Catheter head with catheter drain in discrete rotational positions

• US 20050020972A1
• Filed: 07/12/2004
• Published: 01/27/2005
• Est. Priority Date: 09/12/2002
• Status: Active Grant

• Current Assignee: Roche Diagnostics International AG (Roche Holding AG)
• Original Assignee: Roche Diagnostics International AG (Roche Holding AG)
• Inventors: Wyss, Martin, Horisberger, Ronny-Patrick
• Granted Patent: US 7,594,902 B2
• Time in Patent Office: Days
• US Class Current: 604/93.10
• CPC Class Codes: A61M 2005/1581 Right-angle needle-type devices
• CPC Class Codes: A61M 39/1011 Locking means for securing connection; Additional tamper safeties A61M39/16 takes precedence
• CPC Class Codes: A61M 39/1055 Rotating or swivel joints in general F16L27/00
• CPC Class Codes: A61M 5/001 Apparatus specially adapted for cleaning or sterilising syringes or needles
• CPC Class Codes: A61M 5/158 Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body

Abstract

A catheter head, for introduction of a fluid into an organic tissue, including a cannula housing with a cannula, a connector element with a fluid inlet, a guide and a fixing device. The guide device has several selectable discrete rotational positions for positioning the connector element relative to the cannula housing about a longitudinal axis of the cannula. The connector element, positioned in a rotational position, is detachably connected to the cannula housing in the selected position by means of the fixing device.

Claims

1. A catheter head for introducing a fluid into an organic tissue, said catheter head comprising:

a) a cannula casing comprising a cannula protruding on one side of said cannula casing and a passage channel running through the cannula casing and connected to said cannula;

b) a connecting element which includes a fluid supply and can be connected to the cannula casing in such a way that said fluid supply is connected to said passage channel;

c) a guiding means formed jointly by the cannula casing and said connecting element, for positioning and guiding the connecting element relative to the cannula casing; and

d) a fixing means for detachably fixing the connecting element to the cannula casing;

wherein

e) said guiding means for positioning the connecting element relative to the cannula casing exhibits a number of selectable, discrete rotational positions about the longitudinal axis of the cannula; and

f) said fixing means detachably fixes the connecting element, positioned in a rotational position, to the cannula casing in said selected rotational position.

2. The catheter head as set forth in claim 1, wherein once the connecting element has been fixed to the cannula casing, the fluid supply is arranged at an angle to said longitudinal axis of the cannula.

3. The catheter head as set forth in claim 1, wherein the cannula protrudes substantially perpendicularly from the cannula casing and the fluid supply, once fixed, is arranged substantially perpendicular to the cannula.

4. The catheter head as set forth in claim 1, wherein the rotational positions of the guiding means can be freely selected.

5. The catheter head as set forth in claim 1, wherein the guiding means forms a locking connection between the cannula casing and the connecting element for said selectable, discrete rotational positions.

6. The catheter head as set forth in claim 5, wherein said locking connection is formed by:

first locking means which are provided at least on a partial region of an annular area of the cannula casing; and

second locking means directed against said first locking means which are provided at least on a partial region of an annular area of the connecting element facing said partial region of said annular area of the cannula casing and which cooperate with the first locking means when the connecting element is positioned.

7. The catheter head as set forth in claim 6, wherein the first locking means is formed by first protrusions and the second locking means is formed by second protrusions, said second protrusions on the connecting element engaging between the first protrusions on the cannula casing when the connecting element is positioned.

8. The catheter head as set forth in claim 1, wherein the fixing means forms a releasable clamping connection between the cannula casing and the connecting element.

9. The catheter head as set forth in claim 8, wherein said clamping connection is formed by:

at least one elongated opening slit through the connecting element, by which at least one outer region is formed in the connecting element which can be flexibly moved towards a center of the connecting element;

at least one first clamping element which is arranged on the cannula casing; and

at least one second clamping element which is arranged on said outer region of the connecting element on a side facing the cannula casing and cooperates with said first clamping element.

10. The catheter head as set forth in claim 8, wherein the guiding means is provided by first and second clamping elements of the fixing means cooperating.

11. The catheter head as set forth in claim 8, wherein the locking connection of the guiding means is formed by first and second locking means which are provided on the first and second clamping elements and cooperate.

12. The catheter head as set forth in claim 8, wherein the clamping connection is formed by:

at least one elongated opening slit through the connecting element, by which at least one outer region is formed in the connecting element which can be moved towards a center of the connecting element;

at least one first clamping element which is arranged on the cannula casing;

at least one first barb extending in the circumferential direction at least on a partial region on the cannula casing and directed towards the connecting element; and

at least one second barb, complementary to said first barb, which extends in the circumferential direction at least on a partial region on the outer region of the connecting element and is directed towards the cannula casing, and which engages with the first barb in order to fix the cannula casing to the connecting element.

13. The catheter head as set forth in claim 1, wherein the guiding means is provided partially or completely on the fixing means.

14. The catheter head as set forth in claim 6, wherein the first and second locking means slide on each other when the connecting element is fixed to the cannula casing.

15. The catheter head as set forth in claim 9, wherein the first and second locking means slide on each other when said at least one outer region of the connecting element is pressed in towards the center of the connecting element.

16. A catheter head, comprising:

a cannula housing;

a connector element with a fluid inlet;

a guide;

and a fixing device.

17. The catheter head according to claim 16, wherein the guide device has selectable discrete rotational positions for positioning the connector element relative to the cannula housing about a longitudinal axis of the cannula.

18. The catheter head according to claim 17, wherein, when the connector element is positioned in a selected position of said selectable rotational positions, said connector element is detachably connected to the cannula housing in the selected position by means of the fixing device.

19. A catheter head comprising:

a casing comprising a cannula extending from said casing and a passage channel extending generally through the casing and coupled to said cannula;

a connecting element comprising a fluid pathway, said connecting element connectable to the casing whereby said fluid pathway is connectable to said passage channel;

means formed jointly by the casing and said connecting element for guiding the connecting element relative to the casing; and

means for detachably fixing the connecting element to the casing;

wherein

said means for guiding exhibits selectable, discrete rotational positions generally around the cannula, and said means for fixing is used to selectively fix the connecting element to the cannula casing in a selected one of said rotational positions.

20. The catheter head as set forth in claim 19, wherein the means for guiding is at least partially carried on the means for fixing.

21. The catheter head as set forth in claim 20, wherein the means for guiding forms a locking connection between the casing and the connecting element for said selectable, discrete rotational positions.

22. The catheter head as set forth in claim 21, wherein said locking connection is formed by:

first means for locking provided at least on a partial region of an annular area of the casing; and

second means for locking provided at least on a partial region of an annular area of the connecting element and cooperating with the first means for locking when the connecting element is positioned.

23. The catheter head as set forth in claim 22, wherein the first means for locking is formed by first protrusions and the second means for locking is formed by second protrusions, said second protrusions engaging the first protrusions when the connecting element is positioned.