US2451183A - Blood extracting apparatus - Google Patents

Description

l.. TANTlMoNAco 2,451,183

BLOOD EXTRACTING APPARATUS Oct. 12, 1948.

Filed July 22, 1947 2 Sheets-Sheet 1 lliililiilliiIiillilillliillwliimlilliilliillilliillilliilillililli oct. 12, 1948. L, TANTlMONACQ 2,451,183

BLOCD EXTRACTING APPARATUS Filed July 22, 1947 2 sheets-sheet 2 Patented oct. 12', 1948 UNITED STATES PATENT FFICE BLOOD EXTRACTING APPARATUS Leonardo Tantmonaco, West Haven, Conn.

Application July 22, 1947, Serial No. 762,566

(Cl. 12S-133) Claims.

This invention relates to blood extracting apparatus and more particularly to apparatus for extracting blood for performing blood tests, blood transfusions, and the like.

A main object of the invention is to provide a novel and improved blood extracting apparatus which is simple in construction, easy to use and efficient in operation.

A further object of the invention is to provide a novel and improved :blood extracting apparatus which is constructed of relatively inexpensive parts, which is sturdy in construction and which is substantially painless to the subject on whom it is employed.

Further objects and advantages of the invention @will become apparent from the following description and claims, and from the accompanying drawings, wherein:

Figure 1 is a side elevational view of the main working portion of a blood extracting apparatus constructed in accordance with the present invention.

Figure 2 is a top plan View of the structure shown in Figure 1.

Figure 3 is an enlarged detail view, partly in cross-section, of the blood extracting cylinder and its supporting means as employed in the apparatus of Figure 1.

Figure 4 is a perspective view of tlhe splint means for securing the blood extracting aparatus of Figure 1 to the arm of a subject.

Figure 5 is an enlarged detailed view of the vein clamping lever employed in the blood extracting apparatus of Figure 1.

Figure 6 is a cross-sectional view taken on line 5 6 of Figure 3.

Referring to the drawings, II designates a disc-like bottom plate member provided with an outwardly extending arm portion I2 to which is secured a splint sleeve I3 in which the subjects arm is adapted to be clamped during the blood extracting process. Sleeve is preferably constructed of stiff material such as leather, or the like, and may be lined with cloth or other suitable material. The sleeve I3 is provided at one edge with straps I4, I4 adapted to be adjustably fastened to buckles I5, I5 carried on the opposite edge of the sleeve for securing the apparatus to the subjects arm during the blood extracting operation.

Carried by plate member II and projecting upwardly from its center is a threaded stud I6 and rotatably engaged therewith is an upper disc-like plate member I'I. Stud I6 has threaded thereon a knurled nut I8 for clamping plate member lI'I to plate member I I in a desired position of adjustment with respect thereto.

Secured to upper plate member I1 at diametrically opposed locations at its periphery are a pair of -parallel arcuate rack members I9, I9 integrally connected at their outer ends by a generally semi-circular yoke element 2B. Each rack member has a vertical web portion 2I and a top flange portion 22 on the top surface of which are formed the rack teeth 23. The flange portions 122, 22 are directed inwardly toward each other, as shown in Figure 3.

Pivotally ,secured to rack member i9 adjacent its connection to plate member II by a transverse pin member 2li is a lever 25. The forward portion of lever 25 is inwardly oifset toward the mid-plane between rack members I9 and I9 and is formed with a pair of spaced parallel fingers 25, 2S terminating substantially at the axis of the cylinder defined by the spaced rack elements I9 and I9.

The fingers 26, 26 actI as pressure arms to de- -press the fiesh on both sides of a vein, the Vein being positioned betweensaid fingers wlhen the apparatus is used. A spring 2l is connected between the handle portion 28 of lever 25 and the sub-adjacent plate member il, said spring normally biasing said handle portion 28 upwardly and causing the lingers 26, 26 to exert downward pressure when the apparatus is secured to a swbjects arm as will be subsequently described. The downward pressure of fingers 26, 2S may be relieved by exerting downward pressure on the handle portion 28 of the lever 25.

Engaging the rack teeth 123 of the rack members le and I9 are pinions 29, 29 and 33, 30' rotatably carried on respective transverse shafts 3I and i2. Secured to the shafts 5i and 32 is a hollow block member 33 provided with a pair of oppositely projecting stub shafts 3d, 3Q carrying rollers 35, 35 engaging rotatably beneath the anges 22 of the respective rack members I9 and I9', thereby preventing said block member 33 from ibeing lifted olf the rack members while allowing said block member to be rotated around the central axis of said rack members.

Block member 33 is formed with a central aperture 36 which is generally circular in shape, and projecting inwardly from the .fwalls of said aperture in a transverse plane aligned with stub shafts 35, Sil are the apertured lugs 3l, 3'?. Slidable in said lugs 37, 3i are the elongated pin members 33, 33 carried by a clamping sleeve 39, the pin members 38, 38 and the axis of sleeve 39 eing radial with respect to the axis of the rack members I9 and I9. Secured within the sleeve 39 is a glass syringe do having a depending hollow needle il and having a top plunger handle ft2. As shown in Figures 3 and 6, the sleeve 39 comprises two segments hinged together at d3, d3 and fastened in clamping relation by securing bolts @il securing together the edge portions of the segments opposite to the hinged portions thereof. The syringe f is conventionally calibrated, and the sleeve 39 is apertured at 45 so tion is a manually eontrolledair vent valve 4.

Mounted on the top surface of block member 33 is ian index pointer 49 arranged adjacent thel 'exposed syringe scale so that it provides `an indication of the relative position ofV the syringe with respect to said block member along', itsradial locus of movement dened by the apertured guide lugs 3l, 37. Pointer 49 is employed-*to gauge the depth of penetration of the hollow needle it when 'an ,is being; triade...v ,shown in .Figure.l,.the .tipportion of :the needle= il iis angled-rearwardly with respecttothe mitin portion thereof ata email angle, preferably an angle oenprodlnately,tendegrees .In .operation .of the, apparat.us,-.the sleeve i3, is secured to the subjects arm .withthe .approximate point" ofincision ,underlying the rack .membersrslzand iii" and;v theapparatus adi-listed so that' the vein at. the point, of, incision is. positionedy between the fingers 2,6, 2li ci the lever-.member 2 5. .Said'fin-gers. 26,2%. vpress the flesh adjacent the veirson eachside. dewnwardly, as previously .described, andexposeza substantialv incision area.r `The blockmember 331, carrying the syringe 4i] is then moved to its extreme left position, shown at v5l in Figure 1 andthe syringe is moved downwardly, pits motion gbeinggnided. by pin members. 38, inguidelugs. ila-31, untilthe needie pointV engageathe top`v of.A the vein .contour. ,The scale graduaticnfindicated by pointer deis 4the-.3a noted.v lThe syringe-.is then ,moved downwardly by4 smalihpredetermined amount necessary to pierde theveinwaH. and. theblock member the syringe is their movedto itsl extremeright pesition,L shown Lat Elin Figure 1, after-which the syringe; needle point is4 moved inwardly by,l another predetermined larger amount, the embedded angled tipfl. et theV needle being. int-his position substantiallyvparallel tothe axis ci; the vein. The. piston-handle 42 is then re.- traeted to operate the syringe in the usual mallz.;

5. thedesiiredamount-oi blood has been wi drawmthe syringe isretracted and the. lever handlel portion ispressed: downwardly to relieve the ypressi-ntevzi .the fingers 2E, 25 adjacent ,the

vein;V The, apparatus then. detached from the ,The rack members l ,-t'vprovide .a range` of* rotation op the..syringe sucientto rotatethe needle tip; lilfrom a Substantially perpendicular position with respect tov thevvein .to a. position substantially aligned therewith, as shown Figurel.

While a, specific embodiment of the blood-eztracting apparatus has been disclosed inthe foregoing. description, itv wilhbe .understood that vario-us modificationswwithn. the.. spirit. of .the

invention mayoccur` to thoseskilled in the art. Therefore, it is intended that nov limitations. .be

placed. on the inventionY other than as'dened bythe scope'. of lthe appended claims.

What. is elaimedis:

1.,A blood extracting apparatus, comprising an. arm splint, Va sup-port. plate adjustably secured to-saidarm splint, a pair'ofparallelareuate bars carried by .saidsupport plate,Y afblockmember, means movably securing said bloclrV member' tu said arcuate bars for movement along the arcuate surfaces thereof, a vein piercing syringe movably mounted on said block member and directed radially 'inwardly with respect't'o the axis of said arcuate 'barejthe syringe llfiavifigV its needle tip slightly angled' with respect to the 'manportion `of the needle, and means for guiding the syringe Vin a radial path with respect to said axis.

2;. Avbiood extracting apparatus, comprising Y armr lengaging means, a support plate adjustably "secured tosaid'm engaging means, an arcuate guidezmemberearried by said support plate; a carriage movabl'y secured to said guide member for riove'nlent along its curved periphery, a syringe movably carried on said Ycarriage and directed substantially radially inwardly with re-Y Y spec-tto said guide member, and means onisaid carriage constraining, .syringe toN radial movement with respecttosaid guide member.

3- A. .blood extracting. apparatus.' comprising meansengagiiig and adapted to be secured 'toa member of. the body, a supportpl'ate.adjustably Y secured to said means, an arcuate'.guide member carried by said support plate, a carriage. morably seeuredto; said "guide member for fmotemeht its.. .curved 'fperipherm va veinepieroin'g syringe .mouably's'ecured tu Said- 'carriage'aiid directed: substantially radially"inwartlyjwi'th re` spect to said guide member, meanson"saldicar-V riagelconstainirig said' syringe. to radialmov'ement. the plane ofv `said"gju de"member, and means; pivotall-ysecured with re" e'ct to'sa'i'd guide member for exerting dowrrw'ar pressure'latthe Y regionsadiacent .the tip'` ofthe syringe. f Y

34'.. A jblood extracting. apparatus comp "sing splint means; a 'support' plate adustably 'se -ed' to said splint means, an arcuate guide nie carried' by said support plate, acarriage' mounted on said guide member, meansrestraining said carriage for movement! aolig` thefcurvedfperipheryofusaidig Y x movablysee red to saidc'ariiagear'd directed substantially radially inwardly 'in' the plane'joi jacent the needle andfsplingf'means. biasing Y 1 syringe. te.. 'meier move .e

secured for moi/tement thepae f saidguide member..and adapted to exertdownward pressure at.' the regions the 'tipfof thesyr ge, and spring means 'biasiiigffsaidl'prssurelexertingmeans. downwardly. 1

5. In a blood extracting apparatus;'sleeve-like Y.

splirrt a support'plate, means "adjustably securing saidsu-pport" 'plate to 4 f of .the telyten degrees1 with respect to'thei main?Y portion of' needle, a lever member pivoted to the raclsbai @tation min hammered; apen efipafcee flngersicazfried'by 4V"sa-idflever' a aptedtdexert Y downward? pressureatthefreg 4ns`lateral-l'yl a'df said'w lingers downwardly.

Y er i member, a vein-.piercing syringe @ses 'pweteily Y A fsplintmearis. an arcuateraek bar' 'carriedlby'saidlsupport 'pl-ate,`

ile 'rack ser,

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