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.


  1. Advanced Patent Search
Publication numberUS2029495 A
Publication typeGrant
Publication dateFeb 4, 1936
Filing dateOct 17, 1934
Priority dateOct 17, 1934
Publication numberUS 2029495 A, US 2029495A, US-A-2029495, US2029495 A, US2029495A
InventorsLowe Frank A
Original AssigneeLowe Frank A
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Surgical instrument
US 2029495 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

SURGICAL INS'FRUMENT Filed Oct. 17, 1934 ATTORNEY U U W b v NVENTORT V BY Madam/a Patented Feb. 4, 1936 UNITED STATES L ATENT OFFICE SURGICAL INSTRUMENT Frank A. Lowe, San Francisco, Calif.

Application October 17, 1934, Serial No. 748,619

2 Claims. (Cl. 123-305) This invention relates to surgical instruments tilage to be removed. The incision may be either of the kind particularly adapted for use in reof the types known as para-patellar,split-patellar, oving semilunar cartilages from the knee. or Sir Robert Jones. In using the instrument the In removing semilunar cartilage from its atcartilage is grasped at its anterior end and with tachment it is often difficult to maintain a tean ordinary knife is freed from its attachment for 5 notomy knife or otl or cutting instrument in place. app e y hello a inch- After the enlarged The bed from which the cartilege is removed is knife portion of the instrument is inserted through often jagged, and besides this the posterior end the incision, the handle 2 is manip in $11011 of the cartilege is very diflicult to see. The presa manner that the said knife portion is slipped 1o ent invention has for its primary object the prointo a posit on n Wh c he kn fe edge 6 is 10- 1O vision of an improved surgical instrument for recated at the base of .the cartilage in the path almoving the semilunar cartileges from the knee. ready started. The curve of the knife portion In the accompanying drawing: of the instrument, conforming as it does to the Fig. l is a plan view of a surgical instrument curvature of the cartilage, causes the knife edge embodying the preferred form of my invention; to b b ug t i t e p pe Cutting p o Fig. 2 is a side view of the same; and The rw d y p j in pr p 5 being p Fig. 3 is an enlarged sectional view taken on the tioned at opposite sides of the knife edge serve line ?.3 of Fig. l. as guides during the manipulation of the instru- Referring to the drawing the numeral I desigment. By making traction with a clamp on the 5:0 nates a slightly tapered slender shank, made prefanterior end of the cartilage and pushing on the erably from a suitable quality of steel, having a handle of the instrument, the base of the cartilage heavy and considerably enlarged handle 2 at one may be followed around until it is freed. The end and a slightly curved and somewhat flattened length of the shank 2 permits the knife portion knife portion at its opposite end. It is of conof the instrument to be operated upon tissue or L5 siderable importance that the handle 2 be encartilage which is considerably removed from the larged and heavy, thereby facilitating to a depo t Where t e s o is made. 1 y can cided extent the proper handling of the instruthe operation be successfully performed with my ment when a cartilage removing operation is perinstrument through an incision much smaller formed. The end of the instrument where the than would have been heretofore requir but 90 knife portion is located is formed with a curve the previ pr of h v the incision 0- corresponding substantially to the curvature of cated at a point close to the cartilage to be cut a semilunar cartilage. Opposite sides of the away may now be changed so that it may be made shank, at points where the knife portion begins, at a convenient location considerably removed are curved outwardly as at 3, thereby providing therefrom. an enlarged or widened part 4 which continues It is apparent to those skilled in the art that my the slight curve commencing in the forward end invention is susceptible of numerous changes with of the shank. The opposite edges of the widened respect to form, shape and minor details of conpart 4 are substantially parallel and terminate Struction. It is, therefore, to be understood that at the ends of two spaced blunt tips 5 which prothe appended claims shall determine the limits ject beyond a knife edge 6. The width of the my invention may assume rather than the exact knife edge is approximately one quarter of an disclosures herein made. inch, which is the average thickness of a semi- Having described my invention what I claim is: lunar cartilage. The knife edge is located at l. A surgical instrument comprising a shank points along the outer curved side of the widened having an, enlarged and curved end portion a part 4 and is positioned at the forward end of a pair of curved spaced probe members projecting beveled surface '5". The entire knife end of the forwardly from the end portion, and a cutting instrument, commencing at a point on the shank edge provided at the forward end of the end porimmediately adjacent the widened part 4 and tion at points between the probe members, the ending at the blunt tips 5, is gradually curved said cutting edge being located along the outer so as to permit the knife edge 6 to become operacurved side of the end portion, and the said probe tively positioned in a proper cutting position members being substantially parallel to one anagainst the concave articular surfaces of the other and positioned in separate planes, each pertibia. pendicular to the cutting edge.

In ordinary practice an incision is firstly made 2. A surgical instrument for use in removing 1n the 8 near the 1009171011 0f. the Semilunar carsemilunar cartilages comprising a slender shank,

a curved end portion at one end of the shank having a curvature corresponding substantially to the curvature of a semilunar cartilage, a pair of curved spaced probe members projecting forward- 1y from the main body of the end portion, a knife edge provided on the main body of the end portion at points between the probe members, the

said knife edge being located along the outer curved side of the end portion, and the said probe members being substantially parallel to one another and positioned in separate planes, each perpendicular to the cutting edge.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2866266 *Mar 16, 1954Dec 30, 1958Victor T HoeflichTool for nicking steel rule dies
US3467100 *Aug 15, 1967Sep 16, 1969Frank F RubinNasal osteotome
US3716057 *Apr 13, 1970Feb 13, 1973Rubin FGuarded dorsal osteotome with stabilizer
US3915169 *Nov 14, 1974Oct 28, 1975George McguireSurgical knife having malleable shank
US3994301 *Apr 14, 1975Nov 30, 1976S & S Medical Products Co., Inc.Submammary dissector
US4493321 *May 25, 1982Jan 15, 1985Leather Robert PVenous valve cutter for the incision of valve leaflets in situ
US4494542 *Jun 7, 1982Jan 22, 1985Lee Mary KSuture cutter, extractor and method to cut and remove sutures
US4955894 *Jan 30, 1989Sep 11, 1990Alcon Laboratories, Inc.Posterior capsulotomy knife
US5133719 *Jun 27, 1991Jul 28, 1992Frederick WinstonDisk plow and methods therefor
US5368035 *Sep 17, 1992Nov 29, 1994Boston Scientific CorporationUltrasound imaging guidewire
US5372138 *Dec 9, 1992Dec 13, 1994Boston Scientific CorporationAcousting imaging catheters and the like
US5421338 *Jun 3, 1994Jun 6, 1995Boston Scientific CorporationAcoustic imaging catheter and the like
US5524630 *May 17, 1995Jun 11, 1996Crowley; Robert J.Acoustic imaging catheter and the like
US5546948 *Nov 28, 1994Aug 20, 1996Boston Scientific CorporationUltrasound imaging guidewire
US5715825 *Jun 10, 1996Feb 10, 1998Boston Scientific CorporationAcoustic imaging catheter and the like
US6165127 *Sep 26, 1997Dec 26, 2000Boston Scientific CorporationAcoustic imaging catheter and the like
US6364840Sep 27, 2000Apr 2, 2002Boston Scientific CorporationAcoustic imaging catheter and the like
US6386873Dec 19, 2000May 14, 2002Jeff T. BlankDental tool
US6572553Jan 4, 2002Jun 3, 2003Scimed Life Systems, Inc.Medical imaging device
US6585655May 31, 2002Jul 1, 2003Scimed Life Systems, Inc.Medical imaging device
US7037271May 27, 2003May 2, 2006Boston Scientific CorporationMedical imaging device
US7731719 *Dec 22, 2004Jun 8, 2010John NordtSafety knife for resection of annulus
US8828082Jul 9, 2010Sep 9, 2014R Tree Innovations, LlcInter-body implant
WO1983004174A1 *May 23, 1983Dec 8, 1983Robert Paul LeatherA venous valve cutter for the incision of valve leaflets in situ
U.S. Classification606/83, 606/84, 30/289
International ClassificationA61B17/32
Cooperative ClassificationA61B17/32
European ClassificationA61B17/32