Nasal cannula harness

Claim 2

A nasal cannula harness for delivering gas to the nasal passages of a patient comprising a pair of flexible tubes each having opposed end portions, one end portion of each of said tubes being adapted for connection to gas supply means, and a bridge connected to the other end portion of each of said tubes and holding the same for insertion into the nares of the patient, said bridge including a pair of sheet members, said other end portions of said tubes extending between said sheet member, said sheet members having inner sides with portions secured together in facing relation at locations on opposed sides of each of said other end portions of said tubes, said bridge having opposed bottom and upper sides and opposed longitudinally spaced ends, said other end portions of said tubes extending longitudinally into said opposed ends of said bridge, respectively, and upwardly and out of said upper side of said bridge for insertion into the nares of the patient.

Claim 3

The harness of claim 1 wherein said bridge includes a first channel in the inner wall of one of said sheet members extending inwardly and curving upwardly toward said upper side and receiving and locating one of said end portions, and a second channel in the inner wall of one of said sheet members extending inwardly and curving upwardly toward said upper side and receiving and locating the other of said end portions.

Claim 4

The harness of claim 2 wherein said channels extend respectively from said opposed ends of said bridge to said upper side of said bridge.

Claim 5

The harness of claim 1 wherein said sheet members comprise a folded single-piece of material having a fold along one of said sides of said bridge.

Claim 6

The harness of claim 4 wherein said secured together sheet member portions include flat areas of said sheet members adjacent each side of said tube end portions.

Claim 7

The harness of claim 3 wherein said sheet members comprise a folded single-piece of material having a fold along said bottom side of said bridge.

Claim 8

The harness of claim 1 wherein each of said other end portions of said tubes is curved and has a substantially straight portion extending outwardly from said upper side of said bridge for insertion into a nare.

Claim 9

The harness of claim 1 wherein said sheet members inlcude portions forming a pair of curving tunnels with said other end portions of said tubes respectively received in and surrounded by said tunnels.

Claim 10

The harness of claim 1 wherein at least one of said sheet members has a pair of channels in its inner side respectively receiving said other end portions of said tubes to predeterminately locate said other end portions in said bridge.

Claim 11

The harness of claim 1 wherein said sheet members comprise a folded single-piece of flexible material having a fold along said bottom side, each of said sheet members has a pair of facing channels extending inwardly respectively from said opposed ends and curving upwardly to said upper side, one of said channels of each of said sheet members receiving and locating one of said other end portions of one of said tubes, the other of said channels of each of said sheet members receiving and locating the said other end portion of the other of said tubes.

Claim 12

The harness of claim 1 wherein said harness includes an enlargement extending along said upper side between said other end portions for engagement with the nose of the patient when the harness is in use, and wherein said enlargement includes an integral portion of each of said sheet members and is smoothly rounded.

Claim 13

The harness of claim 4 wherein said one side of said bridge is said bottom side thereof.

Claim 14

The harness of claim 1 wherein each of said sheet members has at least one curved channel in its inner side for locating at least one tube end portion, and said sheet members are of plastic.

Claim 15

The harness of claim 4 wherein said sheet members comprise a folded single-piece of flexible plastic material having a fold along said bottom side.

Claim 16

A nasal cannula harness for delivering gas to the nasal passages of a patient comprising a pair of flexible narine tubes each having a proximal end portion adapted for connection with gas supply means and an opposed distal end portion for insertion into a nare of the patient, and a birdge member including a pair of flexible sheet members in facing relation each having a pair of channels in its inner surface, the channels of one of said sheet members being complementary and cooperating respectively with the channels in the inner surface of the other of said sheet members to form a pair of tunnels respectively receiving said distal end portions of said tubes, the inner surfaces of said sheet members being secured together in facing relation at locations on opposed sides on each of said tunnels, said bridge member having opposed ends and upper and lower sides, one of said distal end portions of said tubes and the tunnel receiving the same extending inwardly from one of said opposed ends of said bridge and curving upwardly toward said upper side, and the other of said distal end portions of said tubes and the tunnel receiving the same extending inwardly from the other of said opposed ends of said bridge and curving upwardly toward said upper side, said distal end portions extending outwardly from said upper side of said bridge in spaced relation to each other for insertion into the nares of the patient.

Claim 17

A nasal cannula harness for delivering gas to the nasal passages of a patient comprising a pair of flexible narine tubes each having a proximal end portion adapted for connection with gas supply means and an opposed distal end portion for insertion into a nare of the patient, and a birdge member including a pair of flexible sheet members in facing relation each having a pair of channels in its inner surface, the channels of one of said sheet members being complementary and cooperating respectively with the channels in the inner surface of the other of said sheet members to form a pair of tunnels respectively receiving said distal end portions of said tubes, the inner surfaces of said sheet members being secured together in facing relation at locations on opposed sides on each of said tunnels, said bridge member having opposed ends and upper and lower sides, one of said distal end portions of said tubes and the tunnel receiving the same extending inwardly from one of said opposed ends of said bridge and curving upwardly toward said upper side, and the other of said distal end portions of said tubes and the tunnel receiving the same extending inwardly from the other of said opposed ends of said bridge and curving upwardly toward said upper side, said distal end portions extending outwardly from said upper side of said bridge in spaced relation to each other for insertion into the nares of the patient.

Claim 18

The harness of claim 15 wherein said sheet members are of a folded single piece of plastic material having a fold along said lower side of said bridge.

Claim 19

The harness of claim 16 wherein each of said distal end portion of said tubes has an annular radial flange adjacent the end thereof insertable into a nare of the patient.