# US 4,393,867 A · Anatomical compression device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,393,867 A - Document ID: US4393867A - Status: Granted - Kind: A - Application number: 06/307,313 - Filed: 1981-09-30 - Granted: 1983-07-19 - Earliest claimed: 1979-12-17 - Inventors: Howard C. Baron - Web page: https://patentgrep.com/patent/US4393867A ## CPC - A61F 5/34: Pressure pads filled with air or liquid - A61F 5/05816: {Inflatable splints} - 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) ## Abstract An anatomical compression device including a flexible, expandible envelope which contains a pair of chemical agents which form a gas when mixed. In use, the envelope encircles a body part, such as an injured limb, and the chemical agents are mixed by manual manipulation of the envelope, creating a gas which expands the envelope and exerts a compressive force on the limb. The compression device can serve as a splint for broken bones, as a pressure dressing for the control of bleeding, or as a treatment device for minimizing the effect of snake venom or a snake bite victim. ## Claims ### Claim 1 An anatomical compression device adapted to encircle and apply a compressive force to an anatomical body part, comprising: a completely sealed, flexible walled, expandible envelope adapted to at least partially encircle the body part; securing means for securing said envelope in an encircling relationship around the body part; and inflating means including a frangible member within said envelope for rapidly generating a supply of substantially only gas therein, said frangible member being accessible from the exterior of said envelope through the flexible walls thereof, whereby said frangible member may be manually ruptured to rapidly generate gas within said envelope, thereby causing said envelope to expand rapidly without further manipulation thereof and apply a compressive force to the body part. ### Claim 2 (depends on 1) A compression device according to claim 1 wherein said securing means comprises a sleeve adapted to encircle the body part with said envelope disposed between said body part and said sleeve. ### Claim 3 (depends on 1) A compression device according to claim 1 wherein said securing means comprises first and second mating fastening elements affixed to said envelope adjacent two opposite edges thereof. ### Claim 4 (depends on 3) A compression device according to claim 3 wherein said fastening elements comprise the mating elements of a separable fabric fastener. ### Claim 5 (depends on 3, 4) A compression device according to claim 3 or 4 wherein said envelope completely encircles the body part with said opposite edges thereof in overlapping relationship. ### Claim 6 (depends on 1, 3) A compression device according to claim 1 or 3 for applying a compressive force to a human arm and wrist, wherein said envelope has a hole therethrough for receipt of the thumb. ### Claim 7 (depends on 1) A compression device according to claim 1 further comprising a pressure release valve communicating with the interior of said envelope for releasing gas therefrom. ### Claim 8 (depends on 1) A compression device according to claim 1 wherein said frangible member is a capsule containing a plurality of chemical ingredients capable of generating gas when mixed, said frangible member having at least one thin frangible partition wall separating said chemical ingredients. ### Claim 9 (depends on 1) A compression device according to claim 1 wherein said frangible member is a capsule containing a first chemical ingredient and said envelope contains a second chemical ingredient, with said first and said second chemical ingredients capable of generating gas when mixed. ### Claim 10 (depends on 8) A compression device according to claim 8 wherein said expandible envelope contains a plurality of said capsules. ### Claim 11 (depends on 8, 9) A compression device according to claim 8 or 9 wherein at least one of said chemical ingredients contains an antifreeze agent for preventing freezing thereof. ### Claim 12 (depends on 2) A compression device according to claim 2 wherein said sleeve and said envelope are made of flexible, transparent plastic sheet material. ### Claim 13 (depends on 1) A compression device according to claim 1 wherein said envelope is made of flexible, transparent plastic sheet material. ### Claim 14 An anatomical compression device adapted to encircle and apply a compressive force to an anatomical body part, comprising: a completely sealed, flexible walled, expandible envelope having a central space adapted to receive the body part with the envelope encircling the body part; and inflating means including a frangible member within said envelope for rapidly generating a supply of substantially only gas therein, said frangible member being accessible from the exterior of said envelope through the flexible walls thereof, whereby said frangible member may be manually ruptured to rapidly generate gas within said envelope, thereby causing said envelope to expand rapidly without further manipulation thereof and apply a compressive force to the body part. ### Claim 15 (depends on 14) A compression device according to claim 14 wherein said frangible member is a capsule containing a plurality of chemical ingredients capable of generating gas when mixed, said frangible member having at least one thin frangible partition wall separating said chemical ingredients. ### Claim 16 (depends on 14) A compression device according to claim 14 wherein said frangible member is a capsule containing a first chemical ingredient and said envelope containing a second chemical ingredient, with said first and said second chemical ingredients capable of generating gas when mixed. ### Claim 17 (depends on 14) A compression device according to claim 14 wherein said expandible envelope contains a plurality of said capsules. ### Claim 18 (depends on 15, 16) A compression device according to claim 15 or 16 wherein at least one of said chemical ingredients contains an antifreeze agent for preventing freezing thereof. ### Claim 19 (depends on 14) A compression device according to claim 14 wherein said envelope is made of flexible, transparent plastic sheet material. ### Claim 20 (depends on 14) A compression device according to claim 14 for applying a compressive force to a human arm and wrist, wherein said envelope has a hole therethrough for receipt of the thumb. ### Claim 21 (depends on 14) A compression device according to claim 14 further comprising a pressure release valve communicating with the interior of said envelope for releasing gas therefrom.