US2928391A

US2928391A - Holder-clamp

Info

Publication number: US2928391A
Application number: US366683A
Authority: US
Inventors: Albert E Krug
Original assignee: Becton Dickinson and Co
Current assignee: Becton Dickinson and Co
Priority date: 1953-07-08
Filing date: 1953-07-08
Publication date: 1960-03-15
Anticipated expiration: 1977-03-15

Description

March 15, 1960 A. E. KRUG HOLDER-CLAMP Filed July 8, 1953 6 w mm m O 2 G mm 0m 1 F a N. Mm

Yllllflll/ll Fri 1 Patented Mar. 15, 1960 HOLDER-CLAIVIP Albert E. Krug, Wyckoif, N.J., assignor to Becton Dickinson and Company, Rutherford, N.J., a corporation of New Jersey Application July 8, 1953, Serial No. 366,683

7 Claims. (Cl. 128214) This invention relates to a structurally and functionally improved holder-clamp unit primarily intended for use in connection with the transfer of liquids from one receptacle to another within the laboratory. Having in mind that the present teachings are dedicated to an apparatus which will be useful in a blood donor program, the assembly also has primary utility in connection with the transfer of blood from a donor to a suitable receptacle.

It is a primary object to provide a structure with which a cannula may be readily associated so that the needle may be caused to pierce a receptacle seal with minimum effort.

A further object is that of furnishing a holder-clamp which may be employed'by a nurse or other attendant to control the flow of liquid to or from the hollow needle without the necessity of employing accessory apparatus.

Still another object is that of devising an assembly of this type which, when combined with a needle, will rigidly support the latter for all desired manipulations and which thereafter may be discarded and replaced by a new unit with which another sterilized needle may again be quickly combined.

An additional object is thatof furnishing a readily manufactured apparatus including a needle of improved structure and in which the several parts will be simple in design and sufliciently rugged to withstand all normal usage.

With these and other objects in mind, reference is had 'to the attached sheet of drawings illustrating one pracreceptacle and showing a needle being applied thereto; I I

Fig. 2 is an enlarged sectional side view of the holder- -clamp assembly together with the needle associated therewith;

Fig. 3 shows the reverse side of the assembly from that "illustrated in Fig. 1;

volve the use of receptacles which may ordinarily take 7 :the form generally illustrated in Fig. l in which the numeral 10 indicates the body of a receptacle or bottle conveniently terminating in a neck portion 11 having an .exterior thread to receive an enclosing cap (not shown).

The neck of the receptacle is ordinarily sealed by a stopper, conveniently formed of rubber having a flanged head portion 12 and a plug 13 which enters and bears against the inner surfaces of neck 11. This stopper is preferably provided with recesses 14 in its opposite faces. These recesses have their base positions terminating at points spaced from each other so that a diaphragm or pierceable layer 15 intervenes them; The interior of the receptacle may be partially or substantially Wholly evacuated and the stopper is subjected to radial compression such that, the diaphragm portion 15 is in effect self-sealing.

In other words, it may be perforated by a hollow needle 'but when the latter is withdrawn the seal will be reestablished.

tube walls to be moved towards each other, or in other words pinched, for the purpose of constricting or interrupting the flow of fluid through the tube bore.

As shown in the latter figure, the outer pointed end of needle 16 may be enclosed within a protecting sheath 19. If the latter is used, it may be constricted around and beyond a flanged needle portion 20 so as to retain the sheath in place. At a point between this flange and the rear end 17 of the cannula, a collar 21 extends outwardly from the latter. This collar and its associated parts are conveniently formed separately of the needle but are secured against movement with respect to the same. A tubular part 22 is in turn disposed to the rear of collar 21 and terminates in a truncated cone 23, the surfaces of which extend inwardly towards the reduced end portion 17 of the assembly. I

The holder is preferably formed of plastic and includes a tubular body 24 provided with an enlarged head portion 25. As shown especially in Figs. 1 and 4, the side wall of body 24 is interrupted by a slot 26 communicating with the bore 27 of that body. The width of this slot should be such that tube 18 may be laterally shifted through the same to occupy the bore 27. At a point preferably opposite slot 26, body 24 may be formed with pletely constricted so that no fluid may flow through it.

Adjacent the lower or headed end of the holder, its

bore is enlarged, as at 30, to define a socket within whichcollar 21 may be received. That socket terminates in a constriction defined by a shoulder or flange 31 beyond which the surfaces of the bore are tapered inwardly, as

at 32, and terminate in a second shoulder 33. It is to be noted that the bore portion, defined by surfaces 32,

has an entrance such that the reduced end of. the truncated cone part 23 may readily be received therein. Also shoulder 33 defines a constricted radius which is less than the maximum radius of part 23. Shoulder 31 de fines a diameter less than that of collar 21.

Finally, it will be understood that in the present assembly the tube 18 may be of any desired and suitable length and will ordinarily mount adjacent the end opposite that to which cannula 16 is connected, to a second needle. That second needle may either be substantially identical with the structure of the needle assembly just described,- or it may be a tissue piercing needle of the veinous type. ,With a needle of the latter type it is, for example, feasible to penetrate into the vein of a donor and through the tube 18 conduct blood through to needle 16. With the latter extending through the seal 13, the donated blood may be caused to flow into receptacle10. Likewise, with this type I of needle the stopper or seal of a second receptacle may be perforated in order to transfer liquids such as blood from one vessel to another. However, ordinarily if the latter procedure is resorted to, then it is definitely preferred to employ a needle of the type designated by 16, together with a holder such as has been herein described.

In proceeding to use that holder, a nurse or other technician will-simply move tube 18 in a lateral direction towards bore 21 through slot 26. With the tube thus disposed, as in dotted lines in Fig. 2, that tube may be axially shifted with respect to the holder to cause the attached needle to move towards the head portion 25 of the latter. So moved; truncated part 23 will enter? socket; 30' and the bore defined by the tapered wall surface 32. Asit'kzt'm -ta'cts this surface and dueto the inherent resili'ency of the holder, the faces of these parts will cam against each other. This action -will continue until thebase of part 23 clear shoulder 33. Thereupon, the bore'of-rthe holder adjacent these parts will constrict so that, as shown in Fig. 2, shoulder 33 will underlie part 23 and function as a keeper. Accordingly, a pawl, detent or latch action will have occurred under which the parts will be locked against an outward and separating movement. Simultaneously collar 21 will enter socket 30 to bear against shoulder 31 which will'thus function as a stop to limit further inward movementof the parts.

' Accordingly, the needle will, in elfect, be locked-against V movement with respect to the'holder and the latter may be grasped to manipulate the needle as a unit with that attached to said needle at a point spaced from said cone fer of liquid, the flow through tube 18 may, of course, be

controlled by introducing that tube into slot portion 28 and moving the same inwardly into the well portion 29 as shown in Fig. 3. Under these circumstances, it is apparent that the tube bore will be completelycollapsed, thereby preventing all further fluid flow. The withdrawal of the needle from the stopper. or other seal may be achieved 'by simply grasping head and exerting a pull thereon.

Thus, among others, the, several objects of the invention as specifically aforenoted are achieved. It is apparent that numerous changes'in construction and rearrange Iclaim: Y V

1. For use in a set of the blood donor type, a tubular,

pointed outer end, a flexible tube connected to the inner ments of the parts might be resorted towithout departing ."from the spirit of the invention as defined in the claims end of said needle, such inner needle end and the adjacent part of said tube being disposed within said slot, means providing surfaces on the faces of the boreand needle to interengage and prevent axial movements of the same with respect to'each other, said body being formed of.

flexible material whereby said tube and needle mayfbe moved laterally through said slot into said bore to cause the surfaces of the latter .and needle to interengage, one

end of said body being formed with-a tapered notch to receive and constrict said tube.

' portion and between the'same and the needle point, spaced shoulders formed in the boresurface of said body and engaging the surfaces of said portion and collar respectively to prevent axial movements of said body and needle with respect to eachother, and said tube and needle, being movable laterally through said slot into said bore to cause the surface of the latter and needle parts to interengage.

4. For use in a set of the blood donor type, a tubular body, said body being'providedwith an axial slot extending outwardly from its bore, a hollow needle having a pointed outer end, a flexible tube connected to the inner end of said needle, one end of said body being formed with a tapered notch to receive and constrict said tube, a truncatedjcone portion attached to said needle and facing in thedirection of the inner end of the same,

- a collar also attached toisaid needle at a point spaced from said cone portion and between the same and'the needle point, spaced shoulders formed in the bore surface of said body and engaging the surfaces. of said portion and collar respectively to prevent axial movements of said body and needle with respect to each other, said body bore having an inward taper in a direction away from the needle point and between said shoulders whereby said tube and needle are movable in a lateral direction through said slot into said bore and are subsequently movable axially of said bore to cause said truncated cone portion to cam against the taper of said body to a position at which said portion lies adjacent one of the shoulders of said bore surface with the collar lying adjacent the second of the same.

5. For use in a set of the" blood donor type, a tubular body formed with an axial slot extending through from its here to its outer face,'-a flexible tube, a hollo w needle having an outer pointed end and a rear end connected to said flexibletube, a pair of spaced flanges formed in :the bore of said body, a pair of collars affixed to said needle adjacent its rear end, said tubebeing laterally movable throughsaid slot into the bore of said body and together with said needle being axially movable with. re-. spect to said body to dispose the rear end of said needle and the attached tube within the bore of said body and adjacent part of said flexible tube and retain and constrict it. w I 6. For use in a set of the blood donor type, a holder comprising a tubular body having an inwardly tapered I bore portion, spaced shoulders definingthe ends of that portion and forminga part of said body, a hypodermic needle having a rear end, a tube connected to that end,

body, said body being provided with an axial slot extending outwardly from its bore, a hollow needle having a I pointed outer end, a flexible tube connected to the inner.

end of said needle, one end of said body being formed with a tapered notch to receive and constrict said tube; a retainingportion attached to said needle, alcollar also, attached to saidneedle at'a point spaced from said-portion, and between the same and the needle point, spaced shoulders formed in the bore surface of said body and engaging the surfaces of said portion and collar respectively to prevent axial movements of .said body and needle with respect to each other, and said tube and needle being movable laterally through said slot into said bore to cause the surface of the latter and'needle parts to interengage.

3. For use in a set of the blood donor type, a tubular body, said body being provided with an axial .slot exoutwardly from its bore, a hollow needle having 'a truncated cone and a collar carried by said needle forwardlyiofsaid, tube and bearingrespectively one against each of said shoulders, and said tapered bore portion "being expansible whereby the tuncated cone carried by said needle is axially movable through said bore portion 7 to position said needle therein with the collar and cone carried thereby bearing against such shoulders.

.7, A unit of the type described including incombination a tubular body having upper and lower endsea hypodermic needle having a pointed outer end, a tube connected to the inner end; of said needle and extending through the bore of'said body, ldetent means extending 5 inwardly of the bore of said body as Well as being carvried by the needle, said detent means cooperating as .said needle and tube are'shifted axially, of saidbody to automatically retain said needle'with its point extending beyond the lower end of said body, and: locking means References Cited in ihe file of this patent UNITED STATES PATENTS Mueller July 3, 1934 Harrison Oct. 2, 1934 6 Perelson Aug. 10, 1943 Perry L Jan. 2, 1945 Lockhart Jan. 29, 1952 Smith Aug. 5, 1952 Huber Sept. 21, 1954 Adams et a1. Sept. 21, 1954 Ryan May 10, 1955