WO2004014467A1 - Seringue - Google Patents

Seringue Download PDF

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Publication number
WO2004014467A1
WO2004014467A1 PCT/CN2002/000553 CN0200553W WO2004014467A1 WO 2004014467 A1 WO2004014467 A1 WO 2004014467A1 CN 0200553 W CN0200553 W CN 0200553W WO 2004014467 A1 WO2004014467 A1 WO 2004014467A1
Authority
WO
WIPO (PCT)
Prior art keywords
syringe
piston
elastic
balloon
needle
Prior art date
Application number
PCT/CN2002/000553
Other languages
English (en)
French (fr)
Inventor
Chang-Ming Yang
Original Assignee
Chang-Ming Yang
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 Chang-Ming Yang filed Critical Chang-Ming Yang
Priority to CN02829560.9A priority Critical patent/CN1668350A/zh
Priority to CA002497522A priority patent/CA2497522A1/en
Priority to AU2002323842A priority patent/AU2002323842A1/en
Priority to EP02754166A priority patent/EP1535639A4/en
Priority to PCT/CN2002/000553 priority patent/WO2004014467A1/zh
Publication of WO2004014467A1 publication Critical patent/WO2004014467A1/zh

Links

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
    • A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
    • A61M5/2053—Media being expelled from injector by pressurised fluid or vacuum
    • 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
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • A61M5/3221—Constructional features thereof, e.g. to improve manipulation or functioning
    • A61M2005/3231—Proximal end of needle captured or embedded inside piston head, e.g. by friction or hooks
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—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
    • A61M2005/3241—Needle retraction energy is accumulated inside of a hollow plunger rod
    • A61M2005/3242—Needle retraction by vacuum
    • 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
    • A61M5/1782—Devices aiding filling of syringes in situ
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
    • A61M5/31515—Connection of piston with piston rod

Definitions

  • the present invention relates to a syringe, in particular to a syringe capable of drawing blood or injecting medicament by compressed air or vacuum suction.
  • the main structure characteristics of the existing syringes are as follows: a needle seat is provided at the upper end of the syringe, and a needle is connected to the needle seat, wherein the syringe contains a piston pusher, and the piston is pushed into the syringe by pulling out the piston pusher A negative pressure is formed, and blood or medicine is sucked into the syringe, and then a piston push rod is pushed into the syringe, so that blood or medicine flows out of the needle.
  • a vacuum suction or pushing force is generated in the syringe, and then injection or extraction work is performed.
  • This method of manually pulling or pushing the piston push rod is easy during the injection or extraction process because the force of pulling or pushing the piston push rod is uneven, resulting in slow and fast situations, resulting in Discomfort or pain such as soreness and numbness occurs at the patient's application site.
  • An object of the present invention is to provide a syringe with a compressor that pushes a balloon inside the syringe into the medicine or blood to complete the injection action.
  • a secondary object of the present invention is to provide a syringe capable of sucking air in a balloon in a syringe using an air compressor to cause a vacuum suction force to be formed in the syringe and performing an extraction operation.
  • Another object of the present invention is to provide a syringe for accommodating an injection needle in a syringe body by compressing the resisting part of the needle socket to release the elastic fixing structure in the resisting part.
  • the present invention provides a syringe, which uses an air compressor to extract the air in the syringe, so that a vacuum suction force is generated in the syringe to extract the medicine or blood, or use the air
  • the air compressor injects air into the syringe, causes a pushing force to be generated in the syringe, and injects the medicine in the syringe into the patient.
  • the syringe injector comprises a syringe body, a needle socket, a balloon, a plunger, a nozzle and a delivery tube.
  • One end of the syringe body is provided with a needle cover sleeve, and the other end is An opening is formed.
  • a display and an alarm are connected to the air compressor.
  • the alarm will sound to notify the medical staff.
  • a controller In the syringe injector, a controller, an encoder and a flow meter are also connected to the air compressor, so that the syringe injector of the present invention can adjust the injection or extraction rate, and can also be used for timing and quantitative control.
  • the air compressor can also be replaced by a manual air compression structure, a vent valve is provided at the connection between the manual air compression structure and the delivery pipe, and a one-way air inlet is provided at the rear end of the manual air compression structure. Valve and a one-way exhaust valve.
  • the air compressor is provided with a pressure sensor, so that when the air compressor injects compressed air into the balloon, it can detect whether the balloon has a hole or air leakage from the pressure change in the balloon. 'When the air compressor is performing extraction or air supply, the pressure in the balloon can be used to know whether the injection site is blocked or leaking, and the pressure detector can read the artery when the syringe is pressed against the patient's skin. Pulse to guide medical staff to draw arterial blood.
  • the air compressor is provided with a power switch, which can be turned off by the power supply to interrupt the drawing or injection operation.
  • the air compressor is provided with an input / output device which can be connected with a computer, a PDA or a mobile phone.
  • the air compressor may be replaced by a hydraulic pump.
  • the air compressor can also be connected to a thin inflatable sleeve by a delivery tube, and the inflatable thin sleeve can replace the method of binding the upper part of the injection part with a rubber tie.
  • the inner edge of the cover of the needle cover is provided with a concave holding portion.
  • the needle socket is installed inside the syringe body, and the front end of the needle socket is an inserting part for inserting the injection needle.
  • the rear end of the needle socket has a resisting part, and an elastic fixing is provided in the resisting part.
  • the accommodating space of the structure releases the elastic fixing structure by compressing the abutting portion, so that the needle socket and the injection needle are accommodated in the body of the injection cylinder.
  • the balloon is a long strip, the balloon is made of a ductile material, the balloon is sleeved on the outer edge of the rear end of the syringe body, and the balloon is not sleeved on the syringe Outer part of the body Divided into the body of the syringe.
  • the plunger is a circular cylinder formed of an elastic material, and the plunger is plugged on an opening at the rear end of the syringe body.
  • an insertion part is formed at the front end of the nozzle, so that the nozzle can penetrate the plunger and penetrate into the balloon, and the insertion part is provided with several air holes, and the rear end of the nozzle is provided with a set of insertion parts.
  • a sleeve is connected to the sleeve part, and the other end of the sleeve connected with the nozzle is installed on the air compressor.
  • the balloon can also be replaced by a piston, and the outer edge of the piston is in close contact with the inner tube wall of the syringe body, so that a closed air chamber is created between the piston and the plunger.
  • the outer edge of the front end of the syringe body may also be provided with a flexible connection end, the other end of the connection end is connected to a barrel cap, and the barrel cap is concavely provided with a sleeve that can be sleeved on the injection tube.
  • the accommodating part of the outer edge of the sleeve cover of the front end of the body may also be provided with a flexible connection end, the other end of the connection end is connected to a barrel cap, and the barrel cap is concavely provided with a sleeve that can be sleeved on the injection tube.
  • the balloon may be replaced by a piston, and a hose is provided between the piston and the plunger, one end of the hose is connected to the piston and penetrates the piston, and the other end of the hose penetrates the plunger and connects to a A needle, and an outer cover made of a compressible material is sleeved on the outer edge of the needle.
  • an elastic element can also be wound around the rear end of the holding part of the syringe body, so that when the needle socket is received in the body of the syringe, the elastic element can be elastically moved toward the position of the needle socket.
  • a ring-shaped elastic element may be additionally provided between the syringe body and the resisting portion of the needle socket, and the elastic element is used to increase the resistance required to fix the resisting portion.
  • an accommodation space with an elastic fixing structure may not be provided in the resisting portion, and the resisting portion is made of an elastic material, and the outer edge of the resisting portion is connected to the inner cylinder wall of the syringe body.
  • the balloon is replaced by a piston, and a buckle surrounding the piston is provided on the outer edge of the piston in the direction of the abutting portion.
  • an accommodation space having an elastic fixing structure may not be provided in the resisting portion, and an elastic elastic ring is sleeved on the outer edge of the resisting portion, and one or There is more than one resisting member, and a piston is provided in the syringe body.
  • a position corresponding to the elastic ring on one side of the piston is extended with a protrusion surrounding the outside of the piston, and a holding space is formed between the protrusions.
  • a circular convex portion is protruded from the inner edge of the top end.
  • the receiving portion may not include an accommodation space with an elastic fixing structure, and a plurality of barbs with a barb are provided at the rear end of the resisting portion, and the syringe body is provided with an elastic material.
  • the receiving portion may not include an accommodation space with an elastic fixing structure, and a plurality of annular grooves are provided at the rear end of the retaining portion, and the outer edge of the balloon corresponds to the position of each annular groove.
  • the elastic fixing structure is abutted by two-phase staggered abutting pieces, and one of the abutting pieces extends with a protrusion, and the protrusion is extended outside the abutment portion and is held against the injection cylinder.
  • the inner side wall edge of the body, and the two abutting members are bonded with adhesive.
  • the outer edge of the needle socket where the injection needle is inserted may be provided with an outer ring body, and a screw thread is formed in the outer ring body.
  • the plunger may also be made of non-elastic material, and a plunger is provided in the plunger, and a quick connector is used instead of the nozzle, and a joint seat on the delivery pipe is connected with the quick connector.
  • the sleeve part at the rear end of the nozzle can also be replaced by a perforation part, and the outer circle of the perforation part gradually forms an inclined surface toward the rear end, and a plurality of buckling projections are provided on the inclined surface to make the perforation
  • each of the latching projections and the inner wall surface of the conveying pipe interfere with each other and come into close contact.
  • the balloon can be replaced by a piston.
  • a fixed groove is provided at the rear end of the piston.
  • a plurality of holding projections are provided at the opening of the fixed groove, and the fixed groove can be pushed and rotated by a piston push rod. fixed.
  • the accommodating part recessed in the barrel cap may also be replaced by a convex plug part, and the plug part may be plugged in a needle cover socket at the front end of the syringe body.
  • the cylinder cap may not be connected to the syringe body.
  • the piston can also be replaced by a balloon, and a ring-shaped convex portion around the outer edge of the balloon is provided near the front end of the balloon.
  • the elastic ring can also be made of non-elastic material.
  • the piston may also be made of non-elastic material, and the piston may also be provided with a plurality of guide holes at positions and numbers opposite to the tenon, and a lower end of each guide hole is provided with a comparative guide.
  • a receiving groove with a wide guide hole, and a passage for connecting a pipe to a needle socket for the passage of a medicament may be provided in the receiving groove.
  • the abutting portion may also be made of elastic material, and the side of the piston opposite to the direction of the abutting portion is provided with a plurality of hooks with barbs.
  • the elastic fixing structure may also be composed of one or more T-shaped stoppers and a plurality of springs, wherein one end of the spring is provided with a protrusion, and the protrusion is extended outside the abutment portion and held against The inner wall edge of the syringe body, and the other end of the spring abuts against the extended long side of the T-shaped stop, and the side of the accommodating space is provided with a groove into which the extended long side of the ⁇ -shaped stop can be inserted.
  • the elastic fixing structure can also use several springs to bear in the accommodating space of the abutting portion, so that both sides of the abutting portion abut against the edge of the side wall of the syringe body, and the accommodating space is in each spring.
  • Each side is provided with a top block.
  • the elastic fixing structure may also be composed of a plurality of holding components and an elastic ring made of an elastic material such as rubber, and the outer edge of the elastic ring abuts against the inner wall edge of the syringe body. The inside of the elastic ring is abutted against each holding component.
  • the quick connector can also be replaced by a general connector, and the delivery tube is connected at the rear end of the general connector.
  • the resisting portion may also be made of non-elastic material, and the resisting portion is provided with a plurality of guide holes at positions and numbers relative to the tenon, and a relatively guide hole is provided at the bottom end of each guide hole.
  • the accommodating groove is wide, and a passageway connected to the needle socket for the medicine to pass through can also be set in the accommodating groove.
  • the holding component is a triangular elastic piece bent from an elastic material, and two ends of the opening of the triangular elastic piece are respectively bent into a circular holding portion, and each holding portion is provided with a wrench.
  • Each of the holding pieces extends to the outer side of the triangular elastic piece, and the bottom of the triangular elastic piece forms an arc-shaped elastic structure.
  • FIG. 1 is a perspective view of a syringe of the present invention
  • FIG. 2 is an exploded perspective view of a syringe of the present invention
  • FIG. 3 is a schematic side view of the syringe of the present invention (1)
  • FIG. 4 is a schematic side view of a syringe of the present invention (II);
  • FIG. 5 is a schematic side view of the syringe of the present invention (III);
  • FIG. 6 is a schematic side view of a syringe of the present invention (IV);
  • FIG. 7 is a side sectional view of a needle socket of the present invention.
  • FIG. 8 is a schematic side view of the needle socket of the present invention.
  • FIG. 9 is a side cross-sectional view of a first embodiment of a syringe of the present invention.
  • FIG. 10 is a side cross-sectional view of an elastic fixing structure according to the present invention.
  • FIG. 11 is a schematic side view of the elastic fixing structure of the present invention.
  • FIG. 12 is a side sectional view of a first embodiment of an elastic fixing structure according to the present invention.
  • FIG. 13 is a schematic side view of the first embodiment of the elastic fixing structure of the present invention.
  • FIG. 14 is a side cross-sectional view of a second embodiment of an elastic fixing structure according to the present invention.
  • FIG. 15 is a schematic side view of a second embodiment of an elastic fixing structure according to the present invention.
  • 16 is a side sectional view of a first embodiment of a needle socket of the present invention.
  • 17 is a schematic side view (a) of the first embodiment of the needle socket of the present invention.
  • 18 is a schematic side view of the first embodiment of the needle socket of the present invention (two);
  • FIG. 19 is a side sectional view of a second embodiment of a needle socket of the present invention.
  • FIG. 20 is a schematic side view of a second embodiment of a needle socket according to the present invention (1);
  • FIG. 21 is a side sectional view of a third embodiment of a needle socket according to the present invention.
  • FIG. 22 is a schematic side view (a) of a third embodiment of a needle socket of the present invention.
  • FIG. 23 is a schematic side view of a third embodiment of the needle socket of the present invention (II);
  • FIG. 24 is a side sectional view of the fourth embodiment of the needle socket of the present invention.
  • 25 is a side sectional view of a fifth embodiment of a needle socket of the present invention.
  • 26 is a side sectional view of a sixth embodiment of a needle socket of the present invention.
  • FIG. 27 is a side sectional view of a seventh embodiment of a needle socket of the present invention.
  • FIG. 28 is a schematic side view of the seventh embodiment of the needle socket of the present invention (1);
  • FIG. 29 is a schematic side view of the seventh embodiment of the needle socket of the present invention (2);
  • FIG. 30 is a schematic view of the eighth embodiment of the needle socket of the present invention Side sectional view;
  • FIG. 31 is a configuration diagram of an air compressor of the present invention.
  • FIG. 32 is a side sectional view of another embodiment of the nozzle of the present invention.
  • Fig. 33 is a schematic side view of the second embodiment of the syringe of the present invention (1);
  • Fig. 34 is a schematic side view of the second embodiment of the syringe of the present invention (II);
  • Fig. 35 is a third view of the syringe of the present invention. Side sectional view of the embodiment;
  • FIG. 36 is an exploded perspective view of a piston and a plug plunger in a third embodiment of a syringe injector according to the present invention
  • FIG. 37 is a perspective external view of a fourth embodiment of the syringe injector according to the present invention.
  • FIG. 38 is an exploded perspective view of a fifth embodiment of the syringe of the present invention.
  • FIG. 39 is an exploded perspective view of a sixth embodiment of the syringe of the present invention.
  • FIG. 40 is a perspective external view of a first embodiment of a syringe body according to the present invention.
  • 41 is a perspective external view of a second embodiment of a syringe body according to the present invention.
  • FIG. 42 is a perspective external view of a third embodiment of the syringe body of the present invention.
  • FIG. 43 is a side sectional view of a ninth embodiment of a needle socket of the present invention.
  • 44 is a side sectional view of a tenth embodiment of the needle socket of the present invention.
  • Fig. 45 is a schematic side view of the seventh embodiment of the syringe in the present invention (1);
  • Fig. 46 is a schematic side view of the seventh embodiment of the syringe in the present invention (2);
  • air is drawn from the syringe of the syringe by the air compressor or air is injected into the syringe of the syringe, so that a pushing force or a vacuum suction force is generated in the syringe of the syringe to complete the action of extraction or injection.
  • the syringe of the present invention mainly includes:
  • a syringe body 1 one end of the syringe body 1 has a needle cover sleeve 11, the inner edge of the needle cover sleeve 11 is provided with a retaining portion 111, and the other end of the syringe body 1 forms an opening 12;
  • a needle socket 2 is installed inside the syringe body 1, and the front end of the needle socket 2 can be inserted with an injection needle.
  • the rear end of the needle socket 2 has a resisting portion 21, and an elastic fixing is provided in the resisting portion 21.
  • the accommodating space 22 of the structure 23, and the elastic fixing structure 23 is abutted by two abutting abutment pieces 231, one of which a protrusion 9 extends on the abutment piece 231, and the protrusion 9 extends on the abutting portion 21
  • the outer side is supported on the inner side wall edge of the syringe body 1, and the two abutment parts 231 are bonded by the adhesive 232;
  • balloon 3 is a long balloon 3 made of ductile material
  • a plunger 4, the plunger 4 is a circular cylinder formed of an elastic material
  • a nozzle 5 a front end of the nozzle 5 is formed with an insertion portion 51, and the insertion portion 51 is provided with a plurality of air holes 511, and the rear end of the nozzle 5 is provided with a set of insertion portions 52; and
  • a conveying pipe 6, the conveying pipe 6-end is sleeved in the sleeve portion 52 of the nozzle 5, and the other end is connected with an air compressor;
  • the balloon 3 is sleeved on the outer edge of the rear end of the syringe body 1 and plugged with an opening 12 at the rear end of the syringe body 1 with a plunger 4 so that the balloon 3 is sleeved on the outer edge of the syringe body 1. Both are pushed into the syringe body 1 with the plunger 4.
  • FIGS. 3, 4, 5, 6, 7, 8, and FIG. 9 When the syringe of the present invention is used, the injection needle and the needle cover 7 are inserted into the needle socket 2 first, and then the needle cover is inserted. 7 is removed, and the nozzle 5 penetrates the plunger 4 with the insertion portion 51 at the front end and penetrates into the balloon 3, and then the air is injected from the conveying pipe 6 through the air hole 511 of the nozzle 5 into the syringe body 1 by the air compressor.
  • the balloon 3 in the syringe body 1 is enlarged, and the balloon 3 is in an intimate state with the inner wall surface of the syringe body 1 after the balloon 3 is inflated, and then the injection needle inserted in the needle socket 2 is inserted into a medicine bottle or In the patient's blood vessel, the air in the balloon 3 is sucked out from the air hole 511 of the nozzle 5 through the delivery tube 6 by the delivery tube 6 using an air compressor, so that a vacuum suction force is generated in the syringe body 1 and the medicine or blood is sucked into the syringe.
  • the action of extracting the medicine or blood is completed, and then the injection needle is inserted into the patient's application part or the test tube storing the blood, and the air is sent from the delivery tube 6 through the nozzle 5 by the air compressor Into the syringe body 1
  • the balloon 3 is enlarged to push the medicine and blood in the space formed by the balloon 3 and the syringe body 1, and the medicine is injected into the patient's body from the needle socket 2 through the injection needle.
  • the air compressor continues to inject compressed air into the balloon 3, so that the balloon 3 continues to expand and compresses the abutting portion 21 of the needle socket 2, and the two phases of the abutting portion 21 are staggered against each other.
  • the piece 231 is pressed by the external force, the two abutting pieces 231 pierce the adhesive 232 and form a misalignment with each other.
  • the protruding piece 9 on the abutting piece 231 provided with the protruding piece 9 is retracted into the accommodation space 22 of the resisting portion 21.
  • the plunger 4 is formed by the insertion of the nozzle 5
  • the hole of the plunger 4 is tightly sealed by the elastic force of the material of the plunger 4; a ring-shaped elastic element 13 may be added between the syringe body 1 and the resisting portion 21 of the needle socket 2; the elastic resisting element 13 is used to increase the fixed resisting portion 21 Required resistance, the holding portion 111 of the needle cover sleeve 11 may also be Threadingly designed so that the needle cover 7 is screwed with the syringe body 1 is incorporated.
  • the elastic fixing structure 23 may also be composed of one or more T-stops 233 and a plurality of springs 234.
  • One end of the spring 234 is provided with a projection 9, and the projection 9 extends to resist.
  • the outside of the portion 21 is supported on the inner side wall edge of the syringe body 1, and the other end of the spring 234 is abutted against the extended long side of the T-stop 233, and the side of the accommodation space 22 is provided with a T-stop
  • the groove 221 is inserted into the extended long side of the block 233.
  • the elastic fixing structure 23 may also bear a plurality of springs 234 in the accommodating space 22 of the resisting portion 21, so that both sides of the resisting portion 21 abut against the edge of the inner wall of the syringe body 1.
  • the space 22 is provided with a top block 222 on one side of each spring 234.
  • the elastic fixing structure 23 may also be composed of several holding members 235 and elastic rings 236 formed of elastic materials such as rubber.
  • the holding member 235 is a triangular elastic sheet 2351 bent by an elastic material.
  • the two ends of the opening 12 of the triangular elastic piece 2351 are respectively holding portions 2352 that are bent into a circular shape, and a holding piece 2353 is sleeved in each holding portion 2352, and each of the holding pieces 2353 extends to the side of the triangular elastic piece 2351.
  • the bottom of the triangular elastic piece 2351 is a curved elastic structure.
  • the outer edge of the elastic ring 236 abuts against the inner side wall edge of the syringe body 1, and the inner side of the elastic ring 236 is abutted on each side.
  • the trigger 2353 is forced to open the second holding portion 2352 of the triangular elastic piece 2351, so that the elastic elastic ring 236 is collected into the triangular elastic piece 2351.
  • the interference force between the force ring 236 and the side wall surface of the syringe body disappears.
  • the abutting portion 21 of the needle socket 2 may not be provided with an accommodation space 22 having an elastic fixing structure 23, and an outer edge of the abutting portion 21 is provided with elasticity such as rubber.
  • the elastic ring 211 is made of material, and one or more holding members 212 are provided between the syringe body 1 and the resisting portion 21, and a piston 8 is provided in the syringe body 1, and one side of the piston 8 corresponds to The position of the elastic ring 211 is extended with a protrusion 9 surrounding the outside of the piston 8, and a holding space 82 is formed between the protrusions 9, and an inner convex portion 81 is protruded from the inner edge of the top of the protrusion 9, when the piston 8 receives When the air is pushed, the projection 9 of the piston 8 pushes the elastic ring 2 1 1 away from the outer edge of the resisting portion 21, so that the resisting portion 21 is accommodated in the holding space 82.
  • the ring-shaped convex portion 31 turns the elastic ring 211 pushes away from the outer edge of the blocking portion 21, so that the resistance generated by the elastic ring 211 between the blocking portion 21 and the syringe body 1 disappears, so that the needle socket 2 and the injection needle can be received in the syringe body 1, and
  • the elastic ring 211 can also be made of inelastic material.
  • the rear end of the abutment portion 21 may also be provided with a plurality of tenons 213 with barbs 2131, and the syringe body 1 is provided with a piston made of an elastic material. 8.
  • the tenon 213 of the resisting portion 21 is penetrated in the piston 8 or penetrates the piston 8.
  • the hole penetrated by the tenon 213 of the piston 8 is by the piston 8 itself.
  • the elastic force is restored and surrounded by the outer edge of the tenon 213, and the barb 2131 of the tenon 213 makes the piston 8 and the resisting portion 21 buckle together, and then the piston 8 is pulled out backward by the negative pressure, and the needle is also taken together.
  • the socket 2 and the injection needle are drawn into the syringe body 1.
  • the resisting portion 21 can also be made of an elastic material, and the piston 8 is provided with a plurality of latches with barbs 831 opposite to the side of the resisting portion 21 83;
  • the piston 8 may also be made of non-elastic material, and the piston 8 is provided with a plurality of guide holes 84 at the number and position relative to the tenon 213, and a more guide is provided at the bottom end of each guide hole 84.
  • the wide receiving groove 85 of the hole 84 allows the tenon 213 provided on the resisting portion 21 to be forced from the piston 8 when the piston 8 is pushed by the air.
  • the guide hole 84 is forced into the accommodation groove 85, and the barbs 2131 on the tenons 213 abut against the wall surface of the accommodation groove 85, so that the piston 8 is combined with the resisting portion 21, and then the piston 8 is combined with the needle by using negative pressure.
  • the socket 2 is pulled into the syringe body 1 together with the injection needle, and when the tenon 83 is provided on the piston 8, the resisting portion 21 can also be made of a non-elastic material, and the resisting portion 21 is tenoned relative to the piston 8.
  • Several guide holes 214 can also be set at the position and number of 83, and an accommodating groove 215 wider than the guide holes 214 is provided at the bottom end of each guide hole 214.
  • the aforementioned piston 8 or the blocking portion 21 A passageway connected to the needle socket 2 for the passage of the medicine can also be provided in the accommodation grooves 85 and 215. Please refer to FIGS. 27, 28 and 29.
  • the resisting portion 21 may also be made of elastic material. The outer edge of the resisting portion 21 is connected to the inner cylinder wall of the syringe body 1, and the balloon 3 is replaced by a piston 8. A hook 86 surrounding the piston 8 is provided on the outer edge of the piston 8 in the direction of the abutting portion 21.
  • the piston 8 When the piston 8 is pushed by air, since the abutting portion 21 is made of an elastic material, the hook 86 of the piston 8 The resisting portion 21 can be pressed into the syringe body 1 from the contact surface between the resisting portion 21 and the cylinder wall of the syringe body 1, so that the hook 86 of the piston 8 passes through the outer edge of the resisting portion 21 and is hooked on the resisting portion 21. Then, the piston 8 is pulled back by negative pressure. At this time, since the hook 86 of the piston 8 is hooked on the abutment portion 21, the piston 8 drives the needle socket 2 together with the injection needle into the syringe body 1.
  • the receiving portion 21 of the needle socket 2 may not be provided with an accommodation space 22 having an elastic fixing structure 23, and a plurality of annular grooves 216 are provided at the rear end of the resisting portion 21, and the outer edge of the balloon 3 corresponds to Each circular groove 216 is provided with a plurality of circular protrusions 32.
  • a display and an alarm are connected to the air compressor.
  • the alarm will sound to notify the medical staff
  • the air compressor is also connected with a controller and a code.
  • the device and the flowmeter enable the syringe of the present invention to adjust the injection or extraction rate, and can also perform timing and quantitative control.
  • a pressure sensor is installed on the air compressor to inject compressed air into the balloon 3 At the time, the pressure change in the balloon 3 is used to detect whether the balloon 3 has a hole or a leak, so that the air compressor can learn whether the injection site is blocked or leaking when the pressure in the balloon 3 is changed during extraction or air supply.
  • the power of the air compressor can be directly turned off to interrupt the extraction or injection operation, and when the blood is drawn from the artery, After the balloon 3 is enlarged, it is brought into close contact with the inner wall surface of the syringe body 1, and then the injection needle and the needle cover 7 are mounted on the needle.
  • the socket 2 and then the needle cover 7 is pressed against the patient's skin, and when the area covered by the needle cover 7 is an artery, the change read by the pressure sensor will be different from that of a general blood vessel.
  • the needle cap 7 can be removed and arterial blood can be drawn, and during the process of inserting the injection needle into the artery, the pressure sensor can still read the signal to guide the medical staff to perform the action of drawing arterial blood.
  • the air is compressed
  • the air compressor can also be replaced by a hydraulic pump.
  • the air compressor can also be connected to a thin air jacket by using a duct 6 to cover the air jacket.
  • the sleeve portion 52 at the rear end of the nozzle 5 may also be replaced by a perforation portion 53, and the outer edge of the perforation portion 53 gradually becomes an inclined surface toward the rear end, and a plurality of snap projections 531 are provided on the inclined surface.
  • the balloon 3 of the syringe of the present invention can also use a piston 8 generation Instead, the outer edge of the piston 8 is in close contact with the inner tube wall of the syringe body 1, so that a closed air chamber is created between the piston 8 and the plunger 4.
  • the rear end of the piston 8 is provided with a fixing groove 87, a fixing groove 87 openings are provided with a plurality of holding projections 871, and the opening of the piston 8 from the rear end of the syringe body 1 is installed in the syringe body 1.
  • the air is drawn out of the closed air chamber by the air compressor, so that a negative pressure is formed in the closed air chamber, and the piston 8 is pulled back, causing a vacuum suction force between the piston 8 and the needle socket 2 of the syringe body 1 to draw the medicine bottle.
  • the internal medicine is sucked from the injection needle into the space created by the needle socket 2 and the piston 8 in the syringe body 1, and then the syringe of the present invention is inserted into the patient's application part, and air is injected into the syringe body by using an air compressor.
  • a pushing force is generated in the closed air chamber to push the piston 8 toward the needle socket 2 of the syringe body 1, so that the piston 8 injects the medicine in the syringe body 1 from the injection needle into the patient's application part, and carry out
  • the plunger 4, the nozzle 5, and the delivery pipe 6 can also be pushed into the accommodation groove 84 of the piston 8 by the piston push rod 88 and fixed by rotation, or compressed by manual air
  • a structure 89 is used instead, and a manual air compression structure 89 is provided with a vent valve 891 at the connection point with the delivery pipe 6, and a rear end of the manual air compression structure 89 is provided with a one-way intake valve 892 and a one-way exhaust valve 893.
  • the plunger 4 of the present invention may also be made of non-elastic material, and a perforation 41 is provided on the plunger 4, and a quick joint 54 is used instead of the nozzle 5, and the conveying pipe 6 is provided with A joint base 61 is connected to the quick joint 54. Furthermore, the quick joint 54 can also be replaced by a general joint 55, and the conveying pipe 6 is connected to the rear end of the general joint 55.
  • the outer edge of the front end of the syringe body 1 may also be provided with a flexible connection end 14, the other end of the connection end 14 is connected to a barrel cap 15, and the barrel cap 15 is recessed.
  • the portion 151 may also be replaced by a convex plugging portion 152, and the plugging portion 152 may be plugged in the needle cover housing 11 at the front end of the syringe body 1.
  • the outer periphery of the needle socket 2 where the injection needle is inserted is provided with an outer ring body 24, and the outer ring body 24 is formed with a thread 25 for the injection needle to screw in.
  • the syringe body An elastic element 16 can also be wound around the rear end of the holding portion 111 of 1, and the elastic element 16 abuts against the outer edge of the outer ring body 24.
  • the elastic element 16 faces The middle spring is directed to the original outer ring body 24 position, so that the syringe socket 2 is blocked by the elastic element 24 and cannot return to the original position.
  • the needle cover 7 can be replaced.
  • the front end of the sleeve is inserted into the middle of the elastic element 16 to seal the injection needle in the syringe body 1.
  • the syringe 3 of the present invention can be replaced by a piston 8, and a piston 17 is provided between the piston 8 and the plunger 4.
  • One end of the hose 17 is connected to the piston 3 and penetrates it.
  • Piston 3 and hose The other end of 17 is drawn through the plunger 4 and connected to a needle 171, and an outer cover 172 made of a compressible material is sheathed on the outer edge of the needle 171.
  • the needle 171 connected to the tube 17 penetrates the soft stopper 101 of the test tube 10 and punctures the outer cover 172 of the outer edge of the needle 171.
  • the test tube 10 is in a negative pressure state.
  • the blood is drawn directly from the injection needle into the test tube 10 through the hose 17. Therefore, when blood samples must be taken repeatedly, there is no need to remove the injection needle from the patient, and only the test tube 10 needs to be replaced.
  • the nozzle 5 is inserted into the plunger 4, and the nozzle 5 injects air into the syringe body 1 so that the air pushes the piston 8 to destroy the connection between the needle socket 2 and the syringe body 1, so that the needle socket 2 is stored in the syringe body 1 together with the injection needle.
  • the syringe provided by the present invention has the following advantages:
  • the syringe of the present invention uses compressed air of an air compressor to cause a balloon in the syringe to push the medicine or blood in the syringe body, so that the medicine or blood is injected into a test tube or the patient's body or stores blood through the injection needle Complete the injection in a test tube.
  • the syringe of the present invention uses an air compressor to suck the air in the balloon from the nozzle through a delivery tube, so that a vacuum suction force is formed in the syringe, and blood or medicine is sucked from the patient's extraction unit or the medicine bottle through the needle socket.
  • the syringe body is used for extraction.
  • the syringe of the present invention utilizes a display and an alarm connected to the air compressor. When the injection and extraction are completed or the injection outlet is blocked or leaking, the alarm will sound to notify the medical staff.
  • the syringe injector of the present invention uses the controller, encoder and flow meter connected to the air compressor, so that the syringe injector of the present invention can adjust the injection or extraction rate, and can also be used for timing and quantitative control.
  • the syringe of the present invention utilizes a pressure sensor connected to the air compressor, so that when the air compressor injects compressed air into the balloon, it can detect whether the balloon has a hole or air leak from the pressure change in the balloon. This phenomenon allows the air compressor to know whether the injection site is clogged or leaking when the pressure in the balloon is changed during extraction or air supply.
  • the syringe of the present invention uses a power switch provided in the air compressor to turn off the power and interrupts the drawing or injection operation.
  • the syringe of the present invention uses the input / output device provided on the air compressor to connect with a computer, a PDA or a mobile phone.
  • the elastic fixing structure in the resisting part is released by pressing the resisting part of the needle socket, so that the needle socket and the injection needle are accommodated in the body of the syringe, so as to prevent the used injection needle from puncturing the medical personnel. Or the patient's skin.
  • the syringe of the present invention utilizes the tenon of the needle cover to be engaged with the holding portion of the needle cover sleeve of the syringe body to fix the needle cover on the needle cover sleeve to prevent the injection needle from penetrating the injection.
  • the cylinder body is dangerous.
  • the syringe of the present invention is a pressure sensor installed on an air compressor, and when the syringe of the present invention is pressed on the skin of a patient, it can be changed according to the signal read by the pressure sensor. Guide the medical staff to find the arterial location to guide the medical staff to draw the arterial blood.
  • the balloon is replaced by a piston, and a hose is provided between the piston and the plunger, and a needle is connected to one end of the hose so that the blood sample can be repeatedly taken.

Description

针筒注射器 技术领域
本发明涉及一种针筒注射器， 特别是一种可由压缩空气或真空吸力作抽取 血液或注射药剂动作的针筒注射器。 背景技术
已有的针筒注射器， 其主要结构特征为： 针筒上端有一针座， 此针座上连接 有一针头， 其中， 针筒内含有一活塞推杆， 借由拉出活塞推杆使针筒内形成负压， 而 将血液或药剂吸入针筒内， 然后将活塞推杆推入筒内， 使血液或药剂自针头流出。 然 而由于此种已知针筒注射器需用人力拉取或是推挤活塞推杆， 使其针筒内产生真空吸 力或推挤力， 进而执行注射或抽取的工作。 这种以人力拉取或是推挤活塞推杆的方式 容易在注射或抽取的过程中， 因拉取或是推挤活塞推杆的力量不平均， 而产生时快时 慢的情形发生， 导致患者的施打部位产生酸麻等不适或疼痛的状况。 另外， 当医护人 员的心情不稳定时， 有时会因为没有注意到注射的时间而造成在病患的施打部位瘀血 久久无法散去，且在执行抽血的工作时， 易造成所采取的样本过多或是过少的问题； 再 者， 由于此种已有针筒注射器的注射针头是装设于针筒上， 因此当已有的针筒注射器 使用过后， 医护人员必须小心的处理针筒注射器， 以避免被注射针头划破皮肤而受到 病菌的感染。
由此可见， 上述已有针筒注射器仍有诸多缺失,实非一完善的设计， 而极待 加以改良。 发明内容
本发明的目的是提供一由空气压缩机使针筒注射器内的气球推挤药剂或血 液， 以完成注射动作的针筒注射器。
本发明的次一目的是提供一种利用空气压缩机吸取针筒注射器内的气球中 的空气， 造成针筒注射器内形成真空吸力， 而进行抽取动作的针筒注射器。 '
本发明的另一目的是提供一种借由压迫针头插座的抵挡部使抵挡部内的弹 性固定结构松脱， 而令注射针头收容于注射筒本体内的针筒注射器。
为达到上述发明目的， 本发明提供了一种针筒注射器， 是由空气压缩机抽 取针筒注射器内的空气， 使针筒注射器内产生真空吸力以抽取药剂或血液， 或利用空 气压缩机将空气灌入针筒注射器中， 使针筒注射器内产生推挤压力而将针筒注射器内 的药剂注入患者体内。
所述的针筒注射器， 其中针筒注射器包括一注射筒本体、 一针头插座、 一气 球、一柱塞、 一喷嘴及一输送管， 注射筒本体的一端具有一针头盖套座， 另一端则形 成一开口。
所述的针筒注射器， 其中空气压缩机上连接有显示器及警报器， 当注射及抽 取完成或注射出口处阻塞或漏液时， 警报器会发出声响通知医护人员。
所述的针筒注射器， 其中空气压缩机上亦连接有控制器、 编码器及流量计， 使本发明的针筒注射器可调整注射或抽取的速率， 亦可作定时及定量的控制。
所述的针筒注射器， 其中空气压缩机亦可以一手动空气压缩结构代替， 手动 空气压縮结构与输送管连接处设有一泄气阀， 且手动空气压缩结构的后端则设有一单 向进气阀及一单向排气阀。
所述的针筒注射器， 其中空气压缩机上装有一压力感测器， 使空气压缩机在 将压缩空气注入气球内时， 由气球内的压力变化测知气球是否有破洞或漏气的现象， '使空气压缩机在进行抽取或送气时可由气球内压力的改变而得知注射处是否阻塞或漏 液， 且压力侦测器为可使针筒注射器压在患者的皮肤上时， 读到动脉的脉动， 以引导 医护人员抽取动脉血。
所述的针筒注射器， 其中空气压缩机上设有一电源开关， 可由电源关闭， 使 抽取或注射的动作中断。
所述的针筒注射器， 其中空气压缩机上设有一输出 /入装置可与电脑、 PDA 或行动电话作连接。
所述的针筒注射器， 其中空气压缩机亦可用液压泵浦代替。
所述的针筒注射器， 其中空气压缩机上亦可用输送管连接一充气薄套， 充气 薄套可代替以橡胶系带系缚在注射部上方部位的方法。
所述的针筒注射器， 其中针头盖套座的内缘设有一内凹的卡持部。
所述的针筒注射器， 针头插座是装设在注射筒本体内部， 且针头插座前端为 可供注射针头插设的插设部， 针头插座的后端有一抵挡部， 抵挡部内设有一弹性固定 结构的容置空间， 由压迫抵挡部使弹性固定结构松脱， 而令针头插座连同注射针头收 容在注射筒本体内。
所述的针筒注射器， 其中气球为一长条状， 且气球是以具有延展性的材质所 制成， 而气球是套设在注射筒本体后端的外缘， 且气球未套设在注射筒本体外缘的部 分为容置在注射筒本体内。
所述的针筒注射器， 其中柱塞是一具弹性的材质所形成的园柱体， 且柱塞是 塞设在注射筒本体后端的开口上。
所述的针筒注射器， 其中喷嘴的前端形成有一插设部， 可供喷嘴穿透柱塞并 透入气球内， 且插设部上设有数个气孔， 而喷嘴的后端则有一套置部， 套置部上连接 有一输送管， 且输送管与喷嘴相接的另一端是装设在空气压縮机上。
所述的针筒注射器， 其中气球亦可用活塞代替， 且活塞外缘是与注射筒本体 的内侧管壁形成密合， 而使活塞与柱塞间产生一密闭气室。
所述的针筒注射器， 其中注射筒本体前端外缘亦可设有一具弹性的连接端， 连接端的另一端则连接在一筒盖上， 且筒盖内为凹设有一可套设在注射管本体前端针 筒盖套座外缘的容置部。
所述的针筒注射器， 其中气球可以一活塞代替， 且活塞与柱塞间设有一软管， 软管的一端与活塞连接并贯穿活塞， 而软管的另一端则穿透柱塞并连接一针头， 并在 针头的外缘套设一可压缩材质制成的外套罩。
所述的针筒注射器， 其中注射筒本体的卡持部后端亦可绕设一弹性元件， 以 便使针头插座收入注射筒本体内时， 使弹性元件可向中间弹向针头插座的位置。
所述的针筒注射器， 其中注射筒本体与针头插座的抵挡部间亦可加设一环状 的弹性元件， 利用弹性元件增加固定抵挡部所需的阻力。
所述的针筒注射器， 其中抵挡部内亦可不设具弹性固定结构的容置空间， 且 抵挡部是以具弹性材质所制成， 抵挡部的外侧缘则与注射筒本体的内侧筒壁相接， 而 气球则以一活塞代替， 并在活塞相对抵挡部方向的外缘设有环绕活塞的扣钩。
所述的针筒注射器， 其中抵挡部内亦可不设具弹性固定结构的容置空间， 而 在抵挡部的外缘套设一具弹性的弹力圈， 且注射筒本体与抵挡部间设有一个或一个以 上的抵持件， 另外注射筒本体内则设有一活塞， 活塞的一侧对应弹力圈的位置则延伸 有环绕在活塞外侧的凸块， 并在凸块间形成一挟持空间， 且凸块顶端的内缘凸设有一 园凸部。
所述的针筒注射器， 其中抵挡部内亦可不设具弹性固定结构的容置空间， 而 在抵挡部后端设有数个具倒钩的卡榫， 且注射筒本体内设有一 具弹性材质所制成的 活塞。
所述的针筒注射器， 其中抵挡部内亦可不设具弹性固定结构的容置空间， 而 在抵挡部后端设有数个环状凹槽， 且气球的外缘对应各环状凹槽的位置则设有数个园 形凸起。
所述的针筒注射器， 其中弹性固定结构是由二相错离的抵顶件相抵合， 其中 一抵顶件上延伸有一凸块， 且凸块为延伸在抵挡部外侧并顶持在注射筒本体的内侧壁 缘， 且二抵顶件是以粘胶相粘合。
所述的针筒注射器， 其中针头插座插设注射针头处的外缘亦可环设有一外环 体， 且外环体内形成有一可供注射针头螺入的螺纹。
所述的针筒注射器， 其中柱塞亦可用非弹性材质所制成， 且柱塞上开设一穿 孔， 并以一快速接头代替喷嘴， 而输送管上设有一接头座与快速接头相接。
所述的针筒注射器， 其中喷嘴后端的套置部亦可用一穿设部代替， 且穿设部 的外园向后端渐成一斜面， 斜面上设有数个卡扣凸块， 使穿设部插入输送管时， 各卡 扣凸块与输送管内侧壁面形成干涉而密合。
所述的针筒注射器， 其中气球可以一活塞代替， 活塞的后端开设有一固定槽， 固定槽开口处设有若干顶持凸块， 且固定槽为可供一活塞推杆推入并旋动固定。
所述的针筒注射器， 其中筒盖内凹设的容置部亦可用外凸的塞设部代替， 且 塞设部可塞设在注射筒本体前端的针头盖套座内。
所述的针筒注射器， 其中筒盖亦可无需连接在注射筒本体上。
所述的针筒注射器， 其中活塞亦可以气球代替， 且气球邻近前端处设有一环 绕在气球外缘的环状凸部。
所述的针筒注射器， 其中弹力圈亦可为非弹性材质所制成。
所述的针筒注射器， 其中活塞亦可为非弹性材质制成， 且活塞上亦可在相对 在卡榫的位置与数量处开设有数个导孔， 并在各导孔底端均设有一较导孔宽的容置槽， 且容置槽内亦可开设一管路连接至针头插座供药剂通过的通道。
所述的针筒注射器， 其中抵挡部亦可用具弹性材质所制成， 而活塞相对在抵挡 部方向的一侧则设有若干具倒钩的卡榫。
所述的针筒注射器， 其中弹性固定结构亦可由一个或一个以上的 T型挡块、 数个弹簧所组成， 其中弹簧的一端设有一凸块， 凸块为延伸在抵挡部外侧并顶持在注 射筒本体的内侧壁缘， 且弹簧另一端则抵持在 T型挡块的延伸长边， 而容置空间的侧 边设有一可供 τ型挡块的延伸长边置入的凹槽。
所述的针筒注射器， 其中弹性固定结构亦可用数个弹簧抵持在抵挡部的容置 空间内， 使抵挡部两侧抵顶在注射筒本体内侧壁缘， 且容置空间在各弹簧的一侧分别 设有一顶块。 所述的针筒注射器， 其中弹性固定结构亦可由数个挟持组件及一如橡胶等弹 性材质所制成的弹力圈所组成， 且弹力圈的外缘是抵顶在注射筒本体的内侧壁缘， 而 弹力圈的内侧为分别抵持于各挟持组件。
所述的针筒注射器， 其中快速接头亦可用一般接头代替， 且输送管则连接在 一般接头的后端。
所述的针筒注射器， 其中抵挡部亦可用非弹性物质制成， 且抵挡部在相对于 卡榫的位置与数量处开设有数个导孔， 并在各导孔底端均设有一较导孔宽的容置槽， 且容置槽内亦可开设一管路连接至针头插座供药剂通过的通道。
所述的针筒注射器， 其中挟持组件是由一具弹性材质弯折成的三角弹片， 三 角弹片的开口处的两端为分别弯折成一园型的挟持部， 各挟持部内均套设有一扳持件， 且各扳持件为延伸至三角弹片外侧边， 而三角弹片的底部形成一弧形的弹性结构。 附图说明
图 1为本发明针筒注射器的立体外观图；
图 2为本发明针筒注射器的立体分解图；
图 3为本发明针筒注射器的侧面动作示意图 (一)；
图 4为本发明针筒注射器的侧面动作示意图 (二)；
图 5为本发明针筒注射器的侧面动作示意图 (三)；
图 6为本发明针筒注射器的侧面动作示意图 (四)；
图 7为本发明针头插座的侧面剖视图；
图 8为本发明针头插座的侧面动作示意图；
图 9为本发明针筒注射器第一实施例的侧面剖视图；
图 10为本发明弹性固定结构的侧面剖视图；
图 11为本发明弹性固定结构的侧面动作示意图；
图 12为本发明弹性固定结构第一实施例的侧面剖视图；
图 13为本发明弹性固定结构第一实施例的侧面动作示意
图；
图 14为本发明弹性固定结构第二实施例的侧面剖视图；
图 15为本发明弹性固定结构第二实施例的侧面动作示意图 ；
图 16为本发明针头插座第一实施例的侧面剖视图；
图 17为本发明针头插座第一实施例的侧面动作示意图 (一)； 图 18为本发明针头插座第一实施例的侧面动作示意图 (二） ；
图 19为本发明针头插座第二实施例的侧面剖视图；
图 20为本发明针头插座第二实施例的侧面动作示意图 (一） ； 图 21为本发明针头插座第三实施例的侧面剖视图；
图 22为本发明针头插座第三实施例的侧面动作示意图 (一)；
图 23为本发明针头插座第三实施例的侧面动作示意图 (二） ； 图 24为本发明针头插座第四实施例的侧面剖视图；
图 25为本发明针头插座第五实施例的侧面剖视图；
图 26为本发明针头插座第六实施例的侧面剖视图；
图 27为本发明针头插座第七实施例的侧面剖视图；
图 28为本发明针头插座第七实施例的侧面动作示意图 (一） ； 图 29为本发明针头插座第七实施例的侧面动作示意图 (二） ； 图 30为本发明针头插座第八实施例的侧面剖视图；
图 31为本发明空气压缩机的配置图；
图 32为本发明喷嘴另一实施例的侧面剖视图；
图 33为本发明针筒注射器第二实施例的侧面动作示意图 (一)； 图 34为本发明针筒注射器第二实施例的侧面动作示意图 (二)； 图 35为本发明针筒注射器第三实施例的侧面剖视图；
图 36为本发明针筒注射器第三实施例中活塞与话塞推杆的立体分解图; 图 37为本发明针筒注射器第四实施例的立体外观图；
图 38为本发明针筒注射器第五实施例的立体分解图；
图 39为本发明针筒注射器第六实施例的立体分解图；
图 40为本发明注射筒本体第一实施例的立体外观图；
图 41为本发明注射筒本体第二实施例的立体外观图；
图 42为本发明注射筒本体第三实施例的立体外观图；
图 43为本发明针头插座第九实施例的侧面剖视图；
图 44为本发明针头插座第十实施例的侧面剖视图；
图 45为本发明针筒注射器第七实施例的侧面动作示意图 （一） ； 图 46为本发明针筒注射器第七实施例的侧面动作示意图 (二） ； 图 47为本发明针筒注射器第七实施例的侧面动作示意图 (三） 。 具体实施方式
本发明的针筒注射器是由空气压缩机抽取针筒注射器内的空气或将空气注入针筒 注射器内， 使针筒注射器内产生推挤力或真空吸力以完成抽取或注射的动作。
请参阅图 1及图 2， 本发明所提供的针筒注射器， 主要包括有：
一注射筒本体 1， 注射筒本体 1的一端具有一针头盖套座 11， 针头盖套座 11的内 缘设有一卡持部 111， 且注射筒本体 1另一端则形成一开口 12;
一针头插座 2， 针头插座 2是装设在注射筒本体 1内部， 且针头插座 2前端为可 供注射针头插设， 针头插座 2的后端有一抵挡部 21， 抵挡部 21内设有一弹性固定结构 23的容置空间 22， 而弹性固定结构 23是由二相错离的抵顶件 231相抵合， 其中一抵 顶件 231上延伸有一凸块 9， 且凸块 9为延伸在抵挡部 21外侧并顶持在注射筒本体 1 的内侧壁缘， 且二抵顶件 231是以粘胶 232相粘合；
一气球 3， 气球 3是以有延展性的材质所制成的长条状气球 3;
一柱塞 4， 柱塞 4为一具弹性的材质所形成的园柱体；
一喷嘴 5， 喷嘴 5的前端形成有一插设部 51， 且插设部 51上设有数个气孔 511， 喷嘴 5的后端则具有一套置部 52; 以及
一输送管 6， 输送管 6—端套设在喷嘴 5的套置部 52内， 另一端则连接有一空气 压缩机；
气球 3是套设在注射筒本体 1后端的外缘， 并以一柱塞 4塞设在注射筒本体 1后 端的开口 12， 使气球 3除套设在注射筒本体 1外缘的部分外， 均以柱塞 4推入注射筒 本体 1内。
请参阅图 3、 4、 5、 6、 7、 8、 及图 9 ， 本发明的针筒注射器使用时， 是先将注 射针头连同针头盖 7插设在针头插座 2上， 然后再将针头盖 7取下， 而喷嘴 5则以前 端的插设部 51穿透柱塞 4并透入气球 3内， 再由空气压缩机将空气自输送管 6经由喷 嘴 5的气孔 511注入注射筒本体 1内的气球 3中， 使注射筒本体 1内的气球 3涨大， 且 气球 3胀大后与注射筒本体 1内侧壁面呈密合状态， 然后将插设在针头插座 2上的注 射针头插入药剂瓶或患者的血管内， 并利用空气压缩机以输送管 6将气球 3内的空气 自喷嘴 5的气孔 511经由输送管 6吸出， 使注射筒本体 1内产生真空吸力， 而将药剂或 血液吸入注射筒本体 1与气球 3所形成的空间内， 而完成抽取药剂或血液的动作， 接 着将注射针头插入患者的施打部或存放血液的试管内， 由空气压缩机将空气自输送管 6经由喷嘴 5注入注射筒本体 1内的气球 3中， 令气球 3涨大而推挤气球 3与注射筒 本体 1所形成的空间内的药剂及血液， 使药剂自针头插座 2经由注射针头注入患者体 内或存放血液的试管中， 此时， 空气压缩机持续将压缩空气注入气球 3 内， 使气球 3 持续涨大而压迫针头插座 2的抵挡部 21， 抵挡部 21内二相错离的抵顶件 231受外力压 迫后， 二抵顶件 231穿破粘胶 232并互相形成错位， 其中设有凸块 9的抵顶件 231上的 凸块 9则缩入抵挡部 21的容置空间 22内， 使针头插座 2与注射器本体内侧壁面的干 涉力消失， 而令针头插座 2连同注射针头收入注射器本体内， 然后以一针头盖 7外缘 的环凸块 71扣抵在注射筒本体 1的针头盖套座 11内的卡持部 111内， 而使针头盖 7固 定在注射筒本体 1上， 然后将喷嘴 5自柱塞 4上拔离， 此时， 柱塞 4上因喷嘴 5插入 所形成的孔洞， 由柱塞 4本身材质的弹力而密合； 注射筒本体 1与针头插座 2的抵挡 部 21间亦可加设一环状的弹性元件 13， 利用弹性元件 13增加固定抵挡部 21所需的阻 力， 针头盖套座 11的卡持部 111亦可以螺紋方式设计， 使针头盖 7以螺合方式与注射 筒本体 1结合。
请参阅图 10及图 11， 弹性固定结构 23亦可由一个或一个以上的 T型挡块 233、 数个弹簧 234所组成，其中弹簧 234的一端设有一凸块 9,凸块 9为延伸在抵挡部 21 外 侧并顶持在注射筒本体 1的内侧壁缘， 且弹簧 234另一端则抵持在 T型挡块 233的延 伸长边， 而容置空间 22的侧边设有一可供 T型挡块 233的延伸长边置入的凹槽 221， 当弹性固定结构 23受气球 3推挤时， T型挡块 233的延伸长边会被推入凹槽 221内， 使得弹簧 234带动凸块 9缩入抵挡部 21的容置空间 22内， 而使凸块 9与注射器本体 内侧壁面的干涉力消失， 令针头插座 2可收入注射器本体内。
请参阅图 12及图 13， 弹性固定结构 23亦可以数个弹簧 234抵持在抵挡部 21的 容置空间 22内， 使抵挡部 21两侧抵顶在注射筒本体 1内侧壁缘， 且容置空间 22在各 弹簧 234的一侧分别设有一顶块 222，当弹性固定结构 23受气球 3推挤时，各顶块 222 分别将各弹簧 234顶开， 使弹簧 234与注射器本体内侧壁面的干涉力消失， 令针头插 座 2可收入注射器本体内。
请参阅图 14及图 15， 弹性固定结构 23亦可由数个挟持组件 235及如橡胶等弹性 材质所形成的弹力圈 236所组成， 挟持组件 235是由一具弹性材质弯折成的三角弹片 2351, 三角弹片 2351的开口 12处的两端为分别弯折成一园型的挟持部 2352， 各挟持 部 2352内均套设有一扳持件 2353, 且各扳持件 2353为延伸至三角弹片 2351侧边， 而三角弹片 2351的底部为形成一弧形的弹性结构， 另外， 弹力圈 236的外缘是抵顶在 注射筒本体 1的内侧壁缘， 而弹力圈 236的内侧为分别抵持在各挟持组件 235的挟持 部 2352上， 当弹性固定结构 23受气球 3推挤时， 扳持件 2353受力而将三角弹片 2351 的二挟持部 2352打开， 使具弹力的弹力圈 236收入三角弹片 2351的开口内， 而使弹 力圈 236与注射器本体内侧壁面的干涉力消失。
请参阅图 16、 17、 18、 19及图 20， 针头插座 2的抵挡部 21内亦可不设具弹性固 定结构 23的容置空间 22， 而在抵挡部 21的外缘套设如一橡胶等弹性材质所形成的弹 力圈 211， 且注射筒本体 1与抵挡部 21间设有一个或一个以上的抵持件 212， 另夕卜注射 筒本体 1内则设有一活塞 8， 活塞 8的一侧对应弹力圈 211的位置则延伸有环绕在活 塞 8外侧的凸块 9， 并在凸块 9间形成一挟持空间 82， 且凸块 9顶端的内缘凸设有一 园凸部 81， 当活塞 8受空气推挤时， 活塞 8的凸块 9将弹力圈 2 1 1推离抵挡部 21的外 缘， 使抵挡部 21容置在挟持空间 82内， 此时， 环绕在凸块 9上的园凸部 81钩设在抵 挡部 21的前端， 而使针头插座 2的抵挡部 21被凸块 9包复在挟持空间 82内， 然后利 用负压将活塞 8向后拉， 连带使针头插座 2及注射针头被拉入注射筒本体 1内； 活塞 8亦可以气球 3代替， 且气球 3邻近前端处设有一环绕在气球 3外缘的环状凸部 31, 当气球 3涨大而压迫针头插座 2的抵挡部 21时， 环状凸部 31则将弹力圈 211推离抵挡 部 21的外缘， 使 ί氐挡部 21与注射筒本体 1间由弹力圈 211所产生的阻力消失， 而使针 头插座 2及注射针头可收入在注射筒本体 1内， 另外， 弹力圈 211亦可为非弹性材质 所制成。
请参阅图 21、 22、 23、 24、 25、 26， 抵挡部 21后端亦可设有数个具倒钩 2131的 卡榫 213， 且注射筒本体 1内设有一具弹性材质所制成的活塞 8， 当活塞 8受空气向前 推挤时，抵挡部 21的卡榫 213穿设在活塞 8内或穿透活塞 8,此时，活塞 8受卡榫 213 穿破的孔洞则由活塞 8本身的弹力而恢复并包围于卡榫 213外缘， 并由卡榫 213的倒 钩 2131使活塞 8与抵挡部 21扣在一起， 然后利用负压将活塞 8向后拉出， 并连带的 将针头插座 2及注射针头拉入注射筒本体 1内， 另外， 抵挡部 21亦可用具弹性材质所 制成， 而活塞 8相对在抵挡部 21方向的一侧则设有若干具倒钩 831的卡榫 83; 其中， 活塞 8亦可为非弹性材质制成， 且活塞 8上在相对于卡榫 213的数量与位置处开设有 数个导孔 84， 并在各导孔 84底端均设有一较导孔 84宽的容置槽 85， 当活塞 8受空气 推挤时， 抵挡部 21上所设的卡榫 213受力而自活塞 8的导孔 84迫入容置槽 85内， 且 各卡榫 213上的倒钩 2131则抵持在容置槽 85的壁面， 使活塞 8与抵挡部 21结合， 然 后利用负压将活塞 8连同针头插座 2与注射针头一起拉入注射筒本体 1内， 又， 当卡 榫 83设在活塞 8上时， 抵挡部 21亦可用非弹性材质制成， 且抵挡部 21在相对于活塞 8上卡榫 83的位置与数量处亦可开设数个导孔 214， 并在各导孔 214底端均设有一较 导孔 214宽的容置槽 215， 再者， 前述的活塞 8或抵挡部 21上的容置槽 85、 215内亦 可幵设一管路连接至针头插座 2供药剂通过的通道。 请参阅图 27， 28及图 29， 抵挡部 21亦可用具弹性材质所制成， 抵挡部 21的外 侧缘则与注射筒本体 1的内侧筒壁相接， 而气球 3则以一活塞 8代替， 并在活塞 8相 对抵挡部 21方向的外缘设有环绕活塞 8的扣钩 86， 当活塞 8受空气推挤时， 由于抵挡 部 21是用弹性材质制成， 因此活塞 8的扣钩 86可自抵挡部 21与注射筒本体 1筒壁的 接触面将抵挡部 21向注射筒本体 1内挤压， 而使活塞 8的扣钩 86穿过 挡部 21外缘 并钩设在抵挡部 21上， 然后利用负压将活塞 8向后拉， 此时， 由于活塞 8的扣钩 86 为钩设在抵挡部 21上， 因此活塞 8带动针头插座 2连同注射针头拉入注射筒本体 1内。
请参阅图 30， 针头插座 2的抵挡部 21内亦可不设具弹性固定结构 23的容置空间 22， 而在抵挡部 21后端设有数个环状凹槽 216， 且气球 3的外缘对应各环状凹槽 216 的位置则设有数个园形凸起 32。
请参阅图 31， 空气压缩机上连接有显示器及警报器， 当注射及抽取完成或注射出 口处阻塞或漏液时， 警报器会发出声响通知医护人员， 且空气压缩机上亦连接有控制 器、 编码器及流量计， 使本发明的针筒注射器可调整注射或抽取的速率， 亦可作定时 及定量的控制， 另外， 空气压缩机上装设有一压力感测器， 在将压缩空气注入气球 3 内时， 由气球 3内的压力变化测知气球 3是否有破洞或漏气的现象， 使空气压缩机在 进行抽取或送气时可由气球 3 内压力的改变而得知注射处是否阻塞或漏液， 且当特殊 情况发生时 (如： 患者昏迷或针筒注射器内的气球 3破裂…等） ， 可直接将空气压缩 机的电源关闭， 使抽取或注射的动作中断， 且在动脉抽血时， 先令气球 3涨大后与注 射筒本体 1的内侧壁面呈密合状态， 再将注射针头连同针头盖 7装设在针头插座 2上， 然后将针头盖 7压在患者的皮肤上， 而当针头盖 7所压的部位为动脉时， 压力感测器 所读到的变化会较压到一般血管有所不同， 此时， 即可将针头盖 7取下并抽取动脉血， 且在注射针头插入动脉的过程中， 压力感测器依旧可以读到讯号， 以引导医护人员作 抽取动脉血的动作， 再者， 空气压缩机上设有一输出 /入装置可与电脑、 PDA或行动 电话作连接， 又， 空气压缩机亦可以液压泵浦代替， 另外， 空气压缩机上亦可用输送 管 6连接一充气薄套， 将空气薄套套设在患者的注射部上方， 并以空气压缩机将压缩 空气注入充气薄套内， 使充气薄套涨大， 以代替已往注射时以橡胶带系缚注射部上方 部位的方法。
请参阅图 32， 喷嘴 5后端的套置部 52亦可用一穿设部 53代替， 且穿设部 53的 外缘向后端渐成一斜面， 并在斜面上设有数个卡扣凸块 531， 使穿设部 53插入输送管 6时， 各卡扣凸块 531与输送管 6内侧壁面形成干涉而密合。
请参阅图 33、 34、 35、 36及图 37， 本发明针筒注射器的气球 3亦可用一活塞 8代 替， 且活塞 8外缘是与注射筒本体 1的内侧管壁形成密合， 而使活塞 8与柱塞 4间产 生一密闭气室， 活塞 8的后端幵设有一固定槽 87， 固定槽 87开口处设有若干顶持凸 块 871， 且活塞 8自注射筒本体 1后端的开口装设在注射筒本体 1内， 当本发明针筒注 射器使用时， 先将注射针头插入药剂瓶内， 并由空气压缩机将密闭气室内的空气抽出， 使密闭气室内形成一负压而将活塞 8往后拉， 造成活塞 8与注射筒本体 1的针头插座 2 间产生真空吸力， 而将药剂瓶内的药剂自注射针头吸入注射筒本体 1中针头插座 2与 活塞 8所产生的空间内， 然后将本发明的针筒注射器插入患者的施打部， 并利用空气 压缩机将空气注入注射筒本体 1内， 令密闭气室产生一推挤力将活塞 8向注射筒本体 1 的针头插座 2方向推， 使活塞 8将注射筒本体 1内的药剂由注射针头处注入患者的施 打部， 而完成注射的动作， 且当停电或空气压缩机故障时， 柱塞 4、 喷嘴 5及输送管 6 亦可以活塞推杆 88推入活塞 8的容置槽 84内并旋动固定， 或以手动空气压缩结构 89 代替， 而手动空气压缩结构 89与输送管 6连接处设有一泄气阀 891， 且手动空气压缩 结构 89的后端设有一单向进气阀 892及一单向排气阀 893。
请参阅图 38及图 39， 本发明的柱塞 4亦可为非弹性材质所制成， 且柱塞 4上开 设一穿孔 41， 并以一快速接头 54代替喷嘴 5， 且输送管 6上设有一接头座 61与快速 接头 54相接， 再者， 快速接头 54亦可用一般接头 55代替， 而输送管 6则连接在一般 接头 55的后端。
请参阅图 40、 41及图 42注射筒本体 1前端外缘亦可设有一具弹性的连接端 14， 连接端 14的另一端则连接在一筒盖 15上， 且筒盖 15内为凹设有一可套设在注射筒本 体前端针筒盖 15套座外缘的容置部 151; 再者， 筒盖 15亦可无需连接在注射筒本体 1 上； 又筒盖 15内凹设的容置部 151亦可以外凸的塞设部 152代替， 且塞设部 152为可 塞设在注射筒本体 1前端的针头盖套座 11内。
请参阅图 44 及图 45， 针头插座 2插设注射针头处的外缘环设有一外环体 24, 且外环体 24内形成有一可供注射针头螺入的螺紋 25，另外，注射筒本体 1的卡持部 111 后端亦可绕设一弹性元件 16， 且弹性元件 16为抵顶在外环体 24的外缘， 当针头插座 2收入注射筒本体 1内时， 弹性元件 16即向中间弹向原本外环体 24的位置， 使针筒 插座 2被弹性元件 24挡住而无法回到原位， 且当弹性元件 16弹向原本外环体 24的位 置后， 即可将针头盖 7的前端套入弹性元件 16中间， 而将注射针头封在注射筒本体 1 内 。
请参阅图 45、 46及图 47， 本发明的针筒注射器的气球 3可用一活塞 8代替， 且 活塞 8与柱塞 4间设有一软管 17， 软管 17的一端与活塞 3连接并贯穿活塞 3， 而软管 17的另一端则抽透柱塞 4并连接一针头 171， 并在针头 171的外缘套设一可压缩材质制 成的外套罩 172， 当须采取血液样本时， 仅须将试管 10推入注射筒本体 1之内， 使软 管 17连接的针头 171穿透试管 10的软质瓶塞 101， 并刺破针头 171外缘的外套罩 172， 此时， 由于试管 10内为负压的状态， 而使血液直接自注射针头经由软管 17抽入试管 10 内， 因此当必须重复采取血液样本时， 无须将注射针头自患者身上拔出， 而仅须更 换试管 10即可， 而当血液样本采取完后， 将喷嘴 5插入柱塞 4内， 由喷嘴 5将空气注 入注射筒本体 1内， 使空气推挤活塞 8去破坏针头插座 2与注射筒本体 1间的连结关 系， 而令针头插座 2连同注射针头收容在注射筒本体 1内。
本发明所提供的针筒注射器， 与前述引证案及其他已有技术相互比较时， 具有下 列的优点：
一、本发明的针筒注射器由空气压缩机的压缩空气使针筒注射器内的气球推挤注 射筒本体中的药剂或血液， 使药剂或血液经由注射针头注入试管中或患者体内或存放 血液的试管中而完成注射动作。
二、 本发明的针筒注射器利用空气压缩机将气球内的空气自喷嘴经由输送管吸 出， 使针筒注射器内形成真空吸力， 使血液或药剂自患者的抽取部或药剂瓶内经由针 头插座吸入针筒本体内以进行抽取动作。
三、 本发明的针筒注射器利用空气压缩机所连接的显示器及警报器， 当注射及抽 取完成或注射出口处阻塞或漏液时， 警报器会发出声响通知医护人员。
四、 本发明的针筒注射器利用空气压缩机所连接的控制器、 编码器及流量计， 使 本发明的针筒注射器可调整注射或抽取的速率， 亦可作定时及定量的控制。
五、 本发明的针筒注射器利用空气压縮机所连接的压力感测器， 使空气压缩机在 将压缩空气注入气球内时， 由气球内的压力变化测知气球是否有破洞或漏气的现象， 使空气压缩机在进行抽取或送气时可由气球内压力的改变而得知注射处是否阻塞或漏 液。
六、 本发明的针筒注射器利用空气压缩机所设的电源开关， 将电源关闭， 使抽取 或注射的动作中断。
七、 本发明的针筒注射器利用空气压缩机上所设的输出 /入装置与电脑、 PDA或 行动电话作连接。
八、 本发明的针筒注射器由压迫针头插座的抵挡部使抵挡部内的弹性固定结构松 脱， 而令针头插座连同注射针头收容在注射筒本体内， 以避免使用过的注射针头划破 医护人员或患者的皮肤而产生成染。 九、 本发明的针筒注射器利用针头盖的卡榫可与注射筒本体的针头盖套座的卡持 部相卡扣而使针头盖固定在针头盖套座上， 以防止注射针头穿出注射筒本体而产生危 险。
十、 本发明的针筒注射器在使用完毕后， 借由破坏针筒插座与注射筒本体间的连 接关系， 使本发明的针筒注射器无法被重复使用。
十一、 本发明的针筒注射器由装设在空气压缩机上的压力感测器， 而使本发明的 针筒注射器压在患者皮肤上时， 可依压力感测器所读取的讯号变化而引导医护人员找 到动脉位置， 以引导医护人员抽取动脉血。
十二、 本发明的针筒注射器将气球以一活塞代替， 并在活塞与柱塞间设一软管， 并在软管一端连接一针头， 使釆取血液样本时可重复釆取。

Claims

权 利 要 求
1. 一种针筒注射器， 其特征在于， 针筒注射器是由空气压缩机抽取针筒注射 器内的空气， 使针筒注射器内产生真空吸力以抽取药剂或血液， 或利用空气压缩机将 空气灌入针筒注射器中， 使针筒注射器内产生推挤压力而将针筒注射器内的药剂注入 患者体内。
2. 她利要求 1戶纖 ¾ ^器，期繊于， mmm^m-mm^ -^■ , ~ 球、一纏、一輔及 騰， ¾I 本体的一端具有"^头盖套座， 另 一端则形成^ τ口。
3. 如权利要求 1所述的针筒注射器， 其特征在于， 其中空气压缩机上连接有显 示器及警报器， 当注射及抽取完成或注射出口处阻塞或漏液时， 警报器会发出声响通 知医护人员。
4. 如权利要求 1所述的针筒注射器， 其特征在于， 其中空气压缩机上亦连接 有控制器、 编码器及流量计， 使本发明的针筒注射器可调整注射或抽取的速率， 亦可 作定时及定量的控制。
5. 如权利要求 1所述的针筒注射器， 其特征在于， 其中空气压缩机亦可以一 手动空气压缩结构代替， 手动空气压缩结构与输送管连接处设有一泄气阀， 且手动空 气压缩结构的后端则设有一单向进气阀及一单向排气阀。
6. 如权利要求 1所述的针筒注射器， 其特征在于， 其中空气压缩机上装有一 压力感测器， 使空气压缩机在将压缩空气注入气球内时， 由气球内的压力变化测知气 球是否有破洞或漏气的现象， 使空气压缩机在进行抽取或送气时可由气球内压力的改 变而得知注射处是否阻塞或漏液， 且压力侦测器为可使针筒注射器压在患者的皮肤上 时， 读到动脉的脉动， 以引导医护人员抽取动脉血。
7. 如权利要求 1所述的针筒注射器， 其特征在于， 其中空气压缩机上设有一 电源开关， 可由电源关闭， 使抽取或注射的动作中断。
8. 如权利要求 1所述的针筒注射器， 其特征在于， 其中空气压缩机上设有一输 出 I入装置可与电脑、 PDA或行动电话作连接。
9. 如权利要求 1所述的针筒注射器， 其特征在于， 其中空气压缩机亦可用液压 泵浦代替。
10. 如权利要求 1所述的针筒注射器， 其特征在于， 其中空气压缩机上亦可用输 送管连接一充气薄套， 充气薄套可代替以橡胶系带系缚在注射部上方部位的方法。
11. 如权利要求 2所述的针筒注射器， 其特征在于， 其中针头盖套座的内缘设有 一内凹的卡持部。
12. 如权利要求 2所述的针筒注射器， 其特征在于， 针头插座是装设在注射筒本 体内部， 且针头插座前端为可供注射针头插设的插设部， 针头插座的后端有一抵挡部， 抵挡部内设有一弹性固定结构的容置空间， 由压迫抵挡部使弹性固定结构松脱， 而令 针头插座连同注射针头收容在注射筒本体内。
13. 如权利要求 2所述的针筒注射器， 其特征在于， 其中气球为一长条状， 且气 球是以具有延展性的材质所制成， 而气球是套设在注射筒本体后端的外缘， 且气球未 套设在注射筒本体外缘的部分为容置在注射筒本体内。
14. 如权利要求 2所述的针筒注射器， 其特征在于， 其中柱塞是一具弹性的材质 所形成的园柱体， 且柱塞是塞设在注射筒本体后端的开口上。
15. 如权利要求 2所述的针筒注射器， 其特征在于， 其中喷嘴的前端形成有一插 设部， 可供喷嘴穿透柱塞并透入气球内， 且插设部上设有数个气孔， 而喷嘴的后端则 有一套置部， 套置部上连接有一输送管， 且输送管与喷嘴相接的另一端是装设在空气 压缩机上。
16. 如权利要求 2所述的针筒注射器， 其特征在于， 其中气球亦可用活塞代替， 且活塞外缘是与注射筒本体的内侧管壁形成密合， 而使活塞与柱塞间产生一密闭气室。
17. 如权利要求 2所述的针筒注射器， 其特征在于， 其中注射筒本体前端外缘亦 可设有一具弹性的连接端， 连接端的另一端则连接在一筒盖上， 且筒盖内为凹设有一 可套设在注射管本体前端针筒盖套座外缘的容置部。
18. 如权利要求 2所述的针筒注射器， 其特征在于， 其中气球可以一活塞代替， 且活塞与柱塞间设有一软管， 软管的一端与活塞连接并贯穿活塞， 而软管的另一端则 穿透柱塞并连接一针头， 并在针头的外缘套设一可压缩材质制成的外套罩。
19. 如权利要求 11所述的针筒注射器， 其特征在于， 其中注射筒本体的卡持部 后端亦可绕设一弹性元件， 以便使针头插座收入注射筒本体内时， 使弹性元件可向中 间弹向针头插座的位置。
20. 如权利要求 12所述的针筒注射器， 其特征在于， 其中注射筒本体与针头插 座的抵挡部间亦可加设一环状的弹性元件， 利用弹性元件增加固定抵挡部所需的阻力。
21. 如权利要求 12所述的针筒注射器， 其特征在于， 其中抵挡部内亦可不设具 弹性固定结构的容置空间， 且抵挡部是以具弹性材质所制成， 抵挡部的外侧缘则与注 射筒本体的内侧筒壁相接， 而气球则以一活塞代替， 并在活塞相对抵挡部方向的外缘 设有环绕活塞的扣钩。
22. 如权利要求 12所述的针筒注射器， 其特征在于， 其中抵挡部内亦可不设具 弹性固定结构的容置空间， 而在抵挡部的外缘套设一具弹性的弹力圈， 且注射筒本体 与抵挡部间设有一个或一个以上的抵持件， 另外注射筒本体内则设有一活塞， 活塞的 一侧对应弹力圈的位置则延伸有环绕在活塞外侧的凸块， 并在凸块间形成一挟持空间， 且凸块顶端的内缘凸设有一园凸部。
23. 如权利要求 12所述的针筒注射器， 其特征在于， 其中抵挡部内亦可不设具 弹性固定结构的容置空间， 而在抵挡部后端设有数个具倒钩的卡榫， 且注射筒本体内 设有一 具弹性材质所制成的活塞。
24. 如权利要求 12所述的针筒注射器， 其特征在于， 其中抵挡部内亦可不设具 弹性固定结构的容置空间， 而在抵挡部后端设有数个环状凹槽， 且气球的外缘对应各 环状凹槽的位置则设有数个园形凸起。
25. 如权利要求 12所述的针筒注射器， 其特征在于， 其中弹性固定结构是由二 相错离的抵顶件相抵合， 其中一抵顶件上延伸有一凸块， 且凸块为延伸在抵挡部外侧 并顶持在注射筒本体的内侧壁缘， 且二抵顶件是以粘胶相粘合。
26. 如权利要求 12所述的针筒注射器， 其特征在于， 其中针头插座插设注射针 头处的外缘亦可环设有一外环体， 且外环体内形成有一可供注射针头螺入的螺纹。
27. 如权利要求 14所述的针筒注射器， 其特征在于， 其中柱塞亦可用非弹性材 质所制成， 且柱塞上开设一穿孔， 并以一快速接头代替喷嘴， 而输送管上设有一接头 座与快速接头相接。
28. 如权利要求 15所述的针筒注射器， 其特征在于， 其中喷嘴后端的套置部亦 可用一穿设部代替， 且穿设部的外园向后端渐成一斜面， 斜面上设有数个卡扣凸块， 使穿设部插入输送管时， 各卡扣凸块与输送管内侧壁面形成干涉而密合。
29. 如权利要求 16所述的针筒注射器， 其特征在于， 其中气球可以一活塞代替， 活塞的后端开设有一固定槽， 固定槽开口处设有若干顶持凸块， 且固定槽为可供一活 塞推杆推入并旋动固定。
30. 如权利要求 17所述的针筒注射器， 其特征在于， 其中筒盖内凹设的容置部 亦可用外凸的塞设部代替， 且塞设部可塞设在注射筒本体前端的针头盖套座内。
31. 如权利要求 17所述的针筒注射器， 其特征在于， 其中筒盖亦可无需连接在 注射筒本体上。
32. 如权利要求 21所述的针筒注射器， 其特征在于， 其中活塞亦可以气球代替， 且气球邻近前端处设有一环绕在气球外缘的环状凸部。
33. 如权利要求 22所述的针筒注射器， 其特征在于， 其中弹力圈亦可为非弹性 材质所制成。
34. 如权利要求 23所述的针筒注射器， 其特征在于， 其中活塞亦可为非弹性材 质制成， 且活塞上亦可在相对在卡榫的位置与数量处开设有数个导孔， 并在各导孔底 端均设有一较导孔宽的容置槽， 且容置槽内亦可开设一管路连接至针头插座供药剂通 过的通道。
35. 如权利要求 23所述的针筒注射器， 其特征在于， 其中抵挡部亦可用具弹性 材质所制成， 而活塞相对在抵挡部方向的一侧则设有若干具倒钩的卡榫。
36. 如权利要求 25所述的针筒注射器， 其特征在于， 其中弹性固定结构亦可由 一个或一个以上的 T型挡块、 数个弹簧所组成， 其中弹簧的一端设有一凸块， 凸块为 延伸在抵挡部外侧并顶持在注射筒本体的内侧壁缘， 且弹簧另一端则抵持在 T型挡块 的延伸长边， 而容置空间的侧边设有一可供 τ型挡块的延伸长边置入的凹槽。
37. 如权利要求 25所述的针筒注射器， 其特征在于， 其中弹性固定结构亦可用 数个弹簧抵持在抵挡部的容置空间内， 使抵挡部两侧抵顶在注射筒本体内侧壁缘， 且 容置空间在各弹簧的一侧分别设有一顶块。
38. 如权利要求 25所述的针筒注射器， 其特征在于， 其中弹性固定结构亦可由 数个挟持组件及一如橡胶等弹性材质所制成的弹力圈所组成， 且弹力圈的外缘是抵顶 在注射筒本体的内侧壁缘， 而弹力圈的内侧为分别抵持于各挟持组件。
39. 如权利要求 27所述的针筒注射器， 其特征在于， 其中快速接头亦可用一般 接头代替， 且输送管则连接在一般接头的后端。
40. 如权利要求 35所述的针筒注射器， 其特征在于， 其中抵挡部亦可用非弹性 物质制成， 且抵挡部在相对于卡榫的位置与数量处开设有数个导孔， 并在各导孔底端 均设有一较导孔宽的容置槽， 且容置槽内亦可开设一管路连接至针头插座供药剂通过 的通道。
41. 如权利要求 38所述的针筒注射器， 其特征在于， 其中挟持组件是由一具弹 性材质弯折成的三角弹片， 三角弹片的开口处的两端为分别弯折成一园型的挟持部， 各挟持部内均套设有一扳持件， 且各扳持件为延伸至三角弹片外侧边， 而三角弹片的 底部形成一弧形的弹性结构。
PCT/CN2002/000553 2002-08-09 2002-08-09 Seringue WO2004014467A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN02829560.9A CN1668350A (zh) 2002-08-09 2002-08-09 一种注射器
CA002497522A CA2497522A1 (en) 2002-08-09 2002-08-09 A syringe
AU2002323842A AU2002323842A1 (en) 2002-08-09 2002-08-09 A syringe
EP02754166A EP1535639A4 (en) 2002-08-09 2002-08-09 SYRINGE
PCT/CN2002/000553 WO2004014467A1 (fr) 2002-08-09 2002-08-09 Seringue

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Application Number Priority Date Filing Date Title
PCT/CN2002/000553 WO2004014467A1 (fr) 2002-08-09 2002-08-09 Seringue

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CA (1) CA2497522A1 (zh)
WO (1) WO2004014467A1 (zh)

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CN102698342A (zh) * 2012-05-25 2012-10-03 浙江大学 便携式自动多药注射装置

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WO2011022618A1 (en) * 2009-08-21 2011-02-24 Becton Dickinson France Sas Pre-filled active vial having integral plunger assembly
EP3380138A1 (en) * 2015-11-27 2018-10-03 Sanofi-Aventis Deutschland GmbH An injection device with an expandable cavity

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EP1952836A1 (de) 2007-01-30 2008-08-06 F.Hoffmann-La Roche Ag Ampulle mit Verdrängungskörper
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CN102698342A (zh) * 2012-05-25 2012-10-03 浙江大学 便携式自动多药注射装置

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EP1535639A1 (en) 2005-06-01
EP1535639A4 (en) 2009-01-07
CA2497522A1 (en) 2004-02-19
CN1668350A (zh) 2005-09-14

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