WO2017044029A1 - Seringue dentaire et système de protection de pointe d'aiguille pour aiguille dentaire - Google Patents

Seringue dentaire et système de protection de pointe d'aiguille pour aiguille dentaire Download PDF

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Publication number
WO2017044029A1
WO2017044029A1 PCT/SE2016/050831 SE2016050831W WO2017044029A1 WO 2017044029 A1 WO2017044029 A1 WO 2017044029A1 SE 2016050831 W SE2016050831 W SE 2016050831W WO 2017044029 A1 WO2017044029 A1 WO 2017044029A1
Authority
WO
WIPO (PCT)
Prior art keywords
needle
protrusion
base plate
shield
plate
Prior art date
Application number
PCT/SE2016/050831
Other languages
English (en)
Inventor
Per Knutsson
Original Assignee
Vigmed Ab
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 Vigmed Ab filed Critical Vigmed Ab
Publication of WO2017044029A1 publication Critical patent/WO2017044029A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3202—Devices for protection of the needle before use, e.g. caps
    • 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
    • A61M5/3213—Caps placed axially onto the needle, e.g. equipped with finger protection guards
    • 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
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3273—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel freely sliding on needle shaft without connection to syringe or needle
    • 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
    • A61M5/3286—Needle tip design, e.g. for improved penetration

Definitions

  • the present invention relates to a needle tip shielding system for a dental syringe for use with a dental injection needle that prevents accidental contact of the needle tip with an animal or human, such as patients, dentists, and other medical personnel and a dental syringe and in particular a dental syringe pre-filled with an anesthetic, even more particularly, a pre-filled dental syringe with a needle shield.
  • AIDS AIDS
  • hepatitis hepatitis, etc., which can be transmitted by the exchange of bodily fluids from an infected person to another person.
  • US5603699 discloses a needle guard assembly comprising a mounting base and a jacket assembly pivotally mounted on the mounting base.
  • the jacket assembly comprises a shield member, a lever member and activating means.
  • the activating means are adapted for movement of the jacket assembly from a retracted position to a closed position around a needle.
  • Disadvantages of this needle guard assembly include its complicated construction and inherent bulkiness, being specifically unwanted in the dental industry due to the inherently limited field of vision.
  • EP0887082 describes a safety cover which is pivoting around a point near the needle hub.
  • the safety cover is folded forwards and to the side over the needle after injection and withdrawal of the needle from the skin.
  • the pivoting safety cover is provided with a locking hook mechanism that mates with the needle hub upon locking, which in turn demands the manual push of the pivoting safety cover to be sufficient to overcome the resistance of the locking hook mechanism.
  • This safety cover has the same disadvantage with regard to limiting the field of view of the dentist.
  • a glass cartridge containing an injectable anesthetic liquid is first inserted into the syringe body.
  • the needle is then attached to the syringe so that the needle penetrates a membrane on one end of the cartridge.
  • the content of the cartridge is administered to the human or animal through the hollow needle.
  • the syringe and needle have then done their duty and are withdrawn from the human or animal.
  • WO 2003/047664 discloses a dental syringe with a plunger, barrel, and a sleeve around the barrel.
  • the sleeve is longitudinally slidable between a rearmost position in which the needle is exposed for use (figure lb) and a forwards position in which the needle is covered (figure la).
  • a locking collar that rotates between two limit positions around the axis of the sleeve. Rotation of the collar to one limit position allows sliding of the sleeve between the rearmost and forwards positions.
  • the sleeve can be releasably retained in the rearmost position or releasably locked in the forwards position by rotation of the collar to the other limit position.
  • the document further discloses an anesthetic-filled cartridge in the form of a glass tube sealed with a rear end bung and a front end membrane is used with the syringe, wherein the cartridge is insertable through a side opening of the barrel (figure la) when the collar is in the forwards position.
  • the needle penetrates the front end membrane of the cartridge and the plunger is moved forward to engage the cartridge bung and inject the anesthetic.
  • US 2002/0103471 Al discloses a disposable injection syringe for use in dentistry. A cartridge containing a product to be injected is introduced into one end of the syringe body prior to use. The syringe also has a protective sheath moveable along the syringe body between two extreme positions that uncover and cover the needle tip.
  • a problem with existing dental syringes is formation of a poor seal between the needle and cartridge membrane when the needle penetrates the membrane. This results in leaking of the anesthetic into the patient's mouth during injection and / or contamination of the anesthetic which in turns leads to insufficient dosing of the anesthetic in the desired area, overdosing in the oral cavity, and infection in the patient.
  • Another problem is the fragility of the glass cartridges containing the anesthetic which causes transport and handling difficulties.
  • the present invention seeks to mitigate, alleviate, circumvent or eliminate at least one of the above identified deficiencies in the art.
  • an aspect disclosed herein relates to a needle shielding system for a dental syringe comprising: a needle having a needle tip and a needle bulge spaced apart from the needle tip; and a needle shield slidably mounted over the needle distally from the needle tip, the needle shield comprising: a base plate and at least one resilient arm extending distally from the base plate towards the needle tip, wherein the base plate or the at least one resilient arm has at least one protrusion extending laterally away from the base plate or the at least one resilient arm, wherein in use the system is dragged against another structure to move the needle shield along the needle though interaction between said structure and said at least one protrusion, until the needle shield contacts the needle bulge and the resilient arm covers the needle tip.
  • a needle shield for a dental syringe comprising: a base plate having a centrally located hole for receiving a needle therethrough and a plurality of plate protrusions at the periphery of the base plate; and two resilient arms extending distally from the base plate and ending in hooked tips, wherein each resilient arm has an arm protrusion.
  • a pre-filled dental syringe comprising: a barrel having proximal and distal ends; a plunger inserted into the proximal end of the barrel, the plunger being slidably moveable within the barrel; an anaesthetic in contact with and between the plunger and the distal end of the barrel; and a needle connected to the distal end of the barrel; wherein in use the needle is inserted into the gum or inner cheek of a patient and the plunger is depressed to inject the anesthetic though the needle and into the patient.
  • Fig. 1 illustrates a cross-sectional top view and a front view of a needle shielding system prior to use according to an embodiment of the present invention
  • Fig. 2 shows the needle shielding system of Fig. 1 after use
  • Fig. 3 is a perspective view of the needle shielding system of Fig. 2;
  • Fig. 4 illustrates a cross-sectional top view and a front view of a needle shielding system prior to use according to an alternate embodiment of the present invention
  • Fig. 5 shows the needle shielding system of Fig. 4 after activation of the needle shielding system
  • Fig. 6 is a perspective view of the needle shielding system of Fig. 5;
  • Fig. 7 illustrates two perspective views of a shield activator for use with the needle shielding system of Figs. 1 to 6;
  • Fig. 8 shows front, side, and top views of the shield activator illustrated in
  • Fig. 9 illustrates a cross-sectional top view and a front view of a dental syringe pre-filled with anesthetic in accordance with one embodiment of the invention
  • Fig. 10 shows a cross-sectional top view and a front view of a dental syringe pre-filled with anesthetic and having a needle shielding system according to another embodiment of the invention
  • Figures 1 to 3 illustrate a needle shielding system for a dental syringe 100 for use with a dental needle hub 104 while figures 4 to 6 illustrate a needle shielding system for a dental syringe 200 for use with a syringe 204.
  • the needle hub 104 may be provided with a needle 300 extending distally away from the needle hub 104 with a needle tip 304 at the distal end.
  • the needle hub 104 may further have a needle hub cavity 105, opening up proximally, for receiving a top portion of a syringe with a medicament ampoule receptacle.
  • the needle 300 continues proximally through the hub cavity 105 and proximally beyond the proximal end of the needle hub 104.
  • the proximal end of the needle 300 may also be provided with a needle tip 304 for facilitating penetration of the medicament ampoule, such as a medicament ampoule carrying an anesthetic therein.
  • the inner wall of the needle hub 104 may be provided with threads 106, for facilitating mounting of the needle hub 104 on a syringe with a medicament ampoule receptacle.
  • the syringe 204 may be a pre-filled syringe, such as a syringe pre-filled with an anesthetic.
  • the needle shielding systems 100, 200 are identical in structure and function.
  • Needle shielding systems for a dental syringe 100, 200 have a needle 300 and a needle shield 400.
  • Needle 300 has a needle tip 304 and a needle bulge 308 located on the shaft of the needle away from the needle tip.
  • Needle shield 400 has a base plate 404 and a plate shaft 412 with a hole 408 extending through the shaft 412 for receiving the needle 300 through the centre of the plate 404.
  • the base plate 404 also has at least one plate protrusion 428 at the periphery of the plate as shown in figures 3 and 6.
  • a plurality of plate protrusions 428 may be evenly spread around the periphery of the base plate 404.
  • the plate protusions 428 need not be shaped as truncated triangles as illustrated.
  • the plate protusions 428 could be rectangular in shape. In use the plate protrusions 428 facilitate easier activation of the shield 400 following withdrawal of the needle from the patient as will be described below.
  • Two resilient arms 416 extend away from the base plate 404 in the same general direction as the longitudinal axis of the needle 300. Each arm 416 ends in hooked tip 420. At least one arm protrusion 424 is illustrated on each resilient arm 416. Although not shown, a plurality of arm protrusions 424 may be present on each resilient arm 416 such as 2, 3, or 4 arm protrusions 424 spaced apart from each other. Like the plate protrusions 428, the arm protrusions 424 allow for easier activation of the shield 400 following withdrawal of the needle from a patient.
  • FIGS. 1 and 4 show the hooked tips 420 and the arms 416 urged apart from each other into a tension state in which free passage of the needle 300 is possible through hole 408 and the hooked tips 420 are in contact with the surface of the needle 300.
  • Figures 2 and 5 show the resilient arms 416 in a resting state in which the needle 300 is enclosed within the needle shield 400.
  • the needle shield 400 Prior to use the needle shield 400 is slidably mounted on the needle 300 through the hole 408 so that the needle shield 400 is in the tension state referred to above with respect to figures 1 and 4. The dentist then inserts the needle 300 into the gum or inner cheek of a patient and injects an anesthetic. The needle is then
  • the dentist drags the system against a nearby structure to activate the shielding effect.
  • the plate protrusion(s) 428 or the arm protrusion(s) 424 interact with the nearby structure to move, such as slide, the needle shield 400 along the needle shaft towards tip 304.
  • Suitable nearby structures include the arm of the dental chair, the edge of the tray containing the dentist's tools, or a dental brick.
  • An alternative suitable structure is shield activator 500 depicted in figures 7 and 8.
  • Shield activator 500 has an activation plate 504, a clip 512, and a shaft 508 extending between the activation plate 504 and the clip 512.
  • the clip 512 is configured to snap fit onto a rod 516 or other similar supporting equipment in the immediate vicinity of the dentist.
  • Shield activator 500 may be made of plastic or metal. In use the plate protrusion(s) 428 and / or the arm protrusion(s) 424 of the systems 100, 200 interact with an edge of the activation plate 504 to move the needle shield 400 along the needle shaft towards tip 304.
  • the needle shield 400 can then move no further along the needle shaft and the dentist, patient, and associated personnel are protected from accidental contact with the needle tip.
  • the needle shield 400 may be made of a plastic material having a suitable combination of tenacity, rigidity, fatigue resistance, elasticity, and creep deformation resistance.
  • a suitable plastic material has a high creep deformation resistance, i.e. it has a low tendency to slowly move or deform permanently under the influence of an applied external pressure.
  • needle shield 400 may be stored in an assembled ready mode (tension state) for a prolonged time without extensive creep deformation of the arms 416.
  • a plastic needle shield 400 may be colored for ease of recognition.
  • the needle shield 400 may be a monolithic homogenous injection molded plastic needle shield.
  • An advantage of a monolithic needle shield 400 is a lower production cost in comparison to other devices made of more than one part requiring subsequent assembly.
  • the needle shield 400 may be made of a thermoplastic polymer.
  • the thermoplastic polymer could be crystalline, amorphous, or comprising crystalline and amorphous alternating regions.
  • a creep resistance of the thermoplastic polymer of choice may be at least 1200 MPa (ISO 527, ASTM D638).
  • Suitable plastics for the needle shield 400 may be selected from the group comprising of polyoxymethylene (POM), polybutylen terephthalate (PBTP), polymethyl methacrylate (PMMA), acrylonitrile butadiene styrene (ABS), styrene acrylonitrile (SAN), acrylonitrile styrene acrylate (ASA), polystyrene (PS), styrene butadiene (SB), liquid crystal polymer (LCP), polyamide (PA), polysulfone (PSU), polyetherimide (PEI), polycarbonate (PC), polyphenylene oxide (PPO), and/or PPO/SB, and co- and terpolymers thereof.
  • POM polyoxymethylene
  • PBTP polybutylen terephthalate
  • PMMA polymethyl methacrylate
  • ABS acrylonitrile butadiene styrene
  • ABS styrene acrylonitrile
  • Figure 9 illustrates a pre-filled dental syringe 100 that has a barrel 104, plunger 108, anesthetic 112, and a needle 300.
  • the plunger 108 is inserted into the proximal end of the barrel 104 and is slidably movable within the barrel 104 while maintaining a tight fit against the barrel's walls.
  • the solution of the anesthetic 112 is contained within the barrel 104 in between the plunger 108 and the distal end of the barrel 104.
  • the anesthetic 112 is in contact with the walls of the barrel 104 and the end of the plunger 108.
  • the needle 300 is connected to the distal end of the barrel 104.
  • a needle cap (not shown) is placed over the needle 300 to seal the anesthetic inside the syringe.
  • This arrangement allows for reduced leakage of the anesthetic from the syringe into the mouth of the patient during use and decreases the chance of microbial contamination of the anesthetic.
  • the need for insertion of a separate cartridge containing the anesthetic is also eliminated.
  • Another advantage of pre-filled syringes over cartridge syringes is that aspiration may be controlled through piston displacement. In use the needle 300 is inserted into the gum or inner cheek of the patient and the plunger 108 is depressed to inject the anesthetic 112 though the needle 300 and into the patient. The dental syringe is then disposed of appropriately.
  • the syringe may be made of glass or plastic although plastic is preferred given the single use and disposable nature of the syringe.
  • Any suitable dental anesthetic 112 may be used in the dental syringe 100.
  • the dental anesthetic 112 may be selected from the group consisting of lidocaine (xylocaine or lignocaine), procaine
  • the solution of the anesthetic 112 may contain additional ingredients such as vasoconstrictors (e.g. epinephrine), sodium hydroxide, and / or sodium chloride.
  • vasoconstrictors e.g. epinephrine
  • sodium hydroxide e.g. sodium hydroxide
  • sodium chloride e.g. sodium bicarbonate
  • Figures 4 to 6 and figure 10 show an another pre-filled dental syringe 200 which includes a needle shielding system for preventing accidental contact of the needle tip with the patient or the dentist thereby reducing the risk of spreading disease.
  • the dental syringe 200 has a barrel 204, plunger 208, anesthetic 212, and a needle 300.
  • the plunger 208 is slidably moveable within the barrel 204.
  • the solution of the anesthetic 212 is again contained within the barrel 204 in between the plunger 208 and the distal end of the barrel 204.
  • the needle 300 is connected to the distal end of the barrel 204 and a needle cap (not shown) is placed over the needle 300.
  • the needle shielding system is made up of a needle shield 400 and a needle bulge 308 located on the shaft of the needle 300 away from the needle tip 304.
  • Needle shield 400 has a base plate 404 and a plate shaft 412 with a hole 408 extending through the shaft 412 for receiving the needle 300 through the centre of the plate 404.
  • the base plate 404 also has at least one plate protrusion 428 at the periphery of the plate as shown in figure 6.
  • a plurality of plate protrusions 428 may be evenly spread around the periphery of the base plate 404.
  • the plate protusions 428 need not be shaped as truncated triangles as illustrated. For example, the plate protusions 428 could be rectangular in shape.
  • the plate protrusions 428 facilitate easier activation of the shield 400 following withdrawal of the needle from the patient as will be described below.
  • Two resilient arms 416 extend away from the base plate 404 in the same general direction as the longitudinal axis of the needle 300. Each arm 416 ends in hooked tip 420. At least one arm protrusion 424 is illustrated on each resilient arm 416. Although not shown, a plurality of arm protrusions 424 may be present on each resilient arm 416 such as 2, 3, or 4 arm protrusions 424 spaced apart from each other. Like the plate protrusions 428, the arm protrusions 424 allow for easier activation of the shield 400 following withdrawal of the needle from a patient. This will become clearer from the description below.
  • the needle shield 400 to have both plate protrusions 428 and arm protrusions 424.
  • Sufficient shielding of the needle tip 304 is attainable from the presence of either at least one plate protrusion 428 or at least one arm protrusion 424.
  • Figures 10 and 4 show the hooked tips 420 and the arms 416 urged apart from each other into a tension state in which free passage of the needle 300 is possible through hole 408 and the hooked tips 420 are in contact with the surface of the needle 300.
  • Figures 3 and 6 show the resilient arms 416 in a resting state in which the needle tip 304 is enclosed within the needle shield 400.
  • the needle shield 400 Prior to use of the dental syringe 200, such as during manufacture of the syringe 200, the needle shield 400 is slidably mounted on the needle 300 through the hole 408 so that the needle shield 400 is in the tension state referred to above with respect to figures 10 and 4.
  • the dentist then inserts the needle 300 into the gum or inner cheek of a patient and depresses the plunger 208 to inject the anesthetic 212.
  • the needle 300 is then withdrawn from the gum or inner cheek and moved away from the mouth of the patient.
  • the dentist drags the syringe against a nearby structure to activate the shielding effect. As the syringe 200 is dragged, the plate protrusion(s) 428 or the arm protrusion(s) 424 interact with the nearby structure to move, such as slide, the needle shield 400 along the needle shaft towards tip 304.
  • Suitable nearby structures include the arm of the dental chair, the edge of the tray containing the dentist's tools, or a dental brick.
  • An alternative suitable structure is shield activator 500 depicted in figures 7 and 8.
  • Shield activator 500 has an activation plate 504, a clip 512, and a shaft 508 extending between the activation plate 504 and the clip 512.
  • the clip 512 is configured to snap fit onto a rod 516 or other similar supporting equipment in the vicinity of the dentist.
  • Shield activator 500 may be made of plastic or metal.
  • the plate protrusion(s) 428 and / or the arm protrusion(s) 424 on the needle shield 400 interact with an edge of the activation plate 504 to move, such as slide, the needle shield 400 along the needle shaft towards tip 304.
  • the arms 416 snap centrally in front of the needle tip.
  • the plate shaft 412 then contacts needle bulge 308 as shown in figure 5.
  • the needle shield 400 can then move no further along the needle shaft and the dentist, patient, and associated personnel are protected from accidental contact with the needle tip 304.

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

Abstract

L'invention concerne des systèmes de protection d'aiguille pour une seringue dentaire (100, 200). Le système de protection d'aiguille (100, 200) comprend une aiguille (300) et un protecteur d'aiguille (400). L'aiguille (300) a une pointe d'aiguille (304) et un renflement d'aiguille (308) espacé de la pointe d'aiguille (304). Le protecteur d'aiguille (400) est monté coulissant sur l'aiguille (300) de manière distale par rapport à la pointe d'aiguille (304). Le protecteur d'aiguille (400) comprend une plaque de base (404) et au moins un bras élastique (416) s'étendant de manière distale de la plaque de base (404) vers la pointe d'aiguille (304), la plaque de base (404) ou l'au moins un bras élastique (416) ayant au moins une saillie (424, 428) s'étendant latéralement à l'opposé de la plaque de base (404) ou l'au moins un bras élastique (416). En utilisation, le système (100, 200) est traîné contre une autre structure pour déplacer le protecteur d'aiguille (400) le long de l'aiguille (300) par l'intermédiaire d'une interaction entre ladite structure et ladite au moins une saillie (424, 428), jusqu'à ce que le protecteur d'aiguille (400) entre en contact avec le renflement d'aiguille (308) et le bras élastique (416) recouvre la pointe d'aiguille (304). Les seringues (100, 200) comprennent généralement un tube (104, 204), un piston (108, 208), un anesthésique (112, 212) et une aiguille (300). Le tube (104, 204) comporte des extrémités proximale et distale. Le piston (108, 208) est introduit dans l'extrémité proximale du tube (104, 204) et est mobile de manière coulissante à l'intérieur du tube (104, 204). L'anesthésique (112, 212) est en contact avec le piston (108, 208) et l'extrémité distale du tube (104, 204) et entre ces derniers. L'aiguille (300) est reliée à l'extrémité distale du tube (104, 204). En utilisation, l'aiguille (300) est introduite dans la gencive ou joue interne d'un patient, et le piston (108, 208) est enfoncé pour injecter l'anesthésique (112, 212) à travers l'aiguille (300) et dans le patient. Les seringues dentaires (100, 200) peuvent également comprendre un protecteur d'aiguille (400) monté coulissant sur l'aiguille (300).
PCT/SE2016/050831 2015-09-10 2016-09-06 Seringue dentaire et système de protection de pointe d'aiguille pour aiguille dentaire WO2017044029A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE1551156-1 2015-09-10
SE1551157-9 2015-09-10
SE1551157 2015-09-10
SE1551156 2015-09-10

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN115591041A (zh) * 2022-12-12 2023-01-13 北京深纳普思人工智能技术有限公司（Cn） 注针装置和给药系统

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Publication number Priority date Publication date Assignee Title
US6203527B1 (en) * 1994-03-29 2001-03-20 Filiberto P. Zadini Bi-directional clamping guard for needle stick protection
WO2003009886A2 (fr) * 2001-07-25 2003-02-06 Injectimed, Inc. Procede et appareil destines a indiquer ou a couvrir un site de perforation percutanee
US6616630B1 (en) * 1997-08-20 2003-09-09 B. Braun Melsungen A.G. Spring clip safety IV catheter
US20070027429A1 (en) * 2001-07-25 2007-02-01 Kuracina Thomas C Method and apparatus for indicating or covering a percutaneous puncture site
WO2011019316A1 (fr) * 2009-08-13 2011-02-17 Vigmed Ab Dispositif de protection de la pointe d’une aiguille de cathéter
WO2011129753A1 (fr) * 2010-04-13 2011-10-20 Vigmed Ab Dispositif polymère de protection de pointe d'aiguille de cathéter
EP2517751A1 (fr) * 2011-04-27 2012-10-31 Tyco Healthcare Group LP Ensembles de cathéter IV de sécurité
WO2014007748A1 (fr) * 2012-07-04 2014-01-09 Vigmed Ab Protecteur d'aiguille pour ensemble aiguille à injection, et ensemble aiguille à injection

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6203527B1 (en) * 1994-03-29 2001-03-20 Filiberto P. Zadini Bi-directional clamping guard for needle stick protection
US6616630B1 (en) * 1997-08-20 2003-09-09 B. Braun Melsungen A.G. Spring clip safety IV catheter
WO2003009886A2 (fr) * 2001-07-25 2003-02-06 Injectimed, Inc. Procede et appareil destines a indiquer ou a couvrir un site de perforation percutanee
US20070027429A1 (en) * 2001-07-25 2007-02-01 Kuracina Thomas C Method and apparatus for indicating or covering a percutaneous puncture site
WO2011019316A1 (fr) * 2009-08-13 2011-02-17 Vigmed Ab Dispositif de protection de la pointe d’une aiguille de cathéter
WO2011129753A1 (fr) * 2010-04-13 2011-10-20 Vigmed Ab Dispositif polymère de protection de pointe d'aiguille de cathéter
EP2517751A1 (fr) * 2011-04-27 2012-10-31 Tyco Healthcare Group LP Ensembles de cathéter IV de sécurité
WO2014007748A1 (fr) * 2012-07-04 2014-01-09 Vigmed Ab Protecteur d'aiguille pour ensemble aiguille à injection, et ensemble aiguille à injection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115591041A (zh) * 2022-12-12 2023-01-13 北京深纳普思人工智能技术有限公司（Cn） 注针装置和给药系统

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