WO2014080417A2 - Seringue de sécurité auto-rétractable (srs) à usage unique - Google Patents

Seringue de sécurité auto-rétractable (srs) à usage unique Download PDF

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Publication number
WO2014080417A2
WO2014080417A2 PCT/IN2013/000622 IN2013000622W WO2014080417A2 WO 2014080417 A2 WO2014080417 A2 WO 2014080417A2 IN 2013000622 W IN2013000622 W IN 2013000622W WO 2014080417 A2 WO2014080417 A2 WO 2014080417A2
Authority
WO
WIPO (PCT)
Prior art keywords
barrel
plunger
needle
finger
outermost
Prior art date
Application number
PCT/IN2013/000622
Other languages
English (en)
Other versions
WO2014080417A3 (fr
Inventor
Jai Hind RATHORE
Bharati RATHORE
Pratibha RATHORE
Neelam RATHORE
Bhuvan Chandra RATHORE
Original Assignee
Rathore Jai Hind
Rathore Bharati
Rathore Pratibha
Rathore Neelam
Rathore Bhuvan Chandra
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 Rathore Jai Hind, Rathore Bharati, Rathore Pratibha, Rathore Neelam, Rathore Bhuvan Chandra filed Critical Rathore Jai Hind
Publication of WO2014080417A2 publication Critical patent/WO2014080417A2/fr
Publication of WO2014080417A3 publication Critical patent/WO2014080417A3/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • A61M5/3234—Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • A61M5/3234—Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user
    • A61M2005/3235—Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user triggered by radial deflection of the anchoring parts between needle mount and syringe barrel or needle housing, e.g. spreading of needle mount retaining hooks having slanted surfaces by engagement with correspondingly shaped surfaces on the piston at the end of an injection stroke
    • A61M2005/3238—Trigger provided at the proximal end, i.e. syringe end opposite to needle mounting end
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/50—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
    • A61M5/508—Means for preventing re-use by disrupting the piston seal, e.g. by puncturing

Definitions

  • the present invention relates to a safety syringe having an auto retractable needle for use in the medical or dental profession or in personal drug administration so that the physicians, surgeons or other needle operators may be protected from the needle-stick injury during its use.
  • the invention in particular, relates to an assembly of the safety syringe which is simple and easy in handling, in which the hypodermic needle retracts itself automatically by virtue of self generated vacuum and encapsulate within the barrel as soon as the last drop is injected in the body of patient. The syringe thereafter becomes finally locked to become non-reusable.
  • the handling of syringe does not require any special training to the operators. It is simple in manufacture.
  • syringes are simple axial piston pumps with a plunger that fits tightly in a cylindrical barrel. The plunger can be pulled and pushed along inside the barrel, thereby creating a pressure gradient. Additionally, many syringes carry a sharp and penetrating hollow needle that is intended to puncture the skin, mucous membrane and internal organs of humans or animals for injection or removal of fluids, aerosols, or particulate suspensions.
  • the plunger of the syringe needs a hard push beyond the normal pressure. Therefore, if the needle of the syringe is drawn from the patient before the auto retraction is activated then it matters little how violent the initial kick-back is. On the other hand, if the auto retraction of the needle in the syringe is activated whilst the needle is in the body of the patient, either accidentally or deliberately, it may be quite uncomfortable or cause undesirable damage to the tissues in which the needle is inserted. There is another kind of syringe in which the needle is retracted into the barrel under the action of spring after injection.
  • the needle is retracted too fast which may result in bursting out of blood under the body pressure from the punctured hole on the body, which further brings secondary cross infection.
  • the conventional syringes also lack in full-proof locking arrangement as well as effective retraction mechanism to prevent and restrict further use of syringes once used.
  • An object of the present subject matter is to provide a self-retractable safety syringe.
  • Another object of the present subject matter is to provide a self- retractable safety syringe for single use.
  • Another object of the present subject matter is to provide a plunger assembly that includes a plunger barrel and a plunger plug.
  • Another object of the present subject matter is to provide a plunger assembly ⁇ that includes plunger plug to be inserted in plunger barrel.
  • Another object of the present subject matter is to provide the plunger plug with a centrally positioned longitudinally furrowed knob at proximal end.
  • Another object of the present subject matter is to provide a needle carrier assembly to hold the hypodermic needle. Another object of the present subject matter is to provide an O-ring to hold the needle carrier inside the outermost barrel and to actuate the retraction mechanism in order to dislodge the needle carrier along with hypodermic needle
  • Another object of the present subject matter is to complete lock the plunger barrel inside the outermost barrel after usage.
  • Another object of the present subject matter is to provide the plunger barrel with a piston seal holder structured at the proximal end for holding a piston seal
  • Another object of the present subject matter is to provide the plunger barrel at proximal end with a pair of diametrically opposite, face to face positioned, parallel finger locks opening at proximal end, bearing outwardly protruded teeth T- l , T-3 and inwardly protruded teeth T-2, T-4 to hold the plunger plug firmly inside the outermost plunger barrel and also to release the plunger plug after completion of injection process.
  • Another object of the present subject matter is to provide the plunger barrel with a pair of diametrically opposite, face to face positioned, parallel finger locks opening at distal end, positioned at the proximal end of the plunger barrel where the two diameters of the plunger barrel perpendicularly bisect each other, to retain the plunger plug inside the outermost plunger barrel and to prevent the removal of plunger barrel from the outermost barrel.
  • Another object of the present subject matter is to provide a needle carrier hub provided with a pair of outwardly protruded finger locks to centrally as well as axially retain the hypodermic needle.
  • Another object of the present subject matter is to provide a needle carrier hub provided with outwardly protruded flanges to open the finger locks of the needle carrier hub in order to actuate the retraction mechanism.
  • Another object of the present subject matter is to provide a needle carrier hub with a spring to retract the hypodermic needle in backward direction when the finger locks of the needle carrier hub open and release the needle due to the movement of elastic O-ring in forward direction to push the flanges of needle carrier assembly.
  • the subject matter described herein generally relates to a safety syringe having an auto retractable needle for use in medical or dental profession or in personal drug administration so that the physicians, surgeons or other needle operators may be protected from needle-stick injuries after its use. Therefore, the invention, in particular, relates to an assembly of the safety syringe which facilitates simple operation and easy handling, in which the hypodermic needle retracts itself automatically by virtue of self generated vacuum and encapsulates within the barrel as soon as the last drop is injected in the body of patient. The syringe thereafter becomes automatically locked to become non-reusable. The handling of syringe does not require any special training to the operators. It is also simple in manufacture.
  • Fig. 1 illustrates a line diagram of a plunger barrel and plunger plug of a self-retractable syringe.
  • Fig. 1(a) illustrates a line diagram of finger locks in plunger barrel of a self-retractable safety syringe.
  • Fig. 2 illustrates a line diagram of a outermost barrel of a self-retractable safety syringe.
  • Fig. 3 illustrates a line diagram of needle carrier assembly and its parts of a self- retractable safety syringe.
  • Fig. 4 illustrates a line diagram of a needle carrier assembly housed inside the conical jacket of outermost barrel of a self-retractable safety syringe.
  • Fig. 5 illustrates a line diagram of a complete assembly for a self-retractable safety syringe.
  • Fig. 6 illustrates filling of medicinal dosage in a self-retractable safety syringe.
  • Fig. 7 illustrates a push of the plunger within the outermost barrel in a self-retractable safety syringe.
  • Fig. 8 illustrates opening of needle carrier locks in a self-retractable safety syringe.
  • Fig. 9 illustrates retraction and encapsulation of needle assembly inside the outermost barrel and a complete lock of a plunger barrel in self-retractable safety syringe.
  • the safety syringe includes a syringe barrel and a plunger slidably located therein.
  • the safety syringe 100 is structurally constructed with a plunger barrel 102, a plunger plug 103, a needle carrier 114 and an outermost barrel 108.
  • the plunger barrel 102 is a uniformly elongated hollow cylindrical tubular body provided with a thumb rest 120 at its distal end D and a piston seal holder 132 at the proximal end for holding a piston seal 130, in an embodiment of the present subject matter.
  • the plunger barrel 102 is designed with at least one oppositely positioned, outwardly protruded finger lock 124, opening and directing towards distal end D.
  • the finger lock 124 is designed and shaped by cutting the wall of plunger barrel 102.
  • the finger lock 124 completely locks the plunger barrel 102 inside the outermost barrel 108 by seating conveniently in the inner circumferential conical groove 146 provided at the distal end D of the outermost barrel, after the completion of injection process.
  • the plunger barrel 102 is designed with the provision of at least one face to face oppositely positioned parallel pair of finger locks (126 and 128) opening and directing towards the proximal end of the plunger barrel 102.
  • tooth T-l & T-3 of finger locks 126 & 128 respectively are protruded outwardly in normal state.
  • the proximal surface of tooth T-l and T-3 is designed perpendicular to the inner surface of barrel 102, whereas the outwardly distal surface of tooth T-l and T-3 is obliquely inclined to the distal end, finally constituting an oblique notch, which may conveniently seat inside the inner circumferential conical groove 148 provided in outermost barrel 108.
  • the inner teeth T-2 and T-4 are designed by cutting the inner surface of plunger barrel 102 in obtuse angled shape in such a manner that the teeth T-2 and T-4 remain in the level of inner surface of plunger barrel in normal state, but may seat conveniently into the outer circumferential groove 138 provided in plunger plug 103, when the teeth T-l and T-3 are pressed in inward direction to bring them in the level of outer surface of plunger barrel.
  • the thickness of each of the tooth is approximately double than the thickness of the walls of plunger barrel 102.
  • an outwardly protruded, diametrically oppositely face to face positioned pair of finger lock 125 and 127 opening and directing to distal end has been provided at the proximal end of the plunger barrel 102.
  • This pair of finger locks 125 and 127 is positioned diametrically opposite to the pair of finger locks 126 and 128 at the angle where two diameters of plunger barrel 102 perpendicularly bisect together, as shown in Fig. 1(a).
  • the outwardly protruded finger locks 125 and 127 prevent the plunger barrel 102 to be completely removed out from the outermost plunger barrel 108 by seating conveniently within the inner circumferential conical groove 146 provided at the distal end of outermost barrel 108.
  • FIG. 1(b) illustrates the plunger plug 103 in which the outer diameter is equal to the inner diameter of outermost barrel 102 in an embodiment of the present subject matter.
  • the plunger plug 103 is provided with a thickness having uniform circumferential groove 138.
  • the plunger plug 103 is centrally designed with a longitudinally furrowed knob 134 at its proximal end.
  • the furrowed knob 134 is positioned parallel to the outermost barrel 102.
  • the furrowed knob 103 is advantageously provided with a lock element 136 at proximal end.
  • this plunger plug 103 is inserted in the outer plunger barrel 102 through its proximal end, positioning the circumferential groove 138 of plunger plug 103 in alignment of inwardly protruded tooth (T-2 and T-4) of the finger locks 126 and 128 as shown in FIG. 5.
  • the safety syringe 100 also includes a conical needle carrier assembly 114, as shown in FIG. 3(c), comprising a needle carrier hub 112 and a hypodermic needle 110, as further shown in Fig.3(a) and 3(b) respectively.
  • the needle carrier hub 112 is provided with a longitudinal central axial passage at its centre which is parallel to the plunger barrel 102, in an embodiment of the present subject matter.
  • the axial passage of the needle carrier hub has been provided with three different diameters to hold the hypodermic needle 110 along with spring 184.
  • the inner diameter of axial passage of the needle carrier hub at distal end is equal to the outer surface of the proximal portion of the hypodermic needle seat, whereas the inner diameter of axial passage at proximal end is equal to the outer diameter of hypodermic needle.
  • the different inner diameters in axial passage of the needle carrier hub 112 constitute two collars 174 and 176 between the distal and middle as well as middle and proximal portions respectively.
  • the needle carrier hub 112 is further provided with two face to face oppositely positioned finger locks 166, opening at distal end and customised , into outwardly extended flanges 168 directing to distal end of the needle carrier hub.
  • the needle carrier hub is also provided with an outer circumferential ridge at its proximal end to fixedly hold the needle carrier assembly 114 in outermost barrel by seating conveniently in the inner conical groove 150 provided at the proximal end of the outermost barrel.
  • the straight, hollow elongated hypodermic needle 110 has been provided with a needle seat at the distal end.
  • the distal end of the needle seat is customised into a collar 154 having its width and outer diameter respectively equal to the thickness and inner diameter of the elastic O- ring 182.
  • the proximal portion of needle seat is provided with a uniform circumferential conical groove 156, whose proximal end is perpendicular to the outer surface of needle seat, whereas at distal end the groove 156 is inclined to the distal end to constitute a convenient seat for the teeth of finger lock 170 provided at the inner surface of finger lock.
  • the hypodermic needle is provided with a radial cavity 160 around the needle to hold the spring 184.
  • hollow hypodermic needle 151 opens at both ends, which is modified into a cavity at the distal end having a lock element 152.
  • the inner diameter of the cavity 151 is equal to the outer diameter of the knob 134 which is centrally provided at the proximal surface of the plunger plug 103.
  • the hollow needle 151 is advantageously encapsulated in a removable needle cover 154.
  • the conical needle carrier hub 1 14 is also structured with an elastic O-ring 182 having inner diameter and thickness equal to the outer diameter and thickness of distal portion of conical needle carrier 114.
  • the outer diameter of O-ring 182 is equal to the slightly enlarged inner proximal diameter of the outer barrel 108, wherein the outer proximal circumferential edge of O- ring 182 is round in shape.
  • hypodermic needle 110 When the proximal end of hypodermic needle 110 along with spring 180 is inserted into the needle carrier hub 112 through its distal end, the finger lock 166 is expanded in outward direction and the conical notch 170 clicks lock the hypodermic needle inside the needle carrier hub 111, by conveniently seating into the outer circumferential conical groove 156. The compressed spring 184 is held encapsulated within the radial cavity 180.
  • the elastic O-ring 182 is fitted around the distal collar 154 of the needle carrier hub 112 keeping rounded outer edge surface of O-ring 182 in proximal side in such a manner that the proximal surface of the O-ring rests at the distal surface of the flange 168 of the finger lock 166 to constitute complete needle carrier assembly 114, as shown in Fig. 3(c).
  • FIG. 2 shows the outermost barrel 108 which is a uniformly elongated hollow cylindrical tubular body, provided with a finger rest 140, a uniform obtuse-angled L-shaped inner circumferential conical groove 146 at the distal end and another inner circumferential conical groove 150 at the proximal end of the barrel 108 in an embodiment of the present subject matter.
  • the barrel 108 is customised into a conical jacket opening at the proximal end to hold the needle carrier assembly 114 along with hypodermic needle 110.
  • the inner diameter of the outermost barrel 108 is equal to the outer diameter of the plunger barrel 102, which slightly enlarges at the proximal portion of the barrel constituting a collar 144 to fixedly retain the needle carrier assembly with the help of elastic O-ring 182.
  • An inner circumferential conical groove 148 is provided before the distal end of the collar 144 formed between the two inner diameters inside the outermost barrel 108 to allow the expansion of finger lock 126 and 128 in outward direction so that the plunger plug 103 may be set free to release freely.
  • the conical groove 146 is inclined obliquely to the proximal end of the barrel 108 to facilitate sliding of an elastic O-ring 182 and snap-lock the plunger assembly 114 inside the outermost barrel 108 after the finger lock 124 becomes in normal state with the completion of the injection in an embodiment of the present subject matter.
  • the rounded outer edge of O-ring easily crosses over the inner circumferential grooves 146 and 148 of the outermost barrel 108 and conveniently seats within the slightly enlarged proximal portion of the outermost barrel constituting conical jacket 142.
  • the needle is securely encapsulated in a needle cover.
  • this plunger plug 103 is inserted in the outer plunger barrel 102 through its proximal end, positioning the circumferential groove 138 of plunger plug 103 in alignment of inwardly protruded tooth (T-2 and T-4) of the finger locks 126 and 128 as shown in FIG. 5.
  • the proximal end of the plunger barrel 102 containing the plunger plug 103 is now inserted into the outermost barrel 108 through its distal end.
  • the outwardly protruded teeth T-1 and T-3 are pressed in inward direction to become in level of the outer surface of the plunger barrel 102, consequently, the inwardly protruded teeth T-2 and T-4, which are in the level of inner surface of the plunger barrel in normal state, are pressed and protrude inwardly to seat conveniently inside the outer circumferential groove 138 and secure hold the plunger plug 103 firmly at the proximal end of the plunger barrel 103, to constitute the complete syringe assembly 100, as shown in Fig. 5.
  • the user While working with the syringe, the user has only option to pull out the inner plunger barrel 102 by holding the safety syringe 100 with the help of the thumb rest 122 and the finger rest 140, because the outwardly protruded finger locks 125 and 127 at the proximal end of the plunger barrel 102 prevent the plunger barrel to be completely removed from the outermost barrel by expanding in outward direction and seating conveniently inside the inner circumferential groove 146.
  • the medicinal dosage to inject into the body of the patient may be sucked into the outermost barrel 108 by pulling the plunger assembly 102 in backward direction as usual, as shown in another embodiment of FIG. 6. While injecting the medicinal dose with the safety syringe 100 into the body of patient according to the present subject matter, in final stage, the proximal end of barrel 102 pushes the O-ring 182 in forward direction to dislodge the needle carrier 114, when injection process is likely to complete.
  • the forward movement of plunger assembly 102 makes the furrowed knob 134 of the plunger plug 103 to insert inside the cavity 151 of the needle carrier 114 and gets snap-locked therein the cavity 151 as soon as the last drop of medicine is injected in the body of patient.
  • the finger lock 124 provided at the distal end of the plunger slips into the inner circumferential conical groove 146 of the outermost barrel, which expands in outward direction into the space provided by the groove 146 to restore its normal state and seats therein conveniently to completely lock the plunger barrel inside the outermost barrel, as shown in Fig. 9.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (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

La présente invention concerne une seringue de sécurité auto-rétractable (100) à usage unique comprenant un ensemble piston comprenant un cylindre à piston (102) et un bouchon de piston (103), un ensemble support d'aiguille (114) et un cylindre extérieur (108). Le bouchon de piston (103) retient un bouton axial strié à position centrale (134) logé dans le cylindre à piston (102) au niveau de l'extrémité proximale et maintenu fermement par les dents internes T-2 et T-4 de verrous à doigt (126) et (128), respectivement. Un ensemble support d'aiguille (114) est logé dans une gaine conique du cylindre extérieur (108) retenant une aiguille (110) ainsi qu'un ressort comprimé (184). L'aiguille est verrouillée à l'intérieur de l'ensemble support d'aiguille à l'aide du verrou à doigt (166) pourvu d'une bride faisant saillie vers l'extérieur (168). La bride (168) est mise en contact avec un joint torique élastique coulissant (182) retenant l'ensemble support d'aiguille à l'intérieur de la gaine conique. Au terme du procédé d'injection, le bouton strié s'insère dans la cavité distale de l'aiguille (110) pour verrouiller l'aiguille avec le bouchon. Lorsque le joint torique élastique coulisse vers l'avant en raison du mouvement axial du cylindre à piston vers l'avant, le joint torique pousse la bride (168) du verrou à doigt (166) pour déverrouiller le verrou. Au même moment, les dents externes T-1 et T-3 des verrous à doigt (126) et (128) s'alignent respectivement avec la rainure conique circonférentielle interne (148) du cylindre extérieur (108) et reprennent leur état normal en s'étendant vers l'extérieur pour occuper l'espace externe fourni par la rainure (148). Cela amène les dents internes respectives T-2 et T-4 des verrous à doigt (126) et (128) à se rétracter et à libérer le bouchon de piston (103) en raison de l'expansion des verrous vers l'extérieur. Par conséquent, le bouchon de piston (103) retenant l'aiguille (110) se déplace en douceur vers l'arrière en raison de la pression exercée par l'expansion du ressort (184) vers l'arrière. Simultanément, le verrou à doigt (124) disposé au niveau de l'extrémité distale du cylindre à piston (102) glisse dans la rainure conique circonférentielle interne (146) et verrouille par encliquetage le cylindre à piston (102) à l'intérieur du cylindre extérieur (108) pour verrouiller complètement l'ensemble seringue avec l'aiguille encapsulée à l'intérieur du cylindre à piston. Les verrous à doigt faisant saillie vers l'extérieur et orientés de manière distale (125) et (127) disposés au niveau de l'extrémité proximale du cylindre à piston empêchent le retrait du cylindre à piston (102) du cylindre extérieur (108).
PCT/IN2013/000622 2012-11-23 2013-10-15 Seringue de sécurité auto-rétractable (srs) à usage unique WO2014080417A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN3601/DEL/2012 2012-11-23
IN3601DE2012 2012-11-23

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WO2014080417A2 true WO2014080417A2 (fr) 2014-05-30
WO2014080417A3 WO2014080417A3 (fr) 2014-07-17

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109893717A (zh) * 2019-04-09 2019-06-18 西安交通大学医学院第一附属医院 一种静脉输液港用无损伤针组
CN112451785A (zh) * 2014-10-28 2021-03-09 拜耳医药保健有限公司 自定向压力护套以及压力护套到注射器的接口
AU2020200304A1 (en) * 2019-12-16 2021-07-01 Guangdong Hongshan Medical Device Technology Co., Ltd Novel composite safety self-destructing syringe
CN115054781A (zh) * 2022-05-26 2022-09-16 扬州美德莱医疗用品股份有限公司 一种安全针罩和针座的连接结构
CN115054781B (zh) * 2022-05-26 2024-05-31 扬州美德莱医疗用品股份有限公司 一种安全针罩和针座的连接结构

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101269249A (zh) * 2008-04-28 2008-09-24 林作钱 一种改进的针头慢速回缩注射器

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101269249A (zh) * 2008-04-28 2008-09-24 林作钱 一种改进的针头慢速回缩注射器

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112451785A (zh) * 2014-10-28 2021-03-09 拜耳医药保健有限公司 自定向压力护套以及压力护套到注射器的接口
CN109893717A (zh) * 2019-04-09 2019-06-18 西安交通大学医学院第一附属医院 一种静脉输液港用无损伤针组
CN109893717B (zh) * 2019-04-09 2021-05-25 西安交通大学医学院第一附属医院 一种静脉输液港用无损伤针组
AU2020200304A1 (en) * 2019-12-16 2021-07-01 Guangdong Hongshan Medical Device Technology Co., Ltd Novel composite safety self-destructing syringe
CN115054781A (zh) * 2022-05-26 2022-09-16 扬州美德莱医疗用品股份有限公司 一种安全针罩和针座的连接结构
CN115054781B (zh) * 2022-05-26 2024-05-31 扬州美德莱医疗用品股份有限公司 一种安全针罩和针座的连接结构

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