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Publication numberUS3924617 A
Publication typeGrant
Publication dateDec 9, 1975
Filing dateAug 27, 1974
Priority dateSep 28, 1973
Also published asDE2443199A1
Publication numberUS 3924617 A, US 3924617A, US-A-3924617, US3924617 A, US3924617A
InventorsFerro Antonio
Original AssigneeCrinospital Spa
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Aspiration and infusion needle
US 3924617 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

D United States Patent 11 1 [111 3,

Ferro 5] Dec. 9, 1975 [5 ASPIRATION AND INFUSION NEEDLE 2,737,948 3/1956 Brown 128/221 x 2,746,454 5/1956 Sorensen 128/221 [75] Invent Fem, Italy 2,751,907 6/1956 Hickey 128/221 Assignee: crinospital SJLAI, Pala o Pig a Cheng Italy Primary Examiner-Robert W. Michell 2 F [2 1 fled Aug 1974 Assistant Examiner-Rick Opitz [21] Appl. No.: 500,933 Attorney, Agent, or FirmFinnega.n, Henderson,

Farabow & Garrett [30] Foreign Application Priority Data Sept. 28, 1973 Italy 29490/73 [57] ABSTRACT An aspiration and infusion needle which comprises a 8|; substantially cylindrical body tapering at one end, [58] Fie'ld S 27 /2 4 R which has an axial through-bore diverging from axial- 27/24 ity in the region of the point to open out at a lateral surface of the body, the curvature of the surface of the body opposite to said lateral surface extending, at the [56] References Clted point of the body, over the axial part of the through- UNITED STATES PATENTS bore. This needle does not cause the formation of 2,409,979 10/1946 Huber 128/221 splinters when penetrating elastomeric materials. 2,697,438 12/1954 Hickey.... 128/221 2,717,600 9/1955 Huber 128/221 1 Claim, 2 Drawing Figures U.S. Patant Dec. 9, 1975 3,924,617

Fig.1

1 u Q3? I, U

Fig.2

ASPIRATION AND INFUSION NEEDLE Background of the Invention 1. Field of the Invention This invention relates to an improved aspiration and infusion needle which may particularly, but not exclusively, be used in the clinical field.

2. Description of the Prior Art It is known in the medical ,art that it is often necessary to draw solution from small receptacles or bottles which are sealed by plugs made of rubber or a similar material, by using an aspiration needle which is caused to penetrate the said plug into the inner part of the receptacle or container.

However, the shape of the pointed end with which these needles are provided is such as to often cause the shearing off of splinters of elastomeric material from the plug which are likely to partially or completely obstruct the aspiration channel of the needle, thus preventing or slowing down the aspiration of the solution which is consequently subjected to contamination, If the same needle used for aspiration of the solution is subsequently employed for the injection of the solution, there is the risk of injecting, along with the solution, the splinters of elastomeric material which are likely to be present in the needle channel.

Summary of the Invention It is therefore an object of the present invention to provide an improved aspiration and infusion needle having a shape such as not to form splinters when penetrating elastomeric materials.

According to the present invention there is provided a needle for use in the aspiration and infusion of solutions comprising a substantially cylindrical body which tapers at one end to form a point and which comprises a substantially axial through-bore which diverges from axiality in the region of the point to open out at a lateral surface of the body and wherein the curvature of the surface of the body opposed to said lateral surface is such that at the point, the body extends over the substantially axial part of the through-bore.

In order that the invention may be more clearly understood an embodiment thereof will now be described by way of example with reference to the accompanying drawings.

Brief Description of the Drawings FIG. 1 is a longitudinal cross-section of the improved needle in accordance with this invention; and

FIG. 2 is an elevation of the needle in accordance with this invention, rotated through with respect to axis II-II of FIG. 1.

Description of the Preferred Embodiment Referring now to the accompanying drawing, needle 1 comprises an essentially cylindrical body 2, an axial bore 3, a bevel 5, and a curved point 8.

The point 8 of needle 1 is curved at its end wall 4 so that the minimum areas of cross-section of the bore 3 at the point 8 are inclined to an axis which is at right angle to axis II-II. In particular, end section 6 of bore 3 of needle 1 lies on a plane substantially parallel to axis II- II. Consequently, the penetration of needle 1, for instance through articles made of elastomeric material, suitable for sealing closing receptacles and small bottles containing solutions, cannot cause the shearing off of shreds of this material and their conveyance up into the bore, because the cross sectional area of bore 3 abutting the seal is zero when penetrating a plane surface perpendicular to axis IIII of FIG. 1.

The bevel 5 comprises a notch in the wall adjacent end section 6. The bevel 5 is needed to allow the sharpening of the point surface 7.

What we claim is:

1. In a needle for use in the aspiration and infusion of solutions comprising a tubular cylindrical body and a pointed end integral therewith, said body having an axial through-bore that diverges from axiality in the region of the pointed end and terminates in an opening lying in a lateral plane and wherein the curvature of the surface of the body opposite to said opening is such that at the pointed end the body extends over the axis of the tubular body, the improvement wherein the opening and the surface surrounding the opening lie in the same lateral plane located substantially midway between and parallel to the axis of the tubular body and a plane tangent to the tubular bodys outer cylindrical surface, and wherein a beveled surface is provided between the end of the surface surrounding the opening opposite from the pointed end and the tubular bodys outer cylindrical surface so that the entire opening of the needle lies in the substantially lateral plane.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2409979 *Mar 14, 1946Oct 22, 1946Huber Ralph LHypodermic needle
US2697438 *Oct 16, 1953Dec 21, 1954Bishop & Co Platinum Works JNoncoring hypodermic needle
US2717600 *Nov 24, 1954Sep 13, 1955Jennie HuberNeedle structure
US2737948 *Aug 23, 1954Mar 13, 1956Pfizer & Co CDisposable cartridge for hypodermic syringe
US2746454 *May 4, 1953May 22, 1956Sorensen Hans WIntravenous needle
US2751907 *Sep 18, 1953Jun 26, 1956Bishop & Co Platinum Works JPellet injector
US2922420 *Nov 29, 1957Jan 26, 1960Sierra Eng CoEpidural needle
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4368738 *Mar 31, 1981Jan 18, 1983Bernd TersteegenCannula
US5575780 *Jul 19, 1995Nov 19, 1996Saito; YoshikuniMedical hollow needle and a method of producing thereof
US5669543 *Nov 7, 1995Sep 23, 1997Kotec's Co., Ltd.Hollow needle for tag attacher
US5820609 *Apr 18, 1996Oct 13, 1998Saito; YoshikuniMedical hollow needle and a method of producing thereof
US5968022 *Oct 7, 1998Oct 19, 1999Saito; YoshikuniMedical hollow needle and method of production
US6702791 *Oct 26, 1999Mar 9, 2004Integ, Inc.Needle for body fluid tester
US6802199Jun 27, 2002Oct 12, 2004Integ, Inc.Needle for body fluid tester
US6878136Jan 24, 2003Apr 12, 2005Medical Product SpecialistsHuber needle with anti-rebound safety mechanism
US6913934 *Jan 7, 2002Jul 5, 2005Symyx Technologies, Inc.Apparatus and methods for parallel processing of multiple reaction mixtures
US6918894Feb 28, 2003Jul 19, 2005Medical Product SpecialistsHuber needle with anti-rebound safety mechanism
US7335513Jan 28, 2002Feb 26, 2008Symyx Technologies, Inc.Apparatus and methods for parallel processing of multiple reaction mixtures
US7455664Jun 21, 2007Nov 25, 2008Mps AcaciaHuber needle with anti-rebound safety mechanism
US7569035 *Nov 2, 2001Aug 4, 2009Meridian Medical Technologies, Inc.Automatic injector with anti-coring needle
US7776023Feb 3, 2009Aug 17, 2010Arkray, Inc.Method and implement for opening hole in soft material
US7858049Dec 20, 2007Dec 28, 2010Freeslate, Inc.Apparatus and methods for parallel processing of multiple reaction mixtures
US20020106813 *Jan 28, 2002Aug 8, 2002Symyx Technologies, Inc.Apparatus and methods for parallel processing of multiple reaction mixtures
US20020110493 *Jan 7, 2002Aug 15, 2002Symyx Technologies , IncApparatus and methods for parallel processing of multiple reaction mixtures
US20040082922 *Oct 17, 2003Apr 29, 2004Fleury Michael T.Huber needle with anti-rebound safety mechanism
US20040147881 *Jan 24, 2003Jul 29, 2004Hyun Dongchul D.Huber needle with a manually movable sleeve member for containing its injection point
US20040236249 *Jun 29, 2004Nov 25, 2004Hilgers Michael EdwardNeedle for body fluid tester
US20040241875 *Jun 30, 2004Dec 2, 2004Symyx Technologies, Inc.Apparatus and methods for parallel processing of multiple reaction mixtures
US20040260203 *Jun 8, 2004Dec 23, 2004Arkray Inc.Method and implement for opening hole in soft material
US20050027264 *Sep 1, 2004Feb 3, 2005Fleury Michael T.Huber needle with anti-rebound safety mechanism
US20070123935 *Nov 30, 2005May 31, 2007Myers Gene EMethod and apparatus for contemporaneous formation of a body structure opening and homologous pedicle
US20080138260 *Dec 20, 2007Jun 12, 2008Symyx Technologies, IncApparatus and methods for parallel processing of multiple reaction mixtures
US20090171246 *Feb 3, 2009Jul 2, 2009Arkray Inc.Method and Implement for Opening Hole in Soft Material
US20090192486 *Nov 2, 2001Jul 30, 2009Meridian Medical Technologies ,IncAutomatic injector with anti-coring needle
Classifications
U.S. Classification604/411, 604/274
International ClassificationA61M1/00, A61M5/162, A61M5/32, A61M5/14
Cooperative ClassificationA61M5/3286, A61M2205/195, A61M1/008, A61M5/162
European ClassificationA61M5/32D, A61M5/162, A61M1/00T