CN113509613B - Application method of ring handle syringe - Google Patents

Application method of ring handle syringe Download PDF

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Publication number
CN113509613B
CN113509613B CN202110637203.1A CN202110637203A CN113509613B CN 113509613 B CN113509613 B CN 113509613B CN 202110637203 A CN202110637203 A CN 202110637203A CN 113509613 B CN113509613 B CN 113509613B
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China
Prior art keywords
pushing
push rod
piece
middle finger
rod
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Active
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CN202110637203.1A
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Chinese (zh)
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CN113509613A (en
Inventor
王梓曼
李泽明
向仟元
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Zhuhai Radisson Medical Technology Co ltd
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Zhuhai Radisson Medical Technology Co ltd
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Priority to CN202110637203.1A priority Critical patent/CN113509613B/en
Publication of CN113509613A publication Critical patent/CN113509613A/en
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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/007Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests for contrast media
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/3129Syringe barrels
    • A61M5/3137Specially designed finger grip means, e.g. for easy manipulation of the syringe rod
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/315Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31501Means for blocking or restricting the movement of the rod or piston
    • A61M5/31505Integral with the syringe barrel, i.e. connected to the barrel so as to make up a single complete piece or unit

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

Abstract

The invention discloses a use method of a ring handle injector, which comprises the following steps that an index finger and a middle finger respectively extend into ring handles at two ends of a cylinder body, and a pushing piece is pressed downwards, so that the pushing piece presses a groove on a limiting piece to a bulge which is separated from a push rod, and the push rod is pulled upwards, so that liquid to be injected enters the cylinder body; the forefinger and the middle finger continuously press the pushing piece, and the other hand drives the push rod to move downwards, so that the piston drives the liquid to be injected to be discharged out of the cylinder; when the pushing rod receives excessive pressure and cannot be pushed continuously or certain pressure needs to be maintained, the forefinger and the middle finger release the pushing piece, and at the moment, the groove on the limiting piece is matched with the protrusion again to clamp the pushing rod, so that the pushing rod cannot move upwards. So set up, through recess and protruding cooperation, restriction push rod upward movement to make the state that keeps a stable pressure in the barrel, need not the operator and continuously press the push rod with the hand, easy operation is convenient when laborsaving.

Description

Application method of ring handle syringe
Technical Field
The invention relates to the technical field of ring handle syringes, in particular to a use method of a ring handle syringe.
Background
The loop handle injector is an instrument for manually injecting liquid medicine or contrast agent by an operator in the minimally invasive interventional therapy process. In the process of injecting the liquid medicine, the ring handle injector needs to bear high pressure continuously, so that the normal completion of the liquid medicine injection can be ensured.
The existing ring handle injector is generally used in a mode that an operator holds a barrel part of the ring handle injector by one hand and then presses a push rod through a thumb or the other hand to perform injection, high-pressure injection is needed in part of the process, and in the injection process, the push rod is possibly pressed back to the top under high pressure due to too small pressing force of the operator, so that effective injection cannot be completed.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a using method of the ring handle injector, and the upward displacement of the push rod is limited by matching the groove on the limiting piece with the protrusion on the push rod, so that the inside of the cylinder body is kept in a stable pressure state.
A method of using a loop grip syringe according to an embodiment of the invention includes the steps of:
in the preparation stage, the index finger and the middle finger of one hand respectively extend into the handles at the two ends of the cylinder body, and the pushing piece is pressed downwards, so that the pushing piece presses the groove on the limiting piece to the bulge on the push rod, and the push rod is pulled upwards, so that the liquid to be injected enters the cylinder body;
the pushing stage is characterized in that the forefinger and the middle finger continuously press the pushing piece, and the pushing rod is driven downwards to move, so that the piston drives the liquid to be injected to be discharged out of the cylinder;
and in the limit stopping stage, when the pressure born by the push rod is too large and can not be pushed continuously or certain pressure is required to be maintained, the forefinger and the middle finger loosen the pushing piece, and at the moment, the groove on the limit piece is matched with the protrusion again to clamp the push rod, so that the push rod can not move upwards.
The method for using the ring handle injector has at least the following beneficial effects: in the operation process, the pushing piece is pressed downwards by the index finger and the middle finger, so that the push rod can be driven to suck the liquid to be injected upwards, the push rod can be driven downwards, the piston on the push rod can drive the liquid to be injected to be discharged out of the cylinder body, when the pressure born by the push rod is overlarge, the index finger and the middle finger can loosen the pushing piece, so that the groove is matched with the bulge again, the push rod is limited to move upwards, the state of stable pressure is kept in the cylinder body, an operator is not required to continuously press the push rod by hands, and the operation is simple and convenient while labor saving.
According to some embodiments of the invention, the groove and the protrusion are in threaded fit, and in the pushing stage, the forefinger and the middle finger can loosen the pushing piece, and the other hand can drive the push rod to rotate, so that the push rod can be spirally moved downwards.
According to some embodiments of the invention, an operating ring is connected to the push rod at the pressing end, through which the push rod can be pressed or rotated.
According to some embodiments of the invention, the pushing piece is provided with a pushing plate at a lower end and a wedge block at an upper end, and in the preparation stage, the index finger and the middle finger press against the pushing plate and press the pushing plate downwards, so that the wedge block pushes the groove on the limiting piece downwards.
According to some embodiments of the invention, a connecting rod is arranged between the wedge block and the pushing plate, a positioning convex part is arranged on the connecting rod, the limiting piece is arranged between the positioning convex part and the wedge block, and a displacement range of the pushing piece is limited between the positioning convex part and the wedge block.
According to some embodiments of the invention, the upper end of the positioning convex part is provided as a plane, and the lower end is provided as a guiding inclined plane.
According to some embodiments of the invention, the recess is inclined in a direction from a side remote from the cylinder downwardly toward the central axis of the cylinder.
According to some embodiments of the invention, the limiting member is a thermoplastic elastomer member, and after the forefinger and the middle finger release the pushing member in the limiting stop stage, the limiting member resets by virtue of elasticity of the limiting member, so that the groove is matched with the protrusion again.
According to some embodiments of the invention, the lower end of the limiting piece is provided with a back-off, the upper end of the cylinder is provided with a circle of flange, and the back-off is matched with the flange to connect the limiting piece to the cylinder.
According to some embodiments of the invention, before the preparation stage, the method further comprises an installation stage, wherein one end of the push rod with the piston is inserted into the cylinder, then the limiting piece is buckled on the flange of the cylinder, the protrusion and the groove are matched together, the pushing piece is installed along the axial direction of the cylinder, the limiting piece is pressed into the pushing piece, and finally glue is coated at all joints for solidification connection.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of a stem-loop syringe according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the loop grip syringe of FIG. 1;
FIG. 3 is an exploded view of the loop grip syringe of FIG. 1
FIG. 4 is a partial schematic view of a stem injector of the present invention (stopper ejected);
fig. 5 is a partial schematic view of the loop grip syringe of the present invention (stopper reset state).
Barrel 100, stem 110, flange 120;
push rod 200, protrusion 210;
a limiting piece 300, a limiting part 310, a groove 320 and a back-off 330;
pushing piece 400, wedge block 410, pushing plate 420, connecting rod 430 and positioning convex part 440;
ring 500 is operated.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a number is one or more, the meaning of a number is more than a number, and more than, less than, exceeding, etc. are understood to not include the present number, and more than, less than, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1 to 5, a method of using a stem-loop syringe according to an embodiment of the present invention includes the steps of:
in the preparation stage, the index finger and the middle finger of one hand respectively extend into the handles 110 at the two ends of the barrel 100, and the pushing piece 400 is pressed downwards, so that the pushing piece 400 presses the groove 320 on the limiting piece 300 to the protrusion 210 on the push rod 200, and the push rod 200 is pulled upwards, so that the liquid to be injected enters the barrel 100;
in the pushing stage, the forefinger and the middle finger continuously press the pushing piece 400 and drive the push rod 200 downwards to move, so that the piston drives the liquid to be injected to be discharged out of the cylinder 100;
in the limit stop stage, when the pushing rod 200 is subjected to excessive pressure and cannot be pushed continuously or certain pressure needs to be maintained, the forefinger and the middle finger release the pushing piece 400, and at the moment, the groove 320 on the limiting piece 300 is matched with the protrusion 210 again, so that the pushing rod 200 is blocked, and the pushing rod 200 cannot move upwards.
It should be noted that, in the above embodiment, one-hand operation or two-hand operation may be performed, in which, the index finger and the middle finger extend into the ring handles 110 at two ends of the cylinder 100, and clamp the cylinder 100, then press the push rod 200 with the thumb to make the push rod 200 move downward, the protrusion 210 on the push rod 200 can prop up the groove 320 under the downward force, so that the push rod 200 moves downward smoothly, when pressure needs to be maintained, the pressing is stopped, the groove 320 is reset to be matched with the protrusion 210 again, so that the push rod 200 is blocked, and the push rod 200 cannot move upward; during double-hand operation, the index finger and the middle finger of one hand extend into the ring handles 110 at two ends of the barrel 100, the barrel 100 is clamped, the pushing piece 400 is pressed downwards, the push rod 200 is pulled upwards by the other hand, liquid to be injected enters the barrel 100, in the pushing stage, the pushing piece 400 is continuously pressed by the index finger and the middle finger of one hand, the push rod 200 is pressed by the other hand, the push rod 200 is driven downwards to move, the liquid to be injected is driven by the piston to be discharged out of the barrel 100, or the upper end of the ring handles 110 is hooked by the index finger and the middle finger, the push rod 200 is pressed by the other hand, the push rod 200 moves downwards, the groove 320 can be pushed open by the protrusion 210 on the push rod 200 under the downward acting force, and the push rod 200 moves downwards smoothly.
In the above embodiment, the cylinder 100 is in a hollow cylindrical shape, two ring handles 110 are disposed on the outer wall of the cylinder 100, an operator can hold the cylinder 100 through the two ring handles 110, a liquid access channel is further disposed at the lower end of the cylinder 100, a push rod 200 is movably disposed in the cylinder 100, a piston is disposed at one end of the push rod 200, the piston can move up and down in the cylinder 100, the piston is in close contact with the inner wall of the cylinder 100, when the piston is driven by the push rod 200 to displace upward, a negative pressure is formed in the cylinder 100, so that liquid can be sucked through the liquid access channel, when the piston is driven by the push rod 200 to displace downward, the piston can push the liquid in the cylinder 100 out through the liquid access channel, a plurality of protrusions 210 are further disposed on the rod body of the push rod 200, a limiting member 300 is disposed at the upper end of the cylinder 100, a limiting portion 310 is movably disposed on the limiting member 310, the groove 320 can be clamped on the protrusions 210, so that the push rod 2 cannot displace upward, a wedge-shaped block 410 is further disposed on the cylinder 100, and the wedge-shaped block 410 can disengage from the protrusions 210 downward, so that the push rod 200 can displace freely.
Referring to fig. 1 to 5, when the above-mentioned ring handle syringe is used, the index finger and the middle finger extend into the ring handle 110, and press the pushing piece 400 downwards, so that the wedge block 410 on the pushing piece 400 pushes the limit part 310 against the protrusion 210, as shown in fig. 4, at this time, the push rod 200 is driven to displace upwards, so that the liquid is sucked into the barrel 100, the ring handle syringe is transferred to the target to be injected, the push rod 200 is driven to move downwards, the piston is driven to move downwards along with the push rod 200, the pressure on the push rod 200 is increased, when the pressure needs to be stabilized at a fixed pressure, the index finger and the middle finger lift, the pushing piece 400 stops being pressed, the limit part 310 resets and is clamped on the protrusion 210 again, as shown in fig. 5, at this time, the push rod 200 is clamped and cannot displace upwards under the action of the pressure, so that the pressure of the space in the barrel 100 below the piston remains stable, and thus an operator is not required to hold the stable pressure by holding down the push rod 200.
The method for using the ring handle injector has at least the following beneficial effects: in the operation process, the pushing piece 400 is pressed downwards by the index finger and the middle finger, so that the push rod 200 can be driven to suck the liquid to be injected upwards, the push rod 200 can be driven downwards, the piston on the push rod 200 can drive the liquid to be injected to be discharged out of the cylinder 100, when the pressure on the push rod 200 is overlarge, the index finger and the middle finger can release the pushing piece 400, so that the groove 320 is matched with the bulge 210 again, the push rod 200 is limited to move upwards, the cylinder 100 is kept in a stable pressure state, an operator does not need to continuously press the push rod 200 by hands, and the operation is simple and convenient while labor is saved.
According to some embodiments of the present invention, the grooves 320 and the protrusions 210 are in threaded engagement, i.e., a plurality of protrusions 210 are arranged on the shaft in a spiral line, and an external thread is formed on the shaft, and an internal thread is correspondingly provided in the grooves 320, so that in the use process, the limit portion 310 can be pushed up and down by the wedge block 410, and the push rod 200 can be driven to rotate, so that the push rod 200 is stably displaced up and down, and a stable pressure output can be maintained downwards by the push rod 200 when the push rod 200 is displaced by rotation.
According to some embodiments of the present invention, referring to fig. 1 to 3, an operation ring 500 is connected to an upper end of the push rod 200, and an operator can insert his or her finger into the operation ring 500 to rapidly drive the push rod 200 to move up and down, or press the outer edge of the operation ring 500 to drive the operation ring 500 to rotate, so as to drive the push rod 200 to rotate up or rotate down, and the connection manner between the push rod 200 and the operation ring 500 may be fixedly connected by glue.
According to some embodiments of the present invention, referring to fig. 1 to 3, a pushing plate 420 is provided at the lower end of the pushing member 400, a wedge block 410 is provided at the upper end of the pushing member 400, an operator presses the pushing member 400 downward by abutting the index finger and the middle finger on the pushing plate 420, and the wedge block 410 can push the limiting portion 310, so that the groove 320 is separated from the protrusion 210 on the shaft, and the operation is simple and convenient, and the operator is not easy to get out of hand.
According to some embodiments of the present invention, referring to fig. 3, a connecting rod 430 is disposed between a wedge block 410 and a push plate 420, a positioning protrusion 440 is disposed on the connecting rod 430, and a displacement range of the pushing member is defined between the positioning protrusion 440 and the wedge block 410, it should be noted that, when both the limiting member 300 and the pushing member 400 are mounted on the cylinder 100, referring to fig. 4 and 5, the limiting member 300 is fixed on the cylinder 100, and when the pushing member 400 is displaced upward, when the positioning protrusion 440 abuts against a lower end of the limiting member 300, the pushing member 400 cannot move continuously, and when the limiting member 310 is pushed downward, and when the wedge block of the pushing member 400 is fully contacted with an upper surface of the limiting member 31, the limiting member 300 limits the pushing member 400 to move continuously downward, thereby preventing the displacement range of the pushing member 400 from being too large, coming out of the cylinder 100, or disabling the limiting member 310 from being effectively reset.
In the above embodiment, referring to fig. 3 or 4, the upper end of the positioning protrusion 440 is configured to be flat, so that the stopper 300 can be sufficiently contacted with the positioning protrusion 440 to form a positioning effect, and the lower end of the positioning protrusion 440 is configured to be a guiding slope, which can perform a guiding function when the stopper 300 is installed between the positioning protrusion 440 and the wedge 410, so that the stopper 300 is more easily installed without generating excessive interference.
According to some embodiments of the present invention, referring to fig. 4 and 5, the limiting portion 310 is disposed obliquely, the groove 3 is also disposed obliquely, and both the end far from the protrusion 210 is inclined downward toward the central axis direction of the cylinder 100, so that the limiting portion 310 is more easily separated from the protrusion 210 when the wedge 410 is pushed downward, and the downward inclined limiting portion 310 corresponds to an anti-reflection structure when the limiting portion 310 is matched with the protrusion 210, so as to effectively prevent the push rod 200 from moving upward.
According to some embodiments of the present invention, the stop 300 is a thermoplastic elastomer member, which may be a styrenic TPE, an olefinic TPE, a diene TPE, or the like. The material has enough hardness and certain elasticity, and referring to fig. 4 and 5, after the pushing piece 400 pushes the limiting part 310 downwards, the pushing plate 420 is loosened, the limiting part 310 is reset upwards under the action of self elasticity, and meanwhile, the pushing piece 400 can be displaced upwards, so that the pushing piece 400 can be clamped with the protrusion 210 again, and the push rod 20 is limited to be displaced upwards.
According to some embodiments of the present invention, referring to fig. 3 and 4, the lower end of the stopper 300 is provided with a back-off 330, the upper end of the barrel 100 is provided with a round of flange 120, and the stopper 300 is fixedly clamped on the barrel 100 by the cooperation of the back-off 330 and the flange 120.
According to some embodiments of the invention, referring to fig. 3, before the preparation phase, an installation phase is further included, the installation process of which is as follows: firstly, one end of the push rod 200 with a piston is inserted into the cylinder 100 and pushed to the lowest end, then the limiting piece 300 is buckled on the flange 120 at the upper end of the cylinder 100, the groove 320 on the limiting piece 300 is matched with the protrusion 210 on the rod body, the pushing piece is installed along the axial direction of the cylinder 100, the limiting piece 300 enters between the positioning convex part 440 and the wedge-shaped block 410 through the guiding inclined plane of the positioning convex part 440, then the operation ring 500 is installed on the end of the push rod 200 positioned at the outer side of the cylinder 100, and finally glue is coated on all the connecting parts for solidification connection.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.

Claims (6)

1. The utility model provides a ring handle syringe which characterized in that includes barrel, ejector, locating part and push rod, ring handle syringe's application method includes the following steps:
the preparation stage, the index finger and the middle finger of one hand respectively extend into the annular handles at two ends of the cylinder body, the pushing piece is pressed downwards, the pushing piece presses the groove on the limiting piece to the bulge on the separation pushing rod, the pushing rod is pulled upwards, the liquid to be injected enters the cylinder body, the lower end of the pushing piece is provided with a pushing plate, the upper end of the pushing piece is provided with a wedge block, in the preparation stage, the index finger and the middle finger are pressed on the pushing plate, the pushing plate is pressed downwards, the wedge block downwards pushes the groove on the limiting piece, a connecting rod is arranged between the wedge block and the pushing plate, a positioning convex part is arranged on the connecting rod, the limiting piece is arranged between the positioning convex part and the wedge block, the displacement range of the pushing piece is limited between the positioning convex part and the wedge block, the upper end of the positioning convex part is arranged as a plane, the lower end of the positioning convex part is arranged as a guiding inclined plane, and the groove is obliquely arranged, and the inclination direction of the groove is from one side far away from the cylinder body to the downward inclination of the central axis of the cylinder body;
the pushing stage is characterized in that the forefinger and the middle finger continuously press the pushing piece, and the pushing rod is driven downwards to move, so that the piston drives the liquid to be injected to be discharged out of the cylinder;
and in the limit stopping stage, when the pressure born by the push rod is too large and can not be pushed continuously or certain pressure is required to be maintained, the forefinger and the middle finger loosen the pushing piece, and at the moment, the groove on the limit piece is matched with the protrusion again to clamp the push rod, so that the push rod can not move upwards.
2. A loop grip injector according to claim 1 wherein said recess is in threaded engagement with said projection and wherein said index finger and said middle finger release said pusher during said pushing stage and the other hand drives said plunger to rotate causing said plunger to spiral downwardly.
3. A method of using a loop grip syringe according to claim 2, wherein an operating ring is connected to the push rod at the push end, through which both the push rod can be pushed and rotated.
4. A stem injector according to any one of claims 1 to 3 wherein the stop member is provided as a thermoplastic elastomer member and, in the stop phase, the stop member is reset by its own resilience to re-engage the recess with the projection after the index finger and middle finger release the ejector member.
5. The loop grip syringe of claim 4, wherein said stopper is provided with a back-off at its lower end, and said barrel is provided with a collar at its upper end, said back-off engaging said collar to connect said stopper to said barrel.
6. A stem injector as defined in claim 5, further comprising an installation step of inserting an end of the push rod having the piston into the barrel before the preparation step, and then snap-fitting the stopper onto the flange of the barrel, fitting the projection and the recess together, loading the pusher in the axial direction of the barrel, and pressing the stopper into the pusher.
CN202110637203.1A 2021-06-08 2021-06-08 Application method of ring handle syringe Active CN113509613B (en)

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CN113509613B true CN113509613B (en) 2023-08-15

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Publication number Priority date Publication date Assignee Title
CN114939208B (en) * 2022-05-12 2023-12-22 山东汇荣生物科技有限公司 Liquid hyaluronic acid injection system for plastic and cosmetic surgery

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CN110709122A (en) * 2017-04-13 2020-01-17 贝克顿·迪金森公司 Controlled delivery syringe device
CN111939385A (en) * 2020-08-18 2020-11-17 深圳市立心科学有限公司 Syringe for viscous and incompressible fluids

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US20160144122A1 (en) * 2014-11-26 2016-05-26 Fisher Clinical Services GmbH Syringe Assembly with Plunger Rod Backstop and Method of Use
US10532163B2 (en) * 2016-07-02 2020-01-14 Gennady Kleyman Fluid dispensing device
US20190307963A1 (en) * 2018-04-10 2019-10-10 Fisher Clinical Services GmbH Syringe assembly with releasable backstop and method of use

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Publication number Priority date Publication date Assignee Title
US4915695A (en) * 1988-09-12 1990-04-10 Koobs David C Multiple barrel syringe
CN204147362U (en) * 2014-10-11 2015-02-11 优骏精密工业(深圳)有限公司 Ring handle syringe
CN206285316U (en) * 2016-07-12 2017-06-30 深圳市龙岗中心医院 A kind of syringe of accurate quantification liquid relief
CN110709122A (en) * 2017-04-13 2020-01-17 贝克顿·迪金森公司 Controlled delivery syringe device
CN111939385A (en) * 2020-08-18 2020-11-17 深圳市立心科学有限公司 Syringe for viscous and incompressible fluids

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