US1496654A - Friction device for plungers of syringes and similar articles - Google Patents

Friction device for plungers of syringes and similar articles Download PDF

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Publication number
US1496654A
US1496654A US354063A US35406320A US1496654A US 1496654 A US1496654 A US 1496654A US 354063 A US354063 A US 354063A US 35406320 A US35406320 A US 35406320A US 1496654 A US1496654 A US 1496654A
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United States
Prior art keywords
plunger
plungers
syringes
similar articles
friction device
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Expired - Lifetime
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US354063A
Inventor
Edmond C Crowther
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.)
A P De Sanno & Son Inc
Ap De Sanno & Son Inc
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A P De Sanno & Son Inc
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Priority to US354063A priority Critical patent/US1496654A/en
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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
    • 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/315Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31501Means for blocking or restricting the movement of the rod or piston
    • A61M2005/3151Means for blocking or restricting the movement of the rod or piston by friction
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/315Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31501Means for blocking or restricting the movement of the rod or piston
    • A61M5/31505Integral with the syringe barrel, i.e. connected to the barrel so as to make up a single complete piece or unit

Definitions

  • the object of my invention is to provide a spring clam ing or frictional device which is adapt to snap on the open end of a syringe body or barrel and produce a friction upon the movable plunger therefor, whereby the plunger ma be frictionally held at all positions of a justment and moreover, wherein the device will introduce sufiicient resistance to movement of the plunger that it may be manipulated by the ph slcian with definite accuracy.
  • Fly invention has for a further object, the provision of a spring wire frictional device which not only introduces a yielding resistance to movement of the plunger as above stated, but also coacts with the plunger, when pushed fully into the barrel, so that it frictlonally looks or retains the plunger in said position and thereb prevents accidental separation of the p unger and escape of the remainingfluid content of the syringe, in case of careless depositing of the syringe after use or during intermittent use thereof.
  • a further object of my invention consists in the utilization of the friction providing means as an attachment to the smooth glass syringe which will prevent the same from rolling and thus dropping from the table to the floor.
  • the invention consists in the novel construction of friction devices for plungers of syringes and similar articles, as hereinafter more fully described and defined in. the claims.
  • Fig. 1 is a perspective view of a syringe having my improved clamp and frlction creating device applied thereto;
  • Fig. 2 is a lan view of the wire clamp and frictional evice embodying my invention removed from the syringe; and
  • Fi 3 and 4 are respectively front and side elzvations of the same.
  • the body 2 is the syringe body or barrel and 3 is the plunger therefor, said parts being usually formed of glass and providing a ground. sliding fit.
  • the body 2 is provided at its 0 en end with a rim or flange 9; and the p unger 3- is provided at its outer end with knob or handle part 10 and a contracted neck 4 which curves inward from the full diameter of the plunger to the smallest diameter next to the knob or handle part.
  • FIG. 5 is my improved friction applying means and com rises a wire bent into the shape clearly s own in Figs. 2, 3 and 4 and adapted to snap into position upon the body and over the flange 9 thereof, as shown in Fig. 1.
  • the middle portion of the unitary wire length is bent into a curve, as at 6, preferably of circular form but not quite closed, to form a clamping jaw; and the end portions 8, 8, are bent upward and inward, as at 7, 7, and curved in opposite directions, as shown in Fig. 2, to provide two clamping jaws between which the plunger 3 may frictionally slide.
  • the curved jaw part 6 is snapped about the body 2 below the flange 9 and the curved portions 7, 7, fit about the said flange and su port the clamping ends 8, 8, immediatey above the flange and adjacent the entrance into the body or barrel.
  • the plunger 3 is frictionally held between the two clampi ends 8, 8, as shown in Fig. 1, so that it wi remain in its various positions of ad'ustment; and when the plunger is pushed y inward, these ends 8, 8, press inwardly into the neck groove 4 and retain the plunger in such position.
  • the frictional resistance to movement of t e. plunger makes it more reliable in manipulation, because the physician may more accurately operate the plunger by the ,feel which is made possible by this frictional resistance provided by use of my improved device.
  • the frictional device 5 is formed of tempered steel wire and in the shape given to it, provides the parts 6 and 8 which look respectively below and above the glass flange 9 of the body, so that it cannot move longitudinally of the body. It will also be noted that the wire device 5 is so made that it may be simultaneously sprung into posi- 7 tit sprung into enga ement with the body, and thereafter, the p unger be introduced. It is further apparent that while it is desirable that there shall be two spring ends 8, 8, forapplying frictional pressure to the plunger, one such end may be employed and said end may be variously shaped, if desired, in roviding suitable engagement with the un er.
  • a frictional device for a syringe consisting of a wire bent at its middle portion to rovide a spring clamping jaw adapted to t the syringe body and having the free end parts of said jaw bent upwardly and inwardly to provide two oppositely acting spring portions movable toward each other under sprin action for clamping the plunger, sai spring portions. being normally closer together than the clearance space within the spring clamping jaw and having its free ends extending toward the closed end of the jaw.
  • a frictional device for a syringe body and plunger comprising a unitary wire bent into a curved portion to provide a spring Jaw clamp to fit the syringe body, sald jaw having two upward and inwardly turned ends to hold the device to the body and to provide an oppositely directed secondary clamp constitutin an engagin means adapted to yielding y contact wit opposite sides of the plunger, the space between the end portions being less than the space between the opposite sides of the spring jaw clamp.

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

Description

"June 3,1924. 3,496,654
E. C. CROWTHER FRICTION DEVICE FOR PLUNGERS OF SYRINGES AND SIMILAR ARTICLES Filed Jan. 26, 1920 Arroxy Patented Je 3, 1924.
UNITED STATES j 1,496,654 PATENT OFFICE.
EDMOND C. CROWIHIER, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO A. P.
DE SANNO & SON, INC., A CORPORATION OF DELAWARE. I
FRICTION DEVICE FOR PLUNGER/S 0F SYRINGES AND SIMILAR ARTICLES.
Application filed January 28, 1920. Serial No. 854,068.
To all whom it may concern: I
Be it known that LEnuoNo C. Caowrnnn, a citizen of the United States, and resident of Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented an Improvement in Friction Devices for Plungers of S ringes and Similar Articles, of which the f dllowing is a specification.
The object of my invention is to provide a spring clam ing or frictional device which is adapt to snap on the open end of a syringe body or barrel and produce a friction upon the movable plunger therefor, whereby the plunger ma be frictionally held at all positions of a justment and moreover, wherein the device will introduce sufiicient resistance to movement of the plunger that it may be manipulated by the ph slcian with definite accuracy.
Fly invention has for a further object, the provision of a spring wire frictional device which not only introduces a yielding resistance to movement of the plunger as above stated, but also coacts with the plunger, when pushed fully into the barrel, so that it frictlonally looks or retains the plunger in said position and thereb prevents accidental separation of the p unger and escape of the remainingfluid content of the syringe, in case of careless depositing of the syringe after use or during intermittent use thereof.
A further object of my invention consists in the utilization of the friction providing means as an attachment to the smooth glass syringe which will prevent the same from rolling and thus dropping from the table to the floor.
With the above and other objects in view, the nature of which will be more fully understood from the description hereinafter, the invention consists in the novel construction of friction devices for plungers of syringes and similar articles, as hereinafter more fully described and defined in. the claims.
Referring to the drawings: Fig. 1 is a perspective view of a syringe having my improved clamp and frlction creating device applied thereto; Fig. 2 is a lan view of the wire clamp and frictional evice embodying my invention removed from the syringe; and Fi 3 and 4 are respectively front and side elzvations of the same.
2 is the syringe body or barrel and 3 is the plunger therefor, said parts being usually formed of glass and providing a ground. sliding fit. The body 2 is provided at its 0 en end with a rim or flange 9; and the p unger 3- is provided at its outer end with knob or handle part 10 and a contracted neck 4 which curves inward from the full diameter of the plunger to the smallest diameter next to the knob or handle part. i
5 is my improved friction applying means and com rises a wire bent into the shape clearly s own in Figs. 2, 3 and 4 and adapted to snap into position upon the body and over the flange 9 thereof, as shown in Fig. 1. The middle portion of the unitary wire length is bent into a curve, as at 6, preferably of circular form but not quite closed, to form a clamping jaw; and the end portions 8, 8, are bent upward and inward, as at 7, 7, and curved in opposite directions, as shown in Fig. 2, to provide two clamping jaws between which the plunger 3 may frictionally slide. The curved jaw part 6 is snapped about the body 2 below the flange 9 and the curved portions 7, 7, fit about the said flange and su port the clamping ends 8, 8, immediatey above the flange and adjacent the entrance into the body or barrel. The plunger 3 is frictionally held between the two clampi ends 8, 8, as shown in Fig. 1, so that it wi remain in its various positions of ad'ustment; and when the plunger is pushed y inward, these ends 8, 8, press inwardly into the neck groove 4 and retain the plunger in such position. When using the syri e, the frictional resistance to movement of t e. plunger makes it more reliable in manipulation, because the physician may more accurately operate the plunger by the ,feel which is made possible by this frictional resistance provided by use of my improved device. v
The frictional device 5 is formed of tempered steel wire and in the shape given to it, provides the parts 6 and 8 which look respectively below and above the glass flange 9 of the body, so that it cannot move longitudinally of the body. It will also be noted that the wire device 5 is so made that it may be simultaneously sprung into posi- 7 tit sprung into enga ement with the body, and thereafter, the p unger be introduced. It is further apparent that while it is desirable that there shall be two spring ends 8, 8, forapplying frictional pressure to the plunger, one such end may be employed and said end may be variously shaped, if desired, in roviding suitable engagement with the un er.
It will now e apparent that I have devised a novel and useful construction which embodies the features of advanta e enumerated as desirable, and while I ave in the present instance shown and described the preferred embodiment thereof which has been found in practice to give satisfactory and reliable results, it is to be understood that I do not restrict myself to the details, as the same are susceptible of modification in various particulars without departing from the spirit or scope of the invention.
Having now described my invention, what I claim as new and desire to secure by Letters Patent, is:
1. A frictional device for a syringe consisting of a wire bent at its middle portion to rovide a spring clamping jaw adapted to t the syringe body and having the free end parts of said jaw bent upwardly and inwardly to provide two oppositely acting spring portions movable toward each other under sprin action for clamping the plunger, sai spring portions. being normally closer together than the clearance space within the spring clamping jaw and having its free ends extending toward the closed end of the jaw.
2. The invention according to claim 1, characterized by having the end parts pro viding the oppositely acting spring portions made curved in opposite directions to provide two free curved jaws.
3. A frictional device for a syringe body and plunger, comprising a unitary wire bent into a curved portion to provide a spring Jaw clamp to fit the syringe body, sald jaw having two upward and inwardly turned ends to hold the device to the body and to provide an oppositely directed secondary clamp constitutin an engagin means adapted to yielding y contact wit opposite sides of the plunger, the space between the end portions being less than the space between the opposite sides of the spring jaw clamp.
In testimony of which invention, I hereunto set my hand.
EDMOND C. CROWTHER.
US354063A 1920-01-26 1920-01-26 Friction device for plungers of syringes and similar articles Expired - Lifetime US1496654A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2489040A (en) * 1946-02-14 1949-11-22 Becton Dickinson Co Holder
US4961728A (en) * 1988-12-30 1990-10-09 Becton, Dickinson And Company Single-use syringe having misuse resistant features
US4973310A (en) * 1988-12-30 1990-11-27 Becton, Dickinson And Company Single-use syringe
US5000737A (en) * 1987-09-18 1991-03-19 Program For Appropriate Technology In Health (Path) Single use disposable syringe
US20040049892A1 (en) * 2002-08-29 2004-03-18 Gen-Probe Incorporated Clamp
US20070073226A1 (en) * 2005-09-23 2007-03-29 John Polidoro Syringe
US20080171969A1 (en) * 2003-12-18 2008-07-17 Id-Tech Limited Syringe
US20090227957A1 (en) * 2005-08-11 2009-09-10 Arzneimittel Gmbh Apotheker Vetter & Co. Ravensbur Syringe

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2489040A (en) * 1946-02-14 1949-11-22 Becton Dickinson Co Holder
US5000737A (en) * 1987-09-18 1991-03-19 Program For Appropriate Technology In Health (Path) Single use disposable syringe
US4961728A (en) * 1988-12-30 1990-10-09 Becton, Dickinson And Company Single-use syringe having misuse resistant features
US4973310A (en) * 1988-12-30 1990-11-27 Becton, Dickinson And Company Single-use syringe
US20040049892A1 (en) * 2002-08-29 2004-03-18 Gen-Probe Incorporated Clamp
US7017238B2 (en) 2002-08-29 2006-03-28 Gen-Probe Incorporated Clamp
US20060101622A1 (en) * 2002-08-29 2006-05-18 Gen-Probe Incorporated Clamp
US7396344B2 (en) 2002-08-29 2008-07-08 Gen-Probe Incorporated Clamp
US20080171969A1 (en) * 2003-12-18 2008-07-17 Id-Tech Limited Syringe
US20090227957A1 (en) * 2005-08-11 2009-09-10 Arzneimittel Gmbh Apotheker Vetter & Co. Ravensbur Syringe
US8137324B2 (en) * 2005-08-11 2012-03-20 Arzneimittel Gmbh Apotheker Vetter & Co. Ravensburg Syringe with internal safety device
US20070073226A1 (en) * 2005-09-23 2007-03-29 John Polidoro Syringe

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