CN114917449A - Dosage adjustable local anesthesia equipment for anesthesia department - Google Patents

Dosage adjustable local anesthesia equipment for anesthesia department Download PDF

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Publication number
CN114917449A
CN114917449A CN202210586848.1A CN202210586848A CN114917449A CN 114917449 A CN114917449 A CN 114917449A CN 202210586848 A CN202210586848 A CN 202210586848A CN 114917449 A CN114917449 A CN 114917449A
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China
Prior art keywords
cylinder
wall
needle cylinder
inner chamber
cavity
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Granted
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CN202210586848.1A
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Chinese (zh)
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CN114917449B (en
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朱永辉
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Cao Qingxiang
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    • 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
    • A61M19/00Local anaesthesia; Hypothermia
    • 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
    • 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
    • A61M5/31511Piston or piston-rod constructions, e.g. connection of piston with piston-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
    • A61M5/31533Dosing mechanisms, i.e. setting a dose
    • 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
    • A61M5/31533Dosing mechanisms, i.e. setting a dose
    • A61M5/31545Setting modes for dosing
    • A61M5/31548Mechanically operated dose setting member
    • 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
    • A61M5/31533Dosing mechanisms, i.e. setting a dose
    • A61M5/31545Setting modes for dosing
    • A61M5/31548Mechanically operated dose setting member
    • A61M5/31555Mechanically operated dose setting member by purely axial movement of dose setting member, e.g. during setting or filling of a syringe
    • 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
    • A61M5/31533Dosing mechanisms, i.e. setting a dose
    • A61M5/31545Setting modes for dosing
    • A61M5/31548Mechanically operated dose setting member
    • A61M5/31556Accuracy improving means
    • 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
    • A61M2202/00Special media to be introduced, removed or treated
    • A61M2202/04Liquids
    • A61M2202/0468Liquids non-physiological
    • A61M2202/048Anaesthetics

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

Abstract

The invention discloses a dose-adjustable local anesthesia device for an anesthesia department, which comprises a needle cylinder, wherein a thread column is installed on the wall of an inner cavity of the needle cylinder in a threaded manner and is penetrated through by an extrusion piece, a liquid accommodating cavity is formed between the right end of the extrusion piece and the wall of the inner cavity of the needle cylinder, the inner cavity of the thread column is provided with an accommodating cavity, the accommodating cavity comprises a cylindrical cavity and a rectangular sliding groove, an elastic resetting piece is installed in the cylindrical cavity, and the elastic resetting piece is sleeved on the extrusion piece. According to the local anesthesia equipment with adjustable dosage for the anesthesia department, the volume of the liquid containing cavity can be changed by rotating the extrusion piece, so that the absorption amount of an anesthetic is changed, the extrusion rod can drive the elastic sealing head to move in the needle cylinder through the elastic action of the reset spring, so that the anesthetic is absorbed into the needle cylinder, the triangular reinforcing blocks are arranged on the finger supporting blocks, and the structural strength of the finger supporting blocks can be enhanced.

Description

Dosage adjustable local anesthesia equipment for anesthesia department
Technical Field
The invention relates to the field of anesthesia equipment, in particular to a dose-adjustable local anesthesia device for an anesthesia department.
Background
When an existing anesthesia department performs anesthesia on a patient, a needle cylinder is generally used for sucking a certain amount of anesthetic to perform anesthesia on the patient, when the patient needs to perform quantitative anesthesia, the patient needs to tightly look at scales on the needle cylinder to suck the anesthetic when a pull rod is manually pulled to suck the anesthetic every time, the patient is troublesome, manual operation easily causes deviation, and the amount of the anesthetic to be measured is different, so that a local anesthesia device with adjustable dose for the anesthesia department is provided to solve the problem.
Disclosure of Invention
The invention mainly aims to provide a dose-adjustable local anesthesia device for an anesthesia department, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a department of anesthesia is with dose adjustable local anesthesia equipment, includes the cylinder, be equipped with the scale on the cylinder, the output of cylinder is connected with the syringe needle, the screw thread is installed on the inner chamber wall of cylinder just the screw thread post is run through by the extruded article, form between the right-hand member of extruded article and the inner chamber wall of cylinder and hold the sap cavity, the inner chamber of screw thread post is equipped with and holds the chamber, it includes cylinder die cavity and rectangle spout to hold the chamber, the cylinder type intracavity is installed elasticity and is reset the piece, elasticity resets and cup joints on the extruded article, extruded article part slides and sets up the inner chamber that holds the chamber.
Preferably, the extruded part includes the stripper bar, the stripper bar is located the contact of the side outer end tip of cylinder and is fixed with the pressure piece, the stripper bar is located the end department of cylinder inner chamber and installs the outer wall of elastic seal head and the inner chamber wall of cylinder inconsistent, be fixed with the slider on the outer wall of cylinder just the slider is located the inner chamber of rectangle spout and rather than sliding connection.
Preferably, it is characterized in that: the junction at extrusion pole and screw thread post both ends all is equipped with waterproof packing ring and two sets of waterproof packing ring and all fixes cup jointing on the extrusion pole, and is two sets of the outer wall of waterproof packing ring all offsets with the inner chamber wall of screw thread post.
Preferably, be a plurality of groups of friction sand grip are installed to the annular outer wall that presses the briquetting on being even equidistant, press the briquetting and keep away from on the terminal surface of extrusion pole and be fixed with elastic buffer pad through gluing agent.
Preferably, the elasticity piece that resets includes two sets of sliding rings and a set of reset spring, reset spring's both ends respectively with a set of sliding ring fixed connection, two sets of the sliding ring all is located cylinder type intracavity, left side the left end of sliding ring is inconsistent with the inner chamber wall of cylinder type chamber, the right side the right-hand member of sliding ring is inconsistent with the terminal surface of slider.
Preferably, be equipped with internal thread section on the inner chamber wall of cylinder and the external screw thread threaded connection that is equipped with on internal thread section and the screw thread post outer wall, be fixed with the elastic fastening packing ring through gluing the binder on the internal thread section inner wall of cylinder.
Preferably, two groups of finger supporting blocks are symmetrically fixed on the outer wall of the needle cylinder, triangular reinforcing blocks are installed at the right ends of the two groups of finger supporting blocks, two ends of each triangular reinforcing block are fixedly connected with the finger supporting blocks and the outer wall of the needle cylinder respectively, and anti-skidding convex strips are uniformly arranged on one ends of the two groups of finger supporting blocks, which are opposite to the triangular reinforcing blocks, at equal intervals.
The operation steps of the local anesthesia equipment with adjustable dosage for the anesthesia department are as follows;
adjustment of anesthetic agent uptake
The needle cylinder is held by one hand to keep the needle cylinder still, the outer wall of the pressing block is pinched by the other hand with fingers and the pressing block is rotated, the extrusion rod is driven to rotate by the pressing block and is driven to rotate in the inner cavity of the needle cylinder by the sliding block arranged on the extrusion rod, so that the extrusion rod drives the elastic sealing head to do transverse linear motion, the volume of the solution cavity can be changed by referring to the scale arranged on the needle cylinder, and the absorption amount of the anesthetic is adjusted;
aspiration of anesthetic dose
The forefinger and the middle finger are respectively contacted with one end of the antiskid convex strip arranged on the two groups of finger supporting blocks, the thumb of the forefinger is contacted with the outer end of the pressing block and presses the pressing block, so that the elastic sealing head stops pressing when being inconsistent with the inner cavity wall of the needle cylinder, the needle head is placed in anesthetic, the thumb is slowly loosened, the extrusion rod can drive the elastic sealing head to move backwards through the elastic action of the reset spring, and the medicament is quantitatively sucked into the solution cavity.
Compared with the prior art, the invention has the following beneficial effects:
1. this equipment is equipped with elasticity piece that resets, screw thread post and extruded article, and the accessible rotates the extruded article and changes the volume that holds the sap cavity to change the volume of absorbing of anesthesia medicament, reset the reset spring's that the piece elasticity effect can make the stripper bar drive the sealed head of elasticity and remove in the cylinder through elasticity, thereby inhale the medicament in the cylinder, this equipment convenient operation is simple and be difficult to cause the deviation.
2. The triangular reinforcing block is arranged on the finger supporting block, so that the structural strength of the finger supporting block can be enhanced, and the finger supporting block can be prevented from being damaged due to overlarge pressure.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a dose-adjustable local anesthesia apparatus for anesthesia department;
FIG. 2 is a schematic view of the connection between a threaded column and an extrusion of the adjustable dosage local anesthesia apparatus for anesthesia department;
FIG. 3 is a schematic view of a split structure of a threaded column of a dose-adjustable local anesthesia apparatus for anesthesia department according to the present invention;
FIG. 4 is a schematic structural view of an elastic resetting member of a dose-adjustable local anesthesia apparatus for anesthesia department of the present invention;
fig. 5 is a schematic structural view of a front view section of a needle cylinder of the local anesthesia equipment with adjustable dosage for the anesthesia department.
In the figure: 1. a needle cylinder; 2. a needle head; 3. a finger support block; 4. a triangular reinforcing block; 5. an extrusion; 51. an extrusion stem; 52. a pressing block; 53. an elastic sealing head; 54. a slider; 6. a threaded post; 7. a cylindrical cavity; 8. an elastic reset member; 81. a slip ring; 82. a return spring; 9. a rectangular chute; 10. an elastic fastening washer.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
As shown in fig. 1-5, a department of anesthesia is with dose adjustable local anesthesia equipment, including cylinder 1, be equipped with the scale on cylinder 1, the output of cylinder 1 is connected with syringe needle 2, threaded column 6 and threaded column 6 are installed to the screw thread on the inner chamber wall of cylinder 1 and are run through by extruded article 5, form between the right-hand member of extruded article 5 and the inner chamber wall of cylinder 1 and hold the liquid chamber, the inner chamber of threaded column 6 is equipped with and holds the chamber, it includes cylindrical cavity 7 and rectangle spout 9 to hold the chamber, it resets 8 to install elasticity in the cylindrical cavity 7, elasticity resets 8 and cup joints on extruded article 5, extruded article 5 part slides and sets up the inner chamber that holds the chamber.
The extrusion piece 5 comprises an extrusion rod 51, the extrusion rod 51 is positioned at the end head of the outer end of the side of the needle cylinder 1 and is fixedly contacted with a pressing block 52, the end head of the extrusion rod 51 positioned in the inner cavity of the needle cylinder 1 is provided with an elastic sealing head 53, the outer wall of the elastic sealing head 53 is propped against the wall of the inner cavity of the needle cylinder 1, the outer wall of the needle cylinder 1 is fixedly provided with a sliding block 54, the sliding block 54 is positioned in the inner cavity of the rectangular sliding groove 9 and is in sliding connection with the inner cavity, the elastic sealing head 53 can move in the needle cylinder 1 by pressing the extrusion rod 51, and the anesthetic in the liquid containing cavity can be extruded out of the liquid containing cavity.
The junction at the two ends of the extrusion rod 51 and the threaded column 6 is provided with a waterproof gasket, and the two groups of waterproof gaskets are fixedly sleeved on the extrusion rod 51, the outer walls of the two groups of waterproof gaskets are abutted to the inner cavity wall of the threaded column 6, and the arrangement of the waterproof gaskets can prevent liquid from entering the accommodating cavity of the threaded column 6 to influence the elasticity of the elastic reset piece 8.
According to be even equidistant on the annular outer wall of pressing block 52 and install a plurality of groups friction sand grip, can increase and the effect of the frictional force between the hand, be convenient for realize according to the rotation of pressing block 52, press block 52 to keep away from on the terminal surface of pressure stem 51 fixed with the elastic buffer pad through gluing the adhesive, can cushion the thumb and press the pressure effect between the block 52, improve and press the comfort level.
The elastic reset piece 8 comprises two sets of slip rings 81 and a set of reset spring 82, the two ends of the reset spring 82 are respectively fixedly connected with a set of slip rings 81, the two sets of slip rings 81 are both positioned in the cylindrical cavity 7, the left end of the left slip ring 81 is abutted to the inner cavity wall of the cylindrical cavity 7, the right end of the right slip ring 81 is abutted to the end surface of the sliding block 54, the elastic sealing head 53 can move under the action of the elastic force of the reset spring 82, and therefore anesthetic can be automatically sucked into the needle cylinder 1.
The inner cavity wall of the needle cylinder 1 is provided with an internal thread section, the internal thread section is in threaded connection with an external thread arranged on the outer wall of the thread column 6, the inner wall of the internal thread section of the needle cylinder 1 is fixed with an elastic fastening gasket 10 through an adhesive, and the elastic fastening gasket 10 has a certain fixing effect on the thread column 6 and can prevent the thread column 6 from rotating.
Be the symmetry and be fixed with two sets of finger support blocks 3 and the right-hand member of two sets of finger support blocks 3 on the outer wall of cylinder 1 and all install triangle boss 4, the both ends of triangle boss 4 respectively with the outer wall fixed connection of finger support block 3 and cylinder 1, the even equidistant anti-skidding sand grip that is provided with in one of the relative triangle boss 4 of two sets of finger support blocks 3, the triangle boss 4 that is equipped with can strengthen the structural strength to finger support block 3, prevent that it from leading to the damage because of the pressure that receives is too big, the effect of the friction force between anti-skidding sand grip shell increase and the hand that is equipped with on the finger support block 3, play skid-proof effect.
The operation steps of the local anesthesia equipment with adjustable dosage for the anesthesia department are as follows;
adjustment of anesthetic agent uptake
Holding the syringe 1 by one hand to keep the syringe immovable, pinching the outer wall of the pressing block 52 by the other hand with fingers and rotating the pressing block 52, driving the extrusion rod 51 to rotate through the pressing block 52, driving the threaded column 6 to rotate in the inner cavity of the syringe 1 by the extrusion rod 51 through the slide block 54 arranged on the extrusion rod 51, enabling the extrusion rod 51 to drive the elastic sealing head 53 to do horizontal linear motion, and changing the volume of the solution cavity by referring to the scales arranged on the syringe 1, thereby adjusting the absorption amount of the anesthetic;
aspiration of anesthetic dose
The forefinger and the middle finger are respectively contacted with one end of the two groups of finger supporting blocks 3 provided with the anti-skid convex strips, the thumb of the forefinger and the middle finger is contacted with the outer end of the pressing block 52 and presses the pressing block 52, so that the elastic sealing head 53 stops pressing when being inconsistent with the inner cavity wall of the needle cylinder 1, the needle head 2 is placed in anesthetic, the thumb slowly releases, the extrusion rod 51 can drive the elastic sealing head 53 to move backwards through the elastic action of the reset spring 82, and the medicament is quantitatively sucked into the solution cavity.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. The utility model provides a department of anesthesia is with dose adjustable local anesthesia equipment, includes cylinder (1), be equipped with the scale on cylinder (1), the output of cylinder (1) is connected with syringe needle (2), its characterized in that: screw thread post (6) are installed to the screw thread on the inner chamber wall of cylinder (1) just screw thread post (6) are run through by extruded article (5), form between the right-hand member of extruded article (5) and the inner chamber wall of cylinder (1) and hold the liquid chamber, the inner chamber of screw thread post (6) is equipped with and holds the chamber, it includes cylinder die cavity (7) and rectangle spout (9) to hold the chamber, install elasticity in cylinder die cavity (7) and reset piece (8), elasticity resets and cup joints on extruded article (5) piece (8), extruded article (5) part slides and sets up the inner chamber that holds the chamber.
2. The adjustable dosage local anesthesia apparatus of claim 1, wherein: extruded piece (5) are including extrusion stem (51), extrusion stem (51) are located the contact of the outside end tip of side of cylinder (1) and are fixed with and press briquetting (52), extrusion stem (51) are located the end department of cylinder (1) inner chamber and install the outer wall of elastic sealing head (53) and the inner chamber wall of cylinder (1) inconsistent, be fixed with on the outer wall of cylinder (1) slider (54) just slider (54) are located the inner chamber of rectangle spout (9) and rather than sliding connection.
3. The adjustable dosage local anesthesia apparatus of claim 1, wherein: the junction at extrusion stem (51) and screw thread post (6) both ends all is equipped with waterproof packing ring and two sets of waterproof packing ring and all fixes the cup joint on extrusion stem (51), and is two sets of the outer wall of waterproof packing ring all offsets with the inner chamber wall of screw thread post (6).
4. The local anesthesia apparatus of claim 2, wherein: a plurality of groups of friction convex strips are uniformly and equidistantly arranged on the annular outer wall of the pressing block (52), and an elastic cushion pad is fixed on the end face, far away from the extrusion rod (51), of the pressing block (52) through an adhesive.
5. The adjustable dosage local anesthesia apparatus of claim 1, wherein: elasticity resets piece (8) and includes two sets of sliding rings (81) and a set of reset spring (82), the both ends of reset spring (82) respectively with a set of sliding ring (81) fixed connection, two sets of sliding ring (81) all are located cylinder die cavity (7), the left side the left end of sliding ring (81) is inconsistent with the inner chamber wall of cylinder die cavity (7), the right side the right-hand member of sliding ring (81) is inconsistent with the terminal surface of slider (54).
6. The local anesthesia apparatus of claim 1, wherein: be equipped with internal thread section on the inner chamber wall of cylinder (1) just external screw thread threaded connection that is equipped with on internal thread section and the screw thread post (6) outer wall, be fixed with elasticity fastening washer (10) through gluing agent on the internal thread section inner wall of cylinder (1).
7. The adjustable dosage local anesthesia apparatus of claim 1, wherein: the needle cylinder is characterized in that two groups of finger supporting blocks (3) are symmetrically fixed on the outer wall of the needle cylinder (1), triangular reinforcing blocks (4) are installed at the right ends of the two groups of finger supporting blocks (3), the two ends of each triangular reinforcing block (4) are fixedly connected with the outer walls of the finger supporting blocks (3) and the needle cylinder (1) respectively, and anti-skidding convex strips are uniformly arranged on one end of each finger supporting block (3) opposite to the corresponding triangular reinforcing block (4) at equal intervals.
8. The operation steps of a dose-adjustable local anesthetic apparatus for anesthesia department according to claim 1, characterized in that: the steps are as follows;
adjustment of anesthetic agent uptake
The needle cylinder (1) is held by one hand to keep the needle cylinder still, the other hand holds the outer wall of the pressing block (52) by fingers and rotates the pressing block (52), the extrusion rod (51) is driven to rotate by the pressing block (52), the extrusion rod (51) drives the threaded column (6) to rotate in the inner cavity of the needle cylinder (1) through the sliding block (54) arranged on the extrusion rod (51), the extrusion rod (51) can drive the elastic sealing head (53) to do transverse linear motion, the volume of the solution cavity can be changed by referring to the scale arranged on the needle cylinder (1), and therefore the anesthetic suction quantity can be adjusted;
aspiration of anesthetic dose
The index finger and the middle finger are respectively contacted with one end of each of the two groups of finger supporting blocks (3) provided with the anti-skidding convex strips, the thumb of the index finger and the middle finger contacts with the outer end of the pressing block (52) and presses the pressing block (52), so that the elastic sealing head (53) stops pressing when being inconsistent with the inner cavity wall of the needle cylinder (1), the needle head (2) is placed in an anesthetic, the thumb slowly releases, the elastic action of the reset spring (82) is passed, the extrusion rod (51) can drive the elastic sealing head (53) to move backwards, and the anesthetic is quantitatively sucked into a solution cavity.
CN202210586848.1A 2022-05-26 2022-05-26 Adjustable-dosage local anesthesia equipment for anesthesia department Active CN114917449B (en)

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