US3636955A - Surgical cutting needle - Google Patents

Surgical cutting needle Download PDF

Info

Publication number
US3636955A
US3636955A US3636955DA US3636955A US 3636955 A US3636955 A US 3636955A US 3636955D A US3636955D A US 3636955DA US 3636955 A US3636955 A US 3636955A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
needle
cutting edge
intersection
planar surface
angle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Inventor
Leonard D Kurtz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deknatel Inc
Howmedica Inc
Original Assignee
Deknatel Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32Surgical cutting instruments
    • A61B17/3209Incision instruments
    • A61B17/3211Surgical scalpels, knives; Accessories therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/06Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
    • A61B17/06066Needles, e.g. needle tip configurations

Abstract

An improved surgical needle of the type having a simple main cutting edge extending across the needle and formed by the intersection of two planar surfaces, for use in cutting through bone, cartilage or other hard body tissue material. The forward end of the needle includes a third planar surface extending at an angle to the axis of the needle and forming, as its intersection with one of the first two mentioned planar surfaces, a strong rearwardly sloped chisel cutting edge arranged to impinge on the hard material to be cut.

Description

United States Patent n 1 3,6369955 I [2]] AppLNo; 881,673

Kurtz 1 Jan. 25, 1972 [54] SURGICAL CUTTING NEEDLE FOREIGN PATENTS 0R APPLICATIONS 72 Inventor: Leonard D. Kurtz, Woodmere, NY. 158,983 10/1964 U.S.S.R. ..128 305 [73] Asslgneez Deknalel Primary ExaminerChanning L. Pace 22] Filed: Dec. 3, 1969 Attorney-Larson, Taylor & Hinds [57] ABSTRACT An improved surgical needle of the type having a simple main "128/305, i 6 ib l {7 /gg cutting edge extending across the needle and formed by the int ft f f n th h [58] Field Of Search ..30/l64.9, 168; 83/660; ersec ion 0 W0 p anar Su aces or use m cu mg roug bone, cartilage or other hard body tissue material. The for- 128/305* 339; 142/42; 145/25 ward end of the needle includes a third planar surface extending at an angle to the axis of the needle and forming, as its in- [56] References cued tersection with one of the first two mentioned planar surfaces, UNITED STATES PATENTS a strong rearwardly sloped chisel cutting edge arranged to impinge on the hard material to be cut. 1,471,062 10/1923 Riblett ..l45/25 UX 2,524,636 10 1950 Preis et al. ..30 1 64.9 x 6 Claims, 9 Drawing Figures PATENTEDJANZSIBTZ 3,636,955

. .2 (K I I INVENTOR LEONARD D. KURTZ FIG-9 miw wJ w ATTORNEYS SURGICAL CUTTING NEEDLE BACKGROUND 1. Field of the Invention This invention relates to surgical cutting instruments and in particular it relates to an improved surgical needle for cutting bone, cartilage or other hard tissue material.

2. Description of the Prior Art It is apparent that a surgical cutting instrument must be as sharp as possible in order to perform its function properly. In my previous U.S. Pat. Nos. 2,869,550 and No. 3,094,123, issued Jan. 20, 1959 and June I8, 1963, respectively, I disclosed and claimed a new sharper surgical needle having a single main cutting edge formed by the intersection of two planar surfaces, the said edge extending from one side of the needle to the other side thereof. In this type of needle greater sharpness is obtained by increasing the slope angle of the main cutting edge relative to the needle axis. However, as the slope angle is increased, a point is reached at which so little material is left at the point that the point lacks sufficient structural strength to effectively penetrate the tissue to be cut without the tip of the point burring or otherwise becoming deformed.

In my U.S. Pat. No. 3,094,123 I disclosed and claimed the concept of blunting the tip of the needle to avoid deformation of the tip, even when using a fairly sharp slope angle.

However, to avoid burring when cutting through bone, cartilage, or other hard body tissue the amount of blunting would have to be much greater than as disclosed in my U.S. Pat. No. 3,094, I 23. However, such increased blunting would then tend to reduce the sharpness of the needle to a point where penetration of the tissue would be difficult.

Thus, there exists a need for a surgical needle having a very sharp point and which is strong enough to retain its structural integrity when used to cut through bone or other hard tissue.

SUMMARY OF THE INVENTION Thus, the purpose of the present invention is to provide a surgical cutting instrument which is both sharp enough and strong enough to cut through bone or other hard body tissue without burring or otherwise becoming deformed at its point.

According to the present invention there is provided a surgical cutting instrument having a main cutting edge extending from one side of the needle to a point near the other side thereof and passing through the axis of the needle, the said main edge being formed by the intersection of two planar surfaces. To simplify discussion of the invention, it is convenient to refer to the side of the needle having the main cutting edge as the bottom of the needle, and to refer to the plane defined by the main cutting edge and the needle axis as the reference plane, so that, when the main edge is on the bottom the reference plane is vertical. However, it is apparent that the needle could assume any orientation in practice.

The forward end of the needle is ground to form a third planar surface which intersects both of the first two planar surfaces. The plane of this third planar surface is such that it forms an angle other than 90 with the reference plane so that the intersection of the third planar surface with one of the first two planar surfaces is located forward of its intersection with the other of the first two planar surfaces thereby forming a strong, sharp, rearwardly sloped chisel-type forward cutting edge at the intersection of the third planar surface with said one of the first two planar surfaces. At one end this chisel edge intersects the outer periphery of the needle to form the forwardmost tip which is the first part of the needle to be presented to the bone to be cut; and at its other end this chisel edge joins smoothly with the said main cutting edge. The horizontal component of the angle between the reference plane and the plane of the third planar surface may be any convenient angle but preferably is 45. In this context assuming the reference plane is vertical, the plane of the third planar surface may be vertical or it may be sloped forwardly as it extends from its intersection with the main cutting edge to its intersection with the outer periphery of the needle. Stated differently, when the third planar surface is vertical, the line of intersection between the third planar surface and the reference plane will be substantially perpendicular to the tree dle axis; and when the third planar surface is sloped upwardly and forwardly the line of intersection of the third planar surface and the reference plane will form an angle other than with the needle axis.

Thus, it is an object of this invention to provide a new improved surgical cutting needle for cutting bone or other hard tissue which overcomes disadvantages of previously known surgical cutting needles.

It is another object of this invention to provide a surgical cutting needle of the type having a main cutting edge extending almost completely across the needle and formed by the intersection of two planar surfaces, and including a third planar surface at the forward end of the needle formed at an angle relative to the needle axis to form a chisel-type cutting edge.

Other objects and the attendant advantages of the present invention will become apparent from the detailed description to follow together with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS There follows a detailed description of the preferred embodiments of the present invention to be read together with the accompanying drawings. However, it is to be understood that the detailed description together with the accompanying drawings are intended only to illustrate preferred embodiments of the invention and that the invention is capable of numerous modifications and variations within the spirit and scope of the invention as defined in the claims.

In the drawings:

FIG. 1 illustrates generally a surgical cutting needle of the type having a single main cutting edge.

FIG. 2 illustrates the point of the surgical cutting needle as shown in FIG. 1 in side elevation, and showing the features of the present invention.

FIG. 3 is a top view of FIG. 2.

FIG. 4 is a bottom view of FIG. 2.

FIG. 5 shows the end of the needle of FIG. 2 taken in the direction of arrow A of FIG. 2.

FIG. 6 illustrates the needle point taken in direction normal to the front surfaces of the needle as represented by arrows N and N of FIGS. 2 and 3.

FIGS. 7, 8 and 9 are views similar to FIGS. 2, 3 and 4, respectively, but illustrating a modified embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 illustrates a surgical needle I0 having a needle point 111 and a shank portion 12. FIGS. 2-9 illustrate in greater detail the point II.

FIGS. 2-6 illustrate a first embodiment of the invention. The needle includes the two conventional planar surfaces 15 and 116 which form the main cutting edge 17 as known heretofore. However, the present invention also includes a third planar surface 18 which is formed at an angle other than 90 with the reference plane of the needle. Surface 18 intersects planar surface 16 at its forward side to form a chisel-type forward cutting edge 20; and it intersects the planar surface 115 at its second or rearward side to form a rearward edge 21. The intersection of surface 18 with the outer periphery of the needle is shown at B9.

Consequently, the point formed by edges 19 and 20 forms the forwardmost tip of the needle which is the first part of the needle presented to the tissue to be cut. As force is applied to the needle the tip penetrates the tissue as the sharp forward cutting edge 20, which is formed by the intersection of surfaces 18 and 16, continues to cut new tissue adjacent the tip. Further cutting is carried out by the main cutting edge 17.

As shown in FIGS. 1-6 the plane of surface 18 forms a complex angle with the axis of the needle. It is necessary that the plane of face 18 be inclined rearwardly by the angle a as shown in FIGS. 3 and 4. This will assure that the edge 20, forming the forward cutting edge, will slope rearwardly as well as downwardly as the face 18 intersects the face 16. In a preferred embodiment the angle a will be approximately 45. Additionally, to provide a slightly sharper point of introduction, (slope angle) the face 18, as shown in FIGS. 2-6, is inclined rearwardly as well as downwardly, the downward component being illustrated by the angle B in FIG. 2. Thus, the two arrows indicated as N and N represent the components of the normal to the plane 18 taken in the vertical and horizontal planes, respectively. FIG. 6 illustrates the surface of 18.

FIGS. 7-9 illustrate a modified embodiment of the invention wherein like numerals are employed for like parts except that a prime has been added to each numeral. The embodiment of FIGS. 7-9 is identical to the embodiment of FIGS. 2-6 except that the face 18' is not inclined rearwardly; that is, N, is horizontal and 3 0. Also, the plane 18 appears as a single line in both the top view of FIG. 8 and the bottom view in FIG. 9. In contrast, it will be noted that in the bottom view of the first embodiment (FIG. 4) a portion of the surface 18 can be seen.

Although the invention has been described in considerable detail with respect to preferred embodiments thereof, it should be apparent that the invention is capable of numerous modifications and variations apparent to those skilled in the art without departing from the spirit and scope of the invention as defined in the claims.

I claim:

1. A surgical cutting needle comprising a body portion and a cutting portion, the latter having a longitudinal axis, said cutting portion having a main cutting edge formed by the intersection of first and second substantially planar surfaces,

said main cutting edge lying on a line which intersects the said axis and defines with said axis a reference plane, a third planar surface intersecting the first and second planar surfaces and forming the forward end of the cutting portion away from the said body portion, said main cutting edge extending from the outer periphery of the needle forwardly toward the tip of the needle to an intersection with the said third planar surface, the plane of the third planar surface forming an angle other than with the said reference plane wherein the intersection of the third planar surface with one of the first two planar surfaces forms a chisel-type forward cutting edge extending along the forward end of the needle from its intersection with said main cutting edge forwardly to the forwardmost tip of the needle at the intersection of the chisel-type cutting edge with the outer periphery of the needle whereby the chisel-type forward cutting edge provides sharp initial penetration into hard tissue material and subsequent cutting thereof is done by the said main cutting edge.

2. A surgical needle as claimed in claim 1 wherein the said angle is approximately 45.

3. A surgical needle as claimed in claim I wherein the line of intersection between the third planar surface and the reference plane is substantially perpendicular to the said needle axis.

4. A surgical needle as claimed in claim 3 wherein the said angle is approximately 45.

5. A surgical needle as claimed in claim 4 wherein the line of intersection of the third planar surface and the reference plane forms an angle with the axis of the needle.

6. A surgical needle as claimed in claim 5 wherein the said angle between the reference plane and the plane of the third planar surface is approximately 45.

Claims (6)

1. A surgical cutting needle comprising a body portion and a cutting portion, the latter having a longitudinal axis, said cutting portion having a main cutting edge formed by the intersection of first and second substantially planar surfaces, said main cutting edge lying on a line which intersects the said axis and defines with said axis a reference plane, a third planar surface intersecting the first and second planar surfaces and forming the forward end of the cutting portion away from the said body portion, said main cutting edge extending from the outer periphery of the needle forwardly toward the tip of the needle to an intersection with the said third planar surface, the plane of the third planar surface forming an angle other than 90* with the said reference plane wherein the intersection of the third planar surface with one of the first two planar surfaces forms a chiseltype forward cutting edge extending along the forward end of the needle from its intersection with said main cutting edge forwardly to the forwardmost tip of the needle at the intersection of the chisel-type cutting edge with the outer periphery of the needle whereby the chisel-Type forward cutting edge provides sharp initial penetration into hard tissue material and subsequent cutting thereof is done by the said main cutting edge.
2. A surgical needle as claimed in claim 1 wherein the said angle is approximately 45* .
3. A surgical needle as claimed in claim 1 wherein the line of intersection between the third planar surface and the reference plane is substantially perpendicular to the said needle axis.
4. A surgical needle as claimed in claim 3 wherein the said angle is approximately 45* .
5. A surgical needle as claimed in claim 4 wherein the line of intersection of the third planar surface and the reference plane forms an angle with the axis of the needle.
6. A surgical needle as claimed in claim 5 wherein the said angle between the reference plane and the plane of the third planar surface is approximately 45* .
US3636955A 1969-12-03 1969-12-03 Surgical cutting needle Expired - Lifetime US3636955A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US88167369 true 1969-12-03 1969-12-03

Publications (1)

Publication Number Publication Date
US3636955A true US3636955A (en) 1972-01-25

Family

ID=25378954

Family Applications (1)

Application Number Title Priority Date Filing Date
US3636955A Expired - Lifetime US3636955A (en) 1969-12-03 1969-12-03 Surgical cutting needle

Country Status (1)

Country Link
US (1) US3636955A (en)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3788320A (en) * 1972-02-25 1974-01-29 Kendall & Co Spinal needle
DE2738452A1 (en) * 1977-04-15 1978-10-26 Deknatel Inc Surgical sternotomy needle
EP0107961A1 (en) * 1982-10-25 1984-05-09 Ethicon Inc. Hard tissue surgical needle
US4534827A (en) * 1983-08-26 1985-08-13 Henderson Donald W Cutting implement and method of making same
US4799483A (en) * 1988-02-11 1989-01-24 Kraff Manus C Suturing needle with tail mounted cutting blade and method for using same
US5002564A (en) * 1989-06-19 1991-03-26 Ethicon, Inc. Surgical needle configuration with spatula geometry
EP0453132A1 (en) * 1990-04-05 1991-10-23 Matsutani Seisakusho Co. Ltd., Suture needle and method of producing same
US5123910A (en) * 1990-11-07 1992-06-23 Mcintosh Charles L Blunt tip surgical needle
WO1995001129A1 (en) * 1993-07-01 1995-01-12 W.L. Gore & Associates, Inc. A suture needle
EP0746243A4 (en) * 1992-10-28 1996-06-11 Kmi Inc Diamond surgical blade
US5665078A (en) * 1993-10-18 1997-09-09 Ethicon, Inc. Surgical needle with decreased penetration
EP0872212A3 (en) * 1993-11-01 1998-12-30 Ethicon, Inc. Process for manufacturing taper point surgical needles
US20040106948A1 (en) * 2002-10-04 2004-06-03 Scott Cunningham Sharpoint needle
US20050182446A1 (en) * 2004-02-12 2005-08-18 Desantis Robert J. Surgical suture needle with blunt spherical region
US7032586B1 (en) * 2002-09-17 2006-04-25 Steven James Lindsay Single point engraving cutter tip
US20060135917A1 (en) * 2002-10-09 2006-06-22 Bruno Reihl Needle tip
US20130283624A1 (en) * 2012-04-26 2013-10-31 Thomas Scimone Ceramic cutting blades
US20150273705A1 (en) * 2012-11-09 2015-10-01 3M Innovative Properties Company Coated snap cutter blade and method of making same
US9192375B2 (en) 2012-02-29 2015-11-24 Marker Medical, Llc Surgical apparatus and method
US9414855B1 (en) * 2007-11-05 2016-08-16 Cardica, Inc. Anvil knife for anastomosis tool
EP3187120A4 (en) * 2014-08-29 2018-04-11 MANI Inc. Suture needle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU158983A1 *
US1471062A (en) * 1923-03-24 1923-10-16 Victor T Riblett Flue tool
US2524636A (en) * 1947-11-01 1950-10-03 H P Preis Engraving Machine Co Cutter for pantograph engraving machines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU158983A1 *
US1471062A (en) * 1923-03-24 1923-10-16 Victor T Riblett Flue tool
US2524636A (en) * 1947-11-01 1950-10-03 H P Preis Engraving Machine Co Cutter for pantograph engraving machines

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3788320A (en) * 1972-02-25 1974-01-29 Kendall & Co Spinal needle
DE2738452A1 (en) * 1977-04-15 1978-10-26 Deknatel Inc Surgical sternotomy needle
FR2387025A1 (en) * 1977-04-15 1978-11-10 Deknatel Inc Improvements in surgical cutting instruments surgical suture needles kind
US4128351A (en) * 1977-04-15 1978-12-05 Deknatel Inc. Sternotomy surgical needle
JPH0370493B2 (en) * 1982-10-25 1991-11-07 Ethicon Inc
EP0107961A1 (en) * 1982-10-25 1984-05-09 Ethicon Inc. Hard tissue surgical needle
JPS5995038A (en) * 1982-10-25 1984-05-31 Ethicon Inc Surgical suturing needle for hard tissue
US4513747A (en) * 1982-10-25 1985-04-30 Ethicon, Inc. Hard tissue surgical needle
US4534827A (en) * 1983-08-26 1985-08-13 Henderson Donald W Cutting implement and method of making same
US4799483A (en) * 1988-02-11 1989-01-24 Kraff Manus C Suturing needle with tail mounted cutting blade and method for using same
US5002564A (en) * 1989-06-19 1991-03-26 Ethicon, Inc. Surgical needle configuration with spatula geometry
EP0453132A1 (en) * 1990-04-05 1991-10-23 Matsutani Seisakusho Co. Ltd., Suture needle and method of producing same
US5178628A (en) * 1990-04-05 1993-01-12 Matsutani Seisakusho Co., Ltd. Suture needle and method of producing same
US5123910A (en) * 1990-11-07 1992-06-23 Mcintosh Charles L Blunt tip surgical needle
US5693072A (en) * 1990-11-07 1997-12-02 Mcintosh; Charles L. Blunt tip surgical needle
EP0746243A4 (en) * 1992-10-28 1996-06-11 Kmi Inc Diamond surgical blade
EP0746243A1 (en) * 1992-10-28 1996-12-11 ASSIL, Kerry K. Diamond surgical blade
WO1995001129A1 (en) * 1993-07-01 1995-01-12 W.L. Gore & Associates, Inc. A suture needle
US5464422A (en) * 1993-07-01 1995-11-07 W. L. Gore & Associates, Inc. Suture needle
US5665078A (en) * 1993-10-18 1997-09-09 Ethicon, Inc. Surgical needle with decreased penetration
EP0872212A3 (en) * 1993-11-01 1998-12-30 Ethicon, Inc. Process for manufacturing taper point surgical needles
US7032586B1 (en) * 2002-09-17 2006-04-25 Steven James Lindsay Single point engraving cutter tip
US7998170B2 (en) * 2002-10-04 2011-08-16 Tyco Healthcare Group Lp Sharpoint needle
US20040106948A1 (en) * 2002-10-04 2004-06-03 Scott Cunningham Sharpoint needle
US20060135917A1 (en) * 2002-10-09 2006-06-22 Bruno Reihl Needle tip
US7824382B2 (en) * 2002-10-09 2010-11-02 Roche Diagnostics International Ag Needle tip
US8002796B2 (en) 2004-02-12 2011-08-23 Tyco Healthcare Group Lp Surgical suture needle with blunt spherical region
US20050182446A1 (en) * 2004-02-12 2005-08-18 Desantis Robert J. Surgical suture needle with blunt spherical region
US9414855B1 (en) * 2007-11-05 2016-08-16 Cardica, Inc. Anvil knife for anastomosis tool
US9572566B2 (en) 2012-02-29 2017-02-21 Marker Medical, Llc Surgical suturing apparatus and method
US9192375B2 (en) 2012-02-29 2015-11-24 Marker Medical, Llc Surgical apparatus and method
US20130283624A1 (en) * 2012-04-26 2013-10-31 Thomas Scimone Ceramic cutting blades
US20170246748A1 (en) * 2012-04-26 2017-08-31 Thomas Scimone Ceramic cutting blades
US9662796B2 (en) * 2012-04-26 2017-05-30 Thomas Scimone Ceramic cutting blades
US20150273705A1 (en) * 2012-11-09 2015-10-01 3M Innovative Properties Company Coated snap cutter blade and method of making same
EP3187120A4 (en) * 2014-08-29 2018-04-11 MANI Inc. Suture needle

Similar Documents

Publication Publication Date Title
US3945117A (en) Surgical blade with adjustable blade guard
US4454875A (en) Osteal medical staple
US1868286A (en) Golf club
US4842585A (en) Steel cannula for spinal and peridural anaesthesia
US5785680A (en) Injector and object to be injected by the injector
US3196956A (en) Digger tooth
US4269274A (en) Streamlined wear-resistant deep tillage tool
US2637355A (en) Hack saw blade
US5129897A (en) Curved laser light emitter
US5026386A (en) Flaval separator
US2059414A (en) Crumbless bread knife
US2998649A (en) Combination suture cutting and removing instrument
US3859700A (en) Inserted blade cutter
US1931773A (en) Dandelion digger
US6338511B1 (en) Root cutting shovel
US3185442A (en) Timber wedge
US7070583B1 (en) Medical bevel needle
US5403344A (en) Multi-faceted surgical needle
US2230645A (en) Drill
US4373518A (en) Method of drilling living bone
US3959901A (en) High strength earth working penetration tooth
US5337482A (en) Safety blade for utility knife
US4180909A (en) Knife with exchangeable blades
US4823467A (en) Serrated-edge knives
US5109930A (en) Earth splitter

Legal Events

Date Code Title Description
AS Assignment

Owner name: PFIZER HOSPITAL PRODUCTS GROUP INC.

Free format text: CHANGE OF NAME;ASSIGNOR:HOWMEDICA, INC.;REEL/FRAME:004471/0589

Effective date: 19840624