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WO2008037138A1 - Injecteur médical sécurisé et ensemble de piston pour la réalisation d'une injection médicale sécurisée - Google Patents

Injecteur médical sécurisé et ensemble de piston pour la réalisation d'une injection médicale sécurisée Download PDF

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Publication number
WO2008037138A1
WO2008037138A1 PCT/CN2006/003708 CN2006003708W WO2008037138A1 WO 2008037138 A1 WO2008037138 A1 WO 2008037138A1 CN 2006003708 W CN2006003708 W CN 2006003708W WO 2008037138 A1 WO2008037138 A1 WO 2008037138A1
Authority
WO
WIPO (PCT)
Prior art keywords
rod
medical drug
injection device
hollow
retracting
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2006/003708
Other languages
English (en)
French (fr)
Inventor
Lee Lin Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BENCHA INTERNATIONAL GROUP Inc
Original Assignee
BENCHA INTERNATIONAL GROUP Inc
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 BENCHA INTERNATIONAL GROUP Inc filed Critical BENCHA INTERNATIONAL GROUP Inc
Priority to EP06840738.6A priority Critical patent/EP2085104B1/en
Priority to BRPI0621930-6A priority patent/BRPI0621930A2/pt
Priority to ES06840738.6T priority patent/ES2540930T3/es
Priority to MX2009003294A priority patent/MX2009003294A/es
Priority to AU2006348935A priority patent/AU2006348935B2/en
Priority to CA2664361A priority patent/CA2664361C/en
Priority to PL06840738T priority patent/PL2085104T3/pl
Priority to DK06840738.6T priority patent/DK2085104T3/en
Priority to JP2009529492A priority patent/JP2010504772A/ja
Publication of WO2008037138A1 publication Critical patent/WO2008037138A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • 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
    • A61M5/3234—Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user
    • 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
    • A61M5/31501—Means for blocking or restricting the movement of the rod or piston
    • A61M5/31505—Integral with the syringe barrel, i.e. connected to the barrel so as to make up a single complete piece or unit
    • A61M2005/31506—Integral with the syringe barrel, i.e. connected to the barrel so as to make up a single complete piece or unit formed as a single piece, e.g. moulded

Definitions

  • the present invention generally relates to a safety injection device, and more particularly to an automatic retraction type that can be operated with one hand and can automatically retract with a needle. Automatically Retractable Medically Safety Injector and its Plunger Combination. BACKGROUND OF THE INVENTION
  • the drug addicts are prevented from being repeatedly used and the medical staff is prevented from being accidentally injured by the needle during the injection.
  • the syringe comprises a hollow cartridge 12' (Barrel), a needle hub 1' (Needle Hub) for engaging the needle 10', a circular retracting spring 13', and a crushable retractable push rod.
  • 14' (Breakable Retracting Plunger) 0 wherein the crushable retractable push rod 14' includes a one-pierce front pusher 17', a breakable 18' (Breakable Connection), and a hollow rear push Rod 19'.
  • the user When the crushable retractable push rod 14' is assembled into the hollow cartridge 12' to complete the injection of the liquid medicine, the user continues to apply the needle to the needle.
  • the force can cause the fracture portion 18' to rupture, causing the front push rod 17' to retract into the hollow portion of the hollow rear push rod 19' to make room for the needle holder 1 to drive the needle 10, and to be accommodated together to the hollow cartridge Within 12'.
  • the above-mentioned crushable internal pusher considers the force application and the operability of the person, and the symmetry and the precision of the broken portion of the push rod are required to be high, resulting in the dimensional error of the mold used for the integral injection molding in the process of manufacturing the push rod.
  • the allowable range is small, and it is difficult to prevent the push rod from being broken during assembly and handling, so that the yield and the yield are difficult to increase, and the mold cost cannot be lowered.
  • a primary object of the present invention is to provide a medical drug safety injection device and a pusher assembly thereof which are easy to handle with one hand and which are less likely to cause a syringe to be damaged during injection due to a person's operating angle or posture.
  • Another object of the present invention is to provide a medical drug safety injection device and a pusher combination thereof which are not easy to damage the syringe during assembly, improve product quality and yield, increase product reliability, reduce waste of raw materials and process cost. Pieces.
  • a further object of the present invention is to provide a medical drug safety injection device which facilitates plastic injection molding and can reduce the precision requirements of the mold, and allows the tolerance of the product quality to fall within a reasonable range, thereby reducing the manufacturing cost.
  • Rod assembly
  • Another object of the present invention is to provide a medical drug safety injection device and a push rod assembly thereof with a force applying cushioning and a lateral shear resistance function, improving the convenience of an operation during injection, reducing the injection failure rate and patient suffering. .
  • the present invention discloses an automatic retractable medical drug safety injection device for injecting liquid medical drugs into muscle, subcutaneous and intravenous or blood draw, and for single use only (Automatically Retractable). Medically Safety Injector), and the Plunger combination included in the device.
  • the medical drug safety injection device comprises at least: a needle hub connecting the needle, a Hollow Barrel, the cartridge can hold the needle holder, and guide the needle holder to be retracted in the opposite direction of the injection, and the placement a push rod assembly in the hollow cartridge, the push rod assembly comprising a retractable Plunger and a hollow rod (Hollow Shank) sleeved with the inner shrink rod, the inner shrink rod is at the sleeve portion Forming at least one protrusion on the outer side wall to correspond to at least one recess formed on the inner side wall of the hollow rod, when the medical drug injection device is injected and the user continues to apply force to the push rod assembly At the time, the retracting rod retracts into the hollow rod to free up the space of the cartridge to accommodate the needle holder.
  • the front and rear relationship of the hollow rod and the inner retracting rod allows arbitrary replacement on the push rod assembly.
  • the present invention also discloses that the inner retracting rod has one or more lateral stress adjusting openings at the core of the sleeve portion of the hollow rod, or At least one stress adjustment opening is additionally formed on the bevel edge of the hollow rod, wherein the stress adjustment port formed on the bevel edge of the hollow rod has a depth position that has not yet reached the concave portion inside the hollow rod.
  • the medical drug safety injection device of the present invention provides further reinforcement on the inner and outer rods of the pusher assembly. design.
  • the medical drug safety injection device of the present invention and the push rod assembly thereof are provided with one or more exhaust openings on the side wall of the hollow rod remote from the needle for passing through the hollow rod
  • the exhaust opening is opened to allow the inner retracting rod to retract to the hollow rod, and the proper exhaust function is adopted to prevent the air resistance from affecting the feel of the thumb and facilitating the operation of the person.
  • the inner rod of the push rod assembly is close to the rear end of the cartridge, the inner rod can be added to the side wall of the needle remotely.
  • One or more exhaust vents to create a preferred venting function through the venting opening.
  • the third and fourth embodiments are disposed at the convex portion on the outer side of the inner retracting rod, and the at least one lateral outer convex ring rib or one or more rows of adjacent or spaced lateral outer convex points are substituted for the convex portion; Correspondingly, at least one concave ring rib or one or more rows of adjacent or spaced annular grooves are formed at the recessed portion inside the hollow rod to replace the recess.
  • a plurality of portions are formed on the side wall of the hollow rod near the bottom edge of the inner retracting rod a stopper (or a sixth embodiment) formed above the convex portion of the inner contracting rod to offset or buffer the excessive force applied by the user when pressing the push rod to prevent the injection has not been completed.
  • the retraction rod is retracted into the hollow rod in advance and the injection fails.
  • the medical drug safety injection device and the pusher assembly of the present invention have a better design on the needle holder for improving manufacturing yield and human operability.
  • the medical drug safety injection device is configured to increase the back condensation rate of the needle seat, and integrally form a narrow tube portion having a smaller diameter than the drug cartridge in the front portion of the drug cartridge, thereby accommodating the compressed state spring and the portion.
  • a needle holder wherein the opening of the narrow barrel portion of the cartridge is provided with at least one hollow blocking member (movable retaining ring), and the inner diameter of the hollow portion of the blocking member is smaller than a partial needle seat to prevent the needle seat from being injected When the force is excessive, the needle is retracted.
  • the eighth embodiment of the present invention also discloses an injection molding technology.
  • a bottleneck is formed in the narrow cylindrical portion to allow only the needle and a part of the needle to pass through.
  • the needle seat can be blocked and the distance of the needle seat can be controlled to maintain the optimal retracted position.
  • the medical drug automatic retractable safety injection device and the push rod assembly thereof are separated by a separate design, and the elastic material such as plastic or rubber is shrunk.
  • the stalk and the hollow rod are respectively injection molded, and then assembled after completion, so that the accidental collision of the push rod during assembly can be reduced, and the injection error caused by the damage of the push rod before and during the unpacking is reduced, and
  • the pusher of the pusher is separately assembled and assembled again.
  • the precision requirement of the pusher for the forming die may not be as loose as the force balance of the joint part in the integral forming type of the pusher, so the development cost of the die is small, and the product is improved. Reliability and quality stability.
  • the two-piece pusher assembly has a force balance characteristic superior to that of the existing syringe fracture portion in the lateral shear resistance, so that the patient himself or herself injects a difficult-to-force portion with one-handed injection or medical personnel. Also, it does not affect the operation due to the injection angle or posture limitation.
  • FIGS. 1A and 1B are schematic cross-sectional views of an automatic retracting safety syringe having a broken portion push rod;
  • FIG. 2 is a perspective exploded view of a medical drug safety injection device and a push rod assembly thereof according to a first embodiment of the present invention
  • FIG. 3 is a cross-sectional view and a partial enlarged view of a push rod assembly in a medical drug safety injection device according to a first embodiment of the present invention
  • FIG. 4 is a schematic view showing the operation of the shrink rod and the hollow rod in the push rod assembly in the medical drug safety injection device according to the first embodiment of the present invention
  • Figure 5 is a perspective view of a hollow rod in a medical drug safety injection device according to a first embodiment of the present invention
  • FIG. 6A and FIG. 6B are schematic cross-sectional views showing a medical drug safety injection device according to another embodiment of the first embodiment of the present invention.
  • Figure 7 is a schematic exploded perspective view of a hollow rod in a medical drug safety injection device according to a second embodiment of the present invention.
  • Figure 8 is a cross-sectional perspective view of a push rod assembly in a medical drug safety injection device according to a third embodiment of the present invention.
  • Figure 9 is a cross-sectional view showing a push rod assembly in a medical drug safety injection device according to a fourth embodiment of the present invention.
  • Figure 10 is a cross-sectional view showing a pusher assembly in a medical drug safety injection device according to a fifth embodiment of the present invention.
  • Figure 11 is a diagram showing the retraction of the retracting rod in the medical drug safety injection device according to the fifth embodiment of the present invention. Schematic diagram of the action of the empty rod;
  • Figure 12 is a perspective view showing a rod of a rough portion in a medical drug safety injection device according to a sixth embodiment of the present invention.
  • FIG. 13 is an exploded perspective view of a medical drug safety injection device according to a seventh embodiment of the present invention.
  • FIG. 14 is an exploded perspective view of the medical drug safety injection device according to the eighth embodiment of the present invention.
  • the Automatic Retractable Medically Safety Injector (A) of the first embodiment of the present invention includes at least: a needle hub (Needle Hub) 11 for connecting the needle 10, and a hollow cartridge 12 ( Hollow Barrel) and a pusher assembly 14 disposed within the hollow cartridge 12, the hollow cartridge 12 can hold the hub 11 and guide the injected needle hub 11 in the opposite direction of the injection by at least one annular retraction spring 13 Retracted.
  • a needle hub Needle Hub
  • Hollow Barrel Hollow Barrel
  • a pusher assembly 14 disposed within the hollow cartridge 12
  • the hollow cartridge 12 can hold the hub 11 and guide the injected needle hub 11 in the opposite direction of the injection by at least one annular retraction spring 13 Retracted.
  • one end of the needle hub 11 accommodates the needle 10 and penetrates the center portion of the needle hub 11, and the other end of the needle hub 11 is provided with a disc stop 110 for providing an annular retracting spring 13 in a compressed state for abutment.
  • a plurality of concave positioning grooves 111 and U-shaped retracting working slides 112 connecting the positioning grooves 111 are provided at appropriate positions between the two ends of the needle holder 11, and the concave positioning grooves 111 are used for the front end of the hollow medicine cartridge 12.
  • the 120 forms a buckle.
  • the annular retracting spring 13 is released from the compressed state, the needle seat 11 that is disengaged from the buckle is retracted in the opposite direction of the injection direction along the U-shaped retracting working slide 112, and the needle holder 11 is retracted.
  • the distance can be controlled by the U-shaped retracting work slide 112 to prevent the needle 10 from being exposed.
  • the annular retracting spring 13 here, in addition to the annular retracting spring, any other component (such as a folded metal dome) sufficient to generate elastic restoring force such as compression and release is the equivalent of the annular retracting spring 13. Replacement scope.
  • the hollow cartridge 12 has a front end 120 and a rear end 121. As shown in FIG. 2, the front end 120 of the hollow cartridge 12 is provided with a plurality of elastic hooks 122 facing the center. During the injection process, the hook 122 is stably buckled in the concave positioning groove 111 of the needle seat 11, After the injection is completed, the user applies a force to the needle direction, and when the hooks 122 are elastically expanded indirectly, the needle holder 11 is retracted to the hollow cartridge 12 due to the release of the buckle between the hooks 122 at the front end of the cartridge. Inside. Referring to FIG. 3, the main feature of the automatic retractable medical drug safety injection device 1 of the first embodiment of the present invention is the design of the pusher assembly 14.
  • the pusher assembly 14 is assembled from a two-stage structure and separately formed by a retractable Plunger 15 and a hollow rod 16 (Hollow S anl), wherein the bottom of the inner retracting rod 15
  • the hollow rod 16 is sleeved, and as shown in a partially enlarged view (ie, the socket portion A), a plurality of convex portions 150 are formed on the outer side wall of the inner shrinking rod 15, and the inner side wall of the hollow rod 16 is Forming a plurality of recesses 160 corresponding to the raised portion 150, in a general state when the pusher assembly 14 is not in use or during the injection, the raised portion 150 of the inner shrinking rod 15 and the hollow rod
  • the recessed portion 160 of the 16 forms a tight caliper, and only when the injection is completed, and the user presses the force to force the raised portions 150 out of the recessed portion 160, the retracting rod 15 retreats into the hollow rod 16, and the retracting rod 15 is retracted.
  • the inner shrinking rod 15 or the hollow rod 16 shown in FIG. 3 is made of a slightly elastic material such as polyethylene (polyethylene, PE) plastic, polyvinyl chloride or rubber, or polypropylene (PP), or AN.
  • PE polyethylene
  • PP polypropylene
  • a series of transparent hard plastics are produced by injection molding. The rigidity of the transparent rigid plastic and the elastic material provides a proper injecting force for the inner rod 15 and the hollow rod 16.
  • the trunk portion of the inner rod 15 can be made.
  • the cross rib is either a column or a column.
  • the first embodiment of the present invention proposes another modification in which one or more lateral stress adjustment ports are opened at the core of the sleeve portion A of the hollow rod 16 151, the stress adjustment port 151 is, for example, a recess, a blind hole or a through hole, and the depth position of the lateral stress adjustment ports 151 generally approaches or does not reach the outer wall protrusion 150 of the inner shrink rod 15 Form the location.
  • the lateral stress adjustment port 151 is allowed to deform and the caliper of the boss 150 and the recess 160 is released.
  • the convex portion 150 in this embodiment may be a bump formed by the formation of the inner shrink rod 15 at the time of injection molding, and the shape, the size, the number, and the arrangement of the bumps are not significantly limited, but the embodiment is Six symmetrical bumps are exemplified as preferred embodiments, and for example, the outer rib ribs are also included in the equivalent range of the bosses 150 described in this embodiment.
  • the hollow rod 16 is formed with a plurality of calipers that can be aligned with the convex portion 150 in the vicinity of the inner side wall of the rod and the inner retracting rod 15
  • the recessed portion 160 may be grooves, recesses, or partial or complete inner annular ribs, and the recesses 160 may be C-shaped, angular, or irregular in cross section. Any configuration in which the boss portion 150 corresponding to the inner retracting rod 15 is tightly caliper is included in the equivalent range of the recess portion 160 of the embodiment.
  • the concave rib of the complete inner ring is used as the preferred embodiment of the recessed portion 160 to prevent the inner diameter of the inner diameter of the convex portion 150 from being assembled due to the geometrical position of the convex portion 150.
  • the inner rod 15 is rounded at the bottom edge 152 of the rod below the boss portion 150.
  • the edge portion 162 of the inner side of the opening of the hollow rod 16 forms an arcuate surface, a rounded surface or a sloped surface, so that the inner diameter of the opening edge portion 162 of the hollow rod 16 can be equal to or slightly larger than the diameter of the bottom edge of the rod of the inner retracting rod 15, such that When the caliper is released, the retracting rod 15 can slide into the hollow rod 16 and smoothly complete the retracting action. Since the retracting force and the tensile strength between the retracting rod 15 and the hollow rod 16 are in accordance with the mechanical test standard when the push rod assembly 14 is actually mass-produced, as shown in FIG. 5, in the first embodiment of the present invention, Another variation is also disclosed.
  • the beveled edge portion 162 of the hollow rod 16 is additionally provided with at least one stress adjustment opening 163.
  • the depth position of the stress adjustment opening 163 has not yet reached the position of the inner recess portion 160 of the hollow rod 16, and
  • the stress adjustment port 163 can also be, for example, a pocket or a blind hole.
  • the relationship between the hollow rod 16 and the inner retracting rod 15 can be arbitrarily replaced on the push rod assembly 14, and there is no significant limitation in the relative position. Except as shown in FIG.
  • the retracting rod 15 is disposed near the needle seat 11, so that the retracting direction of the retracting rod 15 after the completion of the injection and the retracting direction of the needle seat after being detached tend to
  • the inner retracting rod is placed away from the needle holder at the rear of the cartridge.
  • the pusher assembly 14 of this embodiment is also assembled by a two-stage design of a retractable Plunger and a hollow rod 16 (Hollow Shanl).
  • a plurality of protrusions 150 are formed on the inner side wall of the hollow rod 16, and a plurality of recesses 160 corresponding to the protrusions 150 are formed on the inner side wall of the hollow rod 16, so that the push rod assembly 14 is in an unused state or in a general state.
  • the raised portion 150 of the inner retracting rod 15 forms a tight caliper with the recessed portion 160 of the hollow rod 16.
  • the hollow rod 16 and the retracting rod 15 are mutually interchanged.
  • the user continues to apply pressure to force the protrusions 150 on the top inner side wall of the retracting rod 15 to disengage from the recess 160.
  • the inner retracting rod 15 is retracted into the hollow rod 16, and as shown in FIG.
  • the retracting direction of the retracting rod 15 retracting into the hollow rod 16 is opposite to the retracting direction of the needle holder 11 after the buckle is released.
  • the preferred embodiment of the present embodiment can also be in the end and inside of the hollow cartridge 12.
  • extension wings 159 are respectively added to control the retraction distance of the inner retracting rod 15 to reserve enough cartridge space to accommodate the needle holder 11.
  • the various embodiments described herein are preferred embodiments of the scope of implementation of the first embodiment of the present invention, and are not limited thereto, and are generally pushed by a hollow rod and a retracting rod.
  • the rod assembly regardless of the sleeve sequence, the snap pattern or the segment joint of the hollow rod and the inner rod, is included in the equivalent range of the present invention which is easy to think and can be reasonably expanded.
  • the medical drug safety injection device of the present invention further strengthens the inside of the push rod assembly and the hollow rod. design.
  • Figures 7 through 14 illustrate various embodiments of the medical drug safe injection device and pusher assembly of the present invention.
  • Fig. 7 shows a medical drug safety injection device and a pusher assembly thereof according to a second embodiment of the present invention.
  • the hollow rod 26 of the pusher assembly of the present embodiment is provided with one or more exhaust openings 264 on the side wall remote from the socket portion (shown as A in FIG. 3).
  • the exhaust opening 264 allows the inner shrink rod 25 to be retracted to the hollow rod 26 without being affected by air resistance It affects the feel of the thumb, which in turn facilitates human operation.
  • the recessed portion 160 of the first embodiment is replaced by a concave ring rib 260, and the edge portion 262 and the stress adjusting opening 263 are identical to the edge portion 162 and the stress adjusting opening 163 of the first embodiment, respectively. Referring to FIG.
  • the outer side of the inner retracting rod 35 is replaced by a lateral or contour change continuous or discontinuous outer convex rib 350.
  • the groove 360 is substituted for the recess 160 of the first embodiment.
  • the outer convex ring rib 350 and the inner concave ring rib 360 can also adopt the multi-row structure shown in the medical drug safety injection device of the fourth embodiment of the present invention and the push rod assembly thereof.
  • the push rod assembly is arranged outside the inner shrink rod 45, and the upper and lower rows are arranged adjacent to each other or spaced apart and the lateral contour changes to a continuous or discontinuous outer convex ring.
  • the ribs 450 are substituted for the raised portions 150 of the first embodiment; and, correspondingly, at the corresponding positions inside the hollow rods 46, the upper and lower rows of the inner concave ring ribs 460 are arranged adjacent to each other or spaced apart and the contour changes to be continuous or discontinuous.
  • the recessed portion 160 of the first embodiment may be replaced by an annular groove 460 whose contour is changed to be continuous or discontinuous.
  • the present invention is also disclosed under the recessed portion or the concave ring rib or the annular groove of the hollow rod. Further improvement. As shown in FIG. 10, the medical drug safety injection device and the push rod assembly of the fifth embodiment of the present invention are retracted in the direction of the retracting rod 55 at the socket portion A of the push rod assembly, on the inner side of the hollow rod 56.
  • a plurality of blocking members 564 are formed in the vicinity of the lower edge of the recessed portion or the concave ring rib or the annular groove 560, and the reaction force during the injection of the contracting rod 55 is enhanced by these blocking members 564 to allow the contraction
  • the combination of the rod 55 and the hollow rod 56 is more robust.
  • the blocking member 564 may be a protrusion formed by the hollow rod 56 when integrally formed during molding, or an additional block (Blocks), and the extending surface of the blocking member 564 maintains a right angle with the longitudinal axis of the hollow rod 56, or A slip angle inclination is formed which coincides with the retracting direction of the retracting rod 55.
  • the blocking member 564 is designed to have a downward bevel angle that coincides with the retraction direction of the retracting rod 55. Therefore, as shown in Figure 11, when the drug solution is completed Thereafter, the user applies a force to the pusher assembly, so that the convex portion 550 of the inner contraction rod 55 can be laterally retracted toward the stress adjustment opening 551 to be synchronously retracted into the hollow rod 56. At this time, the blocking member 564 is inclined downward. The slip angle will guide the inner retracting rod 55 to slide in.
  • FIG. 12 is a view showing a medical drug safety injection device and a pusher assembly thereof according to a sixth embodiment of the present invention. As shown in the figure, in the present embodiment, the convex portion 650 on the outer wall surface of the inner contraction rod 65 is formed with a roughness thereon.
  • the portion 655 is formed by a surface of a staggered groove, a horizontal groove or a non-smooth particle, and the rough portion 655 cancels or buffers an excessive force applied when the user presses the push rod, thereby preventing the inner shrink rod 65 that has not been injected from being retracted into the hollow.
  • Rod (not shown) causes the injection to fail.
  • the medical drug automatic retracting safety injection device and the push rod assembly of the invention adopts a two-stage separated design, and the inner and outer rods of the elastic material such as plastic or rubber are separately injection molded, and then assembled, and then assembled.
  • the two-piece pusher assembly has a force balance characteristic superior to that of the existing syringe fracture portion in the lateral shear resistance, so that the patient himself or herself injects a difficult-to-force portion with one-handed injection or medical personnel. , also does not affect the operability due to injection angle or posture restrictions.
  • the medical drug safety injection device and the pusher assembly of the present invention are also optimally designed on the needle hub. 13 and 14 are explained in detail in conjunction with the seventh embodiment and the eighth embodiment, respectively. As shown in FIG. 13 , the medical drug safety injection device and the push rod assembly 74 of the seventh embodiment of the present invention are formed to have a smaller diameter than the hollow cartridge 72 in the front portion of the hollow cartridge 72 in order to improve the yield of the needle retraction.
  • the narrow cylindrical portion 72a accommodates the annular retracting spring 73 in a compressed state and the front half of the needle holder 71, wherein the opening 72b of the hollow cartridge 72 connecting the narrow cylindrical portion 72a accommodates at least one movable or fixed retaining ring 75 , to prevent the needle holder 71 from coming off when the force is applied by injection, And the needle holder 71 for guiding the injection is retracted, and the through hole 75a is provided at the center of the movable or fixed retaining ring 75 for the needle 70 and the partial needle holder 71 to pass through, and the area of the through hole 75a of the ring 75 is smaller than The area of the disc stop 710 of the hub 71 blocks the disc stop 710 of the hub 71 to control the hub 71 in the optimal preset retracted position.
  • the movable or fixed retaining ring may be any one or more ring bodies whose inner wall is smooth or form a regular or irregular spine.
  • a ring forming a radial spine portion through a through hole is a preferred embodiment.
  • the needle 70, the needle holder 71, the concave positioning groove 711, the U-shaped retracting working slide 712 and the annular retracting spring 73 of the present embodiment are respectively different from the needle 10, the needle seat 11, and the concave body described in the first embodiment.
  • the positioning groove 111, the U-shaped retracting working slide 112, and the annular retracting spring 13 are the same.
  • the eighth embodiment of the present invention also discloses that when the hollow cartridge 82 is injection molded, it is hollow.
  • An open-ended neck portion 85 is formed directly at the opening of the narrow cylindrical portion 82a of the cartridge 82 and the hollow cartridge 82.
  • the neck portion 85 is provided with a through hole at the center, and the through-hole area is smaller than the area of the disc stop 810. Therefore, the neck portion 85 can block the document disc 810 and only allow the needle 80 and the front half of the hub 81 to pass through, which is also sufficient to achieve the function of preventing the needle holder from being detached.
  • the push rod assembly 84, the annular retracting spring 83, the concave positioning groove 811, the U-shaped retracting working slide 812 and the clasp 822 of the embodiment are respectively combined with the push rod assembly 14 of the first embodiment, and the annular retracting The spring 13, the concave positioning groove 111, the U-shaped retracting working slide 112 and the hook 122 are the same.
  • the above embodiments are merely illustrative of the principles of the invention and its advantages, and are not intended to limit the invention. Modifications and variations of the above-described embodiments can be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of the invention should be as defined by the claims.

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Description

医疗药物安全注射装置及用于医疗药物注射之推杆组合件 技术领域 本发明涉及一种安全注射装置，且特别涉及一种得以单手操作并可自 动让用毕针头回缩之自动回缩式医疗药物安全注射装置 （Automatically Retractable Medically Safety Injector ) 及其推杆组合件 ( Plunger Combination)。 背景技术 传统药物注射时， 为降低如艾滋病、 B型肝炎、 C型肝炎等血液交互 感染疾病的罹患风险，杜绝药物成瘾者重复使用以及防止医护人员在注射 时不慎被用毕针头扎伤， 目前广泛使用的注射注射器多半采用不可重复使 用之安全设计， 也就是一次使用完毕后即行毁损之注射器一次性注射器 (Disposable Syringe )0 然而， 这种一次性使用的安全注射器在设计上为 便于使用者注射时施力， 操作上多需要以双手持握固定角度才能注射。 如 此， 当糖尿病患者需自行注射胰岛素（Insulin), 无法同时以双手操作注射 器时，往往必须被迫以一般注射器取代安全注射器而增加危险传染病感染 之风险。 为此， 台湾第 520995号专利案 "自动回縮式安全注射器"及美国第 6,712,793 B1号专利 " Needle Guard Assembly for the Needle of A Syringe Body " 提出一种方便单手操作之新颖安全注射器。如图 1A及图 1B所示， 此注射器包含中空药筒 12'(Barrel)、咬合针头 10'之针座 1 Γ (Needle Hub)、 环形回縮弹簧 13'及可压断内缩式推杆 14' (Breakable Retracting Plunger) 0 其中， 该可压断内缩式推杆 14'包括一体形成 (One-pierce)之前段推杆 17'、 断裂部 18' (Breakable Connection), 及空心后段推杆 19'。 当该可压断内缩 式推杆 14'组装到中空药筒 12'内完成药液注射以后，使用者持续朝针头施 力可令该断裂部 18'破裂， 导致该前段推杆 17'缩入中空后段推杆 19'之空 心处而腾出空间让针座 1Γ带动用毕针头 10，一起收纳至该中空药筒 12' 内。
然而， 上述可压断内缩式推杆考虑施力及人员操作性， 在推杆断裂部 的对称性以及精密度上要求很高，导致推杆制作过程中一体射出成型所用 的模具尺寸误差的容许范围很小，并且很难防止推杆在组装搬运过程中造 成之断裂， 如此合格率及产量难以提高， 模具成本也无法下降。 再则， 由 于推杆断裂部的精密设计需配合有效的施力角度才能发挥安全回缩功能， 因此， 当药物注射部位属于弯曲度较大或人体较为精细的器官， 如头部、 耳后、 眼睛、 口腔等部位时， 医护人员不仅难以单手注射， 更容易因为注 射角度受限、 不容易操作而不慎损及注射器功能， 造成患者不适。 发明内容 本发明之主要目的， 在于提供一种方便单手操作， 不易因为人员操作 角度或姿势而导致注射器于注射当中毁损之医疗药物安全注射装置及其 推杆组合件。
本发明之另一个目的， 在于提供一种组装过程中不易使注射器受损， 提高产品质量及合格率， 增加产品可靠度， 减少原物料浪费以及处理成本 之医疗药物安全注射装置及其推杆组合件。
本发明之再一个目的， 在于提供一种便于塑料射出成型， 并可降低模 具精密度要求， 让产品质量之误差容许率落在合理范围内， 进而降低制造 成本之医疗药物安全注射装置及其推杆组合件。
本发明之又一个目的， 在于提供一种具备施力缓冲及抗横向剪力功 能， 提高人员注射时操作的便利性， 减少注射失败率及患者痛苦之医疗药 物安全注射装置及其推杆组合件。
本发明之复一个目的， 在于提供一种可增加模具单一批次产能， 大幅 提高产品生产数量之医疗药物安全注射装置及其推杆组合件。 本发明之再一个目的，在于提供一种让推杆达到预设力学强度及良好 操作性， 方便用毕针头自动回縮之医疗药物安全注射装置及其推杆组合 件。
基于上述及其它目的， 本发明披露一种用于将液态医疗药物注入肌 肉、 皮下及静脉或抽血， 且仅供单次使用 （Single use)之自动回缩式医疗 药物安全注射装置 (Automatically Retractable Medically Safety Injector), 以及包含在该装置内之推杆组合件 （Plunger combination)。 该医疗药物安全注射装置至少包括有： 连接针头之针座、 中空药筒 (Hollow Barrel), 该药筒可扣持该针座， 并且引导注射完毕之针座朝注射 反方向回縮， 以及安置于该中空药筒内之推杆组合件， 该推杆组合件包含 有内缩杆 （Retractable Plunger) 及与该内缩杆套接之中空杆 （Hollow Shank), 该内缩杆在套接部位之外侧壁上形成有至少一个凸起部， 以与形 成于该中空杆内侧壁上之至少一个凹陷部对应卡箝， 当该医疗药物注射装 置注射完成并且使用者持续对该推杆组合件施力时， 该内缩杆顺势退入中 空杆， 以腾出药筒空间来收容用毕之针座。 本发明所披露之医疗药物安全注射装置， 在推杆组合件上， 该中空杆 与内缩杆之前后关系允许任意置换。尤其， 为使内缩杆在回退过程中达到 较佳之效果，本发明亦披露于该内缩杆在其与中空杆套接部位的核心处开 设有一个或多个横向应力调节口，或是于该中空杆斜面缘另外开设至少一 个应力调节口， 其中形成于中空杆斜面缘之应力调节口， 其纵深位置尚未 到达中空杆内侧之凹陷部。 为配合使用者在注射过程中， 单手施力的强度或角度等各种可能， 本 发明之医疗药物安全注射装置在推杆组合件之内缩杆与中空杆上，亦提供 了进一步的强化设计。 如第二实施例所述， 本发明之医疗药物安全注射装置及其推杆组合 件， 在该中空杆距离针头远程之侧壁上增设有一个或多个排气开孔， 以通 过中空杆上开设的排气开孔， 让内縮杆回缩至该中空杆时， 发挥适当排气 功能， 避免空气阻力影响拇指手感而便于人员操作。 同样地， 若该推杆组 合件之内缩杆靠近药筒后端时，该内缩杆距离针头远程之侧壁上也可增设 一个或多个排气幵孔， 以通过该排气开孔而产生较佳之排气功能。
第三及第四实施例则是于内缩杆外侧之凸起部位置， 以至少一个横向 外凸环肋或是一至多排相邻或间隔排列之横向外凸点取代前述凸起部； 同 时， 相对应地在该中空杆内侧之凹陷部位置， 形成至少一个内凹环肋或是 一至多排相邻或间隔排列之环状凹槽来取代上述凹陷部。 更进一步， 如第五实施例所述， 于该内缩杆与中空杆套接部位， 沿着 该内缩杆回缩方向，在该中空杆侧壁靠近内缩杆底缘之部位形成多个阻挡 件 （Stopper), 或是在内缩杆之凸起部上方形成粗糙部 （如第六实施例）， 以此抵消或缓冲使用者按压推杆时过强的施力， 防止尚未注射完毕的内缩 杆提前退入中空杆而注射失败。 又，本发明之医疗药物安全注射装置及其推杆组合件为提高制造合格 率和人员操作性， 在针座上亦采用较佳之设计。 如第七实施例所述， 该医 疗药物安全注射装置为提高针座的回缩合格率，在药筒前段一体形成有口 径小于药筒之窄筒部， 以此收纳压缩状态之弹簧以及部份针座， 其中， 该 药筒连接窄筒部之开口处设有至少一个中空阻挡件 （活动式挡环）， 且该 阻挡件中空部内径小于部份针座， 以避免该针座在注射受力时过度外脱， 并引导注射完毕之针座回缩。
另外， 除增设中空阻挡件外， 本发明第八实施例亦披露一种采用射出 成型技术， 于该药筒形成时， 在窄筒部开口一体形成仅能容许针头及部份 针座通过之瓶颈部， 透过中央设有通孔之瓶颈部， 一样可以阻挡针座而控 制针座外伸距离维持在最佳回退位置。 不同于前案推杆一体成型的断裂部 （Breakable Connection), 本发明 之医疗药物自动回缩式安全注射装置及其推杆组合件系采用分离式设计， 将塑料或橡胶等弹性材质之内缩秆和中空杆分别射出成型，完成之后再行 组装， 如此可以减少推杆在组装时不慎碰撞受损， 降低拆封前及使用过程 中， 由于推杆毁损所产生的注射失误， 而且， 两件式推杆分别成型完成再 行组装，推杆对于成型模具的精密度要求可以不像一体成型式断裂部推杆 需考虑接合部位的力平衡而较为宽松， 因此模具开发成本少， 并提高产品 的可靠性及质量稳定性。
再一方面，两件式推杆组合件在抗横向剪力上具有优于已有注射器断 裂部推杆之力平衡特性，因此患者自行以单手注射或医护人员注射较难施 力之部位时， 亦不致因为注射角度或姿势限制而影响操作。 附图说明
图 1A及图 1B为公知具断裂部推杆之自动回缩式安全注射器之剖面 示意图；
图 2 为本发明第一实施例之医疗药物安全注射装置及其推杆组合件 之立体分解示意图；
图 3为本发明第一实施例之医疗药物安全注射装置中，推杆组合件之 剖面示意图以及局部放大图；
图 4为本发明第一实施例之医疗药物安全注射装置中，推杆组合件内 缩杆与中空杆套接之工作示意图；
图 5为本发明第一实施例之医疗药物安全注射装置中，中空杆之立体 示意图；
图 6A及图 6B为本发明第一实施例另一实施方式之医疗药物安全注 射装置之剖面示意图；
图 7为本发明第二实施例之医疗药物安全注射装置中，中空杆之分解 剖面示意图；
图 8为本发明第三实施例之医疗药物安全注射装置中，推杆组合件之 剖面立体图；
图 9为本发明第四实施例之医疗药物安全注射装置中，推杆组合件之 剖面示意图；
图 10为本发明第五实施例之医疗药物安全注射装置中， 推杆组合件 之剖面示意图；
图 11为本发明第五实施例之医疗药物安全注射装置中， 内缩杆退入 空杆之动作分解示意图；
图 12为本发明第六实施例之医疗药物安全注射装置中， 具粗糙部内 杆之立体示意图；
图 13为本发明第七实施例之医疗药物安全注射装置之分解示意图； 图 14为本发明第八实施例之医疗药物安全注射装置之分解示意图。
主要元件标记说明
医疗药物安全注射装置
10, 10 70 80 针头
11 11', 71, 81 针座
110,710,810 圆盘挡片
111,711,811 内凹定位槽
112,712,812 U形回缩工作滑道
12, 12 72, 82 中空药筒
~
120 m
121 后端
122, 822 扣钩
13, 13', 73, 83 环状回缩弹簧
14, 74, 84 推杆组合件
14' 可压断内缩式推杆
15,25,35,45, 55, 内缩杆
150, 550, 650 凸起部
151, 163,551,263 应力调节口 152 (内缩杆之） 杆体底缘
159 延伸翼
16, 26, 36, 46, 56 中空杆
160 凹陷部
162, 262 (中空杆之） 缘部
17' 前段推杆
18' 断裂部
19' 后段推杆
264 排气开孔
350, 450, 550 横向外凸环肋
260, 360, 460, 560 内凹环肋或环状凹槽
564 阻挡件
655 粗糙部
72a, 82a 窄筒部
72b 开口处
75 活动式或固定式档环
75a 通孑 L
85 瓶颈部
A 推杆组合件之套接部份
具体实施方式 以下通过特定的具体实施例说明本发明之实施方式，所属技术领域的 技术人员可由本说明书所披露之内容轻易地了解本发明之其它优点与功 效。本发明亦可通过其它不同的具体实施例加以施行或应用， 本说明书中 的各项细节亦可基于不同观点与应用，在不悖离本发明之精神下进行各种 修饰与变更。 图 2、图 3及图 4分别表示本发明用于将液态医疗药物注入人体皮下、 肌肉及静脉或抽血， 且仅供单次使用（Single use)之自动回縮式医疗药物 安全注射装置 （Automatically Retractable Medically Safety Injector), 以及 该装置内之推杆组合件 （Plunger combination)之各部分立体及剖面示意 图。 其中须注意的是， 上述这些附图均为简化之示意附图， 而仅以示意形 式说明本发明之较佳实施例。上述这些附图中所显示与本发明有关之组件 非为实际实施方式， 本发明实际实施时之组件数目、形状及尺寸比例为一 种选择性的设计， 且其组件布局型态往往更加复杂。
请参照图 2， 本发明第一实施例之自动回缩式医疗药物安全注射装置 1 (Automatically Retractable Medically Safety Injector) 至少包括有： 连接 针头 10之针座 （Needle Hub) 11、 中空药筒 12 (Hollow Barrel)以及安置 于中空药筒 12内之推杆组合件 14， 中空药筒 12可扣持该针座 11， 并通 过至少一个环形回缩弹簧 13引导注射完毕之针座 11朝注射反方向回缩。 详言之， 针座 11的一端容纳针头 10并且贯穿针座 11中心部， 针座 11的另一端则设置圆盘档片 110提供呈现压縮状态之环形回縮弹簧 13抵 接之用。 在针座 11两端间的适当位置上设有多个内凹定位槽 111及连接 定位槽 111之 U形回缩工作滑道 112， 这些内凹定位槽 111是用来与中空 药筒 12前端 120形成卡扣， 当环形回縮弹簧 13解除压缩状态时， 脱离卡 扣之针座 11便沿着 U形回縮工作滑道 112朝注射方向之反方向回缩， 而 针座 11回缩的距离可通过 U形回缩工作滑道 112控制避免针头 10外露。 但，此处之环形回缩弹簧 13，除环形回縮弹簧外，任何其它足以产生压縮、 释放等弹性回复力之组件 （如折叠金属弹片等） 皆为该环形回缩弹簧 13 之等效置换适用范围。
又， 中空药筒 12具有前端 120及后端 121， 如图 2所示， 该中空药筒 12之前端 120设有多个略具弹性且面向圆心之扣钩 122，在未使用之一般 状态及注射过程中， 扣钩 122稳定卡扣于针座 11之内凹定位槽 111内， 直待注射完毕以后使用者向针头方向施力， 间接压迫各扣钩 122弹性扩张 时， 该针座 11才会因为与药筒前端之扣钩 122间的卡扣解除而回缩至中 空药筒 12内。 请参照图 3， 本发明第一实施例之自动回缩式医疗药物安全注射装置 1的主要特征在于推杆组合件 14的设计。 如图所示， 该推杆组合件 14由 两段式结构而且分别射出成型之内缩杆 15 (Retractable Plunger)及中空杆 16 (Hollow S anl )所组装而成， 其中内縮杆 15之底部套接于中空杆 16， 且如图中局部放大图 （即套接部位 A) 所示， 该内缩杆 15之外侧壁上形 成有多个凸起部 150，而中空杆 16内侧壁上则形成有多个与该凸起部 150 相对应之凹陷部 160，于推杆组合件 14未使用时之一般状态或是在注射过 程中，该内缩杆 15之凸起部 150与该中空杆 16之凹陷部 160形成紧密卡 箝， 只有当注射完毕， 并且使用者施力按压迫使这些凸起部 150脱离凹陷 部 160时， 内缩杆 15才会退入中空杆 16， 并把内缩杆 15在中空药筒 12 内所占据的部份空间腾出来收容回缩之针座（此处未图示， 请参照图 2针 座 11 )。
此外， 图 3中显示的内缩杆 15或中空杆 16是由聚乙烯 (Polyethylene, PE)塑料、 聚氯乙烯或橡胶等略具弹性之材质， 或是聚丙烯 (Polypropylene, PP)、 或 AN系列之透明硬质塑料， 以模具射出成型制得。 通过透明硬质 塑料及弹性材质提供的刚性 （Stiffoess) 让内缩杆 15与中空杆 16维持适 当的注射力 (desirable injecting force), 本实施例中该内縮杆 15的主干部份 可做成十字肋或者是管柱状。 为维持推杆应力平衡， 本发明第一实施例再提出另一种变型， 在该内 缩杆 15在其与中空杆 16之套接部位 A的核心处开设有一个或多个横向应 力调节口 151， 该应力调节口 151例如是凹穴、 盲孔或是通孔， 同时这些 横向应力调节口 151 之纵深位置， 一般来说接近或并未到达该内縮杆 15 外侧壁凸起部 150的形成位置。如此一来， 当医疗药物安全注射装置完成 注射且推杆组合件 14继续受力时， 将容许横向应力调节口 151发生形变 并用以解除凸起部 150与凹陷部 160之卡箝。 进一步来说， 本实施例中的凸起部 150可以是在内縮杆 15射出成型 时一并形成之凸点， 凸点的形状、 大小、 数量、 排列均无明显限制， 但本 实施例以六个对称凸点作为较佳实施例之例示，而且例如外凸环肋也包含 在本实施例所述之凸起部 150之等效范围内。
至于中空杆 16之结构请参照图 4所示。为达成其与内缩杆 15套接并 且紧密卡箝之目的，该中空杆 16在其杆体内侧壁与该内縮杆 15套接的附 近，形成有多个可与该凸起部 150对位卡箝之凹陷部 160。这些凹陷部 160 可为凹槽、 凹洞， 或是部份或完整之内凹环肋， 而凹陷部 160截面则可为 C形、 角圆形或不规则形。 凡是可与内缩杆 15相对应之凸起部 150紧密 卡箝之构形， 皆为本实施例凹陷部 160之等效范围所包含。但本实施例以 完整内环的凹肋者作为凹陷部 160之较佳实施例， 以避免内縮杆 15组装 时受限于该凸起部 150之几何位置而无法旋转。 如详细检视推杆组合件 14之内缩杆 15与中空杆 16之套接部位 A， 如图 4放大图所示， 内缩杆 15在凸起部 150下方之杆体底缘 152采用圆 角设计， 而中空杆 16开口内侧之缘部 162则形成弧状面、 圆角面或斜面， 致使中空杆 16开口缘部 162之内侧口径可等同或略大于内缩杆 15之杆体 底缘口径， 如此一来， 当注射完毕卡箝解除后， 内缩杆 15便可顺势滑入 中空杆 16内而顺利完成退入动作。 由于推杆组合件 14在实际量产时， 内缩杆 15与中空杆 16之间的退 回力及拉力强度需符合力学测试标准， 因此， 如图 5所示， 在本发明第一 实施例中也披露另一种变型， 于中空杆 16之设有斜面的缘部 162另外开 设有至少一个应力调节口 163， 该应力调节口 163之纵深位置尚未到达中 空杆 16内侧凹陷部 160位置， 并且该应力调节口 163亦可例如为凹穴或 是盲孔。 然而， 又， 本发明之医疗药物安全注射装置 1， 在推杆组合件 14上， 该中空杆 16与内縮杆 15之前后关系可以任意置换，在相对位置上并无明 显限制。 除如同图 3所示， 于靠近针座 11处设置内缩杆 15， 致使完成注 射之内缩杆 15回退工作方向与针座解除卡扣（detached)后的退入方向趋 于一致以外， 亦可如另一实施例变化， 将内缩杆置于药筒后段远离针座之 处。 请参照图 6A 所示， 此实施例之推杆组合件 14 亦是由内缩杆 15 (Retractable Plunger)及中空杆 16 (Hollow Shanl ) 两段式组装而成， 该 内缩杆 15之外侧壁上形成有多个凸起部 150， 该中空杆 16内侧壁上则形 成有多个与该凸起部 150相对应之凹陷部 160，令推杆组合件 14于未使用 之一般状态或是在注射过程中， 该内缩杆 15之凸起部 150与该中空杆 16 之凹陷部 160形成紧密卡箝。 然而， 不同处在于， 该中空杆 16与内缩杆 15 之前后位置互相调换， 当注射完毕， 使用者持续施力按压迫使内缩杆 15顶部内侧壁上这些凸起部 150脱离凹陷部 160时， 内缩杆 15才会退入 中空杆 16， 此时如图 6B所示， 内缩杆 15退入中空杆 16的回退方向相反 于卡扣解除后之针座 11退入方向。 甚至， 为配合药筒 12后段设置内缩杆 15之推杆组合件 14于单手注射时有较佳的操作性， 本实施例较佳实施方 式亦可在中空的药筒 12末端及内缩杆 15底部两侧， 分别增设延伸翼 159 来控制内缩杆 15回退距离， 以预留足够药筒空间容纳针座 11。 但此处所述之各种实施方式，均属于本发明第一实施例可实施范围之 较佳实施方式而非据以为限，凡是由中空杆与内缩杆两段式套接而成之推 杆组合件， 无论该中空杆及内縮杆之套接顺序、 卡扣方式或分段接合等变 化， 均包含于本发明易于思及且能合理扩张之等效范围内。 同时为配合使 用者在注射过程中， 单手施力的强度或角度等各种可能， 本发明之医疗药 物安全注射装置在推杆组合件之内縮杆与中空杆上，亦提供了进一步强化 设计。 图 7至图 14说明本发明医疗药物安全注射装置及其推杆组合件各种 实施例变化。 但以下实施例均大致相同于前述第一实施例， 仅于特征部位 略有差异， 因此第二至第八实施例仅说明与前述实施例不同之特点， 其它 相同于第一实施例之各部组件不再重复赘述。
图 7 显示本发明第二实施例之医疗药物安全注射装置及其推杆组合 件。 如图所示， 本实施例之推杆组合件之中空杆 26在距离套接部位 （如 图 3之 A所示）远程之侧壁上增设有一个或多个排气开孔 264， 通过这些 排气开孔 264， 令内缩杆 25回缩至中空杆 26时， 不至于因为空气阻力而 影响拇指手感， 进而便利于人员操作。本实施例以内凹环肋 260取代第一 实施例之凹陷部 160， 而缘部 262及应力调节口 263则分别相同于第一实 施例之缘部 162和应力调节口 163。 请参照图 8， 在本发明第三实施例之医疗药物安全注射装置及其推杆 组合件中， 在内缩杆 35外侧以横向且轮廓变化为连续或不连续之外凸环 肋 350来取代第一实施例的凸起部 150; 同时，也相对地在中空杆 36形成 一轮廓变化为连续或不连续之内凹环肋 360或是一至多个轮廓变化为连续 或不连续之环状凹槽 360来取代第一实施例之凹陷部 160。 外凸环肋 350 及内凹环肋 360除采用单排设计之外，亦可采用图 9本发明第四实施例医 疗药物安全注射装置及其推杆组合件所示之多排结构。
如图 9所示， 在本发明第四实施例中， 该推杆组合件在内缩杆 45外 侧， 以上下多排相邻排列或间隔排列且横向轮廓变化为连续或不连续之外 凸环肋 450取代第一实施例之凸起部 150; 并且， 也相对地在中空杆 46 内侧相应位置，形成上下多排相邻排列或间隔排列且轮廓变化为连续或不 连续之内凹环肋 460或是轮廓变化为连续或不连续之环状凹槽 460来取代 第一实施例之凹陷部 160。 另一方面， 在注射过程中， 为让推杆组合件之内缩杆符合拉力和退回 力的力学要求，本发明在前述中空杆之凹陷部或内凹环肋或环状凹槽下方 也披露了进一步改良。 如图 10所示， 本发明第五实施例之医疗药物安全 注射装置及其推杆组合件， 于推杆组合件套接部位 A， 沿着内缩杆 55退 回方向， 在中空杆 56之内侧壁上的凹陷部或内凹环肋或环状凹槽 560下 缘附近， 形成多个阻挡件 564 (Stopper) , 并通过这些阻挡件 564增强内 缩杆 55注射时之反作用力，让内縮杆 55与中空杆 56组合结构更为牢固。 其中， 该阻挡件 564可为中空杆 56射出成型时一体形成之凸部或另外增 设的挡块 （Blocks), 且阻挡件 564之沿伸面与中空杆 56纵轴之间系维持 直角， 或形成与内缩杆 55退入方向一致之滑角倾斜。 在本发明第五实施例之较佳实施例里， 阻挡件 564被设计成具有和内 缩杆 55退入方向一致之向下斜角。 因此， 如图 11所示， 当药液注射完毕 以后， 使用者向推杆组合件施力， 可使该内缩杆 55之凸起部 550朝应力 调节口 551横向内缩而同步收进中空杆 56,此时， 阻挡件 564向下倾斜的 滑角会顺势引导内缩杆 55滑入。 又， 由于中空杆 56之材质略具弹性， 使 用者向推杆组合件施力亦会导致中空杆 56缘部的应力调节口 563瞬间横 向外扩， 如此将使得内缩杆 55更容易进入中空杆 56中。 图 12说明本发明第六实施例之医疗药物安全注射装置及其推杆组合 件， 如图所示， 在本实施例中， 内缩杆 65外侧壁面上之凸起部 650于上 方形成有粗糙部 655， 例如参差凹凸沟、 横纹或不平滑颗粒表面所构成， 通过粗糙部 655抵消或缓冲使用者按压推杆时过强的施力， 防止尚未注射 完毕的内缩杆 65提前退入中空杆 （未图示） 而造成注射失败。 本发明之医疗药物自动回縮式安全注射装置及其推杆组合件采用两 段分离式设计， 将塑料或橡胶等弹性材质之内缩杆和中空杆分别射出成 型， 完成之后再行组装， 如此可以减少推杆在组装时不慎碰撞受损， 降低 拆封前及使用过程中， 由于推杆毁损所产生的注射失误， 而且， 两件式推 杆分别成型完成再行组装，推杆对于成型模具的精密度要求可以不像一体 成型式断裂部推杆需考虑接合部位的力平衡而较为宽松， 因此模具开发成 本少， 并提高产品的可靠性及质量稳定性。 再一方面，两件式推杆组合件在抗横向剪力上具有优于已有注射器断 裂部推杆之力平衡特性， 因此患者自行以单手注射或医护人员注射较难施 力之部位时， 亦不致因为注射角度或姿势限制而影响操作性。 尤其， 为强化制造合格率和人员操作性， 本发明之医疗药物安全注射 装置及其推杆组合件， 在针座上也采用最佳设计。 图 13及图 14即分别配 合第七实施例和第八实施例予以详细说明。 如图 13所示， 本发明第七实施例之医疗药物安全注射装置及其推杆 组合件 74为提高针座回缩之合格率，在中空药筒 72前段一体形成口径小 于中空药筒 72之窄筒部 72a， 以收纳压缩状态之环形回縮弹簧 73以及针 座 71前半部， 其中， 该中空药筒 72连接窄筒部 72a之开口处 72b容纳有 至少一个活动式或固定式挡环 75 , 用以防止针座 71于注射受力时外脱， 并且引导注射完毕之针座 71回缩，该活动式或固定式挡环 75中心处设有 通孔 75a以供针头 70及部份针座 71穿越， 而且该档环 75通孔 75a的面 积小于针座 71之圆盘挡片 710的面积， 以阻挡针座 71之圆盘挡片 710使 针座 71控制在最佳预设回退位置。 但该活动式或固定式挡环可为内壁平 滑或形成规则或不规择棘部之任一或多个环体，本实施例则以通孔形成放 射棘部之圆环为较佳实施方式。 本实施例之针头 70、 针座 71、 内凹定位 槽 711、 U型回缩工作滑道 712及环状回缩弹簧 73分别与第一实施例所述 之针头 10、 针座 11、 内凹定位槽 111、 U型回缩工作滑道 112及环状回縮 弹簧 13相同。 另外， 除于窄筒部 72a开口处 72b增设活动式或固定式档环 75之外， 如图 14所示， 本发明第八实施例亦披露一种在中空药筒 82射出成型时， 于中空药筒 82之窄筒部 82a与中空药筒 82连接之开口处， 直接形成一体 成型之瓶颈部 85， 该瓶颈部 85中央设有通孔， 且通孔面积小于圆盘挡片 810之面积， 因此瓶颈部 85可阻文件圆盘挡片 810而仅容许针头 80及针 座 81前半部穿越， 而同样足以达到前述实施例防止针座外脱的功用。 本 实施例之推杆组合件 84、环形回縮弹簧 83、 内凹定位槽 811、 U型回缩工 作滑道 812及扣钩 822分别与第一实施例之推杆组合件 14、环形回缩弹簧 13、 内凹定位槽 111、 U型回缩工作滑道 112及扣钩 122相同。 上述实施例仅为例示性说明本发明之原理及其功效，而非用于限制本 发明。 任何所属技术领域的技术人员均可在不违背本发明之精神及范畴 下， 对上述实施例进行修饰与变化。 因此， 本发明之权利保护范围， 应如 权利要求所列。

Claims

权 利 要 求 书 6P04158-PCT
1. 一种医疗药物安全注射装置， 包括：
连接针头之针座；
中空药筒， 其扣持该针座， 并且在该医疗药物安全注射装置完成注射 后引导该针座回缩至该中空药筒内； 以及
安置于该中空药筒内之推杆组合件，该推杆组合件包含内縮杆及与该 内缩杆部份套接之中空杆，该内缩杆在套接部位之外侧壁上形成有至少一 个凸起部， 以与形成于该中空杆内侧壁上之至少一个凹陷部对应卡箝， 其 中， 该内缩杆核心部设有至少一个应力调节口， 当该推杆组合件在注射完 成后继续受力时，该应力调节口会受力形变而解除该凸起部与该凹陷部之 卡箝， 迫使该内缩杆顺势退入该中空杆。
2. 根据权利要求 1所述的医疗药物安全注射装置，其特征在于该推杆 组合件由两个分别射出成型之该内缩杆及该中空杆组装而成。
3. 根据权利要求 1所述的医疗药物安全注射装置，其特征在于该凸起 部为一体成型于该内缩杆上之向外凸点。
4. 根据权利要求 1所述的医疗药物安全注射装置，其特征在于该凸起 部为一至多排相邻排列之横向外凸环肋。
5. 根据权利要求 1所述的医疗药物安全注射装置，其特征在于该凸起 部为一至多排间隔排列之横向外凸环肋。
6. 根据权利要求 4或 5所述的医疗药物安全注射装置，其特征在于任 一该横向外凸环肋的轮廓变化为连续的。
7. 根据权利要求 4或 5所述的医疗药物安全注射装置，其特征在于任 一该横向外凸环肋的轮廓变化为不连续的。
8. 根据权利要求 1所述的医疗药物安全注射装置，其特征在于该内缩 杆之杆体底缘采用圆角设计。
9. 根据权利要求 1所述的医疗药物安全注射装置，其特征在于该内縮 杆之外侧壁在该凸起部上方开设有粗糙部。
10.根据权利要求 1所述的医疗药物安全注射装置， 其特征在于该应 力调节口为凹穴、 盲孔及通孔中之一个。
11. 根据权利要求 1所述的医疗药物安全注射装置， 其特征在于该中 空杆内侧之缘部形成弧状面、 圆角面及斜面中之一个。
12.根据权利要求 1所述的医疗药物安全注射装置， 其特征在于该凹 陷部为凹槽及凹洞中之一个。
13.根据权利要求 1所述的医疗药物安全注射装置， 其特征在于该凹 陷部为一至多排相邻排列之内凹环肋及一至多排间隔排列之内凹环肋中 之一个。
14.根据权利要求 1所述的医疗药物安全注射装置， 其特征在于该凹 陷部为一至多排相邻排列之环状凹槽及一至多排间隔排列之环状凹槽中 之一个。
15.根据权利要求 13或 14所述的医疗药物安全注射装置， 其特征在 于任一该内凹环肋或任一该环状凹槽之轮廓变化为连续的。
16.根据权利要求 13或 14所述的医疗药物安全注射装置， 其特征在 于任一该内凹环肋或任一该环状凹槽之截面为 C形。
17. 根据权利要求 13或 14所述的医疗药物安全注射装置， 其特征在 于任一该内凹环肋或任一该环状凹槽之截面为角圆形。
18. 根据权利要求 1所述的医疗药物安全注射装置， 其特征在于该中 空杆距离套接部位远程之侧壁上设有至少一个排气开孔。
19. 根据权利要求 1所述的医疗药物安全注射装置， 其特征在于该中 空杆在内侧壁上该凹陷部下缘附近形成有多个阻挡件。
20. 根据权利要求 19所述的医疗药物安全注射装置，其特征在于该阻 挡件与该中空杆纵轴维持直角。
21.根据权利要求 19所述的医疗药物安全注射装置，其特征在于该阻 挡件形成与该内缩杆退入方向一致之滑角倾斜。
22.一种医疗药物安全注射装置， 包括：
连接针头之针座；
中空药筒， 其扣持该针座， 并且在该医疗药物安全注射装置完成注射 后引导该针座回缩至该中空药筒内； 以及
安置于该中空药筒内之推杆组合件，该推杆组合件包含内縮杆及与该 内缩杆部份套接之中空杆，该内缩杆在套接部位之外侧壁上形成有至少一 个凸起部， 以与形成于该中空杆内侧壁上之至少一个凹陷部对应卡箝， 其 中， 该中空杆缘部设有至少一个应力调节口， 当该推杆组合件在注射完成 后继续受力时， 该应力调节口会受力形变而解除该凸起部与该凹陷部之卡 箝， 迫使该内缩杆顺势退入该中空杆， 以在该中空药筒内腾出空间收容回 缩之针座。
23. 根据权利要求 22所述的医疗药物安全注射装置，其特征在于该推 杆组合件由两个分别射出成型之该内縮杆及该中空杆组装而成。
24. 根据权利要求 22所述的医疗药物安全注射装置，其特征在于该凸 起部为一体成型于该内缩杆上之向外凸点。
25. 根据权利要求 22所述的医疗药物安全注射装置，其特征在于该凸 起部为一至多排相邻排列之横向外凸环肋。
26. 根据权利要求 22所述的医疗药物安全注射装置，其特征在于该凸 起部为一至多排间隔排列之横向外凸环肋。
27. 根据权利要求 25或 26所述的医疗药物安全注射装置， 其特征在 于任一该横向外凸环肋的轮廓变化为连续的。
28. 根据权利要求 25或 26所述的医疗药物安全注射装置， 其特征在 于任一该横向外凸环肋的轮廓变化为不连续的。
29. 根据权利要求 22所述的医疗药物安全注射装置，其特征在于该内 缩杆之杆体底缘采用圆角设计。
30. 根据权利要求 22所述的医疗药物安全注射装置，其特征在于该内 縮杆之外侧壁在该凸起部上方开设有粗糙部。
31.根据权利要求 22所述的医疗药物安全注射装置，其特征在于该应 力调节口为凹穴、 盲孔及通孔中之一个。
32.根据权利要求 22所述的医疗药物安全注射装置，其特征在于该中 空杆内侧之缘部形成弧状面、 圆角面及斜面中之一个。
33.根据权利要求 22所述的医疗药物安全注射装置，其特征在于该凹 陷部为凹槽及凹洞中之一个。
34.根据权利要求 22所述的医疗药物安全注射装置，其特征在于该凹 陷部为一至多排相邻排列之内凹环肋及一至多排间隔排列之内凹环肋中 之一个。
35.根据权利要求 22所述的医疗药物安全注射装置，其特征在于该凹 陷部为一至多排相邻排列之环状凹槽及一至多排间隔排列之环状凹槽中 之一个。
36.根据权利要求 34或 35所述的医疗药物安全注射装置， 其特征在 于任一该内凹环肋或任一该环状凹槽之轮廓变化为连续的。
37.根据权利要求 34或 35所述的医疗药物安全注射装置， 其特征在 于任一该内凹环肋或任一该环状凹槽之截面为 C形。
38.根据权利要求 34或 35所述的医疗药物安全注射装置， 其特征在 于任一该内凹环肋或任一该环状凹槽之截面为角圆形。
39.根据权利要求 22所述的医疗药物安全注射装置，其特征在于该中 空杆距离套接部位远程之侧壁上设有至少一个排气开孔。
40.根据权利要求 22所述的医疗药物安全注射装置，其特征在于该中 空杆在内侧壁上该凹陷部下缘附近形成有多个阻挡件。
41.根据权利要求 40所述的医疗药物安全注射装置，其特征在于该阻 挡件与该中空杆纵轴维持直角。
42.根据权利要求 40所述的医疗药物安全注射装置，其特征在于该阻 挡件形成与该内缩杆退入方向一致之滑角倾斜。
43.—种医疗药物安全注射装置， 包括： 连接针头之针座；
中空药筒， 其扣持该针座， 并且在该医疗药物安全注射装置完成注射 后引导该针座回缩至该中空药筒内； 以及
安置于该中空药筒内之推杆组合件，该推杆组合件包含内縮杆及与该 内缩杆部份套接之中空杆，该内縮杆在套接部位之外侧壁上形成有至少一 个凸起部， 并与形成于该中空杆内侧壁上之至少一个凹陷部对应卡箝， 当 该推杆组合件在注射完成后继续受力时，该凸起部与该凹陷部之卡箝被解 除， 迫使该内縮杆顺势退入该中空杆， 以在该中空药筒内腾出空间收容回 缩之针座。
44. 根据权利要求 43所述的医疗药物安全注射装置，其特征在于该内 缩杆于套接部位之核心处进一步设有至少一个应力调节口。
45. 根据权利要求 43所述的医疗药物安全注射装置，其特征在于该中 空杆于套接部位之缘部进一步设有至少一个应力调节口。
46. 一种用于医疗药物注射之推杆组合件， 包含： 内縮杆；
. 与该内缩杆部份套接之中空杆， 其中， 该内縮杆套接部位之外侧形成 有至少一个凸起部， 并与形成于该中空杆内侧之至少一个凹陷部对应卡 箝， 当注射完毕以后， 该推杆组合件继续受力时， 该凸起部与该凹陷部之 卡箝被解除， 迫使该内縮杆之至少一部份退入该中空杆内。
47. 根据权利要求 46所述的用于医疗药物注射之推杆组合件，其特征 在于该内縮杆于套接部位之核心处进一步设有至少一个应力调节口。
48. 根据权利要求 47所述的用于医疗药物注射之推杆组合件,其特征 在于该应力调节口为凹穴、 盲孔及通孔中之一个。
49. 根据权利要求 46所述的用于医疗药物注射之推杆组合件，其特征 在于该中空杆于套接部位之缘部进一步设有至少一个应力调节口。
50. 根据权利要求 49所述的用于医疗药物注射之推杆组合件，其特征 在于该应力调节口为凹穴及盲孔中之一个。
51.根据权利要求 46所述的用于医疗药物注射之推杆组合件，其特征 在于该凸起部为一体成型于该内缩杆上之向外凸点。
52. 根据权利要求 46所述的用于医疗药物注射之推杆组合件，其特征 在于该凸起部为一至多排相邻排列之横向外凸环肋。
53.根据权利要求 46所述的用于医疗药物注射之推杆组合件，其特征 在于该凸起部为一至多排间隔排列之横向外凸环肋。
54. 根据权利要求 52或 53所述的用于医疗药物注射之推杆组合件， 其特征在于任一该横向外凸环肋的轮廓变化为连续的。
55.根据权利要求 52或 53所述的用于医疗药物注射之推杆组合件， 其特征在于任一该横向外凸环肋的轮廓变化为不连续的。
56.根据权利要求 46所述的用于医疗药物注射之推杆组合件，其特征 在于该内缩杆之杆体底缘釆用圆角设计。
57.根据权利要求 46所述的用于医疗药物注射之推杆组合件，其特征 在于该内縮杆之外侧壁在该凸起部上方开设有粗糙部。
58.根据权利要求 46所述的用于医疗药物注射之推杆组合件，其特征 在于该中空杆内侧之缘部形成弧状面、 圆角面及斜面中之一个。
59.根据权利要求 46所述的用于医疗药物注射之推杆组合件，其特征 在于该凹陷部为凹槽及凹洞中之一个。
60.根据权利要求 46所述的用于医疗药物注射之推杆组合件,其特征 在于该凹陷部为一至多排相邻排列之内凹环肋及一至多排间隔排列之内 凹环肋中之一个。
61. 根据权利要求 46所述的用于医疗药物注射之推杆组合件，其特征 在于该凹陷部为一至多排相邻排列之环状凹槽及一至多排间隔排列之环 状凹槽中之一个。
62.根据权利要求 60或 61所述的用于医疗药物注射之推杆组合件， 其特征在于任一该内凹环肋或任一该环状凹槽之轮廓变化为连续的。
63.根据权利要求 60或 61所述的用于医疗药物注射之推杆组合件， 其特征在于任一该内凹环肋或任一该环状凹槽之截面为 C形。
64. 根据权利要求 60或 61所述的用于医疗药物注射之推杆组合件， 其特征在于任一该内凹环肋或任一该环状凹槽之截面为角圆形。
65. 根据权利要求 46所述的用于医疗药物注射之推杆组合件，其特征 在于该中空杆距离套接部位远程之侧壁上设有至少一个排气开孔。
66. 根据权利要求 46所述的用于医疗药物注射之推杆组合件，其特征 在于该中空杆在内侧壁上该凹陷部下缘形成有多个阻挡件。
67. 根据权利要求 66所述的用于医疗药物注射之推杆组合件，其特征 在于该阻挡件与该中空杆纵轴维持直角。
68. 根据权利要求 66所述的用于医疗药物注射之推杆组合件，其特征 在于该阻挡件形成与该内缩杆退入方向一致之滑角倾斜。
69. —种医疗药物安全注射装置， 包括：
连接针头之针座；
中空药筒， 其扣持该针座， 且在靠近该针座之前段一体形成有口径小 于该中空药筒之窄筒部，该中空药筒连接该窄筒部之开口处设有至少一个 阻挡件， 以防止该针座外脱并引导注射完毕之针座回缩； 以及
安置于该中空药筒内之推杆组合件，该推杆组合件包含一内缩杆及与 该内缩杆部份套接之中空杆，该内缩杆在套接部位之外侧壁上形成有至少 一个凸起部， 并与形成于该中空杆内侧壁上之至少一个凹陷部对应卡箝， 当该推杆组合件在注射完成后继续受力时，该凸起部与该凹陷部之卡箝被 解除， 迫使该内缩杆顺势退入中空杆， 以在该中空药筒内腾出空间收容回 缩之针座。
70. 根据权利要求 69所述的医疗药物安全注射装置，其特征在于该阻 挡件为活动式挡环。
71. 根据权利要求 69所述的医疗药物安全注射装置,其特征在于该阻 挡件为固定式档环。
72. 根据权利要求 70或 71所述的医疗药物安全注射装置， 其特征在 于该活动式挡环内设有通孔。
73. 根据权利要求 72所述的医疗药物安全注射装置，其特征在于该通 孔面积小于形成于该针座底部之圆盘挡片的面积。
74.一种医疗药物安全注射装置， 包括：
连接针头之针座；
中空药筒， 其扣持该针座， 且在靠近该针座之前段一体形成有口径小 于该中空药筒之窄筒部 , 该中空药筒连接该窄筒部之开口处一体形成有至 少一个瓶颈部， 以防止该针座外脱并引导注射完毕之针座回缩； 以及 安置于该中空药筒内之推杆组合件，该推杆组合件包含内縮杆及与该 内縮杆部份套接之中空杆，该内缩杆在套接部位之外侧壁上形成有至少一 个凸起部， 并与形成于该中空杆内侧壁上之至少一个凹陷部对应卡箝， 当 该推杆组合件在注射完成后继续受力时，该凸起部与该凹陷部之卡箝被解 除， 迫使该内缩杆顺势退入该中空杆内， 以在该中空药筒内腾出空间收容 回缩之针座。
75. 根据权利要求 74所述的医疗药物安全注射装置，其特征在于该瓶 颈部内设有通孔。
76. 根据权利要求 75所述的医疗药物安全注射装置，其特征在于该通 孔面积小于形成于该针座底部之圆盘挡片的面积。
PCT/CN2006/003708 2006-09-28 2006-12-30 Injecteur médical sécurisé et ensemble de piston pour la réalisation d'une injection médicale sécurisée Ceased WO2008037138A1 (fr)

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EP06840738.6A EP2085104B1 (en) 2006-09-28 2006-12-30 Medical safety injector and plunger combination for medical safety injection
BRPI0621930-6A BRPI0621930A2 (pt) 2006-09-28 2006-12-30 seringa médica de segurança e êmbolo combinado para injeção médica
ES06840738.6T ES2540930T3 (es) 2006-09-28 2006-12-30 Inyector médico de seguridad y combinación de émbolo para inyección médica de seguridad
MX2009003294A MX2009003294A (es) 2006-09-28 2006-12-30 Inyector de seguridad medico y combinacion de embolo para inyeccion de seguridad medica.
AU2006348935A AU2006348935B2 (en) 2006-09-28 2006-12-30 Medical safety injector and plunger combination for medical safety injection
CA2664361A CA2664361C (en) 2006-09-28 2006-12-30 Medical safety injector and plunger combination for medical safety injection
PL06840738T PL2085104T3 (pl) 2006-09-28 2006-12-30 Bezpieczny medyczny iniektor i kombinacja tłoczka dla bezpiecznej medycznej iniekcji
DK06840738.6T DK2085104T3 (en) 2006-09-28 2006-12-30 Medical safety injection device and piston combination for medical safety injection
JP2009529492A JP2010504772A (ja) 2006-09-28 2006-12-30 医療用薬物の安全注射装置と医療用薬物の注射に使用するプランジャーユニット

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WO2011088731A1 (zh) * 2010-01-20 2011-07-28 明辰股份有限公司 自动回缩式非液态物安全注射装置
CN102711877A (zh) * 2010-01-20 2012-10-03 明辰股份有限公司 自动回缩式非液态物安全注射装置
JP2013517072A (ja) * 2010-01-20 2013-05-16 明辰股▲分▼有限公司 自動格納式非液状物質安全注射装置
JP2013174360A (ja) * 2013-05-27 2013-09-05 Hamilton Bonaduz Ag 計量デバイス用の半径方向滑りシール要素およびそうした半径方向滑りシール要素を有する計量デバイス
JP2013208457A (ja) * 2013-05-27 2013-10-10 Hamilton Bonaduz Ag 計量デバイス用の半径方向滑りシール要素およびそうした半径方向滑りシール要素を有する計量デバイス
US11565054B2 (en) 2017-12-29 2023-01-31 Genentech, Inc. Injection monitoring device with delivery signature
US11896810B2 (en) 2017-12-29 2024-02-13 Genentech, Inc. Injection monitoring device with delivery signature

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ES2540930T3 (es) 2015-07-14
CA2664361A1 (en) 2008-04-03
BRPI0621930A2 (pt) 2011-12-20
CN101152589A (zh) 2008-04-02
EP2085104B1 (en) 2015-04-01
JP2010504772A (ja) 2010-02-18
CA2664361C (en) 2011-06-28
MX2009003294A (es) 2010-03-09
RU2009109943A (ru) 2010-11-10
AU2006348935B2 (en) 2011-09-29
KR20090048513A (ko) 2009-05-13
EP2085104A1 (en) 2009-08-05
RU2413543C2 (ru) 2011-03-10
MY151780A (en) 2014-07-14
ZA200902137B (en) 2010-05-26
EP2085104A4 (en) 2010-08-18
PT2085104E (pt) 2015-08-20
KR101074250B1 (ko) 2011-10-14
PL2085104T3 (pl) 2015-10-30
DK2085104T3 (en) 2015-07-06
AU2006348935A1 (en) 2008-04-03
CN100563740C (zh) 2009-12-02

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