Chamber for transplantation and device for transplantation

Patent metadata

Field	Value
Publication number	US-11570983-B2
Application number	US-201916728456-A
Country	US
Kind code	B2
Filing date	Dec 27, 2019
Priority date	Jun 29, 2017
Publication date	Feb 7, 2023
Grant date	Feb 7, 2023

Abstract

According to the present invention, there are provided a chamber for transplantation, as a planar chamber for transplantation which has a structure in which membranes for immunoisolation face each other, and which is capable of stably enclosing a biological constituent, including a membrane for immunoisolation at a boundary between an inside and an outside of the chamber for transplantation, in which the membranes for immunoisolation which face each other have joint portions that are joined to each other, an interior space includes a point at a distance of 10 mm or longer from any position of the joint portion, and the membrane for immunoisolation has flexibility that allows a distance of 1 mm to 13 mm as the following distance: in a case where a portion of 10 mm from a side surface of one short side of a 10 mm×30 mm rectangular test piece of the membrane for immunoisolation is vertically sandwiched between flat plates, and the flat plates are placed horizontally, a distance between a horizontal plane including a center plane in a thickness direction of the sandwiched portion of the membrane for immunoisolation, and a part, which is farthest from the horizontal plane, of a residual 20 mm-portion projecting from the flat plate; and a device for transplantation including the chamber for transplantation enclosing a biological constituent therein.

First claim

What is claimed is:

1. A chamber for transplantation, comprising:
a membrane for immunoisolation at a boundary between an inside and an outside of the chamber for transplantation,
wherein the membranes for immunoisolation face each other to form an interior space,
the membranes for immunoisolation which face each other have joint portions that are joined to each other,
the interior space includes a point at a distance of 10 mm or longer from any position of the joint portion, and
the membrane for immunoisolation has flexibility that allows a distance of 1 mm to 13 mm as the following distance, measured as follows:
a portion of 10 mm from a side surface of one short side of a 10 mm×30 mm rectangular test piece of the membrane for immunoisolation is vertically sandwiched between flat plates,
the flat plates are placed horizontally, and
a distance between a horizontal plane including a center plane in a thickness direction of the sandwiched portion of the membrane for immunoisolation, and a part, which is farthest from the horizontal plane, of a residual 20 mm-portion projecting from the flat plate is measured.

2. The chamber for transplantation according to claim 1 , wherein a maximum cross-sectional area of the interior space is 4 cm 2 to 200 cm 2 .

3. The chamber for transplantation according to claim 1 , wherein the joint portions are at end portions of the membranes for immunoisolation which face each other.

4. The chamber for transplantation according to claim 1 , wherein the joint portions are only at end portions of the membranes for immunoisolation which face each other.

5. The chamber for transplantation according to claim 1 , wherein the membrane for immunoisolation includes a porous membrane containing a polymer.

6. The chamber for transplantation according to claim 5 , wherein a thickness of the porous membrane is 25 μm to 250 μm.

7. The chamber for transplantation according to claim 5 , wherein a porosity of the porous membrane is 35% to 90%.

8. The chamber for transplantation according to claim 5 , wherein the porous membrane contains polysulfone or polyethersulfone.

9. The chamber for transplantation according to claim 1 , wherein the membrane for immunoisolation is formed of a porous membrane containing a polymer.

Assignees

• Fujifilm Corp

Inventors

• Kaminaga Kuniyuki
• Takegami Ryuta
• Hasegawa Kazuhiro
• Mochizuki Yusuke

Classifications

• A01N1/128 Primary

  Chemically defined matrices for immobilising, holding or storing living parts, e.g. alginate gels; Chemically altering living parts, e.g. by cross-linking · CPC title

• A01N1/146 Primary

  Non-refrigerated containers specially adapted for transporting or storing living parts whilst preserving · CPC title

• B01D63/089

  Modules where the membrane is in the form of a bag, membrane cushion or pad · CPC title

• A61L27/18

  obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds · CPC title

• A61F2/02

  Prostheses implantable into the body · CPC title