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Publication numberUS1578945 A
Publication typeGrant
Publication dateMar 30, 1926
Filing dateJan 8, 1923
Priority dateJan 8, 1923
Publication numberUS 1578945 A, US 1578945A, US-A-1578945, US1578945 A, US1578945A
InventorsWithers Sanford M
Original AssigneeWithers Sanford M
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Radium needle structure
US 1578945 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

S. M. WITHERS RADIUM NEEDLE STRUCTURE March 30 1926. 1,578,945 I Filed Jan. 8, 1923 Patented Mar. 30, 1926 i SANFORD uwnrnnns;

or' nnnvnn; oo 'onAnoQ 7 RADIUM NEEDLE. s'r tvo'runn.

- Application filed January 8, 1923. Serial 115, 11, 1. I

To all whom it maly concern: V

Be it known that I, SANFORD M.'-WrrHisRs, a citizen of the United States, and resident of the city and county of Denver, State "of Colorado, have invented certain new and useful Improvements 'in Radium Needle Structures; and I do declare the'following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being bad to the accompanying drawings, which .form a part of this specification.

The object of this invention is to provide a radium needle wherein the weak point of connection of the charge-carrying portion or body of the needle with the closure portion is so located asto prevent any appreciable amount of strain on said point during use and to thereby avoid breakage during use.

Heretofore the clnrge-carrying portions of radium needles have been integral with the point and the closure which has been an eye piece or a handle has been hard soldered to the charge-carrying body. As the hard soldering, produces a weak spot along the needle in the vicinityof the joint, a limited amount of strainmay result in breaking ofi' the eye piece or handle from the body.

Thisdifliculty has been overcome, by making the eye piece or handle integral with the charge-carrying body, and closing the outer end of the body by hard soldering. The

point is either hard soldered in position, or is threaded on for the purpose of changing points. In the latter instance a plug is hard soldered to the body to form the closure; In

either event, the weak point of the needle is placed close to the end thereof, whereby it will be impossible to produce sufficient leverage during use to cause breakage at the weak point caused by the soldering operation.

In the accompanying drawings wherein certain embodiments of the invention are disclosed,

v Fig.- 1 shows a portion of a needle in which the charge-receivingv cavity has been formed and on which a funnel has been turned to assist the filling operation;

b Fig. 2 shows said cavity filled and an asbestosretainlng wad in position;

V Fig. 3 is an elevation of a point to be hard" soldered in the end of the charge receiving portion or body; I

Fig. 4 shows the funnel cut oil and the point hard soldered in position;

Fig. 5 indicates a modification wherein a I separate plug will 'besoldere'd in position, "and the point secured as maybe desired;

. Fig. 6 shows a form wherein the plug of Fig. 5 is threaded-for removably receiving various types of points;

a-Figs. and 8 show. two forms of points adapted to be threaded on the construction of Fig. 6;

Figs. 9 and 10 are elevations of needles haying long handles 0r stems on'which the f points are respectively hard soldered and threaded; p i Fig. 11- represents a point to be used interchangeably with that of Fig. 10;

Fig. 12 is an enlarged detail showinga threaded point assembled on a short needle .havlng an eye Fig. 13 shows a modification wherein the point is threaded onto the body of the needle. The body of the needle indicated at 10 is shown as having ,a long stem orhandle, except in the form of Fig.12 where the usual short needle is shown provided with a short shank having an eye as seen at 120. In

forming the needle the required length of metal rod for the entire" needle desired is used, and a funnel is turned thereon at 12 to assist in filling the radium-receiving cavity 14-. which is drilled into the end of the rod.

After the radium charge 15 has been placed awad of asbestos 16 is positioned on top of the charge to retain the same, and the funnel 12 is sawed off on the line a. In the form of Figs. 3 and 4, a plug 18 integral with apoint 20 is hard soldered into the end of the radium receiving cavity.

The hard soldering operation forms .a weak or brittle zone indicatedat 22 in the region of the joint which would be apt to breakif suflicient leverage were produced about the zone. But by reason of the location of thiszone close to the point rather than on the opposite side of the body portion which contains the radium, it will be impossible in ordinary use forsuch breakage to occur. V

In the form of Fig. 5, a separate plug 24 may be hard soldered in position, and in the formof Fig. 6 this plug 24 may be threaded at 25 for receiving the threaded portion '26 of the points 20 and 21 of Figs. 7 and 8.

This form also brings the weakzone 22. close to the point. for the same purpose as the other form. 'Fig. 9 shows the entire long.

' handled needle having a point 20 hard solderedthereomand Fig. 10 shows alike needle with a threaded point 20 thereon; adapted to be replaced by the point 21 of Fig. 11.

Fig. 12 is a sectional detail showing the assembled form of Figs. -6 ,-7 -and-8--applied to a short needle having the commoneyehpieoe. 120 integral with the body 10. In'thi'sform the plug 24 is hard-soldered to body lO-aand the Weak zone 22 is thereby located close to the point as in the other-forms. 1F ig.f13 shows a further; slight modification wherein the plug 30is hard; solclerecl.inposition entirely' Within the; body portion-:10, said body portion being'threaded at 32 for reception of the point 20 ora point .21 like thatof Fig.1.

Thus, in all forms the Weak, 1 brittle zone formed by the hard soldering operation is placed close to the end of theneedlewhere no strain can ordinarily be produced sufficient to cause a break.

"I claim .lhArltardium needle having a radium receiving cavity, a permanent closure forone end of said .woavity, said Closure being obtained as by soldering, and a point removably mounted adjaoent'said end.

:12. \A radium needle having aradiumreceivingcavity, a permanent closure for one end. of: said. eavity,a a. point! removablymounteat-adjacent said. endg-and anintegral nianipulating portion-at theotherend.

Iii-testimonyWhereofI affix my signature.

SANFORD M. VVITHERS.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2546761 *Jan 13, 1950Mar 27, 1951Radium Chemical Company IncRadium nasopharyngeal applicator
US2797333 *Jul 24, 1953Jun 25, 1957Armour Res FoundChi-ray source
US4697575 *Nov 21, 1984Oct 6, 1987Henry Ford HospitalDelivery system for interstitial radiation therapy including substantially non-deflecting elongated member
US4754745 *Jul 7, 1986Jul 5, 1988Horowitz Bruce SConformable sheet material for use in brachytherapy
US4763642 *Apr 7, 1986Aug 16, 1988Horowitz Bruce SIntracavitational brachytherapy
US4815449 *Mar 30, 1987Mar 28, 1989Horowitz Bruce SDelivery system for interstitial radiation therapy including substantially non-deflecting elongated member
US6786858Apr 26, 2002Sep 7, 2004Ideamatrix, Inc.Delivery system and method for interstitial radiotherapy using hollow seeds
US6820318Jun 4, 2002Nov 23, 2004Ideamatrix, Inc.Dispenser places radioactive elements at desired locations in half-shell member, which are mated with a second half to form an axially stiff and longitudinally flexible bioabsorbable implant
US6997862Jul 15, 2003Feb 14, 2006Ideamatrix, Inc.Delivery system and method for interstitial radiation therapy using seed strands with custom end spacing
US7008368Nov 18, 2003Mar 7, 2006Ideamatrix, Inc.Method for making treatment strands
US7060020Dec 28, 2001Jun 13, 2006Ideamatrix, Inc.Delivery system and method for interstitial radiation therapy
US7074291Jun 4, 2002Jul 11, 2006Worldwide Medical Technologies, L.L.C.Delivery system and method for interstitial radiation therapy using strands constructed with extruded strand housings
US7094198Jun 4, 2002Aug 22, 2006Worldwide Medical Technologies, LlcDelivery system and method for interstitial radiation therapy using seed elements with ends having one of projections and indentations
US7211039Apr 24, 2006May 1, 2007Worldwide Medical Technologies LlcStrand with end plug
US7244226Nov 10, 2003Jul 17, 2007Worldwide MedicalTechnologies, LLCMethods for making therapeutic elements for implantation into patient tissue
US7252630Nov 18, 2003Aug 7, 2007Worldwide Medical Technologies LlcDelivery for interstitial radiotherapy using hollow seeds
US7407477Mar 27, 2007Aug 5, 2008Worldwide Medical Technologies LlcStrand with end plug
US7497818Mar 26, 2003Mar 3, 2009Terwilliger Richard ADelivery system and method for interstitial radiation therapy
US7648453 *Jul 13, 2006Jan 19, 2010Isodose Control Intellectual Property B.V.Catheter needle for internally irradiating a tumor in a body part
US7736293Jul 22, 2005Jun 15, 2010Biocompatibles Uk LimitedImplants for use in brachytherapy and other radiation therapy that resist migration and rotation
US7736294Oct 28, 2005Jun 15, 2010Biocompatibles Uk LimitedDelivery system and method for interstitial radiation therapy using seed strands with custom end spacing
US7736295Nov 15, 2005Jun 15, 2010Biocompatibles Uk LimitedDelivery system and method for interstitial radiation therapy using custom end spacing
US7874974Oct 28, 2005Jan 25, 2011Biocompatibles Uk LimitedDelivery system and method for interstitial radiation therapy
US7874976Sep 7, 2006Jan 25, 2011Biocompatibles Uk LimitedEchogenic strands and spacers therein
US7878964Sep 7, 2006Feb 1, 2011Biocompatibles Uk LimitedEchogenic spacers and strands
US7942803Jan 21, 2010May 17, 2011Biocompatibles Uk LimitedDelivery system and method for interstitial radiation therapy
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US7985172Apr 27, 2007Jul 26, 2011Biocompatibles Uk LimitedAfter-loader devices and kits
US7988611Nov 3, 2006Aug 2, 2011Biocompatibles Uk LimitedAfter-loader for positioning implants for needle delivery in brachytherapy and other radiation therapy
US8021291Jan 21, 2009Sep 20, 2011Biocompatibles Uk LimitedMarkers for use in brachytherapy and other radiation therapy that resist migration and rotation
US8066627Jun 16, 2006Nov 29, 2011Biocompatibles Uk LimitedDelivery system and method for interstitial radiation therapy using strands constructed with extruded strand housings
US8114007Dec 15, 2008Feb 14, 2012Biocompatibles Uk LimitedImplants for use in brachytherapy and other radiation therapy that resist migration and rotation
US8187159Feb 26, 2009May 29, 2012Biocompatibles, UKTherapeutic member including a rail used in brachytherapy and other radiation therapy
US8192345Jan 21, 2009Jun 5, 2012Biocompatibles, UKCartridge for use with brachytherapy applicator
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US8790235Aug 7, 2009Jul 29, 2014Eckert & Ziegler Debig S.A.Devices to resist migration and rotation of implants used in brachytherapy and other radiation therapy
US8795146May 4, 2010Aug 5, 2014Eckert & Ziegler Bebig S.A.Implants including spacers for use in brachytherapy and other radiation therapy that resist migration and rotation
US8821835Jun 13, 2013Sep 2, 2014Microspherix LlcFlexible and/or elastic brachytherapy seed or strand
EP2462988A1Nov 1, 2002Jun 13, 2012Biocompatibles UK LimitedDelivery system and method for interstitial radiation therapy
Classifications
U.S. Classification600/8
International ClassificationG21G4/06, A61M23/00, G21G4/00
Cooperative ClassificationG21G4/06
European ClassificationG21G4/06