# US 5,701,746 A · Method to refrigerate a jacket for keeping a transplant cold

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- Number: US 5,701,746 A
- Document ID: US5701746A
- Status: Granted
- Kind: A
- Application number: 08/624,518
- Filed: 1996-07-25
- Granted: 1997-12-30
- Earliest claimed: 1994-07-12
- Assignees: Electrolux S.A.R.L.
- Inventors: Francois Desgrandchamps; Michel Eugene; Nico Girrens; Fernand Muller; Sylvia Spaniol
- Web page: https://patentgrep.com/patent/US5701746A

## CPC

- A61F 7/0241: {Apparatus for the preparation of hot packs, hot compresses, cooling pads, e.g. heaters or refrigerators}
- A01N 1/10: Preservation of living parts
- A01N 1/144: for temperature control, e.g. refrigerators or freeze-drying apparatus
- A61F 7/103: {refillable}
- F25C 1/16: by partially evaporating water in a vacuum
- A61F 2007/0001: {Body part}
- A61F 2007/101: {for cooling organs in the body before or during surgery}
- A61F 2007/108: {Cold packs, i.e. devices to be cooled or frozen in refrigerator or freezing compartment}
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)
- A01N: PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF (preservation of food or foodstuff A23); BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES (preparations for medical, dental or toiletry purposes which kill or prevent the growth or proliferation of unwanted organisms A61K); PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- F25C: PRODUCING, WORKING OR HANDLING ICE

## Abstract

A jacket (10) for keeping a transplant (46) cold during the time the transplant in surgical way is connected to a receiver comprises a wall (12, 14) with a cavity (22) containing a frozen liquid, which melts under absorption of heat from the transplant. Before the transplant is placed in the jacket (10), the liquid, e.g. water, is frozen by being subjected to vacuum, vapour released from the liquid being absorbed by a substance, e.g. zeolite.

## Claims

### Claim 1

Method for refrigerating a jacket (10), said jacket being used to enclose and keep a transplant (46) cold while the transplant is surgically connected to a recipient, said jacket (10) having a wall with a cavity (22) containing a liquid and an opening (24) to the cavity, comprising the steps of placing the jacket in a compartment which is evacuated, evacuating the cavity through the opening and freezing the liquid.

### Claim 2 (depends on 1)

Method according to claim 1, wherein vapor, which is liberated from the liquid during the evacuation, is absorbed by a substance (32) located in the compartment.