Catheter head for subcutaneous administration of an active substance
First Claim
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1. A catheter head comprising:
- a housing having a cavity extending therethrough, the cavity defining a seat;
a cannula extending from within the cavity, the cannula having a flange extending therefrom;
a retaining body secured to the housing, the retaining body having a pathway extending axially therethrough and defining a sealing surface; and
a gasket in sealing cooperation with the flange and the sealing surface.
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Abstract
The present invention provides a catheter head including a cannula housing, a needle holder connectable to the cannula housing and a guide sleeve associated with the needle holder for positioning and guiding a connecting needle, and for being narrowly slide-guided over a portion of said cannula housing.
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Citations
29 Claims
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1. A catheter head comprising:
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a housing having a cavity extending therethrough, the cavity defining a seat;
a cannula extending from within the cavity, the cannula having a flange extending therefrom;
a retaining body secured to the housing, the retaining body having a pathway extending axially therethrough and defining a sealing surface; and
a gasket in sealing cooperation with the flange and the sealing surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A catheter head comprising:
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a cannula housing having a cavity extending therethrough defining an internal surface and a passage in communication with the cavity;
a cannula extending from the cavity, the cannula having a flange extending radially therefrom;
a retaining body secured within the cavity and in cooperation with the internal surface to locate the flange within the cavity;
a needle holder comprising a guide sleeve axially surrounding a connecting needle; and
a guide extending from the cannula housing and cooperating with the guide sleeve to position the connecting needle into the passage. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A catheter head for subcutaneous administration of a substance, comprising:
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a cannula housing carrying a soft cannula to be placed in tissue and having a passage to said cannula for the substance;
a center part placed in and rigidly bonded to the cannula housing; and
means for sealing between a flange of the cannula and the center part. - View Dependent Claims (22, 23)
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24. A catheter head comprising:
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a housing with a cavity, wherein the cavity has an opening and an annular seat around the opening, a soft cannula having a portion in contact with the annular seat;
means for sealing; and
a center part received in the cavity, whereby the means for sealing is lodged between the portion of the cannula and the center part. - View Dependent Claims (25, 26, 27)
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28. A method of assembling a catheter head comprising a housing having a cavity with a seat, a cannula with a flange, an O-ring and a center part, said method comprising the steps of:
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positioning the cannula in the cavity so the flange is in contact with the seat;
placing the O-ring in the cavity overlying the flange;
placing the center part in the cavity to the extent that it contacts and compresses the O-ring; and
attaching center part to the housing. - View Dependent Claims (29)
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Specification