WO2017118308A1 - 安全注射器 - Google Patents

安全注射器 Download PDF

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Publication number
WO2017118308A1
WO2017118308A1 PCT/CN2016/112099 CN2016112099W WO2017118308A1 WO 2017118308 A1 WO2017118308 A1 WO 2017118308A1 CN 2016112099 W CN2016112099 W CN 2016112099W WO 2017118308 A1 WO2017118308 A1 WO 2017118308A1
Authority
WO
WIPO (PCT)
Prior art keywords
hook
needle
syringe
safety syringe
deformation portion
Prior art date
Application number
PCT/CN2016/112099
Other languages
English (en)
French (fr)
Inventor
吕文进
Original Assignee
吕文进
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
Priority to MYPI2018001154A priority Critical patent/MY193032A/en
Priority to PL16883433T priority patent/PL3400980T3/pl
Priority to UAA201807590A priority patent/UA121916C2/uk
Priority to AU2016384940A priority patent/AU2016384940B2/en
Priority to BR112018013823-1A priority patent/BR112018013823B1/pt
Priority to KR1020187020053A priority patent/KR102203317B1/ko
Priority to ES16883433T priority patent/ES2869288T3/es
Priority to US16/068,216 priority patent/US10918806B2/en
Application filed by 吕文进 filed Critical 吕文进
Priority to JP2018533944A priority patent/JP6576565B2/ja
Priority to EP16883433.1A priority patent/EP3400980B1/en
Priority to MA42866A priority patent/MA42866A1/fr
Priority to CA3010878A priority patent/CA3010878C/en
Priority to RU2018124348A priority patent/RU2703655C1/ru
Publication of WO2017118308A1 publication Critical patent/WO2017118308A1/zh
Priority to CONC2018/0006591A priority patent/CO2018006591A2/es
Priority to PH12018501423A priority patent/PH12018501423A1/en
Priority to ZA2018/05077A priority patent/ZA201805077B/en

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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
    • A61M5/178—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
    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • A61M5/3221—Constructional features thereof, e.g. to improve manipulation or functioning
    • 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
    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • A61M5/3232—Semi-automatic needle retraction, i.e. in which triggering of the needle retraction requires a deliberate action by the user, e.g. manual release of spring-biased retraction means
    • 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
    • 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
    • A61M5/50—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 having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
    • 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
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
    • A61M2005/31516—Piston or piston-rod constructions, e.g. connection of piston with piston-rod reducing dead-space in the syringe barrel after delivery
    • 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
    • A61M2005/3206—Needle or needle hub disconnecting devices forming part of or being attached to the hub or syringe body
    • 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
    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • A61M5/3221—Constructional features thereof, e.g. to improve manipulation or functioning
    • A61M2005/3223—Means impeding or disabling repositioning of used needles at the syringe nozzle
    • A61M2005/3224—Means to disalign the needle tip and syringe nozzle
    • 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
    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • A61M5/3221—Constructional features thereof, e.g. to improve manipulation or functioning
    • A61M2005/323—Connection between plunger distal end and needle hub proximal end, e.g. stud protruding from the plunger
    • 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
    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • A61M5/3221—Constructional features thereof, e.g. to improve manipulation or functioning
    • A61M2005/3231—Proximal end of needle captured or embedded inside piston head, e.g. by friction or hooks
    • 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
    • A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A61M5/348—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub snap lock, i.e. upon axial displacement of needle assembly

Definitions

  • the invention relates to medical devices, and in particular to a safety syringe.
  • the main object of the present invention is to provide a safety syringe which can stably fix the position of the needle holder, facilitates quick return of the needle holder, and effectively reduces the residue of the liquid medicine.
  • the needle holder has an alcove communicating with the pinhole and the interlocking deformation portion.
  • the needle holder has a flow guiding surface that is in contact with the concave chamber.
  • the needle holder has an inner contraction surface corresponding to the interlocking deformation portion.
  • the vertical distance L1 of the needle center line to the outer edge of the hook is smaller than the vertical distance L2 of the center line of the needle seat to the outer edge of the interlocking deformation portion.
  • the sleeve portion extends a portion of the length and is coupled to the interlocking deformation portion.
  • seal ring R disposed between the barrel and the hub.
  • the syringe has a main cylinder and a front sleeve sleeved to the main cylinder.
  • a front end of the front sleeve corresponding to the main cylinder is provided with a toothed structure, and the toothed structure on the front end surface of the front sleeve and the toothed structure on the end surface of the main cylinder are mutually Engage. It can prevent rotation between the front sleeve and the main cylinder.
  • a sealing ring R is also included, and the sealing ring R is disposed between the front sleeve and the seat of the needle seat.
  • the syringe has a counterbore
  • the hub has a counterbore that is positioned to fit the syringe.
  • the safety syringe provided by the invention can stably fix the position of the needle holder, facilitates quick return of the needle holder, and effectively reduces the residue of the liquid medicine.
  • Figure 1 is a perspective view of a preferred embodiment of the present invention
  • Figure 2 is a cross-sectional view showing an operational state of a preferred embodiment of the present invention
  • Figure 3 is a cross-sectional view showing another operational state of a preferred embodiment of the present invention.
  • Figure 4 is a perspective view of a needle holder in accordance with a preferred embodiment of the present invention.
  • Figure 5 is a perspective view of another preferred embodiment of the present invention.
  • Figure 6 is a cross-sectional view showing an operational state of another preferred embodiment of the present invention.
  • Figure 7 is a cross-sectional view showing another operational state of another preferred embodiment of the present invention.
  • Figure 8 is a perspective view of a needle holder according to another preferred embodiment of the present invention.
  • Figure 9 is a perspective view of still another preferred embodiment of the present invention.
  • Figure 10 is a cross-sectional view showing an operational state of still another preferred embodiment of the present invention.
  • Figure 11 is a cross-sectional view showing another operational state of still another preferred embodiment of the present invention.
  • Figure 13 is a perspective view of still another preferred embodiment of the present invention.
  • Figure 14 is a cross-sectional view showing an operational state of still another preferred embodiment of the present invention.
  • Figure 15 is a cross-sectional view showing another operational state of still another preferred embodiment of the present invention.
  • Figure 16 is a perspective view of a needle holder according to still another preferred embodiment of the present invention.
  • Figure 17 is a side elevational view of the front cover in accordance with still another preferred embodiment of the present invention.
  • Figure 18 is a front elevational view of the front cover in accordance with still another preferred embodiment of the present invention.
  • Figure 19 is a side elevational view of the main cylinder in accordance with still another preferred embodiment of the present invention.
  • a safety syringe As shown in FIG. 1 to FIG. 4, a safety syringe according to a preferred embodiment of the present invention includes:
  • the main cylinder 10 alone constitutes a syringe 1; that is, in a broad sense, the safety syringe of the present invention comprises a syringe 1 having a main cylinder 10.
  • the main cylinder 10 has a barrel 11 , and a chamber 12 communicates with a mounting hole 13 .
  • a card slot 14 is located at an inner edge of the mounting hole 13 , and a counterbore 15 is between the chamber 12 and the card slot 14 .
  • a needle holder 20 having a body 21, the seat body 21 is mounted on the mounting hole 13 of the main cylinder 10, a pinhole 22, a shoulder 23 is fitted to the counterbore 15 of the barrel 1, and a rod 24 is provided.
  • the body is slightly tapered, and the interlocking deformation portion 25 is connected to the hook 24 in a convex curved shape, and a cylinder portion 26 is connected to the interlocking deformation portion 25 to be interlocked and can be locked in the syringe 1 card slot 14.
  • the needle holder 20 further has a contracting surface 211 corresponding to the interlocking deformation portion 25; that is, the seat body 21 and/or the hook rod 24 form a slightly cut surface corresponding to the interlocking deformation portion 25 to provide the interlocking deformation portion 25 More changes Shape space.
  • the needle holder 20 further has an recess 27 open between the pinhole 22 and the interlocking deformation portion 25.
  • the needle holder 20 further has a ring groove 28 for mounting a sealing ring R for sealing the syringe 1 and the needle holder 20. between.
  • the needle holder 20 also has a flow guiding surface 212 that is in contact with the concave chamber 27, and the flow guiding surface 212 is also in contact with the contracting surface 211, which allows the liquid medicine to flow to the concave chamber 27 more easily.
  • the other end of the cartridge portion 26 is also connected to the seat body 21.
  • the hub 20 is directly provided with a needle N in its pinhole 22.
  • the vertical distance L1 from the center line of the needle hub 20 to the outer edge of the hook 24 is smaller than the vertical distance L2 from the center line of the needle holder 20 to the outer edge of the interlocking deformation portion 25.
  • a rod 3 has a push rod 30 having a shaft 31 and a plug 40 attached to the shaft 31 of the push rod 30.
  • the sealing 40 has a hook hole 41 for squeezing the hook 24 of the needle holder 20 and compressing the interlocking deformation portion 25 to elastically deform so that the cartridge portion 26 of the needle holder 20 is not locked to the card slot 14 of the syringe 1
  • the hook hole 41 can be hooked by the hook 24 of the hook holder 20 to move the needle holder 20.
  • the cartridge portion 26 of the hub 20 is operatively engaged with the cartridge slot 14 of the syringe 1.
  • the cartridge portion 26 of the needle holder 20 can be controlled to leave the syringe. If the card slot 14 of the card is no longer engaged, it can be smoothly pulled back.
  • the interlocking deformation portion 25 is elastically deformed and the gap between the seat body 21 and the hook 24 is reduced, the chemical solution remaining therebetween can be reduced.
  • the focus of the present invention is further that the interlocking deformation portion 25 of the needle hub 20 is engaged with the recess 27,
  • the design can also effectively reduce the amount of residual drug solution.
  • the present invention provides a safety syringe of another embodiment, which is substantially the same as the foregoing embodiment, and the main difference is that:
  • the hub 20 also has a pin portion 29 formed in the front section.
  • the needle N is disposed on a connector N1, and the connector N1 is further connected to the pin portion 29 of the hub 20.
  • the present embodiment can also achieve the object of the present invention.
  • a safety syringe according to another preferred embodiment of the present invention is substantially the same as the foregoing embodiment, and the main differences are as follows:
  • the syringe 1 has a main cylinder 10 and a front sleeve 50 which are sealingly sleeved on the main cylinder 10 to form a socket hole 13 .
  • the sealing ring R is disposed between the front sleeve 50 and the seat body 21 of the needle holder 20 .
  • the main cylinder 10 further has a front sleeve 50 sleeved on the front end of the main cylinder 10.
  • the card slot 14 and the counterbore 15 are formed in the main cylinder 10, and may of course be formed in the front sleeve 50. It is a combination of two members which makes the manufacture of the syringe 1 simpler and can increase its use form.
  • the present embodiment can also achieve the object of the present invention.
  • a safety syringe according to another preferred embodiment of the present invention is substantially the same as the foregoing embodiment, and the main differences are as follows:
  • the needle hub 20 has a larger size and an outer tubular portion is formed for mounting the needle N.
  • the cartridge portion 26 can extend a portion of the length and be coupled to the interlocking deformation portion 25. Therefore, the interlocking deformation portion 25 of the needle holder 20 can be elastically deformed by the hook hole 41 of the sealing member 40, and the engaging cylinder portion 26 can be engaged and disengaged.
  • the present embodiment can also achieve the object of the present invention.
  • the push rod 30 and the closure 40 of the present invention may be combined or may be integral.
  • the sealing ring R of the present invention may be integrally formed in the syringe 1 in addition to being a separate member as described above. Or integrally formed in the needle holder 20.
  • the front cover 50 is first attached to the front end of the main cylinder 10, and the needle holder 20 is inserted from the rear end of the main cylinder 10 to the front end of the main cylinder 10, and the interlocking deformation portion 25 of the needle holder 20 is attached.
  • the card is inserted into the card slot 14 of the main cylinder 10, and then the connector N1 is mounted on the front end of the needle holder 20, and then the needle 10 is mounted on the connector N1.
  • the connector N1 is mounted, the connector N1 is rotated with the needle holder 20.
  • the front sleeve 50 can be The corresponding end faces of the main cylinder 10 are provided with mutually matching tooth-like structures, and the tooth-like structure of the end faces of the front cover 50 and the tooth-like structure of the end faces of the main cylinder 10 are engaged with each other, so that when the connector N1 is rotated, the front cover 50 and the front cover 50 are The main cylinder 10 does not rotate, and the connector N1 can be locked to the needle holder 20, which in turn can lock the needle N.
  • the safety syringe provided by the present invention can securely fix the position of the needle holder, facilitate the quick pull back of the needle holder, and effectively reduce the residual of the liquid medicine, thus achieving the object of the present invention.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hematology (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Environmental & Geological Engineering (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

一种安全注射器，包含有一针筒(1)，具有一筒身(11)，一容室(12)，一装座孔(13)，一卡座槽(14)；一针座(20)，具有一座身(21)装设于该针筒(1)的装座孔(13)，一针孔(22)，一勾杆(24)，一连动变形部(25)连接于该勾杆(24)，及一卡筒部(26)接于该连动变形部(25)受其连动并可卡止于该针筒(1)的卡座槽(14)；一杆塞(3)，具有一杆身(31)，以及一插勾孔(41)可套接该针座(20)的勾杆(24)并压缩该连动变形部(25)弹性变形使该针座(20)的卡筒部(26)不卡止于该针筒(1)的卡座槽(14)，该插勾孔(41)可卡勾该针座(20)的勾杆(24)使移动该针座(20)。由此，安全注射器可稳固定位针座(20)，方便快速回拉针座(20)，并有效减少药液的残留。

Description

安全注射器 技术领域
本发明与医疗器具有关，特别是指一种安全注射器。
背景技术
习知安全注射器，如美国US20060106339公开专利，其仍有针座的固定及回拉不确实，以及药液残留量较多的问题。
因此，所述已知安全注射器的缺点仍然有待改进。
发明内容
针对上述问题，本发明的主要目的在于提供一种安全注射器，其可稳固定位针座，方便快速回拉针座，并有效减少药液的残留。
为达到上述目的，本发明所提供的一种安全注射器，包含有：一针筒，具有一筒身，一容室，一装座孔，一卡座槽；一针座，具有一座身，所述座身装设于所述针筒的装座孔，一针孔，一勾杆，一连动变形部连接于所述勾杆，及一卡筒部接于所述连动变形部受其连动并能卡止于所述针筒的卡座槽；一杆塞，具有一杆身，以及一插勾孔能套接所述针座的勾杆并压缩所述连动变形部弹性变形使所述针座的卡筒部不卡止于所述针筒的卡座槽，所述插勾孔能卡勾所述针座的勾杆使移动所述针座。
所述针座具有一凹室相通所述针孔与连动变形部。
所述针座具有一导流面相接于所述凹室。
所述针座具有一内缩面对应所述连动变形部。
所述针座中心线到勾杆外缘的垂直距离L1小于所述针座中心线到连动变形部外缘的垂直距离L2。
所述卡筒部延伸一部分长度与所述连动变形部相连接。
还包含一密封环R，所述密封环R设在所述针筒与针座之间。
所述针筒具有一主筒及一前套套接于所述主筒。
作为本发明的进一步改进是，所述前套与所述主筒相对应的端面上设置有齿状结构，所述前套端面上的齿状结构与所述主筒端面上的齿状结构相互啮合。可防止前套与主筒之间发生转动。
还包含一密封环R，所述密封环R设于所述前套与针座的座身之间。
所述针筒具有一沉孔，所述针座具有一座肩配合定位于所述针筒的沉孔。
采用上述技术方案，本发明所提供的安全注射器其确实可稳固定位针座，方便快速回拉针座，并有效减少药液的残留。
附图说明
图1是本发明一较佳实施例的立体图；
图2是本发明一较佳实施例的一操作状态剖视图；
图3是本发明一较佳实施例另一操作状态剖视图；
图4是本发明一较佳实施例针座的立体图；
图5是本发明另一较佳实施例的立体图；
图6是本发明另一较佳实施例的一操作状态剖视图；
图7是本发明另一较佳实施例另一操作状态剖视图；
图8是本发明另一较佳实施例针座的立体图；
图9是本发明再一较佳实施例的立体图；
图10是本发明再一较佳实施例的一操作状态剖视图；
图11是本发明再一较佳实施例另一操作状态剖视图；
图12是本发明再一较佳实施例针座的立体图；
图13是本发明又一较佳实施例的立体图；
图14是本发明又一较佳实施例的一操作状态剖视图；
图15是本发明又一较佳实施例另一操作状态剖视图；
图16是本发明又一较佳实施例针座的立体图；
图17是本发明又一较佳实施例中前套的侧视图；
图18是本发明又一较佳实施例中前套的主视图；
图19是本发明又一较佳实施例中主筒的侧视图。
具体实施方式
现举以下实施例并结合附图对本发明的结构及功效进行详细说明。
申请人首先在此说明，在通篇说明书中所指的内、外、上、下等有关方向性的形容词，都是以本发明图式中的方向为基准。
以下将通过所列举的实施例配合随附的图式，详细说明本发明的技术内容及特征，其中：
如图1至图4所示，本发明一较佳实施例的安全注射器，包含有：
在本实施例中，主筒10单独即可构成一针筒1；即，广义而言，本发明安全注射器包含有一针筒1，针筒1具有一主筒10。
主筒10具有一筒身11，一容室12连通一装座孔13，一卡座槽14位于装座孔13的内缘，一沉孔15在容室12与卡座槽14之间。
一针座20，具有一座身21，座身21装设于主筒10的装座孔13，一针孔22，一座肩23配合定位于针筒1的沉孔15，一勾杆24其杆身较佳略呈锥形，一连动变形部25呈凸弧形片状连接于勾杆24，以及一卡筒部26接于连动变形部25受其连动并可卡止于针筒1的卡座槽14。
针座20还具有一内缩面211对应配合连动变形部25；即，座身21及/或勾杆24对应连动变形部25处形成略成削除的表面，以提供连动变形部25更多变 形空间。
其中，针座20还具有一凹室27开通于针孔22与连动变形部25之间，针座20还具有一环槽28可供装设一密封环R密封针筒1与针座20之间。
针座20还具有一导流面212相接于凹室27，导流面212也相接于内缩面211，其可使药液更容易流到凹室27。
此外，卡筒部26的另一端还连接于其座身21。
在本实施例中，针座20在其针孔22直接装设一针头N。
本实施例中，针座20中心线到勾杆24外缘的垂直距离L1小于针座20中心线到连动变形部25外缘的垂直距离L2。
一杆塞3，具有一推杆30有一杆身31，以及一封塞40接设于推杆30的杆身31。
封塞40具有一插勾孔41可套接针座20的勾杆24并压缩连动变形部25弹性变形使针座20的卡筒部26不卡止于针筒1的卡座槽14，插勾孔41可卡勾针座20的勾杆24使移动针座20。
针座20的卡筒部26与针筒1的卡座槽14可有效卡合。
而当杆塞3向前推抵使其封塞40的插勾孔41套入针座20的勾杆24与连动变形部25时，即可控制针座20的卡筒部26离开针筒1的卡座槽14而不再卡合，即可顺利回拉。连动变形部25弹性变形时与座身21及勾杆24间的空隙变小，则可减少其间的药液残留。
最后，针座20与针头N也因针座20的连动变形部25与杆塞3的插勾孔41的配合关系而歪斜向一侧，针座20与针头N便不容易再被推出针筒1。
由此，实施例即达到本发明的目的。
而本发明的重点更在于，通过针座20的连动变形部25与凹室27配合，其 设计还可有效减少注射药液残留量。
如图5至图8所示，本发明提供另一种实施例的安全注射器，其与前述实施例大致相同，主要不同点在于：
针座20还具有一接针部29形成在前段。
针头N设于一接件N1，接件N1再接设于针座20的接针部29。
由此，本实施例同样可以达到本发明的目的。
如图9至图12所示，为本发明另一较佳实施例的安全注射器，其与前述实施例大致相同，其主要不同点在于：
针筒1具有一主筒10及一前套50可密封地套接于主筒10共同形成装座孔13，密封环R设于前套50与针座20的座身21之间。
即，主筒10还具有一前套50套接于主筒10前端，本例中卡座槽14及沉孔15形成在主筒10，当然也可改为形成在前套50。利用两个构件组合而成，其可使针筒1的制造更为简单，且能增加其使用形式。
由此，本实施例同样可以达到本发明的目的。
如图13至图19所示，为本发明另一较佳实施例的安全注射器，其与前述实施例大致相同，其主要不同点在于：
针座20具有较大尺寸而另形成一外筒部供装设针头N。
卡筒部26可延伸一部分长度再与连动变形部25相连接。因此，仍能以封塞40的插勾孔41压缩针座20的连动变形部25弹性变形，而以带动卡筒部26卡合与不卡合。
由此，本实施例同样可以达到本发明的目的。
本发明推杆30与封塞40可为组合的之外，或也可为一体的。
本发明密封环R除了如前述为独立构件之外，其也可为一体成形于针筒1 或一体成形于针座20。
安装该实施例的安全注射器时，先将前套50安装到主筒10的前端，从主筒10的后端将针座20塞到主筒10前端，将针座20的连动变形部25卡在主筒10的卡座槽14内，接着在针座20的前端安装接件N1，然后再接件N1上安装针头10，在安装接件N1时，接件N1是与针座20旋接，由于前套50与主筒10是套设的，两者则会发生相对的转动，使得接件N1无法锁紧在针座20上，为了解决这一问题，则可在前套50与主筒10相对应的端面上设置相互配合的齿状结构，前套50端面的齿状结构以及主筒10端面的齿状结构相互啮合，这样，在旋转安装接件N1时，前套50与主筒10不会发生旋转，能将接件N1锁紧在针座20上，继而能将针头N锁紧。
以上所述的任何实施形态均可一个或多个互相搭配使用，均可达到本发明的目的。
综上所述，本发明所提供的安全注射器其确实可稳固定位针座，方便快速回拉针座，并有效减少药液的残留，因此确实达到本发明的目的。
以上实施方式只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人了解本发明的内容并加以实施，并不能以此限制本发明的保护范围，凡根据本发明精神实质所做的等效变化或修饰，都应涵盖在本发明的保护范围内。

Claims (11)

  1. 一种安全注射器，其特征在于包含有：
    一针筒(1)，具有一筒身(11)，一容室(12)，一装座孔(13)，一卡座槽(14)；
    一针座(20)，具有一座身(21)，所述座身(21)装设于所述针筒(1)的装座孔(13)，一针孔(22)，一勾杆(24)，一连动变形部(25)连接于所述勾杆(24)，及一卡筒部(26)接于所述连动变形部(25)受其连动并能卡止于所述针筒(1)的卡座槽(14)；
    一杆塞(3)，具有一杆身(31)，以及一插勾孔(41)能套接所述针座(20)的勾杆(24)并压缩所述连动变形部(25)弹性变形使所述针座(20)的卡筒部(26)不卡止于所述针筒(1)的卡座槽(14)，所述插勾孔(41)能卡勾所述针座(20)的勾杆(24)使移动所述针座(20)。
  2. 如权利要求1所述的安全注射器，其特征在于：所述针座(20)具有一凹室(27)相通所述针孔(22)与连动变形部(25)。
  3. 如权利要求2所述的安全注射器，其特征在于：所述针座(20)具有一导流面(212)相接于所述凹室(27)。
  4. 如权利要求1所述的安全注射器，其特征在于：所述针座(20)具有一内缩面(211)对应所述连动变形部(25)。
  5. 如权利要求1所述的安全注射器，其特征在于：所述针座(20)中心线到勾杆(24)外缘的垂直距离(L1)小于所述针座(20)中心线到连动变形部(25)外缘的垂直距离(L2)。
  6. 如权利要求1所述的安全注射器，其特征在于：所述卡筒部(26)延伸一部分长度与所述连动变形部(25)相连接。
  7. 如权利要求1所述的安全注射器，其特征在于：还包含一密封环(R)， 所述密封环(R)设在所述针筒(1)与针座(20)之间。
  8. 如权利要求1所述的安全注射器，其特征在于：所述针筒(1)具有一主筒(10)及一前套(50)套接于所述主筒(10)。
  9. 如权利要求8所述的安全注射器，其特征在于：所述前套(50)与所述主筒(10)相对应的端面上设置有齿状结构(51、16)，所述前套(50)端面上的齿状结构(51)与所述主筒(10)端面上的齿状结构(16)相互啮合。
  10. 如权利要求8所述的安全注射器，其特征在于：还包含一密封环(R)，所述密封环(R)设于所述前套(50)与针座(20)的座身(21)之间。
  11. 如权利要求1所述的安全注射器，其特征在于：所述针筒(1)具有一沉孔(15)，所述针座(20)具有一座肩(23)配合定位于所述针筒(1)的沉孔(15)。
PCT/CN2016/112099 2016-01-08 2016-12-26 安全注射器 WO2017118308A1 (zh)

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EP16883433.1A EP3400980B1 (en) 2016-01-08 2016-12-26 Safe syringe
BR112018013823-1A BR112018013823B1 (pt) 2016-01-08 2016-12-26 Seringa de segurança
KR1020187020053A KR102203317B1 (ko) 2016-01-08 2016-12-26 안전주사기
ES16883433T ES2869288T3 (es) 2016-01-08 2016-12-26 Jeringa segura
US16/068,216 US10918806B2 (en) 2016-01-08 2016-12-26 Safe syringe
MYPI2018001154A MY193032A (en) 2016-01-08 2016-12-26 Safe syringe
UAA201807590A UA121916C2 (uk) 2016-01-08 2016-12-26 Безпечний шприц
AU2016384940A AU2016384940B2 (en) 2016-01-08 2016-12-26 Safe syringe
MA42866A MA42866A1 (fr) 2016-01-08 2016-12-26 Seringue de sécurité
CA3010878A CA3010878C (en) 2016-01-08 2016-12-26 Safe syringe
RU2018124348A RU2703655C1 (ru) 2016-01-08 2016-12-26 Безопасный шприц
CONC2018/0006591A CO2018006591A2 (es) 2016-01-08 2018-06-26 Jeringa de seguridad
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