Blood oxygenator and thermoregulator apparatus

Claim 2

Apparatus in accordance with claim 2 wherein said array has an integral single connecting tube array wall.

Claim 3

Apparatus in further accordance with claim 2 wherein said tubes in said array are uniformly spaced through the tube array cross section; an annular volume surrounding said array; a helical heat exchange tube disposed within aforesaid annular volume, providing a helical flow channel between its convolutions, the arterial blood adapted to flow through the helical flow channel.

Claim 4

Apparatus in further accordance with claim 4 including an annular blood reservoir surrounding said array, the lower end of the helical flow channel communicating with said reservoir.

Claim 5

Apparatus in further accordance with claim 3 wherein the helical flow channel surrounds said blood reservoir.

Claim 6

A disposable blood oxygenator apparatus suitable for exchanging oxygen for carbon dioxide in patient extra corporeal circulating blood, wherein the improvement combination comprises: a multiplicity of small diameter oxygen exchange tubes coadjacently disposed in a closely packed, parallel, equal length upstanding tube array, said tube array disposed in an oxygenator apparatus, the tube array first terminus secured adjacent the apparatus base end, a first tube case means permanently coaxially closely securing said tube array, said first case means having a case length longer than said tube array, said tube array coaxially disposed relative to said first case means the required spaced distance from said case means first terminus, a multiplicity of short oxygen gas injection tubes having internal gas passages therein, said injection tubes equal in number to the number of multiple oxygen gas exchange tubes, a first terminus of each one of said multiplicity of injection tubes disposed inside and adjacent a single exchange tube terminus in said exchange tube array first terminus, a second terminus of each one of said multiplicity of injection tubes terminating in an injection tube manifold plate, said manifold plate disposed the residual injection tube length from said tube array first terminus, providing therebetween an inlet blood reservoir volume, an annular defoamer bed concentrically disposed around said first tube case means, having a bed depth required to defoam oxygenated blood, said bed having foamed blood escape aperture means adjacently disposed in aforesaid case means, said bed having a bed base annular closure supportively externally sealed around said first case means at a bed first terminus, and the second bed means terminus coplanar with said first case means second terminus, said defoamer bed having a first open cell plastic foam packing disposed therein, the packing surface having a silicone defoaming composition thin film disposed thereon, thereby accelerating the separation of oxygenated blood and gas, a thin annular shell blood filter means coaxially surrounding said defoamer bed and a gas separation chamber disposed above said tube array, said annular shell blood filter having a dense open cell plastic foam composition filter medium cylindrically disposed therein and a thin fine weave filter cloth disposed over the filter medium exterior, the blood filter means length being not less than the defoamer bed depth, said filter cloth permanently exteriorly secured to said foam filter medium, said shell blood filter snugly secured to said bed base annular closure, and, a shell filter closure plate internally supportively disposed in and snugly secured to said shell blood filter at the Second terminus of aforesaid filter opposed to the filter terminus secured to the bed base annular closure.

Claim 7

An apparatus as set forth in claim 7 wherein the further improvement combination comprises: an annular tube second case means concentrically disposed around said first tube case means having an internal tube diameter substantially equal to the shell blood filter external diameter, said second case means having a first terminus supportively securing said bed base annular closure, and said annular shell blood filter, and a second terminus securing a first annular oxygenator case closure plate, said second case means having a length required to provide the necessary oxygenated blood reservoir in the annular volume between said first and second case means, said second case means having at least one blood reservoir aperture disposed in the tube wall thereof contiguous said second case means second terminus. a tubular heat exchange means snugly concentrically disposed around said second case means, a heat exchange thermoregulating fluid circulating through said heat exchange means, said exchange means having a blood circulating path externally disposed thereon providing a controlled temperature range of 50* to 108*F for the oxygenated blood flowing from said blood filter over said exchange means, said tubular means having a fluid inlet conduit and a fluid outlet conduit, a tubular exterior third case means snugly concentrically disposed around said heat exchange means, providing an exterior boundary surface for the blood circulating annulus enclosing said heat exchange means, said third case means having a length at least equal to the combined lengths of said second case means and said blood filter, a first terminus of said third case means permanently completely sealed by said first oxygenator case closure plate and the second terminus of said third case means sealed by said second oxygenator closure plate, said second oxygenator closure plate having gas escape aperture means disposed therein, said heat exchange means fluid inlet conduit and said fluid outlet conduit conductively disposed outside of said blood circulating annulus, to the blood oxygenator exterior, and at least one oxygenated, temperature regulated blood outlet conduit exteriorly disposed from said first oxygenator case closure plate.

Claim 8

A combination as set forth in claim 8 wherein said tubular heat exchange means further comprises a spirally wound tubular coil snugly concentrically disposed around said second case means.

Claim 9

In a disposable blood oxygenator apparatus suitable for exchanging oxygen for carbon dioxide in patient extra corporeal circulating blood, the combination comprising: a multiplicity of small diameter oxygen exchange tubes coadjacently disposed in a solidly packed, parallel, equal length tube array, said tube array ranging from 4 to 24 inches long and said tubes ranging from one-sixteenth to five-sixteenths inches in a single internal tube diameter, said tube array vertically disposed in an oxygenator apparatus, the tube array first terminus secured adjacent the apparatus base end, a first tube case means permanently coaxially closely securing said tube array, said first case means having a case length substantially longer than said tube array, said tube array coaxially disposed inside said first case means the required spaced distances from each of the first and second case means terminus, a multiplicity of short oxygen injection tubes having clear internal gas passages therein, said injection tubes equal in number to the number of multiple oxygen gas exchange tubes, a first terminus of each one of said multiplicity of injection tubes disposed inside and adjacent a single exchange tube terminus in said exchange tube array first terminus, a second terminus of each one of said multiplicity of injection tubes terminating in an injection tube manifold plate, said manifold plate planarly disposed noRmal to the first case means axis of symmetry and the manifold planar area completely sealing said first tube case means, said manifold plate disposed the residual injection tube length from said tube array first terminus, providing there between an inlet blood reservoir volume, an annular defoamer bed concentrically disposed around said first tube case means, having a bed depth required to defoam oxygenated blood, said bed having foamed blood escape aperture means adjacently disposed in aforesaid case means, said bed having a bed base annular closure supportively externally sealed around said first case means at a bed first terminus, and the second bed means terminus coplanar with said first case means second terminus, said defoamer bed having a first open cell plastic foam packing disposed therein, the packing surface having a silicone defoaming composition thin film disposed thereon, accelerating the separation of oxygenated blood and gas, a thin annular shell blood filter means coaxially surrounding said defoamer bed and a gas separation chamber disposed above said tube array, said annular shell blood filter having a dense open cell plastic foam composition filter medium cylindrically disposed therein and a thin fine weave filter cloth disposed over the filter medium exterior, the blood filter means length being not less than the defoamer bed depth, said filter cloth permanently exteriorly secured to said foam filter medium, said shell blood filter snugly secured to said bed base annular closure, and, a shell filter closure plate internally supportively disposed in and snugly secured to said shell blood filter at the second terminus of aforesaid filter opposed to the filter terminus secured to the bed base annular closure.

Claim 10

In a disposable blood oxygenator apparatus suitable for exchanging oxygen for carbon dioxide in patient circulating blood, and for regulating the blood temperature, the combination comprising: a multiplicity of small diameter oxygen exchange tubes coadjacently disposed in a solidly packed, parallel, equal length tube array, said tube array ranging from 4 to 24 inches long and said tubes ranging from one-sixteenth to five-sixteenths inches in a single internal tube diameter, said tube array vertically disposed in an oxygenator apparatus, the tube array first terminus secured adjacent the apparatus base end, a first cylindrical tube case means permanently coaxially closely securing said tube array, said first case means having a case length substantially longer than said tube array, said tube array coaxially disposed inside said first case means the required spaced distances from each of the first and second case means terminus, a multiplicity of short oxygen injection tubes having clear internal gas passages therein, said injection tubes equal in number to the number of multiple oxygen gas exchange tubes, a first terminus of each one of said multiplicity of injection tubes disposed inside and adjacent a single exchange tube terminus in said exchange tube array first terminus, a second terminus of each one of said multiplicity of injection tubes terminating in an injection tube manifold plate, said manifold plate planarly disposed normal to the first case means axis of symmetry and the manifold planar area completely sealing said first tube case means, said manifold plate disposed the residual injection tube length from said tube array first terminus, providing there between an inlet blood reservoir volume, a first closure means, permanently completely sealing said first tube case means at said case means first terminus, providing an oxygen inlet reservoir volume between said first closure means and said manifold plate, at least one foamed blood escape aperture means provided in said first case tube means adjacent the second terminus of said tube array, a gas separation chamber means disposed in said first case means above said at least one foamed blood escape aperture means, extending to saId first case means second terminus, at least one blood inlet conduit means disposed in said first case means providing direct conduction of blood into said blood reservoir volume, at least one oxygen inlet conduit means disposed in said first case means providing direct conduction of oxygen into said oxygen reservoir volume, an annular defoamer bed means concentrically disposed around said first tube case means, having a bed depth required to defoam oxygenated blood flowing from said foamed blood escape aperture means, said bed means having a bed base annular closure means supportively externally sealed around said first case means at a bed means first terminus supportively securing said bed means to said first case means, and the second bed means terminus coplanar with said first case means second terminus, said defoamer bed having a first open cell plastic foam packing means disposed therein, the packing surface having a silicone defoaming composition thin film means disposed thereon accelerating the separation of oxygenated blood and gas, a thin annular shell blood filter means coaxially surrounding said defoamer bed and aforesaid gas separation chamber, said annular shell blood filter having a dense open cell plastic foam composition filter medium means cylindrically disposed therein and a thin fine weave filter cloth disposed over the filter medium means exterior, the blood filter length being not less than the defoamer bed depth, said filter cloth permanently secured to said foam filter medium means, said shell blood filter snugly secured to said bed base annular closure, a shell filter closure plate means internally supportively disposed in and snugly secured to said shell blood filter at the filter second terminus opposed to the filter terminus secured to the bed base annular closure means, an annular tube second case means concentrically disposed around said first tube case means having an internal tube diameter substantially equal to the shell blood filter external diameter, said second case means having a first terminus supportively securing said bed base annular closure, and said annular shell blood filter, and a second terminus securing a first annular oxygenator case closure plate, said second case means having a length required to provide the necessary oxygenated blood reservoir in the annular volume between said first and second case means, said second case means having at least one blood reservoir aperture disposed in the tube wall thereof contiguous said second case means second terminus, a tubular heat exchange means snugly concentrically disposed around said second case means, a heat exchange thermoregulating fluid circulating through said heat exchange means, said exchange means having a blood circulating path externally disposed thereon providing a controlled temperature range of 50* to 108* F for the oxygenated blood flowing from said blood filter over said exchange means, said tubular means having a fluid inlet conduit and a fluid outlet conduit, a tubular exterior third case means snugly concentrically disposed around said heat exchange means, providing an exterior boundary surface for the blood circulating annulus enclosing said heat exchange means, said third case means having a length at least equal to the combined lengths of said second case means and said blood filter, a first terminus of said third case means permanently completely sealed by said first oxygenator case closure plate and the second terminus of said third case means sealed by said second oxygenator closure plate, said second oxygenator closure plate having gas escape aperture means disposed therein, said heat exchange means fluid inlet conduit and said fluid outlet conduit conductively disposed outside of said blood circulating annulus, to the blood oxygenator exterior, and at least one oxygenated, temperature regulated blood outlet conduit means exteriorly disposed from said first oxygenator case closure plate. Pg,35

Claim 11

A combination as set forth in claim 11 wherein said tubular heat exchange menas is a spirally wound tubular coil snugly concentrically disposed around said second case means.