US1845930A - Phlebotomy gun - Google Patents

Phlebotomy gun Download PDF

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Publication number
US1845930A
US1845930A US45403030A US1845930A US 1845930 A US1845930 A US 1845930A US 45403030 A US45403030 A US 45403030A US 1845930 A US1845930 A US 1845930A
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US
Grant status
Grant
Patent type
Prior art keywords
needle
plunger
barrel
gun
phlebotomy
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
Morrow Albert Caine
Original Assignee
Morrow Albert Caine
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
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/150007Details
    • A61B5/150015Source of blood
    • A61B5/15003Source of blood for venous or arterial blood
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/150007Details
    • A61B5/150175Adjustment of penetration depth
    • A61B5/150183Depth adjustment mechanism using end caps mounted at the distal end of the sampling device, i.e. the end-caps are adjustably positioned relative to the piercing device housing for example by rotating or screwing
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/150007Details
    • A61B5/150374Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150381Design of piercing elements
    • A61B5/150389Hollow piercing elements, e.g. canulas, needles, for piercing the skin
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/153Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/150007Details
    • A61B5/150206Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
    • A61B5/150259Improved gripping, e.g. with high friction pattern or projections on the housing surface or an ergonometric shape
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/150007Details
    • A61B5/150732Needle holders, for instance for holding the needle by the hub, used for example with double-ended needle and pre-evacuated tube

Description

Patented Feb. 16, 1932 UNITED STATES ALBERT CAINE MORROW, OF DILLON, MONTANA! PHLEBOTOMY GUN Application filed May 20,

This invention relates to surgical instrulnents and more particularly to what are termed phlebotomy guns.

A primary object of the invention is to provide an instrument of this character constructed to quickly and forcibly insert a bleeding needle into a vein the puncture depth of which may be regulated to meet necessary requirements.

In carrying out these objects, the invention is susceptible of a wide range of modification without departing from the spirit or sacrificing any of the advantages of the claimed invention; there being shown in the drawings for illustrative purposes a preferred, and practical form, in which:

Figure 1 represents a side elevation of an instrument embodying the invention;

Fig. 2 is a similar view taken at right .a angles to Fig. 1;

Fig. 3 is a side elevation taken on the side opposite to that shown in Fig. 2;

Fig. 4 is a longitudinal section of the gun, and

2:, Fig. 5 is a horizontal section taken on the line 5-5 of Fig. 4.

In the embodiment illustrated the gum constituting this invention comprises a tubula r body or barrel member 1 provided with a an concave front closure 3 and a removable rear closure 4 the latter being preferably threaded into the barrel 1 as shown in Fig. 4. These closi'lres 3 and 4 are apertured as shown at 3a and 4a respectively for the passage there :55 through of the needle 10 and the apertures are of a sufficient size to permit the needle to slide trcely through them.

The barrel 1 is provided in its opposite side walls with longitudinally extending slots 6 and 7 arranged diametrically opposite each other and each of which is equipped with a laterally extending arm 8 at its upper or rear end by means of which the needle 10 is locked in retracted position as will be presently more fully described.

Mounted to slide in the barrel 1 is a plunger 11 through which the needle 10 passes and to which said needle is designed to be adj ustably secured by the set screw 9 which extends through slot 6 in the side wall of 1930. Serial a... 454,030.

the barrel to engage theneedle and hold it in adjusted position. ()n the oppositeside of the plunger 11 is a finger 12 designed to cooperate with a similar finger 13 carried by the other end of the barrel at the opposite side thereof to retract the plunger. These fingers are curved in opposite directions, one being designed for engagement by the forefinger of the user and the other by the thumb 1 for rectracting the plunger llcarrying the needle 10 against the tension of a coiled spring 14 which is mounted in the barrel 1 between the plunger 11 and the opposed closure 4 as shown clearly in Fig. 4.

It will thus be seen that normally the needle 10 is held in the recess formed by the concave outer face of closure 3, the screw 9 and the finger 12 being engaged with the lateral extensions or branches 8 of the slots 6 and 7.

To obtain a blood sample from any animal or a human the proper sized needle having been secured in the plunger according to the depth of the puncture to be made, the gun is placed with the needle point contacting the animals skin. The plunger is then released by disengaging screw 9 and finger 12 from the slot extensions 8. \Vhen so released the plunger carrying the needle will shoot forward under the action of spring 14: and cause the needle to penetrate the walls of the vein desired to be tapped. The blood from the vein flows into the needle 10 and when the latter is withdrawn from the animal the blood in the needle is available for testing or other purposes.

The needle may be disassembled for cleaning or repairs by unscrewing the closure 4 which is preferably knurled for this purpose.

It will be seen that the gun is simple and 0 easily operated and cleaned rendering it usable by persons of moderate means and limited knowledge.

Without further description it is thought that the features and. advantages of the in vention will be readily apparent to those skilled in the art, and it will, of course, be understood that changes in the form, proportion and minor details of construction may be resorted to, without departing from the spirit of the invention or its scope as claimed.

I claim:

A phlebotomy gun comprising a barrel provided at one end with a removable closure and at its other end with a concave closure. the latter forming a needle point housing, said closures being apertured for the passage of a needle, longitudinal slots in the walls of said barrel, a plunger. mounted in said barrel having a needle aperture, a set screw extending through one of said barrel slots and said plunger into the path of the needle to secure it in adjusted position relatively to the plunger, a finger extending laterally from said plunger through the other barrel slot, a laterally projecting finger carried by the rear end of said barrel on the side opposite the first mentioned finger to cooperate therewith for retracting the plunger, and a spring between said plunger and said rear closure which is compressed on the retraction of the plunger, and means to hold the plunger in retracted position against the tension of the spring.

ALBERT CAINE MORROW.

US1845930A 1930-05-20 1930-05-20 Phlebotomy gun Expired - Lifetime US1845930A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US1845930A US1845930A (en) 1930-05-20 1930-05-20 Phlebotomy gun

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1845930A US1845930A (en) 1930-05-20 1930-05-20 Phlebotomy gun

Publications (1)

Publication Number Publication Date
US1845930A true US1845930A (en) 1932-02-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
US1845930A Expired - Lifetime US1845930A (en) 1930-05-20 1930-05-20 Phlebotomy gun

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2639709A (en) * 1950-11-09 1953-05-26 Robert H Volgenau Blood extracting device
US3330279A (en) * 1963-10-18 1967-07-11 Sarnoff Automatic hypodermic syringe
US3503386A (en) * 1967-04-10 1970-03-31 Glenn I Pieratt Blood collecting device
US3659610A (en) * 1970-04-14 1972-05-02 Hugo S Cimber Aspirator needle injector
US3780734A (en) * 1971-12-10 1973-12-25 G Wulff Hypodermic syringe holder and injector device
US3809095A (en) * 1969-10-15 1974-05-07 H Cimber Aspirator needle injector
US6203530B1 (en) * 1997-01-28 2001-03-20 Pos-T-Vac, Inc. Auto-injection device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2639709A (en) * 1950-11-09 1953-05-26 Robert H Volgenau Blood extracting device
US3330279A (en) * 1963-10-18 1967-07-11 Sarnoff Automatic hypodermic syringe
US3503386A (en) * 1967-04-10 1970-03-31 Glenn I Pieratt Blood collecting device
US3809095A (en) * 1969-10-15 1974-05-07 H Cimber Aspirator needle injector
US3659610A (en) * 1970-04-14 1972-05-02 Hugo S Cimber Aspirator needle injector
US3780734A (en) * 1971-12-10 1973-12-25 G Wulff Hypodermic syringe holder and injector device
US6203530B1 (en) * 1997-01-28 2001-03-20 Pos-T-Vac, Inc. Auto-injection device

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