected in small A cover body is fixed on the diameter part 2 丨 A: 10, so that the needle tip 31a of the needle 31. is completely covered, and then a separate safety device for the needle is constructed.

Please refer to Figs. 2 and 3A-3C. When injection is to be performed, the lid unit 10 can be lowered. At this time, as shown in Fig. 3B, the center-shaped convex portion 34 of the needle seat unit is located in the positioning recess 224. Then, rotate the needle base unit 30 counterclockwise to move the D-shaped convex portion 34 from the arc-shaped positioning concave portion 224 to the lateral section 221, that is, the D-shaped convex portion 34 is moved from FIG. 3B to FIG. ^ The position ^ -shaped convex portion 34 moves forward in the chute 22 through the transverse section 221 and the turning point 22b. At this time, the needle 31 of the needle unit 30 can protrude from the front end of the safety needle cover unit 20 until the D-shaped convex When the portion 34 is moved to the front stop point 22a, the needle 31 can be completely exposed to form a retractable needle safety device. Because the operation position of the safety needle cover unit 20 held by the hand is always behind the needle 31, no need to Passes the tip 31a of the needle 31; therefore, it is extremely safe to use. -

When the field / main shot is completed, hold the safety needle cover unit 20 with one hand and the anti-slip ring 2 3 with the needle holder unit 30 with one hand. Just reverse the operation, and the d-shaped projection 3 4 can follow the rear end of the slide groove 22. The stop point 22a and the turning point 22b enter the horizontal section 221. At this time, when the safety needle cover unit 20 and the needle seat unit 30 are screwed again in the clockwise direction, the D-shaped convex portion 34 enters the square from the horizontal section 221. As shown in FIG. 3C, the locking recess Deng 225 is locked at the angular constriction μ of the square locking recess 225 due to the straight portion 341 of the D-shaped convex portion.

579300 V. Description of the invention (6) The right side of the plane, so the D-shaped convex portion 34 cannot enter the transverse section 221 again, so that the needle tip 31a of the needle unit 30 is always hidden within the safety needle cover unit 20 to ensure the needle tip 31a No risk of stab wounds. Because, in this process, the operating position of the safety needle cover unit 20 held by the hand is always behind the needle 31, and the needle can pass through the needle; @ 此 ， 完 Ｍ 虞 有 & Injury or suffering ,, The disease is uninfected and extremely safe; this structural feature is the most important feature of the present invention. Please refer to FIG. 4 and FIG. 4A, which are the first use example of the first embodiment of the present invention, that is, the present invention can be implemented in a dripped insertion catheter connector 80, and the rear end flange 351 of the needle seat unit 30 can be It is the mating end of the catheter joint 80. In this case, at this time, the drip injection can be delivered to the needle 31 through the catheter 90 and the catheter connector 80; and can be implemented in the manner shown in the first to the third embodiment of the first embodiment of the present invention: That is, as shown in FIG. 4A, the needle 31 can be stretched freely in the needle cover unit 20. The remaining structural features are generally the same as those of the above embodiment of the present invention, and the description is omitted. Please refer to FIG. 5 This is the second use example of the first embodiment of the present invention, that is, the present invention can be implemented in another type of screw-in catheter 70 for drip application, that is, the flange 351 at the rear end of the needle seat unit 30 can be screwed to the catheter, The internal thread portion 71 is integrated into one body. At this time, the drip is delivered to the needle 31 through the catheter 90 and the catheter joint 70, and can be implemented as shown in Figures 3A to 3C of the first embodiment. That is, as shown in Fig. 58, the needle 31 can be extended and retracted from # in the needle cover 2G. The remaining structural features are substantially the same as those of the first embodiment of the present invention described above, and the description is omitted. The second embodiment of the present invention, As shown in Figures 6 to 9 '

579300 V. Description of the invention (7) 2 S ′ 丨: The methods are all different from the first embodiment, the difference is that the first τ-shaped chute 22 which is also placed on the outer periphery of the safety needle sleeve unit 20 is changed = A T-shaped chute 22.Q of a stopper 227. In order to further ensure that Anyuan 20 is absolutely safe in use, the present invention retracts inward from the needle seat ㈣ 趑 τ η used> dyeable needle 31 After the system was made, it was prevented from being removed again. Person: 51 chute 22 (the horizontal section 221Q of 3, the left section is made with a positioning recess 224Q that closely matches the convex section 34, and the right section is made with a stop through a stop 227 Then enter the tight-fitting locking square groove 225Q. Since the safety needle sleeve unit ^ is injection molded from plastic, in design and choice of materials, the stopper 227 can be engraved to have good elasticity and toughness to make convexity After the part 34 is buckled into the locking square groove 225Q from its bottom, the strength of the limiting part 227 is still maintained. The limiting part 227 is a thin strip element and the body material of the safety needle cover unit 20 is integrated into the body as shown in FIG. To make it easy to operate, as shown in Figures 8 and 9, the top of the convex portion 34 is made from When the top surface is inclined to the right to facilitate the operation of the needle cover unit 30, the convex portion 34 easily passes over the restricting portion 227 and enters the locking square groove 225Q. However, once the convex portion 34Q enters the square groove 22 5Q, it is blocked by the card. In the square groove 225Q, as shown in FIG. 9, since the left side of the top surface of the convex portion 34Q is higher than the bottom edge of the limit portion 22 7, the convex portion 34Q is limited to stop once it enters the square groove 225Q. It is difficult for the convex part 34Q to slide out of the restricting part 227 again. In this way, once the needle 31 of the needle seat unit 30 is retracted into the needle sleeve unit 20 and the convex part 34Q is clicked into the square groove 2 25Q It will not only hurt the medical staff or other people who contact the needle tube, but also make it impossible for the butterfly needle to be used again. This section is for the poor people in low-developed countries to use the used needle again. Eradication, which is the most important aspect of this invention

6323-9A.ptd Page 11 V. Description of the invention (8) Where to create forbearance, I would like to explain it together. The same components or components of an embodiment may be compared with each other. To simplify the description, as for the second embodiment and the second component of the present invention, the reference numbers are marked differently, and for the sake of clarity, the relevant description is omitted. In addition, the convex portion 34 of the above-mentioned embodiment of the present invention is provided on the outer periphery of the needle base unit 3 0, and the T-slot 22 is provided on the outer periphery of the needle hub unit 2 0. When the material and space form of 30 allows, it is also possible to make convex: single St :; unit 2] within f, and change the T-shaped chute 22 to the outer periphery of the second heart of the needle to achieve the same as the above embodiment. Efficacy and item 34, in the needle: the T-shaped slide groove 22 and the convex and groove in the above embodiment, in contrast, the two T-shaped slide units 30 in the corresponding positions of the needle seat unit 30 are in the needle cover unit 2n. There are also two convex parts on the circumference, so that the protection scope of the present invention is: within 2 extensions ;: == for stability ', all of which belong to = the main creative spirit of the butterfly needle female = Shan Wu, And the back of the needle unit to avoid the use of ten middlemen; =: = The operating position is located at the needle without changing any of the original to ensure its safety; therefore, it can be directly placed on the original connection fitting structure. Can have a wide range of applicability, and the characteristics of the catheter connector and the space pattern formed by it are based on the structure; V. Description of the invention (9) The locking hand square groove or the square buckle concave portion to the convex portion and the guide groove and the convex portion in the guide groove) Shao is a special example of the above-mentioned preferred embodiment of the present invention. It is not limited to this, there are many other equivalent means that can be used. To sum up, the present invention can be the simplest straight without changing the principle of any original injection fittings and connection fittings and structures; on the sleeve: mt or drip pipe, it is obvious that this piece has fully met the ^ Ming patent The application requirements of 'love to file a patent in accordance with the law grant the patent in this case, in order to highlight the patent law reward is the most desired. The legislative spirit of Hui Man invention,

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579300 Brief Description of Drawings Figure 1 is a schematic perspective view of the first preferred embodiment of the present invention; Figure 2 is a schematic perspective exploded view of the first preferred embodiment of the present invention; Figures 2A to 2B are the second views 3A to 3C are explanatory diagrams of the first to third operating states of the first preferred embodiment of the present invention; and FIG. 4 is a diagram showing the first preferred embodiment of the present invention to be fitted with an intubated catheter Partial cross-sectional plan view; FIG. 4A is a cross-sectional operation view of the use state of FIG. 4; FIG. 5 is a schematic plan view of a partial cross-section of an external screw-type catheter connected to the first embodiment of the present invention; The figure is a cross-sectional action diagram of the use state of Fig. 5. Fig. 6 is a schematic perspective view of the second preferred embodiment of the present invention. Figs. 7A to 7C are first to third of the second preferred embodiment of the present invention. Figure 8 illustrates the action of the cross section from Figure 7A to Figure 8-8; Figure 9 illustrates the action from section 7C to Figure 9-9; Figure 10 shows the Xi'an butterfly needle Stereo schematic.

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Claims (1)

Sixth, the scope of patent application: Please refer to item 1 of the patent scope, "Butterfly Needle Safety Needle ❹ ㈣ Ann ;: Sleeve; Needle = Yuan's convex part-Steps include -d type I ,, buckle the concave part; when the; all: The sleeve transverse section of the sleeve guide single groove further includes a square full needle sleeve unit which is pulled forward, and when the outer periphery of the needle seat unit, the d-shaped convex part of the u guide groove of the safety needle sleeve unit can be along The D-shaped convex of the needle seat unit :: two or two buckle into the square buckle recess, and the needle at the front of the seat unit is inside the square buckle recess. Inside the safety needle cover unit. Set "6, where the convex; T1 square shape ^" ". 凊 凊 butterfly needle safety needle set worker and needle base unit to increase force: guide 4 pairs with full needle 7 Early: ΐ: reciprocating material transfer, more stable. Early Yuan 7: "Setting" in the scope of the patent scope of 7 · Russian Patent, where the horizontal section includes the safety needle cover skirt and one on the second end. Pp Position the concave in the first square. Restriction part and the locking square groove immediately adjacent to the restriction part 8 · For example, the "w-call" in the scope of patent application No. 7; wherein, the restriction part is with the needle cover single needle safety needle set 9. If the scope of patent application item 5 "Several outer circumferences are integrated into one. Set", where the square convex # 4 butterfly needle safety needle set]. · If you apply for the second inclined surface of the patent. "" Where "the needle seat unit 1-needle safety needle set 卩 1 step includes-square convex part, 6323-9A.ptd page 16 579300 6. The scope of the patent application and the τ-type guide groove of the safety needle sleeve unit Cross section forward section and a locking square groove immediately adjacent to the limit section; Apricot sacrifice-limit square convex section can follow it ;: pull forward, the bottom of the limit section of the needle seat unit and buckle τ The horizontal section of the guide groove passes over the lower jh square groove, and the Chuan oblique temple is just embedded in the square convex of the locking square birch Λ, ^ οσ ^, 13, which makes the front end of the needle seat early. Needle II @ Needle 1 is held in the safety needle cover unit. 6323-9A.ptd as early as 7L page 17