CA1185861A - Bone marrow aspiration needle - Google Patents

Bone marrow aspiration needle

Info

Publication number
CA1185861A
CA1185861A CA000418302A CA418302A CA1185861A CA 1185861 A CA1185861 A CA 1185861A CA 000418302 A CA000418302 A CA 000418302A CA 418302 A CA418302 A CA 418302A CA 1185861 A CA1185861 A CA 1185861A
Authority
CA
Canada
Prior art keywords
cannula
stylet
needle
housing
connally
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
Application number
CA000418302A
Other languages
French (fr)
Inventor
Donald N. Mehl
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.)
CREATIVE RESEARCH AND MANUFACTURING Inc
Original Assignee
CREATIVE RESEARCH AND MANUFACTURING 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
Application filed by CREATIVE RESEARCH AND MANUFACTURING Inc filed Critical CREATIVE RESEARCH AND MANUFACTURING Inc
Application granted granted Critical
Publication of CA1185861A publication Critical patent/CA1185861A/en
Expired legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
    • A61B10/02Instruments for taking cell samples or for biopsy
    • A61B10/0233Pointed or sharp biopsy instruments
    • A61B10/025Pointed or sharp biopsy instruments for taking bone, bone marrow or cartilage samples
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
    • A61B10/02Instruments for taking cell samples or for biopsy
    • A61B10/0233Pointed or sharp biopsy instruments
    • A61B10/025Pointed or sharp biopsy instruments for taking bone, bone marrow or cartilage samples
    • A61B2010/0258Marrow samples

Abstract

ABSTRACT OF THE DISCLOSURE

Needle for bone marrow biopsies at the sternum or iliac of the body or the like including a cannula, a cannula housing supporting the cannula including a partially threaded lower member, a stylet including a stylet cap supporting the stylet and a threaded depth stop for engaging over the cannula wherein the stylet engages into the cannula in a predetermined relationship, the stylet cap interlocks to the cannula housing, and the threaded member determines the depth of penetration of the needle. The sternum needle is constructed to be either disposable or reusable depending upon the cannula housing and stylet cap material. The cannula housing includes vertical wings extending outwardly from the housing for engagement with the palm of a physician's hand, a cannula clip having ends which are soldered onto the cannula and secure into the cannula housing, and an elongated button extending outwardly from the top of the cannula housing for detent locking with the stylet cap providing for alignment of the stylet to the cannula of the sternum needle. The stylet includes a longitudinal member having a ground and buffed bevelled end maintaining a knife-sharp edge around the tip, and the other end of the stylet is bent and molded into the stylet cap where the stylet cap includes a spring detent locking groove for interlocking with the button of the cannula housing. The stylet cap is rounded at the top and includes vertical grooves for gripping during locking and unlocking. The stylet inserts into the cannula and with a twist locks about the top of the cannula with a positive digital sensory feedback signal to the physician. The depth stop includes lower portion digitory sockets for the fingers and a knurled circumference upper portion. The needle can be used with or without the depth stop as desired.

Description

it The present invention pertains to a surgical instrument and, more particularly, pertains to a biopsy needle which can either be disposable or reusable. The prior art biopsy needles have all presented some type of drawbacks when used by the physician or surgeon, and which are particularly less than desirable. Some prior art instruments are disposable and cast with very few structural details attended to, with the result that the interlocking between the style and the Connally provides for considerable play and the instrument can come apart in the user's hands resulting in injury not only to the patient but more so to the user by the sharp metal edges poking upwards into the physician's hands. Other prior art devices have some form of interlocking structure but the interlocking structure is not positive, resulting in play between the Connally and style during the process of incision into the patient resulting in considerable discomfort. Other types ox prior art structures have numerous components which during surgery are not practical in utilization by the user due to the screwing and unscrewing of the fittings.
More importantly, all of the prior art devices have grips which do not really fit into the physician's hand to provide for positive gripping by the physician but have grips which are required to be engaged by the physician in a negative way making the process of biopsy as tmcomfortable to the pllysieian/surgeon using the sternum needle as to the patient. The prior art has failed to recognize that the handles of a biopsy needle must securely engage into the physicians or surgeon's palm for optimum control of the instrument during a biopsy. It is also necessary that the style and Connally be engaged to each other during the biopsy process for providing total control to the physician or surgeon.

` 111~51~361 The present invention overcomes the disadvantages Or prior art references by providing a biopsy needle having a winged handle, detent locking between the style and Connally, and an adjustable threaded depth stop.
The general purpose of the present invention is to provide a biopsy Ned having a Connally and a style, both of which engage and interlock with respect to each other, and which can be conveniently grasped by the physician or surgeon in the palm of the hand to provide secure control during the biopsy process with an adjustable depth stop in a threaded portion of the Connally.
The invention provides a needle comprising: a. Connally member, said Connally member including a tubular Connally, a Connally clip fixedly secured on an upper portion of said tubular Connally and having two opposing ears extending substantially angularly outward therefrom, a lower end of said tubular Connally including a hollow-ground beveled knife-sharp edge angle, a molded housing formed thereabout of said tubular Connally wherein said opposing ears are permanently embedded in said molded housing to prevent said Connally member from rotating with respect to said milkweed housing, two hand wings extending from an upper portion of said molted housing, said molded housing including a threaded lower portion a button extending outwardly from an upwardly extending vertical member including a rim, the vertical member being of reduced diameter with respect to said molded housing and extending therefrom, and an angled chamber of reduced diameter extending through said vertical member to a top of said tubular Connally;
b. style member including a style having an upper angled end for securing and another end including a hollow-ground beveled knife-
- 2 -so sharp angle, a style cap molded about said angled end of said style, and including a spring detent locking groove for engaging under and about said button of said Connally in a detent locking mode, an interior bore of a height to engage about and with said vertical member of said Connally and engaging on said rim of said Connally member; and c. threaded depth stop means including a knurled circumference and plurality of digitory sockets formed about an upper edge of said knurled circumference, and a threaded inner portion for adjustment over said lower threaded portion of said Connally member whereby said style of said style member is pushed through said tubular Connally and protruding beyond the end of the tubular Connally where the end of said tubular Connally and the style are in predetermined oriented relationship when said detent locking groove spring on twisting engages and locks with said button of said Connally and said de-tent locking groove of said style cap providing said respective orientation of said knife-sharp edges, said depth stop is adjustable on said threaded lower portion of said Connally providing for proper penetration of suckle Connally and said style during biopsy whereupon -the style is removed and a syringe is inserted therein for the drawing of bone marrow up through said tubular Connally to said syringe.

I

A significant aspect and feature of the present invention is a biopsy needle having wing-shaped handles facilitating gripping and engagement by the physician/surgeon user.
Another significant aspect and feature of the present invention is an interlocking style and Connally providing for not only interlocking of the structural members in a positive detent fashion but also predetermined orientation between the knife-sharp edges of the Connally and the style. The interlocking structure also positions the style at a proper distance from the Connally, providing for consistent and secure biopsy surgery.
A further significant aspect and feature of the present invention is a biopsy needle which can be constructed either as a disposable instrument ~85~6~

or as a reusable instrument depending upon the type of molded material chosen for the Connally and style housings.
An additional significant aspect and feature of the present invention is a biopsy needle which can be constructed in different sizes for different sized individuals or for different applications.
Having described one embodiment of the present invention, it is the principal object hereof to provide a sternum or iliac needle including a Connally and style which interlock with each other and a threaded adjustable depth stop. The disclosure also applies to needle structure per so, and is not to be construed as being limited only to biopsy needles, as other applications are inherent within the scope of this disclosure.
Other objects and many of tune attendant advantages of this invention will be readily appreciated as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings, in which like reference numerals designate like parts throughout the figures thereof and wherein:
Figure 1 illustrates an engaged front view of a sternum or iliac needle, the present invention, including a style, adjustable depth stop, and n Connally;
on Figure illustrates a errant view of the style;
inure 3 illustrates a sectional view of the style;
Figure illustrates a sectional view of the Connally;
Figure S illustrates a sectional view of the Connally, depth stop an style all engaged with respect to each other;
Figure 6 illustrates a sectional view taken along line 6-6 owe Figure S; and, ~3586~

Figure 7 illustrates a sectional view taken on line 7-7 of Figure 5.
Figure 1 illustrates a front view of a sternum or iliac needle 10 having engage able components of a Connally member 12, a style member 14, and a depth stop 16. The Connally member 12 includes a longitudinal Connally 17 having a knife-sharp edge 18 which has been ground, buffed and polished outwardly at an angular tubular relationship and a molded housing 20 of AS
material or the like having the shape as illustrated in the figure. The housing 20 includes molded thereto left-hand wing 22 and right-hand wing 24, a vertical member 26 extending upwardly, an elongated button 28 extending outwardly in Figure 4, an angled chamber 30 running vertically downward from the top of member 26 and a threaded lower portion 32. The style member 14 includes a metal style 34 having a sharp edge 36 which has been ground, buffed and polished, a bent end 38 of Figure 3 for securing into a rounded molded cap 40, a detent locking groove 42 having an inherent spring member 44 including positive locking member 46. A downward extending boss 48 of Figure 3 extends downwardly internal to the cap 40 for engagement with a rim aye of the Connally housing 20. A kmlrled circumference 50 is provided about the cap for engagement by physician/surgeon user. The edges 18 and 36 I are hollow round flush with each other, with a hollow beveled angle in the rang of 15 - 40, preferably 25.
The depth stop 16 includes an upper knurled outer circumference 68, a threaded inner portion 70 as illustrated in Figure 5, an outer flared lower portion 72 between the upper knurled portion 68 and a rounded edge 74, and a plurality of digitory sockets Audi spaced about the edge 74 as also ~L858G~

illustrated in Figure 7.
Figure 2 illustrates a front view of the style 14 where all numerals correspond to those elements previously described. Attention is drawn to the lock groove 42 and the knife edge 36.
Figure 3 illustrates a sectional view of the style number 14 where all numerals correspond to those elements previously described. The end of the style has an angle of 25~ to the vertical while the angle may be in the range of 20 - 30, The tip is ground, buffed, and polished to maintain a knife-sharp edge. The upper end 38 of the style I is angled for securing into the rounded cap 40 during molding.
Figure I, which illustrates a sectional view of the Connally member 12, shows the particular detail of a Connally clip 50 securing the Connally 17 into the housing 20 about the angled chamber 30. The angled chamber 30 decreases from a large diameter 52 to a small diameter 54 in a lure taper, then to a chamfer 56, of a diameter which is slightly greater than the internal diameter of the Connally 16 so that a syringe can be inserted into the angled chamber 30 to draw bone marrow up into the Connally. A probe can be utilized to freely push the bone marrow out through the beveled end of the Connally and onto a slide, without damaging or distorting the bone marrow. The detent button 28 and the rim aye provide for engagement of the style member 14 in proper predetermined orientation. The Connally clip 50 is silver soldered -to the Connally 17 at an upper mid portion and is molded into the housing 20. The clip as also illustrated in Figure 6 includes a partial circular portion 58 and two wings 60 and 62 extending outwardly therefrom. A lower portion 6 of the housing 20 includes a plurality of threads 66.

L185 !36~

Figure 5 illustrates a sectional enlarged view of elements engaged with respect to each other for use as a biopsy needle in a medical biopsy procedure, ~11 numerals correspond to those elements previously described.
Particular distinction is drawn to the movability of the depth stop 16 with respect to the housing 20 in relation of the threads 70 of the depth stop 16 to the threads 66 of the Connally member 12. The Connally clip is silver soldered to Connally 17 of the Connally member thereby securing it in place. The Connally 17 with the Connally clip 50 and the wing is molded into the housing 20, thereby securing the Connally 17 with respect to the housing 20. The threads 66 are likewise molded into the lower portion of the Connally housing.
Figure 6, which illustrates a sectional view taken along line 6-6 of Figure 5, shows the Connally clip with respect to the Connally 17 and the Connally housing 20. The particular angle between the ears 60 and 62 is preferably in the range of 60 - 120 and in this instance 90.
Figure 7 illustrates a sectional view taken on line 7-7 of Figure 5 and shows particularly the digitory sockets Audi spaced about the edge 74 of the depth stop 16. The knurled circumference 68 is also illustrated accor~lngly as well as that of the knurled skirt I which provide for grasp Wylie the digitory sockets provide for trouncer of digitory pressure.
I MODE OF OPPUGN
logger l best illustrates the biopsy needle 10 for biopsies, the present invention, where the style lo is engaged and interlocked with respect to the Connally member 12. The depth stop 16 is appropriately screwed and adjusted to a point as determined by the physician/surgeon depending upon the depth of penetration of the needle for the particular physical size of the individual and the particular placement of the needle in the body with 358~

respect to fatty tissue and the marrow in the bone.
The detent button 28 provides for interlocking and inter-engagement of the members 12 and 14 together through engagement of the groove 42, up and over the spring member 44, and into the positive locking detent 46. The spring member 44 provides a positive sensory digital feedback signal indicating that the members 12 and 14 are engaged when button 28 resides within the chamber area of the positive locking chamber 46. The button 28 and the positive locking chamber 46 always indicate that the hollow-ground beveled angle of 25 of each of the knife edges 18 and 36 of the members are always oriented with respect to each other, as illustrated in Figures 1 and 5.
The depth stop 16 seats the sternum needle onto the individual's skin at the proper predetermined distance and provides for proper penetration of the knife edges. The knife-sharp edges arranged at the hollow beveled mule and flush to each other provides for the proper cutting action through the skin, tissue and bone due to the wedge action of the tips. The particular angles of the wedges and orientation with respect to each other is on of the important factors in obtaining a suitable bone marrow sample Eros the sternum during the biopsy process, as well as determining the proper distance without exceeding or being short in obtaining the sample.
Two threaded engagement of the depth stop 16 about the threaded member 64 to two lower portion ox the Connally housing 20 provides for predetermining that particular distance and the digital sockets Audi provide for adjustment by the physician/surgeon during the biopsy as well as the knurled portion 68.
The contour of the handles 22 and 24 provides a wing configuration feedback positive feel to the physician/surgeon during the biopsy as well as the digitory pads aye - 76d as adjustment is required.
The knurled portions 68 and 50 of the depth stop 16 and the rounded style handle 14 provide the final digital grasping members of the needle 10 along with the knurled skirt 74 along with the sockets Audi. The fingers of the physician/surgeon can apply pressure through the sockets as well as the rounded head, and can grasp any of the knurled portions for a secure grasp during biopsy.
The depth stop 16 can be carefully adjusted during a sternum biopsy so that the needle does not protrude through the sternum, especially through the other side of the sternum and through the aorta. Depending upon the size of the individual, the depth stop 16 may be removed from the Connally member-stylet member to reach the iliac, and hence, would not be used.
'rho considerations are made by the physician/surgeon at the time of the biopsy, and are also dependent upon the individuals own size.
various modifications can be made to the present invention without departing from the apparent scope thereof, The wings or ears of the Cowan 1ncmber can take any desired shape as well as any angle between the wings or ears, The clip can also be positioned anywhere within the I motel body of the Connally housing 20 so as to be molded therein.

10 _

Claims (5)

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. Needle comprising:
a. cannula member, said cannula member including a tubular cannula, a cannula clip fixedly secured on an upper portion of said tubular cannula and having two opposing ears extending substantially angularly outward therefrom, a lower end of said tubular cannula including a hollow-ground beveled knife-sharp edge angle, a molded housing formed thereabout of said tubular cannula wherein said opposing ears are permanently embedded in said molded housing to prevent said cannula member from rotating with respect to said molded housing, two hand wings extending from an upper portion of said molded housing, said molded housing including a threaded lower portion, a button extending outwardly from an upwardly extending vertical member including a rim, the vertical member being of reduced diameter with respect to said molded housing and extending therefrom, and an angled chamber of reduced diameter extending through said vertical member to a top of said tubular cannula;
b. stylet member including a stylet having an upper angled end for securing and another end including a hollow-ground beveled knife-sharp angle, a stylet cap molded about said angled end of said stylet, and including a spring detent locking groove for engaging under and about said button of said cannula in a detent locking mode, an interior bore of a height to engage about and with said vertical member of said cannula and engaging on said rim of said cannula member; and c. threaded depth stop means including a knurled circum-ference and plurality of digitory sockets formed about an upper edge of said knurled circumference, and a threaded inner portion for adjustment over said lower threaded portion of said cannula member whereby said stylet of said stylet member is pushed through said tubular cannula and protruding beyond the end of the tubular cannula where the end of said tubular cannula and the stylet are in predetermined oriented relationship when said detent locking groove spring on twisting engages and locks with said button of said cannula and said detent locking groove of said stylet cap providing said respective orientation of said knife-sharp edges, said depth stop is adjustable on said threaded lower portion of said cannula providing for proper penetration of said cannula and said stylet during biopsy whereupon the stylet is removed and a syringe is inserted therein for the drawing of bone marrow up through said tubular cannula to said syringe.
2. Needle of claim 1 wherein said edge is 25° plus or minus 5° with respect to the vertical.
3. Needle of claim 1 wherein said cannula clip is soldered to said tubular cannula.
4. Needle of claim 1, 2 or 3 wherein said two ears are at an angle in the range of 60° - 120° with respect to each other.
5. Needle of claim 1, 2 or 3 wherein said molded housing and molded cap are made from ABS material.
CA000418302A 1981-12-24 1982-12-22 Bone marrow aspiration needle Expired CA1185861A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/334,427 1981-12-24
US06/334,427 US4469109A (en) 1981-12-24 1981-12-24 Bone marrow aspiration needle

Publications (1)

Publication Number Publication Date
CA1185861A true CA1185861A (en) 1985-04-23

Family

ID=23307170

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000418302A Expired CA1185861A (en) 1981-12-24 1982-12-22 Bone marrow aspiration needle

Country Status (4)

Country Link
US (1) US4469109A (en)
EP (1) EP0097706A4 (en)
CA (1) CA1185861A (en)
WO (1) WO1983002220A1 (en)

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EP0097706A4 (en) 1985-07-01
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EP0097706A1 (en) 1984-01-11

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