US 5,021,048 AGranted

Blood pump drive system

AssigneeMedtronic, Inc.

InventorDwight A. Buckholtz

Life of this patent

Estimating the term…

Abstract

Perfusion pump driver apparatus for coupling motive power from a controller console to the rotator of perfusion pump. The coupler has a console adaptor to connect the coupler apparatus to the pump control console. A pump receptacle is provided in the coupler to connect the pump to the driver. Power transfer mechanisms are provided in the coupler to adapt the control console characteristics to the pump characteristics.

Claims4

Dependent claims

An apparatus for pumping blood, comprising:

(a) a controller console, the controller console further comprising:
(i) a wall;
and
(ii) a motor, the motor being rigidly mounted to the wall, the motor having a first shaft which rotates in response to operation of the motor;
(b) a kinetic pump having an inlet and outlet, the kinetic pump including a rotator assembly with magnetic means for driving the pump;
and
(c) a manually installable coupler, the coupler further comprising:
(i) a console adapter, the console adapter being rigidly affixed to the wall, the console adapter comprising:
(A) a non-ferrous cover;
(B) a magnetic driver, the magnetic driver being rigidly affixed to the first shaft, the magnetic driver being proximate to the non-ferrous cover such that a magnetic field induced by the magnetic driver is perceptible through the nonferrous cover;
(C) a detent assembly, the detent assembly comprising:
(I) a prong;
(II) a spring, the spring being cooperatively connected to the prong so as to urge the prong to an extended position;
and
(III) a thumb slide, the thumb slide being cooperatively connected to the prong so as to permit retraction of the prong in opposition to the spring;
(IV) an annular recess, the annular recess being formed with a peripheral area of the console adapter so as to mate with an intermediate power transfer assembly;
and
(D) an intermediate power transfer assembly comprising:
(I) a drive receiver, the drive receiver being in magnetic communication with the magnetic driver;
(II) a receiver shaft, the receiver shaft having a first end and a second end, the first end being rigidly affixed to the drive receiver;
and
(III) a cooperating magnetic driver, the cooperating magnetic driver being rigidly affixed to the second end of the receiver shaft, thereby transferring mechanical energy from the drive receiver via the cooperating magnetic driver to the magnetic means of the pump;
and
(ii) a pump receptacle, the pump receptacle comprising:
(IV) a flange, the flange formed so as to mate with the annular recess of the console adapter;
and
(A) a first end, the first end being cooperatively connected to the intermediate power transfer assembly, and
(B) a second end, the second end being cooperatively connected to the pump.

25 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/389,634Filed 4 Aug 1989
Granted: 4 Jun 1991
Term ends: Not estimatedThe source records don’t support an estimate.

Classification19 codes

H02K 49/108
Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element: with an axial air gap
A61M 60/113
Incorporated within extracorporeal blood circuits or systems: in other functional devices, e.g. dialysers or heart-lung machines
A61M 60/31
Medical purposes thereof other than the enhancement of the cardiac output: for enhancement of in vivo organ perfusion, e.g. retroperfusion
A61M 60/419
For non-positive displacement blood pumps: the force acting on the blood contacting member being permanent magnetic, e.g. from a rotating magnetic…

Family

No related US applications are recorded in the indexed filing history.

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Abstract

An apparatus for pumping blood, comprising:

(a) a controller console, the controller console further comprising:
(i) a wall;
and
(ii) a motor, the motor being rigidly mounted to the wall, the motor having a first shaft which rotates in response to operation of the motor;
(b) a kinetic pump having an inlet and outlet, the kinetic pump including a rotator assembly with magnetic means for driving the pump;
and
(c) a manually installable coupler, the coupler further comprising:
(i) a console adapter, the console adapter being rigidly affixed to the wall, the console adapter comprising:
(A) a non-ferrous cover;
(B) a magnetic driver, the magnetic driver being rigidly affixed to the first shaft, the magnetic driver being proximate to the non-ferrous cover such that a magnetic field induced by the magnetic driver is perceptible through the nonferrous cover;
(C) a detent assembly, the detent assembly comprising:
(I) a prong;
(II) a spring, the spring being cooperatively connected to the prong so as to urge the prong to an extended position;
and
(III) a thumb slide, the thumb slide being cooperatively connected to the prong so as to permit retraction of the prong in opposition to the spring;
(IV) an annular recess, the annular recess being formed with a peripheral area of the console adapter so as to mate with an intermediate power transfer assembly;
and
(D) an intermediate power transfer assembly comprising:
(I) a drive receiver, the drive receiver being in magnetic communication with the magnetic driver;
(II) a receiver shaft, the receiver shaft having a first end and a second end, the first end being rigidly affixed to the drive receiver;
and
(III) a cooperating magnetic driver, the cooperating magnetic driver being rigidly affixed to the second end of the receiver shaft, thereby transferring mechanical energy from the drive receiver via the cooperating magnetic driver to the magnetic means of the pump;
and
(ii) a pump receptacle, the pump receptacle comprising:
(IV) a flange, the flange formed so as to mate with the annular recess of the console adapter;
and
(A) a first end, the first end being cooperatively connected to the intermediate power transfer assembly, and
(B) a second end, the second end being cooperatively connected to the pump.

25 more elements

Facts

Application

07/389,634Filed 4 Aug 1989

Granted

4 Jun 1991

Term ends

Not estimatedThe source records don’t support an estimate.

Classification19 codes

H02K 49/108
Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element: with an axial air gap
A61M 60/113
Incorporated within extracorporeal blood circuits or systems: in other functional devices, e.g. dialysers or heart-lung machines
A61M 60/31
Medical purposes thereof other than the enhancement of the cardiac output: for enhancement of in vivo organ perfusion, e.g. retroperfusion
A61M 60/419
For non-positive displacement blood pumps: the force acting on the blood contacting member being permanent magnetic, e.g. from a rotating magnetic…