Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
219 words
A catheter device, comprising a catheter having a free end for insertion in a venipuncture; a housing connected liquid-tight at one of its ends to an end of the catheter for liquid flow therebetween, said housing being adapted to define an elongate, liquid flow chamber internally thereof and being itself liquid-tight except for an opening through its end opposite the catheter; a hollow, stylet needle having a sharp end adapted to extend beyond the free end of the catheter to effect venipuncture, and a shank adapted to extend through the catheter internally thereof and into the said flow chamber of the housing during venipuncture, the length of the portion of the needle disposed within the catheter and extending beyond the free end thereof during venipuncture being less than the maximum length of said liquid flow chamber of the housing, so extended movement of the needle relative to the housing or vice versa following venipuncture will protectively position the sharp end of the needle within said housing and liquid supplied through the hollow interior of the needle will flow into said chamber and thence into and through said catheter; a tube for the supply of a venoclysis liquid extending through and substantially closing said opening and connected liquid-tight to the needle; and means by which said opening is closed liquid-tight.
Claim 2
Dependent Claim
219 words
A catheter device, comprising a catheter having a free end for insertion in a venipuncture; a housing connected liquid-tight at one of its ends to an end of the catheter for liquid flow therebetween, said housing being adapted to define an elongate, liquid flow chamber internally thereof and being itself liquid-tight except for an opening through its end opposite the catheter; a hollow, stylet needle having a sharp end adapted to extend beyond the free end of the catheter to effect venipuncture, and a shank adapted to extend through the catheter internally thereof and into the said flow chamber of the housing during venipuncture, the length of the portion of the needle disposed within the catheter and extending beyond the free end thereof during venipuncture being less than the maximum length of said liquid flow chamber of the housing, so extended movement of the needle relative to the housing or vice versa following venipuncture will protectively position the sharp end of the needle within said housing and liquid supplied through the hollow interior of the needle will flow into said chamber and thence into and through said catheter; a tube for the supply of a venoclysis liquid extending through and substantially closing said opening and connected liquid-tight to the needle; and means by which said opening is closed liquid-tight.
Claim 3
Dependent Claim
75 words
A catheter device in accordance with claim 1, wherein the tube is slidable within the housing opening, the end portion of the housing opposite the catheter is formed as a seat; and the means by which said opening is closed liquid-tight is a hub formation on the end of the needle that is within the housing, said hub formation being shaped to fit liquid-tight against said seat when the needle is retracted into the housing.
Claim 4
Dependent Claim
40 words
A catheter device in accordance with claim 2, wherein the portion of the tube which is connected to the needle and which extends through the opening is rigid or semi-rigid to enable manipulation of the needle from outside the housing.
Claim 5
Dependent Claim
19 words
A catheter device in accordance with claim 2, wherein the housing seat and the needle hub formation are conical.
Claim 6
Dependent Claim
35 words
A catheter device in accordance with claim 2, wherein the walls of the housing are flexible so the needle can be manipulated from outside the housing by manipulative pressure against said walls of the housing.
Claim 7
Dependent Claim
20 words
A catheter device in accordance with claim 2, wherein the needle hub has a longitudinal portion interfaced with the housing.
Claim 8
Dependent Claim
33 words
A catheter device in accordance with claim 2, wherein there is provided detent means internally of the housing at the forward margin of the seat to retain the needle in its retracted position.
Claim 9
Dependent Claim
58 words
A catheter device in accordance with claim 1, wherein the walls of the housing are collapsible and collapsed in the venipuncture position of the device so the catheter can be advanced relative to the needle following venipuncture; and the means by which the housing opening is closed liquid-tight is a liquid-tight connection between the housing and the tube.
Claim 10
Dependent Claim
17 words
A catheter device in accordance with claim 8, wherein the collapsible housing walls are formed as bellows.
Claim 11
Dependent Claim
26 words
A catheter device in accordance with claim 8, wherein the collapsible housing walls are of limp material hanging loosely in the venipuncture position of the device.