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 numberUS3338239 A
Publication typeGrant
Publication dateAug 29, 1967
Filing dateOct 8, 1964
Priority dateOct 8, 1964
Publication numberUS 3338239 A, US 3338239A, US-A-3338239, US3338239 A, US3338239A
InventorsWilson Mausteller John
Original AssigneeMine Safety Appliances Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Surgical puncturing device
US 3338239 A
Images(1)
Previous page
Next page
Description  (OCR text may contain errors)

United States Patent Filed Oct. 8, 1964, Ser. No. 402,539 3 Claims. (Cl. 128-329) This invention relates to a surgical puncturing device and more particularly to such a device for obtaining blood samples by making incisions of small depth into the skin.

It is an object of this invention to provide a simple, inexpensive puncturing device in which the puncturing needle is easily replaceable. A further object is to provide such a device in which a puncturing needle is detachably secured to a holder by magnetic attraction. A still further object is to provide such a device wherein only sterile needle surfaces will touch the subject from whom blood samples are being taken. Other objects will be apparent from the following description and claims.

In accordance with this invention, a puncturing needle having a head or flange of magnetic material is detachably secured to holder solely by one or more permanent magnets embedded in the holder. Preferably the head of the needle is large enough to cover the entire holder surface to which it is attached. A sterile puncturing needle can be placed on the holder, without being touched by the user, merely by bringing the portion of the holder in which the magnet is embedded into close proximity of the magnetic head on the needle. The holder includes a manually depressable plunger to eject the needle by moving it away from the magnet.

In the accompanying drawings:

FIG. 1 is a longitudinal sectional view of one embodiment of this invention showing the puncturing needle in position on the holder;

FIG. 2 is a plan view of the end face of the holder shown in FIG. 1;

FIG. 3 is a plan view of a modified needle suitable for use with the holder shown in FIG. 1; and

FIG. 4 is a longitudinal sectional view of a modified puncturing device showing the puncturing needle of FIG. 3 in position on the holder.

Referring to FIGS. 1 and 2, the holder of the puncturing device has an elongate tubular body member 2, preferably cylindrical, having a small diameter axial bore 4. The body member may be formed of any non-magnetic material, suitably plastic or stainless steel. Permanent magnets 6 are embedded in the sidewalls of the body member and have a surface 8 exposed that forms a portion of the end face 10 of the body member. The magnets may be oriented so that either one or both poles are exposed. A plunger 12, having an operating knob 14, is frictionally held in bore 4. Spring 16, arranged between the body member and knob, urges the plunger to a retracted position away from end face 10.

The needle consists of a disc-like head 20 formed of magnetic material and a centrally positioned depending pointed shaft 22. The shaft passes through the bottom of a plastic cup-shaped guide 24 which has a sidewall 26 extending beyond head 20. The head 20 is conformed to match the end face 10 of the body member and the body member is sized so that it will just fit inside cup 24.

When desiring to use the puncturing device, the user places the end of the body member in the plastic cup; the magnets attract the needle and securely hold it to the body member in the proper position as guided by the sidewalls of the cup. The user then grasps the body member to thrust the needle into the skin and withdraws it, the head of the needle serving as a stop to prevent too deep penetration. The needle is then ejected by de pressing the plunger to push it away from the magnets in end face 10.

The needles are readily sterilized, and can be conveniently supplied inserted point down in sterile foam or cotton. The skin is exposed only to the sterile surface of the needle and plastic cup, so danger of transfer of bacteria or virus from the holder is eliminated.

If desired, the magnetic needle head may be formed in a cup shape rather than using the separate guide 24.

FIG. 3 shows another needle suitable for use in this invention and is illustrated in operating position with the holder in FIG. 4. The pointed shaft 28 is press fitted into a central opening 30 of flange 32, which flange is made of magnetic material. The portion of the shaft 34 above the flange is sized to fit bore 4 of the holder to serve as a guide to maintain the needle in the proper position on the holder.

In the modified embodiment shown in FIG. 4, a stop means is provided for the plunger and the needle guide is integrally formed with the holder.

The body member 36 has a small diameter bore 38 and a chamber 40 of enlarged diameter. Plunger 42 has a flange 44 that is positioned in chamber 40. Spring 46 is arranged between the bottom wall of chamber 40 and flange 44 to urge the plunger to a retracted position, the top wall of chamber 40 serving as a stop to limit the travel of the plunger. In the manufacture of this device, the body member is conveniently formed from two semicylindrical halves; the plunger and spring are positioned in one half of the body member and the second half of the body is then placed in position and bonded to the first half. A peripheral ring 47, integrally formed with the body member, defines the end face 48 having embedded magnets 50, as previously described. The magnetic head 32 of the puncturing needle is sized to just fit inside ring 46, whereby the needle is guided to the proper position on the holder.

Although the end faces illustrated herein are concave to match a convex needle head, it is apparent that other matching shapes may be used if desired, for example, the end face and needle head may be flat.

According to the patent statutes, I have explained the principle and mode of practicing my invention and have described what I now consider to be its best embodiment. However, I desire to have it understood that, within the scope of the appended claims, the invention may be practiced otherwise than as specifically described.

I claim:

1. A surgical puncturing device comprising a cylindrical housing having an end face, an axial bore opening at said end face, a plunger within said axial bore extendable beyond said end face, resilient means to urge said plunger to a retracted position away from said end face, a permanent magnet embeddw in said housing and having at least one pole surface exposed at said end face, a removable needle having a shaft adapted to engage said bore and a disc of magnetic material matching said end face and secured to said shaft, said disc being normal to and spaced from the ends of said shaft.

2. A device according to claim 1 in which said housing has an integral peripheral ring extending outwardly from said end face and said disc lies within said ring.

3. A needle for a surgical puncturing device comprising:

(a) a shaft, having an upper cylindrical portion and a lower cylindrical portion, said upper portion having a larger diameter than said lower portion and said lower portion terminating in a surgical point, and

(b) a disc of magnetic material press fit on said lower portion and abutting said upper portion, said disc 3 4 being nonnal to and spaced from theends of said 2,627,423 2/ 1953 Copeman, shaft. 3,123,212 3/ 1964 Taylor et a1 206-634 R f en e Cited 3,208,452 9/ 1965 Stem 128-315 UNITED STATES PATENTS 3,221,739 12/ 1965 Rosenthal 128253 1 3 5 9 /1919 RICHARD A. GAUDET, Primary Examiner.

1,419,140 6/1922 Hutchinson- G. MCNEILL, Assistant Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1317455 *Dec 29, 1916Sep 30, 1919 Tool-hanixle
US1419140 *Aug 15, 1919Jun 13, 1922Hutchinson Richard ANeedle-pointing machine
US2627423 *Apr 23, 1949Feb 3, 1953Copeman Lab CoTractor hitch
US3123212 *Jun 14, 1960Mar 3, 1964 Multiple disposable intracutaneous injector package
US3208452 *Sep 8, 1960Sep 28, 1965Panray Parlam CorpSurface treating device
US3221739 *Mar 26, 1962Dec 7, 1965Roy Rosenthal SolInjection device
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3760809 *Oct 22, 1971Sep 25, 1973Damon CorpSurgical lancet having casing
US4462405 *Sep 27, 1982Jul 31, 1984Ehrlich Joseph CBlood letting apparatus
US4616649 *Sep 20, 1984Oct 14, 1986Becton, Dickinson And CompanyLancet
US5304192 *Jan 8, 1993Apr 19, 1994Sherwood Medical CompanyLancet with locking cover
US5324302 *Oct 13, 1992Jun 28, 1994Sherwood Medical CompanyLancet with locking cover
US5527333 *Sep 9, 1994Jun 18, 1996Graphic Controls CorporationSlicing disposable blood sampling device
US5582184 *Oct 11, 1994Dec 10, 1996Integ IncorporatedInterstitial fluid collection and constituent measurement
US5746217 *Nov 8, 1995May 5, 1998Integ IncorporatedInterstitial fluid collection and constituent measurement
US5820570 *Aug 27, 1997Oct 13, 1998Integ IncorporatedInterstitial fluid collection and constituent measurement
US5879367 *Sep 8, 1995Mar 9, 1999Integ, Inc.Enhanced interstitial fluid collection
US6080116 *Oct 9, 1998Jun 27, 2000Integ IncorporatedInterstitial fluid collection and constituent measurement
US6152889 *Mar 8, 1999Nov 28, 2000Integ, Inc.Body fluid sampler
US6203504Mar 3, 1999Mar 20, 2001Integ, Inc.Enhanced interstitial fluid collection
US6602205Jun 26, 2000Aug 5, 2003Integ, Inc.Interstitial fluid collection and constituent measurement
US6614522Nov 27, 2000Sep 2, 2003Integ, Inc.Body fluid sampler
US6624882Aug 30, 2002Sep 23, 2003Integ, Inc.Methods of sampling body fluid
US6712776Mar 19, 2001Mar 30, 2004Integ, Inc.Enhanced interstitial fluid collection
US6860873Mar 24, 2003Mar 1, 2005Integ, Inc.Methods for collecting body fluid
US6899851Mar 24, 2003May 31, 2005Integ, Inc.Collection well for body fluid tester
US6940591Jun 23, 2003Sep 6, 2005Integ, Inc.Body fluid sampler
US6997886Nov 17, 2003Feb 14, 2006Integ, Inc.Enhanced interstitial fluid collection
US7001343Mar 6, 2003Feb 21, 2006Integ, Inc.Interstitial fluid collection and constituent measurement
US7014615Jan 29, 2003Mar 21, 2006Integ, Inc.Interstitial fluid collection and constituent measurement
US7041067Jul 3, 2003May 9, 2006Integ, Inc.Body fluid sampler
US7066885Mar 13, 2003Jun 27, 2006Integ, Inc.Interstitial fluid collection and constituent measurement
US7137957Mar 6, 2003Nov 21, 2006Integ, Inc.Interstitial fluid collection and constituent measurement
US7182910Jun 30, 2003Feb 27, 2007Integ, Inc.Apparatus for collecting, testing and monitoring blood glucose levels
US8343074Jun 30, 2004Jan 1, 2013Lifescan Scotland LimitedFluid handling devices
EP0189117A2 *Jan 16, 1986Jul 30, 1986Becton, Dickinson and CompanyLancet
Classifications
U.S. Classification606/182
International ClassificationA61B5/15
Cooperative ClassificationA61B5/15105, A61B5/150496, A61B5/150519, A61B5/150732, A61B5/150435, A61B5/150305, A61B5/15123, A61B5/15194, A61B5/150022, A61B5/1513
European ClassificationA61B5/151S2D2, A61B5/15B18B10D, A61B5/15B18B8F, A61B5/15B18B4F, A61B5/151A2B, A61B5/15B2B, A61B5/14B2