IV injection site and system

Claim 2

A self-sealing, cannula-receiving site adapted to sealingly receive a blunt cannula, the site comprising: a housing having an outside end and a passageway extending inwardly from the outside end, the passageway defining an axial direction and having a septum-receiving portion that is generally cylindrical; an elastomeric septum closely received in the passageway of the housing, the septum having inside and outside ends relative to the outside end of the housing, the septum including a slit, extending into the septum from the outside end of the septum generally in the axial direction for sealing the outside end of the housing; the septum being formed, before being inserted into the septum-receiving portion of the passageway of the housing during assembly of the site, in a configuration including a generally frustoconical portion adjacent the inside end of the septum and tapering downwardly in the direction toward the inside end, with the septum being compressed radially by the housing so as to have a generally cylindrical configuration after the septum has been inserted into the housing during assembly of the site.

Claim 3

A self-sealing, cannula-receiving site according to claim 1 wherein the septum-receiving portion of the passageway is defined by a wall having a generally constant diameter greater than the smallest pre-assembly diameter of the frustoconical portion of the septum but smaller than the largest pre-assembly diameter of the frustoconical portion of the septum.

Claim 4

A self-sealing, cannula-receiving site according to claim 2 wherein before assembly of the site the septum includes a generally constant diameter cylindrical portion extending from the frustoconical portion to the outside end of the septum.

Claim 5

A self-sealing, cannula-receiving site according to claim 1 wherein the housing further comprises opposed inner and outer annular ledges defining the septum-receiving portion of the passageway, the inner annular ledge engaging the inside end of the septum adjacent the periphery thereof, and the outer annular ledge engaging the outside end of the septum adjacent the periphery thereof.

Claim 6

A self-sealing, cannula-receiving site according to claim 4 wherein the outer ledge defines a generally circular opening through the outside end of the housing where the outside end of the septum is exposed.

Claim 7

A self-sealing, cannula-receiving site according to claim 5 wherein the outer ledge is formed by swaging the outer end of the housing over the septum.

Claim 8

A self-sealing, cannula-receiving site according to claim 1 wherein the site comprises an IV injection Y-site on an IV tubing set.

Claim 9

A self-sealing, cannula-receiving site according to claim 1 wherein the housing is formed of synthetic resin material.

Claim 10

A self-sealing, cannula-receiving site adapted to sealingly receive a blunt cannula, the site comprising: a housing having an outside end and a passageway extending inwardly from the outside end, the passageway defining an axial direction; an elastomeric septum closely received in the passageway of the housing, the septum having inside and outside ends relative to the outside end of the housing; the serum including a slit, extending into the septum from the outside end of the septum generally in the axial direction but not through the septum, for sealing the outside end of the housing; and a bore, extending into the septum from the inside end of the septum generally in the axial direction substantially to the slit, for sealingly engaging a blunt cannula inserted through the slit into the bore; and means in the housing for diverting elastomeric material of the septum displaced when a cannula is inserted into the slit into the bore to sealingly engage the cannula along the bore; the passageway of the housing having a septum-receiving portion that is generally cylindrical; the septum being formed, before being inserted into the housing during assembly of the site, in a configuration including a generally frustoconical portion adjacent the inside end of the septum and tapering downwardly in the direction toward the inside end, with the septum being compressed radially by the housing so as to have a generally cylindrical configuration after the septum has been inserted into the housing during assembly of the site.

Claim 11

A self-sealing, cannula-receiving site adapted to sealingly receive a blunt cannula, the site comprising: a housing having an outside end and a passageway extending inwardly from the outside end, the passageway defining an axial direction; an elastomeric septum closely received in the passageway of the housing, the septum having inside and outside ends relative to the outside end of the housing; the serum including a slit, extending into the septum from the outside end of the septum generally in the axial direction but not through the septum, for sealing the outside end of the housing; and a bore, extending into the septum from the inside end of the septum generally in the axial direction substantially to the slit, for sealingly engaging a blunt cannula inserted through the slit into the bore; and means in the housing for diverting elastomeric material of the septum displaced when a cannula is inserted into the slit into the bore to sealingly engage the cannula along the bore; the passageway of the housing having a septum-receiving portion that is generally cylindrical; the septum being formed, before being inserted into the housing during assembly of the site, in a configuration including a generally frustoconical portion adjacent the inside end of the septum and tapering downwardly in the direction toward the inside end, with the septum being compressed radially by the housing so as to have a generally cylindrical configuration after the septum has been inserted into the housing during assembly of the site.

Claim 12

A self-sealing, cannula-receiving site according to claim 22 wherein the housing is formed of synthetic resin material.

Claim 13

A self-sealing, cannula-receiving site according to claim 9 wherein the septum-receiving portion of the passageway is defined by a wall having a generally constant diameter greater than the smallest pre-assembly diameter of the frustoconical portion of the septum but smaller than the largest pre-assembly diameter of the frustoconical portion of the septum.

Claim 14

A self-sealing, cannula-receiving site according to claim 11 wherein before assembly of the site the septum includes a generally constant diameter cylindrical portion extending from the frustoconical portion to the outside end of the septum.

Claim 15

A self-sealing, cannula-receiving site according to claim 11 wherein the means for diverting elastomeric material of the septum includes the wall defining the septum-receiving portion of the passageway of the housing.

Claim 16

A self-sealing, cannula-receiving site according to claim 13 wherein the means for diverting the elastomeric material of the septum further includes opposed inner and outer ledges defining the septum-receiving portion of the passageway.

Claim 17

A self-sealing, cannula-receiving site according to claim 14 wherein the inner ledge engages the inside end of the septum adjacent the periphery thereof, and the outer ledge engages the outside end of the septum adjacent the periphery thereof, the inner and outer ledges each being generally annular.

Claim 18

A self-sealing, cannula-receiving site according to claim 15 wherein the outer ledge defines a generally circular opening through the outside end of the housing where the outside end of the septum is exposed.

Claim 19

A self-sealing, cannula-receiving site according to claim 9 wherein the bore of the septum extends between 25-50% through the septum, and the slit of the septum extends between 50-75% through the septum.

Claim 20

A self-sealing, cannula-receiving site according to claim 9 wherein the site comprises an IV injection Y-site on an IV tubing set.

Claim 21

An IV tubing set having a self-sealing, cannula-receiving site adapted to sealingly receive a blunt cannula, the site comprising: a housing having an outside end and a passageway extending inwardly from the outside end, the passageway defining an axial direction; an elastomeric septum closely received in the passageway of the housing, the septum having inside and outside ends relative to the outside end of the housing; the septum including a slit, extending into the septum from the outside end of the septum generally in the axial direction but not through the septum, for sealing the outside end of the housing; and a bore, extending into the septum from the inside end of the septum generally in the axial direction substantially to the slit, for sealingly engaging a blunt cannula inserted through the slit into the bore; and means in the housing for diverting elastomeric material of the septum displaced when a cannula is inserted into the slit to the bore to sealingly engage the cannula along the bore; the passageway of the housing having a septum-receiving portion that is generally cylindrical; the septum being formed, before being inserted into the housing during assembly of the site, in a configuration including a generally frustoconical portion adjacent the inside end of the septum and tapering downwardly in the direction toward the inside end, with the septum being compressed radially by the housing so as to have a generally cylindrical configuration after the septum has been inserted into the housing during assembly of the site.

Claim 22

An IV tubing set having a self-sealing, cannula-receiving site adapted to sealingly receive a blunt cannula, the site comprising: a housing having an outside end and a passageway extending inwardly from the outside end, the passageway defining an axial direction; an elastomeric septum closely received in the passageway of the housing, the septum having inside and outside ends relative to the outside end of the housing; the septum including a slit, extending into the septum from the outside end of the septum generally in the axial direction but not through the septum, for sealing the outside end of the housing; and a bore, extending into the septum from the inside end of the septum generally in the axial direction substantially to the slit, for sealingly engaging a blunt cannula inserted through the slit into the bore; and means in the housing for diverting elastomeric material of the septum displaced when a cannula is inserted into the slit to the bore to sealingly engage the cannula along the bore; the passageway of the housing having a septum-receiving portion that is generally cylindrical; the septum being formed, before being inserted into the housing during assembly of the site, in a configuration including a generally frustoconical portion adjacent the inside end of the septum and tapering downwardly in the direction toward the inside end, with the septum being compressed radially by the housing so as to have a generally cylindrical configuration after the septum has been inserted into the housing during assembly of the site.

Claim 23

An IV tubing set according to claim 19 wherein the housing is formed of synthetic resin material.

Claim 24

An IV tubing set according to claim 19 wherein the septum-receiving portion of the passageway is defined by a wall having a generally constant diameter greater than the smallest pre-assembly diameter of the frustoconical portion of the septum but smaller than the largest pre-assembly diameter of the frustoconical portion of the septum.

Claim 25

An IV tubing set according to claim 21 wherein before assembly of the site the septum includes a generally constant diameter cylindrical portion extending from the frustoconical portion to the outside end of the septum.

Claim 26

An IV tubing set according to claim 21 wherein the means for diverting elastomeric material of the septum includes the wall defining the septum-receiving portion of the passageway of the housing.

Claim 27

An IV tubing set according to claim 23 wherein the means for diverting the elastomeric material of the septum further includes opposed inner and outer ledges defining the septum-receiving portion of the passageway.

Claim 28

An IV tubing set according to claim 24 wherein the inner ledge engages the inside end of the septum adjacent the periphery thereof, and the outer ledge engages the outside end of the septum adjacent the periphery thereof, the inner and outer ledges each being generally annular.

Claim 29

An IV tubing set according to claim 25 wherein the outer ledge defines a generally circular opening through the outside end of the housing where the outside end of the septum is exposed.

Claim 30

An IV tubing set according to claim 19 wherein the bore of the septum extends between 25-50% through the septum, and the slit of the septum extends between 50-75% through the septum.

Claim 31

An IV tubing set according to claim 19 wherein the site comprises an IV injection Y-site mounted on the IV tubing set.

Claim 32

A connection system comprising a blunt cannula and a self-sealing, cannula-receiving site adapted to sealingly receive the blunt cannula, the site comprising: a housing having an outside end and a passageway extending inwardly from the outside end, the passageway defining an axial direction; an elastomeric septum closely received in the passageway of the housing, the septum having inside and outside ends relative to the outside end of the housing; the septum including a slit, extending into the septum from the outside end of the septum generally in the axial direction but not through the septum, for sealing the outside end of the housing; and a bore, extending into the septum from the inside end of the septum generally in the axial direction substantially to the slit, for sealingly engaging the blunt cannula inserted through the slit into the bore; and means in the housing for diverting elastomeric material of the septum displaced when the cannula is inserted into the slit into the bore to sealingly engage the cannula along the bore; the passageway of the housing having a septum-receiving portion that is generally cylindrical; the septum being formed, before being inserted into the housing during assembly of the site, in a configuration including a generally frustoconical portion adjacent the inside end of the septum and tapering downwardly in the direction toward the inside end, with the septum being compressed radially by the housing so as to have a generally cylindrical configuration after the septum has been inserted into the housing during assembly of the site.

Claim 33

A connection system comprising a blunt cannula and a self-sealing, cannula-receiving site adapted to sealingly receive the blunt cannula, the site comprising: a housing having an outside end and a passageway extending inwardly from the outside end, the passageway defining an axial direction; an elastomeric septum closely received in the passageway of the housing, the septum having inside and outside ends relative to the outside end of the housing; the septum including a slit, extending into the septum from the outside end of the septum generally in the axial direction but not through the septum, for sealing the outside end of the housing; and a bore, extending into the septum from the inside end of the septum generally in the axial direction substantially to the slit, for sealingly engaging the blunt cannula inserted through the slit into the bore; and means in the housing for diverting elastomeric material of the septum displaced when the cannula is inserted into the slit into the bore to sealingly engage the cannula along the bore; the passageway of the housing having a septum-receiving portion that is generally cylindrical; the septum being formed, before being inserted into the housing during assembly of the site, in a configuration including a generally frustoconical portion adjacent the inside end of the septum and tapering downwardly in the direction toward the inside end, with the septum being compressed radially by the housing so as to have a generally cylindrical configuration after the septum has been inserted into the housing during assembly of the site.

Claim 34

A connection system according to claim 32 wherein the housing is formed of synthetic resin material.

Claim 35

A connection system according to claim 29 wherein the septum-receiving portion of the passageway is defined by a wall having a generally constant diameter greater than the smallest pre-assembly diameter of the frustoconical portion of the septum but smaller than the largest pre-assembly diameter of the frustoconical portion of the septum.

Claim 36

A connection system according to claim 31 wherein before assembly of the site the septum includes a generally constant diameter cylindrical portion extending from the frustoconical portion to the outside end of the septum.

Claim 37

A connection system according to claim 31 wherein the means for diverting elastomeric material of the septum includes the wall defining the septum-receiving portion of the passageway of the housing.

Claim 38

A connection system according to claim 33 wherein the means for diverting the elastomeric material of the septum further includes opposed inner and outer ledges defining the septum-receiving portion of the passageway.

Claim 39

A connection system according to claim 34 wherein the inner ledge engages the inside end of the septum adjacent the periphery thereof, and the outer ledge engages the outside end of the septum adjacent the periphery thereof, the inner and outer ledges each being generally annular.

Claim 40

A connection system according to claim 35 wherein the outer ledge defines a generally circular opening through the outside end of the housing where the outside end of the septum is exposed.

Claim 41

A connection system according to claim 29 wherein the bore of the septum extends between 25-50% through the septum, and the slit of the septum extends between 50-75% through the septum.

Claim 42

A connection system according to claim 29 wherein the site comprises an IV injection Y-site on an IV tubing set.

Claim 43

A connection system according to claim 29 wherein the cannula is generally cylindrical having a diameter, the bore of the septum having a cross section that before insertion of the cannula into the slit has a diameter greater than the diameter of the cannula, the bore being decreased in cross section when the cannula is inserted through the slit by movement of the elastomeric material of the septum such that the septum sealingly engages the cannula along the bore of the septum.

Claim 44

A connection system comprising a blunt cannula and an IV tubing set having a self-sealing, cannula-receiving site adapted to sealingly receive the blunt cannula, the site comprising: a housing having an outside end and a passageway extending inwardly from the outside end, the passageway defining an axial direction; an elastomeric septum closely received in the passageway of the housing, the septum having inside and outside ends relative to the outside end of the housing; the septum including slit means, extending into the septum from the outside end of the septum generally in the axial direction but not through the septum, for sealing the outside end of the housing; and bore means, extending into the septum from the inside end of the septum generally in the axial direction substantially to the slit means, for sealingly engaging the blunt cannula inserted through the slit means into the bore means; and means in the housing for diverting elastomeric material of the septum displaced when the cannula is inserted into the means into the bore means to sealingly engage the cannula along the bore means; the passageway of the housing having a septum-receiving portion that is generally cylindrical; the septum being formed, before being inserted into the housing during assembly of the site, in a configuration including a generally frustoconical portion adjacent the inside end of the septum and tapering downwardly in the direction toward the inside end, with the septum being compressed radially by the housing so as to have a generally cylindrical configuration after the septum has been inserted into the housing during assembly of the site.

Claim 45

A connection system comprising a blunt cannula and an IV tubing set having a self-sealing, cannula-receiving site adapted to sealingly receive the blunt cannula, the site comprising: a housing having an outside end and a passageway extending inwardly from the outside end, the passageway defining an axial direction; an elastomeric septum closely received in the passageway of the housing, the septum having inside and outside ends relative to the outside end of the housing; the septum including slit means, extending into the septum from the outside end of the septum generally in the axial direction but not through the septum, for sealing the outside end of the housing; and bore means, extending into the septum from the inside end of the septum generally in the axial direction substantially to the slit means, for sealingly engaging the blunt cannula inserted through the slit means into the bore means; and means in the housing for diverting elastomeric material of the septum displaced when the cannula is inserted into the means into the bore means to sealingly engage the cannula along the bore means; the passageway of the housing having a septum-receiving portion that is generally cylindrical; the septum being formed, before being inserted into the housing during assembly of the site, in a configuration including a generally frustoconical portion adjacent the inside end of the septum and tapering downwardly in the direction toward the inside end, with the septum being compressed radially by the housing so as to have a generally cylindrical configuration after the septum has been inserted into the housing during assembly of the site.

Claim 46

A connection system according to claim 19 wherein the housing is formed of synthetic resin material.

Claim 47

A connection system according to claim 40 wherein the septum-receiving portion of the passageway is defined by a wall having a generally constant diameter greater than the smallest pre-assembly diameter of the frustoconical portion of the septum but smaller than the largest pre-assembly diameter of the frustoconical portion of the septum.

Claim 48

A connection system according to claim 42 wherein before assembly of the site the septum includes a generally constant diameter cylindrical portion extending from the frustoconical portion to the outside end of the septum.

Claim 49

A connection system according to claim 42 wherein the means for diverting elastomeric material of the septum includes the wall defining the septum-receiving portion of the passageway of the housing.

Claim 50

A connection system according to claim 44 wherein the means for diverting the elastomeric material of the septum further includes opposed inner and outer ledges defining the septum-receiving portion of the passageway.

Claim 51

A connection system according to claim 45 wherein the inner ledge engages the inside end of the septum adjacent the periphery thereof, and the outer ledge engages the outside end of the septum adjacent the periphery thereof, the inner and outer ledges each being generally annular.

Claim 52

A connection system according to claim 46 wherein the outer ledge defines a generally circular opening through the outside end of the housing where the outside end of the septum is exposed.

Claim 53

A connection system according to claim 40 wherein the site comprises an IV injection Y-site mounted on the IV tubing set.

Claim 54

A connection system according to claim 40 wherein the cannula is generally cylindrical having a diameter, the bore means of the septum comprising a bore that before insertion of the cannula into the slit means has a diameter greater than the diameter of the cannula, the bore being decreased in cross section when the cannula is inserted through the slit means by movement of the elastomeric material of the septum such that the septum sealingly engages the cannula along the bore of the septum.

Claim 55

A connection system according to claim 19 wherein the bore means of the septum extends between 25-50% through the septum, and the slit means of the septum extends between 50-75% through the septum.