WO2014108027A1 - 安全静脉留置针 - Google Patents

安全静脉留置针 Download PDF

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Publication number
WO2014108027A1
WO2014108027A1 PCT/CN2013/090485 CN2013090485W WO2014108027A1 WO 2014108027 A1 WO2014108027 A1 WO 2014108027A1 CN 2013090485 W CN2013090485 W CN 2013090485W WO 2014108027 A1 WO2014108027 A1 WO 2014108027A1
Authority
WO
WIPO (PCT)
Prior art keywords
needle
seat
pushing
indwelling
hole
Prior art date
Application number
PCT/CN2013/090485
Other languages
English (en)
French (fr)
Inventor
李志云
Original Assignee
江苏磐宇科技有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 江苏磐宇科技有限公司 filed Critical 江苏磐宇科技有限公司
Priority to MX2015008960A priority Critical patent/MX2015008960A/es
Priority to JP2015551966A priority patent/JP2016506282A/ja
Priority to BR112015016776A priority patent/BR112015016776A2/pt
Priority to EP13870532.2A priority patent/EP2944346A4/en
Publication of WO2014108027A1 publication Critical patent/WO2014108027A1/zh

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Classifications

    • 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
    • A61M5/162—Needle sets, i.e. connections by puncture between reservoir and tube ; Connections between reservoir and tube
    • A61M5/1626—Needle protectors therefor
    • 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
    • A61M2005/1585—Needle inserters
    • 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
    • A61M2005/1587—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body suitable for being connected to an infusion line after insertion into a patient

Definitions

  • the invention relates to a safe intravenous indwelling needle, in particular to a venous indwelling needle for preventing needle bruising, so as to avoid the risk of accidental bruising of the wearing needle by the medical staff.
  • intravenous indwelling needles are usually used for auxiliary injection to avoid the pain caused by multiple injections.
  • FIG. 1 The exploded view of the existing venous indwelling needle. As shown in the figure, intravenous indwelling needle
  • the 100 includes an indwelling hub 11 and a piercing pin 13.
  • the indwelling tube 111 is disposed at the front end of the indwelling needle holder 11, and a shunt tube 113 is connected to the side wall.
  • the shunt tube 113 is sleeved with an infusion tube 12.
  • the infusion tube 12 serves as a passage for drug injection or blood outflow, and is provided with a joint portion 121 for fitting a tube, a tube or a container for receiving a medicament or blood.
  • the needle body of the piercing needle 13 is pierceable in the indwelling needle hub 11 and a part of the needle body is exposed to the front end of the indwelling tube 111. Further, before the intravenous indwelling needle 100 is not used, a needle sleeve is placed over the front end of the indwelling needle hub 11 to cover the indwelling tube 111 and the piercing needle 13 therethrough.
  • the medical staff can remove the needle sleeve so that the indwelling tube 111 at the front end of the indwelling needle holder 11 and the piercing needle 13 therethrough are exposed.
  • the piercing needle 13 will lead the indwelling tube 111 into the veins of the human body.
  • the drug can also be introduced into the human body via the infusion tube 12, the shunt tube 113, and the indwelling tube 111.
  • the present invention will provide a venous indwelling needle for preventing needle bruising, which can prevent the medical staff from being injured by the needle when recovering the needle, thereby reducing the risk of infection of the medical staff by needle stick injury.
  • An object of the present invention is to provide a safe intravenous indwelling needle comprising an indwelling needle holder fixed with an indwelling tube, a protective seat, a piercing needle seat fixed with a piercing needle, and an intrinsic pullback
  • the pushing seat of the piece, the pushing seat can slide back and forth on the protection seat; before the threading procedure, the pushing seat is pushed forward and the drawing piece is sleeved on the piercing needle seat, and the pulling piece is sleeved on the piercing needle
  • After the seat use the piercing needle on the needle holder to lead the indwelling tube to enter the human vein; after completing the piercing procedure, push the pusher seat backwards and pull the
  • Another object of the present invention is to provide a safety vein indwelling needle, wherein a needle receiving portion is disposed in the protective seat, and at least one groove is formed on a sidewall of the front end inner edge of the needle receiving portion;
  • the lever action is generated between the back pumping member and the needle insertion seat to force the needle to be inserted into the groove of the needle receiving portion when the needle is retracted to the protection seat, thereby reducing the needle insertion again.
  • Another object of the present invention is to provide a safety venous indwelling needle, wherein a rear end of the protective seat is provided with a spring assembly, and the pushing seat is pushed backward by the pushing member to press and compress the spring assembly, and after the pushing member is released
  • the rebounding thrust of the spring assembly pushes the front of the needle holder so that the needle of the piercing needle on the needle holder can be stably pushed forward to the depth of the groove of the needle receiving portion, and the insertion of the needle is increased.
  • the present invention provides a safety venous indwelling needle, comprising: an indwelling needle seat, a through hole is disposed in a center thereof, and a shunt tube communicating with the through hole is disposed on the side wall, wherein the through hole is disposed
  • the front end is fixed with an indwelling tube exposed outside the indwelling needle seat; a protective seat having a needle receiving portion at the front end and a circular arc member at the rear end, the protective seat being engaged with the through hole of the indwelling needle seat;
  • the needle holder has a front end inserted into the needle, and a rear end is provided with a first sleeve portion.
  • the needle passes through a front end hole of the center of the protection body.
  • the through hole of the indwelling needle holder and the indwelling tube are exposed from the front end of the indwelling tube;
  • a back pumping piece is provided with a second sleeve portion at the front end thereof;
  • a pushing seat is a hollow tube body, and the tube body is disposed at the periphery thereof
  • a pushing member is embedded in the center of the pipe body, and a circular arc member is disposed between the periphery of the pipe body and the center of the pipe body, and the pushing seat is pushed on the arc piece of the protection seat by the pushing action of the pushing member Front and rear sliding, when pushing the piece forward
  • the second sleeve portion of the pullback piece and the first socket portion of the needle piercing needle seat are sleeved with each other, and when the pusher member is pushed backward, the piercing needle seat that is sleeved together with
  • the first socket portion is a groove structure
  • the second socket portion is a bump portion.
  • the inner side wall of the first socket portion is provided with a convex surface and a thin surface
  • the other inner side wall portion is provided with a thick surface.
  • a center of the pipe body of the push seat is provided with a circular hole, and a circular arc hole is arranged between the outer periphery of the pipe body and the round hole, and the returning piece is embedded in the round hole, and the arc piece of the protection seat Wear through the arc hole.
  • the side wall of the front end of the needle receiving portion is formed with at least one groove.
  • a bevel is formed between the groove and the front end hole.
  • a spring assembly is further disposed on the rear end of the protection seat, and the pusher is pushed backward by the pusher to press and compress the spring assembly, and after the pusher is released, The repulsive force of the spring assembly pushes the pusher seat, the pullback member and the piercing needle seat so that the needle of the piercing needle on the piercing needle seat is placed deep in the groove.
  • the spring assembly includes a pressing member, a spring member and a receiving seat.
  • the pressing member and the spring member are received in the receiving seat, and the spring assembly is assembled to the protective seat by using the receiving seat. Above the back end of the mouth.
  • a finger-shaped pushing portion is disposed above the pushing member, and a pair of wings having a sliding-stop pattern are disposed on both sides.
  • the indwelling needle hub further includes an isolation plug disposed at a rear end of the intersection of the through hole and the shunt tube, and the piercing pin passes through the isolation plug to pass through the through hole.
  • a U-shaped blocking portion is disposed on a front end of the protection seat, and a part of the tubular body of the pushing seat is oppositely provided with a U-shaped notch, and a marking curve is disposed on a rear end of the arc-shaped member of the protection seat.
  • Figure 1 is an exploded perspective view of a conventional indwelling needle
  • Figure 2 is a perspective exploded view of the safe intravenous indwelling needle of the present invention.
  • Figure 3 is a cross-sectional structural exploded view of the safe intravenous indwelling needle of the present invention
  • Figure 4 is a perspective view of a three-dimensional structure of a safe intravenous indwelling needle of the present invention
  • Figure 5 is a cross-sectional structural combination view of the safe intravenous indwelling needle of the present invention.
  • Figure 6 is a perspective enlarged view of a partial structure of the protective seat of the present invention.
  • FIG. 7 is a perspective structural view, a plan view, a side view, a cross-sectional view of the A-A' direction structure, and a cross-sectional view of the B-B' direction structure of the pusher seat of the present invention
  • Figure 8 is an enlarged view of the partial structure of Figure 5 of the present invention.
  • Figure 9 is a cross-sectional structural exploded view of the pushing seat of the safe intravenous indwelling needle of the present invention
  • Figure 10 is an enlarged view of the partial structure of Figure 9 of the present invention
  • Fig. 11 is a cross-sectional structural exploded view of the push seat of the safe intravenous indwelling needle of the present invention
  • Fig. 12 is an enlarged view of the partial structure of Fig. 11 of the present invention.
  • 2413 refers to the push part 243 round hole 2431 first fitting part 244 notch
  • the venous indwelling needle 200 includes an indwelling needle hub 21, a protective seat 22, a piercing needle hub 23, a pusher seat 24, and a back pumping member 25.
  • the center of the indwelling needle holder 21 is provided with a through hole 212, and a shunt tube 213 communicating with the through hole 212 is disposed on the side wall.
  • the shunt tube 213 is provided with an infusion tube 215 which will serve as a passage for the medicament to be injected or the blood to flow out.
  • the front end of the through hole 212 is fixed with an indwelling tube 211 exposed outside the indwelling needle holder 21, and the rear end is an opening.
  • the front end of the protection seat 22 is provided with a needle receiving portion 221 of a hollow tube body, a front end hole 223 is formed at the center of the front end, and a circular arc member 222 is formed at the rear end.
  • the front end of the guard seat 22 can also be directly engaged in the rear end opening of the indwelling hub 21.
  • a first card solid 2120 is disposed on the inner edge of the rear end opening of the indwelling needle holder 21, and a second card solid 2230 is disposed in the outer periphery of the front end hole 223 of the protection seat 22,
  • the indwelling needle hub 21 and the protective seat 22 are stably joined by the engagement of the first card solid 2120 and the second card solid 2230 (for example, the convex portions and the concave portions opposed to each other).
  • the front end of the needle holder 23 is inserted into the needle 231.
  • the threading needle 231 will sequentially pass through the front end hole 223 of the protection seat 22, the through hole 212 of the indwelling needle holder 21, and the indwelling tube 211. It is exposed from the front end of the indwelling tube 211.
  • the indwelling needle hub 21 further includes an isolation plug 214 disposed at the rear end of the intersection of the through hole 212 and the shunt tube 213. The piercing needle 231 passes through the isolation plug 214 to pass through the through hole 212.
  • the isolation plug 214 is used to clamp the perforating needle 231 to prevent the perforating needle 231 from guiding the indwelling tube 211 to slip when it enters the venous blood vessel.
  • the push base 24 is a hollow tube body, and a pushing member 241 is disposed around the tube body, and a circular hole 243 is disposed in the center of the tube body, and the tube body periphery and the center circular hole 243 are provided. A circular arc hole 245 is provided between them.
  • the pull-back member 25 is embedded in the circular hole 243, and the circular arc member 222 of the protective seat 22 is bored in the circular arc hole 245.
  • a first fitting portion 2431 is disposed inside the circular hole 243 of the pushing seat 24, and a second fitting portion 251 is oppositely disposed on the outer periphery of the pulling member 25, and the retracting member 25 passes through the second portion.
  • the fitting portion 251 is fitted to the first fitting portion 2431.
  • a first socket portion 232 is disposed at a rear end of the needle insertion seat 23, and a second socket portion 252 is opposite to the front end of the back suction member 25.
  • the pusher 241 of the pusher seat 24 is pushed forward, and the pusher seat 24 will move the pullback member 25 forward to make the second sleeve of the pullback member 25 forward.
  • the 252 sleeve is over the first socket 232 of the needle hub 23 .
  • the medical staff uses the piercing needle 231 on the piercing needle seat 23 to guide the indwelling tube 211 into the human vein.
  • the medical staff pushes the pushing member 241 of the pushing seat 24 to the rear, and the pushing seat 24 will drive the pulling member 25 and the sleeved needle holder 23 to be pulled back to make the wearing
  • the piercing needle 231 on the needle hub 23 can be inverted into the needle receiving portion 221 of the protective seat 22 to achieve the purpose of safely recovering the piercing needle 231. Further, a detailed manner of splicing the first socket portion 232 and the second socket portion 252 will be described later.
  • a U-shaped stopper portion 224 is disposed on the outer periphery of the front end of the protection seat 22, and a portion of the tubular body of the push-piece housing 24 is oppositely provided with a U-shaped notch 244.
  • the second socket portion 252 of the drawing member 25 is fitted into the first socket portion of the piercing needle holder 23.
  • the rear end arc member 222 of the protection seat 22 is provided with a marking curve 2221.
  • the needle 231 needle can be used to recover the needle into the needle receiving portion 22. Further, a pair of wing portions 2411 having a slip preventing pattern are disposed on both sides of the pushing member 241, and a finger-shaped pushing portion 2413 of a recessed state is disposed above.
  • the medical staff can also choose to push the push base 24 forward through the wing portion 2411 of the pusher member 241, or push the pusher seat 24 backward through the finger pushing portion 2413 of the pusher member 241.
  • the venous indwelling needle 200 of the present invention further includes a spring assembly 26.
  • the spring assembly 26 includes A pressing member 261, a spring member 262 and a receiving seat 263, the pressing member 261 and the spring member 262 are received in the receiving seat 263, and the spring assembly 26 is assembled to the rear end of the protecting seat 22 by the receiving seat 263.
  • the side wall of the front end of the needle receiving portion 221 is formed with at least one groove 2211, and a slope 2213 is formed between each of the grooves 2211 and the front end hole 223.
  • the first socket portion 232 of the threading pin holder 23 is a groove structure
  • the second socket portion 252 of the drawing member 25 is a resilient protrusion. structure
  • An inner side wall of the first set of joints 232 is provided with a protrusion 2321 and a thin surface 2323, and the other inner side wall is provided with a thick surface 2325.
  • the lever action will cause the piercing needle holder 23 and its fixed piercing.
  • the needle 231 is tilted to prevent the piercing needle 231 from being accidentally bruised by the medical staff by being pierced out of the central front end hole 223 of the guard seat 22 (as shown in Figs. 2 and 3).
  • the second socket portion 252 of the present invention has a hollow structure inside, so that the second socket portion 252 has better elasticity, and the second socket portion 252 is sleeved to the first socket portion. On section 251.
  • the detailed operation contents of the piercing procedure and the needle-retracting procedure performed by the needle 231 are as follows: First, referring to FIG. 9 and FIG. 10, when the medical staff wants to perform a piercing procedure for the patient , the pusher 241 of the pusher seat 24 can be pushed forward to the stop portion 224 as shown in FIG. 4 :), the second sleeve portion 252 of the pullback member 25 will be sleeved on the first socket of the piercing needle hub 23 In the part 232, at this time, the medical staff will use the piercing needle 231 on the piercing needle holder 23 to guide the indwelling tube 211 into the human venous blood vessel.
  • the medical staff after confirming that the venous sputum is successful, the medical staff performs the needle-retracting recovery procedure of the puncturing needle 231, pushing the pushing member 241 of the pushing seat 24 to the rear, and piercing the needle holder 23 to follow the socket. Pull back together with the pull 25 to pull back.
  • the pusher 241 of the push pusher 24 is pulled back to the position of the indication curve 2221 (shown in FIG.
  • the piercing pin 231 will be separated from the front end hole 223, and the first sleeve portion 232 and the second sleeve
  • the leverage created between the joints 252 will cause the piercing needle 231 to tilt into the groove 2211, at which point the second socket 252 will lean against the thin face 2323.
  • the pusher 241 of the push pusher 24 is pulled back to the mark curve 2221 as shown in FIG.
  • the bottom of the member 25 will be pressed against the spring assembly 26 under compression. Thereafter, the pusher 241 is released, and the lever 231 is moved forward obliquely by the leverage generated between the first sleeve 232 and the second sleeve 252 and the rebound thrust of the spring assembly 26.
  • the needle passing through the shank 231 will be inclined into the groove 2211 along the inclined surface 2213, so that under the thrust of the spring assembly 26, the needle of the puncturing needle 231 can be pushed forward in the groove.
  • the 231 needle can be safely and safely recovered in the protective seat 22 to avoid the risk of accidental bruising of the wearing needle 231 by the medical staff.
  • the medical staff can detach the protection seat 22 from the rear end opening of the retention needle holder 21, thereby completing the needle recovery procedure of the needle 231. .
  • the invention provides a safe intravenous indwelling needle, in particular to a needle-injured intravenous indwelling needle, which comprises an indwelling needle seat fixed with an indwelling tube, a protective seat and a piercing needle fixed to the piercing needle.
  • the piercing pin can be exposed from the front end of the indwelling tube, and the push-pull seat can be pushed forward and backward on the protector seat, before the piercing procedure, pushing the push-up seat forward and withdrawing
  • the sleeve is sleeved on the needle holder, and after the threading procedure is completed, the pusher is pushed back and the needle holder is pulled back along with the back pull of the sleeve, and the needle is worn on the needle holder. That is, the needle can be recycled to the protective seat, so that after the piercing procedure is completed, the piercing needle will be recovered in the protective seat to avoid the risk of accidental bruising of the wearing needle by the medical staff.

Abstract

一种静脉留置针（200），包括一固设有留置管（211）的留置针座（21）、一保护座（22）、一固设有穿刺针（231）的穿刺针座（23）、一回抽件（25）及一推送座（24）。穿刺针（231）可以从留置管（211）的前端外露，推送座（24）可以在保护座（22）上进行前后滑动。穿刺前，往前推送推送座（24）令回抽件（25）套接在穿刺针座（23）上。完成穿刺后，再往后推送推送座（24）令穿刺针座（23）跟着套接的回抽件（25）往后拉，使得穿刺针座（23）上的穿刺针（231）回收至保护座（22）内。因此，可以避免医护人员被使用过的穿刺针（231）意外刺伤。

Description

安全静脉留置针 技术领域
本发明涉及一种安全静脉留置针， 尤其涉及一种防针剌伤的静脉留置针， 以避免医护人员被使用过的穿剌针意外剌伤的风险。 背景技术
需要多次静脉注射的病患， 为免多次穿剌注射时所造成的疼痛，一般都会 采用静脉留置针进行辅助注射， 以避免多次注射时所造成的疼痛。
请参阅图 1， 现有静脉留置针的立体构造分解图。 如图所示， 静脉留置针
100包括一留置针座 11及一穿剌针 13。
其中， 留置针座 11 的前端设置有一留置管 111， 而侧壁上连通有一分流 管 113， 该分流管 113将套设一输液管 12。 该输液管 12作为药剂注入或血液 流出的通道， 其设置有一接头部 121用以配接一可承接药剂或血液的管体、导 管或容器。而， 穿剌针 13的针体是可穿置于留置针座 11之中且其部分的针体 外露于留置管 111的前端。 再者， 静脉留置针 100未使用前， 一针套将套盖于 留置针座 11的前端上， 以套盖留置管 111及其穿置的穿剌针 13。
当静脉留置针 100 临床使用时， 医护人员可将针套取下， 以令留置针座 11前端的留置管 111及其穿置的穿剌针 13裸露在外。 穿剌针 13将引领留置 管 111进入人体的静脉血管之中。 见到回血后， 确认静脉穿剌成功， 将穿剌针 13抽出， 只将留置管 111留置在静脉血管内。之后， 药剂亦可经由输液管 12、 分流管 113及留置管 111而输入至人体之中。
以往，传统的静脉留置针 100抽出穿剌针 13时， 穿剌针 13将完全裸露于 外界。 此沾粘有病人血液的穿剌针 13容易造成医护人员的误伤及感染， 并给 医疗回收处理造成困难， 以致存在医疗防护上的隐忧。
在此， 本发明将提出一种防针剌伤的静脉留置针， 可以防止医护人员回收 穿剌针时被针剌伤， 从而降低医护人员被针剌伤感染的风险，将会是本发明欲 达到的目的。 发明公开 本发明的一目的， 在于提供一种安全静脉留置针， 其包括一固设有留置管 的留置针座、一保护座、一固设有穿剌针的穿剌针座及一嵌固有回抽件的推送 座， 推送座可以在保护座上进行前后滑动； 进行穿剌程序前， 往前推送推送座 而令回抽件套接在穿剌针座上， 回抽件套接在穿剌针座后， 利用穿剌针座上的 穿剌针引领留置管穿剌进入人体静脉； 完成穿剌程序后， 再往后推送推送座而 令穿剌针座跟着套接的回抽件往后拉引，以将穿剌针座上的穿剌针倒针回收至 保护座内， 而避免医护人员被使用过的穿剌针意外剌伤的风险。
本发明又一目的， 在于提供一种安全静脉留置针， 在保护座内设置一针头 容置部， 针头容置部的前端内缘侧壁形成有至少一沟槽； 当回抽件套接于穿剌 针座时，杠杆作用将产生于回抽件及穿剌针座间以迫使穿剌针退针至保护座时 倾斜置入于针头容置部的沟槽内，藉以降低穿剌针再次从保护座的中心穿出的 机会。
本发明又一目的， 在于提供一种安全静脉留置针， 其保护座的后端设置有 一弹簧组件， 利用推送件往后推送推送座以压抵弹簧组件受力压缩， 而在松开 推送件后， 弹簧组件的反弹推力将前推穿剌针座， 以让穿剌针座上的穿剌针针 头可以稳固地往前顶止在针头容置部的沟槽深处，而进一歩增加穿剌针回收上 的安全性。
为了达到上述的目的， 本发明提供一种安全静脉留置针， 包括： 一留置针 座， 其中心设置一容通孔， 侧壁上设置一与容通孔连通的分流管， 其中容通孔 的前端固设有一外露于留置针座外的留置管； 一保护座， 其前端设有一针头容 置部， 而后端为一圆弧件， 保护座接合于留置针座的容通孔上； 一穿剌针座， 其前端插固一穿剌针， 后端设有一第一套接部， 当穿剌针座容置于针头容置部 时， 穿剌针通过保护座体中心的一前端孔、 留置针座的容通孔及留置管以从留 置管的前端外露； 一回抽件， 其前端设有一第二套接部； 及一推送座， 为一中 空管体， 其管体外围设置一推送件， 管体中心嵌固有回抽件， 管体外围与管体 中心之间穿设有保护座的圆弧件，推送座通过推送件的推送动作以在保护座的 圆弧件上进行前后的滑动， 当推送件往前推送， 回抽件的第二套接部与穿剌针 座的第一套接部彼此套接， 当推送件往后推送， 与回抽件套接一起的穿剌针座 跟着向后拉引， 以致穿剌针倒针至针头容置部内。
本发明一实施例中， 其中第一套接部为一凹槽结构，第二套接部为一凸块 结构，第一套接部的一内缘侧壁设有一凸起及一薄面而另一内缘侧壁设有一厚 面， 当第二套接部套接于第一套接部时，杠杆作用将产生于穿剌针座及回抽件 间以迫使穿剌针往后退针至针头容置部时产生倾斜。
本发明一实施例中， 其中推送座的管体中心设置一圆孔， 管体外围与圆孔 之间设置一圆弧孔，回抽件嵌固于圆孔中，而保护座的圆弧件穿设于圆弧孔中。
本发明一实施例中， 其中针头容置部的前端内缘侧壁形成有至少一沟槽， 当穿剌针退针至针头容置部时， 穿剌针的针头倾斜置入于沟槽内。
本发明一实施例中， 其中沟槽与前端孔间形成有一斜面， 当穿剌针从前端 孔退针至针头容置部时， 穿剌针的针头沿着斜面倾斜进入沟槽内。
本发明一实施例中，还包括一弹簧组件，弹簧组件固设在保护座的后端上， 利用推送件往后推送推送座以压抵弹簧组件受力压缩， 而在松开推送件后， 弹 簧组件的反弹力将前推推送座、 回抽件及穿剌针座， 以令穿剌针座上的穿剌针 针头前顶在沟槽深处。
本发明一实施例中， 其中弹簧组件包括一压抵件、 一弹簧件及一收容座， 压抵件及弹簧件容置于收容座之中，弹簧组件利用收容座以装配于保护座的一 后端容置口之上。
本发明一实施例中， 其中推送件的上方设置一凹陷态样的指推部， 而两侧 设置一对具有止滑纹的翼部。
本发明一实施例中， 其中留置针座内还包括一隔离塞， 隔离塞设置于容通 孔与分流管的交接处的后端， 穿剌针经由剌穿隔离塞以通过容通孔。
本发明一实施例中， 其中保护座的前端外围设有一 U型的挡部而推送座 的部分管体相对设有一 u型的缺口， 保护座的圆弧件后端上设有一标示曲线， 当推送件往前推送而令推送座的缺口贴合至挡部时，回抽件的第二套接部将套 入于穿剌针座的第一套接部中， 或者， 当推送件往后推送而令推送座的缺口移 至标示曲线上方时， 穿剌针针头将倒针回收至针头容置部内。 附图简要说明
图 1 : 为现有静脉留置针的立体构造分解图；
图 2: 为本发明安全静脉留置针的立体构造分解图；
图 3: 为本发明安全静脉留置针的剖视构造分解图； 图 4: 为本发明安全静脉留置针的立体构造组合图；
图 5 : 为本发明安全静脉留置针的剖视构造组合图；
图 6: 为本发明保护座的局部结构立体放大图；
图 7A-图 ΊΈ:分别为本发明推送座的立体构造图、俯视图、侧视图、 A-A' 方向构造剖视图及 B-B ' 方向构造剖视图；
图 8: 为本发明图 5的局部构造放大图；
图 9: 为本发明安全静脉留置针的推送座往前推送的剖视构造分解图； 图 10: 为本发明图 9的局部构造放大图；
图 11 : 为本发明安全静脉留置针的推送座往后推送的剖视构造分解图； 图 12: 为本发明图 11的局部构造放大图。 其中 附图标记
100 静脉留置针 1 1
111 1 13 分流管
12 输液管 121 接头部
13 穿剌针 200 静脉留
21 留置针座 211
212 容通孔 2120 第一卡固体
213 )lL目 214 隔离塞
215 输液管 22 保护座
221 针头容置部 221 1 沟槽
2213 斜面 222 圆弧件
2221 标示曲线 223 刖 ¾孑
2230 第二卡固体 224 挡部
225 后端 23 穿剌针座
231 穿剌针 232
2321 凸起 2323
2325 厚面 24
Figure imgf000005_0001
241 推送件 241 1
2413 指推部 243 圆孔 2431 第一嵌合部 244 缺口
245 圆弧孔 25 回抽件
251 第二嵌合部 252 第二套接部
26 弹簧组件 261 压抵件
262 弹簧件 263 收容座 实现本发明的最佳方式
下面结合附图对发明的结构原理和工作原理作具体的描述：
参阅图 2、 图 3、 图 4及图 5， 分别为本发明安全静脉留置针一较佳实施 例的立体构造分解图、 剖视构造分解图、 立体构造组合图及剖视构造组合图。 如图所示，静脉留置针 200包括一留置针座 21、一保护座 22、一穿剌针座 23、 一推送座 24、 一回抽件 25。
其中， 留置针座 21的中心设置一容通孔 212，侧壁上设置一与容通孔 212 连通的分流管 213。 该分流管 213套设一输液管 215， 输液管 215将作为药剂 注入或血液流出的通道。再者， 于容通孔 212的前端固设有一外露于留置针座 21外的留置管 211， 而后端为一开口。
进一歩配合参阅图 6所示， 保护座 22的前端设有一中空管体的针头容置 部 221， 前端中心处形成有一前端孔 223， 而后端为一圆弧件 222。 本发明一 实施例中，保护座 22的前端亦可直接接合于留置针座 21的后端开口中。或者， 本发明又一实施例中， 留置针座 21的后端开口内缘进一歩设有一第一卡固体 2120， 保护座 22的前端孔 223的外围进一歩环设一第二卡固体 2230， 留置针 座 21与保护座 22利用第一卡固体 2120与第二卡固体 2230的卡合 (例如： 彼 此相对的凸部及凹部：)以稳定地接合一起。
穿剌针座 23的前端插固一穿剌针 231。 当穿剌针座 23设置于保护座 22 的针头容置部 221时， 穿剌针 231将会依序通过保护座体 22的前端孔 223、 留置针座 21的容通孔 212及留置管 211以从留置管 211的前端外露。 再者， 留置针座 21 内还包括一隔离塞 214， 其设置于容通孔 212与分流管 213的交 接处后端。 穿剌针 231经由剌穿隔离塞 214以通过容通孔 212。 隔离塞 214用 以夹紧穿剌针 231， 以避免穿剌针 231引领留置管 211穿剌进入静脉血管时产 生滑动。 进一歩配合参阅图 7A-图 7E所示， 推送座 24为一中空管体， 其管体外围 设置一推送件 241， 管体中心设置一圆孔 243， 而管体外围与中心圆孔 243之 间设置一圆弧孔 245。 于本发明中， 回抽件 25嵌固在圆孔 243中， 而保护座 22的圆弧件 222穿设于圆弧孔 245中。 利用推送件 241的推送动作， 推送座 24将可在保护座 22的圆弧件 222上进行前后的滑动， 且嵌固在推送座 24中 的回抽件 25也会跟着推送座 24进行相对的作动。在本发明一实施例中， 推送 座 24的圆孔 243内部设置一第一嵌合部 2431， 而回抽件 25的外围相对环设 一第二嵌合部 251， 回抽件 25通过第二嵌合部 251以嵌固在第一嵌合部 2431 上。
又， 穿剌针座 23的后端设有一第一套接部 232， 而回抽件 25的前端相对 设有一第二套接部 252。 当医护人员欲对于病患进行穿剌时， 推送推送座 24 的推送件 241往前， 则推送座 24将会带动回抽件 25往前移动， 以令回抽件 25的第二套接部 252套接于穿剌针座 23的第一套接部 232之上。 回抽件 25 套接于穿剌针座 23后，医护人员利用穿剌针座 23上的穿剌针 231引领留置管 211穿剌进入人体静脉血管之中。医护人员在确认穿剌成功后， 推送推送座 24 的推送件 241往后，则推送座 24将会带动回抽件 25及其套接一起的穿剌针座 23往后拉引， 以令穿剌针座 23上的穿剌针 231可以倒针至保护座 22的针头 容置部 221 内， 而达到穿剌针 231 安全回收的目的。 再者， 关于第一套接部 232与第二套接部 252的详细套接方式容后叙述。
又，保护座 22的前端外围设有一 U型的挡部 224， 而推送座 24的部分管 体相对设有一 U型的缺口 244。 当推送件 241往前推送而令推送座 24的缺口 244贴合至挡部 224时， 则回抽件 25的第二套接部 252将套入于穿剌针座 23 的第一套接部 232中。 此外， 保护座 22的后端圆弧件 222上设有一标示曲线 2221 ο 当推送件 241往后推送而令推送座 24的缺口 244移至标示曲线 2221 上方时， 此时穿剌针座 23上的穿剌针 231针头将可以倒针回收至针头容置部 22内。 此外， 推送件 241的两侧设置一对具有止滑纹的翼部 2411， 而上方设 置一凹陷态样的指推部 2413。 医护人员亦可选择通过推送件 241的翼部 2411 往前推送推送座 24， 或者选择通过推送件 241的指推部 2413往后推送推送座 24。
再者， 本发明静脉留置针 200还包括一弹簧组件 26。 该弹簧组件 26包括 一压抵件 261、 一弹簧件 262及一收容座 263， 压抵件 261及弹簧件 262容置 于收容座 263之中，弹簧组件 26利用收容座 263以装配于保护座 22的后端容 置口 225之上。 而， 针头容置部 221的前端内缘侧壁形成有至少一沟槽 2211， 各沟槽 2211与前端孔 223间分别形成有一斜面 2213。
请参阅图 8为图 5的局部构造放大图。 如图所示， 于本发明一实施例中， 穿剌针座 23的第一套接部 232为一凹槽结构， 而回抽件 25的第二套接部 252 为一具弹性的凸块结构。 第一套接部 232的一内缘侧壁设有一凸起 2321及一 薄面 2323， 而另一内缘侧壁设有一厚面 2325。 当第二套接部 252套接于第一 套接部 232时， 第一套接部 232内的凸起 2321将挤压第二套接部 252靠向厚 面 2325而令杠杆作用产生于穿剌针座 23及回抽件 25间。 之后， 穿剌针座 23 上的穿剌针 231向后抽离于前端孔 223(如图 2及图 3所示：)时， 杠杆作用将使 穿剌针座 23及其固设的穿剌针 231产生倾斜， 以避免穿剌针 231再次由保护 座 22的中心前端孔 223(如图 2及图 3所示)穿出而让医护人员意外剌伤。再者， 本发明所述的第二套接部 252 其内部为一中空结构， 以使得第二套接部 252 具有较佳的弹性， 而利于第二套接部 252套接于第一套接部 251上。
接续，对于穿剌针 231所进行的穿剌程序与倒针回收程序， 其详细操作内 容如下所述： 首先， 参阅图 9及图 10所示， 当医护人员欲对于病患进行穿剌 程序时， 可以推送推送座 24的推送件 241往前至挡部 224如图 4所示：)位置， 回抽件 25的第二套接部 252将套接在穿剌针座 23的第一套接部 232之中，此 时医护人员将利用穿剌针座 23上的穿剌针 231引领留置管 211穿剌进入人体 静脉血管之中。并且， 于回抽件 25的第二套接部 252套接于穿剌针座 23的第 一套接部 232时， 第一套接部 232中的凸起 2321将挤压第二套接部 252靠向 厚面 2325而令杠杆作用产生于穿剌针座 23与回抽件 25间。
继续参阅图 11及图 12所示， 医护人员在确认静脉穿剌成功后， 进行穿剌 针 231的倒针回收程序， 推送推送座 24的推送件 241往后， 穿剌针座 23跟着 套接一起的回抽件 25往后拉引。当推送推送座 24的推送件 241往后拉引至标 示曲线 2221(如图 4所示)位置时， 穿剌针 231将会脱离于前端孔 223， 则第一 套接部 232及第二套接部 252间所产生的杠杆作用将导致穿剌针 231产生倾斜 而进入沟槽 2211内， 此时的第二套接部 252将会靠向薄面 2323。 又， 当推送 推送座 24的推送件 241往后拉引至标示曲线 2221如图 4所示：)位置时， 回抽 件 25的底部将会压抵弹簧组件 26受力压缩。 之后， 松开推送件 241， 利用第 一套接部 232及第二套接部 252间所产生的杠杆作用以及弹簧组件 26的反弹 推力下， 穿剌针 231将会倾斜往前移动。 并且， 配合斜面 2213的设计， 穿剌 针 231针头将会沿着斜面 2213倾斜进入 2211沟槽内， 如此在弹簧组件 26的 推力作用下将可使得穿剌针 231针头往前顶止在沟槽 2211深处， 于是穿剌针 231针头即可安全无虞地回收于保护座 22之中， 以避免医护人员被使用过的 穿剌针 231意外剌伤的风险。 而后， 当穿剌针 231针头确实倒针在保护座 22 内部时， 医护人可以将保护座 22从留置针座 21的后端开口处进行拆离， 藉以 完成穿剌针 231的倒针回收程序。
当然， 本发明还可有其它多种实施例， 在不背离本发明精神及其实质的情 况下， 熟悉本领域的技术人员当可根据本发明作出各种相应的改变和变形，但 这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。 工业应用性
本发明提供的安全静脉留置针， 尤指一种防针剌伤的静脉留置针， 其包括 一固设有留置管的留置针座、一保护座、一固设有穿剌针的穿剌针座、 一回抽 件及一推送座， 穿剌针可以从留置管的前端外露， 推送座可以在保护座上进行 前后的滑动推送， 进行穿剌程序前，往前推送推送座而令回抽件套接在穿剌针 座上， 完成穿剌程序后， 再往后推送推送座而令穿剌针座跟着套接的回抽件往 后拉引， 则穿剌针座上的穿剌针即可以倒针回收至保护座内， 藉此， 穿剌程序 完成后， 穿剌针将回收于保护座内， 以避免医护人员被使用过的穿剌针意外剌 伤的风险。

Claims

权利要求书
1 . 一种安全静脉留置针， 其特征在于， 包括：
一留置针座，其中心设置一容通孔，侧壁上设置一与容通孔连通的分流管， 其中容通孔的前端固设有一外露于留置针座外的留置管；
一保护座， 其前端设有一针头容置部， 而后端为一圆弧件， 保护座接合于 留置针座的容通孔上；
一穿剌针座， 其前端插固一穿剌针， 后端设有一第一套接部， 当穿剌针座 容置于针头容置部时， 穿剌针通过保护座体中心的一前端孔、 留置针座的容通 孔及留置管以从留置管的前端外露；
一回抽件， 其前端设有一第二套接部； 及
一推送座， 为一中空管体， 其管体外围设置一推送件， 管体中心嵌固有回 抽件， 管体外围与管体中心之间穿设有保护座的圆弧件， 推送座通过推送件的 推送动作以在保护座的圆弧件上进行前后的滑动， 当推送件往前推送， 回抽件 的第二套接部与穿剌针座的第一套接部彼此套接， 当推送件往后推送， 与回抽 件套接一起的穿剌针座跟着向后拉引， 以致穿剌针倒针至针头容置部内。
2 . 根据权利要求 1所述的安全静脉留置针， 其特征在于， 该第一套接部 为一凹槽结构， 该第二套接部为一凸块结构， 该第一套接部的一内缘侧壁设有 一凸起及一薄面而另一内缘侧壁设有一厚面，当该第二套接部套接于该第一套 接部时，杠杆作用将产生于该穿剌针座及该回抽件间以迫使该穿剌针往后退针 至该针头容置部时产生倾斜。
3 . 根据权利要求 1所述的安全静脉留置针， 其特征在于， 该推送座的管 体中心设置一圆孔， 管体外围与该圆孔之间设置一圆弧孔， 该回抽件嵌固于该 圆孔中， 而该保护座的该圆弧件穿设于该圆弧孔中。
4 . 根据权利要求 2所述的安全静脉留置针， 其特征在于， 该针头容置部 的前端内缘侧壁形成有至少一沟槽， 当该穿剌针退针至该针头容置部时， 该穿 剌针的针头倾斜置入于该沟槽内。
5 . 根据权利要求 4所述的安全静脉留置针， 其特征在于， 该沟槽与该前 端孔间形成有一斜面， 当该穿剌针从该前端孔退针至该针头容置部时， 该穿剌 针的针头沿着该斜面倾斜进入该沟槽内。
6 . 根据权利要求 4所述的安全静脉留置针， 其特征在于， 还包括一弹簧 组件， 该弹簧组件固设在该保护座的后端上， 利用该推送件往后推送该推送座 以压抵该弹簧组件受力压缩， 而在松开该推送件后， 该弹簧组件的反弹力将前 推该推送座、该回抽件及该穿剌针座， 以令该穿剌针座上的该穿剌针针头往前 顶止在该沟槽深处。
7 . 根据权利要求 6所述的安全静脉留置针， 其特征在于， 该弹簧组件包 括一压抵件、一弹簧件及一收容座，该压抵件及该弹簧件容置于该收容座之中， 该弹簧组件利用该收容座以装配于该保护座的一后端容置口之上。
8 . 根据权利要求 1所述的安全静脉留置针， 其特征在于， 该推送件的上 方设置一凹陷形状的指推部， 而两侧设置一对具有止滑纹的翼部。
9 . 根据权利要求 1所述的安全静脉留置针， 其特征在于， 该留置针座内 还包括一隔离塞， 该隔离塞设置于该容通孔与该分流管的交接处的后端， 该穿 剌针经由剌穿该隔离塞以通过该容通孔。
10. 根据权利要求 1所述的安全静脉留置针， 其特征在于， 该保护座的前 端外围设有一 U型的挡部而该推送座的部分管体相对设有一 U型的缺口， 该 保护座的该圆弧件后端上设有一标示曲线，当该推送件往前推送而令该推送座 的该缺口贴合至该挡部时，该回抽件的该第二套接部将套入于该穿剌针座的该 第一套接部中， 或者， 当该推送件往后推送而令该推送座的该缺口移至该标示 曲线上方时， 该穿剌针针头将倒针回收至该针头容置部内。
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