 Drug container entry mechanisms and method |
| The present invention solves the aforementioned drawbacks of and needs from drug infusion devices ... |
|
| Device and method for vascular anastomosis |
| In view of the limitations with existing methods, Applicant has succeeded in devising an improved ... |
|
| Vibrator appliance particularly useful for dialysis |
| What is claimed is: 1. A vibrator apparatus, comprising: a body weight support to support the body ... |
|
| Device and method to slow or stop the heart temporarily |
| Several inventions described below permit local transient therapy for arrhythmias. Drugs or other ... |
|
| Tissue stabilization |
| These and other objects are achieved by the tissue stabilizers of the present invention and the ... |
|
| Behavior modification |
| What is claimed is: 1. A method of stimulating enhanced performance of an activity by a human ... |
|
| Method for reducing pumping damage to blood |
| What is claimed is: 1. A method for optimizing each of a plurality of blood pump configuration ... |
|
| Hydrophilic, swellable coatings for biosensors |
| The present invention provides methods for reducing the electrode impedance of implantable ... |
|
| Double dowel spinal fusion implant |
| I claim: 1. An intervertebral implant comprising a unitary body having a shape, said shape having a ... |
|
| Liposomes containing a cisplatin compound |
| In one aspect, the invention includes a liposomal composition containing an entrapped cisplatin ... |
|
|
Catheter and method for infusing fluid into a patient
| Details |
Inventors: Lindsay, Erin J.; Pittman, John N.;
Assignee: Minnesota Mining and Manufacturing Company (St. Paul, MN)
Primary Examiner: Rosenbaum; C. Fred
Assistant Examiner: Kartchner; Gene B.
Attorney, Agent or Firm: Sell; Donald M., Smith; James A., Hoke, II; Robert W.
A medical catheter and a method for infusing blood into a patient. The medical catheter has first and second inlet openings, an outlet opening, a passageway connecting the openings, and a flexible valve member between the inlet openings. The valve member controls the size of the passageway between the inlet openings. The method includes inserting a conventional occlusion catheter into the medical catheter through the valve member and extending the tip of the occlusion catheter beyond the outlet opening of the medical catheter so that the blood vessel within the patient can be restrained. |
|
DETAILED DESCRIPTION Referring to the figures of the drawing, there is shown in FIG.
1 a schematic view a preferred embodiment of the medical catheter 10 of the present invention in a system 12 suitable for rapidly infusing blood 14 into a patient 16, as shown in FIG.
8.
The system 12 is generally comprised of a blood separator 18, a blood reservoir 20, a blood pump 22, a heat exchanger 24, a heater 26 and the medical catheter 10.
In operation, the blood 14 is pumped by the pump 22 from the reservoir 20, through the heat exchanger 24, and to the medical catheter 10, from which the blood 14 can be infused into the patient 16 by a method to be described.
The medical catheter 10 is shown in longitudinal cross-sectional view in FIG.
2 to comprise a tubular member having a first inlet opening 28, a second inlet opening 30 in the wall of the tubular member that is spaced a distance from the first inlet opening 28, an outlet opening 32, a through passageway 34 connecting the openings 28, 30 and 32, and a flexible valve member 36 between the first and second inlet openings 28 and 30.
The flexible valve member 36 is shown in FIGS.
3, 4 and 6 to preferably comprise an outer tube 38, an inner, flexible tube 40, two support bands 42 and 44, and two circumferential clamps 46 and 48.
The outer tube 38 is preferably comprised of a rigid plastic such as 85-100 durometer polyvinyl chloride and has an inlet opening 50 which preferably coincides with the inlet opening 28 described earlier, an outlet opening 52 and a through passageway 54 between openings 50 and 52.
The inner, flexible tube 40 is preferably comprised of an elastomer such as a medical grade latex and is disposed within the passageway 54 of the outer tube 38.
The inner tube 40 has an inlet opening 56 which preferably coincides with the inlet openings 28 and 50 described earlier, an outlet opening 58 and a through passageway 60 between the openings 56 and 58.
The two support bands 42 and 44 are spaced apart within the passageway 60 of the inner tube 40
|
|
Heart Surgery 
