Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS3924623 A
Publication typeGrant
Publication dateDec 9, 1975
Filing dateNov 4, 1974
Priority dateNov 4, 1974
Publication numberUS 3924623 A, US 3924623A, US-A-3924623, US3924623 A, US3924623A
InventorsAvery Carl Frederick
Original AssigneeMarion Health And Safety Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Tip for applicator swab
US 3924623 A
Abstract  available in
Images(2)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

United States Patent Avery 1 51 Dec. 9, 1975 TlP FOR APPLICATOR SWAB 3,605,240 9/1971 Avery, Jr. e: a] 29/208 Inventor: Carl Frederick y Rockford, Ill 3,731,687 5/1973 Glassman 128/285 [73] Assignee: Marion Health and Safety, lnc., Prim y EXaminerAldriCh M ry Rockford, Ill. Attorney, Agent, or FirmWolfe, Hubbard, Leydig, [221 Filed: Nov. 4, 1974 f I [21] Appl. No.1 520,467 [57] ABSTRACT The swabbing tip of an applicator tube is defined by a 52 us. (:1. 128/269; 128/2 w cotton-like Sheet Whose margins are folded inwardly 51 Int. c1. A61F 13/00 and Stuffed the tube as to leave a founded 5 Field of Search 128/269 2 w 285; 15/506; dome adjacent the end of the tube. The inner face of 300/21 the sheet is lined with a resilient foam-like layer which enables the size of the dome to be increasedwhile 5 References Cited making the dome more quickly saturable. In an alter- UNITED STATES PATENTS native embodiment, the outer face of the cotton-like sheet is covered with a thin sheet of scrim which re- 1,822,566 9/1931 Davies 128/269 duces tearing of the cottomlike material while making 3i. 128/285 the dome substantially lintrfree. Q

3,586,380 6/1971 Alibeckoff 128/269 X 3 Claims, 8 Drawing Figures US. Patent Dec. 9, 1975 Sheet 1 of 2 3,924,623

9. 3. fee/0F 457) J. (PP/0 4 679 US. Patent Dec. 9, 1975 Sheet 2 of2 3,924,623

TIP FOR APPLICATOR SWAB BACKGROUND OF THE INVENTION This invention relates to an applicator swab and, more particularly, to a swab of the type which includes a liquid-containing tube into which is telescoped a swabbing tip made of cotton-like material adapted to be saturated by the liquid.= A swab of this general character is disclosed in Avery et al U.S. Pat. No. 3,605,240 and, in such a swab, the swabbing tip is made from a cotton-like sheet whose margins are folded inwardly and stuffed into the tube so that the remaining portion of the sheet defines a dome at the end of the tube. To help hold the swabbing tip in the tube, the tip is wetted with a solvent which makes the inside of the tube temporarily tacky so that the tip may adhere to the tube.

SUMMARY OF THE INVENTION The general aim of the present invention is to provide an applicator swab having a new and improved swabbing tip which defines a larger and more easily saturable dome at the end of the tube, is held securely in place in the tube and yet requires no more cotton-like material than previous swabs of a comparable size.

A more detailed object is to achieve the foregoing by providing a swabbing tip in which the inside face of the cotton-like sheet is lined with a layer of resilient foamlike material. The foam-like layer resiliently urges the margins of the cotton-like material outwardly into tight engagement with the inner side of the tube so as to enable secure holding of the tip within the tube without need of stuffing so much cotton-like material into the tube and thus leaving more material to define the dome. In addition, the foam-like material provides a porous core at the center of the dome and enables the liquid in the tube to pass more quickly through the dome.

The invention also resides in the use of a thin sheet of scrim around thedome to reduce tearing of the cottonlike material and to provide a substantially lint-free covering for the cotton-like material.

These and other objects and advantages of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an elevational view of a typical prior art applicator swab, parts being broken away and shown in section.

FIG. 2 is a perspective view of a cotton-like sheet used to form the swabbing tip of a typical prior art swab.

FIG. 3 is an exploded perspective view which shows the cotton-like sheet of a typical prior art swab in a folded condition prior to being stuffed into the tube.

FIG. 4 is a view corresponding to FIG. 1 but showing an applicator swab having a unique swabbing tip incorporating the new and improved features of the present invention.

FIG. 5 is an exploded perspective view showing the sheets used to form the unique swabbing tip.

FIG. 6 is an exploded perspective view showing the sheets of FIG. 5 in a folded condition prior to being stuffed into the tube.

' FIGS. 7 and 8 are views corresponding to FIGS. 4 and 5, respectively, but show another embodiment of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An appreciation of the present invention may be best gained by understanding the construction of a prior applicator swab of the type sold for several years by the assignee of the present invention. Such a swab is shown in FIG. 1 of the drawings and is generally similar to the swab shown in FIG. 8 of the aforementioned Avery et al. patent.

The swab 10 shown in FIG. 1 comprises a tube 11 made of flexible but self-sustaining plastic and having a closed end 13 and an open end 14. The tube has a length of approximately I 4 inches and an inside diameter of approximately 9/32 inch.

Telescoped into the tube 11 is a frangible ampoule 15 made of glass and filled with a liquid such as Merthiolate. When the swab 10 is used, the tube is squeezed inwardly between the thumb and the forefinger to break the ampoule and release the liquid into the tube. The released liquid saturates an absorbent swabbing tip 16 which is telescoped into the open end 14 of the tube and which may be used to apply the liquid to a surface such as the skin area surrounding a wound.

The swabbing tip 16 is made of a cotton-like material such as nonrwoven fibrous cotton known by the name Webril or a synthetic fibrous material similar to polyester. Other cotton-like materials may be used for the swabbing tip as long as the material is soft and absorbent. The tip is formed from an initially rectangular sheet 17 (FIG. 2) of cotton-like material by folding at least the two shorter margins 19 of the sheet inwardly to form an inner cylinder 20 and an outer rounded dome 21. The cylinder 20 defined by the inwardly folded margins is stuffed snugly into the open end 14 of the tube 11 (see FIG. 1) while the dome 21 is left protruding from the outer end to form the applicator portion of the tip 16. To help hold the tip in a fixed axial position in the tube, the tip is wetted with a solvent such as acetone after the ampoule 15 and the tip have been placed in the tube. The solvent reacts with an acetate lining around the inner side of the open end portion of the tube and renders the lining tacky so that the cylinder 20 subsequently becomes cemented to the inner side of the tube. The aforementioned patent discloses a method and machine for making the tip and for assembling the tip to the tube.

1 In the case of the swab 10 having a tube 14 with the dimensions set forth above, a cotton-like sheet 17 having a length of about 1 inch, a width of about /2 and a thickness of between 3/32 inch and V8 inch is used to form the tip 16. To insure that sufficient material will be cemented to the tube to hold the tip securely in place, the cylinder 20 within the tube is made relatively long, the cylinder having a length of about 9/32 inch. As a result, the dome 21 protrudes outwardly approximately 3/16 inch from the end of the tube and has a major diameter of about 5/16 inch.

The present invention contemplates the provision of an applicator swab 10' (FIG. 4) having a new and improved swabbing tip 16' which, when compared with the tip 16, defines a significantly larger applicator dome 21 and yet uses a cotton-like sheet 17' (FIG. 5) which is no larger than the sheet 17. In addition to being larger and thus forming a better applicator, the

3 dome 21 is more readily saturable than the dome 21 and thus the liquid released into the tube 11 flows to the outer end of the dome 21 more quickly so that there is less delay between the time of breaking of the ampoule l and the time the outer end of the dome becomes wet and ready for use.

Specifially, the foregoing advantages are achieved by lining the inner face of the cotton-like sheet 17 with a layer 25 (FIG. 5) of foam-like material such as polyurethane foam or similar resilient and porous material. The foam-like layer 25 has rectangular dimensions approximately the same as those of the cotton-like sheet 17 and has a thickness just less than l/ 16 inch.

The foam-like layer 25 is superimposed with the inner side of the cotton-like sheet 17 before the latter is folded and stuffed into the open end 14 of the tube 11. As a result, the margins 26 of the foam-like layer 25 are located within the tube 11' on the inner side of the cotton-like cylinder 20' while the central portion of the layer 25 defines a porous core 27 at the center of the dome 21 By virtue of their resiliency, the margins 26 of the foam-like layer 25 urge the outer side of the cylinder 20 outwardly into pressing engagement with the inner side of the tube 11'. When the tip 16' is wetted with the acetone solvent, the margins 26 of the layer 25 expand and urge the outer side of the cylinder 20 even more tightly into engagement with the inner side of the tube so that an extremely good bond may be established between the cylinder and the tacky inner surface of the tube. As a result of the good bond, the cylinder 20 need only extend a short distance into the tube to hold the tip 16' firmly in place in the tube. Indeed, with the present swab the length of the cylinder within the tube is only about inch or approximately one-half the length of the cylinder 20.

Because the inner cylinder 20 is comparatively short, more material is left to define the outer dome 21'. In the case of the swab 10', the dome protrudes outwardly about ll/32 inch from the open end 14 of the tube 1 1 andhas a major diameter of approximately 13/32 inch. When wetted by the liquid in the ampoule 15', the foam layer expands and causes the dome 21 to blossom to an even larger diameter. Accordingly, the large dome serves as a more effective applicator and is less likely to flatten when pressed against the skin being swabbed. Moreover, the sides of the dome overhang and shield the raw edge defined by the open end 14' of the tube 11' and form a cushion for such edge so that the edge will not abrade the skin.

While it is possible, of course, to form a large dome simply by using a sheet of cotton-like material larger than the sheet 17 or 17, the dome and cylinder formed by such a sheet are very tightly compressed and thus are not easily saturated. The present invention avoids this disadvantage and provides a large and quickly saturable dome 21' because the cylinder 20 is comparatively short and because the liquid may pass quickly through the porous core 27 defined by the foam-like material at the center of the dome. Indeed, the large dome 21' of the present invention, with its central porous core 27, becomes saturated even more quickly than the smaller dome 21 of the previous swab 10.

Another swab l0" incorporating the features of the invention is shown in FIGS. 7 and 8 and, in this instance, the outer side of the cotton-like sheet 17" is covered with a very thin sheet 30 of nylon scrim whose margins are folded inwardly and directly engage the inner side of the tube 1 1" when the sheets 17" and 30 and the foam layer 25" are stuffed into the tube to form a cylinder 20" and a dome 21". The scrim 30 tears less easily than the cotton-like sheet 17" and thus is less likely to shred and tear away from the tube if an attempt is made to pull the tip 16" out of the end of the tube. In addition, the scrim provides a smooth but porous covering for the dome 21" and is substantially free of loose fibers or lint.

I claim as my invention:

1. An applicator swab comprising a tube made of flexible but self-sustaining plastic and having an open end and a closed end, an ampoule filled with liquid and housed within said tube, said ampoule being frangible and releasing said liquid into said tube when the sides of the tube are squeezed inwardly to break the ampoule, and an absorbent swabbing tip telescoped into the open end of said tube and adapted to be saturated by said liquid, said tip comprising a sheet of cotton-like material whose margins are folded inwardly and stuffed into said tube to cause said sheet to define a dome adjacent the open end of the tube, and a layer of resilient foam-like material lining and contacting the inner face of said sheet and resiliently urging the folded margins of said sheet outwardly toward the inner side of said tube, the remaining portion of said layer defining a porous inner core at the central portion of saiddome.

2. An applicator swab comprising a tube, a quantity of liquid within said tube, and a swabbing tip telescoped into said tube and adapted to be saturated by said liquid, said tip comprising a sheet of cotton-like material whose margins are folded inwardly and stuffed into said tube, and a layer of resilient foam-like material lining and contacting the inner face of said sheet and resiliently urging the folded margins of said sheet outwardly toward the inner side of said tube.

3. An applicator swab as defined in claim 2 further including a thin sheet of scrim covering the outer face of said cotton-like sheet and having its margins stuffed into said tube.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1822566 *Nov 2, 1928Sep 8, 1931Mine Safety Appliances CoMedicament applicator
US3079921 *Apr 17, 1959Mar 5, 1963Johnson & JohnsonAbsorbent product
US3324855 *Jan 12, 1965Jun 13, 1967Heimlich Henry JSurgical sponge stick
US3586380 *Nov 12, 1968Jun 22, 1971Nylonge CorpMethod of producing an improved swab
US3605240 *Mar 12, 1969Sep 20, 1971Medical Supply CoSwab cutting,forming,and assembling mechanism
US3731687 *Jul 16, 1971May 8, 1973J GlassmanCatamenial tampon
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4578055 *Apr 26, 1984Mar 25, 1986Fischer Dan EControlled diffusion medicament applicator
US4784506 *Jul 8, 1986Nov 15, 1988Kores Holding Zug AbBreakable ampule with swab
US4997371 *Jun 22, 1988Mar 5, 1991Honda Giken Kogyo Kabushiki KaishaDental agent applicator
US5246371 *Sep 1, 1992Sep 21, 1993Ultradent Products, Inc.Method and apparatus for delivery of highly filled, thixotropic sealant to teeth
US5269684 *Aug 31, 1992Dec 14, 1993Ultradent Products, Inc.For controlled delivery of a dental agent to a tooth surface
US5313959 *Apr 21, 1993May 24, 1994Becton, Dickinson And CompanyFor collecting and transporting biological specimens
US5445462 *Apr 18, 1994Aug 29, 1995Medi-Flex Hospital Products, Inc.Liquid applicator
US5746019 *Jan 19, 1996May 5, 1998Synergy Technologies, Inc.Hunters scent system
US6083002 *Feb 4, 1999Jul 4, 20003M Innovative Properties Co.Cartridge for dispensing liquid compositions
US6095813 *Jun 14, 1999Aug 1, 20003M Innovative Properties CompanyMethod for applying a dental composition to tooth structure
US6283933 *Dec 23, 1998Sep 4, 2001Closure Medical CorporationApplicator for dispensable liquids
US6413087Feb 24, 2000Jul 2, 20023M Innovative Properties CompanyPackaged applicator assembly
US6773189 *Dec 5, 2003Aug 10, 2004Garry TsaurMulti-directional applicator
US7581899Nov 30, 2004Sep 1, 2009James Alexander CorporationDispenser and process
US7637679Aug 29, 2007Dec 29, 2009James Alexander CorporationDispenser and process
US7976234Apr 28, 2006Jul 12, 2011James Alexander CorporationMulti-chambered dispenser and process
US8100294Dec 18, 2007Jan 24, 2012James Alexander CorporationContainer assembly
US8198344Jun 20, 2008Jun 12, 2012Adhezion Biomedical, LlcMethod of preparing adhesive compositions for medical use: single additive as both the thickening agent and the accelerator
US8293838Jun 20, 2008Oct 23, 2012Adhezion Biomedical, LlcStable and sterile tissue adhesive composition with a controlled high viscosity
US8403178Dec 18, 2007Mar 26, 2013James Alexander CorporationContainer assembly
US8550737Sep 20, 2010Oct 8, 2013Adhezion Biomedical, LlcApplicators for dispensing adhesive or sealant material
US8585308May 31, 2011Nov 19, 2013James Alexander CorporationMulti-chambered dispenser and process
US8603451May 22, 2012Dec 10, 2013Adhezion Biomedical, LlcAdhesive compositions for medical use: single additive as both the thickening agent and the accelerator
US8609128Feb 12, 2009Dec 17, 2013Adhezion Biomedical, LlcCyanoacrylate-based liquid microbial sealant drape
US8613952Nov 14, 2007Dec 24, 2013Adhezion Biomedical, LlcCyanoacrylate tissue adhesives
US8652510Jul 29, 2013Feb 18, 2014Adhezion Biomedical, LlcSterilized liquid compositions of cyanoacrylate monomer mixtures
US8658185Jan 7, 2009Feb 25, 2014Innovative Pharmaceutical Concepts (Ipc) Inc.Kit useful for treating tumors and lesions of the skin and the mucous membranes
US8729121Jun 25, 2007May 20, 2014Adhezion Biomedical, LlcCuring accelerator and method of making
US8910830Dec 18, 2007Dec 16, 2014James Alexander CorporationContainer assembly
CN100390028CMay 12, 2003May 28, 2008曹荣华Sealed container
WO2006022627A1 *Jul 21, 2004Mar 2, 2006Pan Shun-IApplicator with interchangeable inserts
Classifications
U.S. Classification604/3
International ClassificationA61F13/40
Cooperative ClassificationA61M35/006
European ClassificationA61M35/00B2
Legal Events
DateCodeEventDescription
Jan 23, 1992AS02Assignment of assignor's interest
Owner name: MEDCON HOSPITAL PRODUCTS, INC.
Effective date: 19920117
Owner name: MEDI-FLEX HOSPITAL PRODUCTS, INC. A CORPORATION OF
Jan 23, 1992ASAssignment
Owner name: MEDI-FLEX HOSPITAL PRODUCTS, INC., KANSAS
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MEDCON HOSPITAL PRODUCTS, INC.;REEL/FRAME:005978/0835
Effective date: 19920117
Dec 27, 1985AS02Assignment of assignor's interest
Owner name: MARION LABORATORIES, INC., A CORP. OF DE.
Owner name: MEDCON HOSPITAL PRODUCTS, INC., BUILDING 23, SUITE
Effective date: 19850827
Dec 27, 1985ASAssignment
Owner name: MEDCON HOSPITAL PRODUCTS, INC., BUILDING 23, SUITE
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. SUBJECT TO LICENSE RECITED;ASSIGNOR:MARION LABORATORIES, INC., A CORP. OF DE.;REEL/FRAME:004491/0965
Effective date: 19850827
Aug 25, 1980ASAssignment
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MARION HEALTH AND SAFETY, INC.;REEL/FRAME:003792/0595
Owner name: MARION LABORATORIES, INC., DELAWARE
Effective date: 19800630
Aug 25, 1980AS02Assignment of assignor's interest
Owner name: MARION HEALTH AND SAFETY, INC.
Owner name: MARION LABORATORIES, INC. A CORP. OF DE.
Effective date: 19800630