GB401365A - Improvements in or relating to hypodermic syringes - Google Patents

Improvements in or relating to hypodermic syringes

Info

Publication number
GB401365A
GB401365A GB1385032A GB1385032A GB401365A GB 401365 A GB401365 A GB 401365A GB 1385032 A GB1385032 A GB 1385032A GB 1385032 A GB1385032 A GB 1385032A GB 401365 A GB401365 A GB 401365A
Authority
GB
United Kingdom
Prior art keywords
nut
spindle
piston
casing
engine
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB1385032A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HUGH TITFORD CAMPKIN
Original Assignee
HUGH TITFORD CAMPKIN
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 HUGH TITFORD CAMPKIN filed Critical HUGH TITFORD CAMPKIN
Priority to GB1385032A priority Critical patent/GB401365A/en
Publication of GB401365A publication Critical patent/GB401365A/en
Expired legal-status Critical Current

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
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
    • A61M5/31576—Constructional features or modes of drive mechanisms for piston rods
    • A61M5/31583—Constructional features or modes of drive mechanisms for piston rods based on rotational translation, i.e. movement of piston rod is caused by relative rotation between the user activated actuator and the piston rod
    • A61M5/31586—Constructional features or modes of drive mechanisms for piston rods based on rotational translation, i.e. movement of piston rod is caused by relative rotation between the user activated actuator and the piston rod performed by rotationally moving or pivoted actuator, e.g. an injection lever or handle
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
    • A61M5/31566—Means improving security or handling thereof
    • A61M5/31573—Accuracy improving means
    • A61M5/31575—Accuracy improving means using scaling up or down transmissions, e.g. gearbox

Landscapes

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

Abstract

401,365. Hypodermic syringes. CAMPKIN, H. T., 49, Bedford Square, London. May 13, 1932, No. 13850. [Class 81 (ii).] Means for the operation of hypodermic syringes from a dental engine or other motor comprise screw and nut mechanism so constructed and arranged that at or near the end of the forward stroke of the piston or plunger of the syringe the mechanism runs freely to prevent jamming. An adaptor 2, Fig. 1, is screwed on the syringe body 3 and has a flange 2b for securing the glass phial 4. A casing 1 screws into the adaptor and is formed with or receives a nut 5 having a fine screw-thread, while at its other end it receives a slidable sleeve 6 secured against rotation by a key and keyway 1b, 6b. The sleeve carries a connector 7 which engages the outer casing of the drive from the dental engine. A spindle 8 extends through the sleeve, being fitted with a collar 8a, and a spiked cap 7b for engaging the drive. A threaded portion 8c co-operates with the nut 5, the length being such that for a full stroke of the piston it passes completely through the nut, unthreaded portions 8d being provided at each end. The coned end of the spindle engages a seating in a plug 9 secured to the piston 3a, and carries a pin 8e and nut 9b for securing it to said plug. The syringe is filled by reversing the engine and the forward speed of the piston is regulated by the controlling switch of said engine. If desired, the casing 1 may carry the connector 7, the spindle being driven through telescopic members, keyed or splined together. In a modification, Fig. 2, a casing 10 accommodates a reduction gear and receives the adaptor 11 which is flanged at 11b to form a bearing for the nut 5. The gearing comprises a gear wheel 12, mounted on the nut 5 and meshing with a pinion 14 on a spindle 13 carried by the usual spiked connector 7b. The threaded spindle 8 extends into a guide tube 15 and is held against rotation by a transverse pin 8f engaging slots 15a in said tube. According to the Provisional Specification, the reduction gear may consist of a worm and worm wheel.
GB1385032A 1932-05-13 1932-05-13 Improvements in or relating to hypodermic syringes Expired GB401365A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1385032A GB401365A (en) 1932-05-13 1932-05-13 Improvements in or relating to hypodermic syringes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1385032A GB401365A (en) 1932-05-13 1932-05-13 Improvements in or relating to hypodermic syringes

Publications (1)

Publication Number Publication Date
GB401365A true GB401365A (en) 1933-11-13

Family

ID=10030476

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1385032A Expired GB401365A (en) 1932-05-13 1932-05-13 Improvements in or relating to hypodermic syringes

Country Status (1)

Country Link
GB (1) GB401365A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003041768A1 (en) * 2001-11-14 2003-05-22 Riemser Arzneimittel Ag Injection device and ampoule, particularly for an injection device
WO2006015501A1 (en) * 2004-08-11 2006-02-16 Tecpharma Licensing Ag Auto-injector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003041768A1 (en) * 2001-11-14 2003-05-22 Riemser Arzneimittel Ag Injection device and ampoule, particularly for an injection device
WO2006015501A1 (en) * 2004-08-11 2006-02-16 Tecpharma Licensing Ag Auto-injector

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