WO2020006751A1 - 注射器 - Google Patents

注射器 Download PDF

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Publication number
WO2020006751A1
WO2020006751A1 PCT/CN2018/094831 CN2018094831W WO2020006751A1 WO 2020006751 A1 WO2020006751 A1 WO 2020006751A1 CN 2018094831 W CN2018094831 W CN 2018094831W WO 2020006751 A1 WO2020006751 A1 WO 2020006751A1
Authority
WO
WIPO (PCT)
Prior art keywords
syringe
elastic
casing
rear end
central axis
Prior art date
Application number
PCT/CN2018/094831
Other languages
English (en)
French (fr)
Inventor
叶进民
Original Assignee
群康生技股份有限公司
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 群康生技股份有限公司 filed Critical 群康生技股份有限公司
Priority to PCT/CN2018/094831 priority Critical patent/WO2020006751A1/zh
Publication of WO2020006751A1 publication Critical patent/WO2020006751A1/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
    • A61M5/178—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

Definitions

  • the present invention relates to a syringe, and more particularly to a syringe for forming an injection device in combination with a syringe assembly and providing a safe injection purpose.
  • a syringe assembly In the process of injecting medicines into the patients by medical personnel, in order to reduce the risk of infection due to accidental needle sticks, the syringe assembly must be assisted by a syringe to provide the purpose of safe injection.
  • the presently known structure of a syringe includes an outer casing and a protective sleeve.
  • the protective sleeve group is disposed in the outer casing, and the protective sleeve is capable of retracting and retracting at the front end of the outer casing.
  • the outer shell of the syringe is sleeved on the outside of the syringe of the syringe assembly, and a needle cover is sleeved on the outside of the puncture needle located at the front end of the syringe, and the puncture needle together with the needle on the outside thereof
  • the cover extends into the protective sleeve at the front end of the outer shell, and the front end of the needle cover extends out of the protective cover.
  • the puncture needle at the front end of the syringe assembly provides double safety protection through the needle cover and the protective sleeve to prevent the puncture needle from being inserted and ensure the safety of the injection device.
  • the safety protection function can be provided.
  • the needle cover protrudes from the front end of the protective sleeve, so that medical personnel can directly remove the needle cover.
  • the protective cap of the known syringe must consider the length of the puncture needle, so the protective cover occupies almost two-thirds of the needle cap. As a result, the length of the needle cap protruding from the outer side of the front end of the protective cap is short, which is not conducive to the removal of the needle cap by the medical staff, so that the risk of the medical staff accidentally touching the protective cap is high.
  • the protective sleeve of the existing syringe only provides the telescopic function. After the medical staff completes the human injection operation, the protective sleeve can cover the outside of the lancet by using elastic force. However, the protective cover of the syringe does not have an automatic locking mechanism. Stretchability, so that medical personnel may accidentally touch the protective cover and risk needle sticking.
  • the technical problem to be solved by the present invention is to provide a syringe, which solves the problem that after a conventional syringe is combined with a syringe assembly, a needle cap located at the front end of the syringe assembly is difficult to remove from the protective cover of the syringe.
  • the technical solution provided by the present invention is to provide a syringe for assembling a syringe assembly to constitute an injection device.
  • the syringe assembly is provided with a soft stopper on the outer side of a puncture needle at the front end thereof, and the syringe defines There is a central axis extending axially forward and backward, where the syringe includes:
  • An outer casing includes a casing, a syringe coupling portion, and a fixing portion.
  • the casing forms a channel penetrating along the central axis direction, and the outer peripheral surface of the casing is opposite to the central axis at two sides, respectively.
  • An outwardly protruding operation portion is formed.
  • the front end of the housing has a connecting section.
  • the syringe coupling portion and the fixing portion are formed at the rear end of the housing.
  • the syringe coupling portion is used to connect the syringe.
  • a needle cover that can be detachably connected to a connecting section at the front end of the outer shell.
  • the needle cover includes an outer cover body, an inner cover body, and a spring hook portion.
  • the inner cover body is formed in the outer cover body. There is a gap between the outer peripheral surface of the inner cover body and the inner peripheral surface of the outer cover body.
  • the rear end of the inner cover body forms a rear port of the inner cover, which is used to provide a soft plug of the syringe assembly.
  • the spring hook portion is formed at the rear end of the inner cover body and extends outside the rear end of the outer cover body. The spring hook portion is used to connect the soft plug of the syringe assembly, so that the needle cover can Remove the front end of the outer case together with the soft plug; and
  • the elastic protection member is arranged in the outer shell and connected to the needle cover.
  • the elastic protection member includes a sheath body, a syringe connection portion and an elastic body.
  • the syringe connection portion is located in the sheath body.
  • the syringe connecting portion includes a connecting base, and the elastic body is located between the sheath body and the connecting base of the syringe connecting portion, and the syringe connecting portion is fixed in the outer casing and connected to the syringe.
  • the sheath body passes through the connecting section at the front end of the outer casing and extends into the needle cover. When the needle cover is detached from the front end of the outer casing, the sheath body is provided with elasticity through the elastic body.
  • the sheath body can be telescopically moved along the central axis direction at the front end of the outer casing.
  • two limiting flanges are formed in the inner side wall of the front section of the casing of the outer casing, and the two limiting flanges are respectively located on opposite sides of the central axis;
  • the sheath body includes A set of bodies penetrating the central axis, the rear end of the set of bodies forms two limit stop pieces, the two limit stop pieces respectively correspond to the two limit flanges, and the two limit stop pieces can follow the limit
  • the sheath body moves in the outer casing, and the limit stop can be moved to a position forward of the corresponding limit flange when the sheath body is ejected.
  • the connecting base of the elastic protective member includes two fixed plate bodies spaced back and forth along the central axis, and each of the fixed plate bodies has a half-ring body with a gap, and the two fixed plates
  • the notch of the body is on the same side as the central axis;
  • the elastic body includes an elastic base, a front connecting portion, and a rear connecting portion.
  • the elastic base includes at least one elastic unit, and the front connecting portion and the rear connecting portion are respectively formed.
  • the front connection part is connected to the rear end of the sheath body, and the rear connection part is connected to the front end of the syringe connection part;
  • the elastic unit is formed into a V-shaped curved body, And it has elasticity of compression and recovery back and forth along the central axis, and the curved shape of the curved body of the elastic unit corresponds to the curved shape of the half-ring body of the fixed plate body.
  • the elastic base of the elastic body of the elastic protection member has a plurality of the elastic units, and the plurality of the elastic units are sequentially connected from the back.
  • the connecting section at the front end of the housing has two snap-in holes, and the two snap-in holes are radially oppositely arranged with respect to the central axis
  • the syringe coupling portion includes a plurality of syringe hooks.
  • a plurality of the syringe hooks are formed on the peripheral edge of the rear end of the casing and have elasticity of bending deformation.
  • the plurality of syringe hooks are used to connect the syringe assembly;
  • the fixing portion includes two bending deformation elastic fixings.
  • the syringe connection part of the elastic protection member includes two connections A plate body, the two connection plate bodies are respectively disposed on two sides of the connection base opposite to the central axis, and the rear ends of the two connection plate bodies each have a latching projecting rearwardly from the rear end of the connection base.
  • An elastic piece, the clip-made elastic piece has a snap flange, the clip-shaped elastic piece has elasticity of bending deformation and recovery, and the clip flange of each of the clip elastic pieces can be fixed with each of the rear ends of the outer shell.
  • the fixed card slot of the convex piece corresponds to the card combination, so that the pin The connection portion is fixed to the rear end of the outer shell.
  • the side wall of the connecting section of the outer shell forms an elongated guide hole
  • the elongated guide hole extends parallel to the central axis direction and communicates radially from the outer surface of the housing to the Channel
  • the inner wall of the casing forms a guide rail, which extends from the inner wall of the front section of the casing to the inner wall of the rear end
  • the sheath body includes a set of bodies penetrating along the central axis.
  • the side wall has a spring buckle that extends into the elongated guide hole.
  • the rear end of the sleeve body forms a connecting piece protruding rearwardly.
  • the connecting piece is connected to the elastic body and the connecting piece.
  • a guide groove is formed on the outer side of the casing, and the guide groove is sleeved on a guide rail on the inner side wall of the casing of the outer casing; a side of the syringe connection portion of the elastic protection member forms a guide groove, and the guide groove It is sleeved on the guide rail of the inner wall of the casing of the outer casing.
  • a viewing window is formed in a side wall of the middle section of the casing of the outer casing, and the viewing window is communicated radially from the outer surface of the casing to the channel.
  • the housing forms two pairs of positioning grooves in the side wall of the channel.
  • the two positioning grooves are located on opposite sides of the channel and communicate with each other.
  • the connecting section at the front end of the housing has two cards.
  • a connecting hole, and the two engaging holes respectively communicate with the two alignment grooves respectively;
  • the elastic hook portion of the needle cover includes a plurality of hooks, and the plurality of hooks are distributed on the peripheral edge of the rear end of the inner cover and are convex toward the rear
  • the rear end of the inner cover body forms a rearwardly protruding abutting tab, and the abutting tab and a plurality of the claws are formed on the inner cover body at an equal angular distribution with respect to the central axis.
  • the elastic hook portion extends into the channel of the outer casing, and the two latching spring pieces of the needle cover respectively extend into the two positioning grooves of the outer casing and are engaged with the engaging holes at the front end of the casing.
  • the needle cover group is arranged at a connecting section at the front end of the outer casing, and the needle cover can be detached from the connecting section at the front end of the outer casing.
  • the front end of the outer cover body has a front end plate, and the inner cover body extends rearwardly from the back surface of the front end plate.
  • the inner cover body has a set of space provided along the set of space.
  • the center axis extends forward into the front plate; the rear end of the outer cover of the needle cover protrudes rearwardly from a plurality of alignment inserts, and the front end surface of the connection section of the shell of the outer shell forms a plurality of alignment recesses.
  • a plurality of the positioning recesses respectively provide a plurality of corresponding positioning inserts.
  • the syringe assembly is installed in the syringe from the back of the syringe from the back to the front, and the soft plug of the syringe assembly is set on the outside of the puncture needle.
  • the needle cap, the elastic protective member and the soft plug are jointly provided with safety protection to the puncture needle to ensure its safety in use.
  • the needle cap of the syringe is extended behind the soft plug set on the outside of the lancet by its spring hook portion.
  • the needle cap located at the front of the outer casing is taken out, and the The structure of the elastic hook hooks the soft plug sleeved on the outer side of the lancet, so that the needle cover can be pulled out from the front end of the outer shell together with the soft plug, so that the syringe assembly installed in the syringe is originally set on the outer side of the lancet.
  • the soft plug can be easily pulled out, and can avoid accidentally touching the sheath body of the elastic protective member.
  • the sheath body of the elastic protective member of the syringe maintains the cover on the outside of the puncture needle of the syringe assembly to prevent the puncture needle from being exposed. Therefore, it can effectively solve the problems that after the existing syringe is combined with the syringe assembly, the needle cap located at the front end of the syringe assembly is difficult to remove from the protective cap of the syringe, and the risk that the medical staff accidentally touches the protective cap is high.
  • the syringe of the present invention can further use the inner wall of the casing of the outer shell to form a limiting flange, and the rear end of the sheath body of the elastic protection member has a structure of a limiting stopper.
  • the limit stop can be moved by the limit flange on the inner side wall of the shell of the outer shell
  • a locking function is provided to prevent the sheath body from moving backward, so that the sheath body is maintained in a state of being sheathed outside the lancet. Ensure that the lancet is not exposed for use.
  • the syringe of the present invention can further utilize the connecting base of the elastic protective member to include two fixed plate bodies spaced back and forth along the central axis, each of the fixed plate bodies has a half-ring body with a gap, and two The notch of the fixing plate body is on the side facing the central axis;
  • the elastic body includes an elastic base portion and a front connecting portion and a rear connecting portion which are respectively arranged before and after the elastic base portion, and the front connecting portion is connected to the rear end of the connecting piece body of the sheath body, The rear connecting part is connected to the front end of the syringe connecting part.
  • the elastic base includes at least one elastic unit, which forms a V-shaped curved body and has compression and recovery elasticity.
  • the curved shape of the curved body of the elastic unit Corresponding to the curved shape of the half-ring body of the fixed plate body. Thereby, the shape and structure of the elastic protector can be simplified, and it can be easily molded and manufactured.
  • FIG. 1 is a schematic perspective view of an embodiment of a syringe according to the present invention.
  • FIG. 2 is a schematic perspective view of the syringe embodiment shown in FIG. 1 at another viewing angle.
  • FIG. 3 is an exploded perspective view of the syringe embodiment shown in FIG. 1 and FIG. 2.
  • FIG. 4 is a schematic exploded perspective view (1) of the embodiment of the syringe shown in FIGS. 1 and 2 at another viewing angle.
  • FIG. 5 is a schematic exploded perspective view (2) of the embodiment of the syringe shown in FIGS. 1 and 2 at another viewing angle.
  • FIG. 6 is a schematic side perspective view of the outer casing of the syringe embodiment shown in FIG. 1 and FIG. 4.
  • FIG. 7 is a schematic sectional side view of the syringe embodiment shown in FIGS. 1 to 5 after being assembled.
  • FIGS. 1 to 5 are schematic side plan views of the embodiment of the syringe shown in FIGS. 1 to 5 before being combined with a syringe assembly.
  • FIG. 9 is a schematic perspective view of the injection device comprising the syringe embodiment and the syringe assembly shown in FIGS. 1 to 5.
  • FIG. 10 is a schematic side sectional view of the injection device composed of the syringe embodiment and the syringe assembly shown in FIGS. 1 to 5.
  • FIG. 11 is a schematic diagram of an initial state of an injection device consisting of the syringe embodiment and the syringe assembly shown in FIGS. 1 to 5 before use.
  • FIG. 12 is a reference view of the injection device composed of the embodiment of the syringe shown in FIG. 1 to FIG. 5 combined with the syringe assembly after removing the needle cap and the soft plug of the syringe assembly.
  • FIG. 13 is a schematic side sectional view of the injection device composed of the embodiment of the syringe shown in FIGS. 1 to 5 combined with a syringe assembly after the needle cap and the soft plug of the syringe assembly are removed.
  • FIG. 14 is a reference view (1) of a human body injection using the injection device composed of the syringe embodiment and the syringe assembly shown in FIGS. 1 to 5.
  • FIG. 15 is a reference diagram (2) of a human body injection using the injection device composed of the syringe embodiment and the syringe assembly shown in FIGS. 1 to 5.
  • FIG. 16 is a reference view (3) of a human body injection using the injection device composed of the syringe embodiment and the syringe assembly shown in FIGS. 1 to 5.
  • FIG. 17 is a reference view of the use state of the sheath body after the injection device composed of the syringe embodiment and the syringe assembly shown in FIGS. 1 to 5 is removed from the human body after the injection.
  • FIG. 18 is a reference view of the ejected sheath body being locked after the injection device consisting of the syringe embodiment and the syringe assembly shown in FIGS. 1 to 5 is removed from the human body after the injection.
  • Inner lid body 220 set up space
  • the syringe of the present invention is used for assembling a syringe assembly with a medicinal solution to constitute an injection device. As shown in FIG. 1 to FIG. 5, it discloses an embodiment of a syringe of the present invention.
  • the syringe 1 includes a casing 10, a needle cap 20, and an elastic protection member 30.
  • the syringe 1 defines a central axis 1A.
  • the central axis 1A extends axially forward and backward.
  • the outer casing 10 includes a casing 11, a syringe coupling portion 12, and a fixing portion 13.
  • a passage 110 is formed in the casing 11 and penetrates along the central axis 1A.
  • Two sides of the outer peripheral surface of the casing 11 opposite to the central axis 1A are respectively formed with an outwardly protruding operation portion 14.
  • the two operation portions 14 provide a part for a medical staff to abut against, and the front portion of the casing 11 is a
  • the connecting section 111 is used to connect the needle cover 20, the syringe coupling portion 12 and the fixing portion 13 are formed at the rear end of the housing 11, and the syringe coupling portion 12 is used to connect the In the syringe assembly, the fixing portion 13 is used for assembling the elastic protection member 30.
  • the connecting section 111 at the front end of the housing 11 has two snap-in holes 112, and the two snap-in holes 112 are arranged radially opposite to the central axis 1A.
  • the syringe coupling portion 12 includes a plurality of syringe hooks 121.
  • the plurality of syringe hooks 121 are formed on the peripheral edge of the rear end of the casing 11 and have elasticity for bending deformation.
  • the fixing portion 13 includes two fixing protrusions 131.
  • the two fixing protrusions 131 project from the peripheral edge of the rear end of the housing 11 toward the rear and are arranged radially opposite to each other.
  • the two fixing protrusions 131 have elasticity of bending deformation.
  • Each of the fixing protrusions 131 is provided with a fixing slot 132 for engaging the elastic protection member 30.
  • the casing 11 forms a viewing window 15 in a side wall of the middle section, and the viewing window 15 is communicated radially from the outer surface of the casing 11 to The channel 110.
  • An elongated guide hole 16 is formed on the side wall of the connecting section 111 at the front end of the casing 11 opposite to the viewing window 15.
  • the elongated guide hole 16 extends parallel to the center axis 1A and extends from the shell.
  • the outer surface of the body 11 communicates radially to the channel 110.
  • a guide rail 17 can also be formed on the inner wall of the casing 11 on the side opposite to the viewing window 15.
  • the guide rail 17 extends from the inner wall of the front section of the housing 11 to the inner wall of the rear end. At least one limiting flange 18 is formed in an inner side wall of the front section of the casing 11 for limiting the movement stroke of the elastic protection member 30.
  • the casing 11 forms two alignment grooves 19 in a side wall of the channel 110, and the two alignment grooves 19 are located on opposite sides of the channel 110 and communicate with each other.
  • the two connecting holes 112 of the connecting section 111 at the front end of the housing 11 respectively communicate with the channel 110.
  • the needle cover 20 is a connecting section 111 detachably connected to the front end of the outer casing 10.
  • the needle cover 20 includes an outer cover body 21, an inner cover body 22, and a spring hook portion 23.
  • the outer cover body 21 has an accommodation space 210 that extends to the rear end of the outer cover body 21.
  • a rear port is formed.
  • the inner cover 22 is formed in the accommodating space 210 of the outer cover 21.
  • a gap is formed between an outer peripheral surface of the inner cover 22 and an inner peripheral surface of the outer cover 21.
  • the front end of the outer cover 21 has a front plate 24, the inner cover 22 extends rearwardly from the back of the front plate 24, and the group is provided with a space 220. Extending forward along the central axis 1A to the front end plate 24.
  • the elastic hook portion 23 includes a plurality of hook claws 231.
  • the plurality of hook claws 231 are disposed on a peripheral edge of the rear end of the inner cover 22 and protrude rearward.
  • the rear end of the inner cover 22 also forms an abutting tab 25 protruding rearward, and the abutting tab 25 and the plurality of hooks 231 are distributed at an equal angle with respect to the center axis 1A.
  • the rear end of the inner cover 22 is formed in a line at the peripheral edge of the rear end.
  • the rear end of the outer cover 21 also protrudes two latching spring pieces 26 toward the rear.
  • the two latching spring pieces 26 are respectively disposed on two sides of the outer cover 21 opposite to the central axis 1A.
  • the needle cover 20 is detachably installed at the front end of the outer casing 10, wherein the abutting tab 25 of the needle cover 20 and the elastic hook portion 23 extend.
  • the two latching springs 26 of the needle cover 20 respectively extend into the two positioning grooves 19 of the outer casing 10 and are engaged with the engaging holes 112 at the front end of the casing 11
  • the needle cover 20 is assembled at the connecting section 111 at the front end of the outer casing 10, and the needle cover 20 can be detached from the connecting section 111 at the front end of the outer casing 10.
  • the rear end of the outer cover body 21 may further project a plurality of alignment inserts 27 rearward, and a plurality of the alignment inserts 27 are distributed on Two side edges of the latching spring piece 26, a front end surface of the connecting section 111 of the housing 11 of the outer shell 10 forms a plurality of alignment recesses 113, and a plurality of the alignment recesses 113 respectively provide a plurality of the alignment inserts 27.
  • Corresponding insertion is used to assist the coupling between the needle cover 20 and the outer shell 10.
  • the elastic protection member 30 is assembled in the outer casing 10 and connected to the needle cover 20.
  • the elastic protection member 30 includes a sheath body 31 and a syringe connection portion. 32 and an elastic body 33.
  • the syringe connecting portion 32 is located behind the sheath body 31.
  • the elastic body 33 is located between the sheath body 31 and the syringe connecting portion 32 and connects the sheath body 31 and
  • the syringe connecting portion 32 is fixed to the outer casing 10 with the syringe connecting portion 32.
  • the sheath body 31 passes through the connecting section 111 at the front end of the outer casing 10 and extends into the needle cover 20.
  • the elasticity provided by the elastic body 33 to the sheath body 31 enables the sheath body 31 to be located at the front end of the outer shell 10 along the center axis 1A direction (front-rear axis). Telescopic activity.
  • the sheath body 31 includes a sheath body 311 penetrating along the central axis 1A (front-rear axial direction).
  • a side wall of the sheath body 311 has a The elastic buckle 312 extends into the elongated guide hole 16 of the outer shell 10, so that the linear guide stroke of the sheath body 31 is restricted by the elongated guide hole 16.
  • An engaging piece body 313 protruding rearward is formed at the end, and the engaging piece body 313 is connected to the elastic body 33.
  • An outer side of the engaging piece body 313 forms a guide groove 314, and the guide groove 314 of the sleeve body 311 is sleeved on
  • the guide rail 17 on the inner wall of the casing 11 of the outer casing 10 can move linearly forward and backward along the guide rail 17.
  • the rear end of the sleeve body 311 can also form at least one limit stop piece 315.
  • the limit stop piece 315 has the elasticity of bending deformation and reset.
  • the limit stop piece 315 can be matched with the shell of the outer shell 10.
  • the limiting flange 18 in the inner side wall of 11 generates a locking function.
  • the rear end of the sleeve body 311 forms two limiting stops 315, and the two limiting stops 315 are respectively located in the The opposite sides of the front and rear axial directions (that is, the central axis) of the sleeve body 311.
  • the limit stop 315 is located radially inward of the limit flange 18, and the limit stop 315 can move when the sheath body 31 is ejected forward by the elastic force provided by the elastic body 33.
  • the engaging piece body 313 is located on a side between the two limiting piece 315, and the elastic buckle 312 is connected to the engaging piece.
  • the sheet body 313 is located on the same side of the sleeve body 311.
  • the syringe connection portion 32 includes a connection base portion 321 and two connection plate bodies 320, and the two connection plate bodies 320 are respectively disposed on the connection base portion 321.
  • the rear ends of the two connecting plates 320 each have a clip spring 325 protruding rearward from the rear end of the connection base 321, and the clip spring 325 has a latch.
  • the flange 326 and the clip spring 325 have the elasticity of bending deformation and recovery.
  • the clip flanges 326 of the clip spring 325 can respectively correspond to the fixing clip grooves 132 of the fixing protrusion 131 at the rear end of the outer casing 10. The combination is fixed so that the syringe connection portion 32 is fixed in the rear end of the outer casing 10.
  • connection base 321 has two fixed plate bodies 322 spaced back and forth along the central axis 1A.
  • Each of the fixed plate bodies 322 has a gap.
  • a half-ring body of 323, the notches 323 of the two fixing plates 322 are on the same side of the central axis 1A.
  • a guide slot 324 is formed on the opposite sides of the two fixing plates 322 opposite to the notch 323.
  • the guide slot 324 of the connection base 321 is sleeved on the guide rail 17 on the inner side wall of the casing 11 of the outer casing 10. Up and can move back and forth along the guide rail 17 linearly.
  • the elastic body 33 includes an elastic base portion 331, a front connecting portion 332, and a rear connecting portion 333.
  • the elastic base portion 331 includes at least one elastic unit 3310.
  • the front connecting portion 332 and the rear connecting portion 333 are respectively formed at the front end and the rear end of the elastic base portion 331.
  • the connecting portion 332 is connected to the rear end of the engaging piece body 313 of the sheath body 31, and the rear connecting portion 333 is connected to the front end of the syringe connecting portion 32.
  • the elastic unit 3310 forms a V-shaped curved body, and has elasticity for compression and recovery along the central axis 1A.
  • the curved shape of the curved body of the elastic unit 3310 Corresponding to the curved shape of the half-ring body of the fixed plate body 322.
  • the syringe assembly 40 includes a syringe 41 filled with a medicinal solution, and a piston pusher is installed in the syringe 41.
  • a rod 42 is provided at the front end of the syringe 41 with a puncture needle 43 and a soft plug 44 sleeved on the outside of the puncture needle 43.
  • the syringe assembly 40 is installed from the rear end of the syringe 1 to the syringe 1 from back to front Inside, the soft plug 44 of the syringe assembly 40 extends into the assembly space 220 of the inner cover 22 of the needle cover 20, the hook portion 23 of the needle cover 20 extends behind the soft plug 44, and the syringe 41 A plurality of the syringe hooks 121 located in the elastic protection member 30 and at the rear end of the outer casing 10 are respectively hooked to the rear end of the syringe 41 and fixed, and the piston pusher 42 extends outside the rear end of the outer casing 10. In this way, during the operation before injection, the lancet 43 is provided with multiple safety protections through the needle cover 20, the elastic protective member 30 and the soft plug 44 to avoid the possibility of the lancet 43 being inserted out.
  • the needle cap 20 at the front end of the outer casing 10 is first pulled out, and the elastic hook portion 23 of the needle cap 20 is hooked and sleeved on the lancet. 43
  • the soft plug 44 on the outer side causes the needle cap 20 to be pulled out together with the soft plug 44.
  • the sheath body 31 of the elastic protection member 30 extends beyond the front end of the outer casing 10 and is sleeved on the syringe assembly 40
  • the outside of the lancet 43 prevents the lancet 43 from being exposed to ensure the safety before use.
  • the needle guard 20 is restricted in front of the sheath body 31 of the elastic protective member 30, and in this initial state, the limit stop 315 in the elastic protective member 30 located at the rear end of the sheath body 31 is the limit of the outer shell 10 Since the flange 18 is located radially inward, the sheath body 31 can freely expand and contract at the front end of the outer shell 10.
  • the sheath body 31 at the front end of the syringe 1 is extended to the planned injection site. In the process, the sheath body 31 still covers the puncture needle 43 Covered inside to ensure safe use.
  • the piston protector 30 is pressed by the piston pusher 42 on the back side of the syringe assembly 40, so that the elastic protective member 30 is compressed by the compression force to compress the elastic body 33, and the sheath body 31 retracts to In the housing 11 of the outer casing 10, the lancet 43 extends beyond the front end of the sheath body 31 and penetrates into the body of the person to be injected, injects the drug into the person to be injected, and continuously presses the plunger 42 of the syringe assembly 40, The medicinal solution in the syringe 41 is injected into the body of the person to be injected through the puncture needle 43. During the injection process, the medical personnel can observe the advancement amount of the medicine in the syringe 41 through the viewing window 15 of the outer casing 10.
  • the injection device is pulled back, and at the same time, the lancet 43 at the front end of the syringe assembly 40 is withdrawn from the body of the injectee
  • the sheath body 31 of the elastic protective member 30 provides elastic force through the elastic body 33, and pushes the sheath body 31 to pop out from the front end of the outer casing 10, so that the lancet 43 is covered in the sheath body 31.
  • the limit stop 315 at the rear end of the sheath body 31 is moved forward as the sheath body 31 is ejected
  • the limit stop 315 can be moved to the front of the limit flange 18 by the limit flange 18 on the inner side wall of the housing 11 of the outer shell 10, and can be blocked by the limit flange 18 behind the limit stop 315.
  • Limiting the position produces a locking function that prevents the sheath body 31 from moving backward, so that the sheath body 31 is maintained in a state of being sheathed outside the lancet 43 to ensure the safety of use when the lancet 43 is not exposed.
  • the syringe assembly can be installed in the syringe from the back to the front, and the soft plug sleeved on the outside of the puncture needle is inserted into the syringe assembly.
  • the needle cap Before the injection, the needle cap, the elastic protective member and the soft stopper are jointly provided to protect the puncture needle to ensure its safety in use.
  • the needle cap of the syringe of the present invention extends behind the soft plug sleeved on the outside of the lancet by its spring hook portion.
  • the needle cap located at the front end of the outer casing is taken out and the needle cap is used.
  • the elastic hook at the rear end is hooked to the structure of the soft plug sleeved on the outside of the lancet, so that the needle cover can be pulled out from the front end of the outer shell together with the soft plug, so that the syringe assembly installed in the syringe is originally set on the lancet.
  • the outer soft plug can be easily pulled out, and can avoid accidentally touching the sheath body of the elastic protector.
  • the sheath body of the elastic protector of the syringe maintains the cover on the outside of the puncture needle of the syringe assembly, and prevents the puncture needle from being exposed.
  • the syringe of the present invention can further use the inner wall of the casing of the outer shell to form a limiting flange, and the rear end of the sheath body of the elastic protection member has a structure of a limiting stopper.
  • the limit stop can pass through the limit flange on the inner side wall of the casing of the outer shell. Move to the front of the limiting flange, and through the blocking limit of the limiting flange behind the limiting baffle, a locking function is prevented to prevent the sheath body from moving backwards, so that the sheath body is maintained in a state of being sheathed outside the lancet. To ensure the safety of the needles from being exposed.

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Abstract

一种注射器(1)，其用于提供针筒组件(40)组设其中而构成注射装置，注射器(1)包括有外套壳(10)、针盖(20)与弹性保护件(30)，针盖(20)是可拆组地连接于外套壳(10)的前端，弹性保护件(30)装设于外套壳(10)内部且伸入针盖(20)内，针筒组件(40)装设于注射器(1)时，套设于针筒(41)前端的刺针(43)的外侧的软塞(44)伸入针盖(20)内，使针盖(20)、弹性保护件(30)前端的护套本体(31)与软塞(44)三者共同对刺针(43)提供安全防护，欲注射前，自外套壳(10)的前端拆下针盖(20)，并利用针盖(20)后端的弹勾部(23)一同拉出软塞(44)，使套设于刺针(43)外侧的软塞(44)易拆除，护套本体(31)能位于刺针(43)外侧防护，且护套本体(31)能随着注射动作而伸缩。

Description

注射器 技术领域
本发明涉及一种注射器，尤指一种用于结合针筒组件构成一注射装置，并提供安全注射用途的注射器。
背景技术
在医护人员对病患注射药剂的过程中，为了降低医护人员意外被针扎而遭受感染的风险，针筒组件必须通过一注射器的辅助，提供安全注射的目的。目前公知的注射器的组成构造，其包含一外套壳及一保护套，该保护套组设于该外套壳中，且保护套能于该外套壳的前端前后伸缩活动。
该注射器与针筒组件组成注射装置时，是以该注射器的外套壳套设于针筒组件的针筒外侧，位于针筒前端的刺针的外侧套设有一针盖，且刺针连同其外侧的针盖伸入外套壳前端的保护套中，针盖的前端伸出保护套。当该注射装置于注射前，针筒组件前端的刺针通过针盖与保护套提供双重安全防护，避免刺针插出，确保注射装置的使用安全性。
前述已知的注射器与针筒组件组合后，虽然能利用保护盖套设于针筒组件的刺针及其外侧的针盖外侧提供安全防护的功能。而且为便于针筒组件的针盖拔取，以及保护盖必须对刺针与针盖提供安全防护功能，一般而言，针盖伸出保护套的前端，提供医护人员能够直接拔取针盖。然而，已知注射器的保护盖必须考虑刺针的长度，故保护套几乎占据了针盖三分之二的部分。造成针盖伸出保护盖的前端外侧的长度偏短，不利于医护人员拔取针盖，以致医护人员误触保护盖的风险偏高，已知注射器的使用安全性仍有不足之处。
此外，现有注射器的保护套仅提供伸缩功能，当医护人员完成人体注射作业后，保护套虽能利用弹力而罩套于刺针的外侧，但是，注射器的保护盖不具备自动锁定机构，仍具备伸缩性，以致医护人员有误触保护盖、被针扎的风险。
发明内容
本发明所要解决的技术问题是：提供一种注射器，解决现有注射器结合针筒组件后，位于针筒组件前端的针盖难以自注射器的保护盖中取出的问题。
本发明所提出的技术解决方案是：提供一种注射器，其用于组接一针筒组件构成一 注射装置，该针筒组件于其前端的一刺针的外侧套设有一软塞，该注射器界定有前后轴向延伸的一中心轴线，其中，注射器包括：
一外套壳，其包括一壳体、一针筒结合部以及一固定部，该壳体中形成沿着该中心轴线方向贯通的一通道，该壳体的外周面相对于该中心轴线的两侧分别形成一朝外凸伸的操作部，该壳体的前端具有一连接段，该针筒结合部与该固定部是形成于该壳体的后端，该针筒结合部用于连接该针筒组件；
一针盖，其能拆组地连接于该外套壳前端的连接段，该针盖包括一外盖体、一内盖体以及一弹勾部，该内盖体是成形于该外盖体内，该内盖体的外周面与该外盖体的内周面之间具有一间距，该内盖体的后端形成一内盖后端口，该盖后端口用于提供该针筒组件的软塞伸入其中，该弹勾部是形成于该内盖体的后端且伸出该外盖体的后端外侧，该弹勾部用于连接该针筒组件的软塞，使该针盖能连同该软塞一同自该外套壳的前端拔除；以及
一弹性保护件，其组设于该外套壳中且连接该针盖，该弹性保护件包括一护套本体、一针筒连接部以及一弹性体，该针筒连接部是位于该护套本体的后方，该针筒连接部包括一连接基部，该弹性***于该护套本体与该针筒连接部的连接基部之间，该针筒连接部固定于该外套壳中且连接该针筒结合部，该护套本体通过该外套壳前端的连接段并伸入该针盖内，于该针盖自该外套壳的前端拆离的状态下，通过该弹性体对该护套本体提供弹性，使该护套本体能于该外套壳的前端沿着该中心轴线方向伸缩活动。
如上所述的注射器中，该外套壳的壳体的前段的内侧壁中形成两限位凸缘，两所述限位凸缘分别位于该中心轴线的相对两侧；该护套本体包括沿着该中心轴线贯通的一套体，该套体的后端形成两限位挡片，两所述限位挡片分别对应于两所述限位凸缘，两所述限位挡片能随该护套本体于该外套壳中运动，于该护套本体被弹出的状态下，所述限位挡片能移动至相对应的所述限位凸缘的前方位置。
如上所述的注射器中，该弹性保护件的连接基部包含沿着该中心轴线前后间隔排列的两固定板体，每一所述固定板体具有一具有缺口的半环体，两所述固定板体的缺口同朝该中心轴线的一侧；该弹性体包括一弹性基部、一前连接部以及一后连接部，该弹性基部包括至少一弹性单元，该前连接部与该后连接部分别成形于该弹性基部的前端与后端，该前连接部连接该护套本体的后端，该后连接部连接该针筒连接部的前端；所述弹性单元是形成一V形的弧曲体，并具有沿着该中心轴线前后压缩与回复的弹性，所述弹性单元的弧曲体的弯弧型态对应于所述固定板体的半环体的弯曲型态。
如上所述的注射器中，该弹性保护件的弹性体的弹性基部具有多个所述弹性单元，多个所述弹性单元是由前往后依序连接。
如上所述的注射器中，该壳体前端的连接段中具有两卡接孔，两该卡接孔相对于该中心轴线呈径向相对排列，该针筒结合部包括多个针筒卡勾，多个该针筒卡勾是分布形成于该壳体的后端周缘且具备弯曲变形的弹性，多个该针筒卡勾用以连接该针筒组件；该固定部包括两弯曲变形弹性的固定凸片，两该固定凸片是自该壳体的后端周缘朝后凸伸且径向相对排列，所述固定凸片设有一固定卡槽；该弹性保护件的针筒连接部包括两连接板体，两所述连接板体分别设置于该连接基部的相对该中心轴线的两侧，两所述连接板体的后端各具有自该连接基部的后端朝后凸伸的一卡制弹片，所述卡制弹片具有一卡掣凸缘，所述卡制弹片具有弯曲变形与回复的弹性，各所述卡制弹片的卡掣凸缘能分别与该外套壳后端的各所述固定凸片的固定卡槽对应卡接组合，使该针筒连接部固定于该外套壳的后端内。
如上所述的注射器中，该外套壳的连接段的侧壁形成一长形导引孔，该长形导引孔平行于该中心轴线方向延伸且自该壳体的外表面径向连通至该通道，该壳体的内侧壁形成一导轨，该导轨自该壳体前段的内侧壁延伸至后端的内侧壁；该护套本体包括沿着该中心轴线贯通的一套体，该套体的一侧壁具有一弹扣，该弹扣伸入该长形导引孔中，该套体的后端形成朝后凸伸的一衔接片体，该衔接片体连接该弹性体，该衔接片体的外侧面形成一导槽，该导槽套设于该外套壳的壳体的内侧壁的导轨上；该弹性保护件的针筒连接部的侧边形成一导槽口，所述导槽口套设于该外套壳的壳体内侧壁的导轨上。
如上所述的注射器中，该外套壳的壳体的中段的一侧壁中形成一观视窗，该观视窗自该壳体的外表面径向连通至该通道。
如上所述的注射器中，该壳体于该通道的侧壁中形成两对位槽，两该对位槽位于该通道的相对两侧且相连通，该壳体前端的连接段中具有两卡接孔，两该卡接孔分别对应连通两该对位槽；该针盖的弹勾部包括多个勾爪，多个该勾爪分布设置于该内盖体的后端周缘且朝后凸伸；该内盖体的后端形成一朝后凸伸的抵靠凸片，该抵靠凸片与多个该勾爪相对于该中心轴线呈等角度分布排列地形成于该内盖体的后端周缘；该外盖体的后端朝后凸伸两卡接弹片，两该卡接弹片分别设置于该外盖体相对于该中心轴线的两侧；该针盖的抵靠凸片与该弹勾部伸入该外套壳的通道中，该针盖的两该卡接弹片分别对应伸入该外套壳的两该对位槽，并与该壳体前端的卡接孔卡接配合，使该针盖组设于该外套壳前端的连接段，且该针盖能与该外套壳前端的连接段拆离。
如上所述的注射器中，该外盖体的前端具有一前端板，该内盖体自该前端板的背面朝后延伸，该内盖体中具有一组设空间，该组设空间沿着该中心轴线朝前延伸至该前端板中；该针盖的外盖体的后端朝后凸伸多个对位插片，该外套壳的壳体的连接段的前端面形成多个对位凹部，多个该对位凹部分别提供多个该对位插片对应插设。
本发明可达成的有益功效是：
1、当该注射器结合针筒组件组成注射装置时，该针筒组件自该注射器的后端由后往前地装设于该注射器内，该针筒组件中套设于刺针外侧的软塞伸入该针盖内，在注射前，通过针盖、弹性保护件与软塞三者共同对刺针提供安全防护，确保其使用安全性。
2、该注射器的针盖借其弹勾部伸至套设于刺针外侧的软塞后方，当医护人员欲进行人体注射前，将位于外套壳前端的针盖拔取的同时，利用针盖后端的弹勾部勾接套设于刺针外侧的软塞的构造，使针盖能连同软塞一起自外套壳前端拉出，使装设于注射器内的针筒组件中，原套设于刺针外侧的软塞能够轻易地被拔取，且能避免误触弹性保护件的护套本体，该注射器的弹性保护件的护套本体维持罩盖于针筒组件的刺针外侧，避免刺针外露。故能有效解决现有注射器结合针筒组件后，位于针筒组件前端的针盖难以自注射器的保护盖中取出，以及医护人员误触保护盖的风险偏高等问题。
再者，本发明的注射器还能进一步利用外套壳的壳体内侧壁形成限位凸缘，该弹性保护件的护套本体的后端具有限位挡片的构造，待完成注射作业后，后拉注射装置，针筒组件前端的刺针自被注射者的身体抽离时，该弹性保护件的护套本体通过弹性体提供弹力，推抵护套本体自外套壳的前端弹出，使刺针被罩盖于护套本体内，且护套本体后端的限位挡片随着护套本体被弹出而朝前运动过程中，限位挡片能通过外套壳的壳体内侧壁的限位凸缘而移至限位凸缘的前方，通过限位凸缘于限位挡片后方的阻挡限位，产生阻止该护套本体朝后运动的锁定功能，使护套本体维持套设于刺针外侧的状态，确保刺针不外露的使用安全性。
此外，本发明注射器还能进一步利用该弹性保护件的连接基部包含沿着该中心轴线前后间隔排列的两固定板体，每一所述固定板体具有一具有缺口的半环体，两所述固定板体的缺口同朝该中心轴线的一侧；该弹性体包括弹性基部以及分设于弹性基部前后的前连接部与后连接部，以前连接部连接护套本体的衔接片体的后端，以后连接部连接针筒连接部的前端，弹性基部包括至少一弹性单元，所述弹性单元形成V形的弧曲体，并具有压缩与回复的弹性，弹性单元的弧曲体的弯弧型态对应于所述固定板体的半环体的弯曲型态。借此，使弹性保护件形状构造精简化，而能够易于模塑成型制造。
附图说明
以下附图仅旨在于对本发明做示意性说明和解释，并不限定本发明的范围。其中：
图1是本发明的注射器的一实施例的立体示意图。
图2是图1所示的注射器实施例的另一观视角度的立体示意图。
图3是图1及图2所示的注射器实施例的立体分解示意图。
图4是图1及图2所示的注射器实施例的另一观视角度的立体分解示意图(一)。
图5是图1及图2所示的注射器实施例的另一观视角度的立体分解示意图(二)。
图6是图1及图4所示的注射器实施例中的外套壳的侧视剖面立体示意图。
图7是图1至图5所示的注射器实施例组合后的侧视剖面立体示意图。
图8是图1至图5所示的注射器实施例与针筒组件组合前的侧视平面示意图。
图9是图1至图5所示的注射器实施例与针筒组件组成注射装置的立体外观示意图。
图10是图1至图5所示的注射器实施例与针筒组件组成注射装置的侧视剖面示意图。
图11是图1至图5所示的注射器实施例与针筒组件组成的注射装置于使用前的起始状态示意图。
图12是图1至图5所示的注射器实施例结合针筒组件组成的注射装置于拔除针盖及针筒组件的软塞后的参考图。
图13是图1至图5所示的注射器实施例结合针筒组件组成的注射装置于拔除针盖及针筒组件的软塞后的侧视剖面示意图。
图14是图1至图5所示的注射器实施例与针筒组件组成的注射装置进行人体注射的使用状态参考图(一)。
图15是图1至图5所示的注射器实施例与针筒组件组成的注射装置进行人体注射的使用状态参考图(二)。
图16是图1至图5所示的注射器实施例与针筒组件组成的注射装置进行人体注射的使用状态参考图(三)。
图17是图1至图5所示的注射器实施例与针筒组件组成的注射装置于注射后自人体上拔除后，护套本体弹出的使用状态参考图。
图18是图1至图5所示的注射器实施例与针筒组件组成的注射装置于注射后自人体上拔除后，弹出的护套本体被锁定的参考图。
附图标号说明：
1注射器
1A中心轴线
10外套壳
11壳体                       110通道
111连接段                    112卡接孔
113对位凹部                  12针筒结合部
121针筒卡勾                  13固定部
131固定凸片                  132固定卡槽
14操作部                     15观视窗
16长形导引孔                 17导轨
18限位凸缘                   19对位槽
20针盖
21外盖体                     210容置空间
22内盖体                     220组设空间
23弹勾部                     231勾爪
24前端板                     25抵靠凸片
26卡接弹片                   27对位插片
30弹性保护件
31护套本体                   311套体
312弹扣                      313衔接片体
314导槽                      315限位挡片
32针筒连接部                 320连接板体
321连接基部                  322固定板体
323缺口                      324导槽口
325卡制弹片                  326卡掣凸缘
33弹性体                     331弹性基部
3310弹性单元                 332前连接部
333后连接部
40针筒组件
41针筒                       42活塞推杆
43刺针                    44软塞
具体实施方式
以下配合附图及本发明的较佳实施例，进一步阐述本发明为达成预定发明目的所采取的技术手段。
本发明的注射器用于组接一具有药剂液的针筒组件，构成一注射装置。如图1至图5所示，其揭示本发明注射器的一实施例，该注射器1包括一外套壳10、一针盖20以及一弹性保护件30，且该注射器1界定有一中心轴线1A，该中心轴线1A是呈前后轴向延伸。
如图3至图6所示，该外套壳10包括一壳体11、一针筒结合部12以及一固定部13，该壳体11中形成沿着该中心轴线1A方向贯通的一通道110，该壳体11的外周面相对于该中心轴线1A的两侧分别形成一朝外凸伸的操作部14，以两该操作部14提供医护人员手指抵靠的部位，该壳体11的前段为一连接段111，该连接段111是用于连接该针盖20，该针筒结合部12与该固定部13是形成于该壳体11的后端，该针筒结合部12是用于连接该针筒组件，该固定部13则用于组接该弹性保护件30。
如图3至图6所示，前述外套壳10中，位于该壳体11前端的连接段111具有两卡接孔112，两该卡接孔112相对于该中心轴线1A呈径向相对排列，该针筒结合部12包括多个针筒卡勾121，多个该针筒卡勾121是分布形成于该壳体11的后端周缘且具备弯曲变形的弹性。该固定部13包括两固定凸片131，两该固定凸片131是自该壳体11的后端周缘朝后凸伸且径向相对排列，两该固定凸片131具备弯曲变形的弹性，所述固定凸片131中各设有一固定卡槽132，用于卡接该弹性保护件30。
如图3至图6所示，前述外套壳10中，该壳体11于其中段的一侧壁中形成一观视窗15，该观视窗15是自该壳体11的外表面径向连通至该通道110。该壳体11前端的连接段111的与该观视窗15相对的一侧的侧壁形成一长形导引孔16，该长形导引孔16平行于该中心轴线1A方向延伸且自该壳体11的外表面径向连通至该通道110。该壳体11的与该观视窗15相对的一侧的内侧壁上还可形成一导轨17，该导轨17自该壳体11的前段的内侧壁延伸至后端的内侧壁。该壳体11的前段的内侧壁中形成至少一限位凸缘18，用于限制该弹性保护件30的运动行程。
如图3至图6所示，该壳体11于该通道110的侧壁中形成两对位槽19，两该对位槽19位于该通道110相对两侧且相连通。该壳体11前端的连接段111的两该卡接孔112 分别对应连通该通道110。
如图3至图7所示，该针盖20是可拆组地连接于该外套壳10前端的连接段111。该针盖20包括一外盖体21、一内盖体22以及一弹勾部23，该外盖体21具有一容置空间210，该容置空间210延伸至该外盖体21的后端形成一外盖后端口。该内盖体22是成形于该外盖体21的容置空间210内，该内盖体22的外周面与该外盖体21的内周面之间具有一间距，该内盖体22中具有一组设空间220，该组设空间220于该内盖体22的后端形成一内盖后端口，该弹勾部23是形成于该内盖体22的后端且伸出该外盖体21的后端外侧。
如图3至图7所示，于本实施例中，该外盖体21的前端具有一前端板24，该内盖体22是自该前端板24的背面朝后延伸，该组设空间220沿着该中心轴线1A朝前延伸至该前端板24。
如图3至图7所示，该弹勾部23包括多个勾爪231，多个该勾爪231分布设置于该内盖体22的后端周缘且朝后凸伸。于本实施例中，该内盖体22的后端还形成一朝后凸伸的抵靠凸片25，该抵靠凸片25与该多个勾爪231相对于该中心轴线1A等角度分布排列地形成于该内盖体22的后端周缘。该外盖体21的后端还朝后凸伸两卡接弹片26，两该卡接弹片26是分别设置于该外盖体21相对于该中心轴线1A的两侧。
如图3至图5及图7所示，该针盖20是可拆组地装设于该外套壳10的前端，其中，该针盖20的抵靠凸片25与该弹勾部23伸入该外套壳10的通道110中，该针盖20的两该卡接弹片26分别对应伸入该外套壳10的两该对位槽19，并与该壳体11前端的卡接孔112卡接配合，使该针盖20组设于该外套壳10前端的连接段111，且该针盖20能与该外套壳10前端的连接段111拆离。
如图3至图5及图7所示，该针盖20中，该外盖体21的后端还可朝后凸伸多个对位插片27，多个该对位插片27分布于两该卡接弹片26的侧边，该外套壳10的壳体11的连接段111的前端面形成多个对位凹部113，多个该对位凹部113分别提供多个该对位插片27对应插设，用于辅助该针盖20与该外套壳10之间的结合。
如图3至图5及图7所示，该弹性保护件30是组设于该外套壳10中且连接该针盖20，该弹性保护件30包括一护套本体31、一针筒连接部32以及一弹性体33，该针筒连接部32是位于该护套本体31的后方，该弹性体33位于该护套本体31与该针筒连接部32之间且连接该护套本体31与该针筒连接部32，以针筒连接部32固定于外套壳10，护套本体31通过该外套壳10前端的连接段111且伸入该针盖20内，于该针盖20自该 外套壳10的前端拆离的状态下，通过该弹性体33对护套本体31提供的弹性，使该护套本体31能于该外套壳10的前端沿着该中心轴线1A方向(前后轴向)伸缩活动。
如图3至图7所示，于本实施例中，该护套本体31是包括一沿着该中心轴线1A(前后轴向)贯通的套体311，该套体311的一侧壁具有一弹扣312，该弹扣312伸入该外套壳10的长形导引孔16中，借以利用该长形导引孔16限制该护套本体31的直线运动的行程，该套体311的后端形成朝后凸伸的一衔接片体313，该衔接片体313连接该弹性体33，该衔接片体313的外侧面形成一导槽314，该套体311的该导槽314套设于该外套壳10的壳体11内侧壁的导轨17上，并能沿着该导轨17前后直线运动。
该套体311的后端还可形成至少一限位挡片315，所述限位挡片315具有弯曲变形与复位的弹性，所述限位挡片315能搭配于该外套壳10的壳体11的内侧壁中的限位凸缘18而产生锁定功能，于本实施例中，该套体311的后端形成两所述限位挡片315，两所述限位挡片315分别位于该套体311的前后轴向(即中心轴线)的相对两侧。于使用前的起始状态，所述限位挡片315位于限位凸缘18径向的内侧，当护套本体31通过弹性体33提供弹力而朝前弹出时，限位挡片315能移动至限位凸缘18的前侧，而产生阻止护套本体31朝后运动的锁定功能，该衔接片体313位于两所述限位挡片315之间的一侧，该弹扣312与衔接片体313位于该套体311的相同一侧。
如图3至图5及图7所示，于本实施例中，该针筒连接部32包括一连接基部321以及两连接板体320，两所述连接板体320分别设置于连接基部321的相对该中心轴线1A的两侧，两所述连接板体320的后端各具有自该连接基部321的后端朝后凸伸的一卡制弹片325，所述卡制弹片325具有一卡掣凸缘326，卡制弹片325具有弯曲变形与回复的弹性，所述卡制弹片325的卡掣凸缘326能分别与该外套壳10后端的所述固定凸片131的固定卡槽132对应卡接组合，使针筒连接部32固定于外套壳10的后端内。
如图3至图7所示，于本实施例中，该连接基部321具有沿着该中心轴线1A前后间隔排列的两固定板体322，每一所述固定板体322分别为具有一具有缺口323的半环体，两所述固定板体322的缺口323同朝该中心轴线1A的一侧。两所述固定板体322的与缺口323相对的一侧形成一导槽口324，该连接基部321的所述导槽口324套设于该外套壳10的壳体11的内侧壁的导轨17上，并能沿着该导轨17前后直线运动。
如图3至图5及图7所示，该弹性体33包括一弹性基部331、一前连接部332、一后连接部333，该弹性基部331包括至少一弹性单元3310，当弹性基部331具有多个弹性单元3310时，多个所述弹性单元3310是由前往后依序连接，该前连接部332与该后 连接部333分别成形于该弹性基部331的前端与后端，并以该前连接部332连接该护套本体31的衔接片体313的后端，以该后连接部333连接该针筒连接部32的前端。于本实施例中，所述弹性单元3310是形成一V形的弧曲体，并具有沿着该中心轴线1A前后压缩与回复的弹性，所述弹性单元3310的弧曲体的弯弧型态对应于所述固定板体322的半环体的弯曲型态。
如图8至图10所示，本发明的注射器1结合针筒组件40组成注射装置备用时，该针筒组件40是包括一装有药剂液的针筒41，该针筒41内装有一活塞推杆42，该针筒41前端设有一刺针43以及套设于该刺针43外侧的一软塞44，该针筒组件40是自该注射器1的后端由后往前地装设于该注射器1内，其中，该针筒组件40的软塞44伸入该针盖20的内盖体22的组设空间220中，针盖20的弹勾部23伸至该软塞44后方，针筒41位于弹性保护件30内，且该外套壳10后端的多个该针筒卡勾121分别勾接该针筒41的后端固定，活塞推杆42则伸出该外套壳10的后端外侧。如此，在注射前的操作过程中，通过针盖20、弹性保护件30与软塞44三者对刺针43提供多重的安全防护，用于避免刺针43插出的可能性。
如图11至图13所示，当医护人员欲使用该注射装置进行人体注射前，是先拔取外套壳10前端的针盖20，其中通过针盖20的弹勾部23勾接套设于刺针43外侧的软塞44，而使针盖20连同软塞44一起拉出，此时，弹性保护件30的护套本体31伸出外套壳10的前端外侧，且套设于针筒组件40的刺针43外侧，避免刺针43外露，确保注射前的使用安全性。而且弹性保护件30的护套本体31前方已无针盖20予以限制，且此起始状态下，弹性保护件30中位于护套本体31后端的限位挡片315是位于外套壳10的限位凸缘18的径向内侧，故护套本体31能于外套壳10前端自由伸缩活动。
如图13至图16所示，医护人员进行人体注射时，是以该注射器1前端的护套本体31伸向被注射预定注射部位，于此过程中，该护套本体31仍将刺针43罩盖于内，确保使用安全性。直至护套本体31的前端接触被注射者的皮肤，经按压针筒组件40后侧的活塞推杆42，使弹性保护件30受到挤压力量而压缩弹性体33，进而护套本体31退缩至外套壳10的壳体11内，使刺针43伸出护套本体31的前端外侧，并刺入被注射者体内，对被注射者注射药剂，并持续按压针筒组件40的活塞推杆42，将针筒41内的药剂液通过刺针43注射于被注射者体内。于注射过程中，医护人员可以经由外套壳10的观视窗15观视针筒41内的药剂推进量。
如图13及图17所示，待针筒41内的药剂液注入被注射者体内之后，后拉注射装 置，同时使针筒组件40前端的刺针43自被注射者的身体抽离，此时，该弹性保护件30的护套本体31通过弹性体33提供弹力，推抵护套本体31自外套壳10的前端弹出，使刺针43被罩盖于护套本体31内。
如图18所示，护套本体31通过弹性体33提供弹力自外套壳10的前端弹出后，护套本体31后端的限位挡片315随着护套本体31被弹出而朝前运动过程中，限位挡片315能通过外套壳10的壳体11的内侧壁的限位凸缘18而移至限位凸缘18的前方，通过限位凸缘18于限位挡片315后方的阻挡限位，产生阻止该护套本体31朝后运动的锁定功能，使护套本体31维持套设于刺针43外侧的状态，确保刺针43不外露的使用安全性。
经由以上说明可知，本发明的注射器结合针筒组件组成注射装置时，该针筒组件能够由后往前地装设于该注射器内，该针筒组件中套设于刺针外侧的软塞伸入该针盖内。在注射前，通过针盖、弹性保护件与软塞三者共同对刺针提供安全防护，确保其使用安全性。其次，本发明的注射器的针盖借其弹勾部伸至套设于刺针外侧的软塞后方，当医护人员欲进行人体注射前，将位于外套壳前端的针盖拔取的同时，利用针盖后端的弹勾部勾接套设于刺针外侧的软塞的构造，使针盖能连同软塞一起自外套壳前端拉出，使装设于注射器内的针筒组件中，原套设于刺针外侧的软塞能够轻易地被拔取，且能避免误触弹性保护件的护套本体，该注射器的弹性保护件的护套本体维持罩盖于针筒组件的刺针外侧，避免刺针外露。故能有效解决现有注射器结合针筒组件后，位于针筒组件前端的针盖难以自注射器的保护盖中取出，以及医护人员误触保护盖的风险偏高等问题。
再者，本发明的注射器还能进一步利用外套壳的壳体内侧壁形成限位凸缘，该弹性保护件的护套本体的后端具有限位挡片的构造，待完成注射作业后，后拉注射装置，针筒组件前端的刺针自被注射者的身体抽离时，该弹性保护件的护套本体通过弹性体提供弹力，推抵护套本体自外套壳的前端弹出，使刺针被罩盖于护套本体内，且护套本体后端的限位挡片随着护套本体被弹出而朝前运动过程中，限位挡片能通过外套壳的壳体的内侧壁的限位凸缘而移至限位凸缘的前方，通过限位凸缘于限位挡片后方的阻挡限位，产生阻止该护套本体朝后运动的锁定功能，使护套本体维持套设于刺针外侧的状态，确保刺针不外露的使用安全性。
以上所述仅是本发明的较佳实施例而已，并非对本发明做任何形式上的限制，虽然本发明已以较佳实施例揭露如上，然而并非用以限定本发明，任何熟悉本专业的技术人员，在不脱离本发明技术方案的范围内，当可利用上述揭示的技术内容作出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本发明技术方案的内容，依据本发明的技 术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本发明技术方案的范围内。

Claims (10)

  1. 一种注射器，其用于提供一针筒组件组设其中而构成一注射装置，该针筒组件于其前端的一刺针的外侧套设有一软塞，该注射器界定有前后轴向延伸的一中心轴线，其特征在于，该注射器包括：
    一外套壳，其包括一壳体、一针筒结合部以及一固定部，该壳体中形成沿着该中心轴线方向贯通的一通道，该壳体的外周面相对于该中心轴线的两侧分别形成一朝外凸伸的操作部，该壳体的前端具有一连接段，该针筒结合部与该固定部是形成于该壳体的后端，该针筒结合部用于连接该针筒组件；
    一针盖，其能拆组地连接于该外套壳前端的连接段，该针盖包括一外盖体、一内盖体以及一弹勾部，该内盖体是成形于该外盖体内，该内盖体的外周面与该外盖体的内周面之间具有一间距，该内盖体的后端形成一内盖后端口，该盖后端口用于提供该针筒组件的软塞伸入其中，该弹勾部是形成于该内盖体的后端且伸出该外盖体的后端外侧，该弹勾部用于连接该针筒组件的软塞，使该针盖能连同该软塞一同自该外套壳的前端拔除；以及
    一弹性保护件，其组设于该外套壳中且连接该针盖，该弹性保护件包括一护套本体、一针筒连接部以及一弹性体，该针筒连接部是位于该护套本体的后方，该针筒连接部包括一连接基部，该弹性***于该护套本体与该针筒连接部的连接基部之间，该针筒连接部固定于该外套壳中且连接该针筒结合部，该护套本体通过该外套壳前端的连接段并伸入该针盖内，于该针盖自该外套壳的前端拆离的状态下，通过该弹性体对该护套本体提供弹性，使该护套本体能于该外套壳的前端沿着该中心轴线方向伸缩活动。
  2. 根据权利要求1所述的注射器，其特征在于，该外套壳的壳体的前段的内侧壁中形成两限位凸缘，两所述限位凸缘分别位于该中心轴线的相对两侧；
    该护套本体包括沿着该中心轴线贯通的一套体，该套体的后端形成两限位挡片，两所述限位挡片分别对应于两所述限位凸缘，两所述限位挡片能随该护套本体于该外套壳中运动，于该护套本体被弹出的状态下，所述限位挡片能移动至相对应的所述限位凸缘的前方位置。
  3. 根据权利要求1所述的注射器，其特征在于，该弹性保护件的连接基部包含沿着该中心轴线前后间隔排列的两固定板体，每一所述固定板体具有一具有缺口的半环体，两所述固定板体的缺口同朝该中心轴线的一侧；
    该弹性体包括一弹性基部、一前连接部以及一后连接部，该弹性基部包括至少一弹 性单元，该前连接部与该后连接部分别成形于该弹性基部的前端与后端，该前连接部连接该护套本体的后端，该后连接部连接该针筒连接部的前端；所述弹性单元是形成一V形的弧曲体，并具有沿着该中心轴线前后压缩与回复的弹性，所述弹性单元的弧曲体的弯弧型态对应于所述固定板体的半环体的弯曲型态。
  4. 根据权利要求2所述的注射器，其特征在于，该弹性保护件的连接基部包含沿着该中心轴线前后间隔排列的两固定板体，每一所述固定板体具有一具有缺口的半环体，两所述固定板体的缺口同朝该中心轴线的一侧；
    该弹性体包括一弹性基部、一前连接部以及一后连接部，该弹性基部包括至少一弹性单元，该前连接部与该后连接部分别成形于该弹性基部的前端与后端，该前连接部连接该护套本体的后端，该后连接部连接该针筒连接部的前端；所述弹性单元是形成一V形的弧曲体，并具有沿着该中心轴线前后压缩与回复的弹性，所述弹性单元的弧曲体的弯弧型态对应于所述固定板体的半环体的弯曲型态。
  5. 根据权利要求4所述的注射器，其特征在于，该弹性保护件的弹性体的弹性基部具有多个所述弹性单元，多个所述弹性单元是由前往后依序连接。
  6. 根据权利要求1至5中任一项所述的注射器，其特征在于，该壳体前端的连接段中具有两卡接孔，两该卡接孔相对于该中心轴线呈径向相对排列，该针筒结合部包括多个针筒卡勾，多个该针筒卡勾是分布形成于该壳体的后端周缘且具备弯曲变形的弹性，多个该针筒卡勾用以连接该针筒组件；
    该固定部包括两弯曲变形弹性的固定凸片，两该固定凸片是自该壳体的后端周缘朝后凸伸且径向相对排列，所述固定凸片设有一固定卡槽；
    该弹性保护件的针筒连接部包括两连接板体，两所述连接板体分别设置于该连接基部的相对该中心轴线的两侧，两所述连接板体的后端各具有自该连接基部的后端朝后凸伸的一卡制弹片，所述卡制弹片具有一卡掣凸缘，所述卡制弹片具有弯曲变形与回复的弹性，各所述卡制弹片的卡掣凸缘能分别与该外套壳后端的各所述固定凸片的固定卡槽对应卡接组合，使该针筒连接部固定于该外套壳的后端内。
  7. 根据权利要求1至5中任一项所述的注射器，其特征在于，该外套壳的连接段的侧壁形成一长形导引孔，该长形导引孔平行于该中心轴线方向延伸且自该壳体的外表面径向连通至该通道，该壳体的内侧壁形成一导轨，该导轨自该壳体前段的内侧壁延伸至后端的内侧壁；
    该护套本体包括沿着该中心轴线贯通的一套体，该套体的一侧壁具有一弹扣，该弹 扣伸入该长形导引孔中，该套体的后端形成朝后凸伸的一衔接片体，该衔接片体连接该弹性体，该衔接片体的外侧面形成一导槽，该导槽套设于该外套壳的壳体的内侧壁的导轨上；
    该弹性保护件的针筒连接部的侧边形成一导槽口，所述导槽口套设于该外套壳的壳体内侧壁的导轨上。
  8. 根据权利要求1至5中任一项所述的注射器，其特征在于，该外套壳的壳体的中段的一侧壁中形成一观视窗，该观视窗自该壳体的外表面径向连通至该通道。
  9. 根据权利要求1至5中任一项所述的注射器，其特征在于，该壳体于该通道的侧壁中形成两对位槽，两该对位槽位于该通道的相对两侧且相连通，该壳体前端的连接段中具有两卡接孔，两该卡接孔分别对应连通两该对位槽；
    该针盖的弹勾部包括多个勾爪，多个该勾爪分布设置于该内盖体的后端周缘且朝后凸伸；
    该内盖体的后端形成一朝后凸伸的抵靠凸片，该抵靠凸片与多个该勾爪相对于该中心轴线呈等角度分布排列地形成于该内盖体的后端周缘；
    该外盖体的后端朝后凸伸两卡接弹片，两该卡接弹片分别设置于该外盖体相对于该中心轴线的两侧；
    该针盖的抵靠凸片与该弹勾部伸入该外套壳的通道中，该针盖的两该卡接弹片分别对应伸入该外套壳的两该对位槽，并与该壳体前端的卡接孔卡接配合，使该针盖组设于该外套壳前端的连接段，且该针盖能与该外套壳前端的连接段拆离。
  10. 根据权利要求9所述的注射器，其特征在于，该外盖体的前端具有一前端板，该内盖体自该前端板的背面朝后延伸，该内盖体中具有一组设空间，该组设空间沿着该中心轴线朝前延伸至该前端板中；该针盖的外盖体的后端朝后凸伸多个对位插片，该外套壳的壳体的连接段的前端面形成多个对位凹部，多个该对位凹部分别提供多个该对位插片对应插设。
PCT/CN2018/094831 2018-07-06 2018-07-06 注射器 WO2020006751A1 (zh)

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USD999906S1 (en) 2021-06-24 2023-09-26 UCB Biopharma SRL Gripper for auto-injector needle shield
WO2023217041A1 (zh) * 2022-05-07 2023-11-16 上海新耀湃科医疗科技股份有限公司 针头防护式预灌封注射器，组件，组件的安装方法，组件的使用方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD999906S1 (en) 2021-06-24 2023-09-26 UCB Biopharma SRL Gripper for auto-injector needle shield
WO2023217041A1 (zh) * 2022-05-07 2023-11-16 上海新耀湃科医疗科技股份有限公司 针头防护式预灌封注射器，组件，组件的安装方法，组件的使用方法

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