Hemodialysis device

• US 10,251,993 B2
• Filed: 08/19/2016
• Issued: 04/09/2019
• Est. Priority Date: 02/26/2016
• Status: Active Grant

• Current Assignee: Chen Feng
• Original Assignee: Chen Feng
• Inventors: Chen, Feng
• Primary Examiner(s): Kim, John
• Application Number:
  US15/242,427
• Publication Number:
  US 20170246370A1
• Time in Patent Office: 963 Days
• CPC Class Codes: A61M 1/1601 Control or regulation
• CPC Class Codes: A61M 1/1605 Physical characteristics of the dialysate fluid
• CPC Class Codes: A61M 1/1625 Dialyser of the outside perfusion type, i.e. blood flow outside hollow membrane fibres or tubes
• CPC Class Codes: A61M 1/1664 with temperature control
• CPC Class Codes: A61M 1/1678 intracorporal peritoneal dialysis A61M1/28
• CPC Class Codes: A61M 1/285 Catheters therefor
• CPC Class Codes: A61M 1/3661 for haemodialysis
• CPC Class Codes: A61M 2025/0031 characterized by lumina for withdrawing or delivering, i.e. used for extracorporeal circuit treatment
• CPC Class Codes: A61M 2025/0034 characterized by elements which are assembled, connected or fused, e.g. splittable tubes, outer sheaths creating lumina or separate cores
• CPC Class Codes: A61M 2025/0039 characterized by lumina being arranged coaxially
• CPC Class Codes: A61M 2025/0681 Systems with catheter and outer tubing, e.g. sheath, sleeve or guide tube
• CPC Class Codes: A61M 2039/1027 Quick-acting type connectors
• CPC Class Codes: A61M 2039/1033 Swivel nut connectors, e.g. threaded connectors, bayonet-connectors
• CPC Class Codes: A61M 2039/1088 having a plurality of male connectors, e.g. Luer connectors
• CPC Class Codes: A61M 2205/3337 Controlling, regulating pressure or flow by means of a valve by-passing a pump
• CPC Class Codes: A61M 25/0028 characterized by features relating to at least one lumen located at the proximal part of the catheter, e.g. alterations in lumen shape or valves catheter hubs A61M25/0097
• CPC Class Codes: A61M 25/003 characterized by features relating to least one lumen located at the distal part of the catheter, e.g. filters, plugs or valves catheter tips A61M25/0067
• CPC Class Codes: A61M 25/0032 characterized by at least one unconventionally shaped lumen, e.g. polygons, ellipsoids, wedges or shapes comprising concave and convex parts

Abstract

A hemodialysis device is described herein. An exemplary hemodialysis device includes an import tube, a dialysis tube, and an export tube. The dialysis tube includes an inner dialysis tube, a dialysis membrane and an outer dialysis tube. The inner dialysis tube is within the dialysis membrane, which is within the outer dialysis tube. An inlet and an outlet of the inner tube are disposed at a first end of the outer dialysis tube. The inlet of the inner dialysis tube is coupled to the import tube and the outlet of the inner dialysis tube is coupled to the export tube. The dialysis tube is inserted into an artery of a patient, and thereby performs hemodialysis within the body. Since the hemodialysis in performed within the artery instead of drawing blood out of the body, the hemodialysis device will minimally affect blood pressure, which is more economic and safe.

Claims

1. A hemodialysis device comprising:

an import tube having an inlet and an outlet;

an export tube having an inlet and an outlet;

a dialysis tube comprising;

an outer dialysis tube having a first end, a second end, and an intermediate cavity;

an inner dialysis tube disposed within the intermediate cavity, the inner dialysis tube having an inlet, an outlet, and an interior cavity, the inlet and the outlet disposed at the first end of the outer dialysis tube; and

a dialysis membrane, the interior cavity being in partial fluid communication with the intermediate cavity across the dialysis membrane; and

a first lock coupling the outlet of the import tube to the inlet of the inner dialysis tube, and coupling the inlet of the export tube to the outlet of the inner dialysis tube.

2. The hemodialysis device recited in claim 1, further comprising:

a dialysate tank storing a dialysate solution, the dialysate tank coupled to the inlet of the import tube and the outlet of the export tube;

a pump that drives the dialysate solution through the import tube, the dialysis tube, and the export tube; and

a speed regulating valve.

3. The hemodialysis device recited in claim 2, further comprising a temperature control device that regulates a temperature of the dialysate solution.

4. The hemodialysis device recited in claim 1, wherein the import tube and the export tube each comprise a knob, the knobs facilitating decoupling the import tube and the export tube from the dialysis tube.

5. The hemodialysis device recited in claim 1, wherein the import tube and the export tube include a second lock and a third lock, respectively.

6. The hemodialysis device recited in claim 1, wherein the first lock is substantially Y-shaped and has a first end coupled to the first end of the outer dialysis tube, a second end coupled to the import tube, and a third end coupled to the export tube.

7. The hemodialysis device recited in claim 1, the inner dialysis tube comprising a first portion and a second portion, wherein the first portion spirals around the second portion.