TRACHEAL CANNULA

Abstract

A tracheal cannula for laryngectomized and/or tracheotomized persons includes a cannula tube part, a connector part and at least two supporting wings for fastening a strap. The supporting wings are arranged on the connector part, wherein the connector part includes a first conical part and a second conical part. The first conical part is disposed on the cannula tube part and widens away from the cannula tube part. The second conical part is disposed on the first conical part and widens toward the first conical part.

Claims

1. Tracheal cannula for laryngectomized and/or tracheotomized persons comprising: a cannula tube part, a connector partand at least two supporting wingsfor fastening a strap, wherein the supporting wingsare disposed on the connector part, wherein the connector part comprises a first conical part and a second conical part, wherein the first conical part is disposed on the cannula tube part and widens away from the cannula tube part, and wherein the second conical part is disposed on the first conical part and widens towards the first conical part.

2. Tracheal cannula according to claim 1, wherein the first conical part and the second conical part are adjacent to each other via a transition region.

3. Tracheal cannula (10) according to claim 2, wherein the supporting wings are disposed substantially in the transition region.

4. Tracheal cannula according to claim 1 the supporting wings are curved.

5. Tracheal cannula according to claim 4, wherein a radius of a curve of the supporting wings can be disposed substantially in a transverse plane.

6. Tracheal cannula according to claim 1 wherein the supporting wings extend distally (d) and laterally (1) from a connection point on the connector part (40).

7. Tracheal cannula according to claim 6, wherein an end of the supporting wings facing away from the connection point comprises a distance to a frontal plane on which a transition point arranged in the transition region is arranged.

8. Tracheal cannula according to claim 7, wherein the distance corresponds approximately to a width of at least one strap recess arranged in the supporting wings.

9. Tracheal cannula according to claim 1 wherein the cannula tube part comprises a hardness of about 60 Shore-A to about 80 Shore-A according to DIN ISO 7619-1 (2012-02).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0047] FIG. 1 depicts a tracheal cannula in a first view;

[0048] FIG. 2 depicts the tracheal cannula of FIG. 1 in a side view; and

[0049] FIG. 3 depicts the tracheal cannula of FIG. 1 in a top view.

DETAILED DESCRIPTION

[0050] FIG. 1 shows a tracheal cannula 10 comprising a cannula tube part 20 and a connector part 40. The connector part 40 is materially bonded to the cannula tube part 20. The cannula tube part 20 includes a first conical part 60 and a second conical part 70. Two supporting wings 42, 44 are further disposed on the connector part 40 and extend substantially laterally 1 from a connection point 95. The supporting wings 42, 44 each have a strap recess 46, 48 through which a strap not shown here can be guided. A width 52 of the strap recesses 46, 48 is designed in each case in such a way that this corresponds approximately to a thickness of the strap. The width 50 of the strap recess 46, 48 is also designed in such a way that it corresponds approximately to a width of the strap.

[0051] The second conical part 70 includes a continuous second recess 74 that communicates with a first recess 64 of the first conical part, which in turn communicates with the cannula tube part 20. Further, the second conical part 70 has an inner wall 76 that includes a connector profile 78. By means of the connector profile 78, a tracheostomy aid not shown here, for example a moisture-heat exchanger, can be attached to the tracheal cannula 10. A marking 96 is applied to the second conical part 70, which is clearly visible from the front due to the conical shape, and which preferably shows at least one size of the tracheal cannula 10.

[0052] FIG. 2 shows the tracheal cannula 10 in a side view, with hidden edges indicated by dashed lines. The connector part 40, respectively the first conical part 60 and the second conical part 70 as well as the cannula tube part 20 are made of composite materials. In particular, the tracheal cannula is made of a silicone having a hardness of about 70 Shore-A. A transition region 79 is formed between the first conical part 60 and the second conical part 70, which has a radius that is not further described here. A turning point of the transition region 79 marks a transition point 80, which at the same time preferably represents a maximum penetration depth of the tracheal cannula 10 into the tracheostoma of a user. The frontal plane 81, on which the transition point 89 is arranged, is preferably at least partially the plane, of the skin surface of the user when the tracheal cannula 10 is inserted into the tracheostoma. The supporting wings 42, 44 are disposed substantially distal d of the frontal plane so that skin irritation and pressure points from the supporting wings 42, 44 can be avoided.

[0053] The first conical part 60 has a first half opening angle 62 between a vertical axis 61.1 of the first conical part 60 and an undesignated generatrix of an outer envelope of the first conical part 60 of about 38°. The second conical part 70, whose base surface not shown here is associated with the base surface of the first conical part 60 not shown, has a second half opening angle 72 of about 16° between a vertical axis 61.2 of the second conical part 70 and an unspecified generatrix of an outer envelope of the second conical part 70. In the embodiment shown in FIG. 2, the vertical axis 61.1 of the first conical part 60 and the vertical axis 62.2 of the second conical part 70 and the longitudinal axes of the first recess 64 and the second recess 74, which are not further specified, are identical. This arrangement of the conical parts 60 and 70 is visually appealing and particularly comfortable when wearing the tracheal cannula.

[0054] The second conical part 70 comprises a second material thickness 73 that is greater than a first material thickness 63 of the first conical part 60. The second conical part 70 comprises the connector profile 78 referred to in FIG. 1 and is advantageously reinforced to hold the supporting wings 42, 44 without substantially deforming the connector part 40 during use. In contrast, the first material thickness 63 is designed to allow slight deformation to conform to the tissue surrounding the tracheostoma.

[0055] The proposed tracheostomy cannula 10 can be worn comfortably and avoids pressure points and skin irritation due to its geometry.